SERVICE MANUAL
SEWING MACHINE MODEL
385.19001890
NOVEMBER,1998
CONTENTS
SPECIFICATIONS .....................................................................................I-4
WIRING DIAGRAM ....................................................................................5
GENERAL TROUBLE SHOOTING PROCEDURE .........................................6
WHAT TO DO WHEN ...............,..............................................................7-10
ELECTRONIC QUICK CHECK .............................................................11-13
MAIN KEY FUNCTION ..............................................................................14
WINDING THE BOBBIN .............................................................................15
THREADING THE MACHINE .....................................................................16
WHEN MESSAGES APPEAR ON THE SCREEN .........................................17
TO ATrACH THE STABILIZER......................................................................18
TO SETTHE FABRIC INTHE EMBROIDERY HOOP ....................................18
SERVICE ACCESS
FACE COVER ..............................................................................19
TOP COVER ................................................................................19
BELTCOVER ................................................................................20
BASE COVER ...............................................................................21
BED COVER ................................................................................22
BASE UNIT....................................................................................23
FRONT COVER ............................................................................24
MECHANICAL ADJUSTMENT
NEEDLE POSITION .......................................................................25
NEEDLE BAR HEIGHT ..............................................................26-27
NEEDLE TO SHUTTLE TIMING ..................................................28-29
CLEARANCE BETWEEN NEEDLE AND HOOK ............................30
BACKLASH (LOWER SHAFT GEAR) ............................................31
FEED DOG HEIGHT ................................................................32-33
UPPER SHAFT SHIELD PLATE POSITION .......................................34
*SOLENOID ...................................................................................35
TENSION RELEASE MECHANISM ................................................36
STRETCH STITCHFEED BALANCE ...............................................37
*HEIGHT OF EMBROIDERY PRESSER FOOT (P)............................38
NEEDLE THREAD TENSION ..........................................................39
*BUI-rONHOLE LEVER ..................................................................40
PRESSER BAR HEIGHT AND ALIGNMENT ................................... 41
OVER LOAD (1), (2) ............................................................... 42-43
*ADJUSTMENT OF TOUCH PANEL ............... ............................................ 44
*BOBBIN THREAD TENSION (1),(2) ..................................................... 45-46
PART REMOVAL AND REPLACEMENT
NEEDLE THREAD TENSION UNIT .................................................. 47
FEED DOG ................................................................................... 48
THREADER PLATE ......................................................................... 49
C-BOARD UNIT AND FUSE.......................................................... 50
TRANSFORMER ........................................................................... 51
MACHINE SOCKET UNIT ............................................................. 52
A-BOARD UNIT ............................................................................ 53
LCD UNIT ..................................................................................... 54
F-BOARD UNIT ............................................................................. 55
SLIDE VOLUME UNIT .................................................................... 56
DC MOTOR UNIT AND BELTTENSION ........................................ 57
*CARRIAGE PLATE COVER UNIT .................................................. 58
*BUI-IONHOLE SENSOR ................................................................ 59
*UPPER SHAFT SENSOR ................................................................. 60
*ZIGZAG STEPPING MOTOR ........................................................ 61
*FEED STEPPING MOTOR ............................................................. 62
*HOW 1O FIXA THREAD JAMMING ON THETHREAD TAKE-UPLEVER............. 63
CHECKING ELECTRONIC PARTS
*MACHINE SOCKET ...................................................................... 64
*C-BOARD .................................................................................... 65
*F-BOARD UNIT ............................................................................. 66
*DC MOTOR ................................................................................. 67
*FOOT CONTROL ........... : ............................................................. 68
*STEPPING MOTORS ..................................................................... 69
CARE ..................................................................................................... 69
OILING .................................................................................................... 70
SPECIAL TOOLS REQUIRED ................................................................... 71
*NEW ITEM
SEWING MACHIN E DIV. 20 MODEL 385.19001890
(A) GENERAL SPECIFICATIONS
I. TYPE:
2. CONVERTIBILITY:
3. SHUTTLESYSTEM:
4. STITCHPACKAGE:
BUILT-INSTITCH:
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. STITCHWIDTH:
16-2. STITCHLENGTH:
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 FULLROTARYSHU_LE
65 PLUS840 BUILT-INMONOGRAMS
65
10 (UTILITY)
33 (STRETCH)
21 (DECORATIVE)
1 (DARNING)
840 (MONOGRAMS)
5 STYLES
REGULAR (SQUARE) X 3
ROUND
KEY HOLE
AUTOMATLC CLUTCH
(AUTO DECLUTCH TYPE)
SLITTAKE-UP LEVER
HIGH BAR
WHITE (J-N47)
7MM / MULTIPLENEEDLE POSITIONS
126 MM (5") X 90 MM (3.5")
DROP FEED SYSTEM
CONCEALED
BUILT-IN
SNAP-ON/OFF SYSTEM
ELECTRONIC TOUCH CONTROL PANELAND
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)
SE'WlNGMACHINEDIV.20 MODEL385.19001890
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 STITCHFOOT (H)
SATIN STITCHFOOT (F)
ZIPPERFOOT (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 SPORTSSERIES
*WILD ANIMAL SERIES
*SPECIAL OCCASION SERIES
*FRUITAND VEGETABLE SERIES
*DOG SERIES
*BIG FLORAL SERIES
*FLORAL SCRIPTSERIES
PUSH BUTTONSYSTEM
PUSH BUTTONSYSTEM
YES
YES
YES
POP UPTYPE
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 (834412008)
K-10 (834448003)
K-11 (834449004)
SEWINGMACHINEDIV.20 MODEL385.19001890
27.
*MUSICAL INSTRUMENTSERIES
*FLORAL ART AND QUILTING DESIGNS
*SEWING-RELATED DESIGNS
*OCEAN LIFEDESIGNS
*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 STITCHFLORAL DESIGNS
*NOAH'S ARK DESIGNS ], 11"
SPECIFICATION OF
MICRO-COMPUTER:
28. DRIVING MOTOR:
29. FOOT CONTROL:
30. STEPPING MOTOR:
31. MAXIMUM SPEED:
32. NEEDLETHREADING:
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 8M BITS
RAM 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 (STRAIGHT STITCH)
500 RPM (AUTOMATIC BUI-rONHOLE)
700 RPM (OTHER STITCHES)
400 PRM (EMBROIDERY)
INTEGRATED NEEDLE THREADER
SEMI-AUTO TENSION CONTROL
(ROLLER TYPE)
YES
3
SEWING MACHINE DIV. 20 MODEL 385.19001890
(B) STITCH PACKAGE DETAIL
1. TOTAL STITCHES: 65
2. BUILT-INSTITCHES: 60
UTILITY: 10
STRETCH: 33
DECORATIVE: 21
DARNING 1
3. BUILT-INMONOGRAM 840
UTILITY STRETCH DECORATIVE
' I 4
O
El
L7
HI
Hi
HI
Ill
I
III
lU
) l
E )
X
X
_:) n
i !, l
I T
)1
3
:>
BUTi'ONHOLE
0 0
g
DARNING
I
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): UPPERSHAFTSENSOR
(B): MACHINE SOCKET UNIT (SECONDARY)
(C): DC MOTOR
(D): ZIGZAG WIDTH STEPPING MOTOR
(E): FEEDSTEPPING 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)
(N)
5
SEWING MACHINE DIV. 20 MODEL 385. ] 9001890
GENERALTROUBLESHOOTING PROCEDURE
(MACHINE OOESN"TWORK WELL)
CORRECT IT
START
BASIC CHECK
>10'K'
MECHANICAL
*IS NEEDLESETOK ?
O,K.
(
_t
ADJUSTMENT
SEWING CHECK I
...... *IS POWER SUPPLY OK ?
*IS THREADING OK ?
} } ELECTRICAL } } CAN'TJUDGE
l END
ELECTRIC QUICK CHECK
_N.G,
REPLACE PARTS
ELECTRIC QUICK CHECK
6
SEWING MACHINE DIV. 20 MODEL 385.19001890
WHATTO DO WHEN
CONDITION HOW TO FIX REFERENCE
1, INSERTTHE NEEDLE PROPERLY.
1. SKIPPING
STITCHES
2. FABRIC NOT
MOVING
CAUSE
NEEDLE IS NOT INSERTED
PROPERLY.
2. NEEDLE ISBENTOR WORN.
3. INCORRECTLY THREADED,
4. NEEDLE ORTHREAD ARE
INAPPROPRIATE FOR
FABRIC BEING SEWN.
5, SEWING ON STRETCH
FABRIC
6, PRESSERFOOT PRESSURE
ISTOO WEAK.
7. INAPPROPRIATE NEEDLE
BAR HEIGHT
8. INAPPROPRIATE NEEDLE TO
SHUI-rLETIMING
9. INAPPROPRIATE NEEDLE TO
SHUYi-LECLEARANCE
10. STABILIZERISNOT BEING
USED WITH STRETCHOR FINE
FABRICS.
11. FABRIC ISNOT SETPROP-
ERLYON EMBROIDERY
HOOP.
12. SEWING WHILE PRESSERBAr,
LIFTERISRAISED
,
.
PRESSERFOOT PRESSURE
ISTOO WEAK.
INCORRECT FEEDDOG
HEIGHT.
3. FEED DOG ISIN DOWN
POSITION.
*ALLITEMSAREAPPLICABLETOBOTHCONVENTIONALAND
7
CHANGE THENEEDLE.
RETHREAD.
USETHE RECOMMENDED
SEWING NEEDLE AND
THREAD,
USEA#11 BLUETIPNEEDLE.
ADJUST THE PRESSERDIAL TO
MAKE THE PRESSURE
STRONGER.
SEEMECHANICAL
ADJUSTMENT
"NEEDLE BAR HEIGHT".
SEEMECHANICAL
ADJUSTMENT "NEEDLETO
SHUTTLETIMING".
SEEMECHANICAL
ADJUSTMENT "CLEARANCE
BETWEENNEEDLE AND HOOK".
USESTABILIZER.
PLACE THEFABRIC TIGHTLYIN
THE EMBROIDERY HOOP(NO
LOOSE FABRIC),
SEWWITH THE PRESSERBAR
LIFTERDOWN,
ADJUST THE PRESSERDIAL TO
MAKE THE PRESSURE
STRONGER.
SEEMECHANICAL
ADJUSTMENT "FEED DOG
HEIGHT".
RAISE THE FEED DOG.
P.26 - 27
P.28 - 29
R 30
P. 18
(EMBROIDERY
ONLY)
E18
[EMBROIDERY
ONLY)
CONVENTIONA
_'_VINGONLY)
P.32 - 33
CONVENTIONA
•"_/ING ONLY)
CONVENTIONA
EWING ONLY)
EMBROIDERY SEWING WHERE OTHERWISE SPECIFIED.
SEWING MACHINE DIV. 20 MODEL 385.19001890
CONDITION HOW TO FIX REFERENCE
3. BREAKING
UPPER
THREAD
CAUSE
4. THREAD ON BO1-POMSIDE
OF FABRIC ISJAMMED UP.
5. FEEDDOG TEETHARE
WORN.
1. INITIAL SEWNG SPEEDIS
TOO FAST.
