If, on the lower ECAM DU, on the ELECpage:

 - the line between the AC ESS bus and the ESS TR is green,

 - the ESS TR voltage is 28VDC.

 Do the trouble shooting given in Para.
 4.B.
 If, on the ELEC page:
 - the line between the AC ESS bus and the ESS TR is green,

 - the ESS TR voltage is OVDC.

 Do the trouble shooting given in Para.
 4.C.
 If, on the ELEC page:
 - the line between the AC ESS bus and the ESS TR does not appear,

 - the ESS TR voltage is OVDC.

 Do the trouble shooting given in Para.
 4.D.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞24-60-00∞∞∞∞∞∞∞∞∞∞Page 238
 Aug 01/00R
 CES

 4. Fault Isolation
_______________

 A. If the test confirms the fault:
 - replace the CNTOR-ESS TR (3PE) (Ref. AMM TASK 24-34-55-000-001) and (Ref. AMM TASK 24-34-55-400-001).
 (1) If the fault continues:
 - do a check of the status of the circuit breaker (5PE).
 (a) If the circuit breaker is closed:

 - do a check and repair the wiring between respectively: . the 28VDC output of the ESS TR (1PE) and the pin A/F of the contactor (3PE) . the pins A/G and B/3 of the contactor (3PE) . the pin B/5 of the contactor (3PE) and the pin B/F of the ESS TR (1PE) (Ref. ASM 24-34/01)

 (b) If the circuit breaker is open:

 - close it.
 1 If it trips:
_
 - do a check of the wiring for short to ground between the circuit breaker (5PE) and the pin B/3 of the contactor (3PE) (Ref. ASM 24-34/01).
 a If the wiring is not correct:
_ - repair it.
 b If the wiring is correct:
_
 - replace the C/B-ESS TR CNTOR CTL (5PE).
 B. If the test confirms the fault:
 - replace the TR-ESS (1PE) (Ref. AMM TASK 24-34-51-000-001) and (Ref. AMM TASK 24-34-51-400-001).
 (1) If the fault continues:
 - do a check of the status of the circuit breaker (4PE).
 (a) If the circuit breaker is closed:

 - do a check and repair the wiring between the pins L1, L2, L3 of the AC ESS BUS contactor (15XE) and the pins A/A, A/B, A/C of the ESS TR (1PE) (Ref. ASM 24-34/01).

 (b) If the circuit breaker is open:

 - close it.
 1 If it trips:
_
 - do a check of the wiring for short to ground between the pins A2, B2, C2 of the circuit breaker (4PE) and the pins A/A, A/B, A/C of the ESS TR (1PE) (Ref. ASM 24-34/01).
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 Aug 01/00R CES

 a If the wiring is not correct:
_ - repair it.
 b If the wiring is correct:
_ - replace the C/B-ESS TR SPLY (4PE).
 C. If the test confirms the fault:
 - replace the CNTOR-AC ESS BUS SWITCHING (15XE) (Ref. AMM TASK 24-24-55-000-002) and (Ref. AMM TASK 24-24-55-400-002).
 (1) If the fault continues:
 - do a check of the status of the circuit breaker (15PC)
 (a) If the circuit breaker is closed:

 - do a check and repair the wiring between respectively: . the pin K1 of the contactor (15XE) and the pins A/B and B/B of the contactor (3XC)
 * through the contactor (4PC) and the relay (17PC)

 * through the contactors (5PU1) and (5PU2)
 . the pin A/D of the contactor (3XC) and the pin B/K of the
 contactor (15XE), through the timer (33XE)
 . the pin B/D of the contactor (3XC) and the first branch point
 . the pin B/L of the contactor (15XE) and the ground through
 the timer (33XE) (Ref. ASM 24-24/02) and (Ref. ASM 24-35/01).

 (b) If the circuit breaker is open:

 - close it.
 1 If it trips:
_
 - do a check of the wiring for short to ground between the circuit breaker (15PC) and the pin B/K of the contactor (15XE), through the contactors (5PU1, 5PU2, 3PC), the relay (17PC), the contactor (3XC) and the timer (33XE) (Ref. ASM 24-24/02) and (Ref. ASM 24-35/01).
 a If the wiring is not correct:
_ - repair it.
 b If the wiring is correct:
_ - replace the C/B-AC ESS/BUS/EMER/CNTOR/SPLY (15PC).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞24-60-00∞∞∞∞∞∞∞∞∞∞Page 240
　
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 電源 3(153)