HP ProDisplay P223a User Guide - Page 22

Support and troubleshooting, Solving common problems

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3 Support and troubleshooting Solving common problems The following table lists possible problems, the possible cause of each problem, and the recommended solutions. Problem Possible Cause Solution Screen is blank or video is flashing. Power cord is disconnected. Connect the power cord. Monitor is off. Press the front bezel 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. Video cable is improperly connected. Connect the video cable properly. See Connecting the cables on page 5 for more information. System is in sleep mode. Press any key on the keyboard or move the mouse to exit sleep mode. Video card is incompatible. Open the OSD menu and select the Input Control menu. Set Auto-Switch Input to Off and manually select the input. Image appears blurred, indistinct, or too dark. Brightness is too low. Open the OSD menu and select Brightness to adjust the brightness scale as needed. Check Video Cable is displayed on screen. Monitor video cable is disconnected. Connect the appropriate video cable between the computer and monitor. Be sure that the computer power is off while you connect the video cable. Input Signal Out of Range is displayed on screen. Video resolution and/or refresh rate are set higher than what the monitor supports. Change the settings to a supported setting. See Preset display resolutions on page 23 for more information. The monitor is off but it did not seem to enter into sleep mode. The monitor's power saving control is disabled. Open the OSD menu and select Power Control > Auto-Sleep Mode and set auto-sleep to On. OSD Lockout is displayed. The monitor's OSD Lockout function is Press and hold the Menu button on the front bezel for 10 enabled. seconds to disable the OSD Lockout function. Power Button Lockout is displayed. The monitor's Power Button Lockout Press and hold the power button for 10 seconds to disable the feature is enabled. Power Button Lockout feature. No speaker volume or low speaker volume. (select products only) Volume is turned down in the OSD. Open the OSD and select Management > Audio and adjust the volume scale. Headphones are plugged in. Unplug the headphones. The speakers are disabled when the headphones are plugged in. 16 Chapter 3 Support and troubleshooting

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3
Support and troubleshooting
Solving common problems
The following table lists possible problems, the possible cause of each problem, and the recommended
solutions.
Problem
Possible Cause
Solution
Screen is blank or video is
flashing.
Power cord is disconnected.
Connect the power cord.
Monitor is off.
Press the front bezel 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.
Video cable is improperly connected.
Connect the video cable properly. See
Connecting the cables
on page
5
for more information.
System is in sleep mode.
Press any key on the keyboard or move the mouse to exit sleep
mode.
Video card is incompatible.
Open the OSD menu and select the
Input Control
menu.
Set
Auto-Switch Input
to
Off
and manually select the input.
Image appears blurred,
indistinct, or too dark.
Brightness is too low.
Open the OSD menu and select
Brightness
to adjust the
brightness scale as needed.
Check Video Cable
is
displayed on screen.
Monitor video cable is disconnected.
Connect the appropriate video cable between the computer
and monitor. Be sure that the computer power is off while you
connect the video cable.
Input Signal Out of Range
is displayed on screen.
Video resolution and/or refresh rate
are set higher than what the monitor
supports.
Change the settings to a supported setting. See
Preset display
resolutions
on page
23
for more information.
The monitor is off but it did
not seem to enter into sleep
mode.
The monitor's power saving control is
disabled.
Open the OSD menu and select
Power Control
>
Auto-Sleep
Mode
and set auto-sleep to
On
.
OSD Lockout
is displayed.
The monitor's OSD Lockout function is
enabled.
Press and hold the Menu button on the front bezel for 10
seconds to disable the OSD Lockout function.
Power Button Lockout
is
displayed.
The monitor's Power Button Lockout
feature is enabled.
Press and hold the power button for 10 seconds to disable the
Power Button Lockout feature.
No speaker volume or low
speaker volume. (select
products only)
Volume is turned down in the OSD.
Open the OSD and select
Management
>
Audio
and adjust the
volume scale.
Headphones are plugged in.
Unplug the headphones. The speakers are disabled when the
headphones are plugged in.
16
Chapter 3
Support and troubleshooting