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 |