Troubleshooting Table For Transmitter; Table 9-4. Transmitter Troubleshooting Table - Motorola Commercial Series Basic Service Manual

Troubleshooting Tables: Troubleshooting Table for Transmitter
9.4

Troubleshooting Table for Transmitter

Table Table 9-4
Symptom
No RF Power Out
No Modulation; Distortion
Modulation
Bad Microphone Sensitivity
No/Low Signaling (PL, DPL,
MDC)
Cannot Set Deviation
Balance
68009328001-A
lists the possible causes of, and corrections for, transmitter problems.

Table 9-4. Transmitter Troubleshooting Table

Possible Causes
1. Tx Power Level or
Frequency
2. No Injection To Power
Amplifier
Antenna Switch/Connector
1. Programming
2. Transceiver Board
1. Check Deviation and
Compensation
2. Microphone
1. Programming
2. Transceiver Board
RF Board
Corrective or Test
(Measurements at Room Temperature)
Check Tx power level and frequency programming (from
tuner).
Send radio to depot.
Check deviation and compensation settings using the
tuner.
Send radio to depot.
Realign if necessary.
Send radio to depot.
Check programming.
Send radio to depot.
Send radio to depot.
9-3
December, 2009