Does it only happen when using the glass? What happens when you use the automatic feeder, does it work fine then?
Please try this also:
Reset the printer, this can force some types of scanners to calibrate which might fix the problem.
Remove any items from the scanner glass and ADF, then close the scanner lid.
With the printer turned on, disconnect the power cord from the printer and from the wall outlet or power strip.
Wait at least 15 seconds.
Plug the power cord back into a wall outlet.
Note: HP recommends connecting the printer power cord directly to a wall outlet.
Reconnect the power cord to the printer.
Try to scan, copy, or fax.Please let me know if it works after performing a "Reset".
Even after doing a "Reset"?
If so, then a good cleaning is likely in order:
Clean the scan glass and underside of the scan lid with a soft, lint-free cloth sprayed with glass cleaner.
Turn the printer off, then disconnect the power cord.
Lift the scanner lid.
Spray a soft, lint-free cloth with glass cleaner, then wipe the scanner glass, glass strip (if present), the white backing under the scanner lid, and the white strip under the lid (if present) until clean, dry, and streak-free.
To protect the interior printer parts, do not spray the cleaner directly on the glass or on the underside of the lid.
Figure : Clean the scanner glass and under the lid, and any glass or white strips (if present)
White scanner lid backing
White ADF scanner lid strip (if present)
Glass ADF scanner strip (if present)
Main scanner glass
Reconnect the power cord, turn on the printer, close the scanner lid completely, then scan, copy, or fax.
Did it ever work?
What is the history of this printer, was it purchased "used"?
Does the light come on when scanning?
When was it purchased?
As these suggestions have not resolved the issue, I must opt out of this transaction. Maybe another technician can offer some advice that will help.Thank you,Bob
your problem is the scanner is broken.
Most likely the light that it uses to do the scanning has burnt out.
that is a pretty common problem with scanners that are a few years old.
On very high end scanners the bulb can be replaced.
On home printers its really not worth the bother. You have to take the entire thing apart and probably heat melt the glue around the glass and then glue it back together after and hope you didnt lose the calibration.
Its just cheaper and easier to buy another printer.
Sorry it is not better news but at least you know what happened and you won't waste a lot of time trying to fix it.