Samsung 225MW[9] free download

File name 225MW[9].pdf

4 Troubleshooting 4 Troubleshooting Notes: 1. Before troubleshooting, setup the PC's display as below. - Resolution: 1680 x 1050 - H-frequency: 65.290 kHz - V-frequency: 59.954 Hz 2. If no picture appears, make sure the power cord is correctly connected. 3. Check the following circuits. - No raster appears: Function PBA, Main PBA, IP Board - 5V develop but no screen: Main PBA - 13V, 5V does not develop: IP Board, Main PBA 4-1 No Power Check Function ass'y. Does proper 13V appear at No pin No. 5,6,7 of CN600? 1 Check IP Board Yes No Dose proper 13V appear at Check related circuit of CN600 C618? 1 Yes No Does proper 5V appear at pin Check related circuit of IC110 No.1 of IC110? 2 Yes No Does proper 1.8V appear at pin Check related circuit of IC109 No. 1 of IC109? 3 Yes Change main board for MICOM(IC300) problem 4-1 4 Troubleshooting CN600 C618 IC110 IC300 IC109 WAVEFORMS 1 2 3 4-2 4 Troubleshooting 4-2 No Video (ANALOG) Does led persists green No Check IP board light after power on? Yes Does proper 5V appear at No Check D-sub cable connection. pin No. 9 of CN101? Yes 4 5 No Does proper V and H-sync appear Check PC state. at C102 and C101? Yes Does proper clock signals appear at No Change main board pin NO.11,12,23,24 of CN400? because of scaler problem. Yes Check connection between main board and panel. Change Panel. CN400 C101, C102 CN101 4-3 4 Troubleshooting WAVEFORMS 4 5 4-4