Motorola GP88s Service Manual
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Motorola GP88s Service Manual

Motorola GP88s Service Manual

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GP88s
Portable Radio
Service Manual
6804111J47-D
November, 2003

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Summary of Contents for Motorola GP88s

  • Page 1 GP88s Portable Radio Service Manual 6804111J47-D November, 2003...

  • Page 2: Computer Software Copyrights

    Accordingly, any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola prod-...
  • Page 3 Document History Document History The following major changes have been implemented in this manual since the previous edition: Edition Description Date 6804111J47-D Updated the mechanical parts list and exploded view. Nov. 2003...
  • Page 4 Document History THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 5: Safety Information

    Your Motorola two-way radio has an RF exposure information label in the battery compartment. This user safety booklet includes useful information about RF exposure and helpful instructions on how to control your RF exposure.
  • Page 6 RF exposures decrease with distance from the antenna. • For body-worn operation, always place the radio in a Motorola-approved clip, holder, holster, case, or body harness for this product. Using non–Motorola-approved accessories may result in exposure levels which exceed the FCC’s occupational/controlled environment RF exposure lim- its.
  • Page 7 Safety Information Medical Devices Pacemakers The Advanced Medical Technology Association (AdvaMed) recommends that a minimum separation of 6 inches (15 centimeters) be maintained between a handheld wireless radio and a pacemaker. These recommendations are consistent with those of the U.S. Food and Drug Administration. Persons with pacemakers should: •...

  • Page 8: Operational Warnings

    viii Safety Information Operational Warnings For Vehicles With An Air Bag Do not place a portable radio in the area over an air bag or in the air bag deployment area. Air bags inflate with great force. If a portable radio is placed in the air bag deployment area and the air bag inflates, the radio may be propelled with great force and cause serious injury to occupants of the vehicle.

  • Page 9: Repair Of Fmrc Approved Products

    • Do not disassemble an FMRC Approved Product in any way that exposes the internal circuits of the unit. Radios must ship from the Motorola manufacturing facility with the hazardous atmosphere capability and FM Approval labeling. Radios will not be “upgraded” to this capability and labeled in the field. A modification changes the unit’s hardware from its original design configuration.

  • Page 10: Do Not Substitute Options Or Accessories

    FMRC Approved model. Do Not Substitute Options or Accessories The Motorola communications equipment certified by Factory Mutual is tested as a system and consists of the FM Approved portable, FM Approved battery, and FM Approved accessories or options, or both. This FM Approved portable and battery combination must be strictly observed.

  • Page 11: Table Of Contents

    Table of Contents Section SAFETY INFORMATION Section 1 Introduction 1.0 Scope of Manual....................1-1 2.0 Warranty and Service Support................1-1 2.1 Warranty Period and Return Instructions ............1-1 2.2 After Warranty Period..................1-1 2.3 Piece Parts ..................... 1-2 2.4 Technical Support ..................1-3 3.0 Radio Model Information..................
  • Page 12 8.1 Configuring the Radio after Option Board Installation ........4-15 8.2 Additional Configuration required by the DTMF Option Board .....4-16 9.0 Mechanical View and Parts List .................4-17 9.1 GP88s Exploded View and Parts List ............4-17 Section 5 Transceiver Performance Testing 1.0 Introduction ......................5-1 2.0 Setup........................5-1...
  • Page 13 xiii Controller ASFIC/ON_OFF Schematic Diagram ............ 7-6 Controller Micro Processor Schematic Diagram ............ 7-7 Controller Memory Schematic Diagram ..............7-8 Controller Audio Power Amplifier Schematic Diagram ........... 7-9 Controller Interface Schematic Diagram .............. 7-10 3.4 Controller Schematics (403-470MHz for 8480672Z04, Z06 & 136-174MHz for 8480675Z03, Z04)7-11 Complete Controller Schematic Diagram .............
  • Page 14 UHF Transmitter Schematic Diagram ..............9A-20 UHF Harmonic Filter Schematic Diagram............9A-21 UHF Radio Parts List ..................9A-22 8.0 Circuit Board/Schematic Diagrams and Parts List .......... 9A-25 UHF (403-470MHz) Main Board Top Side PCB No. 8480672Z04..... 9A-25 UHF (403-470MHz) Main Board Bottom Side PCB No. 8480672Z04 ....9A-26 UHF Controls And Switches Schematic Diagram ..........
  • Page 15 5.2 VCO - Voltage Controlled Oscillator............9B-10 6.0 Notes For All Schematics and Circuit Boards..........9B-12 7.0 Circuit Board/Schematic Diagrams and Parts List...........9B-13 VHF (136-174MHz) Main Board Top Side PCB No. 8480675Z01 .....9B-13 VHF (136-174MHz) Main Board Bottom Side PCB No. 8480675Z01 ....9B-14 VHF Controls And Switches Schematic Diagram..........9B-15 VHF Receiver Front End Schematic Diagram............9B-16 VHF Receiver Back End Schematic Diagram ............9B-17...
  • Page 16 4.0 Parts List for Speaker/Mic Assembly - 0104008J99 ..........10-2 Glossary of Terms ..................G-1...

  • Page 17: Introduction

    In instances where the product is covered under a "return for replacement" or "return for repair" warranty, a check of the product should be performed prior to shipping the unit back to Motorola. This is to ensure that the product has been correctly programmed or has not been subjected to damage outside the terms of the warranty.

  • Page 18: Piece Parts

    Aftermarket Division (AAD). If no part number is assigned, the part is not normally available from Motorola. If the part number is appended with an asterisk, the part is serviceable by Motorola Depot only. If a parts list is not included, this generally means that no user-serviceable parts are available for that kit or assembly.

  • Page 19: Technical Support

    Technical support is available to assist the dealer/distributor in resolving any malfunction which may be encountered. Initial contact should be by telephone wherever possible. When contacting Motorola Technical Support, be prepared to provide the product model number and the unit’s serial number.

  • Page 20: Radio Model Information

    Table 1-1 Radio Model Number (Example: AZH34KDC9AA3) Type Model Freq. Power Physical Channel Feature Protocol Series Band Level Packages Spacing Level Unit 4-5W GP88s Programma- Conventional GP88s (136- MHz) (403- MHz) H = Portable AZ = Country Code...

  • Page 21: Accessories

    Section 2 ACCESSORIES Antennas PMAD4012A VHF 9cm Antenna (136-155 MHz) PMAD4025A VHF 9cm Antenna (150-161 MHz) PMAD4013A VHF 9cm Antenna (155-174 MHz) PMAD4023A VHF 14cm Antenna (150-161 MHz) PMAD4014A VHF 14cm Antenna (136-155 MHz) PMAD4015A VHF 14cm Antenna (155-174 MHz) PMAE4002A UHF 9cm Antenna (403-433 MHz) (Stubby) PMAE4003A...

  • Page 22: Audio Accessories

    Manuals 6804111J46 GP88s User Guide 6804111J47 GP88s Service Manual 6804111J48 GP88s Selling Guide PMLN4357A GP88s Product Manual Retrofit Kit PMLN4352A GP88s Keypad Retrofit Kit 10.0 Service Kits PMKN4004 Programming/Test Cable PMKN4003 Cloning Cable 0180305H20 Battery Eliminator 8180384J58 Housing Eliminator PMVN4047...

  • Page 23: Service Aids

    Section 3 SERVICE AIDS Recommended Test Tools Table 3-1 lists the tools recommended for working on this family of radios. These tools are also available from Motorola. Table 3-1 Recommended Test Tools Motorola Part No. Description Application 6680387A59 Extractor, 2-contact...

  • Page 24: Service Aids

    Service Aids Service Aids Table 3-2 lists service aids recommended for working on the GP88s Radios. While all of these items are available from Motorola, most are standard shop equipment items, and any equivalent item capable of the same performance may be substituted for the item listed.

  • Page 25: Test Equipment

    Test Equipment Test Equipment Table 3-3 lists test equipment required to service the GP88s Radios and other two-way radios. Table 3-3 Recommended Test Equipment Motorola Part Description Characteristics Application R2000, R2400, Service Monitor This monitor will Frequency/deviation meter or R2001 with...

  • Page 26: Programming/Test Cable

    Programming/Test Cable Programming/Test Cable 25 POSITION 25 POSITION MALE CONNECTOR FEMALE CONNECTOR 36.0” CABLE 36.0” CABLE Figure 3-1 Programming/Test Cable 25 ways Female “D” Connector Components molded inside 2.5mm stereo and 3.5mm Orange 3.5mm Tip (Speaker +) Blue 3.5mm Sleeve White 2.5mm Tip (Microphone)
  • Page 27 Programming/Test Cable For front-end tuning use only Figure 3-3 Front-end Filter Tuning Using 3rd Battery Contact Figure 3-4 Battery Terminals...
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  • Page 29: Maintenance

    Section 4 MAINTENANCE Introduction This chapter provides details about the following: Preventive maintenance (inspection and cleaning) • • Safe handling of CMOS and LDMOS devices • • • Disassembly and reassembly of the radio • Repair procedures and techniques • •...

