Kernel KN-5000C Manual page 71

calibration still fails, it may be caused by uncleanness in the handle or loss
of light source. Please clean the handle according to section 5.3 and
calibrate again. If the calibration still fails, the treatment handle needs to
be replaced. Please contact the supplier or manufacturer in time to avoid
affecting the normal use.
4.3.5 Mode switch
Click "Mode Switch" on the main interface to switch between the
free treatment mode and the user treatment mode. The recording for the
free treatment will not be saved by the equipment.
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