Multiplex 610 parity error

My school had a Mazak Multiplex 610 donated to us 6-8 months ago. After finally getting power hooked up, and replacing all the batteries, we finally were able to fire it up. We get partially through the boot up and get the following error.

Parity error
Error at or near $0049497C

sorry about the poor picture
We don't have any documentation for the machine, and are hoping that someone may have some they can share.

Does anyone have an idea what there error may be, and what the address pertains to?

Any help is appreciated.

Thanks in advance for any help.

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