Xerox 8830 Service Manual

PQ17A Smudge
Symptom/ check
A smudge is a displacement of the toner image
on the drum or the media.
Perform GP2, Image on Drum to determine if
the Smudge occurs on the media or the drum.
Vellum Smudge is a special defect that exhibits
marginal fusing fix. Toner can chip off of the
media and horizontal lines are broken (Image
displacement).
Location of Smudge
Media
Media
Media
Media
Media
Probable Cause
Heat Roll
Fabric Guide
Excessive media curl (smudge
appears 100 mm from lead or
trail edge)
Detack Corotron
Buckle Switch
Combination of Vellum beam strength and low Heat Roll drive force.
(The media is flexible enough that it buckles between Pressure
Plates A and B. The toner then melts and partially sticks to the Heat
Roll. As the media enters the Pressure Plate B, it flattens and the
image is displaced in front of it's correct position. The toner can also
become a clump on the media and easily chip off of the media.)
Drum
Drum
Mechanical interference with the
image on the drum
Buildup of developer material on
the lower extrusion of the
developer housing rubbing the
developed image on the drum.
Corrective Action
Check for a worn (smooth) Heat
Roll. Replace (REP 10.2)
Check for a worn / contaminated
Fabric Guide. (REP 8.9)
Ask the customer to replace the
media.
Check for contamination or signs
of arcing. Clean / replace
(PL 9.4)
Check the Buckle Switch for
correct operation (PL 8.4)
Replace the Fabric Guide
(REP 8.9) and the Heat Roll
(REP 10.2).
Check for interference.
Push excess developer material
back into the housing.
PQ 17A Smudge
1/98
3-26
8830

Xerox 8830 Specifications

General

Brand	Xerox
Model	8830
Category	Printer
Language	English