HP LaserJet Pro 400 M401DN Laser Printer keeps jamming at cartridge.

This is usually a motor code, turn off, unplug wait 2 to 3 minutes plug in and try, may work good luck

you replace toner cartridge 80 a then ask questions

Clean all of the rubber feeders with alcohol/rubber restorer in the paper path of printer.

I would upgrade the driver first. You can also do a factory refresh which brings the printer back to the original condition. Make sure that you get the ip address off the config page just in case you need to reset the settings.

Chk media specification.
Chk paper pick rollers
Clean paper path sensors & flags if they are dusty.
Avoid refill cartridges.

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Hi, have you tried pinging it, assuming it's networked?

This problem seems to happen with remanned toner cartridges. The link below provides the solution:

http://cincinnatiprinterrepair.com/service-call-of-the-week/50-hp-laserjet-m400-jams

just delete all print from printer and restart printer and computer then try again
happen because some cancellation of print during priting

install a new driver

One of my customers has roughly 100 of these pro 400 in service. Many of the constantly display "Jam in cartridge area" We have found the message is not related to any part of the cartridge area. The exit flag spring in the back of the fuser seems to be lightly wound. Carefully turn the end of the spring that rests on the plastic ( closest to you when looking at it) one full turn over the top of the pivot and re-secure back on the piece of plastic. For safe measure, bend the tip of the spring down the piece of plastic so it won't unwind. Secure the tip with a small amount of glue. We dis this to all of the machines in question and have not had a single problem since