Robotics in Manufacturing
SRVO-371

SRVO-371: SVON2 status abnormal

Mirror of SRVO-370 on the second SVON channel - same internal chain fault, same repair-before-reset requirement.

What it means

Mirror of SRVO-370 on the second SVON channel - same internal chain fault, same repair-before-reset requirement.

Common causes

Ranked by what technicians most often find, most likely first.

  1. Failed emergency stop board.

How to fix it

  1. Do not reset this alarm to keep running until the failure is identified and repaired: with one duplicate safety circuit faulty, safety is not guaranteed if the other fails. Work the SRVO-370 remedy: this indicates a failed emergency stop board requiring qualified-technician replacement, followed by the SRVO-230/231 chain-release procedure.

Quick facts

Category
Servo
Affected series
R-30iB; R-30iB Mate; R-30iB Plus; R-30iB Mate Plus
Alarm family
SRVO

Related codes

Verified against FANUC documentation (B-83284EN-1).Last reviewed: 2026-07-09.Editorial process