Furthermore, the purchase of Motorola products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive license to use that arises by operation of law in the sale of a product.
Document History Document History The following major changes have been implemented in this manual since the previous edition: Edition Description Date 6816985H01-A Initial Release April, 2006 6816985H01-B Added UHF1, UHF2, 700/800 MHz and 900MHz Aug., 2007 information. 6816985H01-B August 16, 2007...
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Table of Contents Notes August 16, 2007 6816985H01-B...
Table of Contents Table of Contents Foreword ..............................ii Safety Information..........................ii Manual Revisions ..........................ii Computer Software Copyrights......................ii Documentation Copyrights ........................ii Disclaimer ............................ii Trademarks............................ii Document History ..................iii Chapter 1 Introduction ................. 1-1 General............................1-1 Notations Used in This Manual ....................1-1 Chapter 2.1 VHF Overall Characteristics..........2.1-1 2.1.1 Introduction..........................
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Table of Contents Chapter 2.4 700/800 MHz Overall Characteristics......2.4-1 2.4.1 Introduction..........................2.4-1 2.4.2 Analog Mode of Operation-Receiving..................2.4-1 2.4.3 Analog Mode of Operation-Transmitting..................2.4-2 2.4.4 ASTRO Mode (Digital Mode) of Operation ................2.4-2 2.4.5 Main Board Overview ........................ 2.4-2 2.4.6 Vocoder Circuitry Overview .......................
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Table of Contents Chapter 3.5 900 MHz Radio Power ............3.5-1 3.5.1 Introduction..........................3.5-1 3.5.2 Radio Power Up or Down......................3.5-1 3.5.3 General............................3.5-1 3.5.4 B+ Routing for 900 MHz Band Main Board ................3.5-2 3.5.5 B+ and +5V Routing for VOCON....................3.5-3 Chapter 4.1 VHF Detailed Theories of Operation.......
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viii Table of Contents 4.2.6.2.1 MAKO IC (U701)....................4.2-10 4.2.6.2.2 Regulator ......................4.2-11 4.2.6.2.3 Audio Pre-Amplifier ..................... 4.2-11 4.2.6.2.4 Audio Power Amplifier..................4.2-11 4.2.6.3 Interface Support Section .................... 4.2-12 4.2.6.3.1 MAKO IC U701 ....................4.2-12 4.2.6.3.2 ESD Protection Circuitry ..................4.2-13 4.2.6.3.3 Universal Connector (Side Connector) Interface Circuitry ........
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Table of Contents 4.4.6 VOCON Functional Blocks ......................4.4-5 4.4.6.1 Controller and Memory Section ..................4.4-5 4.4.6.1.1 Patriot IC (U800)....................4.4-5 4.4.6.1.2 SRAM (U804) ....................... 4.4-8 4.4.6.1.3 Flash Memory (U803) ................... 4.4-8 4.4.6.2 Audio and Power Section .................... 4.4-10 4.4.6.2.1 MAKO IC (U701)....................4.4-10 4.4.6.2.2 Regulator ......................
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Table of Contents Chapter 5 Troubleshooting Procedures ..........5-1 Introduction........................... 5-1 Handling Precautions ........................5-1 Voltage Measurement and Signal Tracing ................... 5-1 Standard Bias Table ........................5-2 Power-Up Self-Check Errors ......................5-3 Operational Error Codes....................... 5-4 5.6.1 Power-Up, Self-Check Diagnostics, and Repair (Not for Field Use) ......... 5-4 Chapter 6.1 VHF Troubleshooting Charts ..........
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Table of Contents 6.2.14 No Display Troubleshooting Chart (1 of 3) ................6.2-13 6.2.15 No Display Troubleshooting Chart (2 of 3) ................6.2-14 6.2.16 No Display Troubleshooting Chart (3 of 3) ................6.2-15 6.2.17 UHF Range 1 Receive RF Troubleshooting Chart ..............6.2-16 6.2.18 VOCON Receive Audio Troubleshooting Chart ..............
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Table of Contents 6.4.12 Zone/Channel Select Error Troubleshooting Chart ..............6.4-11 6.4.13 Top/Side Button Error Troubleshooting Chart ................. 6.4-12 6.4.14 No Display Troubleshooting Chart (1 of 3) ................6.4-13 6.4.15 No Display Troubleshooting Chart (2 of 3) ................6.4-14 6.4.16 No Display Troubleshooting Chart (3 of 3) ................6.4-15 6.4.17 700/800 MHz Receive RF Troubleshooting Chart..............
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Table of Contents xiii 7.1.10 TP6 PCIC Control Voltage ...................... 7.1-11 7.1.11 PP7 TX LO ..........................7.1-12 7.1.12 PP8 Higher Level Voltage Multiplier..................7.1-13 7.1.13 PP9 Superfilter Output ......................7.1-14 7.1.14 PP11 Prescalar Input to FracN Synthesizer................7.1-15 7.1.15 PP12 Reference Crystal Output ....................7.1-16 7.1.16 TP13 Mod In..........................
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Table of Contents 7.2.15 PP12 Reference Crystal Output ....................7.2-16 7.2.16 TP13 Mod In ..........................7.2-17 7.2.17 TP14 1st LO Control Voltage....................7.2-18 7.2.18 PP15 VCO Output ........................7.2-19 7.2.19 PP17 Frequency Out (19.2 MHz) .................... 7.2-21 7.2.20 PP18 RX RF Input at Antenna Switch ..................7.2-22 7.2.21 PP19 Antenna Switch Bias......................
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Table of Contents xvii 7.5.26 PP22 Analog 5V ........................7.5-27 7.5.27 PP23 Preselector 1 Output...................... 7.5-28 7.5.28 PP24 Low-Noise Amplifier Output................... 7.5-29 7.5.29 PP25 Preselector 2 Output...................... 7.5-30 7.5.30 PP26 Mixer Out (IF) ........................ 7.5-31 7.5.31 PP27 Crystal Filter Out......................7.5-32 7.5.32 PP28 Abacus Analog 3V ......................
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Chapter 9.5 900MHz Schematics, Board Overlays, and Parts Lists 9.5-1 9.5.1 Introduction ..........................9.5-1 Appendix A Replacement Parts Ordering..........A-1 Basic Ordering Information......................A-1 Radio Board Ordering Information....................A-1 Motorola Online ..........................A-1 Mail Orders ...........................A-1 Telephone Orders.........................A-2 Fax Orders............................A-2 Parts Identification ........................A-2 Product Customer Service......................A-2 Glossary ..................
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List of Figures List of Figures Figure 3.1-1.B+ Routing for VHF Main Board ..................3.1-2 Figure 3.1-2.XTS 2500/XTS 2500I DC Distribution (for all other kits) ............ 3.1-3 Figure 3.2-1.B+ Routing for Main Board ....................3.2-2 Figure 3.2-2.XTS 2500/XTS 2500I DC Distribution (for all other kits) ............ 3.2-3 Figure 3.3-1.B+ Routing for Main Board ....................
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List of Figures Figure 9.1-11.PMLD4303A/ PMLD4303D Frequency Generation Unit (FGU) and Digital to Analog Converter (DAC) Schematic .................... 9.1-12 Figure 9.1-12.PMLD4303A Frequency Generation Unit (FGU) Schematic - Sheet 1 of 3 ....9.1-13 Figure 9.1-13.PMLD4303D Frequency Generation Unit (FGU) Schematic - Sheet 1 of 3 ....9.1-14 Figure 9.1-14.PMLD4303A/ PMLD4303D Frequency Generation Unit (FGU) Schematic - Sheet 2 of 3 ........................
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List of Figures Figure 9.3-2.PMLE4427A Controls ......................9.3-3 Figure 9.3-3.PMLE4427B Controls ......................9.3-4 Figure 9.3-4.PMLE4427A/ PMLE4427B Controller Interface Schematic ..........9.3-5 Figure 9.3-5.PMLE4427A/ PMLE4427B Patriot Bravo Revision Schematic .......... 9.3-6 Figure 9.3-6.PMLE4427A/ PMLE4427B Digital to Analog Schematic............ 9.3-7 Figure 9.3-7.PMLE4427A/ PMLE4427B Frequency Generation Unit (FGU) Schematic......9.3-8 Figure 9.3-8.PMLE4427A/ PMLE4427B Interface and Accessories Schematic ........
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xxii List of Figures Figure 9.5-7.MAKO DC and Audio Schematic - Sheet 1 of 2..............9.5-8 Figure 9.5-8.MAKO DC and Audio Schematic - Sheet 2 of 2..............9.5-9 Figure 9.5-9.Memory Schematic ......................9.5-10 Figure 9.5-10.Frequency Generation Unit (FGU) Schematic - Sheet 1 of 3......... 9.5-11 Figure 9.5-11.Frequency Generation Unit (FGU) Schematic - Sheet 2 of 3.........
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List of Tables xxiii List of Tables Table 3.1-1. Power Supply Configuration for VOCON Section .............. 3.1-4 Table 3.2-1. Power Supply Configuration for VOCON Section .............. 3.2-4 Table 3.3-1. Power Supply Configuration for VOCON Section .............. 3.3-4 Table 3.4-1. Power Supply Configuration for VOCON Section .............. 3.4-4 Table 3.5-1.
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ASTRO XTS 2500/XTS 2500 Digital Portable Radio User Guide (CD) (all models)....PMLN4940_ ASTRO XTS 2500 Digital Portable Radio Basic Service Manual..........6816984H01 ASTRO XTS 2250 Digital Portable Radio Basic Model User Guide (CD) ........PMLN4942_ ASTRO XTS 2250 Digital Portable Radio Model 1.5 User Guide (CD)........PMLN4942_ ASTRO XTS 2250 Digital Portable Radio Advanced Model User Guide (CD)......PMLN4942_...
This manual is to be used in conjunction with the ASTRO XTS 2500/XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems. Conduct the basic performance checks first. This will verify the actual need for analyzing the radio and help pinpoint the functional problem area.
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Introduction: Notations Used in This Manual DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or injury. D A N G E R In this publication you will also find the use of the asterisk symbol (*) to indicate a negative or NOT logic true signal.
Chapter 2.1 VHF Overall Characteristics 2.1.1 Introduction This manual is to be used in conjunction with the ASTRO XTS 2500/XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
2.1-2 VHF Overall Characteristics: Analog Mode of Operation-Transmitting In the VOCON circuitry, the DSP decodes the information in the signal and identifies the appropriate destination for it. For a voice signal, the DSP will route the digital voice data to the CODEC for conversion to an analog signal.
VHF Overall Characteristics: Vocoder Circuitry Overview 2.1-3 The digital back-end IC (ABACUS-III) consists of the following: • an amplifier • the second mixer • an IF analog-to-digital converter • a baseband down-converter, and • a 18 MHz synthesis circuit to provide a sampling clock to the circuitry. The second LO is generated by discrete components external to the IC.
Chapter 2.2 UHF1 Overall Characteristics 2.2.1 Introduction This manual is to be used in conjunction with the ASTRO XTS 2500/XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
2.2-2 UHF1 Overall Characteristics: Analog Mode of Operation-Transmitting In the VOCON circuitry, the DSP decodes the information in the signal and identifies the appropriate destination for it. For a voice signal, the DSP will route the digital voice data to the CODEC for conversion to an analog signal.
UHF1 Overall Characteristics: Vocoder Circuitry Overview 2.2-3 The digital back-end IC (ABACUS-III) consists of the following: • an amplifier • the second mixer • an IF analog-to-digital converter • a baseband down-converter, and • a 18 MHz synthesis circuit to provide a sampling clock to the circuitry. The second LO is generated by discrete components external to the IC.
Chapter 2.3 UHF2 Overall Characteristics 2.3.1 Introduction This manual is to be used in conjunction with the ASTRO XTS 2500/XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
2.3-2 UHF2 Overall Characteristics: Analog Mode of Operation-Transmitting In the VOCON circuitry, the DSP decodes the information in the signal and identifies the appropriate destination for it. For a voice signal, the DSP will route the digital voice data to the CODEC for conversion to an analog signal.
UHF2 Overall Characteristics: Vocoder Circuitry Overview 2.3-3 The digital back-end IC (ABACUS-III) consists of the following: • an amplifier • the second mixer • an IF analog-to-digital converter • a baseband down-converter, and • a 18 MHz synthesis circuit to provide a sampling clock to the circuitry. The second LO is generated by discrete components external to the IC.
Chapter 2.4 700/800 MHz Overall Characteristics 2.4.1 Introduction This manual is to be used in conjunction with the ASTRO XTS 2500/XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
2.4-2 700/800 MHz Overall Characteristics: Analog Mode of Operation-Transmitting In the VOCON circuitry, the DSP decodes the information in the signal and identifies the appropriate destination for it. For a voice signal, the DSP will route the digital voice data to the CODEC for conversion to an analog signal.
700/800 MHz Overall Characteristics: Vocoder Circuitry Overview 2.4-3 The digital back-end IC (ABACUS-III) consists of the following: • an amplifier • the second mixer • an IF analog-to-digital converter • a baseband down-converter, and • a 18 MHz synthesis circuit to provide a sampling clock to the circuitry. The second LO is generated by discrete components external to the IC.
Chapter 2.5 900MHz Overall Characteristics 2.5.1 Introduction This manual is to be used in conjunction with the ASTRO XTS 2500/XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
2.5-2 900MHz Overall Characteristics: Analog Mode of Operation-Transmitting In the VOCON circuitry, the DSP decodes the information in the signal and identifies the appropriate destination for it. For a voice signal, the DSP will route the digital voice data to the CODEC for conversion to an analog signal.
900MHz Overall Characteristics: Vocoder Circuitry Overview 2.5-3 The digital back-end IC (ABACUS-III) consists of the following: • an amplifier • the second mixer • an IF analog-to-digital converter • a baseband down-converter, and • a 18 MHz synthesis circuit to provide a sampling clock to the circuitry. The second LO is generated by discrete components external to the IC.
In the XTS 2500/XTS 2500 radio, power (B+) is distributed to one board that contains both the transceiver and controller sections. There is an additional backup battery (Motorola part number 6003710K08) mounted directly on the board; see the basic service manual for details.
3.1-2 VHF Radio Power: B+ Routing for VHF Band Main Board 3.1.4 B+ Routing for VHF Band Main Board Refer to Figure 3.1-1 and the appropriate schematic diagram in the back of this manual. Raw B+ (7.5V) from the battery enters the radio through a 3-contact connector (B500). From B500 it is routed through a ferrite bead (E500) to the fuse (F500) where RAW_B+ is distributed to the transmitter and the RF section is supplied by RFSW_B+.
VHF Radio Power: B+ and +5V Routing for VOCON 3.1-3 3.1.5 B+ and +5V Routing for VOCON Refer to Figure 3.1-2 and the appropriate schematic diagrams in the back of this manual. Battery RF Section VOCON Section UNSW_B+ UNSW_B+ Fuse SW_B+ Q703 Q700...
3.1-4 VHF Radio Power: B+ and +5V Routing for VOCON Table 3.1-1 lists the supply voltages and the circuits that use these voltages. Table 3.1-1. Power Supply Configuration for VOCON Section Supply Unprogrammed Output Voltage Supply Type Circuits Supplied Name Output Voltage UNSW_B+ 6V - 9V...
In the XTS 2500/XTS 2500 radio, power (B+) is distributed to one board that contains both the transceiver and controller sections. There is an additional backup battery (Motorola part number 6003710K08) mounted directly on the board; see the basic service manual for details.
3.2-2 UHF1 Radio Power: B+ Main Board Routing 3.2.4 B+ Main Board Routing Refer to Figure 3.2-1 and the appropriate schematic diagram in the back of this manual. Raw B+ (7.5V) from the battery enters the radio through a 3-contact connector (B500). UNSW_B+ (through fuse F500), RAW_B+ and mechanical switch S501 derives power from it.
UHF1 Radio Power: B+ and +5V Routing for VOCON 3.2-3 3.2.5 B+ and +5V Routing for VOCON Refer to Figure 3.2-2 and the appropriate schematic diagrams in the back of this manual. Battery RF Section VOCON Section UNSW_B+ UNSW_B+ Fuse SW_B+ Q703 Q700...
3.2-4 UHF1 Radio Power: B+ and +5V Routing for VOCON Table 3.2-1 lists the supply voltages and the circuits that use these voltages. Table 3.2-1. Power Supply Configuration for VOCON Section Supply Unprogrammed Output Voltage Supply Type Circuits Supplied Name Output Voltage UNSW_B+ 6V - 9V...
In the XTS 2500/XTS 2500 radio, power (B+) is distributed to one board that contains both the transceiver and controller sections. There is an additional backup battery (Motorola part number 6003710K08) mounted directly on the board; see the basic service manual for details.
3.3-2 UHF2 Radio Power: B+ Routing for UHF2 Band Main Board 3.3.4 B+ Routing for UHF2 Band Main Board Refer to Figure 3.3-1 and the appropriate schematic diagram in the back of this manual. Raw B+ (7.5V) from the battery enters the radio through a 3-contact connector (B500). UNSW_B+ (through fuse F500), RAW_B+ and mechanical switch S501 derives power from it.
UHF2 Radio Power: B+ and +5V Routing for VOCON 3.3-3 3.3.5 B+ and +5V Routing for VOCON Refer to Figure 3.3-2 and the appropriate schematic diagrams in the back of this manual. Battery RF Section VOCON Section UNSW_B+ UNSW_B+ Fuse SW_B+ Q703 Q700...
3.3-4 UHF2 Radio Power: B+ and +5V Routing for VOCON Table 3.3-1 lists the supply voltages and the circuits that use these voltages. Table 3.3-1. Power Supply Configuration for VOCON Section Supply Unprogrammed Output Voltage Supply Type Circuits Supplied Name Output Voltage UNSW_B+ 6V - 9V...
In the XTS 2500/XTS 2500 radio, power (B+) is distributed to one board that contains both the transceiver and controller sections. There is an additional backup battery (Motorola part number 6003710K08) mounted directly on the board; see the basic service manual for details.
3.4-2 700/800 MHz Radio Power: B+ Routing for 700/800 MHz Band Main Board 3.4.4 B+ Routing for 700/800 MHz Band Main Board Refer to Figure 3.4-1 and the appropriate schematic diagram in the back of this manual. Raw B+ (7.5V) from the battery enters the radio through a 3-contact connector (B500). From B500 it is routed through a ferrite bead (E500) to the fuse (F500) where RAW_B+ is distributed to the transmitter and the RF section is supplied by RFSW_B+.
700/800 MHz Radio Power: B+ and +5V Routing for VOCON 3.4-3 3.4.5 B+ and +5V Routing for VOCON Refer to Figure 3.4-2 and the appropriate schematic diagrams in the back of this manual. Battery RF Section VOCON Section UNSW_B+ UNSW_B+ Fuse SW_B+ Q703...
3.4-4 700/800 MHz Radio Power: B+ and +5V Routing for VOCON Table 3.4-1 lists the supply voltages and the circuits that use these voltages. Table 3.4-1. Power Supply Configuration for VOCON Section Supply Unprogrammed Output Voltage Supply Type Circuits Supplied Name Output Voltage UNSW_B+...
