Calibrate the key positions of the touch screen if you feel the touch screen key is not responding properly.
Refer to the page 142 of the instruction book of this model for the touch screen calibration.
If the problem persists, make the key position adjustment as follows.
Needle up/down button
1
Touch panel key position adjustment
4
2
3
5
To adjust:
1. Turn the power switch ON while pressing the needle
up/down button to enter the touch panel key position
adjustment mode.
2. Press the "+" sign as it appears on the touch screen
in order of 1 to 5.
3. Be sure that the message "PRESS + marks" changes
to "OK".
Repeat the adjustment procedure from step 1 above
if the message changes to "NG".
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