Ricoh Sp c811 have a sc 548

[maikel safwt]

Ricoh Sp c811 have a sc548 i tried to change everything: Fuser,IH inverter board,I/O board ,interface board, Power Board , Fuser motor
and no response .

[mikadonovan]

That is a level "A" code. It must be reset using SP 5810.

[maikel safwt]

I did it in every step I did

[sandmanmac]

SC 548	Fuser unit rotation error - check condition of star wheel actuator
SC 548	Fuser unit rotation error - check/clean/replace rotation sensor (SP5-803-34 to check)
SC 548	Fuser unit rotation error - sensor out of holder, reinstall
SC 548	Fuser unit rotation error - sensor bracket bent , check and repair

[turbojetboy]

Ricoh Sp c811 have a sc548 i tried to change everything: Fuser,IH inverter board,I/O board ,interface board, Power Board , Fuser motor
and no response .

Most likely its the sensors upper left side behind small upper cover that detect fuser and ferrite rotation. Replace with the modified types Aw020190. 15 minute job.

[maikel safwt]

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you mean the "C" one in the photo?