AVer System Contrll Pro User Manual (NV version) - Manual (Page 86)

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3.4.5 Adjusting the Contrast of LCD Screen
6. At main menu screen, press the
button to enter Controller setup screen.
7. Press button to enter LCD setup
screen.
8. Press button to enter the
Contrast setup screen.
9. Press and button to
adjust the brightness.
10. Press button to confirm the
setting. To cancel, press button.