Brother LX-300, LX-1200 Service Manual

SERVICE MANUAL

MODEL: LX-1200/LX-300

COOL LAMINATOR SERVICE MANUAL

MODEL: LX-1200/LX-300

Unauthorized copying of all or part of the contents of this manual is prohibit ed. The contents of this manual may change without notice.

INTRODUCTION

This Service Manual describes the Cool Laminator LX-1200/LX-300 specifications, operating principles of the mechanisms, disassembly and reassembly procedures, and maintenance and troubleshooting procedures.

This Service Manual is intended for use by trained technicians. It is not intended f or use by the user.

The manual is divided into the following chapters.

Chapter 1. Specifications Chapter 2. Mechanisms Chapter 3. Disassembly Procedures Chapter 4. Reassembly Procedures Chapter 5. Electronic Controllers Chapter 6. Maintenance Chapter 7. Troubleshooting Appendix Main PCB Circuit Diagram

Chapter 1.

SPECIFICATIONS

CONTENTS

Chapter 1. SPECIFICATIONS

1.1 Mechanical Specifications................................................................................................. 1-1

1.1.1 Appearance........................................................................................................... 1-1

1.1.2 Operating Panel....................................................................................................1-2

1.1.3 Indicators...............................................................................................................1-2

1.2 Electrical Specifications ....................................................................................................1-2

1.2.1 Power Supply........................................................................................................1-2

1.1 Mechanical Specifications

1.1.1 Appearance

[1] External dimensions (W x D x H) 468 mm x 387 mm x 273 mm [2] Weight Approx. 8.3 kg (main unit only)

468 mm

273 mm

Fig. 1.1-1 Appearance

387 mm

1-1

1-2

1.1.2 Operating Panel

P C

[1] Number of Keys 7 (Start key, Stop key, Cut key, Feed key,

Extra border key, Continuous key, Cutting mode selector)

[2] Key Arrangement

Cut key

Feed key

1.1.3 Indicators

[1] Positions Start key LED (green) Continuous key LED (green) Extra border key LED (green) Error LED (red)

ontinuous key

top ke y

Extra border key

Fig. 1.1-2 Key Arrangement

tart key

ower switch utting mode selector

1.2 Electrical Specifications

1.2.1 Power Supply

[1] Power supply Commercial power supply (locally available power supply).

Converted to DC by the AC adaptor.

Chapter 2.

MECHANISMS

CONTENTS

Chapter 2. MECHANISMS

2.1 Mechanical Operating Principles......................................................................................2-1

2.1.1 Description of Mechanisms (Border Mode)..........................................................2-1

2.1.2 Feed and Compression Mechanisms...................................................................2-2

2.1.3 Cutter Mechanism (Border Mode) ........................................................................2-5

2.1.4 Paper Size Detector Mechanism..........................................................................2-7

2.1.5 Trimming Mechanism........................................................................................... 2-9

2.1 Mechanical Operating Principles

P s

2.1.1 Description of Mechanisms (Border Mode)

1. When a document is inserted into the paper loading gate, the paper feed rollers feed it to the driving roller.

2. As the document passes between the paper feed rollers, the paper size detector determines its size (length and width).

3. When the document passes between the film cartridges it is sandwiched between the upper and lower films in the compression-feed area, where the films and document are compressed between the driving roller and sub-roller.

4. The compressed document and film is fed to the cutting area, where it is cut to the document size detected by the paper size detector with borders added. It is t hen transported to the next stage.

5. The laminated document is fed out of the eject gate by the paper eject rollers.

Paper length detector

Paper loading area

Paper feed roller

aper loading gate

oll film (lower)

Compression-feed area

aper width de tector

aper feed

ub-roller

riving roller

oll film (upper)

Film cartridge

Sub-roller

Y-cutter blad e

X-cutter unit

Paper eject roller

ject gate

Paper eject sub-roller

Ejecting area

utting area

Fig. 2.1-1 Description of Mechanis m s

2-1

2-2

2.1.2 Feed and Compression Mechanisms

The feed and compression mechanism controls the motor drive to feed the document into the film cartridge, compression-feed the films, and eject t he laminat ed document .