2. THREAD PATHIS INCORRECT
3. NEEDLE ISBENTOR DULL.
4. NEEDLETHREAD TENSION IS
TOO TIGHTE.
5, NEEDLESIZEIS
INAPPROPRIATE FOR
FABRIC,
6, NEEDLE EYEISWORN.
7. NEEDLE HOLE IN NEEDLE
PLATEWORN OR BURRED.
+
WHEN STARTINGTO SEW,
THE NEEDLE THREAD ISNOT
SECURED BY THE THREAD
HOLDER,
9. IN EMBROIDERY SEWING,
THEPATrERN ISBEING SEWN
OVER ANOTHER PAl-FERN.
10, AFTERCHANGING THE
NEEDLE THREAD, ITJAMS
AROUND THESPOOL PIN.
11. WHEN NEEDLE THREAD IS
CHANGED, THREAD ISNOT
GUIDED INTO THETHREAD
TAKE-UP LEVER.
MAKE SURETO BRING
BOTH NEEDLE AND BOBBIN
THREADS UNDER THE FOOT
WHEN STARTINGSEWING.
CHANGE THEFEED DOG.
STARTWITH MEDIUM SPEED.
USETHE PROPER THREAD PATH
REPLACE WITH A NEW NEEDLE
SEEMECHANICAL
ADJUSTMENT "NEEDLETHREAD
TENSION."
USEAPPROPRIATE NEEDLE
FOR FABRIC AND THREAD
IN USE,
CHANGE THE NEEDLE.
REPLACE THE NEEDLE PLATE.
PLACE THETHREAD IN THE
THREAD HOLDER.
LEAVE SUFFICIENTSPACE BE-
FORE SEWING SECOND PAT-
TERN.
CLEAR OUT THEJAMMING
THREAD,
THREAD THETAKE-UP LEVER
CORRECTLY.
P.48
(CONVENTIONAl
SEWING ONLY)
CONVENTIONAL
IEWlNG ONLY)
R 15-16
R 39
(EMBROIDERY
ONLY)
EMBROIDERY
ONLY)
R16
P, 16
SEWINGMACHINEDIV.20 MODEL385.19001890
CONDITION
4, BREAKING
BOBBIN
THREAD
5. NEEDLE
BREAKS
CAUSE
1. INCORRECTLYTHREADED
BOBBINHOLDER,
2. TOOMUCHTHREADIS
WOUNDONTHEBOBBIN.
3. LINTISSTUCKINSIDETHE
BOBBINHOLDER.
4. THREADQUALITYISTOO
LOW.
5. THREADISJAMMING
AROUNDTHEBOBBIN.
1. NEEDLEISHITTINGTHE
NEEDLEPLATE.
2. NEEDLEISBENTORWORN.
3. NEEDLEISHITTINGTHE
SHUTTLE.
.
,
.
17.
THE FABRIC MOVES WHILE
THE NEEDLE IS PIERCING IT,
OR THE NEEDLE ZIGZAGS
WHILE IN FABRIC.
FABRIC ISBEING PULLED
TOO STRONGLY WHILE
SEWING.
THE NEEDLE THREAD
TENSION ISTOO TIGHTE.
IN EMBROIDERY SEWING,
THE PATTERNISBEING SEWN
OVER ANOTHER PATTERN.
HOW TO FIX
THREAD BOBBIN HOLDER
CORRECTLY.
ADJUST THE POSITION OF
STOPPER.
CLEAN THE SHUTTLE.
CHANGE TO A HIGH QUALITY
SEWING THREAD.
CLEAR OUT THEJAMMING
THREAD.
SEEMECHANICAL
ADJUSTMENT "NEEDLE
POSITION".
CHANGE THE NEEDLE.
SEEMECHANICAL
ADJUSTMENT "CLEARANCE
BETWEENNEEDLE AND
HOOK".
' SEEMECHANICAL
ADJUSTMENT "UPPER SHAFT
SHIELD PLATEPOSITION".
GUIDE THE FABRIC GENTLY
WHILE SEWING.
SEEMECHANICAL
ADJUSTMENT "NEEDLETHREAD
TENSION,'
LEAVE SUFFICIENTSPACE
BEFORE SEWING SECOND
PAI_ERN.
REFERENCE
P. 15
E 69
P.25
P.30
:CONVENTIONA
_'WING ONLY)
P.34
CONVENTIONA
EWINGONLY)
P.39
(EMBROIDERY
ONLY)
9
SEWING MACHINE DIV. 20 MODEL 385.19001890
CONDITION
6. NOISY
OPERATION
7. PAI"[ERN
DISTORTION
8. UPPER
THREAD
LOOPING
CAUSE HOW TO FIX REFERENCE
1. E 31
,
3,
BACKLASH BE[WEEN
SHUI_LE HOOK GEAR AND
LOWER SHAFTGEAR IS
TOO GREAT.
LOWER SHAFTGEAR IS
LOOSE.
INAPPROPRIATE BELT
TENSION
4. NOT ENOUGH OIL
1. INAPPROPRIATE FEED
BALANCE
.
,
.
5.
.
.
8.
.
.
INAPPROPRIATE ZIGZAG
SYNCHRONIZATION
UPPERTHREAD TENSION IS
TOO STRONG.
EMBROIDERY FOOT ISNOT
BEING USED.
STABILIZERISNOT BEING
USED WITH STRETCHOR
FINE FABRICS.
THE FABRIC ISNOT SET
PROPERLYON THE
EMBROIDERY HOOP.
EXTENSION TABLEISNOT
SETCORRECTLY.
EMBROIDERY FOOT
CATCHES THE
CONNECTING THREAD.
FABRIC ISTOO SMALL FOR
EMBROIDERY HOOP.
UPPERTHREAD TENSION IS
TOO LOOSE.
SEEMECHANICAL
ADJUSTMENT '" BACKLASH
(LOWER SHAFTGEAR)".
ELIMINATE THE LOOSENESS.
SEEPART REMOVAL AND
REPLACEMENT "DC MOTOR
UNIT AND BELTTENSION'".
OIL ALL MOVING PARTS.
SEEMECHANICAL
ADJUSTMENT " STRETCH
STITCHFEED BALANCE ".
SEEMECHANICAL
ADJUSTMENT " UPPERSHAFT
SHIELD PLATEPOSITION'".
SEEMECHANICAL
ADJUSTMENT "NEEDLE
THREAD TENSION",
USEEMBROIDERY FOOT.
USESTABILIZER.
PLACE THE FABRIC TIGHTLY
IN THE EMBROIDERY HOOP
(NO LOOSE FABRIC).
SETTHEEXTENSION TABLE
CORRECTLY.
CUT THECONNECTING
THREAD WHEN CHANGING
THE COLOR OF THREAD.
USEA PIECE OF FABRIC
LARGER THAN HOOP.
SEEMECHANICAL
ADJUSTMENT "NEEDLETHREAE
TENSION."
P.57
P.7O
P.37
[CONVENTIONA
SEWINGONLY)
R 34
(CONVENTIONA
BEING ONLY)
R 39
(EMBROIDERY
ONlY)
R18
(EMBROIDERY
ONLY)
R18
(EMBROIDERY
ONLY)
(EMBROIDERY
ON{Y)
R18
(EMBROIDERY
ONLY)
P,39
10
SEWING MACHINE DIV. 20 MODEL 385.19001890
ELECTRONICQUICK 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 (SEEPAGE 50).
CHECK THETRANSFORMER (SEEPAGE 51).
CHECK THE SOCKET (SEEPAGE 52),
IF THEC-BOARD,TRANSFORMER AND SOCKET ARE ALL OK, AND
NOTHING HAPPENS ON THE MACHINE, REPLACE THEA-BOARD (SEEPAGE 53).
*IF SEWING LIGHT DOES NOT TURN ON;
1. CHECK THEFILAMENT IN THE LIGHT BULB.
IFTHE FILAMENT ISBROKEN, REPLACE THE LIGHT BULB.
2. IF LIGHT BULBISOK, AND LIGHT STILLDOES NOT TURN ON, REPLACE
THEA-BOARD (SEE PAGE 53).
*IF LCD DOES NOT TURN ON;
1, TURN THESCREEN SHARPNESSADJUSTMENT DIAL.
2. IF LCD STILLDOES NOT SHOW ANYTHING, REPLACE THEA-BOARD FIRST.IF
LCD STILLDOES NOT TURN ON, REPLACE THELCD.
*IF LCD SHOWS NOTHING;
1. REPLACE A-BOARD FIRST.IF LCD STILLSHOWS NOTHING, REPLACE THE LCD.
2.PREPARATION
_BECAREFUL IN CHECKING ALL OPERATIONS SINCE THEMACHINE MAY
SUDDENLY STARTRUNNING,
1. TURN THE POWER SWITCH OFF,
2. SETTHEBOBBIN WINDER SPINDLETO THE LEFT,
3. RAISE THE FEED DOG.
4. SHIFTSPEEDSETTINGSLIDE LEVERTO THE LEFT.
5. DETACH THE PRESSERFOOTAND RAISE THE PRESSERFOOT LIFTER.
6. MOVE THE NEEDLE BAR TO THE UP POSITION.
7, CONNECT THEFOOT CONTROL.
8. LOWERTHE BH LEVER,
11
SEWING MACHINE DIV. 20 MODEL 385.19001890
ELECTRONICQUICK CHECK
CHECK OPERATION
*THIS QUICK CHECK MUST BE PERFORMED IN THESEQUENCE SHOWN.FOLLOW EACH STEP
CAREFULL,DO NOT SKIPANY PROCEDURE.
*ON THE FOLLOWING STEPS
.PRESS UP/DOWN NEEDLE BuYroN IF CORRECT CONDITION FOR NEXTSTEP.
