3. Fault Confirmation
__________________
A. Test
(1) Do the BITE test of the BMC2 (Ref. AMM TASK 36-11-00-740-001).
4. Fault Isolation
_______________
A. If the test gives the maintenance message:
NO DATA FROM BMC1
-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 and repair the wiring for the ARINC 429 OUTPUT BUS from the BMC1 (1HA1) AA/10C, 11C to the BMC 2 (1HA2) AA/1D, 2D, (Ref. ASM 36-11/03).
B. Do the test given in para. 3.
1
-EFF : ALL
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--Feb 01/05R ---CES -
Loss of the BMC2
1. Possible Causes
_______________
-BMC-2 (1HA2)
-wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 36-11-00-740-001 BITE Test of the BMC 1(2)
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 36-11/03
3. Fault Confirmation
__________________
A. Test
(1) Do the BITE test of the BMC1 (Ref. AMM TASK 36-11-00-740-001).
4. Fault Isolation
_______________
A. If the test gives the maintenance message:
NO DATA FROM BMC2
-replace the BMC-2 (1HA2) (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 and repair the wiring for the ARINC 429 OUTPUT BUS from the BMC2 (1HA2) AA/10C, 11C to the BMC1 (1HA1) AA/1D, 2D, (Ref. ASM 36-11/03).
B. Do the test given in para. 3.
1
-EFF : ALL
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--Feb 01/05R ---CES -
Loss of the Power Supply of the Bleed Pressure-Regulator Valve of the Engine 1
1. Possible Causes
_______________
-BMC-1 (1HA1)
-
wiring between the BMC1 pin AB/1B and the ground terminal
-
wiring between the BMC1 pin AA/8A and the circuit breaker (3HA1)
-C/B-BLEED VLV ENG 1 (3HA1)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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
__________________
A. Not applicable.
4. Fault Isolation
_______________
A. Table of the circuit breakers used in this procedure:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR BLEED/ENG 1/CTL 3HA1 D12
B. If the fault symptom is identified by the maintenance message CHECK PRESS REG V PWR SPLY:
-do a check of the status of the circuit breaker (3HA1).
(1) If the circuit breaker (3HA1) is closed:
-do a check for 28VDC at pin AA/8A of the BMC1 (1HA1) (Ref. ASM 36-11/01).
(a) If there is 28VDC:
-replace the BMC-1 (1HA1) (Ref. AMM TASK 36-11-34-000-001) and (Ref. AMM TASK 36-11-34-400-001).
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--Feb 01/05R ---CES -
(b) If there is no 28VDC:
-do a check for ground at pin AB/1B of the BMC1 (1HA1).
1_ If there is no ground:
- repair the wiring between the BMC1 pin AB/1B and the ground
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