Could be master board (pwb-a) or power supply unit (pu-1) or something that the motor turns is locked up try to you turn the motor by hand whil it is installed in the machine if you cant turn it by hand something is locked up
Testimonial: "yes this is right ! i figer out the problem - it was in development unit! tNx"
Error code 'C0000' = Main Motor M1 malfunction.
Reset Procedure= Turn OFF and ON the power switch.
Relevant Electrical components are, Main Motor M1, Printer control board, *PRCB*
Power supply unit, *PRSU*
Operations>
1-Check M1 Motor proper connection and correct as necessary.
2-Check M1 for correct drive coupling and correct as necessary.
3-M1 operation check.
4-Change Printer control board.
5-Change Power supply unit.
6-Check developer tank gears.
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