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Print Quality Problems
6-10
❖
DocuPrint 4512/4512N User Guide
Vertical white stripes. Corotron parts dirty. Clean the main corotron and tranfer corotron,
as described in the section
“Cleaning the
Corotron Wires”
(page 7-10).
Toner Cartridge defective. Replace the Toner Cartridge, as described in
the section
“Replacing the Toner Cartridge
and Cleaning Felt”
(page 7-2).
Fusing unit dirty. Replace the Cleaning Felt, as described in the
section
“Replacing the Toner Cartridge and
Cleaning Felt”
(page 7-2).
Photoconductor / Drum unevenly
worn.
Replace the Photoconductor / Drum, as
described in the section
“Replacing the
Photoconductor / Drum”
(page 7-6).
Repetitive defects
including ghost images.
Print density set too high. Turn the print density adjuster dial
counterclockwise to decrease the toner density.
Refer to
“Printer Components”
(page 1-3) to
locate the print density adjuster.
Fusing unit dirty. Replace the Cleaning Felt, as described in the
section
“Replacing the Toner Cartridge and
Cleaning Felt”
(page 7-2).
Toner low or unevenly distributed. Carefully remove the Toner Cartridge and
gently agitate it to distribute toner evenly.
Photoconductor / Drum damaged. Replace the Photoconductor / Drum, as
described in the section
“Replacing the
Photoconductor / Drum”
(page 7-6).
Table 6.2 Print quality problems
(continued)
Problem
Possible Cause(s) Corrective Action(s)
Table 6.2 Page 3 of 7