3. Fault Confirmation
__________________
A. Do the operational test of the pressure control and monitoring system (Ref. AMM TASK 21-31-00-710-002).
4. Fault Isolation
_______________
R
R A. If the FAULT legend in the pushbutton switch CABIN PRESS/MODE SEL/AUTO, which is installed on the panel 25VU, is on.
- do a check of the BOARD-ANN LT TEST & INTFC (7LP) and replace it if necessary (Ref. ASM 21-31/01).
(1) If the fault continues:
- do a check of the BOARD-ANN LT TEST & INTFC (40LP) and replace it if necessary (Ref. ASM 21-31/01).
(2) If the fault continues:
- replace the CONTROLLER-CABIN PRESSURE 1 (11HL) and CONTROLLER-CABIN PRESSURE 2 (12HL) (Ref. AMM TASK 21-31-34-000-001) and (Ref. AMM TASK 21-31-34-400-001).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞21-31-00∞∞∞∞∞∞∞∞∞∞Page 254
Feb 01/05 CES (3) If the fault continues:
- replace the RELAY-AUTO MODE 1 FAULT (18HL) and RELAY-AUTO MODE 2 FAULT (19HL). (Ref. ASM 21-31/01).
R B. Do the test given in para. 3.
TASK 21-31-00-810-826
Outflow Valve Feedback Assembly Fault (CPC 2)
1. Possible Causes
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- VALVE-OUTFLOW (10HL)
- VALVE-OUTFLOW (10HL), FEEDBACK ASSEMBLY
- VALVE-OUTFLOW (10HL), ELECTRONIC MODULE 2
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 21-31-00-710-002 Operational Test of the Pressure Control and
Monitoring AMM 21-31-51-000-001 Removal of the Outflow Valve 10HL (From Inside) AMM 21-31-51-000-002 Removal of the Outflow Valve (10HL) - Electronics
Module 10HL-1 (10HL-2)
AMM 21-31-51-000-005 Removal of the Outflow Valve (10HL) - Feedback
Assembly 10HL-6 AMM 21-31-51-400-001 Installation of the Outflow Valve 10HL (From Inside) AMM 21-31-51-400-002 Installation of the Outflow Valve (10HL) -
Electronics Module 10HL-1 (10HL-2) AMM 21-31-51-400-005 Installation of the Outflow Valve (10HL) - Feedback
Assembly 10HL-6
ASM 21-31/01
ASM 21-31/03
3. Fault Confirmation
__________________
A. Test
(1) Do the operational test of the pressure control and monitoring system (Ref. AMM TASK 21-31-00-710-002).
NOTE : Before you do the fault isolation procedure you must make a
____
note of:
- the part number of the OFV installed in the aircraft.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞21-31-00∞∞∞∞∞∞∞∞∞∞Page 256
Aug 01/02R CES
4. Fault Isolation
_______________
A. Test Results
NOTE : This procedure is only applicable for:
____
- Outflow Valve Part Numbers 9023-15703-81 and previous.
(1) If one or both of the reports, LAST LEG REPORT, PREVIOUS LEG REPORT and/or the test gives the maintenance message,
- OUTFL.V FEEDB ASSY 2 (78):
- replace the VALVE-OUTFLOW (10HL), FEEDBACK ASSEMBLY (referred to as OFV (10HL)) (Ref. AMM TASK 21-31-51-000-005) and (Ref. AMM TASK 21-31-51-400-005).
(2) If the fault continues:
- replace the VALVE-OUTFLOW (10HL), ELECTRONIC MODULE 2 (Ref. AMM TASK 21-31-51-000-002) and (Ref. AMM TASK 21-31-51-400-002).
NOTE : The electronic module 2 is connected to the electrical
____
connector 10HL-B.
(3) If the fault continues:
- do a check and repair the wiring between the: OFV connector (10HL-E) pins E, F, A, B and C and the OFV connector (10HL-B) pins E, F, A, B and C, OFV connector (10HL-E) pin H and GND (Ref. ASM 21-31/01).
B. Test Results
NOTE : This procedure is only applicable for:
____
- Outflow Valve Part Number 20790-01AA and onwards.
(1) If one or both of the reports, LAST LEG REPORT, PREVIOUS LEG REPORT and/or the test gives the maintenance message,
- OUTFL.V FEEDB ASSY 2 (78):
- replace the VALVE-OUTFLOW (10HL) (Ref. AMM TASK 21-31-51-000-001) and (Ref. AMM TASK 21-31-51-400-001).
(2) If the fault continues:
- do a check and repair the wiring between the: OFV connector (10HL-D) pins A, B, C, D and E and the OFV connector (10HL-A) pins A, B, C, E and F, OFV connector (10HL-D) pin J and GND (Ref. ASM 21-31/01) and (Ref. ASM 21-31/03).
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