In the XTS 2500/XTS 2500 radio, power (B+) is distributed to one board that contains both the transceiver and controller sections. There is an additional backup battery (Motorola part number 6003710K08) mounted directly on the board; see the basic service manual for details.
3.5-2 900 MHz Radio Power: B+ Routing for 900 MHz Band Main Board 3.5.4 B+ Routing for 900 MHz Band Main Board Refer to Figure 3.5-1 and the appropriate schematic diagram in the back of this manual. Raw B+ (7.5V) from the battery enters the radio through a 3-contact connector (B500). From B500 it is routed through a ferrite bead (E500) to the fuse (F500) where RAW_B+ is distributed to the transmitter and the RF section is supplied by RFSW_B+.
900 MHz Radio Power: B+ and +5V Routing for VOCON 3.5-3 3.5.5 B+ and +5V Routing for VOCON Refer to Figure 3.5-2 and the appropriate schematic diagrams in the back of this manual. Battery RF Section VOCON Section UNSW_B+ UNSW_B+ Fuse SW_B+ Q703...
3.5-4 900 MHz Radio Power: B+ and +5V Routing for VOCON Table 3.5-1 lists the supply voltages and the circuits that use these voltages. Table 3.5-1. Power Supply Configuration for VOCON Section Supply Unprogrammed Output Voltage Supply Type Circuits Supplied Name Output Voltage UNSW_B+...
This detailed theory of operation can help isolate the problem to a particular component. This manual is to be used in conjunction with the ASTRO XTS 2500, XTS 2500 , XTS 2250, XTS 1500, MT 1500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
4.1-2 VHF Detailed Theories of Operation: Antenna Switch The 13V, being generated by the positive voltage multiplier circuitry, should be present at pin A2 of U202. The serial interface (SRL) is connected to the microprocessor via the data line (pin F1 of U202), the clock line (pin F4 of U202), and the chip-enable line (pin G1 of U202).
VHF Detailed Theories of Operation: Receiver 4.1-3 4.1.4.1 Front End For the purposes of this discussion, the receiver front end is defined as being the circuitry from the antenna switch to the output of the IF crystal filter. The VHF front end converts the received RF signal to the 1st IF frequency of 44.85 MHz, while at the same time providing for spurious immunity and adjacent channel selectivity.
4.1-4 VHF Detailed Theories of Operation: Transmitter The ABACUS IC (U401) is electronically programmable. The amount of filtering, which is dependent on the radio channel spacing and signal type, is controlled by the microcomputer. Additional filtering, which used to be provided externally by a conventional ceramic filter, is replaced by internal digital filters in the ABACUS IC.
VHF Detailed Theories of Operation: VOCON Functional Blocks 4.1-5 U103 senses the temperature of the printed circuit board (PCB) near the RF Power Amplifier (Q101) and provides a dc level representative of this temperature to pin 30 of the PCIC. The PCIC uses this input to cut back the output power level after a certain temperature threshold is reached.
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4.1-6 VHF Detailed Theories of Operation: VOCON Functional Blocks 4.1.6.1.1.1 Microcontroller Unit (MCU) The MCU portion of the Patriot has 22.5Kx32 bits of internal RAM and 1Kx32 bits of internal ROM. The internal ROM is used for the bootstrapping code. The MCU has several peripherals, including the following: •...
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VHF Detailed Theories of Operation: VOCON Functional Blocks 4.1-7 One-Wire Interface The MCU has a One-Wire Interface module that is used to communicate to a One-Wire device like a USB cable or a smart battery using the Dallas Semiconductor protocol. This module has one external pin, OWIRE_DAT (U800 pin F6), and it uses the GPIO voltage logic level.
4.1-8 VHF Detailed Theories of Operation: VOCON Functional Blocks Universal Serial Bus (USB) The Patriot's USB peripheral, shared by the MCU and the DSP, provides the required buffering and protocol to communicate on the Universal Serial Bus. The Patriot supports USB slave functionality. •...
VHF Detailed Theories of Operation: VOCON Functional Blocks 4.1-9 The RESET_OUT of the Patriot IC (U800) is at the GPIO voltage logic level (see section 4.1.6.1.1.). Components CR800 and R812 are used to convert the voltage down to a 1.8-volt logic level, and this 1.8 volt reset signal is fed to the Flash RESET pin.
4.1-10 VHF Detailed Theories of Operation: VOCON Functional Blocks 4.1.6.2 Audio and Power Section Two main ICs reside in the audio and power section of the schematic diagram: • the MAKO IC (U701) • the VSW1 Driver IC (Q702) 4.1.6.2.1 MAKO IC (U701) The MAKO IC is a mixed-signal IC that provides control, clock generation, digital support, audio, and voltage regulation functionality.
VHF Detailed Theories of Operation: VOCON Functional Blocks 4.1-11 4.1.6.2.1.3 Audio Circuitry A16-bit CODEC is integrated into the MAKO IC and programmable by the dual-core processor through the SPI bus. The CODEC converts microphone audio data into a digital bit stream for processor by the DSP and converts receive audio data that was processed by the DSP into an analog audio signal for amplification to a speaker.
4.1-12 VHF Detailed Theories of Operation: VOCON Functional Blocks 4.1.6.3 Interface Support Section The interface support section includes the following: • the MAKO IC (U701) • the ESD protection circuitry, and • the universal connector interface circuitry. 4.1.6.3.1 MAKO IC U701 The digital-support functions are performed by the MAKO IC.
VHF Detailed Theories of Operation: VOCON Functional Blocks 4.1-13 These new accessories are to ground, designator R666, of the side connector. When this occurs, the ONE_WIRE_OPT is asserted and the dual-core processor detects the change. The dual-core processor then sends a command through the SPI lines to the U701 MAKO IC to connect the side connector One-Wire line to the dual-core processor One-Wire bus.
4.1-14 VHF Detailed Theories of Operation: VOCON Functional Blocks Most of the signals are extensions of circuits described in other areas of this manual. However, there are two option select pins used to configure special modes: Option Select 1 and Option Select 2. These pins are controlled by accessories connected to the universal connector.
VHF Detailed Theories of Operation: VOCON Functional Blocks 4.1-15 4.1.6.3.4 The Option Board The Option Board consists of the "keypad module" and the "display module" for models II and III of the XTS 2500/XTS 2500 radio. 4.1.6.3.4.1 Display Module An optional integral 96 pixels by 64 pixels LCD display module is available with either a 3 x 2 keypad with a navigational button (Model II radios), or 3 x 6 keypad with a navigational button (Model III radios).
4.1-16 VHF Detailed Theories of Operation: VOCON Functional Blocks 4.1.6.3.5 Encryption Module The encryption module (secure models only) connects directly to the VOCON board and interfaces directly with the vocoder digital circuitry. It contains one custom microcontroller IC (Armour) to perform digital, numerical, encryption algorithms.
VHF Detailed Theories of Operation: VOCON Functional Blocks 4.1-17 4.1.6.3.6 System Clocks The Patriot is supplied with two clocks: 1. The first clock, a 16.8 MHz sine wave, comes from the RF portion of the radio. It is conditioned by the clock buffer circuit, which includes Q709, R722, R740, R743, R729, R797, C726, C725 and C727.
4.1-18 VHF Detailed Theories of Operation: VOCON Functional Blocks 4.1.6.5 Receive Audio Path Refer to Figure 4.1-5. The receive audio data comes from the Abacus III IC U401 (DOUTA) to the dual-core processor SRDB pin. The DSP decodes the data and sends it out through the CODEC_RX line to the MAKO IC VC_RX3V pin.
This detailed theory of operation can help isolate the problem to a particular component. This manual is to be used in conjunction with the ASTRO XTS 2500, XTS 2500 , XTS 2250, XTS 1500, MT 1500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
4.2-2 UHF1 Detailed Theories of Operation: Antenna Switch • A filter for the regulated 5 and 3 volts The 13V, being generated by the positive voltage multiplier circuitry, should be present at pin 47 of U202. The serial interface (SRL) is connected to the microprocessor via the data line (pin 7 of U202), the clock line (pin 8 of U202), and the chip-enable line (pin 9 of U202).
UHF1 Detailed Theories of Operation: Receiver 4.2-3 4.2.4 Receiver The receiver consists of the following: • Front end • Back end 4.2.4.1 Front End For the purposes of this discussion, the receiver front end is defined as being the circuitry from the antenna switch to the output of the IF crystal filter.
4.2-4 UHF1 Detailed Theories of Operation: Transmitter 4.2.4.2 Back End In the ABACUS IC (U401), the first IF frequency is amplified and then down-converted to the second IF frequency (2.25 MHz). At this point, the analog signal is converted into two digital bit streams by a sigma-delta A/D converter.
UHF1 Detailed Theories of Operation: VOCON Functional Blocks 4.2-5 U103 senses the temperature of the printed circuit board (PCB) near the RF Power Amplifier (Q101) and provides a dc level representative of this temperature to pin 30 of the PCIC. The PCIC uses this input to cut back the output power level after a certain temperature threshold is reached.
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4.2-6 UHF1 Detailed Theories of Operation: VOCON Functional Blocks 4.2.6.1.1.1 Microcontroller Unit (MCU) The MCU portion of the Patriot has 22.5Kx32 bits of internal RAM and 1Kx32 bits of internal ROM. The internal ROM is used for the bootstrapping code. The MCU has several peripherals, including the following: •...
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UHF1 Detailed Theories of Operation: VOCON Functional Blocks 4.2-7 One-Wire Interface The MCU has a One-Wire Interface module that is used to communicate to a One-Wire device like a USB cable or a smart battery using the Dallas Semiconductor protocol. This module has one external pin, OWIRE_DAT (U800 pin F6), and it uses the GPIO voltage logic level.
4.2-8 UHF1 Detailed Theories of Operation: VOCON Functional Blocks Universal Serial Bus (USB) The Patriot's USB peripheral, shared by the MCU and the DSP, provides the required buffering and protocol to communicate on the Universal Serial Bus. The Patriot supports USB slave functionality. •...
UHF1 Detailed Theories of Operation: VOCON Functional Blocks 4.2-9 4.2.6.1.3 Flash Memory (U803) The Flash memory IC is a 8-megabyte CMOS device with simultaneous read/write or simultaneous read/erase operation capabilities with 70 ns access speed. It is supplied with 1.8 volts. The Flash memory has its 22 address lines and 16 data lines connected to the EIM of the Patriot IC through the ADDR(23:0) and DATA(15:0) busses.
4.2-10 UHF1 Detailed Theories of Operation: VOCON Functional Blocks 4.2.6.2 Audio and Power Section Two main ICs reside in the audio and power section of the schematic diagram: • the MAKO IC (U701) • the VSW1 Driver IC (Q702) 4.2.6.2.1 MAKO IC (U701) The MAKO IC is a mixed-signal IC that provides control, clock generation, digital support, audio, and voltage regulation functionality.
UHF1 Detailed Theories of Operation: VOCON Functional Blocks 4.2-11 4.2.6.2.1.3 Audio Circuitry A16-bit CODEC is integrated into the MAKO IC and programmable by the dual-core processor through the SPI bus. The CODEC converts microphone audio data into a digital bit stream for processor by the DSP and converts receive audio data that was processed by the DSP into an analog audio signal for amplification to a speaker.
4.2-12 UHF1 Detailed Theories of Operation: VOCON Functional Blocks 4.2.6.3 Interface Support Section The interface support section includes the following: • the MAKO IC (U701) • the ESD protection circuitry, and • the universal connector interface circuitry. 4.2.6.3.1 MAKO IC U701 The digital-support functions are performed by the MAKO IC.
UHF1 Detailed Theories of Operation: VOCON Functional Blocks 4.2-13 These new accessories are to ground, designator R666, of the side connector. When this occurs, the ONE_WIRE_OPT is asserted and the dual-core processor detects the change. The dual-core processor then sends a command through the SPI lines to the U701 MAKO IC to connect the side connector One-Wire line to the dual-core processor One-Wire bus.
4.2-14 UHF1 Detailed Theories of Operation: VOCON Functional Blocks Most of the signals are extensions of circuits described in other areas of this manual. However, there are two option select pins used to configure special modes: Option Select 1 and Option Select 2. These pins are controlled by accessories connected to the universal connector.
UHF1 Detailed Theories of Operation: VOCON Functional Blocks 4.2-15 4.2.6.3.4 The Option Board The Option Board consists of the "keypad module" and the "display module" for models II and III of the XTS 2500/XTS 2500 radio. 4.2.6.3.4.1 Display Module An optional integral 96 pixels by 64 pixels LCD display module is available with either a 3 x 2 keypad with a navigational button (Model II radios), or 3 x 6 keypad with a navigational button (Model III radios).
4.2-16 UHF1 Detailed Theories of Operation: VOCON Functional Blocks 4.2.6.3.5 Encryption Module The encryption module (secure models only) connects directly to the VOCON board and interfaces directly with the vocoder digital circuitry. It contains one custom microcontroller IC (Armour) to perform digital, numerical, encryption algorithms.
UHF1 Detailed Theories of Operation: VOCON Functional Blocks 4.2-17 4.2.6.3.6 System Clocks The Patriot is supplied with two clocks: 1. The first clock, a 16.8 MHz sine wave, comes from the RF portion of the radio. It is conditioned by the clock buffer circuit, which includes Q709, R722, R740, R743, R729, R797, C726, C725 and C727.
4.2-18 UHF1 Detailed Theories of Operation: VOCON Functional Blocks 4.2.6.5 Receive Audio Path Refer to Figure 4.2-5. The receive audio data comes from the Abacus III IC U401 (DOUTA) to the dual-core processor SRDB pin. The DSP decodes the data and sends it out through the CODEC_RX line to the MAKO IC VC_RX3V pin.
This detailed theory of operation can help isolate the problem to a particular component. This manual is to be used in conjunction with the ASTRO XTS 2500, XTS 2500 , XTS 2250, XTS 1500, MT 1500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
4.3-2 UHF2 Detailed Theories of Operation: Antenna Switch The 13V, being generated by the positive voltage multiplier circuitry, should be present at pin 47 of U202. The serial interface (SRL) is connected to the microprocessor via the data line (pin 7 of U202), the clock line (pin 8 of U202), and the chip-enable line (pin 9 of U202).
UHF2 Detailed Theories of Operation: Receiver 4.3-3 4.3.4 Receiver The receiver consists of the following: • Front end • Back end 4.3.4.1 Front End For the purposes of this discussion, the receiver front end is defined as being the circuitry from the antenna switch to the output of the IF crystal filter.
4.3-4 UHF2 Detailed Theories of Operation: Transmitter 4.3.4.2 Back End In the ABACUS IC (U401), the first IF frequency is amplified and then down-converted to the second IF frequency (2.25 MHz). At this point, the analog signal is converted into two digital bit streams by a sigma-delta A/D converter.
UHF2 Detailed Theories of Operation: VOCON Functional Blocks 4.3-5 Pin 32 of the PCIC powers the Temperature Sense IC (U103) and forward biases the antenna switch diodes (D170 and D171) while the radio is in transmit mode. This routes the RF signal from the transmitter to the antenna, as explained above.
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4.3-6 UHF2 Detailed Theories of Operation: VOCON Functional Blocks 4.3.6.1.1.1 Microcontroller Unit (MCU) The MCU portion of the Patriot has 22.5Kx32 bits of internal RAM and 1Kx32 bits of internal ROM. The internal ROM is used for the bootstrapping code. The MCU has several peripherals, including the following: •...
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UHF2 Detailed Theories of Operation: VOCON Functional Blocks 4.3-7 One-Wire Interface The MCU has a One-Wire Interface module that is used to communicate to a One-Wire device like a USB cable or a smart battery using the Dallas Semiconductor protocol. This module has one external pin, OWIRE_DAT (U800 pin F6), and it uses the GPIO voltage logic level.
4.3-8 UHF2 Detailed Theories of Operation: VOCON Functional Blocks Universal Serial Bus (USB) The Patriot's USB peripheral, shared by the MCU and the DSP, provides the required buffering and protocol to communicate on the Universal Serial Bus. The Patriot supports USB slave functionality. •...
UHF2 Detailed Theories of Operation: VOCON Functional Blocks 4.3-9 The RESET_OUT of the Patriot IC (U800) is at the GPIO voltage logic level (see section 4.1.6.1.1). Components CR800 and R812 are used to convert the voltage down to a 1.8-volt logic level, and this 1.8 volt reset signal is fed to the Flash RESET pin.
4.3-10 UHF2 Detailed Theories of Operation: VOCON Functional Blocks 4.3.6.2 Audio and Power Section Two main ICs reside in the audio and power section of the schematic diagram: • the MAKO IC (U701) • the VSW1 Driver IC (Q702) 4.3.6.2.1 MAKO IC (U701) The MAKO IC is a mixed-signal IC that provides control, clock generation, digital support, audio, and voltage regulation functionality.
UHF2 Detailed Theories of Operation: VOCON Functional Blocks 4.3-11 4.3.6.2.1.3 Audio Circuitry A16-bit CODEC is integrated into the MAKO IC and programmable by the dual-core processor through the SPI bus. The CODEC converts microphone audio data into a digital bit stream for processor by the DSP and converts receive audio data that was processed by the DSP into an analog audio signal for amplification to a speaker.
4.3-12 UHF2 Detailed Theories of Operation: VOCON Functional Blocks 4.3.6.3 Interface Support Section The interface support section includes the following: • the MAKO IC (U701) • the ESD protection circuitry, and • the universal connector interface circuitry. 4.3.6.3.1 MAKO IC U701 The digital-support functions are performed by the MAKO IC.
UHF2 Detailed Theories of Operation: VOCON Functional Blocks 4.3-13 These new accessories are to ground, designator R666, of the side connector. When this occurs, the ONE_WIRE_OPT is asserted and the dual-core processor detects the change. The dual-core processor then sends a command through the SPI lines to the U701 MAKO IC to connect the side connector One-Wire line to the dual-core processor One-Wire bus.
4.3-14 UHF2 Detailed Theories of Operation: VOCON Functional Blocks Most of the signals are extensions of circuits described in other areas of this manual. However, there are two option select pins used to configure special modes: Option Select 1 and Option Select 2. These pins are controlled by accessories connected to the universal connector.
UHF2 Detailed Theories of Operation: VOCON Functional Blocks 4.3-15 4.3.6.3.4 The Option Board The Option Board consists of the "keypad module" and the "display module" for models II and III of the XTS 2500/XTS 2500 radio. 4.3.6.3.4.1 Display Module An optional integral 96 pixels by 64 pixels LCD display module is available with either a 3 x 2 keypad with a navigational button (Model II radios), or 3 x 6 keypad with a navigational button (Model III radios).
4.3-16 UHF2 Detailed Theories of Operation: VOCON Functional Blocks 4.3.6.3.5 Encryption Module The encryption module (secure models only) connects directly to the VOCON board and interfaces directly with the vocoder digital circuitry. It contains one custom microcontroller IC (Armour) to perform digital, numerical, encryption algorithms.
UHF2 Detailed Theories of Operation: VOCON Functional Blocks 4.3-17 4.3.6.3.6 System Clocks The Patriot is supplied with two clocks: 1. The first clock, a 16.8 MHz sine wave, comes from the RF portion of the radio. It is conditioned by the clock buffer circuit, which includes Q709, R722, R740, R729, R797, C726, C725 and C727.
