Print-Quality Troubleshooting 5-27
Horizontal Streaks
There are black lines running horizontally across the page in the process direction.
Initial Actions
■ Check that the paper supply is dry and meets specifications.
■ Inspect the paper path for items, such as staples, paper clips, and paper
scraps.
■ Check the installation of the Drum Cartridge.
■ Check the Drum Cartridge Drum surface for scratches.
■ Check that the Drum Cartridge ground contacts are clean.
Horizontal Streaks Troubleshooting Reference
Applicable Parts Example Print
■ Drum Cartridge
■ Transfer Roller
■ Laser Assembly
■ Fuser
■ Image Processor Board
■ Engine Logic Board
Horizontal Streaks Troubleshooting Procedure
Step Actions and Questions Yes No
1
Check paper condition.
1. Load new, dry paper.
2. Print a Test Print.
Does the problem still occur?
Go to Step 2. Problem solved.
2
Check the paper path.
Is the paper path clear?
Go to Step 3. Remove obstacles or
contamination.
3
Check the Drum Cartridge.
1. Install a new Drum Cartridge.
2. Print a Test Print.
Is the image density normal?
Problem solved. Go to Step 4.
s5500-06
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