mechanical adjustment

SERVICE MANUAL

SEWING MACHINE

MODEL

385.19001890

NOVEMBER,1998

CONTENTS

WIRING DIAGRAM ....................................................................................

GENERAL TROUBLE SHOOTING PROCEDURE .........................................

WHAT TO DO WHEN ..............

ELECTRONIC QUICK CHECK .............................................................

MAIN KEY FUNCTION ..............................................................................

WINDING THE BOBBIN .............................................................................

THREADING THE MACHINE .....................................................................

WHEN MESSAGES APPEAR ON THE SCREEN .........................................

TO SETTHE FABRIC INTHE EMBROIDERY HOOP ....................................

SERVICE ACCESS

FACE COVER ..............................................................................

TOP COVER ................................................................................

BELTCOVER ................................................................................

BASE COVER ...............................................................................

BED COVER ................................................................................

FRONT COVER ............................................................................

MECHANICAL ADJUSTMENT

CLEARANCE BETWEEN NEEDLE AND HOOK ............................

BACKLASH (LOWER SHAFT GEAR) ............................................

FEED DOG HEIGHT ................................................................

TENSION RELEASE MECHANISM ................................................

STRETCH STITCH FEED BALANCE ...............................................

*HEIGHT OF EMBROIDERY PRESSER FOOT (P)............................

PRESSER BAR HEIGHT AND ALIGNMENT ...................................

OVER LOAD (1), (2) ...............................................................

41

42-43

*ADJUSTMENT OF TOUCH PANEL ...............

............................................

44

*BOBBIN THREAD TENSION (1),(2) .....................................................

PART REMOVAL AND REPLACEMENT

45-46

NEEDLE THREAD TENSION UNIT ..................................................

FEED DOG ...................................................................................

THREADER PLATE .........................................................................

C-BOARD UNIT AND FUSE ..........................................................

TRANSFORMER ...........................................................................

MACHINE SOCKET UNIT .............................................................

47

48

49

50

51

52

A-BOARD UNIT ............................................................................

LCD UNIT .....................................................................................

F-BOARD UNIT .............................................................................

SLIDE VOLUME UNIT ....................................................................

DC MOTOR UNIT AND BELT TENSION ........................................

*CARRIAGE

PLATE COVER UNIT ..................................................

*BUI-IONHOLE

SENSOR ................................................................

*UPPER SHAFT SENSOR .................................................................

*ZIGZAG

STEPPING MOTOR ........................................................

53

54

55

56

57

58

59

60

61

*FEED STEPPING MOTOR .............................................................

62

*HOW 1O FIXA THREAD JAMMING ON THE THREAD TAKE-UP LEVER ............. 63

CHECKING ELECTRONIC PARTS

*MACHINE

SOCKET ......................................................................

64

*C-BOARD

....................................................................................

*F-BOARD UNIT .............................................................................

*DC MOTOR .................................................................................

*FOOT CONTROL ........... : .............................................................

*STEPPING MOTORS .....................................................................

CARE .....................................................................................................

OILING ....................................................................................................

SPECIAL TOOLS REQUIRED ...................................................................

68

69

69

70

71

65

66

67

*NEW ITEM

SEWING MACHIN E DIV. 20 MODEL 385.19001890

(A) GENERAL SPECIFICATIONS

I. TYPE:

2. CONVERTIBILITY:

3. SHUTTLESYSTEM:

4. STITCH PACKAGE:

BUILT-IN STITCH:

5. ELECTRONIC AUTOMATIC

BUI-rONHOLER:

6. BOBBIN WINDING SYSTEM:

7. THREADING SYSTEM:

8. PRESSERFOOT SYSTEM:

9. MACHINE COLOR:

10. NEEDLE POSITION:

11. EMBROIDERY SIZE:

12. DROP FEED DOG:

13. THREAD TENSION MECHANISM:

14. FEED BALANCE DIAL:

15. FOOT FIXING SYSTEM:

16. CONTROL:

16-1. STITCH WIDTH:

16-2. STITCH LENGTH:

16-3. PAl-tERN SELECTION:

16-4. MEMORY:

16-5. CLEAR:

17. FUNCTION KEY:

17-t. STARTSTOP KEY:

SPECIFICATIONS

MODEL 385.19001890

FREEARM, TWO IN ONE

(CONVENTIONAL AND EMBROIDERY)

EXTENSION TABLE

HORIZONTAL FULL ROTARY SHU_LE

65 PLUS 840 BUILT-INMONOGRAMS

65

10 (UTILITY)

33

21

(STRETCH)

(DECORATIVE)

1 (DARNING)

840 (MONOGRAMS)

5 STYLES

REGULAR (SQUARE) X 3

ROUND

KEY HOLE

AUTOMATLC CLUTCH

(AUTO DECLUTCH TYPE)

SLIT TAKE-UP LEVER

HIGH BAR

WHITE (J-N47)

7MM / MULTIPLE NEEDLE POSITIONS

126 MM (5") X 90 MM (3.5")

DROP FEED SYSTEM

CONCEALED

BUILT-IN

SNAP-ON/OFF SYSTEM

ELECTRONIC TOUCH CONTROL PANEL AND

ADJUSTMENT

TOUCH SCREEN SYSTEM

PRE-PROGRAMMED,

ALSO MANUALLY ADJUSTABLE

TOUCH SCREEN SYSTEM

PRE-PROGRAMMED,

ALSO MANUALLY ADJUSTABLE

TOUCH SCREEN SYSTEM

TOUCH SCREEN SYSTEM

(EMBROIDERY ONLY)

TOUCH SCREEN SYSTEM

(EMBROIDERY ONLY)

PUSH BU_ON SYSTEM

(EMBROIDERY ONLY)

18. NEEDLE UP & DOWN:

19.

REVERSESTITCH:

20. LCD (LIQUID CRYSTAL DISPLAY):

21. HORIZONTAL SPOOL PIN:

22. CARRY HANDLE:

23. BOBBIN COVER PLATE:

24. ADJUSTABLE PRESSERFOOT TENSION:

25. ACCESSORIES:

SEAM RIPPER/BUTTONHOLE OPENER

LARGE SCREW DRIVER

PLASTIC BOBBIN

STRAIGHT STITCH FOOT (H)

SATIN STITCH FOOT (F)

ZIPPER FOOT (E)

BLIND HEM FOOT (G)

OVEREDGE FOOT (C)

SPOOL PIN FELT

QUILTER

SPOOL STAND

NEEDLE SET

ADDITIONAL SPOOL PIN

SPOOL HOLDER (LARGE)

SPOOL HOLDER (SMALL)

LINT BRUSH

AUTOMATIC BH FOOT (R)

EMBROIDERY FOOT (P)

EMBROIDERY SCISSORS

EMBROIDERY HOOP (ROUND)

STARTERKIT

MEMORY CARD: SMALL FLOWER SERIES

26. OPTIONAL MEMORY CARDS:

*FLOWER SERIES

*HOLIDAY SERIES

*LITTLEGREY RABBIT

*CHILDREN'S SERIES

*MOTOR SPORTS SERIES

*WILD ANIMAL SERIES

*SPECIAL OCCASION SERIES

*FRUITAND VEGETABLE SERIES

*DOG SERIES

*BIG FLORAL SERIES

*FLORAL SCRIPT SERIES

PUSH BUTTON SYSTEM

PUSH BUTTON SYSTEM

YES

YES

YES

POP UP TYPE

DIAL TYPE (3 POSITIONS)

56O4O61O4

820832005

102261103

823801015

822804118

829801002

820817015

822801001

102403109

802422002

829803004

650807008

625031500

822020503

822019509

802424004

753801004

830810031

822814007

834809006

834812002

834811001

K-1 (834401004)

K-2 (834402005)

K-3 (834403006)

K-4 (834404007)

K-5 (834405008)

K-6 (834406009)

K-7 (834407000)

K-8 (834411007)

K-9

K-10

K-11

(834412008)

(834448003)

(834449004)

*MUSICAL INSTRUMENT SERIES

*FLORAL ART AND QUILTING DESIGNS

*SEWING-RELATED DESIGNS

*OCEAN LIFE DESIGNS

*CHRISTMAS DESIGNS I

*CHRISTMAS DESIGNS 1I

*CUIWORK DESIGNS

*FARM DESIGNS

*WILD LIFE & FISHING DESIGNS

*ANGEL DESIGNS

*BIRD DESIGNS

*THREE-LETTERMONOGRAM DESIGNS

*BORDER DESIGNS

*FLORAL DESIGNS ]

*GOBELIN STITCH FLORAL DESIGNS

*NOAH'S ARK DESIGNS ], 11"

27.

SPECIFICATION OF

MICRO-COMPUTER:

28. DRIVING MOTOR:

29. FOOT CONTROL:

30. STEPPING MOTOR:

31. MAXIMUM SPEED:

32. NEEDLE THREADING:

33. THREAD TENSION:

34, HARD COVER:

K-12 (8344500O8

K-101 (834408001

K-

102 (834409002

K-103 (834410006

K-104 (834451009

K-105 (834520000

K-106 (834471005

K- 107 (834472006

K- 108 (834473007

K-109 (834474008

K-110 (834475009

K-111 (834476000

K-112 (834481008

K-113 (834482009

K-114 (834483000

K-115 (834484001

CPU:

ROM

RAM

8M BITS

256K BITS

VRAM 64K BITS

DC MOTOR

ELECTRONIC FOOT CONTROL

ZlG-ZAG WIDTH CONTROL

FEEDING CONTROL

EMBROIDERY HOOP CONTROL (X-AXIS)

EMBROIDERY HOOP CONTROL (Y-AXIS)

820 RPM

500 RPM

700 RPM

(STRAIGHT STITCH)

(AUTOMATIC BUI-rONHOLE)

(OTHER STITCHES)

400 PRM (EMBROIDERY)

INTEGRATED NEEDLE THREADER

SEMI-AUTO TENSION CONTROL

(ROLLER TYPE)

YES

3

MODEL 385.19001890

SEWING MACHINE DIV. 20

(B) STITCH PACKAGE DETAIL

1. TOTAL STITCHES:

2. BUILT-IN STITCHES:

UTILITY:

STRETCH:

DECORATIVE:

DARNING

3. BUILT-IN MONOGRAM

65

60

10

33

21

1

840

UTILITY

' I 4

STRETCH DECORATIVE

BUTi'ONHOLE

O

HI

Hi

HI

Ill

L7

) l

E )

_:) n i !, l

I T

)1

0 0

g

DARNING

El I

3

:>

I

III lU

X

X

4

SEWING MACHINE DIV. 20 MODEL 385.19001890

WIRING DIAGRAM

NAME OF ELECTRONIC PARTSAND WIRING

NOTE:

EACH CONNECTOR SHOULD BE CONNECTED AS FOLLOWS;

(A)-(A),(B)-(B),(C)-(C),(D)-(D),(E)-(E),(F)-(F),(G)-(G),(H)-(H),(J)-(J),(K)-(K)

(L)-(L),(M)-(M),(N)-(N),(O)-(O),(P)-(P).

(A): UPPER SHAFT SENSOR

(B): MACHINE SOCKET UNIT (SECONDARY)

(C): DC MOTOR

(D): ZIGZAG WIDTH STEPPING MOTOR

(E): FEED STEPPING MOTOR

(F): X-AXIS EMBROIDERY STEPPING MOTOR

(G):Y-AXIS EMBROIDERY STEPPING MOTOR

(H): LCD MODULE

(I): F-BOARD

(J): BuYrONHOLE SENSOR

(K): LAMP

(L): TENSION RELEASESOLENOID

(M): C-BOARD

(N): MACHINE SOCKET UNIT (PRIMARY)

(O): TRANSFORMER (SECONDARY)

(P): TRANSFORMER (PRIMARY)

(Q): INVERTER

(R): SLIDE VOLUME

(S): THREAD TENSION SENSOR

(T): LCD (BACK LIGHT)

5

(N)

SEWING MACHINE DIV. 20 MODEL 385. ] 9001890

GENERALTROUBLESHOOTING PROCEDURE

(MACHINE OOESN"TWORK WELL)

CORRECT IT

START

BASIC CHECK

*IS NEEDLESETOK ?

...... *IS POWER SUPPLY OK ?

*IS THREADING

OK ?

>10'K'

MECHANICAL

} } ELECTRICAL } } CAN'TJUDGE

_t

(

O,K.

ADJUSTMENT

SEWING CHECK I

ELECTRIC QUICK CHECK

_N.G,

REPLACE PARTS

ELECTRIC QUICK CHECK l END

6


WHAT TO DO WHEN

CONDITION

1.

SKIPPING

STITCHES

CAUSE

1, NEEDLE IS NOT INSERTED

PROPERLY.

HOW TO FIX

INSERTTHE NEEDLE PROPERLY.

2.

NEEDLE IS BENT OR WORN.

CHANGE THE NEEDLE.

RETHREAD.

3.

INCORRECTLY THREADED,

4.

NEEDLE ORTHREAD ARE

INAPPROPRIATE FOR

FABRIC BEING SEWN.

5, SEWING ON STRETCH

FABRIC

USETHE RECOMMENDED

SEWING NEEDLE AND

THREAD,

USEA#11 BLUETIP NEEDLE.

REFERENCE

6, PRESSERFOOT PRESSURE

IS TOO WEAK.

ADJUST THE PRESSERDIAL TO

MAKE THE PRESSURE

STRONGER.

7.

INAPPROPRIATE NEEDLE

BAR HEIGHT

SEE MECHANICAL

ADJUSTMENT

"NEEDLE BAR HEIGHT".

