JUKI SC-922 User manual

ENGLISH
SC-922
INSTRUCTION MANUAL

i
CONTENTS
!. SPECIFICATIONS ..................................................................................... 1
@. SET-UP...................................................................................................... 1
1. Installing to the table..........................................................................................................................1
2. Installing the motor unit.....................................................................................................................2
3. Installing the control box ...................................................................................................................2
4. Installing the belt ................................................................................................................................3
5. Adjusting the pulley cover.................................................................................................................3
6. Installation and adjustment for the protecting pin and the belt slip-off preventing bracket................... 4
7. Connecting the cords.........................................................................................................................5
8. Attaching the connecting rod..........................................................................................................13
9. Setting procedure of the machine head .........................................................................................14
10. Adjusting the machine head (direct-drive motor type sewing machine only) ............................15
#. FOR THE OPERATOR ............................................................................ 16
1. Operating procedure of the sewing machine.................................................................................16
2. Operation panel (CP-18)...................................................................................................................17
3. Operating procedure of the sewing pattern ................................................................................... 18
(1) Reverse feed stitching pattern ......................................................................................................18
(2) Overlapped stitching pattern......................................................................................................... 19
4. One-touch setting .............................................................................................................................20
5. Production support function ...........................................................................................................22
6. Setting of functions of SC-922 ........................................................................................................25
7. Function setting list..........................................................................................................................27
8. Detailed explanation of selection of functions ..............................................................................33
9. Automatic compensation of neutral point of the pedal sensor ................................................... 47
10.Selectionofthepedalspecications..............................................................................................47
11. Setting of the auto lifter function ....................................................................................................48
12. Selecting procedure of the key-lock function................................................................................49
13. Initialization of the setting data .......................................................................................................49
14. External input / output connector ...................................................................................................50
15. How to connect the material edge sensor......................................................................................51
$. MAINTENANCE ...................................................................................... 52
1. Removing the rear cover.................................................................................................................. 52
2. Replacing the fuse............................................................................................................................52
3. Error codes........................................................................................................................................53

– 1 –
ENGLISH
!. SPECIFICATIONS
Supply voltage Single phase 100 to 120V 3-phase 200 to 240V Single phase 220 to 240V
Frequency 50Hz/60Hz 50Hz/60Hz 50Hz/60Hz
Operating envi-
ronment
Temperature : 0 to 40˚C
Humidity : 90% or less
Temperature : 0 to 40˚C
Humidity : 90% or less
Temperature : 0 to 40˚C
Humidity : 90% or less
Input 310VA 310VA 310VA
* The electric power is a reference value for the model equipped with the LU-1510N-7 machine head.
It differs by the selected machine head.
@. SET-UP
The SC-922 can be used with the direct-motor type machine head as a stand-alone control box. It can also
be used with the belt-driven type machine head by installing on the motor unit.
This manual describes the procedure for the aforementioned two setup methods.
This describes the procedure for installing the
SC-922 on the table of the LU-2810-7 sewing ma-
chine. To use any other machine head, install the
control box on the table referring to the Instruction
Manual for the main body of the relevant sewing ma-
chine. Install the control box suspending plate on the
table with mounting bolts supplied with the unit. At
this time, insert the nuts and washers supplied with
the unit as accessories as shown in the gure so that
the motor unit can be securely xed on the table.
1) Press three bolts 1supplied with the unit as ac-
cessories into the motor hanging bolt hole in the
table and x them.
2) Fix suspending plate 5supplied with the unit
on the three bolts with plain washer 2, spring
washer 3and nut 4.
3) Fix rubber 6on the suspending plate with spring
washer 7and nut 8.
4) Hang one end of the control box on the threaded
part of rubber on the side which has two bolts.
Then, hang the other end of the control box on
the opposite side.
5) Temporarily x the other threaded part of rubber
with plain washer 9and nut !0. In this case, the
spring washer is not used.
6) Adjusting the installing position of the control box.
Then, securely tighten the nuts.
1. Installing to the table
To use the SC-922 with the direct-motor type machine head, install the control box on the table according to
the following instruction.
1
1
4
2
3
5
7
8
6
9
!0

