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37

1. Functions

This motor functions for main operations FAX reception and copy printing.
This feed recording paper synchronized for printing.

2. Motor operation

Excitation pulses is output from G/A (IC107) pins 83, 84, 85 and 86. Then stepping pulses are output from driver IC (IC101)
pin No 2, 7, 8 and 13, and drives the motor coil.
During motor driving, pin 90 of G/A IC107 becomes a low level.
As a result, a current of about 1A are supplied to the motor coil.

FUNCTION

MODE

PHASE PATTERN

SPEED

CURRENT

PRINT

-

2 phase

824pps

1A

38

39

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.

40

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

-