Brother FAX560, FAX580MC, MFC660MC, FAXT72, FAXT74 Service Manual

...

FACSIM ILE EQUIPMENT

SERVICE MANUAL

MODEL: FAX560/FAX580MC/MFC660MC

FAX-T72/FAX-T74/FAX-T76/FAX-T78 FAX-T82/FAX-T84/FAX-T86 FAX645/FAX685MC/MFC960MC FAX1280/FAX1980MC/FAX816

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

Specifications are subject t o c hange 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 lubrication--so that service personnel will be able to understand equipment function, to rapidly repair the equipment and order any necessary spare part s.

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 chapter s and appendices.

CHAPTER I. GENERAL DESCRIPTION CHAPTER II. INSTALLATION CHAPTER III. THEORY OF OPERATION CHAPTER IV. DISASSEMBLY/ REASSEMBLY AND LUBRICATION CHAPTER V. MAINTENANCE MODE CHAPTER VI. ERROR INDICATIO N AND T ROUBLESHOOTING

Appendix 1. EEPROM Customizing Codes Appendix 2. Circuit Diagrams

This manual describes the models and their versions to be destined for major countries. T he specifications and functions are subject to change depending upon each destination.

CHAPTER I.

GENERAL DESCRIPTION

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.

Models except FAX-T78

Weight: Machine proper (excluding accessories) Approx. 2.9 kg Approx. 3.0 kg

1.2 Components

The equipment consists of the following major components:

FAX-T78

In package MFC660MC/MFC960MC

Other models

Models except European models

Approx. 4.5 kg Approx. 4.1 kg

European models



Approx. 4.3 kg

I - 1

2. SPECIFICATIONS

(up to 25 pages for OPR**)

The tables below list the detailed specifications of typical models. The specifications of other models differ f rom them on the points of with/without handset, LCD type and other s according to destinations as shown on page I-7.

Model Name FAX560 FAX580MC MFC660MC

Engine Thermal transfer Thermal transfer Thermal transfer Color Upper: New Personal white

Transmission Speed (sec) 15 9 9 Modem Speed (bps) 9600 14,400 14,400 Group Compatibility G3 G3 G3 Input/Output Width 8.5"/8.5" 8.5"/8.5" 8.5"/8.5" ADF (pages) 10 10 10 Paper Feeder (sheets) Letter: 50*, Legal: 30 Letter: 50*, Legal: 30 Letter: 50*, Legal: 30 Ribbon Yield (letter-size) 150 pages (47 m) 150 pages (47 m) 150 pages (47 m) Starter Ribbon Yield (letter-size) 30 pages (10 m) 30 pages (10 m) 30 pages (10 m) Replacement Roll PC401: 47 m (150 pages) PC401: 47 m (150 pages) PC401: 47m (150 pages) LCD Size 16 x 1 16 x 1 16 x 1 On-Screen Programming Yes Yes Yes Super Fine Yes Yes Yes Smoothing Yes Yes Yes Gray Scale (levels) 64 by Dithered 64 by Dithered 64 by Dithered One Touch 4 4 4 Speed Dial 50 50 50 Telephone Index Yes as "Search" Yes as "Search" Yes as "Search" Speaker Phone Monitor Full duplex (digital) Full duplex (digital) Handset Yes Yes Yes FAX/TEL Switch Yes Yes Yes Distinctive Ring Detection Yes Yes Yes Caller ID Yes Yes Yes Call Waiting Caller ID Yes Yes Yes TAD Interface Yes Yes Yes Enhanced Remote Activation Yes Yes Yes Automatic Redial Yes Yes Yes Next-FAX Reservation Yes Yes Yes Multi-Resolution Transmission Yes Yes Yes Polling Type Sim/Seq Sim/Seq Sim/Seq Delayed Transmission 3-timer 3-timer 3-timer Call Reservation Yes Yes Yes Electronic Coverpage Yes-Super Yes-Super Yes-Super Call Back Message Yes Yes Yes Activity Report Yes Yes Yes TX Verification Report Yes Yes Yes Memory Capacity (pages)

(up to 25 pages for OPR**) ECM Yes Yes Yes Broadcasting Yes Yes Yes

(1485)

Lower: 1473 gray

512 KB

Upper: New Personal white

(1485)

