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GP2000
Motorola GP2000 Service Manual
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Section 7 -28
Troubleshooting charts
Star
t
No
P
o
wer
Is
+5vTX and
TXB+
OK?
Is
current
OK?
Is
TP308
High or Low?
Check Pin3
to Q419
Is
Pin
OK?
Check
Q201, Q202
&
U151
Check
V
oltages in
P
o
wer Control
Circuit
Check
V
oltages in
P
A Line-up
T
roubleshoot
VCO
Done
Is
P
o
wer
OK?
1.
Check Pin Diodes
2.
Check Har
monic Filter
Inspect/Repair
TX Output
Network
NO
NO
LO
W
HIGH
YES
NO
NO
YES
YES
YES
T
roubleshooting Flow
Chart for T
ransmitter
89
91
Table of Contents
Computer Software Copyrights
2
Safety Information
3
Antenna Care
4
Electromagnetic Interference/Compatibility
4
Approved Accessories
4
Safety and General
5
Operational Warnings
5
Potentially Explosive Atmospheres
5
Blasting Caps and Areas
5
Operational Cautions
5
Table of Contents
7
Scope of Manual
11
Warranty and Service Support
11
Warranty Period and Return Instructions
11
After Warranty Period
11
Piece Parts
12
Technical Support
12
Radio Model Information
13
Maintenance
15
Introduction
15
Preventive Maintenance
15
Inspection
15
Cleaning Procedures
15
Safe Handling of CMOS and LDMOS Devices
16
Repair Procedures and Techniques Ñ General
17
Disassembling and Reassembling the Radio Ñ General
18
Radio Disassembly Ñ Detailed
19
Front Cover from Chassis Disassembly
19
Control Board Disassembly
21
RF Board Disassembly
21
Radio Reassembly Ñ Detailed
22
RF Board Reassembly
22
Control Board Reassembly
22
Chassis and Front Cover Reassembly
22
Mechanical View and Parts List
25
Exploded View and Parts List
25
Service Aids
28
Test Equipment
29
Programming Cable (DSK001C706)
30
IF Test Box (DSK001C702)
31
Radio Tuning
33
Introduction
33
Radio Tuning Setup
33
Radio Programming
35
Introduction
35
CPS Programming Setup
35
Programming Your Radio
36
Overview of the Programming Process
36
Cloning Radio Parameters to User Radios
36
Parameters Which Are Cloned
36
Parameters Which Are Not Cloned
36
To Clone a Radio
36
Error Conditions
37
Dealer and User Configurations
37
Programming Mode
38
Introduction
38
Entering Programming Mode
38
Exiting Programming Mode
38
Accessing Programming Mode Parameters
38
Editing RW (Radio Wide) Parameters
39
Editing Channel Parameters
45
Editing VFO Parameters
48
PL Frequencies and Codes
52
DPL Codes
53
Examples
54
Programming an ID
55
Programming Phone Number/Access Code/De-Access Code
56
Factory Reset
56
Error Code Displays
57
Error Codes
57
Antennas
59
Carrying Accessories
59
Carry Cases
59
Chargers
60
Batteries
60
Audio Accessories
60
Manuals
60
Service Kits
61
VHF Band Information (136-174 Mhz)
63
Model Chart
63
Specifications
65
Theory of Operation
66
General Information
66
Power Distribution
66
Power up Sequence
66
CPU / Control Section
67
VCO / Synthesizer Section
67
Transmitter Section
68
Receiver Section
69
Battery Section
70
Block Diagrams
71
Complete
71
Controller
72
Vco
72
Transmitter
73
Receiver
73
Circuit Board/Schematic Diagrams and Parts List
75
Controller Board
75
VHF 136-174 Mhz Main Board Top Side
76
VHF 136-174 Mhz Main Board Bottom Side
77
Complete Controller Board Schematic Diagram
78
VHF 136-174 Mhz RF Board Schematic Diagram
79
VHF 136-174 Mhz Radio Parts List (Controller Board)
80
Troubleshooting Charts
89
Troubleshooting Flow Chart for Receiver
89
Troubleshooting Flow Chart for Transmitter
90
Troubleshooting Flow Chart for Synthesizer
91
Troubleshooting Flow Chart for Microcontroller
92
Troubleshooting Flow Chart for VCO
93
Glossary of Terms
95
4
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Motorola GP2000 Specifications
General
Brand
Motorola
Model
GP2000
Category
Portable Radio
Language
English
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