– 2 –
1
2. Installing the motor unit
Install the motor unit on the table with the tting bolt
asm. supplied with the unit as accessories.
At this time, insert the nuts and washers supplied
with the unit as accessories as shown in the gure
so that the motor unit can be securely xed on the
table.
1) Press three bolts 1supplied with the unit as ac-
cessories into the motor hanging bolt hole in the
table and x them.
2) Temporarily tighten convex washer, spring
washer and nut on the side where two bolts are
attached.
3) Hang the motor unit to the washer which has
been temporarily tightened, and attach convex
washer, spring washer and nut to the other bolt
on the opposite side.
4) After adjusting the installing position of the motor,
securely tighten the respective nuts.
3. Installing the control box
2) Loosen four screws 2supplied with the mo-
tor unit as accessories, tighten screws 2after
hanging control box unit 3 to the screws, and x
control box unit 3.
Spring washer
Nat
Convex washer
2
3
1
1) Attach bracket 1supplied with the unit using
four supplied screws (M5 x 10) as shown in the
gure.
To use the SC-922 with the belt-drive type machine head, install the control box on the motor unit according
to the following instruction.

– 3 –
ENGLISH
a
b
1
2
1
15mm (9.8N)
4. Installing the belt
1) The belt distance, between sewing machine pul-
ley and motor pulley, must be parallel.
2) The belt tension should be adjusted by turning
the tension adjust nuts 1to change height of the
motor, so that the belt sinks down by about 15
mm (9.8N) when it is depressed by band at the
center of the belt span.
If the belt tension is not tight, speed is unstable
at low-speed or medium-speed operation, and
the needle will not stop exactly in position.
5. Adjusting the pulley cover
1) After adjusting the belt tension, adjust the pulley
cover 1so that the clearances between the belt
and the pulley cover 1, aand bshould be the
same.
2) After the completion of adjustment, tighten screws
2located on the side of pulley cover 1and
securely x the pulley cover 1so that it does not
slip out of position.
1
Belt

– 4 –
A
4
5
B
1
1
23
6. Installation and adjustment for the protecting pin and the belt slip-off preventing
bracket
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
Belt
Attaching
hole A
Attaching
hole B
4 mm or less
Belt
4 mm or less
Adjusting position for protecting pin
Pulley
cover Motor
pulley
3 mm or less
Adjusting position for belt slip-off preventing bracket
Belt
1) Attaching hole for the protecting pin
To attach protecting pin 1, select either attaching
hole Aor attaching hole Bin the motor pulley
cover in accordance with the direction of rotation
of the sewing machine and attach the pin in the
selected hole using screw 2and washer 3sup-
plied with the unit.
a)) If the motor shaft rotates in direction A in the
gure on the above:
/Attach protecting pin 1in attaching hole A.
b) If the motor shaft rotates in direction B in the
gure on the above:
/Attach protecting pin 1in attaching hole B.
2) Adjustment for the protecting pin and the belt
slip-off preventing bracket
Adjust the position of protecting pin 1and belt
slip-off preventing bracket 4in accordance with
the gure on the left.
a) Adjusting the protecting pin
Loosen screw 2and adjust so that protecting
pin 1is positioned at the location indicated
in the gure on the left.
b) Adjusting belt slip-off preventing bracket
Loosen screw 5and adjust so that belt slip-
off preventing bracket 4is positioned at the
location indicated in the gure on the left.
If protecting pin 1is not properly adjusted,
it is possible that your ngers may be caught
in the clearance provided between the pulley
and the belt resulting in injury. If belt slip-off
preventing bracket 4is not properly ad-
justed, it is possible to allow the belt to slip off
causing safety hazard.
3) After the adjustment, tighten screws 2and 5
so as to secure protecting pin 1and belt slip-off
preventing bracket 4to prevent these compo-
nents to uctuate because of vibration.
4) Before starting the operation of the sewing ma-
chine, ascertain that protecting pin 1and belt
slip-off preventing bracket 4do not come in
contact with the pulley and the belt.

