Internal Failure of the BMC1
1. Possible Causes
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-BMC-1 (1HA1)
-XDCR-BLEED TRANSFER PRESS, ENG 1 (7HA1)
-SENSOR-EXCHANGER OUT TEMP, ENG 1 (6HA1)
-wiring
2. Job Set-up Information
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A. Referenced Information
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REFERENCE DESIGNATION
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AMM 36-11-00-740-001 BITE Test of the BMC 1(2) AMM 36-11-15-000-001 Removal of the Bleed Transferred Pressure Transducer (7HA1,7HA2) AMM 36-11-15-400-001 Installation of the Bleed Transferred Pressure Transducer (7HA1,7HA2) AMM 36-11-17-000-001 Removal of the Heat-Exchanger Outlet-Temperature Sensor 6HA1(6HA2) AMM 36-11-17-400-001 Installation of the Heat-Exchanger Outlet-Temperature
Sensor 6HA1(6HA2)
AMM 36-11-34-000-001 Removal of the BMC (1HA1, 1HA2)
AMM 36-11-34-400-001 Installation of the BMC (1HA1, 1HA2)
ASM 36-11/01
3. Fault Confirmation
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A. Test Do the BITE test of the BMC1 (Ref. AMM TASK 36-11-00-740-001).
4. Fault Isolation
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R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-228, 301-302,
A. If the test gives the maintenance message:
CHECK BMC1
-replace the BMC-1 (1HA1) (Ref. AMM TASK 36-11-34-000-001) and (Ref. AMM TASK 36-11-34-400-001).
1 -EFF : ALL
-∞∞36-11-00∞∞∞∞∞∞∞∞∞∞Page A292
--May 01/05 ---CES - (1) If the fault continues:
-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).
(a) If the fault continues:
-replace the SENSOR-EXCHANGER OUT TEMP, ENG 1 (6HA1) (Ref. AMM TASK 36-11-17-000-001) and (Ref. AMM TASK 36-11-17-400-001).
1 If the fault continues:
_
-do a check for 28VDC at pins 1 and 2 of the bleed transferred pressure transducer (7HA1).
a If there is no 28VDC:
_
-do a check and repair the wiring (Ref. ASM 36-11/01) between pin 1 of the bleed transferred pressure transducer (7HA1) and the first terminal block.
b If there is 28VDC:
_
-do a check and repair the wiring (Ref. ASM 36-11/01) between: . pin 3 of the bleed transferred pressure transducer (7HA1) and pin AA/15B of the BMC1 (1HA1) . pin 4 of the bleed transferred pressure transducer (7HA1) and pin AA/14B of the BMC1 . pin 4 of the exchanger out temperature sensor (6HA1) and pin AA/10B of the BMC1 . pin 2 of the exchanger out temperature sensor (6HA1) and pin AA/9B of the BMC1.
R **ON A/C 106-149, 229-299, 303-399, 401-499,
A. If the test gives the maintenance message:
CHECK BMC1 (1HA1)
-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:
-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).
(a) If the fault continues:
-replace the SENSOR-EXCHANGER OUT TEMP, ENG 1 (6HA1) (Ref. AMM TASK 36-11-17-000-001) and (Ref. AMM TASK 36-11-17-400-001).
1 If the fault continues:
_
-do a check for 28VDC at pins 1 and 2 of the bleed transferred pressure transducer (7HA1).
1 -EFF : ALL
-∞∞36-11-00∞∞∞∞∞∞∞∞∞∞Page A293
--Aug 01/05 ---CES -
R a_ If there is no 28VDC:
R - do a check and repair the wiring (Ref. ASM 36-11/01)
R between pin 1 of the bleed transferred pressure
R transducer (7HA1) and the first terminal block.
R b_ If there is 28VDC:
R - do a check and repair the wiring (Ref. ASM 36-11/01)
R between:
R . pin 3 of the bleed transferred pressure transducer
R (7HA1) and pin AA/15B of the BMC1 (1HA1)
R . pin 4 of the bleed transferred pressure transducer
R (7HA1) and pin AA/14B of the BMC1
R . pin 4 of the exchanger out temperature sensor (6HA1)
R and pin AA/10B of the BMC1
R . pin 2 of the exchanger out temperature sensor (6HA1)
R and pin AA/9B of the BMC1.
R **ON A/C ALL
B. Do the test given in para. 3.
1 -EFF : ALL
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--Feb 01/05 ---CES - Internal Failure of the BMC2
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本文链接地址：A320 Trouble Shooting Manual 排故手册 PNEUMATIC(84)
