Cleaned the transfer roller of the HP 4 Plus. Suddenly, a 25 year-old memory came back about greying pages. How many service calls to copiers and printers are resolved by diagnosing damp paper? Lots, if I remember rightly. Sometimes the A/C is shut down for 6 months, time for even the packs of paper to feel the humidity. New paper.
It looks quite good, and now I see it has a serial port. Is it possible a USB to Serial lead would be better? ie, is it a common procedure with older kit?
Failing this, I can of course print via my old HP PC - unless there is something stopping network printing being sent into a parallel port.
If it's okay, could someone jog my memory how to set it up. I'm not sure if it makes a difference how they're connected, but both PCs use yellow wire to the router. Vista laptop, wireless.