Loss of the WHC 1
1. Possible Causes
_______________
- WHC-1 (2DG1)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 30-42-00-710-001 Operational Test of the Windshield Anti-Icing and Defogging AMM 30-42-34-000-001 Removal of the Window Heat Computer (WHC) (2DG1,2DG2). AMM 30-42-34-400-001 Installation of the Window Heat Computer (WHC) (2DG1,2DG2).
3. Fault Confirmation
__________________
A. Test
(1) Do the operational test of the windshield anti-icing and defogging (Ref. AMM TASK 30-42-00-710-001).
4. Fault Isolation
_______________
A. If the test gives the maintenance message WHC 2DG1:
- replace the WHC-1 (2DG1), (Ref. AMM TASK 30-42-34-000-001) and (Ref. AMM TASK 30-42-34-400-001).
Loss of the WHC 2
1. Possible Causes
_______________
- WHC-2 (2DG2)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 30-42-00-710-001 Operational Test of the Windshield Anti-Icing and Defogging AMM 30-42-34-000-001 Removal of the Window Heat Computer (WHC) (2DG1,2DG2). AMM 30-42-34-400-001 Installation of the Window Heat Computer (WHC) (2DG1,2DG2).
3. Fault Confirmation
__________________
A. Test
(1) Do the operational test of the windshield anti-icing and defogging (Ref. AMM TASK 30-42-00-710-001).
4. Fault Isolation
_______________
A. If the test gives the maintenance message WHC 2DG2:
- replace the WHC-2 (2DG2), (Ref. AMM TASK 30-42-34-000-001) and (Ref. AMM TASK 30-42-34-400-001).
Loss of Power Supply of the WHC 1
1. Possible Causes
_______________
- WHC-1 (2DG1)
- wiring between the WHC 1 (2DG1) pin B/R and the ground terminal
- wiring between the WHC 1 pin B/C and the circuit breaker (5DG1)
- C/B-ANTI ICE/WHC/1 (5DG1)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 30-42-34-000-001 Removal of the Window Heat Computer (WHC)
(2DG1,2DG2).
AMM 30-42-34-400-001 Installation of the Window Heat Computer (WHC)
(2DG1,2DG2).
AMM 31-32-00-740-003 Ground Scanning of the CFDIU
ASM 30-42/01
3. Fault Confirmation
__________________
A. Test
(1) Do the BITE test of the CFDIU (Ref. AMM TASK 31-32-00-740-003).
4. Fault Isolation
_______________
A. Table of the circuit breakers used in this procedure:
-------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
122VU ANTI ICE/WHC/1 5DG1 X13
B. If the test gives the maintenance message NO WHC 1 DATA:
- do a check of the status of the circuit breaker (5DG1).
(1) If the circuit breaker is closed:
- do a check for 28VDC at pin B/C of the WHC 1 (2DG1) (Ref. ASM 30-42/01).
(a) If there is 28VDC:
- replace the WHC-1 (2DG1), (Ref. AMM TASK 30-42-34-000-001) and (Ref. AMM TASK 30-42-34-400-001).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞30-42-00∞∞∞∞∞∞∞∞∞∞Page 288
Aug 01/05 CES
(b) If there is no 28VDC:
- do a check for a ground signal at pin B/R of the WHC 1 (2DG1).
1_ If there is no ground signal:
- repair the wiring between the WHC 1 (2DG1) pin B/R and the
ground terminal.
2 If there is a ground signal:
_
- do a check of the wiring between the WHC 1 pin B/C and the circuit breaker (5DG1).
a If there is no continuity:
_
- repair the above wiring. b If there is continuity:
_ - replace the circuit breaker (5DG1).
(2) If the circuit breaker is open:
- close the circuit breaker.
(a) If the circuit breaker trips again:
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本文链接地址：A320 Trouble Shooting Manual 排故手册 除冰和排雨(82)
