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To replace and adjust the needle plate sensor switch
To replace:
To remove:
1. Remove the base. (Refer to page 2)
2. Push and turn the needle plate release dial in direction
A with the screwdriver.
Remove the needle plate and bobbin holder.
* LED light can be too bright when the machine lay
on its side.
3. Disconnect the needle plate sensor switch connector
from the printed circuit board A.
4. Remove the setscrews A (2 pcs) and remove the
needle plate sensor setting plate.
5. Remove the setscrew B and remove the needle plate
sensor switch.
To attach:
1 . Attach the needle plate sensor switch to the needle
plate sensor setting plate and tighten the setscrew B
lightly.
2. Tighten the setscrews A (2 pcs) to fix the needle plate
sensor setting plate.
3. Connect the needle plate sensor switch connector to
the printed circuit board U.
4. After the “To adjust and check” procedure below,
tighten the setscrew B securely.
To adjust and check:
1. Prepare the standard needle plate and the straight
stitch needle plate.
2. Turn the power switch on while pressing the start/stop
button and reverse button to enter the factory setting
mode.
3. Press the “Other Sensor” key to select the sensor/
adjusting mode.
4. Check if the indication of “Straight” is “L” and the
indication of “Zigzag” is “H” when the standard needle
plate is attached.
5. Check if the indication of “Straight” is “H” and the
indication of “Zigzag” is “L” when the straight stitch
needle plate is attached.
If the indication of “Straight” or “Zigzag” is not correct,
move the switch setting plate up or down to adjust the
needle plate sensor switch position until the indication
shows the correct results.
Rear side
Needle plate sensor switch
Needle plate
sensor switch
(Switch setting
plate)
Needle plate sensor
switch cable
(View from the rear bottom side)
Setscrew A
Setscrew B
Setscrew A
Needle plate sensor
setting plate
Reverse button
Start/stop button
Needle plate
release dial
Bobbin holder
Rotary hook
A
B