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
Does the DC B3.3V, B12VS
appear at BD202, TP- B13VS?
Does the sound data appear at
TP-AV_SR_IN, AV_SL_IN (AV R/L)
TP-PC_SR_IN, PC_SL_IN (PC R/L)
TP-SC_SR_IN, SC_SL_IN (SCART R/L)?
Does the sound data appear at
TP - L-, L+, R-, R+ ?
Yes
Yes
Yes
Yes
Input the sound source properly.
Please, Contact Tech support.
Change the Main Assy.
Check CN801, CN901, JA701.
Change the Main Assy.
Check IC1102(SX1).
Check IC1301(Sound AMP).
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 UA32C5000QF
Страница 19: ...Memo 1 4 1 Precautions...
Страница 41: ...4 3 4 Troubleshooting 40 T Con F1 Pin 1 5...
Страница 43: ...4 5 4 Troubleshooting...
Страница 44: ...4 6 4 Troubleshooting WAVEFORMS 1 PC input V sink H sink R G B 2 LVDS output...
Страница 46: ...4 8 4 Troubleshooting...
Страница 47: ...4 9 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output...
Страница 49: ...4 11 4 Troubleshooting...
Страница 50: ...4 12 4 Troubleshooting WAVEFORMS 2 LVDS output...
Страница 52: ...4 14 4 Troubleshooting...
Страница 53: ...4 15 4 Troubleshooting WAVEFORMS 2 LVDS output...
Страница 55: ...4 17 4 Troubleshooting...
Страница 56: ...4 18 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output...
Страница 58: ...4 20 4 Troubleshooting...
Страница 59: ...4 21 4 Troubleshooting WAVEFORMS 5 Compnent_Y Gray scale Pb Pr Color bar 2 LVDS output...
Страница 61: ...4 23 4 Troubleshooting...
Страница 62: ...4 24 4 Troubleshooting WAVEFORMS 7 Speaker out...
Страница 76: ...4 38 4 Troubleshooting 4 8 PCB diagram 4 8 1 PCB layout...
Страница 77: ...4 39 4 Troubleshooting 4 8 2 Main TOP 4 8 3 Main Inner 2...
Страница 78: ...4 40 4 Troubleshooting 4 8 4 Main Inner 3 4 8 5 Main Bottom...
Страница 79: ...4 41 4 Troubleshooting 4 8 6 Power_32 37 SMPS 4 8 7 Power_40 SMPS...
Страница 80: ...4 42 4 Troubleshooting 4 8 8 Power_46 SMPS...