help me - E35 - show code C94

[aalex_bom]

please help me, i have a toshiba E35, today it run but don;t sure,
it problems is photo 3 sheets show C94,
when copier was 1 paper photocopied, fusin still continue to running until turn off, sometime paper jammed at registration roller.
i have service manual
but i don’t know how to do.. help me please.

i try to replace HDD, but only some paper.

thanks for all help me out of a difficulty.