On-Screen Display - TRIVIEW TLM-1901W Operating Instructions Manual

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