JUKI LK-1900AN, LK-1901AN, LK1902AN, LK-1903AN, LK-1903AN-305 Instruction Manual
ENGLISH
LK-1900AN
LK-1901AN LK-1902AN
LK-1903AN LK-1903AN-305
INSTRUCTION MANUAL
CONTENTS
. EXPLANATION OF LK-1900AN, COMPUTER-CONTROLLED HIGH-SPEED
BARTACKING MACHINE .............................................................................................. 1
[1] SPECIFICATIONS .....................................................................................................................................1
[2] CONFIGURATION .....................................................................................................................................2
1. Names of main unit ................................................................................................................................................ 2
2. Names and explanation of switches on the operation panel ............................................................................3
[3] INSTALLATION .........................................................................................................................................4
1. Installing the electrical box...................................................................................................................................4
2. Attaching the connecting rod ............................................................................................................................... 4
3. Installing the head support rod ............................................................................................................................ 4
4. Installing and connecting the power switch .......................................................................................................5
5. How to carry the sewing machine ........................................................................................................................ 6
6. Installation of the sewing machine head ............................................................................................................. 6
7. Installing the drain receiver and the head support rubber ................................................................................ 7
8. Safety switch ..........................................................................................................................................................7
9. Tilting the sewing machine head .........................................................................................................................8
10. Installing the operation panel ............................................................................................................................... 8
11. Connecting the cord .............................................................................................................................................. 9
12. Managing the cord ...............................................................................................................................................10
13. Installing the eye protection cover .................................................................................................................... 11
14. Installing the thread stand .................................................................................................................................. 11
[4] OPERATION OF THE SEWING MACHINE ............................................................................................12
1. Lubrication ...........................................................................................................................................................12
2. Attaching the needle ...........................................................................................................................................12
3. Threading the machine head .............................................................................................................................. 13
4. Installing and removing the bobbin case .......................................................................................................... 13
5. Installing the bobbin ............................................................................................................................................14
6. Adjusting the thread tension .............................................................................................................................. 14
7. Adjusting the thread take-up spring .................................................................................................................. 15
8. Example of the thread tension ...........................................................................................................................15
[5] OPERATION OF THE SEWING MACHINE (BASIC) ..............................................................................16
1. Item data setting ..................................................................................................................................................16
2. Checking the contour of a sewing pattern ........................................................................................................ 18
3. Sewing ..................................................................................................................................................................19
4. Change to the other sewing pattern ..................................................................................................................19
5. Winding a bobbin .................................................................................................................................................20
6. Thread clamp device ...........................................................................................................................................21
[6] OPERATION OF THE SEWING MACHINE (ADVANCED) .....................................................................23
1. Performing sewing using the pattern keys ( , , , and ) ........................................ 23
2. Performing sewing using the combination function ........................................................................................ 26
3. Performing sewing using the “bobbin thread counter” ...................................................................................28
4. How to use the temporary stop .......................................................................................................................... 28
5. Setting the pattern thread tension .....................................................................................................................29
6. Cautions in operation .......................................................................................................................................... 30
[7] MAINTENANCE ......................................................................................................................................30
1. Adjusting the height of the needle bar ..............................................................................................................30
2. Adjusting the needle-to-shuttle relation ............................................................................................................ 31
3. Adjusting the lift of the work clamp foot ........................................................................................................... 32
4. The moving knife and counter knife ..................................................................................................................32
5. Needle thread clamp device ...............................................................................................................................33
6. Adjustment of the wiper ...................................................................................................................................... 33
7. Draining waste oil ................................................................................................................................................34