The operation is basically divided into three separate operations: feeding a document into the Film cartridge, compression-feeding the films, and ejecting the laminat ed document.

Normal Mode When documents are laminated one at a time (that is, not in the Continuous mode), t he

lamination operation comprises the operations A and B below.

A. Feeding document into Film cartridge and ejecting the laminated document

S

1. The SG motor mounted at the right of the chassis runs to rotate the Control cam

gear (also mounted at the right of the chassis) to its prescribed position.

2. As the Control cam gear rotates, the LF change shaft is rotated to its prescribed

position by the cam on the Control cam gear.

3. A cam is mounted on the LF motor end of the LF change shaft (at the left of t he

chassis). As the LF change shaft rotates, this cam rotates the t wo Gear holders at the left of the chassis, which transmit t he LF mot or drive as shown in t he diagram.

4. As a result of steps 1 to 3 above, the drive is transmitted to the Paper f eed roller

and Paper eject roller. The document is fed into the Film cartridge by the Paper feed roller as the LF motor rotates. After the trailing edge has been cut by the X cutter, the laminated document is ejected by the Paper eject roller.

ear holder

Paper feed roller

riving roller

Paper eject roller

LF moto r

ear holder

Fig. 2.1-2 Operation when Feeding Document into the Fil m Cart ri dge or when Ejecting a Laminated Document

F change shaft

2-3

B. Compression-feeding the films

S

1. The SG motor mounted at the right of the chassis runs to rotate the Control cam

gear (also mounted at the right of the chassis) to its prescribed position.

2. As the Control cam gear rotates, the LF change shaft is rotated to its prescribed

position by the cam on the Control cam gear.

3. A cam is mounted on the LF motor end of the LF change shaft (at the left of t he

chassis). As the LF change shaft rotates, this cam rotates the t wo Gear holders at the left of the chassis, which transmit t he LF mot or drive as shown in t he diagram.

4. As a result of steps 1 to 3 above, the drive is transmitted to the Driving roller t hat

compresses the films. During this operation, the Paper feed roller and Paper eject roller rotate continuously to feed in documents and eject laminated documents.

Paper feed roller

ear holder

Paper feed holder

LF moto r

Fig. 2.1-3 Operation during Film Compression-Feed

ear holder

F change shaft

Driving roller

Paper eject roller

2-4

Continuous Mode

When the second or subsequent document are inserted in the Continuous mode, the operation C described below feeds the documents to the prescribed position.

C. Feeding Document Only into Film Cartridge

S

1. The SG motor mounted at the right of the chassis runs to rotate t he Control cam gear (also mounted at the right of the chassis) to its prescribed position.

2. As the Control cam gear rotates, the LF change shaft is rotated t o it s prescribed position by the cam on the Control cam gear.

3. A cam is mounted on the LF motor end of the LF change shaft (at the left of t he chassis). As the LF change shaft rotates, this cam rotates the t wo Gear holders at the left of the chassis, which transmit the LF mot or drive as shown in t he diagram.

4. As a result of steps 1 to 3 above, the drive is transmitted t o t he Paper f eed roller only. A document is fed into the Film cartridge by the Paper feed roller as the LF motor rotates.

aper feed roller

Paper feed holder

ear holder

LF moto r

ear holder

F change shaft

Fig. 2.1-4 Operation when Feeding Document into the Fil m Cart ri dge i n the Continuous Mode

2-5

2.1.3 Cutter Mechanism (Border Mode)

The cutter mechanism cuts the laminated document to the size of the document plus an added border. Both edges of the films are cut to suit the width of the document and the leading edge and trailing edge are cut according to the document length.

Y-Cutter Vertical Drive Operation

S

The SG motor drive rotates the Control cam gear to its prescribed position. This rotation is transmitted via the YC lift arm and YC lift shaf t t o rotate the Y-diversion lever and set the Y cutter to the cutting position.

Y-diversion lever

-cutter blade

ontrol cam gear

YC lift shaft

C lift arm

Fig. 2.1-5 Y-Cutter Vertical Driv e Operat i on

SG motor

2-6

Cutting Leading and Trailing Edges (X-cutter Mechanism)

S

1. All the rollers which feed the document stop when the cut position at the leading

edge of the document reaches the cutting position of the rotary cutt er and f ixedblade cutter.