Lower: 1473 gray

512 KB

Upper: MFC white

(1495 gray)

Lower: 1473 gray

512 KB

(up to 25 pages for OPR**)

(1/2)

*Paper feeder: 50 sheets for US/Canada

**Page memory: 25 pages in OPR (out-of-paper reception), 22 pages in quick scan

I - 2

Model Name FAX-T72 FAX-T74

Engine Thermal transfer Thermal transfer Color New Personal black (1293) New Personal black (1293) Transmission Speed (sec) 15 15 Modem Speed (bps) 9600 9600 Group Compatibility G3 G3 Input/Output Width 8.5"/8.5" 8.5"/8.5" ADF (pages) 10 10 Paper Feeder (A4-size) 30 sheets 30 sheets Ribbon Yield (A4-size) 144 pages (47 m) 144 pages (47 m) Starter Ribbon (A4-size) Yes-10 m (30 pages) Yes-10 m (30 pages) LCD Size 16 x 1 16 x 1 On-Screen Programming Yes Yes Super Fine Yes Yes Smoothing Yes Yes Gray Scale (levels) 64 by Dithered 64 by Dithered One Touch 4 4 Speed Dial 50 50 Telephone Index Yes as "Search" Yes as "Search" Speaker Phone Monitor Monitor Handset No Yes FAX/TEL Switch Yes Yes Caller ID Yes

Call Waiting Caller ID No No Distinctive Ring Detecti on No Yes for DEN/UK TAD Interface Yes Yes Enhanced Remote Activation Yes Yes Automatic Redial Yes Yes Next-FAX Reservation Yes Yes Multi-Resolution Transmission Yes Yes Polling Type Sim/Sec/Del/Seq Sim/Sec/Del/Seq Delayed Transmission 3-timer 3-timer Call Reservation Yes Yes Electronic Coverpage Yes-Super Yes-Super Callback Message Yes Yes Journal Report Yes Yes TX Verification Report Yes Yes Memory Capacity

ECM Yes Yes Broadcasting Yes Yes Quick Scan Yes Yes

GER/FRA/SPA

512 KB

(up to 20 pages for OPR*)

GER/HOL/SWE/UK/IRE/

FRA/NOR/BEL/DEN/SPA

(up to 20 pages for OPR*)

Yes

512 KB

(1/2)

*Page memory: 20 pages ITU-T No.1 chart in OPR (out-of-paper reception) in the ECM mode

I - 3

Model Name FAX-T76 FAX-T78

Engine Thermal transfer Thermal transfer Color New Personal black (1293) White (1517) Transmission Speed (sec) 9 9 Modem Speed (bps) 14,400 14,400 Group Compatibility G3 G3 Input/Output Width 8.5"/8.5" 8.5"/8.5" ADF (pages) 10 10 Paper Feeder (A4-size) 30 sheets 30 sheets Ribbon Yield (A4-size) 144 pages (47 m) 144 pages (47 m) Starter Ribbon (A4-size) Yes-10 m (30 pages)

LCD Size 16 x 1 16 x 2 + pict sign On-Screen Programming Yes Yes Super Fine Yes Yes Smoothing Yes Yes Gray Scale (levels) 64 by Dithered 64 by Dithered One Touch 4 N/A Speed Dial 50 100 Telephone Index Yes as "Search" Yes as "Jog Search" Speaker Phone Full duplex (digital) Full duplex (digital) Handset Yes Yes FAX/TEL Switch Yes Yes Caller ID Yes

Call Waiting Caller ID No No Distinctive Ring Detection Yes for DEN/UK Yes for UK TAD Interface Yes Yes Enhanced Remote Activation Yes Yes Automatic Redial Yes Yes Next-FAX Reservation Yes Yes Multi-Resolution Transmission Yes Yes Polling Type Sim/Sec/Del/Seq Sim/Sec/Del/Seq Delayed Transmission 3-timer 3-timer Call Reservation Yes Yes Electronic Coverpage Yes-Super Yes-Super Callback Message Yes Yes Journal Report Yes Yes TX Verification Report Yes Yes Memory Capacity

ECM Yes Yes Broadcasting Yes Yes Quick Scan Yes Yes

GER/HOL/SWE/UK/IRE/FRA/

NOR/BEL/DEN/SPA

512 KB

(up to 20 pages for OPR*)

