Brother 1020, 1030, 1170, 1270, 1570mc schematic

FACSIMILE EQUIPMENT

SERVICE MANUAL

MODEL: FAX[phone]MC

FAX[phone]
MFC1770/1870MC/1970MC

© Copyright Brother 1997
All rights reserved.
No part of this publication may be reproduced in any

form or by any means without permission in writing
from the publisher.

Specifications are subject to change without notice.

PREFACE

This publication is a Service Manual covering the specifications, construction, theory of opera­tion, and maintenance of the Brother facsimile equipment. It includes information required for
field troubleshooting and repair—disassembly, reassembly, and adjustment—so that service
personnel will be able to understand equipment function, to rapidly repair the equipment and
order any necessary spare parts.

To perform appropriate maintenance so that the facsimile equipment is always in best condition
for the customer, the service personnel must adequately understand and apply this manual.

This manual is made up of six chapters and appendices.

CHAPTER I. GENERAL DESCRIPTION
CHAPTER II. INSTALLATION
CHAPTER III. THEORY OF OPERATION
CHAPTER IV. DISASSEMBL Y/REASSEMBLY AND LUBRICATION
CHAPTER V. MAINTENANCE MODE
CHAPTER VI. ERROR INDICATION AND TROUBLESHOOTING

APPENDICES Circuit Diagrams

This manual describes the model and its versions to be destined for major countries. The specifications
and functions are subject to change depending upon each destination.

CHAPTER I.

GENERAL DESCRIPTION

CONTENTS

1. EQUIPMENT OUTLINE ................................................................................. I-1

1.1 External Appearance and Weight........................................................... I-1

1.2 Components............................................................................................ I-1

2. SPECIFICATIONS .......................................................................................... I-2

1. EQUIPMENT OUTLINE

1.1 External Appearance and Weight

The figure below shows the equipment appearance and approximate dimensions.

(Unit: mm)

Weight: Machine proper FAX1010: Approx. 5.0 kg (excluding a ribbon cartridge)

In package FAX1010: Approx. 8.7 kg

1.2 Components

The equipment consists of the following major components:

8.5"
A4

Function

Tel/Index

Resolution

Super

Mode

O. Scan

Hook

Hold

Redial/Pause

PRS

7

Speed Dial

*

Help

ABC

DEF

1

2

01

02

3

GHI

4

8

0

03

JKL

5

TUV

#

04

13

MNO

14

15

16

6

05

06

07

WXYZ

08

17

18

9

19

20

09

10

11

Copy

Shift

12

21

22

23

24

Set

Clear

A4

8.5"

IntelliFAX -1270

PLAIN PAPER FACSIMILE

Sort

Enlarge/
Reduce

Stop

Start

213 (H)

385 (D)

* 317 mm for FAX1010 which has

385.5 (W)*

no handset mount

Other models: Approx. 5.2 kg (excluding a ribbon cartridge)

Other models: Approx. 8.9 kg

Recording paper cover ASSY

Control panel
ASSY

Handset
(Not provided on
the FAX1010)

Main cover

Handset mount
(Not provided on
the FAX1010)

Side cover
(Provided only on
the FAX1010)

Power supply PCB

NCU PCB
Main PCB

Modular PCB

Bottom plate

Inner cover

Recording head
ASSY

Main frame

CIS unit

Document
ejection tray

I – 1

2. SPECIFICATIONS

Model FAX1170 FAX1270 FAX1570MC
Color Gray (1395) White (1397) White (1397)
Modem Speed 9600 bps 9600 bps 14400 bps
CCITT Group G3 G3 G3
Coding Method MH MH MH
Transmission Speed 15 sec. 15 sec. 9 sec.
Input/Output Width 8.5"/8.5" 8.5"/8.5" 8.5"/8.5"
ADF Capacity (pages) 20 20 20
Recording Paper Loadable 200 sheets 200 sheets 200 sheets
Paper Size Letter/Legal/A4 Letter/Legal/A4 Letter/Legal/A4
Ribbon Life (Letter-size print) 450 pages 450 pages 450 pages
Handset Yes Yes Yes
LCD Size 16 x 1 16 x 1 16 x 1
On-screen Programming Yes Yes Yes
Gray Scale 64 by Dithered 64 by Dithered 64 by E/D
Smoothing Yes Yes Yes
One-touch Dial 12 x 2 12 x 2 12 x 2
Speed Dial 26 36 100
Telephone Index Yes Yes Yes

Multi-resolution Transmission
FAX/TEL Switch Yes Yes Yes
Distinctive Ringing Yes Yes Yes
Next Fax-reservation Yes Yes Yes
Help Yes Yes Yes
TAD Interface Yes Yes Yes
Coverpage Yes, Super Yes, Super Yes, Super
Polling Type Sim/Del/Seq Sim/Del/Seq Sim/Del/Seq
Receive Password (password plus)
Delayed Transmission 3, timers 3, timers 3, timers
Call Reservation Yes Yes Yes
Call-back Message Yes Yes Yes
Speaker Phone Monitor Monitor Yes, Full-duplex
Activity Report Yes Yes Yes
Transmission Verification Report
Page Memory 512 KB (20 pages) 512 KB (20 pages) 1 MB (50 pages)
Out-of-paper Reception Yes Yes Yes
Quick Scan Yes Yes Yes
Super Quick Scan No No No
Broadcasting Yes Yes Yes
ECM Yes Yes Yes
Multi-transmission Yes Yes Yes
Multi-copying w/Sorting Yes Yes Yes
Enlargement/Reduction Ratio Yes (50-150%) Yes (50-150%) Yes (50-150%)
TAD Type No No DSP
OGM No No Yes
ICM Recording Time No No Yes, 30 min.
FAX Forwarding/Paging No Yes Yes
FAX Retrieval No Yes Yes
PCI (Missing link) Ready Ready Ready
Message Center No No Yes
Caller ID Yes Yes Yes
Fax-/Voice-on-demand No No Voice-on-demand
Mail Box No No Yes
Remote Control Yes Yes Yes
Toll Saver No No Yes
Memo/2-Way Recording No No Yes
Auto Reduction Yes Yes Yes
Confidential Mailbox No No No
Optional Memory No No No

Yes Yes Yes

Yes Yes Yes

Yes Yes Yes

I – 2

Model FAX1010 FAX1020 FAX1030
Color White (1138) White (1138) White (1138)
Modem Speed 9600 bps 9600 bps 14400 bps
CCITT Group G3 G3 G3
Coding Method MH MH MH
Transmission Speed 15 sec. 15 sec. 10 sec.
Input/Output Width A4/A4 A4/A4 A4/A4
ADF Capacity (pages) 20 20 20
Recording Paper Loadable 200 sheets 200 sheets 200 sheets
Paper Size Letter/Legal/A4 Letter/Legal/A4 Letter/Legal/A4
Ribbon Life (A4-size print) 420 pages 420 pages 420 pages
Handset No Yes Yes
LCD Size 16 x 1 16 x 1 16 x 1
On-screen Programming Yes Yes Yes
Gray Scale 64 by Dithered 64 by Dithered 64 by E/D
Smoothing Yes Yes Yes
One-touch Dial 12 x 2 12 x 2 12 x 2
Speed Dial 36 36 100
Telephone Index Yes (Not Super) Yes (Not Super) Yes (Not Super)

Multi-resolution Transmission
FAX/TEL Switch Yes Yes Yes
Distinctive Ringing Yes Yes Yes
Next Fax-reservation Yes Yes Yes
Help Yes, Simple Yes, Simple Yes, Simple
TAD Interface Yes Yes Yes
Coverpage Yes, Super Yes, Super Yes, Super
Polling Type Std/Sec/Del/Seq Std/Sec/Del/Seq Std/Sec/Del/Seq
Receive Password (password plus)
Delayed Transmission 3, timers 3, timers 3, timers
Call Reservation Yes Yes Yes
Call-back Message Yes Yes Yes
Speaker Phone Monitor Monitor Yes, Full-duplex
Activity Report Yes Yes Yes
Transmission Verification Report
Page Memory 512 KB (20 pages) 512 KB (20 pages) 1 MB (50 pages)
Out-of-paper Reception Yes (20 pages) Yes (20 pages) Yes (50 pages)
Quick Scan Yes (18 pages) Yes (18 pages) Yes (18 pages)
Super Quick Scan No No No
Broadcasting Yes, 60 locations Yes, 60 locations Yes, 124 locations
ECM Yes Yes Yes
Multi-transmission Yes Yes Yes
Multi-copying w/Sorting Yes Yes Yes
Enlargement/Reduction Ratio Yes (50-150%) Yes (50-150%) Yes (50-150%)
TAD Type No No DSP
OGM No No Yes
ICM Recording Time No No Yes, 30 min.
FAX Forwarding/Paging Yes/No Yes/No Yes
FAX Retrieval Yes Yes Yes
PCI (Missing link) Ready Ready Ready
Message Center No No Yes
Caller ID
Fax-/Voice-on-demand No No Voice-on-demand
Mail Box No No Yes, 5
Remote Control Yes Yes Yes
Toll Saver No No Yes
Memo/2-Way Recording No No Yes
Auto Reduction Yes Yes Yes
Confidential Mailbox No No No
Optional Memory No No No

UK, Sw., Holland (Ready for France) UK, Sw., Holland (Ready for France) UK, Sw., Holland (Ready for France)

Yes Yes Yes

Yes Yes Yes

Yes Yes Yes

I – 3

Model MFC1770 MFC1870MC MFC1970MC
Color White (1138) White (1138) White (1138)
Modem Speed 9600 bps 14400 bps 14400 bps
CCITT Group G3 G3 G3
Coding Method MH MH MH
Transmission Speed 15 sec. 9 sec. 9 sec.
Input/Output Width 8.5"/8.5" 8.5"/8.5" 8.5"/8.5"
ADF Capacity (pages) 20 20 20
Recording Paper Loadable 200 sheets 200 sheets 200 sheets
Paper Size Letter/Legal/A4 Letter/Legal/A4 Letter/Legal/A4
Ribbon Life (Letter-size print) 450 pages 450 pages 450 pages
Handset Yes Yes Yes
LCD Size 16 x 1 16 x 1 16 x 1
On-screen Programming Yes Yes Yes
Gray Scale 64 by Dithered 64 by Dithered 64 by E/D
Smoothing Yes Yes Yes
One-touch Dial 12 x 2 12 x 2 12 x 2
Speed Dial 36 36 100
Telephone Index Yes Yes Yes

Multi-resolution Transmission
FAX/TEL Switch Yes Yes Yes
Distinctive Ringing Yes Yes Yes
Next Fax-reservation Yes Yes Yes
Help Yes Yes Yes
TAD Interface Yes Yes Yes
Coverpage Yes, Super Yes, Super Yes, Super
Polling Type Sim/Del/Seq Sim/Del/Seq Sim/Del/Seq
Receive Password (password plus)
Delayed Transmission 3, timers 3, timers 3, timers
Call Reservation Yes Yes Yes
Call-back Message Yes Yes Yes
Speaker Phone Monitor Yes, Full-duplex Yes, Full-duplex
Activity Report Yes Yes Yes
Transmission Verification Report
Page Memory 512 KB (20 pages) 512 KB (20 pages) 1 MB (50 pages)
Out-of-paper Reception Yes Yes Yes
Quick Scan Yes Yes Yes
Super Quick Scan No No No
Broadcasting Yes Yes Yes
ECM Yes Yes Yes
Multi-transmission Yes Yes Yes
Multi-copying w/Sorting Yes Yes Yes
Enlargement/Reduction Ratio Yes (50-150%) Yes (50-150%) Yes (50-150%)
TAD Type No DSP DSP
OGM No Y es Yes
ICM Recording Time No Yes, 15 min. Yes, 30 min.
FAX Forwarding/Paging Yes Yes Yes
FAX Retrieval Yes Yes Yes
PCI (Missing link) Included (MFL3) Included (MFL3) Included (MFL3)
Message Center No Yes Yes
Caller ID Yes Yes Yes
Fax-/Voice-on-demand No Voice-on-demand Voice-on-demand
Mail Box No Yes Yes
Remote Control Yes Yes Yes
Toll Saver No Yes Yes
Memo/2-Way Recording No Yes Yes
Auto Reduction Yes Yes Yes
Confidential Mailbox No No No
Optional Memory No No No

Yes Yes Yes

Yes Yes Yes

Yes Yes Yes

I – 4

CHAPTER II.

INSTALLATION

CHAPTER III.

THEORY OF OPERATION

CONTENTS

1. OVERVIEW..................................................................................................... III-1

1.1 Functional Block Diagram ...................................................................... III-1

2. MECHANISMS................................................................................................ III-2

2.1 Transmitting Mechanism (Feeding and scanning documents) ............... III-2

2.1.1 Automatic document feeder (ADF).................................................. III-2

2.1.2 Scanner ........................................................................................... III-3

2.2 Receiving Mechanism (Feeding paper and printing data)...................... III-4

2.3 Power Transmission Mechanism ........................................................... III-5

2.3.1 Structure of the gear train ............................................................... III-5

2.3.2 Description of planetary gear system.............................................. III-6

2.3.3 Power transmission for four operation modes................................. III-7

[ 1 ] Scanning mode (Solenoid: OFF, Motor rotation : Reverse)...................... III-8

[ 2 ] Paper feeding/ejection mode (Solenoid: ON, Motor rotation : Reverse) III-9

[ 3 ] Recording mode (Solenoid: OFF, Motor rotation : Forward) .................... III-10

[ 4 ] Copying mode (Solenoid: ON, Motor rotation : Forward) ......................... III-12

2.3.4 Power transmission route ............................................................... III-14

2.4 Sensors and Actuators........................................................................... III-16

3. CONTROL ELECTRONICS........................................................................... III-19

3.1 Configuration........................................................................................... III-19

3.2 Main PCB................................................................................................ III-20

3.3 NCU PCB................................................................................................ III-27

3.4 Control Panel PCB................................................................................. III-29

3.5 Power Supply PCB ................................................................................ III-30

1. OVERVIEW

1.1 Functional Block Diagram

Control Panel

LCD

Scanner

CIS unit

Recorder

Recording head

Ribbon sensor

Main frame

Motor

Document

ejection tray

Modular PCB
(Cover sensor)

Main PCB

(Document front
and rear sensors)

NCU PCB

Power supply

PCB

Sensor PCB

(Paper-edge
sensor and paper
ejection sensor)

Ribbon cartridge

To PC

Line

AC

Handset

Hook switch
sensor

III – 1

2. MECHANISMS

The equipment is classified into the following mechanisms:

■ Transmitting Mechanism Feeding and scanning documents

■ Receiving Mechanism Feeding paper and printing data

■ Power Transmission Mechanism Switching the power transmission route

■ Sensors and Actuators

2.1 Transmitting Mechanism (Feeding and scanning documents)

The transmitting mechanism consists of the document stacker, automatic document feeder
(ADF), document feeding related rollers, scanner, and document sensors. (For details about
the sensors, refer to Section 2.4.)

