I have an HP LaserJet M1212NF MFP All-in-One connected to my father's PowerMac G5 running OS X Tiger.
It worked fine for the three months he's had it, but now when he tries to scan something, everything in the scanning software's window is dimmed (there is no physical button to scan). I tried reinstalling the software and the printer's firmware but that did nothing.
Any other ideas?