This machine belongs to panasonic M17 machine core, ac 220 v power supply to the main switch power supply circuit; The other all the way to the road, to provide boot voltage relay. After electrify, main power filter capacitance measurement C856 on both ends of the voltage of 0 v. Check relay RL801 not suck, relay working state is controlled by auxiliary circuit. Auxiliary power filter capacitance measurement C850 (see photo) on both ends of the voltage of 50 v, found R862 open circuit. After replacement, boot R862 burned immediately, change to this part of the circuit components one by one according to the drawing measurement, fault is still. Y5Jservice manual download site
 Y5Jservice manual download site
From the previous repair experience that sometimes can't depend entirely on the drawings. Carefully check the printing plate related circuit components, found a Q855 triode motherboard edge part into the R862 (no) on the drawing, testing the pipe has been breakdown, after replacement, the machine to work normally.Y5Jservice manual download site