For the drive power source, refer to Section 2.3.

Document
support

Document
stacker

Document

Separation roller

ADF parts

Scanner
(CIS unit)

Pressure roller,
rear

White pressure
roller

Pressure roller,
front

(Front)

Document
ejection roller

2.1.1 Automatic document feeder (ADF)

If the operator sets documents on the stacker and starts the transmitting operation, the ADF
(consisting of the separation roller and ADF parts) feeds those documents into the equip­ment, starting from the bottom sheet to the top, page by page. Each document advances to
the scanner, and then it is fed with the white pressure roller and document ejection roller.

III – 2

2.1.2 Scanner

The scanner uses a contact image sensor (CIS) unit which consists of an LED array illumi­nating documents, a self-focus lens array collecting the reflected light, a CIS PCB carrying
out photoelectric conversion to output picture element data, and a cover glass on which a
document advances. When the document passes between the white pressure roller and the
cover glass, it is scanned.

III – 3

2.2 Receiving Mechanism (Feeding paper and printing data)

The receiving mechanism consists of the recording paper cover ASSY, paper feed roller
ASSY, platen, thermal recording head, paper ejection roller, and sensors. (For details about
the sensors, refer to Section 2.4.)

Paper

Paper feed roller ASSY

Recording
paper cover
ASSY

Thermal ink ribbon

Recording head

Chute ASSY
Paper ejection roller

Platen

STEP 1: In the paper feeding mode
If the equipment receives data, the control electronics activates the solenoid and rotates the

motor counterclockwise to drive the paper feed roller (and paper ejection roller). This pulls in
a sheet of paper and feeds it until its leading edge reaches the point just before the printing
position.

(Front)

STEP 2: In the recording (platen drive & ribbon take-up) mode
The control electronics deactivates the solenoid and rotates the motor clockwise to drive the

platen gear and the ribbon take-up gear as well as the paper ejection roller. This feeds the
paper up to the printing position where the thermal recording head prints, as well as feeding
the thermal ink ribbon.

STEP 3: In the paper ejecting mode
The same operation as for STEP 1 takes place so as to eject the paper.

III – 4

2.3 Power Transmission Mechanism

The equipment has a single drive motor whose power transmission route can be switched by
the planetary gear systems and the solenoid. This switching allows the equipment to func­tion in four operation modes (scanning, paper feeding/ejecting, recording, and copying
modes). For the details about the planetary gear systems, refer to Subsection 2.3.2.

2.3.1 Structure of the gear train

At the left side of the equipment, the rotational torque of the motor on the main frame is
transmitted to the gears on the main frame and then to the gears on the platen frame. These
gears drive the document feeding/ejecting related rollers, paper feeding/ejecting related roll­ers, and the platen.

If the platen gear ("a" in the figure below) on the left end of the platen shaft rotates, the gear
33RB ("b") on the right end also rotates. This way, the rotational torque is transmitted to the
gears on the right side of the equipment.

At the right side of the equipment, the rotational torque is further transmitted via the friction
torque transmission ASSY to the ribbon drive gear ("e") which drives the ribbon take-up gear
in the ribbon cartridge.

Right side

d (Gear 18)

c (Gear 20/40)

b (Gear 33RB)

Left side

T (Paper feed roller gear, Gear 55)

Platen frame

(Gears 18/41)

e (Gear 46 of Friction torque

transmission ASSY)

Main frame

Platen frame

e (Ribbon drive gear, Gear 24)

W (Clutch gear ASSY)

V

U

X (Paper ejection roller gear, Gear 40)

a (Platen gear, Gear 23)

Z (Gear 33/45)

M (Gear 39)

C (Planet gear 20B of Arm B ASSY)

D (Gear 33)

F (Separation roller gear)

I (White pressure
roller gear)

S (Planet gear
34 of Arm P
ASSY)

R (Sun gear
39/24)

Main frame

Q (Gear 33)

P (Gear 18)

O (Gear 39)

Y (Planet gear 44 of
Arm C ASSY)

B (Sun gear 20/90)

Gear Train

III – 5

N (Sun gear
36/27)

E (Gear
20/40)

Clutch lever

A (Motor gear)

L (Planet gear 20A of Arm A ASSY)

G H J

: Gears on the main frame
: Gears on the platen frame

(Front)

K (Document
ejection roller
gear)

(Gears 14/20)

2.3.2 Description of planetary gear system

The equipment uses the following three planetary gear systems:

- Sun gear 20/90 ("B" in the figure given on the previous page) and its planet gears

- Sun gear 36/27 ("N") and its planet gear

- Sun gear 39/24 ("R") and its planet gear
This section describes the planetary gear system of the sun gear 20/90 ("B"). It consists of

the sun gear 20/90, two planet gears 20, arm A, and arm B, as shown below.

Planet gear 20B

Arm B

Sun gear 20/90

Planet gear 20A

Arm A

Motor gear

Planetary Gear System

If the motor rotates, the sun gear 20/90 rotates so that the rotational torque is transmitted to
the engagement between the sun gear and the planet gears 20. Since the arms and planet
gears are so designed that the moment of the arms is less than that of the planet gears, the
arms turn around the center shaft in the same direction as the sun gear 20/90.

If the planet gear(s) becomes engaged with any other gear so that the arm cannot turn fur­thermore, the rotational torque of the sun gear 20/90 is transmitted to that planet gear. Ac­cordingly, the planet gear starts rotation in the opposite direction of the sun gear 20/90.

III – 6

2.3.3 Power transmission for four operation modes

Depending upon the solenoid ON/OFF state and the motor rotation direction, the planetary
gear train switches the power transmission route for the four operation modes.

Solenoid ON/OFF state Motor rotation direction
Solenoid: OFF

Section y (to block the
stoppper of arm B)

Cutout x (engaged
with the stopper of
arm A)

Solenoid

Solenoid: ON

Section y (to block the
stoppper of arm B)

Clutch lever

Spring

Planet gear 20B

Arm B

Sun gear
20/90

Planet gear
20A

Forward
Reverse

Stopper of
arm B

Stopper
of arm A

Arm A

Motor
gear

Cutout x (engaged
with the stopper of
arm A)

Solenoid

Clutch lever

Spring

III – 7

[ 1 ] Scanning mode (Solenoid: OFF, Motor rotation: Reverse)

In the scanning mode, the control electronics deactivates the solenoid. When the motor ro­tates in the reverse direction, the clutch lever turns counterclockwise with the spring so that
its cutout x becomes engaged with the stopper of arm A. Once arm A is locked, the planet
gear 20A ("L") will not be engaged with any other gear but simply idle.

The motor's rotational torque turns the sun gear 20/90 ("B") clockwise so that the planet gear
20B ("C") transmits the torque to the separation roller gear ("F"), white pressure roller gear
("I") and document ejection roller gear ("K") via the several gears.

C (Planet gear 20B)

B (Sun gear 20/90)

L (Planet gear 20A)

Arm A Locked by Cutout

Solenoid

xx

x of Clutch Lever

xx

B (Sun gear 20/90)

Cutout x of clutch lever

Stopper of arm A

Clutch lever

F (Separation
roller gear)

C (Planet gear 20B)

I (White pressure
roller gear)

Solenoid

Active Gears

III – 8

D

L

Clutch lever

A (Motor gear)

G

H

E

J

K (Document
ejection roller
gear)

(Front)

[ 2 ] Paper feeding/ejecting mode (Solenoid: ON, Motor rotation: Reverse)

In the paper feeding/ejecting mode, the control electronics activates the solenoid to release
the stopper of arm A. When the motor rotates in the reverse direction, the sun gear 20/90
("B") rotates clockwise so that the planet gear 20A ("L") transmits the torque via the gear 39
("M") and other gears to the paper feed roller gear ("T") and paper ejection roller gear ("X").

Since the stopper of arm B is blocked by the section y of the clutch lever, the planet gear
20B ("C") is merely idle without engaging with any other gear.

Stopper of arm B

C (Planet gear 20B)

Section y of clutch lever

B (Sun gear 20/90)

L (Planet gear 20A)

T (Paper feed roller gear)

Stopper of arm A

Solenoid

Arm B Blocked by Section y of Clutch Lever

X (Paper ejection roller gear)

V

U

B (Sun gear 20/90)

W

Clutch lever

S (Planet
gear 34)

R (Sun gear 39/24)

Q

P

O

L (Planet gear 20A)

Active Gears

III – 9

C

N

Y

M

(Front)

Solenoid

Clutch lever

A (Motor gear)

[ 3 ] Recording mode (Solenoid: OFF, Motor rotation: Forward)

In the recording mode, the control electronics deactivates the solenoid. When the motor ro­tates in the forward direction, the clutch lever turns counterclockwise with the spring so that
its cutout x becomes engaged with the stopper of arm A. Once arm A is locked, the planet
gear 20A ("L") will not be engaged with any other gear but simply idle.

The motor's rotational torque turns the sun gear 20/90 ("B") counterclockwise so that the
planet gear 20B ("C") transmits the torque via the gear 39 ("M") and other gears to the platen
gear ("a") as well as the paper ejection roller gear ("X").

The platen advances recording paper and its paper movement rotates the paper feed roller.
Consequently, the paper feed roller shaft rotates faster than the paper feed roller gear ("T").

If the platen gear ("a" in the figure below) on the left end of the platen shaft rotates, the gear
33RB ("b") on the right end also rotates so as to drive the friction torque transmission ASSY
and ribbon drive gear ("e") that rotates the ribbon take-up gear ("f") in the ribbon cartridge, as
shown on the next page.

C (Planet gear 20B)

B (Sun gear 20/90)

L (Planet gear 20A)

T (Paper feed roller gear)

Solenoid

Arm A Locked by Cutout

X (Paper ejection roller gear)

V

U

Cutout x of clutch lever

xx

x of Clutch Lever

xx

a (Platen gear)

C (Planet gear 20B)

Stopper of arm A

Clutch lever

S (Planet
gear 34)

R (Sun gear 39/24)

W

Z

Q

P

Y (Planet gear 44)

N (Sun gear 36/27)

Active Gears on the Left Side

O

III – 10

B (Sun gear 20/90)

M

L

(Front)

Clutch leverSolenoid

A (Motor gear)

f (Ribbon take-up gear
in the ribbon cartridge)

Platen frame

b (Gear 33RB)

(Front)

Ribbon
drive gear
(Gear 24)

c

d

Friction torque
transmission
ASSY (Gear 46)

e

Active Gears on the Right Side

Main frame

III – 11

[ 4 ] Copying mode (Solenoid: ON, Motor rotation: Forward)

The control electronics activates the solenoid to release the stopper of arm A from the clutch
lever. When the motor rotates in the forward direction, the sun gear 20/90 ("B") rotates
counterclockwise so that the planet gear 20A ("L") transmits the torque to the document
scanner mechanism (e.g., the separation roller gear ("F"), white pressure roller gear ("I") and
document ejection roller gear ("K")) and the planet gear 20B ("C") transmits the torque to the
recording mechanism (e.g., the platen gear ("a"), paper feed roller gear ("T"), and paper
ejection roller gear ("X")).

If the platen gear ("a" in the figure below) on the left end of the platen shaft rotates, the gear
33RB ("b") on the right end also rotates so as to drive the friction torque transmission ASSY
and ribbon drive gear ("e") that rotates the ribbon take-up gear ("f") in the ribbon cartridge, as
shown on the next page.

Stopper of arm B

C (Planet gear 20B)

Stopper of arm A

Cutout x of clutch lever

B (Sun gear 20/90)

L (Planet gear 20A)

T (Paper feed roller gear)

Solenoid

Arm A Released from Coutout

X (Paper ejection roller gear)

U

V

W

a

Z

XX

X of Clutch Lever

XX

a (Platen gear)

C (Planet gear 20B)

Clutch lever

F (Separation roller gear)

I (White pressure
roller gear)

S (Planet
gear 34)

R (Sun gear 39/24)

Q

P

Y (Planet gear 44)

N (Sun gear 36/27)

Active Gears on the Left Side

O

B (Sun gear
20/90)

III – 12

M

Solenoid

L

E

Clutch lever

A (Motor gear)

L (Planet gear 20A)

G

H

J

(Front)

K (Document
ejection roller
gear)

f (Ribbon take-up gear
in the ribbon cartridge)

Platen frame

b (Gear 33RB)

(Front)

Ribbon
drive gear
(Gear 24)

Friction torque
transmission
ASSY (Gear 46)

e

Active Gears on the Right Side

c

d

Main frame

III – 13

2.3.4 Power transmission route

Rotation of the motor gear is transmitted as shown below.

U

V

T

S

R

Q

P

X

W

a

Z

O

Y

Gears on the Left Side

f

D

C

N

b

c

B

M

L

A

F

I

G

H

E

K

J

e

d

Gears on the Right Side

A: Motor gear
B: Sun gear 20/90
C: Planet gear 20B
D: Gear 33
E: Gear 20/40
F: Separation roller gear
G: Gear 14/20
H: Gear 14/20
I: White pressure roller gear
J: Gear 14/20
K: Document ejection roller gear
L: Planet gear 20A
M: Gear 39
N: Sun gear 36/27
O: Gear 39
P: Gear 18

Q: Gear 33
R: Sun gear 39/24
S: Planet gear 34
T: Paper feed roller gear
U: Gear 18/41
V: Gear 18/41
W: Clutch gear
X: Paper ejection roller gear, Gear 40
Y: Planet gear 44
Z: Gear 33/45
a: Platen gear, Gear 23
b: Gear 33RB
c: Gear 20/40
d: Gear 18
e: Friction torque transmission ASSY (Gear 46)

and ribbon drive gear (Gear 24)

f: Ribbon take-up gear in the ribbon cartridge

[ 1 ] Scanning Mode (Solenoid: OFF, Motor rotation: reverse)

A ➜ BC ➜ D ➜ E ➜ F ➜ G ➜ H

(Motor)

L (Idling)

(Separation
roller)

I (White pressure roller)
J ➜ K

(Document
ejection roller)

[ 2 ] Paper Feeding/Ejecting Mode (Solenoid: ON, Motor rotation: reverse)

C (Idling)

A ➜ BL ➜ M ➜ NO ➜ P ➜ Q ➜ R ➜ S ➜ T ➜ U ➜ V ➜ W ➜ X

(Motor)

Y (Idling)

(Paper feed
roller)

III – 14

(Paper ejection
roller)

[ 3 ] Recording Mode (Solenoid: OFF, Motor rotation: forward)

A ➜ BC ➜ M ➜ N

(Motor)

L (Idling)

Y ➜ Z ➜ a (Platen) ➜ b ➜ c ➜ d ➜ e ➜ f (Ribbon take-up gear)
O ➜ P ➜ Q ➜ R ➜ S ➜ WX (Paper ejection roller)

[ 4 ] Copying Mode (Solenoid: ON, Motor rotation: forward)

Y ➜ Z ➜ a (Platen) ➜ b ➜ c ➜ d ➜ e ➜ f (Ribbon take-up gear)

A ➜ B

(Motor)

C ➜ M ➜ N
L ➜ E ➜ F➜ G ➜ HI (White pressure roller) V ➜ U ➜ T

(Separation
roller)

O ➜ P ➜ Q ➜ R ➜ S ➜ WX (Paper ejection roller)

J ➜ K

(Document
ejection roller)

V ➜ U ➜ T

(Paper feed
roller, Idling)

(Paper feed
roller)

III – 15

2.4 Sensors and Actuators

This equipment has four photosensors and three mechanical switches (two for the FAX1010)
as described below.