8. Amount of oil supplied to the hook ...................................................................................................................34
9. Replacing the fuse ............................................................................................................................................... 34
i
10. Changing the voltage of 100/200V .....................................................................................................................35
11. Replenishing the designated places with grease ............................................................................................. 36
[8] HOW TO USE THE MEMORY SWITCH ..................................................................................................37
1. Start and change of the memory switch ............................................................................................................ 37
2. Example of the memory switch setting ............................................................................................................. 37
3. Table of functions of the memory switch ..........................................................................................................41
[9] OTHERS ..................................................................................................................................................44
1. Setting the DIP switch ......................................................................................................................................... 44
2. Tableofthestandardpatternspecications ....................................................................................................45
3. Table of the standard patterns ...........................................................................................................................46
4. Table of the work clamp foot ..............................................................................................................................48
5. LK-1900 data ROM ............................................................................................................................................... 50
6. Connection of the optional pedal ....................................................................................................................... 50
7. Error list ................................................................................................................................................................ 51
8. Troubles and corrective measures (sewing conditions)..................................................................................54
9. Table of the optional parts ..................................................................................................................................56
. EXPLANATION OF THE LK-1901AN, COMPUTER-CONTROLLED HIGH-SPEED
Ⅱ
EYELET BUTTONHOLE BARTACKING MACHINE ...................................................58
1. Specications ......................................................................................................................................................58
2. Installation of the sewing machine and preparation of the operation ............................................................ 58
3. Adjustment of the material closing amount ...................................................................................................... 59
4. Adjustment of the lift of the work clamp foot ................................................................................................... 59
5. Adjustment of the pressure of the work clamp unit ......................................................................................... 60
6. Setting of the material closing operation .......................................................................................................... 60
7. Selectionandconrmationofthesewingpatterns .........................................................................................61
. EXPLANATION OF THE LK-1902AN, COMPUTER-CONTROLLED HIGH-SPEED
Ⅲ
BELT-LOOP ATTACHING MACHINE .......................................................................... 62
1. Specications ......................................................................................................................................................62
2.
Installation of the sewing machine and preparation of the operation ..................................................................... 62
3. Threading the machine ....................................................................................................................................... 62
4. Selectionandconrmationofthesewingpatterns .........................................................................................63
5. Combination of the work clamp foot and the feed plate .................................................................................. 63
. EXPLANATION OF THE LK-1903AN, COMPUTER-CONTROLLED HIGH-SPEED
Ⅳ
LOCKSTITCH BUTTON SEWING MACHINE .............................................................64
1. Specications ......................................................................................................................................................64
2. Installation of the sewing machine and preparation of the operation ............................................................ 64
3. Needle and thread ................................................................................................................................................ 64
4. Various sewing modes ........................................................................................................................................ 65
5. Position of the button clamp jaw lever .............................................................................................................. 66
6. Adjusting the feed plate ...................................................................................................................................... 67
7. Adjusting the button clamp jaw lever ................................................................................................................ 67
8. Adjusting the lifting amount of the button clamp ............................................................................................. 68
9. Adjustment of the pressure of the work clamp unit ......................................................................................... 68
10. Adjustment of the wiper spring .......................................................................................................................... 69
11. Installing the save button bar (accessory part) ................................................................................................ 69
12. Modelclassicationaccordingtothebuttonsize ............................................................................................70
13. Attaching the shank botton (optional) ............................................................................................................... 71
. DRAWING OF THE TABLE
Ⅴ
......................................................................................... 75
ii
. EXPLANATION OF LK-1900AN, COMPUTER-CONTROLLED HIGH-
SPEED BARTACKING MACHINE
[1] SPECIFICATIONS
1 Sewing area X (lateral) direction 40 mm Y (longitudinal) direction 30 mm
2 Max. sewing speed
3 Stitch length 0.1 to 10.0 mm (adjustable in 0.1 mm step)
4 Feed motion of work clamp foot Intermittent feed (2-shaft drive by stepping motor)
5 Needle bar stroke 41.2 mm
6 Needle DP x 5, DPx17
7 Lift of work clamp foot 13 mm (standard) Max. 17 mm
8 Shuttle Standard semi-rotary hook (oil wick lubrication)
9 Lubricating oil New Defrix Oil No. 2 (supplied by oiler)
10 Data recording EEPROM (128Kbyte) EPROM (32kbyte)
11 Enlarging / Reducing facility 20% to 200% (1% step) in X direction and Y direction respectively
12 Enlarging / Reducing method
13 Max. sewing speed limitation 400 to 3,200 sti/min* (100 sti/min steps)
3,200 sti/min* (When sewing pitches are less than 5 mm in X-direction
and 3.5 mm in Y -direction.)
