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To replace and adjust drop feed micro switch
To replace:
To remove:
1. Remove the base and front cover (refer to pages 1
and 4).
2. Disconnect the connector for drop feed micro switch
from the printed circuit board A.
3. Remove the setscrew A and drop feed micro switch.
To attach:
Follow the steps of removal procedure in reverse.
* After attaching the drop feed micro switch, check
following the steps below.
Auto-lock key
Needle up/down key
(Factory setting mode)
(Numeral key)
(Sensor adjusting mode)
To adjust and check:
1. Turn the power switch on while pressing the auto-
lock key and needle up/doun key to enter the factory
setting mode.
2. Press the numeral key “4” to select the sensor
adjusting mode.
3. Check if the indication of “FeedDog” is “L” when the
feed dog drop lever is in the right (feed dog raised).
Check if the indication of “FeedDog” is “H when the
feed dog drop lever is in the left (feed dog lowered).
If the indication is not correct, adjust the position of the
drop feed micro switch.
Setscrew A
Drop feed micro switch
Feed dog drop lever
(View from the belt cover side)
Feed dog drop lever
to the right (feed
dog raised).