R **ON A/C 106-149, 221-299, 401-499,
A. Test
(1) Do the BITE test of the Normal Braking System. (Ref. AMM TASK 32-46-00-740-005)
(2) Read the TROUBLE SHOOTING DATA of the BSCU on the MCDU. (Ref. TSM 32-42-00 P.Block 301)
**ON A/C ALL
4. Fault Isolation
_______________
**ON A/C 001-049, 051-099, 101-105, 151-199, 201-220, 301-399,
A. If the test gives the maintenance message BRK NORM SERVOVALVE 18GG and the TROUBLE SHOOTING DATA gives the fault code 21:
- replace the SERVOVALVE-NORM BRK, WHEEL 4 (18GG), (Ref. AMM TASK 32-42-48-000-001) and (Ref. AMM TASK 32-42-48-400-001).
(1) If the fault continues:
- replace the PRESS XDCR-NORM BRK WHEEL 4 (14GG) (Ref. AMM TASK 32-42-21-000-001) and (Ref. AMM TASK 32-42-21-400-001).
B. If the test gives the maintenance message BRK NORM SERVOVALVE 18GG and the TROUBLE SHOOTING DATA gives the fault code 1D:
- do a continuity /resistance test at the servovalve.The resistance must be between 90 and 100 ohms.
(1) If the test is not OK:
- replace the SERVOVALVE-NORM BRK, WHEEL 4 (18GG) (Ref. AMM TASK 32-42-48-000-001) (Ref. AMM TASK 32-42-48-400-001)
(2) If the test is OK:
- replace the BSCU (10GG). (Ref. AMM TASK 32-42-34-000-001) (Ref. AMM TASK 32-42-34-400-001)
(a) 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 wheel 4 norm brake servovalve (18GG) pins AB/12K, 12J to pins A/C, A. (Ref. ASM 32-42/02)
- if the source of the message is BSCU 2, do a check and repair the wiring from the BSCU (10GG) to the wheel 4 norm brake servovalve (18GG) pins AB/12A, 12B to pins A/F, E. (Ref. ASM 32-42/02)
「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 219
Aug 01/05 CESR **ON A/C 106-149, 221-299, 401-499,
A. If the test gives the maintenance message BRK NORM SERVOVLV4 (18GG) and the TROUBLE SHOOTING DATA gives one of these fault codes: 28 or 36 or 88.
- replace the SERVOVALVE-NORM BRK, WHEEL 4 (18GG), (Ref. AMM TASK 32-42-48-000-001) and (Ref. AMM TASK 32-42-48-400-001).
(1) If the fault continues:
- replace the PRESS XDCR-NORM BRK WHEEL 4 (14GG) (Ref. AMM TASK 32-42-21-000-001) and (Ref. AMM TASK 32-42-21-400-001).
B. If the test gives the maintenance message BRK NORM SERVOVLV4 (18GG) and the TROUBLE SHOOTING DATA gives one of these fault codes: 44 or 52 or 513 or 523.
- do a continuity /resistance test at the servovalve.The resistance must be between 90 and 100 ohms.
(1) If the test is not OK:
- replace the SERVOVALVE-NORM BRK, WHEEL 4 (18GG) (Ref. AMM TASK 32-42-48-000-001) (Ref. AMM TASK 32-42-48-400-001)
(2) If the test is OK:
- replace the BSCU (10GG). (Ref. AMM TASK 32-42-34-000-001) (Ref. AMM TASK 32-42-34-400-001)
(a) 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 wheel 4 norm brake servovalve (18GG) pins AB/12K, 12J to pins A/C, A. (Ref. ASM 32-42/02)
- if the source of the message is BSCU 2, do a check and repair the wiring from the BSCU (10GG) to the wheel 4 norm brake servovalve (18GG) pins AB/12A, 12B to pins A/F, E. (Ref. ASM 32-42/02)
**ON A/C ALL
C. Do the test given in Para. 3.A.
TASK 32-42-00-810-813
Electrical Failure of the Selector Valve
1. Possible Causes
_______________
- BSCU (10GG)
- wiring from the selector valve (23GG) to the BSCU (10GG)
- wiring from the selector valve (23GG) pin A/B to the ground
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 32-42-00-710-001 Operational Check of the Normal Braking System 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 32-46-00-740-002 BITE Test of the BSCU - Ground Scanning
AMM 32-46-00-740-005 BITE Test of the Normal Braking System
ASM 32-42/01
3. Fault Confirmation
__________________
**ON A/C 001-049, 051-099, 101-105, 151-199, 201-220, 301-399,
A. Test
(1) Do the operatinal test of the normal braking system (Ref. AMM TASK 32-42-00-710-001)
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