Brother BAS-511 Owner's Manual

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LK3-B430E

INSTRUCTION MANUAL

LK3-B431E LK3-B432E LK3-B433E



Please read this manual before using the machine. Please keep this manual within easy reach for quick reference.

ELECTRONIC LOCKSTITCH BAR TACKER ELECTRONIC LOCKSTITCH BELT LOOP BAR TACKER ELECTRONIC LOCKSTITCH EYELET BUTTONHOLE END

BAR TACKER ELECTRONIC LOCKSTITCH DECORATIVE PATTERN TACKER

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Thank you very much for buying a BROTHER sewing machine. Before using your new machine, please read the safety instructions below and the explanations given in the instruction manual.

With industrial sewing machines, it is normal to carry out work while positioned directly in front of moving parts such as the needle and thread take-up lever, and consequently there is always a danger of injury that can be caused by these parts. Follow the instructions from training personnel and instructors regarding safe and correct operation before operating the machine so that you will know how to use it correctly.

SAFETY INSTRUCTIONS

1. Safety indications and their meanings

This instruction manual and the indications and symbols that are used on the machine itself are provided in order to ensure safe operation of this machine and to prevent accidents and injury to yourself or other people. The meanings of these indications and symbols are given below.

Indications

Symbols

DANGER

CAUTION

................ This symbol ( ) indicates something that you should be careful of. The picture inside the triangle indi-

cates the nature of the caution that must be taken. (For example, the symbol at left means “beware of injury”.)

................ This symbol ( ) indicates something that you

of the thing that must be done. (For example, the symbol at left means “you must make the ground connection”.)

The instructions which follow this term indicate situations where failure to follow the instructions will almost certainly result in death or severe injury.

The instructions which follow this term indicate situations where failure to follow the instructions could cause injury when using the machine or physical damage to equipment and surroundings.

must not do.

must do. The picture inside the circle indicates the nature

LK3-B430E-, B431E-, B432E-, B433E- Mark II

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2. Notes on safety

Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box. Touching areas where high voltages are present can result in severe injury.

DANGER

CAUTION

Environmental requirements

Use the sewing machine in an area which is free from sources of strong electrical noise such as high-

frequency welders. Sources of strong electrical noise may cause problems with correct operation.

Any fluctuations in the power supply voltage should be within ±10% of the rated voltage for the machine. Voltage fluctuations which are greater than this may cause problems with correct operation.

The power supply capacity should be greater than the requirements for the sewing machine's electrical consumption. Insufficient power supply capacity may cause problems with correct operation.

Installation

Machine installation should only be carried out by a qualified technician.

Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done.

The sewing machine weighs more than 47 kg. The installation should be carried out by two or more people.

Do not connect the power cord until installation is complete, otherwise the machine may operate if the foot switch is pressed by mistake, which could result in injury.

Hold the machine head with both hands when tilting it

back or returning it to its original position.

Furthmore, after tilring back the machine head, do not

push the face plate side or the pulley side from above, as this could cause the machine head to topple over, which may result in personal injury or damage to the machine.

Be sure to connect the ground. If the ground connection is not secure, you run a high risk of receiving a serious electric shock, and problems with correct operation may also occur.

The ambient temperature should be within the range of 5°C to 35°C during use. Temperatures which are lower or higher than this may cause problems with correct operation.

The relative humidity should be within the range of 45% to 85% during use, and no dew formation should occur in any devices. Excessively dry or humid environments and dew formation may cause problems with correct operation.

Avoid exposure to direct sunlight during use. Exposure to direct sunlight may cause problems with correct operation.

In the event of an electrical storm, turn off the power and disconnect the power cord from the wall outlet. Lightning may cause problems with correct operation.

All cords should be secured at least 25 mm away from any moving parts. Furthermore, do not excessively bend the cords or secure them too firmly with staples, otherwise there is the danger that fire or electric shocks could occur.

Install the belt covers to the machine head and motor.

If using a work table which has casters, the casters should be secured in such a way so that they cannot move.

Be sure to wear protective goggles and gloves when handling the lubricating oil and grease, so that they do not get into your eyes or onto your skin, otherwise inflammation can result. Furthermore, do not drink the oil or eat the grease under any circumstances, as they can cause vomiting and diarrhoea. Keep the oil out of the reach of children.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

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CAUTION

Sewing

This sewing machine should only be used by operators who have received the necessary training in safe use beforehand.

The sewing machine should not be used for any applications other than sewing.

Be sure to wear protective goggles when using the machine. If goggles are not worn, there is the danger that if a needle breaks, parts of the broken needle may enter your eyes and injury may result.

Set the needle to the needle up stop position before turning off the power. If this is not done, the wiper may strike the needle, which might cause the needle to break.

Turn off the power switch at the following times, otherwise the machine may operate if the foot switch is pressed by mistake, which could result in injury.

• When threading the needle

• When replacing the needle and bobbin

• When not using the machine and when leaving the machine unattended

Cleaning

Set the needle to the needle up stop position before turning off the power. If this is not done, the wiper may strike the needle,

which might cause the needle to break. Turn off the power switch before carrying out cleaning,

otherwise the machine may operate if the foot switch is pressed by mistake, which could result in injury.

If using a work table which has casters, the casters should be secured in such a way so that they cannot move.

Attach all safety devices before using the sewing machine. If the machine is used without these devices attached, injury may result.

Do not touch any of the moving parts or press any objects against the machine while sewing, as this may result in personal injury or damage to the machine.

If an error occurs in machine, or if abnormal noises or smells are noticed, immediately turn off the power switch. Then contact your nearest Brother dealer or a qualified technician.

If the machine develops a problem, contact your nearest Brother dealer or a qualified technician.

Maintenance and inspection

Maintenance and inspection of the sewing machine should only be carried out by a qualified technician.

Ask your Brother dealer or a qualified electrician to carry out any maintenance and inspection of the electrical system.

Set the needle to the needle up step position before turning off the power. If this is not done, the wiper may strike the needle, which might cause the needle to break.

Turn off the power switch and disconnect the power cord from the wall outlet at the following times, otherwise the machine may operate if the foot switch is pressed by mistake, which could result in injury.

• When carrying out inspection, adjustment and maintenance

• When replacing consumable parts such as the rotary hook

If the power switch needs to be left on when carrying out some adjustment, be extremely careful to observe all safety precautions.

Hold the machine head with both hands when tilting it back or returning it to its original position. Furthermore, after tilting back the machine head, do not push the face plate side or the pulley side from above, as this could cause the machine head to topple over, which may result in personal injury or damage to the machine.

Use only the proper replacement parts as specified by Brother.

If any safety devices have been removed, be absolutely sure to re-install them to their original positions and check that they operate correctly before using the machine.

Any problems in machine operation which result from unauthorized modifications to the machine will not be covered by the warranty.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

iii

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3. Warning labels

The following warning labels appear on the sewing machine. Please follow the instructions on the labels at all times when using the machine. If the labels have been removed or are difficult to read, please contact your nearest Brother dealer.

Hazardous voltage will cause injury.

Turn off main switch and wait 5 minutes before opening this cover.

Hochspannung verletzungsgefahr!

Bitte schalten sie den hauptschalter aus und warten sie 5 minuten, bevor sie diese abdeckung öffnen.

Un voltage non adapté provoque des blessures.

Eteindrel'interrupteur et attendre 5 minutes avantd' ouvrir le capot

Safety devices

Un voltaje inadecuado puede provocar las heridas.

Apagar el interruptor principal y esperar 5 minutos antes de abrir esta cubierta.

Eye guard Finger guard

Moving parts may cause injury.

Operate with safety de vices . Turn off main switch before

Thread take-up cover Thread take-up solenoid cover Belt cover Motor cover, etc.

threading, changing bobbin and needle, cleaning etc.

Be sure to connect the ground. If the ground connection is not secure, you run a high risk of receiving a serious electric shock, and problems with correct operation may also occur.

Direction of operation

Eye guard

Thread

take-up cover

Thread takeup solenoid cover

Finger guard

Motor cover

LK3-B430E Mark II LK3-B432E Mark II LK3-B433E Mark II

2 Belt cover

Thread take-up cover

Thread take-up solenoid cover

Eye guard

Finger guard

B432E Mark II

Belt cover

Motor cover

[LK3-B431E Mark II]

LK3-B430E-, B431E-, B432E-, B433E- Mark II

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CONTENTS

1. NAME OF EACH PART ............................... 01

2. SPECIFICATIONS ......................................... 02

2-1. Specifications ....................................... 2

2-2. Program list .......................................... 3

3. INSTALLATION............................................. 07

3-1. Power table ........................................... 7

3-2. Installing the motor ............................. 9

3-3. Installing the motor pulley .................. 9

3-4. Installing the control box .................... 10

3-5. Installing the rubber cushions ............ 11

3-6. Installing the oil pan ............................ 11

3-7. Installing the cushions ......................... 11

3-8. Installing the machine head ............... 12

3-9. Installing the head rest ........................ 12

3-10. Installing the liquid cooling tank,

optional ................................................. 12

3-11. Installing the operation panel ............. 13

3-12. Connecting the ground wire ............... 13

3-13. Connecting the cords ........................... 14

3-14. Installing the V-belt .............................. 15

3-15. Installing the belt cover ....................... 16

3-16. Installing the foot switch ..................... 16

3-17. Installing the motor cover ................... 17

3-18. Installing the spool stand .................... 17

3-19. Installing the eye guard ...................... 17

4. LUBRICATION............................................... 18

4-1. Lubrication points ................................ 18

5. OPERATION .................................................. 19

5-1. Name and function of each

operation panel item ........................... 19

5-2. Operating procedure ............................ 21

6. CHECKING THE SEWING PATTERN ....... 22

7. CORRECT USE......................................... 23

7-1. Selecting the needle and thread ........ 23

7-2. Installing the needle ............................ 23

7-3. Threading the upper thread ................ 23

7-4. Wi ndin g th e lower thread ................... 24

7-5. Replacing the bobbin case and

threading the thread ............................ 25

7-6. Sewing conditions and thread

tension ................................................... 25

8. SEWING ................................................... 28

9-4. Cleaning the control box air inlet

port ........................................................ 31

9-5. Cleaning the eye guard ....................... 31

9-6. Checking the needle ............................ 31

10.STANDARD ADJUSTMENTS ................. 32

10-1. Adj ust ing t he needle bar height ......... 32

10-2. Adjusting the needle bar lift

amount.................................................. 32

10-3. Adjusting the driver needle guard ..... 33

10-4. Adjusting the needle clearance.......... 33

10-5. Adjusting the shuttle race thread

guide...................................................... 33

10-6. Adjusting the thread take-up

amount.................................................. 34

10-7. Adjusting the movable knife ............... 34

10-8. Adjusting the work clamp lift

amount.................................................. 36

10-9. Work clamp pressure adjustment ...... 37

10-10.Work clamp closing-distance

adjustment ............................................ 38

10-11.Work clamp interchangeability ........... 38

10-12.Adjusting the needle up stop

position ................................................. 39

10-13.Adjusting the thread wiper ................. 39

10-14.Checking the input sensor and

DIP switch input ................................... 40

10-15.Checking the input voltage ................. 41

10-16.Clearing all memory settings ............. 41

10-17.Moving stitch patterns ......................... 42

11.USING THE COUNTERS......................... 43

11-1. Using the bobbin thread counter ....... 43

11-2. Using the production counter ............ 43

12.CHANGING FUNCTIONS USING

THE DIP SWITCHES ................................ 44

12-1. Operation panel DIP switches ............ 44

12-2. Setting the presser mode ................... 44

12-3. DIP switches inside the control

box ......................................................... 45

12-4. Using user programs ........................... 46

13.CHANGING SPECIAL FUNCTIONS

USING THE MEMORY SWITCHES ........ 48

13-1. Using the cycle sewing function ........ 50

14.TABLE OF ERROR CODES...................... 52

15.GAUGE PARTS LIST ACCORDING

TO SUBCLASSES.................................... 54

9. MAINTENANCE AND INSPECTION ....... 29

9-1. Cleaning the rotary hook .................... 29

9-2. Lubrication............................................ 30

9-3. Draining the oil ..................................... 31

LK3-B430E-, B431E-, B432E-, B433E- Mark II

16.TROUBLESHOOTING ................................. 62

17.OPTIONAL PARTS ....................................... 65

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1 . NAME OF EACH PART

1. NAME OF EACH PART

LK3-B430E Mark II LK3-B432E Mark II LK3-B433E Mark II

y !1

B432E Mark II

[LK3-B431E Mark II]

Safety devices;

qPower switch !0Finger guard wControl box !1Eye guard eOperation panel !2Thread take-up cover rFoot switch !3Belt cover tMotor !4Motor cover yTension release lever !5Thread take-up solenoid cover uPulley iSpool stand oThread take-up lever

LK3-B430E-, B431E-, B432E-, B433E- Mark II

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2 . SPECIFICATIONS

2-1 . Specifications

2 . SPECIFICATIONS

BROTHER INDUSTRIES, LTD.

