4-2
4. Troubleshooting
Simple flow chart of malfunction
Yes
No
No
Does the TV turn on?
Can you see anything
on the screen?
Yes
Can you see
OSD menu running on
the screen?
Check LVDS cable connected
to Main Board.
If necessary,
replace the Main Board
Yes
Can you see Digital
Channel broadcast ?
No
Replace the Main Board
Check the Power Cord
Yes
No
No
is any sound of TV
when RF signal
connected?
Yes
A5V appear at
the pin 4 of CN201?
Yes
Check LVDS
cable connected.
If necessary replace the
T-con board.
No
Change the main board.
No
Check 18p cable.
If necessary, replace the
SMPS board.
Yes
B13V appear at the
pin 13,15,17 of CN201?
No
Change the main board.
Please, contact Tech
support
Summary of Contents for UN46C6900VF
Page 43: ...4 3 4 Troubleshooting ...
Page 53: ...4 13 4 Troubleshooting Location Main TOP CN401 IC901 Location Main BOTTOM ...
Page 54: ...4 14 4 Troubleshooting WAVEFORMS 1 2 PC Input V Sync H Sync 3 LVDS Out CLK ...
Page 56: ...4 16 4 Troubleshooting Location Main TOP CN1902 IC601 IC1101 Location Main BOTTOM ...
Page 59: ...4 19 4 Troubleshooting Location Main TOP TU801 IC1101 CN1902 Location Main BOTTOM ...
Page 60: ...4 20 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 6 Eagle Out Clk H Sync ...
Page 62: ...4 22 4 Troubleshooting Location Main TOP TU801 IC1101 CN1902 Location Main BOTTOM ...
Page 63: ...4 23 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 7 TS DATA Out Clk Data 0 ...
Page 65: ...4 25 4 Troubleshooting Location Main TOP R528 IC1101 CN1902 Location Main BOTTOM ...
Page 66: ...4 26 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar ...
Page 68: ...4 28 4 Troubleshooting Location Main TOP IC1101 CN1902 R503 R502 R501 Location Main BOTTOM ...
Page 69: ...4 29 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 9 Component Input Y Pb ...
Page 71: ...4 31 4 Troubleshooting Location Main TOP CN407 IC1101 IC301 Location Main BOTTOM ...