JUKI SC-500 Quick start guide

ENGINEER’S MANUAL
40019500
No.E359-00
SC-500
R

PREFACE
This Engineer’s Manual is written for the technical personnel who are responsible for the service and maintenance
of the machine.
The Instruction Manual for these machines intended for the maintenance personnel and operators at an apparel
factory contains operating instructions in detail. And this manual describes “Standard Adjustment”, Adjustment
Procedures”, “Results of Improper Adjustment”, and other important information which are not covered in the
Instruction Manual.
It is advisable to use the relevant Instruction Manual and Parts List together with this Engineer’s Manual when
carrying out the maintenance of these machines.
This manual gives the “Standard Adjustment” on the former page under which the most basic adjustment value
is described and on the latter page the “Results of Improper Adjustment” under which stitching errors and
troubles arising from mechanical failures and “How To Adjust” are described.

SAFETY DEVICE
Safety devices described below vary in accordance with the destination and specifications.
Power connector cover
Cover to prevent connectors
from electric shock due to
high voltage section.
Power voltage danger label
Cautions for usable power
voltage are described.
Roll-in prevention pin
Pin to prevent roll-in by V belt.
Electric shock danger label
This label indicates that
there is a danger of electric
shock in the cover on which
the label is pasted.
Electric shock danger label
Thislabelindicatesthatthere
is a danger of electric shock
in the cover on which the
label is pasted.
Motor fan cover
Cover to prevent motor
fan from coming in contact
with other components.
-i-
Motor pulley cover
Cover to prevent motor pulley
and V belt from coming in
contact with each other.

CONTENTS
1. SPECIFICATIONS ......................................................................................1
2. OUTLINE ....................................................................................................1
(1) Features ................................................................................................................... 1
3. MODEL CONSTRUCTION .........................................................................1
(1) SC-500 ..................................................................................................................... 1
(2) M-50 ......................................................................................................................... 1
4. CONFIGURATION......................................................................................2
(1) DDL-8700/SC-500/M-50........................................................................................... 2
5. EXPLANATION OF OPTIONAL CONTROL PANEL.................................3
(1) List of control panel of CP-160 ................................................................................. 3
(2) Explanation of control panel CP-160 ........................................................................ 4
(3) Example of application ............................................................................................. 5
6. CONTROL BOX (SC-500) ..........................................................................7
(1) Arrangement of connectors ...................................................................................... 7
(2) How to use the standard operation panel................................................................. 8
(3) Setting for functions of SC-500............................................................................... 13
(4) Function setting list................................................................................................. 15
(5) Detailed explanation of selection of functions ........................................................ 19
(6) Automatic compensation of neutral point of the pedal sensor................................ 30
(7) Initialization of the setting data ............................................................................... 30
7. CHANGING PROCEDURE OF THE PEDAL TYPE.................................31
8. CONNECTING PROCEDURE WITH JUKI OPTIONAL DEVICES ..........32
(1) Bobbin thread remaining amount detection device, AE ......................................... 32
(2) Connection of the pedal of standing-work machine................................................ 32
(3) Setting of the auto lifter function ............................................................................. 33
(4) Connection of the material end sensor (ED) .......................................................... 33
(5) Connecting procedure of CP-160 ........................................................................... 34
9. EXTERNAL INPUT/OUTPUT CONNECTOR
(SIGNAL CONNECTOR FOR EXTENSION)............................................34
10. CONNECTOR CONNECTION DIAGRAM..............................................35
(1) Solenoid for machine head .................................................................................... 35
(2) Solenoid for lifting presser foot ............................................................................... 35
(3) Optional cord .......................................................................................................... 36
11. MAINTENANCE......................................................................................37
(1) Replacing the fuse ................................................................................................. 37
(2) Changing procedure between 100V to 120V and 200V to 240V............................ 39
(3) Control voltage check terminal of CTL circuit board ............................................... 40
12. ERROR CODES .....................................................................................41
(1) Error code list ......................................................................................................... 42
13. BLOCK DIAGRAM .................................................................................43
14. DRAWING OF THE TABLE (FOR DDL-8700).......................................44