Yes-10 m (30 pages)

(Not applicable to UK model)

Yes

GER/UK/FRA/BEL/SPA

512 KB

(up to 20 pages for OPR*)

(1/2)

*Page memory: 20 pages ITU-T No.1 chart in OPR (out-of-paper reception) in the ECM mode

I - 4

(1/2)

FAX-T84

WHITE (1517)

GER/AUS/POR

Model Name FAX-T82

Engine Thermal Transfer Thermal Transfer Color W HITE (1517) Transmision Speed (sec) 15 15 9 Modem Speed (bps) 9600 9600 Group Compatibility G3 G3 Input/Output Width 8.5"/8.5" 8.5"/8.5" ADF(pgs) 10 10 Paper Cassette ( A4 size ) 30 Sheets 30 Sheets 30 Sheets Ribbon Yield ( A4 size ) 144 Pages ( 47 m ) 144 Pages ( 47 m ) 144 Pages ( 47 m ) Starter ribbon ( A4 size ) Yes - 10 m ( 30 pages ) Yes - 10 m ( 30 pages ) Yes - 10 m ( 30 pages ) LCD Size 16X1 16X1 16X1 On-Screen Programming Yes Yes Yes Super Fine Yes Yes Yes Smoothing Yes Yes Yes Gray Scale (levels) 64 by Dithered 64 by Dithered 64 by Dithered One Touch 4 4 4 Speed Dial 100 100 100 Telephone Index Yes as "Search" Yes as "Search" Yes as "Search" Speaker Phone Monitor Monitor Full duplex ( digital ) Handset No Yes Yes FAX/TEL Switch Yes Yes Yes Caller ID Yes

FRA/SPA/GER/AUS

FRA/NOR/BEL/DEN/SPA/

Call waiting calle r ID No No Distinctive Ring Detection No Yes for DEN/UK Yes for DEN/UK TAD Interface Yes Yes Yes Enhanced Remote Activation Yes Yes Yes Automatic Redi a l Yes Yes Yes Next-FAX Reservation Yes Yes Yes Multi-Resolution Transmission Yes Yes Yes Polling Type Sim/Sec/Del/Seq Sim/Sec/Del/Seq Sim/Sec/Del/Seq Delayed Transmission 3-timer 3-timer 3-timer Call Reservation Yes Yes Yes Electronic Coverpage Yes - Super Yes - Super Yes - Super Call Back Message Yes Yes Yes Journal Report Yes Yes TX Verification Repor t Yes Yes Yes Memory Capacity (pgs) 512KB

ECM Yes Yes Yes

(up to 20pages for OPR*)

Broadcasting Yes Yes Yes Quick-Scan Yes Yes Yes

(up to 20pages for OPR*)

Yes

HOL/SWE/UK/IRE/

FRA/NOR/BEL/DEN/SPA/

512KB

(up to 20pages for OPR*)

FAX-T86

Thermal Transfer

WHITE (1517)

14,400

8.5"/8.5" 10

Yes

HOL/SWE/UK/IRE/

GER/AUS/POR

Yes

512KB

*Page memory: 20 pages ITU-T No.1 chart in OPR (out-of-paper reception) in the ECM mode

I - 5

Model Name FAX560 FAX580MC MFC660MC

Quick Scan Yes Yes Yes Out-of-Paper Reception Yes Yes Yes Multi-Copying w/ Sorting Yes Yes Yes Enlargement/Reduction Ratio Yes (50-150%) Yes (50-150%) Yes (50-150%) Multi-Transmission No No No Confidential Mailbox No No No Auto Reduction Yes Yes Yes Message Center No Yes Yes TAD Recording Time No 15 minutes 15 minutes Fax Forwarding/Paging Yes Yes Yes Fax Retrieval Yes Yes Yes Fax-/Voice-on-Demand No No No Fax & Voice Mailbox No No No Help List Yes Yes Yes Missing Link No Ready Included Optional Memory No No No Voice Alarm No No No Output Tray Yes, wire included. Yes, wire included. Yes, wire included. Others Call Manage Call Manage Call Manage

(2/2)

I - 6

(2/2)