LK3-B430E-3

MADE IN JAPAN

Ordinary materials

5 2

Denim Knitted materials

Stitch formation Maximum sewing

speed Maximum pattern size

Feed mechanism Stitch length

Number of stitches

Maximum stitch number

BROTHER INDUSTRIES, LTD.

LK3-B431E-3

MADE IN JAPAN

Bar tacking length 6 - 14mm

Bar tacking length 14 - 25mm

LK3-B430E Mark II

Electronic lockstitch

bar tacker

R-θ intermittent feed mechanism (pulse-motor driven mechanism)

Variable (14, 15, 19,

21, 22, 28, 29, 30, 35,

42, 43, 45, 56, 64

stitches pre-set)

20,000 stitches (including 10,000 stitches which can be added)

BROTHER INDUSTRIES, LTD.

LK3-B432E

MADE IN JAPAN

LK3-B431E Mark II

Electronic lockstitch

belt loop bar tacker

Single needle lock stitch

0.1-10.0 mm

Variable ( 21, 28, 35,

42, 45 stitches pre-

set)

LK3-B432E Mark II

Electronic lockstitch

eyelet buttonhole

end bar tacker

12 × 3 mm max. 30 × 30 mm max.30 × 10 mm max.

Variable ( 21, 28, 35

stitches pre-set)

BROTHER INDUSTRIES, LTD.

LK3-B433E-3

MADE IN JAPAN

Ordinary materials

Denim

Knitted materials

LK3-B433E Mark II

Electronic lockstitch

decorative pattern

tacker

2,500rpm2,700rpm

Variable

Work clamp lifter Work clamp height Rotary hook Wiper device

Thread trimmer device

Thread take-up device

Data storage method Number of user

programs Number of cycle

programs

Number of stored data

Motor

Weights

Solenoid type

17 mm max.

Shuttle hook (shuttle hook 2, optional)

Standard equipment

(Option for -2 spec.)

Standard equipment

(Option for -2 spec.)

P-ROM (Any sewing pattern can be added using BAS-PC/300.)

33 sewing patterns

are set already

6 sewing patterns

are set already

3 sewing patterns

are set already

(Up to 100 patterns can be added. Total number of stitches of stored data

which can be added is within 10,000.)

Three-phase 400W induction motor

Machine head: 47kg, Operation panel: 0.6kg,

Control box: 9-19kg (depending on destination)

Power source

Single-phase 220-230V

3-phase 220, 380, 400, 415V

Maximum electric power consumption; 600VA

LK3-B430E-, B431E-, B432E-, B433E- Mark II

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2 . SPECIFICATIONS

2-2 . Program list

Sewing patterns are limited as shown in the table below. (Any program is available as long as the sewing pattern is within the work clamp and feed plate in size.) The sewing size is the length when the enlargement/reduction ratio is 100%.

[B430E Mark II]

Specifica-

tion

-1

-5

Use

For ordinary

materials

Program No.

Sewing pattern

No. of

stitches

Standard bar

tacking length

16mm

10mm

7mm

10mm

7mm

Standard bar

tacking width

2mm

-2

For denim

7mm

20mm

16mm

24mm

2mm

3mm

* The difference between -1 and -5 specifications for ordinary material is that the standard presser foot and

feed plate are different.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

24mm

3mm

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Program No.

Sewing pattern

No. of

stitches

Standard bar

tacking length

10mm

20mm

25mm

Standard bar

tacking width

0.3mm

2 . SPECIFICATIONS

Specifica-

tion

-7

Use

For knitted

materials

Program No.

Sewing pattern

No. of

stitches

Standard bar

tacking length

8mm

7mm

8mm

Standard bar

tacking width

2mm

* To prevent thread breakage due to heat, set the sewing speed to a maximum of 2,500 rpm for sewing

knitted materials.

* The sewing start and sewing end of the sewing patterns for program numbers 31 to 33 are in the middle of

the pattern.

* Use the presser foot and feed plate for straight bar tacking when using the

above programs.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

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2 . SPECIFICATIONS <Vertical bar tacking &

vertical straight bar tacking>

Vertical bar

tacking

Sewing patternProgram No.

No. of

stitches

Standard bar

tacking length

3mm

0.3mm

Standard bar tacking width

10mm

vertical

0.3mm

10mm

straight bar

tacking

0.3mm

10mm

* Use the presser foot and feed plate for straight bar tacking when using the above

programs.

If you want to sew a pattern other than standerd patterns, you can create your original pattern using the BASPC/300. Consult with your local Brother sales Office for details.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

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[B431E Mark II]

2 . SPECIFICATIONS

Program No.

[B432E Mark II]

Sewing pattern

No. of

stitches

Standard bar

tacking length

10mm

20mm

25mm

Standard bar

tacking width

0.3mm

Program No.

Sewing pattern

No. of

stitches

Standard bar

tacking length

6mm

Standard bar tacking width

2mm

[B433E Mark II] This model has no standard patterns. You can use the BAS-PC/300 pattern software (sold separately) to create the pattern, or consult your nearest BROTHER dealer.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

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3. INSTALLATION

CAUTION

Machine installation should only be carried out by a qualified technician.

Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done.

The sewing machine head weighs more than 47 kg. The installation should be carried out by two or more people.

Do not connect the power cord until installation is complete, otherwise the machine may operate if the foot switch is depressed by mistake, which could result in injury.

All cords should be secured at least 25 mm away from any moving parts. Furthermore, do not excessively bend the cable or secure it too firmly staples, otherwise there is the danger that fire or electric shocks could occur.

Be sure to connect the ground. If the ground connection is not secure, you run the risk of receiving a serious electric shock, and problems with correct operation may also occur.

Install the belt covers to the machine head and motor.

3-1 . Power table

• Use the power table which has been specially designed for each sewing machines.

* If using a commercially-available table, process

it as shown in the illustration below.

NOTE:

The thickness of the table should be at least 40 mm, and it should be strong enough to bear the weight and vibration of the sewing machine. If the distance A between the insides of the legs is less than 740 mm, move the control box installation position closer to the motor (B = 247 mm). Check that the control box is at least 10 mm away from the leg. If the control box and leg are touching, it could cause the sewing machine to operate incorrectly.

LK3-B430E Mark II LK3-B432E Mark II LK3-B433E Mark II

Motor

Table/ legs

assembly

Control Box

B430E-, B432E-, B433E

Model

Mark II

B431E Mark II

Operation panel cord hole

Model code 127-V30-00001 127-V31-00001

Counterbore depth 23

Section A-A

LK3-B430E-, B431E-, B432E-, B433E- Mark II

2-ø3 depth 5

Page 14

[B431E MarkII]

3. INSTALLATION

Control Box

Motor

Operation panel cord hole

Counterbore depth 23

Section A-A

LK3-B430E-, B431E-, B432E-, B433E- Mark II

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3. INSTALLATION

3-2 . Installing the motor

w e

Install the motor u to the work table with the four accessory bolts q, cushions w, cushion collars e, flat washers r, spring washers t and nuts y. At that time, fix by setting bolts q a little to the right of oval hole on motor.

NOTE:

Tighten the nuts y so that the clearance between the table and the cushion collars e is approximately 1 mm.

1mm

3-3 . Installing the motor pulley

r t

Table

Place the motor pulley q onto the shaft of the motor w so that the key groove is aligned, and then tighten

the set screw e so that the center of the V groove in the motor pulley q is aligned as closely as possible with the center of the belt hole in the power table.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

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3-4 . Installing the control box

LK3-B430E Mark II LK3-B432E Mark II LK3-B433E Mark II

3. INSTALLATION

[LK3-B431E Mark II]

t y

u i o

3mm

Table

Cushions

Cushion collars

Rubber collers

Flat washers

Nuts

t y

u i o

1. Remove the 12 screws q, and then open the covers (panel mounting assembly w and main P.C. board mounting plate e).

NOTE:

When opening the cover, hold it securely so that it does not fall down.

2. Install the control box with the four accessory bolts r, cushions t, cushion collars y, rubber collars u, flat washers i and nuts o as shown in the illustration above. At this time, leave a gap of approximately 3 mm between the work table and the top of the box. * Use two nuts o at each installation location, and make sure that both nuts are tightened.

3. Close the covers (panel mounting assembly w and main P.C. board mounting plate e), and tighten them with the screws q. * The main P.C. board mounting plate e will be opened again during “3-13. Connecting the cords”, so

provisionally tighten it with the screw q.

4. Install the power switch !0 with the two screws !1.

5. Secure the power switch cord with the three staples !2.

6. Pass the motor cord through the cord hole !3.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

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3. INSTALLATION

3-5. Installing the rubber cushions

3-6 . Installing the oil pan

Install the rubber cushions q with the nails w.

1. Insert the tabs of the oil pan w into the holes for the cushions q, and then secure it in place with the five nails e so that the oil pan w is not at an angle.

2. While pushing the oil pan w down from above, screw in the oil container r.

3-7 . Installing the cushions

Place the two cushions q into the holes in the work table so that the notches are aligned with the tabs in the oil pan, and secure them in place with the nails w.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

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3-8 . Installing the machine head

3. INSTALLATION

1. Insert the head hinges q into the machine head so that they are parallel, and then secure them with the two set screws w.

2. Place the machine head gently on top of the rubber cushions e and cushions r.

NOTE:

Pull the cords t out as shown in the illustration above in order to prevent them from being clamped by the machine head.

3. Install the hinge presser y with the two screws u.

3-9 . Installing the head rest

Tap the head rest q into the table hole.

NOTE:

Tap the head rest securely into the table hole.

3-10 .Installing the liquid cooling tank, optional

1. Remove the rubber plug, and then push the liquid

LK3-B430E-, B431E-, B432E-, B433E- Mark II

2. Tighten it with the set screw w.

cooling tank q.

Page 19

3. INSTALLATION

3-11 . Installing the operation panel

The operation panel can be installed to either the top or bottom of the work table.

Top of work table

1. Install the rear frame q to the work table (top or bottom) with the four wood screws w.

2. Install the front frame e to the rear frame q with the four screws r.

* The vertical orientation of the front frame e is the same whether it is installed to the top or the bottom of

the work table.

3. Insert the connector cord t into the control box through the hole at the side of the box. Refer to “3-13. Connecting the cords” for details on connecting the cord.

4. Secure the connector cord t with the staples (in three places).

Table

Bottom of work table

Table

3-12 . Connecting the ground wire

Be sure to connect the ground. If the ground connection is not secure, you run the risk of receiving a serious electric shock, and problems with correct operation may also occur.

Red White Black Yellow/Green

CAUTION

Connect to the power switch. However, the black wire is insulated to the inside of the box and is not used.

Connect to ground

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 20

3-13 . Connecting the cords

3. INSTALLATION

P11

Machine head connectors

Connection location on circuit board

Connection location X, Y, Sewing sensor Synchronizer Machine specification

select connector Thread take-up

solenoid* Presser solenoid

Thread trimmer solenoid Pulse motor, Y

Pulse motor, X Operation panel Upper shaft motor

No. of pins

12-pin

5-pin 8-pin

5-pin

4-pin

4-pin (blue)

4-pin

26-pin

3-pin

Cord mark

None None

P1 (ORG2) P2 (SYNCHRO)

P3 (SELECT)

P4 (SOL2)

P5 (SOL) P6 (YPM)

P7 (XPM) P8 (PANEL) P11 (UVW)

* Provided as an option for B430E Mark II-2 and B433E Mark II-2 specifications. In addition, the

B432E Mark II also has a movable solenoid connected.

1. Gently tilt back the machine head.

NOTE:

After tilting back the machine head, do not push the face side or the pulley side from above.

2. Pass the cords q through the hole w in the work table.

3. Gently return the machine head to its original position.

4. Remove the six screws e, and then open the control box cover (main P.C. board mounting plate r).

NOTE:

When opening the cover, hold it securely so that it does not fall down.

5. Loosen the two screws t,and then open the cord presser plate y in the direction of the white arrow and pass the cords q through the opening.

6. Loosen the screw o, and then attach the ground cord u for the machine head and the ground cord i for the operation panel as shown in the illustration.

7. Loosen the screw !1, and then attach the ground cord !0 for the upper shaft motor as shown in the illustration.

8. Securely connect connectors P1 to P8 and P11 as indicated in the table.

9. Secure the cords q with the cord clamps !2 and !3.

10. Close the cord presser plate y in the direction of the black arrow, and secure it by tightening the screws t.

NOTE:

Check that the cords do not get pulled when the machine head is tilted back gently.

