Control Circuit Board - Brother S-7200A Service Manual

9. CONTROL BOX AND MOTOR

9-3. Control circuit board

Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet
before opening the face plate of the control box. Touching areas where high voltages are present can result in
severe injury.
<Name and function of each part>
(2) Head detector unit connector
(14) Option connector A
(15) Solenoid-type presser lifter connector
(16) Sewing machine connector
(18) Synchronizer connector
(19) Operation panel connector
(5) Relay connector
(6) Coupler connector
(10) Control power supply connector
Connectors
(1) Treadle connector
(20) Standing operation connector
(13) Puller connector
(3) Option connector 1
(21) Option connector 2
(22) Option connector 3
(9) Cooling fan power supply connector
(23) Thermistor connector
43
DANGER
Connect to sewing machine connectors.
Connect to power supply circuit board connectors.
Connect to transformer connectors.
Connect to treadle unit connector.
Connect to plug (sold separately) for standing operation
Connect to solenoid for puller or other device.
Connect to sewing speed actuator.
For input/output signals used by external devices
Connect to stitch counter actuator.
Only used for three-phase high-voltage specifications.
Connect to shorted connector when not using three-phase
high-voltage specifications.
S-7200A
2328M