Model Name FAX-T72 FAX-T74

Out-of-Paper Reception Yes Yes Multi-Copying w/ Sorting Yes Yes Enlargement/Reduction Ratio Yes (50-150%) Yes (50-150%) Multi-Transmission No (w/o SHIFT key) No (w/o SHIFT key) Confidential Mailbox No No Auto Reduction Yes Yes Message Manager No No TAD Recording Time No No Fax Forwarding/Paging Yes-Only Fax Forwarding Yes-Only Fax Forwarding Fax Retrieval Yes Yes Fax-/Voice-on-Demand No No Fax & Voice Mailbox No No Help List Yes Yes MFL PRO for FAX No No Optional Memory No No Memo Manager No No Mute Key No Yes-music on hold;

Backup for Clock 9 hours 9 hours Output Tray Not available Not available Backup for Page Memory No No Power Consumption Standby:

Less than 2 W (SWITZ) Less than 5 W (Other countries)

Peak: 150 W

Others 

Standby:

Peak: 150 W

Green Sleeves

Less than 2 W (SWITZ, DEN) Less than 5 W (Other countries)

I - 7

Model Name FAX-T76 FAX-T78

Out-of-Paper Reception Yes Yes Multi-Copying w/ Sorting Yes Yes Enlargement/Reduction Ratio Yes (50-150%) Yes (50-150%) Multi-Transmission No (w/o SHIFT key) No (w/o SHIFT key) Confidential Mailbox No No Auto Reduction Yes Yes Message Manager Yes Yes TAD Recording Time 15 minutes 15 minutes Fax Forwarding/Paging Yes-both Yes-both Fax Retrieval Yes Yes Fax-/Voice-on-Demand No No Fax & Voice Mailbox No No Help List Yes Yes MFL PRO for FAX Ready No Optional Memory No No Memo Manager No No Mute Key Yes-music on hold;

Backup for Clock 15 hours 15 hours Output Tray Not available Not available Backup for Page Memory 6 hours 6 hours Power Consumption Standby:

Peak: 150 W

Others

Green Sleeves

Less than 2 W (SWITZ, DEN) Less than 5 W (Other countries)



Yes-music on hold;

4 melodies, 8 patterns, and OFF

Standby:

Less than 2 W (SWITZ) Less than 5 W (Other countries)

Peak: 150 W

Ringer pattern:

8 patterns available

(2/2)

I - 8

Model Name FAX-T82

FAX-T84

Green Sleeves

Out-of-Paper Reception Yes Yes Yes Multi-Copying w/Sorting Yes Yes Yes Enlargement/Redcution Ratio Yes(50-150%) Yes(50-150%) Yes(50-150%) Multi-Transmision No ( w/o SHIFT key) No ( w/o SHIFT key) No ( w/o SHIFT key) Confidential M a ilBox No No No Auto Reduction Yes Yes Yes Message Manager No No Yes TAD Recording Time No No 15 minutes Fax Forwar ding/Paging Yes - Only Fax For warding Yes - Only Fax Forwarding Yes - both Fax Retrieval Yes Yes Yes Fax & Voice on Demand No No No Fax & Voice Mailbox No No No Help List Yes Yes Yes MFL PRO for fax No No No Optional Memory No No No Memo Manager No No No Mute key No Yes - music on hold;

Backup for clock Output tray Not available Not available Not available Backup for Page Memory Power Consumption Stand-by: under 5 w***

Peak: 170 w

Others -

9 hours 9 hours

6 hours 6 hours

Stand-by: under 5 w*** Peak: 170 w

FAX-T86

Yes - music on hold;

Green Sleeves

15 hours

6 hours

(2/2)

Relationship between models and destinations

Base models MC models

w/o handset w/ handset Single-row LCD Double-row LCD

w/ job dial American models  FAX560 FAX580MC/MFC660MC  European models FAX-T72/FAX-T82 FAX-T74/FAX-T84 FAX-T76/FAX-T86 FAX-T78

Asian/Oceanic models  FAX645 FAX685MC/MFC960MC 

Chinese models  FAX1280 FAX1980MC 

Taiwanese models  FAX816 

I - 9

CHAPTER II.

INSTALLATION

CHAPTER III.

