Smudge - Epson Stylus Pro 4000 Field Repair Manual

Stylus Pro 4000 Field Repair Guide
Note: A smudge is a mark left on the media by contact. It can be caused by contact with the Print Head,
or contact with a dirty Roller.
Dirty Roller
A dirty Roller usually leaves a mark that repeats at an interval that is equal to the circumference of the Roller. Plac-
ing the image with the smudge back into the paper path, and aligning the smudge with the Printer's Rollers will indi-
cate which Roller is dirty.
Print Head
Most Print Head contact with the media is the result of the media curling up to meet the Print Head. It can also be
caused by a build up of contaminants on the Print Head, that decrease the distance between the Print Head and the
media.
Sometimes the platen gap (the distance between the Print Head and the media) is set improperly. It can be incorrect
because of user settings or because of incorrect measurement of the media thickness. Most media uses the
dard platen gap. The Standard
incorrect, the Paper Thickness Sensor should be checked, as well as the user platen gap settings found in the user
menu.
The Platen Gap can be calibrated using the

Smudge

Smudge
platen gap is always one step back from the closest platen gap. If the platen gap is
Platen Gap
Printer Component, Software Item,
Adjustment procedure.
LCD Display, Printer Button
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