Pattern enlargement / reduction can be done by increasing/decreasing
the stitch length
14 Pattern selection Specifying pattern No. type (1 to 200)
15 Bobbin thread counter UP/DOWN type (0 to 9999)
16 Sewing machine motor Servo motor
17 Dimensions
18 Weight Machine head 42 kg, Control box 16.5 kg
19 Power consumption 450 VA (Pattern No. 1, 3,200 sti/min, 1-sec pause time)
20 Operating temperature range 5 ˚C to 35 ˚C
21 Operating humidity range 35% to 85% (No dew condensation)
22 Line voltage Rated voltage ± 10% 50/60 HZ
23 Noise - Equivalent continuous emission sound pressure level (LpA) at the
W : 1,200 mm L : 660 mm H : 1,100 mm
(Use the standard table and stand.)
workstation :
A-weighted value of 82.5 dB; (Includes KpA = 2.5 dB); according to
ISO 10821- C.6.3 -ISO 11204 GR2 at 3,200 sti/min
cycle, 1.0s ON (Pattern : No.1).
- Sound power level (LWA) ;
A-weighted value of 90.5 dB; (Includes KWA = 2.5 dB); according
to ISO 10821- C.6.3 -ISO 3744 GR2 at 3,200 sti/min
cycle, 1.0s ON (Pattern : No.1).
for the sewing
for the sewing
* Reduce the max. sewing speed in accordance with the sewing conditions.
Max. sewing speed of LK-1900ANWS (double capacity hook) is 2,700 sti/min.
1
[2] CONFIGURATION
1. Names of main unit
Machine head
Work clamp feet
Thread stand
Operation panel
Power switch
Control box
Pedal switch
Power switch
(EU type)
2
2. Names and explanation of switches on the operation panel
“Ready” key
This key changes over the setting state from the
panel to the sewing state where the sewing machine actually operates.
Sewing LED
This LED goes off at the time of setting state and
lights up at the time of sewing state. Changeover
can be performed with “Ready” key.
“Reset” key
This key is used for canceling error or returning
the set value to the initial value.
“Mode” key
This key makes the setting mode of the memory
switch.
“+/Feed forward” key and “-/Feed backward” key
This key is used for changing pattern No. and X/
Y scale, and feed forward/feed backward.
“Selection” key
This key selects the item to be set. Item selec-
tion LED of the selected item and the set value
are displayed.
Data indication LED
This LED indicates the set values of the select-
ed items such as pattern No., X/Y scale, etc.
Item selection LED
LEDs of the selected items light up.
Pattern No.
Max. speed
limitation
Work clamp
foot lowering
Needle thread clamp ON/OFF key
X scale
Sewing
counter
Thread
tension
Y scale
Bobbin
winder
This key selects effective/ineffective of needle
thread clamp. When it is effective, needle thread
clamp display LED lights up.
Needle thread clamp display LED
(Note 1)
When this LED lights up, needle thread clamp
operates.
Needle thread clamp display LED
This key registers the pattern. When this key is
pressed, the pattern registered here can sew
immediately.
X/Y scale, sewing position, etc. can be changed
and registered.
(Note 1) LK-1903AN is set to needle thread clamp prohibited (no motion) with memory switch No. 35
at the time of standard delivery.
3
[3] INSTALLATION
1. Installing the electrical box
2. Attaching the connecting rod
Install the electrical box on the underside of the table
at the location illustrated using round-head bolt ,
plain washer , spring washer and nut sup-
plied with the machine, and using bolt having hexag-
onal indentation on the head , spring washer
and plain washer supplied with the machine.
1) Fix connecting rod to installing hole of pedal
lever with nut .
2)
when connecting rod is installed in installing hole
, the depressing stroke of the pedal is increased.
3. Installing the head support rod
Drive head support rod in hole in the machine
table.
4
4. Installing and connecting the power switch
(1) Installing the power switch
Fix power switch under the machine table with
(2) Connecting the power source cord
Voltage specications at the time of delivery from the factry are indicated on the voltage indication seal.
Connect the cord in accordance with the specications.
Voltage caution seal
wood screws .
Fix the cable with staples supplied with the machine
as accessories in accordance with the forms of use.
* Five staples including the staple for fixing the
operation panel cable are supplied as accessories.
1. Never use under the wrong volt-
age and phase.
2. When changing the voltage, refer
to the item of ".[7]-10. Chang-
ing the voltage of 100 / 200V" p.35.