THEORY OF OPERATION

CHAPTER III. THEORY OF OPERATION

CONTENTS

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

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

2.1 Scanning Mechanism........................................................................................ III-3

Automatic document feeder (ADF) ................................................................... III-3

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

2.2 Printing Mechanism .......................................................................................... III-3

Automatic cut sheet feeder (ACF) and registration mechanism ....................... III-3

Printing and paper ejecting mechanism ............................................................ III-3

2.3 Power Transmission Switching Mechanism ..................................................... III-3

2.4 Sensors and Actuators...................................................................................... III-4

3. CONTROL ELECTRONICS ...................................................................................... III-6

3.1 Configuration..................................................................................................... III-6

1. OVERVIEW

III - 1

*Not provided on models w/o handset. **Provided on MC models.

2. MECHANISMS

The facsimile equipment is classified into the following mechanisms:

 Scanning Mechanism - ADF mechanism

 Printing Mechanism - ACF and registration mechanism

 Power Transmission Switching Mechanism

 Sensors and Actuators

- Document scanning & feeding mechanism

- Printing and paper ejecting mechanism

III - 2

2.1 Scanning Mechanism

The scanning mechanism consists of the document stacker, automatic document feeder (ADF), separation roller, document LF roller, scanner, document ejection roller, and document sensors. (For details about the sensors, refer to Section 2.4.)

Automatic document feeder (ADF)

If you set documents with their faces down on the stacker and start the transmitting operation, the ADF (consisting of the separation roller and ADF parts) feeds those documents into the equipment, starting from the bottom sheet (first page) to the top (last page), page by page. Each document advances to the scanner with the document LF roller, and then it is fed out of the equipment with the document ejection roller.

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 document pressure bar and the cover glass, it is scanned.

2.2 Printing Mechanism

The printing mechanism consists of the paper feeder, automatic cut sheet feeder (ACF), paper feed roller 32, platen, thermal recording head, paper ejection roller, and sensors. (For details about the sensors, refer to Section 2.4.)

Automatic cut sheet feeder (ACF) and registration mechanism

If the operator sets cut sheets into the paper feeder and receiving operation starts, the ACF (paper feed roller 32 and ACF parts) feeds paper into the equipment, a sheet at a time. After the leading edge of paper passes through the registration sensor actuator, the paper is further fed for the specified time length. Accordingly, the leading edge will reach the platen where the paper skew will be eliminated.

Printing and paper ejecting mechanism

The platen feeds the paper up to the printing position where the thermal recording head prints while the thermal ink ribbon advances. Then the paper is fed out of the equipment with the paper ejection roller.

2.3 Power Transmission Switching Mechanism

The facsimile equipment has a single drive motor whose power transmission route can be switched by the planetary gear system and by changing the motor rotation direction. This switching allows the equipment to function in five operation modes—scanning, paper feeding, recording, paper ejecting, and copying modes.

To switch to a particular mode, the motor rotates in the reverse direction. If the switching arm of the planet gear ASSY turns on the arm HP switch, the motor further rotates by the specified number of pulses to locate the planet gear ASSY in the particular mode position. Then the motor rotates in the forward direction to enter the particular mode.

III - 3

2.4 Sensors and Actuators

This equipment has two photosensors and five mechanical switches as described below.

Sensor name Type Located on

Document front sensor Microswitch (SEN1) Control panel PCB Document rear sensor Microswitch (SEN2) Control panel PCB

Cover sensor Microswitch (SW2) Sensor PCB Hook switch* Microswitch (SW1) Sensor PCB Registration sensor Photosensor Sensor PCB

Ribbon sensor Photosensor Main PCB

Arm HP switch Leaf switch Drive unit

• 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.

• Cover sensor which detects whether the control panel ASSY is closed.

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

• Registration sensor which detects the leading and trailing edges of recording paper, which allows the controller to determine the registration timing and check paper jam.

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

• Arm HP switch which detects whether the switching arm of the drive unit is placed in the home position.

*Not provided on models w/o handset.

The registration sensor and ribbon sensor is a photointerrupter consisting of a light-emitting diode and a light-sensitive transistor. Each of them has an actuator separately arranged (see the next page). When an actuator is not activated, its black end lies in the path of light issued from the lightemitting diode and interrupts its light so that the emitted light does not enter the light-sensitive transistor. If paper or ribbon comes in so as to activate the actuator, the actuator's black end goes out of the light path and the emitted light enters the light-sensitive transistor. This way, the sensor detects the presence of paper or ink ribbon.

