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.
SOURCE: hp officejet pro k5400 will
1. Printheads have an expiry date so I'd recommend checking that the printhead has not past its expiry or something similar. It's a shot in the dark but may be relevant.
2. It's also possible that the connecting strip at the back of the printheads slot is soiled with ink or condensation... Try using a cotton bud to gently clean this strip of any moisture, wipe the contact on the printhead too (NOT the printhead nozzles!) and then reinsert the printhead.
As Rowdytown points out though, pulling the power on this printer and then reinserting after a couple of minutes usually resolves any internal issues as well by hard resetting the printers state.
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
SOURCE: I have an HP Officejet Pro 7580. When printing in
Press "set up" button until number 6
Number 6 is "tools"
press OK
press forward arrow (to right of ok button)
No.2 is clean printhead
No.3 is align printer
No.4 is calibrate line feed
SOURCE: no connection ref hp officejet pro 8500 a909a
How are you connecting to the printer (over the network or a direct USB connection)? If you are using a USB connection, try a new cable or plugging into a different USB port. If you use a USB hub, try a direct connection.
If you are using a network connection, check if your firewall is blocking the connection. Also check that the router (or switch) didn't dropped the network connection and didn't re-synch with the printer (or worse changed the IP address of the printer).
I hope this helps.
Cindy Wells
Testimonial: "superb"
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