Brother International FAX-1010 Service Manual - Page 35

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a

Main

PCB

Circuit

Diagram

315

®

Connector

for

the

CIS

®-1:

Power

for

the

CIS

LED

array

®-2:

Clock

output

®-3:

Trigger

signal

output.

One

shot

of

this

signal

triggers

a

line

of

scan.

®-4

LED

control

signal

output

circuit

which

controls

the

intensity

of

the

CIS

LED

array.

®-5:

Input

of

video

data

(VID)

to

the

FAX

engine

®-6:

Clamp

circuitry

that

gives

the

bias

level

to

the

amplifier

of

the

VID

input

circuit

according

to

the

CLMP

and

CPWM

signals

issued

by

the

CPU

(that

monitors

the

current

video

data

input)

for

compensating

the

DC

component

of

video

signals

for

the

next

scan

line.

Working

with

the

FAX

engine,

this

circuitry

carries

out

the

standard

scanning.

(This

circuitry

is

provided

on

the

FAX1170/1270/1010/1020/MFC1770/1870MC.)

®-7

SANYO

LSI

that

carries

out

the

high

-quality

scanning.

(Provided

on

the

FAX1570MC/1030/

MFC1970MC)

®

Connector

for

the

thermal

recording

head

®-1:

Power

5V

for

the

thermal

recording

head

®-2:

Thermister

signals

which

are

normalized

by

the

resistor

network

and

fed

to

the

FAX

engine

®-3:

Strobe

signals

®-4:

Data

signals

®-5:

Ribbon

sensor

signal

®

Connector

for

the

sensor

PCB

®-1:

Paper

-edge

sensor

signal

®-2:

Paper

ejection

sensor

signal

®

Document

front

and

rear

sensor

circuitry

that

is

active

only

while

the

SEON

signal

is

on.

C)-1:

PH2,

document

rear

sensor

C)-2:

PH1,

document

front

sensor

III

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23

Brother International FAX-1010 Service Manual - Page 35

h*Mivax.

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