−1 −
(1) SC-500
Electric equipment corresponding to new servo motor (for export)
1. SPECIFICATIONS
(1) Features
1) Voltage changeover function of single phase 100 to 120V/3-phase 200 to 240V is provided. (Adapting to
a part of specifications only)
The control box with voltage changeover function can be used either for single phase 100 to 120V or for
3-phase 200 to 240V by replacing the power cord up to the power switch and setting the voltage
changeover connector inside the control box.
2) The operation panel is assembled in the control box as standard and it is possible to operate the machine
with the single unit of the control box.
By connecting the optional operation panel, CP-160, function and operability are further improved.
3) The conventional JUKI optional devices can be used without any adjustment.
However, it is necessary to separately purchase the optional circuit board.
Supply voltage Single phase 100 to 120V 3-phase 200 to 240V Single phase 200 to 240V
Frequency 50 Hz / 60 Hz 50 Hz / 60 Hz 50 Hz / 60 Hz
Operating temperature range Temperature : 0 to 40˚C Temperature : 0 to 40˚C Temperature : 0 to 40˚C
Operating humidity range Humidity : 90% or less Humidity : 90% or less Humidity : 90% or less
Power consumption 390VA 390VA 390VA
(460VA when LZ-228* is used) (460VA when LZ-228* is used) (460VA when LZ-228* is used)
6 Control box classification
S JUS (LA) : Single phase 100 to 120V PFL
D JUS : 3-phase 200 to 240V PFL
K General export : Single phase 200 to 240V PFL
N CE : Single phase 200 to 240V PFL
U China : Single phase 200 to 240V PFL
7 Electric equipment type classification
S Standard
9 Destination spec. classification
A Standard 10 Accessory spec. classification A Standard 11 Delivery voltage classification 4 200 to 240V
4 Voltage classification
D 3-phase 0 to 340V DC 5 to 7 Pulley and belt classification Code Pulley and belt Applicable model
Q41 ø110 : M41 inch DDL-8700-7
* Pulley diameter: outer diameter is indicated.
3. MODEL CONSTRUCTION
9 Destination spec. classification
A Standard, Hong Kong, Singapore
B Europe
D America (including LA)
G China
10 Accessory spec.
classification
A Standard
11 Delivery voltage
classification
4 200 to 240V
(Caution) 1. Power consumption is the mean power consumption when SC-500 is mounted on DDL-8700
in accordance with the operating conditions JUKI settles.
2. Power consumption varies in accordance with the operating conditions and the machine
head on which SC-500 is mounted. So, be careful.
3. There are cases where the momentary maximum power consumption is 1.5 times or more
than the mean power consumption.
2. OUTLINE
(2) M-50
Servo motor for SC-500 (for export)
1 2 3 4 5 6 7 8 9 10 11
S C 5 0 0 - A A 4
1 2 3 4 5 6 7 8 9 10 11
M 5 0 D - A 4

−2 −
4. CONFIGURATION
(1) DDL-8700/SC-500/M-50
1
2
5
4
3
6
7
8
!1
!2
1Power switch
2Control panel
3Synchronizer
4L-shaped thread stand
5PSC box (SC-500)
6Max. speed control knob
7Motor (M-50)
8Operation pedal
9Touch-back switch
!0 Thread wiping (wiper) device
!1 Screw or caster for level adjustment of table / stand
!2 Resistor pack
!0
9

