Technical Guide

Robot Controller Repair

Robot controller, teach pendant, servo amplifier, and power section support for industrial robots.

Component-Level Diagnosis Warranty Support Production Downtime Focus

Assemblies We Commonly Check

Teach pendant
servo amplifier
power supply
controller CPU
I/O board
brake and safety sections

Frequent Fault Symptoms

Teach pendant dead
axis servo fault
controller boot failure
I/O alarm
communication fault
brake release issue

SES Testing Workflow

Step 1

Controller power check

Step 2

axis drive diagnostics

Step 3

pendant display/touch check

Step 4

I/O simulation

Step 5

safety signal review

Industries Supported

Welding, material handling, painting, assembly, automotive lines, machine tending.

Brands Often Seen

Fanuc, Yaskawa Motoman, ABB, Kuka, Panasonic, Mitsubishi.

SES Automations is an independent repair company. Brand names are used only to identify compatible equipment and service experience.

When to Send the Unit for Diagnosis

Send the unit when the fault repeats after machine-side checks, when there is visible burn damage, when a safety or production-critical machine is down, or when the part is obsolete and replacement lead time is high.

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