11. Tighten the cover (main P.C. board mounting plate r) with the six screws e.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 21

3. INSTALLATION

3-14 . Installing the V-belt

Approx. 1mm

Approx. 9-10mm 10N

1. Gently tilt back the machine head, and then place the V-belt q into the V grooves on the machine head pulley w and the motor pulley e.

NOTE:

After tilting back the machine head, do not push the face plate side or the pulley side from above.

2. Gently return the machine head to its original position. * Be careful not to clamp the cords at this time.

3. Provisionally install the accessory tension pulley assembly r with the accessory flat washer, spring washer and bolt.

4. Adjust the belt tension by moving the tension pulley assembly to the right and left so that there is 9-

-10 mm of deflection in the V-belt q when it is gently pushed in the middle with a force of approximately 10 N. After adjusting, tighten the bolt A to secure the left pulley assembly.

5. Move the right tension pulley so that there is a gap of about 1 mm between it and the V-belt q, and then tighten the bolt B to secure the right pulley assembly.

NOTE:

Use brother specified V-belt (belt, VM). The V-belt q may stretch slightly when it is first used,

so adjust the belt tension after about 3,000 cycles of use. When above belt tension is week, this will be cause of following problems;

• Noise & vibration become large.

• Needle up stop position becomes unstable.

• Error message [E-50] is displayed.

Check that the motor is positioned so that the Vbelt is straight. (Fig.1)

Sewing machine

V-belt

Motor

Fig.1

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 22

3-15 . Installing the belt cover

3. INSTALLATION

1. Loosen the two screws w of the upper cover q and the two screws r of bed cover Le.

2. Insert the belt cover t in the direction of the arrow, and then secure it with the two screws w, the two screws r and the screw y. * When tilting back the machine head, loosen the screws w and r, remove the screw y and then remove

the belt cover t first.

3. Attach the rubber plug u to the belt cover.

3-16. Installing the foot switch

[A]

u i

!0 o

!4!9!5

[B]

1. Insert the connector of the foot switch e into the connector w of the control box q.

2. Install the foot switch e to the work table leg !2 with foot switch support plate A r, foot switch support plate C t, the bolt y, spring washer u, flat washer i, bolt o, spring washer !0 and flat washer !1 as shown in Figure A.

♦If foot switch support plate B !3 is used in a back-to-front position, it can be used as shown in Figure. B.

1. Remove the screw !4 and rubber plug !5. * Note that the spring !6 will come out when the screw !4 is removed.

2. Turn foot switch support plate B !3 back to front, and then install it with the bolt !7, spring washer !8 and flat washer !9 as shown in Figure. B.

NOTE:

If using the foot switch without installing it to the work table leg, move the foot switch at least 10 mm away from the leg. If the foot switch is not fully in contact with the work table leg when the foot switch is used, for example, if it is just hooked loosely onto the work table leg, it may cause the sewing machine to operate incorrectly. If using the optional two-pedal foot switch, change the setting of DIP switch A on the oreration panel while referring to "Setting the presser mode" on page 44.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 23

3. INSTALLATION

3-17 . Installing the motor cover

1. Install the motor cover q to the motor back cover w with the screws e and the flat washers r.

2. Pass the motor shaft through the notch in the motor back cover w, and then tighten the screws y and the washers u so that the clearance between the motor pulley t and the motor cover q is uniform.

3-18 . Installing the spool stand

Assemble the spool stand q while referring to the spool stand instruction manual, and then install the spool stand q at the right side of the work table.

3-19 . Installing the eye guard

Attach all safety devices before using the sewing machine. If the machine is used without these devices attached, injury may result.

LK3-B430E Mark II LK3-B432E Mark II LK3-B433E Mark II

[LK3-B431E Mark II]

CAUTION

Install the eye guard assy w to the face plate q with the two screws e.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 24

4 . LUBRICATION

4. LUBRICATION

CAUTION

Turn off the power switch before starting lubricating, otherwise the machine may operate if the foot switch is depressed by mistake, which could result in injury.

NOTE 1: Fill the machine with oil when the oil level is down to about one-third full in the oil sight glass.

If oil is not added and the oil drops below this level, there is the danger that the machine may seize during

NOTE 2: Be sure to let the machine operate for a while after adding the oil. NOTE 3: If th er e is no m or e oi l o n th e fe lt of t he shuttle race base, problems with sewing may result, so add oil to the felt

NOTE 4: Use only specified Brother oil (Nisseki Sewing Libe 10) for the machine oil.

4-1 . Lubrication points

operation.

until it is slightly soaked.

[LK3-B432E Mark II]

LK3-B430E Mark II LK3-B431E Mark II LK3-B433E Mark II

1. Fill the arm-side oil tank with oil. * When setting up the sewing machine and when

it hasn’t been used for an extended period of time, be sure to add 2-3 drops of oil at the place indicated by the arrow.

2. Fill the bed-side oil tamk with oil

3. Add oil to the felt q of the shuttle race base.

* When setting up the sewing machine and when it

hasn’t been used for an extended period of time, be sure to add 2-3 drops oil to the felt.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

4. If using the liquid cooling tank w, fill it with silicon oil (100 mm2/s).

Page 25

5 . OPERATION

5-1 . Name and function of each operation panel item

POWER

RESET

TEST

BOBBIN.WIND

B430E

PROGRAM NO.

X-SCALE

Y-SCALE

SPEED

COUNTER

SELECT

Series

P1 P2

P4P3

q POWER indicator .................. Illuminates when the power switch has been turned on.

w RESET switch ....................... Press this switch to reset the machine when an error occurs.

e TEST switch ......................... Use this switch when you want to operate only the feed mechanism in order

to check a pattern.

r TEST indicator ...................... Illuminates when the TEST switch has been pressed.

t BOBBIN. WIND switch ......... Press this switch to wind the lower thread.

y SELECT switch ..................... Use this switch to select a menu (program number, X and Y feed, speed and

counter). Each time the switch is pressed, one of the menu indicators (u to !1) illuminates, and the setting for that menu item appears in the display !4.

The illiminated indicator changes as follows each time the switch is pressed.

PROGRAM NO. indicator u →X-SCALE indicator i →Y-SCALE indicator o →SPEED indicator !0 →COUNTER indicator !1

u PROGRAM NO. indicator .....Illuminates when the SELECT switch y is pressed to shown the program

number setting.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 26

5 . OPERATION

POWER

RESET

TEST

BOBBIN.WIND

B430E

PROGRAM NO.

X-SCALE

Y-SCALE

SPEED

COUNTER

SELECT

Series

P1 P2

P4P3

i X-SCALE indicator................ Illuminates when the SELECT switch y is pressed to shown the X-scale set-

ting.

o Y-SCALE indicator................ Illuminates when the SELECT switch y is pressed to shown the Y-scale set-

ting.

!0 SPEED indicator ................... Illuminates when the SELECT switch y is pressed to shown the speed set-

ting.

!1 COUNTER indicator ............. Illuminates when the SELECT switch y is pressed to show the bobbin thread

or production counter setting.

!2 DISPLAY SET switches ........ Used to change the menu details which are displayed in the window !4.

!3 Us er p rog ram swi tch es ....... Used to set and select user programs.

!4 Display window .................... Thi s di spl ay window will indicate the current statu for the selected menu,

error or memory switch.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 27

5 . OPERATION

5-2 . Operating procedure

Preparation Turn on the power switch.

(The POWER indicator q will illuminate and the pro gram number will flash in the display window !4.)

Program No.

X-scale (%) Y-scale (%)

Speed (rpm)

Factory

default

0 *1

100 100

2,000

B430E MarkII

1– 33

Variable range

B431E MarkIIB432E MarkII B433E MarkII

1– 6 1– 3 100 – *2

20 – 200 20– 200

1,000– 2,700

1,000–2,500

*1 For checking the origin points for X and Y feed *2 Custom-made program

5-2-1 . Setting the program number Determine the appropriate program from the program list which is given on pp. 3 - 5.

Press the SELECT switch y

123

until the PROGRAM NO. indicator illuminates.

PROGRAM NO.

X-SCALE

Y-SCALE

SPEED

COUNTER

SELECT

Press the DISPLAY SET switches !2 until the desired program number is flashing in the display window.

Depress the foot switch to the second step.

* The display will stop flashing

and illuminates steadily, and the feed mechanism will move to the sewing start position.

1st step

2nd step

This completes the setting of the program number.

5-2-2 . Setting the X-scale and Y-scale

Press the SELECT switch y

123

until the X-scale or Y-scale indicator illuminates.

PROGRAM NO.

X-SCALE

Y-SCALE

SPEED

COUNTER

SELECT

Press the DISPLAY SET switches !2 until the desired scale setting is flashing in the display window.

(The setting is displayed as a percentage.)

Depress the foot switch to the second step.

* The display will stop flashing

and illuminates steadily, and the feed mechanism will move to the sewing start position.

1st step

2nd step

This completes the setting of the Xscale or Y-scale.

5-2-3 . Setting the sewing speed

Press the SELECT switch y

until the SPEED indicator illuminates.

Press the DISPLAY SET switches !2 until the desired speed setting is flashing in the display window.

PROGRAM NO.

X-SCALE

Y-SCALE

NOTE:

Be sure to check the sewing pattern (refer to page 22) after setting has been completed to make sure that the needle hole does not go out of the area circumscribed by the work clamp.

SPEED

COUNTER

SELECT

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 28

6. CHECKING THE SEWING PATTERN

■ When checking by operating only the feed mechanism

1. Turn on the power switch.

(The POWER indicator will illuminate and the program number will flash in the display window.)

2. Press the TEST switch.

(The TEST indicator will illuminate.)

TEST

3. Depress the foot switch to the second step. Only the feed mechanism will move.

[Check that the needle hole q does not protrude past the frame of the work clamp w.] * If you depress the foot switch again and keep it depresses after the feed mechanism has started to

move, the feeding speed will increase.

* If you would like to stop the feed while it is moving, press the TEST switch.

4. Press the TEST switch.

(The TEST indicator will switch off and the test mode will be cleared.)

5. Depress the foot switch.

The work clamp will rise and the preparation for sewing will be completed.

To ensure safety during use ......

You can prevent accidental changes being made to programs by setting DIP switches 7 and 8 to ON. When DIP switch 7 is ON

... The sewing pattern cannot be enlarged.

When DIP switch 8 is ON

... The program number cannot be changed.

1st step

2nd step

TEST

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 29

7. CORRECT USE

7-1 . Selecting the needle and thread

Different needles and threads are used for different sewing applications. Refer to the table at right for details on which needle and thread to select.

7-2 . Installing the needle

7-3 . Threading the upper thread

CAUTION

Needle

DP × 5 #9

DP × 5 #14

DP × 17NY #19

Thread

#100 - #60

#80 - #50 #50 - #20

Main application

Knitted materials

Ordinary materials

Denim

CAUTION

Turn off the power switch before installing the needle, otherwise the machine may operate of the foot switch is depressed by mistake and serious injury could result.

Loosen the set screw q, insert the needle w as far as it will go so that the groove is facing toward you (for the B431E Mark II, the groove is on the left side), and then tighten the set screw q.

Turn off the power switch before threading the thread, otherwise the machine may operate if the foot switch is depressed by mistake and serious injury could result.

Thread the upper thread correctly as shown in the illustration below. * If the tension release lever q is raised in the direction of the arrow, it will be easier to open the tension disc

w and pull the thread through.

[Two holes] Spun rayon yarn

Synthetic thread

[When using the liquid cooling tank]

[One hole]

Approx. 40mm

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 30

7-4 . Winding the lower thread

CAUTION

Do not touch or place anything against any of the moving parts while winding the lower thread, otherwise personal injury or damage to the machine may result.

1. Place the bobbin all the way onto the shaft.

2. Thread the thread as shown in the illustration at right, wind the thread around the bobbin several times in the direction of the arrow, and then press the bobbin presser q.

3. Turn on the power switch. (The POWER indicator on the operation panel will illuminate.)

7. CORRECT USE

4.Check that the needle is not touching the presser foot, and then while pressing the BOBBIN. WIND switch w, depress the foot switch e to start the machine. Keep depressing the foot switch e until the lower thread stops being wound onto the bobbin.

Release the BOBBIN. WIND switch w after the machine starts operating. If you release the foot switch before winding is completed, depress it once more while pressing and holding the BOBBIN. WIND switch w.

5. The bobbin presser q will automatically return to its original position after a set amount of thread (80 90% of the bobbin capacity ) has been wound on.

6. Release the foot switch e.

7. Remove the bobbin, hook the thread onto the knife r, and then pull the bobbin in the direction of the arrow to cut the thread.