P. 26 - 27

8.

INAPPROPRIATE NEEDLE TO

SHUI-rLE TIMING

SEE MECHANICAL

ADJUSTMENT "NEEDLETO

SHUTTLETIMING".

P. 28 - 29

9.

INAPPROPRIATE NEEDLE TO

SHUYi-LECLEARANCE

SEE MECHANICAL

ADJUSTMENT "CLEARANCE

BETWEEN NEEDLE AND HOOK".

R 30

10. STABILIZERIS NOT BEING

USED WITH STRETCHOR FINE

FABRICS.

USESTABILIZER.

P. 18

(EMBROIDERY

ONLY)

11. FABRIC IS NOT SETPROP-

ERLYON EMBROIDERY

HOOP.

PLACE THE FABRIC TIGHTLY IN

THE EMBROIDERY HOOP(NO

LOOSE FABRIC),

12. SEWING WHILE PRESSERBAr,

LIFTERIS RAISED

SEW WITH THE PRESSERBAR

LIFTERDOWN,

E18

[EMBROIDERY

ONLY)

2.

FABRIC NOT

MOVING

,

PRESSERFOOT PRESSURE

ISTOO WEAK.

ADJUST THE PRESSERDIAL TO

MAKE THE PRESSURE

STRONGER.

CONVENTIONA

_'_VINGONLY)

.

INCORRECT FEED DOG

HEIGHT.

SEE MECHANICAL

ADJUSTMENT "FEED DOG

HEIGHT".

P. 32 - 33

CONVENTIONA

•"_/ING ONLY)

3.

FEED DOG IS IN DOWN

POSITION.

RAISE THE FEED DOG.

CONVENTIONA

EWING

ONLY)

*ALL ITEMSAREAPPLICABLETO BOTHCONVENTIONALAND

EMBROIDERY SEWING WHERE OTHERWISE SPECIFIED.

7


CONDITION

3.

BREAKING

UPPER

THREAD

CAUSE

HOW TO FIX

4.

THREAD ON BO1-POM SIDE

OF FABRIC ISJAMMED UP.

MAKE SURE TO BRING

BOTH NEEDLE AND BOBBIN

THREADS UNDER THE FOOT

WHEN STARTING SEWING.

5.

FEED DOG TEETHARE

WORN.

CHANGE THE FEED DOG.

REFERENCE

P. 48

(CONVENTIONAl

SEWING ONLY)

1.

INITIAL SEWNG SPEED IS

TOO FAST.

STARTWITH MEDIUM SPEED.

CONVENTIONAL

IEWlNG ONLY)

2.

THREAD PATH IS INCORRECT USETHE PROPER THREAD PATH

R 15-16

3.

NEEDLE IS BENT OR DULL.

REPLACE WITH A NEW NEEDLE

4.

NEEDLE THREAD TENSION IS

TOO TIGHTE.

SEE MECHANICAL

ADJUSTMENT "NEEDLE THREAD

TENSION."

R 39

5, NEEDLE SIZE IS

INAPPROPRIATE FOR

FABRIC,

USE APPROPRIATE NEEDLE

FOR FABRIC AND THREAD

IN USE,

6, NEEDLE EYE IS WORN.

7.

NEEDLE HOLE IN NEEDLE

PLATEWORN OR BURRED.

CHANGE THE NEEDLE.

REPLACE THE NEEDLE PLATE.

+

WHEN STARTING TO SEW,

THE NEEDLE THREAD IS NOT

SECURED BY THE THREAD

HOLDER,

PLACE THE THREAD IN THE

THREAD HOLDER.

(EMBROIDERY

ONLY)

9.

IN EMBROIDERY SEWING,

THE PATrERN IS BEING SEWN

OVER ANOTHER PAl-FERN.

LEAVE SUFFICIENT SPACE BE-

FORE SEWING SECOND PAT-

TERN.

EMBROIDERY

ONLY)

10, AFTER CHANGING THE

NEEDLE THREAD, IT JAMS

AROUND THE SPOOL PIN.

CLEAR OUT THE JAMMING

THREAD,

11. WHEN NEEDLE THREAD IS

CHANGED, THREAD IS NOT

GUIDED INTO THE THREAD

TAKE-UP LEVER.

THREAD THE TAKE-UP LEVER

CORRECTLY.

R16

P, 16

CONDITION

4, BREAKING

BOBBIN

THREAD

CAUSE

HOW TO FIX

THREAD BOBBIN HOLDER

CORRECTLY.

WOUNDONTHEBOBBIN.

ADJUST THE POSITION OF

STOPPER.

CLEAN THE SHUTTLE.

LOW.

CHANGE TO A HIGH QUALITY

SEWING THREAD.

CLEAR OUT THE JAMMING

THREAD.

REFERENCE

P. 15

E 69

5. NEEDLE

BREAKS

SEE MECHANICAL

ADJUSTMENT "NEEDLE

POSITION".

CHANGE THE NEEDLE.

SHUTTLE.

SEE MECHANICAL

ADJUSTMENT "CLEARANCE

BETWEEN NEEDLE AND

HOOK".

,

.

THE FABRIC MOVES WHILE

THE NEEDLE IS PIERCING IT,

OR THE NEEDLE ZIGZAGS

WHILE IN FABRIC.

' SEE MECHANICAL

ADJUSTMENT "UPPER SHAFT

SHIELD PLATE POSITION".

FABRIC IS BEING PULLED

TOO STRONGLY WHILE

SEWING.

GUIDE THE FABRIC GENTLY

WHILE SEWING.

P. 25

P.

30

:CONVENTIONA

_'WING ONLY)

P. 34

CONVENTIONA

EWINGONLY)

.

THE NEEDLE THREAD

TENSION IS TOO TIGHTE.

SEE MECHANICAL

ADJUSTMENT "NEEDLE THREAD

TENSION,'

P. 39

17.

IN EMBROIDERY SEWING,

THE PATTERN IS BEING SEWN

OVER ANOTHER PATTERN.

LEAVE SUFFICIENT SPACE

BEFORE SEWING SECOND

PAI_ERN.

(EMBROIDERY

ONLY)

9


CONDITION

6.

NOISY

OPERATION

7.

PAI"[ERN

DISTORTION

CAUSE

1.

BACKLASH BE[WEEN

SHUI_LE HOOK GEAR AND

LOWER SHAFT GEAR IS

TOO GREAT.

HOW TO FIX

SEE MECHANICAL

ADJUSTMENT '" BACKLASH

(LOWER SHAFT GEAR)".

,

LOWER SHAFT GEAR IS

LOOSE.

ELIMINATE THE LOOSENESS.

3, INAPPROPRIATE BELT

TENSION

4.

NOT ENOUGH OIL

SEE PART REMOVAL AND

REPLACEMENT "DC MOTOR

UNIT AND BELTTENSION'".

OIL ALL MOVING PARTS.

REFERENCE

E 31

P. 57

P. 7O

1.

.

INAPPROPRIATE FEED

BALANCE

INAPPROPRIATE ZIGZAG

SYNCHRONIZATION

,

UPPER THREAD TENSION IS

TOO STRONG.

SEE MECHANICAL

ADJUSTMENT " STRETCH

STITCH FEED BALANCE ".

P. 37

[CONVENTIONA

SEWINGONLY)

SEE MECHANICAL

ADJUSTMENT " UPPER SHAFT

SHIELD PLATE POSITION'".

R 34

(CONVENTIONA

BEING ONLY)

SEE MECHANICAL

ADJUSTMENT "NEEDLE

THREAD TENSION",

R 39

USE EMBROIDERY FOOT.

(EMBROIDERY

ONlY)

.

EMBROIDERY FOOT IS NOT

BEING USED.

5.

STABILIZERIS NOT BEING

USED WITH STRETCHOR

FINE FABRICS.

.

THE FABRIC IS NOT SET

PROPERLY ON THE

EMBROIDERY HOOP.

USE STABILIZER.

R18

(EMBROIDERY

ONLY)

PLACE THE FABRIC TIGHTLY

IN THE EMBROIDERY HOOP

(NO LOOSE FABRIC).

SETTHE EXTENSION TABLE

CORRECTLY.

R18

(EMBROIDERY

ONLY)

.

EXTENSION TABLEIS NOT

SETCORRECTLY.

8.

EMBROIDERY FOOT

CATCHES THE

CONNECTING THREAD.

.

FABRIC IS TOO SMALL FOR

EMBROIDERY HOOP.

CUT THE CONNECTING

THREAD WHEN CHANGING

THE COLOR OF THREAD.

USEA PIECE OF FABRIC

LARGER THAN HOOP.

(EMBROIDERY

ON{Y)

R18

(EMBROIDERY

ONLY)

8.

UPPER

THREAD

LOOPING

.

UPPER THREAD TENSION IS

TOO LOOSE.

SEE MECHANICAL

ADJUSTMENT "NEEDLE THREAE

TENSION."

P, 39

10


ELECTRONIC QUICK CHECK

I.CHECKING

TURN THE POWER SWITCH ON.

*IF NOTHING HAPPENS ON THE MACHINE;FIRST, REPLACE THE FUSE(SEE PAGE 50)

1.

CHECK ALL WIRE CONNECTIONS (SEE PAGE 5),

2.

CHECK THE C-BOARD (SEE PAGE 50).

CHECK THE TRANSFORMER (SEE PAGE 51).

CHECK THE SOCKET (SEE PAGE 52),

IF THE C-BOARD,TRANSFORMER AND SOCKET ARE ALL OK, AND

NOTHING HAPPENS ON THE MACHINE, REPLACE THE A-BOARD (SEE PAGE 53).

*IF SEWING LIGHT DOES NOT TURN ON;

1.

CHECK THE FILAMENT IN THE LIGHT BULB.

IF THE FILAMENT IS BROKEN, REPLACE THE LIGHT BULB.

2.

IF LIGHT BULB IS OK, AND LIGHT STILLDOES NOT TURN ON, REPLACE

THE A-BOARD (SEE PAGE 53).

*IF LCD DOES NOT TURN ON;

1, TURN THE SCREEN SHARPNESS ADJUSTMENT DIAL.

2.

IF LCD STILLDOES NOT SHOW ANYTHING, REPLACE THE A-BOARD FIRST.IF

LCD STILLDOES NOT TURN ON, REPLACE THE LCD.

*IF LCD SHOWS NOTHING;

1.

REPLACE A-BOARD FIRST.IF LCD STILLSHOWS NOTHING, REPLACE THE LCD.

2.PREPARATION

_BECAREFUL IN CHECKING ALL OPERATIONS SINCE THE MACHINE MAY

SUDDENLY STARTRUNNING,

1. TURN THE POWER SWITCH OFF,

2.

SETTHE BOBBIN WINDER SPINDLE TO THE LEFT,

3.

RAISE THE FEED DOG.

4.

SHIFTSPEED SETTING SLIDE LEVER TO THE LEFT.

5.

DETACH THE PRESSERFOOTAND RAISE THE PRESSERFOOT LIFTER.

6.

MOVE THE NEEDLE BAR TO THE UP POSITION.

7, CONNECT THE FOOT CONTROL.

8.

LOWERTHE BH LEVER,

11


ELECTRONICQUICK CHECK

CHECK OPERATION

*THIS QUICK CHECK MUST BE PERFORMED IN THE SEQUENCE SHOWN.FOLLOW

EACH STEP

CAREFULL,DO NOT SKIP ANY PROCEDURE.

*ON THE FOLLOWING STEPS

.PRESS UP/DOWN NEEDLE BuYroN IF CORRECT CONDITION FOR NEXT STEP.

.PRESS AUTO-LOCK BUTTON IF DEFECT CONDITION.

