Loss of CAPT PFD or CAPT ND or Upper ECAM DU Image

TASK 31-63-81-810-817-A
Loss of CAPT PFD or CAPT ND or Upper ECAM DU Image

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 31-60-00-740-002	Perform Electronic Instrument System (EIS) Input Test
ASM 316104
AMM 31-63-22-000-001	Removal of the Display Unit
AMM 31-63-22-400-001	Installation of the Display Unit
AMM 31-63-34-000-001	Removal of the DMC
AMM 31-63-34-400-001	Installation of the DMC

3. Fault Confirmation
Subtask 31-63-81-740-082-A ** ON A/C NOT FOR ALL

A. Test
Do the EIS input test AMM 31-60-00-740-002.

4. Fault Isolation
Subtask 31-63-81-810-069-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message DMC1 : RECONF WIRING and there is no CAPT PFD image:

(1) If the fault continues:

do a check of the wiring from CAPT PFD (2WT1) pins AA/35, 36 to DMC1 (1WT1) pins AB/9B, 9C ASM 316104.

(a) If there is no continuity:

(b) If there is continuity:

do a check and repair the wiring from CAPT PFD (2WT1) pins AA/38, 39 to DMC1 (1WT1) pins AB/9D, 9E ASM 316104.

1 If the fault continues:

Subtask 31-63-81-810-070-A ** ON A/C NOT FOR ALL

B. If the test gives the maintenance message DMC1 : RECONF WIRING and there is no CAPT ND image:

(1) If the fault continues:

do a check of the wiring from CAPT ND (3WT1) pins AA/35, 36 to DMC1 (1WT1) pins AB/10B, 10C ASM 316104.

(a) If there is no continuity:

(b) If there is continuity:

do a check and repair the wiring from CAPT ND (3WT1) pins AA/38, 39 to DMC1 (1WT1) pins AB/10D, 10E ASM 316104.

1 If the fault continues:

Subtask 31-63-81-810-071-A ** ON A/C NOT FOR ALL

C. If the test gives the maintenance message DMC1 : RECONF WIRING and there is no upper ECAM DU image:

(1) If the fault continues:

do a check of the wiring from upper ECAM DU (4WT1) pins AA/35, 36 to DMC1 (1WT1) pins AB/11B, 11C ASM 316104.

(a) If there is no continuity:

(b) If there is continuity:

do a check and repair the wiring from upper ECAM DU (4WT1) pins AA/38, 39 to DMC1 (1WT1) pins AB/10D, 10E ASM 316104.

1 If the fault continues:

Subtask 31-63-81-740-083-A ** ON A/C NOT FOR ALL

D. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:30:54 UTC