Hi good day i am checking cnc mill MH500C with control CNC 432, i obtain the errors M01 and I01,

If 19RSS1 = 0 , error M01 appears (checksum fault MC memory RAM)
if 19RSS1 = 1 , screen constant appears direct, and error I01 show it (Interface has no voltage supply).

the battery has 12.5v, and pcb CentProdMod was changed (same model of pcb for different memorys series), before a chess screen appeared.

I intend change the constant but no change, Are these some suggestions?,
should i change the battery, o how change the parameters?

Renato Masias