  • Page 30: Safe Handling Of Cmos And Ldmos Devices

    Wear a conductive wrist strap in series with a 100k resistor to ground. (Replacement • • wrist straps that connect to the bench top covering are Motorola part number RSX- 4015.) Do not wear nylon clothing while handling CMOS devices.

  • Page 31: Repair Procedures And Techniques - General

    When damaged parts are replaced, identical parts should be used. If the identical replacement part is not locally available, check the parts list for the proper Motorola part number and order the part from the nearest Motorola Communications parts center listed in the “Piece Parts” section of this manual.

  • Page 32: Disassembling And Reassembling The Radio - General

    • • keypad retainer tool • • TORX™ T6 screwdriver • • If a unit requires more complete testing or service than is customarily performed at the basic level, send this unit to a Motorola Authorized Service Center.

  • Page 33: Radio Disassembly - Detailed

    Radio Disassembly — Detailed The following disassembly procedures should be performed only if necessary: Chassis Assembly Disassembly (Paragraph 6.2) Keypad/Option Board Disassembly (Paragraph 6.3) Speaker, Microphone, and Wire Disassembly (Paragraph 6.4) PTT Disassembly (Paragraph 6.5) Control Top Disassembly (Paragraph 6.6) Radio Disassembly —...
  • Page 34 Radio Disassembly — Detailed Pull the volume and channel selector knobs off of their shafts. Remove the dust cover. Knobs Figure 4-2 Knob Removal NOTE Both knobs slide on and off. However, they are supposed to fit very tightly on their shafts. Separate the chassis from the internal electronics front cover assembly by using the chassis opener (part number 6680702Z01).

  • Page 35: Chassis Assembly Disassembly

    Radio Disassembly — Detailed Unplug the wires from the 4-pin connector. Jumper Flex Latch Wire Assembly 4-Pin Connector Figure 4-4 Unlatch Flex Connectors Chassis Assembly Disassembly Use a TORX™ screwdriver with a T6 head to remove the four screws holding the main board to the chassis.

  • Page 36: Keypad/Option Board Disassembly

    Radio Disassembly — Detailed Remove the six small O-ring retainers from their slots in the chassis. Note the alignment of the retainers for reassembly. Remove the O-ring. Keypad/Option Board Disassembly If the disassembly of the keypad printed circuit board is required, open the catches on the keypad retainer and lift the wire assembly up.

  • Page 37: Speaker, Microphone, And Wire Disassembly

    Radio Disassembly — Detailed The keypad/option board, and the keypad, can be removed without the use of tools. Retainer Jumper Flex Keypad/Option Board Keypad Radio Housing Wire Assembly Figure 4-7 Removing the Keypad Retainer and Other Boards from the Radio Housing NOTE At this point, the Option Board Installation Procedure should be performed, if necessary.

  • Page 38: Ptt Disassembly

    4-10 Radio Disassembly — Detailed Insulator Speaker Retainer Felt Speaker Microphone Wire Connector Mic Boot Radio Housing Figure 4-8 Removal Speaker-Microphone Assembly When reassembling the microphone in its boot, make sure the microphone port faces the round hole in the bottom of the boot. PTT Disassembly If required, the PTT bezel, and the PTT seal assembly, can be disassembled using a small screwdriver, as follows:...

  • Page 39: Control Top Disassembly

    Radio Reassembly — Detailed 4-11 Control Top Disassembly To remove the control top assembly, place a screwdriver next to the antenna boss, and pry it against the top escutcheon. This will lift the top escutcheon away from the top of the front housing.

  • Page 40: Keypad Option Board, Microphone And Wire Reassembly

    4-12 Radio Reassembly — Detailed Keypad Option Board, Microphone and Wire Reassembly Replace the keypad/option board. Insert the “top hooks” of the keypad retainer into the slots below the speaker in the front cover. Snap all four of the retainer arm tabs in place in the front cover. NOTE Pull the speaker-microphone wire out of harm’s way during reassembly.

  • Page 41: Chassis And Front Cover Reassembly

    Option Board Installation 4-13 Chassis and Front Cover Reassembly Align the chassis assembly end-to-end with the front cover assembly. Insert the tails of the jumper flex and wire assembly into their respective connectors at the bottom of the front cover. Push down the latches on the connectors to hold the flex circuit to the main board.
  • Page 42 4-14 Option Board Installation Retainer Jumper Flex Keypad/Option Board Wire Assembly Figure 4-12 Changing the Keypad/Option Board Reassemble the option board to the front cover assembly. Insert the jumper flex circuit into the connector on the option board. Notice the orientation of the flex circuit.

  • Page 43: Configuring The Radio After Option Board Installation

    Option Board Installation 4-15 Configuring the Radio after Option Board Installation Connect the radio to the computer following instructions outlined in Section 6. Start up the CPS, and read the radio’s codeplug. Open the Radio Configuration dialog box, and proceed to the Option Board tab. From the pull-down menu, choose the option board type that you just installed (choose Simple Decoder for the DTMF option board).

  • Page 44: Additional Configuration Required By The Dtmf Option Board

    4-16 Option Board Installation Additional Configuration required by the DTMF Option Board In the Tree View window of your CPS, expand the Signalling node. Also expand the DTMF System node. Open each of the DTMF System dialog boxes under this node, and fill in the relevant information pertinant to your DTMF system.

  • Page 45: Mechanical View And Parts List

    Mechanical View and Parts List 4-17 Mechanical View and Parts List GP88s Exploded View and Parts List Figure 4-16 GP88s Radio Exploded View...
  • Page 46 4-18 Mechanical View and Parts List Motorola Motorola Item Part Description Item Part Description Number Number See Section 2 Antenna 3380564Z01 Label, Warning 3680690Z01 Knob, Volume See Section Back Cover Kit including 9A & Section chassis main board 3680147S07 Knob, Frequency...

  • Page 47: Transceiver Performance Testing

    Section 5 TRANSCEIVER PERFORMANCE TESTING Introduction The radios have been prepared to meet published specifications through their manufacturing process, with the use of laboratory-quality test equipment of highest accuracy. The recommended field service equipment approaches the accuracy of the manufacturing equipment with a few exceptions.

  • Page 48: Test Mode

    Test Mode Test Mode RF Test Mode When the radio is operating in its normal environment, the radio’s microcontroller controls the RF channel selection, transmitter key-up, and receiver muting. However, when the unit is on the bench for testing, alignment or repair, it is removed from its normal environment. It cannot receive commands from its system and, therefore, the internal microcontroller will not key the transmitter nor unmute the receiver.
  • Page 49 Test Mode Table 5-3 Test Channel Spacing No. of BKC Channel Spacing 25 kHz 12.5 kHz 20 kHz Table 5-4 Test Frequencies Channel Selector Switch Test Channel Position 1 Low Power TX#1 or #8 136.025 403.025 8 High Power RX#1 or #8 136.025 403.025 2 Low Power...
  • Page 50 Test Mode Table 5-5 Receiver Performance Checks Test Communications Radio Test Set Comments Name Analyzer Reference Mode: PWR MON TEST MODE, PTT to continu- Frequency error to be Frequency 4th channel test frequency* Test Channel ous (during the ±200 Hz VHF Monitor: Frequency error 4 carrier performance...
  • Page 51 Test Mode Table 5-6 Transmitter Performance Checks Test Communications Radio Test Set Comments Name Analyzer Reference Mode: PWR MON TEST MODE, PTT to continu- Frequency error to be Frequency 4th channel test frequency* Test Channel ous (during the ±200 Hz VHF Monitor: Frequency error 4 carrier performance...
  • Page 52 Test Mode THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 53: Radio Tuning And Programming

    Section 6 RADIO TUNING AND PROGRAMMING Introduction This chapter provides an overview of the Professional Radios Customer Programming Software (CPS) and Universal Tuner which have been designed for use in a Windows 95 environment. Both these software will essentially cover all the functions of the traditional Radio Service Software (RSS) package.

  • Page 54: Radio Tuning Setup

    Radio Tuning Setup Radio Tuning Setup A Windows 95 PC (personal computer) and Universal Tuner are required to tune the radio. To perform the tuning procedures, the radio must be connected to the PC, RIB (Radio Interface Box) and Universal Test Set as shown in figure below. Refer to online help files for the tuning procedures.

  • Page 55: Cps Programming Setup

    CPS Programming Setup CPS Programming Setup Refer to online help files for the CPS Programming procedures. Radio Test Box RLN4460A Battery Program/ Test Cable PMKN4004A Tx Data Data RLN-4008B Computer Interface Cable RIB Power Supply Figure 6-2 CPS Programming Setup Cloning Information Cloning is the process of copying the content of one radio (source radio) into another radio (target radio).
  • Page 56 Cloning Information THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 57: Controller Information

    Section 7 CONTROLLER INFORMATION Overview This section provides a detailed theory of operation for the radio and its components. Radio Power Distribution Accessory Jacks Keypad/Option Board Audio PA Vdda UNSWB+ Vdda Reg. Fuse SWB+ 7.5V Vddd Vdda Battery Reg. FRACTN ASFIC_CMP MCU Micro P, ROM LVZIF...

