User Guide for Toshiba 42XV545U / 46XV545U / 52XV545U
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From the Video menu, press B or b to highlight the...
TheaterLock field, press c and B b to select On...
and press T......
The TheaterLock™ feature allows you to “lock” all items that affect the picture mode setting...In other words, those settings that when adjusted cause the Mode setting to automatically change to “Preference” will be grayed out and unavailable when the TheaterLock setting is set to “On...Items that do not influence Mode status will not be affected e.g., Noise Reduction, Game Mode, etc......
To turn off TheaterLock...
will also be displayed in all Video menu windows where items are disabled......
When TheaterLock is set to On, a lock icon...
To turn on TheaterLock...
Select Off in step 1 above......
Yes,” the HDMI 1 Audio setting is set to “Digital” and is grayed out in the menu...Also see item 4 on page 11 and “Setting the PC Audio” on page 58...
