When Something Goes Wrong
4–6 3255 4073–002
Overall Print is Light or Smudged
Cause Action
Ribbon cassette worn Replace the ribbon cassette.
For step-by-step instructions, see “Changing the Ribbon
Cassette” in section 2.
Slip out of specification Check that the slip you are using meets the specifications
for the EFP9800 printer. For more information see,
“Ordering Paper and Supplies” in section 1.
Slips should not be more than five parts thick. Total
thickness should be no greater than 0.014 inches (0.355
mm).
Note: The receipt is included as one or two of the parts
depending if it is one-ply or two-ply.
Five-part slips should be double-printed by the host
computer program.
Some slips may have poor quality carbons or chemicals
that don’t react properly, causing poor print quality.
Printhead gap too large or small If the print is light, the gap between the printhead and the
paper may be too large; if print is smudged, the gap may
be too small. Adjust the printhead gap.
Open the cover and the clamshell. Move the anti-rotation
bearing one click to the back to decrease the printhead
gap or one click to the front to increase the printhead
gap.
See “Adjusting the Printhead Gap” in section 3 for an
illustration and instructions.
Some Dots are Printing Light
Cause Action
Printhead worn; causing some dots to
print light on a consistent basis
The printhead must be replaced. Contact a Unisys-
authorized service representative..
Ribbon worn Check for wear in the ribbon and replace the cassette if
necessary. For more information, see “Changing the
Ribbon Cassette” in section 2.