  • Page 58: Controller Board

    The controller board is the central interface between the various subsystems of the radio. It is separated into digital and audio architectures. The digital portion consists of a special Motorola microcontroller (HC11FL0). The audio power amplifier (Audio PA) and audio/signalling/filter/ companding IC (ASFIC_CMP) form the backbone of the audio/signalling architecture.

  • Page 59: Digital Architecture

    Controller Board Digital Architecture MCU configuration There is one common MCU architecture for low-tier as well as for the high-tier products. It covers the Conventional and Trunking portables. An open architecture system with the new HC11FL0 as the processor is used. Combinations of different size RAM, ROM and EEPROM are available for various application software.
  • Page 60 Controller Board THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 61: Controller Schematics

    Controller Schematics (403-470MHz for 8480672Z01 & 136-174MHz for 8480675Z01) Dual Vdd Single Vdd Regulator Scheme Regulator Scheme Prime Non Prime Non Prime Prime Jumpers Model Model Model Model R401 R402 IF_RED_LED_CTRL RED_LED RED_LED R403 IF_GREEN_LED_CTRL GREEN_LED GREEN_LED IF_SB1_CTRL R404 IF_SB2_CTRL IF_BATT_CODE_CTRL BATT_CODE BATT_CODE...

  • Page 62: Controller Asfic/On_Off Schematic Diagram

    4V_3.3V RSSI BATT_CODE R462 100K Q419-2 R498 Q431-1 R405 R402 100K R499 R493 R494 SWB+ Vddd Q400 TP406 BATT_PULL_UP UNSWB+ C401 C400 R401 0.1uF .01uF FLAT_SW R406 R427 C443 U400 C402 0.1uF LP2951ACMM-3.3 0.1uF C403 R461 CR412 10uF INPUT OUTPUT 100K FEEDBACK ERROR...

  • Page 63: Controller Micro Processor Schematic Diagram

    Vddd F1200 Vddd R457 Q418 TP401 TEST_POINT R418 4.7K C493 FLAT_SW UNSWB+ Vddd Vddd Vddd R437 C449 C431 C453 C423 100pF 100pF 100pF 100pF L411 390nH U410 L410 ILC7062CM-33 3.3V 390nH C456 R411 VOUT 3 100pF C434 EE_CS 0.1uF C435 R460 0.1uF 4.7K...

  • Page 64: Controller Memory Schematic Diagram

    FLASH ROM Controller Memory Schematic Diagram...

  • Page 65: Controller Audio Power Amplifier Schematic Diagram

    INT_SPN INT_MIC UNSWB+ C475 J402 10uF J402-1 C489 1000pF J402-2 INT_MIC R473 J402-3 INT_SPN J402-4 C442 0.1uF U420 R423 C471 C472 TDA8547 100pF C470 100pF 100pF C447 R472 Speaker/Mic Connector 0.1uF IN1POS OUT1POS 3.6K AUDIO IN1NEG OUT1NEG C486 C488 1000pF 1000pF IN2POS OUT2POS...

  • Page 66: Controller Interface Schematic Diagram

    7-10 Controller Interface Schematic Diagram...

  • Page 67: Controller Schematics

    7-11 Controller Schematics (403-470MHz for 8480672Z04, Z06 & 136-174MHz for 8480675Z03, Z04) IF_RED_LED_CTRL RED_LED RED_LED IF_GREEN_LED_CTRL GREEN_LED GREEN_LED IF_SB1_CTRL IF_SB2_CTRL IF_BATT_CODE_CTRL BATT_CODE BATT_CODE IF_INT_SPN_CTRL INT_SPN INT_SPN IF_SPP_CTRL IF_SPN_CTRL AUDIO IF_MIC_CTRL IF_SCI_CTRL 4V_3.3V 4V_3.3V IF_INT_MIC_CTRL INT_MIC INT_MIC IF_RTA0_CTRL MIC_LINE RTA0 RTA0 Vddd Vddd IF_RTA1_CTRL...

  • Page 68: Controller Asfic/On_Off Schematic Diagram

    7-12 4V_3.3V RSSI BATT_CODE R462 100K 3.28V Q419-2 R498 Q431-1 R405 R402 100K R499 R493 R494 SWB+ Vddd Q400 TP406 BATT_PULL_UP UNSWB+ C401 C400 0.1uF R401 .01uF FLAT_SW R427 R406 C443 U400 C402 0.1uF 7.45V LP2951ACMM-3.3 0.1uF C403 R461 10uF INPUT OUTPUT 100K...

  • Page 69: Controller Micro Processor Schematic Diagram

    7-13 Vddd F1200 Vddd R457 Q418 TP401 1.90V TEST_POINT 3.28V R418 4.7K C493 FLAT_SW UNSWB+ Vddd Vddd Vddd R437 C431 C449 C453 C423 100pF 100pF 100pF 100pF L411 390nH U410 L410 ILC7062CM-33 3.3V 390nH R411 C456 VOUT 3 100pF C434 EE_CS 0.1uF C435...

  • Page 70: Controller Memory Schematic Diagram

    7-14 FLASH ROM Controller Memory Schematic Diagram...

  • Page 71: Controller Audio Power Amplifier Schematic Diagram

    7-15 INT_SPN INT_MIC UNSWB+ C475 J402 10uF J402-1 C489 J402-2 INT_MIC R473 J402-3 INT_SPN J402-4 C442 0.1uF R423 U420 C471 C470 C472 470K(UHF),47K(VHF) TDA8547 100pF(UHF),NU(VHF) 100pF 100pF C447 R472 Speaker/Mic Connector 0.1uF IN1POS OUT1POS 36K(UHF),3.6K(VHF) AUDIO IN1NEG OUT1NEG C486 C488 IN2POS OUT2POS C485...

  • Page 72: Controller Interface Schematic Diagram

    7-16 Controller Interface Schematic Diagram...

  • Page 73: Keypad Board Information

    Section 8 KEYPAD BOARD INFORMATION Theory of Operation Keypad U602 is a comparator that will compare the voltage when any one of the keypad row or keypad column keys is being pressed. Therefore when a key is being pressed, it will send a message to the microprocessor through the output (KEY_INT) telling it that a key has been pressed.

  • Page 74: Parts List (Keypad)

    Parts List (Keypad) Parts List (Keypad) Motorola Circuit Ref Description Part No. C603 2113740F51 100pF C606 2113743E20 0.1uF C607 2113740F51 100pF C609 2113740F51 100pF C610 2113740F51 100pF C611 2113740F51 100pF C612 2113928D08 10uF C613 2113740F51 100pF C614 2113740F51 100pF C615...

  • Page 75: Keypad Board And Schematic Diagram

    Keypad Board And Schematic Diagram Keypad Board And Schematic Diagram M605 M604 M622 M623 M606 M608 J600 R627 R636 C610 C609 M610 M611 M612 TP16 C611 R618 C612 TP15 R634 M613 M614 M615 TP14 C606 M616 M617 M618 R623 R624 C613 M619 M620...

  • Page 76: Keypad Board Schematic Diagram

    Keypad Board And Schematic Diagram J601 44-Pin Connector J601-44 J601-43 J601-42 J601-41 J601-40 FLAT_RX_SND J601-39 J601-38 RX_AUD_RTN J601-37 J601-36 TX_AUD_SND J601-35 TX_AUD_RTN J601-34 J601-33 FLAT_TX_RTN J601-32 OPT_ENA J601-31 J601-30 J601-29 URX_SND J601-28 J601-27 MISO J601-26 J601-25 J600 11-Pin Connector KEYPAD_ROW J601-24 KEYPAD_COL J601-23...

  • Page 77: Section 9A

    Section 9A MODEL CHART AND TEST SPECIFICATIONS (403-470 MHZ) Model Chart GP88s , UHF, 403-470 MHz Model Description AZH34RDC9AA3 GP88s 403-470 MHz 4W 16 CH Item Description PMUE1542* GP88s Super Tanapa 403-470 MHz 4W PMUE1543* GP88s Tanapa 403-470 MHz 4W PMLE4173...

  • Page 78: Specifications

    Transmitter General RF Output High NiMH @ 7.5V: Frequency: 403-470 MHz Frequency 403-470 MHz Channel Capacity: GP88s : 16 Channels Channel Spacing 12.5/20/25 kHz 7.5 Volts ±20% Power Supply: Freq. Stability 0.00025% (-30°C to +60°C) Dimensions with Standard 57.5mm x 134mm x Spurs/Harmonics: -36 dBm <...

  • Page 79: Transmitter

    Transmitter 9A-3 Transmitter P C I C Antenna Vcontrol Vcontrol Jack Antenna Switch/ From VCO PA-Final Harmonic Filter/ Driver Stage Matching Network Figure 9-1 Transmitter Block Diagram General (Refer to Figure 9-1) The UHF transmitter contains five basic circuits: 1. power amplifier 2.

