4-8
4. Troubleshooting
4-1-4. No video (HDMI1, 2, 3, 4 - Digital signal)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the HDMI source.
-
Check the HDMI switch, 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 HDMI source and
check the connection of HDMI cable?
Check the LVDS cable?
Check the T-Con B'd?
Replace the LCD panel?
Does the digital data appear at
TP-, E_TXCLK- ,
, O_TXCLK-?
Does the signal appear at
CN1002 (Pin#12 , #7 )(HDMI1)
CN1006 (Pin#12 , #7 )(HDMI2)
CN1001_550 (Pin#12 , #7 )(HDMI3)
CN1004 (Pin#12 , #7 )(HDMI4)
(HDMI RX_Clk , RX_Data) ?
Check a set in the 'Stand-by mode'.
Input the HDMI signal properly.
Please, Contact Tech support.
Check IC1102 (SX1).
Change the Main Assy.
Check CN1002, CN1006
CN1001_550, CN1004.
Check HDMI cable.
Change the Main Assy.
Yes
Yes
Yes
Yes
No
No
No
No
No
2
3
Caution
Make sure to disconnect the power before working on the IP board.
Содержание LA32C530F1R
Страница 49: ...4 4 4 Troubleshooting MAINBOARD T T CON ...
Страница 51: ...4 6 4 Troubleshooting MAINBOARD B ...
Страница 52: ...4 7 4 Troubleshooting WAVEFORMS 1 PC input V sink H sink R G B 2 LVDS output ...
Страница 54: ...4 9 4 Troubleshooting MAINBOARD T ...
Страница 55: ...4 10 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output ...
Страница 57: ...4 12 4 Troubleshooting MAINBOARD T ...
Страница 58: ...4 13 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Страница 60: ...4 15 4 Troubleshooting MAINBOARD T ...
Страница 61: ...4 16 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Страница 63: ...4 18 4 Troubleshooting MAINBOARD B ...
Страница 64: ...4 19 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 66: ...4 21 4 Troubleshooting MAINBOARD B ...
Страница 67: ...4 22 4 Troubleshooting WAVEFORMS 5 Compnent_Y Gray scale Pb Pr Color bar 2 LVDS output ...
Страница 69: ...4 24 4 Troubleshooting MAINBOARD B MAINBOARD T ...
Страница 70: ...4 25 4 Troubleshooting WAVEFORMS 6 Speaker out ...
Страница 89: ...4 44 4 Troubleshooting 4 9 PCB diagram 4 9 1 PCB layout 4 9 2 Main TOP ...
Страница 90: ...4 45 4 Troubleshooting 4 9 3 Main Inner 2 4 9 4 Main Inner 3 ...
Страница 91: ...4 46 4 Troubleshooting 4 9 5 Main Bottom ...
Страница 92: ...4 47 4 Troubleshooting 4 9 6 Power_32 SMPS 4 9 7 Power_37 SMPS ...
Страница 93: ...4 48 4 Troubleshooting 4 9 8 Power_40 SMPS 4 9 9 Power_46 SMPS ...