4. Fault Isolation
_______________
 A. Do the bite test (Ref. AMM TASK 38-31-00-740-001).
 B. If the FAP gives the maintenance message SYSTEM INOP:
 - Refer to the LAST LEG REPORT or PREVIOUS LEGS REPORT page of the bite test. (Ref. Fig. 201/TASK 38-31-00-991-001)

 - Refer to the TROUBLE SHOOTING DATA page of the bite test.

 (1) If there is NO FAULTS indication on the trouble shooting data page:

 - Operate the flush switches to flush the toilets.

 (2) If the toilets do not flush:
 - open and close the circuit breaker 33MG.

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞38-31-00∞∞∞∞∞∞∞∞∞∞Page 246
 201-299, May 01/05 CES (3) If the fault continues:

 - remove and clean the Liquid Level Transmitter (LLT) REFERENCE LINE, (Ref. AMM TASK 38-31-00-100-009).

 - replace the XMTR-LEVEL PHASE OFF (40MG), (Ref. AMM TASK 38-31-62-000-001) and (Ref. AMM TASK 38-31-62-400-001).

 C. 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.

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞38-31-00∞∞∞∞∞∞∞∞∞∞Page 247
 201-299, May 01/05 CES

R **ON A/C 106-149, 301-399, 401-499,

 TASK 38-31-00-810-834
 Vacuum Toilet Assy Failure
 1. Possible Causes
_______________
 - WATER VALVE

 - FLUSH VALVE

 - FLUSH CONTROL UNIT

 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
 AMM 38-31-12-000-001 Removal of the Flush Control Unit
 AMM 38-31-12-400-001 Installation of the Flush Control Unit
 AMM 38-31-55-000-001 Removal of the Water Valve
 AMM 38-31-55-400-001 Installation of the Water Valve
 AMM 38-31-57-000-001 Removal of the Flush Valve
 AMM 38-31-57-400-001 Installation of the Flush Valve
 38-31-00-991-001-A Fig. 201A

 3. Fault Confirmation
__________________
 A. Do a test of the vacuum toilet system (Ref. AMM TASK 38-31-00-710-009).
 B. Do the procedure to get access to the CFDS SYSTEM REPORT/TEST menu PAGE (Ref. AMM TASK 38-31-00-740-001).
 4. Fault Isolation
_______________
 (Ref. Fig. 201A/TASK 38-31-00-991-001-A)

 A. If the test gives a different maintenance message, you can find the related trouble shooting procedure in the applicable Page Block 101.
 (1) If the LAST/PREVIOUS LEGS Report gives the maintenance message TOILET ASSY LAV X:
 (a) go to the TROUBLE SHOOTING DATA page.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 106-149, 301-399, 401-499, ∞∞38-31-00∞∞∞∞∞∞∞∞∞∞Page 248
 Aug 01/05 CES

 (2) If the TROUBLE SHOOTING DATA page gives the maintenance message WATER VALVE:
 - replace the WATER VALVE, (Ref. AMM TASK 38-31-55-000-001) and (Ref. AMM TASK 38-31-55-400-001).
 B. If the TROUBLE SHOOTING DATA page gives the maintenance message FLUSH VALVE MOTOR:
 - replace the FLUSH VALVE, (Ref. AMM TASK 38-31-57-000-001) and (Ref. AMM TASK 38-31-57-400-001).
 C. If the TROUBLE SHOOTING DATA page gives the maintenance message FLUSH VALVE OPEN LIMIT SWITCH:
 - replace the FLUSH VALVE, (Ref. AMM TASK 38-31-57-000-001) and (Ref. AMM TASK 38-31-57-400-001).
 D. If the TROUBLE SHOOTING DATA page gives the maintenance message FLUSH VALVE CLOSED LIMIT SWITCH:
 - replace the FLUSH VALVE, (Ref. AMM TASK 38-31-57-000-001) and (Ref. AMM TASK 38-31-57-400-001).
 E. If the TROUBLE SHOOTING DATA page gives the maintenance message FCU:
 - replace the FLUSH CONTROL UNIT, (Ref. AMM TASK 38-31-12-000-001) and (Ref. AMM TASK 38-31-12-400-001).
 F. Test
 (1) Do the test as given in paragraph 3. A. to check the correct
 operation.
　
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