Canon DR5020 E21 error
Canon Scanners are reliable. Canon has chosen error codes logically, 'P' os Paper related, 'C' os cover related, 'E' is Engineering Support related.
E21 is Document Motor Trouble. E2 is Separation Motor Trouble. Check of connection and load or you may to replace motor. Try connecting the motor to a different location and if the error is same, probably there is no motor fault, if it changes then it definitely motor fault. As a last thing you may need to change the PCB on the side.
S. Mohan, Chennai, India
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