ASTRO Digital XTL 1500 ® Title Page ™ VHF/UHF Range 1/UHF Range 2/ – 800 MHz Mobile Radio Detailed Service Manual Motorola, Inc. 8000 West Sunrise Boulevard 6815854H01-A Fort Lauderdale, Florida 33322...
No duplication or distribution of this document or any portion thereof shall take place without the express written permission of Motorola. No part of this manual may be reproduced, distributed, or transmitted in any form or by any means, electronic or mechanical, for any purpose without the express written permission of Motorola.
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Document History The following major changes have been implemented in this manual since the previous edition: Edition Description Date 6815854H01-A Initial Release June, 2005 6815854H01-A June 15, 2005...
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Table of Contents 3.13.4.13 Prescaler Feedback ....................3-62 3.14 Controller Section.........................3-62 3.14.1 Daughtercard Module ......................3-64 3.14.2 Controller DC Power Distribution ..................3-65 3.14.3 Reset Circuits ........................3-66 3.14.4 Power-Up/Power-Down Sequence..................3-67 3.14.4.1 Power Turn-On.......................3-68 3.14.4.2 Power Turn-Off.......................3-68 3.14.4.3 Emergency Power-Up/-Down Sequence..............3-68 3.14.5 MCU and DSP System Clocks ..................3-68 3.14.6 RS-232 USB Bus......................3-69 3.14.7 Serial Communications on the External Bus (SB9600) ...........3-70 3.14.8 Serial Peripheral Interface (SPI) Bus ................3-71...
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Table of Contents 700–800 MHz Main Board Troubleshooting.................4-22 4.9.1 Display Flashes “FAIL 001” .....................4-23 4.9.2 FGU Troubleshooting Aids ....................4-24 4.9.3 No or Low Output Power (TX or RX Injection) ..............4-28 4.9.4 No or Low Modulation .....................4-28 4.9.5 Troubleshooting the Back-End ..................4-28 4.10 Standard Bias Tables ........................4-28 4.11 Receiver Front-End (RXFE) ......................4-32 4.11.1 VHF (136–174 MHz) Band ....................4-32...
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Table of Contents 5.6.21 Low or No RX Injection Signal (380–470 MHz and 450–520 MHz) ........5-32 5.6.22 Low or No TX Injection Signal (380–470 MHz and 450–520 MHz) .........5-33 5.6.23 No TX Audio (380–470 MHz and 450–520 MHz) ............5-34 5.6.24 TX or RX VCO Unlock (Fail 001) (380–470 MHz and 450–520 MHz)—Part 1 of 2 ..5-35 5.6.25 TX or RX VCO Unlock (Fail 001) (380–470 MHz and 450–520 MHz)—Part 2 of 2 ..5-36 5.6.26 RF Power Amplifier (RFPA)—No or Low TX Power Output (380–470 MHz and 450–520 MHz)—Part 1 of 5.....................5-37...
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Flex Cable Pin-Out Lists .............8-1 List of Flex Cables..........................8-1 Flex Cables ............................8-1 Appendix A Replacement Parts Ordering ..........A-1 Basic Ordering Information......................A-1 Motorola Online ..........................A-1 Mail Orders............................ A-1 Telephone Orders ......................... A-1 Fax Orders ............................ A-2 Parts Identification......................... A-2 Product Customer Service ......................
List of Figures xiii List of Figures Figure 2-1. VIP Dash-Mount Configuration....................2-4 Figure 3-1. XTL 1500 Control Head Board Sections — Side 1..............3-1 Figure 3-2. XTL 1500 Control Head Board Sections — Side 2..............3-2 Figure 3-3. Control Head Controller Block ....................3-3 Figure 3-4.
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List of Figures Figure 3-50. Boot RX and Boot TX Data Lines ..................3-75 Figure 4-1. Frequency Generator Unit DC Power Supply Distribution (VHF) ..........4-8 Figure 4-2. Frequency Generation Unit Block Diagram (VHF) ..............4-9 Figure 4-3. Waveform Representation During Programming of the LV Frac-N IC (U3751) ....4-11 Figure 4-4.
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List of Figures Figure 5-36. RX Back-End—Poor SINAD or No Audio (700–800 MHz)—Part 1 of 3......5-47 Figure 5-37. RX Back-End—Poor SINAD or No Audio (700–800 MHz)—Part 2 of 3......5-48 Figure 5-38. RX Back-End—Poor SINAD or No Audio (700–800 MHz)—Part 3 of 3......5-49 Figure 5-39.
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List of Figures Figure 7-41. HUD4022A USB/RS232/SB9600 VIP Input/Output Schematic...........7-49 Figure 7-42. HUD4022A Control-Head Connector Schematic ..............7-50 Figure 7-43. HUD4022A Interface Connector Schematic ................7-51 Figure 7-44. HUD4022A Main Board Layout—Side 1 Top ..............7-52 Figure 7-45. HUD4022A Main Board Layout—Side 1 Bottom ..............7-53 Figure 7-46.
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List of Figures xvii Figure 7-95. HUE4040A Rear Accessory Connector Schematic............7-123 Figure 7-96. HUE4040A Secure Power Supply Schematic ..............7-124 Figure 7-97. HUE4040A Secure USB/RS232/SB9600 Schematic ............7-125 Figure 7-98. HUE4040A Secure SB9600 Schematic ................7-126 Figure 7-99. HUE4040A Secure Control-Head Connector Schematic (Sheet 1 of 2)......7-127 Figure 7-100.HUE4040A Secure Control-Head Connector Schematic (Sheet 2 of 2)......7-128 Figure 7-101.HUE4040A Secure Interface Connector Schematic............7-129 Figure 7-102.HUE4040A Main Board Layout—Side 1 Top ..............7-130...
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List of Tables Related Publications ASTRO Digital XTL 1500 Mobile Radio Installation Manual............6815851H01 ASTRO Digital XTL 1500 VHF/UHF Range 1/UHF Range 2/700-800 MHz Mobile Radio Basic Service Manual........................ 6815853H01 CPS Programming Installation Guide..................... 6881095C44 System 9000 Direct Entry Keyboard Instruction Manual ............
Product Accessories One (1) Year Motorola, at its option, will at no charge either repair the Product (with new or reconditioned parts), replace it (with a new or reconditioned Product), or refund the purchase price of the Product during the warranty period provided it is returned in accordance with the terms of this warranty. Replaced parts or boards are warranted for the balance of the original applicable warranty period.
Warranty service will be provided by Motorola through one of its authorized warranty service locations. If you first contact the company which sold you the Product, it can facilitate your obtaining warranty service. You can also call Motorola at 1-888-567-7347 US/Canada.
A. that MOTOROLA will be notified promptly in writing by such purchaser of any notice of such claim; B. that MOTOROLA will have sole control of the defense of such suit and all negotiations for its settlement or compromise; and C.
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xxiv Commercial Warranty Notes June 15, 2005 6815854H01-A...
Model Numbering, Charts, and Specifications Model Numbering, Charts, and Specifications Mobile Radio Model Numbering Scheme Typical Model Number: Position: 12 13 Position 1 - Type of Unit Positions 13 - 16 M = Mobile SP Model Suffix L = Table Top Station Position 12 - Positions 2 &...
Model Numbering, Charts, and Specifications ASTRO XTL 1500 VHF 10-50 Watt Model Chart M28KSS9PW1AN Option Description W20BX ALT: Keypad Microphone W382AH ALT: Control Station Palm Microphone G798AA ADD: Control Station Base Mount G91AA ADD: Control Station Power Supply W470AR...
Model Numbering, Charts, and Specifications xxvii ASTRO XTL 1500 UHF Range 1 10-40 Watt Model Chart – M28QSS9PW1AN 380 470 MHz Option Description W20BX ALT: Keypad Microphone W382AH ALT: Control Station Palm Microphone G798AA ADD: Control Station Base Mount G91AA...
Model Numbering, Charts, and Specifications ASTRO XTL 1500 UHF Range 2 10-45 Watt Model Chart – M28SSS9PW1AN 450 520 MHz Option Description W20BX ALT: Keypad Microphone W382AH ALT: Control Station Palm Microphone G798AA ADD: Control Station Base Mount G91AA...
Model Numbering, Charts, and Specifications xxix ASTRO XTL 1500 700-800 MHz 10-35 Watt Model Chart – M28URS9PW1AN 764 870 MHz Option Description W20BX ALT: Keypad Microphone W382AH ALT: Control Station Palm Microphone G798AA ADD: Control Station Base Mount G91AA ADD: Control Station Power Supply...
Model Numbering, Charts, and Specifications VHF Radio Specifications GENERAL RECEIVER TRANSMITTER FCC Designations: AZ492FT3806 Frequency Range: Frequency Range: Range 1: 136–174 MHz Range 1: 136–174 MHz Temperature Range: Channel Spacing: 12.5 kHz/30 kHz Rated Output Power: Operating: –30°C to +60°C Low-Power Radio: 25 Watt Storage:...
Model Numbering, Charts, and Specifications xxxi UHF Range 1 Radio Specifications GENERAL RECEIVER TRANSMITTER FCC Designations: AZ492FT4862 Frequency Range: Frequency Range: Range 1: 380–470 MHz Range 1: 380–470 MHz Temperature Range: Channel Spacing: 12.5 kHz/20 kHz/25 kHz Rated Output Power: Operating: –30°C to +60°C Low-Power Radio:...
xxxii Model Numbering, Charts, and Specifications UHF Range 2 Radio Specifications GENERAL RECEIVER TRANSMITTER FCC Designations: AZ492FT4867 Frequency Range: Frequency Range: Range 2: 450–520 MHz Range 2: 450–520 MHz Temperature Range: Operating: –30°C to +60°C Channel Spacing: 12.5 kHz/20 kHz/25 kHz Rated Output Power: Storage: –51°C to +85°C...
Use this manual in conjunction with the ASTRO Digital XTL 1500 VHF/UHF Range 1/UHF Range 2/ 700–800 MHz Mobile Radio Basic Service Manual (Motorola part number 6815854H01), which helps in troubleshooting a problem to a particular board.
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Introduction: General Included in other areas of this manual are functional block diagrams, detailed theory of operation, troubleshooting charts and waveforms, schematics, and parts list. You should be familiar with these sections to aid in deducing the problem circuit. Also included are component location diagrams to aid in locating individual circuit components, as well as IC diagrams, which identify some convenient probe points.
Chapter 2 Product Overview Introduction The ASTRO Digital XTL 1500 radio is a dual-mode (trunked/conventional), microcontroller-based transceiver incorporating a Digital Signal Processor (DSP). The microcontroller handles the general radio control, monitors status, and processes commands input from the keypad or other user controls.
Product Overview: Control-Head Assembly Control-Head Assembly This section discusses the basic operation and components of the control-head assembly. 2.3.1 Controller The controller consists of three main components, namely the OMAP Applications Processor, Flash and SDRAM. The Applications Processor is the main controller of the control head. Its main function is to receive inputs from the user and relays the command to the transceiver microprocessor for processing via Serial Synchronous Interface (SSI) link.
Product Overview: Control-Head Assembly 2.3.3.2 Keypad, Volume and Frequency Knob The control head assembly processes all menu button inputs and visual indicators through the application processor. The buttons are programmable to allow different modes of operation through the CPS. All buttons are backlit to allow operation in low light. The volume knob allows a linear step of the volume and integrates the on/off function.
