4-16
4. Troubleshooting
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
Does the DC B12VS appear at
CN201 PIN 7,9 - B12VS_PW ?
Does the sound data appear at
PIN - COMP1_SR_IN,
COMP1_SL_IN
VIA - PC_DVI_SR_IN,
PC_DVI_SL_IN (PC/DVI) ?
Does the sound data appear at
TP - SPK_ L-, SPK_L+, SPK_R-, SPK_R+ ?
Yes
Yes
Yes
Yes
Input the sound source properly.
Please, Contact Tech support.
Change the Main Assy.
Check CN503, CN402.
Change the Main Assy.
Check IC1001 (X6).
Change the Main Assy.
No
No
No
No
No
Check the source and
check the connection of sound cable
(Comp/PC/DVI to HDMI) ?
Replace speaker ?
TBD
7
Caution
Make sure to disconnect the power before working on the IP board.
Содержание LE32D400E1W
Страница 20: ...2 14 2 Product specifications 2 4 2 e Manual How to view the e Manual ...
Страница 21: ...2 15 2 Product specifications ...
Страница 31: ...4 3 4 Troubleshooting Main Board_Bottom ...
Страница 33: ...4 5 4 Troubleshooting Main Board_Top ...
Страница 34: ...4 6 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output ...
Страница 36: ...4 8 4 Troubleshooting Main Board_Top ...
Страница 37: ...4 9 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Страница 39: ...4 11 4 Troubleshooting Main Board_Top ...
Страница 40: ...4 12 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Страница 42: ...4 14 4 Troubleshooting Main Board_Top ...
Страница 43: ...4 15 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 45: ...4 17 4 Troubleshooting Main Board_Bottom ...
Страница 46: ...4 18 4 Troubleshooting WAVEFORMS 7 Speaker out ...
Страница 48: ...4 20 4 Troubleshooting Main Board_Bottom ...
Страница 50: ...4 22 4 Troubleshooting Main Board_Top ...
Страница 51: ...4 23 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output ...
Страница 53: ...4 25 4 Troubleshooting Main Board_Top ...
Страница 54: ...4 26 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Страница 56: ...4 28 4 Troubleshooting Main Board_Top ...
Страница 57: ...4 29 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Страница 59: ...4 31 4 Troubleshooting Main Board_Top ...
Страница 60: ...4 32 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 62: ...4 34 4 Troubleshooting Main Board_Bottom ...
Страница 63: ...4 35 4 Troubleshooting WAVEFORMS 7 Speaker out ...
Страница 78: ...4 50 4 Troubleshooting TOP BOTTOM INNER 1 INNER 2 ...
Страница 79: ...4 51 4 Troubleshooting Non Filp UE22D5003BW UE19D4003BW PCB ...
Страница 80: ...4 52 4 Troubleshooting TOP BOTTOM INNER 1 INNER 2 ...
Страница 83: ...4 55 4 Troubleshooting UD5003 40 Model Inch CODE P N UD5003 40 BN44 00473A PSLF121A03S ...
Страница 85: ...4 57 4 Troubleshooting SMPS_LD503 32 Model Inch CODE P N LD503 32 BN44 00469B IV40F1_BHS ...
Страница 87: ...5 2 5 Wiring Diagram 19 22 Main Board SMPS TCON Function IR SPEAKER SPEAKER CN1201 CN302 CN1601_HD CN201 ...