Scan Direction Dark Streaks
There are dark lines running parallel with the leading edge of the print.
Initial Actions:
Perform Initial Actions from
Print Quality Troubleshooting Practices
Areas of the Printer that Apply to Scan Direction Dark Streaks
Imaging Unit
Transfer Unit belt
Troubleshooting Steps
Resolution
1. Print the Color Test Pages. Does the problem occur in one primary color?
Yes – Replace the Imaging Unit
of the defective color.
No – Go to Step 2.
2. Inspect the Transfer Unit. Has the cleaning blade flipped or failing to clean the
Transfer Unit?
Yes – Replace the Transfer Unit.
No - Go to Step 3.
3. Inspect the Fuser rollers for contamination. Is the Fuser contaminated?
Yes – Replace the Fuser.
No - Go to Step 4.
4. Print a test print Did the test pattern print correctly?
Yes – Replace the Fiery Control
Board
No - Replace Engine Control
Board