HP P19b G4 Maintenance And Service Manual page 27

Table 4-2: Solving common problems
Problem Possible cause
Screen is blank or Power cord is disconnected.
video is flashing.
Monitor is off.
Video cable is improperly connected.
System is in Sleep mode.
Video card is incompatible.
Image appears Brightness is too low.
blurred,
indistinct, or too
dark.
Check Video Cable Monitor video cable is disconnected.
is displayed on
screen.
Input Signal Out Video resolution and/or refresh rate are set higher
of Range is than what the monitor supports.
displayed on
screen.
The monitor is The monitor's power saving control is disabled.
off, but it did not
seem to enter
into Sleep mode.
On-Screen Menus The monitor's OSD lock function is enabled.
are Locked is
displayed.
Power Button is The monitor's power button is locked.
Locked is
Displayed
Solution
Connect the power cord.
Power the power button.
NOTE: If pressing the Power
button has no effect, press
and hold the power button
for 10 seconds to disable the
Power button lockout
feature.
Connect the video cable
properly.
Press any key on the
keyboard or move the
mouse to exit 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.
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