Post Service Check - Lexmark 4227 - Forms Printer B/W Dot-matrix Service Manual

4227-300
FRU/Symptom
7 Operator Panel
8 Main Logic Board

POST service check

FRU
1 Power
2 Operator Panel
3 Main Logic Board
4 Printer Cable
2-24
Service Manual
Action
If paper does not move at all, verify the
FormFeed button is working correctly by
performing the Service Menu Button Test.
If no other problem is found, replace the main
logic board.
"Bidirectional print adjustment"
Perform the
on page 4-3
, and
adjustment" on page 4-2
Action
Disconnect the parallel or serial cable and turn
the 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 2-20
If the Power LED turns on but POST does not
complete, replace the main logic board.
"Bidirectional print adjustment"
Perform the
on page 4-3
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.
"Printhead-to-platen gap
.
.
"Power
.