4-7
4. Troubleshooting
4-1-4. No Video (Tuner_CVBS)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the Tuner CVBS source
Check the SDP84(ARSENAL)
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
1
2
No
Check a B+ voltage (#4 of Tuner) 5V,
change a main PCB ass’y.
No
No
Power Indicator is off.
Lamp on, no picure.
Yes
Check a TU5002
Change a main PCB ass’y.
Does the signal appear at C5020?
[4] Does the signal appear at
pin 10 of TU5002?
Does the digital data appear at the
output of LVDS (RA7062~RA7067)?
No
Please, Contact Tech support.
Check the LVDS cable?
Replace the LCD panel?
Yes
Connect the RF cable and
check RF signal.
Yes
1
1
2
Yes
No
Check a IC6001
Change a main PCB ass’y
Caution
Make sure to disconnect the power before working on the IP board.
Содержание LN32B550K1M
Страница 7: ...1 4 1 Precautions Memo ...
Страница 31: ...4 4 4 Troubleshooting WAVEFORMS 1 R G B Output Signal PC_R Signal PC_G Signal PC_B Signal ...
Страница 33: ...4 6 4 Troubleshooting WAVEFORMS 1 Signal of HDMI Data 2 Digital Output Data ...
Страница 37: ...4 10 4 Troubleshooting WAVEFORMS 1 AV_CVBS Output Signal ...
Страница 39: ...4 12 4 Troubleshooting WAVEFORMS 1 I2C Data 3 Speaker out ...
Страница 66: ...4 39 4 Troubleshooting 5 Press 0 6 Save latest BSP images to update folder in usb memory ...
Страница 67: ...4 40 4 Troubleshooting 7 Enter bbm usb after connecting usb memory 8 Press 1 ...
Страница 68: ...4 41 4 Troubleshooting 9 Enter u boot bin 10 Press x to return prompt menu ...
Страница 359: ...6 5 6 Wiring Diagram 6 2 Wiring Picture ...