BOBBIN.WIND

8. To wind more thread onto the bobbin, loosen the set screw t and pull the bobbin presser q outward.

<<If the thread winds onto the bobbin unevenly>> If the thread winds onto the bobbin unevenly, loosen the nut q and turn the bobbin winder thead tension stud w to adjust. * If the thread winds on as shown in A, turn the bob-

bin winder thread tension stud w clokwise; if it winds on as shown in B,turn the bobbin winder thead tension stud w counterclockwise.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Case A

Case B

Page 31

7. CORRECT USE

7-5. Replacing the bobbin case and threading the thread

CAUTION

Turn off the power switch before removing and replacing the bobbin case, otherwise the machine may operate if the foot switch is depressed by mistake and serious injury could result.

Pull the shuttle race cover q toward you to open it.

Insert a new bobbin into the bobbin case, and then pass the thread through the slot w and pull it out from the thread hole e. Check that the bobbin turns in the direction of the arrow when the thread is pulled at this time.

7-6 . Sewing conditions and thread tension

Ordinary materials

Use

Upper thread Lower thread

Upper thread tension

(N)

Lower thread tension

(N)

Thread take-up spring

height (mm)

Thread take-up spring

tension (N)

Standard

hook

#50 or

equivalent

#60 or

equivalent

0.6 - 0.9

0.2 - 0.3 6 - 8

0.15 - 0.35

Large hook

← ←

1.0 - 1.3

← ← ←

Standard

hook

#30 or

equivalent

#50 or

equivalent

1.2 - 1.6

0.2 - 0.3 6 - 8

0.4 - 0.6

Denim

Large hook

Pass the thread through the lever thread hole r, and then pull out approximately 30 mm of thread.

Knitted materials

Standard hook

← ←

1.4 - 1.8

← ← ←

#60 or equivalent #80 or equivalent

30mm

0.8 - 1.2

0.25 - 0.3 8 - 9

0.4 - 0.5

Pre-tension (N)

Needle

The sewing conditions given in the above table may need to be changed depending on the article being sewn.

0.1 - 0.3

DP × 5 #14

LK3-B430E-, B431E-, B432E-, B433E- Mark II

← ← ←

0.3 - 0.5

DP × 17NY #19

←

0.1 - 0.3

DP × 5#9

Page 32

7-6-1. Guide to maximum sewing speed <Standard hook>

Use

8 layers of denim

Max. sewing speed(rpm)

2,700

7. CORRECT USE

NOTE:

The thread may break due to heat under some sewing conditions. If this happens, reduce the sewing speed, or use the liquid cooling tank (option).

12 layers of denim

Ordinary materials

knitted materials 2,500

Use

Max. sewing speed(rpm)

8 layers of denim

Ordinary materials

7-6-2 . Lower thread tension

weaker stronger

2,300 2,700

2,500 2,500

Adjust the thread tension to the weakest possible tension by turning the thread tension nut q until the bobbin case will not drop by its own weight while the thread end coming out of the bobbin case is held.

7-6-3 . Upper thread tension

Turn the tension nut q(main tension) to adjust the tension as appropriate for the material being sewn.

Furthermore, turn the thread nut w(sub-tension) to adjust the remaining length of upper thread to 35 - 40 mm, when the thread take-up lever is not used.

Stronger

Weaker

Stronger

Weaker

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 33

7. CORRECT USE 7-6-4 . Thread take-up spring height 7-6-5. Thread take-up spring tension

Lower Higher

Loosen the set screw q and turn the tensioner body to adjust the thread take-up spring height.

7-6-6. Adjusting arm thread guide R

Become greater

Become less

Stronger

Weaker

Turn the tension stud q with a screwdriver.

The standard position of arm thread guide Rq is the position where the screw w is in the center of the adjustable range for arm thread guide Rq. To adjust the position, loosen the screw w and then move arm thread guide Rq. * When sewing thick material, move arm thread guide

Rq to the left. (The thread take-up amount will become greater.)

* When sewing thin material, move arm thread guide

Rq to the right. (The thread take-up amount will become less.)

7-6-7. Thread take-up amount

Become less

Become greater

Loosen the screw q and move the stopper (3.57 nut) w to adjust the operating angle of the thread take-up solenoid e. * To reduce the thread take-up amount, move the

stopper w upward.

* To increase the thread take-up amount, move the

stopper w downward.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 34

8. SEWING

CAUTION

Turn off the power switch at the following times, otherwise the machine may operate if the foot switch is depressed by mistake, which could result in injury.

• Threading

• When replacing the needle

• When not using the machine and when leaving the machine unattended. Do not touch any of the moving parts or press any objects against the machine while sewing, as

this may result in personal injury or damage to the machine.

Before starting sewing ......

• Check that the needle bar is at its highest position. Turn the machine pulley so that the index mark q on the pulley is between the marks w on the belt cover.

* If the machine pulley stop position is incorrect,

error "E-50" may be displayed, or the wiper may come into contact with the needle and break the tip of the needle.

8. SEWING

1. Turn on the power switch. (The POWER indicator will illuminate and the program number will flash in the display.)

2. Depress the foot switch to the 2nd step. The feed mechanism will move to the starting position and the work clamp q will rise. * Note that if the foot switch is pressed to the

2nd step while the display is illuminated, the machine will start operating.

3. Place the material to be sewn under the work clamp q, and then depress the foot switch.

When the foot switch is pressed to the 1st step, the work clamp q will lower. If you would like to shift the position of the material, release the foot switch. The work clamp q will then rise again. When the foot switch is pressed to the 2nd step, the machine will start operating.

1st Step 2nd Step

4. Once sewing is completed and the thread has been trimmed, the work clamp q will rise.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 35

9 . MAINTENANCE AND INSPECTION

CAUTION

Turn off the power switch before carrying out cleaning, otherwise the machine may operate if the foot switch is pressed by mistake, which could result in injury.

9-1 . Cleaning the rotary hook

1. Pull the shuttle race cover toward you to open it, and then remove the bobbin case.

2. Open the setting claw q in the direction indicated by the arrow, and then remove the shuttle race body w and the shuttle hook e.

3. Clean all the dust and thread ends from around the driver r, the top of the rotary hook thread guide and the shuttle race.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 36

9 . MAINTENANCE AND INSPECTION

9-2. Lubrication

NOTE1: Fill the machine with oil when the oil level is down to about one-third full in the oil sight glass.

NOTE2: Be sure to let the machine operate for a while after adding the oil. NOTE3: If th ere is no m or e oi l on th e fe lt of t he shuttle race base, problems with sewing may result, so add oil to the felt

NOTE4: Use only specified Brother oil (Nisseki Sewing Libe 10) for the machine oil.

LK3-B430E Mark II LK3-B431E Mark II LK3-B433E Mark II

If oil is not added and the oil drops below this level, there is the danger that the machine may seize during operation.

until it is slightly soaked.

1. Fill the arm-side oil tank with oil. * When setting up the sewing machine and when

it hasn’t been used for an extended period of time, be sure to add 2-3 drops of oil at the place indicated by the arrow.

[LK3-B432E Mark II]

2. Fill the bed-side oil tamk with oil.

3. Add oil to the felt q of the shuttle race base. * When setting up the sewing machine and when

it hasn’t been used for an extended period of time, be sure to add 2-3 drops oil to the felt.

4. If using the liquid cooling tank w, fill it with silicon oil (100 mm2/s).

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 37

9 . MAINTENANCE AND INSPECTION

9-3 . Draining the oil

9-4 . Cleaning the control box air inlet port

1. Remove and empty the waste oil container q whenever it is full.

2. After emptying the waste oil container q, screw it back into its original position.

Use a vacuum cleaner to clean the filter in the air inlet port w of the control box q at least once a month.

9-5 . Cleaning the eye guard

9-6 . Checking the needle

* If the machine is used while the air inlet port is

blocked, the inside of the control box will overheat. When this happens, the overheating error code (“Ed0”) will be displayed and you will not be able to operate the sewing machine.

Wipe the eye guard clean with a soft cloth.

NOTE:

Do not use solvents such as kerosene or thinner to clean the eye guard.

Always check that the tip of the needle is not broken and also the needle is not bent before starting sewing.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 38

10 . STANDARD ADJUSTMENTS

CAUTION

10 . STANDARD ADJUSTMENTS

Maintenance and inspection of the sewing machine should only be carried out by a qualified technician.

Ask your Brother dealer or a qualified electrician to carry out any maintenance and inspection of the electrical system.

Turn off the power switch and disconnect the power cord from the wall outlet at the following times, otherwise the machine may operate if the foot switch is depressed by mistake, which could result in injury.

· When carring out inspection, adjustment and maintenance

· When replacing consumable parts such as the rotary hook and knife

10-1 . Adjusting the needle bar height

If the power switch needs to be left on when carrying out some adjustment, be extremely careful to observe all safety precautions.

If any safety devices have been removed, be absolutely sure to re-install them to their original positions and check that they operate correctly before using the machine.

(DP × 5)

Turn the machine pulley to move the needle bar to the lowest position. Then remove the rubber plug w, loosen the set screw e and then move the needle bar up or down to adjust so that the second reference line from the bottom of the needle (reference line A) is aligned with the lower edge of the needle bar bush q. * If using a DP × 5 needle, use the highest reference line (reference line a).

DP × 17

10-2 . Adjusting the needle bar lift amount

(DP × 5) DP × 17

Adjust the needle bar lift amount as described below so that the tip of the rotary hook is aligned with the center of the needle when the machine pulley is turned to raise the needle bar from its lowest position until the lowest reference line on the needle (reference line B) is aligned with the lower edge of the needle bar bush q. * If using a DP × 5 needle, use the second reference line from the top of the needle (reference line b ).

1. Open the support w in the direction of the arrow, and remove the felt support e.

2. Loosen the screw r , and move the driver to adjust so that the tip of the rotary hook is aligned with the needle center line. * When returning the felt support e, place it as shown in the illustration so as not to clamp the felt t, and

then gently press the felt t and the wick y until they are at the same height as the rotary hook race.

* Return the support w to its original position.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 39

10 . STANDARD ADJUSTMENTS

10-3 . Adjusting the driver needle guard

Needle center line

Tip

Turn the machine pulley to align the tip of the rotary hook with the needle center line. Then loosen the set screw w and turn the eccentric shaft e to adjust so that the driver needle guard q contacts the needle. If the needle contact pressure is too great, skipped stitches may occur. On the other hand, if the driver needle guard qis not touching the needle, the tip of the inner rotary hook will obstruct the needle, resulting in an excessively high amount of friction.

10-4 . Adjusting the needle clearance

0.01 - 0.08mm

Turn the machine pulley to align the tip of the rotary hook with the needle center line. Then loosen the set screw q and turn the eccentric shaft w to adjust so that the clearance between the needle and the rotary hook is 0.01 - 0.08 mm.

10-5 . Adjusting the shuttle race thread guide

Install the shuttle race thread guide q by pushing it in the direction of the arrow so that the needle groove is aligned with the center of the needle plate hole.

NOTE:

If the shuttle race thread guide is in the wrong position, thread breakages, soiled thread or catching of the thread may occur.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 40

10 . STANDARD ADJUSTMENTS

10-6.Adjusting the thread take-up amount

At the time of shipment from the factory, the thread take-up amount (stroke) of the thread take-up lever q is adjusted as shown in the table below. You may need to adjust this setting depending on the sewing conditions to prevent the thread from pulling out at the sewing start.

Thread take-up amount (stroke)

Become less

Become greater

spec.

Thread takeup amount

B430E MarkII

-1,-5 0mm

B431E MarkIIB432E MarkIIB433E MarkII

-2,-3 –-7

0mm 5mm 5mm5mm

-1

-7

0mm

Loosen the screw w and move the stopper (3.57 nut) e to adjust the operating angle of the thread take-up solenoid r. * To reduce the thread take-up amount, move the stopper e upward. * To increase the thread take-up amount, move the stopper e downward.

NOTE:

Do not increase the stroke of the thread take-up lever any more than is necessary. If the sub-thread tension is too high, the needle thread length may become too short and the thread may come out of the needle. Furthermore, if the sub-thread tension is too weak, the needle thread length may become too long and the underside of the article being sewn may become untidy.

10-7 . Adjusting the movable knife

Loosen the nut w and move the connecting rod lever e to the left or right to adjust so that the V section A is aligned with the index bark B on the needle plate when the sewing machine in the stopped position and the movable knife q is moved toward the index mark.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 41

10 . STANDARD ADJUSTMENTS 10-7-1 . Replacing the movable knife and fixed knife

1. Open the large shuttle hook cover, remove the screws q and w, and then remove the feed plate e.

2. Remove the two screws r and the two screws t, and then remove the needle plate y.

3. Remove the thread trimmer connecting rod u from the connecting rod lever pin i.

0.5mm

4. Remove the movable knife o and replace it with a new one. At this time, check that the movable knife o and the fixed knife !0 cut the thread cleanly. If necessary, adjust by using the appropriate movable knife washer !1 (supplied as accessories). * Apply grease to the outside of the collar !2 at this time.

