Sometimes the printheads get clogged up and even a HP clean facility will not shift it.
You could try putting some hot water in a jam jar lid and soaking for a few minutes and then dry with some kitchen towel.... This may do the trick as it will desolve the clog and allow the ink to flow again.
Taz
Was this helpful?
Yes
No
Popular Solutions for HP Officejet 6310 All-In-One
have just put in a refilled black ink cartridge in my hp 6310. the black works, but no more color...
(More)
have just put in a refilled black ink cartridge in my hp 6310. the black works, but no more color printing and the printer is really super slow