JUKI LK-1900B/IP-420 User manual

* "CompactFlash(TM)" is the registered trademark of SanDisk Corporation, U.S.A.
ENGLISH
INSTRUCTION MANUAL
LK-1900B / IP-420

i
CONTENTS
1. NAME OF EACH SECTION OF THE OPERATION PANEL............................................1
1-1 Body......................................................................................................................................................1
1-2 Buttons to be used in common ..........................................................................................................3
2. BASIC OPERATION OF IP-420.......................................................................................4
3. LCD DISPLAY SECTION AT THE TIME OF SEWING SHAPE SELECTION .................5
3-1 Sewing shape data input screen ........................................................................................................5
3-2 Sewing screen......................................................................................................................................8
4. PERFORMING SEWING SHAPE SELECTION............................................................. 11
5. SEWING SHAPE LIST...................................................................................................14
5-1 LK-1900B / LK-1901B / LK-1902B .....................................................................................................14
5-2 LK-1903B ............................................................................................................................................16
7. CHECKING PATTERN SHAPE .....................................................................................19
8. CHANGING THREAD TENSION COMMAND AT EVERY NEEDLE ENTRY POINT....21
8-1 Adding or changing thread tension command at every needle entry point.................................21
8-2 Deleting thread tension command at every needle entry point ....................................................23
9. PERFORMING RELEASE OF GREASE-UP ERROR...................................................25
10. USING TEMPORARY STOP........................................................................................26
10-1 To continue performing sewing from some point in sewing .......................................................27
10-2 To perform re-sewing from the start ..............................................................................................28
11. WINDING BOBBIN THREAD.......................................................................................29
12. USING COUNTER .......................................................................................................30
12-1 Setting procedure of the counter ...................................................................................................30
12-2 Count-up releasing procedure........................................................................................................33
12-3 How to change the counter value during sewing .........................................................................33
13. PERFORMING NEW REGISTER OF USERS' PATTERN...........................................34
14. PERFORMING NEW REGISTER OF PATTERN BUTTON.........................................35
15. LCD DISPLAY SECTION AT THE TIME OF PATTERN BUTTON SELECTION.........36
15-1 Pattern button data input screen....................................................................................................36
15-2 Sewing screen..................................................................................................................................39
16. PERFORMING PATTERN BUTTON No. SELECTION ...............................................42
16-1 Selection from the data input screen.............................................................................................42
16-2 Selection by means of the shortcut button...................................................................................43
17. CHANGING CONTENTS OF PATTERN BUTTON......................................................44
18. NAMING PATTERN .....................................................................................................46
19. COPYING PATTERN BUTTON....................................................................................47
20. CHANGING SEWING MODE.......................................................................................49
21. LCD DISPLAY SECTION AT THE TIME OF COMBINATION SEWING......................50

ii
21-1 Pattern input screen ........................................................................................................................50
21-2 Sewing screen..................................................................................................................................52
22. PERFORMING COMBINATION SEWING ...................................................................55
22-1 How to create combination data.....................................................................................................55
22-2 Selection of combination data........................................................................................................56
22-3 How to delete combination data.....................................................................................................57
22-4 How to delete combination data step ............................................................................................58
23. CHANGING MEMORY SWITCH DATA .......................................................................59
23-1 How to change memory switch data..............................................................................................59
23-1-1 Level 1.........................................................................................................................................................59
23-1-2 Level 2.........................................................................................................................................................61
23-2 Memory switch data list ..................................................................................................................62
23-2-1 Level 1.........................................................................................................................................................62
23-2-2 Level 2.........................................................................................................................................................68
24. ERROR CODE LIST ....................................................................................................73
25. MESSAGE LIST...........................................................................................................81
26. USING COMMUNICATION FUNCTION ......................................................................84
26-1 Handling possible data....................................................................................................................84
26-2 Performing communication by using the media...........................................................................85
26-3 Performing format............................................................................................................................88
26-4 Performing communication ............................................................................................................89
26-5 Take-in of the data ...........................................................................................................................90
26-6 Taking in plural data together.........................................................................................................92
27. INFORMATION FUNCTION.........................................................................................94
27-1 Observing the maintenance inspection information....................................................................94
27-2 Inputting the inspection time..........................................................................................................96
27-3 Releasing procedure of the warning..............................................................................................97
27-4 Observing the production control information.............................................................................98
27-4-1 When displaying from the information screen........................................................................................98
27-4-2 When displaying from the sewing screen .............................................................................................100
27-5 Performing setting of the production control information ........................................................101
27-6 Observing the working measurement information.....................................................................105
28. TRIAL SEWING FUNCTION......................................................................................109
28-1 Performing trial sewing.................................................................................................................109
29. THREAD TENSION VALUE DISPLAY COLOR LIST................................................ 112
30. SETTING APPROVAL/DISAPPROVAL OF CALLING OF PATTERN DATA............ 113
31. PERFORMING ADJUSTMENT OF ORIGIN OF PRESSER...................................... 114
32. PERFORMING KEY LOCK........................................................................................115
33. DISPLAYING VERSION INFORMATION................................................................... 117
34. USING CHECK PROGRAM.......................................................................................118
34-1 To display the check program screen..........................................................................................118