– 5 –
ENGLISH
7. Connecting the cords
Following connectors are prepared on the SC-922. Connect the connectors coming from the machine head
to the corresponding places so as to t the devices mounted on the machine head.
1CN30 Motor signal connector
2CN33 Needle bar position detector (+5V type): It
detects the needle bar position.
3
CN36 Machine head solenoid: Provided with solenoids
for thread trimming, reverse feed stitching, one-
touch type reverse feed switch.
4 CN37 Presser foot lifting solenoid (Only for the auto-
matic presser foot lifter type)
5CN38
Operation panel: Various kinds of sewing can be
programmed. (For details of the operation panel
other than CP-18, refer to the Instruction Manual
for the panel to be used.)
6CN39 Standing machine pedal : JUKI standard
PK70, etc. Sewing machine can be controlled
with external signals.
7 CN40 Single-needle control solenoid: It is used with
the LH-4100 sewing machine provided with a
single-needle control device.
8 CN41 Stepping motor: It is used only with the DLU-
5494N-7.
9CN43 Synchronizer (+12V type) : It detects the
needle bar position.
!0 CN44 Hand switch: Hand switch other than the touch-
back switch.
!1
CN48 Safety switch (standard) : When tilting the sew-
ing machine without turning the power OFF, the
operation of the sewing machine is prohibited so
as to protect against danger.
OPTION switch: Input function can be changed by
changing over the internal function with this switch.
!2 CN51 Extended input/output connector
!3 CN55LED lamp (+5 V type): The LED lamp can be
connected optionally. (Refer to "#-4. One-
touch setting" p.20 for how to adjust the
quantity of light.)
!4 CN58 Extended input connector (for the sensor
input, etc.)
!5 CN59 Extended output connector (for the solenoid
valve output)
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 specied 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.
2
1
3 4 7 8
!1 5 6 9!0 !4
!5!2
!3

– 6 –
3) Connect 14P code 4coming
from the machine head to con-
nector 5 (CN36).
When the optional AK device
is attached, connect 2P con-
nector 6 coming from the AK
device to connector 7 (CN37).
Insert connector 8coming
from the detector into connec-
tor 9 (CN33).
 
Connect 9P connector !0 com-
ing from the motor to connector
!1 (CN30) on the circuit board.
Proceed to step 5).
(Caution) WhenusingtheAKdevice,setwhethertousetheAKdeviceafterconrminghowtoselectthe
auto-lifter function. (Refter to “#-11. Setting of the auto lifter function” p. 48.)
2) Loosen screw Bin cover 3with a screwdriver to
open the cover.
For the direct-motor type machine head, proceed
to step 4).
48
6
3
B
9
!0
!1
1
A2
5 7
1) Pass cords 1of the thread trimmer solenoid,
reverse feed solenoid and detector cords 2
through table hole Aand route them under the
table. (Detector cord 2is not provided for the
direct-motor type machine head.)
[For the direct-motor type machine head]
4) Connect 14P cord 4coming
from the machine head to con-
nector 5 (CN36). Connect 2P
connector 6to connector 7
(CN37).
 
Connect 9P connector !0
coming from the motor to con-
nector !1 (CN30) on the circuit
board.
Proceed to step 5).
4
6
!0
!1 5 7
[For the belt-drive type machine head]

– 7 –
ENGLISH
(Caution) Be sure to securely insert the respective connectors after checking the inserting directions
since all connectors have the inserting directions. (When using a type with lock, insert the con-
nectors until they go to the lock.) The sewing machine is not actuated unless the connectors
are inserted properly. In addition, not only the problem of error warning or the like occurs, but
also the sewing machine and the control box are damaged.
[Connecting the connector for the operation panel]
5) The connector for the operation panel is provided.
Paying attention to the orientation of the connec-
tor !2, connect it to connector (CN38) !3 located
on the circuit board. After connecting, securely
lock the connector.
(Caution) Be sure to turn OFF the power before
connecting the connector.
!2
!3
[ Connection of the pedal of standing-work machine ]
6) To use the pedal unit with the sewing machine
for standing work, insert PK70 connector !4 into
connector !5 (CN39: 12P) on the PCB.
(Caution) Be sure to turn OFF the power before
connecting the connector.
!5
!4
7) After inserting the connector, put all cords togeth-
er with cable clip band !6 located on the side of
the box.
(Caution) 1. Fix the cord clamp and the cable clip
band following the attaching proce-
dure.
2. When removing the connector, re-
move it from the wire saddle and
remove it while pressing the hook of
the cable clip band.
!6
[How to bundle all cords]
Howtoxcableclipband How to remove cable clip band
Pushing the
hook portion,
push the band
to remove it.
Pull Push
Push the
hook.
Panel Panel

