PS-910-6055

INSTRUCTION MANUAL
 CONTENTS
1. SPECIFICATIONS.............................................................................................1
2. CONFIGURATION.............................................................................................3
3. INSTALLATION.................................................................................................4
3-1. Setting up the sewing machine..................................................................................... 4
3-1-1. Unpacking............................................................................................................... 4
3-1-2. Setting up the X-feed mechanism......................................................................... 6
3-1-3. Setting up the table................................................................................................ 8
3-1-4. Setting up the switch button (asm.)..................................................................... 9
3-1-5. Points to be checked and precautions to be taken before turning the power
ON........................................................................................................................ 10
3-1-6. Installing the air hose.......................................................................................... 12
3-1-7. Cautions for the compressed air supply (source of supply air) facility.......... 13
3-1-8. Checking the needle entry point and hook timing............................................ 14
3-1-9. Checking the concentricity (How to handle the case where you have checked
the timing between the needle entry and the hook as described in 3-1-10
and have found it is not correct)....................................................................... 16
3-1-10. Adjusting the position of the Auto switch....................................................... 28
3-2. Installing the bobbin winder device............................................................................ 29
3-3. Winding the bobbin thread.......................................................................................... 29

4. PREPARATION OF THE SEWING MACHINE................................................30

4-4. Threading the machine head....................................................................................... 34
4-5. Bobbin replacement procedure................................................................................... 36
4-6. Adjusting the Thread Tension..................................................................................... 37
4-7. Adjusting the thread take-up spring and the thread breakage detector plate........ 41
4-8. ADJUSTING THE THREAD TAKE-UP STROKE.......................................................... 41
4-10. How to wind a bobbin................................................................................................. 44
4-11. Adjusting the position of the thread trimmer........................................................... 45
4-12. How to confirm the amount of oil (oil splashes) in the hook................................. 48
4-14. Adjusting the needle hole in the throat plate and the needle................................. 50
4-17. Adjusting the electronic intermediate presser stroke............................................. 53
4-18. Adjusting the air blow for the needle thread and bobbin thread........................... 54
4-21. RFID (How to use the electronic label) (only for the H type).................................. 59
4-22. Configuration of the operation panel........................................................................ 62
4-24. Parameter List............................................................................................................. 65
4-25. Error Code List............................................................................................................ 72

i
5. MAINTENANCE OF SAWING MACHINE.......................................................81
5-1. TROUBLES AND CORRECTIVE MEASURES(SEWING CONDITIONS)..................... 85
5-2. Disposal of batteries.................................................................................................... 87
5-3. Replacing the fuse........................................................................................................ 88

ii
 1. SPECIFICATIONS
1 Sewing area (X,Y)(mm) 600×550

2 Feed motion of feeding frame Intermittent feed (2-shaft drive by stepping motor)

3 Needle bar stroke 40mm

4 Max. sewing speed 3,000 sti/min (When stitching pitch is 2.5 mm or less)
For other stitch pitches and numbers of revolutions, refer to Fig. 1.

5 Settable stitch length 0.5 to 12.7mm

6 Needle A type : DP×17 #23 (#23 to #25)

H type : DP×17 #21 (#19 to #21)

7 Hook Double-capacity full-rotary hook

8 Intermediate presser stroke 4 mm (Standard)

9 Lift of intermediate presser 20mm

10 Lift of disc presser 15mm

11 Memory of pattern data Max. 999 patterns

12 Number of patterns that can be Max. 999 patterns

identified

13 Program input method USB

14 Data format SLW data is applied to sewing machine application

DXF.AI.PLT.DST data editing software
* Change to SLW.

15 Main shaft servomotor power 750W

16 Power consumption 550VA

17 Input voltage 220V±10%

18 Mass (gross mass) With packaging : 677kg

Without packaging :552kg

19 Dimensions 1410mm(W)×1753mm(L)×1524mm(H)

20 Operating temperature range 5 to 35˚C

21 Operating humidity range 35 to 85% (No dew condensation)

22 Storage temperature range -5 to 60˚C

23 Storage humidity range 20 to 85% (No dew condensation, 85 % applies to the case where the
temperature is 40 ˚C or lower)

24 Air pressure used 0.5 to 0.6MPa

25 Needle highest position stop facility After the completion of sewing, the needle can be brought up to its high-
est position.

26 Noise - Equivalent continuous emission sound pressure level (LpA) at the work-
station :
A-weighted value of 74.0 dB ; (Includes KpA = 2.5 dB) ; according to
ISO 10821- C.6.2 -ISO 11204 GR2 at 1,800 sti/min.

27 Lubricating oil #10 (Equivalent to JUKI NEW DEFRIX OIL No. 1)

#32 (Equivalent to JUKI NEW DEFRIX OIL No. 2), Lithium based grease
No. 2
Grease information
Manufacturer: WERATCHE
Type and number: Lithium base 2# grease

–1–
 Number of revolutions for sewing at shipment：1,800 sti/min

Maximum applicable number of revolutions for sewing at each pitch

Pitch Number of Revolutions Pitch Number of Revolutions

Number of 0.5 to 3.0mm 1,800 sti/min 5.6 to 9.0 mm 1,100 sti/min
revolutions for
sewing 3.1 to 3.5 mm 1,600 sti/min 9.1 to 9.5 mm 600 sti/min

3.6 to 4.0 mm 1,600 sti/min 9.6 to 12.7 mm 500 sti/min

4.1 to 4.5 mm 1,400 sti/min

4.6 to 5.5 mm 1,200 sti/min

Fig. 1

Sewing of circular patterns

When sewing circular patterns diameter of which is φ60 mm or less, sewing performance
of the sewing machine may be affected by overrun of the lower rotating motor depending
on the pattern.

–2–
2. CONFIGURATION

❶
❻

❹
❸

❺


❼  ❾ 

❽
❶ Machine head
❷ Table
❸ X-axis feed mechanism
❹ Y-axis feed mechanism
❺ Cassette clamp device
❻ Operation panel
❼ Air control
❽ Electrical control box
❾ Power switch (also used as emergency stop switch)
 Thread stand
 Bobbin winder device
 Safety cover

–3–
 3. INSTALLATION

3-1. Setting up the sewing machine

3-1-1. Unpacking
❶
1) Lift clamp ❶ as shown in the pic-
ture.

If the clamp is not lifted

up sufficiently, unpack-
ing will not be smoothly
carried out.

2) Detach top cover ❷ first. Then, detach the remaining covers from the four surfaces.
3) Remove the plastic cover.

The sewing machine is shipped with two precau-

tion sheets and one needle entry sheet attached
at the time of shipment.
① : Precaution sheet for setup
② : Precaution sheet for confirmation of center
of needle
③ : Needle entry sheet

Refer to the pages P10 and beyond

for contents in detail.

–4–
 ❸
❸

4) Remove front and rear sheet metal fittings ❸ for fixing the sewing machine.
* Tools are packed in the accessory box for the sewing machine.

5) Remove parts, accessories and feed mechanism from the wooden crate.

6) Lift the sewing machine with a forklift to bring it

to the specified location. (Weight of the sewing
machine: 552 kg)

WARNING :
When working with a forklift, two or
more people should handle the sew-
ing machine while checking for safety.

In this forklift truck

Insert it.

–5–
 7) Turning casters ❹ , check to make sure
that the sewing machine is put horizontally
on the forks of the forklift.
Keep the sewing machine on the forks in
such a way that it does not rattle.
❹
This adjustment is a temporary
adjustment; be sure to level and
center it later.

3-1-2. Setting up the X-feed mechanism

1) Take out the X feed mechanism from

the cardboard box.
2) Unpack the X-feed mechanism.

3) Lay the X-feed mechanism aside the main body

of the sewing machine.
Move the clamp to the center of the X-feed mech-
anism.

–6–
 4) Remove rubber plugs ❷ . Remove six nuts ❸
located on the opposite side with a wrench. Take
care no to allow the screws to slip off the mount-
ing holes after you have removed the nuts.
❷ Put the nuts you have removed in the accessory
box.

5) Aligning the screws with the taps of the X-feed

support block, tighten the screws.

6) Connect the cable guide to the X feed mechanism. Then, tighten the screws.
7) Connect the connectors and conduct air piping.

–7–
3-1-3. Setting up the table

Fig.1

1) Set up the sub table.

Tighten the screws as illustrated in Fig. 1.

X feed mechanism After you have set up the sub table,

check to make sure that there is a
clearance between the table and the
X-feed mechanism.

Table

Check for a
clearance.

–8–
 ❶

2) Secure the parts with dedicated link plates ❶ and nuts.

3-1-4. Setting up the switch button (asm.)

1) For switch button (asm.) C, change round the

direction of assembly.
Then, secure it to the aluminum plate of the
front table (right) with T-head screw A and nut
B.
Secure the switch button (asm.) so that its
three switch buttons are faced upward.

It may not be necessary to change

C
the direction of assembling in
accordance with the usage condi-
tions.

–9–
3-1-5. Points to be checked and precautions to be taken before turning the power ON

Intermediate presser

Auxiliary
presser

Packed together with the

Needle drop sheet
accessories Level 1

Adjusters (at four locations)

1) Place the level on the top surface of the throat plate. Adjust the adjusters up and down for leveling of the
sewing machine while observing the level.
Adjust so that air bubble in the level is brought to the center (circle at the center).
Adjust the the right and left two adjusters on the front side first as reference. Then, adjust the four adjust-
ers on the rear side.

2) Inspect whether the electrical components and

pneumatic components are correctly assembled.

– 10 –
 3) Inspect whether the needle entry point is correctly
aligned with the center of the needle hole in the
throat plate of the sewing machine.

Detector plate
Sensor

4) Move the XY feed by hand to check

whether it can be moved smoothly.

5) Carry out steps 1) to 4) to make sure that there is

no problem. Then, turn the power to the sewing
machine and press the RESET key on the panel.

Turn the digital pulley to lower the needle to make

sure that the tip of the needle is aligned with the nee-
dle entry marker on the needle entry sheet.
① Description on the Precaution sheet for setup:
2) Confirmation of the center of the needle and
the center of the hole in the throat plate
② Precaution sheet for confirmation of center of
Needle drop sheet needle:
If the needle-center misalignment is approximate-
ly 0.2 mm, correct it by adjusting the adjusters.
If the needle-center misalignment is approxi-
mately 0.3 mm or more, adjustment of the hook
driving shaft saddle will be necessary. Contents
described on P18 to P21

If the needle-center is not aligned,

sewing problems (such as stitch skip-
ping and thread breakage) may occur.
So, take added care.

Digital pulley

– 11 –
3-1-6. Installing the air hose

WARNING :
Check to be sure that the air hose is fully inserted into the air cock before supplying the air to the
machine so as to prevent the air from being blown directly to the human body. Then, carefully
open the air cock.

1) Connecting the air hose

Connect the air hose to ❶ .

2) Adjustment of air pressure

❷
Pull up air regulating knob ❷ . Then, turn it to
adjust the air pressure to 0.5 - 0.6 MPa.
Then, push down air regulator knob ❷ .
Pull air regulating knob ❸ toward the operator.
Then, turn it to adjust the air presser to 0.15 MPa.
Then, push down air regulator knob ❸ .

❷ : Adjustment of the air pressure of the entire

sewing machine
❸ : Adjustment of the air pressure of the disk
presser (only for the H type)

– 12 –
3-1-7. Cautions for the compressed air supply (source of supply air) facility

As large as 90 % of failures in pneumatic equipment (air cylinders, air solenoid valves) are caused by "con-
taminated air."
Compressed air contains lots of impurities such as moisture, dust, deteriorated oil and carbon particles. If
such "contaminated air" is used without taking any measures, it can a cause of troubles, inviting reduction in
productivity due to mechanical failures and reduced availability.
Be sure to install the standard air supply facility shown below whenever the machine provided with pneumat-
ic equipment is used.

Standard air supply facility to be prepared by the user

Air compressor

After cooler
Auto-drain
Air tank

Main line filter

Auto-drain

Air dryer Quality of the air supply

When the supply air contains a considerable amount of moisture

Ambient environment
When our machine is installed at a place where the temperature greatly
changes in the morning and in the evening from that in the daytime or
freeze is like to occur.
In the aforementioned cases, be sure to install an air dryer.

Mist separator
When the supply air contains a considerable amount of carbon
and dust
(Most troubles in the air solenoid valves are caused by carbon.)
Be sure to install a mist separator.

Standard equipment supplied by JUKI

Filter regulator

Air solenoid valve

Air cylinder

Cautions for main piping

• Be sure to slope main piping by a falling gradient of 1 cm per 1 m in the direction of air
flow.
• If the main piping is branched off, the outlet port of the compressed air should be pro-
vided at the top part of the piping using a tee in order to prevent drain settling inside the
piping from flowing out.
• Auto drains should be provided at all lower points or dead ends in order to prevent the
drain from settling in those parts.

– 13 –
3-1-8. Checking the needle entry point and hook timing

* When the power to the sewing machine is in the

ON state, reset the sewing machine first.
Intermediate presser 1) First, remove the auxiliary disk presser and the
intermediate presser.
Check the alignment of the needle entry point of
the sewing machine with the center of the throat
plate. (Check the direction of 360 degrees.)
If the needle entry point is not aligned with the
Auxiliary presser center of the throat plate, refer to the adjustment
method on P18.
* The auxiliary presser is not installed for the A
type.

