Code SRVO-337: DCS PRMCHK alarm i, j
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical DCS PRMCHK alarm i, j 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: DCS parameter error is detected. When an image restore is done and "No" is selected for initialize DCS parameter, if the previous DCS parameters are different from what is in the image file, this alarm occurs. Remedy: 1. Do an APPLY of the DCS parameters if an image restore was done. 2. If power down occurred while DCS parameters were being changed, set the DCS parameters again. 3. Load backup files. 4. Replace main board, CPU card, FROM/SRAM module.
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-337 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.
Have a better solution?
Help the industrial community by sharing your repair experience for code SRVO-337.
Need a searchable reference for more Fanuc R-30i Series Robot Controller manuals?
We structure equipment manuals into searchable code, title, cause, solution, safety note, and source-reference data. Send a PDF and example searched codes when you need public pages, private search, or structured exports.
Space reserved for Google AdSense / Industrial Affiliate Links
Monetization target for 2026