Diagnosing a Fanuc Alpha Servo Module with a Blank Seven-Segment Display
If the seven segment display is totally BLANK (no dash, nothing) then:
Unplug the JX5, JX1A, JX1B, ENC1, ENC2 and ENC3 cables (that should be all the new style Honda cables).
Make sure the fuse on the front face of the 6096-H304 is good.
Verify the 24v DC input on the bottom two wires of the cable into CX2A.
If the above three conditions are met, and the display does not have a dash then the servo modules needs replacing.
Note: For an Alpha i Servo Module to have a dash on the seven-segment display, the 24 Volts is applied to CXA2B.
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