4-19
4. Troubleshooting
4-1-7. No Video (Component)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the Component source
Check the MSD237HCG.
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
No
Does the component data appear at
CN5005 (Comp1 / Y, Pb, Pr)?
Power indicator LED is off.
Lamp(Backlight) on, no video?
No
Check the component source and
check the connection of
component cables(Y,Pb,Pr)?
Check CN5005
Change the Main Assy
BN94-02990A
Yes
Check IC4010 (Saturn4)
Change the Main Assy
BN94-02990A
No
No
Does the digital data appear at
CN109 (LVDS Data clk)
of LVDS connector?
No
Please, Contact Tech support
Check the LVDS cable?
Replace the LCD panel?
Yes
Input the component
source properly.
Yes
Yes
2
Check a set
in the ‘Stand-by mode’.
5
Caution
Make sure to disconnect the power before working on the IP board.
Содержание LA22B650T6M
Страница 7: ...1 4 1 Precautions Memo ...
Страница 15: ...4 3 4 Troubleshooting ...
Страница 17: ...4 5 4 Troubleshooting ...
Страница 18: ...4 6 4 Troubleshooting WAVEFORMS 1 PC input V sink H sink R G B 2 LVDS output ...
Страница 20: ...4 8 4 Troubleshooting ...
Страница 21: ...4 9 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output ...
Страница 23: ...4 11 4 Troubleshooting ...
Страница 24: ...4 12 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 26: ...4 14 4 Troubleshooting ...
Страница 27: ...4 15 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Страница 29: ...4 17 4 Troubleshooting ...
Страница 30: ...4 18 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 32: ...4 20 4 Troubleshooting ...
Страница 33: ...4 21 4 Troubleshooting WAVEFORMS 5 Compnent_Y Gray scale Pb Pr Color bar 2 LVDS output ...
Страница 35: ...4 23 4 Troubleshooting ...
Страница 36: ...4 24 4 Troubleshooting WAVEFORMS 6 I2C Data 7 Speaker out ...