R (1) If the maintenance message GCU1 (1XU1) comes into view:
R - replace the GCU-1 (1XU1) (Ref. AMM TASK 24-22-34-000-001) and (Ref.
R AMM TASK 24-22-34-400-001).
「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 : 401-499, ∞∞24-20-00∞∞∞∞∞∞∞∞∞∞Page B211
Aug 01/05 CES
R B. If the BITE test gives the message TEST PASSED:
R - do a check of the coil return wiring for a short circuit or a short to
R ground between pin B/5 of the BTC 1 and pin A/9A of the GCU 1 (Ref. ASM
R 24-22/02).
R (1) If the wiring is not correct:
R - repair or replace as necessary.
R (2) If the wiring is correct:
R - do a check of the BTC 1 auxiliary contact for correct operation
R between pin B/27 and pin B/29 (Ref. ASM 24-22/02).
R (a) If there is no continuity:
R - replace the BTC-1 (11XU1) (Ref. AMM TASK 24-22-55-000-001) and
R (Ref. AMM TASK 24-22-55-400-002).
R (b) If there is continuity:
R - do a check of the wiring for a short circuit or a short to
R ground between pin B/29 of the BTC 1 and pin A/4C of the GCU 1
R (Ref. ASM 24-22/02).
R 1 If the wiring is not correct:_
R - repair or replace as necessary.
R 2 If the wiring is correct:_
R - replace the GCU-1 (1XU1) (Ref. AMM TASK 24-22-34-000-001)
R and (Ref. AMM TASK 24-22-34-400-001).
R C. Do the test given in para. 3.
R TASK 24-20-00-810-891
R Overcurrent on the GEN 2 Because of a Failure of the BTC 2 Status 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 24-20-00-810-919
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
__________________ R A. Test
Overload on the Electrical Network of the Generator 2
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 GEN2 OVERCURRENT + GCU2 (1XU2)/ BTC2
____ R (11XU2) comes into view, do the trouble shooting for an IDG 2 R overcurrent condition with the procedure (Ref. TASK 24-20-00-R 810-919).
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.
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).
「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 B213
Aug 01/05 CES
R B. If the BITE test gives the message TEST PASSED:
R - do a check of the coil return wiring for a short circuit or a short to
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