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This unit is equipped with fan to prevent the developing device from rising in temperature while printing.
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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The solenoid drive circuit controls Register Solenoid, Pick up Solenoid and Bin Change Solenoid.
The solenoids are designed to be driven by +24V.
The diodes protect transistors from reverse generated voltage when solenoids are turned off.

REGISTER

PICKUP

BIN CHANGE

MODE

IC600_H1

Solenoid ON

High level

Solenoid OFF

Low level

MODE

IC600_R3

Solenoid ON

High level

Solenoid OFF

Low level

MODE

IC600_J3

Solenoid ON

High level

Solenoid OFF

Low level

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