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2) Lift the CN154、CN153 connector from the circuit board.
3) Place the new component on the circuit board. Be sure that it matches the footprint.
4) Solder the new component.
Function test
After repair, be sure to confirm that all functions are working.
Support and troubleshooting
The following table lists possible problems, the possible cause or each problem, and the recommended
solutions.
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
Audio test Change volume and balance to confirm whether
volume is smooth and loud enough.
Speaker
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 off. Power the 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.
System is in Auto-Sleep Mode. Press any key on the
keyboard or move the
mouse to inactivate the
screen blanking utility.