Table 2-64 Image defects table (continued)
Problem Sample Cause Solution
A horizontal white line displays on
the page.
Repetitive horizontal white
lines appear.
Use the repetitive defects ruler to
identify the dirty roller. Clean the
roller. If the roller cannot be cleaned,
replace the roller.
Horizontal scratches are
present on the photosensitive
drum.
Replace the toner cartridge of the
color that matches the defect.
Scratches are present on the
circumference of the ITB.
Replace the ITB.
Image in a particular color does
not print in the correct color.
Poor contact exists in the
primary charging bias or
developing bias contacts
between the toner cartridge and
the product.
Clean each contact of the color that
produces the missing color. If the
problem remains after cleaning, check
the contacts for damage. Replace any
deformed or damaged parts.
The toner cartridge (primary
charging roller, developing
roller, or photosensitive drum)
is defective.
Replace the toner cartridge of the
color that matches the defect.
The high-voltage power-supply
lower is defective (no primary
charging bias or developing bias
output).
Replace the high-voltage power
supply.
The laser/scanner unit is
defective.
Replace the laser/scanner assembly.
Dropouts appear.
The secondary transfer roller is
deformed or has deteriorated.
Replace the secondary-transfer-roller.
The primary charging roller,
developing roller, or
photosensitive drum is
deformed or has deteriorated.
Replace the toner cartridge.
The fuser roller is deformed or
has deteriorated.
Replace the fuser.
The high-voltage power-supply
PCA is defective (no transfer
bias output).
Replace the high-voltage power-
supply.
478 Chapter 2 Solve problems ENWW
To Next Page
Loading...