– 8 –
8) Close cover 3 and fix the cover by tightening
screw Bwith a screwdriver.
(Caution) Take care not to allow the cord to be
caught under cover 3.
3
B
9) Connect connector 4P !7 to connector !
8locat
ed
on the side of the box.
10) Connect motor outpu t cord !9 of the power switch
to connector @0.
Connect motor output cord @1 to connector @2 locat-
ed on the side of the box.
CE 1ø 230V
AC
220V-240V
Installing power switch
Connect power supply cord to the power switch.
[CEspecications]
Single phase 230V : Power supply cords : Brown, Blue,
and green/yellow (ground wire)
Brown
Blue
Green / Yellow
(ground wire)
[ForCEspecicationsonly]
@1
@2
!8
@0
!7
!9

– 9 –
ENGLISH
[Changing over the voltage between 100 V and 200 V]
WARNING :
To prevent personal injuries caused by electric shock hazards or 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
accidents caused by unaccustomed work or electric shock, request the electric expert or engineer of
our dealers when adjusting the electrical components.
By making the following two changes, the SC-922 can
be used with three different power supplies, i.e., single-
phase 100 - 120 V, single-phase 200 to 240 V and
3-phase 200 to 240 V.
* Only the control box which uses PWR-T PCB can
be changed.
1Replacement of the power cords
2 Changing-round of connector 1 on the PWR PCB
1) Turn OFF the power with the power switch after
checking that the sewing machine has stopped.
2) Draw out the power cord from the power receptacle
after checking that the power switch has been turned
OFF. Then wait for 5 minutes or more.
3) Loosen the screws which are used to secure the
rear lid of the control box cover. Carefully open the
rear cover.
4) Changing procedure of the power voltage
(Caution) If the supply power changing is carried
out in a wrong manner, the control box can
break. Be extremely careful when taking the
supply voltage changing procedure.
A. To change over the supply voltage from 200 - 240 V
to 100 - 120 V
¡Change the power cord with the JUKI genuine cord
with the part number (M90355800A0). Change
the earth cord with the one with the part number
(M90345800A0).
¡Change over supply voltage changeover connector
1
mounted on the PWR PCB with the connector for 100 V.
¡Connect the crimp style terminal of AC input cord to
the power plug as shown in the gure A.
B,C. To change over the supply voltage from 100 - 120
V to 200 - 240 V
¡Change the power cord with the JUKI genuine cord
with the part number
（M90175800A0).
¡Change over supply voltage changeover connector
1
mounted on the PWR PCB with the connector for 200 V.
¡
Connect the crimp contact of the AC input cord to the
power plug as illustrated in Fig. B for the 3-phase power
supply or as illustrated in Fig. C for the single-phase one.
5) Before closing the rear lid of the cover, ascertain again
that the relevant parts have been correctly changed
without fail.
6) Close the read lid while pressing it, taking care not to
allow the wiring to be caught between the read lid of
the cover and the main body of the control box. Then,
secure the lid with the screws.
1
2
3
Wiring for the 3-phase 200 V
A
B
C
* The illustration below shows the PWR-T PCB.
The type of PCB differs by destination.
(Plug side)
WHITE
BLACK
RED
GREEN/
YELLOW
WHITE
BLACK
GREEN/
YELLOW
(Plug side)
WHITE
BLACK
RED
GREEN/
YELLOW
WHITE
BLACK
RED
GREEN/
YELLOW
(Plug side)
WHITE
BLACK
RED
GREEN/
YELLOW
GREEN/
YELLOW
1
2
3
WHITE
BLACK
Wiring for the single-phase 100 V
Be sure to connect the wire between 1 and 2.
If it is connected between 1-3 or 2-3, the sewing
machine will be inoperative.
Wiring for the single-phase 200 V
Be sure to connect the wire between 1 and 2.
If it is connected between 1-3 or 2-3, the sewing
machine will be inoperative. (Caution) Be sure to remove the
connector while holding its
locking section with your
ngers. Be extremely care-
ful not to pull the connector
forcibly.
Locking section
(Box side)
(Box side)
(Box side) 1
2
3
1

– 10 –
[In case of using the power switch for LA]
Connect motor output cord @1 to connector @2 locat-
ed on the side of the box.
Installing power switch
Connect power supply cord to the power switch.
[JAspecications]
3-phase 220 V : Power supply cords : black,
white, red and green/yellow
(ground wire)
Single phase 120V : Power supply cords : black,
white, and green/yellow (ground
wire)
JA 3ø 220V
AC
200V-240V
Black
Red
White
Green / Yellow
(ground wire)
JA 1ø 120V
AC
100V-120V
Black
White
Green / Yellow
(ground wire)
When the metallic conduit is used, be sure to change over the power cord section following the steps of pro-
cedure described below.
(Caution) Be sure to carry out this procedure before installing the control box on the machine table.
1
Place the control box with its frame side down on
the machine table as illustrated in the sketch.
2
Loosen screw
B
in underside cover
A
to open
the cover.
A
B
3
Change over the cord shown in the red-line circle
following the steps of procedure described below.
@1
@2

