3. Fault Confirmation
__________________
R **ON A/C 051-052,
A. Do the operational test of the cockpit and cabin temperature-control system with CFDS/MCDU (Ref. AMM TASK 21-63-00-710-004).
NOTE : If a fault is detected, the ZC gives a fault code for shop
____ maintenance in addition to the related CFDS message(s). For detailed information see the applicable Page Block 301.
R **ON A/C 106-149, 303-399,
R A. Do the operational test of the cockpit and cabin temperature-control R system with CFDS/MCDU (Ref. AMM TASK 21-63-00-710-004).
R **ON A/C 051-052, 106-149, 303-399,
4. Fault Isolation
_______________
R **ON A/C 051-052,
A. If the test confirms the fault:
- do a check that the resistance of the cockpit-duct temperature sensor (15HK) measured between connector A/E and A/F and connector A/C and A/D is in these limits (Ref. ASM 21-63/03):
Temp (Deg.C) OHMS ---------------------------
+ 10 18820 +/- 5 %
+ 18 13340 +/- 5 %
+ 25 10000 +/- 5 %
+ 30 8197 +/- 5 %
+ 40 5598 +/- 5 %
+ 50 3903 +/- 5 %
(1) If the resistance values are out of the specified limits:
- replace the SENSOR-DUCT TEMPERATURE,COCKPIT (15HK) (Ref. AMM TASK 21-63-15-000-001) and (Ref. AMM TASK 21-63-15-400-001).
(2) If the resistance values are in the specified limits:
- do a check and repair the wiring (Ref. ASM 21-63/03) from:
- the SENSOR-DUCT TEMPERATURE,COCKPIT (15HK) to the ZC (8HK) and,
- the SENSOR-DUCT TEMPERATURE,COCKPIT(15HK) to ground.
(3) If the fault continues:
- do a check that the resistance of the cockpit-duct overheat sensor (18HK) measured between connector A/A and A/B is in these limits (Ref. ASM 21-63/03):
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 051-052, 106-149, 303-399, ∞∞21-63-00∞∞∞∞∞∞∞∞∞∞Page 257
Aug 01/05 CES Temp (Deg.C) OHMS ---------------------------
+ 10 18820 +/- 5 %
+ 18 13340 +/- 5 %
+ 25 10000 +/- 5 %
+ 30 8197 +/- 5 %
+ 40 5598 +/- 5 %
+ 50 3903 +/- 5 %
(a) If the resistance values are out of the specified limits:
- replace the SENSOR-DUCT OVHT TEMPERATURE,COCKPIT (18HK) (Ref. AMM TASK 21-63-18-000-001) and (Ref. AMM TASK 21-63-18-400-001).
(b) If the resistance values are in the specified limits:
- do a check and repair the wiring (Ref. ASM 21-63/03) from:
- the SENSOR-DUCT OVHT TEMPERATURE,COCKPIT (18HK) to the ZC (8HK) and,
- the SENSOR-DUCT OVHT TEMPERATURE,COCKPIT (18HK) to ground.
(4) If the fault continues:
- replace the TRIM VALVE CKPT (11HK) (Ref. AMM TASK 21-63-51-000-001) and (Ref. AMM TASK 21-63-51-400-001).
(5) If the fault continues:
- do a check and repair the wiring (Ref. ASM 21-63/02) from:
- the TRIM VALVE CKPT (11HK) to the ZC (8HK) and,
- the TRIM VALVE CKPT (11HK) to ground.
(6) If the fault continues:
- replace the VALVE-PRESSURE REGULATING (14HK) (Ref. AMM TASK 21-63-52-000-001) and (Ref. AMM TASK 21-63-52-400-001).
(7) If the fault continues:
- do a check and repair the wiring (Ref. ASM 21-63/03) from:
- the VALVE-PRESSURE REGULATING (14HK) to the ZC (8HK) and,
- the VALVE-PRESSURE REGULATING (14HK) to ground.
(8) If the fault continues:
- replace the CONT-ZONE TEMPERATURE (8HK) (Ref. AMM TASK 21-63-34-000-001) and (Ref. AMM TASK 21-63-34-400-001).
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊(cè) AIR CONDITIONING 空調(diào)2(117)