STEP

01) BUZZER

02) UP/DOWN

NEEDLE

BuYroN,

AUTO-LOCK

BUTTON,

REVERSE

BuYroN, AND

START/STOP

BUI_ON TEST

03) LCD UNIT

04) BUBBIN

WINDER

SWITCH TEST

05) SPEED SET-

TiNG SLIDE

LEVERTEST

06) FOOT

CONTROLLEi_

TEST

TEST

TURN ON THE

POWER SWITCH

WHILE PRESSING

REVERSE BU_ON

CORRECTCONDITION

• BUZZERSOUNDS

(LCD SHOWS

"BUZZER")

DEFECT CONDITION & CORRECTION

• NO BUZZER

SOUNDS AND

COULD NOT

ENTERTEST

MODE

oLCD MODULE

PROGRAM

• REPLACE A-

BOARD (SEE P.53)

PRESSFOLLOWING

KEYS SEQUENTIALLY

•START/STOP

BuYroN

• REVERSE BUYTON

•AUTO-LOCK

BUTTON

• UP/DOWN BUT-

TON

• PRESS"PRESSTHIS

KEY"ON LEFTSIDE

(LCD SHOWS "S/S,

REV, AL, U/D KEY")

• BUZZERSOUNDS

FOR NEXT STEP

PRESS

• BUZZERSOUN DS

AND INDICATES

"PRESSTHIS KEY"AT

RIGHT HAND SIDE

ON LCD

• BUZZERSOUNDS

FOR NEXT STEP

• PRESS*PRESSTHIS

KEY" ON RIGHT

SIDE

• SHIFTTHE BOBBIN

WINDER SPINDLE

TO THE RIGHT

THEN THE LEFT

*SHIFT SPEED

SETTING SLIDE

LEVER TO RIGHT,

THEN TURN BACK

TO LEFT

• DEPRESSTHE

FOOT CONTROL-

LER FULLYAND

(LCD SHOWS

"SPOOL')

*BUZZER SOUNDS

EVERYTIME WHEN

BOBBIN WINDER

SPINDLE ISSHIFTED

(LCD SHOWS

"SLIDING VOLUME")

*BUZZER SOUNDS

AT LEFT& RIGHT

POSITION

(LCD SHOWS

RELEASEtT

"CONTROLLER")

• BUZZERSOUNDS

WHEN FOOT

CONTROLLER IS

DEPRESSEDFULLY

AND RELEASED

VERSION. ALSO,

PROGRAM WILL

BE LOCKED

• NO BUZZER

SOUNDS AND

PROGRAM WILL

BE LOCKED

• NO BUZZER

SOUNDS AND

PROGRAM WILL

BE LOCKED

• NO BUZZER

SOUNDS

• NO BUZZER

SOUNDS

• NO BUZZER

SOUNDS

• FIRST,CHECK THE

F-BOARD (SEE

P.66) IF F-BOARD

ISOK, THEN

REPLACE THE A-

BOARD (SEE P.53)

• FIRST,REPLACE A-

BOARD (SEE P.53)

IF NO SOUND

OCCURS AFTER

REPLACING A-

BOARD, REPLACE

THE LCD UNIT (SEE

P.54)

• REPLACE A-

BOARD (SEE P.53)

• FIRST,CHECK

SLIDING VOLUME

(SEE P.56). IF

SLIDING VOLUME IS

OK, REPLACE A-

BOARD (SEEP.53)

• FIRST,CHECK

FOOT CONTROL

(SEE P.66). IF FOOT

CONTROL IS OK,

REPLACE A-

BOARD (SEE P.53)

12


STEP

TEST

CORRECTCONDmOB DEFECT CONDITION & CORRECTION

07) PRESSER F-OO"

(LCD SHOWS "FOOl

SENSOR TEST

LEVER')

• PRESSU/D NEEDLE

BUTTON FOR NEXT

STEP

08) BUITONHOLE

SENSOR TEST

09) UPPER SHAFT

POSITIONING

SENSOR TEST

• SHIFT THE BH

LEVER BACK &

FORTH GENTLY

(LCD SHOWS "BH

SENSOR STATE')

• WHEN LEVBR IS

PULLED TOWARD

YOU--BUZZER

SOUNDS & INDI-

CATES "CLOSED"

ON LCD BOARD

• WHEN LEVER IS

RELEASED--

BUZZERSOUNDS &

INDICATES "OPEN"

ON LCD BOARD

• TURN THE HAND

WHEEL TOWARD

YOU TO MOVE

THE NEEDLE BAR

TO HIGHEST POSI-

TION AND LOWEST

POSITION

(LCD SHOWS "BH

SENSOR")

• LCD SHOWS

"BIGHT" WHEN

NEEDLE IS AT

HIGHEST POSITION

• LCD SHOWS

"FEED"WHEN

NEEDLE ISAT

LOWEST POSITION

•NO BUZZER

SOUNDS

• LCD DOES NOT

SHOW "BIGHT"

OR "FEED". ALSO

LCD DOES NOT

CHANGE INDI-

CATION WHILE

TURNING

HANDWHEEL

• FIRST,CHECK F-

BOARD (SEEP.66)

IF F-BOARD ISOK,

REPLACE A-

BOARD (SEEP.53)

IF BOTH F-BOARD

& A-BOARD ARE

OK, REPLACE BH

SENSOR (SEE P.59]

• FIRST,REPLACE A-

BOARD (SEE P.53)

IF LCD ISSTILL

INCORRECT,

REPLACE UPPER

SHAFT SENSOR

(SEE P.60)

10) STEPPING

MOTOR TEST

11) MACHINE

MOTOR TEST

• RAISE THE NEEDLE

BAR TO HIGHEST

POSITION AND

PUSH START/STOP

BUTrON

• LOWER THE

NEEDLE BAR TO

LOWEST POSITION

AND PUSH START/

STOP BUTTON

• PRESSSTART/STOP

BU1-FON

(LCD SHOWS "STEP-

PING MOTOR')

• ZIGZAG STEPPING

MOTOR WILL

MOVE THE

NEEDLE, LEAVING

IT IN THE CENTER

POSITION

• THE FEED DOGS

WILL MOVE BACK

AND FORTH IN THE

LOWER POSITION,

THEN STOP

• X AND Y-AXIS

STEPPING MOTOR

WILL MOVE THE

CARRIAGE TO

HOME POSITION

• FEED DOG TO

HOME POSITION

(LCD SHOWS "DC

MOTOR")

• MACHINE RUNS

SLOW, AND FAST,

THEN NEEDLE BAR

STOPSAT THE

HIGHEST POSITION

• NOT WORKING

CORRECTLY

• NOT STOPPING

AT THE HIGHEST

POSITION OR

RUNNING AT

UNEVEN SPEED

• FIRST,CHECK

STEPPING MOTOR

(SEE P.69). IF

STEPPING MOTOR

ISOK, REPLACE

A-BOARD (SEE

P.53)

• FIRST,CHECK THE

DC MOTOR (SEE

P. 67). IF DC

MOTOR IS OK,

REPLACE A-

BOARD (SEE P.53)

WHEN ALL STEPSARE DONE. PRESS UP/DOWN BUTTON. CORRECT CONDITION :LCD SHOWS" 1,2,3,4, 5,6, 7.8,9. 10._.*""SUMMARY ....

OK OK OK OKOK OK O_ OK OK OK

DEFECT CONDITION : LCD SHOWS "NG" UNDER THESTEP NUMBEr_.

13

SEWING MACHINE DIV. 20

MAIN KEY FUNCTION

MODEL 385.19001890

/_

(5)

1c I. u

(6) (7)

(1)

(1) START/STOP BUTTON ................ CONVENTIONAL AND EMBROIDERY SEWrNG

..

WITHOUT FOOT CONTROL

(2) REVERSE BU_QN ..................... REVERSESTITCHING WHILE PREYING THISBUI_QN

(3) AUTO-LOOK BUNON .............. SEWS IN PLACE FOR A FEW STITCHESTHEN AUTO-

MATICALLY STOPS

(4)

(5)

(6)

UP/DOWN NEEDLE BUTrON .,. FOR CHANGING THE NEEDLE POSITION (UP OR

DOWN)

MEMORY KEY ..........................

FOR MEMORIZING LETFERSAND NUMBERS(EMBROI-

DERY ONLY)

CLEAR KEY ...............................

TO CLEAR THE MEMORIZED MONOGRAMS

(7)

(EMBROIDERY ONLY)

MENU KEY ................................

FOR CHOOSING BETWEENCONVENTIONAL SEWING

AND EMBROIDERY SEWING

(8) LEI-FERSIZE KEY ........................ FOR CHANGING THE SIZEOF LETTERS/NUMBERS

(EMBROIDERY ONLY)

UPPER/LOWER CASE KEY ....... FOR SELECTING UPPER OR LOWER CASE LETTERS (9)

(EMBROIDERY ONLY)

(10) SPACE CHECK KEY .................. TO MOVE THE CARRIAGE TO THE DESIRED POSITION

(EMBROIDERY ONLY)

(11) PREVIOUS PAGE KEY ............... TO CHANGE THE PATrERN SCREEN TO PREVIOUS

PAGE

(12) NEXT PAGE KEY ....................... TO CHANGE THE PATTERNSCREEN TO NEXT PAGE

(13) RETURN KEY ..............................

TO RETURNTO THE PREVIOUS DISPLAY

14

MODEL385.19001890

WINDING THEBOBBIN

(1) PASS THE THREAD AROUND THREAD GUIDE.

(2) THEN THROUGH THE HOLE IN THE BOBBIN.

(3) PUT THE BOBBIN ON THE BOBBIN WINDER SPINDLE, AND PUSH THE BOBBIN TO THE RIGHT.

(4) WHEN THE BOBBIN IS FULLYWOUND, ITWILL STOP AUTOMATICALLY. RETURNTHE BOBBIN

WINDER TO ITSORIGINAL POSITION BY MOVING THE SPINDLE TO THE LEFT,AND CUT THE

THREAD AS SHOWN.

(2)

/

I

• INSERTING THE BOBBIN

(1)

• (2)

(4)

PLACE THE BOBBIN IN THE BOBBIN HOLDER WITH THE

THREAD RUNNING OFF IN THE COUNTERCLOCKWISE

DIRECTION.

(1) END OF THREAD

GUIDE THE THREAD INTO THE NOTCH (A) ON THE FRONT

SIDE OF THE BOBBIN HOLDER.

DRAW THE THREAD TO THE LEFT,SLIDING IT BEIWEEN THE

TENSION SPRING BLADES,

(2) NOTCH (A)

CONTINUE TO DRAW THE THREAD LIGHTLY UNTIL THE

THREAD SLIPSINTO NOTCH (B).

PULL OUT ABOUT 15 CM (6") OF THREAD.

(3) NOTCH (B)

ATTACH THE HOOK COVER PLATE.

CHECK THE THREADING BY REFERRING TO THE CHART

SHOWN ON THE HOOK COVER PLATE,

(4) THREADING CHART

15


THREADING THE MACHINE

RAISE THE PRESSERFOOT LIFTER,AND PASSTHE THREAD THROUGH POINTS (I) TO (6).

(1) HOLD THE UPPER THREAD AND PASS THE THREAD UNDER THE THREAD GUIDE. PULL THE

THREAD DOWN ALONG THE GROOVE.

(2) DRAW THE THREAD AROUND THE CHECK SPRING HOLDER FROM RIGHT TO LEFT,THEN

PULL UP THE THREAD.

(3) FIRMLY DRAW THE THREAD FROM RIGHT TO LEFTAND PULL IT TOWARD YOU INTO THE

EYE OF THE THREAD TAKE-UP LEVER,THEN DOWN TO THE LOWER THREAD GUIDE.

(4) DRAW THE THREAD FROM RIGHT TO LEFTBEHIND THE LOWER THREAD GUIDE.

(5) SLIDE THE THREAD BEHIND THE NEEDLE BAR THREAD GUIDE FROM THE LEFT.

(6) THREAD THE NEEDLE FROM FRONT TO BACK USING THE NEEDLE THREADER.

(3) ; (1)

(6)

16

(5)

(4)

J

J


WHEN MESSAGESAPPEAR ON THESCREEN

STOPFOR SAFETYPURPOSES

OOOOOOO

INSERT CPRD €..=

0000000

MESSAGE FOR THREAD BROKEN TURN OFF THE

POWER SWITCH, AND RE-THREADING.

THE VISUAL TOUCH SCREEN SHOWS 'BOBBIN WIND-

ING" CONDITION.

AFTER THE BOBBIN IS WOUND, RETURN THE BOBBIN

WINDER TO ITSORIGINAL POSITION BY MOVING THE

SPINDLE TO THE LEFT.

RAISE THE NEEDLE BAR BY PRESSING THE UP/DOWN

NEEDLE BUTTON.

(THIS MESSAGE WILL APPEAR WHEN THE POWER

SWITCH IS TURNED ON WITH THE NEEDLE LOWERED.)

TURN OFF THE POWER SWITCH, AND INSERT THE

MEMORY CARD AGAIN.

PRESS THIS BUTTON "@"

TO RAISE NEEDLE BPR I

•" "•" •"

STOP OPERATING THE MACHINE UNTIL THISMESSAGE

(WHEN THE MACHINE IS OVER LOADED.)

SYSTEM ERROR

ZIGZAG STEPPING

MOTOR

FEED STEPPING

MOTOR

\

I

*°'**°°

1.

CHECK THE MECHANISM OF ZIGZAG, FEED AND

CARRIGE IF THERE IS ANY FOREIGN OBJECT OR

MECHANICAL PROBLEM WHICH OBSTRUCTS

MOVEMENT OF STEPPING MOTOR MECHANISM.

.

CHECK THE GEAR AREA OF THE 4 STEPPING MO-

3.

TORS FOR LINT,AS ILLUSTRATED.

CHECK ALL CONNECTORS OF THE STEPPING MO-

TORS ARE SECURLY CONNECTED.

4.

CHECK THE STEPPING MOTOR FUNCTION BY

"ELECTRONIC QUICK CHECK".

5.

CHECK STEPPING MOTORS BY A ELECTRICTESTER.

@

17

TEMPERATURE,

(1) STABILIZER

TO ATTACH THE STABILIZER

PLACE THE GLUE (SHINY) SIDE OF THE STABILIZERON

THE FABRIC AND IRON AS ILLUSTRATEDUSING MEDIUM

I

(2) FABRIC

TO SETTHEFABRIC IN THE EMBROIDERYHOOP

MARK THE DESIRED EMBROIDERING POSITION ON THE

FABRIC AS ILLUSTRATEDUSING TAILOR'S CHALK.

(3) FABRIC

(4) REFERENCELINES

PLACE THE TEMPLATEON THE FABRIC, MATCHING THE

REFERENCELINES LOCATED ON THETEMPLATE TO THE

REFERENCE LINES YOU PREVIOUSLY MARKED ON THE

FABRIC.

TAPE THE TEMPLATE TO THE FABRIC AS SHOWN TO

HOLD THETEMPLATEIN PLACE. (SCOTCH TAPE ISREC-

OMMENDED.)

(5) TAPE

(6) TEMPLATE

(6)

PLACE THE FABRIC WITH THE TEMPLATE ATTACHED TO

IT AND SETIT ON TOP OF OUTER HOOP.

