4-22
4. Troubleshooting
4-1-9. 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 CN802, CN901, JA701_EU.
Change the main assy.
No
Yes
Does the B13V(B13V1) appear?
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
TP-COMP_SL_IN, COMP_SR_IN(COMP/AV)?
TP-PC_SL_IN, PC_SR_IN(PC/DVI)?
TP-SC_SL_IN, TP_SR_IN(SCART)?
Does thd I2S data appear at R1390?
No
CHECK IC1102(SETD-10).
Change the main assy.
No
Input the sound source properly.
Yes
Replace speaker.
Please, Contact Tech support.
No
Does the sound data appear
TP-SPK_L-, SPK_L+,
SPK_R-, SPK_R+?
No
Check IC1301(Sound AMP)
Change the main assy.
6
7
Caution
Make sure to disconnect the power before working on the IP board.
Содержание LE19C45 Series
Страница 7: ...1 4 1 Precautions Memo ...
Страница 20: ...4 3 4 Troubleshooting Power CN2001 Pin 1 2 3 4 5 6 7 8 9 Dimming out A13V GND GND GND A5V A5V NC Panel Setting ...
Страница 22: ...4 5 4 Troubleshooting ...
Страница 23: ...4 6 4 Troubleshooting WAVEFORMS 1 PC input V sink H sink R G B 2 LVDS output ...
Страница 25: ...4 8 4 Troubleshooting ...
Страница 26: ...4 9 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output ...
Страница 28: ...4 11 4 Troubleshooting ...
Страница 29: ...4 12 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 31: ...4 14 4 Troubleshooting ...
Страница 32: ...4 15 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Страница 34: ...4 17 4 Troubleshooting ...
Страница 35: ...4 18 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 37: ...4 20 4 Troubleshooting ...
Страница 38: ...4 21 4 Troubleshooting WAVEFORMS 5 Compnent_Y Gray scale Pb Pr Color bar 2 LVDS output ...
Страница 40: ...4 23 4 Troubleshooting ...
Страница 41: ...4 24 4 Troubleshooting WAVEFORMS 6 I2S DATA 7 Speaker out ...
Страница 56: ...4 39 4 Troubleshooting 4 9 PCB diagram ...
Страница 57: ...4 40 4 Troubleshooting ...