5-8 Phaser 3140/3155/3160 Printer Service Manual
Print-Quality Troubleshooting
Print-Quality Troubleshooting Procedures
Print-Quality Defect Definitions
The following table lists print-quality defects, their definition, and the page where
each corrective procedure appears.
Defect Definition Go to
Repeating Defects A pattern of horizontal lines or spots. page 5-9
Printing Begins at
Wrong Position
Printing begins at wrong position on the paper. page 5-10
Light or Undertone
Print
The overall image density is too light. page 5-10
Black Print The entire image area is black. page 5-11
Uneven Density Density is uneven between left and right sides. page 5-13
Background
Contamination
A light or gray contamination appears on all or
most of the page.
page 5-14
Ghosting (1) There is ghosting at 75.3 mm intervals on the
entire print.
page 5-15
Ghosting (2) Ghosting appears at 75.3 mm intervals when
printing on card stock or transparencies from
the manual feeder.
page 5-16
Ghosting (3) White ghosting appears at 75.3 mm intervals. page 5-17
Ghosting (4) There is ghosting at 75.3 mm intervals. Fuser
operating temperature is too high.
page 5-18
Vertical White
Lines
There is faded or white lines from the leading
edge to the trailing edge.
page 5-19
Vertical Lines are
Curved
The vertical components of the image are
curved.
page 5-20
Vertical Black Line
or Band
There are faded or black lines from the leading
edge to the trailing edge.
page 5-21
Horizontal Black
Line or Band
There are black lines running parallel with the
leading edge of the print.
page 5-22
Black or White
Spots
The toner image is not completely fused to the
paper. The image easily rubs off.
page 5-23
Skew The printed image is not parallel with the
media.
page 5-24
Stains on the Front
of the Page
The background of the front of the page is
stained.
page 5-26
Stains on the Back
of the Page
The back of the page is stained. page 5-27
Blank Page (1) The entire image area is blank. page 5-28
Blank Page (2) The entire print is blank. One or several blank
pages are printed.
page 5-29
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