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FanucGeneral Series CNC
920 — Alarm 920 (WATCH DOG OR RAM PARITY / SERVO ALARMS) Diagnostic Tree
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A servo alarm for the 1st to 4th axis (Watchdog alarm condition or a RAM parity error in the servo module/axis control card) has occurred. To resolve the issue, replace the servo control module on the main CPU board, the axis control card (axis/display card), or the master PC board.
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