Code SRVO-105: Door open or E.Stop
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical Door open or E.Stop alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
Cause: 1. The controller door is opened or E.stop signals are detected for a short time. 2. The specification of the teach pendant is not correct compared with the controller. Remedy: 1. Close the controller door, and press RESET. 2. Check the specification of the teach pendant is not correct compared with the controller. For instance, the teach pendant of the RIA/CE specification is used in the controller of non-RIA/CE specification, this alarm might occur. Connect the teach pendant corresponding to the controller. 3. 3. Refer to the Controller Maintenance Manual for more information.
Source: FANUC Robot R-30iA Alarm Code List Operator's Manual
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Fanuc R-30i Series Robot Controller Alarms
Fanuc controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code SRVO-105 on the R-30i Series Robot Controller identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Fanuc's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 6553 Fanuc R-30i Series Robot Controller codes.
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