SETTHE INNER HOOP ON TOP OF YOUR FABRIC.

(7) INNER HOOP

(8) RIGHT SIDE OF FABRIC

(9) STABILIZERON WRONG SIDE OF FABRIC

(10) OUTER HOOP

(_(8)

(10)_C

A

PUSH THE FLATSIDE "A" OF THE INNER HOOP INTO THE

FLATSIDE "B" OF THE OUTER HOOP.

WHILE SQUEEZING THE HANDLES "C" TOGETHER, PUSH

THE ROUND PART OF THE INNER HOOP INTO THE

ROUND PART OF THE OUTER HOOP SO THE MATERIAL

ISSECURE.

(5)

(9)

TAKE OUT THE TEMPLATEBY PU_ING YOUR FINGER IN

THE THUMB HOLE LOCATED ON THE TEMPLATE AND

LIFTUP.

(11) FOR EASY REMOVAL OF TEMPLATE (THUMBHOLE)

18

(11)

SDA/ING MACHINE DIV. 20 MODEL 385.19001890

SERVICEACCESS

FACE COVER

TO REMOVE:

1.

REMOVE THE 2 SCRE"WS(A) AND REMOVE THE FACE COVER (B).

TO ATTACH:

2.

REPLACE THE FACE COVER BY LIGHTLYTIGHTENING THE 2 SCREWS (A).

3.

CLOSE THE FACE COVER, CAREFULLY ALIGNING IT WITH THE BODY. THEN TIGHTEN THE

SCREWS FIRMLY.

TOP COVER

TO REMOVE:

1.

REMOVE THE CAP(C) AND SCREW (D).

LIFTTHE CARRYING HANDLE (E) UP. REMOVE

THE SCREW (F).

2.

LIFTTHECARRYING HANDLE UP. REMOVE THETOP COVER (G) IN THE DIRECTION SHOWN.

TO ATTACH:

3, REVERSETHIS PROCEDURE.

SC REW (F)

FACE COVER (B)

SCREW (A)

CARRYING HANDLE (E)

TOP COVER UNIT (G)

19

SEWING MACHINE DIV. 20 MODEL 385. ] 900 ] 890

SERVICEACCESS

BELTCOVER

TO REMOVE:

1.

LOOSEN SCREW (A), REMOVE SCREWS (B), (C) AND'WASHER (D). THEN REMOVE THE

BELTCOVER (E).

TO ATTACH:

2.

REVERSETHIS PROCEDURE.

HANDLE

_._SCREW (A)

BELTcovER (E)

FRONT PANEL

SCREW (B)

SCREW (C)

..

;"

WASHER(D)

2O


SERVICEACCESS

BASE COVER

TO REMOVE:

I.

MOVE THE CARRIAGE (A) BY HAND, WHEN MOVING IT,HOLD THE LOWER PART, NEVER

THE UPPER PART.

2.

3.

REMOVE THE 3 SCREWS (B) AND REMOVE THE CARRIAGE WINDOW FRAME (C).

REMOVE THE 2 SCREWS (D) AND REMOVE THE BASE COVER (E).

TO ATTACH:

4, REVERSETHIS PROCEDURE.

CARRIAGE (A)

SCREW (B)

SCREW (D)

BASE COVER (E

MOVING THE LOWER PART

WINDOW FRAME (C).

21

MODEL385.19001890

SERVICEACCESS

BED COVER

TO REMOVE:

1.

REMOVE THE WINDOW FRAME, AND THE BASE COVER.

2.

3.

REMOVE THE 2 SCREWS (A), AND REMOVE THE BASE LID (1).

REMOBE THE 2 SCREWS (B), AND REMOVE THE BED COVER (C).

TO ATTACH:

4, REVERSETHISPROCEDURE.

NOTE: MAKE SURE THE POSITION OF THE DROP LEVER (D) ISAS ILLUSTRATED.

BED COVER (C)

SCREW(B)

I II

J SCREW(A)

BASE LID (1)

DROP LEVER (D)

22

SERVICE ACCESS

BASE UNIT

TO REMOVE:

1.

REMOVE THE BELTCOVER.

2.

PULL THE CONNECTORS FOR THE X-AXIS (WHITE) AND Y-AXIS (BLUE) MOTORS FROM A-

BOARD.

3.

REMOVE THE 4 SCREWS (A) AND THE BASE UNIT (B).

TO ATTACH:

4.

FOLLOW THE ABOVE PROCEDURE tN REVERSE.

CONNECTOR FOR X AXIS MOTOR (WHITE)

CO, NNECTOR FOR Y AXIS MOTOR (BLUE)

/

SCREWS (A)

23

BASE UNIT (B)


SERVICEACCESS

FRONT COVER

TO REMOVE:

1.

REMOVE THE TOP COVER AND BELTCOVER UNIT.

2.

REMOVE THE SCREW(A) AND ARM THREAD GUIDE (LOWER) (F), LOOSEN THE SCREWS

(B), (C), (D) AND (E).

3.

UNPLUG 12 CONNECTORS FROM A-BOARD (G). AND LCD CONNECTOR (H) FROM

INVERTER.

4.

REMOVE THE FRONT COVER UNIT.

TO ATTACH:

1.

FOLLOW THE ABOVE PROCEDURE IN REVERSE.

ARM THREAD GUIDE

(LOWER) (F)

SCREW (A)

SCREW (B)

SCREW (C)

SCREW

SCREW (E)

24

MODEL385.19001890

MECHANICAL ADJUSTMENT

NEEDLE POSITION

*WHEN THE STRAIGHT STITCH IS SELECTED, THE NEEDLE SHOULD BE AT THE CENTER OF

HOLE OF THE NEEDLE PLATE.

*WHEN THE ZIGZAG STITCHIS SELECTED WITH THE ZIGZAG WIDTH SETTO THE MAXIMUM

(7.0), THE CLEARANCE BETWEEN THE SIDE OF THE NEEDLE AND THE EDGE OF HOLE OF

THE NEEDLE PLATE AT THE LEFTAND RIGHT NEEDLE POSITION SHOULD BE 0.2 MM OR

MORE.

MACHINE SETTING:

1.

PATTERN: NO.1 (STRAIGHT STITCH)

2.

NEEDLE BAR : LOWEST POSITION

PREPARATION:

1.

OPEN THE FACE COVER AND LOOSEN THE SETSCREW (A).

2.

MOVE THE ZIGZAG ROD (B) LEFTOR RIGHT TO SETTHE NEEDLE (C) AT THE CENTER OF THE

HOLE OF THE NEEDLE PLATE(D). THEN TIGHTEN THE SCREW (A),

TO CHECK:

1.

SELECT THE ZIGZAG STITCH(NO.5).

SETTHE ZIGZAG WIDTH TO THE MAXIMUM (7.0).

2.

TURN THE HANDWHEEL TOWARD YOU AND CHECK IF THE CLEARANCE BETWEEN THE

SIDE OF THE NEEDLE AND THE EDGE OF HOLE OF THE NEEDLE PLATE, AT THE LEFTAND

RIGHT NEEDLE POSITION, IS 0.2 MM OR MORE.

SETSCREW (A)

HOLE OF NEEDLE PLATE(D)

ZIGZAG ROD (B)

0.2 MM OR MORE_t_

I1 i I

_0.2

MM OR

MORE i _1

NEEDLE #14 (C)

A=B

25



NEEDLE BAR HEIGHT

MACHINE

SETTING:

I.

PAI-rERN: NO.I (STRAIGHT STITCH)

2.

TURN THE POWER SWITCH OFF.

PREPARATION:

1 REMOVE THE NEEDLE, PRESSERFOOT, NEEDLE PLATE(A) AND BOBBIN HOLDER (B).

2.

INSERTTHE RADIAL TIMING GAUGE #68497 (C) INTO THE HOOK.

3.

AI-rACH THE NEEDLE BAR HEIGHT GAUGE#68168 (D).

*PUSH IT UP UNITL IT STOPS.

4.

TIGHTEN SCREW (E).

TO CHECK:

1.

TURN THE POWER SWITCH ON.

2.

TURN THE HANDWHEEL TOWARD YOU UNTIL THE NEEDLE BAR (F) REACHES ITSLOWEST

POSITION.

*IF FINGER (G) COMES DOWN ON TOP OF PIN (H), OR IF PIN (I) TOUCHES THE SURFACE

OF GAUGE (K) TOO FORCEFULLY,ADJUST AS DESCRIBED ON THE NEXT PAGE.

3.

THE FACE OF FINGER (G) SHOULD HIT THE SIDE OF PIN (H) AND THE END OF PIN (I)

SHOULD TOUCH THE SURFACE OF GAUGE (K) WHEN THE NEEDLE BAR (F) REACHES ITS

LOWEST POSITION.

26



NEEDLEBAR HEIGHT

ADJUSTMENT PROCEDURE:

1.

OPENTHE FACE COVER.

2.

LOOSEN THE SCREW (M) ON THE NEEDLE BAR HOLDER (L).

3.

MOVE THE NEEDLE BAR (F) UP OR DOWN TO ADJUST THE POSITION OF THE NEEDLE BAR

(F) SO THATTHE FACE (G) HITSTHE SIDE OF PIN (H) AND THE END OF PIN (I) TOUCHES THE

SURFACE OF GAUGE (K).

4.

TIGHTEN THE SCREW (M) SECURELY.

NEEDLE BAR HOLDER J

/

NEEDLE BAR (F)

SCR

J ACREW (E)

(G)

(K)_

AGUGE #68497 (C)

27

SEWING MACHINE DtV. 20 MODEL 385.19001890

NEEDLETO SHUTrLETIMING


MACHINE

SETTING:

I.

PAI-rERN: NO.I (STRAIGHT STITCH)

2.


PREPARATION:

I.

REMOVE THE NEEDLE, PRESSER FOOT, NEEDLE PLATE (A) AND BOBBIN HOLDER (B).-

2.

INSERT THE RADIAL TIMING GAUGE #68497 (C) SO THAT THE SMALL FINGER ON THE

GAUGE FITSINTO THE SLOT NEAR THE TIPOF THE HOOK.

3.

PUT THE TESTPIN #68368 (D) IN THE NEEDLE HOLDER (E).

*PUSH ITUP UNTIL ITSTOPS.

4.

TIGHTEN THE NEEDLE CLAMP SCREW (F).

TO CHECK:

1, TURN THE POWER SWITCH ON.

2, TURN THE HANDWHEEL TOWARD YOU UNTIL THE TIP OF TESTPIN #68368 (D) SLIGHTLY

TOUCHES THE RADIAL TIMING GAUGE #68497 (C).

3.

THE TIP OF TESTPIN #68368 (D) SHOULD BE BETWEENTHE TWO WHITE LINES OF THE

RADIAL TIMING GAUGE _58497(C).

*IF THE TESTPIN DOES NOT FALL BETWEEN THE 2 WHITE LINES ON THE RADIAL TIMING

GAUGE, ADJUST AS FOLLOWS.

NEEDLE PLATE(A)

BOBBIN HOLDER (B)

TESTPIN #68368 (D)

GAUGE #68497 (C) i

_J

NEEDLE

CLAMP

SCREW (F)

NEEDLE

HOLDER (E)

28


NEEDLETO SHUITLETIMING

MECHANICAL ADJUSTMENT


I.

TURN THE POWER SWITCH OFF.

2.

REMOVE THE BELTCOVER (SEE P.20).

3.

REMOVE THE 4 SCREWS (G), THEN BASE LID 2 ( I ).

4.

TURN THE POWER SWITCH ON, AND SELECT PATTERNNO.1 (STRAIGHT STITCH).

5.

LOOSEN THE 2 SCREWS IN THE LOWER SHAFT TIMING GEAR (J).

6.

TURN THE HANDWHEEL TOWARD YOU UNTIL THE TESTPIN (D) SLIGHTLY TOUCHES THE

RADIAL TIMING GAUGE (C)..

7.

HOLD THE HANDWHEEL SO THATTHETESTPIN (D) WILL NOT MOVE, AND TURN THESHUT[LE

HOOK (K) BY YOUR FINGER UNTIL THE TESTPIN (D) COMES IN BETWEENTHE TWO WHITE

LINES OF GAUGE #68497 (C).

8.

TIGHTEN 2 SCREWS (H).

9.

ATTACH THE BASE LID (2), BASE COVER, BED COVER, AND BELTCOVER.

HEXAGON SCREW (H)

\

BASE LID 2(I)

SCREW

LOWER SHAFT _ i

NEEDLE

CLAMP

•

TESTPIN (D)

1

_ NEEDLE HOLDER (E)

; _/SHUTTLE

(C_ _ HOOK (K)

29



CLEARANCE BETWEENNEEDLEAND HOOK

*THE CLEARANCE BETWEEN THE NEEDLE AND THE POINT OF HOOK SHOULD BE -0.1 TO

+0.05 MM.

PREPARATION:

1.

REMOVE THE NEEDLE PLATE, BOBBIN HOLDER, BASE COVER, BASE LID AND BED COVER

UNIT (SEE P.22), AND REPLACE THE NEEDLE WITH THE TESTPIN (D) #68368.

2.

TURN THE POWER SWITCH ON, AND SELECT PATTERNNO. 5 (ZIGZAG STITCH).


1.

LOOSEN THE SCREWS (A),(B),(C), THEN SLIGHTLYTIGHTEN THE HINGE SCREW(C).

2.

