Samsung UA40C6200UF Service Manual page 80

4. Troubleshooting
4-1-8. No Sound (1.Speaker 2.Monitor_out, 3.Optical)
Symptom Video is normal but there is no sound..
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When the speaker connectors are disconnected or damaged.
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Major
When the sound processing part of the Main Board is not functioning.
-
checkpoints
Speaker defect.
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9
Diagnostics
0
Caution Make sure to disconnect the power before working on the IP board.
4-22
Check the source and check the connection
of sound cable (Comp/PC/DVI to HDMI) ?
Yes
Check the signal at input of Main board ?
PC, DVI R : C2023
L : C2024
SC1 AV1 R : C2025
L : C2026
COMP, AV2 R : C2029
L : C2030
Yes
Check the Power of Audio codec IC ?
BD2001 : B3.3V
BD2020 : B9V
Yes
Check the I2C DATA between the Audio IC's ?
Pin #1 of IC2001 : VAL_I2STX0_MCLK
Pin #2 of IC2001 : VAL_I2STX0_LRCLK
Pin #10 of IC2001 : PCM_I2S_DATA
Yes
1. Check the Speaker sound data at ?
BD2999, BD2998 (R +/-)
BD2997, BD2996 (R +/-)
2. Check the Monitor out sound data at ?
L1302 (R)
L1301 (L)
3. Does the SODIF OUT sound data appear at ?
TP19 (VAL_SPDIF)
Yes
Replace speaker ?
No
Input the sound source properly.
Check CN3004, CN3005, CN3007.
No
Change the Main Assy.
Change the Main Assy.
No
No
Check IC2001, IC2101.
Change the Main Assy.
No
Check IC2001, IC2101.
Change the Main Assy.
No
Please, Contact Tech support.