Initial SettingsSpeaker volume *PressSP-PHONE. Press Up or Down.While on-hook or during a conversationHandset/Headset volume *Press Up or Down.While using the handset or headsetRinger volume/Backlight illuminationSPSP-PHONEDisplay contrast *Press Left or Right.KX-T7730/7731/7735/7736Slide the lever of the RINGER Volume Selector andBACKLIGHT Illumination Selector to the desired setting.RINGER* The above settings may return to defaultsettings if the telephone line cord isdisconnected, or the main unit's power isinterrupted.2 01BACKLIGHT– 10 –BACKLIGHT SW POSITION 2 1 0LCD backlight HIGH LOW OFFDIALING BUTTONS backlightAUTO: The backlight shines only during operation.AUTO AUTO OFF