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 the External Power AMM 24-42-55-000-001 Removal of the Contactors (12XX, 14XX) AMM 24-42-55-400-001 Installation of the Contactors (12XX, 14XX) ASM 24-42/01
 3. Fault Confirmation
__________________
 A. Job Set-up
 (1) Energize the ground service network with the ground power unit (Ref. AMM TASK 24-42-00-861-001).
 B. Test
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the forward attendant panel  - The ceiling forward and aft lights (R 120RH, push the CABIN WDO and side) do not come on. CABIN CLG pushbutton switches. - the window forward and aft lights (R
 side) do not come on.
 「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 ∞∞24-42-00∞∞∞∞∞∞∞∞∞∞Page 205
 Aug 01/00R
 CES

 4. Fault Isolation
_______________

R **ON A/C 001-049, 051-062, 101-105, 151-152, 201-205,
 A. If the test confirms the fault:
 - do a check of the status of the circuit breaker (1XX)
 (1) If the circuit breaker is closed:
 - do a check for 115VAC on the pins A/M, A/L and A/K of the contactor (14XX) (Ref. ASM 24-42/01).
 (a) If there is no 115VAC:
 - do a check of the wiring between the circuit breaker (1XX) and the contactor (14XX) (Ref. ASM 24-42/01).
 1 If there is no continuity:
_ - repair the wiring.
 2 If there is continuity:
_
 - replace the C/B-TR2/SVCE/BUS2/SPLY (1XX).
 (b) If there is 115VAC:
 - replace the CNTOR-AC & DC GND SVCE SPLY (14XX) (Ref. AMM TASK 24-42-55-000-001) and (Ref. AMM TASK 24-42-55-400-001).
 1 If the fault continues:
_
 - replace the CNTOR-TR 2/AC SVCE BUS NORM SPLY (14PU) (Ref. AMM TASK 24-32-55-000-001) and (Ref. AMM TASK 24-32-55-400-001).
 2 If the fault continues:
_
 - do a check and repair the wiring: . between the pin B/3 of the contactor (14XX) and the pin B/6 of the contactor (14PU) . between the pin B/5 of the contactor (14XX) and the first terminal block . between the pin B/8 of the contactor (14PU) and the first terminal block (Ref. ASM 24-42/01).
 (2) If the circuit breaker is open:
 - close it.
 (a) If the circuit breaker trips:
 - do a check of the wiring for short to ground between the circuit breaker (1XX) and the busbar (214XP) (Ref. ASM 24-42/01).
 1 If there is a short to ground:
_ - repair the wiring.
 「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 ∞∞24-42-00∞∞∞∞∞∞∞∞∞∞Page 206
 May 01/05 CES 2 If there is no short to ground:

_
 - replace the C/B-TR2/SVCE/BUS2/SPLY (1XX).
R **ON A/C 063-099, 106-149, 153-199, 206-299, 301-399, 401-499,
 A. If the test confirms the fault:
 - do a check of the status of the circuit breaker (1XX)
 (1) If the circuit breaker is closed:
 - do a check for 115VAC on the pins 13, 14, 15 of the module 20XX (Ref. ASM 24-42/01).
 (a) If there is no 115VAC:
 - do a check of the wiring between the circuit breaker (1XX) and the module 20XX (Ref. ASM 24-42/01).
 1 If there is no continuity:
_ - repair the wiring.
 2 If there is continuity:
_
 - replace the C/B-TR2/SVCE/BUS2/SPLY (1XX).
 (b) If there is 115VAC:
 - replace the CNTOR-AC & DC GND SVCE SPLY (14XX) (Ref. AMM TASK 24-42-55-000-001) and (Ref. AMM TASK 24-42-55-400-001).
 1 If the fault continues:
_
 - replace the CNTOR-TR 2/AC SVCE BUS NORM SPLY (14PU) (Ref. AMM TASK 24-32-55-000-001) and (Ref. AMM TASK 24-32-55-400-001).
 2 If the fault continues:
_
 - do a check and repair the wiring: . between the pin B/3 of the contactor (14XX) and the pin B/6 of the contactor (14PU) . between the pin B/5 of the contactor (14XX) and the first terminal block . between the pin B/8 of the contactor (14PU) and the first terminal block (Ref. ASM 24-42/01).
 (2) If the circuit breaker is open:
 - close it.
 (a) If the circuit breaker trips:
 - do a check of the wiring for short to ground between the circuit breaker (1XX) and the busbar (214XP) (Ref. ASM 24-42/01).
 1 If there is a short to ground:
_ - repair the wiring.
 「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 ∞∞24-42-00∞∞∞∞∞∞∞∞∞∞Page 207
　
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