Sorry to dig out the old thread....
I have a similar issue.
My device is Ricoh MPC305SPF.
It has an error of SC544-00. I have replaced a "USED" fusing unit. But the error still displaying. And I have tried the 5810 reset.
But the error still here.
May I know what should I do? I see the previous thread is taking about reset fuse. But I cannot find a reset fuse to purchase....
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