Lexmark 637, CX510DE Toner fog or background shading appears on prints, Troubleshooting 301

Troubleshooting		301
Action	Yes	No
Step 3	Go to step 4.	The problem is solved.

aLoad paper from a fresh package.

Note: Paper absorbs moisture due to high humidity. Store paper in its original wrapper until you use it.

bResend the print job.

Do streaked vertical lines appear on prints?

Step 4 Go to step 5. The problem is solved.

aRemove, and then reinstall the imaging kit.

Warning—Potential Damage: Do not expose the imaging kit to direct light for more than 10 minutes. Extended exposure to light may cause print quality problems.

Warning—Potential Damage: Do not touch the underside of the imaging kit. This could damage the imaging kit.

bResend the print job.

Do streaked vertical lines appear on prints?
Step 5	Contact customer	The problem is solved.
Replace the imaging kit, and then resend the print job.	support.
Do streaked vertical lines appear on prints?

Toner fog or background shading appears on prints

ABCDE

ABCDE

ABCDE

Action	Yes	No
Step 1	The problem is solved.	Go to step 2.

aRemove, and then reinstall the imaging kit.

Warning—Potential Damage: Do not expose the imaging kit to direct light for more than 10 minutes. Extended exposure to light may cause print quality problems.

Warning—Potential Damage: Do not touch the underside of the imaging kit. This could damage the imaging kit.

bResend the print job.

Does fog or shading disappear from the prints?