Sensor name Type Located on
Document front sensor Photosensor (PH1) Main PCB

Document rear sensor Photosensor (PH2) Main PCB
Paper ejection sensor Photosensor (PH1) Sensor PCB

Paper-edge sensor Photosensor (PH2) Sensor PCB
Cover sensor Mechanical switch (SW1) Modular PCB
Ribbon sensor Mechanical switch (SW1) Recording head
Hook switch sensor* Mechanical switch (SW1) Hook switch PCB

• Document front sensor which detects the presence of documents.

• Document rear sensor which detects the leading and trailing edges of pages to tell the
control circuitry when the leading edge of a new page has reached the starting position
and when the scan for that page is over.

• Paper ejection sensor which detects whether a paper jam has occurred.

• Paper-edge sensor which detects the leading and trailing edges of paper and the pres­ence of paper as well as detecting whether the paper front cover is closed.

These photosensors are of a reflection type consisting of a light-emitting diode and a light­sensitive transistor. Each of them has an actuator separately arranged (see the next page),
except that the paper-edge sensor has two actuators for sensing the paper and the paper
front cover. When an actuator is not activated, its white end lies in the path of light issued
from the light-emitting diode and reflects its light so that the reflected light enters the light­sensitive transistor. If a document or paper comes in so as to activate the actuator, the
actuator's white end goes out of the light path and no reflected light enters the light-sensitive
transistor. This way, the sensor detects the presence of documents or paper.

• Cover sensor which detects whether the recording paper cover ASSY is closed.

• Ribbon sensor which detects whether the ink ribbon is loaded.

• Hook switch sensor* which detects whether the handset is placed on the handset mount.

The cover sensor has an actuator separately arranged (see page III-18). If the actuator is
activated, its lower end releases the cover sensor lever so that the sensor signals the detec­tion.

Path of actuator's end

Approx. 0.7 mm

* Not provided on the FAX1010

Light­emitting
diode

Light­sensitive
transistor

Glass

III – 16

(Front)

Main PCB

Front cover
sensing actuator

Document rear sensor

Document rear sensor actuator
Document front sensor
Document front sensor actuator

Paper-edge sensor actuator
Paper-edge sensor

Paper ejection sensor
actuator

Paper ejection sensor

(Front)

Recording head

Ribbon sensor

Ribbon sensor actuator

Location of Sensors and Actuators (1)

III – 17

Sensor PCB

Cover sensor actuator

Cover sensor

Cover sensor lever

Hook switch sensor actuator**

Hook switch sensor**

Hook switch PCB**

Modular PCB

Handset mount*

Location of Sensors and Actuators (2)

* Not provided on the FAX1010
** Not provided on the FAX1010 or those versions equipped with a Binatone handset

III – 18

3. CONTROL ELECTRONICS

3.1 Configuration

The hardware configuration of the facsimile equipment is shown below.

Line

External
telephone

Handset*

2-pin

4-pin

2-pin

NCU PCB

(Note)

(Note)
12-pin: U.S.A. versions

18-pin: European versions

Speaker

PC I/F

Motor

Modular
PCB

Solenoid

Recording head

2

*

8-pin

2-pin

6-pin

2-pin

11-pin

5-pin

Sensor
PCB

*

P2

ASIC

Main PCB

1

*

14-pin

Control
panel PCB

5-pin

7-pin

CIS unit

COG

14-pin

FPC key

2-pin

2-pin 4-pin 2-pin

*

3

Hook

*

switch
PCB

5

4-pin

4

*

Micro­phone

(Only on the FAX1570MC/1030/MFC1870MC/1970MC)

Power supply PCB

Ni-MH
battery

* Not provided on

the FAX1010

1

*

On the main PCB are these sensors:

• Document front sensor (PH1)

• Document rear sensor (PH2)

2

*

On the modular PCB is the cover sensor.

3

*

On the sensor PCB are these sensors:

• Paper ejection sensor (PH1)

• Paper-edge sensor (PH2)

4

*

On the hook switch PCB* is the hook switch sensor (SW1).

5

*

On the recording head is the ribbon sensor (SW1).

Configuration of Facsimile Equipment

III – 19

3.2 Main PCB

The main PCB, which is the nucleus controlling the entire operation of the equipment, con­sists of a FAX engine (ASIC), memories, MODEM, motor drive circuitry, sensor detection cir­cuitry, and analog circuits for scanning, recording, and power transmission shifting.

NCU

Power
supply

ROM

E2PROM

DRAM

FAX

engine
(ASIC)

Motor
driver

Control panel

Recording head

CIS

Motor

Speaker

Modular
PCB (for
PC I/F)

Hook
switch
sensor*

Sensors

** Not provided on the

FAX1010 or those
versions equipped
with a Binatone
handset

On the following pages, the main PCB circuit diagrams are described on the basis of the
FAX1570MC/1030/MFC1870MC/1970MC.

Sensors

2

E

PROM: Electrically Erasable Programmable Read-only Memory

DRAM: Dynamic Random Access Memory

Block Diagram of Main PCB

Ni-MH battery

Microphone

III – 20

12345678

L3 0

6

PANEL

P11
B5B-PH
WHI T E

GND FG

+5V

R8
*

5
1
3
2
4

GND

33A LI GT
42F DASNO
43D DAREC

42F DAST

E5V

E0V

E5V

R92
75F

R93
100F

R94
75F

E0V

C16
CC104

R96
75K

R95
10KF

C78
CC104

GND

7

+26V

E0V

C79
CC104

C14
C101

C50
0

C77
CC104

R7 4 70

15B PCLK
15B SDOT

R9 470

15B SDIN

C15

C13

C101

C101

+5V

#9

T7D60
R132
10K

R87 10K

17

ADPDMD

52C CLBSY
52D CLRXS

R133 10 k

32F RIBON

42F TLOF2

43B TADH
44D TXSL
45D HAFH

46E SPON

38C FRNT

37B FSEN
37B RSEN
17B CSEN
38C REAR

32E ST1
32E ST2
32E HDC
32E DIN
32E DOUT

34C E1CS
34C SMC
36C RDAT

23C MTI1
23C MTI0

32A RB
37D SEON

33B VI D

C39
CC104

MI O0 ( P WM)

18

MI O1 ( P WM)

19

MI O2 ( P WM)

20

MI O3

21

MI O4

22

MI O5

23

MI O1 1

24

MI O1 2

25

MI O1 3

205

MVDD

208

MVSS

204

MONMDCK

103

LIGT(PWM)

80

SEON(OD)

76

SEN2

77

SEN3

78

SEN4

79

SEN5

30

SEN6

31

SEN7

32

SEN8

92

ST1

91

ST2

93

HDC

94

DI N

90

DOUT

106

E1CS

107

SPSL( SMC)

102

RDAT

95

CL2

98

CL1

99

CLB

100

RB

101

DI F

104

TG

52

RDA61

56

CP1I

55

CP3I

54

CP4I

53

CPNN

50

RDA6

51

AVDD

58

AVDD

49

REFH

48

REFL

47

AGND VSS

59

AGND

AAPDMD
DPDMDT
DPDMCK
APDMCK
APDMDT

AMUTE

MEXTL

MUTE

MTXL

DA0
DA1
DA2
DA3
DA4
DA5
DA6
DA7
DA8
DA9

D00
D01
D02
D03
D04
D05
D06
D07

VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD

VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS

VSS
VSS

R59 10k
R68 10k

L5V

C70

C38

CC104

0

+5V

GND

GND

R86 *

C68
*

GND

34C,32A TG

33D CP3I

E5V

C73

C76

CC104

CC104

E0V

A

B

C

D

+5V

GND

E

F

+5V

5

Q6
RH5VA4 3

VCC
OUT
GND

GND

R70
200

16

ADMD

14

AAMD

R67

200

12

DMT

R66

300

11

DMK

R64

300

9

AMK

8

AMT

3

C5
C4
C3
C2
C1
C0

C3

2

C4

1

C5

6

C0

5

C1

4

C2

13

AMUT

7

MUT

207

L2 100

206

R117 20 0

109

DA0

R118

110

DA1

200

111

DA2

RA2

112

DA3

200

113

DA4

115

DA5

116

DA6

RA1

117

DA7

200

118

DA8

120

DA9

127

D0

128

D1

129

D2

130

D3

131

D4

133

D5

134

D6

135

D7

10
43
97
114
132
147
165
190
201

15
38
60
81
96

C43

C51

105

CC104

CC104

119
142
156
164
200

R90

1.5K

C65
CC104

C61
CC30P

TBUS 48A,58D

DABUS
26B,26E

DBUS 25E,36D

C59
CC104

RSTL 16A,47B, 14B,57E

R80 1M

XT1
CSA16 MX

GND

14A RSTL

#12 74VHCU04FS

R60 4.7K

R61

XT2

220

D57. 6 D6

C42
CC5P

C0V

C60

c63

CC104

CC104

2

1432

C71
CC102B

C66
CC104

#9
T7D60

44

143
141

R116 10 0

27B RMRD

27B ROMC

12B PCLK

+5B

12B SDOUT

12B SDIN

R88 100

14A RSTL

25C BARMRD
25C BARMWE

42F ADLC
46E VOL1
42F EAT

42B,38E CMLH

42E RDPS
43E PLS
43A TELL
17C HOOK
42F CI
42F TLOF

45E RNGO
46E VOL3
46D RNGL
42D OTO

32F LATC
33C CLMP
33C CPWM

53B CLSEL

25B EPCK
23F SOL RM3
38E PWON

34C SRAM
25B EPDO
23E MTVR

R131 10 K

L5V

+5V

L4
0

C72
CC104

GND

R114100

R79 *

R78 *

L5V

GND

L5V

P7 *
SHORT-2

GND

C0V

70

75
124
123
122
166
167

177
176
175

67

66

68

73

74

65

72

71

57

83

82
187
188
189
191
192
193
194
195

39

40
184
203

89
185
186

26

27

28

29

182
183
108

41
121

69

88

74VHCU0 4F S

5137

25D RAS

R82
0

25D CAS

C62
CC30P

R84
22K

R85 *

+5B

C67
CC104

GND

GND

8

4

C41
CC5P

GND

C69
CC104

RST

EXTL
XTL

RAS0
CAS
RMRD
RMWE
ROMC
IORD
IOWE

PCLK
SDOUT
SDIN

CK32ON
CK32

BAKCLK
BAENB
BAVDD
BAKSEL
BARMRD
BARMWE

LNCR(COMP)
SOL ( OD)
PWON
CML
DPS
PLS
TEL
HOOK
CI
TLOF
STD
RI NG
SPON
E2CS
CTXD

PO1
PO2
P03 ( OD)

RM1
RM2

RM4

PIO1
PIO2
PIO3( SRAM)
PIO4( OD)
PIO5
PIO6

EIT 1

#12

119

1

64

RSTL 14A

RTCCON

61

RVDD

RVDD

62

REXT

63

RXT

202

CRXD

199

CKS

196

TXD

197

RXD

198

CTS

84

MM1

85

MM2

86

MM3

87

MM4

45

TSTA

46

TSTB

125

IORQ

126

MREQ

140

CK16

144

CK8M

145

RD

146

WR

168

NMI

169

INT

170

BSAK

171

BSRQ

172

WAI T

173

RFSH

174

M1

136

A0

137

A1

138

A2

139

A3

148

A4

149

A5

150

A6

151

A7

152

A8

153

A9

154

A10

155

A11

157

A12

158

A13

159

A14

160

A15

161

MA1 6

162

MA1 7

163

MA1 8

178

ODPI O0

179

ODPI O1

180

ODPI O2

181

ODPI O3

42

VOL2 46E

ODPI O4

33

FDCLK

34

FDOUT

35

FDIN

36

CTSEL 53A,53B

FCS1

37

FCS2

+5V

L1
0

14

C40
CC104

LX
0

GND

R81 200

GND

CLRST

CLTXS

R91
0

CRXD
CKS
TXD
RXD
CTS

PBUS

17B

MM1
MM2
MM3
MM4

MBUS 23C

L5V

IORQ

R83 10K

MREQ
CK16

RD
WR

RBUS 3 4D

A0
A1
A2
A3
A4
A5
A6
A7
A8

A9
A10
A11

ABUS 26B,34D

CLCI

CLCK

CLBUS 51C

3

XT3
C-001R

C75

C74

CC10P

CC12P

GND

16B PBUS

L5V

R10

4.7K

12D CSEN

GND

R11

4.7K

15C HOOK

GND

+5B

+5V

D1

R125

*

0

A

RVDD

R127

C108

*

CC104

GND
C6
*

GND

PCI

+5V

CRXD

CKS

+5V

TXD

RXD

CTS

C17
*

GND

P15
IMSA-9110S-08L

+5V

HOOK
L5
MMZY601B

C18
CC101

GND

P14
B2B- PH
WHI T E

A

3

B

1

6

5

9

4

2

8

7

C

1

:

2

D

E

F

21 345678

Main PCB Circuit Diagram 1/5

1 FAX engine (ASIC) which integrates a CPU, digital portion of MODEM and gate array

for managing the I/Os, memories, and drivers.

2 XT1, oscillator for the CPU.
3 XT3, oscillator for the calendar clock.
4 XT2, oscillator for the MODEM.
5 Reset IC which turns on at the powering-on sequence and at any of the reset opera-

tions.

