Vocon Transmit Audio Troubleshooting Chart (1 Of 2) - Motorola XTS 2500 Service Manual

UHF2 Troubleshooting Charts: VOCON Transmit Audio Troubleshooting Chart (1 of 2)

6.3.20VOCON Transmit Audio Troubleshooting Chart (1 of 2)

Radio has no
Transmitter
Deviation (VOCON
Evaluation)
Inspect internal
and external
microphone
contacts
Connections
OK?
Yes
Connect an RLN4460
test box (or equivalent)
to the radio side
connector via a
programming cable
Inject a 225mVrms
1kHz tone into the
test box Audio in
port
Is FM
deviation
approx
3kHz?
No
6816985H01-F
Repair
No
connections or
replace flex
connector
Y es
No VOCON
problem found
Check voltage
on C754 and
C755
No
Voltage >
7.0mVrms?
Y es
Y
es
1
Voltage > 7.0mV?
MAEPF-27347-O
6.3-19
Replace
C754 and/or
C755
No
Replace
L651
and /or L652
February 14, 2012