4.3-18 UHF2 Detailed Theories of Operation: VOCON Functional Blocks 4.3.6.5 Receive Audio Path Refer to Figure 4.3-5. The receive audio data comes from the Abacus III IC U401 (DOUTA) to the dual-core processor SRDB pin. The DSP decodes the data and sends it out through the CODEC_RX line to the MAKO IC VC_RX3V pin.
This detailed theory of operation can help isolate the problem to a particular component. This manual is to be used in conjunction with the ASTRO XTS 2500, XTS 2500 , XTS 2250, XTS 1500, MT 1500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
4.4-2 700/800 MHz Detailed Theories of Operation: Antenna Switch • A charge pump • An A/D converter for low-frequency digital modulation • A balance attenuator to balance the high-frequency analog modulation to the low-frequency digital modulation • A 13V positive voltage multiplier •...
700/800 MHz Detailed Theories of Operation: Receiver 4.4-3 4.4.4 Receiver The receiver consists of the following: • Front end • Back end 4.4.4.1 Front End For the purposes of this discussion, the receiver front end is defined as being the circuitry from the antenna switch to the output of the IF crystal filter.
4.4-4 700/800 MHz Detailed Theories of Operation: Transmitter 4.4.4.2 Back End In the ABACUS IC (U401), the first IF frequency is amplified and then down-converted to the second IF frequency (2.25 MHz). At this point, the analog signal is converted into two digital bit streams by a sigma-delta A/D converter.
700/800 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.4-5 U102 senses the temperature of the printed circuit board (PCB) near the N-Channel MOSFET final (Q101) and provides a DC level representative of this temperature to pin 30 of the PCIC. The PCIC uses this input to cut back the output power level after a certain temperature threshold is reached.
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4.4-6 700/800 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.4.6.1.1.1 Microcontroller Unit (MCU) The MCU portion of the Patriot has 22.5Kx32 bits of internal RAM and 1Kx32 bits of internal ROM. The internal ROM is used for the bootstrapping code. The MCU has several peripherals, including the following: •...
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700/800 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.4-7 One-Wire Interface The MCU has a One-Wire Interface module that is used to communicate to a One-Wire device like a USB cable or a smart battery using the Dallas Semiconductor protocol. This module has one external pin, OWIRE_DAT (U800 pin F6), and it uses the GPIO voltage logic level.
4.4-8 700/800 MHz Detailed Theories of Operation: VOCON Functional Blocks Universal Serial Bus (USB) The Patriot's USB peripheral, shared by the MCU and the DSP, provides the required buffering and protocol to communicate on the Universal Serial Bus. The Patriot supports USB slave functionality. •...
700/800 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.4-9 The RESET_OUT of the Patriot IC (U800) is at the GPIO voltage logic level (see section 4.4.6.1.1.). Components CR800 and R812 are used to convert the voltage down to a 1.8-volt logic level, and this 1.8 volt reset signal is fed to the Flash RESET pin.
4.4-10 700/800 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.4.6.2 Audio and Power Section Two main ICs reside in the audio and power section of the schematic diagram: • the MAKO IC (U701) • the VSW1 Driver IC (Q702) 4.4.6.2.1 MAKO IC (U701) The MAKO IC is a mixed-signal IC that provides control, clock generation, digital support, audio, and voltage regulation functionality.
700/800 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.4-11 4.4.6.2.1.3 Audio Circuitry A16-bit CODEC is integrated into the MAKO IC and programmable by the dual-core processor through the SPI bus. The CODEC converts microphone audio data into a digital bit stream for processor by the DSP and converts receive audio data that was processed by the DSP into an analog audio signal for amplification to a speaker.
4.4-12 700/800 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.4.6.3 Interface Support Section The interface support section includes the following: • the MAKO IC (U701) • the ESD protection circuitry, and • the universal connector interface circuitry. 4.4.6.3.1 MAKO IC U701 The digital-support functions are performed by the MAKO IC.
700/800 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.4-13 These new accessories are to ground, designator R666, of the side connector. When this occurs, the ONE_WIRE_OPT is asserted and the dual-core processor detects the change. The dual-core processor then sends a command through the SPI lines to the U701 MAKO IC to connect the side connector One-Wire line to the dual-core processor One-Wire bus.
4.4-14 700/800 MHz Detailed Theories of Operation: VOCON Functional Blocks Most of the signals are extensions of circuits described in other areas of this manual. However, there are two option select pins used to configure special modes: Option Select 1 and Option Select 2. These pins are controlled by accessories connected to the universal connector.
700/800 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.4-15 Table 4.4-1. Option Select Functions FUNCTION Option Select 1 Option Select 2 External Speaker 4.4.6.3.4 The Option Board The Option Board consists of the "keypad module" and the "display module" for models II and III of the XTS 2500/XTS 2500 radio.
4.4-16 700/800 MHz Detailed Theories of Operation: VOCON Functional Blocks The Patriot determines a key press by a scanning algorithm. Each column line is configured as an open drain output and pulled low. The Patriot then scans the row pins (each row pin has an internal pull up resistor).
700/800 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.4-19 ABACUS III MAKO IC U701 U401 CODEC Digital 16-Bit LPF = 3.4kHz G1 Digital Gain = 0 or RX_SSI_FSYNC 1 dB RX_SSI_CLK RX_SSI_DATA Patriot SAP/BBP Preamp = CODEC_RX Patriot SPIB Attenuator 0 to 10 CODEC_DCLK...
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4.4-20 700/800 MHz Detailed Theories of Operation: VOCON Functional Blocks Notes August 16, 2007 6816985H01-B...
This detailed theory of operation can help isolate the problem to a particular component. This manual is to be used in conjunction with the ASTRO XTS 2500, XTS 2500 , XTS 2250, XTS 1500, MT 1500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
4.5-2 900 MHz Detailed Theories of Operation: Antenna Switch • A balance attenuator to balance the high-frequency analog modulation to the low-frequency digital modulation • A 13V positive voltage multiplier • A serial interface for control • A filter for the regulated 5 and 3 volts The 13V, being generated by the positive voltage multiplier circuitry, should be present at pin A2 of U201.
900 MHz Detailed Theories of Operation: Receiver 4.5-3 4.5.4 Receiver The receiver consists of the following: • Front end • Back end 4.5.4.1 Front End For the purposes of this discussion, the receiver front end is defined as being the circuitry from the antenna switch to the output of the IF crystal filter.
4.5-4 900 MHz Detailed Theories of Operation: Transmitter 4.5.4.2 Back End In the ABACUS IC (U401), the first IF frequency is amplified and then down-converted to the second IF frequency (2.25 MHz). At this point, the analog signal is converted into two digital bit streams by a sigma-delta A/D converter.
900 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.5-5 U102 senses the temperature of the printed circuit board (PCB) near the N-Channel MOSFET final (Q101) and provides a DC level representative of this temperature to pin 30 of the PCIC. The PCIC uses this input to cut back the output power level after a certain temperature threshold is reached.
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4.5-6 900 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.5.6.1.1.1 Microcontroller Unit (MCU) The MCU portion of the Patriot has 22.5Kx32 bits of internal RAM and 1Kx32 bits of internal ROM. The internal ROM is used for the bootstrapping code. The MCU has several peripherals, including the following: •...
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900 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.5-7 One-Wire Interface The MCU has a One-Wire Interface module that is used to communicate to a One-Wire device like a USB cable or a smart battery using the Dallas Semiconductor protocol. This module has one external pin, OWIRE_DAT (U800 pin F6), and it uses the GPIO voltage logic level.
4.5-8 900 MHz Detailed Theories of Operation: VOCON Functional Blocks Universal Serial Bus (USB) The Patriot's USB peripheral, shared by the MCU and the DSP, provides the required buffering and protocol to communicate on the Universal Serial Bus. The Patriot supports USB slave functionality. •...
900 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.5-9 The RESET_OUT of the Patriot IC (U800) is at the GPIO voltage logic level (see section 4.5.6.1.1.). Components CR800 and R812 are used to convert the voltage down to a 1.8-volt logic level, and this 1.8 volt reset signal is fed to the Flash RESET pin.
4.5-10 900 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.5.6.2 Audio and Power Section Two main ICs reside in the audio and power section of the schematic diagram: • the MAKO IC (U701) • the VSW1 Driver IC (Q702) 4.5.6.2.1 MAKO IC (U701) The MAKO IC is a mixed-signal IC that provides control, clock generation, digital support, audio, and voltage regulation functionality.
900 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.5-11 4.5.6.2.1.3 Audio Circuitry A16-bit CODEC is integrated into the MAKO IC and programmable by the dual-core processor through the SPI bus. The CODEC converts microphone audio data into a digital bit stream for processor by the DSP and converts receive audio data that was processed by the DSP into an analog audio signal for amplification to a speaker.
4.5-12 900 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.5.6.3.1 MAKO IC U701 The digital-support functions are performed by the MAKO IC. The MAKO IC is contained in a 176-pin BGA with 0.8mm pitch solder balls. The MAKO IC is supplied with three clocks. It is supplied with a 16.8 MHz clock from the transceiver board.
900 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.5-13 4.5.6.3.1.4 Watchdog Timer The watchdog timer is a 125ms counter that is integrated into the MAKO IC U701 and used during the power down sequence. The MAKO IC will begin the power down sequence when a low-to-high transition occurs on MECH_SW pin (MAKO pin E4).
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900 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.5-15 4.5.6.3.4.1 Display Module An optional integral 96 pixels by 64 pixels LCD display module is available with either a 3 x 2 keypad with a navigational button (Model II radios), or 3 x 6 keypad with a navigational button (Model III radios).
4.5-16 900 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.5.6.3.5 Encryption Module The encryption module (secure models only) connects directly to the VOCON board and interfaces directly with the vocoder digital circuitry. It contains one custom microcontroller IC (Armour) to perform digital, numerical, encryption algorithms.
900 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.5-17 4.5.6.3.6 System Clocks The Patriot is supplied with two clocks: 1. The first clock, a 16.8 MHz sine wave, comes from the RF portion of the radio. It is conditioned by the clock buffer circuit, which includes Q709, R722, R740, R743, R729, R797, C726, C725 and C727.
4.5-18 900 MHz Detailed Theories of Operation: VOCON Functional Blocks 4.5.6.5 Receive Audio Path Refer to Figure 4.5-5. The receive audio data comes from the Abacus III IC U401 (DOUTA) to the dual-core processor SRDB pin. The DSP decodes the data and sends it out through the CODEC_RX line to the MAKO IC VC_RX3V pin.
Chapter 5 Troubleshooting Procedures Introduction The purpose of this chapter is to aid in troubleshooting problems with the ASTRO XTS 2500/ XTS 2500 digital portable radio. It is intended to have enough detail to localize the malfunctioning circuit and isolate the defective component.
Troubleshooting Procedures: Standard Bias Table In most situations, the problem circuit may be identified using a multimeter, RF millivoltmeter, oscilloscope (preferably with 100 MHz bandwidth or more), and a spectrum analyzer. When checking a transistor or module, either in or out of circuit, do not use an ohmmeter having more than 1.5 volts dc appearing across the test leads, or use an ohms scale of less than x100.
Troubleshooting Procedures: Power-Up Self-Check Errors Power-Up Self-Check Errors Each time the radio is turned on, the microcontroller unit (MCU) and the digital signal processor (DSP) perform some internal diagnostics. These diagnostics consist of checking the programmable devices such as the FLASH ROMs, internal and external EEPROMs, and SRAM devices. At the end of the power-up self-check routines, if an error exists, the appropriate error codes may be read using the Customer Programming Software (CPS) from the RS232/USB bus on the universal (side) connector.
Troubleshooting Procedures: Operational Error Codes Operational Error Codes During radio operation, the radio performs dynamic tests to determine if the radio is working properly. Problems detected during these tests are presented as error codes on the radio’s display. The presence of an error code should prompt a user that a problem exists and that a service technician should be contacted.
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Troubleshooting Procedures: Operational Error Codes Table 5-4. Additional Error Code Action Items (Continued) Error Code Corrective Action 02/88 Cycle power to the radio. If this does not fix the problem, then the radio should be sent to the depot for re-flashing of the DSP code. Continued failure requires examination and/or replacement of the SRAM (U804).
It is advisable to refer to the related detailed circuit descriptions in the theory sections prior to troubleshooting a radio. This manual is to be used in conjunction with the ASTRO XTS 2500/XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
6.1-2 VHF Troubleshooting Charts: VHF Radio Main Troubleshooting Chart 6.1.3 VHF Radio Main Troubleshooting Chart Start Good Error Display power-up Message? Model? Self-Test? Go to * See Power-up Use RSS to Is there Self Check display Error TX Power? Chart Error Codes Messages Is TX...
VHF Troubleshooting Charts: Radio Power-Up Fail Troubleshooting Chart (1 of 3) 6.1-3 6.1.4 Radio Power-Up Fail Troubleshooting Chart (1 of 3) Power-Up Radio Failure Verify Standard Bias in Table 5-1 Isolate and Repair Problem Standard See DC Supply Bias OK? Failure Flowchart Y es Probe...
6.1-4 VHF Troubleshooting Charts: Radio Power-Up Fail Troubleshooting Chart (2 of 3) 6.1.5 Radio Power-Up Fail Troubleshooting Chart (2 of 3) Probe 16.8MHz Signal at C214 Investigate Signal 16.8 MHz About Reference 1Vp-p? Oscillator Y es Check 16.8MHz Signal at C245 Investigate Clock Signal Buffer...
VHF Troubleshooting Charts: Radio Power-Up Fail Troubleshooting Chart (3 of 3) 6.1-5 6.1.6 Radio Power-Up Fail Troubleshooting Chart (3 of 3) Replace Problem Components Component Check for 32.768kHz signal on R747 Y es Signal Signal Replace U712 Present? Present? and Retest Y es Follow DC Problem...
6.1-6 VHF Troubleshooting Charts: DC Supply Fail Troubleshooting Chart (1 of 3) 6.1.7 DC Supply Fail Troubleshooting Chart (1 of 3) Problem with DC Supply Distribution Network Replace Check Voltage Voltage Approx U701 at L703 1.875V? Y es Y es Check Voltage at R718 Voltage approx...
VHF Troubleshooting Charts: DC Supply Fail Troubleshooting Chart (2 of 3) 6.1-7 6.1.8 DC Supply Fail Troubleshooting Chart (2 of 3) Check Voltage at pin R711 Check Y es Voltage = Components C796, C713, 3.6V +/- L701 Y es Check Replace Voltage at Problem...
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6.1-8 VHF Troubleshooting Charts: DC Supply Fail Troubleshooting Chart (3 of 3) 6.1.9 DC Supply Fail Troubleshooting Chart (3 of 3) Check Voltage at C517 Check L502, Replace Voltage = C518, C506, Components Problem 3.0V +/- 5%? and C512 Component Y es Y es Check...
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VHF Troubleshooting Charts: Button Test Troubleshooting Chart 6.1-9 6.1.10Button Test Troubleshooting Chart Synopsis Button Test This chart relates to a failure in the button functions. Basic Failure modes are as follows: 1) Failure in keypad flex assembly. 2) Bad Connection 3) Defective Switches or pads Place radio in Test Mode.
6.1-10 VHF Troubleshooting Charts: Volume Set Error Troubleshooting Chart 6.1.11 Volume Set Error Troubleshooting Chart Volume Set Error Synopsis This chart relates to a failure in the volume Verify operation set knob. Basic failure modes are as follows: of volume knob 1) Bad connection per "Button Test"...
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VHF Troubleshooting Charts: Zone/Channel Select Error Troubleshooting Chart 6.1-11 6.1.12Zone/Channel Select Error Troubleshooting Chart Channel Select Error RTA1 Channel RTA3 RTA2 RTA0 (R515) Probe Point (R513) (R514) (R516) Verify operation of zone knob per "Button Test" flow chart By studying the adjacent chart against the channel numbers which have errors,...
6.1-12 VHF Troubleshooting Charts: Top/Side Button Error Troubleshooting Chart 6.1.13Top/Side Button Error Troubleshooting Chart Top/Side Button Test Synopsis This chart relates to a failure in Verify operation reading the buttons. Side Button 1, of zone knob per Side Button 2, or Side Button 3. "Button Test"...
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6.1-14 VHF Troubleshooting Charts: No Display Troubleshooting Chart (2 of 3) 6.1.15No Display Troubleshooting Chart (2 of 3) Check P_S* at R912 on option board Verify Signal Problem Path Integrity V = 1.85V? Resolved? and correct Check RESET at R647 Verify Signal Problem V = 1.85V?
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VHF Troubleshooting Charts: No Display Troubleshooting Chart (3 of 3) 6.1-15 6.1.16No Display Troubleshooting Chart (3 of 3) Use an Oscilloscope to check for Check Active a low level (0V) pulse occurrence Low Status on during power-on initialization period. both RESET and CS Return radio to Low-...
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6.1-16 VHF Troubleshooting Charts: VHF Receive RF Troubleshooting Chart 6.1.17VHF Receive RF Troubleshooting Chart Bad SINAD No Recovered Audio NOTE: INJECT MODULATED ON CARRIER NOTE: The presence or absense of RF signals is generally not enough FREQUENCY SIGNAL AS REQUIRED. to diagnose sensitivity degradations.
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VHF Troubleshooting Charts: VOCON Receive Audio Troubleshooting Chart 6.1-17 6.1.18VOCON Receive Audio Troubleshooting Chart Bad SINAD Recovered Audio Check Rx SAP port signal Check speaker integrity as per integrity Chapter 7 Replace Replace Connections Connections U701 Speaker Y es Y es Connect an RLN4460 Replace test box (or equivalent)
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6.1-18 VHF Troubleshooting Charts: VHF Frequency Generation Unit Troubleshooting Chart 6.1.19VHF Frequency Generation Unit Troubleshooting Chart FGU NoLO Injection/TX Unlock Is Vdc at Is Vdc Do a continuity D251&D252(RX VCO) at C218 3V? check and refer to D270(Tx VCO) and C211 DC switch chart 0.4<Vdc<12? Is there...
VHF Troubleshooting Charts: VOCON Transmit Audio Troubleshooting Chart (1 of 2) 6.1-19 6.1.20VOCON Transmit Audio Troubleshooting Chart (1 of 2) Radio has no Transmitter Deviation (VOCON Evaluation) Inspect internal Check voltage and external on C754 and microphone C755 contacts Repair Replace Voltage >...
6.1-20 VHF Troubleshooting Charts: VOCON Transmit Audio Troubleshooting Chart (2 of 2) 6.1.21VOCON Transmit Audio Troubleshooting Chart (2 of 2) Check Mic Clock Replace Bias line on present? U701 U701 for DC Voltage Y es Check signal on Replace Voltage = U701 CODEC_FSYNC 5.0V ?
VHF Troubleshooting Charts: No Transmit Deviation Troubleshooting Chart 6.1-21 6.1.22No Transmit Deviation Troubleshooting Chart NOTE: This chart assumes you have gone through No RF TX the VOCON TX Audio Problem Section. Deviation Set the radio to test mode CSQ. Connect the radio to R4005B test box or equivalent and inject a 1 kHz tone mic signal with an amplitude sufficient to provide a 3 kHz deviation out.
