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303
Serial Pulse Coder LED Disconnection (LDAL)
Fanuc · Alpha i series AC Servo Motor
¿Qué significa 303 ?
An LED disconnection (LDAL) was detected within the serial pulse coder. This indicates an internal failure of the pulse coder's light-emitting diode, essential for its operation.
Causas comunes
- Internal LED disconnection within the serial pulse coder.
Pasos de reparación & Lista de verificación
Haga clic en los pasos para seguir su progreso.
- 1
Turn the main power OFF.
- 2
If this alarm recurs immediately when power is reapplied, replace the motor (which contains the pulse coder).
Datos técnicos verificados. Última actualización: March 2026
Fallas relacionadas
Fuente: Fanuc Alpha i series AC Servo Motor