4-18
4. Troubleshooting
4-1-7. No Sound
Symptom
Video is normal but there is no sound..
-
Major
checkpoints
When the speaker connectors are disconnected or damaged.
When the sound processing part of the Main Board is not functioning.
Speaker defect..
-
-
-
Diagnostics
Check CN1302 or CN1203
Change the Main Assy
No
Yes
Does the DC B3.3V, B9V
appear at BD1502, C1501?
No
Yes
Check the source and
check the connection of sound cable
(Comp/PC/DVI to HDMI).
Yes
Change the Main Assy
Yes
Does the sound data appear at
C1521, C1522(AV2 R/L), C1523, C1524
(Comp1, AV1 R/L), C1519, C1520
(Comp2 R/L), C1527, C1528(DVI R/L),
C1529, C1530(PC R/L) ?
Does the I2C data appear at
R1501, R1502?
No
Check IC1501 (Audio CODEC)
Change the Main Assy
No
Input the sound source properly.
Yes
Replace speaker?
Please, Contact Tech support
No
Does the sound data appear at
BD1506, BD1507 (R +/-)
BD1508, BD1509 (L +/-)?
No
Check IC601 (Chelsea)
Check IC1502 (Sound AMP)
Change the Main Assy
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 ...