F. If the operational test gives no maintenance message, but the work light does not come on when you push the pushbutton switch:
- replace the related lamp (Ref. AMM TASK 33-27-12-000-001) and (Ref. AMM TASK 33-27-12-400-001).
(1) If the fault continues:
- do a check of the related PUSHBUTTON SWITCH and replace it if necessary (Ref. ASM 33-27/01).
(2) If the fault continues:
- replace the related PWR UNIT (Ref. AMM TASK 33-27-38-000-001) and (Ref. AMM TASK 33-27-38-400-001).
(3) If the fault continues:
- do a check and repair the wiring between: PWR UNIT (3LZ) conn. A/D and L FWD ATTND SEAT (2063VU1) pin 1, PWR UNIT (3LZ) conn. A/G and L FWD ATTND SEAT (2063VU1) pin 3, GND and L FWD ATTND SEAT (2063VU1) pin 2, PWR UNIT (13LZ) conn. A/F and R AFT ATTND SEAT (2062VU2) pin 1, GND and R AFT ATTND SEAT (2062VU2) pin 2, PWR UNIT (12LZ) conn. A/F and L AFT ATTND SEAT (2062VU1) pin 1, GND and L AFT ATTND SEAT (2062VU1) pin 2 (Ref. ASM 33-27/01).
G. If the test gives no maintenance message, but no work lights come on:
- do a check of the FAP (120RH) and replace it if necessary (Ref. AMM TASK 23-73-15-000-001) and (Ref. AMM TASK 23-73-15-400-001).
(1) If the fault continues:
- do a check of the PWR SPLY RELAY (2LZ) and replace it if necessary.
(2) If the fault continues:
- do a check and repair the wiring between: PWR UNIT (12LZ) conn. A/A and RELAY (2LZ) conn. A/B1, PWR UNIT (13LZ) conn. A/A and RELAY (2LZ) conn. A/B1, PWR UNIT (3LZ) conn. A/A and RELAY (2LZ) conn. A/B1, FAP (120RH) conn. A/13 and RELAY (2LZ) conn. A/X1, CB (1LZ) and RELAY (2LZ) conn. A/B2, GND and RELAY (2LZ) conn. A/X2 (Ref. ASM 33-27/01).
H. Do the test as given in the Para. 3.A.
5. Close-up
________
A. Put the aircraft back to its initial configuration.
「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 ∞∞33-27-00∞∞∞∞∞∞∞∞∞∞Page 203
Feb 01/98 CES
SERVICE AREA LIGHTING - FAULT ISOLATION PROCEDURES
__________________________________________________
TASK 33-31-00-810-801
Service Area Lights - One or Two Service Area Lights in Section 19 do not come
on
1. Possible Causes
_______________
- SERVICE AREA LIGHT
- wiring
- ON-OFF SWITCH 3LJ
- lamps
- SERVICE AREA LIGHTS 4LJ (5LJ)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 33-31-00-710-001 Operational Test of the Service Area Lighting
AMM 33-31-11-000-001 Removal of the Service Area Light 6LJ
AMM 33-31-11-400-001 Installation of the Service Area Light 6LJ
ASM 33-31/01
3. Fault Confirmation
__________________
A. Do the operational test of the Service Area Lighting (Ref. AMM TASK 33-31-00-710-001)
4. Fault Isolation
_______________
A. If the operational test confirms the fault in one light:
- replace the lamp.
(1) If the fault continues:
- do a check for 28 VDC at the related SERVICE AREA LIGHT pin 1 (Ref. ASM 33-31/01).
(a) If there is approx. 28 VDC:
- replace the related SERVICE AREA LIGHT (Ref. AMM TASK 33-31-11-000-001) and (Ref. AMM TASK 33-31-11-400-001).
(b) If there is no 28 VDC:
- do a check and repair the wiring if necessary between the: related SERVICE AREA LIGHT pin 1 and ON-OFF SWITCH 3LJ pin 1, related SERVICE AREA LIGHT pin 2 and GND (Ref. ASM 33-31/01).
「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 ∞∞33-31-00∞∞∞∞∞∞∞∞∞∞Page 201
Feb 01/98 CES
(2) If the fault continues:
- do a check of the ON-OFF SWITCH 3LJ and replace it if necessary.
(3) If the fault continues:
- do a check and repair the wiring between: ON-OFF SWITCH 3LJ pin 2 and CB 1LJ (Ref. ASM 33-31/01).
B. If the test confirms the fault in the two lights:
- replace the two lamps.
(1) If the fault continues:
- do a check for 28 VDC at the two SERVICE AREA LIGHTS pin 1 (Ref. ASM 33-31/01).
(a) If there is approx. 28 VDC:
- replace the two SERVICE AREA LIGHTS 4LJ (5LJ) (Ref. AMM TASK 33-31-11-000-001) and (Ref. AMM TASK 33-31-11-400-001).
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