HP PHOTOSMART C7180-- CARRIAGE JAM MESSAGE--LOOKED CAREFULLY-NO PAPER-WAS ABLE TO MOVE CARRIAGE TO THE LEFT, BUT WOULD NOT MOVE COMPLETELY TO THE RIGHT--MAKES A GRINDING NOISE--ANY IDEAS? TRIED RESET-DIDN'T WORK-NOW ALL INK CARTRIDGES ARE LISTED AS MISSING AFTER COMPLETING THE RESET.

SOURCE: carriage jam issues on hp printer

So sorry to hear that you are having issues with your C4385 printer. HP's All-In-One printers seem to be very touchy when it comes to carriage jams, and mine is no exception. They are usually caused by little bits of paper left over from a previous jam, so you just have to work out where to find them. HP produced a page with diagrams to help people find them. Please click here to access their solution page.

Hope this helps!

SOURCE: Carriage Paper Jam in Photosmart hp c6180 all-in-one-printer

Here's what you do. Take a look at the photo below.
Open the cover of the printer, where the ink cartridges are located. Behind the ink cartridges is the carriage, which is a box that moves side-to-side on a pair of rails. It's the thing that sprays the ink onto the paper.

You have to reach in with your hand and slide this thing to the center. Then, look to the very sides, left and right, for any bits of paper. If you look at the second picture, you can see my finger pointing to a small bit of paper that tore of and got jammed into the side. See the little crumpled bit of paper? It's preventing the carriage from sliding all the way to the right. You could have little bits on the right or left side. I had to reach in with needle-nose pliers to grab the paper bits out, but maybe your fingers are small enough.

Once the little bits of paper were out, I was back in business. Good luck!

SOURCE: carriage jam on HP photosmart 3310 all in one

Here is the actual solution from the HP website for a carriage jam...click on the link:

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00786043&tmp_track_link=ot_faqs/top_issues/en_us/c00786043/loc:12&lc=en&dlc=en&cc=us&product=439491

SOURCE: printing error oxc18a0101

Try resetting the printer:

1- Turn off power and unplug from power source.
2- Open right side of printer (looking at the front).
3- Disconnect,by pulling gently, both white flat ribbon cables off the main circuit board.
4- Plug in power source and turn printer on. Wait till you get a error message and push "Ok".
5- Unplug power source.
6- Reconnect the flat ribbon cables by aligning and carefully pushing into the conectors on the main circuit board.
7- Plug in power source and turn printer on.

SOURCE: Carriage jam on HP Photosmart D7160. No paper in

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00854650&cc=us&lc=en&dlc=en&product=1156652