INSTRUCTION MANUAL
LK3-B448E / BA-16
Please read this manual before using the machine.
Please keep this manual within easy reach for quick reference.
ELECTRONIC LOCKSTITCH BUTTON SEWER WITH BUTTON
FEEDER
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DANGER
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.
CAUTION
Environmental requirements
The ambient temperature should be within the range
of 5°C to 35°C during use.
Temperatures which are lower or higher than this
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.
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 for-
mation 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.
Avoid exposure to direct sunlight during use.
Exposure to direct sunlight 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.
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.
Installation
Machine installation should only be carried out by a
qualified technician.
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.
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.
Install the belt covers to the machine head and motor.
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.
If using a work table which has casters, the casters
should be secured in such a way so that they cannot
move.
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 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 in-
flammation can result.
Furthermore, do not drink the oil or eat the grease
under any circumstances, as they can cause vom-
iting and diarrhoea.
Be sure to connect the ground. If the ground connec-
tion is not secure, you run a high risk of receiving a
serious electric shock, and problems with correct
operation may also occur.
Keep the oil out of the reach of children.
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CAUTION
Sewing
This sewing machine should only be used by opera-
tors who have received the necessary training in safe
use beforehand.
If using a work table which has casters, the casters
should be secured in such a way so that they cannot
move.
The sewing machine should not be used for any
applications other than sewing.
Attach all safety devices before using the sewing
machine. If the machine is used without these devices
attached, injury may result.
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.
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.
Set the needle to the needle up stop position before
turning on the power.
If this is not done, the wiper may strike the needle,
which might cause the needle to break.
If the machine develops a problem, contact your
nearest Brother dealer or a qualified technician.
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
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 in-
flammation can result.
Set the needle to the needle up stop position before
turning on the power.
If this is not done, the wiper may strike the needle,
which might cause the needle to break.
Furthermore, do not drink the oil or eat the grease
under any circumstances, as they can cause vom-
iting and diarrhoea.
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.
Keep the oil out of the reach of children.
Maintenance and inspection
Maintenance and inspection of the sewing machine
should only be carried out by a qualified technician.
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.
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 stop position before
turning on the power.
If this is not done, the wiper may strike the needle,
which might cause the needle to break.
Use only the proper replacement parts as specified by
Brother.
If any safety devices have been removed, be abso-
lutely sure to re-install them to their original positions
and check that they operate correctly before using the
machine.
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.
Any problems in machine operation which result from
unauthorized modifications to the machine will not be
covered by the warranty.
• 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.
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c 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.
1
Hazardous voltage
will cause injury.
Hochspannung
Un voltage non adapt
provoque des blessures.
Un voltaje inadecuado
puede provocar las
heridas.
verletzungsgefahr!
Bitte schalten sie den
hauptschalter aus und
warten sie 5 minuten,
bevor sie diese
Turn off main
Eteindrel’interrupteur et
attendre 5 minutes
avantd’ ouvrir le capot
switch and wait 5
minutes before
opening this cover.
Apagar el interruptor
principal y esperar 5
minutos antes de abrir
esta cubierta.
abdeckung ffnen.
Be sure to connect the ground.
If the ground connection is not secure,
you run the risk of receiving a serious
electric shock.
2
3
4
CAUTION
Moving parts
may cause injury.
Operate with safety devices.
Turn off main switch before
threading, changing bobbin
and needle, cleaning etc.
Direction of operation
Safety devices:
qBelt cover,
wThread take-up cover,
eEye guard,
rMotor cover,
tThread take-up solenoid cover, etc.
4
w
q
3
1
t
1
e
2
r
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CONTENTS
1. Name of each part ................................................................................................................. 1
2. Specifications .......................................................................................................................... 2
2-1. Specifications.............................................................................................................................. 2
2-2. Program list................................................................................................................................. 3
2-3. Optional parts.............................................................................................................................. 6
3. Installation .................................................................................................................................. 7
3-1. Power table ................................................................................................................................. 7
3-2. Installing the motor...................................................................................................................... 8
3-3. Installing the motor pulley ........................................................................................................... 8
3-4. Installing the control box ............................................................................................................. 9
3-5. Installing the oil pan .................................................................................................................. 10
3-6. Installing the cushions............................................................................................................... 10
3-7. Installing the machine head .......................................................................................................11
3-8. Installing the head rest ...............................................................................................................11
3-9. Installing the liquid cooling tank, optional.................................................................................. 12
3-10. Installing the vibrating bowl..................................................................................................... 12
3-11. Installing the control box (for vibrating bowl) ........................................................................... 12
3-12. Installing the button feeder...................................................................................................... 13
3-13. Installing the shooter............................................................................................................... 13
3-14. Connecting the cords .............................................................................................................. 14
3-15. Installing the button feeder cover............................................................................................ 16
3-16. Installing the operation panel .................................................................................................. 17
3-17. Connecting the ground wire .................................................................................................... 17
3-18. Installing the V-belt.................................................................................................................. 18
3-19. Installing the belt cover ........................................................................................................... 19
3-20. Installing the foot switch.......................................................................................................... 19
3-21. Installing the motor cover........................................................................................................ 20
3-22. Installing the spool stand ........................................................................................................ 20
3-23. Installing the eye guard........................................................................................................... 20
3-24. Adjustment by the accessory spring ....................................................................................... 21
4. Lubrication................................................................................................................................ 22
4-1. Lubrication points...................................................................................................................... 22
4-2. Applying grease ........................................................................................................................ 23
4-3. Draining the oil .......................................................................................................................... 23
5. Operation ................................................................................................................................... 24
5-1. Name and function of each operation panel item ..................................................................... 24
5-2. Operating procedure ................................................................................................................. 26
5-2-1 . Setting the program number ........................................................................................... 26
5-2-2 . Setting the X-scale and Y-scale ...................................................................................... 26
5-2-3 . Setting the sewing speed................................................................................................ 26
5-3. Operating the button feeder ...................................................................................................... 27
5-4. Operating the vibrating bowl ..................................................................................................... 27
6. Checking the sewing pattern ........................................................................................ 28
7. Correct use ............................................................................................................................... 29
7-1. Selecting the needle and thread ............................................................................................... 29
7-2. Installing the needle .................................................................................................................. 29
7-3. Threading the upper thread ...................................................................................................... 29
7-4. Winding the lower thread .......................................................................................................... 30
7-5. Replacing the bobbin case and threading the thread ............................................................... 31
7-6. Thread tension reference guide ................................................................................................ 31
7-6-1. Lower thread tension ....................................................................................................... 31
7-6-2. Upper thread tension ....................................................................................................... 31
7-6-3. Thread take-up spring height ........................................................................................... 32
7-6-4. Thread take-up spring tension ......................................................................................... 32
7-6-5. Adjusting arm thread guide R .......................................................................................... 32
7-6-6. Thread take-up amount ................................................................................................... 32
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8. Sewing ......................................................................................................................................... 33
9. Maintenance and inspection.......................................................................................... 34
9-1. Cleaning the rotary hook ........................................................................................................... 34
9-2. Cleaning the control box air inlet port ....................................................................................... 34
9-3. Cleaning the eye guard............................................................................................................. 35
9-4. Checking the needle ................................................................................................................. 35
10. Adjustments .......................................................................................................................... 36
10-1. Adjusting the needle bar height............................................................................................... 37
10-2. Adjusting the needle bar lift amount........................................................................................ 37
10-3. Adjusting the driver needle guard ........................................................................................... 38
10-4. Adjusting the needle clearance ............................................................................................... 38
10-5. Adjusting the shuttle race thread guide................................................................................... 38
10-6. Adjusting the thread take-up amount ...................................................................................... 39
10-7. Adjusting the movable knife .................................................................................................... 39
10-7-1. Replacing the movable knife and fixed knife ................................................................. 40
10-7-2. Adjustment the engagement of the movable knife and fixed knife................................. 41
10-8. Adjusting the button clamp lift amount .................................................................................... 41
10-9. Adjusting the holding pressure................................................................................................ 42
10-10. Adjusting the position of the button holder ............................................................................ 42
10-11. Adjusting the button clamp height ......................................................................................... 43
10-12. Adjusting the needle up stop position ................................................................................... 44
10-13. Adjusting the thread wiper..................................................................................................... 44
10-14. Adjusting the vibrating bowl .................................................................................................. 45
10-15. Adjustment for excess buttons in the button shooter ............................................................ 46
10-16. Button replacement ............................................................................................................... 47
10-16-1. Adjustment when the button diamenter is changed ..................................................... 47
10-16-2. Adjustment when the button thickness changed.......................................................... 48
10-16-3. If button hole arrangements differ ................................................................................ 48
10-16-4. Adjusting the button carrier plate ................................................................................. 48
10-16-5. Adjusting the feeder position adjustment ..................................................................... 49
10-16-6. Adjusting the needle location ....................................................................................... 50
10-17. Replacement the V-belt......................................................................................................... 51
10-18. Checking the input sensor and DIP switch input................................................................... 53
10-19. Checking the input voltage.................................................................................................... 54
10-20. Moving stitch patterns ........................................................................................................... 55
11. Using the counters............................................................................................................ 56
11-1. Using the bobbin thread counter ............................................................................................. 56
11-2. Using the production counter .................................................................................................. 56
12. Using user programs....................................................................................................... 57
13. Using the cycle sewing function .............................................................................. 59
14. Changing functions using the DIP switches..................................................... 61
14-1. Operation panel DIP switches................................................................................................. 61
14-2. Setting the presser mode ........................................................................................................ 61
14-3. DIP switches inside the control box ........................................................................................ 62
15. Changing special functions using the memory switches......................... 63
15-1. Clearing all memory settings................................................................................................... 63
16. Table of error codes ......................................................................................................... 65
17. Adjustment guide refer to this guide
when different button are used ................................................................................. 67
18. Troubleshooting.................................................................................................................. 68
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1.Name of each part
1. Name of each part
i
!4
e
!5
u
!0
!1
!7
y
!3
!6
o
q
t
!2
w
r
qPower switch
tMotor
wControl box
yTension release lever
eOperation panel
uPulley
rFoot switch
iSpool stand
oThread take-up lever
!Eye guard
!Thread take-up solenoid
!B
0
utton feeder
!V
1
ibrating bowl
elt cover
!C
2
ontrol box
otor cover
3
!T
4
hread take-up cove
!B5
!M6
7
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2. Specifications
2. Specifications
2-1. Specifications
Stitch formation
Single needle lock stitch
2,500 rpm
Maximum sewing
speed
Maximum pattern size
0 - 6.4 ✕ 0 - 6.4 mm
TQ ✕ 1#12
Needle
Dimensions of buttons
that can be sewn
Outer diameter of button 9 - 22 mm
Space between the button holes 2.5 - 6.4 mm
Button clamp height
Thread knot
10 mm (standard)
Knot tied by needle
Feed mechanism
Stitch length
R-θ intermittent feed mechanism (pulse-motor driven mechanism)
0.1 - 6.4 mm
Variable (13, 15, 17, 19, 20, 22, 23, 24, 26, 27, 28, 30, 32, 34, 38 stitches
pre-set)
Number of stitches
Maximum stitch
number
20,000 stitches (including 10,000 stitches which can be added)
Work clamp lifter
Rotary hook
Solenoid type
Shuttle hook
Wiper device
Standard equipment. (Solenoid-type thread wiper (Option)
Thread trimmer device
Standard equipment
Thread take-up device
Data storage method
Standard equipment
P-ROM (Any sewing pattern can be added using BAS-PC/300.)
