Ricoh G-P3, Service Manual

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• If 250°C is detected, the thermostat is opened, and then the heating lamp power is cut off. SC545
shows.
• If the thermistor output is less than 0°C for six seconds, SC541 occurs.
• If the heating lamp gets full power for 8 seconds after the heating roller gets to the print ready
temperature, SC545 occurs.
Drive
After the toner image is transferred to the paper [A], it goes through the fusing unit. The fusing unit contains
the heating roller [B]. The heating lamp [C] applies heat to the heat roller. The heat roller applies heat to
the fusing belt [D] to melt the toner on the paper. The paper receives pressure between the fusing belt and
the pressure roller [E], and melted toner bonds to the paper.
When the paper goes out of the fusing unit, it goes to the exit tray. The fusing exit sensor [F] detects paper
jams.
6. Detailed Function Descriptions
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