Voltage indication seal (3-phase type only)
Rating label
• Connecting single phase 200V, 220V, 230V and 240V
Light blue
Table
Control box
Green/Yellow
Brown
Light blue
Brown
Green/Yellow
Plug
Power switch
• Connecting three phase 200V, 220V and 240V
Table
Control box
Green/Yellow
Black
White
Red
Black
White
Red
Power switch
Green/Yellow
Plug
Power source cord
Power source cord
Brown
Light
blue
Green/
Yellow
White
Black
Red
Green/
Yellow
AC200 V
AC220 V
AC230 V
AC240 V
GND
AC200 V
AC220 V
AC240 V
GND
5
5. How to carry the sewing machine
A
To carry the sewing machine, it is necessary to hold A section and support the side faces of the sewing
machine by hand as illustrated in the gure.
1. Carefully prevent slippage of your hand that holds the cover.
2. The sewing machine weighs over 42 kg. Be sure to carry the sewing machine with two
or more people without exceptions.
6. Installation of the sewing machine head
WARNING :
To prevent possible accidents caused by the full of the sewing machine, perform the work by two
persons or more when the machine is moved.
1) Fit hinge rubber to the hinge shaft ,and x the
sewing machine main unit.
2) When tightening nut to hinge rubber , tight-
en nut until spring washer becomes as B in
the illustration, and x it with nut .
If tightening hinge rubber excessively,
it will not work properly. So, be careful.
When carrying the sewing machine, hold
sections with hands to support the
side faces of the sewing machine.
6
A
B
7. Installing the drain receiver and the head support rubber
1) Fix drain receiver in the installing hole of table
with two setscrews .
2) Screw in drain bin to drain receiver .
3) Insert sewing machine drain pipe into drain bin
.
4) Insert head support rubber into table .
1. Insert drain pipe until it will go no
further so that it does not come off
drain bin when tilting the machine
head.
2. Removethetapexingdrainpipe.
8. Safety switch
Remove tape xing the lever section of safety switch .
1. When using the safety switch without removing tape , it is very dangerous since the
sewing machine works even in the state that it is tillted.
2. In case error 302 occurs when the sewing machine works after setup, loosen the safe-
tyswitch ttingscrewwithascrewdriver,and lowertheswitchtothedownside ofthe
sewing machine.
7
9. Tilting the sewing machine head
WARNING :
Tilt/raisethesewingmachineheadwithbothhandstakingcarenottoallowyourngerstobecaught
in the head. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt
start of the sewing machine.
When tilting the sewing machine head, tilt the head
gently until it comes in contact with head support rod
.
1. Before tilting the sewing machine
head, make sure that head support rod
is attached to the machine table.
2. When raising the sewing machine
head, do not raise it while holding
motor cover . It will be the cause of
breakage of motor cover .
3.
Be sure to tilt the sewing machine head
onaatplacetopreventitfromfalling.
10. Installing the operation panel
Fix operation panel installing plate on the ma-
chine table with wood screws and pass the cable
through hole in the machine table.
Fix the operation panel on panel installing plate
with screws supplied as accessories.
Fix the cable on the bottom surface of the table with
the staples supplied with the machine as accessories.
Refer to the gure on the left side when installing the
panel under the table.
8
11. Connecting the cord
Slowly
Remove four screws E fixing the rear cover of the
electrical box. When opening the rear cover, press-
ing it with your hands, slowly open it by approximate-
ly 90˚ until it stops as illustrated.
Be sure to lend your hand to the rear
cover in order not to let the rear cover
fall. In addition, do not apply force to the
rear cover opened.
CN16 White
CN16
CN14
CN39
CN42
CN43
CN44
CN45
CN40
CN47
(LK-1901AN)
CN38
CN34
CN14 White
4P
9P
2P
6P
6P
6P
6P
4P
2P
16P
26P
White
White
Yellow
White
Blue
Red
Yellow
White
White
Gray
Gray
Sewing machine head
Operation panel
Earth cord
CN34 Gray
CN45
Yellow
CN47
White
CN40
White
CN38 Gray
CN44 Red
CN42 White
CN43 Blue
9
CN39 Yellow
1) Take care so that the cord is not caught between
the rear cover and the electrical box main body,
close the rear cover while pressing section A on
the lower side of the rear cover, and tighten four
C
screws .
2) Lower downward the cord located on the side of
the control box and cord presser plate C in the
B
A
push hole B, press the cord and tighten screws .
How to lock the cord clamp
Lightly press the corner of clamp.
(Cord clamp is locked with a click.)
