TRIVIEW TLM-1901W, Operating Instructions Manual

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8
4. On-screen display (OSD)
Hot Key
：
Volume
：
Press – or + button to pop up the volume function and then press – or +
button to adjust the volume; Press MENU or CH button to exit OSD menu.
Lock Key
：
Press and hold CH & MENU buttons simultaneously then press and hold
POWER button for 2.5sec to lock all keys.
Unlock Key ： Press and hold CH & MENU buttons simultaneously then press and hold
POWER button for 2.5sec to unlock all keys.