Problem Sample Cause Solution
The page is all black or a solid
color.
Poor contact exists in the
primary charging bias or
developing bias contacts
between the print cartridge
and the product.
Clean each contact of the color that
produces the all black or solid color.
If the problem remains after
cleaning, check the contacts for
damage. Replace any deformed or
damaged parts. Replace the
affected print cartridge.
White spots appear in an image The primary transfer roller is
deformed or has deteriorated.
Replace the ITB. See Intermediate
transfer belt (ITB) on page 188.
The secondary transfer roller
is deformed or has
deteriorated.
Replace the secondary-transfer-
roller. See
Secondary transfer roller
on page 184.
The back of the page is dirty. The secondary transfer roller
is dirty.
Replace the secondary transfer
roller. See
Secondary transfer roller
on page 184.
The fuser inlet guide or
separation guide is dirty.
Clean the dirty parts. If the dirt does
not come off, replace the guide.
The pressure roller is dirty. Run the cleaning page several
times. If the dirt does not come off,
send a fuser cleaning kit. If the issue
persists, replace the fuser. See
Fuser on page 179.
Vertical streaks or bands appear
on the page.
Scratches are present on the
circumference of the
photosensitive drum.
Replace the print cartridge of the
color that matches the defect.
Scratches are present on the
circumference of the fuser
roller.
Replace the fuser. See Fuser
on page 179.
Scratches are present on the
circumference of the ITB.
Replace the ITB. See Intermediate
transfer belt (ITB) on page 188.
The ITB drive roller is
deformed or has deteriorated.
The ITB cleaning mechanism
is malfunctioning.
ENWW Solve image-quality problems 433
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