Number of user
programs
16
4
Number of cycle
programs
49 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.)
Number of stored data
Motor
Three-phase 400W induction motor
Machine head: 47kg, Operation panel: 0.6kg,
Control box: 9 - 19kg (depending on destination)
Weights
Single-phase 220 - 230V
3-phase 220, 380, 400, 415V
Power source
Maximum electric power consumption; 600VA
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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 needle drops down in the hole of the button.)
No. of
crossover
stitches
No. of
button holes
Sewing
pattern
No. of
threads
No. of
Standard
Standard
Program No.
stitches sewing length X sewing width Y
__
__
__
__
__
__
__
__
__
__
__
__
__
1
2
3
4
6
8
13
15
17
10
3.4m m
0m m
12
19
23
27
13
17
19
22
28
22
28
20
24
26
28
32
26
30
34
38
*1
5
2
16
*1
*2
*2
*2
*2
*2
*2
*2
*2
*2
*2
*2
*2
*3
*3
*3
*3
6
20
7
6
23
8
10
0m m
3.4m m
12
9
5-5-5
7-7-7
5-5-5
7-7-7
6-6
24
25
26
10
11
12
13
27
14
28
15
29
3
4
4
2.6m m
2.4m m
1
1
3
1
1
0
0
0
0
8-8
8-8
10-10
12-12
6-6
3.4m m
3.4m m
8-8
10-10
12-12
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2. Specifications
No. of
crossover
stitches
No. of
button holes
Sewing
pattern
No. of
threads
No. of
Standard
Standard
Program No.
stitches sewing length X sewing width Y
16
17
30
18
19
31
45
20
32
33
21
34
6-5
8-7
1
1
1
1
1
1
1
0
0
0
1
1
0
0
1
1
1
1
19
23
27
20
24
10-9
6-6
*2
*2
8-8
3.4m m
3.4m m
*2
10-10
12-12
6-6
28
32
26
30
34
20
28
26
34
20
24
28
32
*2
*3
*3
8-8
4
*3
10-10
6-6
*2
*2
10-10
6-6
2.4m m
3.4m m
*2*3
*2*3
22
10-10
6-6
35
46
47
48
49
8-8
3.4m m
3.4m m
10-10
12-12
*1 Check that the button hole diameter is 2 mm or greater before using the programs.
*2 Do not use the button lifter spring.
*3 the presser foot lifts up once and the wiper operates, and then the other side is sewn, because there is no
crossover thread to be sewn. (Operation will be different if the optional solenoid-type thread wiper is installed.
[Refer to page 5].)
•
If you want to sew a pattern other than one of the standard 24 patterns, you can create your original pattern using
the BAS-PC/300.
Consult with your local Brother Sales Office for details.
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2. Specifications
No. of
crossover
stitches
No. of
button holes
Sewing
pattern
No. of
threads
No. of
Standard
Standard
Program No.
stitches sewing length X sewing width Y
36
37
38
39
40
41
42
6-6
8-8
0
0
0
0
0
0
0
0
0
26
30
34
10-10
12-12
6-6
38
26
30
34
26
34
3.4m m
3.4m m
4
8-8
10-10
6-6
*
43
2.4m m
3.4m m
*
44
10-10
*2 Do not use the button lifter spring.
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2. Specifications
2-3. Optional parts
This helps to prevent thread breakages caused by friction when using
synthetic threads.
Fill the tank with silicone oil (100 mm2/s).
✕✕Liquid cooling tank
✕✕Two-pedal foot switch
The switch has an independent presser switch (left side) and start switch
(right side).
✕✕Solenoid-type thread wiper
When sewing without crossover threads (program Nos 14, 15, 20 and
22, 28, 29 and 32, 33, 35), do not move the button clamp assembly
vertically while sewing is in pro-gress. (Refer to “Changing special
functions using the memory switches” on page 59 “memo 14”.)
✕✕Button spacer set
# S09661-001
For women’s garments
For men’s garments
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3. Installation
3. Installation
CAUTION
Machine installation should only be carried out
result in personal injury or damage to the ma-
by a qualified technician.
chine.
Contact your Brother dealer or a qualified elec-
trician for any electrical work that may need to
be done.
All cords should be secured at least 25 mm away
from any moving parts. Furthermore, do not ex-
cessively bend the cable or secure it too firmly
staples, otherwise there is the danger that fire or
electric shocks could occur.
The sewing machine head weighs more than 47
kg. The installation should be carried out by two
or more people.
Be sure to connect the ground. If the ground con-
nection is not secure, you run the risk of receiv-
ing a serious electric shock.
Do not connect the power cord until installation
is complete, otherwise the machine may
operate if the foot switch is depressed by mis-
take, which could result in injury.
Install the belt covers to the machine head and
motor.
Hold the machine head with both hands when
tilting it back or returning it to its original posi-
tion. Furthermore, after tilting back the machine
head, do not push the face plate side or the pul-
ley side from above, as this could cause
Avoid setting up the sewing machine near
sources of strong electrical noise such as high-
frequency welding equipment.
If this precaution is not taken, incorrect machine
operation may result.
the machine head to topple over, which may
3-1. Power table
• Use the power table which has been specially designed for the B448E.
Model code
* If using a commercially-available table, process it as shown in the illus-
tration below.
Table/legs assembly 127-Z48-00001
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).
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3. Installation
3-2. Installing the motor
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 so that the clearance between the table
and the cushion collars is approximately 1 mm.
Table
1 mm
3-3. Installing the motor pulley
Place the motor pulley qonto the shaft of the motor
wso that the key groove is aligned, and then tighten
the set screw eso 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.
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3. Installation
3-4. Installing the control box
Table
Cushions
Cushion collars
3 mm
Rubber collars
Flat washers
Nuts
1. Remove the 12 screws q, and then open the covers (panel mounting assembly wand 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 iand nuts oas 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 wand main P.C. board mounting plate e), and tighten them with the
screws q.
* The main P.C. board mounting plate ewill be opened again during “3-13. Connecting the cords”, so provisionally
tighten it with the screw q.
4. Install the power switch !
5. Secure the power switch cord with the three staples !
6. Pass the motor cord through the cord hole !.
0
with the two screws !1.
2
.
3
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3. Installation
3-5. Installing the oil pan
1. Insert the tabs of the oil pan winto the holes for the
cushions q, and then secure it in place with the five
nails eso that the oil pan wis not at an angle.
2. While pushing the oil pan wdown from above, screw
in the oil container r.
3-6. Installing the cushions
1. Place the washers q and cushions w into the two
holes in the work table.
* Adjust the height of the machine head to the button
feeder by the number of the washers q.
2. After the height is decided, secure them with the nails
e.
e
w
q
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3. Installation
3-7. Installing the machine head
1. Insert the two hinge assemblies q into the machine
head so that they are parallel, and then secure them
with the two set screw w.
w
2. Place the machine head gently on the table.
NOTE: Pull the cords eout as shown in the illustration
above in order to prevent them from being
clamped by the machine head.
q
1 mm
3. Secure the two hinge assemblies q with the washers
r, the spring washers t, and the bolts y, and install
the machine head.
e
r
t
y
3-8. Installing the head rest
Tap the head rest q into the table hole.
