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4227-X00
POST Service Check
FRU
1
Power
2
Operator Panel
3
Main Logic Board
4
Printer Cable
2-24
Service Manual
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 2-25
If the power supply fan turns on but no LEDs
"Operator Panel Service
light, go to the
Check" on page 2-19
If the Power LED turns on but POST does not
complete, replace the main logic board.
"Bidirectional Print
Readjust the
Adjustment" on page 4-4
"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.
"Power
.
and check the
.
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