The fault reasons of this are: PN7service manual download site
 PN7service manual download site
1, or driving voltage waveform. PN7service manual download site
 PN7service manual download site
2, drive the bad bad data or D board components. PN7service manual download site
 PN7service manual download site
Repair process: PN7service manual download site
 PN7service manual download site
1, the machine after the initialization, the change of the no. Basic data change. PN7service manual download site
 PN7service manual download site
2, test, maintenance manuals provide the voltage test points, each point of the dc voltage is normal. Eliminate bad driving voltage. PN7service manual download site
 PN7service manual download site
3, using the oscilloscope test TPSC1 wave type, wave type found abnormal (waveform as shown in figure, for the convenience of the difference between the oscilloscope timeline 1 ms/div), check IC6511 peripheral, found that there are about 5 k bootstrap capacitance C6511 leakage resistance, has been damaged. Basic returned to normal after replacing C6511 images. PN7service manual download site
 PN7service manual download site
 PN7service manual download site
4, due to the initialization, adjust the machine for relevant data recovery.PN7service manual download site