−3 −
5
4
3
5
7
8
9
!0 !1
!2 !3
!4 !5 !7 !8
!6
!9
5. EXPLANATION OF OPTIONAL CONTROL PANEL
1) For the connecting destination of the connector, refer to the item (5) of 8. CONNECTING PROCEDURE
WITH JUKI OPTIONAL DEVICES.
2) By connecting of CP-160, all displays of standard operation panel of SC-500 go off.
However, error code No. is displayed only at the time of occurrence of error.
Description
Power indication LED : Lights up when the power switch is turned ON.
Max. speed limit variable resister : Maximum speed is limited when this resister is moved in the left direction ( ).
Reverse stitching pattern switch : Used for specifying the reverse stitching pattern to be sewn.
Overlapped stitching pattern switch : Used for specifying the overlapped stitching pattern to be sewn.
Constand dimension stitching pattern switch : Used for specifying the constant dimension stitching pattern to be sewn.
Rectangular stitching pattern switch : Used for specifying the rectangular stitching pattern to be sewn.
Automatic reverse stitching at the start of sewing switch : Used for turning ON / OFF the automatic reverse stitching
at the start of sewing.
Automatic reverse stitching at the end of sewing switch : Used for turning ON / OFF the automatic reverse stitching at
the end of sewing.
Automatic double reverse stitching at the start of sewing switch : Used for turning ON / OFF the automatic double
reverse stitching at the start of sewing.
Automatic double reverse stitching at the end of sewing switch : Used for turning ON / OFF the automatic double
reverse stitching at the end of sewing.
Switches for setting the number of stitches : Used for setting the number of stitches to be sewn in processes A through D.
Material edge sensor ON / OFF switch : Rendered effective when the material edge sensor is installed on the machine.
Used for selecting whether or not the material sensor is used during sewing.
One-shot automatic stitching switch : Start the sewing machine with this switch, and the sewing machine will run
automatically until the material edge is detected or the end of the set number of stitches is reached.
Automatic thread trimming switch : When the material edge is detected, the machine will perform thread trimming even
when keeping depressing the front part of the pedal.
Thread trimming prohibition switch : Used for prohibiting thread trimming at any occasion.
Bobbin thread counter : Indicates the amount of bobbin thread while counting it by subtracting from the set value. When
the bobbin thread remaining amount detecting device is installed on the machine, the counter indicates the number of
times of detecting.
Bobbin counter reset switch : Used for returning the value shown on the bobbin thread counter to the initial value.
Bobbin thread amount setting switch : Used for setting the amount of bobbin thread.
Needle up/down compensating switch : Used when performing needle up / down compensating stitching.
No
(1) List of control panel of CP-160 1
2
1
2
3
4
5
6
7
8
9
!1
!2
!3
!4
!5
!6
!7
!8
!9
!0

−4 −
(2) Explanation of control panel CP-160
1) Reverse stitching pattern When the sewing machine performs the free stitching operation, the
machine performs the reverse stitching operation at the start and end of
sewing.
The reverse stitching operation can set the ON and OFF settings.
Furthermore, single and double reverse stitching patterns can be
selected.
Setting of number of stitches or other settings can be performed by
operating the control panel.
A, B, C and D = 0 to 19 stitches
2) Overlapped stitching pattern
The sewing machine repeats the normal stitching and reverse stitching
by the predetermined time, and performs the line bartacking. Then, the
machine makes the thread trimmer actuate and stop to complete the
overlapped stitching procedure.
Change of the number of stitches or the number of times of repetition
can be performed by operating the control panel.
A, B and C = 0 to 19 stitches
D = 0 to 9 times
3) Constant-dimension stitching pattern
The free stitching process in the reverse stitching pattern becomes the
set value of the number of stitches. The sewing machine will automatically
stop (automatically perform thread trimming if the automatic thread
trimming is selected.) after the machine finishes the predetermined
number of stitches in the process of CD.
If the automatic thread trimming is not selected, operate the touch-back
switch after the machine has automatically stopped. Then, the machine
runs at a low speed (stitch compensation operation). Also, if the pedal is
returned to its neutral position and depressed its front part again, the
sewing can be continued regardless of the setting of number of stitches.
Setting of number of stitches or selection of automatic thread trimming
can be performed by operating the control panel.
A and B = 0 to 19 stitches CD = 0 to 500 stitches
4) Rectangular stitching pattern
There are 4 operation steps in the process of constant-dimension stitching
pattern. At each operation step the sewing machine automatically stops
after sewing the predetermined number of stitches. At this time, if the
touch-back switch is operated, the sewing machine runs at a low speed
(stitch compensation operation). Also, in case of the last operation step,
if the pedal is returned to its neutral position and depressed its front part
again, the sewing can be continued regardless of the setting of number
of stitches. However, if the automatic thread trimming is set, the machine
will perform thread trimming. Setting of number of stitches or selection
of automatic thread trimming can be performed by operating the control
panel.
A and B = 0 to 19 stitches C and D = 0 to 99 stitches

