Samsung UN40C6300SF Service Manual page 70

4. Troubleshooting
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..
-
When the speaker connectors are disconnected or damaged.
-
Major
When the sound processing part of the Main Board is not functioning.
-
checkpoints
Speaker defect.
-
0
Diagnostics
!
Caution Make sure to disconnect the power before working on the IP board.
4-28
Check the source and check the connection
of sound cable (Comp/PC/DVI to HDMI) ?
Yes
Check the signal at input of Main board?
AV1, COMP1 R : C320 / L : C321
PC, DVI R : C314 / L : C315
Yes
Check the Power of Audio codec IC ?
C303 : B3.3V
C306 : B9V
Yes
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
Yes
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 (-)
Yes
Replace speaker ?
No
Input the sound source properly.
Check CN407, CN402.
No
Change the Main Assy.
No Change the Main Assy.
Check IC1101(Valencia),
No
IC302(Audio IC).
Change the Main Assy.
No
Check IC1101(Valencia),
IC302(Audio IC).
Change the Main Assy.
No
Please, Contact Tech support.