NOTE:
Tap the head rest securely into the table hole.
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3. Installation
3-9. Installing the liquid cooling tank, optional
1. Remove the rubber plug, and then push the liquid
cooling tank q.
2. Tighten it with the set screw w.
3-10. Installing the vibrating bowl
1. Install the vibration bowl qwith bolts w, spring wash-
ers e, and washers r.
2. Pass the wires from the vibration bowl qthrough the
hole in the table.
3-11. Installing the control box (for vibrating bowl)
1. Mount the control box qto the bottom of the box stay
ewith screws w.
2. Mount the control box stay eto the bottom of the work
table with wood screws r.
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3. Installation
3-12. Installing the button feeder
1. Move button feeder base qto the front and rear and
left and right as necessary to install it by using hole
bolts w, spring washers eand washers r.
(And install ground wires ty.)
To vibrating bowl
To control box
(For vibrating bowl)
3-13. Installing the shooter
1. Raise the shooter lock pin w on the vibrating bowl q,
and secure the shooter e by inserting the pin w,
through the notch in the shooter.
2. Secure the shooter e with thumb screw ron button
feeder t.
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3. Installation
3-14. Connecting the cords
P8
P1
P2
P3
P4
P5
P6
P7
P11
Machine head connectors
Connection location on circuit board
Connection location
X, Y, Sewing sensor
Synchronizer
No. of pins
12-pin
Cord mark
z
x
P1 (ORG2)
5-pin
P2 (SYNCHRO)
Machine specification
select connector
8-pin
5-pin
4-pin
c
v
b
P3 (SELECT)
P4 (SOL2)
P5 (SOL)
Thread take-up solenoid
Presser solenoid
Thread trimmer solenoid
Pulse motor, Y
Pulse motor, X
Operation panel
Upper shaft motor
BA16
4-pin (blue)
4-pin
n
P6 (YPM)
P7 (XPM)
P8 (PANEL)
P11 (UVW)
P14
m
26-pin
3-pin
None
None
None
None
1-pin
BA16
16-pin
P15
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 qthrough the hole win 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 yin the direction of the white arrow and pass
the cords qthrough 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 !,
8. Securely connect connectors P1 to P8 and P11 as indicated in the table.
9. Secure the cords qwith the cord clamps !and !.
1
and then attach the ground cord !0for the upper shaft motor as shown in the illustration.
2
3
10.Close the cord presser plate yin 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.
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3. Installation
ꢀꢀButton feeder connection
Pull on the connector to make sure it will not come disconnected after connecting the pins.
20P connector
control box
Red
White
6P
Button feed
sensor
9P
Black
7P
20P
7P connector
control box
6P connector
Botton stopper solenoid
9P connector
(machine head) Button feeder switch
(for vibrating bowl)
White
White
Black
Red
Black
Red
Brown
Blue
Yellow
White Green
ꢀꢀControl box (for vibrating bowl) connection
Connect the ground wire from the vibrating bowl to the motor.
2P connector
9P connector
Black
White
Green
3P connector (male)
9P connector (female)
Black
Green/
Yellow
White
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3. Installation
ꢀꢀPower switch connection
Power switch connector
(control box)
Control box
(for vibrating
Green/Yerro
Black
White
Red
B
A
Control box
side A
Green/Yerro
Black
White
Red
Control box
side B
Green/Yerro
Red
White
3-15. Installing the button feeder cover
Attach the button feeder cover qto the button feeder w
with screws e, spring washers r, and washers t.
* Be sure to pass the wires through the hole in the
cover when attaching the button feeder cover q.
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3. Installation
3-16. Installing the operation panel
The operation panel can be installed to either the top or bottom of the work table.
r
e
w
q
1. Install the operation panel presser plate q to the top of the button feeder cover with the two screws w.
2. Insert the panel e into the operation panel presser plate q, and then secure it with the two screws r.
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.
3-17. Connecting the ground wire
CAUTION
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.
Connect to the power switch. However, the
black wire is insulated to the inside of the
box and is not used.
. Connect to ground
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3. Installation
3-18. Installing the V-belt
1. Gently tilt back the machine head, and then place the
V-belt qinto the V grooves on the machine head pul-
ley wand 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 assessory tension pulley
assembly r with the assessory 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 qwhen 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 tesion 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:
Approx.
1 mm
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 weak, this will be cause
of following problems;
Approx. 9 - 10 mm
10 N
•
Noise and vibration become large.
•
Needle up stop position becomes unstable.
•
Error message [E-5] is displayed.
Check that the motor is positioned so that the V-belt
is straight. (Fig.1)
Sewing
machine
V-belt
Motor
Fig. 1
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3. Installation
3-19. Installing the belt cover
w
q
e
u
t
r
y
1. Loosen the two screws w of the upper cover q and the two screws r of bed cover L e.
2. Insert the belt cover t in the direction of the arrow, and then secure it with the two screws w.
* When tilting back the machine head, loosen the screws wand r, remove the screw y and then remove the belt
cover tfirst.
3. Attach the rubber plug u to the belt cover.
3-20. Installing the foot switch
[A]
r
!1
!
y
u
i
q
w
0
o
e
t
!4
!3
!
!6
!5
[B]
e
!7
!8
!5
1. Insert the connector of the foot switch einto the connector wof the control box q.
2. Install the foot switch eto the work table leg !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 !and flat washer !as shown in Figure A.
0
1
If foot switch support plate B !is used in a back-to-front position, it can be used as shown in Figure B.
1. Remove the screw !and rubber plug !
* Note that the spring !will come out when the screw !
2. Turn foot switch support plate B !back to front, and then install it with the bolt !,
as shown in Figure B.
NOTE:
3
4
5.
6
4
is removed.
3
7
spring washer !8and flat washer
!
9
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 operation panel while referring to “Setting
the presser mode” on page 41.
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3. Installation
3-21 . 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.
q
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.
w
r
e
u
y
t
3-22 . 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.
q
3-23 . Installing the eye guard
CAUTION
Attach all safety devices before using the
q
sewing machine.
If the machine is used without these devices
attached, injury may result.
Install the eye guard assy w to the face plate q with the
two screws e.
w
e
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3. Installation
3-24. Adjustment by the accessory spring
If you would like the button to be raised up more after it is
sewn, install the accessory spring.
w
1. Install the spring support qwith the bolt w.
2. Install the spring ewith the washer rand the screw
q
t.
* The spring is effective for use with the following sew-
ing patterns:
1-6, 14-17, 20, 28-30, 32, 33, 46-49
* When using a solenoid-type thread wiper, the effec-
tive patterns are:
e
r
t
36-42
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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.
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.
G
NOTE :
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 operation.
Be sure to let the machine operate for a while after adding the oil.
Use only specified Brother oil (Nisseki Sewing Lube 10) for the machine oil.
G
G
4-1 . Lubrication points
2. Fill the bed-side oil tamk with oil
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.
w
q
3. Add oil to the felt qof 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).
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4. Lubrication
4-2. Applying grease
Do not apply too much grease in the place indicated by
the arrow. If too much grease is applied here, the button
clamp may not move up and down smoothly and error
[E-6 ] may appear on the display.
4-3. Draining the oil
1. Remove and empty the waste oil container qwhenever
it is full.
2. After emptying the waste oil container q, screw it back
into its original position.
q
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5. Operation
5 . Operation
5-1 . Name and function of each operation panel item
u
PROGRAM NO.
q
w
P
P1 P2
P3 P4
POWER
i
o
!
!
-
X SCALE
RESET
-
Y SCALE
SPEED
r
e
!
TEST
COUNTER
t
SELECT
BOBBIN.WIND
y
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 !.The illumi-
nated 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.
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5. Operation
PROGRAM NO.
P
P1 P2
P3 P4
POWER
i
o
!
!3
-
X SCALE
RESET
-
Y SCALE
SPEED
!
!
TEST
COUNTER
SELECT
BOBBIN.WIND
!2
y
i X-SCALE indicator ................. Illuminates when the SELECT switch y is pressed to shown the X-scale setting.
o Y-SCALE indicator ................. Illuminates when the SELECT switch y is pressed to shown the Y-scale setting.
! SPEED indicator .................... Illuminates when the SELECT switch yis pressed to shown the speed setting.
! COUNTER indicator............... Illuminates when the SELECT switch yis 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
User program switches .......... Used to set and select user programs.
! Display window ...................... This display window will indicate the current status for the selected menu, error or
memory switch.
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5. Operation
5-2 . Operating procedure
NOTE:
Be sure to check the sewing pattern (refer to page 20) after setting has been completed to make sure that the needle drops
down into the hole of the button.
Factory default Variable range
Preparation
Program No.
X-scale (%)
Y-scale (%)
Speed (rpm )
00 *
100
01 - 49
20 - 200
Turn on the power switch.
(The POWER indicator q will illuminate and the pro-
gram number will flash in the display window !.)
100
20 - 200
2000
1,000 - 2,500
* For checking the origin points for X and Y feed
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
until the PROGRAM NO. in-
dicator illuminates.
Press the DISPLAY SET
Depress the foot switch to the
second step.
* The display will stop flashing and
illuminates steadily, and the feed
mechanism will move to the sew-
ing start position.
1
2
2
2
3
switches !
2
until the desired
program number is flashing in
the display window.
