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COMPONENT MAINTENANCE MANUAL
00001059
D.
Fault Isolation Procedure
DEFECT
POSSIBLE CAUSE
CORRECTION
1. Insulation Resistance Test (Ref. SUBTASK 21-22-91-750-001-A01)
Insulation Test
R < 10 megohms
Incorrect insulation between the
mechanical ground and the detection
board (01-450).
Replace the detection board (01-450).
Remove the detection board
(01-450) (Ref. SUBTASK
21-22-91-030-001-A01).
Install the detection board
(01-450) (Ref. SUBTASK
21-22-91-430-001-A01).
Incorrect insulation between the
mechanical ground and the motor phases.
Replace the equipped housing
(01-640).
Remove the equipped housing
(01-640) (Ref. SUBTASK
21-22-91-010-005-A01).
Install the equipped housing
(01-640) (Ref. SUBTASK
21-22-91-410-001-A01).
Incorrect insulation between the
mechanical ground and the electronic
boards.
Replace the power board (01-370).
Remove the power board
(01-370) (Ref. SUBTASK
21-22-91-010-004-A01) or (Ref.
SUBTASK 21-22-91-010-004-B01).
Install the power board (01-370) (Ref.
SUBTASK 21-22-91-410-002-A01).
Replace the control board (01-330).
Remove the control board
(01-330) (Ref. SUBTASK
21-22-91-010-003-A01) or (Ref.
SUBTASK 21-22-91-010-003-B01).
Install the control board
(01-330) (Ref. SUBTASK
21-22-91-410-003-A01) or (Ref.
SUBTASK 21-22-91-410-003-B01).
Replace the filter board (01-170).
Remove the filter board
(01-170) (Ref. SUBTASK
21-22-91-040-001-A01) or (Ref.
SUBTASK 21-22-91-040-001-B01).
Install the filter board (01-170) (Ref.
SUBTASK 21-22-91-440-001-A01).
21-22-91
Page 1015
Dec 15/06
The document reference is online, please check the correspondence between the online documentation and the printed version.