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Motorola 6864115B62-C manual available for free PDF download: Detailed Service Manual
Motorola 6864115B62-C Detailed Service Manual (452 pages)
GM Series Professional Radio
Brand:
Motorola
| Category:
Radio
| Size: 18.72 MB
Table of Contents
Table of Contents
7
Chapter 1 INTRODUCTION
9
Scope of Manual
9
Warranty and Service Support
9
Warranty Period and Return Instructions
9
After Warranty Period
9
European Radio Support Centre (ERSC)
10
Parts Identification and Ordering
10
EMEA Test Equipment Support
10
Technical Support
11
Related Documents
11
Radio Model Information
12
Chapter 2 MAINTENANCE
13
Introduction
13
Preventive Maintenance
13
Inspection
13
Cleaning
13
Safe Handling of CMOS and LDMOS
14
General Repair Procedures and Techniques
14
Notes for All Schematics and Circuit Boards
17
Chapter 3 SERVICE AIDS
23
Recommended Test Tools
23
Test Equipment
24
Theory of Operation
27
GM140/GM340/GM640 Models
29
GM160/GM360/GM660 Models
29
GM380/GM1280 Models
30
Chapter 2 THEORY of OPERATION
31
Controlhead Model for GM140, GM340 and GM640
31
Introduction
31
Microprocessor Circuit
31
Power on / off
31
Power Supplies
31
Keypad Keys
32
SBEP Serial Interface
32
Microphone Connector Signals
33
Status LED and Back Light Circuit
33
Controlhead Model for GM160, GM360 and GM660
34
Electrostatic Transient Protection
34
Power on / off
34
Power Supplies
34
Speaker
34
Microprocessor Circuit
35
SBEP Serial Interface
35
Keypad Keys
36
Liquid Crystal Display (LCD)
36
Status LED and Back Light Circuit
36
Microphone Connector Signals
37
Controlhead Model for GM380 and GM1280
38
Electrostatic Transient Protection
38
Power Supplies
38
Speaker
38
Voltage Regulator Circuit
38
Microprocessor Circuit
39
Power on / off
39
SBEP Serial Interface
39
Keypad Keys
40
Status LED and Back Light Circuit
40
Liquid Crystal Display (LCD)
41
Microphone Connector Signals
41
Electrostatic Transient Protection
42
Speaker
42
Chapter 3 TROUBLESHOOTING CHARTS
43
On/Off
43
Microprocessor
44
On/Off
45
Microprocessor
46
Display
47
Backlight
48
On/Off
49
Microprocessor
50
Display
52
Keypad Backlight
53
Display Backlight
54
Allocation of Schematics and Circuit Boards
55
Controlhead GM140/340/640 - PCB 8486146B07/8471236Z01 / Schematics
57
Controlhead PCB 8486146B07 Parts List
60
Controlhead PCB 8471236Z01 - Parts List
61
Controlhead GM160/360/660 - PCB 8486155B06/8415672H03 / Schematics
62
Controlhead PCB 8486155B06 Parts List
67
Controlhead PCB 8415672H03 Parts List
68
Controlhead PCB 8486178B03/04 - Parts List
74
Controlhead PCB 8471237L01 Parts List
75
Table of Contents
79
Controller Circuits
81
General
81
Overview
81
Theory of Operation
81
Radio Power Distribution
82
Electronic ON/OFF
83
Emergency
84
Mechanical ON/OFF
84
Ignition
85
Microprocessor Clock Synthesizer
85
Serial Peripheral Interface (SPI)
85
General Purpose Input/Output
86
SBEP Serial Interface
86
Normal Microprocessor Operation
87
FLASH Electronically Erasable Programmable Memory
88
Controller Board Audio and Signalling Circuits
89
Electrically Erasable Programmable Memory (EEPROM)
89
General - Audio Signalling Filter IC with Compander
89
Static Random Access Memory (SRAM)
89
Transmit Audio Circuits
90
Transmit Signalling Circuits
92
Receive Audio Circuits
94
Receive Signalling Circuits
97
Voice Storage
98
Troubleshooting Charts
99
Controller T6/T7
102
Section 4
157
Chapter 1 MODEL CHART and TECHNICAL SPECIFICATIONS
159
GM140/GM160 Model Chart
159
GM340/GM360/GM380 Model Chart
160
GM640/GM660/GM1280 Model Chart
161
Technical Specifications
162
Chapter 2 THEORY of OPERATION
165
Introduction
165
Receiver Front-End
165
VHF (136-174Mhz) Receiver
165
First Mixer and High Intermediate Frequency (IF)
166
Front-End Band-Pass Filters & Pre-Amplifier
166
Low Intermediate Frequency (IF) and Receiver Back End
167
VHF (136-174Mhz) Transmitter Power Amplifier (PA) 25 W
167
Final Stage
168
First Power Controlled Stage
168
Power Controlled Driver Stage
168
Antenna Switch
169
Directional Coupler
169
Harmonic Filter
169
Power Control
169
Fractional-N Synthesizer
170
Reference Oscillator
170
VHF (136-174Mhz) Frequency Synthesis
170
Voltage Controlled Oscillator (VCO)
171