iii
34-2 Performing compensation of touch panel...................................................................................120
34-3 Performing LCD check ..................................................................................................................123
34-4 Performing sensor check..............................................................................................................124
34-5 Number of rotations of main motor check ..................................................................................127
34-6 Performing output check ..............................................................................................................128
34-7 Performing X/Y motors/origin sensors check.............................................................................130
34-8 Performing presser/thread trimmer motor/origin sensor check ...............................................131
34-9 Performing thread clamp motor/origin sensor check ................................................................132
34-10 How to carry out the continuous operation ..............................................................................133
35. COMMUNICATION SCREEN OF MAINTENANCE PERSONNEL LEVEL...............134
35-1 Data which are possible to be handled........................................................................................134
35-2 Displaying maintenance personnel level.....................................................................................135
35-3 Performing rewriting of program..................................................................................................136
36. INFORMATION SCREEN OF THE MAINTENANCE PERSONNEL LEVEL.............138
36-1 Display of error record ..................................................................................................................138
36-2 Display of the cumulative working information..........................................................................140

– 1 –
1. NAME OF EACH SECTION OF THE OPERATION PANEL
1-1 Body
(Front) (Right side)
②④ ⑤
①
⑧
⑦
⑥
⑨
⑩
⑪
⑫
③

– 2 –
①Touch panel • LCD display section
②READY key →Changeover of the data input screen and the
sewing screen can be performed.
③INFORMATION key →Changeover of the data input screen and the
information screen can be performed
④COMMUNICATION key →Changeover of the data input screen and the
communication screen can be performed.
⑤MODE key →Changeover of the data input screen and the
mode changeover screen which performs various
detail settings can be performed.
⑥Contrast control
⑦Brightness control
⑧CompactFlash (TM) eject button
⑨CompactFlash (TM) slot
⑩Cover detection switch
⑪Connector for external switch
⑫Connector for control-box connection

– 3 –
1-2 Buttons to be used in common
CANCEL button →This button closes the pop-up screen.
In case of the data change screen, the data being changed can
be cancelled.
ENTER button →This button determines the changed data.
UP SCROLL button →This button scrolls the button or the display in the upward
direction.
DOWN SCROLL button →This button scrolls the button or the display in the downward
direction.
RESET button →This button performs the release of error.
NUMERAL INPUT button →This button displays ten keys and input of numerals can be
performed.
CHARACTER INPUT
button
→This button displays the character input screen.
→ Refer to "18. NAMING PATTERN" p.46 .
PRESSER DOWN button → This button lowers the presser and displays the presser down screen.
To raise the presser, press PRESSER UP button displayed in the
presser down screen.
BOBBIN WINDER button →This button performs bobbin thread winding.
→ Refer to "11. WINDING BOBBIN THREAD" p.29 .
The buttons which perform common operations in each screen of IP-420 are as follows :

– 4 –
2. BASIC OPERATION OF IP-420
①Turn ON the power switch
When the power is turned ON rst, the selection
screen of the language is displayed. Set the
language used. (It is possible to change with
memory switch .)
②Select the pattern No. you desire to sew.
When the power is turned ON , the data input
screen is displayed. The shape which is selected
at present in the center of the screen is displayed
on SHAPE SELECTION button A and the
selection of the sewing shape can be performed
when pressing the button. For selecting procedure
of the sewing shape, refer to "4. PERFORMING
SEWING SHAPE SELECTION" p.11 .
For the pattern No., refer to the sewing
shape list.
When the presser is raised, be careful that
ngers are notcaught in the presser since
the presser moves after havinglowered.
When READY key B is pressed, the back color
of LCD display is changed to green, and the sewing
machine is set to the sewing possible state.
When ending the selection screen with
CANCEL button or ENTER button
without selecting the language, the selection
screen of the language is again displayed
when turning ON the power next.
LK-1900B is explained as the standard in this Instruction Manual.
When turning OFF the power without
pressing READY key, the setting of
"Pattern No . " , "XY scale" and "number
of max. rotation" are not memorized.
③Start sewing.
Set the sewing product to the presser portion, and
operate the pedal to start the sewing machine,
and sewing starts.
* For the screen, refer to "3. LCD DISPLAY
SECTION AT THE TIME OF SEWING SHAPE
SELECTION" p.5 .
A
B

