Table 19. Receiver Troubleshooting Chart; Table 20. Transmitter Troubleshooting Chart - Motorola ASTRO XTS 5000 I Basic Service Manual

Symptom
Radio Dead; Display Does Not
Turn On
Radio Dead; Display
Turns Off
No Receive Audio or Receiver
Does Not Unmute
Audio Distorted or Not Loud
Enough
RF Sensitivity Poor
Radio Will Not Turn Off
Symptom
No RF Power Out
No Modulation;
Distorted Modulation
Bad Microphone Sensitivity
No/Low signaling
(PL, DPL, MDC)
Cannot Set Deviation
Balance

Table 19. Receiver Troubleshooting Chart

Possible Cause
1. Dead Battery Replace with charged battery.
2. Blown Fuse Send radio to depot.
3. On/Off Switch
4. Regulators
1. VOCON Board Send radio to depot.
2. RF Board
Programming a. Does the transmitted signal match the receiver
b. With the monitor function enabled, can the radio
Synthesizer Not On Check synthesizer frequency by measuring the transmitter
Frequency frequency; if off by more than ±1000Hz, realign.
1. Synthesizer Not Check synthesizer frequency by measuring the transmitter
frequency; if off by more than ≤ ±1000Hz, realign.
On Frequency
2. Antenna Switch/ Send radio to depot.
Connector
3. Receiver Front- Check RF front-end tuning for optimum sensitivity using the
End Tuning tuner.
VOCON Board Send radio to depot.

Table 20. Transmitter Troubleshooting Chart

Possible Cause
1. TX Power Level or Frequency
2. No Injection To Power Amplifier
3. Antenna Switch/Connector
1. Programming
2. VOCON Board
1. Check Deviation and Compensation
2. Microphone
1. Programming
2. VOCON Board
RF Board
Correction or Test (Measurements
Taken at Room Temperature)
configuration (PL, DPL, etc.)?
be unmuted?
Correction or Test (Measurements
Taken 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.
Basic Troubleshooting
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