Casio PX-780 - Calibrating Touch Screen Alignment; Adjusting Display Contrast and Brightness

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6-2. Calibrating Touch Screen Alignment
 Whenever you feel that touch screen response is poor or that the operations being executed do not
matchthelocationyouaretappingonthetouchscreen,performthefollowingoperationstocalibratethe
alignmentofthetouchscreen.
• Pressthe“Fn”keyandthenmakesurethat“F”appearsinthelowerrightcornerofthescreen.Ifthe“F”
appears,pressthe“4”key.
* ThefollowingscreencanalsobedisplayedbynavigatingtoStart→Settings→StylusandCalibration
tab.
• Pressthestylusagainstthecenterofeachtargetmark(totalofvemarks)asindicatedonthescreen.
Thescreenshownbelowappearsafteryoupressstylusagainstthetargetatvedifferentlocations.
• PresstheENTERkeyortapanywhereonthetouchscreen.
Adjusting Display Contrast
 Performthefollowingstepstoadjustdisplaycontrasttomakedisplaycolorsmorevividandeasiertosee.
• Pressthe“Fn”keyandthenmakesurethat“F”appearsinthelowerrightcornerofthescreen.Ifthe“F”
appears,pressthe“2”keyor“3”key.Pressingthe“2”keyadjustsformorecontrast,whilepressingthe“3”
keyadjustsforlesscontrast.
* Inordertocontinuetomakeadjustments,pressthe“2”keyor“3”keyafteragainrstpressingthe“Fn”
key.
* Contrastsettingscanalsobemadebyconsecutivelytapping“Brightness”onthecontrolpanel.