PROGRAM NO.
P
-
X SCALE
y
1st step
2nd step
-
Y SCALE
SPEED
This completes the setting of the program
number.
SELECT
COUNTER
!2
5-2-2 . Setting the X-scale and Y-scale
Press the SELECT switch y
until the X-scale or Y-scale
indicator illuminates.
Press the DISPLAY SET
switches ! until the desired
Depress the foot switch to the
second step.
* The display will stop flashing and
illuminates steadily, and the feed
mechanism will move to the sew-
ing start position.
1
3
2
scale setting is flashing in the
display window. (The setting is
displayed as a percentage.)
PROGRAM NO.
P
-
1st step
2nd step
X SCALE
y
-
Y SCALE
!2
SPEED
This completes the setting of the X-scale
or Y-scale.
SELECT
COUNTER
5-2-3 . Setting the sewing speed
Press the SELECT switch y
until the SPEED indicator il-
luminates.
Press the DISPLAY SET
switches ! until the de-
1
2
sired speed setting is flashing
in the display window.
PROGRAM NO.
P
-
X SCALE
y
-
Y SCALE
SPEED
SELECT
COUNTER
!2
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5. Operation
5-3. Operating the button feeder
1. Button feeder switch q
AUTO1 ... Buttons are supplied automatically after
sewing is complete.
AUTO2 ... When sewing is complete and the button
clamp releases its button, the next button
is supplied.
AUTO 1
OFF
q
AUTO 2
OFF ........Buttons are not supplied automatically.
2. Trouble indicator w
(1) When buttons are being fed to the button clamp,
the trouble indicator wwill be OFF.
(2) When the trouble indicator wis flashing, buttons
are not supplied to the button clamp.
(3) If the trouble indicator w is on, a problem has
occurred. See below.
e
w
BA-1 6
3. Manual switch e
Press to feed a button.
5-4. Operating the vibrating bowl
1. Turn the power switch on.
2. Turn the switch qin the control box on.
3. Turn the adjustment knob w.
Turn the knob right to increase and left to decrease
the amount of vibration of the vibrating bowl.
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6. Checking the sewing pattern
6. Checking the sewing pattern
GGWhen 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. Depress the foot switch to the second step.
(After the home position is detected, the button clamp will rise.)
3. Set the button. (Press the MANUAL switch on the button feeder.)
4. Set the X-scale and Y-scale in accordance with the hole pitch of the buttons being used.
(Refer to “5-2-2. Setting the X-scale and Y-scale”.)
5. Press the TEST switch.
(The TEST indicator will illuminate.)
TEST
6. If the setting was not changed in step 4, proceed to step 7.
Depress the foot switch to the second step.
(Home position detection will be carried out. The work clamp will not rise because this is test mode.)
7. Depress the foot switch to the second step.
1st step
2nd step
Only the feed mechanism will move.
The feed mechanism moves forward by one stitch each time the foot switch is depressed.
Each time the feed mechanism is moved forward by one stitch, turn the machine pulley by hand
and check that the needle goes into the holes in the button without touching the button. Do this
for each hole position. (NOTE)
After checking is complete, depress the foot switch to move the feed mechanism to the end
(
)
position.
* If you depress the foot switch to the 2nd step and keep it depressed until 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.
8. Press the TEST switch.
(The TEST indicator will switch off and the test mode will be cleared.)
TEST
9. Depress the foot switch.
The work clamp will rise and the preparation for sewing will be completed.
NOTE: If the needle touches the button, carry out the following.
1.Check that the needle size correctly matches the diameter of the holes in the button. (Refer to “7-1. Selecting the
needle and thread”.)
2.Make fine adjustments to the X-scale and Y-scale. (Refer to “5-2-2. Setting the X-scale and Y-scale”.)
3.Adjust the position of the button holder. (Refer to “10-10. Adjusting the position of the button holder”.)
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.
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7. Correct use
7. Correct use
7-1 . Selecting the needle and thread
Needle
Thread
#60
Button hole diam eter
1.5m m or greater
1.6m m or greater
1.7m m or greater
Refer to the table at right for details on which needle and
thread to select.
NOTE: Use buttons which have a hole diameter that is greater
than the value given in the table, to ensure that the needle
does not touch the button.
TQ × 1 #11
TQ × 1 #12
TQ × 1 #14
#50
7-2 . Installing the needle
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.
q
Loosen the set screw q, insert the needle w as far as it
will go so that the groove is facing toward you, and then
tighten the set screw q.
w
7-3 . Threading the upper thread
CAUTION
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.
q
w
[When using the liquid cooling tank]
Approx. 40mm
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7. Correct use
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
q
the direction of the arrow, and then press the bob-
bin presser q.
3. Turn on the power switch.
(The POWER indicator on the operation panel will
illuminate.)
4. Check that the button is not inserted and the needle does not
touch the button clamp, and then while pressing the BOBBIN.
WIND switch w, depress the foot switch e to start the ma-
chine. Keep depressing the foot switch e until the lower thread
stops being wound onto the bobbin.
BOBBIN.WIND
Release the BOBBIN. WIND switch w after the machine starts
operating. If you release the foot switch before winding is com-
pleted, depress it once more while pressing and holding the BOB-
BIN. WIND switch w.
e
w
5. The bobbin presser qwill 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.
8. To wind more thread onto
the bobbin, loosen the set
screw t and pull the bob-
bin presser qoutward.
t
r
q
<< 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 thread tension stud w
to adjust.
* If the thread winds on as shown in A, turn the bobbin
winder thread tension stud w clockwise; if it winds on
as shown in B, turn the bobbin winder thread tension
stud wcounterclockwise.
w
q
Case A
Case B
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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.
w
30mm
r
e
q
Pull the shuttle race cover q toward Insert a new bobbin into the bobbin Pass the thread through the lever
you to open it.
case, and then pass the thread through thread hole r, and then pull out ap-
the slot w and pull it out from the proximately 30 mm of thread.
thread hole e. Check that the bobbin
turns in the direction of the arrow when
the thread is pulled at this time.
7-6 . Thread tension reference guide
Thread take-up spring tension
(m m )
Thread
#60 or equivalent
0.4 - 0.6
Upper thread tension (N)
Lower thread tension (N)
0.7 - 1.3
0.3 - 0.4
Pre-tension (N)
Needle
0.1 - 0.3
TQ × 1#12
Thread take-up spring height
(m m )
6 - 8
7-6-1 . Lower thread tension
7-6-2 . Upper thread tension
w
Stronger
Weaker
weaker stronger
q
Stronger
Weaker
q
Adjust the thread tension to the weakest possible tension Turn the tension nut q (main tension) to adjust the ten-
by turning the thread tension nut q until the bobbin case sion as appropriate for the material being sewn.
will not drop by its own weight while the thread end com- Furthermore, turn the thread nut w (sub-tension) to ad-
ing out of the bobbin case is held.
just the remaining length of upper thread to 35 - 40 mm
when the thread take-up lever is not used.
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7. Correct use
7-6-3 . Thread take-up spring height
7-6-4. Thread take-up spring tension
Lower
Higher
q
Stronger
Weaker
q
Loosen the set screw q and turn the tensioner body to
Turn the tension stud qwith a screwdriver.
adjust the thread take-up spring height.
7-6-5. Adjusting arm thread guide R
The standard position of arm thread guide R q is when
the screw w is aligned with mark A.
To adjust the position, loosen the screw wand then move
arm thread guide R q.
* When sewing thick material, move arm thread guide R
qto the left. (The thread take-up amount will become
greater.)
Become
A
greater
Become less
* When sewing thin material, move arm thread guide R
qto the right. (The thread take-up amount will become
less.)
q
w
7-6-6. Thread take-up amount
Loosen the screw qand move the stopper (3.57 nut) w
to adjust the operating angle of the thread take-up sole-
noid e.
* To reduce the thread take-up amount, move the stop-
per wupward.
* To increase the thread take-up amount, move the stop-
per wdownward.
w
Become less
Become greater
q
e
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8. Sewing
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 bobbin and 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.
q
w
Turn the machine pulley so that the index mark q on
the pulley is between the marks
w
on the belt cover.
* If the stop position of the machine pulley is not correct,
error [E-50] will be displayed, because the wiper may
come into contact with the needle and this may cause
the tip of the needle to break.
Turn on the power switch
(The POWER indicator will illuminate and the program number will flash in the display.)
1.
2.
1st step
Depress the foot switch to the 2nd step.
2st step
The feed mechanism will move to the starting
position and the button clamp will rise.
* Note that if the foot switch is pressed to the 2nd step while the display is
illuminated, the machine will start operating.
Install the button.(Press the MANUAL switch.)
3.
4.
Place the material to be sewn under the button clamp, and then depress
the foot switch.
When the foot switch is pressed to the 1st step, the button clamp will lower.
If you would like to shift the position of the material, release the foot switch.
The button clamp will then rise again.
Once sewing is completed and the thread has been trimmed, the button clamp will rise.
* Depending on the sewing data, thread trimming may be carried out or the button clamp may rise during
sewing, but the rest of the sewing will still be carried out automatically.
5.
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9. Maintenance and inspection
9. Maintenance and inspection
CAUTION
Turn off the power switch before starting any cleaning work, otherwise the machine may operate if the
foot switch is depressed by mistake, which could result in injury.
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.