Product Overview: Control-Head Assembly 2.3.4 Vehicle Interface Ports The Vehicle Interface Ports (VIPs) allow the control head to activate external circuits and receive inputs from the outside world. In general, VIP outputs are used for relay control. See the cable kit section for typical connections of VIP output relays.
Product Overview: Receiver Section Receiver Section This section discusses the receiver section components and basic operation for each band. 2.4.1 VHF Band Radios The VHF (136–174 MHz) receiver consists of a front-end and a back-end sections. 2.4.1.1 Front-End Section The primary function of the receiver front-end is to optimize image rejection and selectivity while providing the first conversion.
Product Overview: Transmitter Section The back-end is primarily the ABACUS III digital IC. The ABACUS III IC uses a variable-bandwidth bandpass sigma-delta architecture. It is capable of down-converting analog as well as digital RF protocols into a baseband signal, which is then transmitted over the Synchronous Serial Interface (SSI) bus to the DSP and microprocessor.
Product Overview: Frequency Generation Unit 2.5.3 700–800 MHz Radios The 700–800 MHz transmitter consists of an RF power amplifier (RFPA), output network (ON), and power control. 2.5.3.1 RFPA The RFPA is a three-stage, discrete-LDMOS transistor amplifier consisting of the following stages: first, driver, and final.
Product Overview: Frequency Generation Unit • Associated circuitry The reference oscillator IC provides a frequency standard to the Fractional-N synthesizer IC, the ABACUS III digital back-end IC, and the controller section. The synthesizer turns on one of the four VCOs (determined by mode and band of operation) and tunes it to the receiver (RX) local oscillator (LO) or transmitter (TX) carrier frequency.
Product Overview: Controller Section The voltage-controlled oscillator (VCO) module employs a Colpitts configuration with two bipolar stages in a common-base, common-collector configuration. The LC tank circuit's capacitive portion consists of a varactor diode, coupling capacitor, and a laser-trimmed capacitor for frequency adjustment.
2-10 Product Overview: Controller Section 2.7.2 Digital (ASTRO) Mode of Operation In the ASTRO mode (digital mode) of operation, the transmitted or received signal is limited to a discrete set of deviation levels, instead of continuously varying. The receiver handles an ASTRO- mode signal identically to an analog-mode signal up to the point where the DSP decodes the received data.
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Product Overview: Controller Section 2-11 The DSP section of microprocessor performs signaling, voice encoding/decoding, audio filtering, microphone gain and tuning, Private-Line/Digital Private Line (PL/DPL) encode, and alert-tone generation. It processes all baseband audio signals, providing pre-emphasis and signaling/filtering of the digital microphone audio data, as well as other transmitted signals. It also performs de-emphasis and decoding of received digital speaker audio and other received signals.
Chapter 3 Theory of Operation Control Head Board This section provides a detailed circuit description of the XTL 1500 radio control head board for VHF/ UHF Range 1/UHF Range 2/700–800 MHz models. The control head board contains the following major sections: •...
Theory of Operation: Power Management The OMAP IC also requires a 32.768 kHz square-wave clock, provided at the P13 pin. This clock is generated by a 32.768 kHz crystal (Y1000), with supporting circuitry for oscillation. This clock is utilized only for the OMAP IC, and is used for reset capability and other OMAP IC functions. Note that the rise/fall time of this clock is optimum at 20ns or less.
Theory of Operation: Power Management 3.4.1 Power Distribution The control head houses 7 different power levels for smooth operation of the complex system of XTL1500. They are A+ & SW_B+ at 13.8V (nominal battery terminal voltage), UNSW_VCC (3.0V), SW_5V (5.0V), 1.55V, 1.88V, 2.8V and 3.3V. 13.8V DC From Brick Q2202...
Theory of Operation: Power Management Please refer to “Chapter 7. Schematics, Component Location Diagrams, and Parts Lists”, for detailed circuitry and power distribution information and the various voltages used by the ICs on the main board are shown in Table 3-1.
Table 3-2. ATTiny13 Programming Kit Part Number Description Application 8416228H01 AVR ATTiny13 Programming Flex To be used with XTL 1500 control head to reprogram (Motorola Part the ATTiny13. Number) ATAVRISP AVR ISP Programmer Device used to program ATMEL range of ATTiny (ATMEL Part Microcontrollers.
GCAI compatible accessories when migrating to new radio platforms. XTL1500 is one of the first Motorola products to implement this standard and is GCAI Class 0 compliant. The accessory interface port (J7000) incorporates USB Host and Client, 2-wire RS232 UART transmission, GPIOs and One Wire device detect capability.
Theory of Operation: Main Board All GCAI Outputs are configured to be at nominal 3.3V High with 15KΩ pull-ups on GPIO lines and 2.2KΩ pullup on ONE_WIRE line while UART is pullup with 100KΩ. USB is configured to comply with international USB standard. The one-wire detection will provide the radio with information on what accessory has been plugged in and will configure the radio correctly to allow smooth operation of smart accessories such as the keypad microphone and the RS232 programming cable.
Theory of Operation: Main Board Major Sections 3-11 3.8.2 UHF Range 1 (380-470 MHz) and UHF Range 2 (450-520 MHz) Band The illustrations (Figure 3-8 on page 3-11 Figure 3-9 on page 3-12) and their accompanying tables (Table 3-5 on page 3-11 Table 3-6 on page 3-12) identify the location of the major sections of the main board.
3-12 Theory of Operation: Main Board Major Sections Figure 3-9. XTL 1500 Main Board Sections (UHF Range 1 Mid Power and UHF Range 2)—Side 2 Table 3-6. XTL 1500 Main Board Sections (UHF Range 1 Mid Power and UHF Range 2)—Side 2 RX Back-End TX Power Control IF Filter...
Theory of Operation: Main Board Major Sections 3-13 3.8.3 700–800 MHz Band The illustrations (Figure 3-10 Figure 3-11 on page 3-14) and their accompanying tables (Table 3- Table 3-8 on page 3-14) identify the location of the major sections of the main board. MAEPF-27876-O Figure 3-10.
Theory of Operation: Radio Power Distribution 3-15 Radio Power Distribution This section provides information on DC power distribution in XTL 1500 radios. In the XTL 1500 radio, power is distributed to two boards: the main board and control head. Power for the radio is supplied by the vehicle’s 12-V battery. When using a desktop adapter unit, an external DC power supply can be connected to replace the vehicle’s battery source.
Theory of Operation: Receiver Front-End 3-17 - Low-noise IF amplifier - ABACUS III digital back-end IC RF Input Front-end Ant. SW. Pre Mode Harm. FLT Att. LNA 1 BPF 1 LNA 2 BPF 2 Std Mode Back-end Mixer 2 Pole 2 Pole Crystal Crystal...
3-18 Theory of Operation: Receiver Front-End 3.10.1.5 Mixer (D3258) The received signal is down-converted by a double-balanced mixer to an Intermediate Frequency (IF) of 109.65 MHz. The mixer is designed to provide low conversion loss and high intermodulation performance. The injection buffer provides a 20 dBm LO signal to the mixer. High-side injection is used.
Theory of Operation: Receiver Front-End 3-19 3.10.2.1 Highpass Filter and First Low-Noise Amplifier The highpass filter and first low-noise amplifier (LNA) (11 dB gain) can be switched in and out of the signal path by diode switches. When switched into the signal path, the sensitivity of the radio is improved at the cost of degraded intermodulation performance.
3-20 Theory of Operation: Receiver Front-End 3.10.3 UHF Range 2 (450–520 MHz) Band The receiver circuits primary duties are to detect, filter, amplify, and demodulate RF signals in the presence of strong interfering noise and unintended signals. The receiver (see Figure 3-16) is broken down into the following blocks:...
Theory of Operation: Receiver Front-End 3-21 3.10.3.2 Preselector Filter The front-end operates in the 450 to 520 MHz band. The front-end's primary function is to optimize half IF rejection, image rejection, and selectivity while providing the first conversion. The front-end uses a varactor-tuned filter that is tuned by the controller.
3-22 Theory of Operation: Receiver Front-End 3.10.4 700–800 MHz Band The receiver circuits primary duties are to detect, filter, amplify, and demodulate RF signals in the presence of strong interfering noise and unintended signals. The receiver (see Figure 3-17) is broken down into the following blocks: •...
Theory of Operation: Receiver Back-End 3-23 3.10.4.3 Mixer (U6251) The monolithic, passive mixer IC down-converts the received signal to an Intermediate Frequency (IF) of 73.35 MHz. The mixer is designed to provide low conversion loss (< 7.0) and high intermodulation performance. To improve the performance of the mixer in both bands, a shunt 9.1 pF capacitor (C6297) along with a resistive PI network (R6278, R6280, R6281) is designed at the IF port (pin 5) of the mixer.
3-24 Theory of Operation: Receiver Back-End AD9874 DAC AGC -16dB Decimation IFIN Formatting/SSI DOUTA Filter DOUTB CLKOUT = 13-26MHz FREF Control Logic Sample Clock Voltage Synth. Reference Synthesizer LO VCO and CLK VCO and Loop Filter Loop Filter MAEPF-27817-O Figure 3-18. ABACUS III (AD9874) IC Functional Block Diagram from Data Sheet (VHF) 3.11.1.2.1 Second Local Oscillator The ABACUS III IC local oscillator (LO) synthesizer controls the second LO.
Theory of Operation: Receiver Back-End 3-25 3.11.2.1 Intermediate Frequency (IF) Filter The XTL 1500 radio uses two leadless, surface-mount, two-pole, third-overtone, quartz crystal filters (Y5400, Y5401) separated by a 20 dB gain IF amplifier. The filter is centered at 109.65 MHz. This narrow-bandpass filter gives the radio part of its adjacent-channel and alternate-channel rejection performance.
3-26 Theory of Operation: Receiver Back-End 3.11.2.2.1 Second Local Oscillator (LO) The ABACUS III IC local oscillator (LO) synthesizer controls the second LO. Signal FREF is the 16.8 MHz reference from the frequency generation unit (FGU). The second LO frequency is 107.4 MHz by default, or 111.9 MHz in special cases as necessary to avoid radio self-quieters.
3-28 Theory of Operation: Receiver Back-End 3.11.4.1 Intermediate Frequency (IF) Filter The XTL 1500 radio uses two leadless, surface-mount, two-pole, third-overtone, quartz crystal filters (B6350, B6351) separated by a 20 dB gain IF amplifier. The filter is centered at 73.35 MHz. This narrow-bandpass filter gives the radio its adjacent-channel and alternate-channel rejection performance.
Theory of Operation: Transmitter 3-29 3.11.4.2.1 Second Local Oscillator (LO) The ABACUS III IC local oscillator (LO) synthesizer controls the second LO. Signal FREF is the 16.8 MHz reference from the frequency generation unit (FGU). The second LO frequency is 75.6 MHz by default, or 71.1 MHz in special cases as necessary to avoid radio self-quieters.
3-30 Theory of Operation: Transmitter First Stage The RFPA first stage provides gain that is determined by the control voltage, RFPA_CNTRL. This control voltage is generated in the power control section and is a function of the final-stage output power, temperature, and current, as well as the control and A+ voltage levels. See “3.12.1.3.
Theory of Operation: Transmitter 3-31 Antenna Switch The antenna switch functions in two modes, which are determined by the presence of K9.1V. The K9.1V switch bias is applied via L3700, L3731-2, and C3702. When K9.1V is present, the switch is in TX mode.
