Panasonic KX-FL513RU Service Manual page 172

KX-FL513RU
7.8.1. FAN CONTROL
This unit is equipped with fan to prevent the developing device from rising in temperature while printing.
The air is inhaled from the right side of the unit.
The fan rotates at high speed (Approx. 3000 rpm) while printing (controlling the developing device). After printing is finished, it
rotates at low speed (Approx. 2200 rpm) when the temperature of the unit goes up over a fixed one or depending on the number
of printed papers (frequency).
While the fan is rotating at high speed, the voltage of Approx. 21 V is supplied to the fan, however, while rotating at low speed,
the supply voltage is decreased to Approx. 12V.
Each signal wave is as follows:
1. High-speed rotation (typ. 3000 rpm)
2. Low-speed rotation (typ. 2200 rpm)
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