Samsung 09 Troubleshooting free download

File name 09_Troubleshooting.pdf

4 Troubleshooting 4 Troubleshooting 4-1 No Power LAMP off, power indicator No Check power cable connection. LED red color? Yes Does proper DC 12V No Change Power PCB Assy . appear at C820, C823? Yes Does proper DC A3.3V, No Check IC816, IC815 A5V appear at Change main PCB ass'y . C834, C830? Yes Does proper DC 5V, 3.3V, No 1.8V appear at C813, C811, Check IC821, IC811 C816? Change main PCB ass'y. Yes Check the LVDS Cable. And replace LCD Panel. 4-1 4 Troubleshooting 4-2 No Video (Analog PC Signal) Power Indicator is off. Lamp on, no video. Yes Check PC source and check No Input an analog PC signal and the connection of DSUB cable? connect cable. Yes Does the signal appear at No 1 Change PC Cable. R781, R782, R783? Yes Does the digital data appear at output of No Check IC310. 3 LVDS TX(R422~R425, Change main PCB ass'y. R430~R433)? Yes Check LVDS cable? No Replace lcd panel? Please call Samsung Co. LTD. 4-2 4 Troubleshooting WAVEFORMS 1 R,G,B Output Signal 3 Digital Output Data of IC310 4-3 4 Troubleshooting 4-3 No Video (HDMI/DVI-Digital Signal) Power Indicator is off. Lamp on, no video. Yes Check the connectionn No Input an HDMI/DVI Signal. of HDMI/DVI cable? Yes Does the digital data appear at No Change HDMI/DVI Cable. 4 FT2704, 2705, 2706, 2708? Yes Does the digital data No 3 appear at output of IC310 Check IC310. LVDS(R422~R425, R430~R433)? Change main PCB ass'y. Yes Check LVDS cable? No Replace lcd panel? Please call Samsung Co. LTD. 4-4 4 Troubleshooting WAVEFORMS 3 Digital Output Data