asked Jul 2, 2015 at 1:46pm
Hp HP Color LaserJet 2840

HP LaserJet 2840 saying 'install cyan cartridge'

Hi all, I recently purchased a second hand HP LaserJet 2840. When I bought it, it was working perfectly apart from the scanner. I haven't used it since and now with I start it up it says to install they cyan cartridge, even though there is one already installed. After many google searches, we have checked the alignment and that is fine, I have cleaned all the chips with alcohol and I have checked that there is still in fact toner in the cartridge. I honestly am at a loss on what else to try and am hoping someone here might know of something else (except replacing, which I will do as soon as I can) but for now I really just need to print off a few pages for tomorrow :(