HP Z24m G3 - Function test; Function testing; Support and troubleshooting; Troubleshooting common problems

25
3) Place the new component on the PCB. Be sure that it matches the PCB footprint.
4) Solder the new component.
Function test
After repair, be sure to confirm that all functions are working.
Table 4-1: Function test
Test item
Operating description
Tool used
HDMI test
Confirm whether image displays
Computer or DVD player
DP test
Confirm whether image displays
Computer or DVD player
USB-C Alt-Mode
Confirm whether image displays and sound
plays correctly on the monitor.
Computer or Notebook
USB-C PD Function
Confirm PDO/Charging working normally.
Notebook
USB Hub Test
Confirm USB function of 2-USB Type-A and 1-
USB Type-C working normally.
Computer or Notebook
Audio test
Change volume and balance to confirm
whether volume is smooth and loud enough.
Sound bar or Earphone
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
Possible cause
Solution
Screen is blank or
video is flashing.
Power cord is disconnected.
Connect the power cord.
Monitor is turned off.
Power the power button.
NOTE: If pressing the Power