– 11 –
ENGLISH
4
Remove two screws
C
to remove clamping plate
D
from the main body of the control box.
5
Remove connector
E
while holding its locking
section
F
with your ngers.
6
Turn connector
G
to remove the cord locking
section.
7
Loosen nut
H
to remove the connector from
clamping plate
D
.
C
D
E
F
F
G
H
D

– 12 –
8
Put locknut
I
on the power cord and draw out
the cord
J
from inside clamping plate
D
.
9
Install clamping plate
D
back to the control box.
!0
Pass power cord
J
through conduit
K
.
!1
Fix conduit
K
with locknuts
I
with clamping
plate
D
placed between the locknuts.
!2
Close underside cover
A
and secure the cover
with screw
B
.
A
B
I
D
J
K
I
ID
J
J

– 13 –
ENGLISH
8. Attaching the connecting rod
1) Fix connecting rod 1to installing hole Bof pedal
lever 2with nut 3.
2) Installing connecting rod 1to installing hole Awill
lengthen the pedal depressing stroke, and the pedal
operation at a medium speed will be easier.
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and a lapse of 5 minutes or more.
@3
11) Make sure that the power switch is turned OFF and
insert power supply cord coming from the power
switch into the power plug socket.
(Caution) 1. Top end of power supply cord var-
ies in accordance with destination or
supply voltage. Check again the sup-
ply voltage and the voltage designat-
ed on the control box when installing
the switch.
2. Be sure to prepare power plug @3
conformed to the safety standard.
3. Be sure to connect the ground wire (
green / yellow).
@3
1
2
BA
3

– 14 –
9. Setting procedure of the machine head
(Caution) For the operation panel other than CP-18, refer to the Instruction Manual for the operation panel
to be used for the setting procedure of the machine head.
1) Refer to "#-6. Setting of functions
of SC-922" p.25, and call the func-
tion setting No. 95.
2) The type of machine head can be
selected by pressing switch
5
(
switch
6
).
* Refer to the "List of machine heads"
on the separate sheet or the Instruc-
tion Manual for the machine head of
your sewing machine for the type of
the machine head.
3) After selecting the type of machine
head, by pressing switch 3(
switch 4), the step proceeds to
94 or 96, and the display automati-
cally changes to the contents of the
setting corresponding with the type
of machine head.
6
543
6
543
6
543

– 15 –
ENGLISH
10. Adjusting the machine head (direct-drive motor type sewing machine only)
(Caution) 1. When the slip between the marker dot on the handwheel and the concave of the cover is ex-
cessive after thread trimming, adjust the angle of the machine head by the operation below.
2. The machine head parts of which are connector to CN33 or CN43 does not need adjustment.
(Refer to “@-7. Connecting the cords” p. 5.)
1) Simultaneously pressing switch
4and switch 5, turn ON the
power switch.
2) is displayed (A) in the indica-
tor and the mode is changed over to
the adjustment mode.
3) Turn the pulley of the machine head
by hand until the main-shaft reference
signal is detected. At this time, the de-
gree of an angle from the main-shaft
reference signal is displayed on the
indicator B.
(The value is the reference value.)
4) In this state, align marker dot 7on the pulley
with recess 8on the pulley cover.
5) Press switch 6 to nish the
adjustment work. (The value is the
reference value.)
7
8
B
6
543
A
36 54
6
543

