BITE Test of the Vacuum Toilet System

TASK 38-31-00-740-001-A
BITE Test of the Vacuum Toilet System

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 31-32-00-860-001-A	Procedure to Get Access to the SYSTEM REPORT/TEST Menu Page

3. Job Set-up
Subtask 38-31-00-860-071-A

A. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
(2) Energize the Central Fault Display System (CFDS) (Ref. AMM TASK 31-32-00-860-001).

Subtask 38-31-00-865-119-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-VACUUM-SYS	35MG	A06
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-VACUUM-GEN	33MG	A08
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-E	34MG	A04
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-D	39MG	A03
** ON A/C ALL
2001VU	VACU TOIL SYS-LAV PWR-A	32MG	A01
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-VACU-SYS	35MG	A06
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-VACU-GEN	33MG	A08
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-G	34MG	A04
2001VU	VACU TOIL SYS-LAV PWR-F	39MG	A03
2001VU	VACU TOIL SYS-LAV PWR-D	45MG	A02
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-L	45MG	A02
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-L	23MG	A05
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-M	34MG	A04

4. Procedure
Subtask 38-31-00-740-050-D ** ON A/C NOT FOR ALL

A. Do this test.

ACTION	RESULT
1.On the MCDU: push the MCDU MENU mode key.	On the MCDU: the MCDU MENU page comes on.
push the <CFDS line key.	the CFDS MENU page comes on.
push the <SYSTEM REPORT / TEST line key.	the SYSTEM REPORT / TEST page comes on. NOTE: You may have to push the NEXT PAGE line key to get the correct SYSTEM REPORT / TEST.
2.On the MCDU: push the NEXT PAGE line key.	The MCDU shows: SYSTEM REPORT / TEST <RETURN
push the <TOILET line key.	The MCDU shows: SYSTEM-NAME <LAST LEG REPORT <PREVIOUS LEGS REPORT <LRU IDENTIFICATION <TROUBLE SHOOTING DATA <CLASS 3 FAULTS <RETURN NOTE: If an arrow is on the first line next to SYSTEM-NAME, push the NEXT PAGE line key to get more information.
3.On the MCDU: push the <LAST LEG REPORT line key.	The MCDU shows: SYSTEM-NAME LAST LEG REPORT DATE: UTC ATA <RETURN PRINT> NOTE: The DATE:, UTC and the ATA reference data come in view if there is a fault in the system.
4.On the MCDU: push the <RETURN line key.	The MCDU shows: SYSTEM-NAME <LAST LEG REPORT <PREVIOUS LEGS REPORT <LRU IDENTIFICATION <TROUBLE SHOOTING DATA <CLASS 3 FAULTS <RETURN
5.On the MCDU: push the <PREVIOUS LEGS REPORT line key.	The MCDU shows: SYSTEM-NAME PREVIOUS LEGS REPORT LEG DATE UTC ATA A/C-IDENT <RETURN PRINT> NOTE: The A/C-IDENT, LEG, DATE and the ATA reference data come in view if there is a fault in the system.
6.On the MCDU: push the <RETURN line key.	The MCDU shows: SYSTEM-NAME <LAST LEG REPORT <PREVIOUS LEGS REPORT <LRU IDENTIFICATION <TROUBLE SHOOTING DATA <CLASS 3 FAULTS <RETURN
7.On the MCDU: push the <LRU IDENTIFICATION line key.	The MCDU shows: SYSTEM-NAME LRU IDENTIFICATION <RETURN PRINT>
8.On the MCDU: push the <RETURN line key 2x.	On the MCDU: the MCDU MENU goes back to the CFDS MENU.
push the MCDU MENU mode key.	the MCDU MENU page comes on.

Subtask 38-31-00-740-050-E ** ON A/C NOT FOR ALL

A. Do this test.

ACTION	RESULT
1.On the MCDU: push the MCDU MENU mode key.	On the MCDU: the MCDU MENU page comes on.
push the <CFDS line key.	the CFDS MENU page comes on.
push the <SYSTEM REPORT / TEST line key.	the SYSTEM REPORT / TEST page comes on. NOTE: You may have to push the NEXT PAGE line key to get the correct SYSTEM REPORT / TEST.
2.On the MCDU: push the NEXT PAGE line key.	The MCDU shows: SYSTEM REPORT / TEST <RETURN-------------PRINT>
push the TOILET> line key.	The MCDU shows: SYSTEM-NAME LAST LEG <REPORT PREVIOUS LEGS <REPORT <LRU IDENT TROUBLE SHOOT------ GROUND <DATA------------- REPORT> <RETURN------------STATUS> NOTE: If an arrow is on the first line next to SYSTEM-NAME, push the NEXT PAGE line key to get more information.
3.On the MCDU: push the <LAST LEG REPORT line key.	The MCDU shows: SYSTEM-NAME LAST LEG REPORT DATE: GMT ATA <RETURN------------ PRINT* NOTE: The DATE:, UTC and the ATA reference data come in view if there is a fault in the system.
4.On the MCDU: push the <RETURN line key.	The MCDU shows: SYSTEM-NAME LAST LEG <REPORT PREVIOUS LEGS <REPORT <LRU IDENT TROUBLE SHOOT------ GROUND <DATA------------- REPORT> <RETURN------------STATUS>
5.On the MCDU: push the <PREVIOUS LEGS REPORT line key.	The MCDU shows: SYSTEM-NAME PREVIOUS LEGS REPORT LEG DATE UTC ATA A/C-IDENT <RETURN------------ PRINT* NOTE: The A/C-IDENT, LEG, DATE and the ATA reference data come in view if there is a fault in the system.
6.On the MCDU: push the <RETURN line key.	The MCDU shows: SYSTEM-NAME LAST LEG <REPORT PREVIOUS LEGS <REPORT <LRU IDENT TROUBLE SHOOT------ GROUND <DATA------------- REPORT> <RETURN------------STATUS>
7.On the MCDU: push the <LRU IDENTIFICATION line key.	The MCDU shows: SYSTEM-NAME LRU IDENTIFICATION (DIR IDENTIFICATION) <RETURN ------------PRINT*
8.On the MCDU: push the <RETURN line key 2x.	On the MCDU: the MCDU MENU goes back to the CFDS MENU.
push the MCDU MENU mode key.	the MCDU MENU page comes on.

5. Close-up
Subtask 38-31-00-862-055-A

A. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.04.01 01:19:44 UTC