Kibo informs me that (k_teppo) stated that:

Have a look at the tray balancer mechanism. There is an arrow on the
tray and a "floating" arrow on the mechanism. The arrows should be
pointing at each other. Sometimes debris can get under the pivoting
part of the tray and it'll bind, causing a no-feed paper jam.

This can happen, but hardening of the pickup roller is by far (like
50:1) the most common cause of poor feeding. But yes, you should
definitely check for paper waste/debris in the tray & feed mech.

"Reconditioning" the roller is usually good only for troubleshooting
purposes and never lasts long-term.

I used to recondition pickup rollers for printers & fax machines on
client machines with acetone on a cloth, & it usually got at least
another year or two out of the rollers.
(BTW: keep the acetone away from the plastic parts, as it'll eat them.)

A new roller for that tray runs
about $10, a worthwhile investment if everything else is in good
working order.

True, but they're a pain to fit on most HP's.

I just use tap water and a nice abrasive cheap paper
towel.

That'll mostly work, but only for a week or two, IME.

--
W
. | ,. w , "Some people are alive only because
\|/ \|/ it is illegal to kill them." Perna condita delenda est
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