- do a check of the diode module (1802VD) between the pin
A/33 and A/34 and replace the diode module (1802VD), if
necessary.
* If the fault continues:
- do a check and repair the wiring between:
. the pin 2 of the circuit breaker (14XB) and the pins
A/X1 and A/A1 of the relay (7XB),
. the pin A/X2 of the relay (7XB) and the ground through
the pushbutton switch (23XE).
b If there is 28 VDC, do the step that follows:
_
R (3) Do a check for 28 VDC at the coil of the contactor (2XB) with the R EMER GEN TEST pushbutton pushed and the ELEC BUS/TIE pushbutton in R the OFF position.
(a) If there is 28 VDC:
- replace the CNTOR-STAT INV (2XB) (Ref. AMM TASK 24-28-55-000-001) and (Ref. AMM TASK 24-28-55-400-001).
1 If the fault continues:
_
- replace the STAT INV (3XB) (Ref. AMM TASK 24-28-51-000-001) and (Ref. AMM TASK 24-28-51-400-001).
(b) If there is no 28 VDC:
- do a check for 28 VDC at the pin A/C2 of the relay (15XC).
1 If there is no 28 VDC:
_
- replace the RELAY (7XB).
2 If the fault continues:
_
- replace the RELAY (6XB).
a If the fault continues:
_
- replace the RELAY - BUS 1XP CTL (15XC).
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* If the fault continues:
. replace the RELAY - BUS 2XP CTL (16XC).
* If the fault continues:
. replace RELAY - EMER CONDITION (12XE).
b If the fault continues:
_
- do a check and repair the wiring between:
* the pin A/A2 of the relay (7XB) and the pins A/X1 and A/A2 of the relay (6XB)
* the pin A/A1 of the relay (6XB) and the ground through the contactor (2XB)
* the pin A/X2 of the relay (6XB) and the ground (Ref. ASM 24-28/01).
D. If the test confirms the fault:
- replace the P/BSW - ELEC/BUS TIE (10XU).
(1) If the fault continues:
- replace the RELAY - BUS TIE (30XU1), RELAY - SMOKE (30XU2).
(2) If the fault continues:
- do a check and repair the wiring between respectively: . the ELEC/BTC1/SPLY circuit breaker (15XU) and the ground through the APU GLC (3XS), the EPC (3XG), the relays (5XG, 4XS, 4XU1, 4XU2, 9XU2, 30XU1) and the BUS TIE pushbutton switch (10XU) . the pin A/B3 of the relay (30XU1) and the pin A/9C of the GCU 1 through the BTC 1 (11XU1) . the ELEC/GEN1/OFF/BTC1 SPLY circuit breaker (5XU) and the pin A/X1 of the relay (30XU1) through the relays (5XG, 4XU1) and the GLC 1 (9XU1) . the ELEC/GEN2/OFF/BTC2 SPLY circuit breaker (8XU) and the ground, through the relays (4XU2, 30XU2) and the BUS TIE pushbutton switch (10XU) . the pin A/B3 of the relay (30XU2) and the pin A/9C of the GCU 2 through the BTC 2 (11XU2) . the ELEC/GEN1/OFF/BTC2 SPLY circuit breaker (14XU) and the pin A/X1 of the relay (30XU2) through the APU GLC (3XS), the EPC (3XG), the relays (5XG, 4XS, 4XU2, 4XU1) and the GLC 1 (9XU1) . the ELEC/GEN1/OFF/BTC1 SPLY circuit breaker (5XU) and the relay (4XU2) through the relay (5XG), the APU GLC (3XS), the EPC (3XG) and the BTC 1 (11XU1) (Ref. ASM 24-22/02) and (Ref. ASM 24-23/02) and (Ref. ASM 24-22/03).
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CES
E. If the test confirms the fault (amber crosses replace the STAT INV electrical parameters):
- do a check of the status of the circuit breaker (27WV).
(1) If the circuit breaker is closed:
- do a check for 115VAC at the pin 2 of the circuit breaker (27WV).
(a) If there is 115VAC:
- do a check and repair the wiring between the pin 2 of the circuit breaker (27WV) and the first branch point (Ref. ASM 24-24/02).
(b) If there is no 115VAC:
- do a check and repair the wiring between the pin 1 of the circuit breaker (27WV) and the pin A/A of the STAT INV (3XB) (Ref. ASM 24-24/02).
(2) If the circuit breaker is open:
- close it.
(a) If the circuit breaker trips:
- do a check of the wiring for a short to ground between the pin 2 of the circuit breaker (27WV) and the first branch point (Ref. ASM 24-24/02).
1_ If the wiring is not correct:
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本文链接地址：A320 Trouble Shooting Manual 排故手册 电源 3(34)
