- replace the P/BSW - A/THR INST DISC, F/O (7CA2).
(a) If the fault continues:
- do a check and repair the wiring of the F/O A/THR instinctive disconnect pushbutton switch (7CA2) from pin A/4 to the ground and from pin A/5 to the first terminal block (Ref. ASM 22-31/01).
(4) If the test does not give the message and if the A/THR pushbutton switch remains on on the FCU when you push the two A/THR instinctive disconnect pushbutton switches:
- replace the RELAY - A/THR1 INST DISC (5CA1).
(a) If the fault continues:
- do a check of the wiring of the relay (5CA1) from pin A/X to the first terminal block and from pin A/Z to the diode module (1803VD) pin A/22 (Ref. ASM 22-31/01).
1 If there is no continuity:
_ - repair the above wiring.
2 If there is continuity:
_ - replace the diode module (1803VD).
a If the fault continues:
_
- do a check and repair the wiring of the diode module (1803VD) from pin A/7 to the first terminal block (Ref. ASM 22-31/01).
B. If the A/THR disengagement does not operate with the circuit breaker 10CA1 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 2.
(1) If the test gives the maintenance message AFS: FMGC2/ATHR DISC CKT:
- do the procedure (Ref. TASK 22-83-00-810-828).
「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 216
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/1 to the ground and from pin A/2 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:
- replace the P/BSW - A/THR INST DISC, F/O (7CA2).
(a) If the fault continues:
- do a check and repair the wiring of the F/O A/THR instinctive disconnect pushbutton switch (7CA2) from pin A/1 to the ground and from pin A/2 to the first terminal block (Ref. ASM 22-31/01).
(4) If the test does not give the message and if the A/THR pushbutton switch remains on on the FCU when you push the two A/THR instinctive disconnect pushbutton switches:
- replace the RELAY - A/THR2 INST DISC (5CA2).
(a) If the fault continues:
- do a check of the wiring of the relay (5CA2) from pin A/X to the first terminal block and from pin A/Z to the diode module (1803VD) pin A/23 (Ref. ASM 22-31/01).
1 If there is no continuity:
_ - repair the above wiring.
2 If there is continuity:
_ - replace the diode module (1803VD).
a If the fault continues:
_
- do a check and repair the wiring of the diode module (1803VD) from pin A/8 to the first terminal block (Ref. ASM 22-31/01).
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 ∞∞22-31-00∞∞∞∞∞∞∞∞∞∞Page 217
Feb 01/98 CES Loss of the Reception of the FADEC 1 Bus by One FMGC
1. Possible Causes
_______________
- FMGC-1 (1CA1)
- FMGC-2 (1CA2)
- wirings of the FADEC OWN A and FADEC OWN B bus from the FMGC 1 (1CA1) to the first terminal block
- wirings of the FADEC OPP A and FADEC OPP B bus 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
ASM 22-86/01
3. Fault Confirmation
__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU ENGINE/1/FADEC A/AND EIU 1 2KS1 A04 121VU ENGINE/ENG1/FADEC B/AND EIU 1 4KS1 R41
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