Guys, I need some help.
During yesterday's "lights out" operation of my LB15 (OSP5000LG), my lathe made one part normal and half of a second part. Then it died.
Every light on the panel is lit and no buttons work.
After reboot, it doesn't go through its normal checklist. It has a screen that I have never seen before. It says:
2001 OPERATIONAL PANEL READY ERROR 00000001
SBP MONITOR
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In the book, it says "The operational panel ready flag is not turned on."

Defective operational panel?
Defective comm line between CRP and the operation panel?

Check wiring and connections...or replace the operational panel, the CRP board or the Comm cables.


What does this mean??? Have any of you ever fought this error? Is there a procedure that will determine which of the three possibilities is the faulty part? Any help would be greatly appreciated.