SOURCE: hp psc 1610 printer ... error message alternates between carriage jam and out of paper
i cleaned the clear file strip behind the carriage by rubbing it between my fingers and my printer started working again. before that i had paper jam and carriage jam and it wouldn't do any printing or copying.
SOURCE: HP 3015 Laserjet paper jam error message
The paper is probably jammed between the fuser and the rear cover if you can't see it.
SOURCE: Message shows "Paper jam" but there is no paper jam
try turning off the printer for about 10 sec. to clear its memory and turn it back on.. then print again
SOURCE: HP j4680 all in one printer constant Paper jam message
Based on encouragement from olsnake above, I fixed it easily. It definitely WAS the encoder wheel (a thin clear plastic disk printed
with timing marks) on the left side of the paper-feed roller, as you look at it from the front. This wheel provides motion feedback to the paper feed control software. If the disk is detached/loose, the device thinks the paper feed roller is stuck or impeded, and thus gives the annoying error.
What I did:
1) Remove the scanner assembly (it comes off with a few screws, and is a totally separate unit; The printer works with it completely disconnected (after it complains that the scanner is malfunctioning). Beware that you don't break off the little control panel. Or you can be safe and remove the one screw holding it on, by prying off the 'HP OfficeJet...One" plastic cover.
2) Once you have removed the scanner assembly:
at the left side you will see three white plastic gears meshed together; the farthest one is covered in a circular black
plastic cover. With some care you CAN remove this cover without any additional screwdriver work.
3) in my case (and most others I bet) the thin disk was detached from the gear to which it should be attached. I just shoved it back on, so it was tightly mated to its white gear. You should also ensure that the clear disk goes through the optical sensor at the bottom (mine was).
4) I did not bother to replace that cover, if you can do it, good for you.
5) Test, and reassemble.
This is about the WORST product engineering imaginable. But I have a working printer again!
Clearing paper jams
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