Code 701953: Protective equipment not OK (background magazine)
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical Protective equipment not OK (background magazine) 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
The protective equipment of the background magazine is not in order. PLC input signal "Protective equipment OK (background magazine)" is not registered. It is not possible to execute any functions of the tool loader. 1. Close the protective door of the background magazine. 2. Press one of the following keys: [Lock/unlock background magazine protective door] [FEED START] [CYCLE START] Protective door is locked. 3. Check actuation for lock background magazine protective door and the PLC input signal "Protective equipment OK (background magazine)".
Source: CHIRON Error Message Overview, all series (Siemens control, V2.0.6, 2012)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Chiron Siemens-Control CNC Alarms
Chiron controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code 701953 on the Siemens-Control CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Chiron's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 545 Chiron Siemens-Control CNC codes.
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