TASK 21-31-00-810-824
Outflow Valve does not operate in the Manual Mode
1. Possible Causes
_______________
- MANUAL MOTOR
- OUTFLOW VALVE (10HL)
- MODE SEL pushbutton switch (14HL)
- MAN V/S CTL switch (5HL)
- wiring
- CIRCUIT BREAKER (3HL)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R AMM 21-31-00-710-003 Operational Test of Manual Mode Selection and Manual R Mode Pressure Control and Functional Test of Manual R Mode Cabin Altitude/Outflow Valve Position Indication
AMM 21-31-51-000-001 Removal of the Outflow Valve 10HL (From Inside) AMM 21-31-51-000-004 Removal of the Outflow Valve (10HL) - Manual Motor
10HL-5 AMM 21-31-51-000-006 Removal of the Outflow Valve 10HL (From Outside) AMM 21-31-51-400-001 Installation of the Outflow Valve 10HL (From Inside) AMM 21-31-51-400-004 Installation of the Outflow Valve (10HL) - Manual
Motor 10HL-5 AMM 21-31-51-400-006 Installation of the Outflow Valve 10HL (From Outside) ASM 21-31/01
3. Fault Confirmation
__________________
A. Do the operational test of the manual pressure control and monitoring (Ref. AMM TASK 21-31-00-710-003).
4. Fault Isolation
_______________
A. If the outflow valve does not operate during the manual mode:
- do a check for 28VDC at the outflow valve (10HL) between the pin C/A and C/B with the MAN V/S CTL switch (5HL) in the full UP and in the full DN position.
(1) If the voltage is correct:
- replace the MANUAL MOTOR (Ref. AMM TASK 21-31-51-000-004) and (Ref. AMM TASK 21-31-51-400-004).
(a) If the fault continues:
- replace the OUTFLOW VALVE (10HL) (Ref. AMM TASK 21-31-51-000-001) and (Ref. AMM TASK 21-31-51-400-001) or (Ref. AMM TASK 21-31-51-000-006) and (Ref. AMM TASK 21-31-51-400-006).
(2) If the voltage is not correct:
- do a check for 28VDC at the circuit breaker 3HL.
(a) If the voltage is correct:
- replace the MODE SEL pushbutton switch (14HL).
(b) If the voltage is not correct:
1_ If the fault continues:
- replace the MAN V/S CTL switch (5HL).
2_ If the fault continues:
- do a check and repair the wiring between:
.the circuit breaker (3HL) and the OUTFLOW VALVE (10HL)
C/A,B via the MODE SEL pushbutton switch (14HL) and the MAN
V/S CTL switch (5HL),
.the OUTFLOW VALVE (10HL) C/B to the GND via the MAN V/S CTL
switch (5HL),
(Ref. ASM 21-31/01).
- replace the CIRCUIT BREAKER (3HL).
B. Do the test given in para. 3.
「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 253
Aug 01/02R
CES
TASK 21-31-00-810-825
MODE SEL Pushbutton Switch FAULT Legend on
1. Possible Causes
_______________
- BOARD-ANN LT TEST & INTFC (7LP)
- CONTROLLER-CABIN PRESSURE 1 (11HL)
- CONTROLLER-CABIN PRESSURE 2 (12HL)
- RELAY-AUTO MODE 1 FAULT (18HL)
- RELAY-AUTO MODE 2 FAULT (19HL)
- BOARD-ANN LT TEST & INTFC (40LP)
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 21-31-34-000-001 Removal of the Cabin Pressure Controller (11HL,12HL) AMM 21-31-34-400-001 Installation of the Cabin Pressure Controller
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