6 Connector for the control panel
7 Recording head drive voltage detector
8 Inverters
9 Connector for the modular PCB
: Connector for the hook switch PCB
A Backup circuit for the calendar clock

III – 21

12345678

PS

+26V

4

1

1

A

2

3

P0V
P3
B4B-PH

+9V

DA1
1SS378

3

5

7

BAT

1

2

GND

P6
B2B-PH
BLACK

MOTOR

3

4

2
6
5
1

P2
B6B-PH

+5V

R130

R110

20K

0

C106

P0V

SOL

P13
B2B-PH
BLUE

CC332B

R111

*

R2
1/2W
1

Q11 *

+26V

1

D3
1SS120

2

R112

*

B

C

D

E

F

+9V

C3

C96

16V47

CC104

GND

R113

1K

C91
CC104

R1
1/2W
1

P0V

Q2
DTD113 ZK

GND

2

#3 KIA7805

IN OUT

GND

C97

C5

CC104

16V47

+5V

4

Q12 RH5RA47

IN OUT

2
7
817

13

3
5
6

9
10
12
19
24

22

21

23

4
20
11

GND

#1
MTD2003F

OUT1
OUT2
OUT3I0IN3
OUT4
NC
NC
NC
NC
NC
NC
NC

6

NC

VR

C/ R

VSA
RSA
VSB
RSB

R119

*

C4
16V47

GND

27

MM1

IN1

26

MM3

IN2

MM2

16

MM4

IN4

25

18

I1

1

VMM

14

VMM

15

VCC

28

VCC

29

GND

30

GND

MTVR 15D

SOL 1 5D

+5V

15D EPCK

15D EPDO

+5B

MBUS 16B

15A RAS

MTI 0 12 E

MTI 1 12 E

+26V

+5V

C105

C90

CC104

CC104

C1

C107

35V/220

50v

105 C

CC104

P0V

15A CAS
15B BARMWE
15B BARMRD

14D DABUS

14E DBAS

C95
CC104

R120

4.7k

8

VCC VSS

6

SCL

A0

5

SDA

A1

7

TEST A2

#4
24LC16(1870MC)
24LC32(1970MC)

C94
CC104

#7 (1970MC)
HM514400

13

VCC26VSS

4

-RAS

23

-CAS

3

-WE

22

-OE

9

DA0

DQ1

A0

10

DA1

DQ2

A1

11

DA2

DQ3

A2

12

DA3

DQ4

A3

14

DA4

A4

15

DA5

A5

16

DA6

A6

17

DA7

A7

18

DA8

A8

5

DA9

A9

8

GND+5V

R76 STD MODEL=0

D. S MODEL= *

R77 STD MODEL=*

D. S MODEL=0

14D DABUS

16D ABUS

+5V

15A ROMC
15A RMRD

A0
A1

DA9

A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
DA3
DA4
DA5
DA6
DA7
DA8

4

1

2

3

#8

PD27C2001B-15

1

VPP

32

VCC

22

-CE

24

-OE

31

-PGM

12

A0

11

A1

10

A2

9

A3

8

A4

7

A5

6

A6

5

A7

27

A8

26

A9

23

A10

25

A11

4

A12

28

A13

29

A14

3

A15

2

A16

30

A17 D7

C58
CC104

9

GND+5V

16

GND

13

D0

D0

14

D1

D1

15

D2

D2

17

D3

D3

18

D4

D4

19

D5

D5

20

D6

D6

21

D7

A

B

C

GND+5B

D0

1

DA0

D1

2

DA1

D2

24

DA2

D3

25

DA3
DA4
DA5
DA6
DA7
DA8
DA9

C93
CC104

#5 (1970MC)
HM514400

13

VCC26VSS

4

-RAS

23

-CAS

3

-WE

22

-OE

9

A0

10

A1

11

A2

12

A3

14

A4

15

A5

16

A6

17

A7

18

A8

5

A9

GND+5B

D4

1

DA0

DQ1

D5

2

DA1

DQ2

D6

24

DA2

DQ3

D7

25

DA3

DQ4

DA4
DA5
DA6
DA7
DA8
DA9

C64
CC104

#6 (1870MC)
HM514800JP

1

VCC15VSS

14

VCC

8

-RAS

23

-CAS

7

-WE

22

-OE

10

A0

11

A1

12

A2

13

A3

16

A4

17

A5

18

A6

19

A7

20

A8

9

A9

A

GND+5B

28

VSS

6

NC

21

NC

D0

2

DQ1

D1

3

DQ2

D2

4

DQ3

D3

5

DQ4

D4

24

DQ5

D5

25

DQ6

D6

26

DQ7

D7

27

DQ8

D

E

:

F

21 345678

Main PCB Circuit Diagram 2/5

1 Connector for the power supply PCB which supplies 25V and 8V.
2 3-terminal regulator which eliminates unstabilized components of the +8V source to

generate stabilized +5V source.

3 Connector for the Ni-MH battery which supplies approx. 5V.

(Provided on the FAX1570MC/1030/MFC1870MC/1970MC)

4 3-terminal regulator which generates +5B source from +8V to back up the DRAM

(that stores received data).
(Provided on the FAX1570MC/1030/MFC1870MC/1970MC)

5 Connector for the motor
6 Motor driver
7 Connector for the clutch solenoid (that switches the power transmission).
8 E2PROM (32-kilobit for the FAX1570MC/1030/MFC1970MC, 16-kilobit for other mod-

els.)

9 ROM (2-megabit. Note that the qualification machines for demonstration have a 4-

megabit ROM.)

: DRAMs (1-megabyte, two 4-megabit chips) provided on the FAX1570MC/1030/

MFC1970MC.

A DRAM (512-kilobyte) provided on the MFC1870MC. The FAX[phone]/1020/

MFC1770 has its equivalent DRAM on location #7.

III – 22

1

1
1

2
2

2
2
2

2

12345678

+5V

#10
LC82102W

42

RSTH VDD

38

RSTL

39

AIN

40

TEMP

41

ATAP

37

ADREFL

45

PORT0

44

PORT1

35

PORT2

34

PORT3

43

AVDD

36

AGND

46

AGND

31

TRIG

30

ICLK

29

IOCS

28

MCS

27

IOE

23

ME

22

RD

21

WR

25

CLKI N

32

RESET

20

A0

19

A1

18

A2

16

A3

15

A4

14

A5

13

A6

12

A7

11

A8

SD/PD7

R5V

12D FSEN

12D RSEN

4

4

-1

-2

R129
100K

Q13
KRC107S

+5V

R128
100K

C112
*

C103

C104

CC102B

CC102 B

GND

+5V

R126

PH2

100K

SG-105F308

GND

+5V

R124

PH1

100K

SG-105F308

GND

GND

6

1

4

3

2

#13
UMG5N

GND

-2

1

+5V

C99
CC104

GND

RDAT 1 2E

DBUS 1 4E

-7

3

3

-1

12E SEON

33F HRLY

42E CMLL

GND

R0V

10
24

VDD

56

VDD

9

DGND

17

DGND

26

DGND
DGND
DGND

PD6
PD5
PD4
PD3
PD2
PD1

PD0
DACK
DREQ

MTP

SAMP

CLK1
CLK2

C98

49

CC104

64

47
48
50
51
52
53
54
55
57
58
59

GND

33
62

RS

63

SH

61
60

8

D0

D0

7

D1

D1

6

D2

D2

5

D3

D3

4

D4

D4

3

D5

D5

2

D6

D6

1

D7

D7

CIS

A

1

2

3

4

5

7

P9
B7B-PH

TM

9

10

11

8

7

2

3

6

1

5

4

P5
B11B-PH

+26V

R97 470

RB 12 E

R98 270

TG 12E

R5V

C82
CC104

R0V6

C8 16V/ 10

Q10
KRC107S

R102
10K

R0V

R0V

+5V

C88

C84

C89

CC101

CC101

CC101

GND

C86

C87

C83

*

*

*

GND

C109
CC102

R101
10K

C85
CC101

R105
10K

Q1
2SD1858

R3
1W
30

Q9
2SK1399

R5V

R0V

+5V

GND

R106 10 0

R104 20 0

R103 1K

R107
33KF

R108
100KF

R109
10KF

GND

Q7
2SC3052

R5V

Q8
2SC3052

LIGT 11C

-4

1

VID 12E

-5

1

CLMP 15D

R5V

R100

2.2K

CPWM 15D

R99 22K

C80
CC104

R0V

CP3I 12F

ST2 12D

DOUT 12 E

DI N 12E

HDC 1 2D

ST1 12D

LATC 15C

HRLY 36E

RI BON 1 2D

1

-6

R5V

R123
300

R122
200

R121
0

C102

C100

CC104

*

R0V

C81
CC104C716v

10

R0V

R5V

C101
CC104

R0V

12E TG
12E SMC
12E E1CS
15D SRAM

IORQ
MREQ
RD
WR
CK16

16B RBUS

14A RSTL

A0
A1
A2
A3
A4
A5
A6
A7
A8

16D ABUS

-1

-2

-3

B

1

C

2

D

-1

-2

-3

E

-4

-3

-5

F

+26V

REAR 12D

FRNT 12D

4

PWON 15 D

CMLH 15B

3

SENSOR

P1
B5B- PH
BLACK

A

5

2

4

1

3

B

C

D

E

F

21 345678

Main PCB Circuit Diagram 3/5

1 Connector for the CIS

1-1: Power for the CIS LED array
1-2: Clock output
1-3: Trigger signal output. One shot of this signal triggers a line of scan.
1-4 LED control signal output circuit which controls the intensity of the CIS LED array.
1-5: Input of video data (VID) to the FAX engine
1-6: 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 FAX[phone]/1020/MFC1770/1870MC.)

1-7 SANYO LSI that carries out the high-quality scanning. (Provided on the FAX1570MC/1030/

MFC1970MC)

2 Connector for the thermal recording head

2-1: Power 5V for the thermal recording head
2-2: Thermister signals which are normalized by the resistor network and fed to the FAX engine
2-3: Strobe signals
2-4: Data signals
2-5: Ribbon sensor signal

3 Connector for the sensor PCB

3-1: Paper-edge sensor signal
3-2: Paper ejection sensor signal

4 Document front and rear sensor circuitry that is active only while the SEON signal is on.

4-1:PH2, document rear sensor
4-2:PH1, document front sensor

III – 23

12345678

R26 75K

4

C25 CC221

R29 56K

6

-

7

5

+

R30

#18

4.7K
I324

AREF

C28
CC105(2125CHIP)

43

C

C9
16V10

R89

3.3K

C45
CC104

R62
100K

R36
1K

Q5 KRC1 07 S

C44
CC221

C48
CC104

AREF

R34
300

M0V

M0V

R63 1K

C46

D2

CC103B

HZS5C

M0V

-3

2

RNGL 1 5C

9

CNT

3

1

5

#19

0

4053

R32
100K

15B VOL1

-1

15E VOL2

-2

15C VOL3

-3

12D SPON

+26v

C24
50V

C11

CC104

35V10

M0V

C49
CC102B

R65
56K

:

5

#15
TC35133F

3

6

DPDMCK

TXOUT

7

DPDMDT

9

APDMCK

10

APDMDT

11

C3

12

C4

13

C5

5

MUTE

8

-PD
+5V

1

VDD

15

RXI NA

16

RXI NB

2

VBIAS

AREF

+9V

#2
NJM38 6M

3

R35
12K

M0V

GND

R134
1K

C47
CC104

4

VSS

14

VSS

MOV

C111
CC104

GND

8

C2

762

10V100

­5

1

+

8

4

R115

C92

33K

CC103B

D10
1SS120

C113

( 5 mm)

16V10

GND

DMK

DMT

AMK

AMT

C3

C4

C5

MUT

RSTL 14A

TBUS 14D

GND

9

SP

P4
B2B- PH
WHI T E

A

B

C

D

1

2

E

F

R15 1.5 K

C20 CC681

R23 56K

R31 10K

13

-

14

R21 10K

12

+
#18
KI3 24

R22
1/10W
1K

M0V

CMLH 15C

M0V

11

CNT

13

1

14

C

#19

0

4053

R74
100K

53B CTSL

-2

2

D7 1SS1 20

D4 *

R13 0

R18 0

D6 1SS1 20

D5 *

C21 CC681

R24 150K

9

-

8

10

+

R16

R14

4.7K

M0V

R12 100K

C19
CC104

M0V

+5V

GND

+26V

#18

0

KI324

AREF

R19 *

R17
*

Q4 *

AREF

OTO 15C

+26V

D9
1SS120

R5 1 K

PLS 15 C

+5V

CMLL 36E

R4

R6

R37

1K

22K

22K

TLOF 15C

TLOF2 12D

CI 15C

C12
CC103B

GND

A

B

C

D

E

F

1

NCU

9

6

7

5

1

10

11

12

3

8

13

14

16

17

18

2

15

4

P10
IMSA-9110S-18L

SL

RL1

RL2

TLSL 51B,53 B

Q3
KRC107S

M0V

C110
CC104

RDPS 1 5C

EAT 15 B

ADLC 15B

DAST 1 1D

DASND 1 1C

C27 CC104

+5V
+26V

R20
*

D8
*

R25 200K

2

15

2

1

C22 CC103B

DAREC 1 1C

-1

TELL 15 C

10

CNT

2

0

CTSL 53B

C

1

#19

1

R33 1.5 K

4053

TADH 12C

10

CNT

C57

0

CC104

1512

C

#17

1

4053

C23 *

R28 43K

R71
27K

2

­1

3

+

R27

#18

4.7K

KI324

AREF

6

MOV

7

TLRL 53A

CTRL 51A,53B

3

R72 1.5 K

R73 1.5 K

-1

13

1

0

55D HFRL

TXSL 1 2C

11

CNT

14

C

#17

4053

R75

1.5K

5

3

15C RNGO

HAFH 12C

9

CNT

0

412

C

#17

1

4053

-2

:
:
:

+5V

16

#19

C26
CC104

4053

678

GND

M0V

M0V

+5V

16 4

#17

C56
CC104

4053

678

M0V

#18
KI3 24

11

21 345678

Main PCB Circuit Diagram 4/5

1 Connector for the NCU
2 Analog signal selectors

2-1: Selects either input signals from the handset or those from the MODEM.
2-2: Selects either RL1 or RL2 signals inputted from the communications network.
2-3: Selects either sound signals (e.g., alarm beeps, key clicks and ringer sounds)

generated by the FAX engine or signals selected by 2-2.

3 Voice switching analog selectors

3-1: Switches between the output line and input line for monitoring. When

switched to the output line, this selector allows FAX sending operation to be
monitored; when switched to the input line, it allows received voices to be
monitored.

