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4. Fault Isolation _______________ A. If the test gives the maintenance message DMC3 : PROGRAM PIN or DMC3 : POSITION PIN: R - do a check for ground signals at DMC3 (1WT3) connector AB (Ref. AWM 31-R 61-30). (1) If the wiring is incorrect:
- repair the wiring.
(2) If the wiring is correct:
- replace the DMC-3 (1WT3) (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001). B. Do the test given in Para. 3.
Failure of One of the 6 DUs Detected by the DMC3 1. Possible Causes _______________ - PFD-CAPT (2WT1)
- DU-ECAM, UPPER (4WT1)
- DU-ECAM, LOWER (4WT2)
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. With the EIS DMC selector switch (18WT) on the SWITCHING panel (8VU) at CAPT/3. (1) If the test gives the maintenance message DMC3 : RECONF WIRING and there is no CAPT PFD image: - replace the PFD-CAPT (2WT1) (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 the CAPT PFD (2WT1) to the DMC1 (1WT1): . pins AA/21, 22 to pins AB/10B, 10C . pins AA/23, 24 to pins AB/10D, 10E (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 214 Feb 01/98 CES 1 If there is no continuity:
_ - repair the wiring.
2 If there is continuity: _
- do a check and repair the wiring from the DMC1 (1WT1) to the DMC3 (1WT3): . pins AB/10F, 10G to pins AB/9D, 9E . pins AB/10H, 10J to pins AB/9B, 9C (Ref. ASM 31-61/04). a If the fault continues: _
- replace the DMC-3 (1WT3) (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001). (2) If the test gives the maintenance message DMC3 : RECONF WIRING and there is no CAPT ND image: - replace the ND-CAPT (3WT1) (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 the CAPT ND (3WT1) to the DMC1 (1WT1): . pins AA/21, 22 to pins AB/9B, 9C . pins AA/23,24 to pins AB/9D, 9E (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 the DMC1 (1WT1) to the DMC3 (1WT3): . pins AB/9H, 9J to pins AB/10B, 10C . pins AB/9F, 9G to pins AB/10D, 10E (Ref. ASM 31-61/04). a If the fault continues: _
- replace the DMC-3 (1WT3) (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001). (3) If the test gives the maintenance message DMC3 : RECONF WIRING and there is no upper ECAM DU image: - 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 the upper ECAM DU (4WT1) to the DMC1 (1WT1): . pins AA/35, 36 to pins AB/11B, 11C . pins AA/38, 39 to pins AB/11D, 11E (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 215 Feb 01/98 CES 2 If there is continuity:
- do a check and repair the wiring from the DMC1 (1WT1) to the DMC3 (1WT3): . pins AB/11F, 11G to pins AB/11D, 11E . pins AB/11H, 11J to pins AB/11B, 11C (Ref. ASM 31-61/04). a If the fault continues: _ www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 指示和记录系统 3
