HEIDENHAIN TNC 306 Technical Manual - Manual (Page 15)

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TNC 416/TNC 406/TNC 306 Software 3/2000
Danger of electrical shock!
Unplug the power cord before opening the housing.
Danger to internal components!
When handling components that can be damaged by electrostatic discharge (ESD),
observe the safety recommendations in DIN EN 100 015. Use only antistatic
packaging material. Be sure that the work station and the technician are properly
grounded during installation.