3. Fault Confirmation
__________________
A. Test Do the operational test of the central warning systems (FWC) (Ref. AMM TASK 31-50-00-710-001).
4. Fault Isolation
_______________
A. If the test gives the maintenance message:
FWC1 : NO DATA FROM SDAC2
- replace the SDAC-2 (1WV2), (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).
(1) If the fault continues:
- do a check and repair the wiring from the SDAC 2 (1WV2) pins AB/9G, 9H to the first terminal block , (Ref. ASM 31-54/04).
B. Do the test given in Para. 3.
Loss of the ARINC 429 Bus 2 Output of the SDAC 2
1. Possible Causes
_______________
- SDAC-2 (1WV2)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 31-50-00-710-001 Ground Scanning of the Central Warning System AMM 31-53-34-000-001 Removal of the Flight Warning Computer (FWC) (1WW1,1WW2) R AMM 31-53-34-400-001 Installation of the Flight Warning Computer (FWC) (1WW1,1WW2) ASM 31-54/04
3. Fault Confirmation
__________________
A. Test Do the operational test of the central warning systems (FWC) (Ref. AMM TASK 31-50-00-710-001).
4. Fault Isolation
_______________
A. If the test gives the maintenance message:
FWC 2 : NO DATA FROM SDAC2
- replace the SDAC-2 (1WV2), (Ref. AMM TASK 31-53-34-000-001) and (Ref. AMM TASK 31-53-34-400-001).
(1) If the fault continues:
- do a check and repair the wiring from the SDAC 2 (1WV2) pins AE/9B, 9C to the first terminal block , (Ref. ASM 31-54/04).
B. Do the test given in Para. 3.
Failure of the SDAC 2
1. Possible Causes
_______________
- SDAC-2 (1WV2)
- wiring from the SDAC 2 (1WV2) pin AC/1 to the circuit breaker (2WV)
- C/B-EIS/SDAC2/SPLY (2WV)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-50-00-710-001 Ground Scanning of the Central Warning System
AMM 31-55-34-000-001 Removal of the SDAC (1WV1,1WV2)
AMM 31-55-34-400-001 Installation of the SDAC (1WV1,1WV2)
ASM 31-51/01
3. Fault Confirmation
__________________
A. Test Do the operational test of the central warning systems (FWC) (Ref. AMM TASK 31-50-00-710-001).
4. Fault Isolation
_______________
R A. Table of the circuit breakers used in this procedure:
R -------------------------------------------------------------------------------R PANEL DESIGNATION IDENT. LOCATION R -------------------------------------------------------------------------------R 121VU EIS/SDAC/2/SPLY 2WV Q06
R B. If the test gives the maintenance message: SDAC2
- do a check of the status of the circuit breaker (2WV).
(1) If the circuit breaker (2WV) is closed:
- replace the SDAC-2 (1WV2), (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).
(a) If the fault continues:
- do a check of the wiring from the SDAC 2 (1WV2) pin AC/1 to the circuit breaker (2WV), (Ref. ASM 31-51/01).
1 If there is no continuity:
_ - repair the wiring given above.
「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 ∞∞31-54-00∞∞∞∞∞∞∞∞∞∞Page 203
Nov 01/04 CES 2 If there is continuity:
_
- replace the C/B-EIS/SDAC2/SPLY (2WV).
(2) If the circuit breaker (2WV) is open:
- close the circuit breaker.
(a) If the circuit breaker is open again:
- replace the SDAC-2 (1WV2). 1 If the fault continues:
_
- do a check and repair for a short to ground the wiring between the circuit breaker (2WV) and the SDAC 2 (1WV2).
(b) If the circuit breaker stays closed and the fault continues:
- replace the SDAC-2 (1WV2). R C. Do the test given in Para. 3.
Loss of the ARINC 429 Bus 1 Output of the SDAC 1
1. Possible Causes
_______________
- SDAC-1 (1WV1)
- wiring
2. Job Set-up Information
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