A320 Trouble Shooting Manual 排故手册 PNEUMATIC(63)

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R  - Remove the BMC-1 (1HA1) (Ref. AMM TASK 36-11-34-000-001). 
R  - Do a check for 28 VDC at pin AA/8A of the BMC1. 
R  (a) If there is no 28 VDC: 
R  - Do a check and repair the wiring between pin AA/8A of the BMC1 
R  and pin 2 of the circuit breaker 3HA1. 
R  (b) If there is 28 VDC: 
R  - Do a check of the wiring between pin A/D1 of the ENG 1 BLEED 
R  pushbutton switch and pin AA/7A of the BMC1. 
R  1_  If there is continuity:
R  - Replace the P/BSW-ENG 1 BLEED (4HA1). 
R  a_  If the fault continues:
R  - Replace the BMC-1 (1HA1) (Ref. AMM TASK 36-11-34-000-001) 
R  and (Ref. AMM TASK 36-11-34-400-001). 
R  2_  If there is no continuity:
R  - Repair the wiring between pin A/D1 of the ENG 1 BLEED 
R  pushbutton switch and pin AA/7A of the BMC1 (Ref. ASM 36-
R  11/01).
 C. Do the test given in para. 3.

 1 -EFF : ALL

-∞∞36-11-00∞∞∞∞∞∞∞∞∞∞Page A229
 --Feb 01/05 ---CES - Loss of or Accidental Electrical Closure of the Bleed Pressure-Regulator Valve of the Engine 2

 1. Possible Causes
_______________
 -SOLENOID-BLEED PRESS REG V CTL, ENG 2 (10HA2)
 -P/BSW-ENG 2 BLEED (4HA2)
 -AIR BLEED/ENG 2/CTL (3HA2)
 -BMC-2 (1HA2)
 -wiring
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R  24-00-00-810-803 Circuit Breaker Tripped and/or C/B TRIPPED Warning 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) AMM 36-11-55-000-001 Removal of the Bleed-Pressure-Regulator Valve
 Control-Solenoid (10HA1,10HA2) AMM 36-11-55-400-001 Installation of the Bleed-Pressure-Regulator Valve Control-Solenoid (10HA1,10HA2) ASM 36-11/02
 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. Table of the circuit breakers used in this procedure:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------122VU AIR BLEED/ENG 2/CTL 3HA2 Z23 122VU AIR BLEED/ENG 2/MONG 2HA2 Z22
 1 -EFF : ALL

-∞∞36-11-00∞∞∞∞∞∞∞∞∞∞Page A230
 --May 01/05 ---CES -

R  B. If the test gives the maintenance message: 
R  BMC2 OR SOLENOID 10HA2 CKT 
R  NOTE : If the maintenance message BMC2 OR SOLENOID 10HA2 CKT comes into____ 
R  view with no associated ECAM warning, no trouble shooting 
R  procedure is necessary. 
R  - Do a check of the status of the circuit breaker (3HA2). 
R  (1) If the circuit breaker (3HA2) is closed: 
R  - Do a check for 28 VDC at pin A/1 of the connector of the bleed 
R  pressure regulator valve control solenoid (10HA2) with the ENG 2 
R  BLEED pushbutton switch (4HA2) released (OFF legend on). 
R  (a) If there is 28 VDC: 
R  - Do a check for ground at pin A/2 of the connector of the bleed 
R  pressure-regulator valve control-solenoid (10HA2). 
R  1_  If there is no ground signal:
R  - Repair the wiring from the pin A/2 to the ground point. 
R  2_  If there is a ground signal:
R  - Replace the SOLENOID-BLEED PRESS REG V CTL, ENG 2 (10HA2) 
R  (Ref. AMM TASK 36-11-55-000-001) and (Ref. AMM TASK 36-11-
R  55-400-001). 
R  (b) If there is no 28 VDC: 
R  - Do a check for 28 VDC at pin A/D2 of the ENG 2 BLEED pushbutton 
R  switch (4HA2). 
R  1_  If there is 28 VDC:
R  - Replace the P/BSW-ENG 2 BLEED (4HA2). 
R  a_  If the fault continues:
R  - Do a check and repair the wiring from the pin A/1 of the 
R  bleed pressure regulator valve control solenoid to the 
R  pin A/D3 of the ENG 2 BLEED pushbutton switch. 
R  2_  If there is no 28 VDC:
R  - Do a check and repair the wiring from the pin A/D2 of the 
　
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