9-1. Cleaning the rotary hook
w
e
q
r
1. Pull the large shuttle hook cover 2. Open the large shuttle hook set 3. Clean all the dust and thread ends
toward you to open it, and
thenremove the bobbin case.
claw q in the direction indicated
by the arrow, and then remove the
large shuttle hook w and the inner
rotary hook e.
from around the driver r, the top
of the rotary hook thread guide and
the shuttle race.
9-2. Cleaning the control box air inlet port
Use a vacuum cleaner to clean the filter in the air inlet
port w of the control box q at least once a month.
* 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 [E-d0]
will be displayed and you will not be able to operate the
sewing machine.
w
q
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9. Maintenance and inspection
9-3. Cleaning the eye guard
Wipe the eye guard clean with a soft cloth.
NOTE:
Do not use solvents such as kerosene or thinner to clean the
eye guard.
9-4. Checking the needle
Always check that the tip of the needle is not broken and
also the needle is not bent before starting sewing.
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10. Adjustments
10 . Adjustments
CAUTION
Maintenance and inspection of the sewing
machine should only be carried out by a quali-
fied 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.
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.
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.
· When carring out inspection, adjustment and
maintenance
· When replacing consumable parts such as the
rotary hook and knife
■ Tileing back the machine head
1. When tilting back the machine head, loosen the screws
qand w, remove the screw eand then remove the
belt cover rfirst.
q
r
w
e
2. Gently tilt back the machine head in the direction of
the arrow.
NOTE:
■
After tilting back the machine head, do not push the
face plate side or the pulley side from above.
Gently return the machine head to its original posi-
■
tion.
Be careful not to clamp the cords at this time.
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10. Adjustments
10-1 . Adjusting the needle bar height
q
w
e
A
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 highest reference line (reference line A) is
aligned with the lower edge of the needle bar bush q.
10-2 . Adjusting the needle bar lift amount
q
t
w
t
e
r
e
y
B
t
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 second reference
line from the top of the needle (reference line B) is aligned with the lower edge of the needle bar bush q.
1. Open the support win 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 tand the wick yuntil they are at the same height as the rotary hook race.
* Return the support wto its original position.
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10. Adjustments
10-3 . Adjusting the driver needle guard
Needle center line
Tip
r
e
e
w
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
q is 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
q
w
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
q
q
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.
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10. Adjustments
10-6.Adjusting the thread take-up amount
q
Thread take-up amount (stroke)
e
Become less
Become greater
w
q
r
At the time of shipment from the factory, the thread take-up amount (stroke) of the thread take-up lever qis set to the
standard setting of 5 mm. You may need to adjust this setting depending on the sewing conditions to prevent the
thread from pulling out at the sewing start.
[Adjustment method]
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 eupward.
* To increase the thread take-up amount, move the stopper edownward.
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
q
B
A
e
w
Loosen the nut wand 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.
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10. Adjustments
10-7-1. Replacing the movable knife and fixed knife
q
q
t
w
e
r
t
u
y
1. Open the large shuttle hook cover, remove the screw q, and then remove the feed plate w.
2. Remove the two screws eand the two screws r, and then remove the needle plate t.
3. Remove the thread trimmer connecting rod yfrom the connecting rod lever pin u.
i
!
!
o
0.5 mm
o
4. Remove the movable knife i and replace it with a 5. Install the fixed knife oat a distance of 0.5 mm from
new one. At this time, check that the movable knife i
and the fixed knife ocut the thread cleanly. If necessary,
the needle hole plate !.
1
adjust by using the appropriate movable knife washer 6. Place the thread trimming connecting rod yonto the
!(supplied as accessories).
connecting rod lever pin u, and then install to the needle
plate t.
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10. Adjustments
10-7-2. Adjusting the engagement of the movable knife and fixed knife
Fig. 1
Movable knife
Fix knife
B
D
A
C
Cutting
edge
Cutting
edge
Cutting
edge
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 button clamp lift amount
e
w
q
10mm
The button clamp lift amount is 10 mm from the top of the needle plate.
To adjust the button clamp lift amout, remove the button clamp presser spring q, loosen the screw wand adjust the
button clamp holder hook eby moving it up and down.
* If movement is sluggish when the button clamp is being raised and lowered, it may not be possible to increase the
button clamp lift amount.
* If the button clamp cannot be raised or lowered, error code [E-61], [E-63] will be displayed.
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10. Adjustment
10-9. Adjusting the holding pressure
Loosen screw q and turn adjustment screw w so that
clamp pressure is as light as possible but high enough so
that the material will not slip when pulled lightly.
* If the clamp pressure is too high, the buttons may not be
fed properly.
w
q
10-10. Adjusting the position of the button holder
1. Loosen the two hexagonal bolts q and adjust the
button holder body wby moving it.
2. Check that the needle will go through the button hole
with no contact. (Refer to “6. CHECKING THE SEW-
ING PATTERN”.)
q
w
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10. Adjustment
10-11. Adjusting the button clamp height
Surface A
Button
Button guide surface
Flush
Adjustment
1. After turning on the power switch, turn AUTO 1 or AUTO 2 the feeder switch.
2. The button carrier will move slowly if the foot switch is turned on with the manual switch depressed.
The sewing machine will operate in inching mode while the manual switch is being pressed, and will stop when the
manual switch is released.
3. Stop machine inching when button transport arm qmoves and the button is at button guide surface A.
4. Make sure that top of button carrier wis flush with the button guide surface of button clamp e.
If they are not properly aligned loosen screw rand move button clamp holder tup or down.
5. Loosen screw y, set presser bar lifter hook A uagainst presser bar lifter roller arm i, and tighten screw y.
* Press the manual switch to return the button transport arm qwhen the adjustment is completed.
6. Turn off the power to cancel inching operation.
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10. Adjustment
10-12. Adjusting the needle up stop position
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
e
counterclockwise.
NOTE:
r
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 posi-
tion, and should not be loosened.
q
t
w
* If the index mark w is not inside the mark r when the
sewing machine is started, error code [E-50] will be dis-
played. Turn the machine pulley to move the index mark
w to the correct position and then start the sewing
machine.
u
y
10-13. Adjusting the thread wiper
w
e
r
q
t
2±0.5mm
(Approx.
30mm)
Approx.
20mm
1. Loosen the set screw wand move the wiper arm support eup or down to adjust so that the clearance between
the top of the thread wiper and the needle point qis 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 3.5 to 4 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.
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10. Adjustment
10-14. Adjusting the vibrating bowl
Gap for double row of buttons
●
The vibrating bowl arranges all of the buttons face up and feeds the buttons to the shooter.
Be sure to readjust the vibrating bowl whenever the buttons are changed.
●
● If buttons are not fed properly, check the following.
1. Loosen screw wand adjust the gap between the bottom of arm B qand the vibrating bowl so that two buttons can
pass.
2. Loosen screw rand adjust the gap between the bottom of arm C eand the vibrating bowl so that one button
can pass.
In addition, the arms should topple any standing buttons to assure a smoother flow.
3. Loosen screw yand adjust the gap between the bottom of arm A tand the vibrating bowl so that one button
can pass.
4. Loosen bolt iand move selector plate uin or out so that the buttons are aligned face up.
5. Loosen screw ! and adjust the gap between the bottom of height control arm oand the top of the buttons to
0
approximately 0.7 mm.
6. Loosen screw rand adjust the button to button width adjustment arm !
buttons are fed to the shooter.
1
gap to approximately 2 mm so that the
and turn it so that buttons do not clog at
7. If buttons become clogged at the entrance to the shooter, loosen screw !
2
the shooter entrance.
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10. Adjustment
10-15. Adjustment for excess buttons in the button shooter
1. Turn the button carrier qby hand in the direction of
the arrow, and remove any buttons from the button
carrier pin w.
2. With the button carrier qin this position, pull lever e
to remove any excess buttons from the shooter at point
A.
3. Press the manual switch to feed a button to the button
clamp.
Point A
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10. Adjustment
10-16. Button replacement
10-16-1. Adjustment when the button diameter is changed
● Slide base adjustment
1. Adjust the width of the slide base assembly wto the button width with slide base screw eso that the bottons
qpass smoothly.
The bed slide base assembly wcan be adjusted for button diameters of 9 to 22 mm.
Adjust so that the clearance between the buttons qand the edge of the slide base assembly wis 0.5-1.0 mm.
2. There are 3 different button upper covers r. The cover for standard button sizes of 9 to 13 mm is factory
installed.
To attach buttons from 13 to 22 mm in diameter, loosen screw tand replace cover r(nonstandard accessories).
3. When the button diameter is changed, adjust button stopper A y with the adjusting screws u. Adjust until
stopper A y slides into the groove of the upper cover r and comes into contact with the second button
(position A).
● Button clamp adjustment
AUTO 1
OFF
AUTO 2
t
BA-1 6
0.5mm~1.0mm
1. Loosen step screw qand insert a button into the button clamp w.
2. Lightly tighten step screw q, and remove the button.
3. Close the button clamp wopening 0.5 to 1.0 mm using the plate e.
4. Firmly tighten step screw q.
5. After the button is inserted, push the lever r slightly in the direction of the arrow to check that the trouble
indicator tdoes not blink.
* If the indicator blinks, move slightly and narrow the button clamp wopening (mentioned in 3. above).