  • Page 80: Antenna Switch

    9A-4 Transmitter 3.1.2 Antenna Switch The antenna switch circuit consists of two PIN diodes (CR101 and CR102), a pi network (C107, L104 and C106). In the transmit mode, B+ at PCIC (U102) pin 23 will go low and turn on Q111 where a B+ bias is applied to the antenna switch circuit to bias the diodes "on".

  • Page 81: Receiver

    Receiver 9A-5 Receiver Antenna Pin Diode Varactor Varactor Antenna Crystal RF Amp Mixer IF Amp Tuned Filter Tuned Filter Switch RF Jack Filter First LO from FGU Control Voltage from ASFIC Recovered Audio Demodulator Squelch U301 RSSI Synthesizer 16.8 MHz Reference Clock SPI Bus Second...

  • Page 82: Receiver Back-End

    9A-6 Receiver The output of the post-RF amplifier filter which is connected to the passive double balanced mixer consists of T301, T302 and CR306. Matching of the filter to the mixer is provided by C381. After mixing with the first LO signal from the voltage controlled oscillator (VCO) using low side injection, the RF signal is down-converted to the 45.1 MHz IF signal.

  • Page 83: Automatic Gain Control Circuit

    Receiver 9A-7 Automatic Gain Control Circuit (Refer to UHF Receiver Front End Schematic Diagram on page 9A-16) The front end automatic gain control circuit is to provide automatic gain reduction of the front end RF amplifier via feedback. This action is necessary to prevent overloading of backend circuits. This is achieved by drawing some of the output power from the RF amplifier’s output.

  • Page 84: Frequency Generation Circuitry

    9A-8 Frequency Generation Circuitry Frequency Generation Circuitry Dual Tran- sistor Voltage Multiplier Rx Out Matching Pass Mixer Network Filter VCOBIC Aux3 Rx VCO Circuit Vmult1 U241 Aux4 Synthesizer Vmult2 U201 Loop Filter Tx Out Attenuator PA Driver 16.8 MHz Ref. Osc. MOD Out Tx VCO Circuit Modulating...

  • Page 85: Synthesizer

    Frequency Generation Circuitry 9A-9 Synthesizer (Refer to UHF Synthesizer Schematic Diagram on page 9A-18) The Fractional-N Synthesizer uses a 16.8MHz crystal (FL201) to provide a reference for the system. The LVFractN IC (U201) further divides this to 2.1MHz, 2.225MHz, and 2.4MHz as reference frequencies.

  • Page 86: Vco - Voltage Controlled Oscillator

    9A-10 Frequency Generation Circuitry VCO - Voltage Controlled Oscillator (Refer to UHF Voltage Controlled Oscillator Schematic Diagram on page 9A-19) AUX3 (U201 Pin2) Level Shifter AUX4 (U201 Pin3) Network U201 Pin 32 Prescaler Out TRB_IN Pin 20 Pin 19 Pin 12 Pin7 Rx-SW TX/RX/BS...
  • Page 87 Frequency Generation Circuitry 9A-11 The VCOBIC(U241) is operated at 4.54 V (VSF) and Fractional-N synthesizer (U201) at 3.3V. This difference in operating voltage requires a level shifter consisting of Q260 and Q261 on the TRB line. The operation logic is shown in Table 9-1. Table 9-1 Level Shifter Logic Desired AUX 4...

  • Page 88: Notes For All Schematics And Circuit Boards

    1. Unless otherwise stated, resistances are in Ohms (k = 1000), and capacitances are in picofarads (pF) or microfarads (µF). 2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multime- ter or equivalent. Transmitter measurements should be made with a 1.2 µH choke in series with the voltage probe to prevent circuit loading.

  • Page 89: Circuit Board/Schematic Diagrams And Parts List

    Circuit Board/Schematic Diagrams and Parts List Circuit Board/Schematic Diagrams and Parts List R410 PB504 PB502 PB501 R437 SH323 R300 R352 VR440 C397 FL201 RT301 R314 R321 C527 C328 C363 VR501 C325 R335 C362 U405 TP201 U406 R338 L325 C528 J400 R325 C385 C351...

  • Page 90: Uhf (403-470Mhz) Main Board Bottom Side Pcb No. 8480672Z01

    Circuit Board/Schematic Diagrams and Parts List VR441 VR506 SH402 C522 C489 C345 C278 L330 C359 C338 S502 C330 C277 C358 C357 C326 R350 C344 R463 C390 CR501 CR414 R344 C327 C383 C360 U301 R311 R415 C346 B501 C361 R312 R414 U409 C343 C329...

  • Page 91: Uhf Controls And Switches Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List PB501 SWITCH UNSWB+ VR451 J407 VR450 F501 C521 10.0V VR440 10.0V B501 .01uF 6.8V SWITCH S502 MECH_SWB+ C500 PB504 C503 TAB2 RSSI_FIL C502 CR501 1000pF SWITCH 100pF L505 0.47uF 390nH TAB1 BATT_CODE VR439 VR444 6.8V VR506 6.8V...

  • Page 92: Uhf Receiver Front End Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List DACRx C322 82pF R342 100K L310 150nH R308 R305 C314 C315 R310 0.1uF 100pF R304 C380 R309 .01uF L304 CR306 C321 180nH 100pF C306 T301 XFMR C309 C308 100pF R306 R307 100pF 100K C312 100K C310 C316...

  • Page 93: Uhf Receiver Back End Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List L331 R343 2.2uH Vdd_FILTERED Vdda C382 (SOURCE) 10uF DEMOD R350 C348 C347 C344 C346 C345 100K 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF C390 C329 100pF 0.1uF C343 0.22uF R344 R355 SH323 SH321 SH322 SHIELD SHIELD SHIELD Q320 C383...

  • Page 94: Uhf Synthesizer Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List U210 U211 TC7SET04FU TC7SET04FU C265 C257 C296 100pF 0.1uF C256 100pF C258 .01uF U247 ADP3300 SWB+ C259 C299 .01uF 100pF (SOURCE) CR201 C291 C294 C293 0.47uF L202 4V_3.3V 100pF 0.47uF U248 2.2uH LP2980 L203 C277 C278 2.2uH...

  • Page 95: Uhf Voltage Controlled Oscillator Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List C281 R245 100pF R242 L243 C250 RESONATOR 7.5pF C276 C285 C286 2.2uF 100pF 0.1uF C246 100pF L281 L273 R241 390nH 33nH C242 7.5pF C272 C273 0.1uF C243 L271 L242 R244 7.5pF 68nH 220nH C245 RX_INJ 2.4pF TX_INJ...

  • Page 96: Uhf Transmitter Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List E101 BEAD R102 UNSWB+ L107 C114 C123 33.47nH 100pF 10uF C172 0.1uF UNSWB+ R106 C109 L106 100pF 7.66nH Microstrip Microstrip R172 L108 L109 C121 C160 L112 TX_OUT 11.03nH 100pF 100pF 390nH 4.22nH Q110 Microstrip C118 100pF C130...

  • Page 97: Uhf Harmonic Filter Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List ANT_BIAS C108 L105 100pF 390nH C142 C143 RF_JACK 2.7pF J101 C101 RF_JACK L102 L101 100pF CR101 15.22nH 15.22nH TX_OUT C104 C102 C103 5.6pF 6.8pF C141 L104 L116 15.22nH 9.75nH RX_IN CR102 ANTENNA_CONTACT C107 J104 C106 3.9pF C140...

  • Page 98: Uhf Radio Parts List

    Circuit Board/Schematic Diagrams and Parts List UHF Radio Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola Description C172 2113740F51 100pF C276 2104993J02 2.2uF C340 2180478Z20 1.0uF Part No. C173 2113743M08 0.022uF...
  • Page 99 Circuit Board/Schematic Diagrams and Parts List Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C420 2113743L41 0.01uF C486 2113743L17 1000pF CR440 4813833C02 Dual Diode Common Cathode L309 2479990C02 16.28nH...
  • Page 100 2680514Z01 Shield, VCO Bottom/LVZIF 8480672Z01 UHF B1 PC Board R300 0662057M82 2.2K R416 0662057N13 SH301 2680554Z01 RX Pre Filter Shield * Motorola Depot Servicing only R301 0662057N23 100K R418 0662057M01 SH302 2680555Z01 RX Post Filter/RX AMP R302 0662057N23 100K R419...

  • Page 101: Circuit Board/Schematic Diagrams And Parts List

    Circuit Board/Schematic Diagrams and Parts List Circuit Board/Schematic Diagrams and Parts List C521 PB501 C423 PB502 PB504 R410 C505 R437 R418 SH323 R300 VR444 R352 VR451 VR440 C502 C397 R351 VR450 VR431 FL201 R334 RT301 R314 FL301 CR310 R321 R316 C363 VR501 C328...

  • Page 102: Uhf (403-470Mhz) Main Board Bottom Side Pcb No. 8480672Z04

    Circuit Board/Schematic Diagrams and Parts List VR441 VR506 C489 C278 L330 C359 C382 C277 S502 C338 C358 B501 C357 R350 C344 Q302 C390 U248 CR501 R344 C383 R415 C360 R311 C346 U301 R414 C361 R312 U409 C494 C343 C433 SH202 C431 C208 C263...