TURN THE HANDWHEEL TOWARD YOU, AND ADJUST THE CLEARANCE BETWEENTHE MAS-

TER NEEDLE AND THE POINT OF THE HOOK IN THE LEFTAND RIGHT NEEDLE POSITION TO

-0.1 TO +0.05mm

BY MOVING THE HOOK SETPLATE(E) UP OR DOWN.

3.

TIGHTEN THE SCREWS(A),(B),(C).

4, CHECK THE BACKLASH OF THE HOOK DRIVE, GEAR AND LOWER SHAFT GEAR. IF THE

BACKLASH IS TOO GREAT OR NOT ENOUGH, ADJUST THE BACKLASH IN ACCORDANCE

WITH 'TO ADJUST THE BACKLASH OF HOOK DRIVE GEAR AND LOWER SHAFT GEAR"

(SEE P.31),

5.

ATTACH THE BED COVER UNIT, BASE COVER, BASE LID, NEEDLE PLATE AND BOBBIN

HOLDER, AND REMOVE THE TESTPIN (D).

SCREW (C)

TESTPIN (D)_ _

S

POINT OF HOOK

+0.05 to 43.I mm

HOOK SETPLATE (E)

3O



BACKLASH (LOWER SHAFT GEAR)

TO CHECK:

1.

TURN THE POWER SWITCH OFF.

2.

REMOVE THE NEEDLE PLATE AND BOBBIN HOLDER.

3.

TURN THE HANDWHEEL SLOWLY TOWARD YOU UNTIL THETIP OF THE SHUTI'LEHOOK (A) IS

BETWEEN BOTH ENDS (B) OF FEED DOG.

4, ROTATETHE HOOK RACE CLOCKWISE AND COUNTERCLOCKWISE BY FINGER. CHECK

THE PLAY. iTSHOULD BE WITHIN 0.8 MM.

"IFTHEREISMORE THAN 0.8 MM BACKLASH BEIWEEN THE GEARS, ADJUST AS FOLLOWS.


1.

REMOVE THE BED COVER (SEE P.22) AND LOOSEN THE SCREW (C).

2.

TURN THE LOWER SHAFT BUSHING (D) (ECCENTRIC), IN THE DIRECTION "E" WHEN THE

PLAY AT SHUTTLEHOOK TIP ISTOO SMALL.

3.

TURN THE LOWER SHAFT BUSHING (D) (ECCENTRIC), IN THE DIRECTION "F" WHEN THE

PLAY AT SHUTTLEHOOK TIP ISTOO LARGE,

4.

TIGHTEN SCREW (C) SECURELYAFTER ADJUSTMENT.

F

--_v_, LOWER SHAFT BUSHING (D) I

(B)

TIP OF SHUTI-LE

HOOK (A)

CHECK THE

PLAY

• LOWER SHAFT GEAR

F E

GROOVE OF LOWER SHAFT BUSHING (D)

31

MODEL385.19001890


FEED DOG HEIGHT

MACHINE

SE'I'rlNG:

I.

PATIERN:

2.

STITCH LENGTH:

3.

NEEDLE

BAR:

NO. 1 (STRAIGHT STICH)

5.0 (MAX)

HIGHEST POSITION

PREPARATION:

1.

REMOVE THE PRESSERFOOT.

2.

PUT THE FEED DOG HEIGHT GAUGD_3496 (C) ON THE NEEDLE PLATE.

TO CHECK:

I.

PLACE THE FEED DOG HEIGHT GAUGE #68496 (C) WITH FACE (A) UP. WHEN THE FEED

DOG ISRAISED,THE GAUGE SHOULD NOT MOVE,

2.

TURN THE GAUGE OVER SO FACE (B)ISUP.THE GAUGE SHOULD MOVE.

3.

IFTHE GAUGE DOES NOT MOVE, ADJUST,

FACE(A)

0.95 MM

NOT MOVING

NOT MOVING

MOVING

GAUGE

FACE(B)

0.75 MM

MOVING

NOT MOVING

MOVING

#68496 (C)

FEED DOG HEIGHT

CORRECT

LOW

HIGH

32



FEED DOG HEIGHT


1.

REMOVE THE BASE COVER, BASE LID AND BED COVER UNIT (SEE P.22).

2.

TURN THE POWER SWITCH ON.

3.

TURN THE BALANCE WHEEL TOWARD YOU AND SETTHE FEED DOG AT THE HIGHEST

POSITION.

4.

LOOSEN THE ADJUSTING SCREW (A) AND NUT (B).

5.

TO ADJUST THE FEED DOG HEIGHT, TURN THE ADJUSTING SCREW (C) IN THE DIRECTION

"D" OR "E".

6.

FIRST,TIGHTEN THE NUT (B) AND THEN TIGHTEN THE SCREW (A).

7.

ATrACH THE BED COVER UNIT, BASE COVER, AND BASE LID.

E (TO RAISE)

SCREW (A)

NUT (B)

(TO LOWER)

ADJUSTING SCREW (C)

33



UPPER SHAFT SHIELD PLATEPOSITION

TO CHECK:

1.

WHEN THE MACHINE IS SET FOR ZIGZAG STITCH, THE NEEDLE SHOULD STARTTO SWING

7.7 TO 8.7 MM ABOVE THE SURFACE OF THE NEEDLE PLATE.

ADJUSTMENT PROCEDURE:

1.

REMOVE THE TOP COVER UNIT (SEE P.19). TURN ON THE POWER SWITCH. SELECT ZIG-

ZAG STITCH NO. 5.

2.

TURN THE HANDWHEEL TOWARD YOU SLOWLY, WITH YOUR HAND, UNITIL THE NEEDLE

STARTSTO SWING,

3.

IF HIGHER THAN 8.7MM, LOOSEN THE SCREW (C) AND TURN THE UPPER SHAFT SHIELD

PLATE(D) IN DIRECTION "B".

4, IF LOWER THAN 7.7MM, LOOSEN THE SCREW (C) AND TURN THE UPPER SHAFT SHIELD

PLATE (D) IN DIRECTION "A".

5.

PUSH THE UPPER SHAFT SHIELD PLATE AS CLOSE AS POSSIBLE TO THE LEFT. (IT SHOULD

NOT TOUCH THE UPPER SHAFT SENSOR). THEN TIGHTEN THE SCREW.

6.

TURN THE BALANCE WHEEL TOWARD YOU. CHECK THE STARTING POINT OF THE NEEDLE

SWING. A1TACH THE TOP COVER UNIT.

SURFACE OF NEEDLE PLATE

UPPER SHAFT SHIELD PLATE (D)

(#14)

7.7 MM - 8,7 MM j SCREW (C)

/

UPPER SHAFT SENSOR

B

34

MODEL385."19001890


SOLENOID

PREPARATION:

1.

LOWER THE PRESSERBAR LIFTER.


I.

REMOVE THE TOP COVER (SEEP.19).

2.

LOOSEN THE 2 SCREWS (A).

3.

INSERTTHE GAUGE #U1790 AS SHOWN, AND TIGHTEN THE SCREWS (A).

4.

TO DO THE "SOLENOID TEST".

*WHILE PRESSING THE AUTO-LOCK BUTTON, TURN THE POWER SWITCH ON. "SOLENOrD

TEST MODE START"WILL APPEAR ON THE LCD. CHECK THAT THE DISC HOLDER (B).IT

AUTOMATICALLY MOVES LEFTAND RIGHT CONTINUOUSLY.

PASS THE THREAD BETWEEN THE TENSION DISC (C) AND DISC HOLDER (B),WHEN THE

SOLENOID (D) MOVES TO THE RIGHT (OPEN), MAKE SURE THE THREAD HAS NO TEN-

SION.

5.

AITACH THE TOP COVER.

LCD SCREEN

SCREWS (A)

SOLENOID TESTMODE START

GAUGE #U 1790

THREAD RELEASING ROD

HOLDER(_

THREAD TENSION DISC (C)

_SCREWS

SOLENOID (D)

INSERTTHE GAUGE #U1790 (1.6 MM)

35

• J



TENSION RELEASEMECHANISM

TO CHECK:

I.

WHEN THE PRESSER BAR ISRAISED,THE TENSION DISC HOLDER (D) SHOULD MOVE ABOUT

1.0 MM AS A STANDARD VALUE IN ORDER FOR THE TENSION RELEASE FUNCTION TO

WORK CORRECTLY.


I.

REMOVE THE TOP COVER UNIT (SEEP.19)AND BELTCOVER UNIT (SEE P.20).

2.

LOOSEN THE SCREWS WHICH HOLD THE FRONT COVER UNIT(E)(SEE P.24).MOVE

THE

FRONT COVER UNIT(E)A LITTLE.

3.

LOWER THE PRESSER BAR LIFTERAND SET THE THREAD TENSION DIAL AT "9".LOOSEN

THE

SCREW (A).

4.

SETTHE CLEARANCE BETWEEN THE THREAD TENSION RELEASING ROD (13)

HOLDER(C) BETWEEN 0.3_).5MM AND TIGHTEN SCREW(A).

5.

SET THE THREAD TENSION DIAL AT "9"AND RAISE THE PRESSER BAR.

MAKE SURE THE

TENSION DISC MOVES ABOUT 1.0MM.

DO THE SAME TESTWITH THE THREAD TENSION DIAL SET AT "0".

6.

ATTACH THE TOP COVER, BELTCOVER AND FRONT COVER.

FRONT COVER UNIT (E)

TENSION RELEASING ROD (B)

SCREW (A)

3..

rt

TENSION RELEASING ROD (B)

(CLEARANCE: 0.3 - 0.5 MM)

ING HOLDER (C)

TENSION DISC HOLDER (D)

1.0 MM

36



STRETCHSTITCH FEED BALANCE

TO CHECK:

1.

WHEN A STRETCH PATTERN IS SEWN WITH THE FEED BALANCING DIAL (C) SETAT THE

STANDARD SETTING MARK " [_>", THE PATTERNSHOULD BE AS INDICATED WITH THE "0"

MARK IN THE FOLLOWING FIGURE. IF NOT (IF THERE IS NO BALANCE BETWEEN FOR-

WARD FEEDING AND BACKWARD FEEDING), THEN MAKE AN ADJUSTMENT AS FOLLOWS:

ADUSTMENT PROCEDURE:

1.

TURN THE POWER SWITCH ON, AND SELECT PATTERNNO,13 (TRIPLESTRETCHSTITCH).

2.

SETTHE SLITOF THE FEED BALANCING DIAL (C) AT THE STANDARD SETTING MARK • [_"

ON THE BELTCOVER.

3.

PUTTHE PAPER BETWEENTHE FOOT AND FEEDDOG AND LOWER THE PRESSERBAR LIFTER.

4.

TURN THE HANDWHEEL, AND CHECK THE NEEDLE POSITION OF "A" AND "B".

5.

REMOVE THE BASE LID(D).

6, WHEN A>B, TURN THE ADJUSTING SCREW (E) IN THE DIRECTION OF "A".

WHEN A<B, TURN THE ADJUSTING SCREW (E) IN THE DIRECTION OF "B".

7.

ATTACH THE BASE LID (D),

BASE LID (D)

A B

AcDJUSTIN(

REW (E)

/

(2) STANDARD

SETTING MARK FEED BALANCING DIAL (C)

INDICATION LINE

©

A=B

×

A>8

×

A<B

37



HEIGHT OF EMBROIDERY PRESSERFOOT "P"

TO CHECK:

1.

SETTHE NEEDLE BAR AT THE LOWEST POINT. LOWER THE PRESSERBAR WITH THE EMBROI-

DERY FOOT "P" ATTACHED. THE DISTANCE B_EEN THE BO1TOM PART OF FOOT "P" AND

THE SURFACE OF THE NEEDLE PLATESHOULD BETHE SAME AS THICKNESSOF THE GAUGE

#U1790.


1.

REMOVE THE TOP COVER (SEE P.19).

2, SETTHE NEEDLE BAR TO THE LOWEST POSITION. LOWER THE PRESSERFOOT LIFTER.THEN

SETTHE PRESSUREDIAL AT "2".

3.

INSERTTHE GAUGE #U 1790 BETWEENTHE PRESSERFOOT "P"AND THE NEEDLE PLATE (A).

4.

LOOSEN THE SCREW (B) AND PRESSTHE ACTUATOR ARM (C) TO THE CAM SURFACE.

THEN TIGHTEN THE SCREW (B) WHILE PUSHING IT DOWN.

5.

A1-FACH THE TOP COVER UNIT.

ACTUATOR ARM (C) PRESSTO THE CAM SURFACE

CAM

PUSH D(_

NEEDLE PLATE (A)

SCREW (B)

EMBROIDERY PRESSERFOOT "P"

GAUGE #U 1790(1.6 M M)

38

NEEDLE (LOWEST POSITION)



NEEDLETHREAD TENSION

TO CHECK:

1.

WHEN THE POLYESTERSEWING THREAD _ (WHITE) IS PASSED THROUGH AND PULLED

UP AS IN FIG.l, THE THREAD TENSION SHOULD BE 75_"l° GRAMS (THE THREAD PULLING

SPEED: APPROX. 110 MM/SEC.) WITH THE THREAD TENSION DIAL SETAT "4".


I.

REMOVE THE FRONT COVER UNIT (SEEP.24).

2.

PULL THE ADJUSTING PLATE SPRING (C) AWAY FROM THE LEAD SCREW (D) AND ADJUST

BY TURNING THE LEAD SCREW (D).

- WHEN THE TENSION ISSTRONG, TURN THE LEAD SCREW IN DIRECTION "A".

