Sec 2: 9-2 Basic Troubleshooting: Operational Error Codes
9.2 Operational Error Codes
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 9-2 to aid in understanding particular operational error codes.
02/90 General DSP Hardware Failure (DSP startup message not 
received correctly)
Turn the radio off, then on
09/10 Secure Hardware Error Turn the radio off, then on
09/90 Secure Hardware Fatal Error Turn the radio off, then on
Hardware board absent/
Hardware board absent 
then
Man-Down Hw error
Expansion board is not connected properly to the radio Ensure the Expansion 
board is fixed in place
Note: If the corrective action does not fix the failure, send the radio to the depot.
Table 9-2.  Operational Error Code Displays
Error Code Description Corrective Action
FAIL 001 Synthesizer Out-of-Lock 1. Reprogram external codeplug
2. Send radio to depot
FAIL 002 Selected Mode/Zone Codeplug 
Checksum Error
Reprogram external codeplug
Table 9-1.  Power-Up Error Code Displays (Continued)
Error Code Description Corrective Action