5. Install the fixed knife !0 at a distance of 0.5 mm from the needle hole plate !3.

6. Place the thread trimming connecting rod uonto the connecting rod lever pin i, and then install to the needle plate y.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 42

10-7-2. Adjusting the engagement of the movable knife and fixed knife

10 . STANDARD ADJUSTMENTS

Fig. 1

Cutting edge

Movable knife

Fix knife

Cutting edge

A. After the movable knife and fixed knife are properly engaged, tighten the screw as shown in Fig.1. B. Turn the movable knife (in the direction of the arrow) while the screw is still tightened. C. Loosen the screw. D. Turn the movable knife (in the direction of the arrow) while the screw is still loosened. Repeat above steps A, B, C and D four or five times to maintain the cutting performance of the knife.

10-8 . Adjusting the work clamp lift amount

[B430E-, B431E-, B433E MarkII] The maximum work clamp lift amount is 17 mm from the top of the needle plate. The lift amount for each model is adjusted as shown in the table at the time of shipment.

e w

17mm

B431E Mark IIB430E Mark II B433E Mark II

spec.

Lift amount

-1,-5

10 mm-214

mm-79

-2,-3

-1

10 mm-214

mm-79

1. To adjust the work clamp lift amount, loosen the bolt q and move the presser arm lever plate w up or down.

2. Apply grease to the bottom of the presser plate e to the top of the presser arm lever plate w and to the sliding part of the work clamp (grease is already applied at the time of shipment), and check that the movement becomes easier.

3. Check that there is a gap between the presser arm lever plate w and the presser plate e when the presser foot is lowered. * If movement is sluggish when the work clamp is being raised and lowered, it may not be possible to

increase the work clamp lift amount.

* If the work clamp cannot be raised or lowered, error code “E-61” or “E-63” will be displayed.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 43

10 . STANDARD ADJUSTMENTS [B432E Mark II]

The maximum work clamp lift amount is 17 mm from the top of the needle plate when the machine is stopped. The lift amount is adjusted 13

mm at the time of shipment.

17mm

While the machine is stopped, loosen the bolt q and move the presser roller attachment plate w vertically to adjust the lift amount. * When making this adjustment, check to see if the work clamp will open. Also, readjust the closing distance

of the work clamp according to the second procedure of “10-10. Work clamp closing-distance adjustment”.

* Loosen the nut t and turn the stop lever adjusting screw y to adjust the position of the stop lever e so that it does

not touch the adjusting ring r when the presser foot is raised.

* If the work clamp cannot be raised or lowered, error code “E-61” or “E-63” will be displayed.

10-9.Work clamp pressure adjustment(B432E Mark II)

Loosen the lower adjusting ring q as much as possible (to the extent that the material being sewn does not slip and alter the pattern). Then, adjust the pressure by turning the upper adjusting ring w.

* Removal of the work clamp spring

Lower the work clamp, then place the adjusting ring

e in the hole of the frame, remove the tip of the

adjusting screw from the lever holder r, and remove the work clamp spring t.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 44

10-10. Work clamp closing-distance adjustment (B432E Mark II)

10 . STANDARD ADJUSTMENTS

0.3 - 0.5mm

1. With the presser closing lever q pushed all the way by hand in the direction of the arrow in the illustration, loosen the nut w and move the presser closing roller e so that the gap is 0.3 - 0.5 mm when the work clamp is closed while the sewing machine is in operation.

* As the presser closing roller e is brought closer to the presser closing lever q, the gap of the work clamp

is narrowed. Note, however that if the presser closing roller e is moved closer than necessary, the operation of the presser closing lever q may be impaired.

u y

8 - 9mm

3 - 4mm

2. By loosening the nut y and turning the stop lever adjusting screw u, adjust the stop lever r so that it separates from the stop position adjusting plate t when the work clamp is elevated 8 - 9 mm above the surface of the needle plate.

3. Loosen the nut i and move the work clamp so that the closing distance becomes 3 - 4 mm when the work clamp is in the lowered position. Then, push the nut i all the way in the direction indicated by the arrow, and tighten it.

10-11. Work clamp interchangeability (B433E Mark II)

The B430E Mark II work clamp can also be used with

the B433E Mark II. Remove the screw q, washer w and cover support stand e, and then change the installation position for the presser arm assembly r from the standard installation position A to installation position B.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 45

10 . STANDARD ADJUSTMENTS

10-12. Adjusting the needle up stop position

t u

10-13. Adjusting the thread wiper

The needle up stop position is adjusted so that the index mark w on the machine pulley q is inside the mark r on the belt cover e. If adjustment is necessary, loosen the screw t at the "U" mark of the machine pulley q and adjust the position of the machine pulley q. The machine pulley q stops later if it is turned clockwise, and it stops earlier if it is turned counterclockwise.

NOTE:

The screw y at the "D" mark is an adjusting screw for the needle down detection function and is adjusted to match the feed timing, so it should not be loosened. The screw u is a screw for detecting the machine stop position, and should not be loosened.

* If the index mark w is not inside the mark r when

the sewing machine is started, error code "E-50" will be displayed. Turn the machine pulley to move the index mark w to the correct position and then start the sewing machine.

2±0.5mm

Approx. 20mm

1. Loosen the set screw w and move the wiper arm support e up or down to adjust so that the clearance between the top of the thread wiper and the needle point q is 2 ± 0.5 mm when the thread wiper is aligned with the center of the needle.

* Before carrying out this adjustment, check that the needle bar is lowered 5 to 5.5 mm from the needle up

stop position when the sewing machine stops.

2. Loosen the screw r and move the thread guide connecting plate t up or down so that the thread wiper is approximately 20 mm from the needle when it is at the standby position.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 46

10-14. Checking the input sensor and DIP switch input

10 . STANDARD ADJUSTMENTS

POWER

RESET

TEST

BOBBIN.WIND

B430E

PROGRAM NO.

X-SCALE

Y-SCALE

SPEED

COUNTER

SELECT

Series

P1 P2

P4P3

1. When the X-SCALE indicator q is illuminated and the RESET switch e is pressed while the TEST switch w is being pressed, the state of the X home position signal will appear on the display window r.

· When sensor is ON · When sensor is OFF

2. Each time the SELECT switch t is pressed, a different indicator will illuminate and the operating condition for the corresponding item will appear on the display window r.

· When X-SCALE indicator is illuminated......X home position sensor (ON when home position detected)

· When Y-SCALE indicator is illuminated......Y home position sensor (ON when home position detected)

· When SPEED indicator is illuminated .........Synchronizer ( * 1)

· When COUNTER indicator is illuminated ...Presser sensor (ON when presser is lowered)

When PROGRAM NO. indicator is illuminated...

Work clamp closed sensor (ON when work clamp is open [B432E Mark II only])

*1 The synchronizer display simultaneously displays the needle up signal (3rd digit), the 24-section signal

(2nd digit) and the needle down signal (1st digit).

[ H L L] “H” when the sensor is on, and “L” when the sensor is off

Needle down signal 24-section signal Needle up signal

If the DIP switches at the side of the operation panel are changed at this time, the number of the DIP switch which was changed will be displayed in the 4th digit position of the display window r for about one second.

NOTE:

The DIP switch can be changed at this time without turning off the power so that you can check the DIP switch input. However, you should normally always turn off the power when changing DIP switch settings.

3. Press the TEST switch w again to return the display to the normal condition.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

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10 . STANDARD ADJUSTMENTS

10-15. Checking the input voltage

Specifications

200V 220V

B430E

POWER

RESET

TEST

BOBBIN.WIND

PROGRAM NO.

X-SCALE

Y-SCALE

SPEED

COUNTER

SELECT

Series

P1 P2

P4P3

Display

Notes [090 - 110] [100 - 120]

“100” is displayed when the input voltage is 200 V.

230V

100V 380V 400V 415V

[105 - 125]

[100 - 120]

“110” is displayed when the input voltage is 100V (for 100-V spece.), 380V (for 380-V spece.), 400V (for 400-V spece.)or 415V (for 415-V spece.).

1. Turn on the power switch.

2. Press the SELECT switch q until the Y-SCALE indicator w illuminates.

3. While pressing the TEST switch e, press the RESET switch r.

4. If the input voltage is normal, the input voltage conditions will be shown in the display window t as indicated in the table above.

5. Press the TEST switch e again to return the display to the normal condition.

10-16. Clearing all memory settings

If the sewing machine stops operating normally, the cause may be that an incorrect memory setting may have been made by means of the memory switch, for instance. In such cases, carry out the following procedure to clear the memory, and also check the DIP switch settings. [ Method ] While pressing the RESET switch, turn on the power. This will clear all of the memory setting.

NOTE

• This operation causes all settings stored in memory such as memory switch and user program settings to be cleared.

• If the optional emergency stop switch has been installed, you should reset memory switch No. 10 to ON.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 48

10 . STANDARD ADJUSTMENTS

10-17 . Moving stitch patterns

· Programs which have already been programmed can be moved up, down and to the left and right. (How-

ever, such patterns will be reset if the power supply is turned off or the program number is changed.)

· The feed position can be set to the any position desired.

B430E

Series

PROGRAM NO.

POWER

RESET

TEST

BOBBIN.WIND

X-SCALE

Y-SCALE

SPEED

COUNTER

SELECT

P1 P2

P4P3

1. Select the program number, and then press the start switch once to move the feed mechanism to the sewing start position.

2. Press the SELECT switch q until the PROGRAM NO. indicator w illuminates.

3. While pressing the TEST switch e, press the RESET switch r. * The TEST indicator t will illuminate and < > will appear in the display window y.

4. Press the SELECT switch q so that either the X-SCALE indicator u or Y-SCALE indicator i illuminates.

5. Press the DISPLAY SET switches o to move the feed mechanism one pulse at a time.

• If the DISPLAY SET ( ) switch is pressed while the X-SCALE indicator is illuminated, the feed mecha-

nism will move to the left.

• If the DISPLAY SET ( ) switch is pressed while the X-SCALE indicator is illuminated, the feed mecha-

nism will move to the right.

• If the DISPLAY SET ( ) switch is pressed while the Y-SCALE indicator is illuminated, the feed mecha-

nism will move down.

• If the DISPLAY SET ( ) switch is pressed while the Y-SCALE indicator is illuminated, the feed mecha-

nism will move up.

6. When the TEST switch e is pressed after the above fine adjustments have been made, the TEST indicator t and display window y will both switch off and movement of the stitch pattern will be completed.

NOTE:

When moving the stitch pattern, take the whole of the pattern area into consideration so that no parts extend outside the sewing area when the pattern is sewn.

* If you would like to set the feed position to a desired position, carry out steps 2. to 6. above while the display window

y is flashing. The stitch pattern will not be moved at this time.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 49

11 . USING THE COUNTERS

11. USING THE COUNTERS

11-1 . Using the bobbin thread counter

If you use the bobbin thread counter to set the number of articles which can be sewn with the amount of bobbin thread available, you can stop the bobbin thread running out in the middle of sewing a pattern.

1. Press the SELECT switch q until the COUNTER indicator w illuminates.

2. While pressing the TEST switch e, press the RESET switch r.

B430E

POWER

RESET

TEST

BOBBIN.WIND

SELECT

Series

PROGRAM NO.

X-SCALE

Y-SCALE

SPEED

COUNTER

P1 P2

P4P3

5. Each time the sewing of a single article is completed, the number being displayed in the display window y will become smaller. When the number of articles set by the bobbin thread counter have all been sewn, “0000” will be displayed in the display window y, and an alarm will start sounding continuously. * The sewing machine will not operate during this time, even if the foot switch is depressed.

6. Replace the bobbin, and then press the RESET switch r. * The alarm will then stop sounding, and the number which was set in step 3. above will be re-displayed in

the display window y.

* The COUNTER indicator w will flash and the

counter will switch to bobbin thread counter setting mode.

3. Press the DISPLAY SET switches t to set the number of articles to be sewn.

• The bobbin thread counter can be set to sew a

number of articles from one (“0001”) through to 9999 (“9999”).

If the bobbin thread counter is set to “0000”, sewing is carried out without the number of articles sewn being counted.

• If you press the RESET switch r while setting the bobbin thread counter, the setting will return to “0000”.

4. Press the TEST switch e. * The number displayed in the display window y

will then be stored as the bobbin thread counter setting.

11-2 .Using the production counter

The production counter can be displayed in the display window y separately from the bobbin thread counter.

