(2WT1,2WT2,3WT1,3WT2,4WT1,4WT2)
 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)
 ASM 31-61/04

 3. Fault Confirmation
__________________
 A. Test
 Do the EIS input test (Ref. AMM TASK 31-60-00-740-002).

 4. Fault Isolation
_______________
 A. If the test gives the maintenance message: DMC1: ENG1 N2 DSPLY ERR - on the ECAM control panel, set the UPPER DISPLAY potentiometer to OFF
 and do the test given in Para. 3.
 (1) If this test gives the maintenance message:
 DMC1: ENG1 N2 DSPLY ERR

 - replace the DMC-1 (1WT1) (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001).
 (a) If the fault continues:
 - do a check of the wiring from DMC1 (1WT1) pins AB/11B, 11C to the first terminal block (Ref. ASM 31-61/04).
 1 If there is no continuity:
_ - repair the wiring.

 「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 ∞∞31-63-81∞∞∞∞∞∞∞∞∞∞Page 226
 Feb 01/98 CES (2) If this test gives no maintenance message:

 2_ If there is continuity:
 - do a check and repair the wiring from DMC1 (1WT1) pins
 AB/11D, 11E to the first terminal block (Ref. ASM 31-61/04).

 - replace the DU-ECAM, UPPER (4WT1) (Ref. AMM TASK 31-63-22-000-001) and (Ref. AMM TASK 31-63-22-400-001).
 (a) If the fault continues:
 - do a check of the wiring from upper ECAM DU (4WT1) pins AA/35, 36 to the first terminal block (Ref. ASM 31-61/04).
 1 If there is no continuity:
_ - repair the wiring.

 2 If there is continuity:
_

 - do a check and repair the wiring from upper ECAM DU (4WT1) pins AA/38, 39 to the first terminal block (Ref. ASM 31-61/04).
 B. Do the test given in Para. 3.

 Loss of the ENG2 N2 Indication on the Upper ECAM DU Detected by the DMC1
 1. Possible Causes
_______________
 - DMC-1 (1WT1)

 - DU-ECAM, UPPER (4WT1)

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-60-00-740-002 EIS Input Test
 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)
 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)
 ASM 31-61/04

 3. Fault Confirmation
__________________
 A. Test
 Do the EIS input test (Ref. AMM TASK 31-60-00-740-002).

 4. Fault Isolation
_______________
 A. If the test gives the maintenance message DMC1 : ENG2 N2 DSPLY ERR:
 - on the ECAM control panel, set the UPPER DISPLAY potentiometer to OFF and do the test given in Para. 3.
 (1) If this test gives the maintenance message DMC1 : ENG2 N2 DSPLY ERR:
 - replace the DMC-1 (1WT1) (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001).
 (a) If the fault continues:
 - do a check of the wiring from DMC1 (1WT1) pins AB/11B, 11C to the first terminal block (Ref. ASM 31-61/04).
 1 If there is no continuity:
_ - repair the wiring.

 2 If there is continuity:
_

 - do a check and repair the wiring from DMC1 (1WT1) pins AB/11D, 11E to the first terminal block (Ref. ASM 31-61/04).
 「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 ∞∞31-63-81∞∞∞∞∞∞∞∞∞∞Page 228
 Feb 01/98 CES (2) If this test gives no maintenance message:

 - replace the DU-ECAM, UPPER (4WT1) (Ref. AMM TASK 31-63-22-000-001) and (Ref. AMM TASK 31-63-22-400-001).
 (a) If the fault continues:
 - do a check of the wiring from upper ECAM DU (4WT1) pins AA/35, 36 to the first terminal block (Ref. ASM 31-61/04).
 1_ If there is no continuity:
 - repair the wiring.
 2_ If there is continuity:
 - do a check and repair the wiring from upper ECAM DU (4WT1)
 pins AA/38, 39 to the first terminal block (Ref. ASM 31-
　
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