- SW-INT LT/STBY COMPASS (2LF)

 - wiring from the circuit breaker (1LF) to the STBY COMPASS switch (2LF)

 - wiring from the standby compass (2FN) to the STBY COMPASS switch (2LF)

 - C/B LIGHTING/STBY/COMP/LT (1LF)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
IPC 331308
 AMM 34-22-00-710-001 Operational Test of the Standby Compass
 AMM 34-22-23-000-001 Removal of the Standby Compass (2FN)
 AMM 34-22-23-400-001 Installation of the Standby Compass (2FN)
 ASM 33-13/02

 3. Fault Confirmation
__________________
 A. Do the operational test of the standby compass (Ref. AMM TASK 34-22-00-710-001).
 4. Fault Isolation
_______________
 A. If during the operational test, when the INT LT/STBY COMPASS switch (2LF) is in the STBY COMPASS position, the lighting of the standby compass is inoperative:
 - do a check of the circuit breaker (1LF) status.
 (1) If the circuit breaker is closed:
 - do a check for 28VDC at pin 2B of the standby compass switch (2LF) (Ref. ASM 33-13/02).
 (a) If there is no 28VDC:
 - replace the SW-INT LT/STBY COMPASS (2LF) (Ref. IPC 331308).
 1 If the fault continues:
_
 - do a check and repair the wiring from the circuit breaker (1LF) to the STBY COMPASS switch (2LF) pin 1B (Ref. ASM 33-13/02).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞33-13-00∞∞∞∞∞∞∞∞∞∞Page 216
 Feb 01/98 CES (b) If there is 28VDC:

 - replace the COMPASS-STANDBY (2FN) (Ref. AMM TASK 34-22-23-000-001) and (Ref. AMM TASK 34-22-23-400-001).
 1_ If the fault continues:
 - do a check and repair the wiring from the standby compass
 (2FN) to the STBY COMPASS switch (2LF) pin 2B (Ref. ASM 33-
13/02).

 (2) If the circuit breaker is open:
 - close the circuit breaker (1LF).
 (a) If the circuit breaker trips again:

 - replace the COMPASS-STANDBY (2FN) (Ref. AMM TASK 34-22-23-000-001) and (Ref. AMM TASK 34-22-23-400-001).

 (b) If the circuit breaker stays closed and the fault continues:

 - replace the C/B LIGHTING/STBY/COMP/LT (1LF).
 B. Do the test given in Para. 3.

 ANNUNCIATOR LIGHT TEST AND DIMMING - FAULT ISOLATION PROCEDURES
_______________________________________________________________
 TASK 33-14-00-810-801
 Failure of One Annunciator Light Only
 1. Possible Causes
_______________
 - lamp

 - annunciator-light test and interface-board

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 33-14-00-710-001 Operational Test of the Annunciator Light Test System in the Cockpit AMM 33-14-33-000-001 Removal of the Annunciator-Light Test and Interface-Board (1LP, 2LP, 3LP, 4LP, 5LP, 6LP, 7LP, R 8LP, 9LP, 10LP, 11LP, 12LP, 18LP, 19LP, 20LP) AMM 33-14-33-400-001 Installation of the Annunciator-Light Test and Interface-Board (1LP, 2LP, 3LP, 4LP, 5LP, 6LP, 7LP,
R 8LP, 9LP, 10LP, 11LP, 12LP, 18LP, 19LP, 20LP) ASM 33-14/XX 33-14-00-991-001 Fig. 201
 3. Fault Confirmation
__________________
 A. Test Do the operational test of the annunciator light test system (Ref. AMM TASK 33-14-00-710-001). (Ref. Fig. 201/TASK 33-14-00-991-001)
 4. Fault Isolation
_______________
 A. If one annunciator light is off during the test:
 - replace the related lamp.
 (1) If the fault continues:
 - replace the related annunciator-light test and interface-board (Ref. AMM TASK 33-14-33-000-001) and (Ref. AMM TASK 33-14-33-400-001).
 (a) If the fault continues:
 - do a check and repair the related wiring (Ref. ASM 33-14/XX).
 B. Do the test given in Para. 3.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞33-14-00∞∞∞∞∞∞∞∞∞∞Page 201
 May 01/05 CES

 Annunciator Light Test and Dimming
　
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