hi,every one. my okuma controller cant work and give a SBER alarm. The red led is light. The following information is display on the screen . Could someone can give me adivce about it ? the"access address=DE000004", indicate which board? the "UCMB2+F" OR "FWMB2" OR "FCP4"? OR MEMERY CARD? thanks very much for your help!

THE SCREEM DISPLAY:
1-1 cpu-alarm bus error (system bus)
bus error status (SBER,SBPAR,CYO,O,PRT,DIA,LOP,ECC)=80
SSW=074D ACCESS ADDRESS=DE000004

D0=DE000000 D1=00200000 D2=00000000 D3=DE000000
D4=00200000 D5=00000001 D6=4D443041 D7=6FBFFFFF
A0=00FE1500 A1=0300EFB4 A2=00FDC800 A3=0000FF7C
A4=00FE1500 A5=9E84F68A A6=00001000 A7=0000FF74

US=73DC88F7 IS=0000FF74 MS=95ED6184 SR=00002708
PC=0300EF84