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10. Adjustment
10-16-2. Adjustment when the button thickness changes
1. Check to be sure that buttons qare being smoothly
sent to the shooter w. If the buttons are not fed
smoothly, replace the shooter.
2. Install accessory spacers (0.4 mm, 0.8 mm, ) as
required by the button thickness.
Thickness
Spacer
3. Check to be sure that buttons are being securely
grasped by the button clamp.
*If no spacers are used, button thicknesses from 1.8
to 2.2 mm can be used.
10-16-3. If button hole arrangements differ
(Used to change from a two hole button to a four hole button, or from a four hole button to a two hole button.)
Loosen screw qand replace the button carrier w.
* Adjust the button carrier. (Next page)
* Adjust the feeder position. (Next page)
* Adjust the needle position. (See p.31.)
Screw stop
10-16-4. Adjusting the button carrier plate
1. Remove the button clamp q.
2. Turn the slide base screw !to widen the slide base width, then put the gauge ton the button carrier plate. Turn
the slide base screw !and tighten the gauge at the bottom of the slide base.
*At this time, leave the screw oand the screw iof the stopper uloosened.
3. Adjust the slide base so that the shaft yfits in the hole of the gauge t. Then tighten the screw o.
4. With the button carrier plate wtouching the stopper u, tighten the screw i.
5. Remove the gauge tand insert the shaft yinto the button clamp q.
*This adjustment has already been made at shipping. Therefore, during regular replacement of the button carrier
plate, only the replacement procedure described on the this page is necessary.
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10. Adjustment
10-16-5. Adjusting the feeder position adjustment
* For all programs, the shunting point for the sewing home position point is set to the first stitch position. As long as the
button size is not changed, it is not necessary to change the program in order to adjust the feeder position.
AUTO 1
q
OFF
AUTO 2
L-R
F-B
w
BA-1 6
Two holes
Four holes
1. Turn on the power switch.
2. Check whether or not the feeder switch qis AUTO 1.
3. Press and hold manual switch wand turn the foot switch on. The machine will begin to operate.
* At this time, the machine head will be prevented from operating, and error code "E-C3" will be displayed.
The buzzer will stop sounding when the RESET switch is pressed, but the error code will continue to be displayed,
and so the machine head will still be prevented from operating.
* The sewing machine will operate in inching mode while the manual switch wis being pressed, and will stop when
the manual switch wis released.
4. Continue pressing manual switch wand move button transport arm eall the way forward to the needle.
* Assist the button clamp by lifting up.
5. While pushing the button clamp upward, place a button into the button clamp.
6. Check that the button carrier pin is aligned with the hole in the button when the button transport arm eis as far
forward as it can go (to the needle side).
* The alignment is correct if the pin goes into the hole in the button the pin when the button clamp is moved up and
down.
7. If the button carrier pin and hole are not aligned in the left-right direction, loosen the bolt tand move the entire
button feeder assembly to the right or left to adjust.
If they are not aligned in the forward-back direction, loosen the nut y, and move the connecting shaft uup or
down to move the button transport arm eforward or back.
After adjustment, press manual switch wand return button transport arm e.
* If the button transport arm eis not at the home position, error code [E61] may be displayed when the power is
turned off and back on again. Be sure to return the button transport arm eto the home position.
(Do not turn off the power while doing this.)
* When adjustment is completed, turn the pulley by hand to make sure the needle does not strike the button (needle
position adjustment).
8. After adjusting, turn off the power switch and then turn it back on again.
* Wait approximately 5 seconds after turning off the power switch before turning it back on again.
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10. Adjustment
10-16-6. Adjusting the needle location
Adjustment is required whenever the button carrier is replaced.
Make sure the needle is not bent.
■ Horizontal feed position
B
A
Button hole gap
Horizontal feed
Needle
1. Set the X scale so that the holes A and B in the button are aligned with the point of the needle. (Refer to “Setting
the X-scale and Y-scale” on page 45.)
2. Check the positions of the button holes. (Refer to “Checking the sewing pattern” on page 26.)
■ Vertical feed position
Vertical feed
Button hole gap
A
B
A~C
C
D
A~B
C~D
Button hole gap
Horizontal feed
1. Set the Y scale so that the holes A and C in the button are aligned with the point of the needle. (Refer to “Setting
the X-scale and Y-scale” on page 45.)
2. Check the positions of the button holes. (Refer to “Checking the sewing pattern” on page 26.)
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10. Adjustment
10-17. Replacement the V-belt
1. Then remove the belt cover.
(Refer to “Tilting back the machine head” on page 35).
2. Remove the motor back cover q with the screws w
and the flat washers e.
r
q
3. Remove the wood screw t and washers y securing
the motor cover r, and remove the table.
e
w
y
t
4. Gently tilt back the machine head, and then place the
V-belt uremove the V grooves on the machine head
pulley i and the motor pulley o.
i
NOTE:
After tilting back the machine head, do not push
the face plate side or the pulley side from above.
u
5. Gently return the machine head to its original position
replace V-belt.
* Be careful not to clamp the cords at this time.
o
6. 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.
Approx. 1
A
mm
B
7. 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 rigth pulley assem-
bly.
belt
Approx. 9 - 10 mm
10N
e
8. After adjustment, install the belt cover and the motor
cover.
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10. Adjustment
NOTE:
Use brother specified V-belt (belt, VM).
Sewing
machine
The V-belt 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 weak, this will be cause
of following problems;
•
Noise and vibration become large.
•
Needle up stop position becomes unstable.
•
Error message [E-5] is displayed.
V-belt
Check that the motor is positioned so that the V-belt
is straight. (Fig.1)
Motor
Fig.1
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10. Adjustment
10-18. Checking the input sensor and DIP switch input
PROGRAM NO.
P
P1 P2
P3 P4
POWER
RESET
q
-
X SCALE
e
w
-
Y SCALE
SPEED
r
TEST
COUNTER
SELECT
BOBBIN.WIND
t
1. When the X-SCALE indicator qis illuminated and the RESET switch eis pressed while the TEST switch wis
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 tis 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)
*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 rfor 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 wagain to return the display to the normal condition.
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10. Adjustment
10-19. Checking the input voltage
PROGRAM NO.
P
P1 P2
P3 P4
POWER
-
X SCALE
w
r
RESET
-
Y SCALE
SPEED
e
t
TEST
COUNTER
SELECT
BOBBIN.WIND
q
Specifications
200V
Display
Notes
[090 - 110]
[100 - 120]
[105 - 125]
220V
“100” is displayed when the input voltage is 200 V.
230V
100V
380V
400V
415V
“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.).
[100 - 120]
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 tas indicated in the
table above.
5. Press the TEST switch e again to return the display to the normal condition.
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10. Adjustment
10-20. Moving stitch patterns
• Programs which have already been programmed can be moved up, down and to the left and right. (However, 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.
w
u
i
r
t
e
y
SELECT
BOBBIN.WIND
o
q
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 oto 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 mechanism will
move to the left.
• If the DISPLAY SET ( ) switch is pressed while the X-SCALE indicator is illuminated, the feed mechanism will
move to the right.
• If the DISPLAY SET ( ) switch is pressed while the Y-SCALE indicator is illuminated, the feed mechanism will
move down.
• If the DISPLAY SET ( ) switch is pressed while the Y-SCALE indicator is illuminated, the feed mechanism 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 yis
flashing. The stitch pattern will not be moved at this time.
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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 quntil the COUNTER in-
dicator willuminates.
2. While pressing the TEST switch e, press the RESET
switch r.
* The COUNTER indicator wwill flash and the counter
will switch to bobbin thread counter setting mode.
3. Press the DISPLAY SET switches tto set the num-
ber of articles to be sewn.
• The bobbin thread counter can be set to sew a num-
ber of articles from one (“0001”) through to 9999
(“9999”).
If the bobbin thread counter is set to “0000”, sew-
ing is carried out without the number of articles sewn
being counted.
• If you press the RESET switch rwhile setting the
bobbin thread counter, the setting will return to
“0000”.
r
e
w
y
t
4. Press the TEST switch e.
q
* The number displayed in the display window ywill
then be stored as the bobbin thread counter setting.
5. Each time the sewing of a single article is completed, the number being displayed in the display window ywill
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.
11-2 .Using the production counter
The production counter can be displayed in the display window yseparately from the bobbin thread counter.
1. Press the SELECT switch quntil the SPEED indica-
tor willuminates.
2. While pressing the TEST switch e , press the RE-
SET switch r.
* The COUNTER indicator tand the SPEED indica-
tor wwill illuminate, and the production counter will
be displayed in the display window y.
• Press the RESET switch rto reset the production
counter to “0000”.
r
• 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 ma-
chine will start sewing.
4. If you press the TEST switch eor the SELECT switch
q, the display will return to showing the bobbin thread
counter.
w
t
e
y
u
q
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12. Using user programs
12.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-
!1
3 of the DIP switches qto ON.
PROGRAM NO.
P
P1 P2
P3 P4
POWER
RESET
-
X SCALE
2. Turn on the power switch.
!2
-
Y SCALE
While pressing the TEST switch w, press the SE-
LECT switch e.
SPEED
o
w
TEST
COUNTER
* 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.)
SELECT
BOBBIN.WIND
e
!
q
3. Press the SELECT switch e.
* The PROGRAM NO. indicator rwill illuminate.
