4-1-8. No Sound (1.Speaker 2.Monitor_out, 3.Optical)
※ Refer to the next page to check the lacation such a CN201 or IC201 SVC Manual mentioned.
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 the source and check the connection
of sound cable (Comp/PC/DVI to HDMI) ?
Yes
Yes
No
Input the sound source properly.
Replace speaker ?
No
Please, Contact Tech support.
Check CN407, CN402.
Change the Main Assy.
Check IC1101(Valencia),
IC302(Audio IC).
Change the Main Assy.
Check IC1101(Valencia),
IC302(Audio IC).
Change the Main Assy.
No
No
No
Check the signal at input of Main board?
AV1, COMP1 R : C320 / L : C321
PC, DVI R : C314 / L : C315
Check the I2C DATA between the Audio IC’s ?
Pin #6 of IC302 : VAL_MCLK
Pin #7 of IC302 : VAL_LRCLK
Pin #10 of IC302 : PCM_I2C_DATA
1. Check the Speaker sound data at ?
BD304, BD303 (R +/-)
BD306, BD305 (L +/-)
2. Check the Monitor out sound data at ?
L507 ( R )
L506 ( L )
3. Does the SODIF OUT sound data appear
at ?
TP302 (SPDIF_OUT)
4. Check the Woofer sound data at
BD314W (+)
BD313W (-)
0
!
Yes
Yes
Yes
Change the Main Assy.
No
Check the Power of Audio codec IC ?
C303 : B3.3V
C306 : B9V
Caution Make sure to disconnect the power before working on the IP board.
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