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Manuals
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Motorola Manuals
Two-Way Radio
GP328 Plus
Service manual
Motorola GP328 Plus Service Manual
Portable radios
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Computer Software Copyrights
Document History
Safety Information
Compliance with Rf Exposure Standards
Operating Instructions
Approved Accessories
Additional Information
Medical Devices
Use of Communication Devices While Driving
Operational Warnings
Operational Cautions
Intrinsically Safe Radio Information
Do Not Substitute Options or Accessories
Table of Contents
Section 1 Introduction
Introduction
Scope of Manual
Warranty and Service Support
Warranty Period
After Warranty Period
Piece Parts
Technical Support
Further Assistance from Motorola
Service Aids
Section 2 Service Aids
Recommended Test Tools
Power up Self-Test
Section 3 Power up Self-Test
Error Codes
Controller Information
Section 4 Controller Information
Overview
Radio Power Distribution
Controller Board
General
Digital Architecture
Keypad
Troubleshooting Chart
Controller Board Diagrams
Controller Board Top View (PCB No. 8404051G07/G08)
Controller Board Top View (PCB No. 8404051G07/G08)
Controller Board Top View (PCB No. 8404051G09)
Controller Board Bottom View (PCB No.8404051G09)
Controller Schematics
Complete Controller Schematic Diagram
Controller ASFIC/ON_OFF Schematic Diagram
Controller Micro Processor Schematic Diagram
Controller Memory Schematic Diagram
Controller Audio Power Amplifier Schematic Diagram
Controller Parts List for VHF (for 8404051G07/G08 and 8404051G09)
8404051G09)
Controller Board Diagrams
Controller Board Top View (PCB No. 8404056G01)
Controller Board Bottom View (PCB No.8404056G01)
Controller Board Top View (PCB No. 8404056G02)
Controller Board Bottom View (PCB No. 8404056G02)
Controller Schematics
Complete Controller Schematic Diagram
Controller ASFIC/ON_OFF Schematic Diagram
Controller Micro Processor Schematic Diagram
Controller Memory Schematic Diagram
Controller Audio Power Amplifier Schematic Diagram
Controller Interface Schematic Diagram (for 8404056G01)
Controller Interface Schematic Diagram (for 8404056G02)
Controller Parts List for VHF (for 8404056G01/G02)
Controller Parts List for UHF 1, UHF 2 and 330Mhz (for 8404056G01/G02)
Section 5A
Model Chart and Test Specifications (136-174 Mhz)
Model Chart
Specifications (for GP328 Plus)
Specifications (for GP338 Plus/Gp338 XLS)
Transmitter
General
Receiver
Receiver Front-End
Receiver Back-End
Automatic Gain Control Circuit
Frequency Generation Circuitry
Synthesizer
VCO - Voltage Controlled Oscillator
Notes for All Schematics and Circuit Boards
Circuit Board/Schematic Diagrams and Parts List
VHF (136-174Mhz) Main Board Top Side PCB No. 8404055G05/G06/G07
VHF (136-174Mhz) Main Board Bottom Side PCB No. 8404055G05/G06/G07
VHF (136-174Mhz) Main Board Top Side PCB No. 8404055G09
VHF (136-174Mhz) Main Board Bottom Side PCB No. 8404055G09
VHF Controls and Switches Schematic Diagram (Sheet 2 of 2 for 8404055G09 PCB)
VHF Receiver Front End Schematic Diagram
VHF Receiver Back End Schematic Diagram
VHF Synthesizer Schematic Diagram
VHF Voltage Controlled Oscillator Schematic Diagram
VHF Transmitter Schematic Diagram
VHF Radio Parts List (RF Board)
Troubleshooting Charts
Troubleshooting Flow Chart for Controller
Troubleshooting Flow Chart for Receiver (Sheet 1
Troubleshooting Flow Chart for Receiver (Sheet 2
Troubleshooting Flow Chart for Transmitter
Troubleshooting Flow Chart for Synthesizer
Troubleshooting Flow Chart for VCO
Section 5B
Model Chart and Test Specifications (403-470 Mhz)
Model Chart
Specifications (for GP328 Plus)
Specifications (for GP338 Plus/Gp338 XLS)
Transmitter
General
Receiver
Receiver Front-End
Receiver Back-End
Automatic Gain Control Circuit
Frequency Generation Circuitry
Synthesizer
VCO - Voltage Controlled Oscillator
Notes for All Schematics and Circuit Boards
Circuit Board/Schematic Diagrams and Parts List
UHF (403-470Mhz) Main Board Top Side PCB No. 8404077G05/G06/G07
UHF (403-470Mhz) Main Board Bottom Side PCB No. 8404077G05/G06/G07
UHF (403-470Mhz) Main Board Top Side PCB No. 8404077G09
UHF (403-470Mhz) Main Board Bottom Side PCB No. 8404077G09
UHF Controls and Switches Schematic Diagram (Sheet 1
UHF Controls and Switches Schematic Diagram (Sheet 2 of 2 for 8404077G09 PCB)
UHF Receiver Front End Schematic Diagram
UHF Receiver Back End Schematic Diagram
UHF Synthesizer Schematic Diagram
UHF Voltage Controlled Oscillator Schematic Diagram
UHF Transmitter Schematic Diagram
UHF Band 1 Radio Parts List (RF Board)
Troubleshooting Charts
