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 28 VDC FWD L:
- do a check for 28 VDC at the POWER SUPPLY UNIT-EMERGENCY (10WL).
(a) If there is 28 VDC:
- 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 28 VDC:
- do a check and repair the wiring between: POWER SUPPLY UNIT-EMERGENCY (10WL) pin V and CB 2WL, POWER SUPPLY UNIT-EMERGENCY (10WL) pin U and GND (Ref. ASM 33-51/01) and (Ref. ASM 33-51/02).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞33-51-00∞∞∞∞∞∞∞∞∞∞Page 212
201-299, May 01/05 CES
(2) EPSU 28 VDC EMER L:
- do a check for 28 VDC at the POWER SUPPLY UNIT-EMERGENCY (11WL).
(a) If there is 28 VDC:
- 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 28 VDC:
- do a check and repair the wiring between: POWER SUPPLY UNIT-EMERGENCY (11WL) pin V and CB 1WL, POWER SUPPLY UNIT-EMERGENCY (11WL) pin U and GND (Ref. ASM 33-51/01) and (Ref. ASM 33-51/02).
(3) EPSU 28 VDC EMER R:
- do a check for 28 VDC at POWER SUPPLY UNIT-EMERGENCY (12WL).
(a) If there is 28 VDC:
- 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 28 VDC:
- do a check and repair the wiring between: POWER SUPPLY UNIT-EMERGENCY (12WL) pin V and CB 2WL, POWER SUPPLY UNIT-EMERGENCY (12WL) pin U and GND (Ref. ASM 33-51/01) and (Ref. ASM 33-51/02).
(4) EPSU 28 VDC AFT L:
- do a check for 28 VDC at POWER SUPPLY UNIT-EMERGENCY (13WL).
(a) If there is 28 VDC:
- 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 28 VDC:
- do a check and repair the wiring between: POWER SUPPLY UNIT-EMERGENCY (13WL) pin V and CB 1WL, POWER SUPPLY UNIT-EMERGENCY (13WL) pin U and GND (Ref. ASM 33-51/01) and (Ref. ASM 33-51/02).
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 213
201-299, May 01/05 CES
TASK 33-51-00-810-806
EPSU - Communication Fault Message
1. Possible Causes
_______________
- DEU-B (300RH1)
- DEU-B (300RH4)
- DEU-B (300RH5)
- 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 -------------------------------------------------------------------------------
AMM 23-73-00-740-005 BITE Test of the Cabin Intercommunication Data System
(CIDS) through the CFDS AMM 23-73-47-000-001 Removal of the Decoder/Encoder Units (DEU) B 300RH AMM 23-73-47-400-001 Installation of the Decoder/Encoder Unit (DEU) B
300RH AMM 33-51-00-710-001 Operational Test of Emergency Lights by 'TEST EMER
LIGHT SYS' Pushbutton AMM 33-51-00-710-006 Operational Test of Emergency Lights not with CIDS 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 ASM 33-51/02 ASM 33-51/02
3. Fault Confirmation
__________________
A. Test
(1) Do the CIDS BITE test through the CFDS (Ref. AMM TASK 23-73-00-740-005).
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