Synthesizer Operation
172
Power Controlled Stage
173
VHF (136-174Mhz) Transmitter Power Amplifier (PA) 45 W
173
Directional Coupler
174
Driver Stage
174
Final Stage
174
Pre-Driver Stage
174
Antenna Switch
175
Harmonic Filter
175
Power Control
175
Chapter 3 TROUBLESHOOTING CHARTS
177
Troubleshooting Flow Chart for Receiver (Sheet 1 of 2)
177
Troubleshooting Flow Chart for Receiver (Sheet 2 of 2)
178
Troubleshooting Flow Chart for 25W Transmitter (Sheet 1 of 3)
179
Troubleshooting Flow Chart for 25W Transmitter (Sheet 2 of 3)
180
Troubleshooting Flow Chart for 25W Transmitter (Sheet 3 of 3)
181
Troubleshooting Flow Chart for 45W Transmitter (Sheet 1 of 2)
182
Troubleshooting Flow Chart for 45W Transmitter (Sheet 2 of 2)
182
Troubleshooting Flow Chart for Synthesizer
184
Troubleshooting Flow Chart for VCO
185
Allocation of Schematics and Circuit Boards
187
Controller Circuits
187
VHF 1-25W PCB 8486172B04 / Schematics
191
VHF 1-25W PCB 8486172B06 / Schematics
201
VHF 1-25W PCB 8486172B07 / Schematics
211
VHF 1-25W PCB 8486172B08 / Schematics
218
VHF 25-45W PCB 8486140B12 / Schematics
228
VHF 25-45W PCB 8486140B12 Parts List
231
VHF 25-45W PCB 8486140B13 / Schematics
234
VHF 25-45W PCB 8486140B15 / Schematics
239
VHF 1-25W PCB 8471235L02 / Schematics
249
Section 5
259
Chapter 1 MODEL CHART and TECHNICAL SPECIFICATIONS
261
GM140/GM160 Model Chart
261
GM340/GM360/GM380 Model Chart
262
GM640/GM660/GM1280 Model Chart
263
Technical Specifications
264
Chapter 2 THEORY of OPERATION
267
Introduction
267
Receiver Front-End
267
UHF (403-470Mhz) Receiver
267
First Mixer and High Intermediate Frequency (IF)
268
Front-End Band-Pass Filters & Pre-Amplifier
268
Low Intermediate Frequency (IF) and Receiver Back End
268
UHF (403-470Mhz) Transmitter Power Amplifier (PA) 25 W
269
Final Stage
270
First Power Controlled Stage
270
Power Controlled Driver Stage
270
Antenna Switch
271
Directional Coupler
271
Harmonic Filter
271
Power Control
271
Fractional-N Synthesizer
272
Reference Oscillator
272
UHF (403-470Mhz) Frequency Synthesis
272
Voltage Controlled Oscillator (VCO)
273
Synthesizer Operation
274
Driver Stage
276
Power Controlled Stage
276
Pre-Driver Stage
276
Antenna Switch
277
Directional Coupler
277
Final Stage
277
Harmonic Filter
277
Power Control
277
Chapter 3 TROUBLESHOOTING CHARTS
279
Troubleshooting Flow Chart for Receiver (Sheet 1 of 2)
279
Troubleshooting Flow Chart for Receiver (Sheet 2 of 2)
280
Troubleshooting Flow Chart for 25W Transmitter (Sheet 1 of 3)
281
Troubleshooting Flow Chart for 25W Transmitter (Sheet 2 of 3)
282
Troubleshooting Flow Chart for 25W Transmitter (Sheet 3 of 3)
283
Troubleshooting Flow Chart for Synthesizer
285
Troubleshooting Flow Chart for VCO
286
Allocation of Schematics and Circuit Boards
287
Controller Circuits
287
UHF 25-40W PCB 8480643Z06 / Schematics
299
UHF 1-25W PCB 8471224L01 / Schematics
328
Uhf 1-25W Pcb 8471224L03
334
Section 6
351
Chapter 1 MODEL CHART and TECHNICAL SPECIFICATIONS
353
GM360 Model Chart
353
Technical Specifications
353
Chapter 2 THEORY of OPERATION
355
Introduction
355
Low Band Receiver
356
Receiver Front-End
356
First Mixer and High Intermediate Frequency (IF)
357
Front-End Band-Pass Filters & Pre-Amplifier
357
High Intermediate Frequency (IF) and Blanker Switches
357
Controller Circuits
358
Extender" (Noise Blanker)
358
Low Intermediate Frequency (IF) and Receiver Back End
358
Driver Stage
359
Low Band Transmitter Power Amplifier (PA) 25-60 W
359
Power Controlled Stage
359
Antenna Switch
360
Final Stage
360
Harmonic Filter
360
Power Control
361
TX Safety Switch
361
Fractional-N Synthesizer
362
Low Band Frequency Synthesis
362
Synthesizer Operation
363
Voltage Controlled Oscillator (VCO)
363
Troubleshooting Flow Chart for Transmitter
367
Troubleshooting Flow Chart for Receiver (Sheet 1 of 2)
368
Troubleshooting Flow Chart for Receiver (Sheet 2 of 2)
369
Troubleshooting Flow Chart for Synthesizer
370
Troubleshooting Flow Chart for VCO
371
LB1 25-60W PCB 8486206B06 Parts List
387
LB2 25-60W PCB 8486207B05 Parts List
400
LB3 25-60W PCB 8485908Z03 Parts List
413
LB1 25-60W PCB 8486206B08 Parts List
420
LB2 25-60W PCB 8486207B07 Parts List
425
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