Hello, please some help. I have a Cincinnati Arrow 2 750 with Acramatic 2100 control. It has the servo drivers made by siemens.

The machine was working ok, I recently had a problem with the date and time when the machine was turned on. I just had to change the bios with the correct time and date so the machine can work.
I knew the problem was the batterie, so I replaced the baterie in the 2 mother boards. bad desicion
Now I have an error with the servos drivers can't be detected


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I had read some posts about remove the motherboard form the right , and edit the bios, but I still having the same problem


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The DV5 board has a red led of FAULT

Please some advise
thank you