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

...

FACSIMILE EQUIPMENT

SERVICE MANUAL

MODEL: FAX1170/1270/1570MC

FAX1010/1020/1030 MFC1770/1870MC/1970MC

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

Speed Dial

Help

ABC

DEF

GHI

JKL

TUV

MNO

WXYZ

Copy

Shift

Set

Clear

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

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

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

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

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)

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

x of Clutch Lever

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

Clutch lever

A (Motor gear)

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)

B (Sun gear 20/90)

Clutch lever

S (Planet gear 34)

R (Sun gear 39/24)

L (Planet gear 20A)

Active Gears

III – 9

(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)

Cutout x of clutch lever

x of Clutch Lever

a (Platen gear)

C (Planet gear 20B)

Stopper of arm A

Clutch lever

S (Planet gear 34)

R (Sun gear 39/24)

Y (Planet gear 44)

N (Sun gear 36/27)

Active Gears on the Left Side

III – 10

B (Sun gear 20/90)

(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)

Friction torque transmission ASSY (Gear 46)

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")).

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)

X of Clutch Lever

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)

Y (Planet gear 44)

N (Sun gear 36/27)

Active Gears on the Left Side

B (Sun gear 20/90)

III – 12

Solenoid

Clutch lever

A (Motor gear)

L (Planet gear 20A)

(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)

Active Gears on the Right Side

Main frame

III – 13

2.3.4 Power transmission route

Rotation of the motor gear is transmitted as shown below.

Gears on the Left Side

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

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