Specifications
Troubleshooting Print Quality Problems - 5
P-4 Vertical Band Deletions
Step Actions and Questions
Action
(When There Is Problem)
Dirty reflecting mirror
Is the problem solved if you use the peach-colored slider
(built into the mirror assembly) to wipe the mirror clean?
Clean the mirror.
Paper conditions (moisture, warp, etc.)
Is the problem solved if you use new sheets of paper?
Replace the paper. Advise
the customer to stock paper
in a dry place.
Toner cartridge
Is the problem solved by replacing the toner cartridge with a
new one?
Replace the toner cartridge.
Paper usability
If the problem still occurs after the toner cartridge is
replaced, again replace the toner cartridge with another new
one, and replace paper with standard paper.
Is the problem solved?
* When acid paper is used, this problem may occur because of
a component of paper.
Replace paper with standard
paper.
Paper path
Are there obstructions such as burrs or objects or contami-
nation on the paper path?
Remove the obstructions or
replace the component.
Laser beam path
Are there obstructions or contamination on the laser beam
path from the laser/scanner assembly to the Drum?
Remove the obstructions or
contamination.
Transfer roller assembly
Are there foreign objects or contamination on the roller
portion of the transfer roller assembly?
Replace the transfer roller
assembly.
Fuser heater roller and fuser pressure roller
Are there scratches, contamination, or foreign objects on the
fuser heater roller or the fuser pressure roller?
Replace the roller.
Problem
There are areas of the image that are extremely light or missing entirely. These
missing areas form wide bands that run vertically along the page, in the direction
of paper travel.
Initial Analysis
Inspect the following components. Are they compatible with your printer ver-
sion, correctly installed, not damaged, deformed or contaminated, or free of
foreign objects sticking?
• Toner Cartridge • Power Supply Assy • Transfer Roller Assy
• Mirror Assembly • Laser/Scanner Assy • DC Controller Board
• Fuser Assembly • Fuser Pressure Roller • Static Eliminator
• Top Cover