4-22
4. Troubleshooting
4-1-8. 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..
-
-
-
Caution
Make sure to disconnect the power before working on the PD board.
Diagnostics
Check CN3005
Change the main PCB assy
No
Yes
No sound
Yes
Check the sound source and
check the connection of
sound cable?
No
Input a sound signal.
Check the connected cable.
Yes
Check the LVDS cable?
Replace the speaker?
Please, contact Tech support
No
Does the digital data appear at
pin27,28,29 of IC2002?
No
Check IC2001
Change the main PCB assembly
!
Does the signal appear at R3069,
R3071?
Yes
Does the signal appear at
pin1~4 of CN2001?
No
Check IC2002
Change the main PCB assembly
@
Yes
0
Summary of Contents for UE B7000WW Series
Page 7: ...1 4 1 Precautions Memo...
Page 281: ...4 3 4 Troubleshooting...
Page 287: ...4 9 4 Troubleshooting PIN27 A5V PIN23 B12VS PIN15 B5V PIN9 B13V...
Page 289: ...4 11 4 Troubleshooting WAVEFORMS 1 2 PC Input V Sync H Sync 3 LVDS Out CLK...
Page 293: ...4 15 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 6 Eagle Out Clk H Sync...
Page 295: ...4 17 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 7 TS DATA Out Clk Data 0...
Page 297: ...4 19 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar...
Page 299: ...4 21 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 9 Component Input Y Pb...