07-08-2014 01:18 PM - edited 07-08-2014 01:24 PM
So I have an HP Officejet Pro K8600 that I got slightly used. They were throwing it out because it didn't print black or yellow, and so I took it and replaced the printhead and it worked great for about a month of light use (Approx. 1 sheet a day, nothing too color intensive). However, I have started to have issues with it.
Despite the ink and black\yellow printhead being new (And geniune HP parts), I am now having issues with it not printing correctly. Attached is a picture of a PQ diagnostic page. Apologies about the poor quality, I don't have a scanner at the moment, so all I can do is take a picture. It doesn't seem to be doing any black or cyan ink at all, as the black and cyan bars are mostly gone, and the green bar is solid yellow.
Any ideas on what would cause this? I don't think it's a printhead issue, because one color on each printhead works, but I'm not sure what it could be.
EDIT: I should mention, even though I didn't think it would help at all, I have tried aligning the printheads, cleaning them, and calibrating the linefeed. None seems to have helped.
07-09-2014 01:23 PM
Welcome to the HP Forums!
I see that your HP Officejet K8600 will not print Black or Cyan. I am happy to help you with this issue!
I would recommend to go through this print quality guide. Troubleshooting Print Quality Issues.
If that doesn't work, please call our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region. Country-language selector.
Hope this helps you, and have a great day!