R . pin A/4E of the GCU 1 and pin A/D2 of the ELEC/GEN 1 pushbutton R switch
「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, ∞∞24-22-00∞∞∞∞∞∞∞∞∞∞Page 273
Aug 01/05 CES
R . pin A/2G of the GCU 1 and pin A/D1 of the ELEC/GEN 1 pushbutton
R switch.
R (1) If the wiring is not correct:
R - repair or replace as necessary.
R (2) If the wiring is correct:
R - do a test of the contacts of the ELEC/GEN 1 pushbutton switch (Ref.
R ASM 24-22/02) for correct operation between:
R . pins A/D3 and A/D2 (normally closed)
R . pins A/D3 and A/D1 (normally open).
R (a) If the test is not OK:
R - replace the P/BSW-ELEC/GEN 1 (3XU1) on the ELEC panel 35VU.
R (b) If the test is OK:
R - replace the GCU-1 (1XU1) (Ref. AMM TASK 24-22-34-000-001) and
R (Ref. AMM TASK 24-22-34-400-001).
R C. Do the test given in para. 3.
R TASK 24-22-00-810-828
R Failure of the ELEC/GEN 2 Pushbutton Switch
R 1. Possible Causes_______________
R - P/BSW-ELEC/GEN 2 (3XU2)
R - GCU-2 (1XU2)
R - wiring
R 2. Job Set-up Information______________________
R A. Referenced Information
R -------------------------------------------------------------------------------
R REFERENCE DESIGNATION
R -------------------------------------------------------------------------------
R AMM 24-22-34-000-001 Removal of the GCU-1(2) (1XU1, 1XU2)
R AMM 24-22-34-400-001 Installation of the GCU-1(2) (1XU1, 1XU2)
R AMM 24-41-00-740-002 Operational Check of GAPCU via CFDS
R ASM 24-22/03
R 3. Fault Confirmation__________________
R A. Test
R (1) Do the BITE test of the GAPCU (Ref. AMM TASK 24-41-00-740-002).
R 4. Fault Isolation
_______________
R A. Table of the circuit breakers used in this procedure:
R -------------------------------------------------------------------------------R PANEL DESIGNATION IDENT. LOCATION R -------------------------------------------------------------------------------R 122VU ELEC/GCU/2 2XU2 T27
R B. If the BITE test gives the maintenance message PB SW ELEC GEN2 (3XU2)/ R GCU2 (1XU2):
R NOTE : After you do the trouble shooting for this fault, open and close
____ R the ELEC/GCU2 circuit breaker (2XU2) to remove all 28VDC power R supply from the GCU 2.
R - do a check of the wiring of the ELEC/GEN 2 pushbutton switch (3XU2) R (Ref. ASM 24-22/03) for an open circuit or a short to ground between:
R . pin A/1C of the GCU 2 and pin A/D3 of the ELEC/GEN 2 pushbutton R switch
R . pin A/4E of the GCU 2 and pin A/D2 of the ELEC/GEN 2 pushbutton R switch
「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, ∞∞24-22-00∞∞∞∞∞∞∞∞∞∞Page 275
Aug 01/05 CES
R . pin A/2G of the GCU 2 and pin A/D1 of the ELEC/GEN 2 pushbutton
R switch.
R (1) If the wiring is not correct:
R - repair or replace as necessary.
R (2) If the wiring is correct:
R - do a test of the contacts of the ELEC/GEN 2 pushbutton switch (Ref.
R ASM 24-22/03) for correct operation between:
R . pins A/D3 and A/D2 (normally closed)
R . pins A/D3 and A/D1 (normally open).
R (a) If the test is not OK:
R - replace the P/BSW-ELEC/GEN 2 (3XU2) on the ELEC panel 35VU.
R (b) If the test is OK:
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. Do the test given in para. 3.
R TASK 24-22-00-810-829
R Failure of the 1553 Data Bus between GCU 1 and GAPCU
R 1. Possible Causes_______________
R - GCU-1 (1XU1)
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本文链接地址：A320 Trouble Shooting Manual 排故手册 电源 3(4)
