TASK 32-51-00-810-804
F/O Nosewheel-Steering Handwheel Inoperative
1. Possible Causes
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- XMTR UNIT-N/W STRG HANDWHEEL,F/O (2GC)
- BSCU (10GG)
- wiring from the BSCU (10GG) to the handwheel transmitter unit (2GC)
2. Job Set-up Information
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A. Referenced Information
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REFERENCE DESIGNATION
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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 AMM 32-51-11-000-001 Removal of the Transmitter Unit - Nose Wheel Steering
Handwheel (1GC,2GC) AMM 32-51-11-400-001 Installation of the Transmitter Unit - Nose Wheel Steering Handwheel (1GC,2GC) ASM 32-51/01
3. Fault Confirmation
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A. Test
(1) Do the BITE test of the BSCU (Ref. AMM TASK 32-46-00-740-001).
(2) Read the TROUBLE SHOOTING DATA of the BSCU on the MCDU (Ref. 32-42-00, P. Block 301).
4. Fault Isolation
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R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-220, 301-399,
A. If the test gives the maintenance message FO STEERING HANDWHEEL and if the TROUBLE SHOOTING DATA gives the fault code 49:
- replace the XMTR UNIT-N/W STRG HANDWHEEL,F/O (2GC) (Ref. AMM TASK 32-51-11-000-001) and (Ref. AMM TASK 32-51-11-400-001).
(1) If the fault continues:
- replace the BSCU (10GG) (Ref. AMM TASK 32-42-34-000-001) and (Ref. AMM TASK 32-42-34-400-001).
「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 ∞∞32-51-00∞∞∞∞∞∞∞∞∞∞Page 208
May 01/05 CES (2) If the fault continues:
- if the source of the message is BSCU 1, do a check and repair the wiring from the BSCU (10GG) to the handwheel transmitter unit (2GC) pins AA/9K, 15K, 13K to pins A/P, D, R. (Ref. ASM 32-51/01).
- If the source of the message is BSCU 2, do a check and repair the wiring from the BSCU (10GG) to the handwheel transmitter unit (2GC) pins AA/9A, 15A, 13A to pins A/U, B, V. (Ref. ASM 32-51/01)
B. If the test gives the maintenance message FO STEERING HANDWHEEL and if the TROUBLE SHOOTING DATA gives the fault code 4B:
- replace the XMTR UNIT-N/W STRG HANDWHEEL,F/O (2GC) (Ref. AMM TASK 32-51-11-000-001) and (Ref. AMM TASK 32-51-11-400-001).
(1) If the fault continues:
- replace the BSCU (10GG) (Ref. AMM TASK 32-42-34-000-001) and (Ref. AMM TASK 32-42-34-400-001).
(2) If the fault continues:
- if the source of the message is BSCU 1, do a check and repair the wiring from the BSCU (10GG) to the handwheel transmitter unit (2GC) pins AA/10K, 1J, 14K to pins A/M, E, N. (Ref. ASM 32-51/01).
- if the source of the message is BSCU 2, do a check and repair the wiring from the BSCU (10GG) to the handwheel transmitter unit (2GC) pins AA/10A, 1B, 14A to pins A/S, C, T. (Ref. ASM 32-51/01)
R **ON A/C 106-149, 221-299, 401-499,
A. If the test gives the maintenance message FO STEERING HANDWHEEL and if the TROUBLE SHOOTING DATA gives the fault code 791:
- replace the XMTR UNIT-N/W STRG HANDWHEEL,F/O (2GC) (Ref. AMM TASK 32-51-11-000-001) and (Ref. AMM TASK 32-51-11-400-001).
(1) If the fault continues:
- replace the BSCU (10GG) (Ref. AMM TASK 32-42-34-000-001) and (Ref. AMM TASK 32-42-34-400-001).
(2) If the fault continues:
- if the source of the message is BSCU 1, do a check and repair the wiring from the BSCU (10GG) to the handwheel transmitter unit (2GC) pins AA/9K, 15K, 13K to pins A/P, D, R. (Ref. ASM 32-51/01). 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 起落架 LANDING GEAR 2(98)