III - 4

*Not provided on models w/o handset.

Location of Sensors and Actuators

III - 5

3. CONTROL ELECTRONICS

3.1 Configuration

The hardware configuration of the facsimile equipment is shown below.

*1 On the main PCB is the ribbon sensor. *2 On the sensor PCB are these sensors:

 Cover sensor (SW2)  Hook switch* (SW1)  Registration sensor

*3 On the control panel PCB are these sensors:

 Document front sensor (SEN1)  Document rear sensor (SEN2)

Configuration of Facsimile Equipment

III - 6

CHAPTER IV.

DISASSEMBLY/REASSEMBLY AND

LUBRICATION

CHAPTER IV. DISASSEMBLY/REASSEMBLY AND LUBRICATION

CONTENTS

1. DISASSEMBLY/REASSEMBLY........................................................................... IV-1

n Safety Precautions.............................................................................................. IV-1

Tightening Torque List........................................................................................ IV-2

n Preparation......................................................................................................... IV-3

n How to Access the Object Component................................................................ IV-3

n Disassembly Order Flow..................................................................................... IV-4

1.1 Cover Stopper Link, Ribbon Shaft Stopper, ROM Cover, and Control

Panel ASSY ................................................................................................... IV-5

1.2 Disassembly of the Control Panel ASSY (Document pressure bar and chute

cover ASSY) .................................................................................................. IV-7

1.3 Disassembly of the Chute Cover ASSY (Paper pressure rollers, separation

roller, paper feed roller 32, platen, registration sensor actuator, and lock

bar & lock levers) ........................................................................................... IV-10

1.4 Disassembly of the Control Cover Sub ASSY (ACF parts, ADF parts, panel

rear cover, control panel PCB, FPC key, LCD, and keys) ............................... IV-17

1.5 Handset Mount*1, Dummy Mount*2, Battery ASSY*3, Sensor PCB, Cover

Sensor Actuator, and Hook Switch Actuator*1................................................. IV-21

1.6 Paper Ejection Roller, Document LF Roller, and Document Ejection Roller.... IV-24

1.7 Head Protector, Recording Head ASSY, and Recorder Frame........................ IV-25

1.8 Drive Unit, Motor, and Arm HP Switch ASSY ................................................. IV-28

1.9 Speaker.......................................................................................................... IV-32

1.10 Lower Cover, Support Plate, and CIS Spring.................................................. IV-33

1.11 CIS Film and CIS Unit.................................................................................... IV-34

1.12 Document Pressure Rollers and Document Pinch Roller................................. IV-36

1.13 Bottom Plate, Main PCB, NCU PCB, Power Supply PCB, and Ribbon

Sensor Actuator.............................................................................................. IV-38

2. LUBRICATION...................................................................................................... IV-43

[ 1 ] Separation roller and its gear and paper feed roller 32 and its gear ......... IV-43

[ 2 ] Platen gear (Gear 24) and joint between gears 32 and chute cover

ASSY...................................................................................................... IV-44

[ 3 ] Paper ejection roller, document LF roller, and document ejection roller .. IV-45

1. DISASSEMBLY/REASSEMBLY

nn Safety Precautions

To prevent the creation of secondary problems by mishandling, observe the following precautions during maintenance work.

(1) Unplug the power cord from the power outlet before replacing parts or units. When having

access to the power supply, be sure to unplug the power cord from the power outlet. (2) Be careful not to lose screws, washers, or other parts removed for parts replacement. (3) When using soldering irons and other heat-generating tools, take care not to damage the resin

parts such as wires, PCBs, and covers. (4) Before handling the PCBs, touch a metal portion of the equipment to discharge static

electricity; otherwise, the electronic parts may be damaged due to the electricity charged in

your body. (5) When transporting PCBs, be sure to wrap them in conductive sheets such as aluminum foil. (6) Be sure to reinsert self-tapping screws correctly, if removed. (7) Tighten screws to the torque values listed on the next page. (8) When connecting or disconnecting cable connectors, hold the connector bodies not the

cables. If the connector has a lock, always slide the connector lock to unlock it. (9) Before reassembly, apply the specified lubricant to the specified points. (Refer to Section 2 in

this chapter.) (10) After repairs, check not only the repaired portion but also that the connectors and other

related portions function properly before operation checks.

