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C5650n/C5650dn User’s Guide
Print Quality Problems • 115
Lines, Black (Vertical)
Lines, White (Vertical)
Possible
cause
Remedy
Image drum is
damaged.
Replace image drum. See “Replace an Image Drum” on
page 62.
Toner is low. Change toner cartridge. See “Replace a Toner
Cartridge” on page 54.
Periodic black
lateral lines or
spots.
If the lines or spots occur at intervals of approximately
44 to 94 mm
The green surface of the image drum is damaged or
dirty. If damaged, replace the image drum cartridge.
See “Replace an Image Drum” on page 62. If dirty,
wipe the image drum gently with soft tissue. If this
does not work, replace the image drum. See “Replace
an Image Drum” on page 62.
113 mm
The fuser roller is damaged. Change the fuser. See
“Replace the Fuser” on page 71.
The image drum
has been
exposed to
light.
Remove the image drum from the printer and store it in
a dark place for several hours. If this does not work,
replace the image drum. See “Replace an Image
Drum” on page 62.
Remedy
Clean LED head with lens cleaner or soft tissue.
Change toner cartridge.
Change image drum.