– 5 –
3. LCD DISPLAY SECTION AT THE TIME OF SEWING SHAPE SELECTION
3-1 Sewing shape data input screen
A B C D E
F
G
H
J
I
L
K
M
P
N
O

– 6 –
Button and display Description
APATTERN BUTTON NEW
REGISTER button
Pattern button new register screen is displayed.
→Refer to "14. PERFORMING NEW REGISTER OF PATTERN BUTTON"
p.35 .
BUSERS' PATTERN NEW
REGISTER button
Users' pattern new register screen is displayed.
→Refer to
"13. PERFORMING NEW REGISTER OF USERS' PATTERN"
p.34
.
CTHREAD CLAMP button Effective/ineffective of thread clamp is selected.
: Thread clamp ineffective
: Thread clamp effective
*When the prohibition of thread clamp is set with memory switch ,
the thread clamp button is not displayed.
DPRESSER DOWN button Presser can be lowered and the presser down screen is displayed.
To raise the presser, press the presser up button which is displayed in the
presser down screen.
EBOBBIN WINDER button Bobbin thread can be wound.
→Refer to "11. WINDING BOBBIN THREAD" p.29 .
FSEWING SHAPE No. display Kind and No. of the sewing shape being selected at present are displayed.
There are three kinds of sewing shapes below.
: Standard pattern
: Media pattern
: Users' pattern
GSEWING SHAPE SELECTION
button
Sewing shape being selected at present is displayed on this button and
when the button is pressed, the sewing shape selection screen is displayed.
→Refer to "4. PERFORMING SEWING SHAPE SELECTION" p.11 .
HNEEDLE THREAD TENSION
SETTING button
Needle thread tension value which is set to the pattern data being selected
at present is displayed on this button and when the button is pressed, the
item data change screen is displayed.
→Refer to "6. PERFORMING ITEM DATA CHANGE" p.17 .

– 7 –
Button and display Description
IX ACTUAL SIZE VALUE display Actual size value in X direction of sewing shape being selected at present is
displayed.
When the actual size value input is selected by setting memory switch
, X actual size value setting button is displayed.
→Refer to
"6. PERFORMING ITEM DATA CHANGE" p.17
.
JX SCALE RATE SETTING button Scale rate in X direction of sewing shape being selected at present is
displayed on this button.
When the scale input is set to non-selection by setting memory switch
, the button goes out and the X scale is displayed.
→Refer to
"6. PERFORMING ITEM DATA CHANGE" p.17
.
KY ACTUAL SIZE VALUE display Actual size value in Y direction of sewing shape being selected at present is
displayed.
When the actual size value input is selected by setting memory switch
, Y actual size value setting button is displayed.
→Refer to
"6. PERFORMING ITEM DATA CHANGE" p.17
.
LY SCALE RATE SETTING button Scale rate in Y direction of sewing shape being selected at present is
displayed on this button. When the scale input is set to non-selection by
setting memory switch , the button goes out and the Y scale is
displayed.
→Refer to
"6. PERFORMING ITEM DATA CHANGE" p.17
.
MMAX. SPEED LIMITATION Maximum speed limitation which is set at present is displayed on this button
and when the button is pressed, the item data change screen is displayed.
→Refer to
"6. PERFORMING ITEM DATA CHANGE" p.17
.
NFOLDER No. display Pattern register button which is displayed indicates the folder No. which has
been stored.
OFOLDER SELECTION button Folders to display the patterns are displayed in order.
PPATTERN REGISTER button PATTERN REGISTER buttons stored in N FOLDER No. display are
displayed.
→Refer to "14. PERFORMING NEW REGISTER OF PATTERN BUTTON"
p.35 .