– 16 –
4
3
5
12
2
#. FOR THE OPERATOR
1. Operating procedure of the sewing machine
1) Press ON button 1of the power switch to turn
ON the power.
(Caution) If the power indication LED does not
light up even when turning ON the power
switch, immediately turn OFF the power
switch and check the voltage.
In addition, in such a case as this, re-turn
ON the power switch when 2 to 3 min-
utes or more have passed after turning
OFF the power switch.
2) For some machine head installed, the needle bar automatically rotates to its upper position if the needle
bar is not there.
(Caution) WhenthepowertothesewingmachineisturnedONforthersttimeafterinstallation,itmay
require a longer time to get ready for operation since it carries out initialization procedure. In
addition, be sure not to place hands or any other article under the needle since the needle bar
may move when the power is turned ON.
3) When depressing front part 3of the pedal, the
sewing machine rotates at the number of revolu-
tions in accordance with the depressing amount.
When the pedal is returned to the neutral posi-
tion, the sewing machine stops.
4) When lightly depressing back part 4of the
pedal, the presser goes up. (PFL type only)
5) When strongly depressing back part 5of the
pedal, thread trimming is performed.
8) When sewing is completed, press OFF button 2 of
the power switch to turn OFF the power switch after
conrming that the sewing machine has stopped.
7) For some types of the sewing machine heads, re-
verse feed is performed by pressing touch-back
switch 7. (The gure given illustrates the case of
the LU-1510N-7.)
PFL KFL
Presser foot operation
by pedal Enabled Disabled
Pedal depressing depth
for thread trimming Deep Shallow
6) For some types of the sewing machine heads, it
is possible to program various sewing patterns,
using the operation panel, such as the reverse
feed stitching at sewing start and that at sewing
end. When you use CP-18 6with your sewing
machine, refer to "
#
-3. Operating procedure of
the sewing pattern" p.18 for details. When you
use any other operation panel with your sewing
machine, refer to the Instruction Manual for the
respective operation panel. (The gure given il-
lustrates the case of the LU-1510N-7.)
7
6

– 17 –
ENGLISH
2. Operation panel (CP-18)
1 switch : Used for changing over effective/ineffective of the reverse feed stitching pattern.
2 switch: Used for changing over effective/ineffective of the overlapped stitching pattern.
3 switch : Used for conrming the contents of setting and for changing over effective/ineffective of
the reverse feed stitching at sewing start.
4 switch : Used for selecting the process (A, B, C, D) the number of stitches for which is to be
changed.
* The selected process ashes on and off.
5  switch : Used for changing the content of the selected display (ashing section) and for changing
over effective/ineffective of the reverse stitch at sewing end.
6 switch : Used for changing the content of the selected display (ashing section).
7 switch : Used to call the production support function or one-touch setting (by keeping the switch
held pressed for one second).
Indicators Aand B: Various pieces of information are displayed.
LED C : Lights up when the reverse feed stitching pattern is effective.
LED D: Lights up when the overlapped stitching pattern is effective.
LED E: Lights up when the production support function is displayed.
Flashes on and off when invoking the one-touch setting.
3
1
AB
4 5 62
C
D
7
E

– 18 –
3. Operating procedure of the sewing pattern
Without reverse
stitching
Reverse
stitching
Double reverse
stitching
(Caution) 1. For the operation panel other than CP-18, refer to the Instruction Manual for the operation
panel to be used.
2. For some machine heads, reverse-stitching pattern cannot be used.
(1) Reverse feed stitching pattern
Reverse feed stitching at sewing start and reverse feed stitching at sewing end can be separately pro-
grammed.
[Setting procedure of the reverse feed
stitching]
1) Effective/ineffective of the reverse
feed stitching pattern can be changed
over by pressing switch 1.
When the reverse feed stitching pat-
tern is rendered effective, LED C
lights up, the number of stitches of
the reverse feed stitching at sewing
start is displayed on A, and the num-
ber of stitches of the reverse feed
stitching at sewing end is displayed
on indicator B.
2) When the number of reverse feed
stitches display is not ashing on and
off, every press on switch 3
changes over the reverse feed stitch-
ing mode from the "reverse feed
stitching at sewing start," "double
reverse feed stitching at sewing
start" and "no reverse feed stitching
at sewing start."
In addition, every time switch 5
is pressed, the reverse feed stitch-
ing feature changes over from the
reverse feed stitching at sewing end
to the double reverse stitch at sewing
end, then to no reverse feed stitching
at sewing end, in turn.
Select a process (A, B, C or D) the number of stitches for which is to be changed by using switch 4.
The number which is ashing on and off represents the process which is being set.
Change the number of stitches for the selected process by using switch 5and switch 6.
Press switch 3 to conrm the change you have made. (The number of stitches that can be set is 0 to
15.)
(Caution) The sewing machine cannot perform sewing when the display of the number of stitches for a
processisashingonandoff.
6
543
1B
A
27
C
D
6
543
1
27
B
A
C
D