4-12
4. Troubleshooting
4-1-2. No Video (Analog PC signal)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the PC source
-
Check the IC1001(Valencia)
-
Check if the LVDS cable is loose or not.
-
Diagnostics
Change the PC cable.
Change the main PCB assembly.
No
Yes
Does the digital appear at output of IC6001?
check R411, R412, R413, BD407,
BD408 (R, G, B, H, V)
No
Yes
No video
Yes
Check the PC source and check the
connection of DSUB?
No
Input an analog PC signal.
Check the connected cable.
Yes
Change the IC6001 or the main PCB
assembly.
Check the LVDS cable?
Replace the LCD panel?
Please, contact Tech support
No
Does the signal appear at
Pin 1,2,3,13,14(R,G,B,H,V) ?
1
2
Caution
Make sure to disconnect the power before working on the PD board.
Notice
Refer to the next page for detailed locations.
Summary of Contents for UN46C9000ZF
Page 95: ...4 3 4 Troubleshooting ...
Page 103: ...4 11 4 Troubleshooting Location Main TOP BOTTOM B A E C D Detail A B C D E ...
Page 105: ...4 13 4 Troubleshooting Location Main TOP BOTTOM B A Detail A B ...
Page 106: ...4 14 4 Troubleshooting WAVEFORMS 1 2 PC Input V Sync H Sync 3 LVDS Out CLK ...
Page 108: ...4 16 4 Troubleshooting Location Main TOP BOTTOM C B A Detail A B C ...
Page 111: ...4 19 4 Troubleshooting Location Main TOP BOTTOM B A C Detail A B C ...
Page 112: ...4 20 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 6 Eagle Out Clk H Sync ...
Page 114: ...4 22 4 Troubleshooting Location Main TOP BOTTOM B A C Detail A B C ...
Page 115: ...4 23 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 7 TS DATA Out Clk Data 0 ...
Page 117: ...4 25 4 Troubleshooting Location Main TOP BOTTOM B A C Detail A B C ...
Page 118: ...4 26 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar ...
Page 120: ...4 28 4 Troubleshooting Location Main TOP BOTTOM B A C Detail A B C ...
Page 121: ...4 29 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 9 Component Input Y Pb ...
Page 123: ...4 31 4 Troubleshooting Location Main TOP BOTTOM B D A C Detail A B C D ...