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3. MAINTENANCE, TROUBLESHOOTING
3-6
Internal GPS test
The internal GPS receiver can be checked for proper operation as follows:
1. Press the MENU key to open the main menu.
2. Select DIAGNOSTICS then press the ENT key.
3. Select TRANSPONDER TEST then press the ENT key.
4. Select GPS TEST then press the ENT key to start the test. The program no.
and the test results appear as shown below.
OK: Normal
NG: (No Good). NG appears along with reason for NG:
DATA BACKUP ERR: Data backup problem
GPS COMMUNICATION ERROR: Comm. error with internal GPS
receiver
PARAMETER BACKUP ERR: Parameter backup problem
ROM ERROR
RAM ERROR
ANTENNA ERROR
[GPS TEST]
PROGRAM NO.
485026xxxx
TEST: OK
xxxx: Program Version No.
5. Press the MENU key to return to the DIAGNOSTICS sub-menu..