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6.1-22 VHF Troubleshooting Charts: VHF Transmitter RF Troubleshooting Chart 6.1.23VHF Transmitter RF Troubleshooting Chart No/Low TX Power Is RF there RF voltage drop TX current input drive at across D170 at connector U101 pin 16 >300mA? J101? >2dBm? >0.5V? Go to Frequency Check C177, C174, Check U102 Generation Unit...
It is advisable to refer to the related detailed circuit descriptions in the theory sections prior to troubleshooting a radio. This manual is to be used in conjunction with the ASTRO XTS 2500/XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
6.2-2 UHF1 Troubleshooting Charts: UHF Range 1 Radio Main Troubleshooting Chart 6.2.3 UHF Range 1 Radio Main Troubleshooting Chart Start Good Error Display power-up Message? Model? Self-Test? Go to * See Power-up Use RSS to Is there Self Check display Error UHF R1 TX RF TX Power? Chart...
UHF1 Troubleshooting Charts: Radio Power-Up Fail Troubleshooting Chart (1 of 3) 6.2-3 6.2.4 Radio Power-Up Fail Troubleshooting Chart (1 of 3) Power-Up Radio Failure Verify Standard Bias in Table 5-1 Isolate and Repair Problem Standard See DC Supply Bias OK? Failure Flowchart Y es Probe...
6.2-4 UHF1 Troubleshooting Charts: Radio Power-Up Fail Troubleshooting Chart (2 of 3) 6.2.5 Radio Power-Up Fail Troubleshooting Chart (2 of 3) Probe 16.8MHz Signal at C214 Investigate Signal 16.8 MHz About Reference 1Vp-p? Oscillator Y es Check 16.8MHz Signal at C245 Investigate Clock Signal Buffer...
UHF1 Troubleshooting Charts: Radio Power-Up Fail Troubleshooting Chart (3 of 3) 6.2-5 6.2.6 Radio Power-Up Fail Troubleshooting Chart (3 of 3) Replace Problem Components Problem Component solved? Check for 32.768kHz signal on R747 Signal Problem Replace U712 and retest Present? Solved? Follow DC Supply Failure Check for 32.768kHz...
6.2-6 UHF1 Troubleshooting Charts: DC Supply Fail Troubleshooting Chart (1 of 3) 6.2.7 DC Supply Fail Troubleshooting Chart (1 of 3) Problem with DC supply distribution network Check voltage VSW1 at R711 Voltage Problem Replace Q702 =3.6V Solved? +/- 5% Check voltage V1.55 at Voltage R718...
UHF1 Troubleshooting Charts: DC Supply Fail Troubleshooting Chart (2 of 3) 6.2-7 6.2.8 DC Supply Fail Troubleshooting Chart (2 of 3) Check voltage VCC5 at Restart from Chart 6.7 L705 Voltage Problems Replace U701 solve? +/- 5% Check voltage at C517 Voltage Check U502 and D513, =3.0V...
6.2-8 UHF1 Troubleshooting Charts: DC Supply Fail Troubleshooting Chart (3 of 3) 6.2.9 DC Supply Fail Troubleshooting Chart (3 of 3) Check voltage ANA_5V at Restart from Chart 6.7 C514 Voltage Problems Replace U500 solve? +/- 5% Check voltage ANA_3V at C516 Voltage Replace U501...
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UHF1 Troubleshooting Charts: Button Test Troubleshooting Chart 6.2-9 6.2.10Button Test Troubleshooting Chart Synopsis Button Test This chart relates to a failure in the button functions. Basic Failure modes are as follows: 1) Failure in keypad flex assembly. 2) Bad Connection 3) Defective Switches or pads Place radio in Test Mode.
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6.2-10 UHF1 Troubleshooting Charts: Volume Set Error Troubleshooting Chart 6.2.11 Volume Set Error Troubleshooting Chart Volume Set Error Synopsis This chart relates to a failure in the volume Verify operation set knob. Basic failure modes are as follows: of volume knob 1) Bad connection per "Button Test"...
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UHF1 Troubleshooting Charts: Zone/Channel Select Error Troubleshooting Chart 6.2-11 6.2.12Zone/Channel Select Error Troubleshooting Chart Channel Select Error RTA1 Channel RTA3 RTA2 RTA0 (R515) Probe Point (R513) (R514) (R516) Verify operation of zone knob per "Button Test" flow chart By studying the adjacent chart against the channel numbers which have errors,...
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6.2-12 UHF1 Troubleshooting Charts: Top/Side Button Error Troubleshooting Chart 6.2.13Top/Side Button Error Troubleshooting Chart Top/Side Button Test Synopsis This chart relates to a failure in Verify operation reading the buttons. Side Button 1, of zone knob per Side Button 2, or Side Button 3. "Button Test"...
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6.2-14 UHF1 Troubleshooting Charts: No Display Troubleshooting Chart (2 of 3) 6.2.15No Display Troubleshooting Chart (2 of 3) Check P_S* at R912 on option board Verify Signal Problem Path Integrity V = 1.85V? Resolved? and correct Check RESET at R647 Verify Signal Problem V = 1.85V?
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UHF1 Troubleshooting Charts: No Display Troubleshooting Chart (3 of 3) 6.2-15 6.2.16No Display Troubleshooting Chart (3 of 3) Use an Oscilloscope to check for Check Active a low level (0V) pulse occurrence Low Status on during power-on initialization period. both RESET and CS Return radio to Low-...
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6.2-16 UHF1 Troubleshooting Charts: UHF Range 1 Receive RF Troubleshooting Chart 6.2.17UHF Range 1 Receive RF Troubleshooting Chart Bad SINAD No Recovered Audio NOTE: INJECT MODULATED ON CARRIER NOTE: The presence or absense of RF signals is generally not enough FREQUENCY SIGNAL AS REQUIRED.
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UHF1 Troubleshooting Charts: VOCON Receive Audio Troubleshooting Chart 6.2-17 6.2.18VOCON Receive Audio Troubleshooting Chart Bad SINAD Recovered Audio Check Rx SAP port signal Check speaker integrity as per integrity Chapter 7 Replace Replace Connections Connections U701 Speaker Y es Y es Connect an RLN4460 Replace test box (or equivalent)
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6.2-18 UHF1 Troubleshooting Charts: UHF Range 1 Frequency Generation Unit Troubleshooting Chart 6.2.19UHF Range 1 Frequency Generation Unit Troubleshooting Chart Do a continuity FGU No LO/ Is Vdc at C218 3V check and refer to TX Unlock and C244 5V? DC switch chart Is Vdc at VC_TP 0.4<Vdc<12?
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UHF1 Troubleshooting Charts: VOCON Transmit Audio Troubleshooting Chart (1 of 2) 6.2-19 6.2.20VOCON Transmit Audio Troubleshooting Chart (1 of 2) Radio has no Transmitter Deviation (VOCON Evaluation) Inspect internal Check voltage and external on C754 and microphone C755 contacts Repair Replace Voltage >...
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6.2-20 UHF1 Troubleshooting Charts: VOCON Transmit Audio Troubleshooting Chart (2 of 2) 6.2.21VOCON Transmit Audio Troubleshooting Chart (2 of 2) Check Mic Clock Replace Bias line on present? U701 U701 for DC Voltage Y es Replace Check signal on Voltage = U701 CODEC_FSYNC 5.0V ?
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UHF1 Troubleshooting Charts: No Transmit Deviation Troubleshooting Chart 6.2-21 6.2.22No Transmit Deviation Troubleshooting Chart NOTE: This chart assumes you have gone through No RF TX the VOCON TX Audio Problem Section. Deviation Set the radio to test mode CSQ. Connect the radio to R4005B test box or equivalent and inject a 1 kHz tone mic signal with an amplitude sufficient to provide a 3 kHz deviation out.
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6.2-22 UHF1 Troubleshooting Charts: UHF Range 1 Transmitter RF Troubleshooting Chart 6.2.23UHF Range 1 Transmitter RF Troubleshooting Chart No/Low TX Power Is RF voltage drop there RF TX current input drive at across D170 at connector U101 pin 16 >300mA? >0.5V? J101? >2dBm?
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UHF1 Troubleshooting Charts: Secure Hardware Failure 6.2-23 6.2.24Secure Hardware Failure Fail 09/10 Failure Secure Hardware 09/10 : Secure Hardware Failure Failure S03 : No communication between VOCON and UCM S02 : UCM tampered. (keypad retainer removed) Verify connections to secure module Synopsis through J601 This failure relates only to secure-equipped...
It is advisable to refer to the related detailed circuit descriptions in the theory sections prior to troubleshooting a radio. This manual is to be used in conjunction with the ASTRO XTS 2500/XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
6.3-2 UHF2 Troubleshooting Charts: UHF Range 2 Radio Main Troubleshooting Chart 6.3.3 UHF Range 2 Radio Main Troubleshooting Chart Start Good Error Display power-up Message? Model? Self-Test? Go to * See Power-up Use RSS to Is there UHF R2 TX RF Self Check display Error TX Power?
UHF2 Troubleshooting Charts: Radio Power-Up Fail Troubleshooting Chart (1 of 3) 6.3-3 6.3.4 Radio Power-Up Fail Troubleshooting Chart (1 of 3) Power-Up Radio Failure Verify Standard Bias in Table 5-1 Isolate and Repair Problem Standard See DC Supply Bias OK? Failure Flowchart Y es Probe...
6.3-4 UHF2 Troubleshooting Charts: Radio Power-Up Fail Troubleshooting Chart (2 of 3) 6.3.5 Radio Power-Up Fail Troubleshooting Chart (2 of 3) Probe 16.8MHz Signal at C214 Investigate Signal 16.8 MHz About Reference 1Vp-p? Oscillator Y es Check 16.8MHz Signal at C245 Investigate Clock Signal Buffer...
UHF2 Troubleshooting Charts: Radio Power-Up Fail Troubleshooting Chart (3 of 3) 6.3-5 6.3.6 Radio Power-Up Fail Troubleshooting Chart (3 of 3) Replace Problem Components Problem Component solved? Check for 32.768kHz signal on R747 Signal Problem Replace U712 and retest Present? Solved? Follow DC Supply Failure Check for 32.768kHz...
6.3-6 UHF2 Troubleshooting Charts: DC Supply Fail Troubleshooting Chart (1 of 3) 6.3.7 DC Supply Fail Troubleshooting Chart (1 of 3) Problem with DC supply distribution network Check voltage VSW1 at R711 Voltage Problem Replace Q702 =3.6V Solved? +/- 5% Check voltage V1.55 at Voltage R718...
UHF2 Troubleshooting Charts: DC Supply Fail Troubleshooting Chart (2 of 3) 6.3-7 6.3.8 DC Supply Fail Troubleshooting Chart (2 of 3) Check voltage VCC5 at Restart from Chart 6.7 L705 Voltage Problems Replace U701 solve? +/- 5% Check voltage at C517 Voltage Check U502 and D513, =3.0V...
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6.3-8 UHF2 Troubleshooting Charts: DC Supply Fail Troubleshooting Chart (3 of 3) 6.3.9 DC Supply Fail Troubleshooting Chart (3 of 3) Check voltage ANA_5V at Restart from Chart 6.7 C514 Voltage Problems Replace U500 solve? +/- 5% Check voltage ANA_3V at C516 Voltage Replace U501...
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UHF2 Troubleshooting Charts: Button Test Troubleshooting Chart 6.3-9 6.3.10Button Test Troubleshooting Chart Synopsis Button Test This chart relates to a failure in the button functions. Basic Failure modes are as follows: 1) Failure in keypad flex assembly. 2) Bad Connection 3) Defective Switches or pads Place radio in Test Mode.
6.3-10 UHF2 Troubleshooting Charts: Volume Set Error Troubleshooting Chart 6.3.11 Volume Set Error Troubleshooting Chart Volume Set Error Synopsis This chart relates to a failure in the volume Verify operation set knob. Basic failure modes are as follows: of volume knob 1) Bad connection per "Button Test"...
UHF2 Troubleshooting Charts: Zone/Channel Select Error Troubleshooting Chart 6.3-11 6.3.12Zone/Channel Select Error Troubleshooting Chart Channel Select Error RTA1 Channel RTA3 RTA2 RTA0 (R515) Probe Point (R513) (R514) (R516) Verify operation of zone knob per "Button Test" flow chart By studying the adjacent chart against the channel numbers which have errors,...
6.3-12 UHF2 Troubleshooting Charts: Top/Side Button Error Troubleshooting Chart 6.3.13Top/Side Button Error Troubleshooting Chart Top/Side Button Test Synopsis This chart relates to a failure in Verify operation reading the buttons. Side Button 1, of zone knob per Side Button 2, or Side Button 3. "Button Test"...
6.3-14 UHF2 Troubleshooting Charts: No Display Troubleshooting Chart (2 of 3) 6.3.15No Display Troubleshooting Chart (2 of 3) Check P_S* at R912 on option board Verify Signal Problem Path Integrity V = 1.85V? Resolved? and correct Check RESET at R647 Verify Signal Problem V = 1.85V?
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UHF2 Troubleshooting Charts: No Display Troubleshooting Chart (3 of 3) 6.3-15 6.3.16No Display Troubleshooting Chart (3 of 3) Use an Oscilloscope to check for Check Active a low level (0V) pulse occurrence Low Status on during power-on initialization period. both RESET and CS Return radio to Low-...
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6.3-16 UHF2 Troubleshooting Charts: UHF Range 2 Receive RF Troubleshooting Chart 6.3.17UHF Range 2 Receive RF Troubleshooting Chart Bad SINAD No Recovered Audio NOTE: INJECT MODULATED ON CARRIER NOTE: The presence or absense of RF signals is generally not enough FREQUENCY SIGNAL AS REQUIRED.
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UHF2 Troubleshooting Charts: VOCON Receive Audio Troubleshooting Chart 6.3-17 6.3.18VOCON Receive Audio Troubleshooting Chart Bad SINAD Recovered Audio Check Rx SAP port signal Check speaker integrity as per integrity Chapter 7 Replace Replace Connections Connections U701 Speaker Y es Y es Connect an RLN4460 Replace test box (or equivalent)
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6.3-18 UHF2 Troubleshooting Charts: UHF Range 2 Frequency Generation Unit Troubleshooting Chart 6.3.19UHF Range 2 Frequency Generation Unit Troubleshooting Chart Do a continuity FGU No LO/ Is Vdc at C218 3V check and refer to TX Unlock and C244 5V? DC switch chart Is Vdc at VC_TP 0.4<Vdc<12?
UHF2 Troubleshooting Charts: VOCON Transmit Audio Troubleshooting Chart (1 of 2) 6.3-19 6.3.20VOCON Transmit Audio Troubleshooting Chart (1 of 2) Radio has no Transmitter Deviation (VOCON Evaluation) Inspect internal Check voltage and external on C754 and microphone C755 contacts Repair Replace Voltage >...
6.3-20 UHF2 Troubleshooting Charts: VOCON Transmit Audio Troubleshooting Chart (2 of 2) 6.3.21VOCON Transmit Audio Troubleshooting Chart (2 of 2) Check Mic Clock Replace Bias line on present? U701 U701 for DC Voltage Y es Replace Check signal on Voltage = CODEC_FSYNC U701 5.0V ?
UHF2 Troubleshooting Charts: No Transmit Deviation Troubleshooting Chart 6.3-21 6.3.22No Transmit Deviation Troubleshooting Chart NOTE: This chart assumes you have gone through No RF TX the VOCON TX Audio Problem Section. Deviation Set the radio to test mode CSQ. Connect the radio to R4005B test box or equivalent and inject a 1 kHz tone mic signal with an amplitude sufficient to provide a 3 kHz deviation out.
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6.3-22 UHF2 Troubleshooting Charts: UHF Range 2 Transmitter RF Troubleshooting Chart 6.3.23UHF Range 2 Transmitter RF Troubleshooting Chart No/Low TX Power Is RF voltage drop there RF TX current input drive at across D170 at connector U101 pin 16 >300mA? >0.5V? J101? >2dBm?
It is advisable to refer to the related detailed circuit descriptions in the theory sections prior to troubleshooting a radio. This manual is to be used in conjunction with the ASTRO XTS 2500/XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
6.4-2 700/800 MHz Troubleshooting Charts: 700/800 MHz Radio Main Troubleshooting Chart 6.4.3 700/800 MHz Radio Main Troubleshooting Chart Start Good Error Display power-up Message? Model? Self-Test? Go to * See Power-up Use RSS to Is there 700/800 MHz Self Check display Error TX Power? TX RF Chart...
700/800 MHz Troubleshooting Charts: Radio Power-Up Fail Troubleshooting Chart (1 of 3) 6.4-3 6.4.4 Radio Power-Up Fail Troubleshooting Chart (1 of 3) Power-Up Radio Failure Verify Standard Bias in Table 5-1 Isolate and Repair Problem Standard See DC Supply Bias OK? Failure Flowchart Y es Probe...
6.4-4 700/800 MHz Troubleshooting Charts: Radio Power-Up Fail Troubleshooting Chart (2 of 3) 6.4.5 Radio Power-Up Fail Troubleshooting Chart (2 of 3) Probe 16.8MHz Signal at C243 Investigate Signal 16.8 MHz About Reference 1Vp-p? Oscillator Y es Check 16.8MHz Signal at C293 Investigate Clock Signal Buffer...
700/800 MHz Troubleshooting Charts: Radio Power-Up Fail Troubleshooting Chart (3 of 3) 6.4-5 6.4.6 Radio Power-Up Fail Troubleshooting Chart (3 of 3) Replace Problem Components Component Check for 32.768kHz signal on R747 Y es Signal Signal Replace U712 Present? Present? and Retest Y es Follow DC...
6.4-6 700/800 MHz Troubleshooting Charts: DC Supply Fail Troubleshooting Chart (1 of 3) 6.4.7 DC Supply Fail Troubleshooting Chart (1 of 3) Problem with DC Supply Distribution Network Replace Check Voltage Voltage Approx U701 at L703 1.875V? Y es Y es Check Voltage at R718 Voltage approx...
700/800 MHz Troubleshooting Charts: DC Supply Fail Troubleshooting Chart (2 of 3) 6.4-7 6.4.8 DC Supply Fail Troubleshooting Chart (2 of 3) Check Voltage at pin R711 Check Y es Voltage = Components C796, C713, 3.6V +/- L701 Y es Check Replace Voltage at...
6.4-8 700/800 MHz Troubleshooting Charts: DC Supply Fail Troubleshooting Chart (3 of 3) 6.4.9 DC Supply Fail Troubleshooting Chart (3 of 3) Check Voltage at C517 Check R595, Replace Voltage = L511, C518, Components Problem 3.0V +/- 5%? and C560 Component Y es Y es...
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700/800 MHz Troubleshooting Charts: Button Test Troubleshooting Chart 6.4-9 6.4.10Button Test Troubleshooting Chart Synopsis Button Test This chart relates to a failure in the button functions. Basic Failure modes are as follows: 1) Failure in keypad flex assembly. 2) Bad Connection 3) Defective Switches or pads Place radio in Test Mode.
