Laser printer print defects - Black lines parallel or perpendicular
Problem
Cause
Solution
How common*
Comments
black lines - parallel or perpendicular
Repetitive defect. If the lines are repeated at a consistent interval down the page, this is a repetitive defect
See the Repetitive Image Defect Ruler In service manual
10
*On a scale of 1-10, how often this problem occurs (10 being most likely).
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