Lexmark 2390 003 - B/W Dot-matrix Printer Service Manual page 36

Symptom
Wavy vertical lines,
uneven left margin or
character width is
reduced.
Ribbon Feed Problems
Symptom
Ribbon comes off,
becomes loose or
folded, or jams.
Ribbon feeds
correctly but is noisy.
2-12
Action
Clean and lubricate the carrier shaft.
If the carrier drive belt is worn or broken, replace
the carrier unit.
Go to the "Carrier Drive, Home Position Sensor,
Ribbon Feed Service Check" on page
Action
Check the ribbon cartridge for binds or damage.
Go to the "Carrier Drive, Home Position Sensor,
Ribbon Feed Service Check" on page
2-17.
2-17.