3-2: Selects either voice signals inputted from the communications network or re-

corded voice signals inputted from the microphone or handset through the
MODEM.

4 Amplifier circuit for signals outputted from the MODEM.
5 Analog front end IC which processes the analog I/O signals from/to the MODEM.
6 Amplifier & shaper circuit for signals inputted from the communications network.
7 Telephone circuit for transmitting signals.
8 Speaker amplifier circuit which amplifies sounds issued from the above analog signal

selector 2-3 and feeds them to the speaker.

III – 24

9 Connector for the speaker
: Speaker volume control circuit

:-1: VOL1 OFF ON ON
:-2: VOL2 OFF OFF ON
:-3: VOL3 OFF OFF ON

Speaker volume High Medium Low (ON: Closed OFF: Opened)

III – 25

12345678

A

B

C

R55 75K

C35 CC221

R48 56K

6

-

7

5

+

R47

#14

4.7K
BA10358F

HREF

16V10

C52
CC104

HREF

R69

C53

100K

CC221

C10

C55
CC104

M0V

M0V

C29
CC104

2

R53 *

44D HFRL

TLSL 51B, 53B

#14
BA10358F

4

+5V

C34
CC104

M0V

D

C33
CC681B

C37 681B

R57 100 K

2

­1

3

+

R58

#14

4.7K

BA10358F
R54
100K

HREF

MOV

+5V

16 8

#11
4053

678

M0V

+5V

MI C

RL1

6

RL2

E

P12
B2B- PH
RED

7

1

R44

C31

R43

8.2K

CC104

10K

R45

C32

R46

8.2K

CC104

10K

MOV

F

C36
CC102B

3

#16

TC35133F
R56
56K

3

6

DPDMCK

TXOUT

7

DPDMDT

9

APDMCK

10

APDMDT

11

C3

12

C4

13

C5

5

MUTE

8

-PD
+5V

1

VDD

15

RXI NA

16

RXI NB

2

VBIAS

HREF

C54
CC104

4

VSS

14

VSS

MOV

DMK

ADMD

AMK

AAMD

C0

C1

C2

AMUT

RSTL 14A

TBUS 14D

A

B

C

D

E

F

21 345678

Main PCB Circuit Diagram 5/5

1 Connector for the microphone
2 Voice signal amplifier circuit

These are provided on the FAX1570MC/
1030/MFC1870MC/1970MC.

3 Analog portion of MODEM

III – 26

3.3 NCU PCB

The NCU PCB switches the communications line to telephone or built-in MODEM, under the
control of the main PCB.

123

1

RA351X2

A

SBT0260X2
or
FL5R200PNX2

JW16

A

SBT0260X4
or
FL5R200PNX4

A

FG

FG

8

7

2

A

3

4

5

4

B

3

4-4PMJ

2

C

3

4
1

A

D

3. COMPONENTS IN PARENTHESIS NOT TO BE MOUNTED.

+26V

CR1
MZF-24HG

or

OUAZ-SS-124D

+

-

4

3

V1

21

TELOFF

4

3

S0V

+5V

C

B

E

S0V

SREF

S0V

+26V

6

NCUSL

TELSL

TELRL

TELOFF

+26V

+5V

S0V

RL1

PLS

CI

RL2

CML

+5V

S0V

6033B-12Z

A

B

C

P1

D

45

2

CML

S0V

FG

+5V

8

or

BA10358

4

S0V

4

S0V

3

4

S0V

5

PLS

1

2

S0V

R24
JW

6

4

5

5

1

2

9

TELRL

TELSL

RL2

REF

REF

4

CI

S0V

3

631

+26V

JW9

S0V

+5V

SREF

S0V

53

42

REF

421

:

REF

123 56

4

NCU PCB Circuit Diagram (U.S.A. versions)

1 Surge absorbers
2 Line relay (CML relay)
3 Line transformer
4 Circuit related to the line transformer
5 High-impedance transformer circuit
6 Calling signal detector
7 Loop current detector
8 Dial pulse generator
9 Telephone circuit
: Reference voltage generation circuit for the operational amplifiers in 4 and 9
A Noise filters (provided on the FAX1570MC/MFC1870MC/1970MC)

III – 27

LINE

TAD
BI NATONE

CN3
4-4PMJ

2

A- OUT

S

E

JW8
(10)

JW11
(10)

JW9
(10)

JW10
(10)

1

2

S0V

P1
B2B- PH

CH2

E

+5V

S0V

SOV

4

7

5

TELOFF1

6

3

2

1

+

1

4

-

2

3

TELRL

­+

S0V

D

G

S

+

+

+5V

C

C

C

C

DASND

-

M

E

B
M

B

M

B
M

B

-

CML

RDPS

S0V

+5V

S0V

S0V

S0V

RDPS

9

CML

+5V

S0V

TELOFF1

DAST

RDPS

EARTH

TELRL

ADLC

DASND

P2
IMSA-6033B

-18Z

8

2

RL1

6

PLS

3

17

13

20

14

19

RL2

7

1

16

5

18

4

POL

15

10

11

12

1

6

4

3

REF

136

4

REF

REF

REF

A- OUT

-

2

1

+

3

REF

S0V

+5V

S0V

­+

R27
10K

+5V

S0V

S0V

414

4

1

1

33223

2

S0V

S0V

S0V

-

+

+5V

S0V

+26V

FG

III – 28

1.6 Paper Feed Roller ASSY and Paper Feed Sub Chute

(1) Remove the front cover sensing actuator from the paper feed roller shaft by pulling up

the actuator's rear edge as shown below.

Paper feed roller ASSY

(Front)

Platen frame

Front cover sensing
actuator

Pull up here
to remove.

Boss of the paper­edge sensor actuator

Front cover sensing
actuator

(2) At the left end of the paper feed roller ASSY (when viewed from the rear), remove the

bushing by pulling its pawls outwards.

(3) At the right end, remove the paper feed roller gear (Gear 55) by pulling its pawl out-

wards.
Next, pull the paper feed roller shaft to the right until the left end of the shaft comes out

of the main frame and then tilt the shaft to the right so that the bushing-fixed end can
pass through the lower hole, and take it out to the left.

Paper feed roller ASSY

Bushing

Paper feed roller
gear (Gear 55)

Pawled bushing

Lower hole

(Rear)

IV – 12

(4) At the either end of the paper feed sub chute, release the latch from the paper feed

chute with a flat screwdriver as illustrated below, and then pull up the paper feed sub
chute.

Paper feed sub chute

Slot provided
in the paper
feed chute

Platen frame

Latch

Leading-edge sensor
actuator

Sub chute
film

Latch

Paper feed
chute

(Rear)

Latch

■ Reassembling Notes

• When setting the paper feed sub chute, push the paper-edge sensor actuator into the
home position.

• Set the paper feed sub chute so that the sub chute film comes into the slot provided in the
paper feed chute.

IV – 13

• When setting the paper feed roller ASSY at the left side of the platen frame, turn up the
planet gear 34 of the arm P ASSY so that the planet gear 34 comes above the sun gear
39/24 and becomes engaged with the paper feed roller gear (Gear 55), as illustrated be­low.

Clutch gear ASSY

Gears 18/41

Platen frame

Planet gear 34

Sun gear 39/24

Paper feed
roller gear
(Gear 55)

• When setting the front cover sensing actuator onto the paper feed roller shaft, make sure
that it supports the boss of the paper-edge sensor actuator as shown on the previous
page.

IV – 14

1.7 Paper Feed Chute, Sensor PCB, and Paper-edge and Paper Ejection Sensor
Actuators

(1) Remove the two screws.
(2) Remove the sensor PCB by releasing the two latches.
(3) Disconnect the main-sensor harness from the sensor PCB.
(4) Pull up the lead wires of the main-sensor harness out of the sheath, and then take out

those wires (not the sheathed section) from the clamp of the paper feed chute.

(5) Take out the paper feed chute.

Pull up the
lead wires
out of the
sheath.

Paper feed chute

Main-sensor harness

Platen
frame

(Rear)

Sensor PCB

Clamp (on the
paper feed chute)

Platen frame

Main-sensor
harness

IV – 15

(6) Remove the paper-edge sensor actuator by pulling the support "x" outwards.
(7) Remove the paper ejection sensor actuator by pushing the hook "y" from the rear of the

paper feed chute.

Paper ejection sensor actuator

Paper ejection sensor (PH1)

Latch

Latch

Paper ejection sensor
actuator

Paper feed
chute

Paper ejection sensor (PH1)

Sensor
PCB

Paper-edge sensor (PH2)

Paper-edge sensor
actuator

Hook "y"

Support "x"

Separator pad

(Rear)

Spring

Sensor PCB

Paper-edge sensor (PH2)

(Rear)

Main-sensor harness connector

(8) Pull up the separator pad while squeezing it to the right or left. The spring also comes

off.

■ Reassembling Notes

• Make sure that the paper ejection sensor actuator is set on the sensor PCB.

• As illustrated on the previous page, route the main-sensor harness through the cutout of
the platen frame. When routing it through the clamp of the paper feed chute, first put the
lead wires only into the clamp and then pull up the vinyl sheath.

IV – 16

1.8 Paper Ejection Roller

(1) At the left end of the paper ejection roller (when viewed from the rear), remove the

bushing by pulling its pawls outwards.

(2) At the right end, remove the paper ejection roller gear (Gear 40) by pulling its pawl out-

wards. Next, take out the paper ejection roller together with the bushing and the curved
washer.

Pawled
bushing

Paper ejection roller

Curved washer

Bushing

Paper ejection
roller gear
(Gear 40)

Platen
frame

(Rear)

IV – 17

1.9 Gears on the Platen Frame

Paper ejection roller gear
(Gear 40)

Gears 18/41

Clutch gear ASSY

Paper feed roller gear

Planet gear 34 of
the arm P ASSY

Sun gear 39/24

(Gears 18/41)

U

V

W (Clutch
gear ASSY)

Platen frame

X (Paper ejection roller
gear, Gear 40)

T (Paper feed roller gear, Gear 55)

Platen frame

S (Planet gear
34 of Arm P
ASSY)

R (Sun gear
39/24)

IV – 18

a (Platen gear,
Gear 23)

1.10 Control Panel ASSY

(1) Remove the ROM cover, referring to Section 1.1, steps (1) and (2).
(2) Disconnect the main-panel harness and the main-mike harness (for the FAX1570MC/

1030/MFC1870MC/1970MC) from the main PCB.
(3) Slightly open the control panel ASSY as shown below.
(4) Push the right and left arms of the control panel ASSY outwards with your thumbs to

unhook them from the bosses provided on the inner cover, then slide the control panel

ASSY to the rear.

Main-panel harness

Main-mike harness

MFC1870MC/1970MC)

(for the FAX1570MC/1030/

Main-panel harness

Main-mike harness (for the FAX1570MC/

1030/MFC1870MC/1970MC)

Control panel
ASSY

Arm of the control
panel ASSY

Boss provided on the
inner cover

IV – 19

FAX[phone]/1020/MFC1770

FAX1570MC/1030/MFC1870MC/1970MC

(NCU connector)

P2

(Modular PCB
connector)

■ Reassembling Notes

• After installation, check the routing of the main-panel harness and the main-mike harness

(only for the FAX1570MC/1030/MFC1870MC/1970MC), referring to Section 1.29.

Main-panel
harness

(NCU
connector)

Main-mike
harness

Main-panel

P3

P7

P5P4

P1

P8

P9

P10

P11

harness

(Modular
PCB

P1

P10

P11

P13

P12

P14

P15

P5

P2

P6

P3

P4

connector)

P12

(Front)

Main PCB

P9

(Front)

Main PCB

IV – 20

1.11 Panel Rear Cover and Control Panel

(1) Place the control panel ASSY upside down.
(2) Remove the ADF parts, the pressure rollers and anti-static brush from the panel rear

cover. Once removed, the ADF parts will become unusable and new parts should have

to be put back in.
(3) Remove the four screws from the panel rear cover.
(4) Insert the tip of a flat screwdriver between the front edge of the panel rear cover and

the control panel, then unhook the panel rear cover from the eight "X" latches provided

on the control panel. Lift up the panel rear cover.
(5) To disconnect the main-panel harness from the control panel PCB, take off the rubber

foot. Once removed, the rubber foot will become unusable and new parts should have

to be put back in.
(6) To take out the control panel PCB and the FPC key, unhook the PCB from the two

latches ("Y" on the FAX[phone]/1020/MFC1770, "Z" on the FAX1570MC/1030/

MFC1870MC/1970MC) on the control panel. Unlock the LCD cable connector and dis-

connect the LCD flat cable.
(7) To separate the FPC key from the control panel PCB, unlock the FPC key connector

and disconnect the FPC key.

Anti-static brush

Pressure roller, front

Spring plate A
Separation rubber
Spring plate B

ADF parts

Pressure roller, rear

Main-panel harness

Rubber foot

Microphone
(Provided on the FAX1570MC/
1030/MFC1870MC/1970MC)

Panel rear cover

FPC key

Control panel PCB

(FAX[phone]/1020/MFC1770)

FPC key connector
Control panel PCB

(FAX1570MC/1030/MFC1870MC/
1970MC)

LCD cable connector

8 "X" latches

"Z"

Control panel
(placed upside down)

"Z"

(Rear)

LCD

2 "Y" latches

IV – 21

(8) To take out the LCD, remove the control panel PCB and the FPC key in step (6). As

shown below, insert the tip of a flat screwdriver under clamp "D" in the direction of arrow

F and push up clamp "D" slightly to release the LCD from clamp "C." In the same way,

insert the screwdriver under clamp "A" to release the LCD from clamp "B."

Then push out the LCD with your fingers in the direction of arrow R.

F

"A"

Flat screwdriver

R

"B"

(Rear)

LCD

"C"

F

R

"D"

■ Reassembling Notes

• To put the LCD back into place, insert the tip of a flat screwdriver under clamp "D" (see

the above illustration) in the direction of arrow R, push up clamp "D" slightly, and then put
the right edge of the LCD under clamp "D." In the same way, insert the screwdriver under
clamp "A" to put the left edge of the LCD under clamp "A."

Then push the LCD into place with your fingers in the direction of arrow F.

• When handling the LCD, take care not to scratch or damage the panel sheet. Replace it

if scratched or damaged.

• A new LCD is covered with a protection sheet. Before installing it, remove the protection

sheet.

• After connecting the main-panel harness to the control panel PCB, be sure to attach a

new rubber foot on the top of the connector as shown below.

(Top view)

Rubber foot

Rubber foot

(Side view)

The edge of the rubber foot should not protrude
from this edge of the connector housing.

