HP LaserJet Pro P1606 HP LaserJet Professional P1560 and P1600 Series Printer - Page 35
Fuser temperature control,
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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 1-10 Fuser-heater control circuit AC input Fixing control Frequency detection circuit (220-240V model only) Engine controller FREQSNS DC controller RL101 Relay control circuit Fuser heater safety circuit RLYD Fuser heater control circuit FSRD FSRTH ENWW TP1 TH1 H1 Fuser film unit Pressure roller Fuser unit Engine-control system 17