BBe sure to carry out the aforemen-

tioned checking procedure whenever
the installation status of the sewing
machine is changed such as in the
case of using it after changing its po-
sition in your plant or moving it to any
other location.

2) Remove the throat plate. Turning the digital pul-

ley, check the lower dead point of the needle bar
with a timing gauge. If the needle-to-hook timing
cannot be successfully adjusted, refer to the ad-
justment method on P36.

Align the timing gauge with the

end face of the needle bar.

Digital pulley

– 14 –
 3) Remove the needle plate and inspect the hook
alignment. (360 Check at the full circumference.)

* Note: How to turn the machine head

1) Press the "Next" ❶ on the Main screen to display
the Maintenance screen.

2) Press "Extend" ❷ to display the Extension

screen.

3) Press ❸ and ❹ to rotate the machine head and

the hook driving shaft saddle.

❸ ❹

– 15 –
3-1-9. Checking the concentricity (How to handle the case where you have checked the
timing between the needle entry and the hook as described in 3-1-8 and have found it
is not correct)

Turn the power ON and reset the sewing machine. Conduct adjustment in this state.
Do not turn the power OFF during adjustment.

1. Adjusting the concentricity between the hook driving shaft saddle and the needle bar
If the needle and the hole in the throat plate are not aligned, concentricity between them has to be adjust-
ed. Correct the concentricity between the needle and the hole in the throat plate through the adjustment of
their positions in four directions (0°, 90°, 180° and 270°).
1) Remove two resin covers and presser foot.

Presser foot

Resin cover

2) Remove the throat plate and the needle.

Needle
Throat plate

Relation between the jig ❸ and the needle bar jig ❹ (pin)
Figure observed from above

T-shaped jig

Needle bar jig (pin)

❹

❸ Hole in the ❹
T-shaped jig

– 16 –
3) Reset the hook driving shaft saddle to the 0° position.
4) Attach the concentricity adjustment jigs to the throat plate and to the needle with the respective screws.
(Put the T-shaped jigs with its marked surface faced upward.)

5) Adjust the T-shaped jig ❸ so that the needle bar jig passes through the hole in the T-shaped jig when
lowering the needle bar.

Insert needle bar jig ❹ into the needle bar.

When you lower the needle bar, carefully check whether it interferes with other parts.

6) Lift the presser bar. Turn the hook driving shaft

saddle up to the 180° position. Then, slowly lower
the needle bar to check whether the needle bar
jig enters the hole in the T-shaped jig.
Check the concentricity at the position that is in
the 180° opposite direction in reference to 0° of
180
the hook driving shaft saddle (the pin fits in the
T-shaped jig).

180°
Relation between the jig and the needle bar jig (pin)
Figure observed from above

7) As long as the needle-center is exactly the same at the aforementioned two different positions, no adjust-
ment will be necessary.

– 17 –
 180°
Relation between the jig and the needle bar jig (pin)
Figure observed from above

180

8) If the needle bar jig fails to enter the hole in the T-shaped jig, adjustment will be necessary. Check the
misalignment direction.
① In the case of misalignment in the X direction, it is necessary to carry out adjustment in the X direction.
(X direction: Lateral direction toward the sewing machine)

180° from the front

Relation between the jig and the needle bar jig (pin)
Figure observed from above

180° from the right side

② In the case of misalignment in the Y direction, it is necessary to carry out adjustment in the Y direction.
(Y direction: Longitudinal direction toward the sewing machine)

Relation between the jig and the needle bar jig (pin)
Figure observed from above

Needle bar jig

180

③ In the case of misalignment both in the X and Y directions, it is necessary to carry out adjustment in both
the X and Y directions.)
(Y direction: Longitudinal direction toward the sewing machine)

– 18 –
2. How to adjust the position of the hook driving shaft saddle

2-1. Preparation before adjustment

1) Remove the front left fixing screw. (3 mm hexago-
nal wrench)

After you have carried out steps 1) to 3), remove the

sheet metal on the right side toward the front of the
sewing machine.

ねじ

2) Turn the hook driving shaft saddle up to the 180°

position. Remove the fixing screw on the right
side. (3 mm hexagonal wrench)

ねじ
Screws

3) Turn the hook driving shaft saddle up to the 270°

position. Remove two fixing screws and remove
the sheet metal. (3 mm hexagonal wrench)

ねじ
Screws

– 19 –
 4) Slightly loosen eight screws that secure the hook
driving shaft saddle. (8 mm hexagonal wrench,
auxiliary pipe)

When you loosen the screws, the

screw heads should not exceed the
top surface of the base to prevent the
sheet metal from interfering with the
screws when turning the hook driving
shaft saddle.

Screws

Auxiliary pipe Use an auxiliary pipe or the like so that you can loos-
en the screws with ease.
Hexagonal
wrench

Sheet metal

When loosening the

screws, the screw heads
should not exceed the
top surface of the base.
Washer

Screws

– 20 –
2-2. Adjustment in the X direction

180°
Relation between the jig and the needle bar jig (pin)
Figure observed from above

The hole is located at the

left of the pin.

1) In the case the hole in the T-shaped jig is located at the left of the pin, it is necessary to adjust the hook
driving shaft saddle toward the right.

2) Tighten the screws (three pieces) of the hook driv-

ing shaft saddle as shown in the figure on the left.
Tighten the screws by the distance of X/2 to form
a gap between the screw heads and the base
surface.
Form a gap between the screws and the base
surface in the direction you want to move the
base. Then, push in the base with the screw
heads on the opposite side to move it.

3) Tighten the screws (three pieces) in the hook driv-

ing shaft saddle as shown in the figure on the left.
Loosen them by the distance of X/2. Then, press
the screw heads against the base surface and
move the base by pushing it out to the right.

– 21 –
 0°
Relation between the jig and the needle bar jig (pin)
Figure observed from above

0°

180°

180°

4) Check the relative position between the needle bar jig and the hole in the T-shaped jig at the 0° and 180°
positions. Then, carry out the adjustment steps 2) and 3) in repetition until the distance between the nee-
dle bar jig and the hole in the T-shaped jig at the 0° and that at the 180° are made equal.

5) After the adjustment for equalization of the

distances, adjust the positions of the right and
left screws (six pieces) so that they are lightly
pressed against the base surface.

6) In the case the hole in the T-shaped jig is located

180°
at the right of the pin, it is necessary to adjust the
hook driving shaft saddle to the left.
The adjustment procedure is same as described
The hole is to the above, but in the opposite direction.
right of the pin.

– 22 –
2-3. Adjustment in the Y direction (right angle of view)

180° Relation between the jig and the needle bar jig (pin)
Figure observed from above

1) In the case, the hole in the T-shaped jig located on the front side of the pin, it is necessary to adjust the
hook driving shaft saddle backward.

Rear side

Front side
End face of the stepped portion comes in light
contact with the fixing block (when adjusting
the hook driving shaft saddle backward).

Screw head seating surface comes in light in

contact with the fixing block (when adjusting
the hook driving shaft saddle forward).

2) Loose two adjustment screws (two pieces) to allow the end face of the stepped portion to come in light
contact with the fixing block.
After the aforementioned portions come in contact, turn the adjustment screws (two pieces) counterclock-
wise to move the hook driving shaft saddle backward by up to X/2.

– 23 –
 0° Relation between the jig and the needle bar jig (pin)
Figure observed from above

0°

180°

180°

3) Check the relative position between the needle bar jig and the hole in the T-shaped jig at the 0° and 180°
positions. Then, carry out the adjustment 2) in repetition until the distance between the needle bar jig and
the hole in the T-shaped jig at the 0° and that at the 180° are made equal.
In the case you have adjusted the hook driving shaft saddle position more than necessary, bring the screw
head seating surface into light contact with the block and adjust the hook driving shaft saddle in the oppo-
site direction of 2).
Make the misalignment amount at the 0° and that at the 180° same.

4) In the case the needle bar jig is displaced to the

180° front side, it is necessary to adjust the hook driv-
ing shaft saddle forward.
The adjustment procedure is same as described
above, but in the opposite direction.

From the right side

– 24 –
 2-4. Confirmation and assembly after the adjust-
0° ment
1) Once you have completed the adjustment in the
X and Y directions, return the hook driving shaft
saddle to the 0° position. Re-check the adjust-
ment of the T-shaped jig to allow the needle bar
jig penetrates the hole in the T-shaped jig.

2) Turn the hook driving shaft saddle to the 90° po-

90° sition, 180° position and 270° position and check
whether or not the needle bar jig enters the hole
in the T-shaped jig.
If the needle bar jig fails to enter the hole, re-ad-
just the position of the hook driving shaft saddle in
the X or Y direction.

180°

270°

– 25 –
 3) If you find no problem with centering of the hook
driving shaft saddle in the four directions with the
jigs, remove the needle bar jig and T-shaped jig
lastly. Then, attach the needle and check whether
the clearance provided between the needle and
the blade point of the hook is within 0.05 to 0.2
mm in the four directions.
As long as all clearances are within the specifica-
tion, the centering adjustment has been properly
carried out.
On the other hand, if the clearance between the
needle and the hook does not fall within the spec-
0.05 to 0.2mm
ification in all directions, it will be necessary to
re-adjust the centering or hook timing.

4) Temporarily tighten the setscrews (eight pieces)

of the hook driving shaft saddle. Re-check the
clearance between the needle and the blade point
of the hook in the four directions.
As long as all clearances in the four directions
fall within the specification, tighten the setscrews
(eight pieces).
If you find a malfunction, carry out re-adjustment.

Screws

– 26 –
 5) Lastly, restore the parts you have removed, such
as the sheet metal, throat plate, resin covers and
presser foot to the original positions.

【Image drawing of centering of the needle】

Adjustment in the lateral position ① Adjustment of the longitudinal position ②

180° 180°

Three screws each

on the right and left

270° 90° 270° 90°

Two adjustment
screws on the
front side
0° 0°

step1 step2 step3 Adjustment points

① Lateral Adjust the needle-center at A t 18 0 ° , a d j u s t t h e Re-adjust the T-shaped Car r y out lateral ad -
0° as reference. Then, turn m i s a l i g n m e n t t o X /2 jig to allow the pin to en- justment using three
by 180° and check the nee- position, a half of the ter the hole in the jig. screws on the left and
dle - center misalignment misalignment amount X. three ones on the right.
(amount and direction).
② Longi - Align the needle-center at A t 270°, a d j u s t t h e Re-adjust the T-shaped Carry out longitudinal
tudinal 90° as referenc e. T hen, m i s a l i g n m e n t t o X /2 jig to allow the pin to en- a d j u s t m e nt w i t h t wo
turn to 270° and check the position, a half of the ter the hole in the jig. adjustment screws on
needle - c enter misalign - misalignment amount X. the front side.
ment (amount and direc-
tion).

step1 step2 step3

– 27 –
3-1-10. Adjusting the position of the Auto switch

Turn the power ON and reset the sewing machine. Conduct adjustment in this state.
Do not turn the power OFF during adjustment.

While the power to the sewing machine is in the ON

state, place a template on the machine, press the
Clamp key (blue key) on the panel to clamp the tem-
plate. If the Auto switch fails to light up, adjust the
position of the Auto switch.
While the template is clamped, loosen the fixing
Fixing screw
screw of the Auto switch and move the Auto switch
to the right and left until its lamp lights up. Tighten
the fixing screw at this position.

– 28 –
 3-2. Installing the bobbin winder device

1) Insert bobbin winder disk mounting bar ❶ into

hole ❷ in the bobbin winder and secure with nut
❸.
❷

❸
❶

3-3. Winding the bobbin thread

1. Button description
LED lamp 1,2,3,4
1) Red button: emergency stop, press this button for
2 seconds will be reset.
2) Green button: Start
3) "P" key: function key, Hold down "P" key for 2
seconds to enter parameter setting, after setting
is finished, press this key again for 2 seconds to
keep parameter.
4) "+" key: numbers from 0 to 9
5) "-" key: numbers from 9 to 0
6) "<" key: turn left
"+", "-", "P", 7) ">" key: turn right
Emergency Start
"<", ">" key stop
2. Indicator light
4. Threading Diagram 1) Parameter indicator light
2) Production failure indicator light
3) Stop indicator light
4) Work indicator light

3. Parameter setting
Hold down "P" key for 2 seconds to enter the param-
eter setting inter face.

A: Thread length setting value:

0 to 99.9 m (when F is set to P0)
0 to 999 m (when F is set to P1)
D: Motor speed: F1 (fast), F2 (medium), F3 (slow)
F: Thread length range changeover :
P0 (0 to 99.9 m)
P1 (0 to 99.9 m)

– 29 –
4. PREPARATION OF THE SEWING MACHINE

4-1. How to attach / remove the cylinder lifting plate

1) While the power to the sewing machine is turned

ON, press switch ❶ .

2) Cylinder lifting plate ❷ comes off upward. Re-

move it. (The cylinder pushes up the lifting plate.)

❷
3) To install cylinder lifting plate ❷ , press switch ❶ .
(The cylinder comes down to allow the cylinder
lifting plate to be installed. The lifting plate is then
secured with a magnet.)