Theory of Operation: Transmitter 3-33 Protection Mechanisms Final-stage temperature is sensed in the RFPA resulting in VTEMP, which is proportional to temperature. VTEMP is compared against a reference voltage TEMP_1 (U0959, pin 9) via U0957-1. When VTEMP exceeds TEMP_1, the U0957-1, pin 1, voltage increases and forward biases one of the D0951 diodes, which cuts back power.
3-34 Theory of Operation: Transmitter First Stage The RFPA first stage provides gain that is determined by the control voltage, RFPA_CNTRL. This control voltage is generated in the power control section and is a function of the final-stage output power, temperature, and current, as well as the control and A+ voltage levels. See “3.12.2.3.
Theory of Operation: Transmitter 3-35 Antenna Switch The antenna switch functions in two modes determined by the presence of K9.1V. The K9.1V switch bias is applied via L5701and C5702. When K9.1V is present, the switch is in TX mode. D5701, D5702 and D5703 are forward biased forming a low-loss path from the RFPA final stage to the harmonic filter and a 20 dB isolation path between the RFPA final stage and the RX front-end.
Theory of Operation: Transmitter 3-37 Protection Mechanisms Final-stage temperature is sensed in the RFPA resulting in VTEMP, which is proportional to temperature. VTEMP is compared against a reference voltage TEMP_1 (U0959, pin 9) via U0957-1. When VTEMP exceeds TEMP_1, the U0957-1, pin 1, voltage increases and forward biases one of the D0951 diodes, which cuts back power.
3-38 Theory of Operation: Transmitter The 0.5 mW TX_INJ signal is routed to the U5501 first stage device (Pin 16, RFIN) via C5508 to an integrated, wide-band input match. U5501 is a two-stage LDMOS device with a bandpass interstage match consisting of L5503, C5507, and C5509 routed between VD1 (pin 14) and G2 (pin 11). L5502 and L5505 provide the K9.1V drain bias voltage for the first and second stages to VD1 (pin 14) and RFOUT1/2 (pins 6 and 7), respectively.
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Theory of Operation: Transmitter 3-39 Antenna Switch The antenna switch functions in two modes determined by the presence of K9.1V. The K9.1V switch bias is applied via L5701and C5702. When K9.1V is present, the switch is in TX mode. D5701, D5702 and D5703 are forward biased forming a low-loss path from the RFPA final stage to the harmonic filter and a 20 dB isolation path between the RFPA final stage and the RX front-end.
Theory of Operation: Transmitter 3-41 Protection Mechanisms Final-stage temperature is sensed in the RFPA resulting in VTEMP, which is proportional to temperature. VTEMP is compared against a reference voltage TEMP_1 (U0959, pin 9) via U0957-1. When VTEMP exceeds TEMP_1, the U0957-1, pin 1, voltage increases and forward biases one of the D0951 diodes, which cuts back power.
3-42 Theory of Operation: Transmitter First Stage The RFPA first stage provides gain that is determined by the control voltage, RFPA_CNTRL. This control voltage is generated in the power control section and is a function of the final-stage output power, temperature, and current, as well as the control and A+ voltage levels. See “3.12.4.1.3.
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Theory of Operation: Transmitter 3-43 Antenna Switch The antenna switch functions in two modes, which are determined by the presence of K9.1V. The K9.1V switch bias is applied via L6700, L6702, and C6700. When K9.1V is present, the switch is in TX mode.
Theory of Operation: Frequency Generation Unit (FGU) 3-45 Protection Mechanisms Final-stage temperature is sensed in the RFPA resulting in VTEMP, which is proportional to temperature. VTEMP is compared against a reference voltage TEMP_1 (U0959, pin 9) via U0957-1. When VTEMP exceeds TEMP_1, the U0957-1, pin 1, voltage increases and forward biases one of the D0951 diodes, which cuts back power.
3-46 Theory of Operation: Frequency Generation Unit (FGU) 3.0V 3.0V 16.8MHz Reference to Controller and Receiver ack End U3752 5.0V VOLTAGE 16.8MHz OSC MULTIPLIER 3.0V 8.2V D3758 and D3757 8.2V SW 3.0V 8.2V SW Regulator 3.0V Keyed U3750 Tx VCOs VMULT3 9.1V Q3753...
Theory of Operation: Frequency Generation Unit (FGU) 3-47 U3751 is a mixed-mode IC containing digital and analog circuits. Separate power supply inputs are used for the various functional blocks on the IC. Inductors L3757 and L3756 provide isolation between supply pin 20 (AVDD - analog supply input) and pin 36 (DVDD - digital supply input) connected to F3.0v.
3-48 Theory of Operation: Frequency Generation Unit (FGU) 3.13.1.6 Charge Pump Bias External circuitry connected to pin 39 (Bias 2) and pin 40 (Bias 1) of U3751 determine the current that is applied to the charge-pump circuitry. During receive mode, resistors R3778, R3763, and R3758 set the current supplied to pin 40 (Bias 1).
Theory of Operation: Frequency Generation Unit (FGU) 3-49 3.13.1.10 Receiver Injection The receiver (RX) injection string is a three-stage amplifier that supplies the RX feedback signal to the FGU synthesizer loop and supplies the first local oscillator (LO) signal to the RX front-end mixer. The RX VCO output is attenuated 3 dB via resistors R3825 through R3827 to increase isolation.
3-50 Theory of Operation: Frequency Generation Unit (FGU) 3.0V 3.0V 16.8MHz Reference to Controller and Receiver Back End U5751 5.0V 8.2V VOLTAGE 16.8MHz OSC MULTIPLIER 8.2V SW 3.0V D5750 and 8.2V SW D5751 Keyed 3.0V 9.1V Regulator 3.0V Q5825 U5750 VMULT3 Q5706 VMULT4...
Theory of Operation: Frequency Generation Unit (FGU) 3-51 All programmable variables on the synthesizer IC, such as the synthesizer frequency; reference- oscillator warping; adapt-timer duration; modulation-attenuator setting; and auxiliary-control outputs, which select one of five voltage-controlled oscillators, can be programmed through a serial peripheral interface (SPI).
3-52 Theory of Operation: Frequency Generation Unit (FGU) 3.13.2.6 Charge Pump Bias External circuitry connected to pin 39 (Bias 2) and pin 40 (Bias 1) of U5752 determine the current that is applied to the charge-pump circuitry. During receive mode, resistors R5754, R5759, and R5765 set the current supplied to pin 40 (Bias 1).
Theory of Operation: Frequency Generation Unit (FGU) 3-53 3.13.2.11 Transmitter VCOs Transmitter frequencies are generated from two VCOs, Q5825 and Q5826. • Q5825 supplies frequencies in the range 380 MHz up to (but not including) 425 MHz. • Q5826 supplies frequencies in the range from 425 MHz to 470 MHz. 3.13.2.12 Receiver VCOs Receiver first local-oscillator frequencies are generated from three VCOs, Q5901, Q5903 and Q5905.
3-54 Theory of Operation: Frequency Generation Unit (FGU) 3.13.3 UHF Range 2 (450–520 MHz) Band The FGU (Figure 3-38) provides the XTL 1500 radio with a 16.8 MHz reference frequency, receiver 1st local oscillator, and a modulated transmitter RF carrier that is further amplified by the power amplifier section of the radio.
Theory of Operation: Frequency Generation Unit (FGU) 3-55 3.13.3.1 Reference Oscillator The radio's frequency stability and accuracy is derived from the 16.8 MHz reference oscillator (Y5750). The 16.8 MHz reference oscillator circuitry provides a 16.8 MHz reference to the LV Frac-N (U5752), receiver back-end IC (U5002), and the controller section of the XTL 1500 radio.
3-56 Theory of Operation: Frequency Generation Unit (FGU) 3.13.3.4 Superfilter The superfilter is an active filter that provides a low-noise supply for the VCOs, receiver and transmitter injection amplifiers. Regulator U0950, located in the controller section, supplies 9.3 Vdc to the FGU section thru the filtering network consisting of L5750, C5751, C5753, and C5755. This voltage is applied to pin 30 (SFIN) of U5752 and the emitter of Q5752.
Theory of Operation: Frequency Generation Unit (FGU) 3-57 3.13.3.9 Transmitter Injection The transmit (TX) injection string consists of three amplifier stages (Q5828, Q5829, and Q5501) whose main purpose is to maintain a constant output to drive the RF power amplifier chain and supply the TX feedback signal to the FGU synthesizer loop.
3-58 Theory of Operation: Frequency Generation Unit (FGU) 3.13.3.13 Prescaler Feedback RF feedback for the synthesizer loop is provided by prescaler amplifier Q5755. Feedback from both the transmitter and receiver injection strings are coupled to this amplifier through capacitors C5863 and C5957.
Theory of Operation: Frequency Generation Unit (FGU) 3-59 3.13.4.1 Reference Oscillator The radio's frequency stability and accuracy is derived from the 16.8 MHz reference oscillator (Y6750). The 16.8 MHz reference oscillator circuitry provides a 16.8 MHz reference to the LV Frac-N (U6751), receiver back-end IC (U6000), and the controller section of the XTL 1500 radio.
3-60 Theory of Operation: Frequency Generation Unit (FGU) 3.13.4.4 Superfilter The superfilter is an active filter that provides a low-noise supply for the VCOs, receiver and transmitter injection amplifiers. Regulator U0950, located in the controller section, supplies 9.3 Vdc to the FGU section thru the filtering network consisting of L6755, C6806, C6807, and C6818. This voltage is applied to pin 30 (SFIN) of U6751 and the emitter of Q6759.
Theory of Operation: Frequency Generation Unit (FGU) 3-61 3.13.4.9 Transmitter Injection The transmit (TX) injection string consists of three amplifier stages (Q6764, Q6765, and Q6766) whose main purpose is to maintain a constant output to drive the RF power amplifier and supply the TX feedback signal to the FGU synthesizer loop.
3-62 Theory of Operation: Controller Section 3.13.4.12 Receiver VCOs Receiver first local-oscillator frequencies are generated from two VCOs in U6755. U6755 is not serviceable and should be replaced if determined to be non-functional. For receiver frequencies in the range of 764 to 776 MHz, high-side, first local-oscillator injection of 837.35 to 849.35 MHz (Fc + 73.35 MHz) is generated when Aux3 (pin 2) of U6751 is active high (3.0 Vdc).
3-64 Theory of Operation: Controller Section In receive mode, the ABACUS III IC provides data samples directly to the DSP for processing. In transmit mode, the DAC provides a serial D/A converter. The data generated by the DSP is filtered and reconstructed as an analog signal to present a modulation signal to the VCO (voltage-controlled oscillator) at the LV Frac-N synthesizer.
Theory of Operation: Controller Section 3-65 3.14.2 Controller DC Power Distribution Figure 3-44 illustrates the controller DC power distribution circuitry. The A+ power for the radio is derived from the 12-V battery, which is applied to the main board through connector J0950. This A+ voltage is routed to the control-head connector, J0401, pins 19 and 21, to the control head.
3-66 Theory of Operation: Controller Section The various voltages used by the ICs on the main board are shown in Table 3-11. Table 3-11. Integrated Circuits Voltages 9.3 V_T Integrated Circuit UNSW5V SW 5V 3.0 V 2.85 V 1.85 V 1.55 V Patriot U100...
