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FANUC Alarm SRVO-263 — SERVO Chain 2 (SVDISC) abnormal

FANUC SRVO-263 (“SERVO Chain 2 (SVDISC) abnormal”): A weld fault occurred on the E-STOP unit. First check: Repair the MON3 circuit on the E-STOP unit.

Updated 2026-09-17 · LogrobotLM reference

Description

A weld fault occurred on the E-STOP unit.

Remedy

Repair the MON3 circuit on the E-STOP unit.

Related codes

SRVO-261SERVO Chain 2 (NTED) abnormalSRVO-262SERVO Chain 1 (SVDISC) abnormalSRVO-264SYSTEM E.STOP circuit abnormal 1SRVO-265SERVO E.STOP circuit abnormal 2

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →