Connecting To The Connector Of The Sc-921 - JUKI LB-6 Manuel D'utilisation

4. Connecting to the connector of the SC-921

WARNING :
• To prevent personal injury caused by abrupt start of the sewing machine, carry out the work after
turning OFF the power switch and a lapse of 5 minutes or more.
• To prevent damage of device caused by maloperation and wrong specifications, be sure to connect
all the corresponding connectors to the specified places.
• To prevent personal injury caused by maloperation, be sure to lock the connector with lock.
* Three kinds of relay cords (connector change cord) are used.
Synchronizer
(Built-in synchronizer)
2
Loosen fixing screw A in the under-cover of the SC-921.
Then, open the cover to find the following connectors.
Connect the machine head connector to the relevant
location.
6
1
1
CN30 : Connect motor signal connector.
2
CN33 : Connect synchronizer.
3
CN36 : Connect intermediate latch and thread tension release solenoid valves.
4
CN37 : Connect presser lifter solenoid valve.
6 CN54 : Connect material end sensor.
7
CN39 : Connect when using foot pedal for standing work (PK-70 or the like).
Presser
Material
lifter
end
solenoid
sensor
valve
Relay
cord
4 6
7
Thread tension
Intermediate
release solenoid latch drive sole-
valve noid valve
Relay cord
3
2
A
3 4
33