– 30 –
4-2. Lubricating method and check of the oil quantity

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.

1) Detach cylinder lifting plate ❶ .

2) Remove cylinder lifting plate ❶ .

Press ❷ on the Start screen A to display the
screen B.
Then, press ❸ to display the screen C. On the
screen C, press ❹ and ❺ to rotate the bed and
move lubricating rubber ❼ of oil tank ❻ to the
outside of the bed.
Or turn the power OFF and rotate the resin cover.

Screen A ❷

❸ Screen B

❼
❻

❹ ❺
Screen C

– 31 –
 3) Remove lubricating rubber ❼ . Pour the supplied
oil (or specified oil) into the oil tank.

4) The proper amount of oil in the oil tank is between

the Min and Max marker lines indicated on the oil
tank.

MAX

MIN

– 32 –
4-3. 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.

1) Loosen screw ❶ to remove the needle.

❷
❷ Be sure to hold the needle so that its
groove ❷ faces toward blade point ❸
❸
of the rotary hook.
❸
If polyester filament thread is used, it
may be sometimes difficult for the wip-
er to spread the thread. In such a case,
turn the needle counterclockwise to
tilt it slightly (15° or less).
After you have turned the needle, re-
check the hook timing (clearance
between the needle and the hook).

2) Tighten screw ❶ .

In the case of replacing the needle

❶
with a needle which differs in spec-
ifications, be sure to re-adjust the
distance from the rotary hook to the
needle. If you neglect this re-adjust-
～ 15° ment, the problems listed below can
occur.
1. Stitch skipping
2. Thread fray
3. Breakage of blade point of hook
4. Breakage of needle

– 33 –
 4-4. 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.

(1) A type
1) Put sewing machine thread ❶ on thread stand ❷ .
❶
❸

2) Pass the thread as shown in the figure.

Lastly, draw out the thread through the needle
eyelet by 50 to 60 mm.

– 34 –
(2) H type

1) Put sewing machine thread ❶ on thread stand

❶
❷.

2) Pass the thread as shown in the figure.

Lastly, draw out the thread through the needle
eyelet by 50 to 60 mm.

– 35 –
4-5. Bobbin replacement procedure

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.

(1) Removing the bobbin case

1) Open cover ❶ . Then, the bobbin can be
changed.
2) Raise latch A of bobbin case ❸ , and remove the
bobbin case ❸ and the bobbin ❷ .

Check the position of your hands and

the locations of goods before opening
/ closing cover ❶ so as to prevent the
❶ goods from being caught under the
cover and to prevent bodily injury.
In addition, do not push cover ❶ with
❷
your hands placed on it.

(2) Installing the bobbin

A
1) Set the bobbin ❷ into bobbin case ❸ in the direc-
❸
tion shown in the figure.
2) Pass the thread through thread slit B of bobbin
case ❸ , 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 C.
3) Pull out the thread by 50 mm from thread opening
C.
50mm

C
If the bobbin ❷ is installed in the bob-
bin case orienting the reverse direc-
tion, the bobbin thread pulling out will
result in an inconsistent state.
B
❷ ❸
(3) Installing the bobbin case
1) Place the bobbin case in the hook with its knob A
tilted and fully push it into the hook until you hear
it click.
2) Close cover ❶ .

If it is not fully inserted, bobbin case

❸ may slip off during sewing.

– 36 –
4-6. Adjusting the Thread Tension

(1) Adjusting the needle thread tension

Thread tension controller No. 1 ❶
When the tension disk of active tension ❸ is loos-
ened, a small amount of tension that is sufficient
❶ to control thread trimming has to remain. The re-
maining tension is produced by tension controller
❶ . It is possible to determine the length of thread
trailing from the needle after automatic thread
trimming by adjusting nut ❷ of the thread tension
controller. The length of thread trailing from the
❷ needle is reduced by turning nut ❷ clockwise (+).
It is increased by turning nut ❷ counterclockwise
(-).
Active tension ❸
The tension of active tension ❸ (tension of the
thread coming out of the needle eyelet) should be
set as low as possible so that the threads inter-
twine at the center of the material (Fig. A). If the
❸
thread tension is excessively high when sewing
a light-weight material, the material may become
wrinkled or thread may break.

Adjust the tension by changing A and B.

The adjustment range is from 0 to 100. The higher
the adjustment value, the higher the tension.
[Application range of A and B]
Save the tension setting of A in the pattern data.
The set value will be automatically changed if you
A B change over the pattern data.
The tension setting of B applies to all patterns. How-
ever, it is not saved in the pattern data. This means
that the setting of B will not be changed even if you
Fig. A change over the pattern data.
Refer to the next page for detailed instructions on
how to use active tension ❸ .
Fig. B
Fig. A: Threads are interlaced together accurately at
the center of material thickness.
Fig. C Fig. B: Needle thread tension is too low or bobbin
thread tension is too high.
Fig. C: Needle thread tension is too high or bobbin
thread tension is too low.

– 37 –
 (2) Adjusting the bobbin thread tension
1) Turn tension adjusting screw ❺ clockwise (in
❺ direction A) to increase or counterclockwise (in
direction B) to reduce the bobbin thread tension.
A
Recommended value: Approximately 25 g
B
The bobbin case will come down slowly by its
dead weight by holding it as illustrated in the fig-
ure.

(3) Method for using the AT

1. Method for setting the AT thread tension
1) Select the sewing pattern thread tension for which
you want to set.

2) Press the Presser/Thread clamp setting key A.

3) You can set the thread clamp tension by pressing

the Default thread clamp B. Enter a desired set
value and carry out test sewing.
Confirm an appropriate thread clamp tension set-
ting while observing the stitches.

4) Press return button C to return to the main

screen.

C B

– 38 –
 5) Press the reset button D on the main screen to
return to the origin.

6) As with step 2), get into the Thread clamp ten-

E
sion setting screen and enter the set value in the
Thread clamp E.
Set the Default thread clamp B to "1".

30

Thread clamp tension at the start of sewing 1: 30

B 1. Effective setting range of the

default thread clamp and the
thread clamp is from 1 to 100
(only integral numbers).
2. For the setting of the default
thread clamp, only check the
appropriate thread clamp ten-
sion by test sewing. Set the
thread clamp at the time of actu-
al production.

2. Method for changing the thread tension during

sewing
1) Set a tension of the thread clamp at the location
you want to change it at a midpoint of the seam
line.
Change the
Thread tension setting method in the case of the
thread tension
picture shown on the left

30 60

Thread clamp tension at the start of sewing 1: 30

Thread tension from the changing point -
(To the end of sewing) : 60

– 39 –
 2) If you want to change the tension further during
sewing, set the tension of the Thread clamp 1.
Thread tension setting method in the case of the
picture shown on the left

30 60 30

Thread clamp : 30
Thread tension from the first changing point - : 60
Thread tension from the second changing point -
If you want to change the tension, (To the end of sewing) : 30
always set it here.
The tension you have set for the
Thread clamp 1 will remain the
same until you complete sewing.

3. Method for deleting the changes in thread tension

setting during sewing
1) If you press Thread clamp 1 A and Delete B
keys, the individual tension settings within the
pattern will be totally deleted.

2) If you wan to delete the individual thread tension

settings separately, move cross mark cursor (
) to the target thread tension setting position and
press delete button B.

– 40 –
4-7. Adjusting the thread take-up spring and the thread breakage detector plate

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.

1) Adjusting the stroke

Loosen setscrew ❷ and turn thread tension con-
troller ❸ . Turning it clockwise will increase the
❺
stroke of thread take-up spring ❶ and, thereby,
❶ will increase the thread drawing amount.
❻ 2) Adjusting the pressure
To change the pressure of thread take-up spring
❶ , insert a thin screwdriver into the slot of thread
tension post ❹ while setscrew ❷ is tightened,
❹ and turn it. Turn it clockwise to increase the pres-
sure of thread take-up spring ❶ , or counterclock-
❷ ❸ wise to decrease it.
3) Adjusting the thread breakage detector plate
Loosen setscrew ❻ . Adjust the position of thread
breakage detector plate ❺ so that the amount of
contact between thread breakage detector plate
❺ and thread take-up spring ❶ is 0 to 0.2 mm.

Adjust so that thread breakage detec-

tor plate ❺ does not come in contact
with any metal parts other than thread
take-up spring ❶ . If it comes in con-
tact with any other metal part, a mal-
function may occur.

4-8. ADJUSTING THE THREAD TAKE-UP STROKE

1) When sewing heavy-weight materials, move

take-up thread guide ❶ to the left A direction to
A B
increase the length of thread pulled out by the
thread take-up.
❶ 2) When sewing light-weight materials, move take-
up thread guide ❶ to the right B direction to
decrease the length of thread pulled out by the
thread take-up.
Reduce the thread take-up amount.
3) At the standard position of thread guide ❶ , the
center of elongated hole is aligned with the center
of the screw.

– 41 –
 4-9. Needle-to-hook relationshi

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.

(1) Needle and hook, and angle setting

1) Lift the needle bar from its lower dead point by
2.4 ± 0.3 mm. In this state, adjust the needle bar

2.4 ± 0.3mm
height and the hook position.
2) When observing from the front face of the sewing
machine, the blade point of hook seems to over-
lap with the center of needle.
3) When observing from the side face of the sewing
machine, the clearance provided between the
blade point of hook and the scarf of needle is 0.05
0.05 to 0.2mm to 0.2 mm.

If thread breakage occurs, the thread

can be tangled in the hook. In such a
Front face Side face case, remove the thread being tangled
in the hook carefully. Then, re-start
sewing.

4) As shown in the figure, the electrical shaft angle

setting QEP value displayed on the operation
panel becomes 450 to 465 (reference value).

(2) Position of the needle and the inner hook holder

Longitudinal position of the inner hook holder and
needle: The front end of needle is aligned with the
inner hook.

Lateral position of the inner hook holder and needle:

The rightmost end of projection of inner hook holder
is aligned with the right side of needle.

– 42 –
(3) Adjusting the hook timing

The timing gauge is supplied for the machine as an accessory.

Adjust the timing between the nee-

Needle bar/hook timing
adjustment position Lower dead point of the dle bar and the hook according to
needle bar
the standard specification.

1) Place the timing gauge on the hook driving shaft

saddle. At first, adjust the lower dead point of the
needle bar.
Loosen the needle bar connection screw and
adjust the height of the needle bar.
2) Then, turn the timing gauge by 180 degrees of an
angle longitudinally. Adjust the hook timing posi-
tion.

Align the timing gauge with the

end surface of the needle bar.

Needle bar
connection

Needle bar connection

setscrew

– 43 –
4-10. How to wind a bobbin

1) Put bobbin ❷ on bobbin winder shaft ❸ .

2) Pass sewing thread ❻ through spool rest rod.
3) Pass the thread as illustrated in the figure.
4) Manually wind thread on bobbin ❷ by several
❶ turns clockwise.
5) Press button ❹ to start winding thread on the
bobbin.
❷ 6) When the bobbin thread amount wound on the
bobbin reaches the set amount (80 %), the bob-
bin winder automatically stops turning. Or, press
button ❺ to stop the bobbin winder.
7) Trim the thread with thread trimmer ❶ . Detach
❹ ❸
❺ bobbin ❷ .

Amount of thread wound on a

bobbin: 80 % (recommended)

– 44 –
 4-11. Adjusting the position of the thread trimmer

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.

(1) Adjusting the position of the thread trim-

❶ ming cam
1) Turn pulley ❶ to engage needle bearing ❸ of the
thread trimmer connecting rod with groove ❷ in
the thread trimming cam.

❷
The shipping standard of the electrical shaft angle
setting parameter QEP value is 170. Finely adjust
this parameter value in accordance with the differ-
ence in materials.

(2) Adjusting the position of the moving knife

and counter knife
❶ 1) Attach the moving knife to the moving knife base.
The moving knife is in Push the moving knife to the right to make the
parallel with the moving
knife base
tail of the moving knife in parallel with the moving
knife base. At this time, the blade point of moving
knife is aligned with the needle. Tighten moving
knife clamping screw ❶ .

Blade point of moving knife is aligned

Blade point of moving knife
with the needle

– 45 –
 2) Install the counter knife.
There is a hole in the fixed knife tail, so insert a 2.5
hex wrench, align the fixed knife tail with the hex
❷ wrench, and tighten fixing screw ❷ of the fixed
knife.

Hole in the
tail section

Counter knife
3) Loosen setscrew ❸ of the moving knife rod. Ad-
just the clearance provided between the moving
2 ± 1mm knife and the counter knife to 2±1 mm. Then,
tighten setscrew ❸ .
Moving knife

– 46 –
 4) Mark the 5-mm position of the moving knife blade
Mark both sides of the moving with a black marker pen. Adjust the counter knife
knife with a black marker pen.
pressure with counter knife pressure adjustment
screw ❹ (two locations).
After the completion of the aforementioned adjust-
ment, face down the moving knife and re-adjust
the moving knife pressure repeatedly until both
sides of the black marker on the moving knife
blade are rubbed by the counter knife at the same
time. In addition, try to adjust so that; the less
the friction force between the moving knife and
the counter knife is decreased, the better thread
trimming result can be obtained.

Black markers on both sides of

the moving knife are rubbed by
the counter knife simultaneously.

