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SP1985
SIC-LSI Faulty (CNC Side, 30i Range)
Fanuc · AC Spindle Motor Alpha i-Beta i Series Parameters
¿Qué significa SP1985 ?
The SIC-LSI (Serial Interface Converter-LSI) on the CNC side for Series 30i (codes SP1985 to SP1987) is faulty. This indicates a hardware error on the CNC's serial communication interface.
Causas comunes
- Malfunctioning SIC-LSI component on the CNC interface board (30i range).
- Defective data lines between the CNC processor and the SIC-LSI.
- Firmware corruption on the CNC's serial interface controller.
- Overheating of the CNC control unit affecting the SIC-LSI.
- Electrical noise on the CNC's internal bus impacting SIC-LSI operation.
Pasos de reparación & Lista de verificación
Haga clic en los pasos para seguir su progreso.
- 1
Check the regulated voltage supplied to the SIC-LSI on the CNC board.
- 2
Use an oscilloscope to monitor the clock and data signals on the SIC-LSI interface.
- 3
Perform a system-level diagnostic test on the CNC controller.
- 4
Ensure proper grounding of the CNC cabinet.
- 5
Attempt to update the CNC system software to the latest stable version.
Datos técnicos verificados. Última actualización: March 2026
Fallas relacionadas
Fuente: Fanuc AC Spindle Motor Alpha i-Beta i Series Parameters