4-3
4. Troubleshooting
4-1-2. No Video (Analog PC signal) (SX1)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the PC source.
-
Check the IC1102(SX1).
-
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
No
PC cable. Change a PC.
cable. Change a main PCB ass’y.
No
Does the digital data appear at the
output of LVDS Cable?
Power Indicator is off.
Lamp on, no video.
No
Check a PC source and check
the connection of DSUB cable?
IC1102.
Change a main PCB ass’y.
Yes
Check a LVDS cable?
Replace a lcd panel?
Does the signal appear at R581(R),
R582(G), R583(B) of IC1102?
Please, Call to Samsung Co. LTD.
Yes
Yes
Input a analog PC signal and
connected cable(DPMS).
Yes
Yes
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 ...