– 47 –
 4-12. How to confirm the amount of oil (oil splashes) in the hook

WARNING :
Be extremely careful about the operation of the machine since the amount of oil has to be checked
by turning the hook at a high speed.

(1) How to confirm the amount of oil (oil splashes)

❶ Amount of oil (oil splashes) confirmation paper ❷ Position to confirm the amount of oil (oil splashes)
Approx.
30 mm

10 mm
Approx. 100 mm

* Use any paper available regardless

of the material. Oil splashes confirmation paper

When carrying out the procedure described below, confirm the state that the needle thread
from the thread take-up lever to the needle and the bobbin thread are removed, the presser
foot is lifted and the slide plate is removed. At this time, take extreme caution not to allow
your fingers to come in contact with the hook.

1) Check to make sure that the oil quantity is adequate referring to "4-2. Lubricating method and check of
the oil quantity" p.31.
2) If the machine has not been sufficiently warmed up for operation, make the machine run idle for approxi-
mately fifteen minutes.
3) Place the amount of oil (oil splashes) confirmation paper under the hook while the sewing machine is in
operation.
4) Confirmation of the amount of oil (oil splashes) should be completed in ten seconds.
(2) Sample showing the appropriate amount of oil (oil splashes)
1) The state given in the figure above shows the
Appropriate amount of oil (State of oil spots) appropriate amount of oil (oil splashes).
2) Check the oil amount (oil splashes) three times
Splashes of oil from the hook (on the three sheets of paper), and adjust so that
it should not change.
Do not excessively increase/decrease
the amount of oil in the hook. If the
amount of oil is too small, the hook
will be seized (the hook will be hot). If
the amount of oil is too much, the sew-
ing product may be stained with oil.

(3) Operation of the operation panel

1) Press ❸ on the Start screen A to display the
screen B.

Display A ❸

– 48 –
 2) Press ❹ to change the number of revolutions to
2500.
Press ❺ to run the sewing machine idle for 15
minutes. Then, measure the amount of oil.
❹

❺
Display B

4-13. Adjusting the amount of oil in the hook

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.

1) Remove the cylinder lifting plate.

B 2) The oil amount is increased by turning screw ❶ in
the direction of arrow A, or decreased by turning
it in the direction of arrow B.
A 3) After the completion of adjustment, attach the
cylinder lifting plate.

1. After the adjustment, check the oil quantity by running the sewing machine idle for
approximately 30 seconds, as well as by checking it in comparison with the sample
showing the adequate oil quantity. (Refer to "4-12. How to confirm the amount of oil (oil
splashes) in the hook" p.48.)
2. In the case of adjusting the hook oil quantity, firstly adjust the oil quantity by turning oil
quantity adjustment screw in the direction of arrow A to increase it. Then, adjust the
hook oil quantity by turning the adjustment screw in the direction of arrow B to de-
crease it.
3. The hook oil quantity has been factory-adjusted at the time of shipment, based on the
maximum sewing speed of sewing machine. When the customer always operate the
sewing machine at a low speed, the hook oil quantity may run short causing a sewing
machine failure. To prevent such a failure, adjustment of the hook oil quantity is re-
quired when the customer runs the sewing machine at a low speed at all times.

– 49 –
4-14. Adjusting the needle hole in the throat plate and the needle

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.

In the case the needle does not come down to the

center of needle hole in the throat plate, the position
of the throat plate can be finely adjusted with screws
❶ ❷ and ❸ .
1) Loosen screws ❷ and ❸ and lightly loosen screw
❶ . Then, move the throat plate to adjust so that
the needle is aligned with the center of needle
hole in the throat plate.
2) Tighten ❶ . Then, tighten ❷ and ❸ .

❶
❸

– 50 –
4-15. Adjusting the disk presser pressure (only for the H type)

1) Adjust the disk presser air cylinder pressure regu-

❶
lation valve ❶ . Pull up nut ❷ . Then, turn the nut
clockwise to increase the disk presser pressure
or turn it counterclockwise to decrease it. The
air pressure has been factory-set to 0.15 MPa at
the time of shipment. Adjust it appropriately while
checking the actual sewing state.

2) Changing the disk presser

Check the actual sewing operation. Use the disk
presser or the plastic disk presser according to
the condition of actual sewing operation.
A Disk presser (factory-attached at the time of
shipment)
B Plastic disk presser
When changing the disk presser with the plastic
disk presser or vice versa, try to position the disk
presser so that its bottom surface is in parallel
with the hook cover. Adjust the height of the disk
A presser according to the actual material thickness
(i.e., height) while taking care not to allow the disk
pressers to come in contact with the intermediate
presser.

– 51 –
4-16. Adjusting the thread end position at the beginning of sewing

It is possible to set the needle thread end posi-

tion at the beginning of sewing to top side ❶ or
underside ❷ of material.
Change over the setting of the wiper function be-
❶ tween ON and OFF in accordance with these two
conditions of the needle thread end position.

❷ ❶ To put the needle thread end on the top of

material
Place the wiper function in OFF.
Wrong side of material
❷ To put the needle thread end on the underside
of material
Place the wiper function in ON.

– 52 –
4-17. Adjusting the electronic intermediate presser stroke

It is necessary to adjust the intermediate presser

stroke (A) appropriately since there would be the
A
need for preventing stitch skipping depending on
thickness or type of the material.

1) Press ❶ on the main screen of electrical

box.
2) When you press the "Machine setting parameter",
❷ is displayed.
When you enter the password "11111111", screen
❸ is displayed.
3) On the screen that is displayed by pressing the
"Presser follow-up setting", set the parameter (the
follow-up height of presser foot has been facto-
❶ ry-adjusted to 3 mm at the time of shipment).

– 53 –
4-18. Adjusting the air blow for the needle thread and bobbin thread

Blow-up pipe ❶ blows air to blow up the thread end

trailing from the needle to bring it under disk presser
❷ at the beginning of sewing by controlling the sole-
noid valve of the electrical system.
❶ Thread end is pushed by air between the disk press-
er and the pattern at the beginning of sewing. In the
case the thread end cannot be pushed due to the lo-
cation and direction of slits on the pattern, adjust the
blowing direction of the air to allow the thread end to
be pushed by air.
❷

Launch the pattern creation software to operate and

process the pattern to be sewn.
On the screen that is displayed by clicking "Op-
eration processing" ❸ , click ❹ ("Enter I/O") and
change the "I/O" to 5.
Change the "Level" to "high" ("low" refers to "turning
OFF"). Click ❺ ("Delay"). Change the "Delay (msec)"
❸
to 225.

The needle thread air blower and the

wiper cannot be used simultaneously.
❹
1. The wiper provides the function for
bringing the needle thread above
the presser foot.
2. The needle thread air blower pro-
vides the function for bringing the
needle thread under the disk press-
er.

– 54 –
 4-19. Making a template

(1) Machining a template

6055 type template of dimensions of the maximum sewing range
・ Material of template: PVC plate or a stainless plate
・ Template thickness: Thickness of the template is 2 mm for the PVC plate (same for the upper and lower
templates) or 3 mm for the stainless plate (lower base plate).
・ Adjust the template size according to the cloths and/or pattern to be sewn.
The size must not exceed the maximum dimensions of the relevant specifications.
・ Check complexity of the pattern to be sewn. Then, select the sewing slits from the range of 6 mm to 10
mm according to the complexity of the pattern.
・ Locus of sewing slits on the template should be designed according to the pattern to be sewn or intended
machining.
・ Select the suitable pattern carving machine. The template must be machined by the qualified engineers
who have successfully finished the on-the-job training.
・ After the completion of machining upper and lower templates, deburr the templates and the top surface of
the template mounting plate.

RFID chip pasting

positions
Groove
width 8

Y Directional sewing area 550

725

Groove
Groove width 8
width 8
Groove
width 8

X Directional sewing area 600

PVC plates Stainless plates

Upper template
Φ12( -0.1
0
)

Lower template
Φ12( -0.1 )
Φ 7.5

(Φ 5.5)

0
Φ 9.5 to 10
(M5)
Φ 12

(M5)
90°

(28) PIN (28)

Depth of
Template thickness 2 counterbore 1

Max 8 (maximum thickness of the Template thickness 3

Max 8 (maximum thickness of
pin mounting position) the pin mounting position)

Reference PIN information 40291471 (2 pieces/1 template)

Four pins are included as accessories.

10
C0.3
1.2 Technical requirements
1. Figures must be the same after the upper and lower templates
Φ 28 -0.1

are secured.
0
Φ 6.5

M5
2. The recommended thickness of the template is 2 mm.
3. The maximum thickness at which the pin is mounted must not
Steel material exceed 8 mm. (The template thickness is included)
28
C0.3
Heat-treated

– 55 –
(2) Attaching the templates

Machine the upper and lower templates based on

❶ ❷ ❸ ❹
the design.
1) Put the upper template on the lower template, as
shown in the figure, and adjust so that sewing slits
A on the upper and lower templates are aligned.
Affix exclusive template tape (36 mm wide) to por-
A tions ❶ , ❷ , ❸ and ❹ as illustrated in the figure.
2) To produce more beautiful seams, it is recom-
mended to firmly secure the material at the cor-
rect position by affixing sand tape, double-sided
adhesive tape, etc. on the slits of the upper and
lower templates or put positioning pins at appro-
priate locations in order to prevent the material
slippage.

❶ ❷ ❸ ❹

– 56 –
4-20. 縫製準備
1) Lock the safety cover.
Be sure to lock the safety cover before turning the
power to the sewing machine.
At the home position of the cover, fit the cover
over the two pins to lock it securely.
* If the safety cover is not locked securely, the
safety sensor will fail to detect and fail to allow the
safety cover sewing machine to start. So, be careful.

Pin

2) Turning ON the main power switch.

Press switch ❶ to turn ON the main power sup-
ply.
3) Turning ON the main air source switch
❷ Move main air valve ❷ to the right to open the
main air source.
* If the operation panel freezes after you have
turned the power ON, check whether the opera-
❶
tion panel cable is connected properly.

4) Resetting the equipment

When the equipment is reset by pressing
❸ , the needle stops at its upper stop position,
and the disk presser and intermediate presser go
up.
5) Read the pattern data to be sewn, or directly edit
the pattern data on the operation panel.
Refer to the Instruction Manual for the comput-
❸ er-control system for details.

6) Attaching a pattern
A
Move an empty pattern (no materi-
al is placed) and insert the pattern
fixing pin A into the cassette clamp.

– 57 –
7) Reading the sewing pattern data
1. In the case an electronic label is attached to the pattern, the electrical system will automatically identify
the sewing pattern program that matches the pattern from among those stored on the electronic label.
2. In the case no electronic label is attached to the pattern, manually select the sewing pattern data that
matches the relevant pattern on the operation screen.
* Refer to "4-21. RFID (How to use the electronic label) (only for the H type)" p.59 for how to use the
electronic label.
8) Selecting the reference
❺
In order to align the locus of sewing pattern with
the sewing slits of the pattern, it is necessary to
set a reference. Specifically, set the reference re-
ferring to the Instruction Manual for the electrical
system scanner.
After the completion of establishment of a refer-
ence, display the operation screen. When you
keep button ❺ held pressed, the pattern locus
simulation sewing starts.
Operate the sewing machine once to check
whether or not the sewing pattern locus is aligned
with the pattern slits. If they are not aligned,
re-adjust the reference.
❼ ❹ ❻ To stop the operation while the simulation opera-
tion is being carried out, press button ❼ to stop it.
9) Placing the material to be sewn
1. Detaching the pattern
When you move the pattern to the reset position and press clamp button ❹ on the operation panel, two air
cylinders on the X-direction linear module release the pattern. Take out the pattern.
2. Placing the material
Place the material to be sewn on the pattern. Then, check that the material is neatly arranged horizontally.
In addition, secure the material with the holding method that matches the pattern to prevent the material
from moving out of position. If the material has an infill of feather or cotton, squeeze the material to push
out air as far as possible.
10) Setting the reset, pattern on which the material is placed, and the reference
* Carry out resetting following the step of procedure 3).
* Handling of the pattern on which the material is placed is described in the step of procedure 5).
* Reference setting is carried out following the step of procedure 7).
11) Starting
Press the start button ❻ on the operation panel to start sewing. Then, the sewing machine enters the
automatic sewing mode.
12) Temporary stop
If any accident occurs during sewing, press the temporary stop button ❼ on the operation panel. Then,
the sewing machine immediately stops operation.
* For the A type, sewing is started by pressing Start buttons ❽ and ❾ simultaneously.

❾
13) Re-starting
Once the aforementioned accident is eliminated, press Pause key ❼ to reset the emergency stop mode.
Then, press Start key ❻ to re-start automatic sewing.

– 58 –
4-21. RFID (How to use the electronic label) (only for the H type)

1. Attaching the electronic label

Attach electronic label ❶ onto the pattern with
double-sided adhesive tape or the like.

2. Writing sewing pattern data

1) Place electronic label ❶ on black dot ❷ on the
sewing machine table.

2) Press "Menu" ❸ on the initial screen.

– 59 –
 3) Press the "File Management" ❹ on the menu
screen.