Align this edge of a rubber foot
with the edge of the connector
housing.

Should be flush.

• When setting the panel rear cover onto the control panel, pass the main-panel harness

and main-mike harness (provided on the FAX1570MC/1030/MFC1870MC/1970MC)
through the cutout provided in the panel rear cover.

IV – 22

1.12 Inner Cover

(1) Remove the four screws.
(2) While lifting up the inner cover, release the five latches with the tip of a flat screwdriver.

Inner cover

5 latches

IV – 23

1.13 White Pressure Roller and CIS Unit

(1) Swing the tabs of the bushings R and L towards you to the release position, and then

lift them up together with the white pressure roller and its gear.

To remove the bushing L, take off the white pressure gear by pulling its pawl outwards.

White pressure roller gear

White pressure roller

Bushing R

(2) Disconnect the CIS harness from the main PCB.

FAX[phone]/1020/MFC1770

(NCU connector)

P2

P3

P5P4

(Modular PCB
connector)

P1

Bushing L

Pull here towards you.

FAX1570MC/1030/MFC1870MC/1970MC

(NCU
connector)

P8

P9

P7

P10

P11

(Modular
PCB

P10

P11

P13

P14

P12

P15

connector)

P1

P5

P2

P6

P3

P4

CIS harness

P12

(Front)

Main PCB

IV – 24

P9

CIS harness

Main PCB

(Front)

(3) Tilt the CIS unit towards you to release the rear latches from the main frame, and the

CIS unit comes off.

Rear latch

CIS holder

Front latch

CIS harness

Leaf spring

(4) Remove the CIS holders R and L as shown below.

CIS holder, L

CIS harness

CIS unit

CIS holder, R

CIS unit

■ Reassembling Notes

• When reinstalling the CIS unit, pass the CIS harness through the cutout provided in the

main frame.
First, hook the front latches of the CIS holders in the main frame while pressing the CIS

unit against the leaf spring and then hook the rear latches.

IV – 25

1.14 Handset Mount (for models except the FAX1010)
Side Cover (for the FAX1010)

(1) Disconnect the hook switch harness* from the main PCB.
(2) Remove the two screws from the handset mount* or the side cover**.
(3) Twist the handset mount* or the side cover** so that it tilts over to the left and its upper

end works out of the bosses provided on the side cover L.

(FAX1010)

Side
cover**

Thick portions "T" whose outer face
should be flush with the outer face of
the side cover L.

(Models except the
FAX1010)

Handset mount*

Side cover L

* For models except the

Handset mount*

FAX1010

** For the FAX1010

(4) To disassemble the handset mount* for models except the FAX1010, unhook the two

latches with a flat screwdriver.

Upper mount

Latch

Latch

Hook switch PCB

Hook switch harness

Lower mount

Underneath the
hook switch
PCB

Routing of the hook
switch harness

Through the cutout

■ Reassembling Notes

• When assembling upper and lower mounts, route the hook switch harness underneath
the hook switch PCB and through the cutout as shown above. Take care not to pinch the
harness between the upper and lower mounts.

• The front and rear upper edges "T" of the handset mount are thick. Be sure to make their
outer face flush with the outer face of the side cover L.

IV – 26

1.15 Side Covers R and L

(1) Lift up the front of the side cover R and take it out.
(2) Disconnect the main-sensor harness from the main PCB, and then lift up the front of the

side cover L and take it out together with the main-sensor harness.

Platen frame

Side
cover L

Tab

Hole

Routing of the main­sensor harness

Side
cover R

Hole

■ Reassembling Notes

• Before putting back the side cover L, route the main-sensor harness as illustrated above.

• When setting the side covers, put each rear edge under the tab and fit each hole over the
boss provided on the main cover.

• After installation, check the routing of the main-sensor harness, referring to Section 1.29.

IV – 27

FAX[phone]/1020/MFC1770

FAX1570MC/1030/MFC1870MC/1970MC

(NCU connector)

(Modular
PCB
connector)

(NCU connector)

P2

P3

P7

P5P4

P1

P8

P9

P10

P11

Main­sensor
harness

(Modular
PCB

P1

P10

P11

P13

P12

P14

P15

P5

P2

P6

P4

Main­sensor
harness

P3

connector)

P12

(Front)

Main PCB

P9

(Front)

Main PCB

IV – 28

1.16 Speaker and Battery

(1) Disconnect the speaker harness from the main PCB, and pull up the speaker.
(2) For the FAX1570MC/1030/MFC1870MC/1970MC, disconnect the battery harness from

the main PCB and pull up the battery.

Speaker

FAX[phone]/1020/MFC1770

(NCU connector)

P2

P3

P7

P5P4

P1

(Modular
PCB
connector)

P12

(Front)

P10

Main PCB

Battery harness

P8

P9

P11

Speaker
harness

Speaker harness

Battery

(Provided on the FAX1570MC/1030/
MFC1870MC/1970MC)

FAX1570MC/1030/MFC1870MC/1970MC

(NCU connector)

P10

P11

P13

P12

P14

P15

(Modular
PCB
connector)

P9

(Front)

Document
front sensor
actuator

P1

P5

P2

P6

P4

Main PCB

P3

Speaker
harness

Battery
harness

■ Reassembling Notes

• Route the speaker harness and the battery harness through the hole provided in the main
frame and through the groove on the main cover, and then hook them on the T-shaped
boss (refer to Section 1.29).

If either of these harnesses is loose, it will interfere with the document front sensor actua­tor, resulting a sensing error.

IV – 29

1.17 Document Front Sensor Actuator

(1) As shown below, push down the latch of the right end of the document front sensor ac-

tuator to release it from the hole provided in the main frame, move it to the left, and
then lift it up.

Document front
sensor actuator

Push here.

IV – 30

1.18 Main Frame

(1) Place the machine upright as shown below.
(2) Remove two screws "a" from the bottom plate.

Equipment placed
upright

Bottom plate

"a"

"a"

(3) Place the machine rightside up.
(4) Disconnect the following four harnesses from the main PCB:

• Solenoid harness (2-pin)

• Motor harness (6-pin)

• Power-main harness (4-pin)

• Main-head harness (11-pin)
NOTE: Unhook the motor harness and its ferrite core from the bosses provided on the

main cover.

(5) Disconnect the relay connector of the head-power harness.

NOTE: To disconnect the relay connector, push the lock of the relay connector to re­lease.

FAX[phone]/1020/MFC1770

Head-power harness (Relay
connector)

Ferrite core

Power-main harness

Main-head harness

T-shaped boss

Motor harness

Solenoid harness

Motor

Main PCB

(Front)

IV – 31

FAX1570MC/1030/MFC1870MC/1970MC

Power-main harness

Ferrite core

Motor harness

Solenoid
harness

Motor

Main-head harness

T-shaped boss

Main PCB

(Front)

(6) Remove four screws "b" and lift up the main frame.

"b"

Head-power harness (Relay
connector)

Main frame

Main cover

■ Reassembling Notes

• Route the motor harness and hook its ferrite core on the main frame as illustrated on the
previous page or this page.

• Be sure to secure the main frame with two screws "a" which were removed in step (2).

IV – 32

1.19 Separation Roller, its Support, and Document Rear Sensor Actuator

(1) At the left side of the main frame, remove the spring and pull out the clutch lever by

pulling its pawl outwards.
(2) Remove the gear 20/40, and then remove the gear 33 by pulling its pawl outwards.
(3) Pull the latch towards you and pull out the separation roller gear to the left, and the

separation roller comes off.

Separation roller

Main frame

Gear 33

Separation
roller gear

Latch

Clutch lever

Spring

Gear 20/40

(4) As shown below, release the latch with the tip of a flat screwdriver and slide the separa-

tion roller support to the right and lift it up.

Latch

Separation roller support

IV – 33

(5) To remove the document rear sensor actuator, push down the latch of its right end to

release it from the hole provided in the main frame, move it to the left, and then take it

out.

Document rear sensor actuator

Push here.

IV – 34

1.20 Document Ejection Roller and CIS Leaf Spring

(1) To remove the document ejection roller, pull out the gear 14/20 by pulling its pawl out-

wards. Next, move the document ejection roller to the left and take it out downwards.

Gear 14/20

Document ejection roller

(2) To remove the CIS leaf spring, pull up its lower end with the tip of a flat screwdriver and

move it in the direction of the arrow shown below.

CIS leaf spring

IV – 35

Flat screwdriver

1.21 Motor

(1) To remove the motor, at the left side of the main frame, unhook the spring and then pull

out the clutch lever by pulling its pawl outwards. Next, remove the screw and turn the

motor clockwise when viewed from the left.

Motor

Clutch lever and spring

IV – 36

1.22 Solenoid

(1) At the left side of the main frame, remove the spring and pull out the clutch lever by

pulling its pawl outwards.
(2) Remove the gear 20/40.
(3) Remove the arm B ASSY and arm A ASSY by pulling the arm B's pawl outwards.
(4) Push up the clamp and remove the solenoid.

Solenoid

Arm A ASSY

Arm B ASSY

Clutch lever
and spring

Clamp

Solenoid

Gear 20/40

IV – 37

1.23 Drive Gears

(1) At the left side of the main frame, remove the clutch lever, gears, and arm ASSYs, by

pulling their pawls outwards (if any).

Gear 33

Gear 18

Gear 33/45

Main
frame

Cover sensor actuator

Gear 39

Actuator spring

Arm C ASSY
(Planet gear 44)

Sun gear 36/27

Arm B ASSY
(Planet gear 20B)

Arm A ASSY
(Planet gear 20A)

Sun gear 20/90

■ Reassembling Notes

• If you have disassembled the above gear train, reassemble it referring to the illustration

below.

Q (Gear 33)

Gear 39

Clutch lever

Gear 20/40

Z (Gear 33/45)

M (Gear 39)

Gears 14/20

C (Planet gear 20B of Arm B ASSY)

D (Gear 33)

F (Separation roller gear)

Main frame

P (Gear 18)

O (Gear 39)

Y (Planet gear 44
of Arm C ASSY)

N (Sun gear
36/27)

B (Sun gear 20/90)

IV – 38

E (Gear 20/40)

Clutch lever

A (Motor gear)

L (Planet gear 20A of Arm A ASSY)

I (White pressure
roller gear)

(Front)

K (Document
ejection roller
gear)

G H J

(Gears 14/20)

1.24 Friction Torque Transmission ASSY, its Related Gears, and Slip Gear 40

(1) At the right side of the main frame, remove the ribbon drive gear (Gear 24) by pulling its

two pawls outwards.
(2) Remove the screw and take off the friction holder.
(3) Remove the gear 18 by pulling its pawl outwards and then take off the gear 20/24 and

the friction torque transmission ASSY (Gear 46).

Ribbon drive gear (Gear 24)

Gear 20/40

Gear 18

Friction torque transmission
ASSY (Gear 46)

Friction holder

Right side of the main frame

(4) At the inside of the right rear side of the main frame, remove the retaining ring E3 and

then take out the slip gear 40, friction pad, and back tension spring.

(Rear)

Retaining ring E3

Slip gear 40

Right side of the
main frame

Back tension spring

Friction pad

IV – 39

1.25 Ribbon Bushings

(1) Remove the ribbon bushings and the pawled ribbon bushings B.

Pawled ribbon
bushing B

Ribbon
bushing

Pawled ribbon
bushing B

Ribbon
bushing

Main frame

1.26 Bottom Plate

(1) Place the machine upside down.
(2) Remove the six screws from the bottom plate.
(3) Slightly lift up the bottom plate and disconnect the grounding terminal.

Bottom plate

Grounding terminal

(Rear)

IV – 40

1.27 Main PCB, NCU PCB and Modular PCB

(1) Place the machine rightside up.
(2) Disconnect the following harnesses from the main PCB:

• Solenoid harness (2-pin)

• Hook switch harness (2-pin)*

• Main-panel harness (5-pin)

• Main-head harness (11-pin)

• Main-sensor harness (5-pin)

• Motor harness (6-pin)

• Power-main harness (4-pin)

• Speaker harness (2-pin)

• CIS harness (7-pin)

• Main-mike harness (2-pin)

• Battery harness (2-pin)

For the FAX1570MC/1030/MFC1870MC/1970MC

FAX[phone]/1020/MFC1770

(NCU connector)

Solenoid
harness

(Modular
PCB
connector)

CIS harness

Hook switch harness*

P2

P3

P1

Main-panel harness

P5P4

P12

(Front)

P7

P10

Main PCB

Main-head harness

P8

P9

Main-sensor
harness

Motor
harness

P11

Speaker
harness

Power-main
harness

FAX1570MC/1030/MFC1870MC/1970MC

Main-mike
harness

(Front)

Main-panel
harness

Solenoid

harness
Hook switch
harness

(Modular
PCB
connector)

(NCU connector)

P10

P11

P13

P14

P12

P15

P9

CIS harness

Main-head harness

P1

P5

P2

P6

P4

Main PCB

P3

Main-sensor
harness

Motor
harness

Battery
harness

Power-main
harnfess

Speaker
harness

* Not provided on the FAX1010

or those versions equipped with
a Binatone handset

IV – 41

(3) Turn the machine upside down.
(4) Unhook the modular PCB from the latches, slightly lift up front edge of the main PCB,

and then take out the main PCB together with the modular PCB and NCU PCB.
(5) Remove the PC I/F cover.
(6) Disconnect the modular PCB and NCU PCB from the main PCB.

Main PCB

Modular PCB

NCU PCB

PC I/F cover

(Rear)

IV – 42

1.28 Power Supply PCB

(1) Place the machine rightside up.
(2) Disconnect the power-main harness from the main PCB.
(3) Disconnect the relay connector of the head-power harness.

NOTE: To disconnect the relay connector, push the lock of the relay connector to re-

lease.

FAX[phone]/1020/MFC1770

(NCU connector)

P2

P3

P7

P5P4

(Modular
PCB
connector)

P1

P10

Main PCB

P12

(Front)

FAX1570MC/1030/MFC1870MC/1970MC

(NCU connector)

P8

P9

P11

(Modular
PCB

P10

P11

P13

P12

P14

P15

connector)

P1

P5

P2

P6

P3

P4

Power­main
harnfess

Power­main
harness

P9

Main PCB

(Front)

Hook of the relay connector

Head-power
harness

IV – 43

(4) Turn the machine upside down.
(5) Remove the adhesive tape to release the power-main harness and the head-power har-

ness.
(6) Lift up the power supply PCB and pull out the AC cord bushing from the main cover.

