Toyota ESP9000, Service Manual, Page: 15 / 111

4-12. Upper shaft sensor
［Removal］
(1) Remove two setting screws (a) and the
bobbin winder base set. (Fig.1)
(2) Loosen four setting screws (b) and
remove the rear cover. (Fig.1)
(3) Remove two setting screws (c) and the
upper shaft sensor set. Then remove
two setting screws (d) and the upper
shaft sensor. (Figs.1, 2)
(4) Remove four setting screws and the
base cover rear L. (Fig.1)
(5) Loosen two setting screws, remove
other two setting screws, move the
case cover upper upwards, disconnect
the connector CN3 and cut the cable
tie and then remove the upper shaft
sensor. (Refer to Fig.2 on page 47)
［Installation］
(1) Install the upper shaft sensor on the
sensor base with two setting screws (d).
(Fig.3)
(2) Insert the connector of the upper shaft
sensor in CN3 on the main circuit board.
(Fig.5)
(3) Fix the upper shaft sensor set with two
setting screws (c) in the position where
the center of the sensor comes to the
center of the rotation detecting plate.
(Figs.2, 4)
(4) Bundle the cords with cable tie.
(5) Set the DS1-1 on and turn the power
on. Rotate the hand wheel to move the
needle bar to the bottom dead center.
Check that the LCD display shows the
needle position at 180°.
Note: In case the LCD display does not
show 180 ° , loosen the set screw,
adjust the position of the detecting
plate and fix it. (Fig.1)
(6) Install the case cover upper, base
cover rear L, rear cover and bobbin
winder base set.
FIG.1
FIG.2
4.REPLACEMENT OF MAIN COMPONENTS
(c)
Upper shaft sensor set
Upper shaft sensor
(a)
Rear cover
(b)
(b)
Base cover
Rear L
Bobbin winder base set
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