(2) Do the operational test of the emergency lighting system (Ref. AMM TASK 33-51-00-710-001).

 「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 214
 201-299, May 01/05 CES

 4. Fault Isolation
_______________

R
R A. If the test gives a different maintenance message, do the trouble R shooting procedure related to the maintenance message.
R **ON A/C 001-003, 051-052,
 B. If the operational test gives the maintenance message:
 (1) EPSU COMM FWD L:

 - do the operational test of the emergency lights not with CIDS (Ref. AMM TASK 33-51-00-710-006).
 (a) If no LEDs come on or a red FAULT LED comes on:

 - 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 all the green OK LEDs come on:

 - do a check and repair the wiring between: POWER SUPPLY UNIT-EMERGENCY (10WL) pin X and DEU-B (300RH1) connector B/16, POWER SUPPLY UNIT-EMERGENCY (10WL) pin <P and DEU-B (300RH1) connector B/17 (Ref. ASM 33-51/01).

 (c) If the fault continues:

 - replace the DEU-B (300RH1) (Ref. AMM TASK 23-73-47-000-001) and (Ref. AMM TASK 23-73-47-400-001).

 (2) EPSU COMM EMER L:

 - do the operational test of the emergency lights not with CIDS (Ref. AMM TASK 33-51-00-710-006).
 (a) If no LEDs come on or a red FAULT LED comes on:

 - 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 all the green OK LEDs come on:

 - do a check and repair the wiring between: POWER SUPPLY UNIT-EMERGENCY (11WL) pin X and DEU-B (300RH4) connector B/16, POWER SUPPLY UNIT-EMERGENCY (11WL) pin <P and DEU-B (300RH4) connector B/17 (Ref. ASM 33-51/02).

 (c) If the fault continues:

 - replace the DEU-B (300RH4) (Ref. AMM TASK 23-73-47-000-001) and (Ref. AMM TASK 23-73-47-400-001).
 「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 215
 201-299, May 01/05 CES

 (3) EPSU COMM EMER R:

 - do the operational test of the emergency lights not with CIDS (Ref. AMM TASK 33-51-00-710-006).
 (a) If no LEDs come on or a red FAULT LED comes on:

 - 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 all the green OK LEDs come on:

 - do a check and repair the wiring between: POWER SUPPLY UNIT-EMERGENCY (12WL) pin X and DEU-B (300RH4) connector B/19, POWER SUPPLY UNIT-EMERGENCY (12WL) pin <P and DEU-B (300RH4) connector B/20 (Ref. ASM 33-51/02).

 (c) If the fault continues:

 - replace the DEU-B (300RH4) (Ref. AMM TASK 23-73-47-000-001) and (Ref. AMM TASK 23-73-47-400-001).

 (4) EPSU COMM AFT L:

 - do the operational test of the emergency lights not with CIDS (Ref. AMM TASK 33-51-00-710-006).
 (a) If no LEDs come on or a red FAULT LED comes on:

 - 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 all the green OK LEDs come on:

 - do a check and repair the wiring between: POWER SUPPLY UNIT-EMERGENCY (13WL) pin X and DEU-B (300RH5) connector B/16, POWER SUPPLY UNIT-EMERGENCY (13WL) pin <P and DEU-B (300RH5) connector B/17 (Ref. ASM 33-51/02).

 (c) If the fault continues:

 - replace the DEU-B (300RH5) (Ref. AMM TASK 23-73-47-000-001) and (Ref. AMM TASK 23-73-47-400-001).
R **ON A/C 004-049, 053-099, 101-105, 151-199, 201-299,
 B. If the operational test gives the maintenance message:
 (1) EPSU COMM FWD L:
 - do the operational test of the emergency lights not with CIDS (Ref. AMM TASK 33-51-00-710-006).
 (a) If no LEDs come on or a red FAULT LED comes on:
 - replace the POWER SUPPLY UNIT-EMERGENCY (10WL) (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001).
 「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 216
 201-299, May 01/05 CES

 (b) If the green SYSTEM OK LED comes on:

 - do a check and repair the wiring between: POWER SUPPLY UNIT-EMERGENCY (10WL) pin X and DEU-B (300RH1) connector B/16, POWER SUPPLY UNIT-EMERGENCY (10WL) pin <P and DEU-B (300RH1) connector B/17 (Ref. ASM 33-51/01).
　
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