4-4
4. Troubleshooting
4-1-3. 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 Arsenal, Check the Chelsea.
-
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
Power indicator LED is off.
Lamp(Backlight) on, no video?
Check the PC source and
check the connection of D-SUB ?
Does the signal appear at
TP - PC_R, PC_G, PC_B, PC_HS, PC_VS
(R, G, B, H, V) ?
Does the digital data appear at
TP-, E_TXCLK-,
, O_TXCLK-?
Check the LVDS cable?
Check the T-Con B’d?
Replace the LCD panel?
Check a set in the ‘Stand-by mode’
or ‘DPMS mode’.
Input the analog PC signal properly.
Check CN902, PC cable.
Change the Main Assy.
Check IC1102 (SX1).
Change the Main Assy.
Please, Contact Tech support.
Yes
Yes
Yes
Yes
No
No
No
No
1
2
Caution
Make sure to disconnect the power before working on the IP board.
Содержание LE26C45 Series
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Страница 34: ...4 9 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output ...
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Страница 37: ...4 12 4 Troubleshooting WAVEFORMS 2 LVDS output ...
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Страница 40: ...4 15 4 Troubleshooting WAVEFORMS 2 LVDS output ...
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Страница 43: ...4 18 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 45: ...4 20 4 Troubleshooting ...
Страница 46: ...4 21 4 Troubleshooting WAVEFORMS 5 Compnent_Y Gray scale Pb Pr Color bar 2 LVDS output ...
Страница 48: ...4 23 4 Troubleshooting ...
Страница 49: ...4 24 4 Troubleshooting WAVEFORMS 6 Speaker out ...
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Страница 67: ...4 42 4 Troubleshooting 4 9 5 Main Bottom ...
Страница 68: ...4 43 4 Troubleshooting 4 9 6 Power_32 SMPS LC5XX 4 9 7 Power_37 SMPS LC5XX ...
Страница 69: ...4 44 4 Troubleshooting 4 9 8 Power_40 SMPS LC5XX 4 9 9 Power_46 SMPS LC5XX ...
Страница 70: ...4 45 4 Troubleshooting 4 9 10 Power_26 SMPS LC45X 4 9 11 Power_32 SMPS LC45X ...