4-5
4. Troubleshooting
4-1-3. No Video (HDMI - Digital Signal)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the HDMI source
Check the M-star
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
LA22B480Q1
LA26B480Q1, LA32B480Q1
No
Does the digital data appear at R6021~
6028,R6100~R6112,R6012~R6017?
Power Indicator is off.
Lamp on, no video.
No
Check the connection
of HDMI cable?
Check a IC6003.
Change a main PCB ass’y.
Check a IC6003.
Change a main PCB ass’y.
No
Does the digital data appear at output of
output of LVDS Cable?
Check the LVDS cable?
Replace the LCD panel?
Please, Contact Tech support
Yes
Yes
Input a HDMI cable.
Yes
Yes
Yes
2
3
1
Caution
Make sure to disconnect the power before working on the IP board.
www.freeservicemanuals.info
12/9/2016
Published in Heiloo, Holland
Содержание LA22B480Q1
Страница 89: ...1 4 1 Precautions Memo www freeservicemanuals info 12 9 2016 Published in Heiloo Holland ...
Страница 100: ...4 4 4 Troubleshooting WAVEFORMS 1 R G B Output Signal www freeservicemanuals info 12 9 2016 Published in Heiloo Holland ...
Страница 106: ...4 10 4 Troubleshooting WAVEFORMS 4 CVBS Output Signal www freeservicemanuals info 12 9 2016 Published in Heiloo Holland ...
Страница 126: ...6 3 6 Wiring Diagram www freeservicemanuals info 12 9 2016 Published in Heiloo Holland ...
Страница 127: ...6 4 6 Wiring Diagram www freeservicemanuals info 12 9 2016 Published in Heiloo Holland ...