Print-Quality Troubleshooting 5-27
Horizontal Streaks
There are black lines running horizontally across the page in the process direction.
Initial Actions
â– Check that the paper supply is dry and meets specifications.
â– Inspect the paper path for items, such as staples, paper clips, and paper
scraps.
â– Check the installation of the Drum Cartridge.
â– Check the Drum Cartridge Drum surface for scratches.
â– Check that the Drum Cartridge ground contacts are clean.
Horizontal Streaks Troubleshooting Reference
Applicable Parts Example Print
â– Drum Cartridge
â– Transfer Roller
â– Laser Assembly
â– Fuser
â– Image Processor Board
â– 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.
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