Code 623: DESIGNATED SNo. NOT FOUND
Issue Description & Safety Warning
The Mazak Mazatrol Matrix CNC has triggered a critical DESIGNATED SNo. NOT FOUND 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
Type of error: B — Registered data (the program or tool data includes an error) Stopped status: I — Reset stop Clearing procedure: O — Eliminate cause -> press reset key Display colour: Red Cause: The tool sequence that has been designated as the restart position is not present in the unit of the specified work number; two or more lines of tool sequence data are present in the line-machining chamfering unit. Action: Review the machining program and designate the correct tool sequence number.
Source: Mazak Mazatrol Matrix — Parameter List, M-Codes, Alarm Manual (Section 3 Alarm)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Mazak Mazatrol Matrix CNC Alarms
Mazak controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code 623 on the Mazatrol Matrix CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Mazak's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 714 Mazak Mazatrol Matrix CNC codes.
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