−5 −
(3) Example of application
1) When the CP-160 is used together with the material end sensor (ED : optional), it
can be used as a small edge-controller.
(Method) Adjust the position to mark 3of the CP-160, turn ON material end sensor ON/OFF switch !2
of the CP-160, and turn ON mark !3 of the automatic one-shot stitching.
3!2 !3
Caution) Number of rotations of the automatic one-shot stitchig can be changed by the function
setting (No. 38).
2) Label attaching is performed by the automatic one-shot stitching with the CP-160
(Method) Select mark 5on the CP-160, and turn ON mark !3 of the automatic one-shot stitching.
5!3
Explanation) Number of stitches at the section CD can be set up to 500 stitches. If the stitch length is 2 mm,
it is possible to sew approximately 1,000 mm (1 m).
This function can perform the automatic one-shot stitching without using the material end
sensor (ED : optional). Therefore, the sewing machine performs the sewing to the last according
to the sewing pattern even if the label is not located at the end of material when the pedal is
depressed once.
Label
CD
CD

−6 −
3) Seam joining of the reverse feed stitching at the end of sewing (For thick materials)
Especially some sewing machine heads for thick materials are likely to fail joining the seam at the section of
the following figure even if the timing of reverse feed stitching at the end of sewing is compensated.
1At the timing to move to the reverse feed
stitching action, the rotating speed at the section
where the sewing machine is rotated at a low
speed can be changed.
SC-500 function setting No. 64
(0 to 250 rpm changeable)
Example) Use for reference.
Speed
Section of EBT
Section of low
speed
Time
1
Machine head of DDL-8700H (for thick materials)
Stitch length 4 mm
Number of stitches 4 stitches
ITEM No. 64 170 rpm
Machine head of DDL-8700H (for thick materials)
Stitch length 4 mm
Number of stitches 4 stitches
ITEM No. 64 “0” rpm
Condition Condition
Stitch lenth
becomes small.
Stitch
length
slips off.
Standard

−7 −
Following connectors are prepared when loosening the front cover fixing screws Aof SC-500 and opening the
cover. Connect the machine head connectors to the positions corresponding to each other so as to fit the
devices mounted on the machine head.
WARNING :
• To prevent personal injury caused by abrupt start of the sewing machine, carry out the work after
turning OFF the power switch and a lapse of 5 minutes or more.
• To prevent damage of device caused by maloperation and wrong specifications, be sure to connect
all the corresponding connectors to the specified places.
• To prevent personal injury caused by maloperation, be sure to lock the connector with lock.
• As for the details of handling respective devices, read carefully the Instruction Manuals supplied
with the devices before handling the devices.
(1) Arrangement of connectors
A
9
23
1
45
!0
7
!2
OPC circuit board A (asm.)
!3
A
Front cover
68
!1
!4
!5
!6
1CN30 Motor signal connector
2CN32 Machine head connector
3CN33 Needle bar position detector connector
4CN36 Machine head solenoid connector
5CN37 Presser foot lifter solenoid connector
6CN38 CP-160 panel connector
7CN39 Standing machine pedal connector
8CN40 Signal for extension connector
9CN51 Not used
!0 CN52 Not used
!1 CN53 Bobbin thread remaining amount detection solenoid connector
!2 CN189 External interface signal connector
!3 CN59 Bobbin thread count-up output connector
!4 CN55 Material end detection sensor (ED) connector
!5 CN58 Standing machine pedal connector
!6 CN57 Bobbin thread remaining amount detection sensor connector
6. CONTROL BOX (SC-500)

−8 −
1/ switch : Used for determining the contents of setting.
When this switch is pressed, flashing stops and the contents of setting
are determined.
2 / switch : Used for changing the contents of setting.
When this switch is pressed, changeable positions flash on and off.
By pressing the switch, flashing position shifts in the right direction.
3switch : Used for changing the contents of the selected display (flashing
section).When this switch is pressed, the contents of the display
increase.
4switch : Used for changing the contents of the selected display (flashing
section).
When this switch is pressed, the contents of the display decrease.
5PATTERN SELECTION display : The selected pattern is displayed.
6REVERSE STITCHING : Rendered effective when reverse stitching pattern is selected.
AT START display “ ” Without reverse stitching display / “ ” Reverse stitching display/
“ ” Double reverse stitching display
7REVERSE STITCHING : Rendered effective when reverse stitching pattern is selected.
AT END display “ ” Without reverse stitching display / “ ” Reverse stitching display/
“ ” Double reverse stitching display
8NUMBER OF STITCHES display : Number of stitches of reverse stitching or overlapped stitching is
displayed.
9MATERIAL EDGE SENSOR : Lights up when the material edge sensor setting is selected.
display Function setting No. 2
!0 ONE-SHOT AUTOMATIC : Lights up when the one-shot automatic stitching is selected.
STITCHING display Function setting No. 76
!1 AUTOMATIC : Lights up when the automatic thread trimming by depressing the
THREAD TRIMMING display front part of the pedal is selected.
Function setting No. 3
!2 THREAD TRIMMING : Lights up when the thread trimming prohibition is selected.
PROHIBITION display Function setting No. 9
1243
!1 !2
678 9!0
5
(2) How to use the standard operation panel

