C0500 Code in Dialta 3010

Question

I Got new Fuser unit from Minolta installed and turn on the machine Got Code C0500 Tried to reset from
1- a small hole on the side of control panel
2- By pressing C and ON-OFF-ON
3-by a reset switch on the main board
4-by opening the right door and then wait for ABORT page then press 3 and then wait to have it reset from trouble reset from the screen after trouble reset but comes with same code C0500.
5-Please note that ( i) Even I have tried Memory reset (ii) Administrator Initialization.
Shahid