Oki ML6300FB User Manual page 49

Problem
Print blurring
The characters are
too pale to display
properly on the
paper.
A line of print is
missing.
Cause
The Paper
Thickness lever
position does not
match the paper.
The printer is set
to print at high
speed.
The ribbon has
reached its end of
life.
The ribbon
cartridge is not
installed correctly.
The ribbon has
been wound
incorrectly.
The ribbon is not
transferring
properly.
Broken wire pins.
Troubleshooting > 49
Action
Correct the Paper
Thickness lever
setting.
Set the speed to
normal.
Replace the ribbon by
a new one.
Reinstall the ribbon
cartridge correctly.
Replace the ribbon
cartridge by a new
one.
Replace the ribbon
cartridge by a new
one.
Contact your dealer.