−9 −
(3) Press switch 3or switch 4and
select the reverse stitching pattern.
Reverse stitching patterns and displays are as
follows.
: Reverse stitching
: Double reverse stitching
: Without reverse stitching
(4) Press / switch 1to make reverse
stitching at end display 7flash on and off, and set
the pattern in the same way as step 3).
[ Setting procedure of the reverse stitching ]
(1) Hold pressing / switch 1, and press
/ switch 2to select the reverse
stitching pattern.
(Every time / switch 2is pressed,
reverse stitching pattern/overlapped stitching
pattern change over alternately.)
(2) Press / switch 1to make reverse
stitching at start display 6flash on and off.
Every time / switch 1is pressed, the
flashing position shifts in the right direction.
(Caution) The sewing machine does not start
in the flashing state.
Operating procedure of the sewing pattern
1. Reverse stitching pattern
Reverse stitching patterns below can be set by using the operation panel.
Reverse stitching patterns that can be set
Reverse stitching
at start display
Sewing pattern
A
Overlapped stitching pattern
Reverse stitching pattern
B
DCDC
A
B
A
BB
A
D
C
D
C
A
B
A
B
A
B
D
C
D
C
D
C
D
C
D
C
A
B
A
B
1
21 2
1
Shift direction
Flash
Contents of reverse
stitching slection
updating with swith3
3
4
7
6
7
6Flash
updating with swith4
1
Reverse stitching
at end display

−10 −
2. Overlapped stitching pattern
Overlapped stitching patterns below can be set by using the operation panel.
A :Number of stitches of normal stitching setting
0 to 15 stitches
B :Number of stitches of reverse stitching setting
0 to 15 stitches
C :Number of stitches of normal stitching setting
0 to 15 stitches
D : Number of times of repetition
0 to 9 times
(Caution) When process D is set to 5 times, the
sewing is repeated as A /B /C /B /C.
[Setting procedure of the overlapped stitching]
(1) Hold pressing / switch1, and press
/ switch 2to select the overlapped stitching
pattern.
(Every time / switch 2is pressed,
reverse stitching pattern/overlapped stitching
pattern change over alternately.)
(2) The number of stitches for process A becomes in
flashing state.
(3) Every time / switch 1is pressed, the
flashing position shifts in the right direction and the
display of the process where setting can be
changed flashes on and off.
(4) Press switch 3or switch 4to
change the number of stitches.
(5) When the setting of all processes has been
completed, press / switch 2to
determine the contents of the setting. (Flashing
stops.)
(Caution) When the overlapped stitching is
selected, the automatic operation display
flashes on and off. It is not possible to
release the automatic operation.
(5) Press / switch 1to make number of
stitches display 6flash on and off, and set the
number of stitches for the respective processes of
the stitching.
(6) Press switch 3or switch 4to
change the number of stitches.
The number of stitches can be changed up to as
many as 15 stitches for the A, B, C, and D
processes respectively.
However, displays are as follows.
10 stitches = A, 11 stitches = b, 12 stitches = c, 13
stitches = d, 14 stitches =E and 15 stitches = F
(7) When the setting of all items has been completed,
press / switch 2to determine the
contents of the setting. (Flashing stops.)
1
243
8
A
B
C
B
C
D
1
212
1
243
6
Overlapped stitching pattern
Reverse stitching pattern

