Motorola Pro Series Elite - Troubleshooting Flow Chart for Transmitter

VHF Troubleshooting Charts 3-13
START
No Power
Is There B+ Bias for
Ant switch
Check Q3561
Is Current OK?
Is Control Voltage High
or Low
Check PCIC
1. Check Pin Diodes
2. Check Harmonic Filter
Inspect/Repair Tx. Output Net-
work
Is Power OK?
Done
Check Drive to Mod-
ule
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
Troubleshooting Flow Chart for Transmitter