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Customer says only BW shows this problem, in both copies and prints.
I will take a look tomorrow and run tests on my own.

Independent technician here, a potential customer sent me this (Attached)
Any ideas what can be causing this problem? Laser related maybe? I have not performed any test yet, equipment is on a very...

If the problem persists after cleaning the corona wires, the drums electrical contacs and the ones inside the machine, you will need to replace the drum units, they probably reached the end of its...

Try checking the paper pickup solenoid, sometimes they get sticky and cause the paper to stop halfway through.

Good Luck!

Any error codes?

Seen this before, are you using the Univeral Driver? If so, you need to uninstall that driver and then install the PCL6 or the Postcript driver.

Also you need to change the host name in the...

In order to reset the message, yo need to replace the chip on the Imaging Unit, but I think it's better if you replace the unit, that is the right way to fix the problem.

Have a great day!

Here you go:

http://www.lbrty.com/tech/Manuals_HP/M377_M452_M477_rm.pdf

37053

From the Firmware Readme:

"The elapsed time for an update depends on the I/O transfer time as well as the time that ittakes for the printer to reinitialize. The I/O transfer time depend on the...

Yesterday, a customer brought in a HP ColorLaserjet Pro m251 with similar symptomps, I replaced one of the cartridges (the yellow one in my case) and the noise whas gone.

The error 1102 means that “The login user name is incorrect or the domain name has not been entered.

A couple of months ago, a customer brought me a HP Deskjet 3050, she said that it was her daughter's printers and she was trying to do her homework but the printer was jamming the paper. I took a...

You need to download the pl532 driver (here) and then install it manually.

In Windows, go to Start>Printers>add a printer.
Go through the menus one at a time and when it asks if you have a disk,...

Maybe you can try changing the transfer rolller, or the black cartridge. :confused:

Found this on the Service Manual (See attachment)

Did you check the charge corona and PC drum negative contact? Maybe they are broken, misaligned or deformed.

You need to replace the entire Fuser Assembly, HP laserjet fuser assemblies are part of HP maintenance kits and are considered a consumable item to be replaced at specified page count intervals on...

Hello everyone.

I'm having issues with my Ricoh Pro 5100, I'm getting this weird streaks mostly when printing solid colors, the original
owner said that he thinks that the problem started...