增强型近地警告系统 Enhanced Ground Proximity Warning 航线维护手册 Systems Line Maintenance Manual(27)

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Probable Cause:  Electrical short at the audio cancel input. 
Action:  Verify wiring from the audio cancel switch. 
Enunciation:  “ALL MODES INHIBIT INVALID” 
Probable Cause:  Electrical short at the audio cancel input. 
Action:  Verify wiring from the audio cancel input. 
Enunciation:  “GLIDESLOPE CANCEL INVALID” 
Probable Cause:  Electrical short at the glideslope cancel input. 
Action:  Verify wiring from the glideslope cancel input. 
Enunciation:  “ILS SELECT INVALID” 
Probable Cause:  Electrical short at the ILS Select inputs. 
Action:  Verify wiring from the ILS Select switches. 

THE FOLLOWING EXTERNAL FAULTS ARE AVAILABLE IN LEVEL 2 SELF-TEST: 
Enunciation:  “FLAP ANGLE UNREASONABLE” 
Probable Cause:  Electrical short at the flap discrete input(s). 
Action:  Verify wiring from the flap-input discrete(s). 
Description:  SELF-TEST INVALID (WinViews ONLY) 
Probable Cause:  Electrical short at the Self-Test input. 
Action:  Verify wiring from the Self-Test discrete. 
Enunciation:  “MOMENTARY TERRAIN SELECT 1 (or 2) INVALID” 
Probable Cause:  Electrical short at the Terrain Select inputs. 
Action:  Verify wiring from the terrain “ON” switches. 
Enunciation:  “PROGRAM PIN READ ERROR” 
Probable Cause:  Wiring error to the program pins. 
Action:  Verify wiring to each program pin. 
Enunciation:  “CALLOUTS OPTION INVALID” 
Probable Cause:  Wiring error to the Callout Options program pins. 
Action:  Verify wiring to the Callout Options program pins. 
Enunciation:  “AUDIO MENU INVALID” 
Probable Cause:  Wiring error to the Audio Menu program pins. 
Action:  Verify wiring to the Audio Menu program pins. 
Enunciation:  “PROGRAM PIN <XX> INVALID” (where XX is a number) 
Probable Cause:  Invalid option selected. 
Action:  Verify wiring to all program pins. 
Description:  “CONFIGURATION MODULE READ ERROR” (WinViews ONLY) 
Probable Cause:  The Configuration Module is faulty. 
Action:  Cycle power to the EGPWC.  If the problem persist, reprogram the Configuration Module. IF the condition persist, replace the Program Module.  See Appendix C. 
Description:  “CONFIGURATION MODULE NOT PROGRAMMED” (WinViews ONLY) 
Probable Cause:  The Configuration Module is new, or never has been programmed. 
Action:  Reprogram the Configuration Module.  See Appendix C. 
　
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