JUKI LK-1900B series Engineer's Manual

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(3)Blockdiagram_NFCType(MC-672)
LK-1900BNB, 1903BNB
LK-1900BNB, 1903BNB
2 port solenoid valve
PV120205000
Solenoid valve code A (asm.)
40153196
Work clamp foot lifter
sensor (compl.)
40104916
Thread trimmer sensor (compl.)
40142726
Safety switch (asm.)
40006495
X-feed motor
40139176
Y-feed motor
40139177
Needle thread
clamp motor
40139179
Main shaft motor
(IPM 550W)
40138137
Main shaft servo encoder
Main shaft servo motor power cable
Thread trimmer/work
clamp foot lifting motor
40139178
AT solenoid (asm.)
40142797
Encoder
2-phase
2-phase
2-phase
2-phase
Encoder
Unipolar
Unipolar
Bipolar
Bipolar
Encoder
4P
Solenoid relay
cable (asm.)
40005728
40111214
FAN
Button clamp unit
solenoid (asm.) (OP)
40006912
LED UNIT
40193892
INT cable (asm.) [It is connecting directly to INT board.]
CN146
40146296
Solenoid valve code B (asm.)
40153197
Auto switch A (asm.)
40153194
40193744
Auto switch B (asm.)
40153195
Terminal
Terminal
FLTboard(asm.)
MAIN board (asm.)
40137370
INT board (asm.)
Control BOX
40189857 : Single-phase
40189858 : Three-phase
40189859 : CE
NFC panel
40189779 : Single-phase, Three-phase
40191867 : CE
SDC board (asm.)
Power switch
3ø : 40141488
CE : 4016295
FLT-T : 40105465 (3ø)
FLT-CE : 40145901 (CE)
(Only for CE and 3ø)
40141487: General
40023371: General export
M90175800A0: 3ø
40005390: CE
AC200 〜240V
40113427
(It is not supplied with CE type.)
CN1
CN16
FG1
FM-ONE
40114375
40142267
40114373
CN10
6P
6P
CN11
CN37
CN36 (Red)
(BR-IF)
(OP)
CN31 CN38
40P
CN13
85V
4P
40P 4P2P
CN16
9P 8P
CN50 (White)
(DSP-JTAG)
10P
CN49 (White)
(PLD-JTAG)
6P
CN54 (Red)
(Suction nozzle sensor)
(OP)
4P
CN51 (Yellow)
(Temporary stop, thread
breakage detection)
(OP)
4P
CN41 (White)
(Work clamp foot, start switch)
(OP)
CN71
CN70
9P
CN52 (Black)
(Air suction)
(OP)
2P
CN46(Black)
(Air shorter thread remaining
thread trimmer, suction nozzle)
(OP)
4P
4P
CN40 (White)
(Pedal sensor)
3P
3P
30P
CN71
(Black)
CN75
(White)
3P
CN72
(Red)
3P
CN73
(Red)
2P
CN53 (Yellow)
(Shorter thread remaining
thread trimming sensor)
(OP)
3P
CN48 (Red)
(Writing of software)
9P
3P
CN14
2P
CN17
4P
CN15
9P
CN34
26P
(White)CN33
For FAN
2P
(Red)CN45
4P
(Black)CN44
4P
(Blue)CN43
6P
(White)CN42
6P
(White)CN47
2P
(White)CN39
2P
CN30
30P
10P
CN76
(Blue)
10P
CN77
(Red)
10P
Pedal sensor L (asm.)
MC-672 MC-672N Remarks
MAIN board (asm.) 40152920 40193744 The difference between MC-672 and MC672N is the MAIN board.
Standard operation
panel
○ ○
NFC panel
X ○
(Supplement)
40152920: NFC-compatible software is not installed.
40193744: NFC-compatible software is installed.
* The hardware specication is the same.

JUKI LK-1900B series Specifications

General

Brand	JUKI
Model	LK-1900B series
Category	Sewing Machine
Language	English