Post Service Check - Lexmark 2380 - Forms Printer B/W Dot-matrix Service Manual

FRU
2 Pull Tractor
Sensor

POST Service Check

FRU
1 Power LED
2 Cables
3 Operator Panel
4 Main Logic Board
Action
A failed pull tractor sensor can cause
Alt + Park/Load not to function. With the
tractor in the push position, press Alt+Park/
Load several times while alternately holding
down and releasing the left pull tractor
actuator. The paper should not park or load
when the pull tractor actuator is held down. If it
does, go to the "Pull Tractor Sensor Service
Check" on page 2-38.
Action
If the power LED is not on, go to the
Service Check" on page
A faulty interface cable can cause POST
errors. Disconnect the interface cable from the
printer and turn the printer off and then on.
Check the connections of the short flexible
cable and the power cable to the main logic
board and sub logic board.
Check the condition and continuity of the
operator panel cable.
If no problem is found, the problem may be in
either the operator panel or the main logic
board. Replace the operator panel and retest
the printer.
Replace the main logic board if necessary.
Reset the bidirectional print adjustment; refer
to "Bidirectional Print Adjustment" on page 4-5.
Diagnostic Information 2-31
"Power
2-32.