.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) SPEEDSET-
TiNG SLIDE
LEVERTEST
06) FOOT
CONTROLLEi_
TEST
TEST
TURN ON THE
POWER SWITCH
WHILE PRESSING
REVERSEBU_ON
CORRECTCONDITION
•BUZZERSOUNDS
(LCD SHOWS
PRESSFOLLOWING
KEYSSEQUENTIALLY
•START/STOP
BuYroN
•REVERSEBUYTON
•AUTO-LOCK
BUTTON
•UP/DOWN BUT-
TON
•PRESS"PRESSTHIS
KEY"ON LEFTSIDE
PRESSAPPOINTEDKEY
PRESS
THISKEY_'_
• PRESS*PRESSTHIS
KEY"ON RIGHT
SIDE
•SHIFTTHE BOBBIN
WINDER SPINDLE
TO THERIGHT
THEN THE LEFT
*SHIFT SPEED
SETTINGSLIDE
LEVERTO RIGHT,
THEN TURN BACK
TO LEFT
• DEPRESSTHE
FOOT CONTROL-
LERFULLYAND
RELEASEtT
"BUZZER")
(LCD SHOWS "S/S,
REV, AL, U/D KEY")
• BUZZERSOUNDS
FOR NEXTSTEP
• BUZZERSOUN DS
AND INDICATES
"PRESSTHISKEY"AT
RIGHT HAND SIDE
ON LCD
• BUZZERSOUNDS
FOR NEXT STEP
(LCD SHOWS
"SPOOL')
*BUZZER SOUNDS
EVERYTIME WHEN
BOBBIN WINDER
SPINDLE ISSHIFTED
(LCD SHOWS
"SLIDING VOLUME")
*BUZZER SOUNDS
AT LEFT& RIGHT
POSITION
(LCD SHOWS
"CONTROLLER")
•BUZZERSOUNDS
WHEN FOOT
CONTROLLER IS
DEPRESSEDFULLY
AND RELEASED
DEFECT CONDITION & CORRECTION
• NO BUZZER
SOUNDS AND
COULD NOT
ENTERTEST
MODE
oLCD MODULE
PROGRAM
VERSION. ALSO,
PROGRAM WILL
BELOCKED
• NO BUZZER
SOUNDS AND
PROGRAM WILL
BELOCKED
•NO BUZZER
SOUNDS AND
PROGRAM WILL
BELOCKED
• NO BUZZER
SOUNDS
• NO BUZZER
SOUNDS
• NO BUZZER
SOUNDS
• REPLACE A-
BOARD (SEEP.53)
• FIRST,CHECK THE
F-BOARD (SEE
P.66) IFF-BOARD
ISOK, THEN
REPLACE THE A-
BOARD (SEEP.53)
• FIRST,REPLACE A-
BOARD (SEEP.53)
IF NO SOUND
OCCURS AFTER
REPLACING A-
BOARD, REPLACE
THE LCD UNIT (SEE
P.54)
•REPLACE A-
BOARD (SEEP.53)
• FIRST,CHECK
SLIDING VOLUME
(SEEP.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
SEWING MACHINE DIV. 20 MODEL 385.19001890
STEP
07) PRESSER F-OO"
SENSOR TEST
08) BUITONHOLE
SENSOR TEST
09) UPPERSHAFT
POSITIONING
SENSOR TEST
10) STEPPING
MOTOR TEST
11) MACHINE
MOTOR TEST
TEST
(LCD SHOWS "FOOl
LEVER')
• PRESSU/D NEEDLE
BUTTON FOR NEXT
STEP
•SHIFTTHE BH
LEVERBACK &
FORTH GENTLY
•TURN THE HAND
WHEEL TOWARD
YOU TO MOVE
THE NEEDLE BAR
TO HIGHEST POSI-
TION AND LOWEST
POSITION
•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
CORRECTCONDmOB DEFECT CONDITION & CORRECTION
(LCD SHOWS "BH
SENSOR STATE')
•WHEN LEVBRIS
PULLEDTOWARD
YOU--BUZZER
SOUNDS & INDI-
CATES "CLOSED"
ON LCD BOARD
•WHEN LEVERIS
RELEASED--
BUZZERSOUNDS &
INDICATES "OPEN"
ON LCD BOARD
(LCD SHOWS "BH
SENSOR")
•LCD SHOWS
"BIGHT" WHEN
NEEDLE ISAT
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
• NOT WORKING
CORRECTLY
• NOT STOPPING
AT THE HIGHEST
POSITION OR
RUNNING AT
UNEVEN SPEED
• 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 (SEEP.59]
• FIRST,REPLACE A-
BOARD (SEEP.53)
IF LCD ISSTILL
INCORRECT,
REPLACE UPPER
SHAFTSENSOR
(SEEP.60)
• FIRST,CHECK
STEPPING MOTOR
(SEEP.69). IF
STEPPING MOTOR
ISOK, REPLACE
A-BOARD (SEE
P.53)
(LCD SHOWS "STEP-
PING MOTOR')
•ZIGZAG STEPPING
MOTOR WILL
MOVE THE
NEEDLE, LEAVING
IT IN THECENTER
POSITION
•THE FEED DOGS
WILL MOVE BACK
AND FORTH IN THE
LOWER POSITION,
THENSTOP
•X AND Y-AXIS
STEPPINGMOTOR
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
• FIRST,CHECK THE
DC MOTOR (SEE
P.67). IF DC
MOTOR ISOK,
REPLACE A-
BOARD (SEEP.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 MODEL 385.19001890
MAIN KEYFUNCTION
/_ (5) (6) (7)
1c I. u
(1)
(1) START/STOP BUTTON ................ CONVENTIONAL AND EMBROIDERY SEWrNG
.. WITHOUT FOOT CONTROL
(2) REVERSEBU_QN ..................... REVERSESTITCHING WHILE PREYING THISBUI_QN
(3) AUTO-LOOK BUNON .............. SEWS IN PLACE FOR A FEW STITCHESTHEN AUTO-
MATICALLY STOPS
(4) UP/DOWN NEEDLE BUTrON .,. FOR CHANGING THE NEEDLE POSITION (UP OR
DOWN)
(5) MEMORY KEY .......................... FOR MEMORIZING LETFERSAND NUMBERS(EMBROI-
DERY ONLY)
(6) CLEAR KEY ............................... TO CLEAR THE MEMORIZED MONOGRAMS
(EMBROIDERY ONLY)
(7) MENU KEY ................................ FOR CHOOSING BETWEENCONVENTIONAL SEWING
AND EMBROIDERY SEWING
(8) LEI-FERSIZEKEY ........................ FOR CHANGING THESIZEOF LETTERS/NUMBERS
(EMBROIDERY ONLY)
(9) UPPER/LOWER CASE KEY ....... FOR SELECTING UPPER OR LOWER CASE LETTERS
(EMBROIDERY ONLY)
(10) SPACE CHECK KEY .................. TO MOVE THE CARRIAGE TO THEDESIRED POSITION
(EMBROIDERY ONLY)
(11) PREVIOUS PAGE KEY............... TO CHANGE THE PATrERNSCREEN TO PREVIOUS
PAGE
(12) NEXT PAGE KEY ....................... TO CHANGE THE PATTERNSCREEN TO NEXTPAGE
(13) RETURNKEY.............................. TO RETURNTO THE PREVIOUS DISPLAY
14
SEWINGMACHINEDIV.20 MODEL385.19001890
WINDING THEBOBBIN
(1) PASSTHE THREAD AROUND THREAD GUIDE.
(2) THEN THROUGH THEHOLE INTHE BOBBIN.
(3) PUTTHE BOBBIN ON THE BOBBIN WINDER SPINDLE, AND PUSHTHE BOBBIN TO THE RIGHT.
(4) WHEN THE BOBBIN ISFULLYWOUND, ITWILL STOP AUTOMATICALLY. RETURNTHEBOBBIN
WINDER TO ITSORIGINAL POSITION BY MOVING THESPINDLETO THELEFT,AND CUT THE
THREAD AS SHOWN.
/
I
• INSERTING THE BOBBIN
(2)
(1)
PLACE THE BOBBIN IN THE BOBBIN HOLDER WITH THE
THREAD RUNNING OFF IN THE COUNTERCLOCKWISE
DIRECTION.
(1) END OF THREAD
• (2)
GUIDE THETHREAD INTO THE NOTCH (A) ON THE FRONT
SIDE OF THEBOBBIN HOLDER.
DRAW THETHREAD TO THELEFT,SLIDING ITBEIWEEN THE
TENSION SPRING BLADES,
(2) NOTCH (A)
CONTINUE TO DRAW THE THREAD LIGHTLY UNTIL THE
THREAD SLIPSINTO NOTCH (B).
PULLOUT ABOUT 15 CM (6") OF THREAD.
(3) NOTCH (B)
(4)
ATTACH THE HOOK COVER PLATE.
CHECK THE THREADING BY REFERRING TO THE CHART
SHOWN ON THE HOOK COVER PLATE,
(4) THREADING CHART
15
SEWING MACHINE DIV. 20 MODEL 385.19001890
THREADINGTHEMACHINE
RAISETHEPRESSERFOOT LIFTER,AND PASSTHETHREADTHROUGH POINTS (I) TO (6).
(1) HOLD THE UPPERTHREAD AND PASSTHETHREAD UNDER THETHREAD GUIDE. PULLTHE
THREAD DOWN ALONG THEGROOVE.
(2) DRAW THE THREAD AROUND THE CHECK SPRING HOLDER FROM RIGHT TO LEFT,THEN
PULL UPTHE THREAD.
(3) FIRMLY DRAW THE THREAD FROM RIGHT TO LEFTAND PULL ITTOWARD YOU INTO THE
EYEOF THE THREAD TAKE-UP LEVER,THEN DOWN TO THE LOWER THREAD GUIDE.
(4) DRAW THETHREAD FROM RIGHTTO LEFTBEHIND THE LOWER THREAD GUIDE.
(5) SLIDETHETHREAD BEHIND THE NEEDLE BAR THREAD GUIDE FROM THELEFT.
(6) THREAD THE NEEDLE FROM FRONT TO BACK USING THE NEEDLE THREADER.
(3) ; (1)
(6)
(5)
16
(4)
J
J
SEWING MACHINE DIV. 20 MODEL 385.19001890
WHEN MESSAGESAPPEARON THESCREEN
MESSAGE FOR THREAD BROKEN TURN OFF THE
POWER SWITCH, AND RE-THREADING.
THEVISUAL TOUCH SCREEN SHOWS 'BOBBIN WIND-
ING" CONDITION.
AFTER THE BOBBIN ISWOUND, RETURNTHE BOBBIN
WINDER TO ITSORIGINAL POSITION BY MOVING THE
SPINDLETO THE LEFT.
STOPFOR SAFETYPURPOSES
INSERTCPRD €..=
OOOOOOO
0000000
RAISE THE NEEDLE BAR BY PRESSING THE UP/DOWN
NEEDLE BUTTON.
(THIS MESSAGE WILL APPEAR WHEN THE POWER
SWITCH ISTURNED ON WITH THENEEDLE LOWERED.)
TURN OFF THE POWER SWITCH, AND INSERT THE
MEMORY CARD AGAIN.
PRESS THIS BUTTON "@"
TO RAISE NEEDLE BPR
I STOPOPERATING THEMACHINE UNTILTHISMESSAGE
•" "•" •" DISAPPEARS(ABOUT 15 SECONDS).
(WHEN THE MACHINE ISOVER LOADED.)
SYSTEM ERROR
ZIGZAG STEPPING
MOTOR
FEED STEPPING
MOTOR
\
I *°'**°° 1.
.
3.
4.
5.
CHECK THE MECHANISM OF ZIGZAG, FEED AND
CARRIGE IF THERE ISANY FOREIGN OBJECT OR
MECHANICAL PROBLEM WHICH OBSTRUCTS
MOVEMENT OF STEPPING MOTOR MECHANISM.
CHECK THE GEAR AREA OF THE4 STEPPINGMO-
TORS FOR LINT,AS ILLUSTRATED.
CHECK ALL CONNECTORS OF THESTEPPINGMO-
TORSARE SECURLYCONNECTED.
CHECK THE STEPPING MOTOR FUNCTION BY
"ELECTRONIC QUICK CHECK".
CHECK STEPPINGMOTORS BYA ELECTRICTESTER.
