Analysis it is not power, leading the stern test and the main shaft drive circuit malfunction, may be a mode switch inside is dirty, poor contact, so that the CPU state detection error. Way to switch off, soaking in the anhydrous alcohol and turn it back and forth, repeated several times, dry installed after the test, but the fault is still, analysis may have grease inside because of the way switch, form a protective layer, immerse alone cannot be cleared. njtservice manual download site
 njtservice manual download site
 njtservice manual download site
And disassemble the way switch, and found there are a lot of fat, there is black blotch on several contact, using alcohol to clean again after oil into cloth rub-up, coated with a layer of vaseline again, and then turn the mode switch to the original position, trial installation, the machine back to normal. njtservice manual download site
After the clean or replace mode switch, if the screen appears "F04" or "F06" fault code, generally is the mode switch socket poor contact with floor, as long as the bottom outlet of the four spring piece is a bit pressing down on them, make contact with the mode switch good troubleshooting.njtservice manual download site