Motorola GP series Service Information

Troubleshooting Flow Chart for Transmitter 3-5
3.0 Troubleshooting Flow Chart for Transmitter
Is
Control Voltage High
or Low at TP3502
?
Is
There
B+ Bias for
Ant switch
D3521
?
START
No Power
Check Q3561
Is
Current
OK?
Check PCIC
1. Check Pin Diodes
2. Check Harmonic Filter
Inspect/Repair Tx.
Output Network
Is
Power
OK?
Done
Check Drive to
Module
Is Drive
OK
?
Troubleshoot VCO
Inspect PA Network/
Check Power Out of
U3501 at Cap C3512
Is
Power
OK?
Replace U3501
Is
Power OK
?
Replace Q3501
Done
Done
No
Yes
Yes
No
No
Yes
Low
High
No
Yes
Yes
No
Yes
No

Motorola GP series Specifications

General

Brand	Motorola
Model	GP series
Category	Radio
Language	English