JUKI LBH-1790 Instruction Manual page 14

(9) Connecting the cords
Perform the connection of the cords as shown in the figure below.
CN16 CN14
CN34
MAIN circuit
board
SDC circuit board
CN14
CN16
q
SDC circuit
board
CN37
CN38
CN39
CN41
CN44
CN42
Cord
clamp A
CN14
CN16
CN37
CN38
CN42
CN39
CN41
CN34
Electric bobbin winding device (optional)
CN44
1) Pass 4 cords (CN38, 39, 41, and 42) connecting
to the right side among the cords connecting to
MAIN circuit board through cord clamp A as shown
in the figure, and connect them to the respective
connectors. Connect CN37 to the connector
without passing through cord clamp A.
In addition, when using the electric bobbin winding
device (optional), similarly pass the cord of the
bobbin winding device through the cord clamp and
connect it to CN44.
2) Directly connect the cord from the operation panel
connecting to the left side of MAIN circuit board
to CN34.
3) Connect the cords connecting to SDC circuit board
directly to CN14 and CN16.
4) Fix the earth wire with the setscrew q.
9
Sewing machine head
Operation panel