4) Select sewing pattern data ❺ you want to write

on the electronic label on the memory file screen.
After you have made a selection, press "RFID" ❻
to write the sewing pattern data on the electronic
label.

❺ ❻

– 60 –
 3. Read sewing pattern data
1) Press the'self-lock' ❶ in the default window.
❶
2) Place the electronic label with the sewing pat-
tern data written on the black dot on the table.
3) The sewing pattern data written on the elec-
tronic label is read.

– 61 –
 4-22. Configuration of the operation panel

B F C D E

A LCD portion of the touch panel

B PAUSE key Used to temporarily stop sewing
C OPEN key Move the cylinder lifting plate up and down.
D PRESS key Used to move up/down the cassette holder
E START key Used to start sewing (No key is provided for the A type)
F USB port

G Reset button Used to re-start the operation panel

H COM port RS232C

* This product is not provided with the Wi-Fi function.

– 62 –
Explanation of the operation panel screen

❶
❷

❸

❹
❺

❻  ❼  ❽ ❾      

Buttons / display Description

❶ Lock key Used to lock the sewing pattern

❷ Threading key Used to thread the machine head

❸ Main shaft speed change key Used to change the sewing machine main shaft speed

❹ Bobbin thread usage key Used to display the amount of use of the bobbin thread and to move
the screen to the setting screen *1
❺ Sewing count key Used to display the sewing count and to move the screen to the set-
ting screen *1
❻ Menu Used to move the screen to the menu screen *1

❼ Ready key Used to return the sewing machine to its origin

❽ Reference setting key Used to move the screen to the reference setting screen *1

❾ Trim key Used to trim the needle thread and the bobbin thread.

 Presser foot key Used to operate the presser foot

 Presser foot setting key Used to move the screen to the presser foot setting screen *1

 Page move key Used to move the screen to the test mode screen *1

 Test key Used to operate the sewing pattern by jumping

 Line segment return key Used to return the sewing machine to the starting position of the pre-
vious continuous sewing by jumping
 Line segment feed key Used to feed the sewing machine to the starting position of the next
continuous sewing by jumping
 Single stitch return key Used to return the sewing machine to the previous stitch. If this key is
held pressed, fast-backward mode starts
 Single stitch feed key Used to feed the sewing machine to the next stitch. If this key is held
pressed, fast-forward mode starts
 File key Used to move the screen to the sewing pattern selection screen

 Sewing pattern selection Select the sewing pattern to be used by touching it

*1. Refer to the Instruction Manual for the operation panel for details.

– 63 –
 4-23. Maintenance mode

The maintenance mode is the mode under which the notice telling that the duration of use of the sewing
machine has reached the time requiring maintenance is provided in order to extend the product life of the
sewing machine. Under this mode, the maintenance screen is displayed on the operation panel. When the
maintenance staff enters the user password, the maintenance screen is erased.

1) The maintenance screen is displayed when the

time at which the sewing machine requires main-
tenance has come. (Approximately once every
three months)
When cancel button A is pressed, the mainte-
nance screen returns to the sewing screen. How-
ever, the maintenance screen is re-displayed one
hour later.

A B

2) When enter button B is pressed, the user pass-

word input screen is displayed provided that the
user password has been set up in prior.

3) Add grease referring to "5. MAINTENANCE OF

SAWING MACHINE" p.81.

4) Enter the user password. Then, the maintenance

screen returns to the sewing screen.

– 64 –
 4-24. Parameter List

Classifi- Stan-
cation of No. Parameter name Range dard Meaning of parameter and comment
parameters value
Automatic P1 Clamp is opened after Yes/No Yes Cassette clamp is lifted every time the
machining the completion of auto- continuous sewing cycle is completed
matic machining
P2 Number of stitches to be 0 to 8 2 Number of stitches during which the in-
sewn at the beginning termediate presser presses the material
and end of sewing with at the beginning and end of sewing
the intermediate presser
lowered
P3 Thread trimming after Yes/No Yes Thread trimming is carried out every
the completion of auto- time the continuous sewing cycle is
matic machining completed.
P4 Position to which the Origin / secondary Origin "Origin" is the origin of absolute coordi-
needle is returned after origin nates.
the completion of auto-
matic machining "Secondary origin" is the secondary
origin (offset point) added to the pattern.

P5 Whether or not the Yes/No No Whether or not the tension on the

thread tension is re- thread is loosened during jump
quired to be lowered

P173 The presser foot fails Yes/No No The clamp foot is retained while a refer-
to go up even when the ence is being set.
shaft is moved. On the "Main screen", keep the clamp
foot held at its current position while
moving the shaft. (Lifted or lowered)
The "Main screen" is displayed after the
operation panel is started up.
P259 Automatic operation of Yes/No No Whether the cassette clamp is turned
the clamp ON at the beginning of sewing

P240 Clamp operation in prior Yes/No No Whether the cassette clamp is turned
to the manual feed ON before the manual feed is carried
out
P6 Number of stitches to be OFF / 1 / 2 OFF In the case of set value "1" or "2", sew-
sewn with overlapped at ing is carried out once or twice in rep-
the beginning of sewing etition at the first needle entry position
before proceeding to the next needle
entry position at the time of starting the
sewing machine.
Setting of the number of reverse feed
stitches at the beginning of sewing
In the case of "OFF", the sewing ma-
chine does not repeat sewing
P7 Number of stitches to be 0 to 255 0 The thread tension release mechanism
sewn at the beginning is turned OFF while the sewing machine
of sewing without the sews the set number of stitches at the
thread tension release beginning of sewing
mechanism
P147 Height of the interme- 0 to 4 0.5 Intermediate presser height at the be-
diate presser when it is ginning of sewing
lowered at the begin-
ning of sewing
P148 Height of the interme- 0 to 4 0.5 Intermediate presser height at the end
diate presser when it is of sewing
lowered at the end of
sewing
P161 Set presser foot oscil- Normal/Cut by Normal
lating range half/Expand

– 65 –
 Classifi- Stan-
cation of No. Parameter name Range dard Meaning of parameter and comment
parameters value
Automatic P172 Reset the feeding frame Yes/No Yes The middle presser foot motor is reset
machining after completion of at the end of sewing.
work.
P248 Necessity of moving be- Yes/No Yes
fore setting standards

P252 Clamp release error at Yes/No No

reference setting

P794 IO1 of termination work Yes/No No

P796 High level/Low Low level

level

P795 IO2 of termination work Yes/No No

P797 High level/Low Low level

level

Sewing P8 Starting speed of first 100 to 3000 300 Speed of the first needle
start speed hand (sti/min)

P9 Second Hand Start 100 to 3000 600 Speed of the second needle
Speed (sti/min)

P10 Third Hand Start Speed 100 to 3000 900 Speed of the third needle
(sti/min)

P11 Starting speed of 4th 100 to 3000 1500 Speed of the 4th needle
hand (sti/min)

P12 5th Hand Start Speed 100 to 3000 2000 Speed of the fifth needle
(sti/min)

P170 Reverse sewing speed 100 to 3000 1500 Speed of sewing back
(sti/min)

P13 Need for sostoat Yes/No Yes Low speed start

P162 Start sewing 2-needle Yes/No No Whether the second stitch is sewn at a
low speed required/not low speed
required
P163 Sewing finish 2 needle Yes/No No Last 2 stitches slower
low speed required/not
required
Speed P14 Maximum spindle 100 to 4500 3000 Max. spindle speed
Parameter speed (sti/min)

P15 Empty feed speed (mm/ 100 to 40000 40000 Speed of empty feed
min)

P16 Inching speed 100 to 20000 5000 Movement speed when modifying and
(mm/ min) creating patterns
P160 Test sewing speed (mm/ 100 to 60000 5000 Trial sewing speed
min)

P17 Button speed 1 100 to 20000 500 When manually moving a box or collect-
(mm/min) ing a file, use the corresponding eight
directional keys.
Operating speed with icon

– 66 –
 Classifi- Stan-
cation of No. Parameter name Range dard Meaning of parameter and comment
parameters value
Speed P18 Button speed 2 100 to 20000 4000 8 Correspond to the two direction keys
Parameter (mm/min)

Operating speed with icon

P19 Button speed 3 100 to 20000 8000 8 Correspond to the two direction keys
(mm/min)

Operating speed with icon

P217 Graphic edit speed 0-100000 Yes

(mm/min)

P174 Head 2 Speed 0 to 2000 0 Velocity of XY shaft when using a laser

(mm/s) scalpel

P175 Head 3 Speed 0 to 2000 0 Velocity of XY shaft when using a laser

(mm/s) scalpel

P178 Continuous inching Reduce/Mini- Reduce Movement speed when creating a pat-
speed mum/Normal tern

P773 Reverse speed (sti/ 0 to 3000 0 Speed of sewing back

min)

P20 Absence of thread None/OUT1 to None

spreading air wiper OUT8
output IO
P774 Number of stitches for 0 to 30 0 At the end of the figure, the speed is
sewing end speed limit limited from the number of hands from
the end.
P775 Speed of sewing end 100 to 1800 100 This parameter is used in conjunction
speed limit with P774 to obtain a particular velocity
limit.
Clamp P22 Prohibition of sewing Yes/No Yes When the cassette clamp is raised,
setting when the fixture is sewing prohibited.
raised
P23 Sequential order of the Normal/Special Normal
pedal operation

P24 Pedal operation mode 1STA/1STB/ 1STA

1STC/2ST

P25 Sewing start thread 1 to 990 10 Thread grip ON at the start of sewing
gripping start angle

P26 Sewing start thread 1 to 990 10 Thread grip OFF at the start of sewing
gripping end angle

P27 Thread trimmer thread 1 to 990 850 Grip start angle at thread trimming
grip start angle

P28 Thread trimmer thread 1 to 990 50 Grip end angle at thread trimming
grip end angle

P781 Fixture required when Yes/No Yes

moving

P863 Main shaft remains the Yes/No No

same even when mov-
ing the shaft
P743 Double Clamp Open 0 to 5000 0
Delay (ms)

P744 Double Clamp Down 0 to 5000 0

Delay (ms)

P114 Thread clamp type Thread clamp/ Thread

Tension disk clamp
release

– 67 –
 Classifi- Stan-
cation of No. Parameter name Range dard Meaning of parameter and comment
parameters value
Bobbin P29 Bobbin winding state Permit/Prohibit Permis- Bobbin winder
winding sion
setting
Default state

P30 Bobbin winder speed 100 to 4500 800 Bobbin winder speed
(sti/ min)

P31 Thread winding time 1 to 63000 200 Setting the time of the spool
setting (s)

Speed P32 High speed ratio (%) 1 to 100 100

ratio

P33 Medium high speed 1 to 100 100

ratio (%)

P34 Medium low speed ratio 1 to 100 100

(%)

P35 Low speed ratio (%) 1 to 100 100

Reset set- P36 Clamp at reset Yes/No Yes Cassette clamp lowers when returning
ting to origin

P264 Clamp release after Yes/No Yes Press the return button to raise the cas-
manual reset sette clamp when returning to the origin

P38 Origin return method XY simultaneous XY con- "Simultaneous XY " means that origin
/X priority/Y prior- currency resetting starts at the same time, and "X
ity preferred" means that x axis resets the
origin first and Y axis resets the origin.
P39 Home return velocity 100 to 60000 18000 X and Y shaft speed at home return
(mm/ min)

P303 Extended axis reset 1 to 2000 80

operating speed (mm/s)

P756- Output IO setting prior OUT1 to OUT6/ No Setting of pre-recovery IO

to resetting
P761
P762- High level/Low Low level
level
P767
P741 XY axes 0 position No/X axis/Y axis/ No
cushion when resetting XY axes

P216 Reset output IO enable None/OUT1 to None

OUT8

P823 Output IO for resetting Yes/No No

captured graphics is
enabled.
P649 Alarm at reset error Yes/No No

P782- Output IO setting after OUT1 to OUT6/ No

resetting None
P787
P788- Rudder No
P793
Provisional P45 Interval switch type Self lock/Normal Self lock In the case of the "Self lock", the lock
interruption will not be able to automatically bounce
setting when the key is pressed.
In the case of the "Normal", the lock will
be able to automatically bounce when
the key is pressed.
P799 Presser foot lift at stop Yes/No No

– 68 –
 Classifi- Stan-
cation of No. Parameter name Range dard Meaning of parameter and comment
parameters value
Statistical P49 Bottom thread clear Yes/No No Whether to set the remaining bobbin
setting when power is applied thread to 0 when the power is turned on

P50 Work stops after the Yes/No Yes "Yes" stops after the bobbin thread
bobbin thread is used length reaches the full length.
up.
P51 Bobbin thread counter Yes/No Yes "Yes" automatically statistics the length
setting enabled of bobbin thread used when working

P46 Counter clear when Yes/No Yes Is the sewing counter set to 0 when the
energized power is turned on?

P47 Continue work after Yes/No Yes Does the sewing counter continue after
achieving the counter reaching the set value?

