Wasp WPL206 Series User Manual page 18

Note:
* Please calibrate the gap/black mark sensor when changing media.
4. Place the label leading edge onto the
platen roller. (printing side face up)
5. Close the top cover gently and make
sure the cover latches securely.
6. Use "Diagnostic Tool" to set the media
sensor type and calibrate the selected
sensor. (Start the "Diagnostic tool" 
Select the "Printer Configuration" tab 
Click the "Calibrate Sensor" button)
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