Troubleshooting Flow Chart for Controller
Troubleshooting Flow Chart for Receiver (Sheet 1
Troubleshooting Flow Chart for Receiver (Sheet 2
Troubleshooting Flow Chart for Transmitter
Troubleshooting Flow Chart for Synthesizer
Troubleshooting Flow Chart for VCO
Section 5C
Model Chart and Test Specifications (450-527 Mhz)
Model Chart
Specifications (for GP328 Plus)
Specifications (for GP338 Plus/Gp338 XLS)
Transmitter
General
Receiver
Receiver Front-End
Receiver Back-End
Automatic Gain Control Circuit
Frequency Generation Circuitry
Synthesizer
VCO - Voltage Controlled Oscillator
Notes for All Schematics and Circuit Boards
Circuit Board/Schematic Diagrams and Parts List
UHF Band 2 (450-527Mhz) Main Board Top Side PCB No. 8404102G03/G04/G05
UHF Band 2 (450-527Mhz) Main Board Bottom Side PCB No. 8404102G03/G04/G05
UHF Band 2 (450-527Mhz) Main Board Top Side PCB No. 8404102G07
UHF Band 2 (450-527Mhz) Main Board Bottom Side PCB No. 8404102G07
UHF Band 2 Controls and Switches Schematic Diagram (Sheet 1 of 2)
UHF Band 2 Controls and Switches Schematic Diagram (Sheet 2 of 2 for 8404102G07 PCB)
UHF Band 2 Receiver Front End Schematic Diagram
UHF Band 2 Receiver Back End Schematic Diagram
UHF Band 2 Synthesizer Schematic Diagram
UHF Band 2 Voltage Controlled Oscillator Schematic Diagram
UHF Band 2 Transmitter Schematic Diagram
UHF Band 2 Radio Parts List (RF Board)
Troubleshooting Charts
Troubleshooting Flow Chart for Controller
Troubleshooting Flow Chart for Receiver (Sheet 1
Troubleshooting Flow Chart for Transmitter
Troubleshooting Flow Chart for Synthesizer
Troubleshooting Flow Chart for VCO
Section 5D
Model Chart and Test Specifications (330-400 Mhz)
Model Chart
Specifications (for GP328 Plus)
Specifications (for GP338 Plus)
Transmitter
General
Receiver
Receiver Front-End
Receiver Back-End
Automatic Gain Control Circuit
Frequency Generation Circuitry
Synthesizer
VCO - Voltage Controlled Oscillator
Notes for All Schematics and Circuit Boards
Circuit Board/Schematic Diagrams and Parts List
330-400Mhz Main Board Top Side PCB No. 8404101G02/G03/G04
330-400Mhz Main Board Bottom Side PCB No. 8404101G02/G03/G04
330-400Mhz Main Board Top Side PCB No. 8404101G06
330-400Mhz Main Board Bottom Side PCB No. 8404101G06
330-400Mhz Controls and Switches Schematic Diagram (Sheet 2 of 2 for 8404101G06 PCB)
330-400Mhz Receiver Front End Schematic Diagram
330-400Mhz Receiver Back End Schematic Diagram
330-400Mhz Synthesizer Schematic Diagram
330-400Mhz Voltage Controlled Oscillator Schematic Diagram
330-400Mhz Transmitter Schematic Diagram
330-400Mhz Radio Parts List (RF Board)
Troubleshooting Charts
Troubleshooting Flow Chart for Controller
Troubleshooting Flow Chart for Receiver (Sheet 1
Troubleshooting Flow Chart for Transmitter
Troubleshooting Flow Chart for Synthesizer
Troubleshooting Flow Chart for VCO
Flex Layout/Schematic Diagrams and Parts Lists
Section 6 Flex Layout/Schematic Diagrams and Parts Lists
RF-Controller Interconnect Flex
Rev a
Rev B
Schematic for RF-Controller Interconnect Flex
Universal Connector Flex
GP328 Plus
GP338 Plus/Gp338 XLS
Schematic for Universal Connector Flex
GP328 Plus
GP338 Plus/Gp338 XLS
Parts List for Universal Connector Flex
GP328 Plus
GP338 Plus/Gp338 XLS
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Operating Instructions
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GP328 Plus/GP338 Plus/GP338 XLS
Portable Radios
Detailed Service Manual
6804112J28-G
December, 2004
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Table of Contents
Troubleshooting
Troubleshooting Chart
30
Troubleshooting Charts
87
Troubleshooting Flow Chart for Receiver (Sheet 1
88
Troubleshooting Flow Chart for Receiver (Sheet 2
89
Troubleshooting Flow Chart for Transmitter
90
Troubleshooting Flow Chart for Synthesizer
91
Troubleshooting Flow Chart for VCO
92
Troubleshooting charts
121
Troubleshooting Flow Chart for Receiver (Sheet 1
122
Troubleshooting Flow Chart for Receiver (Sheet 2
123
Troubleshooting Flow Chart for Transmitter
124
Troubleshooting Flow Chart for Synthesizer
125
Troubleshooting Flow Chart for VCO
126
Troubleshooting charts
157
Troubleshooting Flow Chart for Receiver (Sheet 1
158
Troubleshooting Flow Chart for Transmitter
160
Troubleshooting Flow Chart for Synthesizer
161
Troubleshooting Flow Chart for VCO
162
Troubleshooting charts
193
Troubleshooting Flow Chart for Receiver (Sheet 1
194
Troubleshooting Flow Chart for Transmitter
196
Troubleshooting Flow Chart for Synthesizer
197
Troubleshooting Flow Chart for VCO
198
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This manual is also suitable for:
Gp338 plus
Gp338 xls
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