4-25
4. Troubleshooting
4-2-7. No Video (Component 1, 2)
※
Refer to the next page to check the lacation such a CN201 or IC201 SVC Manual mentioned.
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the Component source
-
Check the Valencia.
-
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Yes
Yes
Yes
No
Check a set in the ‘Stand-by mode’.
Check the LVDS cable?
Replace the T-con / LCD panel?
No
Please, Contact Tech support.
Input the component source properly.
Check the component source and check the
connection of component cables(Y,Pb,Pr) ?
No
Check CN502.
Change the Main Assy.
No
Does the component data appear at ?
Comp1 Y : C1039
Pb : C1040
Pr : C1041
9
Yes
Check IC1101(Valencia) and
IC1701(Reading).
Change the Main Assy.
No
Check the LVDS clk signal
at output of Main board.(TX1~TX4)
TX1_CLK : TP1978 ~1979
TX2_CLK : TP1980 ~1981
TX3_CLK : TP19102 ~19103
TX4_CLK : TP19104 ~19105
5
Caution
Make sure to disconnect the power before working on the IP board.
Summary of Contents for UN40C6300SF
Page 7: ...1 4 1 Precautions Memo ...
Page 50: ...4 8 4 Troubleshooting Location Main TOP BOTTOM Detail A B C ...
Page 51: ...4 9 4 Troubleshooting Location T CON TOP BOTTOM Detail A B C ...
Page 53: ...4 11 4 Troubleshooting Location Main TOP BOTTOM Detail A B C ...
Page 54: ...4 12 4 Troubleshooting WAVEFORMS 4 PC input V sink H sink R G B 5 LVDS output ...
Page 56: ...4 14 4 Troubleshooting Location Main TOP BOTTOM Detail A B C ...
Page 57: ...4 15 4 Troubleshooting WAVEFORMS 6 PC input V sink H sink R G B 5 LVDS output ...
Page 59: ...4 17 4 Troubleshooting Location Main TOP BOTTOM Detail A B C ...
Page 60: ...4 18 4 Troubleshooting WAVEFORMS 7 CVBS OUT Grey Bar 5 LVDS output ...
Page 62: ...4 20 4 Troubleshooting Location Main TOP BOTTOM Detail A B C ...
Page 63: ...4 21 4 Troubleshooting WAVEFORMS 5 LVDS output 6 CH_CLK CH_VALID ...
Page 65: ...4 23 4 Troubleshooting Location Main TOP BOTTOM Detail A B C ...
Page 66: ...4 24 4 Troubleshooting WAVEFORMS 8 CVBS OUT Grey Bar 5 LVDS output 7 ASN_CVBS_CLK ...
Page 68: ...4 26 4 Troubleshooting Location Main TOP BOTTOM Detail A B C ...
Page 69: ...4 27 4 Troubleshooting WAVEFORMS 9 Compnent_Y Gray scale Pb Pr Color bar 5 LVDS output ...
Page 71: ...4 29 4 Troubleshooting Location Main TOP BOTTOM Detail A A B C D E ...
Page 72: ...4 30 4 Troubleshooting WAVEFORMS 0 MCLK LRCLK PCM_I2C_DATA Speaker Monitor OUT SPDIF OUT ...