Function Test; Support And Troubleshooting - HP X27qc Maintenance And Service Manual

Function test

After repair, be sure to confirm that all functions are working.
Table 4-1: Function test
Test item Te
Function test
st item
HDMI test
HDMI test
DP test
DP test
Table 4-1: Function test
Audio test
Audio test

Support and troubleshooting

The following table lists possible problems, the possible cause or each problem, and the recommended
solutions.
Table 3-1: Solving common problems
Problem
Screen is blank or video is
flashing.
Image appears blurred,
indistinct, or too dark.
"Input Signal Not
Found" is displayed on
the screen
"Input Signal Out of Range"
is displayed on the screen
The monitor is off but it did
not seem to enter in to sleep
mode.
"OSD Lockout" is displayed The monitor's OSD Lockout function
"Power Button Lockout" is
displayed.
The desktop computer does
not turn on.
20
Operating description Operating description
Confirm whether image displays and sound plays
After repair, be sure to confirm that all functions are working.
correctly on the monitor.
Confirm whether image displays and sound plays
correctly on the monitor.
Confirm whether image displays and sound plays
correctly on the monitor.
Confirm whether image displays and sound plays
correctly on the monitor.
Change volume and balance to confirm whether
volume is smooth and loud enough.
Change volume and balance to confirm whether
volume is smooth and loud enough.
Possible cause
Power cord is disconnected.
The monitor is turned off. .
Video cable is improperly connected. Connect the video cable properly. See Connecting the cables
System is in sleep mode
Video card is incompatible
Brightness is too low.
The monitor video cable is
disconnected.
Video resolution and/or refresh rate
are set higher than what the monitor
supports.
Auto-Sleep Mode is not turned on.
is enabled.
The monitor 's Power Button
Lockout function is enabled.
The monitor is turned off.
The monitor is in sleep mode.
The monitor is in Power Saver
mode
Computer or DVD
player
Computer or DVD
player
Speaker
Solution
Connect the power cord.
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.
on page 9 for more information
Press any key on the keyboard or move the mouse to exit
sleep mode.
Open the OSD menu and select the In put 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. See Preset
display resolutions on page 34 for more information.
Open the OSD menu and select Power. Then select Auto-
Sleep Mode and set auto-sleep to On.
Press and hold the Menu button on the front bezelfor10
seconds to disable the OSD Lockout function.
Press and hold the power buttonfor10seconds tod is able
the Power Button Lockout function.
Be sure that the monitor power cord is plugged in to an
AC outlet and press the monitor power button.
Press any key on the keyboard ormove the mouse to exit
sleep mode.
Open the OSD menu, select Power, and then change the
power mode to Performance.
Tool used Tool used
Computer or DVD player
Computer or DVD player
Speaker