2. The DC motor rotates to drive the carriage in the X-cutter assy via the spiral

mechanism (not illustrated).

3. As the carriage makes a reciprocal movement, the rotary cutter attached to the

carriage moves against the fixed cutter to cut the compressed leading edge of the document.

4. The rotation of the rollers which feed the document restarts when the cutting of

the leading edge is complete. Then, when the cut position at t he trailing edge of the document reaches the cutting position of the rotary cutter and f ixed-blade cutter, the feed rollers stop again.

5. The document trailing edge is cut in the same way as the leading edge by a

reciprocal movement of the rotary cutter attached to the carriage.

6. The rotation of the Paper eject roller and Paper feed roller restarts to feed the

laminated document from the eject gate after the cut t ing of t he t r ailing edge is complete. (In this timing, the driving roller does not rotate.)

Document

Paper eject roller

Paper eject sub-roller

ection A-A'

Paper eject roller

Paper eject sub-roller

Fig. 2.1-6 Cutting Leading and Trailing Edges (X-cutter Mechanism)

Carriage

otary cutter

ixed cutter

Sub-roller

riving roller

Carriage

ixed cutter

otary cutter

ub-roller

ocument

riving roller

2-7

2.1.4 Paper Size Detector Mechanism

Paper Length Detection

S

1. When the leading edge of the document passes between the Paper feed rollers,

the Actuator top operates about the pivot to turn on t he Paper sensor and det ect the document leading edge.

2. When the trailing edge of the document passes out of the Paper feed r oller s, t he

Actuator top reverts to its original position to turn off t he Paper sensor and detect the document trailing edge.

Paper feed sub-roller

Paper feed roller

Document feed surface

Paper sensor

Actuator top

Fig. 2.1-7 Paper Length Detection

2-8

Paper Width Detection (Y-CA sensor)

Y Y

S

1. As the Y-cutter arm (Y-CA sensor carriage) moves in the direction of the arrow,

the document contacts the Actuator Y, which rotat es about t he pivot t o swit ch of f the Y-CA sensor (photosensor).

2. When the Y-CA sensor turns off, the Y-cutter arm movement stops and this

position is detected as the document width.

-cutter a rm

sensor carriage

Actuator Y

Photosensor ON status

∗

Photosensor OFF status

∗

Pivot

Fig. 2.1-8 Paper Width Detection

-CA sensor

ocument

2-9

2.1.5 Trimming Mechanism

1. When a corner of the laminated document is inserted over the T-cutter plate, t he Tsensor lever operates a leaf switch (TRI) that detects the document.

2. When the document is detected, the motor gear of the SG Motor rot at es f r om it s reference position to the prescribed position to rotate the Control cam gear in the direction of the arrow (counterclockwise) via a series of gears.

3. Rotation of the Control cam gear forces the T-cam roller to move vertically, such that T-lever also moves vertically, rotating around its pivot.

4. As T-lever moves vertically, the T-cutter assy mounted on the end of T-lever moves up and down, trimming the corner of the laminated document into a rounded radius.

Leaf switch

T-sensor lever

-cam roller

-lever

T-cutter unit

Pivot

Control cam gea r

SG motor

Fig. 2.1-9 Trimming Mechanism

Chapter 3.

DISASSEMBLY PROCEDURES

CONTENTS

Chapter 3. DISASSEMBLY PROCEDURES

3.1 Safety Precautions............................................................................................................3-1

3.2 Removing the Film Cartridge ............................................................................................3-1

3.3 Covers ...............................................................................................................................3-2

