C-7980 - Means that the waste tonerresevoir in the process unit is full with less than 100,000 copies onthe unit. Clean/ empty the waster toner and vac.Also clean the sensor. You may have to change the Process unit if cleaning does not work.
we have an HP Photosmart C4440 All-in-One, and the copy/scan features don't work. they will copy or...
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we have an HP Photosmart C4440 All-in-One, and the copy/scan features don't work. they will copy or scan, but all that comes out is a completely black page, no matter what i put in or where i place it. the light appears to be working. i can't seem to find any reference to this problem anywhere!