Loss of the input bus 1 by the ECAM control panel

TASK 31-61-00-810-808-A
Loss of the input bus 1 by the ECAM control panel

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 31-50-00-710-001	Ground Scanning of the Central Warning System
ASM 316103
AMM 31-61-12-000-001	Removal of the ECAM Control Panel
AMM 31-61-12-400-001	Installation of the ECAM Control Panel

3. Fault Confirmation
Subtask 31-61-00-865-050-A

A. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	EIS/ECAM/CTL/PNL	15WT	E12
49VU	EIS/DMC1/SPLY	10WT1	E11
49VU	EIS/DMC1/SWTG	21WT1	E09
49VU	EIS/DMC3/SWTG	21WT3	E07
121VU	EIS/DMC3/SPLY	10WT3	Q09

Subtask 31-61-00-710-058-A

B. Test
Do the operational test of the central warning systems (FWC) AMM 31-50-00-710-001.

4. Fault Isolation
Subtask 31-61-00-810-057-B

A. If the test gives the maintenance message ECP : NO DATA FROM DMC1 or 3:

(1) If the fault continues:

do a check and repair the wiring from ECAM control panel (6WT) pins B/G,H to the first terminal block ASM 316103.

Subtask 31-61-00-710-059-A

B. Do the test given in Para. 3.B.

[Rev.8 from Aug 2018] 2026.04.04 04:30:36 UTC