6.4-10 700/800 MHz Troubleshooting Charts: Volume Set Error Troubleshooting Chart 6.4.11 Volume Set Error Troubleshooting Chart Volume Set Error Synopsis This chart relates to a failure in the volume Verify operation set knob. Basic failure modes are as follows: of volume knob 1) Bad connection per "Button Test"...
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700/800 MHz Troubleshooting Charts: Zone/Channel Select Error Troubleshooting Chart 6.4-11 6.4.12Zone/Channel Select Error Troubleshooting Chart Channel Select Error Channel RTA3 RTA2 RTA1 RTA0 (R515) Probe Point (R513) (R514) (R516) Verify operation of zone knob per "Button Test" flow chart By studying the adjacent chart against the channel numbers which have errors,...
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6.4-12 700/800 MHz Troubleshooting Charts: Top/Side Button Error Troubleshooting Chart 6.4.13Top/Side Button Error Troubleshooting Chart Top/Side Button Test Synopsis This chart relates to a failure in Verify operation reading the buttons. Side Button 1, of zone knob per Side Button 2, or Side Button 3. "Button Test"...
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6.4-14 700/800 MHz Troubleshooting Charts: No Display Troubleshooting Chart (2 of 3) 6.4.15No Display Troubleshooting Chart (2 of 3) Check P_S* at R912 on option board Verify Signal Problem Path Integrity V = 1.85V? Resolved? and correct Check RESET at R647 Verify Signal Problem V = 1.85V?
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700/800 MHz Troubleshooting Charts: No Display Troubleshooting Chart (3 of 3) 6.4-15 6.4.16No Display Troubleshooting Chart (3 of 3) Use an Oscilloscope to check for Check Active a low level (0V) pulse occurrence Low Status on during power-on initialization period. both RESET and CS Return radio to...
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6.4-16 700/800 MHz Troubleshooting Charts: 700/800 MHz Receive RF Troubleshooting Chart 6.4.17700/800 MHz Receive RF Troubleshooting Chart Bad SINAD No Recovered Audio NOTE: INJECT MODULATED ON CARRIER NOTE: The presence or absense of RF signals is generally not enough FREQUENCY SIGNAL AS REQUIRED. to diagnose sensitivity degradations.
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700/800 MHz Troubleshooting Charts: VOCON Receive Audio Troubleshooting Chart 6.4-17 6.4.18VOCON Receive Audio Troubleshooting Chart Bad SINAD Recovered Audio Check Rx SAP port signal Check speaker integrity as per integrity Chapter 7 Replace Replace Connections Connections U701 Speaker Y es Y es Connect an RLN4460 Replace...
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6.4-18 700/800 MHz Troubleshooting Charts: 700/800 MHz Frequency Generation Unit Troubleshooting Chart 6.4.19700/800 MHz Frequency Generation Unit Troubleshooting Chart FGU NoLO Injection/TX Unlock Is Vdc at Is Vdc Do a continuity D251&D252(RX VCO) at C218 3V? check and refer to D270(Tx VCO) and C211 DC switch chart...
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700/800 MHz Troubleshooting Charts: VOCON Transmit Audio Troubleshooting Chart (1 of 2) 6.4-19 6.4.20VOCON Transmit Audio Troubleshooting Chart (1 of 2) Radio has no Transmitter Deviation (VOCON Evaluation) Inspect internal Check voltage and external on C754 and microphone C755 contacts Repair Replace Voltage >...
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6.4-20 700/800 MHz Troubleshooting Charts: VOCON Transmit Audio Troubleshooting Chart (2 of 2) 6.4.21VOCON Transmit Audio Troubleshooting Chart (2 of 2) Check Mic Clock Replace Bias line on present? U701 U701 for DC Voltage Y es Check signal on Replace Voltage = U701 CODEC_FSYNC...
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700/800 MHz Troubleshooting Charts: No Transmit Deviation Troubleshooting Chart 6.4-21 6.4.22No Transmit Deviation Troubleshooting Chart NOTE: This chart assumes you have gone through No RF TX the VOCON TX Audio Problem Section. Deviation Set the radio to test mode CSQ. Connect the radio to R4005B test box or equivalent and inject a 1 kHz tone mic signal with an amplitude sufficient...
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6.4-22 700/800 MHz Troubleshooting Charts: 700/800 MHz Transmitter RF Troubleshooting Chart 6.4.23700/800 MHz Transmitter RF Troubleshooting Chart No/Low TX Power Is RF Is there there RF voltage drop TX current input drive at continuity across across CR101 at connector U101 pin 16 >300mA? U106? J101?
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700/800 MHz Troubleshooting Charts: Secure Hardware Failure 6.4-23 6.4.24Secure Hardware Failure Fail 09/10 Failure Secure Hardware 09/10 : Secure Hardware Failure Failure S03 : No communication between VOCON and UCM S02 : UCM tampered. (keypad retainer removed) Verify connections to secure module Synopsis through J601 This failure relates only to secure-equipped...
It is advisable to refer to the related detailed circuit descriptions in the theory sections prior to troubleshooting a radio. This manual is to be used in conjunction with the ASTRO XTS 2500/XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
6.5-2 900 MHz Troubleshooting Charts: 900 MHz Radio Main Troubleshooting Chart 6.5.3 900 MHz Radio Main Troubleshooting Chart Start Good Error Display power-up Message? Model? Self-Test? Go to * See Power-up Use RSS to Is there 900 MHz Self Check display Error TX Power? TX RF Chart...
900 MHz Troubleshooting Charts: Radio Power-Up Fail Troubleshooting Chart (1 of 3) 6.5-3 6.5.4 Radio Power-Up Fail Troubleshooting Chart (1 of 3) Power-Up Radio Failure Verify Standard Bias in Table 5-1 Isolate and Repair Problem Standard See DC Supply Bias OK? Failure Flowchart Y es Probe...
6.5-4 900 MHz Troubleshooting Charts: Radio Power-Up Fail Troubleshooting Chart (2 of 3) 6.5.5 Radio Power-Up Fail Troubleshooting Chart (2 of 3) Probe 16.8MHz Signal at C243 Investigate Signal 16.8 MHz About Reference 1Vp-p? Oscillator Y es Check 16.8MHz Signal at C293 Investigate Clock Signal Buffer...
900 MHz Troubleshooting Charts: Radio Power-Up Fail Troubleshooting Chart (3 of 3) 6.5-5 6.5.6 Radio Power-Up Fail Troubleshooting Chart (3 of 3) Replace Problem Components Component Check for 32.768kHz signal on R747 Y es Signal Signal Replace U712 Present? Present? and Retest Y es Follow DC...
6.5-6 900 MHz Troubleshooting Charts: DC Supply Fail Troubleshooting Chart (1 of 3) 6.5.7 DC Supply Fail Troubleshooting Chart (1 of 3) Problem with DC Supply Distribution Network Replace Check Voltage Voltage Approx U701 at L703 1.875V? Y es Y es Check Voltage at R718 Voltage approx...
900 MHz Troubleshooting Charts: DC Supply Fail Troubleshooting Chart (2 of 3) 6.5-7 6.5.8 DC Supply Fail Troubleshooting Chart (2 of 3) Check Voltage at pin R711 Check Y es Voltage = Components C796, C713, 3.6V +/- L701 Y es Check Replace Voltage at...
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6.5-8 900 MHz Troubleshooting Charts: DC Supply Fail Troubleshooting Chart (3 of 3) 6.5.9 DC Supply Fail Troubleshooting Chart (3 of 3) Check Voltage at C517 Check R595, Replace Voltage = L511, C518, Components Problem 3.0V +/- 5%? and C560 Component Y es Y es...
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900 MHz Troubleshooting Charts: Button Test Troubleshooting Chart 6.5-9 6.5.10Button Test Troubleshooting Chart Synopsis Button Test This chart relates to a failure in the button functions. Basic Failure modes are as follows: 1) Failure in keypad flex assembly. 2) Bad Connection 3) Defective Switches or pads Place radio in Test Mode.
6.5-10 900 MHz Troubleshooting Charts: Volume Set Error Troubleshooting Chart 6.5.11 Volume Set Error Troubleshooting Chart Volume Set Error Synopsis This chart relates to a failure in the volume Verify operation set knob. Basic failure modes are as follows: of volume knob 1) Bad connection per "Button Test"...
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900 MHz Troubleshooting Charts: Zone/Channel Select Error Troubleshooting Chart 6.5-11 6.5.12Zone/Channel Select Error Troubleshooting Chart Channel Select Error Channel RTA3 RTA2 RTA1 RTA0 (R515) Probe Point (R513) (R514) (R516) Verify operation of zone knob per "Button Test" flow chart By studying the adjacent chart against the channel numbers which have errors,...
6.5-12 900 MHz Troubleshooting Charts: Top/Side Button Error Troubleshooting Chart 6.5.13Top/Side Button Error Troubleshooting Chart Top/Side Button Test Synopsis This chart relates to a failure in Verify operation reading the buttons. Side Button 1, of zone knob per Side Button 2, or Side Button 3. "Button Test"...
6.5-14 900 MHz Troubleshooting Charts: No Display Troubleshooting Chart (2 of 3) 6.5.15No Display Troubleshooting Chart (2 of 3) Check P_S* at R912 on option board Verify Signal Problem Path Integrity V = 1.85V? Resolved? and correct Check RESET at R647 Verify Signal Problem V = 1.85V?
900 MHz Troubleshooting Charts: No Display Troubleshooting Chart (3 of 3) 6.5-15 6.5.16No Display Troubleshooting Chart (3 of 3) Use an Oscilloscope to check for Check Active a low level (0V) pulse occurrence Low Status on during power-on initialization period. both RESET and CS Return radio to...
6.5-16 900 MHz Troubleshooting Charts: 900 MHz Receive RF Troubleshooting Chart 6.5.17900 MHz Receive RF Troubleshooting Chart Bad SINAD No Recovered Audio NOTE: INJECT MODULATED ON CARRIER NOTE: The presence or absense of RF signals is generally not enough FREQUENCY SIGNAL AS REQUIRED. to diagnose sensitivity degradations.
900 MHz Troubleshooting Charts: VOCON Receive Audio Troubleshooting Chart 6.5-17 6.5.18VOCON Receive Audio Troubleshooting Chart ud o oub es oo g C a ( o Radio has no Transmitter Deviation (VOCON Evaluation) Inspect internal Check voltage and external on C754 and microphone C755 contacts...
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6.5-18 900 MHz Troubleshooting Charts: 900 MHz Frequency Generation Unit Troubleshooting Chart 6.5.19900 MHz Frequency Generation Unit Troubleshooting Chart FGU NoLO Injection/TX Unlock Is Vdc at Is Vdc Do a continuity D212(RX VCO) at C217 3V? check and refer to D211(Tx VCO) and C201 DC switch chart...
900 MHz Troubleshooting Charts: VOCON Transmit Audio Troubleshooting Chart (1 of 2) 6.5-19 6.5.20VOCON Transmit Audio Troubleshooting Chart (1 of 2) Radio has no Transmitter Deviation (VOCON Evaluation) Inspect internal Check voltage and external on C754 and microphone C755 contacts Repair Replace Voltage >...
6.5-20 900 MHz Troubleshooting Charts: VOCON Transmit Audio Troubleshooting Chart (2 of 2) 6.5.21VOCON Transmit Audio Troubleshooting Chart (2 of 2) Check Mic Clock Replace Bias line on present? U701 U701 for DC Voltage Y es Check signal on Replace Voltage = U701 CODEC_FSYNC...
900 MHz Troubleshooting Charts: No Transmit Deviation Troubleshooting Chart 6.5-21 6.5.22No Transmit Deviation Troubleshooting Chart NOTE: This chart assumes you have gone through No RF TX the VOCON TX Audio Problem Section. Deviation Set the radio to test mode CSQ. Connect the radio to R4005B test box or equivalent and inject a 1 kHz tone mic signal with an amplitude sufficient...
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6.5-22 900 MHz Troubleshooting Charts: 900MHz Transmitter RF Troubleshooting Chart 6.5.23900MHz Transmitter RF Troubleshooting Chart No/Low TX Power Is RF Is there voltage drop there RF TX current input drive at continuity across across CR101 at connector U101 pin 16 >300mA? U106? J101?
This chapter contains images of waveforms that might be useful in verifying operation of certain parts of the circuitry. These waveforms are for reference only; the actual data depicted will vary depending upon operating conditions. This manual is to be used in conjunction with the ASTRO XTS 2500/ XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
7.1-2 VHF Troubleshooting Waveforms: RF Test Points 7.1.3 RF Test Points The following RF block diagram and accompanying table (Table 7.1-2) shows the location of key probe points (PP) and test points (TP) for the XTS 2500/XTS 2500 radio. Legend Coupler PCIC Detector...
The probe should be placed in center of the hole located on the top of the shield. Make sure the probe does not touch the shield or any other components. 7.1.4 Main Circuit Board RF Shield Locations Viewed from Side 1 Table 7.1-3. Main Circuit Board Side 1 RF Shields Item Reference Motorola Part Description Number Number Number SH51 2686700Z02...
VHF Troubleshooting Waveforms: Main Circuit Board RF Shield Locations 7.1-5 Viewed from Side 2 Table 7.1-4. Main Circuit Board Side 2 RF Shields Item Reference Motorola Part Description Number Number Number SH401 2686706Z02 Shield, ABACUS SH201 2686705Z02 Shield, Synthesizer SH103...
VHF Troubleshooting Waveforms: PP2 TX Signal at Harmonic Filter Input 7.1-7 7.1.6 PP2 TX Signal at Harmonic Filter Input Probe point: C180 (located under shield). 6816985H01-B August 16, 2007...
7.1-20 VHF Troubleshooting Waveforms: PP17 Frequency Out (16.8 MHz) 7.1.19PP17 Frequency Out (16.8 MHz) Probe point: 16out (Test Point). August 16, 2007 6816985H01-B...
VHF Troubleshooting Waveforms: PP20 Preselector Tuning Voltage 7.1-23 7.1.22PP20 Preselector Tuning Voltage Probe point: C15 and C46. This is a typical value when tuned to receive at 136.075MHz. 6816985H01-B August 16, 2007...
VHF Troubleshooting Waveforms: PP29 2nd LO Control Voltage 7.1-31 7.1.30PP29 2nd LO Control Voltage Probe point: U401, pin 38 (located under shield). 6816985H01-B August 16, 2007...
Page 322
7.1-38 VHF Troubleshooting Waveforms: SPI B Data 7.1.37SPI B Data Trace 1: MAKO chip enable, R767 (not active high) Trace 2: SPI data clock, C619 Trace 3: SPI data to MAKO, C617. August 16, 2007 6816985H01-B...
Page 323
VHF Troubleshooting Waveforms: RX Serial Audio Port (SAP) 7.1-39 7.1.38RX Serial Audio Port (SAP) Note: TX is identical, except the data is probed at test point “TX”. Trace 1: 8 kHz frame sync (each word is 13 bits after falling edge of FSYNC) Trace 2: SAP data at R626 (audio data from MAKO CODEC to Patriot DSP) Note: Transmit is identical, except data acquired at R625 Trace 3: 512kHz bit clock at R616.
Page 324
7.1-40 VHF Troubleshooting Waveforms: PP33 SPI Data 7.1.39PP33 SPI Data Probe Point: R802. August 16, 2007 6816985H01-B...
This chapter contains images of waveforms that might be useful in verifying operation of certain parts of the circuitry. These waveforms are for reference only; the actual data depicted will vary depending upon operating conditions. This manual is to be used in conjunction with the ASTRO XTS 2500/ XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
7.2-2 UHF1 Troubleshooting Waveforms: RF Test Points 7.2.3 RF Test Points The following RF block diagram and accompanying table (Table 7.2-2) shows the location of key probe points (PP) and test points (TP) for the XTS 2500/XTS 2500 radio. Legend Coupler PCIC Detector...
The probe should be placed in center of the hole located on the top of the shield. Make sure the probe does not touch the shield or any other components. 7.2.4 Main Circuit Board RF Shield Locations Viewed from Side 1 Table 7.2-3. Main Circuit Board Side 1 RF Shields Item Reference Motorola Part Description Number Number Number SH51 2686700Z02...
UHF1 Troubleshooting Waveforms: Main Circuit Board RF Shield Locations 7.2-5 Viewed from Side 2 Table 7.2-4. Main Circuit Board Side 2 RF Shields Item Reference Motorola Part Description Number Number Number SH401 2686706Z02 Shield, ABACUS SH201 2686705Z02 Shield, Synthesizer SH103...
UHF1 Troubleshooting Waveforms: PP2 TX Signal at Harmonic Filter Input 7.2-7 7.2.6 PP2 TX Signal at Harmonic Filter Input Probe point: C180 (located under shield). 6816985H01-B August 16, 2007...
UHF1 Troubleshooting Waveforms: PP17 Frequency Out (19.2 MHz) 7.2-21 7.2.19PP17 Frequency Out (19.2 MHz) Probe point: 16out (Test Point). 6816985H01-B August 16, 2007...
Page 352
7.2-22 UHF1 Troubleshooting Waveforms: PP18 RX RF Input at Antenna Switch 7.2.20PP18 RX RF Input at Antenna Switch Probe point: C1. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. August 16, 2007 6816985H01-B...
Page 354
7.2-24 UHF1 Troubleshooting Waveforms: PP20 Preselector Tuning Voltage 7.2.22PP20 Preselector Tuning Voltage Probe point: C15 and C46. This is a typical value when tuned to receive at 136.075MHz. August 16, 2007 6816985H01-B...
Page 355
UHF1 Troubleshooting Waveforms: PP22 Analog 5V 7.2-25 7.2.23PP22 Analog 5V Probe point: U500, pin 5. 6816985H01-B August 16, 2007...
Page 356
7.2-26 UHF1 Troubleshooting Waveforms: PP23 Preselector 1 Output 7.2.24PP23 Preselector 1 Output Probe point: C1. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. August 16, 2007 6816985H01-B...
Page 357
UHF1 Troubleshooting Waveforms: PP24 Low-Noise Amplifier Output 7.2-27 7.2.25PP24 Low-Noise Amplifier Output Probe point: C35. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. 6816985H01-B August 16, 2007...
Page 358
7.2-28 UHF1 Troubleshooting Waveforms: PP25 Preselector 2 Output 7.2.26PP25 Preselector 2 Output Probe point: C47. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. August 16, 2007 6816985H01-B...
UHF1 Troubleshooting Waveforms: PP26 Mixer Out (IF) 7.2-29 7.2.27PP26 Mixer Out (IF) Probe point: C68. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. 6816985H01-B August 16, 2007...
Page 360
7.2-30 UHF1 Troubleshooting Waveforms: PP27 Crystal Filter Out 7.2.28PP27 Crystal Filter Out Probe point: L56. August 16, 2007 6816985H01-B...
Page 361
UHF1 Troubleshooting Waveforms: PP28 Abacus Analog 3V 7.2-31 7.2.29PP28 Abacus Analog 3V Probe point: U501, pin 5. 6816985H01-B August 16, 2007...
Page 362
7.2-32 UHF1 Troubleshooting Waveforms: PP29 2nd LO Control Voltage 7.2.30PP29 2nd LO Control Voltage Probe point: U401, pin 38 (located under shield). August 16, 2007 6816985H01-B...
