HP M27m Maintenance And Service Manual page 24

Image appears
blurred, indistinct,
or too dark.
Check Video Cable
is displayed on
screen.
Input Signal Out
of Range is
displayed on
screen.
The monitor is off,
but it did not seem
to enter into Sleep
mode.
On-Screen Menus
are Locked is
displayed.
Power Button is
Locked is
Displayed
22
Video card is incompatible.
Brightness is too low.
Monitor video cable is disconnected.
Video resolution and/or refresh rate are set higher
than what the monitor supports.
The monitor's power saving control is disabled.
The monitor's OSD lock function is enabled.
The monitor's power button is locked.
Sleep mode.
Open the OSD menu and
select the Input Control menu.
Set Auto-Switch Input to Off
and manually select the input
Open the OSD menu and
select Brightness to adjust the
brightness scale as needed.
Connect the appropriate video
signal cable between the
computer and monitor. Be
sure that the computer power
is off while you connect the
video cable.
Change the settings to a
supported setting.
Open the OSD menu and
select Power Control > Auto-
Sleep Mode and set auto-sleep
to On.
Press and hold the Menu
button on the front bezel to
10 seconds to disable the
OSD lockout function.
Press and hold the power
button for 10 seconds to
disable the power button lock
function.