All 3 color lights and the spray light are flashing on my HP K850
I didn't have the same problem, but I had to un-stall the printer and re-stall the printer. I believe that a virus change the the printer drivers, the printer was finishing printing then the all the cartridges lights came on.
See my notes below. If anything you refresh you printer drivers.
My problem was 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.
Mar 25, 2009 |
HP Officejet Pro K850 InkJet Printer