Function Test; Support And Troubleshooting - HP L7010t Maintenance And Service Manual

Function test

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

Support and troubleshooting

The following table lists possible problems, the possible cause or each problem, and the recommended solutions.
Table 4-2: 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 screen.
Input Signal Out of Range
is displayed on screen.
Operating description
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.
Possible Cause
Power cord is disconnected.
Power button is turned off.
Computer power is turned off.
Video cable is not connected.
System is in sleep mode.
Video card is incompatible.
Brightness is too low.
Monitor video
cable is
disconnected.
No video signal.
Video resolution and/or
refresh rate are set higher
than what the monitor
supports.
Tool used
Computer or DVD player
Computer or DVD player
Computer or D-SUB player
Speaker
Solution
Connect the monitor power cord.
Press the monitor 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.
Turn on power to the computer.
Connect the DisplayPort video cable between the
computer and monitor. Be sure the computer power is off
while you connect the video cable.
Press any key on the keyboard or move the mouse to
exit sleep mode.
Replace the video card or connect the DisplayPort
cable to the computer's onboard DisplayPort.
Open the OSD menu and select Brightness to adjust
the brightness scale as needed.
Connect the DisplayPort video cable between the
computer and monitor. Be sure that the computer power
is off while you connect the video cable.
Be sure the computer has sent out a video signal.
Change the settings to a supported setting.
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