Error 23 - Power Supply Irregularity / Speed Signal but no Generator Power - Fatal
Cause:
The LCB recognizes a valid speed signal from the generator, yet does not have sufficient power from
it. Indicative of a LCB power supply failure.
Service:
• The most likely suspect is the LCB. Check the LEDs on the board to verify lack of generator power.
Replace controller.
• Check the three phase connections at the generator connector and that connector’s solid mating to
the controller.
Page 67 of 202
Cybex 772A, 772AT Arc Trainer Part Number
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