I am receiving an error of canon ir 1210- rec.

On the slide there is a handle. This releases the top reader port of the copier, move it to the left. Raise right side cover and remove the drum cartridge unit. You should see the jammed paper there, at the right lower access door, or in the fuser where the paper should come out. Just reverse the procedure to reset the jam. If the copier still indicates the jam then it must be in the fuser. You will have to have a technician remove the fuser assembly from the copier and take apart the unit to remove the jam. Hope this helps.

after yoy slide, open up the cover and then you will see the cartridge (black color) then you pull out the cartridge (there is a holder steel).
and you will see the paper jammed.
take it all, do not be left one bit.
and then replace all like a before.

Hi With this copier I find the paper jam is always in the fuser area. Its very hard to get to. You need a a flash light and tweezers to get it. You need to look where the paper comes out. Thank you, Steven 805-520-3003

There may still be a small sliver of paper somewhere along the paper path. It only takes one small piece to interfere with the mechanism that detects jams and causes the copier to stop working. Since the copier gives you an indication of where the jam is occurring, I would focus my attention in that area, removing trays, using a small flashlight to get a really good look inside.

you have a stuck or broken sensor

the paper jam is more than likely in the fuser assembly. unfortunately you will need a service tech to come out and fix that issue.

in service mode manually recheck all paper transport sensors...

make sure that the exit sensor is realese down.generaly u ca check the sensors not to have pull out 

Slide the uper unit to the left by pulling handle on the left,open cover on the right,remove drum unit by pulling on the handle,remove paperjam.

We have a D780, which is probably very similar to your unit. Have you removed your toner cartridge and inspected to see if any paper is in the paper path? 95% of the time that is where the paper jam is.