1. Possible Causes
_______________
 - DMC-1 (1WT1)

 - ADIRU-1 (1FP1)

 - DMC-2 (1WT2)

 - ADIRU-2 (1FP2)

 - wiring of the INERTIAL REFERENCE OUTPUT BUS 1 bus from the ADIRU1 (1FP1) to the DMC1 (1WT1)

 - wiring of the INERTIAL REFERENCE OUTPUT BUS 1 bus from the ADIRU2 (1FP2) to the DMC2 (1WT2)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 31-63-34-000-001 Removal of the DMC (1WT1,1WT2,1WT3)
 AMM 31-63-34-400-001 Installation of the DMC (1WT1,1WT2,1WT3)
 AMM 34-12-34-000-001 Removal of the ADIRU (1FP1, 1FP2, 1FP3)
 AMM 34-12-34-400-001 Installation of the ADIRU (1FP1, 1FP2, 1FP3)
 ASM 34-14/01

 3. Fault Confirmation
__________________
 A. Test
 (1) Not applicable, the fault is evident.
 4. Fault Isolation
_______________
 A. If the NAV HDG DISCREPANCY message comes into view on the upper ECAM DU:
 - make sure that the CHECK HDG message is in view on the CAPT ND or on the F/O ND.
 (1) If the CHECK HDG message is in view on the CAPT ND:
 - on the center pedestal, on the SWITCHING panel 8VU, set the EIS DMC selector switch to CAPT 3.
 (a) If the messages go out of view:
 - replace the DMC-1 (1WT1) (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001).
 「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 ∞∞34-14-00∞∞∞∞∞∞∞∞∞∞Page A217
 May 01/05R
 CES  a If there is no continuity:

 1_ If the fault continues:
 - do a check of the wiring of the INERTIAL REFERENCE OUTPUT
 BUS 1 bus from the ADIRU1 (1FP1) to the DMC1 (1WT1) (Ref.
 ASM 34-14/01).

_ - repair the above wiring.
 b If there is continuity:
_
 - replace the ADIRU-1 (1FP1) (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
 (b) If the messages stay in view:
 - replace the ADIRU-1 (1FP1) (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
 (2) If the CHECK HDG message is in view on the F/O ND:
 - on the center pedestal, on the SWITCHING panel 8VU, set the EIS DMC selector switch to F/O 3.
 (a) If the messages go out of view:
 - replace the DMC-2 (1WT2) (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001).
 1 If the fault continues:
_
 - do a check of the wiring of the INERTIAL REFERENCE OUTPUT BUS 1 bus from the ADIRU2 (1FP2) to the DMC2 (1WT2) (Ref. ASM 34-14/01).
 a If there is no continuity:
_ - repair the above wiring.
 b If there is continuity:
_
 - replace the ADIRU-2 (1FP2) (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
 (b) If the messages stay in view:
 - replace the ADIRU-2 (1FP2) (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
 5. Close-up
________
 A. Put the aircraft back to its initial configuration.
 (1) On the center pedestal, on the SWITCHING panel 8VU, set the EIS DMC selector switch to NORM.
 「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 ∞∞34-14-00∞∞∞∞∞∞∞∞∞∞Page A218
 May 01/05R
 CES  ADIRS CDU Inoperative

 1. Possible Causes
_______________
 - CDU-ADIRS (2FP)

 - ADIRU-1 (1FP1)

 - ADIRU-2 (1FP2)

 - ADIRU-3 (1FP3)

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 34-12-12-000-001 Removal of the ADIRS CDU (2FP)
 AMM 34-12-12-400-001 Installation of the ADIRS CDU (2FP)
 AMM 34-12-34-000-001 Removal of the ADIRU (1FP1, 1FP2, 1FP3)
 AMM 34-12-34-400-001 Installation of the ADIRU (1FP1, 1FP2, 1FP3)
 AMM 34-14-00-740-001 Interface Test of the IR
 ASM 34-11/01

 3. Fault Confirmation
__________________
 A. Test
 (1) Do the Interface test of the IR (Ref. AMM TASK 34-14-00-740-001).
　
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