4-9
4. Troubleshooting
4-1-5. No Picture (Video_CVBS)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the Video Source
Check the IC6002, IC6001(SDP84), IC7001
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
1
2
No
Check a connection harness.
No
Power Indicator is off.
Lamp on, no picture.
Yes
Does the signal appear at
C6852,C6853,C6854?
No
Please, Contact Tech support.
Check a LVDS cable?
Replace lcd panel?
Yes
Check a A/V cable and video signal.
Yes
1
2
Does the digital data appear at the
output of LVDS (TP7025~TP7038 ,
TP7040~TP7053)?
No
Check a IC7001
Change a main PCB ass’y
Caution
Make sure to disconnect the power before working on the IP board.
Содержание LE37B55 series
Страница 7: ...1 4 1 Precautions Memo...
Страница 39: ...4 4 4 Troubleshooting WAVEFORMS 1 R G B H_sync input signal of IC6001 SDP84...
Страница 41: ...4 6 4 Troubleshooting WAVEFORMS 2 Digital Output Data 3 Signal of HDMI Data...
Страница 43: ...4 8 4 Troubleshooting WAVEFORMS 3 CVBS Output Signal 4 Tuner_CVBS Output Signal...
Страница 45: ...4 10 4 Troubleshooting WAVEFORMS 4 CVBS Output Signal at C6852 C6853 C6854...
Страница 47: ...4 12 4 Troubleshooting WAVEFORMS 6 The Signal are Inputed to IC2002 7 The Signal are Inputed to IC2002...
Страница 475: ...5 410 5 Exploded View Part List...