(a) go to the TROUBLE SHOOTING DATA page.

 (2) If the TROUBLE SHOOTING DATA page gives the maintenance message LIQD LVL XMTR OUTPUT VALUE AT FAILURE ENTRY (MILLIAMP). LIQD LVL SNSR OUTPUT VALUE AT FAILURE ENTRY (VOLT):

 - clean the LLT reference line, (Ref. AMM TASK 38-31-00-100-009).
 (a) If the fault continues:

 - replace the SENSOR-LEVEL (41MG), (Ref. AMM TASK 38-31-63-000-001) and (Ref. AMM TASK 38-31-63-400-001).

 (b) If the fault continues:

 - replace the DECODER/ENCODER UNIT B (300RH7), (Ref. AMM TASK 23-73-47-000-001) and (Ref. AMM TASK 23-73-47-400-001).

 (c) If the fault continues:

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

 (d) If the fault continues:

 - replace the DEU-B (300RH8), (Ref. AMM TASK 23-73-47-000-001) and (Ref. AMM TASK 23-73-47-400-001).

 (e) If the fault continues:

 - do a check and repair the aircraft wiring, (Ref. ASM 38-31/01).
 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.

 TASK 38-31-00-810-843

 Waste Service Panel-Door Switch or Wire 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 AMM 38-31-13-000-001 Removal of the Waste Service-Panel Door Limit-Switch
 (44MG)
 AMM 38-31-13-400-001 Installation of the Waste Service-Panel Door

 Limit-Switch (44MG)
 ASM 38-31/01
 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 WASTE SVCE PNL DR SW (44MG):
 - replace the SW-SVCE PNL (44MG), (Ref. AMM TASK 38-31-13-000-001) and (Ref. AMM TASK 38-31-13-400-001).
 (a) If the fault continues:
 - do a check of the aircraft wiring of the waste service-panel door-switch for continuity between:

 - pin A and C when the door is open,

 - pin B and C when the switch 44MG is pushed and hold, do the repair as necessary (Ref. ASM 38-31/01).

 「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 265
 Aug 01/05 CES

 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.

 TASK 38-31-00-810-844

 Liquid Level Transmitter and Liquid Level Sensor failure
 1. Possible Causes
_______________
 - XMTR-LEVEL PHASE OFF (40MG)

 - SENSOR-LEVEL (41MG)

 - DECODER/ENCODER UNIT B (300RH7)

 - DEU-B (300RH8)

 - LLT reference line

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 23-73-47-000-001 Removal of the Decoder/Encoder Units (DEU) B 300RH AMM 23-73-47-400-001 Installation of the Decoder/Encoder Unit (DEU) B 300RH AMM 38-31-00-100-009 Cleaning of the Liquid Level Transmitter (LLT)
 Reference Line 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 38-31-62-000-001 Removal of the Liquid Level Transmitter (40MG) AMM 38-31-62-400-001 Installation of the Liquid Level Transmitter (40MG) AMM 38-31-63-000-001 Removal of the Liquid Level Sensor (41MG) AMM 38-31-63-400-001 Installation of the Liquid Level Sensor (41MG) 38-31-00-991-001-A Fig. 201A
　
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