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Operational Error
Codes
Error Code
FAIL 001
FAIL 002
Symptom
Radio Dead; Display Does
Not Light Up
Radio Dead; Display
Lights Up
No Receiver Audio or
Receiver Does Not Unmute
Audio Distorted or Not Loud
Enough
RF Sensitivity Poor
Radio Will Not Turn Off
32
During radio operation, the radio performs dynamic tests to determine
if the radio is working properly. Problems detected during these tests
are presented as error codes on the radio's display. The presence of an
error code should prompt a user that a problem exists and that a
service technician should be contacted. Use Table 15 to aid in
understanding particular operational error codes.
Table 15 Operational Error Code Displays
Description
Synthesizer Out-of-Lock
Selected Mode/Zone Codeplug Checksum Error
Table 16 Receiver Troubleshooting Chart
Possible Cause
1. Dead Battery
2. Blown Fuse
3. On/Off Switch
4. Regulators
1. Controller Board
2. RF Board
Programming
Synthesizer Not On
Frequency
1. Synthesizer Not
On Frequency
2. Antenna Switch
3. Receiver Front-
End Tuning
(VHF/ UHF only)
Controller Board
Correction or Test (Measurements
Taken at Room Temperature)
Replace with charged battery.
Send radio to depot.
Send radio to depot.
a. Does the transmitted signal match the receiver
configuration (PL, DPL, etc.)?
b. With the monitor function enabled, can the radio
be unmuted?
Check synthesizer frequency by measuring the transmitter
frequency; if off by more than ±250Hz, realign.
Check synthesizer frequency by measuring the transmitter
frequency; if off by more than ≤ ±600Hz, realign.
Send radio to depot.
Check RF front-end tuning for optimum sensitivity using
the RSS.
Send radio to depot.
Corrective Action
a. Reprogram codeplug
b. Send radio to depot
Reprogram codeplug