(2WT1,2WT2,3WT1,3WT2,4WT1,4WT2)
 AMM 31-63-22-400-001 Installation of the Display Unit
 (2WT1,2WT2,3WT1,3WT2,4WT1,4WT2)
 ASM 31-68/00

 3. Fault Confirmation
__________________
 A. Test
 Do the EIS system test (Ref. AMM TASK 31-60-00-740-004).

 4. Fault Isolation
_______________
 A. If the test gives the maintenance message DU EWD(4WT1)/ECP(6WT):
 - replace the DU-ECAM, UPPER (4WT1), (Ref. AMM TASK 31-63-22-000-001) and (Ref. AMM TASK 31-63-22-400-001)
 (1) If the fault continues:

 - replace the CTL PNL-ECAM (6WT), (Ref. AMM TASK 31-61-12-000-001) and (Ref. AMM TASK 31-61-12-400-001)

 (2) If the fault continues:

 - remove the EWD DU (4WT1) and the ECAM CTL PNL (6WT) (Ref. AMM TASK 31-63-22-000-001)

 - check the wiring between the connector AA of the EWD DU (4WT1) and the connector B of the ECAM CTL PNL (6WT) (Ref. ASM 31-68/00).

 - install the EWD DU and the ECAM CTL PNL (Ref. AMM TASK 31-63-22-400-001)

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 401-499, ∞∞31-63-00∞∞∞∞∞∞∞∞∞∞Page C214
 Aug 01/05 CES

 5. Close-up
________
 A. Do the test given in Para. 3.A.

 Loss of the Brightness Control on the SD DU
 1. Possible Causes
_______________
 - DU-ECAM, LOWER (4WT2)

 - CTL PNL-ECAM (6WT)

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-60-00-740-004 EIS System Test
 AMM 31-61-12-000-001 Removal of the ECAM Control Panel (6WT)
 AMM 31-61-12-400-001 Installation of the ECAM Control Panel (6WT)
 AMM 31-63-22-000-001 Removal of the Display Unit

 (2WT1,2WT2,3WT1,3WT2,4WT1,4WT2)
 AMM 31-63-22-400-001 Installation of the Display Unit
 (2WT1,2WT2,3WT1,3WT2,4WT1,4WT2)
 ASM 31-68/00

 3. Fault Confirmation
__________________
 A. Test
 Do the EIS system test (Ref. AMM TASK 31-60-00-740-004).

 4. Fault Isolation
_______________
 A. If the test gives the maintenance message DU SD(4WT2)/ECP(6WT):
 - replace the DU-ECAM, LOWER (4WT2), (Ref. AMM TASK 31-63-22-000-001) and (Ref. AMM TASK 31-63-22-400-001)
 (1) If the fault continues:

 - replace the CTL PNL-ECAM (6WT), (Ref. AMM TASK 31-61-12-000-001) and (Ref. AMM TASK 31-61-12-400-001)

 (2) If the fault continues:

 - remove the SD DU (4WT2) and the ECAM CTL PNL (6WT) (Ref. AMM TASK 31-63-22-000-001)

 - check the wiring between the connector AA of the SD DU (4WT2) and the connector A of the ECAM CTL PNL (6WT) (Ref. ASM 31-68/00).

 - install the SD DU and the ECAM CTL PNL (Ref. AMM TASK 31-63-22-400-001)

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 401-499, ∞∞31-63-00∞∞∞∞∞∞∞∞∞∞Page C216
 Aug 01/05 CES 5. Close-up

________
 A. Do the test given in Para. 3.A.

 Failure of the Cooling System of the CAPT PFD DU
 1. Possible Causes
_______________
 - avionics ventilation system
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 21-26-00-710-001 Operational Check of System via MCDU
 AMM 31-60-00-740-004 EIS System Test

 3. Fault Confirmation
__________________
 A. Test
 Do the EIS system test (Ref. AMM TASK 31-60-00-740-004).

 4. Fault Isolation
_______________
 A. If the test gives the maintenance message DU PFD CAPT(2WT1)/COOLING:
 - do the operational test of the avionics equipment ventilation (Ref. AMM TASK 21-26-00-710-001)
 (1) If the avionics ventilation system does not operate correctly:

 - do the related trouble shooting (Ref. TSM chapter 21)

 (2) If the avionics ventilation system operates correctly:

 - do a visual check of the cooling air inlet and outlet of the CAPT PFD DU
　
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