INSTRUCTION MANUAL
20221529 / C vii
GC80/GC85 Master Compass ........................................ 67
GC80 Expanded Control Unit......................................... 67
7.6 Power ............................................................................. 68
GC80/GC85 Master Compass ........................................ 68
GC80 Expanded Control Unit......................................... 68
7.7 Environmental Specification ............................................... 68
GC80/GC85 Master Compass ........................................ 68
GC80 Expanded Control unit ......................................... 68
8 DRAWINGS .....................................................................69
8.1 Drawings included ............................................................ 70
9 SPARE PART LIST............................................................77
9.1 GC80 Expanded Gyro system ............................................. 78
9.2 GC85 Expanded Gyro system ............................................. 78
9.3 Optional equipment, GC80/85 Expanded system ................... 79
10 TERMINAL LAYOUT .........................................................81
10.1 GTERM board ................................................................... 82
TB1 ........................................................................... 82
TB2 ........................................................................... 84
11 DIP SWITCH SETTINGS ...................................................87
11.1 Expanded control unit ....................................................... 88
GPOWER board ........................................................... 89
GTERM board.............................................................. 90
SCC board.................................................................. 91
SIFC board................................................................. 95
12 ALARM MESSAGES AND CORRECTIVE ACTIONS.............101
12.1 The alarm system........................................................... 102
12.2 Acknowledging an alarm.................................................. 103
12.3 Fault finding .................................................................. 104
Main power failure..................................................... 104
Internal power failure in Control unit............................ 105
Inverter failure ......................................................... 105
Zero cross failure ...................................................... 105
System communication failure .................................... 106
GPS communication or data failure .............................. 106
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