A checksum error has been detected for the MP-30 DCC board EPROMs. The checksum is continuously recalculated while the MP is on. This error indicates that the DCC board is no longer functioning reliably.
For more information, see "MP Error Codes".
What you should do:
To clear the error, power the MP down.
Power the MP back up.
If the error reoccurs, contact your Giddings & Lewis service representative.