  • Page 103: Uhf Controls And Switches Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List PB501 SWITCH VR440 UNSWB+ C521 6.8V .01uF F501 mgc_comps S502 MECH_SWB+ B501 PB504 C503 TAB2 RSSI_FIL 100pF C500 SWITCH CR501 L505 C502 1000pF HIGH 390nH 0.47uF VR439 TAB1 BATT_CODE VR444 VR450 VR451 6.8V 10.0V 10.0V VR506 6.8V...

  • Page 104: Uhf Receiver Front End Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List DACRx C322 82pF R342 100K L310 150nH C315 R308 R310 R305 C314 0.1uF 100pF R304 R309 C380 .01uF L304 C321 CR306 180nH 100pF C306 T301 XFMR C309 C308 R307 R306 100pF 100pF 100K 100K C312 C310 C316...

  • Page 105: Uhf Receiver Back End Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List R343 L331 2.20uH Vdd_FILTERED Vdda C382 (SOURCE) 10uF DEMOD R350 C348 C347 C345 C344 C346 100K 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF C390 100pF C329 0.1uF C343 0.22uF R344 R345 R355 C383 100pF C342 C357 C384 0.22uF Q320...

  • Page 106: Uhf Synthesizer Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List U211 U210 TC7ST04FU TC7ST04FU C265 C257 C296 0.1uF 100pF C256 100pF C258 .01uF U247 ADP3300 C299 100pF SWB+ C259 .01uF (SOURCE) CR201 C291 10.0uF C294 C293 4V_3.3V L202 100pF 0.47uF U248 2.2uH LP2980 L203 C277 C278 2.2uH...

  • Page 107: Uhf Voltage Controlled Oscillator Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List C281 R245 100pF R242 C250 L243 C276 C285 C286 7.5pF 2.2uF 100pF 0.1uF RESONATOR C246 L281 L273 R241 100pF 390nH 33nH C242 7.5pF C272 C273 0.1uF C243 L271 L242 R244 7.5pF 220nH 68nH RX_INJ C245 2.4pF TX_INJ...

  • Page 108: Uhf Transmitter Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List E101 BEAD R102 UNSWB+ L107 C114 C123 33.47nH 100pF 10uF C172 UNSWB+ 100pF R106 C109 L106 100pF 7.66nH Microstrip Microstrip R172 TX_OUT C121 L108 R105 C160 L112 Q110 100pF 100pF 4.22nH 22nH R176 C118 100pF C111 C112...

  • Page 109: Uhf Harmonic Filter Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List ANT_BIAS C108 L105 390nH 100pF C142 C143 2.7pF J101 C101 RF_JACK L101 L102 CR101 100pF 15.22nH 15.22nH TX_OUT C102 C104 C103 6.8pF 5.6pF L104 L116 C141 15.22nH 17.02nH 3.3pF RX_IN CR102 CR160 ANTENNA_CONTACT C106 C107 J104 3.9pF...

  • Page 110: Uhf Radio Parts List

    Circuit Board/Schematic Diagrams and Parts List UHF Radio Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola Description C172 2113740F51 100pF C265 Not Placed C330 2113743N26 10pF Part No. C173 2113743M08 0.022uF...
  • Page 111 Circuit Board/Schematic Diagrams and Parts List Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C397 2311049A05 0.47uF C472 2113743N50 100pF CR203 4862824C03 Varactor L242 2462587V38 220nH C400 2113743L41 0.01uF...
  • Page 112 Circuit Board/Schematic Diagrams and Parts List Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. Q419 5180159R01 Dual NPN Transistor R256 0662057M37 R351 0662057C01 R478 0662057M98 Q420 4805128M67 PNP Transistor...
  • Page 113 4802245J73 6.8V Zener VR441 4802245J73 6.8V Zener VR444 4802245J73 6.8V Zener VR450 4802245J74 10V Zener VR451 4802245J74 10V Zener VR501 4813830A18 6.8V Zener VR506 4802245J73 6.8V Zener 1485777Z01 Insulator (Kapton) 8480672Z04 UHF B1 PC Board * Motorola Depot Servicing only...

  • Page 114: Circuit Board/Schematic Diagrams And Parts List

    Circuit Board/Schematic Diagrams and Parts List Circuit Board/Schematic Diagrams and Parts List C521 C423 R410 PB504 PB502 PB501 C505 R437 R418 SH323 R300 R352 VR444 VR451 VR440 C502 C455 C397 C446 FL201 R334 R316 R314 RT301 R321 FL301 CR310 R510 VR501 C328 C363...

  • Page 115: Uhf (403-470Mhz) Main Board Bottom Side Pcb No. 8480672Z06

    Circuit Board/Schematic Diagrams and Parts List VR441 SH402 C489 C278 L330 C359 S502 C338 C277 C358 C357 R350 C344 C390 CR501 R344 B501 C383 C360 R311 R415 U301 C346 C361 R312 R414 C343 U409 C494 SH202 C433 C431 C263 C208 Q418 L261 C264...

  • Page 116: Uhf Controls And Switches Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List PB501 SWITCH 1 A1 3 A2 F501 UNSWB+ SWITCH mgc_comps B501 C521 VR440 .01uF .01uF S502 6.8V MECH_SWB+ PB504 C500 SWITCH TAB2 RSSI_FIL 1000pF VR439 C502 L505 TAB1 1 A1 0.47uF C503 BATT_CODE 3 A2 390nH 100pF VR444...

  • Page 117: Uhf Receiver Front End Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List DACRx C322 82pF R342 100K L310 150nH C315 R308 R310 R305 C314 0.1uF 100pF R304 R309 C380 .01uF L304 C321 CR306 180nH 100pF C306 T301 XFMR C309 C308 R307 R306 100pF 100pF 100K 100K C312 C310 C316...

  • Page 118: Uhf Receiver Back End Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List R343 L331 2.20uH Vdd_FILTERED Vdda C382 (SOURCE) 10uF DEMOD R350 C348 C347 C345 C344 C346 100K 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF C390 100pF C329 0.1uF C343 0.22uF R344 R345 R355 C383 100pF C342 C357 C384 0.22uF Q320...

  • Page 119: Uhf Synthesizer Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List U211 U210 TC7ST04FU TC7ST04FU C265 C257 C296 0.1uF 100pF C256 100pF C258 .01uF U247 ADP3300 C299 100pF SWB+ C259 .01uF (SOURCE) CR201 C291 10.0uF C294 C293 4V_3.3V L202 100pF 0.47uF U248 2.2uH LP2980 L203 C277 C278 2.2uH...

  • Page 120: Uhf Voltage Controlled Oscillator Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List C281 R245 100pF R242 C250 L243 C276 C285 C286 7.5pF 2.2uF 100pF 0.1uF RESONATOR C246 L281 L273 R241 100pF 390nH 33nH C242 7.5pF C272 C273 0.1uF C243 L271 L242 R244 7.5pF 220nH 68nH RX_INJ C245 2.4pF TX_INJ...

  • Page 121: Uhf Transmitter Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List E101 BEAD R102 UNSWB+ L107 C114 C123 33.47nH 100pF 10uF C172 UNSWB+ 100pF R106 C109 L106 100pF 7.66nH Microstrip Microstrip R172 TX_OUT C121 L108 R105 C160 L112 Q110 100pF 100pF 4.22nH 22nH R176 C118 100pF C111 C112...

  • Page 122: Uhf Harmonic Filter Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List ANT_BIAS C108 L105 390nH 100pF C142 C143 2.7pF J101 C101 RF_JACK L101 L102 CR101 100pF 15.22nH 15.22nH TX_OUT C102 C104 C103 6.8pF 5.6pF L104 L116 C141 15.22nH 17.02nH 3.3pF RX_IN CR102 CR160 ANTENNA_CONTACT C106 C107 J104 3.9pF...

  • Page 123: Uhf Radio Parts List

    Circuit Board/Schematic Diagrams and Parts List UHF Radio Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola Description C172 2113740F51 100pF C265 Not Placed C330 2113743N26 10pF Part No. C173 2113743M08 0.022uF...
  • Page 124 Circuit Board/Schematic Diagrams and Parts List Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C397 2311049A05 0.47uF C472 2113743N50 100pF CR203 4862824C03 Varactor L243 2460593C01 Teflon Resonator, Rx...
  • Page 125 Circuit Board/Schematic Diagrams and Parts List Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. Q420 4805128M67 PNP Transistor R260 0662057M74 R352 0662057M86 3.3K R481 0662057N08 Q421 4880214G02 NPN Transistor...
  • Page 126 4802245J73 6.8V Zener VR441 4802245J73 6.8V Zener VR444 4802245J73 6.8V Zener VR450 4802245J74 10V Zener VR451 4802245J74 10V Zener VR501 4813830A18 6.8V Zener VR506 4802245J73 6.8V Zener 1485777Z01 Insulator (Kapton) 8480672Z06 UHF B1 PC Board * Motorola Depot Servicing only...