P48 Counter setting enabled Yes/No Yes Enable the sewing counter

P52 Work time counter Yes/No Yes "Yes" enables machining-time statistics
function

P779 Bobbin thread count IN1 to IN4/ de- Default Bobbin thread quantity statistics mode
mode fault

P780 Adjustable bobbin 0 to 600000 0 Adjusting the remaining bobbin thread

thread reserve (mm) length

Thread grip P54 Sewing start thread 0 to 200 0 Thread grip position at the start of sew-
setting gripping position ing

P53 Thread trimmer thread 0 to 200 0

clamp position

P212 Conversion point of Yes/No Yes

graphics that are not for
sewing
P627 First pin clamp IO start- None/OUT1 to OUT8
ing OUT12

P477 Screw clamp IO after None/OUT1 to OUT8

sewing OUT12

P824 First stitch starting out- None/OUT1 to OUT8

put IO OUT12

P825 Output IO ON angle 0 to 10000 0

P826 Output IO OFF angle 0 to 10000 0

Thread P55 Automatic thread break- Yes/No Yes "Yes" displays errors by stopping the
breakage age detection operation after detecting thread break-
detection age.
Tread breakage detection function
P57 Ignore the number of 1 to 255 5 The first set stitch count is not detected.
sewing hour hands.

P58 Detection of number 1 to 255 15 If the thread breakage of the set num-
of effective stitches at ber of stitches is detected continuously,
thread breakage it is considered that the thread is broken
securely.
P59 Delay in processing 0.01 to 255 5
when breakage is de-
tected
P929 Number of return stitch- 0 to 20 0
es broken

P935 Broken thread detection mode 1/mode 2 Mode 1

mode

P207 Return to zero when Yes/No No

thread breaks

– 69 –
 Classifi- Stan-
cation of No. Parameter name Range dard Meaning of parameter and comment
parameters value
Thread P697 QEP2 is opened as Yes/No No
breakage the detection of bobbin
detection thread
P237 Thread breakage IO None /OUT1 to None
OUT12

Thread P60 Thread trimmer spindle 10 to 500 180 Spindle speed of thread trimmer
trimming speed (r/min)
setting
P61 Thread trimming start 0.01 to 6.55 0.01 Delay time at thread trimming start
delay (s)
P62 Thread separation du- 0.01 to 6.55 0.15 Wiper operation time
ration (s)

P63 Delay of lifting the 0.01 to 6.55 0.25 Wiper OFF delay
thread take-up presser
foot (s)
P64 Delay in starting the 0 to 6.55 0
thread tension release
(s)
P65 Needle thread trimmer Yes/No Yes Whether to cut the thread when feeding
for automatic air feed- by air
ing after sewing
P66 Wiper use or not Yes/No Yes Using the wiper

P67 Motor thread trimming To-and-fro/Single To-and-

mode time fro

P68 Motor thread trimming 1 to 100 23

stroke

P69 Delay of flat knife 1 to 350 1

thread clamp

P164 Knife return speed ratio 10 to 100 100

P169 Starting mode for Angle / delay Delay Start-up timing method of the thread
thread loosening grip OFF

P168 Thread loosening angle 0 to 999 730 Thread grip OFF angle

Energizing P70 Return the hour hand to Yes/No No When the power is turned on, the posi-
setting the upper stop position. tion of the needle bar is up.

P71 Automatically returns to Yes/No No Automatically returns to the original

the fixture home posi- position at power-on
tion when energized
P73 Presser foot is lifted Yes/No No The feeding frame moves up when the
when energized power is turned on.

P72 Motor lock when ener- Yes/No No

gized

Other set- P74 Air pressure detection Yes/No No If the detected atmospheric pressure is
tings required/not required too low when "Yes" is activated, it stops
and alarms.
P75 Repeated operation Yes/No No Yes starts cyclic processing of the same
required/not required file after startup

P76 Repeated machining 1 to 65535 1440 Stop circulation process after the total
time (min) time and time of circulation machining.

P77 Repeated process inter- 0 to 20 2 Interval between completion of ma-

val (s) chining and restart of machining during
circulation machining

– 70 –
 Classifi- Stan-
cation of No. Parameter name Range dard Meaning of parameter and comment
parameters value
Other set- P78 Work end position End position/Ori- Origin End position: End of point sewing
tings gin/Right/Sewing where all XY axes coordinates are 0
starting position (zero), restoration point
Right: Rightmost point of the process-
ing range

Sewing starting position: First sewing

point of a processing file

Origin: Stop upon completion of pro-

cessing

P395 Template recognition Barcode/Elec- Electronic File sequence number: Bar code identi-
method tronic label label fication mode

File name distinction: Electronic label

recognition mode

P81 Interface style Classic/Simple Classic Classic: Virtual body button style

Simple: Flat button style

P685 Activate the pre-motion XY simultaneous XY con-

mode /X priority/Y prior- currency
ity
P755 Work Hollow Feed X Priority /Y Pri- XY con- Movement mode of idle feed
Mode ority/XY currency

P241 Connect to Extended Yes/No No Yes allows you to view working files and
Screen other data on the display on an external
extended display
P79 Spindle needle stop 0 to 160 0
back

P242 Voice prompt High/Medium/ OFF "High", "Medium" and "Low" indicate
Low/Off the volume level of each sound

P21 Enable power failure Yes/No No After turning on the power again, the
memory progress of sewing before turning off
the power will continue sewing.
P194 File valid when leaving Yes/No No
electronic label

Auxiliary P215 Start sewing Yes/No No

functions
P214 Air blow at the end of Yes/No No
sewing
P213 Continuous air blowing 0 5000
time

P729 Imported graphic is not Yes/No No

arranged at the center
of the graphic
P206 Open output IO transfer None/OUT1 to None
OUT12

P236 Laser output IO None/OUT1 to None

OUT12

P205 Normal laser washing 0 to 63000000 0

time

– 71 –
 4-25. Error Code List

Error Title Details Return method

code
E001 Initialization is not yet • Initialization is not executed when • Press the "Reset" key.
executed turning the power ON
E002 X axis sensor detec- • X axis positioning sensor fault • Check the X axis sensor signal.
tion error • Check to make sure that the cord is not
broken.
• Check the X axis sensor connector for
looseness or disconnection.
E003 Y axis sensor detec- • Y axis positioning sensor fault • Check the Y axis sensor signal.
tion error • Check to make sure that the cord is not
broken.
• Check the Y axis sensor connector for
looseness or disconnection.
E004 Intermediate presser • Intermediate presser shaft positioning • Check the intermediate presser shaft sen-
shaft sensor detection sensor fault sor signal.
error • Check to make sure that the cord is not
broken.
• Check the intermediate presser shaft sen-
sor connector for looseness or disconnec-
tion.
E006 Moving knife shaft • Moving knife shaft positioning sensor • Check the sensor signal.
sensor detection error fault • Check to make sure that the cord is not
broken.
• Check the sensor connector for looseness
or disconnection.
E007 Main shaft motor en- • The main shaft motor encoder signal • Check to make sure that the cord is not
coder error cannot be detected. broken.
• Check the main shaft motor encoder con-
nector for looseness or disconnection.
E020 X axis motor overvolt- • A voltage that is equal to or higher • Check to make sure that the supply voltage
age than the guaranteed voltage is ap- of 92 V or higher is not applied.
plied. • Check to make sure that there is nothing
• Application of an overvoltage has wrong with the power PCB.
damaged the internal circuit.
E021 X axis motor low volt- • A voltage that is equal to or lower • Check to make sure that the supply voltage
age than the guaranteed voltage is ap- of 80 V or lower is not applied.
plied. • Check to make sure that there is nothing
wrong with the power PCB.
E022 X axis motor overcur- • A current that is equal to or higher • Check to make sure that there is nothing
rent (software) than the guaranteed current is ap- wrong with the X axis motor.
plied. • Check to make sure that there is nothing
• Motor is short-circuited by the over- wrong with the power PCB.
current.
E023 X Shaft motor overcur- • A current that is equal to or higher • Check to make sure that there is nothing
rent (software) than the guaranteed current is ap- wrong with the X axis motor.
plied. • Check to make sure that there is nothing
wrong with the power PCB.
E024 X axis motor encoder • The X axis motor encoder signal can- • Check to make sure that the cord is not
error not be detected. broken.
• Check the X axis motor encoder connector
for looseness or disconnection.
E025 Disconnection of the • The connector of the X axis motor • Check the X axis motor output connector
X axis motor output has slipped off. for looseness or disconnection.
connector • The motor current detection circuit is
damaged.
• There is no feed back of the current.

– 72 –
Error Title Details Return method
code
E026 X axis motor overload • The X axis motor fails to rotate. • Check the X axis motor output connector
• The X axis motor or the driver is dam- for looseness or disconnection.
aged. • Check to make sure that the cassette hold-
er moves smoothly.
E028 X axis motor A/D con- • A/D conversion of the X axis fails to • Re-turn the power ON.
version error complete. • Check to make sure that there is nothing
wrong with the MAIN PCB.
E030 Y axis motor overcur- • A voltage that is equal to or higher Check to make sure that the supply voltage
rent than the guaranteed voltage is ap- of 92 V or higher is not applied.
plied. • Check to make sure that there is nothing
• Application of an overvoltage has wrong with the power PCB.
damaged the internal circuit.
E031 Y axis motor low volt- • A voltage that is equal to or lower • Check to make sure that the supply voltage
age than the guaranteed voltage is ap- of 80 V or lower is not applied.
plied. • Check to make sure that there is nothing
wrong with the power PCB.
E032 Y axis motor overcur- • A current that is equal to or higher • Check to make sure that there is nothing
rent (hardware) than the guaranteed current is ap- wrong with the Y axis motor.
plied. • Check to make sure that there is nothing
• Motor is short-circuited by the over- wrong with the power PCB.
current.
E033 Y axis motor overcur- • A current that is equal to or higher • Check to make sure that there is nothing
rent (software) than the guaranteed current is ap- wrong with the Y axis motor.
plied. • Check to make sure that there is nothing
wrong with the power PCB.
E034 Y axis motor encoder • The Y axis motor encoder signal can- • Check to make sure that the cord is not
error not be detected. broken.
• Check the Y axis motor encoder connector
for looseness or disconnection.
E035 Disconnection of the • The connector of the Y axis motor • There is no feed back of the current.
Y axis motor output has slipped off.
connector • The motor current detection circuit is
damaged.
• Check the Y axis motor output con-
nector for looseness or disconnec-
tion.
E036 Y axis motor overload • The Y axis motor fails to rotate. • Check the Y axis motor output connector
• The Y axis motor or the driver is dam- for looseness or disconnection.
aged. • Check to make sure that the linear module
moves smoothly.
E038 Y axis motor A/D con- • A/D conversion of the Y axis fails to • Re-turn the power ON.
version error complete. • Check to make sure that there is nothing
wrong with the MAIN PCB.
E040 Intermediate presser • A voltage that is equal to or higher • Check to make sure that the supply voltage
shaft motor overvolt- than the guaranteed voltage is ap- of 92 V or higher is not applied.
age plied. • Check to make sure that there is nothing
• Application of an overvoltage has wrong with the power PCB.
damaged the internal circuit.
E041 Intermediate presser • A voltage that is equal to or lower • Check to make sure that the supply voltage
shaft motor low volt- than the guaranteed voltage is ap- of 80 V or lower is not applied.
age plied. • Check to make sure that there is nothing
wrong with the power PCB.
E042 Intermediate presser • A current that is equal to or higher • Check to make sure that there is nothing
shaft motor overcur- than the guaranteed current is ap- wrong with the intermediate presser shaft
plied. motor.
rent (hardware)
• Motor is short-circuited by the over- • Check to make sure that there is nothing
current. wrong with the power PCB.

– 73 –
Error Title Details Return method
code
E043 Intermediate presser • A current that is equal to or higher • Check to make sure that there is nothing
shaft motor overcur- than the guaranteed current is de- wrong with the intermediate presser shaft
rent (software) tected. motor.
• Check to make sure that there is nothing
wrong with the power PCB.
E044 Intermediate presser • The intermediate presser shaft motor • Check to make sure that the cord is not
shaft motor encoder encoder signal cannot be detected. broken.
error • Check the intermediate presser shaft motor
encoder connector for looseness or dis-
connection.
E045 Disconnection of the • The connector of the intermediate • There is no feed back of the current.
intermediate presser presser shaft motor has slipped off.
shaft motor connector • The motor current detection circuit is
damaged.
• Check the intermediate presser shaft
motor output connector for looseness
or disconnection.
E046 Intermediate presser • The intermediate presser shaft motor • Check the intermediate presser shaft motor
shaft motor overload fails to rotate. output connector for looseness or discon-
• The intermediate presser shaft motor nection.
or the driver is damaged. • Check to make sure that the intermediate
presser moves smoothly.
E048 Intermediate presser • A/D conversion of the intermediate • Re-turn the power ON.
shaft A/D conversion presser shaft fails to complete. • Check to make sure that there is nothing
error wrong with the MAIN PCB.
E060 Main shaft motor over- • A voltage that is equal to or higher • Check to make that the supply voltage of
voltage than the guaranteed voltage is ap- 400 V or higher is not applied.
plied. • Check to make sure that there is nothing
• Application of an overvoltage has wrong with the power PCB.
damaged the internal circuit.
E061 Main shaft motor low • A voltage that is equal to or lower • Check to make sure that the supply voltage
voltage than the guaranteed voltage is ap- of 180 V or lower is not applied.
plied. • Check to make sure that there is nothing
wrong with the power PCB.
E062 Main shaft motor over- • A current that is equal to or higher • Check to make sure that there is nothing
current (hardware) than the guaranteed current is ap- wrong with the main shaft motor.
plied. • Check to make sure that there is nothing
• Motor is short-circuited by the over- wrong with the power PCB.
current.
E063 Main shaft motor over- • A current that is equal to or higher • Check to make sure that there is nothing
current (software) than the guaranteed current is ap- wrong with the main shaft motor.
plied. • Check to make sure that there is nothing
wrong with the power PCB.
E064 Main shaft motor en- • The main shaft motor encoder signal • Check to make sure that the cord is not
coder error cannot be detected. broken.
• Check the main shaft motor encoder con-
nector for looseness or disconnection.
E065 Main shaft motor rota- • The main shaft motor fails to rotate. • Check the main shaft motor output connec-
tion failure (machine • The main shaft motor or the driver is tor for looseness or disconnection.
lock) damaged. • Check to make sure that the pulley can be
manually turned without a hitch.
E066 Main shaft motor rota- • The main shaft motor fails to rotate. • Check the main shaft motor output connec-
tion failure • The main shaft motor or the driver is tor for looseness or disconnection.
damaged. • Check to make sure that the pulley can be
manually turned without a hitch.