Head-power
harness

Power-main harness

Power supply PCB

Adhesive tape

Main cover

(Rear)

AC cord bushing

■ Reassembling Notes

• When reinstalling the main PCB, make sure that the harnesses are routed on the main

cover as illustrated in Section 1.29.

IV – 44

1.29 Harness Routing

FAX[phone]/1020/MFC1770

Motor harness

Solenoid
harness

Hook switch
harness

Main-panel
harness

Main-sensor
harness

Main-head harness

T-shaped boss

CIS
harness

Power-main harness

Main PCB

Speaker harness

(Front)

Head-power harness
(Relay connector)

Center beam of
the main frame

FAX1570MC/1030/MFC1870MC/1970MC

Main-sensor
harness

Motor harness

Solenoid
harness

Hook switch
harness

Main-panel
harness

Main-head harness

T-shaped boss

Main-mike
harness

Power-main harness

Main PCB

CIS
harness

(Front)

Battery harness

Head-power harness
(Relay connector)

Center beam of
the main frame

Speaker harness

IV – 45

2. LUBRICATION

Apply the specified lubricants to the lubrication points as shown below.
Molykote EM-30L

For points A, apply a rice-sized pinch of grease (6 mm3).
For points B, apply a bean-sized pinch of grease (12 mm3).

Floil GE-334C

For points F, apply half of a rice-sized pinch of grease (3 mm3).

[ 1 ] Recording head

A

Recording head

[ 2 ] Inner cover

A

A

Leaf spring

A

A

A

A

(Front)

A

A

A

Leaf spring

Inner cover

IV – 46

(Front)

[ 3 ] Gears at the left side of the platen frame

Clutch gear ASSY

A

A

A

Arm P ASSY

A

Platen frame

A

Clutch gear ASSY

A

Platen

A

[ 4 ] Paper ejection roller

F

Pawled
bushing

Platen
frame

Paper ejection roller

Paper ejection
roller gear
(Gear 40)

(Rear)

IV – 47

[ 5 ] Gears at the left side of the main frame

A

A

A

Arm C ASSY

A

A

Arm A ASSY

A

Main
frame

A

A

A

A

A

Arm B ASSY

[ 6 ] Friction torque transmission ASSY at the right side of the main frame

Gear 46 ASSY

A

B

B

IV – 48

[ 7 ] Separation roller and document ejection roller

A

Separation roller

B

Separation roller support

A

A

Document ejection roller

A

A

IV – 49

CHAPTER V.

MAINTENANCE MODE

CONTENTS

1. ENTRY INTO THE MAINTENANCE MODE .................................................. V-1

2. LIST OF MAINTENANCE-MODE FUNCTIONS ............................................ V-2

3. DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS......... V-4

3.1 E2PROM Parameter Initialization .......................................................... V-4

3.2 Printout of Scanning Compensation Data ............................................. V-5

3.3 ADF Performance Test.......................................................................... V-7

3.4 Test Pattern 1......................................................................................... V-8

3.5 Firmware Switch Setting and Printout ................................................... V-9

3.6 Operational Check of Control Panel PCB ............................................. V-48

3.7 Sensor Operational Check .................................................................... V-50

3.8 CIS Scanner Area Setting ..................................................................... V-51

3.9 Equipment Error Code Indication .......................................................... V-51

3.10 Document Draw Adjustment.................................................................. V-52

1. ENTRY INTO THE MAINTENANCE MODE

To make the facsimile equipment enter the maintenance mode, press the Function ,

* , 2 , 8 , 6 , and 4 keys in this order.

Within 2 seconds
The equipment beeps for approx. one second and displays " " on

the LCD, indicating that it is placed in the initial maintenance mode, a mode in which the
equipment is ready to accept entry from the keys.

To select one of the maintenance-mode functions listed in Section 2, enter the corresponding
2-digit function code with the numerical keys on the control panel. (The details of each main­tenance-mode function are described in Section 3.)

NOTES: • Pressing the 9 key twice in the initial maintenance mode restores the equip-

ment to the standby state.

• Pressing the Stop button after entering only one digit restores the equipment
to the initial maintenance mode.

• If an invalid function code is entered, the equipment resumes the initial mainte­nance mode.

• The " " in the " " is used for checking LCDs in the
factory.

MAINTENANCE

MAINTENANCE

V – 1

2. LIST OF MAINTENANCE-MODE FUNCTIONS

Maintenance-mode Functions

Function

Code

01
02
03
04
05
06
07
08
09
10
11
12
13

14
15

Reference

Function

E2PROM Parameter Initialization

Printout of Scanning Compensation Data 3.2 (V-5)

ADF* Performance Test
Test Pattern 1
Firmware Switch Setting
Printout of Firmware Switch Data

Operational Check of Control Panel PCB
(Check of Keys and Buttons)

Subsection

(Page)

3.1 (V-4)

3.3 (V-7)

3.4 (V-8)

3.5 (V-9)

3.5 (V-47)

3.6 (V-48)

32

55

82

91

Sensor Operational Check

CIS Scanner Area Setting

Equipment Error Code Indication

E2PROM Parameter Initialization (except the tele­phone number storage area)

* ADF: Automatic document feeder

3.7 (V-50)

3.8 (V-51)

3.9 (V-51)

3.1 (V-4)

V – 2

- - - - - - - - - - - - - - - - - - - - - - - - - - IMPORTANT - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Basically, the maintenance-mode functions listed on the previous page should be accessed
by service personnel only. However, you may allow end users to access some of these un­der the guidance of service personnel (e.g., by telephone).

The user-accessible functions (codes 10, 11, 82, and 91) are shaded in the above table.
Function code 10 accesses the firmware switches WSW01 to WSW34, each of which has
eight selectors. You should not allow end users to access all of those selectors, but you may
allow them to access user-accessible selectors which are shaded in the firmware switch
tables in Subsection 3.5.

The service personnel should instruct end users to follow the procedure given below.
(1) Press the Function key and the Mode key in this order.

The LCD clears the current display.

NOTE: The Mode key is inoperable during standby for redialing and timer.
(2) Press the 0 key.
(3) Enter the desired function code (10, 11, 82, or 91) with the numerical keys.

For function code 10, access the desired firmware switch according to the operating

procedure described in Subsection 3.5.
(4) To make the equipment return to the standby state, press the Stop key.

FAX[phone]/1020/MFC1770

Function key Mode key

FAX1570MC/1030/MFC1870MC/1970MC

Function key Mode key

0 key

Stop key

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

0 key Stop key

V – 3

3 DETAILED DESCRIPTION OF

MAINTENANCE-MODE FUNCTIONS

3.1 E2PROM Parameter Initialization

■ Function

The equipment initializes the parameters, user switches, and firmware switches registered in
the E2PROM, to the initial values. Entering the function code 01 initializes all of the
E2PROM areas, but entering 91 does not initialize some areas, as listed below.

Data item

Maintenance-mode functions

User switches
Firmware switches
Remote activation code
Activity report
Distinctive ringing patterns

registered (only for the
U.S.A. versions)

Station ID data
Outside line number

Telephone function registration

One-touch dialing
Speed dialing

■ Operating Procedure

(1) Press the 0 and 1 keys (or the 9 and 1 keys according to your need) in this

order in the initial maintenance mode.
The "PARAMETER INIT" will appear on the LCD.

(2) Upon completion of parameter initialization, the equipment returns to the initial mainte-

nance mode.

Function code

01

All of these will
be initialized.

91

These will be
initialized.

These will not
be initialized.

V – 4

3.2 Printout of Scanning Compensation Data

■ Function

The equipment prints out the white and black level data for scanning compensation.

■ Operating Procedure

Do not start this function merely after powering on the equipment but start it after carrying
out a sequence of scanning operation. Unless the equipment has carried out any scanning
operation, this function cannot print out correct scanning compensation data. This is be­cause the equipment initializes white and black level data and takes in the scanning com­pensation reference data at the start of scanning operation.

(1) Press the 0 and 5 keys in this order in the initial maintenance mode.

The "WHITE LEVEL 1" will appear on the LCD.

(2) The equipment prints out the scanning compensation data list containing the following:

MFC1970MC
a) 2-value quantized white level data (208 bytes)
b) 2-value quantized black level data (1 byte)
c) Photo-mode white level data (208 bytes)
d) Photo-mode black level data (1 byte)
e) Compensation coefficient for background color (1 byte)
f) Initial LED light intensity value (1 byte)
g) LED light intensity value, 2-value quantized LED light intensity value, and photo-

mode LED light intensity value (3 bytes)

h) 2-value quantized A/D reference value and photo-mode A/D reference value (2

bytes)
i) LED light intensity value on the platen and documents (2 bytes)
j) Threshold value on the platen (1 byte)

Other models
a) White level data (208 bytes)
b) Black level data (1 byte)
c) Clamp PWM value (1 byte)
d) Compensation data for background color (1 byte)
e) Initial LED light intensity value (1 byte)
f) LED light intensity value (1 byte)
g) LED light intensity value on the platen and documents (2 bytes)
h) Threshold value on the platen (1 byte)

(3) Upon completion of recording of the compensation data list, the equipment returns to

the initial maintenance mode.

NOTE: If any data is abnormal, its code will be printed in inline style, as shown on the next

page.

V – 5

Scanning Compensation Data List (MFC1970MC)

Scanning Compensation Data List (Other models)

V – 6

3.3 ADF Performance Test

■ Function

The equipment counts the documents fed by the automatic document feeder (ADF) and dis­plays the count on the LCD for checking the ADF performance.

■ Operating Procedure

(1) Set documents. (Allowable up to the ADF capacity.)

The "DOC. READY" will appear on the LCD.

(2) Press the 0 and 8 keys in this order.

The equipment

i) copies the 1st document and displays "COPY P.01 STD" on the LCD,
ii) feeds in and out the 2nd through 4th documents while counting without copying

them as the LCD shows the corresponding count,
iii) copies the 5th document and displays "COPY P.05 STD" on the LCD,
iv) feeds in and out the 6th through 9th documents while counting without copying

them as the LCD shows the corresponding count, and
v) copies the 10th document and displays "COPY P.10 STD" on the LCD.

(3) Upon completion of feeding in and out all of the documents, the final count appears on

the LCD.

(4) Press the Stop key to return the equipment to the initial maintenance mode.

V – 7

3.4 Test Pattern 1

■ Function

This function, much like the copying function, prints out test pattern 1 to allow the service
personnel to check for record data missing or print quality.

■ Operating Procedure

Press the 0 and 9 keys in this order in the initial maintenance mode.
The figure below shows test pattern 1.

Test Pattern 1

V – 8

3.5 Firmware Switch Setting and Printout

[ A ] Firmware switch setting

■ Function

The facsimile equipment incorporates the following firmware switch functions (WSW01
through WSW34) which may be activated with the procedures using the control panel keys
and buttons.

The firmware switches have been set at the factory in conformity to the communications
standards and codes of each country. Do not disturb them unless necessary. Some firm­ware switches may not be applicable in some versions. The firmware switch data list indi­cates "Not used." for those inapplicable switches.

Firmware Switches (WSW01 through WSW34)

WSW No. Function Reference Page

WSW01 Dial pulse setting V-1 1
WSW02 Tone signal setting V-12
WSW03 PABX mode setting V-13
WSW04 TRANSFER facility setting V-15
WSW05 1st dial tone and busy tone detection V-16
WSW06 PAUSE key setting and 2nd dial tone detection V-18
WSW07 Dial tone setting 1 V-20
WSW08 Dial tone setting 2 V-21
WSW09 Protocol definition 1 V-22
WSW10 Protocol definition 2 V-23
WSW11 Busy tone setting V-24
WSW12 Signal detection condition setting V-25
WSW13 Modem setting V-26
WSW14 AUTO ANS facility setting V-27
WSW15 REDIAL facility setting V-28
WSW16 Function setting 1 V-29
WSW17 Function setting 2 V-30
WSW18 Function setting 3 V-31
WSW19 Transmission speed setting V-32
WSW20 Overseas communications mode setting V-33
WSW21 TAD setting 1 V-34
WSW22 Copy resolution setting V-34
WSW23 Communications setting V-35
WSW24 TAD setting 2 V-36
WSW25 TAD setting 3 V-37
WSW26 Function setting 4 V-38
WSW27 Function setting 5 V-39
WSW28 Function setting 6 V-40
WSW29 Function setting 7 V-41
WSW30 Function setting 8 V-42
WSW31 Function setting 9 V-43
WSW32 Function setting 10 V-44
WSW33 Function setting 11 V-45
WSW34 Function setting 12 V-46

V – 9

■ Operating Procedure

(1) Press the 1 and 0 keys in this order in the initial maintenance mode.

The equipment displays the "WSW00" on the LCD and becomes ready to accept a firm­ware switch number.

(2) Enter the desired number from the firmware switch numbers (01 through 34).

The following appears on the LCD:

(3) Use the and keys to move the cursor to the selector position to be modified.
(4) Enter the desired number using the 0 and 1 keys.
(5) Press the Set key. This operation saves the newly entered selector values onto the

E2PROM and readies the equipment for accepting a firmware switch number.

(6) Repeat steps (2) through (5) until the modification for the desired firmware switches is

completed.
(7) Press the Set or Stop key to return the equipment to the initial maintenance mode.
NOTES: • To cancel this operation and return the equipment to the initial maintenance

mode during the above procedure, press the Stop key.

• If there is a pause of more than one minute after a single-digit number is en­tered for double-digit firmware switch numbers, the equipment will automati­cally return to the initial maintenance mode.

WSWXX = 0 0 0 0 0 0 0 0

■ Note

The user-accessible selectors of the firmware switches are shaded in the tables given on the
following pages.

V – 10

■ Detailed Description for the Firmware Switches

WSW01 (Dial pulse setting)

Selector

No.

1
2

3
4

5
6

7

8

Function

Dial pulse generation mode

Break time length in pulse
dialing

Inter-digit pause

Switching between pulse (DP)
and tone (PB) dialing, by the
function switch

Default dialing mode, pulse
(DP) or tone (PB) dialing

Setting and Specifications

No. 1 2

00: N
0 1 : N+1
1 0 : 10-N
11: N

No. 3 4

0 0 : 60 ms
0 1 : 67 ms
1 0 : 40 ms
1 1 : 64 ms

No. 5 6

0 0 : 800 ms
0 1 : 850 ms
1 0 : 950 ms
1 1 : 600 ms

0: Yes 1: No

0: PB 1: DP

(for 16 PPS)
(at 106-ms intervals)

● Selectors 1 and 2: Dial pulse generation mode

These selectors set the number of pulses to be generated in pulse dialing.