  • Page 127: Troubleshooting Charts

    Troubleshooting charts 9A-51 10.0 Troubleshooting charts MCU Check Press PTT. Red LED does not Before replacing light up Power Up Not able to pro- MCU, check SPI Audio at Alert Tone gram RF Board AUDIO clock, SPI data, Audio PA J402 Audio and RF IC select (U420) input...

  • Page 128: Troubleshooting Flow Chart For Receiver (Sheet 1 Of 2)

    9A-52 Troubleshooting charts START Bad SINAD Bad 20dB Quieting No Recovered Audio Audio at pin Check Controller 27 of U301? Spray of inject 1st IF into XTAL Filter IF Freq: 45.1MHz Check Q320 bias circuitry for faults. Audio heard? Rotate Freq. Knob Check 2nd LO Control Voltage at C363 Activity...

  • Page 129: Troubleshooting Flow Chart For Receiver (Sheet 2 Of 2)

    Troubleshooting charts 9A-53 Inject RF into J101 Trace IF signal Q302 collec- from L311 to IF Signal at tor OK? Q302. Check for L311? IF signal bad XTAL filter. present? Before replacing U301, check U301 voltages; 1st LO O/P trace IF signal RF Signal at Check FGU path.

  • Page 130: Troubleshooting Flow Chart For Transmitter

    9A-54 Troubleshooting charts START No Power Is There B+ Bias for Check Q111 Ant switch CR101 Is Control Voltage Check PCIC Is Current High or Low at C119 High Check Drive to Module 1. Check Pin Diodes 2. Check Harmonic Filter Is Drive Troubleshoot Inspect/Repair Tx.

  • Page 131: Troubleshooting Flow Chart For Synthesizer

    Troubleshooting charts 9A-55 Check U248, 3.3V at U201 Start L201 & L202 pins 5, 20, 34 & Visual Check CR201, U210, Correct check of the U211, C258, C259 & Problem Board OK? C228 Is U201 Pin 47 Is 16.8MHz 16.8MHz at pin 6 of Replace 13 VDC...

  • Page 132: Troubleshooting Flow Chart For Vco

    9A-56 Troubleshooting charts START Change U241 Change No LO? L253 O/C? L253 U241 TRB = Pin 10 5V? @U241 Tx Carrier? >1V? Pin 19 VCO OK Check R245 for dry joint or faulty AUX 3 Check High? R260 Check U201 Pin 2 for 3.2V Change L243...

  • Page 133: Model Chart

    Section 9B MODEL CHART AND TEST SPECIFICATIONS (136-174 MHZ) Model Chart GP88s , VHF, 136-174 MHz Model Description AZH34KDC9AA3 GP88s 136-174 MHz 5W 16 CH Item Description PMUD1590* GP88s Super Tanapa 136-174 MHz 5W PMUD1591* GP88s Tanapa 136-174 MHz 5W PMLD4162...

  • Page 134: Specifications

    Transmitter General RF Output High NiMH @ 7.5V: Frequency: 136-174 MHz Frequency 136-174 MHz Channel Capacity: GP88s : 16 Channels Channel Spacing 12.5/20/25 kHz 7.5 Volts ±20% Power Supply: Freq. Stability 0.00025% (-30°C to +60°C) Dimensions with Standard 57.5mm x 134mm x Spurs/Harmonics: -36 dBm <...

  • Page 135: Transmitter

    Transmitter 9B-3 Transmitter P C I C Antenna Vcontrol Vcontrol Jack Antenna Switch/ From VCO PA-Final Harmonic Filter/ Driver Stage Matching Network Figure 9-1 Transmitter Block Diagram General (Refer to Figure 9-1) The VHF transmitter contains five basic circuits: 1. power amplifier 2.
  • Page 136 9B-4 Transmitter 3.1.2 Antenna Switch The antenna switch circuit consists of two PIN diodes (D3521 and D3551), a pi network (C3531, L3551 and C3550), and two current limiting resistors (R3571, R3572, R3573 ). In the transmit mode, B+ at PCIC (U3502) pin 23 will go low and turn on Q3561 where a B+ bias is applied to the antenna switch circuit to bias the diodes "on".

  • Page 137: Receiver

    Receiver 9B-5 Receiver Antenna Pin Diode Varactor Varactor Antenna Crystal RF Amp Mixer IF Amp Tuned Filter Tuned Filter Switch RF Jack Filter First LO from FGU Control Voltage from ASFIC Recovered Audio Demodulator Squelch U3220 RSSI Synthesizer 16.8 MHz Reference Clock SPI Bus Second...

  • Page 138: Receiver Back-End

    9B-6 Receiver The output of the post-RF amplifier filter is connected to the passive double balanced mixer which consists of T3301, T3302 and CR3301. Matching of the filter to the mixer is provided by C3317, C3318 and L3308. After mixing with the first LO signal from the voltage controlled oscillator (VCO) using high side injection, the RF signal is down-converted to the 45.1 MHz IF signal.

  • Page 139: Automatic Gain Control Circuit

    Receiver 9B-7 Automatic Gain Control Circuit (Refer to VHF Receiver Front End Schematic Diagram on page 9B-16 and VHF Receiver Back End Schematic Diagram on page 9B-17) The front end automatic gain control circuit provides automatic reduction of gain, of the front end RF amplifier via feedback.

  • Page 140: Frequency Generation Circuitry

    9B-8 Frequency Generation Circuitry Frequency Generation Circuitry Voltage Multiplier Rx Out Mixer Aux3 VCOBIC Rx VCO Circuit Vmult1 U3801 Synthesizer Vmult2 U3701 Loop Filter Tx Out PA Driver 16.8 MHz Ref. Osc. Tx VCO Circuit MOD Out Modulating Signal Figure 9-3 Frequency Generation Unit Block Diagram The Frequency Generation Circuitry is composed of two main ICs, the Fractional-N synthesizer (U3701), and the VCO/Buffer IC (U3801).

  • Page 141: Synthesizer

    Frequency Generation Circuitry 9B-9 Synthesizer (Refer toVHF Synthesizer Schematic Diagram on page 9B-18) The Fractional-N Synthesizer uses a 16.8MHz crystal (Y3761) to provide a reference for the system. The LVFractN IC (U3701) further divides this to 2.1MHz, 2.225MHz, and 2.4MHz as reference frequencies.

  • Page 142: Vco - Voltage Controlled Oscillator

    9B-10 Frequency Generation Circuitry VCO - Voltage Controlled Oscillator (Refer toVHF Voltage Controlled Oscillator Schematic Diagram on page 9B-19) AUX3 (U3701 Pin2) U3701 Pin 32 Prescaler Out TRB_IN Pin 20 Pin 19 Pin 12 Pin7 Rx-SW TX/RX/BS Pin13 Tx-SW Switching Network LO RF INJECTION Presc Vcc-Superfilter...
  • Page 143 Frequency Generation Circuitry 9B-11 The RF section of the VCOBIC(U3801) is operated at 4.54 V (VSF), while the control section of the VCOBIC and Fractional-N synthesizer (U3701) is operated at 3.3V. The operation logic is shown in Table 9-1. Table 9-1 VCO Control Logic Desired AUX 4 AUX 3...

  • Page 144: Notes For All Schematics And Circuit Boards

    1. Unless otherwise stated, resistances are in Ohms (k = 1000), and capacitances are in picofarads (pF) or microfarads (µF). 2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multime- ter or equivalent. Transmitter measurements should be made with a 1.2 µH choke in series with the voltage probe to prevent circuit loading.

  • Page 145: Circuit Board/Schematic Diagrams And Parts List

    Circuit Board/Schematic Diagrams and Parts List Circuit Board/Schematic Diagrams and Parts List C517 C531 C529 R410 PB504 PB502 PB501 R437 C3205 R3200 R3217 C3212 C3213 VR440 R3209 Y3761 C3270 R3202 Y3200 C3279 C3210 R3275 VR501 R3226 C3278 C3277 C527 R3225 R3212 U405 TP3702...

  • Page 146: Vhf (136-174Mhz) Main Board Bottom Side Pcb No. 8480675Z01

    Circuit Board/Schematic Diagrams and Parts List VR441 VR506 SH402 C489 C3240 C3219 C3223 C3241 R3219 C3227 D3761 C3763 R3224 R3222 C3236 S502 C3243 Y3762 C3237 R3223 R3760 R463 C3244 R3761 U3220 CR501 CR414 C3230 C3235 C3751 C3221 R415 R3763 B501 R414 U409 C3735...

  • Page 147: Vhf Controls And Switches Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List PB501 SWITCH UNSWB+ VR451 VR450 J407 F501 C521 10.0V VR440 10.0V B501 .01uF 6.8V SWITCH S502 MECH_SWB+ C500 PB504 C503 TAB2 RSSI_FIL C502 CR501 1000pF SWITCH 100pF L505 0.47uF 390nH TAB1 BATT_CODE VR439 VR444 6.8V VR506 6.8V...

  • Page 148: Vhf Receiver Front End Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List R5_2_FE R5_3_FE C3320 C3337 C3309 R3316 82pF .022uF 0.1uF L3309 150nH R3322 UNSWB_PLUS_1_RX UNSWB_PLUS_2_RX R3321 R3323 UNSWB+ C3308 IF_1_FE L3304 330pF 470nH C3336 10uF C3307 C3315 R3315 100pF 10pF T3301 C3317 R3310 39pF C3313 C3316 150pF 3.3pF...

