LG 8cb ts free download

File name 8cb_ts.pdf

NO RASTER CHECK +B at D807 cathode Normal Abnormal Check Open Is the voltage at pin37 & 12 of IC512 8V? FUSE of AC line No Check /replace OK Fuse,D801,IC801 Yes Check the in/out of IC841,IC842 D810,D811,D812 Check the voltage Check pin40 No of C806 of IC512(H-out) 0V No Check &replace Check /replace Yes 254~380V IC512 Fuse,D801,IC801 Check u-COM Check Q402 pin20 low? D810,D811,D812 Check the voltage No collector waveform of pin4, IC803. Check &replace No Yes IC512 Check /replace Check T451 Q802 & each pin voltage Check /replace No D806,IC803 R807,R815 Check &replace Yes IC512 Is the voltage at pin37 & 12 of IC512 8V? NO SOUND / PICTURE OK AV STEREO MODEL NICAM STEREO MODEL Select correct Select correct system in MENU system in MENU OK OK NOT OK NOT OK Check the waveform Check the waveform of PIN4, HIC3 of PIN 7,8 P611A OK Check / replace