Page 363
UHF1 Troubleshooting Waveforms: PP30 2nd LO VCO Buffer Output 7.2-33 7.2.31PP30 2nd LO VCO Buffer Output Probe point: C433. 6816985H01-B August 16, 2007...
Page 369
UHF1 Troubleshooting Waveforms: SPI B Data 7.2-39 7.2.37SPI B Data Trace 1: MAKO chip enable, R767 (not active high) Trace 2: SPI data clock, C619 Trace 3: SPI data to MAKO, C617. 6816985H01-B August 16, 2007...
Page 370
7.2-40 UHF1 Troubleshooting Waveforms: RX Serial Audio Port (SAP) 7.2.38RX Serial Audio Port (SAP) Note: TX is identical, except the data is probed at test point “TX”. Trace 1: 8 kHz frame sync (each word is 13 bits after falling edge of FSYNC) Trace 2: SAP data at R626 (audio data from MAKO CODEC to Patriot DSP) Note: Transmit is identical, except data acquired at R625 Trace 3: 512kHz bit clock at R616.
Page 371
UHF1 Troubleshooting Waveforms: PP33 SPI Data 7.2-41 7.2.39PP33 SPI Data Probe Point: R802. 6816985H01-B August 16, 2007...
This chapter contains images of waveforms that might be useful in verifying operation of certain parts of the circuitry. These waveforms are for reference only; the actual data depicted will vary depending upon operating conditions. This manual is to be used in conjunction with the ASTRO XTS 2500/ XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
7.3-2 UHF2 Troubleshooting Waveforms: RF Test Points 7.3.3 RF Test Points The following RF block diagram and accompanying table (Table 7.3-2) shows the location of key probe points (PP) and test points (TP) for the XTS 2500/XTS 2500 radio. Legend Coupler PCIC Detector...
The probe should be placed in center of the hole located on the top of the shield. Make sure the probe does not touch the shield or any other components. 7.3.4 Main Circuit Board RF Shield Locations Viewed from Side 1 Table 7.3-3. Main Circuit Board Side 1 RF Shields Item Reference Motorola Part Description Number Number Number SH51 2686700Z02...
UHF2 Troubleshooting Waveforms: Main Circuit Board RF Shield Locations 7.3-5 Viewed from Side 2 Table 7.3-4. Main Circuit Board Side 2 RF Shields Item Reference Motorola Part Description Number Number Number SH401 2686706Z02 Shield, ABACUS SH201 2686705Z02 Shield, Synthesizer SH103...
UHF2 Troubleshooting Waveforms: PP2 TX Signal at Harmonic Filter Input 7.3-7 7.3.6 PP2 TX Signal at Harmonic Filter Input Probe point: C180 (located under shield). 6816985H01-B August 16, 2007...
7.3-10 UHF2 Troubleshooting Waveforms: TP5 Coupler RF Feedback to PCIC 7.3.9 TP5 Coupler RF Feedback to PCIC Test point: TP_160. August 16, 2007 6816985H01-B...
Page 389
UHF2 Troubleshooting Waveforms: TP6 PCIC Control Voltage 7.3-11 7.3.10TP6 PCIC Control Voltage Test point: TP146. 6816985H01-B August 16, 2007...
Page 395
UHF2 Troubleshooting Waveforms: TP13 Mod In 7.3-17 7.3.16TP13 Mod In Test point: TP36. 6816985H01-B August 16, 2007...
Page 396
7.3-18 UHF2 Troubleshooting Waveforms: TP14 1st LO Control Voltage 7.3.17TP14 1st LO Control Voltage Test point VC_TP August 16, 2007 6816985H01-B...
Page 397
UHF2 Troubleshooting Waveforms: PP15 VCO Output 7.3-19 7.3.18PP15 VCO Output Probe point:TP298 for LO Output TP299 for TX Output TP23 for Preselector Output (located under shield). Probe point: C261 (located under shield). 6816985H01-B August 16, 2007...
Page 398
7.3-20 UHF2 Troubleshooting Waveforms: PP17 Frequency Out (19.2 MHz) 7.3.19PP17 Frequency Out (19.2 MHz) Probe point: 16out (Test Point). August 16, 2007 6816985H01-B...
Page 399
UHF2 Troubleshooting Waveforms: PP18 RX RF Input at Antenna Switch 7.3-21 7.3.20PP18 RX RF Input at Antenna Switch Probe point: C1. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. 6816985H01-B August 16, 2007...
Page 401
UHF2 Troubleshooting Waveforms: PP20 Preselector Tuning Voltage 7.3-23 7.3.22PP20 Preselector Tuning Voltage Probe point: C15 and C46. This is a typical value when tuned to receive at 136.075MHz. 6816985H01-B August 16, 2007...
Page 402
7.3-24 UHF2 Troubleshooting Waveforms: PP22 Analog 5V 7.3.23PP22 Analog 5V Probe point: U500, pin 5. August 16, 2007 6816985H01-B...
Page 403
UHF2 Troubleshooting Waveforms: PP23 Preselector 1 Output 7.3-25 7.3.24PP23 Preselector 1 Output Probe point: C1. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. 6816985H01-B August 16, 2007...
Page 404
7.3-26 UHF2 Troubleshooting Waveforms: PP24 Low-Noise Amplifier Output 7.3.25PP24 Low-Noise Amplifier Output Probe point: C35. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. August 16, 2007 6816985H01-B...
Page 405
UHF2 Troubleshooting Waveforms: PP25 Preselector 2 Output 7.3-27 7.3.26PP25 Preselector 2 Output Probe point: C47. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. 6816985H01-B August 16, 2007...
Page 406
7.3-28 UHF2 Troubleshooting Waveforms: PP26 Mixer Out (IF) 7.3.27PP26 Mixer Out (IF) Probe point: C68. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. August 16, 2007 6816985H01-B...
Page 407
UHF2 Troubleshooting Waveforms: PP27 Crystal Filter Out 7.3-29 7.3.28PP27 Crystal Filter Out Probe point: L56. 6816985H01-B August 16, 2007...
Page 408
7.3-30 UHF2 Troubleshooting Waveforms: PP28 Abacus Analog 3V 7.3.29PP28 Abacus Analog 3V Probe point: U501, pin 5. August 16, 2007 6816985H01-B...
Page 409
UHF2 Troubleshooting Waveforms: PP29 2nd LO Control Voltage 7.3-31 7.3.30PP29 2nd LO Control Voltage Probe point: U401, pin 38 (located under shield). 6816985H01-B August 16, 2007...
Page 410
7.3-32 UHF2 Troubleshooting Waveforms: PP30 2nd LO VCO Buffer Output 7.3.31PP30 2nd LO VCO Buffer Output Probe point: C433. August 16, 2007 6816985H01-B...
Page 411
UHF2 Troubleshooting Waveforms: PP31 Analog 5V DC 7.3-33 7.3.32PP31 Analog 5V DC Probe point: U500, pin 5. 6816985H01-B August 16, 2007...
Page 416
7.3-38 UHF2 Troubleshooting Waveforms: SPI B Data 7.3.37SPI B Data Trace 1: MAKO chip enable, R767 (not active high) Trace 2: SPI data clock, C619 Trace 3: SPI data to MAKO, C617. August 16, 2007 6816985H01-B...
Page 417
UHF2 Troubleshooting Waveforms: RX Serial Audio Port (SAP) 7.3-39 7.3.38RX Serial Audio Port (SAP) Note: TX is identical, except the data is probed at test point “TX”. Trace 1: 8 kHz frame sync (each word is 13 bits after falling edge of FSYNC) Trace 2: SAP data at R626 (audio data from MAKO CODEC to Patriot DSP) Note: Transmit is identical, except data acquired at R625 Trace 3: 512kHz bit clock at R616.
Page 418
7.3-40 UHF2 Troubleshooting Waveforms: PP33 SPI Data 7.3.39PP33 SPI Data Probe Point: R802. August 16, 2007 6816985H01-B...
These waveforms are for reference only; the actual data depicted will vary depending upon operating conditions. This manual is to be used in conjunction with the ASTRO XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 68P81094C09), which uses the pass/fail service approach to radio problems.
7.4.4-2 700/800 MHz Troubleshooting Waveforms: RF Test Points 7.4.3 RF Test Points The following RF block diagram and accompanying table (Table 7.4-2) shows the location of key probe points (PP) and test points (TP) for the XTS 2500 radio. Legend Coupler PCIC Detector...
7.4.4 Main Circuit Board RF Shield Locations Viewed from Side 1 MAEPF-27489-O Table 7.4-3. Main Circuit Board Side 1 RF Shields Item Reference Motorola Part Description Number Number Number SH401 2685089D01 Shield, ABACUS...
700/800 MHz Troubleshooting Waveforms: Main Circuit Board RF Shield Locations 7.4.4-5 Viewed from Side 2 MAEPF-27488-O Table 7.4-4. Main Circuit Board Side 2 RF Shields Item Reference Motorola Part Description Number Number Number 2685090D01 Shield, Mixer SH402 2685080D01 Shield, 2nd LO...
700/800 MHz Troubleshooting Waveforms: PP2 TX Signal at Harmonic Filter Input 7.4.4-7 7.4.6 PP2 TX Signal at Harmonic Filter Input Probe point: C105 (located under shield). 6816985H01-B August 16, 2007...
7.4.4-10 700/800 MHz Troubleshooting Waveforms: TP5 Coupler RF Feedback to PCIC 7.4.9 TP5 Coupler RF Feedback to PCIC Test point: TP102. August 16, 2007 6816985H01-B...
Page 435
700/800 MHz Troubleshooting Waveforms: TP6 PCIC Control Voltage 7.4.4-11 7.4.10TP6 PCIC Control Voltage Test point: TP101. 6816985H01-B August 16, 2007...
700/800 MHz Troubleshooting Waveforms: TP10 TRB 7.4.4-15 7.4.14TP10 TRB Test point: TP001. Signal shows transition between RX mode (low) and TX mode (high). 6816985H01-B August 16, 2007...
Page 440
7.4.4-16 700/800 MHz Troubleshooting Waveforms: PP11 Prescalar Input to FracN Synthesizer 7.4.15PP11 Prescalar Input to FracN Synthesizer Prescalar input for RX/TX 869.9375 MHz Prescalar input for RX/TX 775.9375 MHz Probe point: C236 (located under shield). August 16, 2007 6816985H01-B...
Page 441
700/800 MHz Troubleshooting Waveforms: PP12 Reference Crystal Output 7.4.4-17 7.4.16PP12 Reference Crystal Output Probe point: R243, C293. Crystal output AC coupled. Peak-to-peak value is accurate. 6816985H01-B August 16, 2007...
Page 442
7.4.4-18 700/800 MHz Troubleshooting Waveforms: TP13 Mod In 7.4.17TP13 Mod In Test point: TP203. August 16, 2007 6816985H01-B...
Page 443
700/800 MHz Troubleshooting Waveforms: TP14 1st LO Control Voltage 7.4.4-19 7.4.18TP14 1st LO Control Voltage Typical value when tuned to receive at 758.475 MHz. Typical value when tuned to receive at 873.775 MHz. Test point TP202 6816985H01-B August 16, 2007...
Page 444
7.4.4-20 700/800 MHz Troubleshooting Waveforms: PP15 VCO Output 7.4.19PP15 VCO Output RX VCO LOW Injection TX VCO RX VCO HIGH Injection Probe point:C261 for LO Output (located under shield) C266 for TX Output (located under shield) C236 for Preselector Output (located under shield). August 16, 2007 6816985H01-B...
Page 445
700/800 MHz Troubleshooting Waveforms: PP16 VCO RX LO 7.4.4-21 7.4.20PP16 VCO RX LO Probe point: C261 (located under shield). 6816985H01-B August 16, 2007...
Page 446
7.4.4-22 700/800 MHz Troubleshooting Waveforms: PP17 Frequency Out (16.8 MHz) 7.4.21PP17 Frequency Out (16.8 MHz) Probe point: Shield C293. August 16, 2007 6816985H01-B...
Page 447
700/800 MHz Troubleshooting Waveforms: PP18 RX RF Input at Antenna Switch 7.4.4-23 7.4.22PP18 RX RF Input at Antenna Switch Probe point: FL1, pin 1. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. 6816985H01-B August 16, 2007...
Page 449
700/800 MHz Troubleshooting Waveforms: PP20 Preselector Tuning Voltage 7.4.4-25 7.4.24PP20 Preselector Tuning Voltage Probe point: FL1, pin 3; FL2, pin 3. This is a typical value when tuned to receive at 764.125 MHz. 6816985H01-B August 16, 2007...
Page 450
7.4.4-26 700/800 MHz Troubleshooting Waveforms: PP21 RX RF Input after Antenna Switch 7.4.25PP21 RX RF Input after Antenna Switch Probe point: FL1, pin 1. August 16, 2007 6816985H01-B...
Page 451
700/800 MHz Troubleshooting Waveforms: PP22 Analog 5V 7.4.4-27 7.4.26PP22 Analog 5V Probe point: U500, pin 5. 6816985H01-B August 16, 2007...
Page 452
7.4.4-28 700/800 MHz Troubleshooting Waveforms: PP23 Preselector 1 Output 7.4.27PP23 Preselector 1 Output Probe point: FL1, pin 2. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. August 16, 2007 6816985H01-B...
Page 453
700/800 MHz Troubleshooting Waveforms: PP24 Low-Noise Amplifier Output 7.4.4-29 7.4.28PP24 Low-Noise Amplifier Output Probe point: FL2, pin 1. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. 6816985H01-B August 16, 2007...
Page 454
7.4.4-30 700/800 MHz Troubleshooting Waveforms: PP25 Preselector 2 Output 7.4.29PP25 Preselector 2 Output Probe point: FL2, pin 2. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. August 16, 2007 6816985H01-B...
Page 455
700/800 MHz Troubleshooting Waveforms: PP26 Mixer Out (IF) 7.4.4-31 7.4.30PP26 Mixer Out (IF) Probe point: U1, pin ?. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. 6816985H01-B August 16, 2007...
Page 456
7.4.4-32 700/800 MHz Troubleshooting Waveforms: PP27 Crystal Filter Out 7.4.31PP27 Crystal Filter Out Probe point: FL3, pin ?. August 16, 2007 6816985H01-B...
Page 457
700/800 MHz Troubleshooting Waveforms: PP28 Abacus Analog 3V 7.4.4-33 7.4.32PP28 Abacus Analog 3V Probe point: U501, pin 5. 6816985H01-B August 16, 2007...
Page 458
7.4.4-34 700/800 MHz Troubleshooting Waveforms: PP29 2nd LO Control Voltage 7.4.33PP29 2nd LO Control Voltage Probe point: U401, pin 38 (located under shield). August 16, 2007 6816985H01-B...
Page 459
700/800 MHz Troubleshooting Waveforms: PP30 2nd LO VCO Buffer Output 7.4.4-35 7.4.34PP30 2nd LO VCO Buffer Output Probe point: Shield C407. 6816985H01-B August 16, 2007...
Page 460
7.4.4-36 700/800 MHz Troubleshooting Waveforms: PP31 Analog 5V DC 7.4.35PP31 Analog 5V DC Probe point: U500, pin 5. August 16, 2007 6816985H01-B...
700/800 MHz Troubleshooting Waveforms: PP32 Abacus Digital 3V 7.4.4-37 7.4.36PP32 Abacus Digital 3V Probe point: U502, pin 5. 6816985H01-B August 16, 2007...
Page 462
7.4.4-38 700/800 MHz Troubleshooting Waveforms: TX Audio 1 kHz Tone 7.4.37TX Audio 1 kHz Tone Trace 1: TP203 Mod In (640 mVp-p 1 kHz tone 1.5 Vdc) Trace 2: U202, pin 1 (620 mVp-p 1 kHz tone) Trace 3: FL200, pin 8 (1.2 MHz square wave 0 to 3 V) Note: Transmit audio 1 kHz tone, which provides 3 kHz deviation.
Page 463
700/800 MHz Troubleshooting Waveforms: 16.8 MHz Buffer Input and Output 7.4.4-39 7.4.3816.8 MHz Buffer Input and Output Trace 1: Buffer input at R729. Trace 2: Buffer output at C726. Note: There should be no voltage gain between the Buffer’s input and output. The 16.8MHz clock should be an approximately 1V peak-to-peak since wave.
Page 465
700/800 MHz Troubleshooting Waveforms: SPI B Data 7.4.4-41 7.4.40SPI B Data Trace 1: MAKO chip enable, R767 (not active high) Trace 2: SPI data clock, C619 Trace 3: SPI data to MAKO, C617. 6816985H01-B August 16, 2007...
Page 466
7.4.4-42 700/800 MHz Troubleshooting Waveforms: RX Serial Audio Port (SAP) 7.4.41RX Serial Audio Port (SAP) Note: TX is identical, except the data is probed at test point “TX”. Trace 1: 8 kHz frame sync (each word is 13 bits after falling edge of FSYNC) Trace 2: SAP data at R626 (audio data from MAKO CODEC to Patriot DSP) Note: Transmit is identical, except data acquired at R625 Trace 3: 512kHz bit clock at R616.
Page 467
700/800 MHz Troubleshooting Waveforms: PP33 SPI Data 7.4.4-43 7.4.42PP33 SPI Data Probe Point: R802. 6816985H01-B August 16, 2007...
These waveforms are for reference only; the actual data depicted will vary depending upon operating conditions. This manual is to be used in conjunction with the ASTRO XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 68P81094C09), which uses the pass/fail service approach to radio problems.
7.5-2 Troubleshooting Waveforms: RF Test Points 7.5.3 RF Test Points The following RF block diagram and accompanying table (Table 7.5-2) shows the location of key probe points (PP) and test points (TP) for the XTS 2500 radio. Legend Coupler PCIC Detector Bias Probe/Test Point...
7.5.4 Main Circuit Board RF Shield Locations Viewed from Side 1 MAEPF-27489-O Table 7.5-3. Main Circuit Board Side 1 RF Shields Item Reference Motorola Part Description Number Number Number SH401 2616552H01 Shield, ABACUS...
Troubleshooting Waveforms: Main Circuit Board RF Shield Locations 7.5-5 Viewed from Side 2 MAEPF-27488-O Table 7.5-4. Main Circuit Board Side 2 RF Shields Item Reference Motorola Part Description Number Number Number 2616071H01 Shield, Mixer SH402 2616518H01 Shield, 2nd LO SH202...
Troubleshooting Waveforms: PP2 TX Signal at Harmonic Filter Input 7.5-7 7.5.6 PP2 TX Signal at Harmonic Filter Input Probe point: C105 (located under shield). 6816985H01-B August 16, 2007...
Troubleshooting Waveforms: TP10 TRB 7.5-15 7.5.14TP10 TRB Test point: TP001. Signal shows transition between RX mode (low) and TX mode (high). 6816985H01-B August 16, 2007...
Page 490
7.5-16 Troubleshooting Waveforms: PP11 Prescalar Input to FracN Synthesizer 7.5.15PP11 Prescalar Input to FracN Synthesizer Prescalar Input for TX/RX 935.0125MHz Prescalar Input for TX/RX 940.9875MHz Probe point: C236 (located under shield). August 16, 2007 6816985H01-B...
