Samsung UN40C6300SF Service Manual

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4-284. Troubleshooting4-1-8. 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..-MajorcheckpointsWhen the speaker connectors are disconnected or damaged.-When the sound processing part of the Main Board is not functioning.-Speaker defect.-DiagnosticsCheck the source and check the connectionof sound cable (Comp/PC/DVI to HDMI) ?YesYesNo 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.NoNoNoCheck the signal at input of Main board?AV1, COMP1 R : C320 / L : C321PC, DVI R : C314 / L : C315Check the I2C DATA between the Audio IC’s ?Pin #6 of IC302 : VAL_MCLKPin #7 of IC302 : VAL_LRCLKPin #10 of IC302 : PCM_I2C_DATA1. 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 appearat ?TP302 (SPDIF_OUT)4. Check the Woofer sound data atBD314W (+)BD313W (-)0!YesYesYesChange the Main Assy.NoCheck the Power of Audio codec IC ?C303 : B3.3VC306 : B9VCaution Make sure to disconnect the power before working on the IP board.