Industrial Robot Troubleshooting Database

Search robot alarm codes, servo faults, communication issues, safety faults, mastering problems, welding robot issues, vision system faults, and real-world field-proven fixes.

FANUC Alarm Codes

Goal: Build the most practical robot troubleshooting database available. Every solution includes alarm descriptions, diagnostic procedures, common causes, and field-verified fixes from real production environments.

Start With Your Robot Brand

FANUC

SRVO alarms, safety faults, mastering issues, servo problems, DCS faults, and field fixes.

Open FANUC Database SRVO-018

ABB

IRC5 faults, drive faults, motion supervision alarms, communication issues.

Coming Soon

Yaskawa

Motoman alarms, servo faults, encoder issues, safety faults.

Coming Soon

Most Common Robot Problems

Robot Will Not Move

Servo alarms
Safety faults
E-stop active
DCS restrictions
Fence open

Robot Lost Position

Battery alarms
BZAL faults
Mastering lost
Pulse coder issues

Robot Stops Randomly

Intermittent wiring
Dress package failures
Communication faults
Safety interruptions

Welding Robot Problems

Weld gun cables
Water intrusion
Gun dress package damage
Power cable faults

Recommended Troubleshooting Workflow

1. Record the exact alarm code and full alarm text.

2. Record the group and axis.

3. Determine when the fault occurs: power-up, jogging, automatic cycle, welding, or random.

4. Determine what changed recently.

5. Check cables, connectors, and dress package before replacing major components.

6. Follow OEM procedures for electrical testing and verification.

Featured Troubleshooting Pages

SRVO-018 Brake Abnormal

Includes a real production case where a contaminated weld gun power cable caused a Group 1 Axis 2 brake abnormal fault while simply jogging the robot.

Read Article

SRVO-037 IMSTP

External stop inputs, safety circuits, and PLC interactions.

Coming Soon

SRVO-062 BZAL

Battery alarms, mastering issues, and pulse coder recovery.

Coming Soon