Loss of the Reception of the BSCU 1 VALID Discretes by one FMGC
1. Possible Causes
_______________
- FMGC-1 (1CA1)
- BSCU (10GG)
- FMGC-2 (1CA2)
- wiring of the BSCU OWN VALID COM and BSCU OWN VALID MON discretes (from the FMGC 1 (1CA1) to the BSCU (10GG))
- wiring of the BSCU OPP VALID COM and BSCU OPP VALID MON discretes (from the FMGC 2 (1CA2) to the first terminal block)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 22-83-34-000-001 Removal of the FMGC (1CA1,1CA2)
AMM 22-83-34-400-001 Installation of the FMGC (1CA1,1CA2)
AMM 22-91-00-710-001 Ground Scanning of the AFS
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) ASM 22-85/04
3. Fault Confirmation
__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY 4GG M36 121VU HYDRAULIC/BRAKING AND STEERING/SYS2/CTL 3GG M35 121VU HYDRAULIC/BRAKING AND STEERING/SYS1/CTL 1GG M34 121VU HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY 2GG M33
B. Test
NOTE : If the fault message AFS: BSCU1 is shown on the post flight report
____ after in-flight or on ground reset of the anti skid and nose wheel steering system with the A/SKID & NOSE WHEEL control switch (5 GG):
- no action is necessary.
(1) Open the circuit breakers 3GG and 4GG.
「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 ∞∞22-83-00∞∞∞∞∞∞∞∞∞∞Page 275
Aug 01/05R CES
(2) Do the Ground Scanning of the AFS (Ref. AMM TASK 22-91-00-710-001).
(3) Close the circuit breakers 3GG and 4GG.
4. Fault Isolation
_______________
A. If the test gives the maintenance message AFS: BSCU1 (ISSUED BY: FG1):
- replace the FMGC-1 (1CA1) (Ref. AMM TASK 22-83-34-000-001) and (Ref. AMM TASK 22-83-34-400-001).
(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:
- do a check and repair the wiring of the BSCU OWN VALID COM and BSCU OWN VALID MON discretes (from the FMGC 1 (1CA1) to the BSCU (10GG)) (Ref. ASM 22-85/04).
B. If the test gives the maintenance message AFS: BSCU1 (ISSUED BY: FG2):
- replace the FMGC-2 (1CA2) (Ref. AMM TASK 22-83-34-000-001) and (Ref. AMM TASK 22-83-34-400-001).
(1) If the fault continues:
- do a check and repair the wiring of the BSCU OPP VALID COM and BSCU OPP VALID MON discretes (from the FMGC 2 (1CA2) to the first terminal block) (Ref. ASM 22-85/04).
C. Do the test given in Para. 3.
「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 ∞∞22-83-00∞∞∞∞∞∞∞∞∞∞Page 276
Aug 01/05R
CES Loss of the Reception of the BSCU 2 VALID Discretes by one FMGC
1. Possible Causes
_______________
- FMGC-1 (1CA1)
- BSCU (10GG)
- FMGC-2 (1CA2)
- wiring of the BSCU OPP VALID COM and BSCU OPP VALID MON discretes (from the FMGC 1 (1CA1) to the BSCU (10GG))
- wiring of the BSCU OWN VALID COM and BSCU OWN VALID MON discretes (from the FMGC 2 (1CA2) to the first terminal block)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 22-83-34-000-001 Removal of the FMGC (1CA1,1CA2)
AMM 22-83-34-400-001 Installation of the FMGC (1CA1,1CA2)
AMM 22-91-00-710-001 Ground Scanning of the AFS
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) ASM 22-85/04 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 AUTO FLIGHT 自动飞行2(85)
