"Martin Eastburn" wrote in message
...
Do a Google or other search for "HP 3510 Printer" and manuals are
shown.
Might insert Service manual in the search line - and you might find
it.

I did and there was pages of files.

Martin


HP's repair instructions for the HP 6110 I was given are that when it
fails, buy something else.

I did find a posting on how to temporarily fix its design defect.

-jsw