My printer has stopped working when you turn my printer on it comes up with a error page the error code is c000 and then it does not let you go any where from that

I moved you to CANON
all printers do that, they love to jam that is there (THING) there bailiwick.
paper dust and chunks land in places not allowed to be there
but guide jams or optical sensors blocked even with paper dust.
If you ask a printer tech this, (mobile) what do the do most the time
they do cleaning endless.
I use shop air here and blow them all out clean as new.
also cleaning up ink smears. using IPA
or use CON_O_AIR , and blow it out.

wash wear clog and repeat. endless printer woe's.

how long did the printer run days,year? before now.????
history matters. (new out of the box?) and this good example.


https://appuals.com/canon-printer-error-c000/

Generic

Error C000 has also been known to be caused by poorly seated or unseated ink tanks. Another method that can be used to try and fix Error C000 is to open the printer door and make sure that all of the printer's ink tanks are properly seated.
Jun 25, 2021

FIX: Resolve Canon Printer Error C000 - Appuals.com

And specific to all Canon Printers.

https://www.google.com/search?q=Canon+Pixma+7240+code+c000

..

Try switching printer off then unplugging the power for 15 or so minutes. If that doesn't work and same error pops up when you turn printer back on, contact Canon.

good luck

Try turning off both the computer AND the printer. When it restarts, the two will reset and recheck and communicate.

Go To Below official Canon Printer Page For Your problem,
http://forums.usa.canon.com/t5/errors/FilterErrorHandlerPage Hope It's resolve all Your Printer Problem,
Or

Still having Problem Then follow Us For Canon Printer Support

It is not the bad cartridges or ink. Something is interferning with the printer internal mechanisms. Try this fix:

Error code C000. Cancel printing, and turn off the machine. Then clear the paper jam or foreign object that is preventing the Print Head Holder from moving.

For more information about the error code C000, can be read here Canon Support and Downloads
You read, the bottom of the page

Hi, try these two links, they might be of help. http://canoncanada.custhelp.com/app/answers/detail/a_id/11015/~/lcd-error%3A-error-c000
and
http://fix-your-printer.blogspot.com/2011/04/how-to-solve-error-c000-on-canon-pixma.html

The C000 error is due to an ink cartridge not being seated properly, remove all the of ink cartridges and reseat each one in turn. Turn the printer off and then back on again and see if the code goes away.

does anyone know why error C000 keeps coming out on pixma mx860