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lol, just gone through the whole 'self help' on the HP site and i have an MRGN value of 1 indicating that the black cartridge is fudged! lol! Time for a new one me thinks! ;)
In the middle of printing a letter it's now saying the black cartridge is the incorrect type even though it's been the same one for months! :dapprove:
Tried resetting the printer, removing and reinstalling the cartridges but nothing... :(
Anymore ideas guys? :)