Page 491
Troubleshooting Waveforms: PP12 Reference Crystal Output 7.5-17 7.5.16PP12 Reference Crystal Output Probe point: R243, C293. Crystal output AC coupled. Peak-to-peak value is accurate. 6816985H01-B August 16, 2007...
Page 492
7.5-18 Troubleshooting Waveforms: TP13 Mod In 7.5.17TP13 Mod In Test point: TP203. August 16, 2007 6816985H01-B...
Page 493
Troubleshooting Waveforms: TP14 1st LO Control Voltage 7.5-19 7.5.18TP14 1st LO Control Voltage Typical value when tuned to receive at 935.0625 MHz. Typical value when tuned to receive at 940.9875 MHz. Test point TP202 6816985H01-B August 16, 2007...
Page 494
7.5-20 Troubleshooting Waveforms: PP15 VCO Output 7.5.19PP15 VCO Output RX VCO LOW Injection TX VCO RX VCO HIGH Injection Probe point:C261 for LO Output (located under shield) C266 for TX Output (located under shield) C236 for Preselector Output (located under shield). August 16, 2007 6816985H01-B...
Page 495
Troubleshooting Waveforms: PP16 VCO RX LO 7.5-21 7.5.20PP16 VCO RX LO Probe point: C261 (located under shield). 6816985H01-B August 16, 2007...
Page 496
7.5-22 Troubleshooting Waveforms: PP17 Frequency Out (16.8 MHz) 7.5.21PP17 Frequency Out (16.8 MHz) Probe point: Shield C293. August 16, 2007 6816985H01-B...
Page 497
Troubleshooting Waveforms: PP18 RX RF Input at Antenna Switch 7.5-23 7.5.22PP18 RX RF Input at Antenna Switch Probe point: FL1, pin 1. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. 6816985H01-B August 16, 2007...
Page 499
Troubleshooting Waveforms: PP20 Preselector Tuning Voltage 7.5-25 7.5.24PP20 Preselector Tuning Voltage Probe point: FL1, pin 3; FL2, pin 3. This is a typical value when tuned to receive at 935.0625 MHz. 6816985H01-B August 16, 2007...
Page 500
7.5-26 Troubleshooting Waveforms: PP21 RX RF Input after Antenna Switch 7.5.25PP21 RX RF Input after Antenna Switch Probe point: FL1, pin 1. August 16, 2007 6816985H01-B...
Page 501
Troubleshooting Waveforms: PP22 Analog 5V 7.5-27 7.5.26PP22 Analog 5V Probe point: U500, pin 5. 6816985H01-B August 16, 2007...
Page 502
7.5-28 Troubleshooting Waveforms: PP23 Preselector 1 Output 7.5.27PP23 Preselector 1 Output Probe point: FL1, pin 2. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. August 16, 2007 6816985H01-B...
Page 503
Troubleshooting Waveforms: PP24 Low-Noise Amplifier Output 7.5-29 7.5.28PP24 Low-Noise Amplifier Output Probe point: FL2, pin 1. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. 6816985H01-B August 16, 2007...
Page 504
7.5-30 Troubleshooting Waveforms: PP25 Preselector 2 Output 7.5.29PP25 Preselector 2 Output Probe point: FL2, pin 2. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. August 16, 2007 6816985H01-B...
Page 505
Troubleshooting Waveforms: PP26 Mixer Out (IF) 7.5-31 7.5.30PP26 Mixer Out (IF) Probe point: L10. Typical RX signal with 1 kHz modulation. Display shows modulation components of carrier. 6816985H01-B August 16, 2007...
Page 506
7.5-32 Troubleshooting Waveforms: PP27 Crystal Filter Out 7.5.31PP27 Crystal Filter Out Probe point: C413. August 16, 2007 6816985H01-B...
Page 507
Troubleshooting Waveforms: PP28 Abacus Analog 3V 7.5-33 7.5.32PP28 Abacus Analog 3V Probe point: U501, pin 5. 6816985H01-B August 16, 2007...
Page 508
7.5-34 Troubleshooting Waveforms: PP29 2nd LO Control Voltage 7.5.33PP29 2nd LO Control Voltage Probe point: U401, pin 38 (located under shield). August 16, 2007 6816985H01-B...
Page 509
Troubleshooting Waveforms: PP30 2nd LO VCO Buffer Output 7.5-35 7.5.34PP30 2nd LO VCO Buffer Output Probe point: Shield C407. 6816985H01-B August 16, 2007...
Page 510
7.5-36 Troubleshooting Waveforms: PP31 Analog 5V DC 7.5.35PP31 Analog 5V DC Probe point: U500, pin 5. August 16, 2007 6816985H01-B...
Page 511
Troubleshooting Waveforms: PP32 Abacus Digital 3V 7.5-37 7.5.36PP32 Abacus Digital 3V Probe point: U502, pin 5. 6816985H01-B August 16, 2007...
Page 512
7.5-38 Troubleshooting Waveforms: TX Audio 1 kHz Tone 7.5.37TX Audio 1 kHz Tone Trace 1: TP203 Mod In (640 mVp-p 1 kHz tone 1.5 Vdc) Trace 2: U202, pin 1 (620 mVp-p 1 kHz tone) Trace 3: FL200, pin 8 (1.2 MHz square wave 0 to 3 V) Note: Transmit audio 1 kHz tone, which provides 3 kHz deviation.
Page 513
Troubleshooting Waveforms: 16.8 MHz Buffer Input and Output 7.5-39 7.5.3816.8 MHz Buffer Input and Output Acquisition Sampling mode real time Configuration 4GSa/s Memory depth automatic Memory depth 1004pts Sampling rate automatic Sampling rate 2.00 GSa/s Averaging off 9-bit BW Filter off Interpolation on Channel 1 Scale 200 nV/div Offset 644 mV Coupling DC Impedance 1M Ohm Attenuation 10.00 : 1 Atten units ratio Skew 0.0 s...
Page 514
7.5-40 Troubleshooting Waveforms: 32.768 kHz Clock Outputs 7.5.3932.768 kHz Clock Outputs Trace 1: Output at C743. Trace 2: Output at U712, pin 4. August 16, 2007 6816985H01-B...
Troubleshooting Waveforms: SPI B Data 7.5-41 7.5.40SPI B Data Acquisition Sampling mode real time Configuration 4GSa/s Memory depth automatic Memory depth 1004pts Sampling rate automatic Sampling rate 50 MSa/s Averaging off 9-bit BW Filter off Interpolation on Channel 1 Scale 1.99 V/div Offset -4.21 V Coupling DC Impedance 1M Ohm Atteunation 10.00 : 1 Atten units ratio Skew 0.0 s Ext adapter None Ext coupler None Ext gain 1.00E+00 Ext offset 0.0E+00...
Page 516
7.5-42 Troubleshooting Waveforms: RX Serial Audio Port (SAP) 7.5.41RX Serial Audio Port (SAP) Acquisition Sampling mode real time Configuration 4GSa/s Memory depth automatic Memory depth 1004pts Sampling rate automatic Sampling rate 5.00 MSa/s Averaging off 9-bit BW Filter off Interpolation on Channel 1 Scale 1.99 V/div Offset -4.21 V Coupling DC Impedance 1M Ohm Atteunation 10.00 : 1 Atten units ratio Skew 0.0 s...
ASTRO XTS 2500/XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems. A blank entry in the “To/From” column of J601 indicates the signal is accessible only at J601.
Page 529
VHF Troubleshooting Tables: Tables 8.1-5 Table 8.1-3. FLASH (U803) Pinout (Continued) U803 Accessible on Description To/From Comment Pin Number Main Board? DATA 12 DATA 11 DATA 10 DATA 9 DATA 8 DATA 7 DATA 6 DATA 5 DATA 4 DATA 3 DATA 2 DATA 1 DATA 0...
VHF Troubleshooting Tables: Tables 8.1-7 Table 8.1-4. SRAM (U804) Pinout (Continued) Accessible U804 Pin Description To/From Comment on Main Number Board? NOT USED DATA 15 DATA 14 DATA 13 DATA 12 DATA 11 DATA 10 DATA 9 DATA 8 DATA 7 R644 DATA 6 R643...
Page 532
8.1-8 VHF Troubleshooting Tables: Tables Table 8.1-5. Patriot MCU/DSP (U800) Pinout (Continued) U800 Pin Accessible on Description To/From Comment Number Main Board? MAKO_INT* MAKO_INT (Test Point) OPT_SEL1 U201 pin 1 NOT USED CODEC_FSYNC SYNC 8 KHz Pulse OPT_SEL2_IN U601 pin 1 KEYPAD_ROW0 J601, pin 16 KEYPAD_ROW1...
Page 536
8.1-12 VHF Troubleshooting Tables: Tables Table 8.1-5. Patriot MCU/DSP (U800) Pinout (Continued) U800 Pin Accessible on Description To/From Comment Number Main Board? NOT USED CODEC_RX R775 DSP to MAKO Rx Audio Data RX_SSI_FSYNC SSI_FS 20 KHz pulse RX_SSI_CLK SSI_CK 1.2 MHz TX_SSI_DATA U201, pin 4 Data From...
Page 537
VHF Troubleshooting Tables: Tables 8.1-13 Table 8.1-5. Patriot MCU/DSP (U800) Pinout (Continued) U800 Pin Accessible on Description To/From Comment Number Main Board? NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED...
Page 538
8.1-14 VHF Troubleshooting Tables: Tables Table 8.1-5. Patriot MCU/DSP (U800) Pinout (Continued) U800 Pin Accessible on Description To/From Comment Number Main Board? ONCE/JTAG ONCE/JTAG TRST TRST ONCE/JTAG ONCE/JTAG ONCE/JTAG NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED Disabled NOT USED...
Page 539
VHF Troubleshooting Tables: Tables 8.1-15 Table 8.1-5. Patriot MCU/DSP (U800) Pinout (Continued) U800 Pin Accessible on Description To/From Comment Number Main Board? ADDRESS 16 ADDRESS 17 ADDRESS 18 ADDRESS 19 ADDRESS 20 ADDRESS 21 ADDRESS 22 ADDRESS 23 R814 DATA 15 DATA 14 DATA 13 DATA 12...
ASTRO XTS 2500/XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems. A blank entry in the “To/From” column of J601 indicates the signal is accessible only at J601.
Page 551
UHF1 Troubleshooting Tables: Tables 8.2-5 Table 8.2-3. FLASH (U803) Pinout (Continued) U402 Accessible on Description To/From Comment Pin Number Main Board? DATA 12 DATA 11 DATA 10 DATA 9 DATA 8 DATA 7 DATA 6 DATA 5 DATA 4 DATA 3 DATA 2 DATA 1 DATA 0...
UHF1 Troubleshooting Tables: Tables 8.2-7 Table 8.2-4. SRAM (U804) Pinout (Continued) Accessible U403 Pin Description To/From Comment on Main Number Board? NOT USED DATA 15 DATA 14 DATA 13 DATA 12 DATA 11 DATA 10 DATA 9 DATA 8 DATA 7 R644 DATA 6 R643...
Page 554
8.2-8 UHF1 Troubleshooting Tables: Tables Table 8.2-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? MAKO_INT* MAKO_INT (Test Point) OPT_SEL1 U201 pin 1 NOT USED CODEC_FSYNC SYNC 8 KHz Pulse OPT_SEL2_IN U601 pin 1 KEYPAD_ROW0 J601, pin 16 KEYPAD_ROW1...
Page 558
8.2-12 UHF1 Troubleshooting Tables: Tables Table 8.2-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? NOT USED CODEC_RX R775 DSP to MAKO Rx Audio Data RX_SSI_FSYNC SSI_FS 20 KHz pulse RX_SSI_CLK SSI_CK 1.2 MHz TX_SSI_DATA Data From DSP to A/D...
Page 559
UHF1 Troubleshooting Tables: Tables 8.2-13 Table 8.2-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED...
Page 560
8.2-14 UHF1 Troubleshooting Tables: Tables Table 8.2-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? ONCE/JTAG ONCE/JTAG TRST TRST ONCE/JTAG ONCE/JTAG ONCE/JTAG NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED Disabled NOT USED...
Page 561
UHF1 Troubleshooting Tables: Tables 8.2-15 Table 8.2-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? ADDRESS 16 ADDRESS 17 ADDRESS 18 ADDRESS 19 ADDRESS 20 ADDRESS 21 ADDRESS 22 ADDRESS 23 R814 DATA 15 DATA 14 DATA 13 DATA 12...
ASTRO XTS 2500/XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems. A blank entry in the “To/From” column of J601 indicates the signal is accessible only at J601.
Page 573
UHF2 Troubleshooting Tables: Tables 8.3-5 Table 8.3-3. FLASH (U803) Pinout (Continued) U402 Accessible on Description To/From Comment Pin Number Main Board? DATA 12 DATA 11 DATA 10 DATA 9 DATA 8 DATA 7 DATA 6 DATA 5 DATA 4 DATA 3 DATA 2 DATA 1 DATA 0...
UHF2 Troubleshooting Tables: Tables 8.3-7 Table 8.3-4. SRAM (U804) Pinout (Continued) Accessible U403 Pin Description To/From Comment on Main Number Board? NOT USED DATA 15 DATA 14 DATA 13 DATA 12 DATA 11 DATA 10 DATA 9 DATA 8 DATA 7 R644 DATA 6 R643...
Page 576
8.3-8 UHF2 Troubleshooting Tables: Tables Table 8.3-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? MAKO_INT* MAKO_INT (Test Point) OPT_SEL1 U201 pin 1 NOT USED CODEC_FSYNC SYNC 8 KHz Pulse OPT_SEL2_IN U601 pin 1 KEYPAD_ROW0 J601, pin 16 KEYPAD_ROW1...
Page 580
8.3-12 UHF2 Troubleshooting Tables: Tables Table 8.3-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? NOT USED CODEC_RX R775 DSP to MAKO Rx Audio Data RX_SSI_FSYNC SSI_FS 20 KHz pulse RX_SSI_CLK SSI_CK 1.2 MHz TX_SSI_DATA Data From DSP to A/D...
Page 581
UHF2 Troubleshooting Tables: Tables 8.3-13 Table 8.3-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED...
Page 582
8.3-14 UHF2 Troubleshooting Tables: Tables Table 8.3-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? ONCE/JTAG ONCE/JTAG TRST TRST ONCE/JTAG ONCE/JTAG ONCE/JTAG NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED Disabled NOT USED...
Page 583
UHF2 Troubleshooting Tables: Tables 8.3-15 Table 8.3-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? ADDRESS 16 ADDRESS 17 ADDRESS 18 ADDRESS 19 ADDRESS 20 ADDRESS 21 ADDRESS 22 ADDRESS 23 R814 DATA 15 DATA 14 DATA 13 DATA 12...
(page 4.4-1), Chapter 5, Troubleshooting Procedures (page 5-1), Chapter 6.4, 700/800 MHz Troubleshooting Charts (page 6.4-1), and Chapter 7.4, 700/800 MHz Troubleshooting Waveforms (page 7.4-1). This manual is to be used in conjunction with the ASTRO XTS 2500/XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/ fail service approach to radio problems.
Page 595
Tables 8.4-5 Table 8.4-3. FLASH (U803) Pinout (Continued) U402 Accessible on Description To/From Comment Pin Number Main Board? DATA 12 DATA 11 DATA 10 DATA 9 DATA 8 DATA 7 DATA 6 DATA 5 DATA 4 DATA 3 DATA 2 DATA 1 DATA 0 CR801, pin 2...
Tables 8.4-7 Table 8.4-4. SRAM (U804) Pinout (Continued) Accessible U403 Pin Description To/From Comment on Main Number Board? NOT USED DATA 15 DATA 14 DATA 13 DATA 12 DATA 11 DATA 10 DATA 9 DATA 8 DATA 7 R644 DATA 6 R643 DATA 5 R642...
Page 598
8.4-8 Tables Table 8.4-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? MAKO_INT* MAKO_INT (Test Point) OPT_SEL1 U201 pin 1 NOT USED CODEC_FSYNC SYNC 8 KHz Pulse OPT_SEL2_IN U601 pin 1 KEYPAD_ROW0 J601, pin 16 KEYPAD_ROW1 J601, pin 17 KEYPAD_ROW2...
Page 602
8.4-12 Tables Table 8.4-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? NOT USED CODEC_RX R775 DSP to MAKO Rx Audio Data RX_SSI_FSYNC SSI_FS 20 KHz pulse RX_SSI_CLK SSI_CK 1.2 MHz TX_SSI_DATA U201, pin 4 Data From DSP to A/D BSY_OUT_CTS*...
Page 603
Tables 8.4-13 Table 8.4-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED...
Page 604
8.4-14 Tables Table 8.4-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? ONCE/JTAG ONCE/JTAG TRST TRST ONCE/JTAG ONCE/JTAG ONCE/JTAG NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED Disabled NOT USED NOT USED...
Page 605
Tables 8.4-15 Table 8.4-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? ADDRESS 16 ADDRESS 17 ADDRESS 18 ADDRESS 19 ADDRESS 20 ADDRESS 21 ADDRESS 22 ADDRESS 23 R814 DATA 15 DATA 14 DATA 13 DATA 12 DATA 11...
8.4-16 Tables Table 8.4-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? OE_EN EB1_N EBO_N NOT USED WAIT NOT USED B_CLK Table 8.4-6. MAKO (U701) Pinout Accessible Pin Ref U701 Pin Name To/From Comment on Main Number...
(page 4.5-1), Chapter 5, Troubleshooting Procedures (page 5-1), Chapter 6.5, 900 MHz Troubleshooting Charts (page 6.5-1), and Chapter 7.5, Troubleshooting Waveforms (page 7.5-1). This manual is to be used in conjunction with the ASTRO XTS 2500/XTS 2500 Digital Portable Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service approach to radio problems.
Page 617
Tables 8.5-5 Table 8.5-3. FLASH (U803) Pinout (Continued) U402 Accessible on Description To/From Comment Pin Number Main Board? DATA 12 DATA 11 DATA 10 DATA 9 DATA 8 DATA 7 DATA 6 DATA 5 DATA 4 DATA 3 DATA 2 DATA 1 DATA 0 CR801, pin 2...
Tables 8.5-7 Table 8.5-4. SRAM (U804) Pinout (Continued) Accessible U403 Pin Description To/From Comment on Main Number Board? NOT USED DATA 15 DATA 14 DATA 13 DATA 12 DATA 11 DATA 10 DATA 9 DATA 8 DATA 7 R644 DATA 6 R643 DATA 5 R642...
Page 620
8.5-8 Tables Table 8.5-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? MAKO_INT* MAKO_INT (Test Point) OPT_SEL1 U201 pin 1 NOT USED CODEC_FSYNC SYNC 8 KHz Pulse OPT_SEL2_IN U601 pin 1 KEYPAD_ROW0 J601, pin 16 KEYPAD_ROW1 J601, pin 17 KEYPAD_ROW2...
Page 624
8.5-12 Tables Table 8.5-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? NOT USED CODEC_RX R775 DSP to MAKO Rx Audio Data RX_SSI_FSYNC SSI_FS 20 KHz pulse RX_SSI_CLK SSI_CK 1.2 MHz TX_SSI_DATA U201, pin 4 Data From DSP to A/D BSY_OUT_CTS*...
Page 625
Tables 8.5-13 Table 8.5-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED...
