Re: HP printer trouble

On Wed, 16 Apr 2025 20:23:59 +0200, "Carlos E.R."
<robin_listas@es.invalid> wrote:

But today it claimed to have a paper jam. I opened the paper drawer, the
back panel, the toner drawer. No paper jam at all. I closed it again,
the printer tried again, and after two tries it continued printing happily.

There are various plastic "paddle" sensors along the paper path that
are used to detect paper jams or misfeeds.  If the rubber paper feed
roller slips slightly when trying to feet a page, the printer will
detect that the paper is "late".  The printer then declares a paper
jam.  If it correctly feeds a few pages, but then jams, my guess would
be the same as the other Jeff's.  You might have lint, dust, clay
paper coating, loose toner, shreded paper, insects, etc that are
causing the rubber rollers to slip on the paper. 

For the CP1515, it's likely that the rubber has been polished smooth
by the slightly abrasive paper.  That will also make the roller slip.
Try removing the rubber part of the roller from the plastic drum and
flipping it over.  That should give the roller a 2nd life.  However,
what works every time is to purchase and install a rebuild kit.  At a
minimum, you need at least the feed roller RM1-4426 and the separation
roller RM1-4425. For example:
<https://www.ebay.com/sch/i.html?_nkw=cp1515%20rebuild%20kit>

I can think of a few uncommon failures that might cause a paper jam
indication.  Try roller cleaning and replacement before we go down the
rabbit hole.

--
Jeff Liebermann                 jeffl@cruzio.com
PO Box 272      http://www.LearnByDestroying.com
Ben Lomond CA 95005-0272
Skype: JeffLiebermann      AE6KS    831-336-2558