– 8 –
3-2 Sewing screen
AB C
F
N
E D
O
P
R
Q
G
J
M
K
H
I
L

– 9 –
Button and display Description
ATHREAD CLAMP button Effective/ineffective of the thread clamp is selected.
: Thread clamp ineffective
: Thread clamp effective
*When the prohibition of thread clamp is set with memory switch ,
the thread clamp button is not displayed.
BPRESSER DOWN button Presser can be lowered and the presser down screen is displayed.
To raise the presser, press the presser up button which is displayed in the
presser down screen.
CRETURN TO ORIGIN button This button returns the presser to the start of sewing and raises the presser.
DX ACTUAL SIZE VALUE display Actual size value in X direction of sewing shape being selected is displayed.
EX SCALE RATE display Scale rate in X direction of sewing shape being selected is displayed.
FSEWING SHAPE No. display Kind and No. of sewing shape being selected at present are displayed.
There are three kinds of sewing shapes below.
: Standard pattern
: Media pattern
: Users' pattern
GSEWING SHAPE display Sewing shape being selected at present is displayed.
HSEWING SHAPE Total number of
stitches display
Total number of stitches of the sewing shape being selected at present is
displayed.
INEEDLE THREAD TENSION
SETTING button
Needle thread tension value which is set to the pattern data being selected
at present is displayed on this button and when the button is pressed, the
item data change screen is displayed.
→Refer to
"6. PERFORMING ITEM DATA CHANGE" p.17
.
JCOUNTER VALUE CHANGE
button
Existing counter value is displayed on this button. When the button is
pressed, the counter value change screen is displayed.
→Refer to "12. USING COUNTER" p.30 .
KCOUNTER CHANGE OVER
button
Display of sewing counter/No. of pcs. counter can be changed over.
→Refer to "12. USING COUNTER" p.30 .

– 10 –
Button and display Description
LSTEP SEWING button Display of sewing counter/No. of pcs. counter can be changed over.
→Refer to "7. CHECKING PATTERN SHAPE" p.19 .
MFOLDER No. display Pattern register button which is displayed indicates the folder No. which has
been stored.
NSPEED variable resistor Number of rotations of the sewing machine can be changed.
OY ACTUAL SIZE VALUE display Actual size value in Y direction of sewing shape being selected is displayed.
PY SCALE RATE display Scale rate in Y direction of sewing shape being selected is displayed.
QMAX. SPEED LIMITATION display Maximum speed limitation which is set at present is displayed.
RPATTERN REGISTER button Pattern register buttons stored in M FOLDER No. display are displayed.
→Refer to
"14. PERFORMING NEW REGISTER OF PATTERN BUTTON"
p.35
.

– 11 –
4. PERFORMING SEWING SHAPE SELECTION
①Display the data input screen.
Only in case of the data input screen (blue), the
selection of sewing shape is possible. In case
of the sewing screen (green), press READY key
and display the data input screen (blue).
②Call the sewing shape selection screen.
Press SEWING SHAPE button A and the
sewing shape selection screen is displayed.
③Select the kind of sewing shape.
There are three different sewing shapes.
Press SEWING SHAPE SELECTION button
B.
A
B

– 12 –
Be sure to use the media that has been for-
matted with IP-420.
For the formatting procedure of the media,
refer to “26-3 Performing format” p.88 .
⑥Determine the sewing shape.
When ENTER button G is pressed, the
sewing shape is determined and the data input
screen is displayed.
④Determine the kind of sewing shape.
There are three kinds of sewing shapes below.
Select the kind you desire from among them.
Select the sewing shape you desire from
SEWING SHAPE SELECTION buttons C and
press ENTER button D.
The sewing shape list screen corresponding
to the kind of sewing shape you selected is
displayed.
Pictograph Name Maximum number of
patterns
Standard pattern 1900/1901/1902 : 51
1903 : 50
Users' pattern 200
Media pattern 999 D
C
F
G
E
⑤Select the sewing shape.
When UP or DOWN SCROLL button
E is pressed, SEWING SHAPE buttons F are
changed over in order. The description of the
sewing shape is displayed in the button.Here,
press the SEWING SHAPE button you desire
to select. The details of the selected shape is
displayed at the upper part of the screen.

– 13 –
H
I
When the sewing shape is media pattern the
screen as shown on the right side is displayed.
PATTERN No. SELECTION buttons H which
have been registered to media pattern are
displayed. Press the button of the pattern No. you
desire to select.
In addition, when you desire to conrm the shape
you selected, press VIEWER button I.
Then the viewer screen is displayed and the
selected shape is displayed.
When the sewing shape is users' pattern or
media pattern the screen as shown on the right
side is displayed.
PATTERN No. SELECTION buttons H which
have been registered to users' pattern or media
pattern are displayed. Press the button of the
pattern No. you desire to select.
In addition, when you desire to conrm the shape
you selected, press VIEWER button I.
Then the viewer screen is displayed and the
selected shape is displayed.
H
I

