Operating your monitor
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When Menu and Power buttons is in lock state, hold the Exit key (button 4) for 4
seconds to enter the unlock menu.
And then choose and apply to the unlock icon
to release the Menu and Power
buttons lock.
OSD warning messages
When the monitor does not support a particular resolution mode, the following
message is displayed:
The current input timing is not supported by the monitor display.
Please change your input timing to
2560x1440, 60Hz
or any other
monitor listed timing as per the monitor specifications.
Dell 24 Monitor
This means that the monitor cannot synchronize with the signal that it is receiving
from the computer. See
for the Horizontal and Vertical
frequency ranges addressable by this monitor. Recommended mode is 2560 x
1440.
Before the
DDC/CI
function is disabled, the following message is displayed:
The function of adjusting display setting using PC application will be
disabled.
Do you wish to disable DDC/CI function?
Yes
No
Dell 24 Monitor
P2421DC
When the monitor enters the
Power Save Mode
, the following message appears:
Dell P2418HZ
Dell 24 Monitor
Entering Power Save Mode.
P2421DC
If you press any button other than the power button, the following messages will
appear depending on the selected input:
