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HP Color LaserJet Pro M454, MFP M479 - Random blue lines are seen on color printouts

Issue

Color printouts might display random blue lines that are 1 pixel in height and about quarter inch in length more than once on a page when printing Adobe .PDF or PowerPoint (.ppt/.pptx) files to an HP Color LaserJet Pro M454 Printer or MFP M479 using the discrete PCL 6 driver.
This issue occurs when the printer control panel displays the following firmware version in the Printer Information menu:
  • HP Color LaserJet Pro M454dn and M454nw lists firmware version "SHMNT2XXXN001.1903A.00".
  • HP Color LaserJet Pro M454dw lists firmware version "SHMNTOXXXN001.1903A.00".
  • HP Color LaserJet Pro MFP M479 lists firmware version "CLRWTRXXXN001.1903A.00".
Figure : Circles highlighted in the image indicate the random blue lines
The circles highlighted in the image indicate the random blue lines on a color printout.

Solution

Install the latest firmware version using one of the following methods:
  • Method one: Update the firmware using the control panel
  • Method two: Update the firmware using the Firmware Update Utility

Workaround (optional)

If you do not update the firmware, use one of the following workaround options to resolve the issue:
  • Option one: Change the Print Data Optimization settings in the PCL 6 printer driver
  • Option two: Download and install the HP Universal Print Driver (UPD) PCL 6 for Windows

Cause

Adobe .PDF and PowerPoint (.ppt or .pptx) files automatically use the “Optimize for Raster” print path when sent to the printer. It was discovered that the printer firmware (SHMNT2XXXN001.1903A.00, SHMNTOXXXN001.1903A, and CLRWTRXXXN001.1903A) when compressing the raster data caused this issue.

Affected printers

This document applies to the following printers:
  • HP Color LaserJet Pro M454dn
  • HP Color LaserJet Pro M454dw
  • HP Color LaserJet Pro M454nw
  • HP Color LaserJet Pro MFP M479dw
  • HP Color LaserJet Pro MFP M479fdn
  • HP Color LaserJet Pro MFP M479fdw
  • HP Color LaserJet Pro MFP M479fnw

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