Fuser temperature control The fuser temperature control maintains the temperature of the fuser heater at its targeted temperature. The DC controller monitors the FIXING TEMPERATURE (FSRTH) signals and sends the FIXING HEATER CONTROL (FSRD) signal according to the detected temperature. The fuser heater control circuit controls the fuser heater depending on the signal so that the heater remains at the targeted temperature.
Figure 1-9 Fuser-heater control circuit AC input Engine controller DC controller 14 Chapter 1 Theory of operation ENWW RL101 Fuser heater control circuit Fixing control Frequency detection circuit (220-240V model only) Relay control Fuser heater circuit safety circuit FSRD FU1 TH1 H1 Fuser film unit Pressure roller Fuser unit