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Appendix A - Adjustment of the touch display
If the display responses not or wrong to a button, a display adjustment is necessary.
While switching on power, press display until
the notice
"touch adjustment ?
don't touch for normal use"
appears.
Left off the display immediately!
Press the display immediately again for more
than one second.
A blinking dot appears at top left.
Press the blinking dot top left.
A blinking dot appears at bottom right.
Press the blinking dot bottom right.
The adjustment is finished.