Vertical dark bands

Step 1

1. Check if the printer is using a genuine and supported Lexmark toner cartridge.

   Note:  If the toner cartridge is not supported, then install a supported one.



2. Print the document.

Do vertical dark bands appear on prints?

Go to step 2.

The problem is solved.

Step 2

1. Remove the toner cartridge, and then remove the imaging unit.

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

   Warning—Potential Damage:  Do not touch the photoconductor drum under the imaging unit. Doing so may affect the quality of future print jobs.



2. Insert the imaging unit, and then insert the cartridge.



3. Print the document.

Do vertical dark bands appear on prints?

Go to step 3.

The problem is solved.

Step 3

1. Remove the imaging unit.

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

   Warning—Potential Damage:  Do not touch the photoconductor drum under the imaging unit. Doing so may affect the quality of future print jobs.



2. Remove any packing material that is stuck on the imaging unit.

   

   Note:  Make sure to remove any obstruction between the charge roller and photoconductor drum.



3. Insert the imaging unit.



4. Print the document.

Do vertical dark bands appear on prints?

Go to step 4.

The problem is solved.

Step 4

1. Check if a bright light enters the right side of the printer, and move the printer if necessary.



2. Print the document.

Do vertical dark bands appear on prints?

Contact customer support.

The problem is solved.