3-68 Theory of Operation: Controller Section 3.14.4.1 Power Turn-On When SW_B+ is active at turn-on time, the voltage turns on Q0501, Q0504, and Q0505, which then turns on SW_A+ via the power FET Q0503. SW_A+ then supplies all radio power (9.3-V regulators and controller regulators).
Theory of Operation: Controller Section 3-69 3.14.6 RS-232 USB Bus The XTL 1500 microcontroller in the Patriot IC (U100) has two internal UARTS that can be configured for RS-232 data communication: UARTA and UARTB (Figure 3-46). PATRIOT U100 UART A UART B SB9600 SWITCH...
TX to RX and RTS to CTS 3.14.7 Serial Communications on the External Bus (SB9600) The SB9600 bus is an asynchronous serial communication bus using a Motorola-proprietary protocol. It provides a means for the microcontroller within the Patriot IC (U100) to communicate with other hardware devices.
Theory of Operation: Controller Section 3-71 3.14.8 Serial Peripheral Interface (SPI) Bus The microcontroller (U100) utilizes an SPI bus for configuring and operating specific ICs in the controller and RF sections of the radio. The SPI bus is a synchronous serial bus made up of four lines (see Figure 3-47 on page 3-71).
3-72 Theory of Operation: Controller Section • LV Frac-N (U6751) (microcontroller only writes to IC): scales the frequency from the VCO, control RX, and TX feedback loops • EPOT (U0206) (microcontroller only writes to IC): controls the 32 steps of audio volume (vol=0: low to 15: high) that is routed to audio PA 3.14.9 Receive Audio The controller processes all received signals digitally.
Theory of Operation: Controller Section 3-73 The CODEC D/A analog output signal is routed to the RX_FILT_AUDIO line at both J0401 and J0402/J2 for legacy accessories and special applications products at an amplitude of 100 mV per kHz of deviation. The signal amplitude is independent of volume setting. This output is also routed to a multiplex switch, U0210, which is one source of audio to the audio PA speaker output.
3-74 Theory of Operation: Controller Section The multiplexer allows TX modulation audio to be routed from one of 3 possible sources: mobile microphone (MIC_HI), AUX_MIC (audio sourced from the J2 rear accessory connector in motorcycle configuration), or AUX_TX (audio from a VRS). The resulting audio source is then sent to a two- stage, programmable gain/attenuation circuit comprised of U0201 and U0202.
(U102) located on the daughtercard and the FLASH ROM (U1300) located on the control head. Reflashing is accomplished by using a programming cable (HKN6183) and the Motorola Customer Programming Software (CPS) FLASHport tool. The technique to flash the radio is the same as when using CPS or the TUNER software to change features on your radio.
HKN6160 • Two-wire RS-232 through an HKN6183 programming cable at the control head’s 10-pin accessory port For a list of all available programming cables, refer to the table below. Table 3-14. Programming Cables Motorola Description Application Part Number HKN6183 Programming Flash Cable...
When damaged parts are replaced, identical parts should be used. If the identical replacement component is not locally available, check the parts list for the proper Motorola part number and order the component from the nearest Motorola Communications Parts facility.
The daughtercard module is tested prior to placement on the main board. However, this is done with proprietary software that is not available outside Motorola. Also, because of the high density of the solder balls, the pins of the three ICs are not exposed to the outside world for test probing.
Troubleshooting Procedures: Voltage Measurement and Signal Tracing Voltage Measurement and Signal Tracing In most situations, the problem circuit may be identified using a DC voltmeter, RF millivoltmeter, and oscilloscope (preferably with 100 MHz bandwidth or more). The “Recommended Test Equipment, Service Aids, and Tools”...
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Troubleshooting Procedures: Power-Up Self-Check Errors Table 4-1. Power-Up Self-Check Error Codes (Continued) Error Code Description Error Type Corrective Action FAIL 01/88 External RAM Error FATAL • Turn the radio off, then on. • Hard bootstrap and flash the firmware. • Replace the daughtercard. FAIL 01/90 General Hardware FATAL...
Troubleshooting Procedures: VHF (136–174 MHz) Band Main Board Troubleshooting 2. To determine if the "out-of-lock" is frequency or VCO dependant, place the unit into RF TEST Mode, as described in the ASTRO Digital XTL 1500 VHF/UHF Range 1/UHF Range 2/700– 800 MHz Mobile Radio Basic Service Manual (6815853H01) and step through each test channel.
Troubleshooting Procedures: VHF (136–174 MHz) Band Main Board Troubleshooting 4.6.3 Out-of-Lock Condition The probable cause of an out-of-lock condition is a failure in the synthesizer circuit. If the voltages on the AUX 1*, AUX 2*, AUX3*, and AUX4* lines do not conform to required output frequency in Table 4-5, troubleshoot the synthesizer.
Troubleshooting Procedures: VHF (136–174 MHz) Band Main Board Troubleshooting 3.0V 3.0V 16.8MHz Reference to Controller and Receiver ack End U3752 5.0V VOLTAGE 16.8MHz OSC MULTIPLIER 3.0V 8.2V D3758 and D3757 8.2V SW 3.0V 8.2V SW Regulator 3.0V Keyed U3750 Tx VCOs VMULT3 9.1V Q3753...
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4-10 Troubleshooting Procedures: VHF (136–174 MHz) Band Main Board Troubleshooting Table 4-6. LV Frac-N U3751 Pin Descriptions (VHF) (Continued) Pin No. Pin Name Description 3.0-V supply for reference oscillator warp circuitry VMULT2 Not used VMULT1 Not used INDMULT Not used —...
Troubleshooting Procedures: UHF Range 1 (380–470 MHz) Band Main Board Troubleshooting 4-11 Pin 9 (Chip Select) Pin 7 (Data) Pin 8 (Clock) MAEPF-27805-O Figure 4-3. Waveform Representation During Programming of the LV Frac-N IC (U3751) NOTE: The above waveforms are representations only. 4.6.5 No or Low Output Power (TX or RX Injection) In addition to the schematic and theory of operation, refer to the transmitter injection troubleshooting...
4-12 Troubleshooting Procedures: UHF Range 1 (380–470 MHz) Band Main Board Troubleshooting Table 4-7. Test Mode Channels UHF Range 1 (AUX 4 is not used for VCO selection in UHF) AUX (TX Logic) AUX (RX Logic) RX VCO Test TX Freq RX Freq Freq Mode...
Troubleshooting Procedures: UHF Range 1 (380–470 MHz) Band Main Board Troubleshooting 4-13 4.7.2 FGU Troubleshooting Aids The following illustrations are additional service aids for troubleshooting the frequency generation unit. • Figure 4-4 is a block diagram of the DC distribution for the frequency generation unit. •...
4-14 Troubleshooting Procedures: UHF Range 1 (380–470 MHz) Band Main Board Troubleshooting 3.0V 3.0V 16.8MHz Reference to Controller and Receiver Back End U5751 5.0V 8.2V VOLTAGE 16.8MHz OSC MULTIPLIER 8.2V SW 3.0V D5750 and 8.2V SW D5751 Keyed 3.0V 9.1V Regulator 3.0V Q5825...
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Troubleshooting Procedures: UHF Range 1 (380–470 MHz) Band Main Board Troubleshooting 4-15 Table 4-9. LV Frac-N U6751 Pin Descriptions (UHF Range 1) (Continued) Pin No. Pin Name Description VMULT1 Not used INDMULT Not used — No connection REFSEL Not used FREFOUT Not used AVDD...
4-16 Troubleshooting Procedures: UHF Range 1 (380–470 MHz) Band Main Board Troubleshooting Pin 9 (Chip Select) Pin 7 (Data) Pin 8 (Clock) Figure 4-6. Waveform Representation During Programming of the LV Frac-N IC (U5752) NOTE: The above waveforms are representations only. 4.7.3 Out-of-Lock Condition The probable cause of an out-of-lock condition is a failure in the synthesizer circuit.
Troubleshooting Procedures: UHF Range 2 (450–520 MHz) Band Main Board Troubleshooting 4-17 UHF Range 2 (450–520 MHz) Band Main Board Troubleshooting This information will help you troubleshoot the RF section of the UHF Range 2 (450–520 MHz) band XTL 1500 radio. Use this information, along with the theory of operation and troubleshooting charts, to diagnose and isolate the cause of failures.
4-18 Troubleshooting Procedures: UHF Range 2 (450–520 MHz) Band Main Board Troubleshooting NOTE: The UHF band radios use high-side injection with an IF frequency of 109.65 MHz; therefore, the receive VCO frequencies are 109.65 MHz higher than the selected radio channel frequencies.
Troubleshooting Procedures: UHF Range 2 (450–520 MHz) Band Main Board Troubleshooting 4-19 4.8.2 FGU Troubleshooting Aids The following illustrations are additional service aids for troubleshooting the frequency generation unit. • Figure 4-7 is a block diagram of the DC distribution for the frequency generation unit. •...
4-20 Troubleshooting Procedures: UHF Range 2 (450–520 MHz) Band Main Board Troubleshooting 3.0V 3.0V 16.8MHz Reference to Controller and Receiver Back End U5751 5.0V 8.2V VOLTAGE 16.8MHz OSC MULTIPLIER 8.2V SW 3.0V D5750 and 8.2V SW D5751 Keyed 3.0V 9.1V Regulator 3.0V Q5825...
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Troubleshooting Procedures: UHF Range 2 (450–520 MHz) Band Main Board Troubleshooting 4-21 Table 4-12. LV Frac-N U6751 Pin Descriptions (UHF Range 2) (Continued) Pin No. Pin Name Description VMULT1 Not used INDMULT Not used — No connection REFSEL Not used FREFOUT Not used AVDD...
4-22 Troubleshooting Procedures: 700–800 MHz Main Board Troubleshooting Pin 9 (Chip Select) Pin 7 (Data) Pin 8 (Clock) Figure 4-9. Waveform Representation During Programming of the LV Frac-N IC (U5752) NOTE: The above waveforms are representations only. 4.8.3 Out-of-Lock Condition The probable cause of an out-of-lock condition is a failure in the synthesizer circuit.
Troubleshooting Procedures: 700–800 MHz Main Board Troubleshooting 4-23 4.9.1 Display Flashes “FAIL 001” This display indicates a synthesizer "out-of-lock" condition. The following information will help to trouble shoot the frequency generation unit to the component level. Perform the following checks to determine the mode of the Fail 001: 1.
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4-24 Troubleshooting Procedures: 700–800 MHz Main Board Troubleshooting Table 4-14. VCO Frequency Calculation and Switching Logic (700–800 MHz) (Continued) Radio MODE Frequency Frequency Frequency (MHz) Formula (MHz) Tx (TA) 851.0125 - F(U6754 osc2) = 851.0125 - HIgh 868.9875 868.9875 Tx (TA) = Talkaround Mode Tx(RPTR) = Repeater or trunked 3.
4-26 Troubleshooting Procedures: 700–800 MHz Main Board Troubleshooting 3.0V 3.0V 16.8MHz Reference to Controller and Receiver Back End U6752 5.0V VOLTAGE 16.8MHz OSC MULTIPLIER 3.0V 8.2V D6751 and D6752 8.2V SW 3.0V 8.2V SW Regulator 3.0V Keyed U6750 VMULT3 9.1V U6754 VMULT4 CLOCK...
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Troubleshooting Procedures: 700–800 MHz Main Board Troubleshooting 4-27 Table 4-15. LV Frac-N U6751 Pin Descriptions (700–800 MHz) (Continued) Pin No. Pin Name Description 3.0-V supply for reference oscillator warp circuitry VMULT2 Not used VMULT1 Not used INDMULT Not used — No connection REFSEL Not used...