- WHEN THE TENSION ISWEAK, TURN THE LEAD SCREW IN THE DIRECTION "B".

3.

ATTACH THE FRONT COVER UNIT.

ADJUSTING PLATESPRING (C)

ADJUSTING PLATE SPRING (C)

ZL

/-

THREAD

TENSION DIAL AT "4"

P

LEAD SCREW (D)

NEEDLE THREAD

OLYESTERSEWING THREAD #50 (WHITE)

FIG. 1

39

SEWtNG MACHINE DIV. 20 MODEL 385.19001890

MECHANICAL

ADJUSTMENT

BUTTONHOLE LEVER

*IF THE STEPSDO NOT CHANGE OR THE ENDS OF STITCHESARE NOT IN LINE WHILE BUT-

TONHOLE SEWING, ADJUST AS FOLLOWS:

1.

ENTER ADJUSTING MODE. TURN THE POWER SWITCH ON WHILE PRESSING THE START/

STOP KEY AND THE REVERSEKEY. PRESSTHE LOCK STITCH KEY AND NEEDLE UP/DOWN

KEY WITHIN 2.5 SECONDS. THE LCD SCREEN SHOWS "BH SENSOR STATECLOSED".

2, LOOSEN THE SCREW (A) AND MOVE THE BH LEVERGUIDE (B). THE LCD SCREEN SHOULD

SHOW 'OPEN" WHEN THE BH LEVER IS LOWERED. THEN TIGHTEN THE SCREW (A).

3, ATrACH THE BH FOOT "R" AND LOWER THE BH LEVER (C).

4.

PUT GAUGE #U 1790 IN BEIWEEN THE SLIDING PART OF THE AUTOMATIC BUTPONHOLE

FOOT AND ITSEND, AS SHOWN.

5.

LOOSEN SETSCREW (B), MOVE THE SENSOR PLATE(E) FROM RIGHT TO LEFT,TIGHTEN THE

SETSCREW (D), AS THE LCD SCREEN CHANGES FROM (2) "OPEN" TO (3) "CLOSED'.

6.

TURN ON THE SWITCH AGAIN. SELECT BH #15 AND MAKE SURE IT SEWS CORRECTLY.

NOTE: THE LCD SCREEN SHOWS (1) CLOSED (2) OPEN (3) CLOSED WHEN THE SENSOR

PLATEIS MOVED FROM RIGHT TO LEFTON STEP5. ADJUSTMENT SHOULD BE SET

FROM (2) OPEN TO (3) CLOSED POSITION.

LCD SCREEN

BH LEVER (C)

t

I BH SENSOR

1

1

I CLOSED

(1)

LCD SCREEN

I+--[ OPEN] CLOSED

(2) (3)

LEFT RIGHT

(E)

(D)

BH LEVER GUIDE (B)

BH SENSOR

SCREW (A)

GAUGE #U 1790

(1.6 MM)

4O

BH FOOT "R"



PRESSERBAR HEIGHT AND ALIGNMENT

TO CHECK:

I.

RAISE THE PRESSER FOOT LEVER.

2.

THE DISTANCE BETWEEN THE ZIGZAG FOOT (A) AND THE NEEDLE PLATE (B)SHOULD BE

6.0 MM (0.24').

*IF THE HEIGHT ISGREATER OR LESSTHAN 6 MM (0.24"), ADJUST AS FOLLOWS.


I.

OPEN THE FACE COVER (C).

2.

RAISE THE PRESSER FOOT LEVER AND LOOSEN THE SCREW (D).

3, ADJUST THE DISTANCE BETWEEN THE ZIGZAG FOOT (A) AND THE NEEDLE PLATE (B)TO

6.0 MM (0.24").

4.

TIGHTEN SCREW (D) SECURELY.

NOTE: WHEN YOU TIGHTEN SCREW (D), MAKE SURETHAT BOTH SIDES OF THE ZIGZAG

FOOT (A) ARE PARALLEL WITH THE FEED DOG SLITS(E).

FACE COVER (C)

SCREW (D)

FEED DOG SLITS(E)

SHOULD BE

PRESSERFOOT (A)

NEEDLE PLATE(B)

FEED DOG

6MM

41

MODEL385.19001890


OVER LOAD (i)

* "STOP FOR SAFETY PURPOSES"APPEARS ON THE SCREEN WHEN THE MACHINE ISOVER-

LOADED

TO CHECK:

1, CHECK THE THREAD TAKE-UP LEVER AREA. IF THREAD ISJAMMED, REMOVE THE THREAD

(SEE P.63). ALSO, CHECK "MOTOR BELTTENSION" (SEE P.57) AND "BACKLASH OF THE

SHUTi'LEHOOK" (SEE P.31),

2.

TURN THE HANDWHEEL TOWARD YOU TO CHECK THE TORQUE. IF IT IS HEAVY, ADJUST

THE FOLLOWING:

PREPARATION:

1.

REMOVE THE TOP COVER (SEE P.19), BELTCOVER (SEE P.20), BASE AND BED COVER

(SEE P.22).

2.

TURN THE HANDWHEEL TOWARD YOU UNTIL THE NEEDLE BAR COMES TO ITS HIGHEST

POSITION.

MARK BOTH THE TIMING BELT(A) AND LOWER SHAFT GEAR (B) WITH A FELT-TIPPEN, AS

ILLUSTRATED.

3.

REMOVE THE MOTOR BELTAND THE TIMING BELT(A),


UPPERSHAFT

I.

LOOSEN THE SCREW (C).

2.

SLIDE THE UPPER SHAFT RING (D) TO THE LEFT SO THERE IS NO PLAY AND THE SHAFT

TURNSSMOOTHLY.

3.

TIGHTENTHE SCREW (C) AND MAKE SURE THEUPPER SHAFT (E) HAS NO PLAY AND TURNS

SMOOTHLY BY TURNING THE HANDWHEEL.

SCREW (C)

UPPER SHAFT (E)

RING (D)

THREAD TAKE-UP LEVER

MOTOR BELT

TIMING BELT(A)

LOWER SHAFT

GEAR (B)

MARKING

42


MECHANICAL

ADJUSTMENT

OVER LOAD (2)


LOWER SHAFT

I.

LOOSEN THE 2 SCREWS (A).

2.

SLIDE THE LOWER SHAFT RING (B) TO THE LEFTSO THERE IS NO PLAY AND THE SHAFT

TURNS SMOOTHLY.

3.

TIGHTEN THE 2 SCREWS (A).

MAKE SURE THE LOWER SHAFT (C) HAS NO PLAY AND

TURNS SMOOTHLY BY TURNING THE LOWER SHAFTTIMING GEAR (D).

HOW TO INSTALLTHE TIMING BELT:

1, TURN THE HANDWHEEL TOWARD YOU UNTIL THE NEEDLE BAR COMES TO ITS HIGHEST

POSITION.

TURN THE LOWER SHAFTTIMING GEAR (D) TOWARD YOU UNTILTHE FEED DOG (E) COMES

JUST ABOVE THE NEEDLE PLATE (F) IN ITS UPWARD MOTION.

THEN, ATTACH THE TIMING BELT(G).

* MAKE SURETHE MARKING ON THE TIMING BELT(G) IS IN LINE WITH THAT OF THE LOWER

SHAFT TIMING GEAR (D).

2.

CHECK THE "NEEDLE TO SHU_LE TIMING" (SEE P.28, 29)

3, AYrACH THE MOTOR BELT(H), BED COVER, BASE, BELTCOVER AND TOP COVER.

Z

LOWER SHAFTTIMING GEAR (D)

LOWER SHAFT RING (B)

FEED DOG (E)

NEEDLE _

PLATE(F) _

"_

SCREW (A)

TIMING BELT(G)

LOWER SHAFT (C)

MARKING

43

MOTOR BELT(H)


ADJUSTMENTOF TOUCH PANEL

TO CHECK:

1, IF, WHEN PRESSING THE TOUCH PANEL, A DIFFERENT STITCH IS SELECTED. ADJUST AS

FOLLOWS.


1.

TURN THE POWER SWITCH ON WHILE PRESSING THE UP/DOWN BUTTON, REVERSE BUT-

TON, AND START/STOP BUTTON SIMULTANEOUSLY. ("PRESS+ MARK" AND "+" MARK ARE

INDICATED ON THE LCD AT THIS TIME.)

2.

PRESSTHE CENTER OF THE "+" MARK WITH THE POINT OF THE ADDITIONAL SPOOL PIN.

(WHEN PRESSING THE "+" MARK ONCE, THE BUZZERSOUNDS. THE "+" MARK MOVES AS

SHOWN IN THE FIGURE BELOW EVERY TIME IT IS PUSHED.)

3.

WHEN THE FIFTH"+" MARK IS PRESSED,"ADJUSTMENT END" ISINDICATED ON THE LCD,

4.


5.

TURN THE POWER SWITCH ON, AND CHECK IF THE ORIGINAL FIRSTPAGE APPEARS ON

THE LCD.

NOTE: AFTERADJUSTMENT, CHECK TO SEE IF PAl-FERNSARE SELECTEDCORRECTLY,

_ _DITIONAL

FIRST INDICATION ON LCD

WHEN SWITCH ISTURNED ON

Press .-._..-.

i

BUIrON

START/STOP BUT[ON

""_x J f.._,

\

1

SPOOL PIN

+

÷

$

Press _ KEY i

MIoI"E"u/

3 (PRESSCENTER)

Adjustment END

LAST INDICATION ON LCD

/

4

44


BOBBIN THREAD TENSION (I)


*STANDARD BOBBIN THREAD TENSION IS 13 __ GRAMS.

1.

INSERTA BOBBIN WOUND WITH "KING" MARK POLYESTERTHREAD (#50 WHITE) INTO THE

BOBBIN HOLDER.

THREAD THE BOBBIN HOLDER AND AT[ACH THE END OF THE BOBBIN THREAD TO THE

POINT OF THE TENSION METER.

2.

PULL IT IN THE DIRECTION OF THE ARROW AT A SPEED OF 50 MM/SECOND.

- IF THE TENSION IS TOO STRONG, TURN THE SCREW COUNTERCLOCKWISE,

- IF THE TENSION IS TOO WEAK, TURN THE SCREW CLOCKWISE.

THREAD PULLING DERECTION

1-2MM

1

THREAD PULLING SPEED...50 MM/SECOND

45

SCREW

BOBBIN THREAD TENSION (2)

IF A TENSION METER IS NOT AVAILABLE, THE BOBBIN THREAD TENSION CAN BE ADJUSTEDAS

FOLLOWS:

1.

INSERTA BOBBIN WOUND WITH KENMORE EMBROIDERY THRAD (#204 YELLOW)(B) INTO

THE BOBBIN HOLDER. THREAD THE BOBBIN HOLDER AND HANG ZIGZAG FOOT "A" AND

OVEREDGE FOOT "C" ON THE END OF THE BOBBIN THREAD AS ILLUSTRATED.

2, TURN THEADJUSTING SCREW (D) SO THATTHETHREAD WILL DRAW OUT SMOOTHLY WHEN

YOU SWING THE BOBBIN HOLDER (E) UP AND DOWN GENTLY.

NOTE: THE BOBBIN THREAD TENSION MECHANISM ISVERY SENSITIVE,SO DO NOT AD-

JUSTITUNLESSYOU CAN NOT OBTAIN THE CORRECT TENSION BALANCE BY OTHER

MEANS. REPLACE THE BOBBIN HOLDER IF THE CORRECT TENSION CAN NOT BE

OBTAINED BY THIS PROCEDURE.

ADJUSI_ING SCREW (D)

BOBBIN HOLDER (E)

KENMORE EMBROIDERY

THREAD (YELLOW) (B)

ZIGZAG FOOT "A"

46

.__/OVEREDGE FOOT "C"


PARTREMOVAL AND REPLACEMENT

NEEDLETHREAD TENSION UNIT

TO REMOVE:

1.

REMOVE THE FRONT COVER UNIT (SEE P.24).

2.

REMOVE SCREWS (A) AND (B) AND THE NEEDLE THREAD TENSION UNIT (C).

TO ATTACH:

1.


NOTE: AFTER CHANGING THE NEEDLE THREAD TENSION UNIT, CHECK THE MECHANI-

CAL ADJUSTMENT, "TENSION RELEASEMECHANISM" (SEE P.36), "SOLENOID" (SEE

P.35) AND "NEEDLE THREAD TENSION" (SEE P.39).

SCREW (A)

L

THREAD TENSION UNIT (C)

47

SCREW (B)


PARTREMOVAL AND REPLACEMENT

FEED DOG

TO REMOVE:

1.

REMOVE THE NEEDLE PLATE (A) BY REMOVING SCREW(B).

2.

REMOVE THE FEED DOG (C) BY REMOVING THE 2 SCREWS (D).

TO ATrACH:

I.

SET THE FEED DOG BY LIGHTLY TIGHTENING THE 2 SCREWS (D).

2.

SET THE NEEDLE PLATE (A) WITH SCREW (B),CHECK THE LATERAL CLEARANCE BETWEEN

THE SLOTS FOR THE FEED DOG (C) IN THE NEEDLE PLATE.

3, TURN THE POWER SWITCH ON, SELECT PAITERN NO.I (STRAIGHT STITCH),AND SET THE

STITCH LENGTH AT THE MAXIMUM 5.0. CHECK THE FRONT TO BACK CLEARANCE BE-

TWEEN THE FEED DOG AND THE SLOTS IN THE NEEDLE PLATE, WHILE TURNING THE

HANDWHEEL TOWARD YOU.

