36 | Operating the Display
Using the OSD lock function
1.
Press the OSD launcher touch key.
1 2
3 4 5
6
7
2.
Touch and hold
for 5 seconds. you can see following select option:
Dell 75 Monitor
C7520QT
Select Option:
The following table describes the touch control icons:
Options
Description
1
OSD menu lock
Use this icon to lock OSD menu function.
2
Power-off button lock
Use this icon to lock power button from powering off.
3
OSD menu and power
button lock
Use this icon to lock OSD menu and power button from
powering off.
4
Built-in Diagnostics
Use this icon to run the built-in diagnostics, see
.
