Print Unit Removal - Lexmark 2390 003 - B/W Dot-matrix Printer Service Manual

Print Unit Removal

1. Remove the tractor assembly
see "Push Tractor Assembly Removal" on page
2. Remove the top cover
see "Top Cover Removal" on page
3. Disconnect all cables connected to the main logic board. Do not
bend or twist the flexible cable when disconnecting it from CN3.
4. Disconnect the power supply cable from connector CN1 on the
sub logic board.
5. Disconnect the ground wire from the sub logic board plate.
6. Remove the screw [1].
7. Remove two screws [2] and then remove the inserts.
8. Do the following for the left and right side frames. Insert a
screwdriver between the bottom front of the side frame and the
bottom cover. Raise the screwdriver gently to release the latch
while sliding the print unit toward you.
9. Slide the print unit toward you until it stops, then lift to separate
the print unit from the bottom cover.
4-53.
4-61.
Repair Information 4-47