4.

TURN THE POWER SWITCH OFF. REMOVE THE NEEDLE PLATE.RE-AITACH THE FEED DOG

BY TIGHTENING THE 2 SCREWS (D).

5.

AYrACH THE NEEDLE PLATE WITH SCREW (B).

FEED DOG (C) 2 SCREWS (D)

NEEDLE PLATE(A)

I

I

I

SCREW (B)

FEED DOG (C)

J

- FRONT BACK CLEARANCE

- LATERAL CLEARANCE

48

SEWING MACHIN E DIV. 20 MODEL 385.19001890


THREADER PLATE

*WHEN THE HOOK (A) OF THE THREADER PLATE(8) IS DAMAGED, CHANGE OR ADJUST

THE PART AS FOLLOWS:

TO CHANGE THE THREADERPLATE:

1.

RAISE THE NEEDLE TO ITSHIGHEST POSITION AND LOWER THE THREADER KNOB (C) TO ITS

LOWEST POSITION.

2, LOOSEN THE SCREW (D) AND REMOVE THE THREADER PLATE(B) (FIG.l).

TO CHANGE THE NEEDLETHREADER:

1.

IF THE HOOK OF THE THREADER PLATE TOUCHES THE LEFTOR RIGHT SIDE, LOOSEN THE

SCREW AND ADJUST THE HOOK POSITION (FIG.2).

2.

IFTHE HOOK OF THETHREADER PLATETOUCHES THE TOP OR BOTTOM SIDE OF THE NEEDLE

HOLE, LOOSEN THE SCREW AND ADJUST THE HOOK POSITION (FIG.3).

TO CHANGE THE THREADER PLATE

(FIG. l).

THREADER

KNOB (C)

ADJUST THE DIRECTION OF LEFTOR RIGHT

(FIG.3)

THREADER PLATE(B)

SCREW (D)

HOOK(_

ADJUST THE DIRECTION OF LEFTOR RIGHT

(FIG.2)

POSITION SETTING

PLATE

49

THREADER PLATE

SI=nA/IN DIV. 20 MODEL 385.19001890


C-BOARD UNIT

TO REMOVE:

I.

REMOVE THE BASE UNIT (A) AND SLIDE THE BASE (SEE P.23).

2.

LOOSEN THE 3 SCREWS (B).

3.

UNPLUG THE 4 CONNECTORS (C).

TO ATTACH:

1.

REVERSETHISPROCEDURE.

TO CHANGE THE FUSE

1.

AFTER REMOVING THE C-BOARD CASE UNIT (D), REMOVE 2 SCRE'WS(E) TO PULL OUT

THE C-BOARD (F).

2.

REPLACE THE FUSE IN THE FUSEHOLDER (G) ON C-BOARD.

• IF FUSE F1 (125V-2.5A) IS BLOWN ........... TRANSFORMER OR C-BOARD IS DAMAGED.

• IF FUSE F2 (250V-3.15A) IS BLOWN ......... TOO MUCH POWER IS ON THE DC MOTOR

WHEN THE UPPER SHAFT, LOWER SHAFT OR

SHUI-rLE RACE HAS HEAVY TORQUE.

BASE UNIT (A)

CONNECTER FOR

C-BOARD (C)

CONNECTER FOR

TRANSFORMER

(RED) (C)

SCREW (E)

C-BOARD (F)

SCREW (B)

(B)

C-BOARD CASE UNIT (D)

CONNECTORFOR TRANSFORMER (WHITE) (C)

SCREW (E)

(WHITE) FOR RECEPTACLE (C)

CASE UNIT (D)

r_

F2 (250V-3.15A) _/._

(#000182177)

FUSEF1 (125V-2.5A) \_:,,,,

_000117908) \

FUSEHOLDER (G)

CAP

50



TRANSFORMER

TO REMOVE:

1.

REMOVE THE FRONT COVER UNIT (SEE P.24).

2.

REMOVE THE 2 CONNECTORS (RED, WHITE) OF THE TRANSFORMER (A) FROM C-BOARD

CASE UNIT.

3.

REMOVE THE 2 SCREWS (B) AND PULL OUT THE TRANSFORMER (A), THEN CHANGE THE

TRANSFORMER.

TO ATTACH:

I.

REVERSE THISPROCEDURE.

CONNECTOR (RED)

\

C-BOARD CASE

CONNECTOR (WHITE)

\

\

\

\

\

\

-,_1/2 SCREWS (B)

[A)

51



MACHINE SOCKET UNIT

TO REMOVE:

1.

REMOVE THE BELTCOVER (SEE P.20) AND FRONT COVER UNIT (SEE P.24).

2.

PULL OUT THE CONNECTORS FROM C-BOARD CASE UNIT (A).

3.

REMOVE THE 2 SCREWS (B) AND CHANGE THE MACHINE SOCKET UNIT (C).

TO AI'TACH:

1.


*CORDS RUN AS ILLUSTRATED.

MACHINE SOCKET CONNECTOR

(SECONDARY)

MACHINE SOCKET CONNECTOR

(PRIMARY)

\

CORD (SECONDARY)

SCREW (B)

MACHINE SOCKET UNIT (C)

CORD (PRIMARY)

C-BOARD CASE UNIT (A)

52


PART REMOVAL AND REPLACEMENT

A-BOARD UNIT

TO REMOVE:

1.

REMOV!e THE FRONT COVER UNIT (SEE P.24).

2.

PULL OUT THE LCD FLATCABLE (A) BY LIFTING THE CONNECTOR CLAMP, PULL OUT THE

TOUCH PANEL CONNECTOR (B), SLIDE VOLUME (H) AND F-BOARD (C) CONNECTOR

FROM A-BOARD.

3.

REMOVE 7 SCREWS TO DISCONNECT A-BOARD AND CARD GUIDE (D).

4.

REMOVE THE HOOK (F) AND CARD GUIDE (D) (SEE THE DRAWING).

TO ATTACH:

1.

ATrACH CARD GUIDE (D) TO A-BOARD BY FITTINGTHE PROJECTION OF THE CARD GUIDE

(D) INTO THE ROUND HOLE OF THE CARD CONNECTOR (G).

PRESSTHE UNIT UNTIL IT IS

HOOKED.

2.

ATTACH A-BORD WITH 7 SCREWS. INSERT THE FLAT CABLE (A) TO THE CONNECTOR,

THEN PUSH DOWN THE CLAMP. (MAKE SURE THE EJECT BUIION (H) COMES OUT FROM

THE HOLE IN THE FRONT COVER.)

3, CONNECT F-BOARD AND TOUCH PANEL.

4, ATTACH THE FRONT COVER UNIT.

NOTE: ,,CHECK THE ADJUSTMENT OF THE TOUCH PANEL WHEN A-BOARD (E) IS

CHANGED.

*DO NOT TOUCH THE CONNECTING PART OF THE FLATCABLE (A) WITH YOUR

FINGER,

IA FLAT CABLE (A) SCREW --_ _ TOUCH PANEL CONNECTOR (B)

i

SCREW

-8OARD E)

_

-::

/ GUIDE (b)_ J_" _'7_,_ ".

"=_,[ /_ SCREW BOSS

/

|

__" kL_<

i

BUrtON

.-"

7

SCREW

:: ,- i

" " _oJ

/

|

J

53

MODEL385.19001890


LCD UNIT

TO REMOVE:

I.

REMOVE THE FRONT COVER (SEE P.24) AND A-BOARD (SEE P.53).

2.

REMOVE 2 SCREWS (A). LOOSEN 2 SCREWS (B) AND REMOVE THE LCD FRAME UNIT (D).

3.

REMOVE 2 SCREWS (C). THEN REMOVE THE SETTING PLATE (E).

TO ATTACH:

I.


NOTE: DO THE ADJUSTMENT OF "TOUCH PANEL* WHEN LCD FRAME UNIT (D) IS RE-

PLACED.

SCREWS (B)

SETTING PLATE (E)

SCREWS (A)

SCREWS (C)

54

UNIT (D)

MODEL385.19001890


F-BOARD UNIT

TO REMOVE:

I.

REMOVE THE FRONT COVER UNIT (SEEP.24).

2.

PULL OUT THE F-BOARD CONNECTOR (A) FROM A-BOARD (B).

3.

REMOVE THE 2 SCREWS (C),AND CHANGE F-BOARD.

TO ATTACH:

4.


F-BOARD CONNECTOR (A)

l

SCREWS (C)

F-BOARD (D)

A-BOARD (B)

55



SLIDE VOLUME UNIT

TO REMOVE:

1.

REMOVE THE FRONT COVER (SEE P.24) AND A-BOARD (SEE P.53).

2.

REMOVE THE SNAP RINGS CS-3 (A), AND CHANGE SLIDE VOLUME.

TO ATTACH:

3.


* INSERTTHE SLIDE TAB INTI THE LOWER HOLE OF THE SLIDE KNOB.

BOTTOM OF SLIDE KNOB

SLIDE VOLUME

\

SNAP RING (A)

AS VIEWED FROM THE UNDERSIDE OF KNOB

56


DC MOTOR UNIT AND BELTTENSION

TO REMOVE:

1.

REMOVE THE BELTCOVER (SEE P.20).

2.

PULL OUT THE PLUG CONNECTOR FROM A-BOARD AND REMOVE THE 2 SCREWS (A).

THEN REMOVE THE DC MOTOR UNIT (B).

TO ATTACH:

1.

PASSTHE MOTOR CORD UNDER THE ARM RIB, THEN ATrACH THE MOTOR WITH 2 SCREWS

(A) TEMPORARILY AS SHOWN BELOW.

2.

TIGHTEN MOTOR FIXING SCREWS (A) FIRMLY WHEN THE MOTOR BELTTENSION IS COR-

RECT AS SHOWN BELOW.

3.

INSERTTHE CONNECTOR TO THE A-BOARD.

4.

ATTACH THE BELTCOVER. THE MOTOR CORD SHOULD BE SETON THE LEFTSIDE OF THE

BELTCOVER BOSS (B).

"_ PRESSURE200 g

BENDING AMOUNT

ABOUT 5 MM

V1OTOR CONNECTOR

(WHITE COLOR)

\

DC MOTOR (B)

\

BELTCOVER BOSS (B)

PASSTHE CONNECTOR UNDER THE ARM RIB

MOTOR FIXING SCREWS (A) "

",

"'_\

MOTOR BELT

57

SEWING MACHINE DIM 20 MODEL 385.19001890

PARTREMOVAL AND REPLACEMENT

CARRIAGE PLATECOVER UNIT

TO REMOVE:

1.

REMOVE THE CARRIAGE COVER CAP (A). (PULL THE CARRIAGE AWAY FROM THE MA-

CHINE A LIT[LE AND PRY OFF THE COVER CAP WITH A SCREWDRIVER, AS SHOWN BE-

LOW.)

2.

LOOSEN THE 3 SCREWS (B), AND REMOVE THE CARRIAGE PLATE COVER (C),

TO ATTACH:

1.

DROP THE FEED DOG. (MOVE THE DROP FEED KNOB (D) IN THE DIRECTION OF THE

ARROW.)

2.

LIGHTLY TIGHTEN THE CARRIAGE PLATE COVER (C) WITH THREESCREWS (B).

3.

AI-I'ACH THE EMBROIDERY HOOP. ADJUST THE CARRIAGE PLATECOVER UNIT (C).

*ADJUST THE CLEARANCE BETWEENTHE BoYroM SIDE OF THE EMBROIDERY HOOP AND

THE SURFACE OF THE NEEDLE PLATE (F) AT 0.5 MM AND PARALLEL. (PUT TWO POST-

CARDS (G) BETWEEN EMBROIDERY HOOP AND NEEDLE PLATEWHEN ADJUSTING AND

HOLD THE EMBROIDERY HOOP.)

*PUT GAUGE _J1790 BETWEENTHE MACHINE BODY AND CARRIAGE PLATE COVER (C).

4.

TIGHTEN THE 3 SCREWS (B), THEN SETTHE CARRRIAGE COVER CAP (A),

CARRIAGE COVER

CAP (A)

CLAW

EMBROIDERY HOOP (E)

_

_._- "_:_NIT (C)

3 SCREWS (B)

POSTCARD (2 PCS,) (G)

NEEDLE PLATE(F)

- DROP FEED KNOB (D)

INSERT THE GAUGE #U1790 (1.6 M M)

58


PARTREMOVAL AND REPLACEMENT

BUTTONHOLE SENSOR

TO REMOVE:

1.

REMOVE THE FRONT COVER (SEE P.24).

2.

REMOVE SCREW (A), AND DETACH THE BUTTONHOLE SENSOR (B).

TO ATTACH:

1.

AI_ACH THE BUI-FONHOLE SENSOR (B) WITH SCREW (A). PULLTHE SENSOR FORWARD SO

THAT IT TOUCHES THE SETTING PLATE.

*MAKE SURE IT DOESN'T TOUCH THE BUTTONHOLE SHIELD PLATE. (SEE ILLUSTRATION,)

2.

PASS THE CORD, AND ATTACH THE FRONT COVER AS ILLUSTRATED.

*AFTER REPLACING THE BUTTONHOLE SENSOR, SEW A FEW BUTTONHOLES.

IF SOMETHING ISABNORMAL, ADJUST THE "BUI"fONHOLE LEVER" (SEE P.40).

