TASK 33-51-00-810-804
EPSU - 115 VAC Fault Message
1. Possible Causes
_______________
- POWER SUPPLY UNIT-EMERGENCY (10WL)
- wiring
- POWER SUPPLY UNIT-EMERGENCY (11WL)
- POWER SUPPLY UNIT-EMERGENCY (12WL)
- POWER SUPPLY UNIT-EMERGENCY (13WL)
2. Job Set-up Information
______________________
A. Referenced Information
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REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 33-51-00-710-001 Operational Test of Emergency Lights by 'TEST EMER
LIGHT SYS' Pushbutton AMM 33-51-38-000-001 Removal of the Emergency Power-Supply Unit (EPSU) AMM 33-51-38-400-001 Installation of the Emergency Power-Supply Unit
(EPSU)
ASM 33-51/01
3. Fault Confirmation
__________________
A. Test
(1) Do the operational test of the emergency lighting system (Ref. AMM TASK 33-51-00-710-001).
4. Fault Isolation
_______________
A. If the operational test gives the maintenance message:
(1) EPSU 115 VAC FWD L:
- do a check for 115 VAC at the POWER SUPPLY UNIT-EMERGENCY (10WL) pin K.
(a) If there is 115 VAC:
- replace the POWER SUPPLY UNIT-EMERGENCY (10WL) (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001).
(b) If there is no 115 VAC:
- do a check and repair the wiring between: POWER SUPPLY UNIT-EMERGENCY (10WL) pin K and CB 3WL, POWER SUPPLY UNIT-EMERGENCY (10WL) pin M and GND (Ref. ASM 33-51/01).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞33-51-00∞∞∞∞∞∞∞∞∞∞Page 210
201-299, May 01/05 CES
(2) EPSU 115 VAC EMER L:
- do a check for 115 VAC at POWER SUPPLY UNIT-EMERGENCY (11WL) pin K.
(a) If there is 115 VAC:
- replace the POWER SUPPLY UNIT-EMERGENCY (11WL) (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001).
(b) If there is no 115 VAC:
- do a check and repair the wiring between: POWER SUPPLY UNIT-EMERGENCY (11WL) pin K and CB 3WL, POWER SUPPLY UNIT-EMERGENCY (11WL) pin M and GND (Ref. ASM 33-51/01).
(3) EPSU 115 VAC EMER R:
- do a check for 115 VAC at
POWER SUPPLY UNIT-EMERGENCY (12WL) pin K.
(a) If there is 115 VAC:
- replace the POWER SUPPLY UNIT-EMERGENCY (12WL) (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001).
(b) If there is no 115 VAC:
- do a check and repair the wiring between: POWER SUPPLY UNIT-EMERGENCY (12WL) pin K and CB 3WL, POWER SUPPLY UNIT-EMERGENCY (12WL) pin M and GND (Ref. ASM 33-51/01).
(4) EPSU 115 VAC AFT L:
- do a check for 115 VAC at POWER SUPPLY UNIT-EMERGENCY (13WL) pin K.
(a) If there is 115 VAC:
- replace the POWER SUPPLY UNIT-EMERGENCY (13WL) (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001).
(b) If there is no 115 VAC:
- do a check and repair the wiring between: POWER SUPPLY UNIT-EMERGENCY (13WL) pin K and CB 3WL, POWER SUPPLY UNIT-EMERGENCY (13WL) pin M and GND (Ref. ASM 33-51/01).
B. Do the test as given in the Para. 3.A.
5. Close-up
________
A. Put the aircraft back to its initial configuration.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞33-51-00∞∞∞∞∞∞∞∞∞∞Page 211
201-299, May 01/05 CES
TASK 33-51-00-810-805
EPSU - 28 VDC Fault Message
1. Possible Causes
_______________
- POWER SUPPLY UNIT-EMERGENCY (10WL)
- wiring
- POWER SUPPLY UNIT-EMERGENCY (11WL)
- POWER SUPPLY UNIT-EMERGENCY (12WL)
- POWER SUPPLY UNIT-EMERGENCY (13WL)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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