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Manual for officejet pro k850 - Printers & Copiers

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This is the link you need

http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?product=1101938&lc=en&cc=us&dlc=en&submit.y=8&submit.x=4&lang=en&cc=us

Don't forget to leave feedback - "fixya" if it is the one you want!

Posted on Apr 17, 2008

  • boff1 Apr 18, 2008

    Did it work? Let me know.

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5 Suggested Answers

  • 1 Answer

SOURCE: HP Officejet Pro K850 printing problem

Soon after I posted the problem on this site, I went to different margin setting windows and they all appeared correct. I tried another test page and noticed the printer was off. I turned it back on and it worked perfectly. I had previously unplugged the power and cable and rebooted the system several times to no avail. I also have an HP Officejet 7410 All-In-One so I didn't need the other for everyday operations, just preferred it.

Posted on Feb 07, 2008

  • 3 Answers

SOURCE: HP K850 cartridge problem

I had the same problem, all cartridges lights came on.
I did two things:

1st: I clean the print cartridges plugs with Q-tips, just to insure there wasn't any ink build on the plugs. If you look were the cartridges are, you will see four plugs one for each of the cartridges. Each plug has four contacts. They should be a bright metal color. If they dull in color, they have ink on them. Unplug the printer and pull all the cartridges out and gentlely wipe the the contacts with Q-tips. Re-stall all the cartridges.

Note: The cleaning did not solve my problem but its good maintenance since in was looking for a solution.

2nd: What work for me was I un-stall my printer totally. Turn off the printer then turn off the computer, had a cup of tea, rebooted the computer and re-install the HP cd disk and drivers, turn the printer back on. After I reinstall the software and put the printer back on my network, everything is working fine for the last two days. The lites are off and the HP toolbox is reading the ink cartridges status correctly. I believe that a virus change the printer drives.

Solution by;
eagleeye140

Posted on Apr 19, 2009

  • 1 Answer

SOURCE: HP Officejet Pro - Printer Door Open Light Stuck On

There is a problem with the proximity sensor for the top door. I have took mine off and soldered the connections over to trick it into thinking the door is closed all the time. I am trying to source a new part

Posted on Jan 11, 2010

pineworks
  • 4041 Answers

SOURCE: how do i clean the heads to get a better print

Hi There
Summary
Usage of compatible ink and leave the printer idle too long may cause printhead clogging
What should you do if you get this problem. Relax; you may recover the printhead by unclogging it. Follow these steps to unclog the printhead

1. Right click in the printer driver name
2. Select Properties menu
3. Click Maintenance tab
4. Click on cleaning sign for regular cleaning. Perform this up to 3 times.
5. If this does not work, perform Deep Cleaning

And if that not work

Some times it needs a good clean up but this is up to you if you want to do this,
But after you done this prime the printer so it gets the inks back in the heads, it may take a little time for the inks to work.

Ok.

There is fluid cleaner for this but I can never find any in the shops the only ones I seen is when they sell them in Tesco but they come in with the ink refill bottles so I just use worm water by it self on a cloth and dabbing on the heads to clean them, it will not harm the heads but not to much water.

Some heads are on the inks them self but some have them inside the printer so I not know your printer so if the heads are inside you need to get them out you may find that some heads will just clip out put some need to be unscrewed so you got to know how they come out so be careful and not push to hard on them, if the heads are on the ink then it is a easy job to clean them,
It worth a try it worked for me more than ones.

Please all I ask is call back and just gave a vote, it will gave me some satisfaction to know am helping some one, so I will keep on helping.
All The Best: Pineworks

Posted on Mar 24, 2010

willinois
  • 77 Answers

SOURCE: The color cartridges have all

Try re-seating the ink cartridges and printing a test page. Those were new HP cartridges, right? Not some garbage from a ink cartridge refiller off ebay?

Posted on Mar 28, 2011

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The color cartridges have all been replaced in the HP Officejet Pro K850 now all the pages are printing blank?


Try re-seating the ink cartridges and printing a test page. Those were new HP cartridges, right? Not some garbage from a ink cartridge refiller off ebay?

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My machine is hp officejet pro K850


Sometimes when you unplug devices for 5 to 10 minutes the memory resets. This my help if not let me know.

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One page printing than 3 head light blinking c/m/y


pls clean and oiling the catridge rod of your printer.

Jun 25, 2009 | HP Officejet Pro K850 InkJet Printer

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Our office has a HP Laserjet Pro K850. The cartridge lights and tear drop symbol has come up. We have replaced all cartridges but the lights are still on. Unable to print. Can you advise or let me know...


Go to site below to get your maintenance manual:

http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c00501024/c00501024.pdf

Don't forget to rate me.

Jan 14, 2009 | HP Officejet Pro K850 InkJet Printer

1 Answer

HP Officejet Pro - Printer Door Open Light Stuck On


There is a problem with the proximity sensor for the top door. I have took mine off and soldered the connections over to trick it into thinking the door is closed all the time. I am trying to source a new part

May 20, 2008 | HP Officejet Pro K850 InkJet Printer

1 Answer

HP Officejet Pro K850 printing problem


Soon after I posted the problem on this site, I went to different margin setting windows and they all appeared correct. I tried another test page and noticed the printer was off. I turned it back on and it worked perfectly. I had previously unplugged the power and cable and rebooted the system several times to no avail. I also have an HP Officejet 7410 All-In-One so I didn't need the other for everyday operations, just preferred it.

Feb 06, 2008 | HP Officejet Pro K850 InkJet Printer

1 Answer

Printing from different trays


this can normaly be solved by going into the printer preferences and then setting the trays manualy in the software. otherwise the printer will automaticaly select the main tray first then move onto the mp tray. sorry if it sounds a bit vague but these options change from printer to printer and have not seen a k850 for a while Hope thyis helps Cops Pete@wedotoners.com

Aug 16, 2007 | HP Officejet Pro K850 InkJet Printer

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