  • Page 149: Vhf Receiver Back End Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List Vdd_FILTERED Vdd_FILTERED C3208 R5_3_ZIF R3209 0.1uF R3220 R3200 R3206 4.7K Q3201 RSSI C3220 100K C3204 R3201 C3205 10pF .01uF 2.2K 0.1uF L3221 R3207 R3208 R3212 4.7K 2.9V C3228 R3221 Y3200 .01uF C3229 C3210 1000pF C3225 XTAL R3202...

  • Page 150: Vhf Synthesizer Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List U3711 ADP3300 SWB_PLUS_1_FN 5V_1_FN 5V (SOURCE) SWB+ C3711 10uF C3712 C3713 0.1uF C3701 L3701 2.2uF 390nH .01uF R3701 C3702 .01uF D3701 C3710 C3703 2.2uF .01uF C3704 .01uF BIAS_ADJ BIAS_ADJ_1_FN R3702 R3705 D3702 C3705 0.1uF C3714 4.7uF C3725...

  • Page 151: Vhf Voltage Controlled Oscillator Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List Vdda VSF_1_VCO Vdda_3_VCO 3.3V 4.55V R5_1_VCO L3813 R:4V R3817 T: 2.8V R3802 R3811 R:4.6V R, T: 3.5V-9.5V T: 0V @ 135MHz-174MHz C3822 C3813 R: 1V RMS R3818 1000pF R: 250mV RMS D3821 C3810 L3811 L3812 C3811 C3812...

  • Page 152: Vhf Transmitter Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List RESET UNSWB+ UNSWB+ UNSWB+ UNSWB+ DATA RESET_1_PA 5V_2_PA BIAS_TUNING CLK_2_PA C3570 330pF R3570 DATA_2_PA R3569 Q3561 CSX_2_PA C3560 UNSWB_LPLUS_2_PA UNSW_LPLUS_3_PA GND2 BPOS NC_U3502_13 R3561 DATA U3502 NC_U3502_12 H99S-4 NC_U3502_11 TEMP NC_U3502_10 C3566 RSET LM50C 100pF NC_U3502_9 F168...

  • Page 153: Vhf Radio Parts List

    Circuit Board/Schematic Diagrams and Parts List VHF Radio Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola C3280 2113743L39 8200pF C3524 2113740F34 22pF C3727 2113743N50 100pF Description Part No. C3301...
  • Page 154 Circuit Board/Schematic Diagrams and Parts List Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C408 2113743N50 100pF C484 2113743L17 1000pF D3832 4862824C01 Varactor L3823 2462587N49 47nH C409 2113743M24 0.1uF, +80%/-20%...
  • Page 155 R405 0662057M01 S501 4080502B03 Channel Switch 8480675Z01 VHF main PC Board R3547 0662057N01 R406 0662057N20 S502 1880619Z01 Volume Switch * Motorola Depot Servicing only R3548 0662057M95 7.5K R410 0662057N23 100K SH3201 2602023X08 Shield R3551 0662057M40 R411 0662057M98 SH3202 2686081B02 Shield...

  • Page 156: Circuit Board/Schematic Diagrams And Parts List

    Circuit Board/Schematic Diagrams and Parts List Circuit Board/Schematic Diagrams and Parts List VR444 C531 C517 C529 C516 C521 R410 C423 PB501 PB502 PB504 C505 R437 C3205 R3200 R418 R3217 C3212 C3213 VR451 VR440 R3207 C502 C530 U3201 R3209 C455 VR450 VR431 Q3201 C446...

  • Page 157: Vhf (136-174Mhz) Main Board Bottom Side Pcb No. 8480675Z03

    Circuit Board/Schematic Diagrams and Parts List VR441 VR506 SH402 C522 C489 C488 C3219 C3241 C3223 C486 R3219 C3227 D3761 C3240 C3763 C3242 R3222 VR439 L505 R3224 C3236 S502 CR414 C3243 B501 C3237 R3223 C3224 C3222 Y3762 C3211 R3760 R463 C3244 R3761 U3220 CR501...

  • Page 158: Vhf Controls And Switches Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List PB501 SWITCH C516 VR451 C517 UNSWB+ VR450 1000pF 1000pF 10.0V 10.0V F501 C521 VR440 B501 .01uF 6.8V SWITCH S502 MECH_SWB+ J407 INT_SPN PB504 C503 C500 TAB2 RSSI_FIL C509 C501 C502 SWITCH C508 C477 C478 CR501 100pF 1000pF...

  • Page 159: Vhf Receiver Front End Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List R5_2_FE R5_3_FE C3320 91pF C3337 C3309 R3316 .022uF 0.1uF L3309 150nH R3322 R3321 UNSWB_PLUS_1_RX UNSWB_PLUS_2_RX R3323 IF_1_FE UNSWB+ L3304 C3308 330pF 470nH C3336 10uF C3307 R3315 100pF C3315 T3301 10pF R3310 C3317 39pF C3311 C3318 C3312 C3313...

  • Page 160: Vhf Receiver Back End Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List Vdd_FILTERED Vdd_FILTERED R5_3_ZIF C3208 R3209 R3220 0.1uF R3200 4.7K R3206 C3220 100K Q3201 10pF RSSI C3204 R3201 C3205 .01uF 0.1uF 2.2K L3221 R3212 R3207 R3208 4.7K C3228 C3210 R3221 .01uF C3239 C3229 1000pF .022uF 100pF C3225 Y3200...

  • Page 161: Vhf Synthesizer Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List U3711 7.5V ADP3300 5V_1_FN SWB_PLUS_1_FN 5V (SOURCE) SWB+ C3711 10uF C3712 C3713 0.1uF C3701 L3701 2.2uF 390nH .01uF R3701 C3702 .01uF D3701 C3710 C3703 2.2uF .01uF C3704 .01uF BIAS_ADJ 13.2V BIAS_ADJ_1_FN R3702 R3705 D3702 C3705 0.1uF C3714...

  • Page 162: Vhf Voltage Controlled Oscillator Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List Vdda VSF_1_VCO Vdda_3_VCO 3.3V 4.55V R5_1_VCO L3813 R:4V R3817 T: 2.8V R3811 R3802 R:4.6V R, T: 3.5V-9.5V C3822 T: 0V @ 135MHz-174MHz 1000pF C3813 R: 1V RMS R: 250mV RMS R3818 D3821 .01uF R3828 C3810 L3811 L3812...

  • Page 163: Vhf Transmitter Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List UNSWB+ UNSWB+ UNSWB+ UNSWB+ DATA RESET RESET_1_PA 5V_2_PA BIAS_TUNING CLK_2_PA C3570 330pF R3570 DATA_2_PA R3569 Q3561 CSX_2_PA UNSWB_LPLUS_2_PA C3560 UNSW_LPLUS_3_PA GND2 BPOS R3561 DATA U3502 H99S-4 TEMP C3566 RSET LM50C 100pF F168 5185963A15 R3571 C3561 ANT_BIAS R3562...

  • Page 164: Vhf Radio Parts List

    Circuit Board/Schematic Diagrams and Parts List VHF Radio Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola C3275 2113743N44 56pF C3509 2113743L05 330pF C3709 2113743M24 100000pF, +80%/-20% Description Part No.
  • Page 165 Circuit Board/Schematic Diagrams and Parts List Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C3824 2113743N44 56pF C452 2113743G26 4.7uF, +80%/-20% C520 2113743L17 1000pF L3271 2462587Q20 2.2uH C3825...
  • Page 166 Circuit Board/Schematic Diagrams and Parts List Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. PB504 4080523Z01 Tactile Push Button R3270 0662057M74 1000 R3565 Not Placed R400 0662057N15 Q3200...
  • Page 167 Barcode Label SH3201 2602023X08 Rx Back end top shield 8480675Z03 VHF main PC board SH3202 2686081B02 LVZIF Shield * Motorola Depot Servicing only SH3203 2686081B03 45.1MHz Xtal Shield SH3301 2686081B01 Rx Back end bottom shield SH3302 2686081B05 Mixer Shield SH3303 2686081B06...

  • Page 168: Circuit Board/Schematic Diagrams And Parts List

    Circuit Board/Schematic Diagrams and Parts List Circuit Board/Schematic Diagrams and Parts List C517 VR444 C531 C529 PB504 PB502 PB501 R410 R437 C3205 R3200 R3217 C3212 C3213 VR451 VR440 R3209 VR450 VR431 C3270 R3202 Y3761 Y3200 C3279 R3226 VR501 R3225 C3210 C3278 C527 Q506...

  • Page 169: Vhf (136-174Mhz) Main Board Bottom Side Pcb No. 8480675Z04

    Circuit Board/Schematic Diagrams and Parts List VR441 C489 C3223 C3219 C3227 R3219 C3240 R3222 R3224 S502 C3243 C3236 B501 Y3762 C3244 C3237 R3223 U3220 CR501 C3230 C3235 R415 C3221 R3763 C3751 R414 C3735 C494 U409 C433 SH3702 C431 R3703 C3703 Q418 C3239 C3229...

