Fault in the machine has determined D plate, considering no character, after the failure parts should in IC9500 level, in order to distinguish the fault in IC9500, or in the children of field control circuit IC9300, measuring IC9500 R, G, B output terminal voltage, voltage with the change of program have volatility, explain IC9500 signal output, failure in IC9300 and its peripheral circuit. Measure IC9300 the output voltage, are all 0 v, no signal output, confirmed the just judgment. Measuring IC9300 the voltage of power supply voltage and reset, oscillation waveform are normal, it is possible that IC9300 bad, IC9300 for BGA component, it is not easy to remove. The outside of the control circuit diagram found that IC9300 has two memory (IC9302 is 64 m, IC9303 for 32 MB flash memory). Previously had caused the blackout, bad memory try replacing IC9302 64 MB of memory, the machine back to normal, troubleshooting.96Hservice manual download site