−11 −
13 4
a
a
13
13 4
13
4
3. Special setting
For material end sensor function, automatic thread trimming function, one-shot automatic stitching function and thread
trimming prohibition function which are displayed in the front panel, it is possible to change the set value by directly
moving to the function setting mode while the power is turned ON in addition to the normal function setting procedure.
[ Moving procedure to the function setting mode ]
(1) Hold pressing / switch 1, and press
switch 3to move to the function setting
mode.
(Caution) Function setting No. 2 is displayed
immediately after the changeover.
(2) When returning to the normal mode, press /
switch 2and determine the contents of
the setting.
1) Material end sensor function setting (Function
setting No. 2)
It is rendered effective when connecting the
optional material end sensor.
It is possible to change the set value with
switch 3or switch 4
0 : Material end sensor function is prohibited.
1 : Material end sensor function is effective.
When "1" is selected, material
end sensor display lights up
when the mode has returned to
the normal one.
2) Thread trimming operation after material end stop
setting (Function setting No. 3)
Press / switch 1to advance to the
function setting No. 3.
It is possible to change the set value with
switch 3or switch 4.
0 : Material end stop
1 : Automatic thread trimming after detection
of material end
When "1" is selected, the
automatic thread trimming
display lights up when the mode
is returned to the normal one.
3) Number of stitches to stop the sewing machine after
detection of material end setting (Function setting
No. 4)
Press / switch 1to advance to the
function setting No. 4.
It is possible to change the set value with
switch 3or switch 4.
Specified number of stitches : 0 to 19 stitches
2

−12 −
a
a
13 4
13 4
4) One-shot automatic stitching setting function
(Function setting No. 76)
Press / switch 1to advance to the
function setting No. 76.
It is possible to change the set value with
switch 3or switch 4.
0 : Pedal designated speed is prior.
1 : Automatic operation
(Caution) 1. It is rendered effective when the
material end sensor function is set.
It is not possible to prohibit the
one-shot operation at the time of
the verlapped stitching operation.
2. Speed of rotation is the speed set
at the function setting No. 38.
When "1" is selected, the one-
shot automatic stitching display
lights up when the mode is
returned to the normal one.
5) Thread trimming prohibition function setting
(Function setting No. 9)
Thread trimming operation at normal stitching and
overlapped stitching can be prohibited by selecting
the thread trimming prohibition.
Press / switch 1to advance to the
function setting No. 9.
It is possible to change the set value with
switch 3or switch 4.
0 : Thread trimming is effective.
1 : Thread trimming is prohibited.
When "1" is selected, the thread
trimming prohibition display lights
up when the mode is returned to
the normal one.
(Caution) When the specified number of stitches
is insufficient, there is a case where the
sewing machine cannot stop within the
specified number of stitches depending on
the speed of rotation of the sewing
machine.

−13 −
Functions can be selected and specified by means of the four setting switches and light emitting diode
located inside the front cover of the SC-500.
(Caution) 1. Do not perform switch operations other than those described in the following explanations.
2. Be sure to re-turn the power switch ON after one second or more has passed. If the power
is turned ON immediately after turning it OFF, the sewing machine may not work normally.
In this case, turn ON the power again.
How to change over to the function setting modo
(1) Turn OFF the power to the unit.
(2) Pressing switch 4, turn ON the power to the unit.
(3) Indication 5,6 will be shown on the display. (If
the indication fails to change, re-perform the
procedures 1) and 2).
1234
5
6
4
4
1Switch for entering specified value changed
and updating setting No. in DOWN direction
2Switch for entering specified value changed
and updating setting No. in UP direction
Specified value
Specified No.
3Down switch (DOWN)
4Up switch (UP)
(3) Setting for functions of SC-500

−14 −
(4) When you want to advance the setting No., press
switch 2to advance the setting No.
When you want to return the setting No., press
switch 1to return the setting No.
(Caution) 1. When switch 1 (switch 2) is held
pressing, the setting No. will return
(will advance) continuously.
2. When the setting No. is advanced
(returned), the contents which are
before by one (after by one) will be
determined. So, be careful when
changing the contents (up/down
switch is touched).
EXAMPLE) CHANGING THE FLICKER
REDUCING FUNCTION (SETTING No. 5)
Press switch 2five times to set the setting No. to “5”.
Press switch 4five times to change the set No. to “5”
since the current set value is displayed on LED 5.
(Standard : “0”)
(Caution) Keep pressing switch 4or switch 3,
and the setting vaue can be changed
continuously.
(5) When the change has been completed, press
switch 1or 2to specify the changed value.
(Caution)
1. When turning OFF the power before
performing this work, the contents
which have been changed are not
updated.
2. Press switch 1, and screen display will
change to the contents of the setting No.
which is before by one.
3. Press switch 2, and screen display will
change to the contents of next setting
No. After completing the operation, turn
OFF the power and turn ON the power
again to return to the normal operation.
After completing the operation, turn OFF the power
and turn ON the power again to return to the normal
operation.
2
1
2
14
3
5
2
14
3
5
Specified
No.

