R TASK 24-22-00-810-822
R Failure of the Generator Control Unit 2
R 1. Possible Causes_______________
R - GCU-2 (1XU2)
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 3. Fault Confirmation__________________
R A. Test
R (1) Read the Class 3 Faults of the GAPCU from the CFDS (Ref. AMM TASK 24-
R 41-00-740-002).
R 4. Fault Isolation_______________
R A. If the Class 3 Faults gives the maintenance message GCU2 (1XU2):
R - replace the GCU-2 (1XU2) (Ref. AMM TASK 24-22-34-000-001) and (Ref. AMM
R TASK 24-22-34-400-001).
R B. 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.
R If the test continues to give the fault message, continue the trouble
R shooting procedure.
