Service Manual
Page 96
.... To control flicker, the printer gradually increases and decreases power to the heaters when they are turned on . Two thermistors monitor the surface temperature of the fuser control circuit and the low-voltage powersupply circuit. Lights attached to dc voltage when...formatter, sensors, and the ICs on the DC controller PCA 80 Chapter 5 Theory of operation The upper thermistor (TH1) monitors the fuser roller surface temperature and the lower thermistor (TH2) monitors the pressure roller surface temperature. Two thermal switches guard against overheating the three heaters by turning...
.... To control flicker, the printer gradually increases and decreases power to the heaters when they are turned on . Two thermistors monitor the surface temperature of the fuser control circuit and the low-voltage powersupply circuit. Lights attached to dc voltage when...formatter, sensors, and the ICs on the DC controller PCA 80 Chapter 5 Theory of operation The upper thermistor (TH1) monitors the fuser roller surface temperature and the lower thermistor (TH2) monitors the pressure roller surface temperature. Two thermal switches guard against overheating the three heaters by turning...