BUTTONHOLE SENSOR CORD

BUTTONHOLE

SENSOR (B)

SEllING PLATE(C)

- J SCREW (A)

BUTTONHOLE SHIELD PLATE(D)

59

_NOT ToBUTTONHOLESENSOR (B)

BUTTONHOLE SHIELD

PLATE(D)

UCHING



UPPER SHAFT SENSOR

TO REMOVE:

1.

REMOVE THE FRONT COVER (SEE P.24).

2.

PUSH THE HOLDERS (A) AND REMOVE THE UPPER SHAFT SENSOR UNIT (B).

TO ATTACH:

1.

ATTACH THE NEW UPPER SHAFT SENSOR UNIT INTO THE SETTING PLATE.

*AFTER REPLACING THE UPPER SHAFT SENSOR UNIT, MAKE SURE IT DOESN'T TOUCH THE

UPPRESHAFT SHIELD PLATE(C).

2.

ATTACH THE FRONT COVER.

UPPER SHAFTSHIELD PLATE (C)

UPPER SHAFT

HOLDER (A)

UPPER SHAFTSENSOR UNIT (B)

6O

(A)



ZIGZAG STEPPING MOTOR

TO REMOVE:

1.

REMOVE THE FRONT COVER (SEE P.24).

2.

REMOVE THE E-RING (B), AND 2 SCREWS.

3.

REMOVE THE MOTOR (C).

TO ATTACH:

1.

MAKE SURE THE SMALL NOTCH MARK (F) IS IN LINE WITH THE CENTER OF CONNECTING

ARM (D) THEN ATTACH THE ZIGZAG ROD (E) BY TIGHTNING THE 2 SCREWS (A).

2.

ATTACH THE E-RING (B).

3, ATTACH THE FORNT COVER.

*AFTER ATTACHING THE MOTOR, ADJUST THE "NEEDLE POSITION" (SEE PAGE 25).

E-RING (B)

ZIGZAG STEPPING MOTOR (C)

61

SEVVING MACHINE DIV. 20 MODEL 385.19001890


FEEDSTEPPING MOTOR

TO REMOVE:

1.

REMOVE THE FRONT COVER (SEE P.24), AND BASE UNIT (SEE P.23).

2.

REMOVE THE E-RING (B), AND 2 SCREWS (A).

3.

REMOVE THE MOTOR (C) TOGETHER WITH FEED ROD (D).

TO ATrACH:

1.

MAKE SURE THE LARGE NOTCH MARK (G) IS IN LINE WITH THE CENTER OF THE PINS IN THE

CONNECTING ARM (E), THEN SLIDE THE FEED ROD (D) ONTO THE FEED ARM PIN (F).

AND THENATTACH THE FEEDSTEPPING MOTOR BY TIGHTNING THE2 SCREWS(A). (TIGHTEN

THE 2 SCREWS AT THE SPOT THAT WHERE THE FEED ARM MOVES SMOOTHLY.)

2.

AI-rACH THE E-RING (B).

3.

AI-rACH THE BASE AND FRONT COVER.

*AFTERATTACHING THE MOTOR, ADJUST THE "STRETCHSTITCHFEED BALANCE" (SEE P.37),

CONNECTING ARM (E)

2 SCREWS (A)

FEED ROD (D)

FEED STEPPING MOTOR (C)

FEED GEAR _p__ _

E-RING (B)

LARGE NOTCH MARK (G)

/

FEED ARM

PIN (F)

CENTER OF NONNECTING ARM

62

SEWING MACHINE DIV. 20 MODEL 385,19001890

HOW TO FIX A THREADJAMMING ON THETHREAD

TAKE-UPLEVER

1.

OPEN THE FACE PLATE AND LOOSEN THE SCREW (A) BY TURNING IN DIRECTION C

(CLOClGNtSE).

2.

REMOVE THE JAMMED THREADS WITH THE TWEEZERS.

3.

TIGHTEN SCREW (A) BY TURNING IN DIRECTION OF B (COUNTERCLOCKWISE).

NOTE: SCREW (A) IS A LEFT-HANDED SCREW.

SCREW (A)

(

C

_I"WEEZERS(D)

63


CHECKING

ELECTRONIC PARTS

I.MACHINE

SOCKET

PRIMARY (POWER CORD, POWER SWITCH)

*WITH THE POWER CORD CONNECTED AND THE POWER SWITCH TURNED ON, YOU

SHOULD SEEAPPROXIMATELY 120 VOLTS AC (WITH A VOLT METER) ON THE PRIMARY

CONNECTOR (N) (SEMI-OPAQUE).

,IN THIS CONDITION, WHEN THE POWER SWITCH IS TURNED OFF, MAKE SURE THE

POWER ACTUALLY GOES OFF (I.E. THATTHE SWITCH WORKS).

\

(N)

SECONDARY (FOOT CONTROL)

*CONNECT

A GOOD WORKING FOOT CONTROL AND CHECK THE RESISTANCE OF

THE SECONDARY CONNECTOR (B) (WHITE) WITH THE FOOT CONTROL IN THE UP

POSITION. ABOUT ZERO OHMS IS NORMAL.

.WHEN THE CONTROL IS PRESSED ALL THE WAY DOWN, THE MULTI-METER SHOULD

SHOW ABOUT 10 KILO-OHMS (AFTER A FEW SECONDS).

(B)

64


CHECKING ELECTRONICPARTS

2. C-BOARD

CONNECT THE TRANSFORMER TO C-BOARD AND TURN THE POWER SWITCH ON.

THE MULTI-METER SHOULD SHOW 35-42 VOLTS DC AT THE SECONDARY CONNECTOR

(M) (CNCA:BLUE).

C) 2

[ WIRING DIAGRAM ]

CNCR

FI

2.5A

CNCT2

F2

3.0A

J 2 IDBI

Z_

65

CNCT I

CNC¢_


CHECKING ELECTRONICPARTS

3. F'BOARD (CONNECTOR (I)CNFA)

*WHEN

THE START/STOP BUTTON ISPRESSED, PIN I ISSHORTED TO PIN 5.

*WHEN

THE REVERSE BUTrON ISPRESSED, PIN 2 ISSHORTED TO PIN 5,

.WHEN

THE AUTO LOCK BUTTON ISPRESSED, PIN 3 ISSHORTED TO PiN 5.

.WHEN

THE NEEDLE UP/DOWN BUTTON ISPRESSED, PiN 4 ISSHORTED TO PIN 5.

PIN 1 (RED)

PIN 5 (WHITE)

PIN 2 (WHITE)

PIN 5 (WHITE)

PIN 3 (WHITE)

PIN 5 (WHITE)

PIN 5 (WHITE)

PIN 4 (WHITE)

66

MODEL385.19001890

CHECKING FLECTRONICPARTS

4. DC MOTOR (CONNECTOR (C) CNMA)

*RESISTANCE BETWEEN PIN 4 AND PIN 5 SHOULD BE OVER 1.7 OHMS. (MAKE SURE THE

CORD IS NOT CUT.)

PIN 5 (BLACK)

\

PIN 4 (RED)

(c)

5. FOOT CONTROL

*RESISTANCE BETWEEN THE TIP AND THE SLEEVE OF THE JACK SHOULD BE APPROXI-

MATELY 0 OHMS. WHEN THE CONTROL IS PRESSEDALL THE WAY DOWN, THE MULTI-

METERSHOULD SHOW ABOUT 10 KILO-OHMS (AFTER A FEW SECONDS).

67

SEWING MACHINE DIV. 20 MODEL 385,19001890

CHECK ELECTRONIC PARTS

6. STEPPING MOTORS

ZIGZAG (D) AND FEED (E) STEPPING MOTORS:

• RESISTANCEBE1M/EENPIN 4 AND PIN 5

PiN 4 AND PIN 6

PiN 9 AND PIN 8

PIN 9 AND PIN 7...

SHOULD ALL BE APPROXIMATELY 12 OHMS.

PIN 5 (YELLOW)

PIN 4 (WHITE) ._

PIN 6 (BROWN)

PIN 4 (WHITE) ,_

PIN 9 (BLACK)

PIN 8 (BLUE)

PIN 9 (BLACK)

PIN 7 (RED)

(E)

X-AXIS (F) AND Y-AXIS (G) STEPPING MOTORS:

• RESISTANCEBETWEEN ABOVE PINS SHOULD BEAPPROXIMATELY 10.7 OHMS.

(F)

PIN 5 (YELLOW)

PIN 4 (BLACK) ._

PIN 6 (BLUE)

PIN 4 (BLACK) ._l

PIN 8 (BROWN)

PIN 9 (WHITE) _I

PiN 7 (RED)

PIN 9 (WHITE)

(G)

68


CARE

• CLEANING THE BOBBIN HOLDER

LOOSE THREADS AND DUST MAY CAUSE PUCKERED

STITCHESAND THREAD BREAKAGE DURING STITCHING.

CHECK FOR LINT BUILD-UP AFTER EACH GARMENT IS

COMPLETED.

TURN OFF THE POWER SWITCH OR UNPLUG THE

MACHINE.

1. REMOVE THE COVER PLATEBY SLIDING THE HOOK

COVER PLATE RELEASEBUI-rON TO THE RIGHT,

2. REMOVE THE BOBBIN TO BRUSH OUT DUST AND

LINT.(YOU MAY ALSO USE A SMALL VACUUM

CLEANER.)

3, INSERTTHE BOBBIN AND AFfACH THE HOOK COVER

PLATE.

• EXPOSING THE HOOK RACE

1. UNPLUG THE MACHINE AND REMOVE THE PRESSER

FOOT AND NEEDLE.

2. REMOVE THE SCREW ON THE LEFT SIDE OF THE

NEEDLE PLATE WITH THE SCREWDRIVER SUPPLIED

WITH THE MACHINE.

3. REMOVE THE NEEDLE PLATE AND TAKE OUT THE

BOBBIN.

4. LIFTUP THE BOBBIN HOLDER AND REMOVE IT,

• CLEANING THE HOOK RACE

CLEAN THE FEED DOGS, HOOK RACE AND BOBBIN

HOLDER WITH THE LINTBRUSHAND A SOFT DRY CLOTH.

(3)

_-,, , (3) _. /

(4)

(2)

• REPLACING THE BOBBIN HOLDER

INSERT THE BOBBIN HOLDER SO THAT THE KNOB FITS

NEXT TO THE STOPPER IN THE HOOK RACE.

(1) STOPPER

(2) KNOB

INSERTTHE BOBBIN.

REPLACE THE NEEDLE PLATE, INSERTING THE TWO

NEEDLE PLATE GUIDE PINS INTO THE HOLES IN THE

NEEDLE PLATE.

REPLACE THE SCREW.

(3) NEEDLE PLATEGUIDE PINS

(4) GUIDE HOLES

69


OILING

APPLY A FEW DROPS OF SEWING MACHINE OIL TO THE POINTS INDICATED BY THE AR-

ROWS. RUN THE MACHINE FOR A FEW MINUTES TO LETTHE OIL WORK INTO THE BUSH-

INGS. MOVE THE CARRIAGE BY HAND TO SPREAD OIL OVER THE GUIDE BARS.

NOTE: MAKE SURE TO AVOID STAINING THE UPPER SHAFT SHIELD PLATE OR CIRCUIT

BOARDS WITH OIL WHEN SPPLYING OIL TO POINTS (A) AND (B) BELOW.

7O


SPECIAL TOOLS REQUIRED

_DRIVER

THICKNESS GAUGE #LI 1790

*SOLENOID:

*HEIGHT OF EMBROIDERY

PRESSERFOOT P:

*BUTrONHOLE LEVER

*CARRIAGE PLATE COVER:

P.35

P.38

P,40

E58

FEED DOG HEIGHT GAUGE #68499

(*FEED DOG HEIGHT: P.32-33

PHILLIPSSCREW DRIVER

ALLEN SCREW DRIVER

__ [ SIZE:DLR4 ]

NEEDLE HEIGHT GAUGE _58168

(*NEEDLE BAR HEIGHT:

7

P.26-27

)

TESTPIN #68368

*NEEDLE TO SHUYrLETIMING: P.28-29"

*CLEARANCE

BETWEEN NEEDLE

AND HOOK: P.30

NCH

RADIAL TIMING

GAUGE SHEET

#U1369C

(*NEEDLE TO SHUTTLETIMING: P,28-29 )

71

mechanical adjustment

SERVICE MANUAL

SEWING MACHINE

CONTENTS

III lU

BASIC CHECK

*IS NEEDLESETOK ?

*IS THREADING

MECHANICAL

WHAT TO DO WHEN

ELECTRONIC QUICK CHECK

/

WHEN MESSAGESAPPEAR ON THESCREEN

TO ATTACH THE STABILIZER

SERVICEACCESS

SERVICEACCESS

SERVICEACCESS

SERVICE ACCESS

SERVICEACCESS

MECHANICAL ADJUSTMENT

©

×

×

MECHANICAL ADJUSTMENT

THREAD

MECHANICAL

t

I CLOSED

I+--[ OPEN] CLOSED

MECHANICAL

+

÷

MIoI"E"u/

BOBBIN THREAD TENSION (2)

PART REMOVAL AND REPLACEMENT

|

__" kL_<

.-"

SCREW

" " _oJ

/

PARTREMOVAL AND REPLACEMENT

PARTREMOVAL AND REPLACEMENT

HOW TO FIX A THREADJAMMING ON THETHREAD

CHECKING

ELECTRONIC PARTS

(B)

CHECKING ELECTRONICPARTS

CHECKING FLECTRONICPARTS

\

CHECK ELECTRONIC PARTS

(G)

CARE

SPECIAL TOOLS REQUIRED

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