Partial Missing Cyan Plane

HP Color LaserJet Enterprise M855 Printer series

Color Definition:    Yellow-green:

Fade color

Fig. Yellowgreen-6.1

As shown below, the issue may vary in location and appearance. Click a sample image below to see a larger version of it.

Fig. Yellowgreen-6.1

Fig. Yellowgreen-6.2

Fig. Yellowgreen-6.3

Description

The background color of the yellow-green test page is missing toner. The boundary between where the toner is present and not present creates a wavy pattern.

Most likely causes

Troubleshooting and suggestions

  1. Check the toner level of the printer from the control panel. Show me how. If the toner level is low, replace the toner cartridge, Show me how.
  2. Print and examine another set of PQ troubleshooting pages. Show me how. If the problem is resolved, stops here; otherwise, continue with the following steps.
  3. Check the position of the Toner GatePicture of the Gate of Toner Cartridge. on the Toner Cartridge and Image Drum to ensure that toner is flowing from the Toner Cartridge into the Image Drum:
    1. Remove the cyan toner cartridge Picture of the printer cartridge., Show me how, and rock it gently.
    2. Remove the cyan image drum Picture of the image drum., Show me how.
    3. Check the plastic pins on the cyan toner cartridge Picture of the printer cartridge., and ensure that they are not broken. Show me how.
    4. If the plastic pins are broken, replace the toner cartridge, Show me how.
    5. Examine the toner gates on the cyan toner cartridge Picture of the printer cartridge.. Make sure that they are in closed position. Show me how.
    6. Examine the toner gates on the cyan image drum Picture of the image drum.. Make sure that they are in closed position. Show me how.
    7. Reinsert the cyan image drum. Show me how.
    8. Reinsert the cyan toner cartridge. Show me how.
  4. Print and examine another set of PQ troubleshooting pages. Show me how.
  5. If the issue is not resolved, Contact HP.

Recommended parts

Order a cyan print cartridge.

Order a cyan image drum.

Note: It is not necessary to replace the other print cartridges or image drums.

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