1. Possible Causes
_______________
- FMGC-2 (1CA2)
- FCU (2CA)
- wiring of the A/THR 2 SW COM and A/THR 2 SW MON discretes (from the FCU (2CA) to the FMGC 2 (1CA2))
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 22-81-12-000-001 Removal of the FCU (2CA)
AMM 22-81-12-400-001 Installation of the FCU (2CA)
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 22-96-00-710-001 Operational Test of the AFS
ASM 22-31/01
3. Fault Confirmation
__________________
A. Test
(1) On the FCU, push the A/THR pushbutton switch.
(2) Do the operational test of the AFS (Ref. AMM TASK 22-96-00-710-001) and read the result for the FMGC 2.
4. Fault Isolation
_______________
A. If the test gives the maintenance message AFS : FMGC2/FCU (ATHR SW):
- 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:
- replace the FCU (2CA) (Ref. AMM TASK 22-81-12-000-001) and (Ref. AMM TASK 22-81-12-400-001).
(2) If the fault continues:
- do a check and repair the wiring of the A/THR 2 SW COM and A/THR 2 SW MON discretes (from the FCU (2CA) to the FMGC 2 (1CA2)) (Ref. ASM 22-31/01).
B. 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 ∞∞22-31-00∞∞∞∞∞∞∞∞∞∞Page 214
Feb 01/98 CES A/THR Instinctive Disconnect Pushbutton Switch Inoperative
1. Possible Causes
_______________
- P/BSW - A/THR INST DISC, CAPT (7CA1)
- wiring of the CAPT A/THR instinctive disconnect pushbutton switch (7CA1)
- P/BSW - A/THR INST DISC, F/O (7CA2)
- wiring of the F/O A/THR instinctive disconnect pushbutton switch (7CA2)
- RELAY - A/THR1 INST DISC (5CA1)
- wiring of the relay (5CA1)
- diode module (1803VD)
- wiring of the diode module (1803VD)
- RELAY - A/THR2 INST DISC (5CA2)
- wiring of the relay (5CA2)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
22-83-00-810-827 Loss of the Reception of the ATH INST DISC Discretes by the FMGC 1 22-83-00-810-828 Loss of the Reception of the ATH INST DISC Discretes by the FMGC 2 AMM 22-30-00-710-003 Operational Test of the Engine / Autothrust System
Isolation (with AIDS)
AMM 22-96-00-710-001 Operational Test of the AFS
ASM 22-31/01
3. Fault Confirmation
__________________
A. Test
(1) Do the operational test of the engine/autothrust system isolation (Ref. AMM TASK 22-30-00-710-003).
4. Fault Isolation
_______________
A. If the A/THR disengagement does not operate with the circuit breaker 10CA2 open:
- do the operational test of the AFS (Ref. AMM TASK 22-96-00-710-001) with one A/THR instinctive disconnect pushbutton switch pushed and read the result for the FMGC 1.
(1) If the test gives the maintenance message AFS: FMGC1/ATHR DISC CKT:
- do the procedure (Ref. TASK 22-83-00-810-827).
「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 ∞∞22-31-00∞∞∞∞∞∞∞∞∞∞Page 215
Feb 01/98 CES
(2) If the test does not give the message and if the A/THR pushbutton switch remains on on the FCU when you push the CAPT A/THR instinctive disconnect pushbutton switch only:
- replace the P/BSW - A/THR INST DISC, CAPT (7CA1).
(a) If the fault continues:
- do a check and repair the wiring of the CAPT A/THR instinctive disconnect pushbutton switch (7CA1) from pin A/4 to the ground and from pin A/5 to the first terminal block (Ref. ASM 22-31/01).
(3) If the test does not give the message and if the A/THR pushbutton switch remains on on the FCU when you push the F/O A/THR instinctive disconnect pushbutton switch only: 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1(81)
