IBM 3745 Problem Determination Manual page 339

Control Panel' Problems
3
Press Service Mode repeatedly
until 0 blinks.
• If 0 does not blink or is
incorrectly displayed, press
Exit and
CO
• If
0
blinks or is correctly
displayed, press Validate,
then go to next step.
4
Press Function repeatedly until 5
blinks.
• If 5 does not blink or is
incorrectly displayed, press
Exit and
CO
• If 5 blinks and is correctly
displayed, press Validate.
All segments of all the
displays and indicators of the
control panel should be lit, as
illustrated.
If all segments are lit, go
to next step.
- If at least one segment is
not lit, pre$s Exit and
5
Press Function once.
• If all segments of the Function
display are lit, go to next step.
• If at least one segment is not
lit, press Exit and
CO
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IBM 3745 Communication Controller: Problem Determination Guide
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