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The error immediately appear when I open that photo copier iR2022i and I cannot do anything else. Please see the below about error message.

Turn the main power switch (on the main unit's right side) OFF and ON again.

If the machine still does not operate normally, contact your service representative with the error code below.

E 000716

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From the Canon iR2030 series Service Manual (which includes the iR2022i), error 716 is "Erroneous communication with optional cassette".

I suggest you pull it out, clean off any electrical contacts you can spot, and shove it back in.

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