This may take some diagnosis. At first read, it seems that the UFB board behind that switch panel is not talking to the XDI board. But it seems that the machine is booting correctly and that the 24 VDC string with limit switches is ok.
When you press the reset switch, does the machine reboot? If yes, then this means that logic voltages are good and ERS (with BOSS software) is talking to the LSI-11 (mother board). The RCK is a clock card. The XDI is best described as a Input/output board. Check all connectors. Note that the UFP is VERY static sensitive. You can also try pulling each logic board out, making sure it is clean and cleaning the edge connector with a soft pink eraser. Then put it back in firmly.
Is there any numbers displayed when the machine boots? Or are they all zeros? Is the ERR light lit? There is the outside chance that the tube that the wires go through to the control may have cut a wire. Especially if you swing the arm back and forth.
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