Motorola APX 5000 Service Manual page 161

Troubleshooting Charts: PA Failure
5.23 PA Failure – Main
No or Low Power
Measure Power at
several VHF, 7/800, UHF1,
or UHF2 test frequencies
depending on radio
VHF PA
7/800 PA
2 1
If PA proves to be
fine contiue onward
Is RX sensitivity
No, check the coaxial
antenna cable for
continuity and proper
engagement
Is coax cable
Replace
coaxial cable.
UHF1 PA
7
Yes
4
OK?
No
Yes (not valid for VHF)
OK?
No
UHF2 PA
9
3
5-55