NOTE : This is to make sure that the messages are not incorrect. An
____ incorrect message can occur if there is a mismatch between the LLT and the CIDS system.
(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):
- clean the sense line, (Ref. AMM TASK 38-31-00-100-009).
(a) If the fault continues:
- replace the XMTR-LEVEL (40MG), (Ref. AMM TASK 38-31-62-000-001) and (Ref. AMM TASK 38-31-62-400-001).
(b) If the fault continues:
- do a check and repair the aircraft wiring, (Ref. ASM 38-31/01).
(c) If the fault continues:
- replace the DECODER/ENCODER UNIT B (300RH7).
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 38-31-00-810-838
Liquid Level Sensor (LLS) Failure
1. Possible Causes
_______________
- SENSOR-LEVEL (41MG)
- DECODER/ENCODER UNIT B (300RH7)
- aircraft wiring
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 38-31-00-710-009 Operational Test of the Toilet Unit
AMM 38-31-00-740-001 BITE Test of the Vacuum Toilet System
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)
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 LIQD LVL SNSR (41MG) and The FAP gives the maintenance message MAINTENANCE REQUIRED - WASTE WATER:
- replace the SENSOR-LEVEL (41MG), (Ref. AMM TASK 38-31-63-000-001) and (Ref. AMM TASK 38-31-63-400-001).
(a) If the fault continues:
- do a check and repair the aircraft wiring, (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 256
Aug 01/05 CES (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).
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 38-31-00-810-839
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