Optoma 1080p DLP - Manual (Page 29)

English
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User Controls
Language
Choose the multilingual OSD menu. Press or into the sub
menu and then use the or key to select your preferred lan-
guage. Press “Select (Enter)” to finalize the selection.
Input Source
Enable input sources. Press or into the next menu as below and
then use or to select. Press “Select (Enter)” to finalize the selec-
tion. The projector will not search inputs that are de-selected.
Source Lock
When this function is turned off, the projector will search for other
signals if the current input signal is lost. When this function is
turned on, it will search for a specified connection port.
Setup