Samsung LW29A13WX XEC.0000023047.E.09 free download

File name LW29A13WX_XEC.0000023047.E.09.pdf

CONFIDENTIAL 5 Troubleshooting 5-1 No Power Does proper DC 28 V appear at No Check SMPS PCB and Adapter. DC jack connected to CN112? Yes Does proper DC 5 V appear No at Pin 1 of IC849 and Pin 2 of Check IC849, IC830 and IC828, IC852. IC828, IC830, IC852? Yes Does proper DC 12 V appear at No Check IC829. Pin 2 of IC829? Yes Does proper DC 2.5 V appear at No Check IC804, IC806 and IC807. Pin 2 of IC804, IC806 and IC807? Yes Does proper DC 3.3 V appear at No Check IC800, IC801 and IC805. Pin 2 of IC800, IC801 and IC805? Yes Check IC811 and IC817. LW29A13W/LW40A13W 5-1 5 Troubleshooting CONFIDENTIAL 5-2 No Video (PC Analog Signal) Power indicator is green Does the signal appear at No Check the R, G, B signal line and Pin 7, 15 and 22 of IC203? related the R, G, B signal line. Yes Does the clock pulse appear at No Check IC203 and related circuit of IC203. Pin 30 and 31 of IC203? Yes Does the colck pluse No Check related circuit of IC838. appear at Pin 4, 10 of IC838? Yes Replace LCD Panel. 5-2 LW29A13W/LW40A13W 5 Troubleshooting CONFIDENTIAL 5-3 No Video (PC Digital Signal) Power indicator is green Does the signal appear at No Check R2018, 2019, 2020, 2021, Pin 80, 81, 85, 86, 90, 91, 2022, 2023, 2024 and 2025. 93 and 94 of IC833? Yes Does the signal No appear at RA603, RA631, Check IC833 and related circuit of IC833. RA632 and RA633? Yes Replace LCD Panel. 5-4 No Picture (CVBS, S-VHS, Scart Video) Check Pin 13, 15 (RF_CVBS1, FR_CVBS2) of CN622? No Check Tuner, Scart1, Scart2 connector. Pin 9 (Scart1_Vin) of CN601 Pin 9 (Scart2_Vin) of CN621 Yes Check Pin