Control Circuit Block Diagram - Brother LK3-B430E Mark II Service Manual

10-13. Control circuit block diagram

Machine head
Option parts
Thread trimming
Emergency stop switch
Red
Black
White
Operation panel
PANEL PCB
S49497–001
P1 PANEL
1 COM0 14 LEDD2
2 COM1 15 LEDD1
3 COM2 16 LEDD0
4 COM3 17 KEY2
5 COM4 18 KEY1
6 COM5 19 KEY3
7 +5V 20 KEY0
8 BUZ 21 KEY4
9 LEDD7 22 KEY5
10 LEDD6 23 S0V
11 LEDD5 24 KEY7
12 LEDD4 25
13 LEDD3 26
Black
White
Clamp
White
Black
Green/ Green/
Yellow
Yellow
Red
Green
Red
Green
Start
Foot switch
1
2 CLAMP1
3 CLAMP2
4
5 EARTH
6
7
8 START
9
Red
U
White
V
Black
W
E
Green/Yellow
Machine motor
P4
B10B-XH-A
SOL2
White
1 +55V
Black
2 THREL
3 +55V
4 OPTION
5
P18 P20 RSPORT
HEAD
Red
1 EMNC
Black
2
White
3 EMNO
+5V
4
5 THREAD
6 GKTH
P14
AIR
1
2
3
4
5
6
7
8
MAIN PCB
9
10 +24V
S49479–001
11 +24V
12
P8
PANEL
1 COM0 14 LEDD2
2 COM1 15 LEDD1
3 COM2 16 LEDD0
4 COM3 17 KEY2
5 COM4 18 KEY1
6 COM5 19 KEY3
7 +5V 20 KEY0
8 BUZ 21 KEY4
9 LEDD7 22 KEY5
10 LEDD6 23 S0V
11 LEDD5 24 KEY7
12 LEDD4 25 LED
13 LEDD3 26 KEY6
P3 P19
SELECT FAN2
1 1COM 5 KEY0
2 2COM 6 KEY1
3 3COM 7 KEY2
4 4COM 8 KEY3
B3B-PH
-K-S
P11
P17 UVW
Gray Gray P10
FOOT
Gray Gray
FAN1
Gray Gray 1 START
( )
Gray Gray 2
( )
3
4 CLAMP1
Gray Gray 5 CLAMP2
( )
Gray Gray 6
B3B-PH
5219-03A -K-S
Green/Yellow
Green/Yellow
DCfan
P2 SYNCHRO
Red
1 +5V
White
2 ENC
Black
3 NLUP
Green
4 NLDW
Yellow
5 S0V
P15 EXIN P1A ORG1 P1B ORG2
Brown
1 +5V 1 +24V
Black
2 XORG A 2 XORG B
Blue
3 GKX 3 S0V
Brown
4 +5V 4 +24V
Black
5 YORG A 5 YORG B
Blue
6 GKY 6 S0V
Brown
7 +5V 7 +24V
Black
8 OSAE A 8 OSAE B
Blue
9 GKOS 9 S0V
10 +24V
11 OPTION
12 S0V
P5
SOL
1 +55V
2 THCUT
3 CLAMP
4 CLAMP
P6
YPM
1 YA
2 YA
3 YB
4 YB
P7
XPM
Orange
1 XA
Blue
2 XA
Red
3 XB
Yellow
4 XB
P9
POWER
Red
1 +5V
Orange
2 +24V
Black
3 S0V
Violet
4
Violet
5
Gray
6 P0V
Gray
7 P0V
P12
DC300
P13
1 0V
DC18 2 +300V
P16
PER
Gray
1
Red
2 +VS
Gray
3
Gray
4
Black
5 S0V
B11B-PH-K-S
Control box
Power switch
Red Red
White White
Black
Yellow/ Yellow/
Green Green
Power supply plug
Synchronizer
Green/Yellow
Thread trimming
Sewing clamp
Solenoid
White
Black
White
Black
Orange
Blue X pulse motor
Red
Yellow
POWER PCB
S49939-001
P1
POWER
Red
1 +5V
Orange
2 +24V
Black
3 S0V
Violet
1 AC200V
4
Violet
2 AC200V
5
Gray
3
6 P0V
Gray
4 EARTH
7 P0V
P5
DC300
PH1
Black Black
1 0V EARTH
Red Red
2 +300V
PH2
EARTH
Gray
1
Red
2 +VS
Gray
3
Gray
4
Black
5 S0V
B11B-PH-K-S
LK3-B430E Mark II
10. ELECTRIC MECHANISM
X home position sensor
Y home position sensor
Sewing clamp sensor
Machine head
Y pulse motor
White
Red (Black)
Green/Yellow
Green/
Yellow
Green/
Yellow
Conversion
transformer
Green/
Yellow
PE
91