3.3.1 Removing the Trimmer Cover ..............................................................................3-2

3.3.2 Removing the Top Cover B ..................................................................................3-3

3.3.3 Removing the Sub-tray.........................................................................................3-4

3.3.4 Removing Paper Tray A and Paper Guide...........................................................3-4

3.3.5 Removing the Body Cover....................................................................................3-5

3.3.6 Removing the Front Cover.................................................................................... 3-7

3.3.7 Removing Paper Tray B .......................................................................................3-8

3.3.8 Removing the Back Cover....................................................................................3-8

3.3.9 Removing the Cover Switch .................................................................................3-9

3.3.10 Removing the Dial Switch Holder Assy B ..........................................................3-10

3.3.11 Removing the Push Switch Assy........................................................................ 3-11

3.4 Chassis Assy................................................................................................................... 3-12

3.4.1 Removing the Harness Connectors ...................................................................3-12

3.4.2 Removing the PST PCB (Paper Sensor PCB)................................................... 3-13

3.4.3 Removing the Chassis Assy...............................................................................3-14

3.5 PCBs ............................................................................................................................... 3-16

3.5.1 Removing the Main PCB ....................................................................................3-16

3.5.2 Removing the Jack PCB Assy............................................................................ 3-16

3.5.3 Removing the SW PCB Assy .............................................................................3-17

3.6 X-cutter Unit ....................................................................................................................3-18

3.6.1 Removing the X-cutter Unit.................................................................................3-18

3.6.2 Removing the Leaf Switch F Assy......................................................................3-18

3.7 Y-CA Chassis Assy and Y-cutter Arm............................................................................ 3-19

3.7.1 Removing the Y-CA Chassis Assy.....................................................................3-19

3.7.2 Removing the Y-CA Motor..................................................................................3-20

3.7.3 Removing the Y-cutter Arm ................................................................................3-20

3.8 Y-sensor Rail Unit ...........................................................................................................3-21

3.8.1 Removing the Y-sensor Rail Unit .......................................................................3-21

3.8.2 Disassembling the Y-sensor Rail Unit................................................................3-22

3.9 Roller Holder Assy ..........................................................................................................3-23

3.9.1 Removing the Roller Holder Assy ......................................................................3-23

3.10 Paper Feed Roller...........................................................................................................3-24

3.10.1 Removing the Paper Feed Holder Assy.............................................................3-24

3.11 Left Side of the Main Chassis .........................................................................................3-25

3.11.1 Removing the LF Motor ......................................................................................3-25

3.11.2 Removing the Gears...........................................................................................3-26

3.12 Right Side of the Main Chassis.......................................................................................3-27

3.12.1 Removing the Right Side of the Chassis............................................................3-27

3.12.2 Removing the YC Lift Shaft and LF Change Shaft ............................................3-28

3.13 Paper Eject Roller ...........................................................................................................3-30

3.13.1 Removing the Paper Eject Roller Unit................................................................3-30

3.14 Y-diversi on Lever............................................................................................................3-31

3.14.1 Removing the Y-diversion Lever Assy ...............................................................3-31

3.15 Trimming Mechanism...................................................................................................... 3-32

3.15.1 Disassembling the Trimming Mechanism ..........................................................3-32

3.16 Driving Roller ...................................................................................................................3-32

3.16.1 Removing the Driving Roller...............................................................................3-32

3.17 Main Chassis B ...............................................................................................................3-33

3.17.1 Removing the Main Chassis B ...........................................................................3-33

3.17.2 Removing the Cassette Holder...........................................................................3-34

3.17.3 Removing the ENC Sensor PCB........................................................................3-34

3.17.4 Removing the Main Chassis L, R, and F............................................................3-35

3-1

3.1 Safety Precautions

•

When conducting disassembly operations, place the unit on a grounded anti-static sheet. LSI and other electronic components are sensitive to static electricity and may be damaged if touched while charged.

•

Before transporting a circuit board, wrap it in a conducting sheet such as aluminum foil.

•

When using a soldering iron or other heat-producing tool, ensure that heat does not damage wires, circuit boards, or plastic parts such as covers.

•

Take care not to lose small screws or washers removed when replacing parts.

•

As a safety precaution, wear gloves when conducting disassembly operations.

