Samsung UN40C6300SF Service Manual

Also see for UN40C6300SF: User manual User manual User manual User manual User manual

4-194. Troubleshooting4-2-5. No Video (Tuner DTV)※ Refer to the next page to check the lacation such a CN201 or IC201 SVC Manual mentioned.Symptom Audio is normal but no picture is displayed on the screen.-MajorcheckpointsCheck the DTV source.-Check the Tuner, Check the Valencia.-This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.-DiagnosticsPower indicator LED is off.Lamp(Backlight) on, no video ?YesYesYesYesNo Check a set in the ‘Stand-by mode’.Check the LVDS cable?Replace the T-con / LCD panel?No Please, Contact Tech support.Input the RF source properly.Check the connection of RF cable ? NoCheck the D-TV source.Change the Main Assy.NoNoCheck the ‘signal strength’ in Self Diagnosismenu Strength is enough ?Check the Power of Tuner ?Pin #5 of Tuner : B33V_TunerPin #3 of Tuner : B5V_TunerYesCheck Tuner and IC901(Arsenal).Change the Main Assy.NoCheck the CH output of IC901 ?R904 : CH_CLKR905 : CH_VALID6YesCheck IC1101(Valencia) andIC1701(Reading).Change the Main Assy.NoCheck the LVDS clk signalat output of Main board.(TX1~TX4)TX1_CLK : TP1978 ~1979TX2_CLK : TP1980 ~1981TX3_CLK : TP19102 ~19103TX4_CLK : TP19104 ~191055Caution Make sure to disconnect the power before working on the IP board.