B. Do the BITE test of the BSCU with the BSCU channel that is the source of the fault message (Ref. AMM TASK 32-46-00-740-001).
- do a check of the status of the circuit breaker (4GG)
C. If the circuit breaker (4GG) is closed:
- do a check for 28VDC at pin AB/14A of the BSCU (10GG) (Ref. ASM 32-42/01).
(1) If there is 28VDC:
- 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/15A 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/15A 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/14A to pin 2C (Ref. ASM 32-42/01)
- do a check and repair the wiring from the switch (5GG) pin 1C to the circuit breaker (4GG) (Ref. ASM 32-42/01).
2 If the fault continues:
_
- replace the C/B - HYD/BRK & STRG/SYS 2/SPLY (4GG) (Ref. ASM 32-42/01).
D. If the circuit breaker is open:
- disconnect these five units:
BSCU (10GG)
PRESS XDCR-NORM BRK WHEEL 1 (11GG)
PRESS XDCR-NORM BRK WHEEL 4 (14GG)
RELAY-WHEEL 3 SPEED (24GG)
SW-A/SKID & NW STRG (5GG)
- close the circuit breaker (4GG).
(1) If the circuit breaker (4GG) stays closed:
- connect the units one by one until the circuit breaker (4GG) 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 (11GG) (Ref. AMM TASK 32-42-21-000-001) and (Ref. AMM TASK 32-42-21-400-001) for the pressure transducer (14GG) (Ref. AMM TASK 32-42-21-000-001) and (Ref. AMM TASK 32-42-21-400-001)
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞32-42-00∞∞∞∞∞∞∞∞∞∞Page 250
Feb 01/04R CES
for the relay (24GG) (Ref. ASM 32-42/01)
for the switch (5GG) (Ref. ASM 32-42/01)
- connect all the units.
(2) If the circuit breaker (4GG) trips again:
- do a check for a short to ground at the wiring between the circuit breaker (4GG) and the five 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 2/SPLY (4GG) (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 251
Feb 01/04R
CES
TASK 32-42-00-810-830
Loss of the L Shock-Absorber Compressed Signal from the LGCIU 2 to the BSCU
1. Possible Causes
_______________
- LGCIU-2 (5GA2)
- BSCU (10GG)
- PROX SNSR-L L/G EXT, SYS 2 (23GA)
- wiring from the BSCU (10GG) to the LGCIU 2 (5GA2)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 32-31-71-000-001 Removal of the LGCIU (5GA1, 5GA2)
AMM 32-31-71-400-001 Installation of the LGCIU (5GA1, 5GA2)
AMM 32-31-73-000-001 Removal of the Proximity-Sensors 9GA(8GA),
11GA(10GA), 27GA(26GA), 29GA(28GA), 15GA(14GA), 17GA(16GA), 21GA(20GA), 23GA(22GA), 33GA(32GA), 35GA(34GA)
AMM 32-31-73-400-001 Installation of the Proximity-Sensors 9GA(8GA), 11GA(10GA), 27GA(26GA), 29GA(28GA), 15GA(14GA), 17GA(16GA), 21GA(20GA), 23GA(22GA), 33GA(32GA)...
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
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