- replace the SDAC-2 (1WV2) (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).
 B. Do the test given in Para. 3.

 Failure of the SDAC1
 1. Possible Causes
_______________
 - SDAC-1 (1WV1)
 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)

 3. Fault Confirmation

__________________
 A. Do the ground scanning of the central warning system (Ref. AMM TASK 31-50-00-710-001).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance messages
 FWC1: NO DATA FROM SDAC1 and FWC2: NO DATA FROM SDAC1.

 - replace the SDAC-1 (1WV1) (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).
 B. Do the test given in Para. 3.

R **ON A/C 106-149, 229-299, 303-399, 401-499,
 TASK 31-54-00-810-946
 Loss of the GCU1 Bus of the SDAC1
 1. Possible Causes
_______________
 - SDAC-1 (1WV1)

 - GCU-1 (1XU1)

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 24-22-34-000-001 Removal of the GCU-1(2) (1XU1, 1XU2)
 AMM 24-22-34-400-001 Installation of the GCU-1(2) (1XU1, 1XU2)
 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)

 3. Fault Confirmation
__________________
 A. Do the ground scanning of the central warning system (Ref. AMM TASK 31-50-00-710-001).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message:
 SDAC1: NO DATA FROM GCU1

 (1) Replace the SDAC-1 (1WV1) (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).

 (2) If the fault continues:

 - replace the GCU-1 (1XU1) (Ref. AMM TASK 24-22-34-000-001) and (Ref. AMM TASK 24-22-34-400-001).

 (3) If the fault continues:

 - do a check and repair the wiring between the GCU1 (1XU1) and the SDAC1 (1WV1).
 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 : 106-149, 229-299, 303-399, 401-499, ∞∞31-54-00∞∞∞∞∞∞∞∞∞∞Page A269
 Aug 01/05 CES Loss of the GCU1 Bus of the SDAC2

 1. Possible Causes
_______________
 - SDAC-2 (1WV2)

 - GCU-1 (1XU1)

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 24-22-34-000-001 Removal of the GCU-1(2) (1XU1, 1XU2)
 AMM 24-22-34-400-001 Installation of the GCU-1(2) (1XU1, 1XU2)
 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)

 3. Fault Confirmation
__________________
 A. Do the ground scanning of the central warning system (Ref. AMM TASK 31-50-00-710-001).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message:
 SDAC2: NO DATA FROM GCU1

 (1) Replace the SDAC-2 (1WV2) (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).

 (2) If the fault continues:

 - replace the GCU-1 (1XU1) (Ref. AMM TASK 24-22-34-000-001) and (Ref. AMM TASK 24-22-34-400-001).

 (3) If the fault continues:

 - do a check and repair the wiring between the GCU1 (1XU1) and the SDAC2 (1WV2).
 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 : 106-149, 229-299, 303-399, 401-499, ∞∞31-54-00∞∞∞∞∞∞∞∞∞∞Page A270
　
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