Curcuit Diagram; Block Diagram (Lk-1910, 1920) - JUKI LK-1910 Engineer's Manual

22. CIRCUIT DIAGRAM

(1) Block diagram (LK-1910, 1920)

Operation
26P
circuit
board asm.
J41
(4A) UDET
Encoder relay cable asm.
S E R V O
15P 8P
MOTOR
P29
4P Servo motor cable asm. 3P
P28
Power cable asm. SW Power cord asm.
Transformer
power cord
asm.
3P
(WHITE)
J4
J3
J2
30P SERVO signal cord asm.
J1
SERVO circuit
board A asm.
J8 4P
J6
J9
2P
SERVO power SERVO power
B cord asm. B cord asm.
Voltage changeover cord asm.
(100V system only)
2P
4P 2P
J33 J36 J32
10P MAIN power cord asm.
J37
4P J30
POWER circuit J34 3P
board asm.
J31
4P
J38 6P
TERMI
Transformer
NAL
asm.
8P
J85 2P
MARKING LIGHT
− 166 −
(1A) UDET
J20 (RED)
J21 (YELLOW)
J23
26P
J19 (BLACK)
J13 (WHITE)
J11
J53 (RED)
30P
J12 (BLACK)
J55 (BLUE)
J59 (YELLOW)
MAIN circuit
board A asm.
J26 (PEDAL, J19)
J16
8P
OP -INPUT
J14 (WHITE)
J99
2P
P99
J15 (BLUE)
FAN asm.
DC24V
P58 U DET
J78
X ORG
3P
J91
Y ORG
P57
3P
TH BRK J92
J22
4P EM STP
J27
J79
THM
2P
20P
J17
Solenoid valve relay
Solenoid valve
cable asm.
12P cable asm.
3P
OUT - P SOL
2P
IN - P SOL
2P
TRM SOL
2P
WIPER SOL
2P
T - REL SOL
2P
OPRE_R SW
3PEDAL
Asm
OPRE_L SW
10P
(A-TYPE STANDARD)
START SW
P60
1PEDAL
PRESS SW
J18
Asm
9P
START SW
(S-TYPE STANDARD)
P61
J25
6P
X PM
6P
Y PM
6P
Machine head grounding
cable A asm.
AIR SW
AIR OPRE - R
AIR OPRE - L
FU-02S (L) OPTION
Needle cooler OPTION
OPTION