@ -AXIS STEPPING MOTOR
Y-AXIS STEPPING MOTOR
17
SEWINGMACHINEDIV.20 MODEL385.19001890
TO ATTACH THESTABILIZER
PLACE THE GLUE (SHINY) SIDE OF THE STABILIZERON
THEFABRIC AND IRON AS ILLUSTRATEDUSING MEDIUM
TEMPERATURE,
(1) STABILIZER
(2) FABRIC
I
TO SETTHEFABRICIN THEEMBROIDERYHOOP
MARK THEDESIREDEMBROIDERING POSITION ON THE
FABRIC AS ILLUSTRATEDUSING TAILOR'S CHALK.
(3) FABRIC
(4) REFERENCELINES
PLACE THETEMPLATEON THEFABRIC, MATCHING THE
REFERENCELINESLOCATED ON THETEMPLATE TO THE
REFERENCELINESYOU PREVIOUSLYMARKED ON THE
FABRIC.
TAPE THE TEMPLATE TO THE FABRIC AS SHOWN TO
HOLD THETEMPLATEIN PLACE. (SCOTCH TAPE ISREC-
OMMENDED.)
(5) TAPE
(6) TEMPLATE
PLACE THEFABRIC WITH THETEMPLATEATTACHED TO
ITAND SETITON TOP OF OUTER HOOP.
SETTHEINNER HOOP ON TOP OF YOUR FABRIC.
(7) INNER HOOP
(8) RIGHT SIDE OF FABRIC
(9) STABILIZERON WRONG SIDE OF FABRIC
(10) OUTER HOOP
PUSHTHEFLATSIDE "A" OF THEINNER 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 PARTOF THEOUTER HOOP SO THEMATERIAL
ISSECURE.
TAKEOUT THETEMPLATEBY PU_ING YOUR FINGER IN
THE THUMB HOLE LOCATED ON THE TEMPLATE AND
LIFTUP.
(11) FOR EASYREMOVAL OF TEMPLATE (THUMBHOLE)
(6) (5)
A
(_(8)
(10)_C (9)
(11)
18
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 THEFACE COVER BY LIGHTLYTIGHTENING THE2 SCREWS (A).
3. CLOSE THE FACE COVER, CAREFULLY ALIGNING ITWITH THE BODY. THEN TIGHTEN THE
SCREWS FIRMLY.
TOP COVER
TO REMOVE:
1. REMOVE THE CAP(C) AND SCREW (D). LIFTTHECARRYING HANDLE (E) UP. REMOVE
THE SCREW (F).
2. LIFTTHECARRYING HANDLE UP. REMOVE THETOP COVER (G) IN THEDIRECTION SHOWN.
TO ATTACH:
3, REVERSETHIS PROCEDURE.
FACE COVER (B)
SCREW (A)
SCREW (F)
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. REVERSETHISPROCEDURE.
HANDLE
_._- SCREW (A)
BELTcovER (E)
FRONT PANEL
SCREW (B) ..
SCREW (C) ;"
WASHER(D)
2O
SEWING MACHINE DIV. 20 MODEL 385.19001890
BASECOVER
TO REMOVE:
I.
2.
3.
SERVICEACCESS
MOVE THE CARRIAGE (A) BY HAND, WHEN MOVING IT,HOLD THE LOWER PART,NEVER
THE UPPERPART.
REMOVE THE 3 SCREWS (B) AND REMOVE THECARRIAGE 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
WINDOW FRAME (C).
MOVING THE LOWER PART
21
SEWINGMACHINEDIV.20 MODEL385.19001890
BEDCOVER
TO REMOVE:
1.
2.
3.
SERVICEACCESS
REMOVE THEWINDOW FRAME, AND THE BASE COVER.
REMOVE THE2 SCREWS (A), AND REMOVE THE BASE LID (1).
REMOBE THE2 SCREWS (B), AND REMOVE THE BED COVER (C).
TO ATTACH:
4, REVERSETHISPROCEDURE.
NOTE: MAKE SURETHE POSITION OF THE DROP LEVER(D) ISAS ILLUSTRATED.
BED COVER (C)
I II
J SCREW(A)
SCREW(B)
BASE LID (1)
DROP LEVER(D)
22
SDNINGMACHINEDIV.20 MODEL385.19001890
SERVICE ACCESS
BASEUNIT
TO REMOVE:
1. REMOVE THE BELTCOVER.
2. PULLTHECONNECTORS FOR THEX-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 THEABOVE PROCEDURE tN REVERSE.
CONNECTOR FOR X AXIS MOTOR (WHITE)
CO, NNECTOR FOR Y AXIS MOTOR (BLUE)
/
SCREWS (A)
BASE UNIT (B)
23
SEWING MACHINE DIV. 20 MODEL 385.19001890
SERVICEACCESS
FRONT COVER
TO REMOVE:
1. REMOVE THETOP COVER AND BELTCOVER UNIT.
2. REMOVE THESCREW(A) AND ARM THREAD GUIDE (LOWER) (F), LOOSEN THESCREWS
(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
SEWINGMACHINEDIV.20 MODEL385.19001890
MECHANICAL ADJUSTMENT
NEEDLEPOSITION
*WHEN THE STRAIGHT STITCH ISSELECTED, THE NEEDLE SHOULD BE AT THE CENTER OF
HOLE OF THE NEEDLE PLATE.
*WHEN THE ZIGZAG STITCHISSELECTEDWITH THEZIGZAG WIDTH SETTO THE MAXIMUM
(7.0), THE CLEARANCE BETWEENTHESIDE OF THENEEDLE AND THEEDGE OF HOLE OF
THE NEEDLE PLATEAT 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 THESETSCREW (A).
2. MOVE THEZIGZAG ROD (B) LEFTOR RIGHT TO SETTHE NEEDLE(C) ATTHECENTEROF THE
HOLE OF THE NEEDLE PLATE(D). THEN TIGHTENTHE SCREW (A),
TO CHECK:
1. SELECTTHE ZIGZAG STITCH(NO.5). SETTHEZIGZAG WIDTH TO THE MAXIMUM (7.0).
2. TURN THE HANDWHEEL TOWARD YOU AND CHECK IF THE CLEARANCE BETWEENTHE
SIDE OF THE NEEDLE AND THE EDGE OF HOLE OF THE NEEDLE PLATE, AT THE LEFTAND
RIGHT NEEDLE POSITION, IS0.2 MM OR MORE.
SETSCREW (A)
HOLE OF NEEDLE PLATE(D)
NEEDLE#14 (C)
ZIGZAG ROD (B) I1 i I
0.2 MM OR MORE_t_ i _1
A=B
_0.2 MM OR
MORE
25
SEWING MACHINE DIV. 20 MODEL 385.19001890
MECHANICAL ADJUSTMENT
NEEDLEBAR 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. INSERTTHERADIAL TIMING GAUGE #68497 (C) INTO THEHOOK.
3. AI-rACH THE NEEDLE BAR HEIGHTGAUGE#68168 (D).
*PUSH ITUP UNITL ITSTOPS.
4. TIGHTEN SCREW (E).
TO CHECK:
1. TURN THE POWER SWITCH ON.
2. TURNTHE HANDWHEEL TOWARD YOU UNTIL THE NEEDLE BAR (F) REACHES ITSLOWEST
POSITION.
*IFFINGER (G) COMES DOWN ON TOP OF PIN (H), OR IF PIN (I) TOUCHES THESURFACE
OF GAUGE (K) TOO FORCEFULLY,ADJUST AS DESCRIBED ON THE NEXTPAGE.
3. THE FACE OF FINGER (G) SHOULD HIT THE SIDE OF PIN (H) AND THE END OF PIN (I)
SHOULD TOUCH THESURFACE OF GAUGE (K) WHEN THE NEEDLE BAR (F) REACHES ITS
LOWEST POSITION.
26
SEWING MACHINE DIV. 20 MODEL 385.19001890
MECHANICAL ADJUSTMENT
NEEDLEBAR HEIGHT
ADJUSTMENT PROCEDURE:
1. OPENTHE FACE COVER.
2. LOOSEN THESCREW (M) ON THE NEEDLE BAR HOLDER (L).
3. MOVE THE NEEDLE BAR (F) UP OR DOWN TO ADJUST THEPOSITION OF THE NEEDLE BAR
(F) SO THATTHEFACE (G) HITSTHESIDE OF PIN (H) AND THEEND OF PIN (I) TOUCHES THE
SURFACE OF GAUGE (K).
4. TIGHTENTHE SCREW (M) SECURELY.
NEEDLE BAR (F)
/
NEEDLE BAR HOLDER J
SCR
J ACREW (E)
(G)
(K)_
AGUGE #68497 (C)
27
SEWING MACHINE DtV. 20 MODEL 385.19001890
MECHANICAL ADJUSTMENT
NEEDLETO SHUTrLETIMING
MACHINE SETTING:
I. PAI-rERN: NO.I (STRAIGHT STITCH)
2. TURN THE POWER SWITCH OFF.
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 UNTILITSTOPS.
4. TIGHTEN THE NEEDLE CLAMP SCREW (F).
TO CHECK:
1, TURNTHEPOWER SWITCH ON.
2, TURNTHE HANDWHEEL TOWARD YOU UNTIL THE TIP OF TESTPIN #68368 (D) SLIGHTLY
TOUCHES THE RADIAL TIMING GAUGE #68497 (C).
3. THETIPOF TESTPIN #68368 (D) SHOULD BE BETWEENTHETWO WHITE LINESOF 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)
NEEDLE
CLAMP
i SCREW (F)
BOBBIN HOLDER (B)
_J
TESTPIN #68368 (D)
GAUGE #68497 (C) NEEDLE
HOLDER (E)
28
SEWING MACHINE DIV. 20 MODEL 385.19001890
MECHANICAL ADJUSTMENT
NEEDLETO SHUITLETIMING
ADJUSTMENT PROCEDURE:
I. TURN THEPOWER SWITCH OFF.
2. REMOVE THEBELTCOVER (SEEP.20).
3. REMOVE THE4 SCREWS (G), THEN BASE LID 2 ( I ).
4. TURN THEPOWER SWITCH ON, AND SELECTPATTERNNO.1 (STRAIGHT STITCH).
5. LOOSEN THE 2 SCREWS IN THE LOWER SHAFTTIMING GEAR (J).
6. TURN THEHANDWHEEL TOWARD YOU UNTIL THE TESTPIN (D) SLIGHTLY TOUCHES THE
RADIAL TIMING GAUGE (C)..
7. HOLD THEHANDWHEEL SO THATTHETESTPIN (D) WILL NOT MOVE, AND TURN THESHUT[LE
HOOK (K) BY YOUR FINGER UNTIL THETESTPIN (D) COMES IN BETWEENTHETWO WHITE
LINESOF GAUGE #68497 (C).
8. TIGHTEN 2 SCREWS (H).
9. ATTACH THEBASE LID (2), BASECOVER, BED COVER, AND BELTCOVER.
HEXAGON SCREW (H)
\
BASE LID 2(I)
NEEDLE
LOWER SHAFT _ i CLAMP
TESTPIN (D) _ NEEDLEHOLDER (E)
• 1 ; _/SHUTTLE
(C_ _ HOOK (K)
SCREW
29
SEWING MACHINE DIV. 20 MODEL 385.19001890
MECHANICAL ADJUSTMENT
CLEARANCE BETWEENNEEDLEAND HOOK
*THECLEARANCE BETWEENTHE NEEDLE AND THE POINT OF HOOK SHOULD BE -0.1 TO
+0.05 MM.
