4-21
4. Troubleshooting
4-1-7. No Video (Component 1, 2)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the Component source
-
Check the Valencia.
-
Refer to the next page to check the lacation such a CN201 or IC201 SVC Manual mentioned.
-
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
Comp2 Y : C1047
Pb : C1048
Pr : C1049
9
Yes
Check IC1101 and IC1701.
Change the Main Assy.
No
Check the LVDS clk signal at output of
Main board? (TX1~TX4)
TP1916 ~1919
TP1940 ~1942
5
Caution
Make sure to disconnect the power before working on the IP board.
Summary of Contents for LA32C630 Series
Page 64: ...4 4 4 Troubleshooting Location T CON TOP A B C BOTTOM Detail A F1 B13V B L9 VCC12 C TPVCC33 ...
Page 65: ...4 5 4 Troubleshooting WAVEFORMS 1 R G B H_sync input signal of IC6001 SDP84 ...
Page 68: ...4 8 4 Troubleshooting WAVEFORMS 4 PC input V sink H sink R G B 5 LVDS output ...
Page 71: ...4 11 4 Troubleshooting WAVEFORMS 6 PC input V sink H sink R G B 5 LVDS output ...
Page 74: ...4 14 4 Troubleshooting WAVEFORMS 7 CVBS OUT Grey Bar 5 LVDS output ...
Page 77: ...4 17 4 Troubleshooting WAVEFORMS 5 LVDS output 6 CH_CLK CH_VALID ...
Page 80: ...4 20 4 Troubleshooting WAVEFORMS 8 CVBS OUT Grey Bar 5 LVDS output 7 ASN_CVBS_CLK ...
Page 83: ...4 23 4 Troubleshooting WAVEFORMS 9 Compnent_Y Gray scale Pb Pr Color bar 5 LVDS output ...
Page 86: ...4 26 4 Troubleshooting WAVEFORMS 0 MCLK LRCLK PCM_I2C_DATA Speaker Monitor OUT SPDIF OUT ...