N: Dialing "N" generates "N" pulses. (Dialing "0" generates 10 pulses.)
N + 1: Dialing "N" generates "N + 1" pulses.
10 - N: Dialing "N" generates "10 - N" pulses.

● Selectors 3 and 4: Break time length in pulse dialing

These selectors set the break time length in pulse dialing.
(Example: If "1," "2," and "3" are dialled when N is set by selectors 1 and 2.)

Break time length set by
selectors 3 and 4

"1" "2" "3"

● Selectors 5 and 6: Inter-digit pause

These selectors set the inter-digit pause in pulse dialing.
(Example: If "1," "2," and "3" are dialled when N is set by selectors 1 and 2.)

"1"

"2"

"3"

Inter-digit pause set by
selectors 5 and 6

V – 11

● Selector 7: Switching between pulse (DP) and tone (PB) dialing, by the function switch

This selector determines whether or not the dialing mode may be switched between the
pulse (DP) and tone (PB) dialing by using the function switch.

● Selector 8: Default dialing mode, pulse (DP) or tone (PB) dialing

This selector sets the default dialing mode (pulse dialing or tone dialing) which may be
changed by the function switch. If the user switches it with the function switch when selector
7 is set to "0," the setting specified by this selector will be also switched automatically.

WSW02 (Tone signal setting)

Selector

No.

Function

Setting and Specifications

No. 1 2

1
2

Tone signal transmission time
length

0 0 : 70 ms
0 1 : 80 ms
1 0 : 90 ms
1 1 : 100 ms

No. 3 4

3

Min. pause in tone dialing

4

0 0 : 70 ms
0 1 : 80 ms
1 0 : 90 ms
1 1 : 140 ms

5

|

8

● Selectors 1 through 4: Tone signal transmission time length and Min. pause in tone dialing

Attenuator for pseudo ring
backtone to the line (selectable
in the range of 0-15 dB)

0: 0 dB 1: 8 dB
0: 0 dB 1: 4 dB
0: 0 dB 1: 2 dB
0: 0 dB 1: 1 dB

These selectors set the tone signal transmission time length and minimum pause in tone di­aling.

(Example: If "1," "2," "3," "4," and "5" are dialled.)

Tone signal transmission time
length set by selectors 1 and 2

"1"

● Selectors 5 through 8: Attenuator for pseudo ring backtone to the line

"2"

"3"

"4"

"5"

Min. pause set by
selectors 3 and 4

These selectors are used to adjust the sound level of beep generated as a ring backtone in
the F/T mode or as a signal during remote control operation or at the start of ICM recording.

Setting two or more selectors to "1" produces addition of attenuation assigned to each selec­tor.

This setting will be limited if selector 8 of WSW23 is set to "0."

V – 12

WSW03 (PABX* mode setting)

Selector

No.

1

2

|

4

5

6
7

Function

CNG detection when sharing a
modular wall socket with a telephone

Min. detection time length of
PABX* dial tone, required for
starting dialing

CNG detection when sharing a
modular wall socket with a telephone

Dial tone detection in PABX*

Setting and Specifications

0: A 1: B

No. 2 3 4

0 0 0 : 50 ms
0 0 1 : 210 ms
0 1 0 : 500 ms
0 1 1 : 800 ms
1 0 0 : 900 ms
1 0 1 : 1.5 sec.
1 1 0 : 2.0 sec.
1 1 1 : 2.5 sec.

0: A 1: B

No. 6 7

0 0 : No detection

(3.5 sec. WAIT)

0 1 : No detection

(5 sec. WAIT)

1 0 : No detection

(7 sec. WAIT)

1 1 : Detection

(Frequency only)

8

"R" key function

0: 1st dial tone 1: No 1st dial

detection add tone detection

* PABX: Private automatic branch exchange

NOTE: Selectors 2 through 4 and 6 through 8 are not applicable where no PABX is installed.

● Selectors 1 and 5: CNG detection when sharing a modular wall socket with a telephone

These selectors determine whether or not the equipment detects a CNG signal when a line
is connected to a telephone sharing a modular wall socket with the equipment. If these se­lectors are set to "0,0," the equipment does not detect CNG. If set to other selector values,
the equipment interprets CNG as an effective signal upon detection of CNG signals by the
number of cycles specified by these selectors and then starts FAX reception.

Selector

No.1 No. 5
0 (A) 0 (A) No detection

0 (A) 1 (B) One cycle
1 (B) 0 (A) 1.5 cycles
1 (B) 1 (B) 2 cycles

● Selectors 2 through 4: Min. detection time length of PABX dial tone, required for starting

dialing

Cycle

Upon detection of the PABX dial tone for the time length set by these selectors, the equip­ment starts dialing.

These selectors are effective only when both selectors 6 and 7 are set to "1" (Detection).

V – 13

● Selectors 6 and 7: Dial tone detection in PABX

These selectors activate or deactivate the dial tone detection function which detects a dial
tone when a line is connected to the PABX.

Setting both of these selectors to "1" activates the dial tone detection function so that the
equipment starts dialing upon detection of a dial tone when a line is connected.

Other setting combinations deactivate the dial tone detection function so that the equipment
starts dialing after the specified WAIT (3.5, 5.0, or 7.0 sec.) without detection of a dial tone
when a line is connected.

● Selector 8: "R" key function

This selector determines whether or not the 1st dial tone detection function (specified by se­lectors 1 through 3 of WSW05) is added to the R key.

If this selector is set to "0," pressing the R key automatically activates the 1st dial tone detec­tion function when the PABX and the automatic calling are selected by using the function
switch. If you press the R key and a dial number in succession, the equipment will automati­cally carry out the 1st dial tone detection function following the original transfer function as
shown below.

Original transfer
function of R key

Dial number

1st dial tone detection function

V – 14

WSW04 (TRANSFER facility setting)

Selector

No.

Function

Setting and Specifications
1 Earth function in transfer facility 0: Provided 1: Not provided
2

3

4 0: OFF 1: High

Dual tone detection frequency
in ICM recording

Tone detection sensitivity in
ICM recording

No. 2 3

0 0 : 350 or 440 Hz (A)
0 1 : 440 or 480 Hz (B)
1 x : 480 or 620 Hz (C)

No. 5 6

5

Earth time length for earth
function

6

0 0 : 200 ms
0 1 : 300 ms
1 0 : 500 ms
1 1 : 700 ms

No. 7 8

7
8

Break time length for flash
function

0 0 : 80 ms
0 1 : 110 ms
1 0 : 250 ms
1 1 : 500 ms

NOTE: Selectors 1 and 5 through 8 are not applicable in those countries where no transfer fa-

cility is supported.

● Selector 1: Earth function in transfer facility

This selector determines whether or not the earth function is added to the transfer setting
menu to be accessed by the function switch.

● Selectors 2 and 3: Dual tone detection frequency in ICM recording

If the equipment detects either of the frequencies set by these selectors in ICM recording, it
will disconnect the line. For example, if these selectors are set to "0, 0," the equipment will
disconnect the line upon detection of 350 Hz or 440 Hz.

● Selector 4: Tone detection sensitivity in ICM recording

Setting this selector to "1" increases the tone detection sensitivity in ICM recording.

● Selectors 5 and 6: Earth time length for earth function

These selectors set the short-circuiting time length of the telephone line (La or Lb) to ground.
This setting is effective only when the earth function is selected for the R key by using the

function switch.

● Selectors 7 and 8: Break time length for flash function

These selectors set the break time length.
This setting is effective only when the flash function is selected for the R key by using the

function switch.

V – 15

WSW05 (1st dial tone and busy tone detection)

Selector

No.

Function

Setting and Specifications

No. 1 2 3

0 0 0 : 3.5 sec. WAIT

1

|

1st dial tone detection

3

0 0 1 : 7.0 sec. WAIT
0 1 0 : 10.5 sec. WAIT
0 1 1 : 14.0 sec. WAIT
1 0 0 : 17.5 sec. WAIT
1 0 1 : 21.0 sec. WAIT
1 1 0 : 24.5 sec. WAIT
111:

4 0: 2 seconds 1: 1 second

Max. pause time allowable for
remote ID code detection

Detection (Without WAIT)

No. 5 6

0 0 : No detection

5
6

Busy tone detection in auto­matic sending mode

0 1 : Detection only

after dialing
1 0 : No detection
1 1 : Detection before

and after dialing

Busy tone detection in auto­matic receiving mode

8

Not used.

0: Yes 1: No7

NOTE: Selectors 5 through 7 are not applicable in those countries where no busy tone detec-

tion is supported, e.g., U.S.A.

● Selectors 1 through 3: 1st dial tone detection

These selectors activate or deactivate the 1st dial tone detection function which detects the
1st dial tone issued from the PSTN when a line is connected to the PSTN.

Setting all of these selectors to "1" activates the dial tone detection function so that the
equipment starts dialing upon detection of a dial tone when a line is connected. (However, in
those countries which support no dial tone detection function, e.g., in the U.S.A., setting
these selectors to "1" makes the equipment start dialing after a WAIT of 3.5 seconds.) For
the detecting conditions of the 1st dial tone, refer to WSW07 and WSW08.

Other setting combinations deactivate the dial tone detection function so that the equipment
starts dialing after the specified WAIT (3.5, 7.0, 10.5, 14.0, 17.5, 21.0, or 24.5 seconds) with­out detection of a dial tone when a line is connected to the PSTN.

● Selector 4: Max. pause time allowable for remote ID code detection

This selector sets the maximum pause time allowable for detecting the second digit of a re­mote ID code after detection of the first digit in remote reception.

If selector 4 is set to "0" (2 seconds), for instance, only a remote ID code whose second digit
is detected within 2 seconds after detection of the first digit will become effective so as to
activate the remote function.

V – 16

● Selectors 5 and 6: Busy tone detection in automatic sending mode

These selectors determine whether or not the equipment automatically disconnects a line
upon detection of a busy tone in automatic sending mode.

Setting selector 6 to "0" ignores a busy tone so that the equipment does not disconnect the
line.

Setting selectors 5 and 6 to "0" and "1," respectively, makes the equipment detect a busy
tone only after dialing and disconnect the line.

Setting both of selectors 5 and 6 to "1" makes the equipment detect a busy tone before and
after dialing and then disconnect the line.

● Selector 7: Busy tone detection in automatic receiving mode

This selector determines whether or not the equipment automatically disconnects a line upon
detection of a busy tone in automatic receiving mode.

V – 17

WSW06 (PAUSE key setting and 2nd dial tone detection)

Selector

No.

1

|

3

4

|

6

Function

PAUSE key setting and 2nd dial
tone detection

Detection of international tone

Setting and Specifications

No. 1 2 3

0 0 0 : No pause
0 0 1 : 3.5 sec. WAIT
0 1 0 : 7 sec. WAIT
0 1 1 : 10.5 sec. WAIT
1 0 0 : 14 sec. WAIT
1 0 1 : 17.5 sec. WAIT
1 1 0 : 2nd dial tone detection

only in pulse dialing
(DP) system

1 1 1 : 2nd dial tone detection

both in DP and push­button (PB) dialing
systems

No. 4 5 6

0 0 0 : 50 ms
0 0 1 : 210 ms
0 1 0 : 500 ms
0 1 1 : 800 ms
1 0 0 : 900 ms
1 0 1 : 1.5 sec.
1 1 0 : 2.0 sec.
1 1 1 : 2.5 sec.

7

8

No. of dial tone detection times 0: Once 1: Twice

2nd dial tone interrupt detecting
time

0: 30 ms 1: 50 ms

NOTE: Selectors 4 through 8 are not applicable in those countries where no dial tone detection

is supported, e.g., U.S.A.

● Selectors 1 through 3: PAUSE key setting and 2nd dial tone detection

Selectors
123

0 0 0 No WAIT is inserted even if the PAUSE key is pressed.
001

010
011
100
101

110
111

Pressing the PAUSE key inserts WAIT in pulse dialing, as defined in
the above table.

If the PAUSE key is pressed repeatedly, the equipment beeps a refusal
sound and refuses the entry.

In hook-up dialing, however, the equipment allows repeated pressing
with an acceptance sound, but inserts WAIT only for the first pressing.

Each time the PAUSE key is pressed, the equipment detects a 2nd
dial tone.

If no 2nd dial tone is inputted within the specified time, the equipment
disconnects the line in automatic dialing, or it starts transmitting the
dial signal if given after depression of the PAUSE key in hook-up
dialing.

(In those countries where no dial tone detection function is supported,
setting these selectors to "1, 1, 0" or "1, 1, 1" inserts a WAIT of 3.5
seconds.)

V – 18

● Selectors 4 through 6: Detection of international tone

Upon detection of the 2nd dial tone for the time length specified by these selectors, the
equipment starts dialing.

This setting is effective only when the 2nd dial tone detection function is activated by selec­tors 1 through 3 (Setting 1, 1, 0 or 1, 1, 1).

This function does not apply in those countries where no dial tone detection function is sup­ported.

● Selector 7: No. of dial tone detection times

This selector sets the number of dial tone detection times required for starting dialing.

● Selector 8: 2nd dial tone interrupt detecting time

This selector sets the allowable time length of an interrupt which should not be interpreted as
an interrupt in the 2nd tone dialing.

V – 19

WSW07 (Dial tone setting 1)

Selector

No.

Function

Setting and Specifications

No. 1 2

1

Frequency band range

2

3 Line current detection

0 0 : Narrows by 10 Hz
0 1 : Initial value
1 X : Widens by 10 Hz

0: No 1: Yes

No. 4 5 6

0 0 0 : -21 dBm

4

2nd dial tone detection level

|

(Z = 600 Ω)

6

0 0 1 : -24 dBm
0 1 0 : -27 dBm
0 1 1 : -30 dBm
1 0 0 : -33 dBm
1 0 1 : -36 dBm
1 1 0 : -39 dBm
1 1 1 : -42 dBm

7

8

1st dial tone interrupt detecting
time

Not used.

0: 30 ms 1: 50 ms

NOTE: The WSW07 is not applicable in those countries where no dial tone or line current de-

tection is supported, e.g., U.S.A.

● Selectors 1 and 2: Frequency band range

These selectors set the frequency band for the 1st dial tone and the busy tone (before dial­ing) to be detected.

This setting is effective only when selectors 1 through 3 of WSW05 are set to "1, 1, 1."

● Selector 3: Line current detection

This selector determines whether or not the equipment should detect a line current before
starting dialing.

● Selectors 4 through 6: 2nd dial tone detection level

These selectors set the detection level of the 2nd dial tone.

● Selector 7: 1st dial tone interrupt detecting time

This selector sets the allowable time length of an interrupt which should not be interpreted as
an interrupt in the 1st dial tone dialing.

V – 20