12. Managing the cord
Clamp
How to remove the cord clamp
Lightly pressing
Pull down the clamp.
The clamp goes up.
Slack
1) In the state that the sewing machine is tilted, connect the cords, and bundle them with clip band
as shown in the gure.
2) Fix the cords with cords setting plate in the state that the cords slacken as shown in the gure.
When you tilt the sewing machine, make sure that the sewing machine head support bar is
placed on the table.
10
13. Installing the eye protection cover
WARNING :
Be sure to attach this cover to protect the eyes from the disperse of needle breakage.
14. Installing the thread stand
Be sure to use eye protection cover after installing
it on installing section with screws .
1) Assemble the thread stand unit, and insert it in
the hole in the machine table.
2) Tighten locknut to x the thread stand.
3) For ceiling wiring, pass the power cord through
spool rest rod .
11
[4] OPERATION OF THE SEWING MACHINE
1. Lubrication
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
Check that the place between lower line B and upper
line A is lled with oil. Fill there with oil using the oiler
supplied with the machine as accessories when oil is
short.
* The oil tank which is lled with oil is only for lubri-
cating to the hook portion. It is possible to reduce
the oil amount when the number of rotation used
is low and the oil amount in the hook portion is
A
B
excessive. (Refer to
supplied to the hook" p.34
1. Do not lubricate to the places other
2. When using the sewing machine for
".[7]-8. Amount of oil
.)
than the oil tank and the hook of Cau-
tion 2 below. Trouble of components
will be caused.
thersttimeorafteranextendedpe-
riod of disuse, use the machine after
lubricating a small amount of oil to
the hook portion. (Refer to ".[7]-2.
Adjusting the needle-to-shuttle rela-
tion" p.31.)
2. Attaching the needle
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
Loosen setscrew and hold needle with the long
groove facing toward you. Then fully insert it into
the hole in the needle bar, and tighten setscrew .
If the stitches are made as shown in ,
attach the needle facing to the direction
to a small extent.
12
3. Threading the machine head
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
Thin synthetic thread or the like
Pull out the thread by approximately 40mm from the needle after threading through the needle.
1. When the silicon oil is used, thread through thread guide for silicon (Optional)
2. For thick thread, pass the thread through one hole only of needle bar thread guide .
4. Installing and removing the bobbin case
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
1) Open hook cover .
2) Raise latch of bobbin case , and remove the
bobbin case.
3) When installing the bobbin case, fully insert it into
the shuttle shaft, and close the latch.
If it is not fully inserted, bobbin case
may slip off during sewing.
13
5. Installing the bobbin
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
25mm
1) Set the bobbin into bobbin case in the di-
rection shown in the gure.
2) Pass the thread through thread slit of bobbin
case , and pull the thread as it is. By so doing,
the thread will pass under the tension spring and
be pulled out from thread hole .
3) Pass the thread through thread hole of the
horn section, and pull out the thread by 25mm
from the thread hole.
If the bobbin is installed in the bobbin
case orienting the reverse direction, the
bobbin thread pulling out will result in
an inconsistent state.
6. Adjusting the thread tension
Long
Short
Adjusting the needle thread tension
If thread tension controller No. 1 is turned clock-
wise, the length of remaining thread on the needle
after thread trimming will be shorter. If it is turned
counterclockwise, the length will be longer.
Shorten the length to an extent that the thread is not
slipped off.
Adjust needle thread tension from the operation pan-
el and bobbin thread tension with .
1) Select thread tension with key.
2)
Set needle thread tension with key or
key. There is a setting range of 0 to 200. When the
set value is increased, the tension becomes higher.
* The tension is set so that 1.5 N (spun thread
#50) is obtained at the set value 50 at the time
of standard delivery. (When thread tension No.
1 is released.)
14
7. Adjusting the thread take-up spring
8. Example of the thread tension
The standard stroke of thread take-up spring is 8
to 10 mm, and the pressure at the start is 0.1 to 0.3N.
1) Adjusting the stroke
Loosen setscrew , and turn thread tension
asm. .
Turning it clockwise will increase the moving
amount and the thread drawing amount will in-
crease.
2) Adjusting the pressure
To change the pressure of the thread take-up
spring, insert a thin screwdriver into the slot of
thread tension post while screw is tightened,
and turn it. Turning it clockwise will increase the
pressure of the thread take-up spring. Turning it
counterclockwise will decrease the pressure.
