How to unlock buttons?
This is an old monitor; using it as a second display for my Mac. Can't change contrast or brightness, also cannot use power button. Current contrast & brightness need to be adjusted.
Computers & Internet - Princeton Digital - VL - VL173 Monitor
Answers & Comments
Not sure if this is exactly the same as yours your model hard to find I had 2 similar monitors at previous employer and they both operated the same way Taking a Look 1. Power Switch Pressing this button turns the display system power on or off. 2. Menu/Select ? Pressing this button pops up the OSD menus on the screen, and used to select ("Up" direction) the OSD control options on the screen. ? This button is used to select ("Down" direction) the OSD control options on 3. Select the screen. 4. + This button is used to increase the value of the selected OSD control option. 5. 0 This button is used to decrease the value of the selected OSD control option. Quick Adjustment Function When the OSD Menu is not active, the following functions are available for the quick adjustment. Pressing ? button once pops up the OSD Function Main Menu . Pressing ? button once pops up the small Brightness icon. Use +or 0button to adjust the Brightness level. Pressing + button once pops up the small Volume icon. Use +or 0 button to adjust the Volume level.
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