LG 50PK750 Owner's Manual page 21

Digital Broadcasting System Captions
Choose the language you want the DTV/Cable DTV Captions to appear in.
Other Languages can be chosen for digital sources only if they are included on the program.
This function in only available when Caption Mode is set On.
or Select OPTION.
Select Caption.
Select On.
Select CCl-4, Text1-4, or Service1 - 6.
Return to the previous menu.
Return to TV viewing.
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