1. Press the SELECT switch q until the SPEED indicator w illuminates.

2. While pressing the TEST switch e , press the RESET switch r .

B430E

POWER

RESET

TEST

BOBBIN.WIND

SELECT

Series

PROGRAM NO.

X-SCALE

Y-SCALE

SPEED

COUNTER

P1 P2

P4P3

* The COUNTER indicator t and the SPEED indi-

cator w will illuminate, and the production counter will be displayed in the display window y.

• Press the RESET switch r to reset the produc-

tion counter to “0000”.

• You can also press the DISPLAY SET switches

u to set the production counter to the desired value.

3. When the foot switch is depressed, the sewing machine will start sewing.

4. If you press the TEST switch e or the SELECT switch q, the display will return to showing the bobbin thread counter.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

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12 . CHANGING FUNCTIONS USING THE DIP SWITCHES

12. CHANGING FUNCTIONS USING THE DIP SWITCHES

12-1. Operation panel DIP switches

The operation panel DIP switches q are used to change functions which might need to be changed depending on the sewing conditions.

NOTE:

Always turn off the power before setting the DIP switches.

The functions shown in the table below can be changed by means of these DIP switches. * All DIP switches are set to OFF at the time of ship-

ment.

Switch DIPA-1 DIPA-2

DIPA-3 DIPA-4 DIPA-5

DIPA-6

DIPA-7 DIPA-8

Presser does not automatically lift after sewing is completed.

Two-pedal mode is available. User program mode is available.

–

The presser does not rise automatically when a split is found. Displays the enlargement/reduction ratio in millimeter units instead of as a

percentage. (After changing this setting, be sure to carry out the auto-clear operation by referring to page 41.)

Enlargement of pattern size is not available. Program number is fixed.

Motion when set to ON

See “12-2. Setting the presser mode”

12-2. Setting the presser mode

Through the combination of DIP switches A-1 and A-2 on the operation panel, presser motions can be set as follows:

DIPA-1

−

DIPA-2

−

Pedal specifications

Single pedal Single pedal

Raising the presser at the sewing end Presser is raised automatically. Presser is raised by pressing the pedal.

−

Two pedals

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Presser is raised automatically, then it is lowered by pressing the pedal.

Presser is kept lifted while the pedal is pressed.

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12 . CHANGING FUNCTIONS USING THE DIP SWITCHES

12-3 . DIP switches inside the control box

DANGER

The DIP switches q inside the control box are used to change functions which do not often need to be changed once they have been set.

The functions can be changed as shown in the table below by changing the positions of the DIP switches q. * All DIP switches are set to OFF at the time of ship-

ment.

NOTE:

When opening the cover, hold it securely so that it does not fall down.

Switch DIPB-1 DIPB-2 DIPB-3 DIPB-4 DIPB-5 DIPB-6

DIPB-7

DIPB-8

*NOTE:

When the motor operates in reverse to raise the needle, the thread take-up will stop at a position which is lower than its normal stopping position. As a result, the thread take-up will rise slightly at the sewing start, and this may result in the thread pulling out under certain coditions.

First two stitches are sewn at a low speed of 260 rpm. Last two stitches are sewn at a low speed of 260 rpm.

–

Last two stitches are sewn at a low speed of 700 rpm. First two stitches are sewn at a low speed of 400 rpm. Low speed sewing is not performed at the start of sewing.

The motor operates in reverse when the upper shaft stops, to return the needle bar to close to its highest position.

Area checking of the sewing data is not carried out.

Motion when set to ON

*NOTE

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12 . CHANGING FUNCTIONS USING THE DIP SWITCHES

12-4. Using user programs

User program ... It can store sixteen different programs which can include details such as the program number, X scale, Y scale and sewing speed. If you are sewing certain patterns over and aver again, it is useful to record the settings for these patterns into a user program.

Recording a user program

1. Turn off the power switch and then set DIP switch A-3 of the DIP switches q to ON.

2. Turn on the power switch. While pressing the TEST switch w, press the SELECT switch e.

* All of the menu indicators (r to i) will illuminate and the

mode will switch to recording mode.

* In addition, “PP 1” will appear in the display window o to

indicate that user program No.1 is being recorded. (Once recording of No.1 is completed, No.2 will be displayed; once No.2 is completed, No.3 will be displayed. Thus the next unrecorded program letter is always displayed.)

POWER

RESET

TEST

BOBBIN.WIND

B430E

SELECT

Series

PROGRAM NO.

X-SCALE

Y-SCALE

SPEED

COUNTER

P1 P2

P4P3

3. Press the SELECT switch e .

* The PROGRAM NO. indicator r will illuminate.

4. Press the DISPLAY SET switches !0 to select the number for the program that you would like to record.

5. Press the SELECT switch e. * The X-SCALE indicator t will illuminate.

6. Press the DISPLAY SET swithes !0 to select the X scale setting that you would like to record.

7. Press the SELECT switch e. * The Y-SCALE indicator y will illuminate.

8. Press the DISPLAY SET switches !0 to select the Y scale setting that you would like to record.

9. Press the SELECT switch e. * The SPEED indicator u will illuminate.

10. Press the DISPLAY SET switches !0 to select the speed setting that you would like to record.

11. Press the SELECT switch e. * This completes the recording of user program No.1.

* “PP 2” will then appear in the display window o, to indicate that user program No.2 is now being recorded.

Repeat steps 3. through to 11. to record further programs as desired.

12. Press the TEST switch w. This completes the recording.

* The menu indicators ( e to i ) will all illuminate and “p1” will appear in the display to indicate that user program No.1 is currently

selected.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 53

12 . CHANGING FUNCTIONS USING THE DIP SWITCHES Using a user program

1. Press the DISPLAY SET switches !0 to select the speed program number for the user program that you would like to use.

*The user program numbers P1 to P4 can also be selected using the user program switches !1.

2. Depress the foot switch to the second step.

3. Check the sewing pattern (see P.22), and then sew the pattern selected.

Clearing the user programs

1. Switch the machine to recording mode by the procedure in steps 2. of recording a user program.

2. Use the DISPLAY SET switches !0 to specify the user program number which is to be cleared of data.

3. Press the RESET switch !2 . * The buzzer will sound and the user program with the number selected will be cleared. * If you press and hold the RESET switch !2 until after the buzzer has sounded twice, all user programs

will be cleared.

NOTE:

If data has been recorded in user programs P1, P2, P3 and P4 and you then clear the data in user program P2, the contents of P3 will be transferred to P2, and the contents of P4 will be transferred to P3.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 54

13. CHANGING SPECIAL FUNCTIONS USING THE MEMORY SWITCHES

13.

CHANGING SPECIAL FUNCTIONS USING THE MEMORY SWITCHES

The functions of the switches on the operation panel q can be changed to carry out special functions.

NOTE:

After changing the memory switch settings, press the power switch to turn the power off and then back on again. The memory switches “00 - 2F” are set to OFF at the time of shipment.

1. Turn on the power switch.

2. While pressing the TEST switch w, press the BOBBIN. WIND switch e. * “00 - - ” will appear in the display window r.

B430E

Series

3. Press the DISPLAY SET switches t to set the two digits at the left of the display window r to the corresponding number (00 to 4F) of the function shown in the table below that you would like to select.

4. When the BOBBIN. WIND switch e is pressed, the two spaces at the right in the display window will change from “ - - ” to “ON”.

POWER

RESET

TEST

PROGRAM NO.

X-SCALE

Y-SCALE

SPEED

COUNTER

P1 P2

P4P3

* If you press the RESET switch y at this time,

memory switches from 00 to 2F will all be set to OFF (“--”), and memory switches from 30 to 4F will be returned to their initial settings.

BOBBIN.WIND

SELECT

5. Press the TEST switch w . * The display will return to normal.

■Memory switches 00 - 0F

Switch

memo-00

At the end of sewing, the feed plate will be returned to the sewing start point via mechanical home position.

Motion when set to ON

Work clamp will move to the sewing start point, and then will be lifted.

memo-01

(The work clamp rises at the final stitch to enable the quick taking out of the workpieces.)

memo-02

memo-03

memo-04

memo-05 memo-06

memo-07 memo-08

memo-09

memo-0A

memo-0b memo-0c

memo-0d

Feed will move automatically to the next starting point at the same time as a user program is switched. (Normally it moves to the starting point after sewing starts.)

When sewing using programs, the programs which have been set will be sewn in numerical order. (Cycle sewing mode is set.)

The sewing speed will be fixed at the minimum speed for the maximum pitch of the sewing data.(Set this to ON if you are concerned that vartations in pitch may cause changes in the sewing speed.)

Increases the presser solenoid lifting force (Set to ON when using the optional spring for extra-heavy material)

Enlargement and reduction ratio settings for X and Y become the same.

–

Test feeding is carried out stitch by stitch when the foot switch is depressed. The sewing start point becomes the reference point for enlargements and

reductions.(The reference point for enlargements and reductions is normally the center of the sewing frame.)

Work clamp does not close. Work clamp closes when it is lower.

Needle stops in up position during emergency stop. (EMERGENCY STOP switch is available as an option.)

The bar tacking stitches (with a pitch of less than 1 mm) are also enlarged and reduced. (Normally stitches with a pitch of less than 1 mm are not enlarged or reduced.)

memo-0E

memo-0F

*B432E Mark II only.

Test feeding will be performed at the same speed as that for actual sewing. (This is used for checking feeding operation.)

After sewing is finished, the work clamp automatically opens and closes once (practice operation).

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Page 55

13. CHANGING SPECIAL FUNCTIONS USING THE MEMORY SWITCHES

■ Memory switches 10 - 1F

Switch

memo-10 The optional emergency stop switch can be used.

memo-11 - memo-13

memo-14 memo-15 memo-16 memo-17 memo-18 memo-19 memo-1A

memo-1b

memo-1c —

memo-1d —

memo-1E

memo-1F

— Solenoid wiper can be used (available as an option). — Needle cooler output is enabled. (Needle cooler is available by special order.) Thread take-up device is not operated at the sewing end. Thread take-up device operates one stitch before the sewing end. Presser position errors are not detected. Needle up stop position errors are not detected.

Presser can be moved up and down before the home position is detected. (Normally the presser cannot be moved up and down until after the home position has been detected.)

Errors can be reset using the EMERGENCY STOP switch. (EMERGENCY STOP switch is available as an option.)

Thread is not trimmed when an emergency stop occurs during sewing. (EMERGENCY STOP switch is available as an option.)

Motion when set to ON

■ Memory switches 20 - 2F

Switch memo-20 memo-21

memo-22

memo-23

memo-24 - memo-2F —

Machine head from previous B430E series is used. (Only the operation panel and box are Mark II.)

Rotating-type thread breakage detector operates. (Device is available by special order.) During thread breakage detection, sensitivity is decreased from 8 to 14 stitches at the

sewing start. (Sensitivity during sewing is three stitches.) When DIP switch A-8 is simultaneously ON, setting values changed using the operation

panel are ignored.

Motion when set to ON

■ Memory switches 30 - 4F 30 to 4F are set by entering two-digit values. These values are incremented using the P2 switch, and decremented using the P4 switch.

Switch

memo-30

memo-31

memo-32

memo-33

memo-34 memo-35

memo-36 memo-37

memo-38

memo-39

memo-3A

memo-3b

memo-3c memo-3d memo-3E memo-3F memo-40

memo-4F

Possible setting range

0 - 30

/zx :

12 - 27

c :12 - 25 × 100rpm 25

1 - 10

0 - 5 3 - 9

—

1 - 20

1 - 20 1 - 20

1 - 20

— — — —

—

Units

× 100rpm

× 7.5°

Needle

× 100rpm

—

× 7.5°

× 7.5° × 7.5°

× 7.5°

— — — —

—

Initial value

/zc:30

x :12

/z :10

x:3,c:30

0 4

—

10 10

— — — —

—

Limits the maximum area in the horizontal direction (X)

Limits the maximum area in the vertical direction (Y)

Changes the maximum sewing speed. Changes the feed timing

1 (Fast) ←5 (Standard) →10 (Slow) The sewing speed at the sewing start is 400 rpm for the

specified number of stiches. Changes the sewing start speed specified by memo-34.

—

Changes the feed timing one stitch before the sewing end. 1 (Fast) ←10 (Standard)→20 (Slow)

Changes the feed timing two stitches before the sewing end. 

Changes the feed timing for the third stitch at the sewing start. 1 (Fast) ←10 (Standard) →20 (Slow)

Changes the feed timing for the second stitch at the sewing start. Changes the feed timing for the first stitch at the sewing start.

— — — —

—

Explanation

NOTE:/...B430E Mark II, z...B431E Mark II, x...B432E Mark II, c...B433E Mark II

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 56

13. CHANGING SPECIAL FUNCTIONS USING THE MEMORY SWITCHES

13-1. Using the cycle sewing function

What is the cycle sewing function?

