Ricoh mp7502 sc204 error

[edi1907]

Hello friends!
I have a mp7502 machine. When I take print it gives a error and it has written auto reboot has been completed. When I check from sc history, it shows sc204. I changed Polygon mirror motor but the problem continues still. What is your advice for me please?

[MIKON]

Try this remove the drum unit.Pull on the grounding spring on the rear of the drum unit to extend it a little.Then clean the frame where the spring contacts the frame,

[Phil B.]

Hello friends!
I have a mp7502 machine. When I take print it gives a error and it has written auto reboot has been completed. When I check from sc history, it shows sc204. I changed Polygon mirror motor but the problem continues still. What is your advice for me please?

this thread might help you:

ricoh mp6002 sc 204

[farhad]

this error means you macine cannot process signal on potantial sensor and potantial sensor processed referans on drum
OK?
you can change drum to fix this problem