4-28 Troubleshooting Procedures: Standard Bias Tables Pin 9 (Chip Select) Pin 7 (Data) Pin 8 (Clock) MAEPF-27805-O Figure 4-12. Waveform Representation During Programming of the LV Frac-N IC (U6751) NOTE: The above waveforms are representations only. 4.9.3 No or Low Output Power (TX or RX Injection) In addition to the schematic and theory of operation, refer to the transmitter injection troubleshooting flowchart and the receiver injection trouble shooting flowchart in Chapter 5.
Troubleshooting Procedures: Standard Bias Tables 4-29 Table 4-16. Standard Operating Bias: Power Lines (Continued) Nominal Value Signal Name Range/State Probe Locations 9.18 V No change U0500-5 5V_ABACUS No change U0505-3 VCC_5 No change J0401-23, U0507-8, U0503-3, U0502-8, U0501-8 VCC_3 No change U0962-5 2.85 V LV_DETECT...
4-30 Troubleshooting Procedures: Standard Bias Tables Table 4-17. Standard Operating Bias: Clock and Control Lines (Continued) Nominal Value Signal Name Range/State Probe Locations RS232__UARTA_RTS Flow control line—not TP0410, J2-10 used always Note: Use chassis as GND when measuring on an oscilloscope. Approx.
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Troubleshooting Procedures: Standard Bias Tables 4-31 Table 4-18. Standard Operating Bias: Audio Lines (Continued) Nominal Value Signal Name Range/State Probe Locations 9.2 V Aux_Mic = [ A(tx) ] Expects 300 mV input J0401-6, J2-23 (transmit audio) (APCO default) Expects 80 mV input (motorcycle use) 2.84 V Aux_PTT = [ PTT ]...
Troubleshooting Procedures: Power Amplifier Procedures 4-33 4.11.3 UHF Range 2 (450–520 MHz) Band Use this information, along with the theory of operation, to diagnose and isolate the cause of failures. The principle tools needed to troubleshoot a circuit to the component level are the schematic and the theory of operation.
ASTRO Digital XTL 1500 VHF/UHF Range 1/UHF Range 2/ 700–800 MHz Mobile Radio Basic Service Manual. NOTE: Due to the high frequency of operation, it is imperative that you use specified Motorola parts when component replacement is necessary. At these frequencies, second and third order properties of the components are very important and are part of the circuit's design.
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• Apply new thermal pads if the current thermal pad are damaged. Follow the instructions in the ASTRO Digital XTL 1500 VHF/UHF Range 1/UHF Range 2/700–800 MHz Mobile Radio Basic Service Manual. • Use Motorola-specified parts when component replacement is required. • When instructed to inspect parts, look for any package damage and/or solder defects. 6815854H01-A...
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4-36 Troubleshooting Procedures: Power Amplifier Procedures Notes June 15, 2005 6815854H01-A...
Chapter 5 Troubleshooting Charts Introduction This chapter contains detailed troubleshooting flowcharts and tables. These should be used as a guide in determining the problem areas. They are not a substitute for knowledge of circuit operation and astute troubleshooting techniques. It is advisable to refer to the related detailed circuit descriptions in the theory of operation chapter prior to troubleshooting a radio.
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Troubleshooting Charts: List of Troubleshooting Charts Table 5-1. List of Troubleshooting Charts (Continued) Description Page 5-42 RFPA Power Control—No VGBIAS 700–800 MHz 5-43 No 16.8 MHz Reference Oscillator Frequency 5-44 Poor RX Sensitivity or No RX Audio 5-46 RX IF—Poor SINAD or No Audio 5-47 RX Back-End—Poor SINAD or No Audio 5-50...
Troubleshooting Charts: Troubleshooting Tables Troubleshooting Tables 5.3.1 For VHF, UHF R1 and 700-800 MHz models This section contains troubleshooting tables that can help you isolate a problem in your radio. Table 5-2. XTL 1500 Troubleshooting Table (700–800 MHz, 380-470 MHz and 136-174 MHz) Symptom Check Section Troubleshooting Procedure...
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Troubleshooting Charts: Troubleshooting Tables Table 5-2. XTL 1500 Troubleshooting Table (700–800 MHz, 380-470 MHz and 136-174 MHz) (Continued) Symptom Check Section Troubleshooting Procedure Component Radio Dead, No Flex/Control Head Check for SW_B+_CH at J0401- Absence of signal may indicate Display, No LED 17, TP0413.
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Troubleshooting Charts: Troubleshooting Tables Table 5-2. XTL 1500 Troubleshooting Table (700–800 MHz, 380-470 MHz and 136-174 MHz) (Continued) Symptom Check Section Troubleshooting Procedure Component No RX Audio/ ABACUS Circuit • Check for 20 kHz Frame Sync • Absence of signal causes no Receive Does not (380-470 MHz, pulse signal at testpoint FS...
Troubleshooting Charts: Troubleshooting Tables 5.3.2 For UHF R2 Models This section contains troubleshooting tables that can help you isolate a problem in your radio. Table 5-3. XTL 1500 Troubleshooting Table (450-520 MHz) Symptom Check Section Troubleshooting Procedure Component No TX Modulation Controller Block With 80 mV rms, 1 kHz injected to the MIC_HI line and CPS mic...
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Troubleshooting Charts: Troubleshooting Tables Table 5-3. XTL 1500 Troubleshooting Table (450-520 MHz) (Continued) Symptom Check Section Troubleshooting Procedure Component Radio Dead, Display Regulators • Check for SW_B+ at Q0503, • Absence of signal may indicate Lights Up with FL U0500-4, U0950-4, U0951-4 failure with Q0503 01/90 •...
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Troubleshooting Charts: Troubleshooting Tables Table 5-3. XTL 1500 Troubleshooting Table (450-520 MHz) (Continued) Symptom Check Section Troubleshooting Procedure Component No RX Audio/ ABACUS Circuit • Check for 20 kHz Frame Sync • Absence of signal causes no Receive Does not (380-470 MHz, pulse signal at testpoint FS receive.
5-10 Troubleshooting Charts: Troubleshooting Test Points Troubleshooting Test Points The following figures show the location of the main board test points for measuring voltages and viewing waveforms. ID6 ID5 ID3 MAEPF-27802-O Figure 5-1. Main Board Test Points—Top Side MAEPF-27801-O Figure 5-2. Main Board Test Points—Bottom Side Board ID Jumper Configuration The following jumper table (Table 5-5 on page...
Troubleshooting Charts: Flowcharts 5-11 The table indicates what the logic levels are, as well as how they correlate to the placement or removal of a jumper to accomplish the logic level. This is because some of the board ID resistors are on Pull-Up I/O pins and some are on Pull-Down I/O pins.
5-12 Troubleshooting Charts: Flowcharts 5.6.1 Poor RX Sensitivity or No RX Audio (136–174 MHz)—Part 1 of 2 START Radio is in Pre amp mode Does a level of 9.3V Go to FGU receiver in exist on section Pre-amp mode L3262,L3400 easure 2.85V on RF_ATT2_A at C3288...
Troubleshooting Charts: Flowcharts 5-13 5.6.2 Poor RX Sensitivity or No RX Audio (136–174 MHz)—Part 2 of 2 Visually ispect Go to DC FE and BE Is ABACUS section components VCC 3V installation Inject -40dBm (CW) to RF Installation Fix or replace connector.
5-14 Troubleshooting Charts: Flowcharts 5.6.3 RX IF—Poor SINAD or No Audio (136–174 MHz) easure the IF signal level on C3414 (Std/Pre mode) Level Refer to is -4/-13dBm troubleshooting referenced to the flow diagram for RF input Receiver Front End level? easure the IF signal level on C3408...
Troubleshooting Charts: Flowcharts 5-15 5.6.4 RX Back-End—Poor SINAD or No Audio (136–174 MHz)—Part 1 of 3 Is the Refer back to IF level at Receiver IF ______~+16dB troubleshooting relative to the flowchart RF input? easure Second LO at C3207, top side towards Abacus III (U3000) pin Check Voltage Regulator...
5-16 Troubleshooting Charts: Flowcharts 5.6.5 RX Back-End—Poor SINAD or No Audio (136–174 MHz)—Part 2 of 3 Measure control voltage at U 000 pin 8 U 000 pin 8=1. 5V Approx. Inspect 2nd LO VCO for missing parts or solder defect Visual Repair defects inspection...
Troubleshooting Charts: Flowcharts 5-17 5.6.6 RX Back-End—Poor SINAD or No Audio (136–174 MHz)—Part 3 of 3 Measure DC tuning voltage at R3010 Freq of voltage at CLKOUT R3010 = <1.2MHz? 0.0V? voltage at R3010 = 3.0V? Inspect clock oscillator circuit for solder defects and/or missing components Visual Repair defects...
5-18 Troubleshooting Charts: Flowcharts 5.6.7 Low or No RX Injection Signal (136–174 MHz) START Low or No RX Injection Signal on TP6771 Check Q3761 and Approx. DC Bias Circuitry; 7.5V on replace if R3800/R3801 necessary Approx. Check components 7.5V on around Q3769, if R3872/Q3768 OK replace...
Troubleshooting Charts: Flowcharts 5-19 5.6.8 Low or No TX Injection Signal (136–174 MHz) START Low or No TX Injection Signal at TP6769 Check components Approx. around Q3760-C, 7.5V on if OK, replace C3935/C3815 Q3760 Approx. Check components around Q3759, 7.5V on if OK, replace C3755/R3807 Q3759...
5-20 Troubleshooting Charts: Flowcharts 5.6.9 TX or RX VCO Unlock (Fail 001) (136–174 MHz)—Part 1 of 2 TX or RX VCO Unlock (Fail 001) Place an Inductive field probe connected to a spectrum analyzer "Sniff" Frequency near area to be sniffed. near TX or RX VCO shield or injection string...
Troubleshooting Charts: Flowcharts 5-21 5.6.10 TX or RX VCO Unlock (Fail 001) (136–174 MHz)—Part 2 of 2 3VDC Check 5 Volt at pin 5 of supply path from U3750? regulator U0505 Check 3 Volt Refer to Chart to determine supply path from which AUX output determines Regulator U3750 active VCO.
5-22 Troubleshooting Charts: Flowcharts 5.6.11 No Output Power at TX Mode (136–174 MHz) Start Press PTT button Measure the volt age at TP0951 Measure the Replace U0951 volt age 9.1V < V < 9.6V 9.3V_Tx_regulator at TP0961 Measure the Reset the radio volt age and than press V <...
Troubleshooting Charts: Flowcharts 5-23 5.6.12 No Output Power and IDC < 2A at TX Mode (136–174 MHz) Start Disconnect the radio from DC power easure the DC resistance between TP0936 and ground easure the DC Perform resistance R < 3 Ohm Replace Q3550 between C3554 PA bias tune...
5-24 Troubleshooting Charts: Flowcharts 5.6.13 No 16.8 MHz Reference Oscillator Frequency (380–470 MHz and 450–520 MHz) START No 16.8MHz Reference Measure 16.8MHz Signals Probe pin 3 with Oscilloscope having a of Y5750 for bandwidth >100MHz. 16.8MHz Check 3.0V 3.0VDC >800mVpp at pin 4 of regulator path 16.8MHz?
