Zonge GDP-32 - Maintenance and Trouble-Shooting Maintenance

May 2002
17. MAINTENANCE AND TROUBLE-SHOOTING
17.1 BOARD FUNCTIONS AND DIAGNOSTICS ...................... 2
THE DIAGNOSTICS PROGRAM.......................................................................... 4
D
IAGNOSTIC EXAMPLES .................................................................................. 8
NANOTEM DIAGNOSTICS (FOR BOARD 194)................................................ 12
17.2 HANDLING BOARDS AND EPROMS............................... 14
REMOVING AND INSERTING BOARDS............................................................. 14
17.3 DIGITAL BOARD PROBLEMS..........................................16
T
HE CALIBRATION AND TIMING BOARD........................................................ 16
T
HE FRONT PANEL ASSEMBLY (MPU AND BD287 BOARDS) ....................... 16
17.4 ANALOG BOARD PROBLEMS.......................................... 16
R
EMOVING ANALOG BOARDS ....................................................................... 16
R
EPLACING ANALOG BOARDS....................................................................... 16
17.5 BATTERY AND POWER PROBLEMS .............................20
TROUBLE-SHOOTING POWER PROBLEMS ...................................................... 20
R
EPLACING BATTERIES ................................................................................. 22
17.6 SYNCHRONIZATION PROBLEMS .................................. 24
FAILURE TO RESET OR ADJUST FREQUENCY ............................................... 24
M
ECHANICAL ADJUSTMENT OF CRYSTALS ................................................... 25
17.7 COLD WEATHER OPERATION .......................................28
17.8 PINOUTS FOR CONNECTORS.......................................... 29
17.9 ERROR MESSAGES ............................................................. 36