When the message "**** (*1) Printer error has occurred. Turn off power then back on again. If problem persists, see the manual." is displayed, there may be a problem inside the printer.
(*1): "****" is displayed with alphanumeric one-byte characters.
Example: 5012, etc.
<Solution>
Turn OFF the printer, and unplug the power cord. Reconnect power cord. Then, turn ON the printer again.
If the problem persists, service is required
For support and service options, sign into (or create) your Canon Account from the link below.
My Canon Account..
<Error Code>
5011, 5012, 6500, 6900, 6901, 6910, 6911, 6902, 6930, 6931, 6932, 6933, 6934, 6935, 6936, 6937, 6938, 6940, 6941, 6942, 6943, 6944, 6945, 6946, 6800, 6801, 5400, 6B10, 6C10, 5700, 6A81, 6A80, 6A90, 9000, 5200, 5C00, 5C20, 6C50, 6C10, 6010, C000, 6502