Casio ClassPad 300 PLUS - Manual (Page 689)

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(3) Adjust display contrast.
To do this: Tap this button:
Make the display lighter
Make the display darker
Return contrast to its initial factory default setting Initial
• Tapping and holding or continually performs the applicable operation until you
release the button.
(4) To close the Contrast dialog box, tap [Set].
15-5 Adjusting Display Contrast
Use the following procedure to display the Contrast dialog box and adjust display contrast.
u ClassPad Operation
(1) On the application menu, tap Y.
• This starts up the System application.
(2) Tap Z to display the Contrast dialog box.
15-5-1
Adjusting Display Contrast