– 74 –
Error Title Details Return method
code
E067 Y axis motor overcur- • A current that is equal to or higher • Check to make sure that there is nothing
rent protection than the guaranteed current is de- wrong with the Y axis motor.
tected. • Check to make sure that there is nothing
wrong with the power PCB.
E068 Y axis motor overcur- • A current that is equal to or higher • Check to make sure that there is nothing
rent (hardware) than the guaranteed current is ap- wrong with the Y axis motor.
plied. • Check to make sure that there is nothing
• Motor is short-circuited by the over- wrong with the power PCB.
current.
E069 Y axis motor A/D con- • A/D conversion of the Y axis fails to • Re-turn the power ON.
version error complete. • Check to make sure that there is nothing
wrong with the servo PCB.
E070 Y axis driver parame- • The parameter set value of the Y axis • Check the parameter of the Y axis driver.
ter error (hardware) driver is wrong.
E071 Y axis driver parame- • The parameter set value of the Y axis • Check the parameter of the Y axis driver.
ter error (software) driver is wrong.
E072 Y axis motor A/D con- • A/D conversion of the Y axis fails to • Re-turn the power ON.
version error complete. • Check to make sure that there is nothing
wrong with the servo PCB.
E073 Disconnection of the • The Y axis motor encoder signal can- • Check to make sure that the cord is not
Y axis motor encoder not be detected. broken.
connector • Check the Y axis motor encoder connector
for looseness or disconnection.
E075 Y axis motor encoder • The Y axis motor encoder (Z phase) • Check to make sure that the cord is not
error (Z phase) cannot be detected. broken.
• Check the Y axis motor encoder connector
for looseness or disconnection.
E079 Y axis motor overload • The Y axis motor fails to rotate. • Check the Y axis motor output connector
• The Y axis motor or the driver is dam- for looseness or disconnection.
aged. • Check to make sure that the linear module
moves smoothly.
E080 Y axis motor driver • An overload on the Y axis driver is • Check the Y axis motor output connector
overload detected. for looseness or disconnection.
• Check to make sure that the linear module
moves smoothly.
E085 Y axis motor deviation • The position deviation of the Y axis • Check to make sure that the linear module
error motor has exceeded the detection moves smoothly.
level.
E088 Y axis motor overcur- • A current that is equal to or higher • Check to make sure that there is nothing
rent error (hardware) than the guaranteed current is ap- wrong with the Y axis motor.
plied. • Check to make sure that there is nothing
wrong with the power PCB.
E110 Y axis motor electronic • Setting of the electronic gear ratio of • Change the Y axis motor.
gear ratio setting error the Y axis motor is wrong.
E112 Main shaft motor • A short-circuit signal of the main shaft • Check to make sure that the main shaft is
short-circuit signal motor is detected. not short-circuited.
detection • Check to make sure that there is nothing
wrong with the power PCB.
E113 Main shaft motor en- • The main shaft motor encoder signal • Check to make sure that the cord is not
coder connector fault cannot be detected. broken.
• Check the main shaft motor encoder con-
nector for looseness or disconnection.
E120 Main shaft motor over- • The main shaft motor fails to rotate. • Check the main shaft motor output connec-
load • The main shaft motor or the driver is tor for looseness or disconnection.
damaged. • Check to make sure that the pulley can be
manually turned without a hitch.

– 75 –
Error Title Details Return method
code
E121 Main shaft motor driv- • An overload on the main shaft motor • Check the main shaft motor output connec-
er overload is detected. tor for looseness or disconnection.
• Check to make sure that the pulley can be
manually turned without a hitch.
E125 Main shaft motor pow- • A voltage that is equal to or lower • Check to make sure that the supply voltage
er low voltage than the guaranteed voltage is ap- of 180 V or lower is not applied.
plied to the main power supply of the • Check to make sure that there is nothing
main shaft motor. wrong with the power PCB.
E140 1 Main shaft motor • A short-circuit signal of the main shaft • Check to make sure that the main shaft is
short-circuit signal motor is detected. not short-circuited.
detection • Check to make sure that there is nothing
wrong with the power PCB.
E142 1 Main shaft motor A/ • A/D conversion of the main shaft fails • Re-turn the power ON.
D conversion error to complete. • Check to make sure that there is nothing
wrong with the servo PCB.
E144 Parameter fault detec- • Setting parameter is defective.
tion (software driver)
E146 1 Main shaft motor • The main shaft motor encoder signal • Check to make sure that the cord is not
encoder connector cannot be detected. broken.
fault • Check the main shaft motor encoder con-
nector for looseness or disconnection.
E149 1 Main shaft motor • A voltage that is equal to or lower • Check to make sure that the supply voltage
power low voltage than the guaranteed voltage is ap- of 180 V or lower is not applied.
plied to the main power supply of the • Check to make sure that there is nothing
main shaft motor. wrong with the power PCB.
E203 Main shaft motor mal- • The main shaft motor fails to operate • Check to make sure that the version of the
function properly. driver is the latest one.
• Turn the pulley to check to make sure that
the main shaft motor runs without a hitch.
• Check to make sure that the main haft mo-
tor encoder connector is properly connect-
ed.
• Check to make sure that the main shaft
motor output connector is connected cor-
rectly.
E204 Main shaft motor re- • The main shaft motor rotates in the • Check the main shaft motor encoder con-
verse rotation direction opposite to the specified nector for looseness or disconnection.
direction. • Check to make sure that the main shaft
motor output connector is connected cor-
rectly.
E205 Cassette holder lifting • The cassette holder is in its upper • Lower the cassette holder.
position.
E206 I/O PCB failure • The I/O PCB has failed. • Check the connector that connects the I/
O PCB and MAIN PCB for looseness or
disconnection.
• Change the I/O PCB.
E207 I/O signal timeout • There is a timeout for the signal from • Carry out an "output test" to check the sig-
the I/O PCB. nal.
• Check the no-signal connector for loose-
ness or disconnection.
E208 Drop in air pressure • The air presser has dropped. • Check the air pressure.
• Check the air presser sensor connector for
looseness or disconnection.
E210 Intermediate presser • The origin position of the intermediate • Check the origin adjustment of the interme-
misalignment error presser is wrong. diate presser.

– 76 –
Error Title Details Return method
code
E213 Thread breakage de- • Thread breakage is detected. • Turn the power OFF. Check to make sure
tection error that the thread take-up spring moves
smoothly.
E214 Sewing counter reach- • The sewing counter has reached the • Reset the sewing counter.
ing the set value set value.
E215 Bobbin thread counter • The bobbin thread counter has • Reset the bobbin thread counter.
reaching the set value reached the set value.
E216 Number of stitches • The number of stitches has exceeded • Re-examine the pattern data.
limit error the limit value.
E217 Pattern data read • Pattern data that is not supported is • Examine the pattern data.
failure used.
• The pattern data is corrupted.
E218 Pattern data read • There is a timeout during reading of • Re-examine the pattern data.
timeout the pattern data.
E219 MAIN PCB error (ex- • A defect has occurred in the MAIN • Change the MAIN PCB.
ceptional condition) PCB.
E220 Incompatible update • The update file that is not supported • Check the update file.
file is used.
• The update file is corrupted.
E221 Update execution error • The update file that is not supported • Check the update file.
is used.
• The update file is corrupted.
E222 Updating not yet exe- • Updating has not been executed. • Execute updating.
cuted
E224 Abnormal communica- • The I/O PCB fails to communicate • Check to make sure that the cord is not
tion between the I/O with the MAIN PCB. broken.
PCB and MAIN PCB • Check the connectors of the MAIN PCB
and I/O PCB for looseness or disconnec-
tion.
E225 Abnormal communi- • The operation panel fails to commu- • Check to make sure that the cord is not
cation between the nicate with the MAIN PCB. broken.
operation panel and • Check the connectors of the MAIN PCB
MAIN PCB and operation panel for looseness or dis-
connection.
E226 Update file corruption • The update file is corrupted. • Check the update file.
E227 Abnormal communi- • The operation panel fails to com- • Check to make sure that the cord is not
cation between the municate with the MAIN PCB when broken.
operation panel and transferring a file. • Check the connectors of the MAIN PCB
MAIN PCB (during file and operation panel for looseness or dis-
transfer) connection.
E228 Pattern data size is • You have attempted to create pattern • Re-examine the pattern data.
too large data that exceeds the the number of
stitches and data volume the equip-
ment can handle.
E229 Too large angle be- • The angle between stitches is too • Re-examine the pattern data.
tween stitches large.
E230 Pattern data reading • Pattern data is being read. • Wait for a while. (This is not an error.)
E231 Intermediate presser • The intermediate presser motor fails • Check the intermediate presser shaft motor
shaft motor overload to rotate. output connector for looseness or discon-
• The intermediate presser motor or nection.
the driver is damaged. • Check to make sure that the intermediate
presser moves smoothly.
E232 No insertion of exter- • No medium is inserted. • Check to make sure that the medium is
nal medium inserted correctly.

– 77 –
Error Title Details Return method
code
E233 Read & write error • Data cannot be read from the medi- • Check the data in the medium.
(external medium con- um. • Check to make sure that the medium is
• Data cannot be written on the medi- data-writable.
nection)
um.
E234 Sewing area exceed- • The sewing data has exceeded the • Re-examine the pattern data.
ed possible range of sewing.

E235 File compatibility error • The file is not compatible. • Check the file type.
E236 MAIN PCB memory • Memory error on the power PCB is • Change the MAIN PCB.
corruption detected.

E237 Password not yet set • A password is not yet set. • Set a password.
E238 Unsupported editing • Unsupported operation is contained • Re-examine the pattern data.
in the pattern data.
E240 Abnormal communi- • The operation panel fails to commu- • Check to make sure that the cord is not
cation between the nicate with the MAIN PCB. broken.
• Check the connectors of the MAIN PCB
operation panel and
and operation panel for looseness or dis-
MAIN PCB connection.
E241 Timing setting error • Setting of the timing is wrong. • Re-examine the timing setting.
E242 Workable input I/O • Inoperable input/output settings are • Select "Workable Input IO" and turn off
error turned on. unnecessary input/outputs

E243 Work enable input I/O • Inoperable input/output setting is • Select "Work enable input IO" and place
error placed in ON. unnecessary input/output in OFF.

E244 I/O signal timeout • There is a timeout during waiting for • Carry out an "output test" to check the sig-
the I/O signal execution. nal.
• Check the no-signal connector for loose-
ness or disconnection.
E245 Pattern execution • There is a timeout during waiting for • Re-examine the pattern data.
timeout the pattern data execution.

E246 File name character • The file name has a large number of • Re-examine the file name.
limit error characters.

E247 Intermediate presser • The intermediate presser is in its • Lower the intermediate presser.
lifting upper position.

E248 Cassette holder lifting • The cassette holder is in its upper • Lower the cassette holder.
position.
E249 Cloth cutting knife • The cloth cutting knife is in its upper • Lower the cloth cutting knife.
lifting position.

E250 Punching material

running out
E251 Return-to-origin error • The origin position cannot be • Check to make sure that the X axis origin is
reached. correctly adjusted.
• Check to make sure that the Y axis origin is
correctly adjusted.
• Check to make sure that the intermediate
presser shaft origin is correctly adjusted.

