5-14 Phaser 6300/6350 Color Laser Printer Service Manual
Blank Prints
Initial Actions
â– Run the Engine Test print to help isolate the problem between the Image
Processor Board and the Engine Control Board.
Troubleshooting Reference Table
Applicable Parts Example Print
â– Imaging Unit, PL6.1.1
â– Developer Frame Assembly, PL7.1.1
â– Developer Drive Assembly, PL8.1.1
â– Laser Unit, PL6.1.2
â– Engine Control Board, PL9.1.16
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Check for any obstructions or debris in
the laser beam path between the
Laser Unit and the Imaging Unit.
Remove any
obstruction.
Go to Step 2.
2
Replace the Imaging Unit (page 8-5).
Did the image quality improve?
Complete Go to Step 3.
3
Replace the Transfer Roller
(
page 8-5).
Did the imaging quality improve?
Complete Go to Step 4.
4
Replace the Laser Unit (page 8-76).
Does the image quality improve?
Complete Go to Step 5.
5
Replace the HVPS (page 8-109).
Does the image quality improve?
Complete Go to Step 7.
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