- replace the VALVE-ISOLATION, AFT CARGO COMPT (34HN) (referred to as VALVE (34HN)) (Ref. AMM TASK 21-28-52-000-001) and (Ref. AMM TASK 21-28-52-400-001).
(2) If the fault continues:
- replace the CONT-CARGO VENTILATION (10HN) (Ref. AMM TASK 21-28-34-000-001) and (Ref. AMM TASK 21-28-34-400-001).
(3) If the fault continues:
- do a check and repair the wiring between: VALVE (34HN) connector A/E and VC (10HN) connector B/<C, VALVE (34HN) connector A/B and VC (10HN) connector B/<D, VALVE (34HN) connector A/A and VC (10HN) connector B/<F, VALVE (34HN) connector A/D and VC (10HN) connector B/<E, VALVE (34HN) connector A/F and GND, VALVE (34HN) connector A/C and GND (Ref. ASM 21-28/02).
C. If the two isolation valves (33HN) and (34HN) do not operate but the FAULT legend on the pushbutton switch AFT ISOL VALVE, which is installed on the panel 22VU, does not come on:
- do a check for a ground signal at the VC (10HN) connector B/H (Ref. ASM 21-28/02).
(1) If there is a ground signal:
- do a check of the PUSHBUTTON SWITCH-CARGO SMOKE/TEST (13WH) and replace it if necessary (Ref. ASM 21-28/02).
(a) If the fault continues:
- do a check and repair the wiring if necessary between: VC (10HN) connector B/H and SW (13WH) connector A/11, SW (13WH) connector A12 and GND (Ref. ASM 21-28/02).
(2) If the fault continues:
- do a check for a ground signal at the VC (10HN) connector B/K (Ref. ASM 21-28/02).
(a) If there is a ground signal:
- do the operational test of the lavatory smoke-detection sytem (Ref. AMM TASK 26-17-00-710-001).
(b) If the fault continues:
- do a check and repair the wiring if necessary between: VC (10HN) connector B/K and SDCU (10WQ) connector A/3C, SDCU (10WQ) connector A/3D and GND (Ref. ASM 21-28/02).
(3) If the fault continues:
- do a check for a ground signal at the VC (10HN) connector B/T (Ref. ASM 21-28/02).
(a) If there is a ground signal:
- do a check of the PUSHBUTTON SWITCH-CARGO VENT/AFT ISOL VALVE (36HN) and replace it if necessary (Ref. ASM 21-28/02).
(b) If the fault continues:
- do a check and repair the wiring if necessary between: VC (10HN) connector B/T and SW (36HN) connector A/A2, SW (36HN) connector A/A3 and GND (Ref. ASM 21-28/02).
(4) If the fault continues:
R
R 1_ If the test gives a different maintenance message, refer to
R the Fault Symptom List.
- replace the CONT-CARGO VENTILATION (10HN) (Ref. AMM TASK 21-28-34-000-001) and (Ref. AMM TASK 21-28-34-400-001).
「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 ∞∞21-28-00∞∞∞∞∞∞∞∞∞∞Page 203
Feb 01/05 CES (5) If the fault continues:
- do a check and repair the wiring between:
- VC (10HN) connector B/L and CB (31HN),
- VC (10HN) connector B/M and GND,
- VC (10HN) connector B/N and GND,
- VC (10HN) connector B/Z and GND (Ref. ASM 21-28/02).
D. If the two isolation valves (33HN) and (34HN) operate but the FAULT legend on the pushbutton switch AFT ISOL VALVE, which is installed on the panel 22VU, comes on:
- do the bite test of the landing gear (Ref. AMM TASK 32-69-00-740-001). R
R (1) If the test gives a different maintenance message, refer to the Fault R Symptom List.
(2) If the fault continues:
- do a check of the BOARD-ANN LT TEST & INTFC (8LP) and replace it if necessary (Ref. ASM 21-28/02).
(3) If the fault continues:
- replace the CONT-CARGO VENTILATION (10HN) (Ref. AMM TASK 21-28-34-000-001) and (Ref. AMM TASK 21-28-34-400-001).
(4) If the fault continues:
- do a check and repair the wiring between: VC (10HN) connector B/S and RELAY (8LP) connector A/14, RELAY (8LP) connector A/15 and CB (31HN), RELAY (8LP) connector A/13 and SW (36HN) connector A/7, RELAY (8LP) connector A/41 and GND (Ref. ASM 21-28/02).
E. Do the test as given in the Para. 3.A.
5. Close-up
________
A. Put the aircraft back to its initial configuration.
R TASK 21-28-00-810-803
R FWD Cargo-Compartment Fan Fault
R 1. Possible Causes_______________
R - CONT-ZONE TEMPERATURE (8HK)
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本文链接地址：A320 Trouble Shooting Manual 排故手册 AIR CONDITIONING 空调1(88)
