Fault of the MDDU

TASK 31-38-00-810-814-A
Fault of the MDDU

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 31-38-00-740-002	BITE Test of the Multipurpose Disk Drive Unit (MDDU)
AMM 31-38-22-000-001	Removal of the MDDU
AMM 31-38-22-400-001	Installation of the MDDU

3. Fault Confirmation
Subtask 31-38-00-740-056-A ** ON A/C NOT FOR ALL

A. Do the BITE test of the Multipurpose Disk Drive Unit (MDDU) AMM 31-38-00-740-002.

4. Fault Isolation
Subtask 31-38-00-810-063-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message MDDU (1TD):

Subtask 31-38-00-740-057-A ** ON A/C NOT FOR ALL

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

[Rev.8 from Aug 2018] 2026.04.04 04:30:08 UTC