Troubleshooting Charts: Flowcharts 5-25 5.6.14 Poor RX Sensitivity or No RX Audio (380–470 MHz and 450–520 MHz)—Part 1 of 2 Poor Rx Sensitivity or no Rx audio Measure Transceiver 3kHz FM Deviation 12dB Sinad by injecting 1kHz Audio tone signal at antenna port 12 dB Sinad Sensitivity Receiver...
5-26 Troubleshooting Charts: Flowcharts 5.6.15 Poor RX Sensitivity or No RX Audio (380–470 MHz and 450–520 MHz)—Part 2 of 2 Inject a standard FM test signal into the antenna port. 3kHz FM Deviation Use a spectrum analyzer and 1kHz Audio tone high-impedance RF probe to Amplitude: -47dBm measure the signal at TP5301...
Troubleshooting Charts: Flowcharts 5-27 5.6.16 RX IF—Poor SINAD or No Audio (380–470 MHz and 450–520 MHz)—Part 1 of 2 Measure the IF signal level (109.65MHz) at C5406 Level is -3dB Check Y5400 referenced to R5412? Measure the IF signal level (109.65MHz) at C5403 Level...
5-28 Troubleshooting Charts: Flowcharts 5.6.17 RX IF—Poor SINAD or No Audio (380–470 MHz and 450–520 MHz)—Part 2 of 2 Measure the IF signal level at U5400-3 Level is -3dB Check Y5401 referenced to C5403? Measure the IF signal level (109.65MHz) at C5403 Same as level at U5400-3...
Troubleshooting Charts: Flowcharts 5-29 5.6.18 RX Back-End—Poor SINAD or No Audio (380–470 MHz and 450–520 MHz)— Part 1 of 3 Is the Refer back to IF level at Receiver IF R5034 ~+20dB troubleshooting relative to the flowchart RF input? Measure Second LO at C5058, top side towards Abacus III (U5002) pin...
5-30 Troubleshooting Charts: Flowcharts 5.6.19 RX Back-End—Poor SINAD or No Audio (380–470 MHz and 450–520 MHz)— Part 2 of 3 R5013 NOMINAL VOLTS DC FREQ (MHz) 68.0 71.1 Measure 75.6 control voltage at R5013 77.0 Freq 2nd LO R5013 VCO <107.4 = 5.0V? MHz? Freq 2nd LO...
Troubleshooting Charts: Flowcharts 5-31 5.6.20 RX Back-End — Poor SINAD or No Audio (380–470 MHz and 450–520 MHz)— Part 3 of 3 Measure DC tuning voltage (Vt) at R5022 Freq of voltage at CLKOUT R5022 = <18MHz? 0.0V? voltage at R5022 = 3.0V? Inspect clock oscillator...
5-32 Troubleshooting Charts: Flowcharts 5.6.21 Low or No RX Injection Signal (380–470 MHz and 450–520 MHz) START Low or No RX Injection Signal Approx. Check Voltage 5V on Regulator U5301 C5318? Approx. 4.5V on Check L5299 pin 14 on C5335? of U5303? Check R5324, Check RF path...
Troubleshooting Charts: Flowcharts 5-33 5.6.22 Low or No TX Injection Signal (380–470 MHz and 450–520 MHz) START Low or No TX Injection Signal Check Q5828 and Approx. DC Bias Circuitry; 3.4 V on replace if Q5828-C? necessary Check Q5829 and Approx.
5-34 Troubleshooting Charts: Flowcharts 5.6.23 No TX Audio (380–470 MHz and 450–520 MHz) START No TX Audio This Flow chart only checks the modulation path of the FGU. Readings are typical and Inject a 2.0Vpp can vary with deviation settings that are 1kHz tone into Mic programmed during tuning.
Troubleshooting Charts: Flowcharts 5-35 5.6.24 TX or RX VCO Unlock (Fail 001) (380–470 MHz and 450–520 MHz)—Part 1 of 2 TX or RX VCO Unlock (Fail 001) Place an Inductive field probe connected to a spectrum analyzer "Sniff" Frequency near area to be sniffed. near TX or RX VCO or infection string...
5-36 Troubleshooting Charts: Flowcharts 5.6.25 TX or RX VCO Unlock (Fail 001) (380–470 MHz and 450–520 MHz)—Part 2 of 2 3VDC Check 5 Volt at pin 5 of supply path from U5750? regulator U0505 Check 3 Volt Refer to Chart to determine supply path from which AUX output determines Regulator U5750...
Troubleshooting Charts: Flowcharts 5-37 5.6.26 RF Power Amplifier (RFPA)—No or Low TX Power Output (380–470 MHz and 450–520 MHz)—Part 1 of 5 NOTE: For each flowchart step in which reference is made to a note, be sure to refer to that specific note (located on page 58 of this flowchart) for guidance in performing the actual troubleshooting procedure.
5-38 Troubleshooting Charts: Flowcharts 5.6.27 RF Power Amplifier (RFPA)—No or Low TX Power Output (380–470 MHz and 450–520 MHz)—Part 2 of 5 Check/repair/replace defective parts or Q5503 bias GOTO Power Control voltages as per Table 1? - No/low VGBIAS (Note 10) Defective parts Chart in matching network...
Troubleshooting Charts: Flowcharts 5-39 5.6.28 RF Power Amplifier (RFPA)—No or Low TX Power Output (380–470 MHz and 450–520 MHz)—Part 3 of 5 Defective parts in Repair/replace antenna switch? defective parts (Note 15) Defective parts in Repair/replace harmonic filter? defective parts (Note 16) Defective parts in Repair/replace...
5-40 Troubleshooting Charts: Flowcharts 5.6.29 RF Power Amplifier (RFPA)—No or Low TX Power Output (380–470 MHz and 450–520 MHz)—Part 4 of 5 Specific Notes: 1. Remove C5508 and solder the center conductor of a small 50-ohm, coaxial cable to TP5502. Solder ground to the gold shield track adjacent to TP5502.
5-42 Troubleshooting Charts: Flowcharts 5.6.31 RFPA Power Control—No VGBIAS (380–470 MHz and 450–520 MHz) START Read General Notes before proceeding. Read specific notes as indicated No/low Remove U0960. Q5503 pin 7 TP0937 voltage Repair/replace VGBIAS1? 2.6-2.8 V? U0960 Repair/replace U0959. If problem still not fixed, see IC communication in CONTROLLER...
Troubleshooting Charts: Flowcharts 5-43 5.6.32 No 16.8 MHz Reference Oscillator Frequency (700–800 MHz) START No 16.8MHz Reference Measure 16.8MHz Signals Probe pin 3 with Oscilloscope having a of Y6750 for bandwidth >100MHz. 16.8MHz 3.0VDC Check 3.0V >800mVpp regulator path at pin 1 of 16.8MHz? from U6750 Y6750?
5-44 Troubleshooting Charts: Flowcharts 5.6.33 Poor RX Sensitivity or No RX Audio (700–800 MHz)—Part 1 of 2 Poor Rx Sensitivity or no Rx audio Measure Transceiver 3kHz FM Deviation Sinad by injection 1kHz Audio tone signal at antenna port Receiver Sinad is working <...
Troubleshooting Charts: Flowcharts 5-45 5.6.34 Poor RX Sensitivity or No RX Audio (700–800 MHz)—Part 2 of 2 Inject a standard FM test signal into the antenna port. 3kHz FM Deviation Use a spectrum analyzer and 1kHz Audio tone high-impedance RF probe to Amplitude: 47dBm measure the signal at TP6253.
5-46 Troubleshooting Charts: Flowcharts 5.6.35 RX IF—Poor SINAD or No Audio (700–800 MHz) Measure the IF signal level (73.35MHz) at TP6252 Level Refer to is +4dB troubleshooting referenced to the flow diagram for RF input Receiver Front End level? Measure the IF signal level (73.35MHz) at TP6350...
Troubleshooting Charts: Flowcharts 5-47 5.6.36 RX Back-End—Poor SINAD or No Audio (700–800 MHz)—Part 1 of 3 START Poor SINAD or No Audio Is the Refer back to IF level at Receiver IF TP6350~+20dB troubleshooting relative to the flowchart RF input? Measure Second LO at C6026, top side towards Abacus III...
Troubleshooting Charts: Flowcharts 5-49 5.6.38 RX Back-End—Poor SINAD or No Audio (700–800 MHz)—Part 3 of 3 Measure DC tuning voltage (Vt) at R6007 Freq of voltage at CLKOUT R6007 = <1.2MHz? 0.0V? voltage at R6007 = 3.0V? Inspect clock oscillator circuit for solder defects and/or missing components Visual...
5-50 Troubleshooting Charts: Flowcharts 5.6.39 Low or No RX Injection Signal (700–800 MHz) START Low or No RX Injection Signal Check Q6762 and Approx. DC Bias Circuitry; 5V on replace if Q6762-C? necessary Approx. Replace R6801 4.5V (–1V) on Ohms across and Q6763 Q6763-D? R6801?
Troubleshooting Charts: Flowcharts 5-51 5.6.40 Low or No TX Injection Signal (700–800 MHz) START Low or No TX Injection Signal Check Q6764 and Approx. DC Bias Circuitry; 5.5 - 6V on replace if Q6764-C? necessary Check Q6765 and Approx. DC Bias Circuitry; 5.5 - 6V on replace if Q6765-C?
5-52 Troubleshooting Charts: Flowcharts 5.6.41 No TX Audio (700–800 MHz) START No TX Audio This Flow chart only checks the modulation path of the FGU. Readings are typical and Inject a 2.0Vpp can vary with deviation settings that are 1kHz tone into Mic programmed during tuning.
Troubleshooting Charts: Flowcharts 5-53 5.6.42 TX or RX VCO Unlock (Fail 001) (700–800 MHz)—Part 1 of 2 TX or RX VCO Unlock (Fail 001) Place an Inductive field probe connected to a spectrum analyzer "Sniff" Frequency near area to be sniffed. near TX or RX VCO shield or infection string...
5-54 Troubleshooting Charts: Flowcharts 5.6.43 TX or RX VCO Unlock (Fail 001) (700–800 MHz)—Part 2 of 2 3VDC Check 5 Volt at pin 5 of supply path from U6750? regulator U0505 Check 3 Volt Refer to Chart to determine supply path from which AUX output determines Regulator U6750 active VCO.
Troubleshooting Charts: Flowcharts 5-55 5.6.44 RF Power Amplifier (RFPA)—No or Low TX Power Output (700–800 MHz)— Part 1 of 5 NOTE: For each flowchart step in which reference is made to a note, be sure to refer to that specific note (located on page 58 of this flowchart) for guidance in performing the actual troubleshooting procedure.
5-56 Troubleshooting Charts: Flowcharts 5.6.45 RF Power Amplifier (RFPA)—No or Low TX Power Output (700–800 MHz)— Part 2 of 5 Check/repair/replace Q6540-1 bias defective parts or voltages as per Table 1? GOTO Power Control - No/low VGBIAS (Note 10) Defective parts Chart in matching network Repair/replace...
Troubleshooting Charts: Flowcharts 5-57 5.6.46 RF Power Amplifier (RFPA)—No or Low TX Power Output (700–800 MHz)— Part 3 of 5 Defective parts in Repair/replace antenna switch? defective parts (Note 15) Defective parts in Repair/replace harmonic filter? defective parts (Note 16) Defective parts in Repair/replace power detector?
