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Andy, Elec & Comp pro
Category: Printers
Satisfied Customers: 23538
Experience:  11yr exp, Comp Engg, Internet expert, Web developer, SEO
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My Canon Printer MP640 had paper jammed and I removed it but

Resolved Question:

My Canon Printer MP640 had paper jammed and I removed it but it will not continue when I press OK, it is still displaying ' rear Cover paper is jammed' on the LCD screen.
I have turned everything off overnight and it is still displaying the same problem.
Submitted: 6 years ago.
Category: Printers
Expert:  Andy replied 6 years ago.

This problem can happen because of following reasons :

1. There is some piece of paper / paper clip / sticker stuck inside printer and you are not able to access it. In this case you need to remove all ink cartridges, turn off printer, then turn it upside down and shake it few times. If still not working then you need to open it up as much you can to see if something is stuck

2. The electric sensor which receives signal from the mechanical paper sensor to detect jam has issues. Either there is dust on it or its gone bad and needs replacement. You should first open up the printer and blow air in it (using compressed air can) to remove all dust. If it doesnt work then this repair will cost you much more than buying a new Printer. If its in warranty certainly call Canon.

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