T-14-12PS18 feed cover sensor detects the feed cover statePS22 front cover sensor detects the state (open/closed) of the front coverHU1 environment sensor detects the machine inside temperatureTS1 developing assembly toner sensor detects the toner inside the developing assemblyTS2 sub hopper toner sensor detects the tone inside the sub hopperTH1 fixing main thermistor detects the temperature of the fixing heaterTH2 fixing sub thermistor detects the temperature of the fixing heaterTH3 drum thermistor detects the temperature of the drumTP1 thermal switch cuts off the power to the heater in response tooverheatingNotation Parts No. I/O DC controllerPCB JAMPS1 FH7-7312 P028-5 1: paper absent J308PS2 FH7-7312 P019-5 1: paper absent J318PS3 FH7-7312 P028-6 1: level about 50% orless J308PS4 FH7-7312 P028-7 1: level about 50sheets or less J308PS5 FH7-7312 P019-6 1: level about 50% orless J318PS6 FH7-7312 P019-7 1: level about 50sheets or less J318PS7 FH7-7312 P021-0 0: paper present J307BPS8 FM2-2769 J303PS9 FK2-0149 P027-1 1: paper present J313 xx05PS10 FH7-7312 P030-4 1: detected J308 xx01PS11 FH7-7312 P019-4 1: detected J318 xx02PS13 FK2-0149 P029-2 1: paper present J303 xx07PS14 FK2-0149 P029-0 1: paper present J305 xx08Notation Name Description