HP Z25xs G3 - Testing and Troubleshooting; Function Testing Procedures; Common Issues and Solutions

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Function test
After repair, be sure to confirm that all functions are working.
Support and troubleshooting
The following table lists possible issues, the possible cause of each issue, and the
recommended solutions.
Monitor is off.
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.
Video cable is improperly
connected.
Connect the video cable properly. For more information,
see Connecting the cables on page 9.
System is in Auto-Sleep Mode.
Press any key on the keyboard or move the
mouse to inactivate the screen blanking utility.
Video card is incompatible.
Open the OSD menu and select the Input menu. Set
Auto- Switch Input to Off and manually select the
input.
or
Replace the video card or connect the video cable to one
of the computer’s on-board video sources.
Function test
After repair, be sure to confirm that all functions are working.
Table 4-1: Function test
Te
st item
Operating description
Tool used
HDMI test
Confirm whether image displays and sound plays
correctly on the monitor.
Computer or DVD player
DP test
Confirm whether image displays and sound plays
correctly on the monitor.
Computer or DVD player
Audio test
Change volume and balance to confirm whether
volume is smooth and loud enough.
Speaker
Table 4-1: Function test
Test item
Operating description
Tool used
HDMI test
Confirm whether image displays and sound plays
correctly on the monitor.
Computer or DVD
player
DP test
Confirm whether image displays and sound plays
correctly on the monitor.
Computer or DVD
player
USB-C test
Confirm whether image displays and sound plays
correctly on the monitor
Computer or USB-C
player
USB test
Confirm whether image displays and sound plays
correctly on the monitor
Computer or USB-C
player
Table 3-1 Common issues and solutions
Issues
Possible cause
Solution
Screen is blank or
video is blinking.
Power cord is disconnected.
Connect the power cord.
Image appears
blurred, indistinct,
or too dark.
Brightness setting is too low.
Open the OSD menu, and select Brightness to adjust the
brightness scale as needed.