Waste Service Panel-Door Switch or Wiring Failure

TASK 38-31-00-810-843-A
Waste Service Panel-Door Switch or Wiring Failure

1. Possible Causes

SW-SVCE PNL [44MG]
aircraft wiring

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 38-31-00-710-009	Operational Test of the Toilet Unit
AMM 38-31-00-740-001	BITE Test of the Vacuum Toilet System
ASM 383110
AMM 38-31-13-000-001	Removal of the Waste Service-Panel Door Limit-Switch
AMM 38-31-13-400-001	Installation of the Waste Service-Panel Door Limit-Switch
MCDU Display

3. Fault Confirmation
Subtask 38-31-00-710-133-A ** ON A/C NOT FOR ALL

A. Do a test of the vacuum toilet system AMM 38-31-00-710-009.

Subtask 38-31-00-740-078-A ** ON A/C NOT FOR ALL

B. Do the procedure to get access to the CFDS SYSTEM REPORT/TEST menu PAGE AMM 38-31-00-740-001.

4. Fault Isolation
Subtask 38-31-00-810-145-A ** ON A/C NOT FOR ALL

A. If the LAST/PREVIOUS LEGS Report gives the maintenance message
WASTE SVCE PNL DR SW (44MG):

replace the SW-SVCE PNL [44MG] , AMM 38-31-13-000-001 and AMM 38-31-13-400-001.

(1) If the fault continues:

do a check of the aircraft wiring of the waste service-panel door-switch for continuity between:

(a) pin A and C when the door is open,
(b) pin B and C when the switch 44MG is pushed and held.

do the repair as necessary ASM 383110.

Subtask 38-31-00-710-134-A ** ON A/C NOT FOR ALL

B. Test
(1) Do the test as given in paragraph 3. A. to check the correct operation.
(2) After the subsequent flight, make sure that the fault does not continue.

[Rev.8 from Aug 2018] 2026.04.04 04:34:15 UTC