PREPARATION:
1. REMOVE THENEEDLE PLATE,BOBBIN HOLDER, BASE COVER, BASE LID AND BED COVER
UNIT(SEE P.22), AND REPLACE THE NEEDLE WITH THETESTPIN (D) #68368.
2. TURNTHE POWER SWITCH ON, AND SELECT PATTERNNO. 5 (ZIGZAG STITCH).
ADJUSTMENT PROCEDURE:
1. LOOSEN THE SCREWS (A),(B),(C), THEN SLIGHTLYTIGHTEN THEHINGE SCREW(C).
2. TURNTHEHANDWHEEL TOWARD YOU, AND ADJUSTTHECLEARANCE BETWEENTHEMAS-
TERNEEDLE AND THE POINT OF THEHOOK IN THELEFTAND RIGHT NEEDLE POSITION TO
-0.1 TO +0.05mm BY MOVING THE HOOK SETPLATE(E) UP OR DOWN.
3. TIGHTEN THESCREWS(A),(B),(C).
4, CHECK THE BACKLASH OF THE HOOK DRIVE, GEAR AND LOWER SHAFT GEAR. IFTHE
BACKLASH ISTOO GREAT OR NOT ENOUGH, ADJUST THEBACKLASH IN ACCORDANCE
WITH 'TO ADJUST THE BACKLASH OF HOOK DRIVE GEAR AND LOWER SHAFTGEAR"
(SEEP.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)_ _
#68368 S
POINT OF HOOK
+0.05 to 43.I mm
HOOK SETPLATE(E)
3O
SEWING MACHINE DIV. 20 MODEL 385.19001890
MECHANICAL ADJUSTMENT
BACKLASH (LOWER SHAFTGEAR)
TO CHECK:
1. TURN THE POWER SWITCH OFF.
2. REMOVE THE NEEDLE PLATEAND BOBBIN HOLDER.
3. TURNTHE HANDWHEEL SLOWLYTOWARD YOU UNTILTHETIPOF THESHUTI'LEHOOK (A) IS
BETWEENBOTH ENDS (B) OF FEEDDOG.
4, ROTATETHEHOOK RACE CLOCKWISE AND COUNTERCLOCKWISE BY FINGER. CHECK
THEPLAY. iTSHOULD BEWITHIN 0.8 MM.
"IFTHEREISMORE THAN 0.8 MM BACKLASH BEIWEEN THEGEARS, ADJUST AS FOLLOWS.
ADJUSTMENT PROCEDURE:
1. REMOVE THE BEDCOVER (SEEP.22) AND LOOSEN THE SCREW (C).
2. TURNTHE LOWER SHAFT BUSHING (D) (ECCENTRIC), IN THE DIRECTION "E"WHEN THE
PLAY ATSHUTTLEHOOK TIP ISTOO SMALL.
3. TURNTHE LOWER SHAFT BUSHING (D) (ECCENTRIC), IN THE DIRECTION "F" WHEN THE
PLAY ATSHUTTLEHOOK TIP ISTOO LARGE,
4. TIGHTENSCREW (C) SECURELYAFTERADJUSTMENT.
F
--_v_, LOWER SHAFTBUSHING (D) I
(B)
TIPOF SHUTI-LE
HOOK (A)
CHECK THE
PLAY
•LOWER SHAFT GEAR
GROOVE OF LOWER SHAFT BUSHING (D)
F E
31
SEWINGMACHINEDIV.20 MODEL385.19001890
MECHANICAL ADJUSTMENT
FEEDDOG 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. PUTTHE FEEDDOG HEIGHT GAUGD_3496 (C) ON THENEEDLE 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
FEED DOG HEIGHT
CORRECT
LOW
HIGH
#68496 (C)
32
SEWING MACHINE DIV. 20 MODEL 385.19001890
MECHANICAL ADJUSTMENT
FEEDDOG HEIGHT
ADJUSTMENT PROCEDURE:
1. REMOVE THEBASE COVER, BASE LID AND BED COVER UNIT (SEE P.22).
2. TURN THE POWER SWITCH ON.
3. TURN THE BALANCE WHEEL TOWARD YOU AND SETTHEFEED DOG AT THEHIGHEST
POSITION.
4. LOOSEN THEADJUSTING SCREW (A) AND NUT (B).
5. TO ADJUST THE FEEDDOG HEIGHT,TURN THE ADJUSTING SCREW (C) IN THE DIRECTION
"D"OR "E".
6. FIRST,TIGHTEN THE NUT (B) AND THEN TIGHTEN THESCREW (A).
7. ATrACH THE BED COVER UNIT,BASE COVER, AND BASE LID.
SCREW (A)
NUT(B)
E (TO RAISE)
(TO LOWER)
ADJUSTING SCREW (C)
33
SEWING MACHINE DIV. 20 MODEL 385.19001890
MECHANICAL ADJUSTMENT
UPPERSHAFT SHIELD PLATEPOSITION
TO CHECK:
1. WHEN THEMACHINE ISSETFOR ZIGZAG STITCH, THE NEEDLE SHOULD STARTTO SWING
7.7 TO 8.7 MM ABOVE THESURFACE OF THENEEDLE PLATE.
ADJUSTMENT PROCEDURE:
1. REMOVE THE TOP COVER UNIT (SEE P.19). TURN ON THE POWER SWITCH. SELECTZIG-
ZAG STITCH NO. 5.
2. TURN THE HANDWHEEL TOWARD YOU SLOWLY, WITH YOUR HAND, UNITILTHE NEEDLE
STARTSTO SWING,
3. IF HIGHER THAN 8.7MM, LOOSEN THESCREW (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 PLATEAS CLOSE AS POSSIBLETO THE LEFT. (IT SHOULD
NOT TOUCH THE UPPER SHAFTSENSOR). THENTIGHTEN THESCREW.
6. TURN THEBALANCE WHEEL TOWARD YOU. CHECK THESTARTINGPOINT OF THENEEDLE
SWING. A1TACH THETOP COVER UNIT.
SURFACE OF NEEDLE PLATE
(#14)
7.7 MM - 8,7 MM
UPPERSHAFT SHIELD PLATE(D)
B
j SCREW (C)
UPPERSHAFTSENSOR
/
34
SEWINGMACHINEDIV.20 MODEL385."19001890
MECHANICAL ADJUSTMENT
SOLENOID
PREPARATION:
1. LOWER THE PRESSERBAR LIFTER.
ADJUSTMENTPROCEDURE:
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
TESTMODE 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.
SCREWS (A)
LCD SCREEN
SOLENOID TESTMODE START
GAUGE #U 1790
THREAD RELEASING ROD
_- SCREWS
",,,,,,TENSIONDISC _
HOLDER(_ SOLENOID (D)
THREAD TENSION DISC (C)
INSERTTHE GAUGE #U1790 (1.6 MM)
35
• J
SEWING MACHINE DIV. 20 MODEL 385.19001890
MECHANICAL ADJUSTMENT
TENSION RELEASEMECHANISM
TO CHECK:
I. WHEN THE PRESSER BAR ISRAISED,THE TENSION DISC HOLDER (D)SHOULD MOVE ABOUT
1.0MM AS A STANDARD VALUE IN ORDER FOR THE TENSION RELEASE FUNCTION TO
WORK CORRECTLY.
ADJUSTMENT PROCEDURE:
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)(SEEP.24).MOVE THE
FRONT COVER UNIT(E)A LITTLE.
3. LOWER THE PRESSER BAR LIFTERAND SETTHE THREAD TENSION DIAL AT "9".LOOSEN THE
SCREW (A).
4. SETTHE CLEARANCE BETWEEN THE THREAD TENSION RELEASING ROD (13)AND THE SPRING
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 SETAT "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
SEWING MACHINE DIV. 20 MODEL 385.19001890
MECHANICAL ADJUSTMENT
STRETCHSTITCHFEED BALANCE
TO CHECK:
1. WHEN A STRETCH PATTERNISSEWN WITH THE FEED BALANCING DIAL (C) SETAT THE
STANDARD SETTINGMARK " [_>", THE PATTERNSHOULD BEAS INDICATED WITHTHE "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 SELECTPATTERNNO,13 (TRIPLESTRETCHSTITCH).
2. SETTHE SLITOF THEFEED BALANCING DIAL (C) ATTHE STANDARD SETTINGMARK • [_"
ON THE BELTCOVER.
3. PUTTHEPAPER BETWEENTHEFOOT AND FEEDDOG AND LOWER THEPRESSERBAR LIFTER.
4. TURNTHE HANDWHEEL, AND CHECK THE NEEDLE POSITION OF "A" AND "B".
5. REMOVE THE BASE LID(D).
6, WHEN A>B, TURN THEADJUSTING SCREW (E) IN THEDIRECTION OF "A".
WHEN A<B, TURN THEADJUSTING SCREW (E) IN THEDIRECTION OF "B".
7. ATTACH THEBASE LID (D),
BASE LID (D)
/
AcDJUSTIN(
REW (E)
A B
(2) STANDARD
SETTING MARK FEEDBALANCING DIAL (C)
INDICATION LINE
© × ×
A=B A>8 A<B
37
SEWING MACHINE DIV. 20 MODEL 385.19001890
MECHANICAL ADJUSTMENT
HEIGHT OF EMBROIDERY PRESSERFOOT "P"
TO CHECK:
1. SETTHE NEEDLE BAR ATTHE LOWESTPOINT. LOWER THEPRESSERBAR WITH THEEMBROI-
DERYFOOT "P"ATTACHED. THEDISTANCE B_EEN THE BO1TOM PARTOF FOOT "P"AND
THESURFACE OF THENEEDLE PLATESHOULD BETHESAME AS THICKNESSOF THEGAUGE
#U1790.
ADJUSTMENT PROCEDURE:
1. REMOVE THE TOP COVER (SEEP.19).
2, SETTHENEEDLE BAR TO THE LOWEST POSITION. LOWER THE PRESSERFOOT LIFTER.THEN
SETTHE PRESSUREDIAL AT "2".
3. INSERTTHEGAUGE #U 1790 BETWEENTHEPRESSERFOOT "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 ITDOWN.
5. A1-FACHTHETOP COVER UNIT.
ACTUATOR ARM (C) PRESSTO THE CAM SURFACE
CAM
PUSHD(_
NEEDLE PLATE(A)
SCREW (B)
EMBROIDERY PRESSERFOOT "P"
GAUGE #U 1790(1.6 MM)
NEEDLE (LOWEST POSITION)
38
SEWING MACHINE DIV. 20 MODEL 385.19001890
MECHANICAL ADJUSTMENT
NEEDLETHREADTENSION
TO CHECK:
1. WHEN THE POLYESTERSEWING THREAD _ (WHITE) ISPASSED 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 THETHREAD TENSION DIAL SETAT "4".
ADJUSTMENT PROCEDURE:
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 INDIRECTION "A".
- WHEN THE TENSION ISWEAK, TURN THE LEAD SCREW INTHE DIRECTION "B".
