4-16
4. Troubleshooting
4-1-6. No Video (Component 1, 2)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the Component source
Check the chelsea.
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
Does the component data
appear at C458, C459, C460
(Comp1 / Y, Pb, Pr) C461, C462,
C463 (Comp2 / Y, Pb, Pr)?
No
Yes
Power indicator LED is off.
Lamp(Backlight) on, no video?
Yes
Check the component source and
check the connection of
component cables(Y,Pb,Pr)?
No
Input the component
source properly.
Yes
Check CN1301 or CN1203
Change the Main Assy
Yes
Check the LVDS cable?
Replace the LCD panel?
Please, Contact Tech support
No
Does the digital data appear at
R1030F (FRC_M_HSYNC)
Pin #19,20,34,35 (LVDS Data clk)
of LVDS connector?
No
Check IC601 (Chelsea)
Change the Main Assy
2
No
Check a set
in the ‘Stand-by mode’.
5
Caution
Make sure to disconnect the power before working on the IP board.
Содержание LA32B650T1R
Страница 28: ...1 4 1 Precautions Memo ...
Страница 61: ...4 9 4 Troubleshooting WAVEFORMS 1 PC input V sink H sink R G B 2 LVDS output ...
Страница 63: ...4 11 4 Troubleshooting WAVEFORMS 3 PC input V sink H sink R G B 2 LVDS output ...
Страница 65: ...4 13 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 67: ...4 15 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 69: ...4 17 4 Troubleshooting WAVEFORMS 5 Compnent_Y Gray scale Pb Pr Color bar 2 LVDS output ...
Страница 71: ...4 19 4 Troubleshooting WAVEFORMS 6 I2C Data 7 Speaker out ...
Страница 85: ...4 33 4 Troubleshooting 5 Press 0 6 Save latest BSP images to update folder in usb memory ...
Страница 86: ...4 34 4 Troubleshooting 7 Enter bbm usb after connecting usb memory 8 Press 1 ...
Страница 87: ...4 35 4 Troubleshooting 9 Enter u boot bin 10 Press x to return prompt menu ...