Troubleshooting Table For Transmitter; Table 7-3. Transmitter Troubleshooting Table - Motorola CP185 Basic Service Manual

Troubleshooting Tables: Troubleshooting Table for Transmitter
7.3

Troubleshooting Table for Transmitter

Table 7-3. lists the possible causes of, and corrections for, transmitter problems.
Symptom
No RF Power Out
No Modulation; Distortion
Modulation
Bad Microphone Sensitivity
No/Low Signaling (PL, DPL,
MDC)
Cannot Set Deviation
Balance

Table 7-3. Transmitter Troubleshooting Table

Possible Causes
1. Tx Power Level or
Frequency
2. No Injection To Power
Amplifier
3. Antenna Switch/
Connector
1. Programming
2. Transceiver Board
1. Check Deviation and
Compensation
2. Microphone
1. Programming
2. Transceiver Board
Transceiver Board
Corrective or Test
(Measurements at Room Temperature)
Check Tx power level and frequency programming (from
tuner).
Send radio to nearest Motorola Service Centre.
Check deviation and compensation settings using the
tuner.
Send radio to nearest Motorola Service Centre.
Realign if necessary.
Send radio to nearest Motorola Service Centre.
Check programming.
Send radio to nearest Motorola Service Centre.
Send radio to nearest Motorola Service Centre.
7-3