Samsung LE26R51BD free download

File name Troubleshooting.pdf

5 Troubleshooting 5 Troubleshooting 5-1 No Power LAMP off, power indicator LED red color? No Check a connection a power cable. Yes Does proper DC 12V appear at C801, C807? No Change a Assy PCB Power. Yes Does proper DC A3.3V, A5V appear at C865, C863? No Check a IC812, IC801. Change a main PCB ass'y. Yes Does proper DC 5V, 3.3V, 1.9V appear at C870, C861, C847? No Check a IC813, IC811, IC807. Change a main PCB ass'y. Yes A power is supplied to set? No Check a other function. (No picture part) Replace a lcd panel. 5-1 5 Troubleshooting 5-2 No Video (Analog PC Signal) Power Indicator is off. Lamp on, no video. Yes Check a PC source and check the connection of DSUB cable? Yes Does the signal appear at #3, 5, 7(R, G, B) of IC906? Yes Does the signal appear at #21,19,15(R,G,B)of IC906? Yes Does the digital data appear at output of DIN(0:23)of IC312? Yes Does the digital data appear at output of LVDS TX(FT250~253)? Yes Check a LVDS cable? Replace a lcd panel? No Please, Call to Samsung Co. LTD. No No No No No Input a analog PC signal and connected cable(DPMS). 1 PC cable. Change a PC cable. Change a main PCB ass'y. 1 Check a IC906. Change a main PCB ass'y. 2 Check a IC312. Change a main PCB ass'y. 3 Check a IC201. Change a main PCB ass'y. 5-2 5 Troubleshooting WAVEFORMS 1 R,G,B Output Signal of IC906 2 R,G,B Output Signal of IC312 3 Digital Output Data of IC201 5-3 5 Troubleshooting 5-3 No Video (HDMI-Digital Signal)_EXECT 23' Power Indicator is off. Lamp on, no video. Yes Check the connectionn of HDMI cable? Yes Does the digital data IC311 DIN(0:23), HDMI(Data, Clk +/-)? Yes Does the digital data appear at output of IC201 LVDS(FX250~253)? Yes Check a LVDS cable? Replacea lcd panel? No Please, Call to Samsung Co. LTD. No No No Input a HDMI cable. 4 Check a a IC 311. Change a main PCB ass'y. 3 Check a IC201. Change a main PCB ass'y. 5-4 5 Troubleshooting WAVEFORMS 3 Digital Output Data of IC201 4 Signal of HDMI(Data) 5-5 5 Troubleshooting 5-4 No Picture (Tuner_CVBS) Power Indicator is off. Lamp on, no picure. Yes Dose the signal appear at #14 of IC203? Yes Does the signal appear at #13 of IC203? Yes Does the digital data appear at output of FT250~FT253 ? Yes Check a LVDS cable? Replacea lcd panel? No Please, Call to Samsung Co. LTD. No No No Check a B+ voltage (#7 of Tuner) : 5V change a main PCB ass'y No Connect the RF cable and check RF signal. 5 5 Check a IC203. Change a main PCB ass'y. 3 Check a IC201. Change a main PCB ass'y. 5-6 5 Troubleshooting WAVEFORMS 3 Digital Output Data of IC201 5 Tuner_CVBS Output Signal 5-7 5 Troubleshooting 5-5 No Picture (Video_CVBS) Power Indicator is off. Lamp on, no picure. Yes Dose the signal appear at #11 of IC203? Yes Does the signal appear at #13 of IC203? Yes Does the digital data appear at output of FT250~FT253? Yes Check a LVDS cable? Replacea lcd panel? No Please, Call to Samsung Co. LTD. No No No Check a connection harness. No Check a A/V cable and video