IV - 1

Tightening Torque List

Location Screw type Q'ty Tightening torque Loosening torque

N•m (kgf•cm) N•m (kgf•cm)

Cover stopper link Taptite, pan B M4x6D10 1 0.69 ±0.20 (7 ±2) Min. 0.40 (4.0) ROM cover Taptite, cup B M3x8 1 0.39 ±0.20 (4 ±2) Min. 0.20 (2.0)

Chute cover ASSY Taptite, cup B M3x8 4 0.39 ±0.20 (4 ±2) Min. 0.20 (2.0) ACF parts Taptite, bind B M3x8 4 0.39 ±0.20 (4 ±2) Min. 0.15 (1.5)

ADF parts Taptite, pan B M3x6 1 0.39 ±0.20 (4 ±2) Min. 0.10 (1.0) Panel rear cover Taptite, cup B M3x8 4 0.39 ±0.20 (4 ±2) Min. 0.15 (1.5) Control panel PCB Taptite, cup B M3x8 2 (1)* 0.39 ±0.20 (4 ±2) Min. 0.20 (2.0) Handset mount Taptite, cup B M3x8 1 0.49 ±0.20 (5 ±2) Min. 0.15 (1.5) Sensor PCB Taptite, cup B M3x8 1 0.39 ±0.20 (4 ±2) Min. 0.20 (2.0) Recorder frame Taptite, cup B M3x8 2 0.49 ±0.20 (5 ±2) Min. 0.20 (2.0) Drive unit Taptite, cup B M3x8 2 0.49 ±0.20 (5 ±2) Min. 0.20 (2.0)

Sub frame ASSY Taptite, cup B M3x8 2 0.49 ±0.20 (5 ±2) Min. 0.20 (2.0) Motor Screw, pan (spring washer) M3x6 1 0.69 ±0.20 (7 ±2) Min. 0.34 (3.5)

Lower cover Taptite, cup B M3x8 2 0.49 ±0.20 (5 ±2) Min. 0.15 (1.5) CIS spring Taptite, cup B M3x8 1 0.39 ±0.20 (4 ±2) Min. 0.20 (2.0) CIS holder Taptite, cup B M3x8 1 0.39 ±0.20 (4 ±2) Min. 0.20 (2.0)

Taptite, bind B M3x8 1 0.39 ±0.10 (4 ±1) Min. 0.20 (2.0)

Bottom plate Taptite, cup B M3x8 5 0.49 ±0.20 (5 ±2) Min. 0.15 (1.5) (Drive unit) Taptite, cup S M3x6 1 0.69 ±0.20 (7 ±2) Min. 0.40 (4.0) Grounding wire Screw, pan (plain washer) M4x6DB 1 0.69 ±0.20 (7 ±2) Min. 0.40 (4.0)

Main PCB Taptite, cup B M3x8 1 0.49 ±0.20 (5 ±2) Min. 0.15 (1.5)

* The control panel PCB of base models is secured with a single screw.

IV - 2

 Preparation

Prior to proceeding to the disassembly procedure,

(1) Unplug

- the modular jack of the telephone line,

- the modular jack of the curled cord* (and remove the handset*),

- the PC interface cable** and

- the modular jack of an external telephone set if connected. (Not shown below.)

(2) Remove

- the paper wire extension and paper feeder

- the output paper extension, and

- the ribbon cartridge.

 How to Access the Object Component

• On the next page is a disassembly order flow which helps you access the object components.

To remove the motor, for example, first find it on the flow and learn its number ( case). You need to remove parts numbered

• Unless otherwise specified, the disassembled parts or components should be reassembled in

the reverse order of removal.

*Not provided on the FAX-T72/FAX-T82. **Provided on the MFC660MC.

in this

, , and so as to access the motor.

IV - 3

IV - 4

1.1 Cover Stopper Link, Ribbon Shaft Stopper, ROM Cover, and Control Panel ASSY

(1) Open the control pane ASSY (in the direction of arrow •). (2) Remove the screw from the cover stopper link. Pull the link outwards (arrow ‚) to release it

from the control panel ASSY and then turn it to the front (arrow ƒ) to remove. (3) Press the latch of the ribbon shaft stopper with a screwdriver to release it from the main

frame. The spring also comes off.

IV - 5

+ 164 hidden pages