4. Press the DISPLAY SET switches ! to select the number for the program that you would like to record.
5. Press the SELECT switch e. * The X-SCALE indicator twill illuminate.
6. Press the DISPLAY SET swithes ! to select the X scale setting that you would like to record.
7. Press the SELECT switch e. * The Y-SCALE indicator ywill illuminate.
8. Press the DISPLAY SET switches ! to select the Y scale setting that you would like to record.
9. Press the SELECT switch e. * The SPEED indicator uwill illuminate.
10. Press the DISPLAY SET switches !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 ( rto i) will all illuminate and “p1” will appear in the display to indicate that user program No.1 is currently selected.
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12. Using user programs
Using a user program
1. Press the DISPLAY SET switches !to select the speed program number for the user program that you would
0
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.20), 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 !to specify the user program number which is to be cleared of data.
3. Press the RESET switch !.
* The buzzer will sound and the user program with the number selected will be cleared.
* If you press and hold the RESET switch !until after the buzzer has sounded twice, all user programs will be
cleared.
2
2
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.
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13. Using the cycle sewing function
13. 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
q
1. Set DIP switch q-3 to ON, and then record the pat-
terns 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 45
for how to do this.)
B430E
Series
o
r
PROGRAM NO.
P
P1 P2
P3 P4
POWER
RESET
t
y
u
i
3. While pressing the TEST switch w, press the SE-
LECT switch e.
-
X SCALE
!
w
-
Y SCALE
* All of the menu indicators (rto i) will illuminate and the mode
will switch to recording mode.
SPEED
!
!
TEST
COUNTER
4. Press the P1 switch o.
• “Pc 1” will appear in the display window ! to indi-
SELECT
BOBBIN.WIND
0
0
cate that cycle sewing program No. 1 is being re-
corded.
e
* Programs P2, P3 and P4 switches can also be used for program-
ming.
5. Press the SELECT switch e. *The PROGRAM No. indicator rwill illuminate and “1- -” will appear in the display window !.
6. Press the DISPLAY SET switches ! to select the number for the user program that you would like to
1
record.
7. Press the SELECT switch e. *“2- -” will appear in the display window !.
0
8. Press the DISPLAY SET switches ! 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 (rto i) will all illuminate and “c1-1” will appear in the display window ! to indicate that the cycle sewing program
0
No.1 is currently selected.
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13. Using the cycle sewing function
Using a cycle sewing program
1. When “c1-1” is flashing in the display window !, 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 ! when “c1-*” is displayed, you can return to the previous stitch pattern or skip a stitch
1
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 oif you would like to clear cycle sewing program No. 1. (“Pc 1” will be displayed.)
3. Press the RESET switch !.
* The recorded contents of the specified cycle sewing program will then be cleared.
* If you press and hold the RESET switch !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.
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14. Changing functions using the DIP switches
14. Changing functions using the DIP switches
14-1. 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 shipment.
q
Switch
Motion when set to ON
Presser does not automatically lift after sewing is
completed.
DIPA-1
See “12-2. Setting the presser
mode”
DIPA-2
DIPA-3
DIPA-4
DIPA-5
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 38.)
DIPA-6
DIPA-7
DIPA-8
Enlargement of pattern size is not available.
Program number is fixed.
14-2. 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
ON
DIPA-2
Pedal specifications
Single pedal
Raising the presser at the sewing end
Presser is raised automatically.
Single pedal
Presser is raised by pressing the pedal.
Presser is raised automatically, then it is lowered by
pressing the pedal.
ON
ON
Two pedals
Two pedals
ON
Presser is kept lifted while the pedal is pressed.
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14. Changing functions using the DIP switches
14-3 . DIP switches inside the control box
DANGER
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.
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 shipment.
NOTE:
When opening the cover, hold it securely so that it does not
fall down.
q
Switch
DIPB-1
DIPB-2
DIPB-3
DIPB-4
DIPB-5
DIPB-6
Motion when set to ON
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.
DIPB-7
DIPB-8
Area checking of the sewing data is not carried out.
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15. Changing special functions using the memory switches
15. 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” (except “08”) 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.
q
* “00 - - ” will appear in the display window r.
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”.
PROGRAM NO.
P
P1 P2
P3 P4
POWER
RESET
-
X SCALE
y
-
Y SCALE
SPEED
r
* 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.
w
TEST
COUNTER
e
SELECT
BOBBIN.WIND
5. Press the TEST switch w .
* The display will return to normal.
t
15-1. 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.
ꢀMemory switches 00 - 0F
Switch
Motion when set to ON
At the end of sewing, the feed plate will be returned to the sewing start point via
mechanical home position.
memo-00
Button clamp will move to the sewing start point, and then will be lifted.
(The button clamp rises at the final stitch to enable the quick taking out of the workpieces.)
memo-01
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.)
memo-02
memo-03
memo-04
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.)
memo-05
memo-06
memo-07
memo-08 *
Increases the presser solenoid lifting force
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.)
memo-09
–
–
memo-0A
memo-0b
Needle stops in up position during emergency stop.
(EMERGENCY STOP switch is available as an option.)
memo-0c
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-0d
Test feeding will be performed at the same speed as that for actual sewing.
(This is used for checking feeding operation.)
memo-0E
memo-0F
After sewing is finished, the work clamp automatically opens and closes once
(practiceoperation).
* Set to ON at the time of shipment from the factory, and when all memory settings are initialized.
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15. Changing special functions using the memory switches
ꢀꢀMemory switches 10 - 1F
Switch
Motion when set to ON
memo-10
The optional emergency stop switch can be used.
—
memo-11 - memo-13
memo-14
Solenoid wiper can be used (available as an option).
—
memo-15
memo-16
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.
memo-17
memo-18
memo-19
memo-1A
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.)
memo-1b
memo-1c
memo-1d
—
—
Errors can be reset using the EMERGENCY STOP switch. (EMERGENCY STOP switch is
available as an option.)
memo-1E
memo-1F
Thread is not trimmed when an emergency stop occurs during sewing. (EMERGENCY STOP
switch is available as an option.)
ꢀꢀMemory switches 20 - 2F
Switch
Motion when set to ON
Machine head from previous B430E series is used. (Only the operation panel and box are Mark
II.)
memo-20
memo-21
memo-22
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.
memo-23
memo-24 - memo-2F
—
ꢀꢀ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
Possible setting range
Units
mm
Initial value
Explanation
Limits the maximum area in the horizontal direction (X)
(Limited to 6.4 mm when settings have been initialized.)
memo-30
0 - 30
7
Limits the maximum area in the vertical direction (Y)
(Limited to 6.4 mm when settings have been initialized.)
memo-31
memo-32
memo-33
0 - 30
12 - 27
1 - 15
mm
7
x 100rpm
x 7.5°
25
10
Changes the maximum sewing speed.
Changes the feed timing
1 (Fast) ¨10 (Standard) Æ15 (Slow)
The sewing speed at the sewing start is 400 rpm for the
specified number of stiches.
memo-34
0 - 5
Needle
1
memo-35
memo-36
3 - 9
x 100rpm
x10ms
4
0
Changes the sewing start speed specified by memo-34.
Timer for controlling timing during continuous operation
0 - 99
Changes the feed timing one stitch before the sewing end.
memo-37
memo-38
memo-39
1 - 20
1 - 20
1 - 20
x 7.5°
x 7.5°
x 7.5°
10
10
1
1 (Fast) ¨10 (Standard)Æ20 (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) Æ20 (Slow)
memo-3A
memo-3b
memo-3c
memo-3d
memo-3E
memo-3F
1 - 20
1 - 20
—
x 7.5°
x 7.5°
—
1
Changes the feed timing for the second stitch at the sewing start.
1
Changes the feed timing for the first stitch at the sewing start.
—
—
—
—
—
—
—
—
—
—
—
—
—
—
memo-40
-
memo-4F
—
—
—
—
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16. Table of error codes
16. Table of error codes
DANGER
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.
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
Cause
Remedy
Machine specification select connector is not Turn off the power and check if connectors P3 is
E-13
connected properly.
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.
Problem with machine motor stopping, or
synchronizer connection error.
E-20
Turn off the power and check the ground wire
connection.
E-21
E-30
E-31
Machine motor operation error.
Data is outside possible sewing area due to
enlargement ratio setting.
Press the RESET switch, and then set the enlargement
ratio again.
Stitch pattern data overlaps the sewing area
when area limiting is active.
Press the RESET switch, and then reset the memory
switches “30” and “31” or enlargement ratio.
The data format of the user program (% or
After changing the setting of DIP switch A-6, clear all
E-32
mm) does not match the setting of DIP switch memory settings. (Refer to “15-1. Clearing all memory
A-6.
settings”.)
Press the RESET switch, and then set the enlargement
ratio again.
E-40
E-41
E-42
Length of a stitch exceeds 10 mm.
If programming a new sewing data, repeat the
procedure from the beginning.
Abnormality in the sewing data.
Invalid program number specified.
Press the RESET switch and specify a correct number.
Turn the pulley to align the index mark with the needle
Needle bar does not stop when the needle is up stop position. (Refer to “10-12. Adjusting the needle
E-50
raised.
up stop position”.) Check the V-belt tension. (Refer to
“3-18. Installing the V-belt”.)
E-60
E-61
E-62
E-63
Presser has not been lowered.
Presser cannot be raised.
Presser is not raised.
Refer to “18. Troubleshooting”.
