Failure of the Ground Power Control Unit

TASK 24-41-00-810-801-A
Failure of the Ground Power Control Unit

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 24-41-00-740-004	Operational Check of the GPCU via the CFDS
AMM 24-41-34-000-001	Removal of the Ground Power Control Unit (GPCU)
AMM 24-41-34-400-001	Installation of the Ground Power Control Unit (GPCU)

3. Fault Confirmation
Subtask 24-41-00-710-050-A ** ON A/C NOT FOR ALL

A. Test
Do the operational check of the GPCU with the CFDS AMM 24-41-00-740-004.

4. Fault Isolation
Subtask 24-41-00-810-050-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message GPCU:

Subtask 24-41-00-710-063-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.A.

[Rev.8 from Aug 2018] 2026.04.04 04:26:53 UTC