Initial Inspection and Diagnostic Overview

AV CONTROL UNIT

Fail-Safe

When the ambiance temperature becomes extremely low or extremely high, AV control unit displays the message and limits the AV control unit function.

FAIL-SAFE CONDITIONS

When the ambiance temperature is 20�C (-4�F) or lower, or when it is 70�C (158�F) or higher
Display
The messages displayed on fail-safe conditions are as shown below:






DESCRIPTION OF CONTROLS






Ability Operation Mode
There is an ability operation mode for Fail-safe due to low or high ambiance temperature.
If HDD data can be read, fail-safe is shown, then normal displays are displayed only for functions which can be operated.

RELEASE CONDITIONS OF FAIL-SAFE

Fail-safe is released on following conditions and normal mode is restored.
When The Temperature of HDD Is Low or High
If the ambient temperature becomes out of fail-safe condition range, normal mode is restored.