Question about HP LaserJet Pro 400 M401DN Laser Printer

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Printer printing crazy symbols

I have a HP laserjet pro 400 m401dn and when you try to print a regular document, or any document it prints out random symbols and blank pages. I'm using windows 7 and it has the universal PCL 6 driver. It is networked and I have updated the firmware. Not sure what else to try. Any help would be great!

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Its maybe usb cable issue

Posted on Dec 05, 2015

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Just delete all print from printer and restart printer and computer then try again
happen because some cancellation of print during priting

Posted on Mar 31, 2014

  • stephaniekev Mar 31, 2014

    @arun bora this issue is not isolated to just one PC. I think I've narrowed down that it is just the printer. But I will try this anyways.



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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: HP LaserJet 2420 Printing trouble

I think that Odyssey user is right it maybe that the print driver is not compatible with the program you are using goto or and download the PCL 5e driver

Hope this helps you
Thanks J

Posted on Jan 13, 2008

  • 1 Answer

SOURCE: Extra pages getting printed


Posted on Oct 23, 2008

  • 1 Answer

SOURCE: HP LaserJet 1022 Printing Blank Pages

I had this same issue, are you able to print from the printer's internal test feature?  If so try turning the power off for at least 10 seconds.  This is just at temporary fix I am still looking for a permanent fix that does not involve replacing the printer.

Posted on Feb 13, 2009

SOURCE: Driver for HP Laserjet 6L Pro

Your problem could be either due to the malfunctioning of the driver or you may have installed a wrong printer's driver.
This can be rectified by reinstalling the printer;s driver. Please find the proper driver in the following link.

Good luck!


Posted on Jun 03, 2009

  • 1 Answer

SOURCE: hp laserjet 3600 PCL XL error when printing a PDF

This is a known issue with 'host-based' printers like the 3600. You need the PCL5 driver, which this printer will not work with. You need a different printer, such as the HP 3520.

This page will explain it all.

Posted on Oct 07, 2009

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I would upgrade the driver first. You can also do a factory refresh which brings the printer back to the original condition. Make sure that you get the ip address off the config page just in case you need to reset the settings.

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79 Service error


  1. Turn off the printer.
  2. Turn on the printer.
  3. Try printing a job from a different software program. If the job prints, go back to the first program and try printing a different file. (If the message only appears with a certain software program or print job, contact the software vendor for assistance.)

If the message persists, try the following:
  1. Cycle power.
  2. Reseat or replace the interface cable and cycle power.
  3. Remove the DIMMs one at a time and cycle power.
  4. Try using the parallel interface, if possible.
  5. With the EIO cards removed from the printer perform a cold reset:
    1. Remove any accessory, including the HP Jetdirect card.
    2. Turn off the printer.
    3. Hold down the GO button while turning on the printer.
    4. When the printer displays COLD RESET, release the GO button.

Aug 30, 2012 | HP LaserJet Pro 400 M401DN Laser Printer

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