3. ATTACH THE FRONT COVER UNIT.
ZL
/-
THREADTENSION DIAL AT "4"
FIG. 1
ADJUSTING PLATESPRING (C)
ADJUSTING PLATESPRING (C)
LEAD SCREW (D)
NEEDLE THREAD
P OLYESTERSEWING THREAD #50 (WHITE)
39
SEWtNG MACHINE DIV. 20 MODEL 385.19001890
MECHANICAL ADJUSTMENT
BUTTONHOLE LEVER
*IFTHE STEPSDO NOT CHANGE OR THE ENDS OF STITCHESARE NOT IN LINE WHILE BUT-
TONHOLE SEWING, ADJUST AS FOLLOWS:
1. ENTERADJUSTING MODE. TURN THE POWER SWITCH ON WHILE PRESSING THE START/
STOP KEYAND THE REVERSEKEY.PRESSTHELOCK STITCHKEY AND NEEDLE UP/DOWN
KEY WITHIN 2.5 SECONDS. THE LCD SCREEN SHOWS "BH SENSOR STATECLOSED".
2, LOOSEN THESCREW (A) AND MOVE THE BH LEVERGUIDE (B). THELCD SCREEN SHOULD
SHOW 'OPEN" WHEN THE BH LEVER ISLOWERED. THEN TIGHTEN THESCREW (A).
3, ATrACH THE BH FOOT "R"AND LOWER THE BH LEVER(C).
4. PUTGAUGE #U 1790 IN BEIWEEN THE SLIDING PART OF THE AUTOMATIC BUTPONHOLE
FOOT AND ITSEND, AS SHOWN.
5. LOOSEN SETSCREW (B), MOVE THESENSOR PLATE(E) FROM RIGHTTO LEFT,TIGHTENTHE
SETSCREW (D), AS THE LCD SCREEN CHANGES FROM (2) "OPEN" TO (3) "CLOSED'.
6. TURN ON THESWITCH AGAIN. SELECTBH #15 AND MAKE SUREITSEWSCORRECTLY.
NOTE: THE LCD SCREEN SHOWS (1) CLOSED (2) OPEN (3) CLOSED WHEN THE SENSOR
PLATEIS MOVED FROM RIGHT TO LEFTON STEP5. ADJUSTMENT SHOULD BESET
FROM (2) OPEN TO (3) CLOSED POSITION.
I CLOSED
(1)
LCD SCREEN
I BH SENSOR STATE 1
[CLOSED 1
LCD SCREEN
I+--[ OPEN] CLOSEDI
(2) (3)
LEFT RIGHT
(E)
BH LEVER (C)
BH LEVER GUIDE (B)
(D)
BH SENSOR
t
SCREW (A)
GAUGE #U 1790
(1.6 MM)
BH FOOT "R"
4O
SEWING MACHINE DIV. 20 MODEL 385.19001890
MECHANICAL ADJUSTMENT
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').
*IFTHE HEIGHT ISGREATER OR LESSTHAN 6 MM (0.24"), ADJUST AS FOLLOWS.
ADJUSTMENT PROCEDURE:
I. OPEN THE FACE COVER (C).
2. RAISETHE 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 SURETHATBOTH SIDESOF THEZIGZAG
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)
41
FEED DOG
6MM
SEWINGMACHINEDIV.20 MODEL385.19001890
MECHANICAL ADJUSTMENT
OVER LOAD (i)
* "STOPFOR SAFETYPURPOSES"APPEARS ON THESCREENWHEN THEMACHINE ISOVER-
LOADED
TO CHECK:
1, CHECK THETHREAD TAKE-UP LEVERAREA. IFTHREAD ISJAMMED, REMOVE THETHREAD
(SEE P.63). ALSO, CHECK "MOTOR BELTTENSION" (SEE P.57) AND "BACKLASH OF THE
SHUTi'LEHOOK" (SEE P.31),
2. TURNTHE HANDWHEEL TOWARD YOU TO CHECK THE TORQUE. IF IT ISHEAVY, ADJUST
THEFOLLOWING:
PREPARATION:
1. REMOVE THETOP COVER (SEEP.19), BELTCOVER (SEEP.20), BASE AND BED COVER
(SEEP.22).
2. TURNTHE HANDWHEEL TOWARD YOU UNTIL THE NEEDLE BAR COMES TO ITSHIGHEST
POSITION.
MARK BOTH THETIMING BELT(A) AND LOWER SHAFTGEAR (B) WITH A FELT-TIPPEN, AS
ILLUSTRATED.
3. REMOVE THEMOTOR BELTAND THETIMING BELT(A),
ADJUSTMENTPROCEDURE:
UPPERSHAFT
I. LOOSEN THE SCREW (C).
2. SLIDETHE UPPER SHAFT RING (D) TO THELEFTSO THERE IS NO PLAY AND THE SHAFT
TURNSSMOOTHLY.
3. TIGHTENTHESCREW (C) AND MAKE SURETHEUPPERSHAFT(E) HAS NO PLAY AND TURNS
SMOOTHLY BY TURNING THEHANDWHEEL.
SCREW (C)
THREAD TAKE-UP LEVER
UPPERSHAFT(E)
RING (D)
MOTOR BELT
TIMING BELT(A)
LOWER SHAFT
GEAR (B)
42
MARKING
SEWING MACHINE DIV. 20 MODEL 385.19001890
MECHANICAL ADJUSTMENT
OVER LOAD (2)
ADJUSTMENT PROCEDURE:
LOWER SHAFT
I. LOOSEN THE2 SCREWS (A).
2. SLIDE THE LOWER SHAFT RING (B) TO THE LEFTSO THEREIS NO PLAY AND THE SHAFT
TURNS SMOOTHLY.
3. TIGHTEN THE 2 SCREWS (A). MAKE SURE THE LOWER SHAFT (C) HAS NO PLAY AND
TURNSSMOOTHLY BYTURNING THE LOWER SHAFTTIMING GEAR (D).
HOW TO INSTALLTHETIMING BELT:
1, TURN THE HANDWHEEL TOWARD YOU UNTIL THE NEEDLE BAR COMES TO ITSHIGHEST
POSITION.
TURNTHELOWER SHAFTTIMING GEAR (D) TOWARD YOU UNTILTHEFEEDDOG (E) COMES
JUSTABOVE THENEEDLE PLATE(F) IN ITSUPWARD MOTION.
THEN, ATTACH THETIMING BELT(G).
* MAKE SURETHEMARKING ON THETIMING BELT(G) ISIN LINE WITHTHATOF THE LOWER
SHAFTTIMING GEAR (D).
2. CHECK THE "NEEDLE TO SHU_LE TIMING" (SEEP.28, 29)
3, AYrACH THE MOTOR BELT(H), BED COVER, BASE,BELTCOVER AND TOP COVER.
LOWER SHAFTRING (B)
Z
LOWER SHAFTTIMING GEAR (D)
FEED DOG (E) "_
NEEDLE _ SCREW (A)
PLATE(F) _
TIMING BELT(G)
MOTOR BELT(H)
LOWER SHAFT(C)
MARKING
43
SEWING MACHINE DIV. 20 MODEL 385.19001890
ADJUSTMENTOF TOUCH PANEL
TO CHECK:
1, IF,WHEN PRESSING THE TOUCH PANEL, A DIFFERENTSTITCH ISSELECTED. ADJUST AS
FOLLOWS.
ADJUSTMENT PROCEDURE:
1. TURN THE POWER SWITCH ON WHILE PRESSINGTHE UP/DOWN BUTTON, REVERSEBUT-
TON, AND START/STOPBUTTON SIMULTANEOUSLY. ("PRESS+ MARK" AND "+" MARK ARE
INDICATED ON THE LCD ATTHISTIME.)
2. PRESSTHE CENTER OF THE "+" MARK WITH THE POINT OF THE ADDITIONAL SPOOL PIN.
(WHEN PRESSINGTHE "+" MARK ONCE, THE BUZZERSOUNDS. THE "+" MARK MOVES AS
SHOWN IN THE FIGURE BELOW EVERYTIME IT ISPUSHED.)
3. WHEN THE FIFTH"+" MARK ISPRESSED,"ADJUSTMENT END" ISINDICATED ON THE LCD,
4. TURNTHE POWER SWITCH OFF.
5. TURNTHE POWER SWITCH ON, AND CHECK IF THEORIGINAL FIRSTPAGE APPEARS ON
THE LCD.
NOTE: AFTERADJUSTMENT, CHECK TO SEEIF PAl-FERNSARE SELECTEDCORRECTLY,
_ _DITIONAL SPOOL PIN
BUIrON ""_x J
REVERSEBU ON
START/STOPBUT[ON f.._,
FIRST INDICATION ON LCD
\
1
WHEN SWITCH ISTURNED ON
Press .-._..-.MARKi
$
Press _ KEY
i
MIoI"E"u/
4
/
+
÷
Adjustment END
LASTINDICATION ON LCD
3 (PRESSCENTER)
44
SEWING MACHINE DIV. 20 MODEL 385.19001890
MECHANICAL ADJUSTMENT
BOBBIN THREADTENSION (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 THETENSION METER.
2. PULL ITIN THE DIRECTION OF THEARROW AT A SPEEDOF 50 MM/SECOND.
- IFTHE TENSION ISTOO STRONG, TURNTHESCREW COUNTERCLOCKWISE,
- IFTHE TENSION ISTOO WEAK, TURNTHE SCREW CLOCKWISE.
THREAD PULLING SPEED...50 MM/SECOND
THREAD PULLING DERECTION
1-2MM 1
SCREW
45
SEWINGMACHINEDIV.20 MODEL385,19001890
BOBBIN THREAD TENSION (2)
IF A TENSION METERISNOT AVAILABLE,THEBOBBIN THREAD TENSION CAN BEADJUSTEDAS
FOLLOWS:
1. INSERTA BOBBIN WOUND WITH KENMORE EMBROIDERY THRAD (#204 YELLOW)(B) INTO
THEBOBBIN HOLDER. THREAD THE BOBBIN HOLDER AND HANG ZIGZAG FOOT "A" AND
OVEREDGE FOOT "C" ON THE END OF THE BOBBIN THREAD AS ILLUSTRATED.
2, TURNTHEADJUSTING 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 OBTAINTHECORRECT TENSIONBALANCE BYOTHER
MEANS. REPLACE THE BOBBIN HOLDER IF THE CORRECT TENSION CAN NOT BE
OBTAINED BYTHISPROCEDURE.
ADJUSI_ING SCREW (D)
KENMORE EMBROIDERY
THREAD (YELLOW) (B)
ZIGZAG FOOT "A"
BOBBIN HOLDER (E)
.__/OVEREDGE FOOT "C"
46
SEWING MACHINE DIV. 20 MODEL 385.19001890
PARTREMOVALAND REPLACEMENT
NEEDLETHREAD TENSION UNIT
TO REMOVE:
1. REMOVE THE FRONT COVER UNIT (SEEP.24).
2. REMOVE SCREWS (A) AND (B) AND THE NEEDLE THREAD TENSION UNIT (C).
TO ATTACH:
1. REVERSETHISPROCEDURE.
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)
SCREW (B)
47
SEWING MACHINE DIV. 20 MODEL 385.19001890
PARTREMOVALAND REPLACEMENT
FEED DOG
TO REMOVE:
1. REMOVE THE NEEDLE PLATE(A) BY REMOVING SCREW(B).
2. REMOVE THE FEEDDOG (C) BY REMOVING THE2 SCREWS (D).
TO ATrACH:
I. SETTHE FEED DOG BY LIGHTLYTIGHTENING THE 2 SCREWS (D).
2. SETTHE NEEDLE PLATE (A)WITH SCREW (B),CHECK THE LATERAL CLEARANCE BETWEEN
THE SLOTS FOR THE FEED DOG (C) INTHE 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).
