JUKI
LBH-1790 Series User Manual

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(8) Stepping motor/solenoid circuit diagram
Thread tension solenoid
R=13.6Ω
Cloth cut knife solenoid
R=3.2Ω
Knife return solenoid
R=5.2Ω
CN68 (Black) CN81 (White)
INT p.c.b. (asm.)
CN82 (Blue)
Black Orange Blue Red Yellow
Black Orange Blue Red Yellow
Black Orange Blue Red Yellow Black White Red Yellow Orange Blue Black White Red Yellow Orange Blue
Needle rock motor R=1.48Ω/1ø Feed motor R=1.48Ω/1ø Presser lifter motor R=1.48Ω/1ø
Needle thread trim motor R=7.05Ω/1ø Bobbin thread trim motor R=7.05Ω/1ø
1 2
1 2
1 2 3 4
1 2 3 4
ACT+ ACT– MES+ MES– MOFF+ MOFF–
CN80 (WHITE)
CN79 (RED)
CN65 (YELLOW) CN69 (RED)
1 2 3 4 5 6
1 2 3 4 5 6
M1M_A M1M_C M1M_E M1M_B M1M_D
NC
1 2 3 4 5 6
1 2 3 4 5 6
M2M_A M2M_C M2M_E M2M_B M2M_D
NC
1 2 3 4 5 6
1 2 3 4 5 6
M3M_A M3M_C M3M_E M3M_B M3M_D
NC
1 2 3 4 5 6
1 2 3 4 5 6
+33V +33V
M4M_A1 M4M_A2 M4M_B1 M4M_B2
1 2 3 4 5 6
1 2 3 4 5 6
+33V +33V
M5M_A1 M5M_A2 M5M_B1 M5M_B2
øD
øE
øC
øB
øA
øD
øE
øC
øB
øA
øD
øE
øC
øB
øA
øA1 COM øA2
øB1
COM
øB2
øA1
COM øA2
øB1
COM
øB2

JUKI
LBH-1790 Series Specifications

General

Brand	JUKI
Model	LBH-1790 Series
Category	Sewing Machine
Language	English