– 14 –
5. SEWING SHAPE LIST
5-1 LK-1900B / LK-1901B / LK-1902B
No Stitch diagram
Sewing
size (mm)
No Stitch diagram
Sewing
size (mm)
1
(51)
42 2.0 16 1 17 21 0 10 1
2 2
3 3
22.0 10 1 18 28 0 10 1
2 2
3 3
*3 2.5 16 1 19 0 25 6
47
*4 3.0 24 620 36 025 6
7 7
5 28 2.0 10 1 21 41 0 25 6
27
3
*6 2.5 16 1 22 44 0 35 (Note 3)
4
7 36 2.0 10 1 23 28 20 4.0 9
210
3
*8 2.5 16 1 24 36 20 4.0 9
4 10
*9 56 3.0 24 6 25 42 20 4.0 9
710
*10 64 3.0 24 6 26 56 20 4.0 9
710
11 21 2.5 6 6 27 18 20 0 11
12 28 2.5 6 28 21 10 0
13 36 2.5 629 20 0
14 14 2.0 8 5 30 28 20 0
15 21 2.0 8
16 28 2.0 8
(Other side)(Other side)(Other side)(Other side)(Other side)(Other side)(Other side)(Other side)
Large bar-tackingSmall bar-tacking
Knit goods bar-tacking
Linear bar-tackingLengthwise bar-tacking
Lengthwise linear bar-tacking
Number of stitches
Lengthwise
Crosswise
(Note 2) No. of
presser
Lengthwise
Crosswise
(Note 2) No. of
presser
Number of stitches
(This side)(This side)(This side)(This side)(This side)(This side)(This side)(This side)
1. Sewing size shows the dimensions when
the scale rate is 100%.
2. Refer the No. of presser to the separate
table of presser.
3. For No. 22, process the presser blank for use.
4. Use the patterns with * marks for sewing denim.
5. No.51 is for the machine without tread clamp.

– 15 –
No Stitch diagram
Sewing
size (mm)
31 52 7 10 13
32 63 7 12 13
33 24 610 13
34 31 6 12 13
35 48 10 714
36 48 10 714
37 90 324 6
7
38 28 2 8 5
39 28 Φ12 16
40 48
No Stitch diagram
Sewing
size (mm)
41 29 20 2.5 12
42 39 25 2.5 12
43 45 25 2.5 12
44 58 25 2.5 12
45 75 30 2.5 12
46 42 30 2.5 12
47 91 Φ8 15
48 99
49 148
50 164
Number of stitches
Lengthwise
Crosswise
(Note 2) No. of
presser
Number of stitches
Lengthwise
Crosswise
(Note 2) No. of
presser
Semilunar bar-tacking
Large bartacking
Knit goods bartacking
Round bar-tacking
Lengthwise bar-tacking
Radial tacking
Pattern Nos. 41 to 46 are for the optional
work clamp foot No. 12. They are different
from the lengthwise bar tacking pattern Nos.
23 to 26 in the origin by 5 mm up and down.

– 16 –
5-2 LK-1903B
Pattern
No.
Stitch
shape
Number of
threads
(thread)
Standard
sewing size
X (mm)
Standard
sewing size
Y (mm)
Pattern
No.
Stitch
shape
Number of
threads
(thread)
Standard
sewing size
X (mm)
Standard
sewing size
Y (mm)
1 - 34 6-6
3.4 3.4
18 - 44 6
3.4 0
2 - 35 8-8 19 - 45 8
310-10 20 10
4 12-12 21 12
5 - 36 6-6 22 16
6 - 37 8-8 23 - 46 6
0 3.4710-10 24 10
812-12 25 12
9 - 38 6-6 26 - 47 6-6
3.4 3.4
10 - 39 8-8 27 10-10
11 10-10 28 - 48 6-6
12 - 40 6-6 29 10-10
13 - 41 8-8 30 - 49 5-5-5
3.0 2.5
14 10-10 31 8-8-8
15 - 42 6-6 32 - 50 5-5-5
16 - 43 8-8 33 8-8-8
17 10-10
* The standard sewing sizes of X and Y are when the enlargement/reduction rate is 100%.
Use pattern Nos. 34 to 50 when the button hole is small (φ1.5 mm or less).
* For the sewing machine provided with the bird's nest preventing and shorter-thread remaining type thread
trimmer, pattern numbers 23 to 25, 30 to 33, 46, 49 and 50 have been factory-set, at the time of delivery,
so that they are not displayed.
To use those pattern numbers, change the setting so that the memory switch K102 is displayed.