Samsung 152MP - Manual (Page 31)

Adjusting Your LCD Monitor - User Controls
User's Guide T 31
4. Channel
When OSD is not on the screen, push the + CH / - CH button to select
channel number.
1. Push the button to decrease the channel number.
2. Push the button to increase the channel number.
This function is available in TV or PC + TV (PIP) mode only. You need to connect a TV tuner box
(option) to make PC+TV mode appear in TV mode or PIP mode.