5-58 Troubleshooting Charts: Flowcharts 5.6.47 RF Power Amplifier (RFPA)—No or Low TX Power Output (700–800 MHz)— Part 4 of 5 Specific Notes: 1. Remove C6501 and solder the center conductor of a small 50-ohm, coaxial cable to VN_B6500. Solder ground to the gold shield track adjacent to VN_B6500. Attach an RF milliwatt meter, key the transmitter, and measure TX_INJ power.
5-60 Troubleshooting Charts: Flowcharts 5.6.49 RFPA Power Control—No K9.1V (700–800 MHz) START Read General Notes before proceeding. Read specific notes as indicated Is Q0952, pin 4 Is 9.3V present at Repair/replace < 0.5V when mic Q0952, pin 5? Q0952 button is depressed? Connect battery See GPIO in Is K9.1V_EN >...
Troubleshooting Charts: Flowcharts 5-61 5.6.50 RFPA Power Control—No VGBIAS (700–800 MHz) START Read General Notes before proceeding. Read specific notes as indicated Remove U0960. No/low Q6540 TP0937 voltage VGBIAS1? 2.6-2.8 V? Repair/replace U0960 Repair/replace U0959. If problem still not fixed, see IC communication in CONTROLLER section.
5-62 Troubleshooting Charts: Flowcharts 5.6.51 RFPA Power Control—No or Low TX RFPA_CNTRL (700–800 MHz)—Part 1 of 2 For each flowchart step in which reference is made to a note, be sure to refer to that specific note (located on page 63 of this flowchart) for guidance in performing the actual troubleshooting procedure.
Troubleshooting Charts: Flowcharts 5-63 5.6.52 RFPA Power Control—No or Low TX RFPA_CNTRL (700–800 MHz)—Part 2 of 2 Specific Notes: 1. Remove Q0954. If proper power is restored, repair/replace Q0954. If the problem still persists, check for proper operation of U0958-1, and replace U0958 if not functioning properly.
Chapter 6 Troubleshooting Waveforms Introduction 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 the operating conditions. Table 6-1.
Schematics, Component Location Diagrams, and Parts Lists: List of Schematics, Component Location Diagrams, and Parts Lists Chapter 7 Schematics, Component Location Diagrams, and Parts Lists List of Schematics, Component Table 7-1. List of Schematics, Component Location Table 7-1. List of Schematics, Component Location Table 7-1.
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Schematics, Component Location Diagrams, and Parts Lists: List of Schematics, Component Location Diagrams, and Parts Lists Table 7-1. List of Schematics, Component Location Table 7-1. List of Schematics, Component Location Table 7-1. List of Schematics, Component Location Diagrams, and Parts Lists (Continued) Diagrams, and Parts Lists (Continued) Diagrams, and Parts Lists (Continued) Figure Title...
Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board Control Head Main Board Figure 7-1. Control Head Board Overall Block Diagram 6815854H01-A June 16, 2005...
Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board Figure 7-2. Control Head Controller (OMAP Processor) Sheet 1 of 2 June 16, 2005 6815854H01-A...
Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board Figure 7-3. Control Head Controller (OMAP Processor) Sheet 2 of 2 6815854H01-A June 16, 2005...
Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board Figure 7-4. Control Head Controller (SDRAM and Flash Memory) June 16, 2005 6815854H01-A...
Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board Figure 7-5. TPS65012 Power Management IC, Factory Programming 6815854H01-A June 16, 2005...
Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board Figure 7-7. AVR Power Management Control 6815854H01-A June 16, 2005...
7-10 Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board Figure 7-8. GCAI Accessory Interface (Sheet 1 of 2) June 16, 2005 6815854H01-A...
Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board 7-13 Figure 7-11. User Interface (Sheet 1 of 2) 6815854H01-A June 16, 2005...
7-14 Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board Figure 7-12. User Interface (Sheet 2 of 2) June 16, 2005 6815854H01-A...
Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board 7-17 D4100 D4101 D4102 Q4100 R4103 R2120 C1307 FLASH_CLK S4108 R2117 Q4101 C1305 TP_12V R2138 R4104 R2119 R2137 U1301 R1311 C2309 C1304 D3204 U3103 R2135 R3104 R1313 R2304 C1306 Q4102 R2136 D3203...
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7-18 Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board Control Head Main Board Parts Lists Reference Motorola Reference Motorola Reference Motorola Description Description Description Designator Part Number Designator Part Number Designator Part Number Reference Motorola Description C1022 2113946K02 CAP CHIP 0.1uF +80%/-...
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Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board 7-19 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C3102 2113946K02 CAP CHIP 0.1uF +80%/-...
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7-20 Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number Q3100 4805921T09 TSTR DUAL ROHM...
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Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board 7-21 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number R2139 0613952G67 RES CHIP 0 1% 0603...
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7-22 Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board Reference Motorola Description Designator Part Number U2304 5109522E99 IC SNGL 2-INPUT AND GATE U2305 5114000B34 IC SNGL 2-INPUT NAND GATE U3100 5105109Z31 IC QUAD 2:1 MUX/DEMUX U3101 5115810H01...
Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board 7-23 VR7002 Figure 7-16. GCAI Connector Board Layout—Side 1 Top 6815854H01-A June 16, 2005...
7-24 Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board Figure 7-17. GCAI Connector Board Layout—Side 2 Bottom June 16, 2005 6815854H01-A...
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Schematics, Component Location Diagrams, and Parts Lists: Control Head Main Board 7-25 GCAI Connector Board Parts List Reference Motorola Description Designator Part Number J7000 0964501H02 CONN 10-PINS ACCY GCAI P7000 2815159H01 CONN 12-PINS GCAI 8415256H01 GCAI CONN PCB VR7000 4866544A01...
7-46 Schematics, Component Location Diagrams, and Parts Lists: HUD4022A (VHF) Main Board MOTOROLA PROPRIETARY CONFIDENTIAL DC DISTRIBUTION VOLTAGE V(operating)/mA(max) SOURCED BY: SUPPLY FOR TP0500 TEST_POINT Emergency Sense Block UNSW_5V Battery SW_B+ Audio PA FILT_B+ VCC1.8, VCC1.55 1.86 & 1.55 / 100 mA...
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7-56 Schematics, Component Location Diagrams, and Parts Lists: HUD4022A (VHF) Main Board HUD4022A (VHF) Main Board Parts List Reference Motorola Reference Motorola Reference Motorola Description Description Description Designator Part Number Designator Part Number Designator Part Number Reference Motorola Description C0216...
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Schematics, Component Location Diagrams, and Parts Lists: HUD4022A (VHF) Main Board 7-57 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C0518 2185802B01 CAP 10V 4.7UF...
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7-58 Schematics, Component Location Diagrams, and Parts Lists: HUD4022A (VHF) Main Board Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C3258 2113740L42 CAP 100.0 PF 50V 2.0 %...
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Schematics, Component Location Diagrams, and Parts Lists: HUD4022A (VHF) Main Board 7-59 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C3791 2113740F29 CAP CHIP REEL CL1 +/-3...
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7-60 Schematics, Component Location Diagrams, and Parts Lists: HUD4022A (VHF) Main Board Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number J0402 0985631E01 CONNECTOR FEMALE 32...
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Schematics, Component Location Diagrams, and Parts Lists: HUD4022A (VHF) Main Board 7-61 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number Q0612 4805723X03 TRANS DUAL NPN-PNP...
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7-62 Schematics, Component Location Diagrams, and Parts Lists: HUD4022A (VHF) Main Board Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number R0624 0662057M50 RES. CHIP 100 5% 20X40...
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Schematics, Component Location Diagrams, and Parts Lists: HUD4022A (VHF) Main Board 7-63 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number R3550 0685934D01 RES FIXED CHIP (CUR-...
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7-64 Schematics, Component Location Diagrams, and Parts Lists: HUD4022A (VHF) Main Board Reference Motorola Reference Motorola Description Description Designator Part Number Designator Part Number U0605 5109522E17 IC SNGL NAND TC7S00FU VR0404 4805656W10 DIODE DUAL 15 VOLT U0606 5105109Z31 IC QUAD 2:1 MUX/DEMUX...
7-76 Schematics, Component Location Diagrams, and Parts Lists: HUE4039A (UHF Range 1) Main Board THE RECEIVER INPUT SIGNAL AND THE INJECTION SIGNAL GENERATED BY TH RECEIVE SYNTHESIZER ARE MIXED TO PROVIDE A 109.65MHz I-F SIGNAL. L5390 C5391 68nH 109.65 MHz I.
7-78 Schematics, Component Location Diagrams, and Parts Lists: HUE4039A (UHF Range 1) Main Board Coming From Abacus Going to Frontend RX_FILT_1_A RX_FILT_1 RF_ATTN_1_B RF_ATTN_1_C RF_ATTN_2_B RF_ATTN_2_C RF_ATTN_3_B RF_ATTN_3_C R5405 5V_IF 9.3V_FROM_BE C5431 C5432 C5420 220pF 0.1uF .01uF E5400 Q5402 9.3V_FROM_FE 9.3V_TO_CONTR O O O O O O O O O O O O O O O O O O O O O C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C O O O O CO O O O N N...
Schematics, Component Location Diagrams, and Parts Lists: HUE4039A (UHF Range 1) Main Board 7-83 DC DISTRIBUTION TP0500 Emergency Sense Block UNSW_5V VOLTAGE V(operating)/mA(max) SOURCED BY: SUPPLY FOR: Q0502 D0501 Battery SW_B+ Audio PA FILT_B+ VCC1.8, VCC1.55 1.86 & 1.55 / 100 mA VCC5 Patriot, EIM, Memory R0500...
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Schematics, Component Location Diagrams, and Parts Lists: HUE4039A (UHF Range 1) Main Board 7-95 Reference Motorola Reference Motorola Reference Motorola Description Description Description HUE4039A Main Board Parts List Designator Part Number Designator Part Number Designator Part Number Reference Motorola C0221 2311049A78 CAP TANT CHIP 10.0 UF 10%...
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7-96 Schematics, Component Location Diagrams, and Parts Lists: HUE4039A (UHF Range 1) Main Board Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C0504 2113741N69...
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Schematics, Component Location Diagrams, and Parts Lists: HUE4039A (UHF Range 1) Main Board 7-97 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C0986 2113743M24...
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7-98 Schematics, Component Location Diagrams, and Parts Lists: HUE4039A (UHF Range 1) Main Board Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C5351 2113743L50...
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Schematics, Component Location Diagrams, and Parts Lists: HUE4039A (UHF Range 1) Main Board 7-99 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C5718 2113743L01...
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7-100 Schematics, Component Location Diagrams, and Parts Lists: HUE4039A (UHF Range 1) Main Board Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C5923 2113743Q07 CAP CHIP 1.5 PF +/-1PF...
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Schematics, Component Location Diagrams, and Parts Lists: HUE4039A (UHF Range 1) Main Board 7-101 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number L5283 2462587V33...
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7-102 Schematics, Component Location Diagrams, and Parts Lists: HUE4039A (UHF Range 1) Main Board Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number Q5401 4805218N55...
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Schematics, Component Location Diagrams, and Parts Lists: HUE4039A (UHF Range 1) Main Board 7-103 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number R0933 0662057M90 RES.
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7-104 Schematics, Component Location Diagrams, and Parts Lists: HUE4039A (UHF Range 1) Main Board Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number R5530 0662057C20 CHIP RES 5.1 OHMS 5%...
