4-23
4. Troubleshooting
4-1-6. No Video_Component (X4)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the Component source
-
Check the chelsea.
-
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
Does the component data appear at
TP - COMP1_Y, COMP1_PB, COMP1_PR
TP - COMP2_Y, COMP2_PB, COMP2_PR
(Comp / Y, Pb, Pr) ?
Does the digital data appear at
TP-, E_TXCLK-,
, O_TXCLK- ?
Yes
Yes
Yes
Yes
Check a set in the 'Stand-by mode'.
Input the video source properly.
Please, Contact Tech support.
Check CN1101 / CN1105_SAV
Change the Main Assy
Check IC3002 (X4).
Change the Main Assy.
No
No
No
No
No
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Check the component source and check the
connection of component cables (Y,Pb,Pr) ?
Check the LVDS cable?
Check the T-Con B'd?
Replace the LCD panel?
Caution
Make sure to disconnect the power before working on the IP board.
Содержание LA22C450E1
Страница 34: ...1 4 1 Precautions Memo ...
Страница 51: ...4 4 4 Troubleshooting WAVEFORMS 12 PC input V sink H sink R G B 3 LVDS output ...
Страница 53: ...4 6 4 Troubleshooting WAVEFORMS 1 HDMI input RX_Data RX_Clk 2 LVDS output ...
Страница 55: ...4 8 4 Troubleshooting WAVEFORMS 1 CVBS OUT Grey Bar 2 LVDS output ...
Страница 57: ...4 10 4 Troubleshooting WAVEFORMS 1 LVDS output ...
Страница 59: ...4 12 4 Troubleshooting WAVEFORMS 1 I2S Data 2 Speaker out ...
Страница 63: ...4 16 4 Troubleshooting WAVEFORMS 1 PC input V sink H sink R G B 2 LVDS output ...
Страница 65: ...4 18 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output ...
Страница 67: ...4 20 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Страница 69: ...4 22 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 71: ...4 24 4 Troubleshooting WAVEFORMS 5 Compnent_Y Gray scale Pb Pr Color bar 2 LVDS output ...
Страница 73: ...4 26 4 Troubleshooting WAVEFORMS 7 Speaker out ...
Страница 97: ...6 2 6 Wiring Diagram 26 32 T CON MainBoard IP Board CN1405 CN1503 Speaker Speaker Function CN301 CN10_18P ...