R TASK 24-20-00-810-921 R Failure of the BTC 2 Status Sense-Circuit R 1. Possible Causes
_______________
R - GCU-2 (1XU2) R - BTC-2 (11XU2) R - wiring
R 2. Job Set-up Information
______________________
R A. Referenced Information
R -------------------------------------------------------------------------------R REFERENCE DESIGNATION R -------------------------------------------------------------------------------
R AMM 24-22-34-000-001 R AMM 24-22-34-400-001 R AMM 24-22-55-000-001 R AMM 24-22-55-400-002 R R AMM 24-41-00-740-002 R ASM 24-22/03
R 3. Fault Confirmation
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R A. Test
Removal of the GCU-1(2) (1XU1, 1XU2)
Installation of the GCU-1(2) (1XU1, 1XU2)
Removal of the Contactors (9XU1, 9XU2, 11XU1, 11XU2)
Installation of the Contactors (9XU1, 9XU2, 11XU1,
11XU2)
Operational Check of GAPCU via CFDS
R (1) Do the BITE test of the GAPCU (Ref. AMM TASK 24-41-00-740-002).
R NOTE : If the CFDS message PB BUS TIE (10XU) / BTC2 (11XU2) / GCU2
____ R (1XU2) comes into view when the flight crew or the maintenance R personnel puts the BUS TIE pushbutton switch (10XU) in the R released or OFF position the trouble shooting is not R necessary. This can occur during an electrical system test or R during trouble shooting. R If the flight crew or the maintenance personnel did not R operate the BUS TIE pushbutton switch and this CFDS message R comes into view, do the trouble shooting procedure that R follows.
R (a) If the BITE test gives the message TEST FAILED: R - do the trouble shooting given in Para 4.A.
R (b) If the BITE test gives the message TEST PASSED: R - do the trouble shooting given in Para 4.B.
「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 : 401-499, ∞∞24-20-00∞∞∞∞∞∞∞∞∞∞Page C201
Aug 01/05 CES
R 4. Fault Isolation_______________
R A. If the BITE test gives the message TEST FAILED:
R - push the line key adjacent to the TEST FAILED message.
R (1) If the maintenance message GCU2 (1XU2) comes into view:
R - replace the GCU-2 (1XU2) (Ref. AMM TASK 24-22-34-000-001) and (Ref.
R AMM TASK 24-22-34-400-001).
R B. If the BITE test gives the message TEST PASSED:
R - replace the BTC-2 (11XU2) (Ref. AMM TASK 24-22-55-000-001) and (Ref.
R AMM TASK 24-22-55-400-002).
R (1) If the fault continues:
R - do a check of the status sense wiring for an open circuit or high
R resistance condition between pin A/4C of the GCU 2 and pin B/29 of
R the BTC 2 (Ref. ASM 24-22/03).
R (a) If the wiring is not correct:
R - repair or replace as necessary.
R (b) If the wiring is correct:
R - replace the GCU-2 (1XU2) (Ref. AMM TASK 24-22-34-000-001) and
R (Ref. AMM TASK 24-22-34-400-001).
R C. When you replace a component or repair the wiring:
R - do the subsequent flight before you do the check of the Class 3 Faults
R of the GAPCU from the CFDS to make sure that the system operates
R correctly.
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本文链接地址：A320 Trouble Shooting Manual 排故手册 电源 2(65)
