4-18
4. Troubleshooting
4-1-4. No Video (Tuner_CVBS)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the Tuner CVBS source
-
Check the Valencia
-
Check if the LVDS cable is loose or not.
-
Diagnostics
Change the TU701 or
the main PCB assembly.
No
Yes
No video
Yes
Check the RF source and
check the connection of RF cable?
No
Input the RF signal.
Check the connected cable.
Yes
6
Does the signal appear at
pin11, 12 of TU701?
Yes
Check the LVDS cable?
Replace the LCD panel?
Please, contact Tech support.
No
Does the digital data appear at
Pin 11~81 of CN1602 ?
No
Change the IC1001 or
the main PCB assembly.
5
Caution
Make sure to disconnect the power before working on the PD board.
Notice
Refer to the next page for detailed locations.
Содержание UN46C9000ZF
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Страница 103: ...4 11 4 Troubleshooting Location Main TOP BOTTOM B A E C D Detail A B C D E ...
Страница 105: ...4 13 4 Troubleshooting Location Main TOP BOTTOM B A Detail A B ...
Страница 106: ...4 14 4 Troubleshooting WAVEFORMS 1 2 PC Input V Sync H Sync 3 LVDS Out CLK ...
Страница 108: ...4 16 4 Troubleshooting Location Main TOP BOTTOM C B A Detail A B C ...
Страница 109: ...4 17 4 Troubleshooting WAVEFORMS 4 5 HDMI Input CLK 6 Tuner CVBS Out Pattern Grey Bar 7 TS DATA Out Clk Data 0 ...
Страница 111: ...4 19 4 Troubleshooting Location Main TOP BOTTOM B A C Detail A B C ...
Страница 112: ...4 20 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 6 Eagle Out Clk H Sync ...
Страница 114: ...4 22 4 Troubleshooting Location Main TOP BOTTOM B A C Detail A B C ...
Страница 115: ...4 23 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 7 TS DATA Out Clk Data 0 ...
Страница 117: ...4 25 4 Troubleshooting Location Main TOP BOTTOM B A C Detail A B C ...
Страница 118: ...4 26 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar ...
Страница 120: ...4 28 4 Troubleshooting Location Main TOP BOTTOM B A C Detail A B C ...
Страница 121: ...4 29 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 9 Component Input Y Pb ...
Страница 123: ...4 31 4 Troubleshooting Location Main TOP BOTTOM B D A C Detail A B C D ...
Страница 124: ...4 32 4 Troubleshooting WAVEFORMS 0 Audio Input Sign Wave I2S Input Clk Data Audio Amp Out Sign Wave ...