3.2 Removing the Film Cartridge

1. Open the top cover and move the Y-cutter arm as far as possible to the left.

2. Push the Set buttons R/L in the direction indicated by the arrow t o unlock t he Roller holder assy.

Y-cutter arm

op cover

Set butto n R/L

Fig. 3.2-1 Removing the Film Cartridge 1

3-2

3. Lift up the Roller holder assy and pull out the Film cartridge.

Roller holder assy

3.3 Covers

ilm cartrid ge

Fig. 3.2-2 Removing the Film Cartridge 2

3.3.1 Removing the Trimmer Cover

1. Pull out the T-cutter plate and the Trimmer bottom cover.

T-cutter plate

Fig. 3.3-1 Removing the Trimmer cover 1

rimmer bottom cover

3-3

2. Remove the two Trimmer cover screws. Remove the Trimmer upper cover.

rimmer cover screws

Fig. 3.3-2 Removing the Trimmer cover 2

3.3.2 Removing the Top Cover B

Open the Top cover B. Lift the Top cover B shafts out of t he shaf t recesses in the Body cover and remove Top cover B.

rimmer upper cover

Top co ver B

ody cover

Shafts

Fig. 3.3-3 Removing the Top Cover B

haft recesses

3-4

3.3.3 Removing the Sub-tray

1. Open the Sub-tray.

2. Flex the center of the sub-tray toward you to release the shafts from the shaft recesses in the Body cover. Remove the sub-tray.

ub-tray

Fig. 3.3-4 Removing the Sub-tray

3.3.4 Removing Paper Tray A and Paper Guide

1. Flex the center of the top of Paper tray A in the direction of the arrow, then release the left and right hooks. Pull Paper tray A upward to remove it.

Shaft re cesses

Body cover

Fig. 3.3-5 Removing Paper Tray A

Paper tray A

2. Disengage the Paper guide hooks (at the rear of the Paper tray) CL2000011 from Paper tray A. Remove the Paper guide.

Paper gu ide

Hooks

Fig. 3.3-6 Removing the Paper Guide

3.3.5 Removing the Body Cover

1. Remove the two Bottom cover screws B from the bottom of the Bottom cov er B. And remove one screw from the surface of Body cover.

∗ When inverting the unit to perform this work, place it on a soft cloth to avoid

scratching the cover.

Pape r tray

Bottom cover screws B

Soft cloth

Fig. 3.3-7 Removing the Body Cover 1

3-5

3-6

2. Lift the rear of the Bottom cover in the direction of arrow B while pushing it in t he

direction of arrow A to release the six hooks on the rear face.

3. Push the sides of Body cover in the directions indicated by the arrows C to release the hook at the left and right side.

4. Push on the Y-diversion lever assy and release the two hooks from the front of the Body cover.

Side hook s

Body cover

ear hooks

Bottom cove r B

Front hooks

Fig. 3.3-8 Removing the Body Cover 2

-diversion lever assy

5. Disconnect the Switch harness assy and the Cover switch assy connectors from the Main PCB and remove the Body cover.

witch harness assy

over swit ch assy

Fig. 3.3-9 Removing the Body Cover 3

3-7

3.3.6 Removing the Front Cover

1. Remove the two Front cover screws under the Bottom cover B.

∗

When removing the Body cover, remove the two Front cover screws and the two screws at the rear of the Bottom cover B at the same time.

∗

When inverting the unit to perform this work, place it on a soft cloth to avoid scratching the cover.

ront cover screws

Fig. 3.3-10 Removing the Front Cover 1

Soft cloth

2. Pull the front cover forward to remove it. (The Body cover must be removed before removing the Front cover.)

ront cover

Fig. 3.3-11 Removing the Front Cover 2

3.3.7 Removing Paper Tray B CL2000011

1. Remove Tray B Stopper.

2. Lift the top of Paper tray B in the direction of arrow A to disengage t he lug from the

Cassette holder.

3. Slide Paper tray B in the direction of arrow B, then lift it in t he direct ion of arrow C t o remove it.

Paper tray B

Lug

Fig. 3.3-12 Removi ng Paper Tray B

3.3.8 Removing the Back Cover

1. Remove the Back cover spring.

Body cover

Back cover

Cassette hold er

Back cover sprin g

Fig. 3.3-13 Rem ovi ng t he Back Cover 1

3-8

+ 145 hidden pages

Brother LX-300, LX-1200 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual