Service Manual
Page 96
... roller surface temperature and the lower thermistor (TH2) monitors the pressure roller surface temperature. The printer is designed to the heaters when the temperature rises abnormally. The ac power is turned on and off power to prevent flicker. Two thermistors monitor the surface temperature of ...Theory of the rollers. Low-voltage power supply unit The low-voltage power supply unit consists of the fuser roller, and the lower heater (H3) heats the pressure roller. Power-supply-block diagram Fuser control circuit Three heaters heat the fuser roller and pressure roller...
... roller surface temperature and the lower thermistor (TH2) monitors the pressure roller surface temperature. The printer is designed to the heaters when the temperature rises abnormally. The ac power is turned on and off power to prevent flicker. Two thermistors monitor the surface temperature of ...Theory of the rollers. Low-voltage power supply unit The low-voltage power supply unit consists of the fuser roller, and the lower heater (H3) heats the pressure roller. Power-supply-block diagram Fuser control circuit Three heaters heat the fuser roller and pressure roller...