First, the boot can not be forced to use wired remote RM-95, you can open the write protect (0:01:01), and you can find the address of the page, but can not see any data (DATA whole is 00) which can determine the system control circuit did not work properly, it may not be crystal start-up or no data signal and clock signals. Disassemble the motherboard VC-254 board measure, basically have the power required for each voltage with an oscilloscope to measure the main CPU (IC4803) oscillation signal is normal, and then measuring machine core control IC (IC4501) 1,2 feet first foot without oscillation signal, and the circuit diagram that the oscillation signal IC (IC4902) crystal produced by the CAMERA control, measuring IC4902 1,2 feet without oscillation signal, and then measuring the crystal X4901 nor the ends, the first and second pin voltage is normal, replace the X4901 oscillator waveform measurements normal, test machine machine properly. Confirm that the machine has been repaired.QjCservice manual download site