LG BL450Y 22" Desktop Monitor (White) - Manual (Page 17)

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Settings > picture Description
picture reset Do you want to reset your settings?
No Cancel the select.
Yes returns to the default settings.
NoTE
• This is subsidiary for color weakness user. Therefore if you feel uncomfortable with the screen, please turn off this function.
• This function can’t distinguish some colors in some images.
Sound
Settings > Sound Description
Volume To adjust the Volume of headphone or speaker.