2 SCREWS (D) FEED DOG (C)
NEEDLE PLATE(A)
I
I
I
SCREW (B)
FEED DOG (C)
J
- FRONT BACK CLEARANCE
- LATERAL CLEARANCE
48
SEWING MACHIN EDIV. 20 MODEL 385.19001890
PARTREMOVALAND REPLACEMENT
THREADERPLATE
*WHEN THEHOOK (A) OF THETHREADER PLATE(8) ISDAMAGED, CHANGE OR ADJUST
THE PARTAS FOLLOWS:
TO CHANGE THETHREADERPLATE:
1. RAISETHENEEDLETO ITSHIGHEST POSITION AND LOWER THETHREADERKNOB (C) TO ITS
LOWEST POSITION.
2, LOOSEN THE SCREW (D) AND REMOVE THETHREADER PLATE(B) (FIG.l).
TO CHANGE THE NEEDLETHREADER:
1. IFTHE HOOK OF THETHREADER PLATETOUCHES THE LEFTOR RIGHT SIDE, LOOSEN THE
SCREW AND ADJUST THEHOOK POSITION (FIG.2).
2. IFTHEHOOK OF THETHREADERPLATETOUCHESTHETOP OR BOTTOM SIDEOF THENEEDLE
HOLE, LOOSEN THESCREW AND ADJUST THE HOOK POSITION (FIG.3).
THREADER
KNOB (C)
TO CHANGE THE THREADERPLATE
(FIG. l).
THREADER PLATE(B)
SCREW (D)
HOOK(_
ADJUSTTHEDIRECTION OF LEFTOR RIGHT
(FIG.3)
ADJUST THE DIRECTION OF LEFTOR RIGHT
(FIG.2)
POSITION SETTING
PLATE
THREADER PLATE
49
SI=nA/ING MACHINE DIV. 20 MODEL 385.19001890
C-BOARD UNIT
TO REMOVE:
I.
2.
3.
PARTREMOVALAND REPLACEMENT
REMOVE THE BASE UNIT (A) AND SLIDE THE BASE (SEEP.23).
LOOSEN THE3 SCREWS (B).
UNPLUG THE4 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 PULLOUT
THEC-BOARD (F).
2. REPLACE THE FUSEIN THE FUSEHOLDER (G) ON C-BOARD.
• IFFUSEF1 (125V-2.5A) ISBLOWN ........... TRANSFORMER OR C-BOARD ISDAMAGED.
• IFFUSEF2 (250V-3.15A) ISBLOWN ......... TOO MUCH POWER IS ON THE DC MOTOR
WHEN THE UPPER SHAFT, LOWER SHAFT OR
SHUI-rLERACE 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
SEWING MACHINE DIV. 20 MODEL 385.19001890
PARTREMOVALAND REPLACEMENT
TRANSFORMER
TO REMOVE:
1. REMOVE THE FRONT COVER UNIT (SEE P.24).
2. REMOVE THE2 CONNECTORS (RED, WHITE) OF THETRANSFORMER (A) FROM C-BOARD
CASE UNIT.
3. REMOVE THE2 SCREWS (B) AND PULLOUT THETRANSFORMER (A), THENCHANGE THE
TRANSFORMER.
TO ATTACH:
I. REVERSE THISPROCEDURE.
CONNECTOR (RED)
\
\
\
\
\
\
\
-,_1/2 SCREWS (B)
[A)
C-BOARD CASE
CONNECTOR (WHITE)
51
SEWING MACHINE DIV. 20 MODEL 385.19001890
PARTREMOVALAND REPLACEMENT
MACHINE SOCKETUNIT
TO REMOVE:
1. REMOVE THE BELTCOVER (SEEP.20) AND FRONT COVER UNIT (SEE P.24).
2. PULLOUT 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. REVERSETHISPROCEDURE.
*CORDS RUN AS ILLUSTRATED.
MACHINE SOCKET CONNECTOR
(SECONDARY)
CORD (SECONDARY)
MACHINE SOCKET CONNECTOR
(PRIMARY)
SCREW (B)
\
MACHINE SOCKET UNIT (C)
CORD (PRIMARY)
C-BOARD CASE UNIT(A)
52
SEWING MACHINE DIV. 20 MODEL 385.19001890
PARTREMOVAL AND REPLACEMENT
A-BOARD UNIT
TO REMOVE:
1. REMOV!e THE FRONT COVER UNIT (SEEP.24).
2. PULL OUTTHE LCD FLATCABLE (A) BY LIFTINGTHE CONNECTOR CLAMP, PULLOUT 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 THEHOOK (F) AND CARD GUIDE (D) (SEETHE DRAWING).
TO ATTACH:
1. ATrACH CARD GUIDE (D) TO A-BOARD BY FITTINGTHEPROJECTION OF THECARD GUIDE
(D) INTO THEROUND HOLE OF THECARD CONNECTOR (G). PRESSTHE UNIT UNTIL ITIS
HOOKED.
2. ATTACH A-BORD WITH 7 SCREWS. INSERTTHE FLAT CABLE (A) TO THE CONNECTOR,
THEN PUSH DOWN THECLAMP. (MAKE SURETHE 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 THECONNECTING PART OF THE FLATCABLE (A) WITH YOUR
FINGER,
IA FLATCABLE (A) SCREW --_ _ TOUCH PANEL CONNECTOR (B)
i
-8OARD E) -::
SCREW _
/ GUIDE (b)_ J_" _'7_,_ ". "=_,[ /_ SCREW BOSS /
__" kL_< .-"
i BUrtON(H) 7 :: ,- i |
| SCREW ""_oJ /
J
53
SEWINGMACHINEDIV.20 MODEL385.19001890
LCD UNIT
TO REMOVE:
I.
2.
3.
PARTREMOVALAND REPLACEMENT
REMOVE THE FRONT COVER (SEEP.24) AND A-BOARD (SEE P.53).
REMOVE 2 SCREWS (A). LOOSEN 2 SCREWS (B) AND REMOVE THELCD FRAME UNIT (D).
REMOVE 2 SCREWS (C). THEN REMOVE THESETTING PLATE(E).
TO ATTACH:
I. REVERSE THISPROCEDURE.
NOTE: DO THE ADJUSTMENT OF "TOUCH PANEL* WHEN LCD FRAME UNIT (D) IS RE-
PLACED.
SCREWS (B)
UNIT(D)
SETTING PLATE(E)
SCREWS (A)
SCREWS (C)
54
SEWINGMACHINEDIV.20 MODEL385.19001890
PARTREMOVALAND REPLACEMENT
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. REVERSE THISPROCEDURE.
A-BOARD (B)
F-BOARD CONNECTOR (A)
SCREWS (C)
l
F-BOARD (D)
55
SEWING MACHINE DIV. 20 MODEL 385.19001890
PARTREMOVALAND REPLACEMENT
SLIDEVOLUME UNIT
TO REMOVE:
1. REMOVE THE FRONT COVER (SEE P.24) AND A-BOARD (SEEP.53).
2. REMOVE THE SNAP RINGS CS-3 (A), AND CHANGE SLIDE VOLUME.
TO ATTACH:
3. REVERSETHISPROCEDURE.
* INSERTTHESLIDE TAB INTITHE LOWER HOLE OF THESLIDE KNOB.
BOTTOM OF SLIDE KNOB
AS VIEWED FROM THE UNDERSIDE OF KNOB
SLIDEVOLUME
\
SNAP RING (A)
56
SEWINGMACHINEDIV.20 MODEL385.19001890
PARTREMOVALAND REPLACEMENT
DC MOTOR UNIT AND BELTTENSION
TO REMOVE:
1. REMOVE THEBELTCOVER (SEEP.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. PASSTHEMOTOR CORD UNDER THEARM RIB,THENATrACH THEMOTOR WITH 2 SCREWS
(A) TEMPORARILY AS SHOWN BELOW.
2. TIGHTEN MOTOR FIXING SCREWS (A) FIRMLY WHEN THE MOTOR BELTTENSION ISCOR-
RECTAS SHOWN BELOW.
3. INSERTTHE CONNECTOR TO THEA-BOARD.
4. ATTACH THE BELTCOVER. THEMOTOR CORD SHOULD BESETON THE LEFTSIDE OF THE
BELTCOVER BOSS (B).
V1OTORCONNECTOR
(WHITE COLOR)
\
"_ PRESSURE200 g
BENDING AMOUNT
ABOUT 5 MM
DC MOTOR (B)
\
BELTCOVER BOSS (B)
", MOTOR BELT
PASSTHE CONNECTOR UNDER THE ARM RIB "'_\
MOTOR FIXING SCREWS (A) "
57
SEWING MACHINE DIM 20 MODEL 385.19001890
PARTREMOVALAND REPLACEMENT
CARRIAGE PLATECOVER UNIT
TO REMOVE:
1. REMOVE THE CARRIAGE COVER CAP (A). (PULL THECARRIAGE AWAY FROM THE MA-
CHINE A LIT[LEAND PRYOFF THE COVER CAP WITH A SCREWDRIVER, AS SHOWN BE-
LOW.)
2. LOOSEN THE 3 SCREWS (B), AND REMOVE THE CARRIAGE PLATECOVER (C),
TO ATTACH:
1. DROP THE FEED DOG. (MOVE THE DROP FEED KNOB (D) IN THE DIRECTION OF THE
ARROW.)
2. LIGHTLYTIGHTEN THECARRIAGE PLATECOVER (C) WITH THREESCREWS (B).
3. AI-I'ACH THEEMBROIDERY HOOP. ADJUST THE CARRIAGE PLATECOVER UNIT (C).
*ADJUST THECLEARANCE BETWEENTHEBoYroM SIDEOF THEEMBROIDERY HOOP AND
THE SURFACE OF THE NEEDLE PLATE (F) AT 0.5 MM AND PARALLEL. (PUT TWO POST-
CARDS (G) BETWEENEMBROIDERY HOOP AND NEEDLE PLATEWHEN ADJUSTING AND
HOLD THEEMBROIDERY HOOP.)
*PUTGAUGE _J1790 BETWEENTHEMACHINE BODY AND CARRIAGE PLATECOVER (C).
4. TIGHTEN THE3 SCREWS (B), THENSETTHE 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)
INSERTTHEGAUGE #U1790 (1.6 MM)
58
SEWING MACHINE DIV. 20 MODEL 385.19001890
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). PULLTHESENSORFORWARD SO
THATITTOUCHES THE SETTING PLATE.
