1. Possible Causes
_______________
- CFDIU (1TW)
- wiring
- C/B-CFDIU/SPLY (2TW)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-32-34-000-001 Removal of the CFDIU (1TW)
AMM 31-32-34-400-001 Installation of the CFDIU (1TW)
AWM 31-32-44
3. Fault Confirmation
__________________
A. Test
Not applicable (see fault isolation).
4. Fault Isolation
_______________
A. do a check of the status of the circuit breaker (2TW).
(1) If the circuit breaker (2TW) is closed:
- do a check for 28VDC between pin AC/3 and pin AC/8 of the CFDIU (1TW) (Ref. AWM 31-32-44).
(a) If there is 28VDC:
- replace the CFDIU (1TW) (Ref. AMM TASK 31-32-34-000-001) and (Ref. AMM TASK 31-32-34-400-001).
(b) If there is no 28VDC:
- do a check for a ground signal at pin AC/8 of the CFDIU (1TW) (Ref. AWM 31-32-44).
1 If there is no ground signal:
_
- repair the wiring between CFDIU (1TW) pin AC/8 and the ground terminal (Ref. AWM 31-32-44).
2 If there is a ground signal:
_
- do a check of the wiring between CFDIU (1TW) pin AC/3 and the circuit breaker (2TW) (Ref. AWM 31-32-44).
「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 ∞∞31-32-00∞∞∞∞∞∞∞∞∞∞Page A205
May 01/05R CES
_
- repair the wiring.
b If there is continuity:
_ - replace the C/B-CFDIU/SPLY (2TW)
(2) If the circuit breaker (2TW) is open:
- close the circuit breaker.
(a) If the circuit breaker trips:
- replace the CFDIU (1TW) (Ref. AMM TASK 31-32-34-000-001) and (Ref. AMM TASK 31-32-34-400-001).
1 If the fault continues:
_
- do a check for a short to ground at the wiring between CFDIU (1TW) pin AC/3 and the circuit breaker (2TW) (Ref. AWM 31-32-44).
a If there is a short to ground:
_
- repair the wiring.
b If there is no short to ground:
_ - replace the circuit breaker (2TW).
(b) If the circuit breaker (2TW) stays closed and the fault
continues:
- replace the CFDIU (1TW).
「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 ∞∞31-32-00∞∞∞∞∞∞∞∞∞∞Page A206
May 01/05R
CES Loss of the Bus Output from the ACARS MU to the CFDIU
1. Possible Causes
_______________
- CFDIU (1TW)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 31-32-00-869-002 Procedure for Class 3 Faults Reading
AMM 31-32-34-000-001 Removal of the CFDIU (1TW)
AMM 31-32-34-400-001 Installation of the CFDIU (1TW)
ASM 31-32/05
3. Fault Confirmation
__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
R **ON A/C 001-049, 051-099, 101-105,
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 指示和記錄系統 1(33)
