Has anyone else had a problem with paper continuously feeding into the
Aculaser C900?

This particular printer will feed and print 1 A4 page - but continues to try
and feed more paper with the empty input tray thumping up and down about 6
times even if there is only 1 page to print!
Loading several sheets of paper into the tray just means that 2 or 3 sheets
are taken through the paper path resulting in a paper jam.

It must be something fairly simple, a paper path sensor out of position, a
dry solder joint, etc. - but I can't find it.
It really does print well (1 page at a time!), but this fault is driving me
nuts. Anyone had the same fault?

David.