Samsung SPP4251 Owner's Instructions Manual page 84

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If no signaJ is being received or the signaJ is very weak, a bJue screen automaticaJJy repJaces

the noisy picture background_ If you wish to continue viewing the poor picture, you must set

the "BJue Screen" mode to "Off".

Press the MENU button. Press the A or T button to

seiect "Setup", then press the ENTERbutton.

Press the A or T button to seJect "MisceJJaneous",

then press the ENTER button.

Press the A or T button to seJect "BJue Screen",

Press the ENTER button.

Press the _ or _' button to change the setting_

(On or Off).

Blue S_reen isd]spl_,,ed when there isn0signal frommrexternal

devk÷ intheExternal Mode, regardless oftheBlue S_reen S÷H]ng.