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5-30
Phaser 6280 Color Laser Printer Service Manual
Print-Quality Troubleshooting
Vertical Blank Lines
There are faded or completely non-printed lines along the page in the
direction of the paper travel from the leading edge to the trailing edge.
Initial Actions
■
Check the paper transfer path.
■
Ensure there are no debris on the transfer path.
Troubleshooting Reference Table
Applicable Parts
Example Print
■
Laser Unit, PL5.1.2
■
Print Cartridge (C/M/Y/K),
PL5.1.18-21
■
MCU Board, PL9.1.20
■
Image Processor Board, PL9.1.27
Troubleshooting Procedure Table
Step
Actions and Questions
Yes
No
1
1. Check the blank line’s regular
intervals.
2. Are there any blank lines on the
image?
Refer to
“Repeating
Defect
Measurement”
on page 5-23.
Go to step 2.
2
1. Check the Print Cartridge (C/M/Y/K)
for damages.
2. Is the Print Cartridge damaged?
Go to step 3.
Replace the
Print Cartridge
(page 8-10).
3
1. Check the paper condition.
2. Is the paper dry, recommended
type, and loaded in the correct
position?
Go to step 4.
Replace the
paper.
4
1. Check the Transfer Unit.
2. Are there any damages on the
Transfer Unit surface?
Replace the
Transfer Unit
(page 8-8).
Go to step 5.
Vertical Blank Lines
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