- replace the BSCU (10GG) (Ref. AMM TASK 32-42-34-000-001) and (Ref. AMM TASK 32-42-34-400-001).
(2) If there is no 28VDC:
- do a check for a ground signal at pin AB/15K of the BSCU (10GG) (Ref. ASM 32-42/01).
(a) If there is no ground signal:
- repair the wiring from the BSCU (10GG) pin AB/15K to the ground terminal (Ref. ASM 32-42/01).
(b) If there is a ground signal:
- replace the SW-A/SKID & NW STRG (5GG) (Ref. ASM 32-42/01).
1 If the fault continues:
_
- do a check and repair the wiring from the BSCU (10GG) to the switch (5GG), pin AB/14K to pin 2E (Ref. ASM 32-42/01)
- do a check and repair the wiring from the switch (5GG) pin 1E to the circuit breaker (2GG) (Ref. ASM 32-42/01).
2 If the fault continues:
_
- replace the C/B - HYD/BRK & STRG/SYS 1/IND & SPLY (2GG) (Ref. ASM 32-42/01).
D. If the circuit breaker (2GG) is open:
- disconnect these six units:
BSCU (10GG)
PRESS XDCR-NORM BRK WHEEL 3 (12GG)
PRESS XDCR-NORM BRK WHEEL 2 (13GG)
RELAY-WHEEL 1 SPEED (25GG)
SW-A/SKID & NW STRG (5GG)
BOARD-ANN LT TEST & INTFC (1LP).
- close the circuit breaker (2GG).
「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 ∞∞32-42-00∞∞∞∞∞∞∞∞∞∞Page 247
Feb 01/04R CES
(1) If the circuit breaker (2GG) stays closed:
- connect the units one by one until the circuit breaker (2GG) trips again.
- replace the related unit: for the BSCU (10GG) (Ref. AMM TASK 32-42-34-000-001) and (Ref. AMM TASK 32-42-34-400-001) for the pressure transducer (12GG) (Ref. AMM TASK 32-42-21-000-001) and (Ref. AMM TASK 32-42-21-400-001) for the pressure transducer (13GG) (Ref. AMM TASK 32-42-21-000-001) and (Ref. AMM TASK 32-42-21-400-001) for the relay (25GG) (Ref. ASM 32-42/01) for the switch (5GG) (Ref. ASM 32-42/01) for the board (1LP) (Ref. AMM TASK 33-14-33-000-001) and (Ref. AMM TASK 33-14-33-400-001)
- connect all the units.
(2) If the circuit breaker (2GG) trips again:
- do a check for a short to ground at the wiring between the circuit breaker (2GG) and the six units (Ref. ASM 32-42/01) and (Ref. ASM 32-42/03).
(a) If there is a short to ground:
- repair the related wiring.
(b) If there is no short to ground:
- replace the C/B-HYD/BRK & STRG/SYS 1/IND & SPLY (2GG) (Ref. ASM 32-42/01).
E. After the subsequent flight, make sure that the fault does not continue.
「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 ∞∞32-42-00∞∞∞∞∞∞∞∞∞∞Page 248
Feb 01/04R
CES TASK 32-42-00-810-829
Loss of the 28VDC Supply of the BSCU SYS 2
1. Possible Causes
_______________
- BSCU (10GG)
- PRESS XDCR-NORM BRK WHEEL 1 (11GG)
- PRESS XDCR-NORM BRK WHEEL 4 (14GG)
- wiring from the BSCU (10GG) pin AB/15A to the ground terminal
- SW-A/SKID & NW STRG (5GG)
- wiring from the BSCU (10GG) to the switch (5GG)
- wiring from the switch (5GG) pin 1C to the circuit breaker (4GG)
- C/B - HYD/BRK & STRG/SYS 2/SPLY (4GG)
- RELAY-WHEEL 3 SPEED (24GG)
- wiring between the circuit breaker (4GG) and the five units
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 32-42-21-000-001 Removal of the Normal-Brake Pressure Transducer AMM 32-42-21-400-001 Installation of the Normal-Brake Pressure Transducer AMM 32-42-34-000-001 Removal of the Braking/Steering Control Unit (BSCU)
(10GG) AMM 32-42-34-400-001 Installation of the Braking/Steering Control Unit
(BSCU) (10GG)
AMM 32-46-00-740-001 BITE Test of the BSCU
ASM 32-42/01
ASM 32-42/03
3. Fault Confirmation
__________________
A. Test
(1) Not applicable
4. Fault Isolation
_______________
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本文链接地址：A320 Trouble Shooting Manual 排故手册 起落架 LANDING GEAR 1(112)