When using the sewing machine for the rst time, adjust the thread tension referring to the table below.
Thread
Polyester lament thread #50
Polyester spun thread #50
Polyester spun thread #60
(Thread clamp OFF)
Cotton thread #50
Cotton thread #20
Material
Wool
Wool
T/C broad
Denim
Denim
Needle thread tension
setting
30 to 35
50 to 55
30 to 35
35 to 45
35 to 45
Thread take-up spring moving
amount [Thread drawing amount]
10mm [13mm]
10mm [13mm]
8 to 10mm [11 to 13mm]
10mm [13mm]
8 to 10mm [11 to 13mm]
Strength
0.1N
0.2N
0.1N
0.1N
0.1N
15
[5] OPERATION OF THE SEWING MACHINE (BASIC)
1. Item data setting
Set each item following the procedure described below.
Setting of the
pattern No.
(1) Turn ON the power switch.
Pattern No. of the item selection lights up, and the pattern No. is indicated on the data display.
(2) Setting of the pattern No.
Setting of the
X scale
Setting of the
Y scale
1) Press the key to indicate the item “Pattern
2) Press the or key to indicate “ 14 ”on
NO” .
the display. (Pattern No. is set to 14.)
Setting of the
max. sewing
speed limitation
Refer the pattern No. to the separate table.
(3) Setting of the X scale
Setting the
thread tension
(4) Setting of the Y scale
1) Press the key to indicate the item “X Scale”
.
2) Press the or key to indicate “100”.
(Set X scale to 100%.)
The setting exceeding 100% is danger-
ous since needle and the cloth presser
interferes with each other and needle
breakage or the like will occur.
1) Press the key to indicate the item “Y Scale”
.
2) Press the or key to indicate “100”.
(Set Y scale to 100%.)
The setting exceeding 100% is danger-
ous since needle and the cloth presser
interferes with each other and needle
breakage or the like will occur.
16
(5) Setting of the max. sewing speed limitation
(6) Setting the thread tension
1) Press the key to indicate the item “Speed”
.
2) Press or key to indicate “400”. (Setting of 400 sti/min)
1) Press key to indicate the item “THREAD
TENSION” .
2) Press or key to indicate “50”. (0 to
200 can be set.)
(7) Finish of setting
1) Press the key.
2) After the work clamp feet have moved and gone
up, the sewing LED lights up, and the sewing is
* When key is pressed, the set values of pattern No., X/Y scale, etc. are memorized.
* If key is pressed, you can make sure of the respective setting items again. However, the items
can not be changed in the state that the SEWING LED is lit up.
*
When key is pressed, the READY LED goes off. Set values of the respective items can be changed.
* Thread tension can be changed even when the sewing LED lights up. Thread tension can be mom-
orized with the start switch as well.
ready.
When the presser is raised, be careful that
ngersarenotcaughtinthepressersince
the presser moves after having lowered.
* Use the machine after conrming the pattern No. When key is pressed while pattern No. is indicat-
ed "0" (state at the time of delivery), error display E-10 appears. At this time, re-set the pattern No.
When turning OFF the power without pressing key, the set values of pattern No., X/
Yscale,numberofmax.rotation,andthreadtensionarenotmemorized.
17
2. Checking the contour of a sewing pattern
WARNING :
2. When making sure of the contour of the sewing pattern, press + / - key with the needle bar lowered,
1. Make sure without fail of the contour of the sewing pattern after selection of the sewing pattern.
If the sewing pattern extends outside the work clamp feet, the needle will interfere with the work
clamp feet during sewing, causing dangerous troubles including needle breakage.
and the work clamp feet move after automatically making the needle bar return to the upper position.
1)
Press key to make the READY LED light up.
2) Select the work clamp foot lowering with
key.
3) Lower the work clamp feet with the foot switch.
⇩
The sewing machine does not start
even when the foot switch is de-
pressed under this mode.
4) Press key in the state that the work clamp
feet are lowered.
❷
10mm
⇩
➡
Clearance
❶
Needle
The work clamp feet do not go up even
when the foot switch is detached.
5) Conrm the contour of the pattern with key
or key.
6) The work clamp feet will go up when key is
pressed.
The work clamp feet do not come
down immediately after turning ON
the power.
