4-9
4. Troubleshooting
4-1-5. No Picture (Video_CVBS) (SX1)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the Video Source
-
Check the M-star
-
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
No
Check a connection harness.
No
Power Indicator is off.
Lamp on, no picture.
Yes
Does the signal appear at
C507, C509 of IC1102?
Check a LVDS cable ?
Replcelcd panel?
Please, Call to Samsung Co. LTD.
Yes
Check a A/V cable and video signal.
Yes
Caution
Make sure to disconnect the power before working on the IP board.
Summary of Contents for LA22C450E1
Page 34: ...1 4 1 Precautions Memo ...
Page 51: ...4 4 4 Troubleshooting WAVEFORMS 12 PC input V sink H sink R G B 3 LVDS output ...
Page 53: ...4 6 4 Troubleshooting WAVEFORMS 1 HDMI input RX_Data RX_Clk 2 LVDS output ...
Page 55: ...4 8 4 Troubleshooting WAVEFORMS 1 CVBS OUT Grey Bar 2 LVDS output ...
Page 57: ...4 10 4 Troubleshooting WAVEFORMS 1 LVDS output ...
Page 59: ...4 12 4 Troubleshooting WAVEFORMS 1 I2S Data 2 Speaker out ...
Page 63: ...4 16 4 Troubleshooting WAVEFORMS 1 PC input V sink H sink R G B 2 LVDS output ...
Page 65: ...4 18 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output ...
Page 67: ...4 20 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Page 69: ...4 22 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Page 71: ...4 24 4 Troubleshooting WAVEFORMS 5 Compnent_Y Gray scale Pb Pr Color bar 2 LVDS output ...
Page 73: ...4 26 4 Troubleshooting WAVEFORMS 7 Speaker out ...