Samsung 09 Troubleshooting free download

File name 09_Troubleshooting.pdf

4 Troubleshooting 4 Troubleshooting 4-1 No Power Does DC 13V, 5V No appear at CN400? Check Inverter/Adaptor Board Yes Does DC 3.3V No Check circuits related Appear at FT412? to IC405. Yes Does DC 3.3V No Check circuits related to Appear at FT414? IC407. Yes Check IC701(VCTi), IC703, and IC301(SE6181LA) 4-1 4 Troubleshooting 4-2 No Picture (PC) Power Indicator is black. Does a signla appear at C106, C107 and C108 No 1 (R,G,B Input?) Does a signla Check circutis related CN100. appear at C106, C107 and C108 (R,G,B Input? Yes Does a signal appear at No 2 3 Check circuits related CN100. R113 and R115(H/V Sync)? Yes Does a signal appear at No 4 Check circuits related IC301. 1~30 of CN300(LVDS out)? Yes Replace LCD PANEL. 4-2 4 Troubleshooting WAVEFORMS 1 2 3 4 4-3 4 Troubleshooting 4-3 No Picture (TV) Does a signal appear at No Check TU200(TUNER). 5 PIN 2 of FT700 (X6965)? Yes Does a signal appear at No Check the circuits related to PIN71,72,73,74,75,78,79,80 IC701. of IC701? 6 Yes Does a signal appear at No Check IC301. 4 PIN 1~30 of CN300? Yes Replace LCD Panel. 4-4 4 Troubleshooting WAVEFORMS 4 5 6 4-5 4 Troubleshooting 4-4 No Picture (Video/S-VIDEO) Power Indicator is off. Lamp on, no picture. Dose the signal appear at No Check a A/V cable and R717,R718,R719 video signal. Yes Does the signal appear at No Check a connection harness. 5 PIN(71:80) of IC702? Yes Does the digital data No Check a IC702. appear at output of LVDS Change a main PCB ass'y. 4 (RA301~RA303)? Yes Check a LVDS cable? No Check a IC301. R