*MAKE SUREITDOESN'T TOUCH THE BUTTONHOLE SHIELD PLATE.(SEEILLUSTRATION,)
2. PASSTHE CORD, AND ATTACH THE FRONT COVER AS ILLUSTRATED.
*AFTER REPLACING THE BUTTONHOLE SENSOR, SEWA FEWBUTTONHOLES.
IFSOMETHING ISABNORMAL, ADJUST THE "BUI"fONHOLE LEVER"(SEEP.40).
BUTTONHOLE SENSORCORD
- J SCREW (A)
BUTTONHOLE
SENSOR (B)
SEllING PLATE(C)
BUTTONHOLE SHIELDPLATE(D)
_NOT ToBUTTONHOLESENSOR (B)
BUTTONHOLE SHIELD
PLATE(D)
UCHING
59
SEWING MACHINE DIV. 20 MODEL 385.19001890
PARTREMOVALAND REPLACEMENT
UPPERSHAFTSENSOR
TO REMOVE:
1. REMOVE THE FRONT COVER (SEEP.24).
2. PUSH THE HOLDERS (A) AND REMOVE THEUPPERSHAFT SENSOR UNIT (B).
TO ATTACH:
1. ATTACH THE NEW UPPER SHAFTSENSOR UNIT INTO THESETTING PLATE.
*AFTER REPLACING THE UPPER SHAFTSENSOR UNIT,MAKE SUREIT DOESN'T TOUCH THE
UPPRESHAFT SHIELD PLATE(C).
2. ATTACH THE FRONT COVER.
UPPERSHAFTSHIELDPLATE(C)
UPPERSHAFT
HOLDER (A)
(A)
UPPERSHAFTSENSOR UNIT (B)
6O
SEWING MACHINE DIV. 20 MODEL 385.19001890
PARTREMOVAL AND REPLACEMENT
ZIGZAG STEPPING MOTOR
TO REMOVE:
1. REMOVE THE FRONT COVER (SEEP.24).
2. REMOVE THE E-RING (B), AND 2 SCREWS.
3. REMOVE THEMOTOR (C).
TO ATTACH:
1. MAKE SURETHE SMALL NOTCH MARK (F) ISIN LINEWITH THECENTER OF CONNECTING
ARM (D) THEN ATTACH THEZIGZAG ROD (E) BYTIGHTNING THE 2 SCREWS (A).
2. ATTACH THE E-RING (B).
3, ATTACH THEFORNT COVER.
*AFTER ATTACHING THE MOTOR, ADJUST THE "NEEDLEPOSITION" (SEEPAGE 25).
E-RING (B)
ZIGZAG STEPPING MOTOR (C)
61
SEVVING MACHINE DIV. 20 MODEL 385.19001890
PARTREMOVALAND REPLACEMENT
FEEDSTEPPING MOTOR
TO REMOVE:
1. REMOVE THE FRONT COVER (SEE P.24), AND BASE UNIT (SEEP.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 SURETHELARGE NOTCH MARK (G) ISIN LINE WITHTHECENTER OF THE PINSIN THE
CONNECTING ARM (E), THEN SLIDE THE FEED ROD (D) ONTO THE FEEDARM PIN (F).
AND THENATTACHTHEFEEDSTEPPINGMOTOR BYTIGHTNING THE2 SCREWS(A). (TIGHTEN
THE2 SCREWS ATTHE SPOTTHAT WHERE THE FEEDARM MOVES SMOOTHLY.)
2. AI-rACH THE E-RING (B).
3. AI-rACH THE BASEAND FRONT COVER.
*AFTERATTACHING THEMOTOR, ADJUSTTHE "STRETCHSTITCHFEEDBALANCE" (SEEP.37),
2 SCREWS (A)
CONNECTING ARM (E)
FEED ROD (D)
FEED STEPPING MOTOR (C)
FEED GEAR _p__ _
E-RING (B)
LARGE NOTCH MARK (G)
/
FEEDARM
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 PLATEAND LOOSEN THE SCREW (A) BY TURNING IN DIRECTION C
(CLOClGNtSE).
2. REMOVE THE JAMMED THREADS WITH THE TWEEZERS.
3. TIGHTEN SCREW (A) BYTURNING IN DIRECTION OF B(COUNTERCLOCKWISE).
NOTE: SCREW (A) ISA LEFT-HANDED SCREW.
(
SCREW (A)
C
_I"WEEZERS(D)
63
SEWING MACHINE DIV. 20 MODEL 385.19001890
CHECKING ELECTRONIC PARTS
I.MACHINE SOCKET
PRIMARY (POWER CORD, POWER SWITCH)
*WITH THEPOWER CORD CONNECTED AND THE POWER SWITCH TURNED ON, YOU
SHOULD SEEAPPROXIMATELY 120 VOLTSAC (WITH A VOLT METER)ON THE PRIMARY
CONNECTOR (N) (SEMI-OPAQUE).
,IN THIS CONDITION, WHEN THE POWER SWITCH ISTURNED OFF, MAKE SURE THE
POWER ACTUALLY GOES OFF (I.E. THATTHESWITCH WORKS).
\
(N)
SECONDARY (FOOT CONTROL)
*CONNECT A GOOD WORKING FOOT CONTROL AND CHECK THE RESISTANCEOF
THE SECONDARY CONNECTOR (B) (WHITE) WITH THE FOOT CONTROL IN THE UP
POSITION. ABOUT ZERO OHMS ISNORMAL.
.WHEN THE CONTROL IS PRESSEDALL THE WAY DOWN, THEMULTI-METER SHOULD
SHOW ABOUT 10 KILO-OHMS (AFTERA FEWSECONDS).
(B)
64
SEWING MACHINE DIV. 20 MODEL 385.19001890
CHECKING ELECTRONICPARTS
2. C-BOARD
CONNECT THE TRANSFORMER TO C-BOARD AND TURNTHE POWER SWITCH ON.
THE MULTI-METER SHOULD SHOW 35-42 VOLTS DC AT THE SECONDARY CONNECTOR
(M) (CNCA:BLUE).
C) 2
[ WIRING DIAGRAM ]
FI
CNCR 2.5A
Z_
CNCT I
CNCT2
F2
3.0A
J 2 IDBI
CNC¢_
,_. t'
65
SEWING MACHINE DIV. 20 MODEL 385.19001890
CHECKING ELECTRONICPARTS
3.F'BOARD (CONNECTOR (I)CNFA)
*WHEN THE START/STOP BUTTON ISPRESSED, PIN I ISSHORTED TO PIN5.
*WHEN THE REVERSE BUTrON ISPRESSED, PIN2 ISSHORTED TO PIN 5,
.WHEN THE AUTO LOCK BUTTON ISPRESSED, PIN 3 ISSHORTED TO PiN5.
.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 4 (WHITE)
PIN 5 (WHITE)
66
SEWINGMACHINEDIV.20 MODEL385.19001890
CHECKING FLECTRONICPARTS
4. DC MOTOR (CONNECTOR (C) CNMA)
*RESISTANCEBETWEENPIN 4 AND PIN 5 SHOULD BEOVER 1.7 OHMS. (MAKE SURETHE
CORD ISNOT CUT.)
\
(c)
PIN 5 (BLACK)
PIN 4 (RED)
5. FOOT CONTROL
*RESISTANCE BETWEEN THETIP AND THESLEEVEOF THE JACK SHOULD BE APPROXI-
MATELY 0 OHMS. WHEN THE CONTROL ISPRESSEDALL THE WAY DOWN, THEMULTI-
METERSHOULD SHOW ABOUT 10 KILO-OHMS (AFTERA FEW SECONDS).
67
SEWING MACHINE DIV. 20 MODEL 385,19001890
CHECK ELECTRONIC PARTS
6. STEPPINGMOTORS
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 BEAPPROXIMATELY 12 OHMS.
(E)
PIN 5 (YELLOW)
PIN 4 (WHITE) ._
PIN 6 (BROWN)
PIN 4 (WHITE) ,_
PIN 9 (BLACK)
PIN 8 (BLUE)
PIN 9 (BLACK)
PIN 7 (RED)
X-AXIS (F) AND Y-AXIS (G) STEPPING MOTORS:
• RESISTANCEBETWEENABOVE 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
SEWING MACHINE DIV. 20 MODEL 385.19001890
CARE
(2)
_-,, , (3) _. /
(3) (4)
• CLEANING THEBOBBIN HOLDER
LOOSE THREADS AND DUST MAY CAUSE PUCKERED
STITCHESAND THREADBREAKAGE DURING STITCHING.
CHECK FOR LINTBUILD-UP AFTEREACH GARMENT IS
COMPLETED.
TURN OFF THE POWER SWITCH OR UNPLUG THE
MACHINE.
1. REMOVE THE COVER PLATEBY SLIDING THE HOOK
COVER PLATERELEASEBUI-rON TO THE RIGHT,
2. REMOVE THE BOBBIN TO BRUSH OUT DUST AND
LINT.(YOU MAY ALSO USE A SMALL VACUUM
CLEANER.)
3, INSERTTHEBOBBIN AND AFfACH THE HOOK COVER
PLATE.
• EXPOSING THE HOOK RACE
1. UNPLUG THEMACHINE AND REMOVE THE PRESSER
FOOT AND NEEDLE.
2. REMOVE THE SCREW ON THE LEFTSIDE OF THE
NEEDLE PLATEWITH THE SCREWDRIVER SUPPLIED
WITH THEMACHINE.
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 WITHTHELINTBRUSHAND A SOFTDRYCLOTH.
• REPLACING THE BOBBIN HOLDER
INSERTTHE BOBBIN HOLDER SO THAT THE KNOB FITS
NEXTTO THESTOPPER IN THEHOOK 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 THESCREW.
(3) NEEDLE PLATEGUIDE PINS
(4) GUIDE HOLES
69
SEWING MACHINE DIV. 20 MODEL 385.19001890
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 LETTHEOIL WORK INTO THE BUSH-
INGS. MOVE THE CARRIAGE BY HAND TO SPREAD OIL OVER THEGUIDE BARS.
NOTE: MAKE SURE TO AVOID STAINING THE UPPER SHAFT SHIELD PLATEOR CIRCUIT
BOARDS WITH OIL WHEN SPPLYING OIL TO POINTS (A) AND (B) BELOW.
7O
SEWING MACHINE DIV. 20 MODEL 385.19001890
SPECIAL TOOLS REQUIRED
_DRIVER
THICKNESS GAUGE #LI1790
*SOLENOID:
*HEIGHT OF EMBROIDERY
PRESSERFOOT P:
*BUTrONHOLE LEVER
*CARRIAGE PLATECOVER:
P.35
P.38
P,40
E58
PHILLIPSSCREW DRIVER
ALLEN SCREW DRIVER
__ [ SIZE:DLR4 ]
NCH
FEED DOG HEIGHT GAUGE #68499
(*FEED DOG HEIGHT: P.32-33
NEEDLE HEIGHT GAUGE _58168
(*NEEDLE BAR HEIGHT:
7
P.26-27 )
TESTPIN #68368
*NEEDLE TO SHUYrLETIMING: P.28-29"
*CLEARANCE BETWEENNEEDLE
AND HOOK: P.30
(*NEEDLE TO SHUTTLETIMING: P,28-29 )
RADIAL TIMING
GAUGE SHEET
#U1369C
71