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ZENER U0963 5109522E53 IC SNGL BUF NC7S125P5X Note: For optimum performance, diodes, transistors and SC70 VR0407 4805656W10 DIODE DUAL 15 VOLT integrated circuits must be ordered by MOTOROLA part ZENER U0965 5185143E68 IC LM7219 HIGH SPEED numbers. COMPARATOR VR0408 4813832C75...
Schematics, Component Location Diagrams, and Parts Lists: HUE4040A (UHF Range 2) Main Board 7-117 THE RECEIVER INPUT SIGNAL AND THE INJECTION SIGNAL GENERATED BY THE RECEIVE SYNTHESIZER ARE MIXED TO PROVIDE A 109.65MHz I-F SIGNAL. C5391 L5390 109.65 MHz I. F. 68nH 33pF *T5381*...
Schematics, Component Location Diagrams, and Parts Lists: HUE4040A (UHF Range 2) Main Board 7-119 Coming From Abacus Going to Frontend RX_FILT_1 RX_FILT_1_A RF_ATTN_1_ C RF_ATTN_1_B RF_ATTN_2_ C RF_ATTN_2_B RF_ATTN_3_ C RF_ATTN_3_B R5405 5V_IF C5431 C5432 C5420 9.3V_FROM_BE .01uF 0.1uF 220pF E5400 Q5402 9.3V_FROM_FE...
7-124 Schematics, Component Location Diagrams, and Parts Lists: HUE4040A (UHF Range 2) Main Board R0530 SOFT_TURN_OFF DC DISTRIBUTION 330K Q0507 UNSW_5V UNSW_5V V(operating)/mA(max) SOURCED BY: SUPPLY FOR: VOLTAGE Emergency Sense Block R0531 Q0502 100K Battery SW_B+ Audio PA FILT_B+ SW_B+_ON-OFF R0523 SW_B+_ON-OFF R0500...
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7-136 Schematics, Component Location Diagrams, and Parts Lists: HUE4040A (UHF Range 2) Main Board Reference Motorola Reference Motorola Reference Motorola Description Description Description HUE4040A Main Board Parts List Designator Part Number Designator Part Number Designator Part Number Reference Motorola C0221 2311049A78 CAP TANT CHIP 10.0 UF 10%...
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Schematics, Component Location Diagrams, and Parts Lists: HUE4040A (UHF Range 2) Main Board 7-137 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C0505 2113743L41...
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7-138 Schematics, Component Location Diagrams, and Parts Lists: HUE4040A (UHF Range 2) Main Board Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C0986 2113743M24...
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Schematics, Component Location Diagrams, and Parts Lists: HUE4040A (UHF Range 2) Main Board 7-139 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C5348 2113743L01...
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7-140 Schematics, Component Location Diagrams, and Parts Lists: HUE4040A (UHF Range 2) Main Board Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C5714 2111078B01 CAP CHIP RF 3.3 .25 NPO...
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Schematics, Component Location Diagrams, and Parts Lists: HUE4040A (UHF Range 2) Main Board 7-141 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C5925 2113743N50...
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7-142 Schematics, Component Location Diagrams, and Parts Lists: HUE4040A (UHF Range 2) Main Board Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number L5256 2484562T02...
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Schematics, Component Location Diagrams, and Parts Lists: HUE4040A (UHF Range 2) Main Board 7-143 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number Q5253 4813824A17 XSTR PNP40V .2A GENP...
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7-144 Schematics, Component Location Diagrams, and Parts Lists: HUE4040A (UHF Range 2) Main Board Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number R0739 0662057M50 RES.
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Schematics, Component Location Diagrams, and Parts Lists: HUE4040A (UHF Range 2) Main Board 7-145 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number R5512 0662057M10 RES.
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5185143E67 INTEGRATED CIRCUITS Note: For optimum performance, diodes, transistors and U0610 5113805B78 IC 1 GATE 2 INPUT NAND integrated circuits must be ordered by MOTOROLA part U0203 5162852A79 IC MOS TTL SPDT ANALOG U0611 5113805B78 IC 1 GATE 2 INPUT NAND numbers.
7-156 Schematics, Component Location Diagrams, and Parts Lists: HUF4017A (700-800 MHz) Main Board UNSW_5V TP0500 DC DISTRIBUTION D0501 Q0502 Emergency Sense Block VOLTAGE V(operating)/mA(max) SOURCED BY: SUPPLY FOR Part Series FILT_B+ Battery SW_B+ Audio PA R0500 R0502 100K 390K VCC1.8, VCC1.55 1.86 &...
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7-180 Schematics, Component Location Diagrams, and Parts Lists: HUF4017A (700-800 MHz) Main Board HUF4017A Main Board Parts List Reference Motorola Reference Motorola Reference Motorola Description Description Description Designator Part Number Designator Part Number Designator Part Number Reference Motorola Description C0216...
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Schematics, Component Location Diagrams, and Parts Lists: HUF4017A (700-800 MHz) Main Board 7-181 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C0459 2113743N38 CAP CHIP 33.0 PF 5%...
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7-182 Schematics, Component Location Diagrams, and Parts Lists: HUF4017A (700-800 MHz) Main Board Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C0981 2113743M24 CAP CHIP 100000 PF +80-...
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Schematics, Component Location Diagrams, and Parts Lists: HUF4017A (700-800 MHz) Main Board 7-183 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C6501 2113743N40 CAP CHIP 39.0 PF 5%...
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7-184 Schematics, Component Location Diagrams, and Parts Lists: HUF4017A (700-800 MHz) Main Board Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number C6833 2113743L41 CAP CHIP 10000 PF 10%...
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Schematics, Component Location Diagrams, and Parts Lists: HUF4017A (700-800 MHz) Main Board 7-185 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number Q6253 4813824A10 TSTR NPN 40V .2A GEN...
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7-186 Schematics, Component Location Diagrams, and Parts Lists: HUF4017A (700-800 MHz) Main Board Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number R0901 0662057M96 RES. CHIP 8200 5%...
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Schematics, Component Location Diagrams, and Parts Lists: HUF4017A (700-800 MHz) Main Board 7-187 Reference Motorola Reference Motorola Reference Motorola Reference Motorola Description Description Description Description Designator Part Number Designator Part Number Designator Part Number Designator Part Number R6761 0662057M67 RES. CHIP 510 5% 20X40...
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7-188 Schematics, Component Location Diagrams, and Parts Lists: HUF4017A (700-800 MHz) Main Board Reference Motorola Description Designator Part Number VR0418 4813832C75 DIODE ZENER QU O VR0420 4813830A24 DIODE 11V 5% 225MW MMBZ5241B_ VR0421 4813830A24 DIODE 11V 5% 225MW MMBZ5241B_ VR0422...
Flex Cable Pin-Out Lists: List of Flex Cables Chapter 8 Flex Cable Pin-Out Lists List of Flex Cables Table 8-2. Rear Accessory Flex Cable J2 to P0402 Pin-Out List This chapter lists the pin-out assignments for the following flex cables: P0402 •...
Crystal orders should specify the crystal type number, crystal and carrier frequency, and the model number in which the part is used. Motorola Online Motorola Online users can access our online catalog at https://www.motorola.com/businessonline To register for online access, please call 800-814-0601 (for U.S. and Canada Service Centers only).
Replacement Parts Ordering Fax Orders Fax Orders Radio Products and Services Division* (United States and Canada) 1-800-622-6210 847-576-3023 (International) USFGMD (Federal Government Orders) 1-800-526-8641 (For Parts and Equipment Purchase Orders) Parts Identification Radio Products and Services Division* (United States and Canada) 1-800-422-4210, menu 3 Product Customer Service Customer Response Center...
Glossary Glossary This glossary contains an alphabetical listing of terms and their definitions that are applicable to ASTRO portable and mobile subscriber radio products. Term Definition See analog-to-digital conversion. ABACUS IC A custom integrated circuit providing a digital receiver intermediate frequency (IF) backend.
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Glossary-2 Term Definition coder/decoder A device that encodes or decodes a signal. See Customer Programming Software. Customer Software with a graphical user interface containing the feature set of an Programming ASTRO radio. See also RSS. Software See digital-to-analog conversion. See digital-to-analog converter. default A pre-defined set of parameters.
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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.
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SPI data line from a peripheral to the MCU. Master Out Slave In SPI data line from the MCU to a peripheral. See microcontroller unit. Motorola Digital Communications. MCU/DSP Interface internal to the Patriot IC. See Megahertz. Megahertz One million cycles per second. Used especially as a radio-frequency unit.
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Data transmitted on the control channel from the central controller to the word subscriber unit. over-molded pad- A Motorola custom IC package, distinguished by the presence of solder array carrier balls on the bottom pads. over-the-air rekeying Allows the dispatcher to remotely reprogram the encryption keys in the radio.
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Glossary-6 Term Definition See phase-locked loop. private-line tone A continuous sub-audible tone that is transmitted along with the carrier. squelch See also DPL. Programmable A memory chip on which data can be written only once. Once data has Read-Only Memory been written onto a PROM, it remains there forever.
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Glossary-7 Term Definition RESET Reset line: an input to the microcontroller that restarts execution. See radio frequency. RF PA See radio frequency power amplifier. See Radio Interface Box. See read-only memory. RPCIC Regulator/power control IC. RPT/TA See repeater/talkaround. See Radio Service Software. See real-time clock.
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Glossary-8 Term Definition SRAM See static RAM. SRIB Smart Radio Interface Box. See RIB. See Synchronous Serial Interface. Standby mode An operating mode in which the radio is muted but still continues to monitor data. static RAM A type of memory used for volatile, program/data memory that does not need to be refreshed.
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Glossary-9 Term Definition See Universal Serial Bus. See voltage-controlled oscillator. vector sum excited A voice-encoding technique used in ASTRO digital voice. linear predictive coding Very-High Frequency. Vehicle Interface Port. VOCON See vocoder/controller. vocoder An electronic device for synthesizing speech by implementing a compression algorithm particular to voice.
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Glossary-10 Notes June 15, 2005 6815854H01-A...
Index-i Index Index overview ............. 2-5 380-470 MHz band ABACUS III IC ..........3-25 IF filter .............. 3-25 overview ............. 2-6 Numerics theory of operation ........... 3-24 450-520 MHz band 1st local oscillator (LO) ABACUS III IC ..........3-26 136-174 MHz band ..........3-49 IF filter ..............
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Index-ii no 16.8 MHz reference oscillator frequency ..5-24 no TX audio ............5-34 poor RX sensitivity or no RX audio ....5-25 daughtercard module RFPA power control-no VGBIAS ...... 5-42 overview ............... 2-10 RFPA-no or low TX power output ..... 5-37 theory of operation ..........
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Index-iii transmitter VCOs ..........3-57 voltage multiplier ..........3-55 700-800 MHz band handling precautions ..........4-1 charge pump bias ..........3-60 harmonic filter description ............2-8 136-174 MHz band ..........3-31 lock detect ............3-60 380-470 MHz band ..........3-35 loop filter ............
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Index-iv 700-800 MHz band ..........3-23 mobile model chart 700-800 MHz ............xxix main board UHF Range 1 ............xxvii 136-174 MHz band UHF Range 2 ............xxviii major sections ............ 3-8 VHF ............... xxvi theory of operation mode FGU .............. 3-45 analog ..............
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Index-v 700-800 MHz band ..........3-59 publications, related ............ xx out-of-lock condition, VCO ......... 4-7 overview, radio ............2-1 radio 136-174 MHz band parts back-end receiver ..........2-5 list DC power distribution ........3-16 main board frequency generation unit ........2-7 136-174 MHz band ........