Fanuc Fanuc Spindle Alarm 91 (Magnetic Pole Position Count Error — BiS Synchronous Motors) — Causes & Fixes AMR OffsetJJ AutomationJul 31, 2026 Fanuc Spindle Alarm 90 (Unexpected Rotation State — BiS Synchronous Motors) — Causes, Diagnosis & Fixes AMR OffsetJJ AutomationJul 31, 2026 Fanuc Spindle Alarm 89 (Submodule SM Abnormal — BiS Synchronous Motors) — Causes & Fixes BiS MotorJJ AutomationJul 31, 2026 Fanuc Spindle Alarm 65 (Magnetic Pole Detection Error — BiS Synchronous Motors) — Causes, Diagnosis & Fixes BiS MotorJJ AutomationJul 31, 2026 Join Us A short sentence describing what someone will receive by subscribing Your email Subscribe100% free, Unsubscribe any time! Follow us