Samsung 20050921103757437 4 trouble 203 free download

File name 20050921103757437_4_trouble_203.pdf

4 Troubleshooting 4 Troubleshooting 4-1 No Power LAMP off, power indicator No Check a connection a power cable. LED red color? Yes Does proper DC 12V No Change a Assy PCB Power. appear at C820, C823? Yes Does proper DC A3.3V, No Check a IC816, IC815 A5V appear at Change a main PCB ass'y. C834, C830? Yes Does proper DC 5V, 3.3V, No 1.8V appear at C813, C811, Check a IC821, IC811 C816? Change a main PCB ass'y. Yes No Check a other function. A power is supplied to set? (No picture part) Replace a lcd panel. 4-1 4 Troubleshooting 4-2 No Video (Analog PC Signal) Power Indicator is off. Lamp on, no video. Yes Check a PC source and check No Input a analog PC signal and the connection of DSUB cable? connected cable(DPMS). Yes Does the signal appear at No PC cable. Change a PC 1 R781, R782, R783? cable. Change a main PCB ass'y. Yes Does the digital data appear at output of No Check a IC310. 3 LVDS TX(R422~R425, Change a main PCB ass'y. R430~R433)? Yes Check a LVDS cable? No Replace a lcd panel? Please, Call to 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 (DVI-Digital Signal) Power Indicator is off. Lamp on, no video. Yes Check the connectionn No Input a HDMI cable. of HDMI cable? Yes Does the digital data appear at No HDMI cable change a HDMI cable 4 FT2704, 2705, 2706, 2708? change a main PCB ass'y. Yes Does the digital data No 3 appear at output of IC310 Check a IC310. LVDS(R422~R425, R430~R433)? Change a main PCB ass'y. Yes Check a LVDS cable? No Repla