The cycle sewing function lets you program up to four patterns for cycle sewing of patterns in a predeter

mined order.

Recording a cycle sewing program

1. Set DIP switch q-3 to ON, and then record the patterns which you would like to use for cycle sewing. (Refer to “12-4. Using user programs”.)

* Cycle sewing cannot be performed using patterns (P1 to P16)

which have not had a user program assigned.

2. Set the memo-03 switch to ON. (Refer to page 48 for how to do this.)

3. While pressing the TEST switch w, press the SELECT switch e.

* All of the menu indicators (r to i) will illuminate and the

mode will switch to recording mode.

4. Press the P1 switch o.

•“Pc 1” will appear in the display window !0 to indicate that cycle sewing program No. 1 is being recorded.

* Programs P2, P3 and P4 switches can also be used for pro-

gramming.

POWER

RESET

TEST

BOBBIN.WIND

B430E

SELECT

Series

PROGRAM NO.

X-SCALE

Y-SCALE

SPEED

COUNTER

P1 P2

5. Press the SELECT switch e. *The PROGRAM No. indicator r will illuminate and “1- -” will appear in the display window !0.

6. Press the DISPLAY SET switches !1 to select the number for the user program that you would like to record.

7. Press the SELECT switch e. *“2- -” will appear in the display window !0.

8. Press the DISPLAY SET switches !1 to select the number for the user program that you would like to record.

9. Repeat steps 5. and 6. to record all programs which you would like to include for cycle sewing.

* After “9- -” is displayed, “A- -”, “b- -”, “c- -”, “d- -”, “E- -” and “F- -” will be displayed in that order so that up to the 15th pattern can

be recorded.

* If you would like to return to a previous number during the recording procedure, press the P1 switch so that “Pc 1” is displayed, and

then return to step 4.

10. Press the TEST switch w.

• This completes the setting of cycle sewing program No. 1.

* The menu indicators (r to i ) will all illuminate and “c1-1” will appear in the display window !0 to indicate that the cycle sewing

program No.1 is currently selected.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 57

13. CHANGING SPECIAL FUNCTIONS USING THE MEMORY SWITCHES

Using a cycle sewing program

1. When “c1-1” is flashing in the display window !0, press the foot switch to the second step.

2. Start sewing.

3. “c1-1”, “c1-2”, “c1-3” are sewn in order for each article, and when the last-recorded pattern has been sewn, the display returns to “c1-1".

* If you press one of the DISPLAY SET switches !1 when “c1-*” is displayed, you can return to the previous stitch pattern or skip a

stitch pattern.

* If you press the SELECT switch e when “c1-*” is displayed, you can check the contents of the recorded user program.

Clearing a cycle sewing program

1. Switch the machine to recording mode by the procedure in step 3. of recording a user program.

2. Use one of the P* switches (user program switches) to specify which cycle sewing program to clear.

* Press the P1 switch o if you would like to clear cycle sewing program No. 1. (“Pc 1” will be displayed.)

3. Press the RESET switch !2.

* The recorded contents of the specified cycle sewing program will then be cleared. * If you press and hold the RESET switch !2 until after the buzzer has sounded twice, all cycle sewing programs will be cleared.

NOTE:

If you clear a user program after any cycle sewing programs have been recorded, all recorded cycle sewing programs will also be cleared.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 58

14. TABLE OF ERROR CODES

DANGER

If a malfunction should occur with the sewing machine, a buzzer will sound and an error code will appear in the display window. Follow the remedy procedure to eliminate the cause of the problem.

Code

E-13

E-20

E-21

E-30

E-31

E-32

E-40

E-41

E-42

E-50

E-60 E-61 E-62 E-63 E-64 Work clamp does not close.

E-70 E-80

E-81

E-82

E-90

Machine specification select connector is not connected properly.

Problem with machine motor stopping, or synchronizer connection error.

Machine motor operation error. Data is outside possible sewing area due

to enlargement ratio setting. Stitch pattern data overlaps the sewing

area when area limiting is active. The data format of the user program (% or

mm) does not match the setting of DIP switch A-6.

Length of a stitch exceeds 10 mm.

Abnormality in the sewing data.

Invalid program number specified.

Needle bar does not stop when the needle is raised.

Presser has not been lowered. Presser cannot be raised. Presser is not raised. Presser cannot be lowered.

Cooling fan does not operate. Motor PROM is not correctly inserted.

Foot switch was depressed when the power was turned on.

An operation panel switch was depressed when the power was turned on.

Abnormal drop in power supply voltage, or power was turned on again immediately after it was turned off.

Cause

Remedy

Turn off the power and check if connectors P3 is disconnected.

Turn off the power, and then turn the machine pulley to check if the machine has locked up. Check the synchronizer connection. Check if connectors P11, P12 and P13 are disconnected.

Turn off the power and check the ground wire connection.

Press the RESET switch, and then set the enlargement ratio again.

Press the RESET switch, and then reset the memory switches “30” and “31” or enlargement ratio.

After changing the setting of DIP switch A-6, clear all memory settings. (Refer to “10-16. Clearing all memory settings”.)

Press the RESET switch, and then set the enlargement ratio again.

If programming a new sewing data, repeat the procedure from the beginning.

Press the RESET switch and specify a correct number.

Turn the pulley to align the index mark with the needle up stop position. (Refer to “10-12. Adjusting the needle up stop position”.) Check the V-belt tension. (Refer to “3-14. Installing the V-belt”.)

Refer to “16. Troubleshooting”. Turn off the power and check the connection of presser sensor connector P1.

Turn off the power, and then check if the cooling fan is blocked with scraps of thread.

Turn off the power and check. Turn off the power and check.

Turn off the power and check the operation panel. Check that all panel cords are normal.

Turn off the power and check the input voltage. After turning off the power, wait 3 seconds or more before turning it on again. (Refer to “10-15. Checking the input voltage”.)

E-91

Abnormal rise in power supply voltage.

*B432E Mark II only

Turn off the power and check the input voltage. (Refer to “10-15. Checking the input voltage”.)

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 59

14. TABLE OF ERROR CODES

Code

E-A0

E-b0

E-d0

E-E0

E-E1

E-E2

E-F0

Cause

Home position cannot be detected (malfunction of home position sensor), or malfunction of power supply circuit board.

You tried to change the program number when DIP switch A-8 was set to ON.

Heat sink of control circuit board is abnormally hot.

Malfunction of EEPROM (malfunction of main circuit board).

Corrupted EEPROM data, or main PROM version has been upgraded.

Corrupted EEPROM control information data.

Solenoid short-circuit (malfunction of main circuit board), or power relay is not operating (malfunction of power supply circuit board).

Remedy

Turn off the power and check the connection of home position sensor connector P1.

Press the RESET switch. Set DIP switch A-8 to OFF before trying to change the program number.

Turn off the power and clean the air intake port of the box.

Turn off the power, and turn it back on. If the error continually occurs, contact a qualified service technician.

Press the RESET switch to reset the error. However, the data (memory switches, display and user programs) will be reset to the backup data or initialized.

Press the RESET switch to reset the error. However, the data (memory switches, display and user programs) will all be initialized.

Turn off the power and contact a qualified service technician.

E-F1

E-F2

Bad connection in cable between power supply circuit board and main circuit board.

Abnormal current detected in power supply circuit board.

Turn off the power and check if connectors P16 is disconnected.

Turn off the power and contact a qualified service technician.

■ Errors generated when optional equipment is connected

Code

Cause

Turn the EMERGENCY STOP switch clockwise to

E-10

Emergency stop switch was pressed.

release the lock, and then press the RESET switch to reset the error.

Turn the EMERGENCY STOP switch clockwise to

E-11

Emergency stop switch was pressed during sewing.

release the lock, and then press the RESET switch to reset the error. You can then press the STEP BACK switch to repeat the sewing.

Emergency stop switch is being

E-12

continually pressed, or emergency switch

Turn off the power and check.

connection error.

Turn the EMERGENCY STOP switch clockwise to

E-14

Thread breakage detected.

release the lock, and then press the RESET switch to reset the error. You can then press the STEP BACK switch to repeat the sewing.

Remedy

REFERENCE segment LED alphabet

Panel display

Text display A b c d E F 6 H L o

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 60

15. GAUGE PARTS LIST ACCORDING TO SUBCLASSES

The following are standard gauge parts according to each specification. (In the following table, parts marked with ★ are common with the LK3-B430E; parts with ✩ are common with the BAS-311E.)

B430E Mark II

Specification

Part name Needle hole plate

Bobbin case assy

Tension spring

Screw

Spring, anti-spin

-2 -5-1 -7

✩

(φ2.6)

S10212-101 E

152690-301 B 159610-201 A

S15902-401 LA S15902-401 LA

154340-001 B

154342-001 B

S15667-001 LA

★

✩

★

✩

154341-001

S16492-101 LA

★

✩

(φ2.2)

S49980-001 FM

154339-001 A

S16074-101 LAS16074-101 LA

159612-001 A

S15667-001 LA

★

✩

★

✩

★

✩

★

✩

(φ1.6)

S10211-001 A

★

159610-201 A

★

154339-001 A

★

154341-001

★

159612-001 A

Bobbin

Shuttle hook

Large shuttle hook

Spring tension

Spring

159613-051

S15665-001 LA

152687-902 B 152685-903 A

S15663-991 LB S15662-992 LA

152686-101 B 152682-101 A

107606-001 104525-001

144588-001 B 145519-001

★

✩

★

✩

★

✩

★

159613-051

★

152685-903 A

★

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 61

15. GAUGE PARTS LIST ACCORDING TO SUBCLASSES

Specification

Part name Thread guide,

-2 -5-1 -7

★

needle bar

152890-001 A S41222-001 B

Needle assy

★

S37928-419 107415-414 107415-409

B430E Mark II

★

Needle

Work clamp arm assy

Work clamp, U

Feed plate

Spec.

Part name Needle hole plate

Bobbin case assy

★

DP × 17 NY #19

S37928-019

S49591-001 S49594-001 S51095-001

5.6 × 23

(for 3mm use)

R. 153608-101 L. 154527-001

★★ ★

4 × 18

(for 2mm use)

R. 152777-001 L. 152778-001

12 × 31

S49697-001

(Submerged-type, L)

S49698-001

DP × 5 #14

107415-014

S49596-001

4 × 12

(for 2mm use)

R. 152779-001 L. 152780-001

16 × 24

(Submerged-type, S)

S49700-001

B431E Mark II

-2

-3 –

(φ2.2)

S49980-001 FM

159610-201 A

★★

★

DP × 5 #9

107415-009

★

(for 2mm use)

R. 49695-001

L. S49694-001

5.4 × 13.4

(for 2mm use)

S49696-001

B432E Mark II

(φ2.2)

S49980-001 FM

159610-201 A

4 × 12

★

Tension spring

Screw

Spring, anti-spin

S15902-401 LA

154339-001 A

S16074-101 LA

154341-001

S16492-101 LA

159612-001 A

S15667-001LA

LK3-B430E-, B431E-, B432E-, B433E- Mark II

✩✩

★★

✩✩

★★

✩✩

★★

✩✩

S15902-401 LA

154339-001 A

S16074-101 LA

154341-001

S16492-101 LA

159612-001 A

S15667-001 LA

Page 62

15. GAUGE PARTS LIST ACCORDING TO SUBCLASSES

Spec.

Part name Bobbin

Shuttle hook

Large shuttle hook

Spring tension

Spring

-2

B431E Mark II

159613-051

S15665-001LA

152685-903 A

S15662-992 LA

152682-101 A

104525-001

B432E Mark II

-3 –

★★

✩✩

★★

✩✩

159613-051 A

S15665-001 LA

152685-903 A

S15662-992 LA

★★

152682-101 A

★★

104525-001

★★

Thread guide, Needle bar

Needle assy

Needle

Work clamp arm assy

Work clamp, U

431-S

S51848-001

431-S

154416-101

DP × 5#14

107415-014

431-L

S51851-001

431-L

154417-101

145519-001145519-001

★★

S41222-001 BS41222-001 B

★★

107415-414107415-414

★★

DP × 5#14

107415-014

–

Feed plate

S51852-001 LS51853-001 S

LK3-B430E-, B431E-, B432E-, B433E- Mark II

432

S51084-001

Page 63

15. GAUGE PARTS LIST ACCORDING TO SUBCLASSES



Spec.

