Ar-206 printer card pb8 problem

[swagreis]

in model ar-206
i made a change of main board due to a fail in the signal to mirror motor with a new one .
when i finished installtion just turn on the machine the printer screen(PA1) give me a message(SUM CHECK ERROR)
and both online and data indicators lighting on
the printing not working at all but copying is ok
anyone can help!!
thanks

[CopierTechofOmens]

Check you destination settings...