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HP LaserJet Enterprise MFP M431

Troubleshooting. Image Defects 2

Fixing/fuser defects

Description

Slight shadows or offsets of the image are repeated down the page. The repeated image might fade with each recurrence.

Possible solutions

  1. Reprint the document.
  2. Check the paper type in the paper tray and adjust the printer settings to match. If necessary, select a lighter paper type.

Description

Toner rubs off along either edge of the page. This defect is more common at the edges of high-coverage jobs, and on light media types, but can occur anywhere on the page.

Possible solutions

  1. Reprint the document.
  2. Check the paper type in the paper tray and adjust the printer settings to match. If necessary, select a heavier paper type.
  3. Enterprise models only: From the printer control panel, go to the Edgeto- Edge menu and then select Normal. Reprint the document.
  4. Enterprise models only: From the printer control panel, select Auto Include Margins and then reprint the document.

Gray background or dark print

Description

The image or text is darker than expected and/or the background is gray.

Possible solutions

  1. Make sure that the paper in the trays has not already been run through the printer.
  2. Use a different paper type.
  3. Reprint the document.
  4. Mono models only: From the Home screen on the printer control panel, go to the Adjust Toner Density menu, and then adjust the toner density to a lower level.
  5. Make sure that the printer is within the supported operating temperature and humidity range
  6. Replace the cartridge.
Error Code
Service Mode, Troubleshooting
Parts Catalog
Compatibility
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