Part name Needle hole plate

-2

(φ2.6)

✩

S10212-101 E

Bobbin case assy

★

S15902-401 LA

B433E Mark II

-1 -7

(φ2.2)

S49980-001 FM

159610-201 A152690-301 B

(φ1.6)

✩

S10211-001 A

★★

159610-201 A

✩

Tension spring

Screw

Spring, anti-spin

Bobbin

Shuttle hook

Large shuttle hook

154340-001 B

154342-001 B

152687-902 B

S15663-991 LB

★

S16074-101 LA

154341-001

S16492-101 LA

✩

S15667-001 LA

159613-051

S15665-001 LA

★

✩

★

154339-001 A

159612-001 A

152685-903 A

S15662-992 LA

★★

154339-001 A

✩

★★

154341-001

✩

★★

159612-001 A

✩

★★

159613-051

✩

★★

152685-903 A

✩

★

Spring tension

Spring

Thread guide, Needle bar

Needle assy

Needle

152686-101 B

107606-001

144588-001 B

152890-001 A

DP × 17 NY#19

S37928-019

152682-101 A

★

104525-001

★

145519-001

★

S41222-001 B

★★

107415-414

★

DP × 5 #14

107415-014

★

107415-409S37928-419

★★

DP × 5#9

107415-009

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 64

15. GAUGE PARTS LIST ACCORDING TO SUBCLASSES

B433E Mark II

Part name

Spec.

-2

-1 -7

Presser blank

433-2

S41353-001

433-1

S41352-001

Feed plate blank

433-2

S41355-001

433-1

S41354-001

Standard sizes for work clamps and feed plates are as follow: (The actual sewing area has 1.5 mm margin on every size; inside the lines which the dimensions indicate.)

Model

Spec.

B430E Mark II

-1 -5-2 -7 R 152777-001 152779-001153608-101 S49695-001 L

Work

clamp, U

5.6

152778-001

152780-001154527-001 S49694-001

30.2

Feed plate

21.2

Model B432E Mark IIB431E Mark II

Spec.

154416-101

Work

clamp,

Feed plate

S49698-001 S49700-001S49697-001 S49696-001

13.4

-3 –-2

154417-101

118249-001 118250-001

S51852-001 S51084-001S51853-001

5.4

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 65

15. GAUGE PARTS LIST ACCORDING TO SUBCLASSES < Gauge parts >

The following are provided as optional gauge parts. Each work clamp pair and presser pair are used in combination with the feed plate directly below them.

• Work clamps (★) and feed plate (For B430E Mark II)

1234

152781-001 (For denim) 152782-001 (For denim)

153201-001 (PL) 153202-001 (PL)

153203-001 (PS) 153204-001 (PS)

S00906-001 (1 Inch) S00907-001 (1 Inch)

Work

clamp, U

Feed plate

Work

clamp, U

5.6

5.6 5

22 12

28.4

S49942-001 (For denim) S49943-001 (PL) S49944-001 (PS) S49946-001 (1 Inch)

32.9

5678

S33747-001 (30mm)

S33748-001 (30mm)

5.6

153201-001 (For denim)

153202-001 (For denim)

152777-001 (PM)

152778-001 (PM)

S49948-001 (30mm) S49949-001(For denim) S49943-001 (PL)

152779-001

(For knitted materials)

152780-001

(For knitted materials)

S49699-001

(For knitted materials)

21.2

Feed plate

5.6

S49945-001(MS)

112.5

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 66

15. GAUGE PARTS LIST ACCORDING TO SUBCLASSES

Work

clamp, U

Feed

plate

Work

clamp, U

S46771-001

(For straight bar

tacking)

S46770-001

(For straight bar

tacking)

32.4

S49970-001

(For straight bar

tacking)

156006-001

11 12 13

S46771-001

(For straight bar

tacking/submerged)

S46770-001

(For straight bar

tacking/submerged)

5.6

32.4

5.6

S49974-001

(For straight bar

tacking/submerged)

16.5

S46774-001

(For vertical bar

tacking)

S46773-001

vertical

(For

bar

tacking)

4.4

S49971-001

(For vertical bar

tacking)

S46774-001

(For vertical bar

tacking/submerged)

S46773-001

(For vertical bar

tacking/submerged)

4.4

S49975-001

(For vertical bar

tacking/submerged)

156006-001 156006-001 156006-001017680-512 017680-512 017680-512 017680-512

Bolt

Work

clamp, U

Feed

plate

S46777-001

(For circular stitching)

S46776-001

(For circular stitching)

φ13

S49972-001

(For circular stitching)

φ13

S46780-001

(For crescent bar

tacking)

S46779-001

(For crescent bar

tacking)

14.6

S49973-001

(For crescent bar

tacking)

14.6

Presser

blank

Feed

plate

blank

15994-000

20.4

S49976-000

with lozenge

S49977-000

S49978-000

156006-001

017680-512017680-512

Work

clamp, U

Bolt

* Separate programs must be created if using 14 or 15.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Without lozenge

Page 67

15. GAUGE PARTS LIST ACCORDING TO SUBCLASSES

• Presser and feed plate (For B433E Mark II)

234

S43441-001

(For vertical bar

S43955-001

tacking)

S43442-001

(For vertical bar

S43956-001

tacking)

S46788-001

(For vertical bar

tacking)

S46787-001

(For vertical bar

tacking)

S46791-001

(for circular stitching)

S46790-001

(for circular stitching)

Presser

Feed plate

Presser

4.6

S43440-001

(For vertical bar

tacking)

13.6

S46794-001

(For crescent bar

taccking)

S46793-001

(For crescent bar

taccking)

156087-001

S46785-001

(For straight bar

tacking)

S46784-001

(For straight bar

tacking)

S46786-001

(For vertical bar

tacking)

5.8

S46789-001

(for circular stitching)

φ13

14.6

S46792-001

(For crescent bar

taccking)

Feed plate

14.6

• Needle hole plate (✩)

S10211-001A S51449-001AF

φ1.6

For knitted

materials

φ2.2

φ1.6

S30926-001FD

φ10

φ2.2

S46783-001

(For straight bar

S41013-001BZ

S49980-001FM

For ordinary

materials

32.8

tacking)

S29997-001D

φ2.2 φ2.6

S30450-001H

φ2.2

φ2.6

4.8

S10212-101E

φ4

For denim

S25127-001L

φ4.7

φ2.6

φ3.3

2.8

S30925-001ED

φ10

φ3.4

φ2.6

S34348-001MS10213-001F

φ6.5

φ4

2.8

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 68

16. TROUBLESHOOTING

Problem Cause Check Remedy Page

16. TROUBLESHOOTING

Presser does not rise.

Presser does not drop.

Presser lift amount is incorrect.

Work clamp does not close.

Work clamp operation is sluggish.

Presser lifter amount is too great.

Too much friction between presser plate and presser arm lever support.

Presser is contacting thread wiper.

Presser lifter link is not moving back.

Incorrect position of presser arm lever plate.

Incorrect position of presser closing roller.

Sliding part of the work clamp lubrication

Distance between work clamp and top of needle plate

Presser plate and presser arm lever support lubrication

Thread wiper standby position

Link return spring is unhooked.

Distance between work clamp and top of needle plate

Whether stop lever is engaged with stop position adjustment bar or not

Grease the sliging part of the work clamp.

Adjust the height of the work clamp to within 17 mm.

Grease the presser plate and presser arm lever support.

Adjust the position of the thread wiper.

Hook the link return spring properly.

Adjust the work clamp lift amount.

Adjust the position of presser closing roller.

•

Thread wiper does not operate correctly.

Lower thread winds to one side.

Lower thread winding amount is incorrect.

Threads comes unthreaded.

The thread wiper is obstructing the needle.

Thread wiper position is incorrect.

Bobbin winder thread tension stud height is incorrect.

Bobbin presser position is incorrect.

Stitches being skipped at the sewing start.

Uneven upper thread length.

Upper thread is too short.

Clearance beween thread wiper and needle tip

Thread wiper position

Bobbin winder thread tension stud height

Thread winding amount

Refer to "Skipped stitches occur"

Upper thread length

Thread take-up lever stroke

Adjust the height of the thread wiper.

Adjust the operating distance of the thread wiper.

Adjust the height of the thread tension stud.

Adjust the position of the bobbin presser.

Refer to "Skipped stitches occer".

Adjust the subtension.

Adjust the thread take-up lever stroke.

*1 Not applicable for the B432E Mark II. *2 B432E Mark II only.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 69

16. TROUBLESHOOTING

Problem Cause Check Remedy Page

Upper thread breaks.

Lower thread breaks.

Upper thread tension is too strong.

Needle is installed incorrectly.

Thread is too thick for the needle.

Thread take-up spring tension and height are incorrect.

Damaged or burred rotary hook, needle hole plate or needle.

Thread melting (synthetic thread)

Lower thread tension is too strong.

Corners of needle hole plate or bobbin care are damaged.

Upper thread tension

Needle direction

Thread and needle

Thread take-up spring tension and height

Damage or burring

Thread edge

Lower thread tension

Damage

Adjust the upper thread tension.

Install the needle so that the groove is facing forward.

Use the correct thread for the needle.

Adjust the tension and height of the thread take-up spring.

File smooth or replace the afffected part.

Use a thread cooling device (optional).

Adjust the lower thread tension.

File smooth or replace the affected part.

Skipped stitches occur.

Needle breaks.

Clearance between needle and rotary hook tip is too great.

Incorrect needle and rotary hook timing.

Driver is contacting needle more than is necessary.

Needle clearance

Needle bar lift amount

Clearance between driver and needle

Adjust the needle clearance.

Adjust the needle bar lift amount.

Adjust the driver needle guard.

Needle is bent. Bent needle Replace the needle.

Needle is installed incorrectly.

Needle is touching

Needle direction

Needle clearance

Install the needle so that the groove is facing forward.

Adjust the needle clearance.

the rotary hook.

Needle bar lift amount.

Adjust the needle bar lift amount.

Needle is bent. Bent needle Replace the needle.

Needle is too thin. Needle and thread

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Use the correct needle for the material.

Page 70

16. TROUBLESHOOTING

Problem Cause Check Remedy Page

Upper thread is not trimmed.

Thread jamming.

Fixed knife is blunt.

Fixed knife blade

Shuttle race thread

Movable knife does

guide position

not pick up the thread.

Needle bar lift amount

The movable knife does not pick up the thread because of skipped stitches at the sewing end.

Movable knife position is incorrect.

Sub-tension is too weak.

Thread take-up spring tension and height are incorrect.

Incorrect needle and rotary hook timing.

Skipped stitches at sewing end

Movable knife position

Sub-tension

Thread take-up spring tension and height

Needle bar lift amount

Sharpen or replace the fixed knife.

Adjust the position of the shuttle race thread guide.

Adjust the needle bar lift amount.

Refer to "Skipped stitches occur".

Adjust the position of the movable knife.

Turn the sub-tension nut to adjust the tension.

Adjust the tension and height of the thread take-up spring.

Adjust the needle bar lift amount.

Poor seam finish on reverse side of material.

Incorrect thread tightness.

Shuttle race thread guide is not separating the threads.

Upper thread is not properly tight.

Uneven upper thread length.

Upper thread is too long.

Upper thread tension is too weak.

Lower thread tension is too weak.

Thread take-up spring tension and height are incorrect.

Shuttle race thread guide position

Upper thread tension.

Upper thread length

Thread take-up lever stroke

Upper thread tension

Lower thread tension

Thread take-up spring tension and height

Adjust the position of the shuttle race thread guide.

Adjust the upper thread tension.

Adjust the subtension.

Adjust the thread take-up lever stroke.

Adjust the upper thread tension.

Adjust the lower thread tension.

Adjust the tension and height of the thread take-up spring.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 71

17. OPTIONAL PARTS

■ Two-pedal foot switch.......................................T he p res se r sw itch and the start switch have been separated,

giving the operator more flexibility to select the best method of working.

■ Two-step foot switch .........................................This is a pedal-type foot switch.

■ Liquid cooling tank . .......................................... T hi s he lps to prevent thread breakages caused by friction

when using synthetic threads. Fill the tank with silicone oil (100 mm2/s).

■ Work clamp set QC............................................ The work clamp can be easily replaced by loosening the bolt

and moving work clamp arm levers.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 72

17. OPTIONAL PARTS

■ Solenoid thread wiper.......................................This wipes the thread independently of the work clamp op-

eration.

■ Thread take-up device ......................................This ensures a longer upper threaed trailing.(This thread take-

up device is for denim material.)

■ Emergency stop switch ....................................If the emagency stop switch has been pressed during sew-

ing, the machine can be stop. And, you can move the feed mechanism back in steps to the desired position and then start sewing again.

LK3-B430E-, B431E-, B432E-, B433E- Mark II

Page 73

INSTRUCTION MANUAL

BROTHER INDUSTRIES,LTD. NAGOYA,JAPAN

Printed in Japan

118-V30, V31

V32, V33

S91V30-102,-10+

2000.03. B (1)