- do a check of the status of the skin air-outlet valve (22HQ) on the lower ECAM display unit.
(1) If the valve symbol is green:
- do a check and repair the wiring between the AEVC (10HQ) and the skin air-outlet valve (22HQ) , pin AA/3A and pin A/A and/or pin AA/3B and pin A/C and/or pin AA/3C and pin A/E (Ref. ASM 21-26/02).
「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 ∞∞21-26-00∞∞∞∞∞∞∞∞∞∞Page 213
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(2) If the valve symbol is amber:
- do a check and repair the wiring between the AEVC (10HQ) and the skin air-outlet valve (22HQ), pin AB/3A and pin A/J and/or pin AB/3B and pin A/M and/or pin AB/3C and pin A/R (Ref. ASM 21-26/02).
(3) If the fault continues:
- replace the VALVE-SKIN AIR OUTLET, AVNCS VENT (22HQ) (Ref. AMM TASK 21-26-53-000-001) and (Ref. AMM TASK 21-26-53-400-001).
(a) If the fault continues:
- replace the AEVC (10HQ) (Ref. AMM TASK 21-26-34-000-001) and (Ref. AMM TASK 21-26-34-400-001).
R **ON A/C 001-049, 101-149, 151-199, 201-299,
R Post SB 21-1087 For A/C 001-049,101-105,
A. If the test gives the maintenance message SKIN AIR OUTLET V 22HQ:
- make sure that the avionics ventilation filter is not clogged. If necessary, replace the CARTRIDGE-AVNCS VENT FILTER (2082HM) (Ref. AMM TASK 21-26-43-920-001).
- do a check of the status of the skin air-outlet valve (22HQ) on the lower ECAM display unit.
(1) If the valve symbol is green:
- do a check and repair the wiring between the AEVC (10HQ) and the skin air-outlet valve (22HQ), pin AA/3A and pin A/A and/or pin AA/3B and pin A/C and/or pin AA/3C and pin A/E (Ref. ASM 21-26/02).
(2) If the valve symbol is amber:
- do a check and repair the wiring between the AEVC (10HQ) and the skin air-outlet valve (22HQ), pin AB/3A and pin A/J and/or pin AB/3B and pin A/M and/or pin AB/3C and pin A/R (Ref. ASM 21-26/02).
(3) If the fault continues:
- replace the VALVE-SKIN AIR OUTLET, AVNCS VENT (22HQ) (Ref. AMM TASK 21-26-53-000-001) and (Ref. AMM TASK 21-26-53-400-001).
(a) If the fault continues:
- replace the AEVC (10HQ) (Ref. AMM TASK 21-26-34-000-001) and (Ref. AMM TASK 21-26-34-400-001).
**ON A/C ALL
B. Do the operational 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 ∞∞21-26-00∞∞∞∞∞∞∞∞∞∞Page 214
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TASK 21-26-00-810-805
Failure of the Conditioned Air-Inlet Valve
1. Possible Causes
_______________
- AEVC (10HQ)
- CARTRIDGE-AVNCS VENT FILTER (2082HM)
- VALVE-COND AIR INLET, AVNCS VENT (21HQ)
- wiring between the AEVC (10HQ) and the conditioned air-inlet valve (21HQ)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 21-26-00-710-001 Operational Check of System via MCDU AMM 21-26-34-000-001 Removal of the Avionics Equipment Ventilation Computer (AEVC) (10HQ) AMM 21-26-34-400-001 Installation of the Avionics Equipment Ventilation
Computer (AEVC) (10HQ) AMM 21-26-43-920-001 Replacement of the Filter Cartridge AMM 21-26-54-000-001 Removal of the Conditioned Air Inlet Valve (21HQ) AMM 21-26-54-400-001 Installation of the Conditioned Air Inlet Valve
(21HQ)
ASM 21-26/03
3. Fault Confirmation
__________________
A. Test
(1) Do the operational test of the avionics equipment ventilation from the Multipurpose Control and Display Unit (MCDU) (Ref. AMM TASK 21-26-00-710-001).
4. Fault Isolation
_______________
R **ON A/C 001-049, 051-099, 101-105, 301-399, 401-499,
A. If the test gives the maintenance message COND AIR INLET V 21HQ:
- make sure that the avionics ventilation filter is not clogged. If necessary, replace it.
- do a check of the status of the conditioned air-inlet valve (21HQ) microswitches, between pin A/J and pin A/G and between pin A/M and pin A/K (Ref. ASM 21-26/03).
「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 ∞∞21-26-00∞∞∞∞∞∞∞∞∞∞Page 215
Aug 01/05 CES
