Printed Circuit Board U1 - ELNA eXpressive920 Service Manual

Setscrew

Printed circuit board U1

Presser foot lifter motor
Bobbin winder motor
Needle threader motor
Replacing Electronic Components
Setscrew
Board U1 schematic
Buttonhole sensor
Presser foot lifter switch
Printed circuit board
A relay (26-pin)
Printed circuit board U1
NOTE:
Do not disconnect the connectors by pulling on cord.
To disconnect the connectors, grasp the connector, not the
cord.
To remove:
1. Remove the top cover (see page 2).
2. Disconnect the connectors. Remove the setscrews
(2 pcs.) and printed circuit board U1.
To attach:
Follow the above procedure in reverse.
Relay cable (2-pin)
Thread cut detection
No connection
LED (Blue) LED (white)
9
Thread tension motor
Zigzag motor
Printed circuit board A relay
(24-pin)