(Caution) When using a sewing pattern which is
full in lengthwise direction (+10 mm),
make sure of the clearance between
cloth feed base ❷ and wiper base ❶.
If there is no clearance, loosen set-
screw ❸ and move the wiper to the
needle side. Especially when the nee-
dle position comes to the rear on the
right side, the clearance is decreased.
❶
❸
Clearance
❷
－
18
－
3. Sewing
4. Change to the other sewing pattern
1) Set a workpiece on the work clamp foot section.
2) Depress the pedal switch to the rst step, and the
work clamp feet will come down. If you detach
your foot from the pedal switch, the work clamp
feet will go up.
3) Depress the pedal switch to the second step after
descending the work clamp feet at the rst step,
and the sewing machine will start sewing.
4) After the sewing machine completes sewing, the
work clamp feet will go up, and return to the sew-
ing start position.
1) Make the Sewing LED go off with key.
2) Press key and select the item of pattern
No .
3) Set the pattern No. with key or key
4) Similarly, setting of X/Y scale, speed, etc. is per-
formed.
5) When key is pressed, the Sewing LED
lights up and the sewing machine is in the sewing
ready state.
WARNING :
Make sure without fail of the contour of the sewing pattern after selection of the sewing pattern.
If the sewing pattern extends outside the work clamp feet, the needle will interfere with the work
clamp feet during sewing, causing dangerous troubles including needle breakage.
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5. Winding a bobbin
5-1. To wind a bobbin while the sewing machine is performing sewing
Thread the bobbin winder and wind the bobbin
thread onto the bobbin as illustrated in the gure.
5-2. To wind a bobbin independently
1) Press key to make the SEWING LED go
off.
2) Select the bobbin winder with key.
Selection cannot be performed when the
Sewing LED is lit up.
3) Press key. The work clamp feet come
down and the Sewing LED lights up.
4) When the pedal switch is depressed, the sewing
machine rotates.
5) When the pedal is depressed again, or key or
key is pressed, the sewing machine stops.
6) When key is pressed, the Sewing LED
goes off, the work clamp feet go up and
key becomes effective.
Bobbin winder does not work immediate-
ly after turning ON the power. Perform the
bobbin winding after setting pattern No.
or the like once, pressing the key,
and making the sewing LED light up.
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6. Thread clamp device
Trouble of sewing (slip-off of needle thread, stitch skipping, or stain of needle thread) at the time of high-
speed start can be prevented with the thread clamp device. The thread clamp device works in the state
that the thread clamp indication LED lights up and does not work when the LED goes off. Changeover of
ON/OFF motion is performed with key. When the thread clamp device is OFF, the start automatically becomes the slow start.
1. When memory switch No. 35 is "1" (prohibited), the thread clamp does not work. In ad-
dition, key is ineffective.
2. Memory switch, refer to ".[8] HOW TO USE THE MEMORY SWITCH" p.37.
* Matters that demand special attention when using the needle thread clamp device
(1) In case of with the needle thread clamp (motion), make shorter the length of needle thread remaining on
the needle at the sewing start for use. When the length of needle thread is lengthened, needle thread on
the wrong side of material is apt to protrude. In addition, when the length is excessively lengthened, the
end of needle thread held by the needle thread clamp may be rolled in the seams.
1)
33 to 36mm
3)
1) In case of with the needle thread clamp, the stan-
dard of the length of needle thread is 33 to 36
mm.
2)
When needle thread is long after replacing thread
or the like or sewing while holding needle thread by
hand, turn OFF the THREAD CLAMP key.
3) When the needle thread held with the thread
clamp is rolled in the seams, do not draw the
material forcibly and cut the connecting needle
thread with the scissors or the like. The seams
are not damaged since it is the needle thread at
the sewing start.
(2) It is possible to adjust needle thread shorter by making the needle thread clamp work while holding the
stabilized sewing at the start of sewing and the gathering (bird's nest) of needle thread on the wrong side
of material can be lessened. However, for the pattern which the stitch length for neatly rolling in needle
thread is short, needle thread may protrude from the wrong side of material. Select with/without thread
clamp referring to the item below.
1) When the sewing length is short (less than ap-
(Right side)
proximately 10 mm), the end of needle thread
may protrude like beard even when adjusting
needle thread shorter.
10mm
(Wrong side)
Needle thread
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