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4-19
4. Troubleshooting
4-1-8. No Video (Component)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the Component source
-
Check the SX1.
-
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
Does the component data appear at
TP-COMP_Y, COMP_PB, COMP_PR
(Comp / Y, Pb, Pr) ?
Does the digital data appear at
TP - , O_TXCLK-,
, F_TXCLK- ?
Yes
Yes
Yes
Yes
Check a set in the 'Stand-by mode'
Input the component source properly.
Please, Contact Tech support.
Check CN802.
Change the Main Assy.
Check IC1102 (SX1).
Change the Main Assy.
No
No
No
No
No
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Check the component source and
check the connection of component
cables(Y,Pb,Pr)?
Check the LVDS cable?
Check the T-Con B'd?
Replace the LCD panel?
5
2
Caution
Make sure to disconnect the power before working on the IP board.
Содержание UA32C5000QF
Страница 19: ...Memo 1 4 1 Precautions...
Страница 41: ...4 3 4 Troubleshooting 40 T Con F1 Pin 1 5...
Страница 43: ...4 5 4 Troubleshooting...
Страница 44: ...4 6 4 Troubleshooting WAVEFORMS 1 PC input V sink H sink R G B 2 LVDS output...
Страница 46: ...4 8 4 Troubleshooting...
Страница 47: ...4 9 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output...
Страница 49: ...4 11 4 Troubleshooting...
Страница 50: ...4 12 4 Troubleshooting WAVEFORMS 2 LVDS output...
Страница 52: ...4 14 4 Troubleshooting...
Страница 53: ...4 15 4 Troubleshooting WAVEFORMS 2 LVDS output...
Страница 55: ...4 17 4 Troubleshooting...
Страница 56: ...4 18 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output...
Страница 58: ...4 20 4 Troubleshooting...
Страница 59: ...4 21 4 Troubleshooting WAVEFORMS 5 Compnent_Y Gray scale Pb Pr Color bar 2 LVDS output...
Страница 61: ...4 23 4 Troubleshooting...
Страница 62: ...4 24 4 Troubleshooting WAVEFORMS 7 Speaker out...
Страница 76: ...4 38 4 Troubleshooting 4 8 PCB diagram 4 8 1 PCB layout...
Страница 77: ...4 39 4 Troubleshooting 4 8 2 Main TOP 4 8 3 Main Inner 2...
Страница 78: ...4 40 4 Troubleshooting 4 8 4 Main Inner 3 4 8 5 Main Bottom...
Страница 79: ...4 41 4 Troubleshooting 4 8 6 Power_32 37 SMPS 4 8 7 Power_40 SMPS...
Страница 80: ...4 42 4 Troubleshooting 4 8 8 Power_46 SMPS...