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1. Functions

This motor functions for main operations including FAX transmission.
This feed document paper synchronized for reading.

2. Motor operation

During motor driving, pin 25 of ASIC IC106 becomes a high level, and Q109, Q101 turns ON.
As a result, +24V is supplied to the motor coil.
Stepping pulses are output from ASIC IC106 pins, 21, 22, 23, 24, causing driver IC103 pins, 
16 ~ 13 to drive the motor coil.
The motor coil is energized sequentially in 2 phase increments, which causes a 1-step rotation.
A 1-step rotation feeds 0.065mm of document paper.

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FUNCTION

MODE

PHASE PATTERN

SPEED

SCAN

FAX

STANDARD

2 phase

579pps 

SCAN

FAX/COPY

FINE/PHOTO

2 phase

579pps 

SCAN

FAX/COPY

SUPER FINE

1-2 phase

579pps 

SCAN

FAX/COPY

PHOTO WITH TEXT

2 phase

579pps

SCAN

DOC.PREFEED/EJECT

-

2 phase

579pps

STAND-BY

-

ALL PHASE OFF

-

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This FAN is used to radiate heat in the unit.
The signal level at pin 92/94 of IC107 becomes high, the FAN is activated. In this case, the pulse signal as shown below input to
pin 91 of IC107 and the rotation of the FAN is detected.

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)

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2. Low-speed rotation (typ. 2200 rpm)

The solenoid drive circuit controls the pick-up clutch.
The solenoid is designed to be driven by +24V, driven by IC107-17 pin.
Diode D600 protects Q607 from backward voltage when the solenoid is driven.

Mode

IC107-17 pin

SOLENOID ON

high level

SOLENOID OFF

low level