4-7
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 Saturn4(IC201)
-
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
Check CN803, CN801.
Check HDMI cable.
Change the Main Assy.
LC350_26": BN44-00368A
LC350_32" : BN41-00369A
No
Yes
Does the digital data appear at
Pin #16,17 (LVDS Data clk)
of LVDS connector?
No
Yes
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Yes
Check the HDMI source and
check the connection of HDMI cable ?
No
Insert the HDMI signal properly.
Yes
Check IC201 (Saturn4).
Change the Main Assy.
LC350_26": BN44-00368A
LC350_32" : BN41-00369A
Check the LVDS cable?
Replace the LCD panel?
Please, Contact Tech support.
No
Does the signal appear at
CN803 (Pin#12, #7 )(HDMI1)
CN801 (Pin#12, #7 )(HDMI2)
(HDMI RX_Clk, RX_Data)?
3
2
No
Check if the set is in
'Stand-by mode.'
Caution
Make sure to disconnect the power before working on the IP board.
Содержание LN26C350D1D
Страница 22: ...4 5 4 Troubleshooting Location Main TOP BOTTOM A B Detail A TP823 TP826 TP825 TP821 TP828 B LVDS CLK LVDS CLK ...
Страница 23: ...4 6 4 Troubleshooting WAVEFORMS 1 PC input V sink H sink R G B 2 LVDS output ...
Страница 25: ...4 8 4 Troubleshooting Location Main TOP BOTTOM A B Detail A Pin 7 Pin 12 B LVDS CLK LVDS CLK ...
Страница 26: ...4 9 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output ...
Страница 28: ...4 11 4 Troubleshooting Location Main TOP BOTTOM A B Detail A 2 TU5V 8 CVBS 4 TU33V B LVDS CLK LVDS CLK ...
Страница 29: ...4 12 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 31: ...4 14 4 Troubleshooting Location Main TOP BOTTOM A B Detail A 2 TU5V 4 TU33V B LVDS CLK LVDS CLK ...
Страница 32: ...4 15 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Страница 34: ...4 17 4 Troubleshooting Location Main TOP BOTTOM B A Detail A COMP_YCVBS B LVDS CLK LVDS CLK ...
Страница 35: ...4 18 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 37: ...4 20 4 Troubleshooting Location Main TOP BOTTOM B A Detail A COMP_YCVBS COMP_PR COMP_PB B LVDS CLK LVDS CLK ...
Страница 38: ...4 21 4 Troubleshooting WAVEFORMS 5 Compnent_Y Gray scale Pb Pr Color bar 2 LVDS output ...
Страница 41: ...4 24 4 Troubleshooting WAVEFORMS 6 I2C Data 7 Speaker out ...
Страница 67: ...6 1 6 Wiring Diagram 6 Wiring Diagram 6 1 Wiring Diagram ...