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4227-100
POST Service Check
FRU
1
Power
2
Operator Panel
3
Main Logic Board
4
Printer Cable
Action
Disconnect the parallel or serial cable and turn
power on.
If there is no printer activity, go to the
Failure Service Check" on page
If the power supply fan turns on but no LEDs
light, go to the
"Operator Panel Service Check"
on page
2-20.
If the Power LED turns on but POST does not
complete, replace the main logic board.
Readjust the
"Bidirectional Print Adjustment"
on page 4-4
and check the
"Printhead-to-Platen Gap Adjustment" on page
4-2.
If POST completes, reconnect the parallel or
serial cable and turn power on again.
If POST now fails, there is a problem with the
cable, or the parallel connector on the main
logic board.
Diagnostic Information 2-25
"Power
2-26.
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