  • Page 170: Vhf Controls And Switches Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List PB501 SWITCH C516 C517 1 A1 1000pF 1000pF 3 A2 UNSWB+ VR440 F501 S502 VR450 VR451 6.8V C521 B501 mgc_comps 10.0V 10.0V .01uF MECH_SWB+ PB504 J407 INT_SPN C500 C508 C509 C503 SWITCH RSSI_FIL C502 TAB2 1000pF 100pF...

  • Page 171: Vhf Receiver Front End Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List R5_2_FE R5_3_FE C3320 91pF C3337 C3309 R3316 .022uF 0.1uF L3309 150nH R3322 R3321 UNSWB_PLUS_1_RX UNSWB_PLUS_2_RX R3323 IF_1_FE UNSWB+ L3304 C3308 330pF 470nH C3336 10uF C3307 R3315 100pF C3315 T3301 10pF R3310 C3317 39pF C3311 C3318 C3312 C3313...

  • Page 172: Vhf Receiver Back End Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List Vdd_FILTERED Vdd_FILTERED R5_3_ZIF C3208 R3209 R3220 0.1uF R3200 4.7K R3206 C3220 100K Q3201 10pF RSSI C3204 R3201 C3205 .01uF 0.1uF 2.2K L3221 R3212 R3207 R3208 4.7K C3228 C3210 R3221 .01uF C3239 C3229 1000pF .022uF 100pF C3225 Y3200...

  • Page 173: Vhf Synthesizer Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List U3711 7.5V ADP3300 5V_1_FN SWB_PLUS_1_FN 5V (SOURCE) SWB+ C3711 10uF C3712 C3713 0.1uF C3701 L3701 2.2uF 390nH .01uF R3701 C3702 .01uF D3701 C3710 C3703 2.2uF .01uF C3704 .01uF BIAS_ADJ 13.2V BIAS_ADJ_1_FN R3702 R3705 D3702 C3705 0.1uF C3714...

  • Page 174: Vhf Voltage Controlled Oscillator Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List Vdda VSF_1_VCO Vdda_3_VCO 3.3V 4.55V R5_1_VCO L3813 R:4V R3817 T: 2.8V R3811 R3802 R:4.6V R, T: 3.5V-9.5V C3822 T: 0V @ 135MHz-174MHz 1000pF C3813 R: 1V RMS R: 250mV RMS R3818 D3821 .01uF R3828 C3810 L3811 L3812...

  • Page 175: Vhf Transmitter Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List UNSWB+ UNSWB+ UNSWB+ UNSWB+ DATA RESET RESET_1_PA 5V_2_PA BIAS_TUNING CLK_2_PA C3570 330pF R3570 DATA_2_PA R3569 Q3561 CSX_2_PA UNSWB_LPLUS_2_PA C3560 UNSW_LPLUS_3_PA GND2 BPOS R3561 DATA U3502 H99S-4 TEMP C3566 RSET LM50C 100pF F168 5185963A15 R3571 C3561 ANT_BIAS R3562...

  • Page 176: Vhf Radio Parts List

    Circuit Board/Schematic Diagrams and Parts List VHF Radio Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola C3275 2113743N44 56pF C3509 2113743L05 330pF C3709 2113743M24 100000pF, +80%/-20% Description Part No.
  • Page 177 Circuit Board/Schematic Diagrams and Parts List Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C3824 2113743N44 56pF C452 2113743G26 4.7uF, +80%/-20% C520 2113743L17 1000pF L3301 2462587T35 12nH C3825...
  • Page 178 Circuit Board/Schematic Diagrams and Parts List Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. Q3200 4813827A07 NPN Transistor R3271 0662057M42 R3569 Not Placed R401 0662057M01 Q3201 4880214G02 NPN Transistor...
  • Page 179 Barcode Label SH3201 2602023X08 Rx Back end top shield 8480675Z04 VHF main PC Board SH3202 2686081B02 LVZIF Shield * Motorola Depot Servicing only SH3203 2686081B03 45.1MHz Xtal Shield SH3301 2686081B01 Rx Back end bottom shield SH3302 2686081B05 Mixer Shield SH3303 2686081B06...
  • Page 180 Circuit Board/Schematic Diagrams and Parts List THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 181: Troubleshooting Charts

    Troubleshooting Charts 9B-49 10.0 Troubleshooting Charts MCU Check Press PTT. Red LED does not Before replacing light up Power Up Not able to pro- MCU, check SPI Alert Tone Audio gram RF Board AUDIO clock, SPI data, at AudioPA J402 Audio and RF IC select (U420) input at Pin 3 &...

  • Page 182: Troubleshooting Flow Chart For Receiver (Sheet 1 Of 2)

    9B-50 Troubleshooting Charts START Bad SINAD Bad 20dB Quieting No Recovered Audio Audio at pin Check Controller 27 of U3220? Spray of inject 1st IF into XTAL Filter IF Freq: 45.1MHz Check Q3270 bias circuitry for faults. Audio heard? Rotate Freq. Knob Check 2nd LO Control Voltage at C3279 Activity...

  • Page 183: Troubleshooting Flow Chart For Receiver (Sheet 2 Of 2)

    Troubleshooting Charts 9B-51 Inject RF into J3501 Trace IF signal Q3200 collec- from C3200 to IF Signal at tor OK? Q3200. Check for C3200? IF signal bad XTAL filter. present? Before replacing U3220, check U3220 volt- 1st LO O/P ages; trace IF RF Signal at Check FGU signal path.

  • Page 184: Troubleshooting Flow Chart For Transmitter

    9B-52 Troubleshooting Charts START No Power Is There B+ Bias for Check Ant switch Q3561 D3521 Control Voltage High or Is Current Check PCIC Low at TP3502 High Check Drive to Module 1. Check Pin Diodes 2. Check Harmonic Filter Is Drive Troubleshoot Inspect/Repair Tx.

  • Page 185: Troubleshooting Flow Chart For Synthesizer

    Troubleshooting Charts 9B-53 Check U3201, 3.3V at U3701 Start L3731 pins 5, 20, 34 & Visual Check D3701, D3702, Correct check of the U3701, C3701 - Problem Board OK? C3707 Is 16.8MHz 16.8MHz Replace at pin 6 of Is U3701 Pin 47 Signal at signal at U3701...

  • Page 186: Troubleshooting Flow Chart For Vco

    9B-54 Troubleshooting Charts START Change U3801 L3831, Change L3832, No LO? L3831, L3832 L3833 O/C? U3801 TRB = 3.2V? Tx Carrier? Pin 10 >1V? VCO OK Check R3811, L3811 for dry joint AUX 3 at or faulty Check U3701 R3829 High? Change Check U3701...

  • Page 187: Keypad-Controller Interconnect Flex

    10-1 Section 10 FLEX LAYOUT/SCHEMATIC DIAGRAMS AND PARTS LISTS Keypad-Controller Interconnect Flex <- TO KP Front Metal View From Top Side 8480475Z02 REV A TO CTRL -> J601 J400 ZMY0130344-O Schematic for Keypad-Controller Interconnect Flex CONTROLLER KEYPAD J601 J400 FLAT_RX_SND FLAT_RX_SND RX_AUD_RTN RX_AUD_RTN...

  • Page 188: Schematic For Speaker/Mic Assembly - 0104008J99

    Schematic For Speaker/Mic Assembly - 0104008J99 J402 M401 4 PIN CONN C800 INT_MIC 100pF INT_SPN M400 SPKR_20 SPKR_20 ZMY0130346-O Parts List for Speaker/Mic Assembly - 0104008J99 Reference Motorola Description Symbol Part No. C800 2113740A55 Cap, 100pF M400 5085738Z02 Speaker M401 5013920A04 Mic, Mini electrec 8485687Z01...
  • Page 189 Micro Controller Unit MRTI Motorola Radio-Telephone Interconnect: a system that provides a repeater connection to the Public Switched Telephone Network (PSTN). The MRTI al- lows the radio to access the telephone network when the proper access code is received.
  • Page 190 Term Definition Private-Line® tone squelch: a continuous sub-audible tone that is transmitted along with the carrier. Phase-Locked Loop: a circuit in which an oscillator is kept in phase with a ref- erence, usually after passing through a frequency divider. Push-To-Talk: the switch located on the left side of the radio which, when pressed, causes the radio to transmit.
  • Page 191 Service Manuals need to be updated accordingly. If you wish to be informed of these updates, kindly fill in and fax us your details. Fax to: 6-04-6124944 The Technical Publications Coordinator, Media and Communications, R&D Department, Motorola Penang. Your Details Name/Contact Person: Company Name: Address: Telephone No.: Fax No.:...
  • Page 192 Kindly take a few moments to provide feedback on this manual. Thank you for your cooperation. Fax to: 6-04-6124944 The Technical Publications Coordinator, Media and Communications, R&D Department, Motorola Penang. 1. Please check all the appropriate boxes: Disassembly Pro- cedures Alignment...

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