Brother International FAX-170 Service Manual - Page 17

2.3

Power

Transmission

Mechanism

The

equipment

has

a

single

drive

motor

whose

power

transmission

route

can

be

switched

by

the

planetary

gear

train

and

the

solenoid.

This

switching

allows

the

equipment

to

function

in

four

operation

modes

(recording,

scanning,

copying,

and

cutter

driving

modes).

2.3.1

Structure

of

the

gear

train

The

gear

train

consists

of

two

groups

of

gears:

one

group

on

the

drive

unit

and

the

other

on

the

scanner

frame

ASSY.

Mounting

the

drive

unit

onto

the

scanner

frame

ASSY

makes

those

two

groups

of

gears

engage

with

each

other

so

that

the

rotation

torque

of

the

motor

on

the

drive

unit

is

transmitted

to

the

separation

roller,

white

pressure

roller,

and

platen.

Shown

below

are

a

group

of

gears,

the

motor

and

solenoid

on

the

drive

unit.

The

cutter

gear

(Q)

is

integrated

in

the

cutter

flange

(R)

whose

boss

is

placed

in

the

hole

provided

in

the

cutter's

upper

blade.

A

(Motor

gear)

Spring

N

I

Clutch

arm

Solenoid

o

J

(Gear

20)

K

(Gear

16/24)

C2

(Planet

gear

20A)

C1

(Planet

gear

20B)

B

(Sun

gear

18/82)

_2

P

(Gear

24)

Q

(Cutter

gear)

R

(Cutter

flange)

Boss

of

cutter

flange

----------

Drive

unit

Drive

Unit

(viewed

from

the

motor

mounting

side)

Shown

below

is

a

group

of

gears

on

the

scanner

frame

ASSY.

G

(Gear

18L)

F

(Gear

18)

E

(Gear

14/20)

D

(Gear

16)

L

(Separation

roller

gear)

M

(Gear

23)

N

(Flanged

gear

23)

(Front)

O

O

(White

pressure

roller

gear)

©

©

O

/

Scanner

Frame

ASSY

0

0

o

0

I

(Reverse

gear)

H

(Platen

gear)

(Front)

Scanner

frame

ASSY

III

-

5

Brother International FAX-170 Service Manual - Page 17

transmission

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