Operation Of Other Electronic Components - Brother NV-10A Service Manual

Outline of Mechanism Operation of other electronic components
Start/Stop (SS) Switch . . . . . . . . . . . . . . . . . Switch for starting and stopping the sewing machine. The
Reverse switch . . . . . . . . . . . . . . . . . . . . . . . This switch is for backtracking or ending a seam. If the switch is
Raise needle switch . . . . . . . . . . . . . . . . . . . This switch toggles the needle between the up and down
Operation PCB assembly . . . . . . . . . . . . . . . Input for pattern selection and other conditions necessary for
BH (button hole) switch . . . . . . . . . . . . . . . . This switch is for detecting the forward and rear ends of the
BH (button hole) lever switch . . . . . . . . . . . This switch detects whether the BH lever is up or down.
NP sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . This sensor detects the drive timing for the pulse motor for
Speed sensor. . . . . . . . . . . . . . . . . . . . . . . . . This sensor detects the rotational speed of the main motor. It
Presser switch. . . . . . . . . . . . . . . . . . . . . . . . This switch detects the vertical position of the presser foot lifter.
BW (bobbin winder) switch . . . . . . . . . . . . . When the bobbin thread is wound, this switch detects whether
Foot control jack. . . . . . . . . . . . . . . . . . . . . . This is the jack for plugging in the foot controller when it is
LED lamp R assy.. . . . . . . . . . . . . . . . . . . . . White LED lamps for illuminating the work space.
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machine operates at a slow speed while the switch is being held
down.
pushed, it makes three to four stitches in that place and stops
automatically. If the switch is held down, it sews at a slow speed
in the reverse direction as long as the switch is held.
positions.
sewing.
button hole according to the BH presser and lever.
zigzagging and feed, the vertical stop position for the needle. It
detects the upper shaft angle of rotation using a shutter attached
to the upper shaft and an optical sensor.
detects the upper shaft rotational speed using a shutter attached
to the upper shaft and an optical sensor.
the bobbin is set for winding or not.
used.