−15 −
* Functions with * (asterisk) are those for maintenance. Be very careful of changing the set value.
Indication of
function setting
Item
Soft start
function
Material end
sensor function
Thread trimming
function by
material end
sensor
Number of
stitches for
material end
sensor
Flicker
reducing
function
Bobbin thread
counting
function
Unit of bobbin
thread
counting down
Number of
rotation of
reverse feed
stitching
Thread
trimming
prohibiting
function
Setting of
needle bar
stop position
when the
sewing
machine stops.
Click sound of
key switch
mounted on
PSC
Optinal switch
function
selection
Function of
prohibiting start
of the sewing
machine by
bobbin thread
counter
Sewing
counter
Number of times
of detection of
run-out of bobbin
thread remaining
amount
Function of
neutral presser
lifting
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
21
Setting
range
0 to 9
(Stitches)
0/1
0/1
0 to 19
(Stitches)
0 to 8
0/1
0 to 2
150 to 3,000
(r.p.m.)
0/1
0/1
0/1
0 to 8
0 to 2
0/1
0 to 19
0/1
Description
The number of stitches to be sewn at a low speed when the soft-start
function is used at the start of sewing.
0 : Soft-start function is not operative.
Material end sensor function (used in case of without panel).
0 : Material end detection function is not operative.
1 : After detecting material end, the specified number of stitches (No.
4) will be sewn, and the sewing machine will stop.
Thread trimming function by material end sensor (used in case of without
panel).
0 : Automatic thread trimming function after detection of material end
is not operative.
1 : After detecting material end, the specified number of stitches (No.
4) will be sewn, and the sewing machine will stop and perform
automatic thread trimming.
Number of stitches for material end sensor (used in case of without panel).
Number of stitches from detection of material end to stop of the sewing
machine.
Flicker reducing function (If the hand lamp flickers).
0 : Flicker reducing function is not operative.
1 : Less effective 8 : Highly effective
Bobbin thread counting function
0 : Bobbin thread counting function is not operative.
1 : Bobbin thread counting function is operative.
Unit of bobbin thread counting down
0 : Count/10 stitches
1 : Count/15 stitches
2 : Count/20 stitches
Sewing speed of reverse feed stitching
Thread trimming prohibiting function (used in case of without panel).
0 : Thread trimming prohibiting function is not operative.
1 : Thread trimming is prohibited.
(Output of solenoid is prohibited. : Thread trimmer and wiper)
Position of needle bar is specified when the sewing machine stops.
0 : Predetermined lowest position
1 : Predetermined highest position
Click sound of key switch mounted on PSC is specified.
0 : Click is not operative.
1 : Click is operative.
Switching of function of optional switch.
0 : No function
1 : Needle up/down compensating stitching
2 : Back compensating stitching
3 : Function of canceling once reverse feed stitching at the end of sewing
4 : Thread trimming function
5 : Presser foot lifting function
6 : One stitch compensating stitching
7 : Function of simultaneously canceling reverse feed stitching at the
start and end of sewing
8 : Presser foot lifting function when pedal is neutral
Functionof prohibiting startof the sewingmachine by bobbinthread counting
0 : When counting is out (-1 or less) Function of prohibiting start of the
sewing machine is not operative.
1 : When counting is out (-1 or less) Function of prohibiting start of the
sewing machine after thread trimming is operative.
2 : When counting is out (-1 or less), the sewing machine stops once.
Function of prohibiting start of the sewing machine after thread
trimming is operative.
Counting function of sewing (number of completion of process)
0 : Sewing counter function is not operative.
1 : Sewing counter function is operative.
Number of times of detection of run-out of bobbin thread remaining amount
0 : Function of bobbin thread remaining amount is not operative.
1 to 19 : Number of times during which the signal is not made even if
run-out of bobbin thread remaining amount is detected.
Function of lifting presser foot when the pedal is in neutral position.
0 : Function of neutral automatic presser lifting is not operative.
1 : Selection of function of neutral presser lifting.
Ref.
page
19
19
19
19
19
19
19
19
20
20
26
20
20
30
45
50
81900
11 1
12 0
14 1
1 0
20
61
70
90
10 0
13 0
15 1
21 0
(4) Function setting list
*