E252 Cloth cutting knife • The cloth cutting knife motor fails to • Check the cloth cutting knife connector for
motor overload rotate. looseness or disconnection.
• The cloth cutting knife motor or the • Check to make sure that the cloth cutting
driver is damaged. knife moves smoothly.
E400 Abnormal communica- The driver fails to communicate with
tion between the driver the MAIN PCB.
and MAIN PCB

– 78 –
Error Title Details Return method
code
E401 Overcurrent protection • A current that is equal to or higher • Check to make sure that there is nothing
detection (driver) than the guaranteed current is de- wrong with the motor.
tected. • Check to make sure that there is nothing
wrong with the power PCB.
E404 Parameter fault detec- • Setting parameter is defective.
tion (hardware driver)
E405 Parameter fault detec- • Setting parameter is defective.
tion (software driver)
E406 A/D conversion error • A/D conversion fails to complete. • Re-turn the power ON.
detection (driver) • Check to make sure that there is nothing
wrong with the driver.
E407 Encoder connector • The encoder signal cannot be detect- • Check to make sure that the cord is not
fault detection (driver) ed. broken.
• Check the motor encoder connector for
looseness or disconnection.
E408 Encoder error signal • The encoder (A and B phases) can- • Check to make sure that the cord is not
detection (AB phase not be detected. broken.
driver) • Check the motor encoder connector for
looseness or disconnection.
E410 Power supply part low • A voltage that is equal to or lower • Check to make sure that the supply voltage
voltage detection (driv- than the guaranteed voltage is ap- of 92 V or higher is not applied.
er) plied. • Check to make sure that there is nothing
wrong with the power PCB.
E411 Power supply part • A current that is equal to or higher • Check to make sure that the supply voltage
overvoltage detection than the guaranteed current is ap- of 180 V% or lower is not applied.
(driver) plied. • Check to make sure that there is nothing
• Motor is short-circuited by the over- wrong with the power PCB.
current.
E413 Motor overload detec- • The motor fails to rotate. • Check the motor output connector for
tion (driver) • The motor or the driver is damaged. looseness or disconnection.
• Check to make sure that the cassette hold-
er moves smoothly.
E414 Driver overload detec- • An overload on the driver is detected.
tion (driver)
E418 Motor overspeed de- • The number of revolutions of the mo- • Check to make sure that the cord is not
tection (driver) tor has exceeded the detection level. broken.
• Check the motor output connector for
looseness or disconnection.
• Check the motor encoder connector for
looseness or disconnection.
E419 Motor position devi- • The position deviation of the motor • Check to make sure that the motor runs
ation error detection has exceeded the detection level. without a hitch.
(driver)
E427 Detection of system
mismatch between
the motor and the
driver(driver)
E428 Return-to-origin error • The motor fails to return to its origin.
detection (driver)
E429 Power supply fault
detection (driver)
E444 Motor electronic gear • The setting of the motor electronic • Change the motor.
ratio is out of range gear ratio is wrong.
(driver)

– 79 –
Error Title Details Return method
code
E448 Motor overload (driver) • The motor fails to rotate. • Check the motor output connector for
• The motor or the driver is damaged. looseness or disconnection.
• Check to make sure that the cassette hold-
er moves smoothly.
E449 Driver overload signal • The motor fails to rotate. • Check the motor output connector for
detection (driver) • The motor or the driver is damaged. looseness or disconnection.
• Check to make sure that the cassette hold-
er moves smoothly.
E450 Motor position devi- • The position deviation of the motor • Check to make sure that the motor runs
ation error detection has exceeded the detection level. without a hitch.
(driver)
E452 Positive-direction • The movement amount of the motor • Return the cassette holder to its home
movement limit detec- in the positive direction has exceed- position.
tion (driver) ed the limit.
E453 Negative-direction • The movement amount of the motor • Return the cassette holder to its home
movement limit detec- in the negative direction has exceed- position.
tion (driver) ed the limit.
E478 Motor A/D conversion
error (driver)

Instruction file error list

Error code Description of error Solution
W001 The top plate cover is opened. Put the cover on the top plate.
W002 Re-confirm that the template is not clamped. "Make sure that the template is securely
clamped.
If this error occurs even when the template
is clamped, re-adjust the position of the Auto
switch referring to "3-1-10. Adjusting the
position of the Auto switch" p.28. (Only for
the A type)"
W003 The safety cover is opened. Put the safety cover in place.
W004 Check the X axis error driver. Check the state of the X axis driver.
W005 Lubricate Add grease.
The number of days to be elapsed before the
warning is given is set in the parameter file con-
taining the grease-related data. So, if addition of
grease is not necessary, press the "OK".

– 80 –
5. MAINTENANCE OF SAWING MACHINE

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine. In addition, attach the covers which have been removed before operation
back in place.

No. Region Explanation Operating time

1 The area under the throat plate, area Clean up the surface of equipment Eight hours
surrounding the hook, bobbin case with a tool such as an air gun. In
and its inner portion, thread trimming particular, clean up the regions in
area, needle bar area, areas inside which the aforementioned thread
and outside of the presser foot, waste, thread end and other stains
openings of the electronic control are likely to remain.
box such as air inlet and outlet, and
the regions in which thread waste,
thread end and other stains are likely
to remain.

2 Apply grease to the upper and lower 1. Loosen screws ❶ of the face Operation for 720 hours
bushing of the needle bar. plate. Then, remove the face
plate.
2. Loosen and remove screw ❷
❶ of the needle bar upper bush-
ing and screw ❸ of the needle
bar lower bushing.
3. While aligning the lubricating
hole of the grease gun with the
tapped holes in the needle-bar
upper and lower bushings,
pour the grease.
❷ 4. The amount of the grease
should not be smaller than 0.5
cm3.
5. After the greasing, tighten the
screws of the needle-bar upper
❸ and lower bushings and put
the face plate back into place.
Tighten the screws of the face
plate.
6. Use the JUKI Grease as the lu-
bricating grease. Do not mix it
with other lubricating greases.

– 81 –
No. Region Explanation Operating time
3 Lubricate the hook oil tank. 1. Detach cylinder lifting plate ❶ . If the oil level in the oil
tank drops below the low-
er scale marker, replen-
ish the oil tank with the
accessory (or specified
❶ #10) oil.

2. Press ❷ on the Start screen A

to display the screen B.
Then, press ❸ to display the
screen C. On the screen C,
press ❹ and ❺ to rotate the
bed and move lubricating
rubber ❼ of oil tank ❻ to the
Screen A ❷ outside of the bed.

❸ Screen B

❹ Screen C ❺
❻

– 82 –
No. Region Explanation Operating time
3 3. Remove lubricating rubber ❻ .
Pour the supplied oil (or speci-
fied oil) into the oil tank.
Lubricate up to the upper
marker line.

4. Attach rubber plug ❻ .

MAX

MIN

4 Adding the lubricating oil to the gear 1. Press ❷ on the Start screen A Replenish the gear box
box to display the screen B. with No. 32 white oil if the
Then, press ❸ to display the oil surface shown on the
level gauge falls below
screen C. On the screen C,
the lower scale mark A.
press ❹ and ❺ to rotate the
bed and move lubricating
rubber ❼ of oil tank ❻ to the
outside of the bed.

Screen A ❷

❸ Screen B

❹ Screen C ❺

– 83 –
No. Region Explanation Operating time
4 2. Loosen six fastening screws ❼
❺ and remove gear box cover ❺
and cap ❻ .
❼

3. Pour the #32 oil into the gear

box slowly.

4. The oil surface in the gear box

H線 can be checked through the oil
sight window on the side face
L線 of the frame. Stop pouring of
the lubricating oil when the oil
surface reaches the center part
(between the H and L lines) of
the oil sight window.
5. Attach gear box cover ❺ and
cap ❻ .

– 84 –
 5-1. TROUBLES AND CORRECTIVE MEASURES(SEWING CONDITIONS)

Troubles Cause Measures

1. The needle thread ① Stitches are slipped at the start. ◦ Adjust the clearance provided between the nee-
slips off at the start dle and the hook.
of bar-tacking. ◦ Set soft-start sewing at the beginning of sewing.
② The needle thread remaining on the ◦ Decrease the tension of the thread tension con-
needle after thread trimming is too troller No. 1.
short. ◦ Increase the tension of the thread take-up spring.
◦ Decrease the bobbin thread tension.
③ The bobbin thread is too short. ◦ Increase the clearance between the needle and
the counter knife.
◦ Decrease the needle thread tension at 1st stitch,
④ Needle thread tension at 1st stitch is and extend the duration of the AT operation at
too high. the beginning of sewing.
◦ Make the stitching pitch at 1st stitch longer.
⑤ Stitching pitch at 1st stitch is too small. ◦ Decrease the needle thread tension at 1st stitch.

2. Thread often breaks ① The hook or the inner hook holder has ◦ Remove the hook and grind hook or the inner
or synthetic fiber scratches. hook holder with a fine grind stone or buff them.
thread splits finely. ② The needle hole guide has scratches. ◦ Buff the needle hole guide or replace it with a
new one.
③ Thread enters the groove in the hook. ◦ Detach the hook to remove the thread.
④ The needle thread tension is too high. ◦ Decrease the needle thread tension.
⑤ The tension of the thread take-up ◦ Decrease the tension of the thread take-up
spring is too high. spring.
⑥ The synthetic fiber thread melts due to ◦ Use the optional needle cooler.
heat generated on the needle.
⑦ When taking up the thread, the needle ◦ Check the rough state of needle tip.
tip penetrates the thread. ◦ Use the ball-pointed needle.

3. The needle often ① The needle is bent. ◦ Replace the bent needle.
breaks. ② The needle comes in contact with the ◦ Adjust the position of the intermediate presser.
intermediate presser.
③ The needle is too thin for the material. ◦ Replace it with a thicker needle according to the
material.
④ Clearance between the needle and the ◦ Adjust the clearance between the needle and the
hook is too small. hook.

4. Threads are not ① The counter knife is dull. ◦ Replace the counter knife.
trimmed. ② Knife pressure of the counter knife is ◦ Adjust the knife pressure of the counter knife.
low.
③ The counter knife has been improperly ◦ Correct the position of the counter knife.
positioned.
(Bobbin thread only) ④ The last stitch is skipped. ◦ Correct the timing between the needle and the
hook.
⑤ Bobbin thread tension is too low. ◦ Increase the bobbin thread tension.
⑥ Flopping of cloth ◦ Lower the intermediate presser height.

5. Stitch skipping often ① Clearance provided between the nee- ◦ Adjust the clearance between the needle and the
occurs. dle and the hook is not correct. hook.
② Position of the inner hook holder ◦ Adjust the position of the inner hook holder
against the needle is not correct. against the needle.
③ The needle is bent. ◦ Replace the bent needle.
④ The needle thread after thread trim- ◦ Decrease the tension of the thread take-up
ming is too long. spring.
◦ Increase the tension of the thread tension con-
troller No. 1.

6. The needle thread ① The needle thread tension is not high ◦ Increase the needle thread tension.
comes out on the enough.
wrong side of the ② The needle thread after thread trimming ◦ Increase the tension of the thread tension con-
material. is too long. troller No. 1.

7. Threads break at ① The knife has been improperly posi- ◦ Correct the position of the knife.
time of thread trim- tion.
ming.

– 85 –
 Troubles Cause Measures
8. Thread end of the ① Stitch skipping at the 1st stitch. ◦ Increase the length of needle thread remaining
1st stitch comes out at the needle after thread trimming.
on the right side of ② Needle used and thread used are thick ◦ Change the current intermediate presser with
the material. in terms of the inner diameter of the another one which has a larger inner diameter.
intermediate presser.
③ Intermediate presser is not properly ◦ Adjust the eccentricity between intermediate
positioned in terms of the needle. presser and needle so that needle enters in the
center of intermediate presser.
④ The direction of air blower is incorrect. ◦ Adjust the air-blowing direction of the air blow-
As a result, needle thread at the tip er according to the direction of sewing so that
of needle cannot be clamped with the the needle thread at the tip of needle can be
disc presser. clamped with the disc presser.

9. The needle thread ① The clearance provided between the ◦ Adjust the clearance provided between the inner
is entangled in the inner hook holder and the inner hook hook holder and the inner hook appropriately
inner hook holder. is too small. according to the thickness of needle thread to be
used.

10. The knotting section ① The bobbin runs idle excessively. ◦ Adjust the height of idling prevention spring of
of bobbin thread the bobbin case appropriately.
at 2nd stitch at ② Bobbin thread tension is too low. ◦ Increase the bobbin thread tension.
the sewing start ③ The needle thread tension at 1st stitch ◦ Decrease the needle thread tension at 1st stitch.
appears on the right is too high.
side.

11. The sewing ma- ① The bed fails to rotate. ◦ On the operation panel, select "Menu" and "Ma-
chine is not able chine Param" in the written order. Then, enter
to carry out perfect "11111111" as a password. Then, select "Rotation
stitching. Setting" and set the "Rotation along graph" to
"Yes". Then, set the stitch pitch for sewing pat-
terns again.

– 86 –
 5-2. Disposal of batteries

The operation panel has a built-in battery in order to operate the clock even when the pow-
er is turned OFF. Be sure to dispose of the battery following the local laws and regulations.

■ How to remove the battery

1) Release lock ❶ of the door at the back or side
face of the sewing machine to open the door.

2) Remove cover setscrews ❷ of electrical box

❸
❸ that is located inside the door. Then, detach
the front cover of the electrical box.
❷ ❷

❹
3) Remove four screws ❹ of PCB ❺ . Remove
PCB ❺ .

❻
4) Slide the stopper A of battery ❻ in the direc-
tion of the arrow to remove battery ❻ .

– 87 –
5-3. Replacing the fuse

WARNING :
1. To avoid electrical shock hazards, turn OFF the power and open the control box cover after about
five minutes have passed.
2. Open the control box cover after turning OFF the power without fail. Then, replace with a new fuse
with the specified capacity.

Two fuses are used.

❶ Fuse 250 V 20A (time lag fuse)
JUKI part number: 40292522

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