Specifications

Troubleshooting Print Quality Problems - 8
P-6 Vertical Streaks
Step Actions and Questions
Action
(When There Is Problem)
Toner cartridge
Is the problem solved by replacing the toner cartridge with a
new one?
Replace the toner cartridge.
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.
Laser/scanner assy
Use a sheet of paper to cover the window through which the
laser beam is emitted from the laser/scanner assembly.
Does the problem still occur?
Replace laser/scanner
assembly. If problem
persists, replace DC
controller board.
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 black lines running vertically along the page.
Initial Analysis
Inspect the following components. Are they compatible with your printer version,
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