−16 −
38
39
40
41
42
43
One-shot
speed
Pedal stroke at
the start of
rotation
Low speed
section of
pedal
Starting
position of
lifting presser
foot by pedal
Starting
position of
lowering
presser foot
Pedal stroke 2
for starting
thread trimming
One-shot speed (The max. value depends on the number of rotation of
the sewing machine head.)
Position where the sewing machine starts rotating from pedal neutral
position (Pedal stroke)
Position where the sewing machine starts accelerating from pedal neutral
position (Pedal stroke)
Position where the cloth presser starts lifting from pedal neutral position
(Pedal stroke)
Starting position of lowering presser foot
Stroke from the neutral position
Position 2 where the thread trimming starts from pedal neutral position
(When the function of lifting presser foot by pedal is provided.) (Pedal
stroke)
150 to MAX
(r.p.m.)
10 to 50
(0.1 mm)
10 to 100
(0.1 mm)
–60 to –10
(0.1mm)
8 to 50
(0.1 mm)
–60 to –10
(0.1 mm)
*
Item
Function of
changeover of
compensating
switch on the
operation panel
function
Function of fine
adjustment of
number of
rotation
Thread
trimming
motion
condition
Function of
setting the
holding force
after stop
Function of
setting the
reaction force
at the time of
retry
Suction time of
the first start of
the back
solenoid
Function of
reverse feed
stitching on the
way
Number of
stitches of
reverse feed
stitching on the
way
Effective
condition of
reverse feed
stitching on the
way when the
sewing
machine is
stopping.
Thread
trimming
function by
reverse feed
stitching on the
way
Number of
rotation at a
low speed
Number of
rotation of soft-
start
No.
22
24
25
26
27
29
30
31
32
33
35
37
Setting
range
0/1
–1.5% to
1.5%
(0.1 %)
0/1
0 to 9
0 to 15
50 to 300
(ms)
0/1
0 to 19
(Stitches)
0/1
0/1
150 to 250
(r.p.m.)
150 to MAX
(r.p.m.)
Description
Function of needle up/down compensating switch on the operation panel
can be changed.
0 : Needle up/down compensation
1 : One stitch compensation
Number of rotation can be compensated.
Be sure to normally use this function with "0".
This function sets the thread trimming motion after DOWN position has
been off by turning handwheel by hand.
0 : Thread trimming after turning handwheel by hand is permitted.
1 : Thread trimming after turning handwheel by hand is prohibited.
This function prevents the sewing machine from the reverse rotation after it
has stopped.
0 : Initial value
1 : Less effective /9 : Highly effective
This function sets the magnitude of return force of the needle bar before
the retry motion.
1 : Less return force /15 : High return force
This function sets the suction motion time of the back-tack solenoid.
50 ms to 300 ms
Function of reverse feed stitching on the way
0 : Function of reverse stitching on the way is not operative.
1 : Function of reverse feed stitching on the way is operative.
Number of stitches of reverse feed stitching on the way.
Effective condition of reverse feed stitching on the way
0 : Function is not operative when the sewing machine stops.
1 : Function is operative when the sewing machine stops.
Thread trimming function by reverse feed stitching on the way
0 : Automatic thread trimming function after completion of reverse feed
stitching on the way is not operative.
1 : Automatic thread trimming after completion of reverse feed stitching
on the way is performed.
Lowest speed by pedal
Sewing speed at the start of sewing (soft-start)(The max. value depends
on the number of rotation of the sewing machine head.)
Ref.
page
21
29
21
21
21
21
22
22
22
22
28
19
23
27
27
27
27
27
*
Indication of
function setting
24 0
25 1
26 0
22 0
27 3
29 250
30 0
31 4
32 0
33 0
35 200
37 800
38 2500
39 30
40 60
41 –21
42 10
43 –51
*
*
*
*
*
*
* Functions with * (asterisk) are those for maintenance. Be very careful of changing the set value.