-∞∞36-11-00∞∞∞∞∞∞∞∞∞∞Page 235
--Feb 01/05R ---CES -
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-228, 301-302,
B. If the fault symptom is identified by the Class 3 maintenance message: 36-11-15 DRIFT TRANSF-PRESS XDCR 7HA1
-do a check of the status of the circuit breaker (2HA1).
(1) If the circuit breaker is closed:
-do a check for 28VDC at pin A/1 of the bleed transferred-pressure transducer (7HA1) (Ref. ASM 36-11/01).
(a) If there is no 28VDC:
-do a check for ground at pin A/2 of the bleed transferred-pressure transducer (7HA1).
1_ If there is no ground:
- repair the wiring between pin A/2 of the bleed
transferred-pressure transducer (7HA1) and the ground
terminal.
2 If there is ground:
_
-do a check of the wiring between pin A/1 of the bleed transferred-pressure transducer (7HA1) and the circuit breaker (2HA1).
a If there is no continuity:
_ -repair the above wiring.
b If there is continuity:
_ -replace the circuit breaker (2HA1).
3 If the fault continues:
_
-make sure that there is a 0 psig output signal (0.9VDC) on the BMC1 (1HA1) connector between pins AA/14A and AA/15B.
a If there is no 0.9VDC:
_
-replace the XDCR-BLEED TRANSFER PRESS, ENG 1 (7HA1) (Ref. AMM TASK 36-11-15-000-001) and (Ref. AMM TASK 36-11-15-400-001).
4 If the fault continues:
_
-do a check and repair the wiring from the bleed transferred-pressure transducer (7HA1) to the BMC1 (1HA1), pins A/3 and A/4 to pins AA/15B and AA/14B.
(b) If there is 28VDC:
-replace the XDCR-BLEED TRANSFER PRESS, ENG 1 (7HA1).
1
R -EFF : 001-049, 051-099, 101-105, 151-199,
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-201-228, 301-302, -May 01/05 ---CES -
(2) If the circuit breaker is open:
-close the circuit breaker.
(a) If the circuit breaker trips:
-replace the BMC-1 (1HA1) (Ref. AMM TASK 36-11-34-000-001) and (Ref. AMM TASK 36-11-34-400-001).
1 If the fault continues:
_
-do a check for a short to ground at the wiring from pin A/1 of the bleed transferred-pressure transducer (7HA1) to the circuit breaker (2HA1).
a If there is a short to ground:
_ -repair the related wiring.
b If there is no short to ground:
_
-replace the C/B-BMC 1 (2HA1).
(b) If the circuit breaker stays closed and the fault continues:
-replace the BMC-1 (1HA1).
R **ON A/C 106-149, 229-299, 303-399, 401-499,
B. If the fault symptom is identified by the maintenance message TRANSF-PRESS XDCR 7HA1:
-do a check of the status of the circuit breaker (2HA1).
(1) If the circuit breaker is closed:
-do a check for 28VDC at pin A/1 of the bleed transferred-pressure transducer (7HA1) (Ref. ASM 36-11/01).
(a) If there is no 28VDC:
-do a check for ground at pin A/2 of the bleed transferred-pressure transducer (7HA1).
1 If there is no ground:
_
-repair the wiring between pin A/2 of the bleed transferred-pressure transducer (7HA1) and the ground terminal.
2 If there is ground:
_
-do a check of the wiring between pin A/1 of the bleed transferred-pressure transducer (7HA1) and the circuit breaker (2HA1).
a If there is no continuity:
_ -repair the above wiring.
b If there is continuity:
_
-replace the circuit breaker (2HA1).
1 -EFF : ALL
-∞∞36-11-00∞∞∞∞∞∞∞∞∞∞Page 237
--Aug 01/05 ---CES -
R 3_ If the fault continues:
R - make sure that there is a 0 psig output signal (0.9VDC) on
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本文链接地址：A320 Trouble Shooting Manual 排故手册 PNEUMATIC(31)