Turn off the power and check the connection of presser
sensor connector P1.
Presser cannot be lowered.
Turn off the power, and then check if the cooling fan is
blocked with scraps of thread.
E-70
E-80
E-81
Cooling fan does not operate.
Motor PROM is not correctly inserted.
Turn off the power and check.
Turn off the power and check.
Foot switch was depressed when the power
was turned on.
An operation panel switch was depressed
when the power was turned on.
Turn off the power and check the operation panel.
Check that all panel cords are normal.
E-82
E-90
E-91
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”.)
Abnormal drop in power supply voltage, or
power was turned on again immediately after
it was turned off.
Turn off the power and check the input voltage. (Refer
to “10-15. Checking the input voltage”.)
Abnormal rise in power supply voltage.
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16. Table of error codes
Code
Cause
Remedy
Home position cannot be detected
(malfunction of home position sensor), or
malfunction of power supply circuit board.
Turn off the power and check the connection of home
position sensor connector P1.
E-A0
E-b0
E-C3
Press the RESET switch.
Set DIP switch A-8 to OFF before trying to change the
program number.
You tried to change the program number
when DIP switch A-8 was set to ON.
Button attachment error
Remove the cause of the error at the robot.
G
G
Button feeding error
Press the MANUAL switch on the button feeder to
feed the buttons.
Refer to section 10-15.
Press the RESET switch to stop the buzzer from
G
G
Button blockage
G
G
Button feeder is in adjustment mode
sounding.
The error code display will not disappear until
adjustment mode has been canceled.
Heat sink of control circuit board is
abnormally hot.
Turn off the power and clean the air intake port of the
box.
E-d0
E-E0
Turn off the power, and turn it back on. If the error
continually occurs, contact a qualified service
technician.
Malfunction of EEPROM (malfunction of main
circuit board).
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.
Corrupted EEPROM data, or main PROM
version has been upgraded.
E-E1
E-E2
Press the RESET switch to reset the error. However,
the data (memory switches, display and user
programs) will all be initialized.
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).
Turn off the power and contact a qualified service
technician.
E-F0
Turn off the power and check if connectors P16 is
disconnected.
Bad connection in cable between power
supply circuit board and main circuit board.
E-F1
E-F2
Abnormal current detected in power supply
circuit board.
Turn off the power and contact a qualified service
technician.
GGErrors generated when optional equipment is connected
Code
Cause
Remedy
Turn the EMERGENCY STOP switch clockwise to
release the lock, and then press the RESET switch to
reset the error.
E-10
Emergency stop switch was pressed.
Turn the EMERGENCY STOP switch clockwise to
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 was pressed during
sewing.
E-11
E-12
E-14
Emergency stop switch is being continually
pressed, or emergency switch connection
error.
Turn off the power and check.
Turn the EMERGENCY STOP switch clockwise to
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.
Thread breakage detected.
REFERENCE
segment LED alphabet
Panel display
Text display
A
b
c
d
E
F
6
H
L
o
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17. Adjustment guide refer to this guide when different button are used
17. Adjustment guide refer to this guide when different button
are used
B
When button
hole gap (B)
changes
When button
diameter (D)
changes
When button
thickness (t)
changes
Page
t
D
Vibrating Bowl
Adjust button selector
Adjust button guide
Adjust height control plate
Adjust button adjustment dial
Shoot Coil assy
Replace the shoot coil
Button Slide Base
Adjust slide base width
Adjust the stopper
Replace the button top cover
Replace the spacer (S)
Button Catch Plate
Replace the button carrier
Feeder Installation
Position
Adjust right/left needle and
button carrier pin positions
Machine Head
Adjust button clamp width
Adjust needle location
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18. Troubleshooting
18. Troubleshooting
Problem
Cause
Check
Remedy
Page
Distance between
button clamp and top
of needle plate
Adjust the height of the
button clamp to within
13 mm.
Button clamp lifter
46
48
amount is too great.
Button clamp does not
rise.
Adjust the position of
the thread wiper.
Presser is contacting
thread wiper.
Thread wiper standby
position
Button clamp does not
drop.
Presser lifter link is not
moving back.
Link return spring is
unhooked.
Hook the link return
spring properly.
Incorrect position of
button clamp holder
hook assembly
Distance between
button clamp and top
of needle plate
Button clamp lift
Adjust the button
clamp lift amount.
46
amount is incorrect.
Clearance between
thread wiper and
needle tip
Adjust the height of the
thread wiper.
The thread wiper is
48
48
obstructing the needle.
Thread wiper does not
operate correctly.
Adjust the operating
distance of the thread
wiper.
Thread wiper position
is incorrect.
Thread wiper position
Bobbin winder thread
tension stud height is
incorrect.
Lower thread winds to
one side.
Bobbin winder thread
tension stud height
Adjust the height of the
thread tension stud.
29
29
Lower thread winding
amount is incorrect.
Bobbin presser
Thread winding
amount
Adjust the position of
the bobbin presser.
position is incorrect.
Stitches being skipped
at the sewing start.
Refer to "Skipped
stitches occur".
Refer to "Skipped
stitches occur".
Threads comes
unthreaded.
Uneven upper thread
length.
Upper thread length
Adjust the sub-tension.
29
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18. Troubleshooting
Problem
Cause
Check
Remedy
Page
Upper thread tension
is too strong.
Adjust the upper thread
tension.
Upper thread tension
Needle direction
27
27
27
29
Install the needle so
that the groove is facing
forward.
Needle is installed
incorrectly.
Thread is too thick for
the needle.
Use the correct thread
for the needle.
Thread and needle
Upper thread breaks.
Thread takeup spring
tension and height are
incorrect.
Adjust the tension and
height of the thread
takeup spring.
Thread takeup spring
tension and height
Damaged or burred
rotary hook, needle
hole plate or needle
File smooth or replace
the affected part.
Damage or burring
Lower thread tension
is too strong.
Adjust the lower thread
tension.
Lower thread tension
Damage
28
Lower thread breaks.
Corners of needle hole
plate or bobbin case
are damaged.
File smooth or replace
the affected part.
Clearance between
needle and rotary hook
tip is too great.
Adjust the needle
clearance.
Needle clearance
42
41
42
Incorrect needle and
rotary hook timing
Adjust the needle bar lift
amount.
Needle bar lift amount
Driver is contacting
needle more than is
necessary.
Clearance between
driver and needle
Adjust the driver needle
guard.
Skipped stitches occur.
Needle is bent.
Bent needle
Replace the needle.
Install the needle so
that the groove is facing
forward.
Needle is installed
incorrectly.
Needle direction
27
Adjust so that the
Needle is striking the
button.
Needle down setting
Needle clearance
needle drops down into
the hole of the button.
40,46
42
Adjust the needle
clearance.
Needle is touching the
rotary hook.
Adjust the needle bar
lift amount.
Needle bar lift amount.
Bent needle
41
Needle breaks.
Needle is bent.
Wayward stitches
Needle is too thin.
Replace the needle.
Adjust the needle
down detection
position.
Needle and feed
timing
52
Use the correct needle
for the material.
Needle and thread
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18. Troubleshooting
Problem
Cause
Check
Remedy
Page
Sharpen or replace the
fixed knife.
Fixed knife is blunt.
Fixed knife blade
Adjust the position of
the shuttle race thread
guide.
Shuttle race thread
guide position
43
41
Movable knife does
not pick up the thread.
Adjust the needle bar lift
amount.
Needle bar lift amount
Upper thread is not
trimmed.
The movable knife does not pick
up the thread because of skipped
stitches at the sewing end.
Skipped stitches at
sewing end
Refer to "Skipped
stitches occur".
Movable knife position
is incorrect.
Adjust the position of
the movable knife.
Movable knife position
Sub-tension
45
27
Turn the sub-tension
nut to adjust the
tension.
Sub-tension is too weak.
Adjust the tension and
height of the thread
takeup spring.
Thread takeup spring
tension and height are
incorrect.
Thread takeup spring
tension and height
30
41
43
Adjust the needle bar
lift amount.
Incorrect needle and
rotary hook timing
Needle bar lift amount
Thread jamming
Shuttle race thread
guide is not separating
the threads.
Adjust the position of
the shuttle race thread
guide.
Shuttle race thread
guide position
Shuttle race thread
guide is not separating
the threads.
Adjust the position of
the shuttle race thread
tension.
Shuttle race thread
guide position
43
29
27
Upper thread is not
properly tight.
Poor seam finish on
Adjust the upper
thread tension.
Upper thread tension
Upper thread length
reverse side of material.
Uneven upper thread
length
Adjust the sub-tension.
Upper thread tension
is too weak.
Adjust the upper
thread tension.
Upper thread tension
Lower thread tension
29
29
30
Lower thread tension
is too weak.
Incorrect thread
tightness
Adjust the lower thread
tension.
Adjust the tension and
height of the thread
takeup spring.
Thread takeup spring
tension and height are
incorrect.
Thread takeup spring
tension and height
Adjust so that the
needle drops into the
hole of the button.
Needle is striking the
button.
Button breaks.
Needle down setting
40,46
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INSTRUCTION MANUAL
BROTHER INDUSTRIES, LTD.
15-1, Naeshiro-cho, Mizuho-ku, Nagoya 467-8561, Japan. Phone: 81-52-824-2177
Printed in Japan
151-916
S93V48-002
2000.06. H (1)
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