Page 626
8.5-14 Tables Table 8.5-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? ONCE/JTAG ONCE/JTAG TRST TRST ONCE/JTAG ONCE/JTAG ONCE/JTAG NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED Disabled NOT USED NOT USED...
Page 627
Tables 8.5-15 Table 8.5-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? ADDRESS 16 ADDRESS 17 ADDRESS 18 ADDRESS 19 ADDRESS 20 ADDRESS 21 ADDRESS 22 ADDRESS 23 R814 DATA 15 DATA 14 DATA 13 DATA 12 DATA 11...
8.5-16 Tables Table 8.5-5. Patriot MCU/DSP (U800) Pinout (Continued) U401 Accessible on Description To/From Comment Pin Number Main Board? OE_EN EB1_N EBO_N NOT USED WAIT NOT USED B_CLK Table 8.5-6. MAKO (U701) Pinout Accessible Pin Ref U701 Pin Name To/From Comment on Main Number...
VHF Schematics, Board Overlays, and Parts Lists 9.1-1 Chapter 9.1 VHF Schematics, Board Overlays, and Parts Lists 9.1.1 Introduction This chapter contains the schematics, board layouts, and parts lists for the XTS 2500/2500 /2250/1500 radios. Use them in conjunction with the theory of operation and the troubleshooting procedures, charts, and waveforms to isolate a problem to the component level.
9.1-2 VHF Schematics, Board Overlays, and Parts Lists INT_MIC_P Internal Mic Bias MAKO IC U701 R751, R753, C751, C753, C755 Amp G2 Pre-amp CODEC Gain = -30 G1 Gain A/D 16-Bit to 0 dB = 15 dB External Mic Bias HPF = 200 Hz EXT_MIC_P R750, R752,...
VHF Schematics, Board Overlays, and Parts Lists 9.1-3 l i f l i f Figure 9.1-2. PMLD4303A/ PMLD4303D Top Level Schematic 6816985H01-B August 16, 2007...
Page 663
VHF Schematics, Board Overlays, and Parts Lists 9.1-29 PMLD4303A/ PMLD4303D Main Circuit Board MOTOROLA MOTOROLA MOTOROLA Electrical Parts List ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER MOTOROLA C127 2113944M09 CAP,FXD,4.3PF,.1PF+/-,50V- C176 2113944M20 CAP,FXD,12PF,+2%,-2%,50V- C213 2113946K02 CAP CER CHP 0.10UF 16V...
Page 664
9.1-30 VHF Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER C248 NOTPLACED C293 2113945A03 CAP CER CHP 330PF 50V 10% C437 2113944C85...
Page 665
VHF Schematics, Board Overlays, and Parts Lists 9.1-31 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER C528 2113945A58 CAP,FXD,910PF,+10%,-10%,50V- C638 2113945C31 CAP,FXD,.1UF,+10%,-10%,50V- C704 2113946F01 CAP CER CHP 2.2UF 6.3V 10%...
Page 666
9.1-32 VHF Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER C771 2113945C31 CAP,FXD,.1UF,+10%,-10%,50V- C856 NOTPLACED 4815096H01 VARACTOR DIODE 1SV305 F500 6515076H01 FUSE CHIP SMT TR/1608FF 3A...
Page 667
VHF Schematics, Board Overlays, and Parts Lists 9.1-33 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER L200 2414017Q47 IDCTR,FXD,1UH,10%,50MA,.45OH 2414032F34 IDCTR,WW,100NH,5%,400MA,.46 2414017N16 IDCTR,CHIP,22NH,5%,600MA,.54O Q698 4813973A81 XSTR,BIP GP SS,DIG,NPN AND...
Page 668
9.1-34 VHF Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER R149 0613952Q89 CER CHIP RES 4700 OHM 5% R214 0613952Q73 CER CHIP RES 1000 OHM 5%...
Page 669
VHF Schematics, Board Overlays, and Parts Lists 9.1-35 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER R641 0613952Q49 CER CHIP RES 100 OHM 5% 0402 R711 0613952G67 CER CHIP RES 0.0 +/-0.050 OHM...
Page 670
For optimum performance, order replacement diodes, transistors, and circuit ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION modules by Motorola part number only. NUMBER NUMBER NUMBER When ordering crystals, specify carrier frequency, crystal frequency, crystal type number, and Motorola part number. Part value notations: S506 4070354A01 SW,SM,SPST,PUSH-...
UHF1 Schematics, Board Overlays, and Parts Lists 9.2-1 Chapter 9.2 UHF1 Schematics, Board Overlays, and Parts Lists 9.2.1 Introduction This chapter contains the schematics, board layouts, and parts lists for the XTS 2500/2500 /2250/1500 radios. Use them in conjunction with the theory of operation and the troubleshooting procedures, charts, and waveforms to isolate a problem to the component level.
UHF1 Schematics, Board Overlays, and Parts Lists 9.2-27 E140 Place Close to PA Choke RAW_B+ 2405688Z01 C142 C141 C122 330pF 100pF 30 X 60 Tantalum 0.1uF 30 X 60 2113951C12 2311049A37 30 X 60 C172 L119 C187 C110 18.08nH 2113945C31 2113944C45 C174 100pF...
Page 700
9.2-30 UHF1 Schematics, Board Overlays, and Parts Lists PMLE2537A/ PMLE2537D Main Circuit Board MOTOROLA MOTOROLA MOTOROLA Electrical Parts List ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER MOTOROLA 2113944A29 CAP CER CHP 22.0PF 50V 5% 2113944A07 CAP CER CHP 1.8PF 50V +/-...
Page 701
UHF1 Schematics, Board Overlays, and Parts Lists 9.2-31 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER C177 2113944C22 CAP CER CHP 4.7PF 50V +/- C219 2313960D07 CAP,FXD,10,+10,-10,16,SM,- C251 2113944M16 CAP,FXD,8.2PF,.1PF+/-,50V-...
Page 702
9.2-32 UHF1 Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER C416 2113946K02 CAP CER CHP 0.10UF 16V C463 2113945C27 CAP,FXD,.047UF,+10%,- C511 2113946K02 CAP CER CHP 0.10UF 16V...
Page 703
UHF1 Schematics, Board Overlays, and Parts Lists 9.2-33 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER C680 2113944A31 CAP CER CHP 33.0PF 50V 5% C727 2113944A40 CAP CER CHP 100.0PF 50V 5%...
Page 704
9.2-34 UHF1 Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER 4815096H01 VARACTOR DIODE 1SV305 D600 4813978B18 DIODE,SWG,BAT54,SM,SOT- 2414017K32 IDCTR,CHIP,560NH,5%,50MA,5O L176 2460591D24 COIL AIR WOUND INDUC 19.71 23,200MA,30V,.2W,SHTK,...
Page 705
UHF1 Schematics, Board Overlays, and Parts Lists 9.2-35 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER L276 2414032F41 IDCTR,WW,390NH,10%,200MA,1 L710 2416307H01 IDCTR,WW,680NH,5%,0603 Q704 NOTPLACED R108 0613952G67 CER CHIP RES 0.0 +/-0.050 OHM .5OHM,CER,40 Q,730M...
Page 706
9.2-36 UHF1 Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER R202 0613952Q75 CER CHIP RES 1200 OHM 5 R253 0613952Q96 CER CHIP RES 9100 OHM 5...
Page 707
UHF1 Schematics, Board Overlays, and Parts Lists 9.2-37 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER R625 0613952Q49 CER CHIP RES 100 OHM 5 0402 R670 0613952Q49 CER CHIP RES 100 OHM 5 0402...
Page 708
9.2-38 UHF1 Schematics, Board Overlays, and Parts Lists Notes MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER R799 0613952R01 CER CHIP RES 10K OHM 5% R843 0613952R41 CER CHIP RES 470K OHM 5%...
Page 709
Notes: MOTOROLA For optimum performance, order replacement diodes, transistors, and circuit ITEM PART DESCRIPTION modules by Motorola part number only. NUMBER When ordering crystals, specify carrier frequency, crystal frequency, crystal type number, and Motorola part number. Part value notations: VR663...
Page 710
9.2-40 UHF1 Schematics, Board Overlays, and Parts Lists Notes August 16, 2007 6816985H01-B...
UHF2 Schematics, Board Overlays, and Parts Lists 9.3-1 Chapter 9.3 UHF2 Schematics, Board Overlays, and Parts Lists 9.3.1 Introduction This chapter contains the schematics, board layouts, and parts lists for the XTS 2500/2500 /2250/1500 radios. Use them in conjunction with the theory of operation and the troubleshooting procedures, charts, and waveforms to isolate a problem to the component level.
Page 738
9.3-28 UHF2 Schematics, Board Overlays, and Parts Lists PMLE4427A/ PMLE4427B Main Circuit Board MOTOROLA MOTOROLA MOTOROLA Electrical Parts List ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER MOTOROLA 2113945Y02 CAP,FXD,.1UF,+10%,-10%,16V- C122 2113945C31 CAP,FXD,.1UF,+10%,-10%,50V- C177 2113944M09 CAP,FXD,4.3PF,.1PF+/-,50V-...
Page 739
UHF2 Schematics, Board Overlays, and Parts Lists 9.3-29 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER C218 2113945Y02 CAP,FXD,.1UF,+10%,-10%,16V- C254 2113944A08 CAP CER CHP 2.0PF 50V +/- C401 2113945Y02 CAP,FXD,.1UF,+10%,-10%,16V-...
Page 740
9.3-30 UHF2 Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER C509 2113945B02 CAP CER CHP 10,000PF 25V C617 2113944A32 CAP CER CHP 39.0PF 50V 5%...
Page 741
UHF2 Schematics, Board Overlays, and Parts Lists 9.3-31 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER C802 2113945C20 CAP,FXD,.016UF,+10%,- C860 2113945B02 CAP CER CHP 10,000PF 25V D251 4805656W87...
Page 742
9.3-32 UHF2 Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER 2414017P16 IDCTR,CHIP,18NH,5%,300MA,.7 L205 2414017Q47 IDCTR,FXD,1UH,10%,50MA,.45 L407 2414032B76 IDCTR,WW,4.7UH,5%,330MA,4 Q200 4871674S01 XSTR,BIP GP SS 6OHM,CER,9 Q,1.9GHZ...
Page 743
UHF2 Schematics, Board Overlays, and Parts Lists 9.3-33 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER 0613952Q65 CER CHIP RES 470 OHM 5 0402 R151 0613952H47 CER CHIP RES 82.0 OHM 5...
Page 744
9.3-34 UHF2 Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER R505 0613952R01 CER CHIP RES 10K OHM 5% R610 NOTPLACED R667 0613952Q63...
Page 745
UHF2 Schematics, Board Overlays, and Parts Lists 9.3-35 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER R765 NOTPLACED R796 0613952R66 CER CHIP RES 0.0 +/-0.050 R841 0613952R01 CER CHIP RES 10K OHM 5%...
Page 746
For optimum performance, order replacement diodes, transistors, and circuit ITEM PART DESCRIPTION ITEM PART DESCRIPTION modules by Motorola part number only. NUMBER NUMBER When ordering crystals, specify carrier frequency, crystal frequency, crystal type number, and Motorola part number. Part value notations: VR501...
700/800 MHz Schematics, Board Overlays, and Parts Lists 9.4-1 Chapter 9.4 700/800 MHz Schematics, Board Overlays, and Parts Lists 9.4.1 Introduction This chapter contains the schematics, board layouts, and parts lists for the XTS 2500/2500 /2250/1500 radios. Use them in conjunction with the theory of operation and the troubleshooting procedures, charts, and waveforms to isolate a problem to the component level.
Page 766
9.4-20 700/800 MHz Schematics, Board Overlays, and Parts Lists 8416095H01-A) Main PMLF4040A/ PMLF4040B ( MOTOROLA MOTOROLA MOTOROLA Circuit Board ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION Electrical Parts List NUMBER NUMBER NUMBER 2113946F03 4.7UF C129 2116636H05 0.5PF C163...
Page 767
700/800 MHz Schematics, Board Overlays, and Parts Lists 9.4-21 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER C222 2113944A31 33PF C253 2113944A31 33PF C281 2188881Y09 1.3PF C414 2113945B02...
Page 768
9.4-22 700/800 MHz Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER C443 2113944A85 51PF C555 2113945A01 220PF C635 2113944A32 39PF C710 2113946J03...
Page 769
700/800 MHz Schematics, Board Overlays, and Parts Lists 9.4-23 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER C742 2113945A05 470PF C792 2113946K02 0.1 UF C858 2113945B02 10,000PF D511...
Page 770
9.4-24 700/800 MHz Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER IND FERRITE CHIP 60OHM L102 NOTPLACED L220 2414032F26 22NH MOD,XSTR,FET RF...
Page 771
700/800 MHz Schematics, Board Overlays, and Parts Lists 9.4-25 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER 0613952Q93 6800 OHM 5% 0402 R121 0613952H73 1000 OHM 5% 0603...
Page 772
9.4-26 700/800 MHz Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER R520 0613952R37 330K OHM 5% 0402 R633 NOTPLACED R678 0613952Q49 100 OHM 5 0402...
Page 773
700/800 MHz Schematics, Board Overlays, and Parts Lists 9.4-27 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER R783 0613952R01 10K OHM 5% 0402 R815 0613952R66 0.0 0.050 OHM...
Page 774
For optimum performance, order replacement diodes, transistors, and circuit ITEM PART DESCRIPTION ITEM PART DESCRIPTION modules by Motorola part number only. NUMBER NUMBER When ordering crystals, specify carrier frequency, crystal frequency, crystal type number, and Motorola part number. Part value notations: VR504...
900MHz Schematics, Board Overlays, and Parts Lists 9.5-1 Chapter 9.5 900MHz Schematics, Board Overlays, and Parts Lists 9.5.1 Introduction This chapter contains the schematics, board layouts, and parts lists for the XTS 2500/2500 /2250/1500 radios. Use them in conjunction with the theory of operation and the troubleshooting procedures, charts, and waveforms to isolate a problem to the component level.
Page 793
900MHz Schematics, Board Overlays, and Parts Lists 9.5-19 8416005H01 Main Circuit Board MOTOROLA MOTOROLA MOTOROLA Electrical Parts List ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER MOTOROLA 2113944A08 C106 2113944A77 C125 2113944C37 CAP CER CHP 2.0PF 50V CAP,FXD,11PF,+5%, CAP CER CHP 39.0PF...
Page 794
9.5-20 900MHz Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER C144 2113945A07 C170 NOT PLACED C215 2113945Y02 C233 2113945Y02 CAP CER CHP 680PF 50V CAP,FXD,.1UF,+10%,...
Page 795
900MHz Schematics, Board Overlays, and Parts Lists 9.5-21 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER C251 2113944A32 C274 2113944A32 C298 2185419D06 C417 2113945C31 CAP CER CHP 39.0PF CAP CER CHP 39.0PF...
Page 796
9.5-22 900MHz Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER C437 2113945B02 C504 2113945A11 C555 2113945A01 C619 2113944A32 CAP CER CHP 10,000PF...
Page 797
900MHz Schematics, Board Overlays, and Parts Lists 9.5-23 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER C655 2113944A32 C709 2113944A31 C726 2113944F07 C753 2113944A31 CAP CER CHP 39.0PF CAP CER CHP 33.0PF...
Page 798
9.5-24 900MHz Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER C770 2113945C31 C810 2113946E02 C858 2113945B02 D201 4815011H01 CAP,FXD,.1UF,+10%, CAP CER CHP 1.0UF 16V...
Page 799
900MHz Schematics, Board Overlays, and Parts Lists 9.5-25 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER E401 2480640Z01 FL200 9116848H01 L108 2414017G19 L217 2414032F34 SURFACE MOUNT FLTR SW CAP 3 POLE...
Page 800
9.5-26 900MHz Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER L702 2486085A01 Q698 4813973A81 0613952Q83 R113 NOT PLACED COIL, POWER INDUCTOR XSTR,BIP GP...
Page 801
900MHz Schematics, Board Overlays, and Parts Lists 9.5-27 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER R213 0613952R66 R237 0613952Q58 R293 0613952Q95 R414 0613952R25 CER CHIP RES 0.0...
Page 802
9.5-28 900MHz Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER R535 0613952R01 R622 0613952Q49 R656 0613952R01 R702 0613952R66 CER CHIP RES 10K OHM...
Page 803
900MHz Schematics, Board Overlays, and Parts Lists 9.5-29 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER R740 0613952Q63 R760 0613952Q93 R785 0613952Q49 R806 0613952Q66 CER CHIP RES 390 OHM...
Page 804
9.5-30 900MHz Schematics, Board Overlays, and Parts Lists MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER NUMBER NUMBER R842 0613952R01 SH402 2616518H01 U705 5114000B39 VR505 4809788E21 CER CHIP RES 10K OHM...
Page 805
Notes: MOTOROLA For optimum performance, order replacement diodes, transistors, and circuit ITEM PART DESCRIPTION modules by Motorola part number only. NUMBER When ordering crystals, specify carrier frequency, crystal frequency, crystal type number, and Motorola part number. Part value notations: VR658...
Page 806
9.5-32 900MHz Schematics, Board Overlays, and Parts Lists Notes August 16, 2007 6816985H01-B...
Page 807
Motorola Online users can access our online catalog at https://www.motorola.com/businessonline To register for online access: • Domestic customers: please call 800-814-0601 (U.S. and Canada). • International customers: please go to https://www.motorola.com/businessonline and click on “Sign Up Now.” Mail Orders Send written orders to the following addresses: United States and Canada Orders U.S.
Page 808
Replacement Parts Ordering Telephone Orders Telephone Orders Radio Products and Services Division* (United States and Canada) 7:00 AM to 7:00 PM (Central Standard Time) Monday through Friday (Chicago, U.S.A.) 1-800-422-4210 1-847-538-8023 (International Orders) U.S. Federal Government Markets Division (USFGMD) 1-800-826-1913 Federal Government Parts - Credit Cards Only 8:30 AM to 5:00 PM (Eastern Standard Time) Fax Orders Radio Products and Services Division*...
Page 809
FLASHcodes are only applicable for radios which are upgradeable through the FLASHport process. FLASHport™ A Motorola term that describes the ability of a radio to change memory. Every FLASHport radio contains a FLASHport EEPROM memory chip that can be software written and rewritten to, again and again.
Page 810
Glossary-2 Term Definition Host Code Object code executed by the Host Processor in an ASTRO subscriber radio. The Host is responsible for control-oriented tasks such as decod- ing and responding to user inputs. Host Port Parallel memory mapped interface consisting of eight registers in the DSP.
Page 811
Glossary-3 Term Definition Repeater Remote transmit/receive facility that re-transmits received signals in order to improve communications coverage. RESET Reset line; an input to the microcontroller that restarts execution. RF PA Radio Frequency Power Amplifier. Amplifier having one or more active devices to amplify radio signals.
Page 812
Glossary-4 Term Definition TSOP Thin Small-Outline Package. A type of dynamic random-access memory (DRAM) package that is commonly used in memory applications. UART Universal Asynchronous Receiver Transmitter. A microchip with programming that controls a computer's interface to its attached serial devices.