Brother LH4-B800E, Руководство по обслуживанию

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LH4-B800E
4 - 2
4. Adjustment
q
18.52 mm
w
t
r
e
u
y
4-1. Adjusting the needle zigzag home position sensor position
Reference value
Needle bar
Presser bar
Needle moves
to the right
Needle moves
to the left
1. Turn on the power and set the sewing machine to the home position. Then press the RESET key to lower the
presser foot.
2. If the needle is in the center of the needle plate hole, the following adjustment is not necessary. If the needle is not
in the center of the needle plate hole, turn off the power.
3. Loosen the screw
q
, and then adjust the vertical position of the needle zigzag sensor assembly
w
.
* The adjustment required is only slight, so move the needle zigzag sensor assembly
w
a little bit at a time.
4. Repeat the procedure from step 1.
* After adjusting, check that the needle bar bracket
e
and the stopper screws
r
and
t
are not touching when
in test feed mode. If the are touching, adjust the stopper screws
r
and
t
.
If the needle bar is at its furthest zigzag position, place the stopper screws
r
and
t
against the needle bar
bracket
e
, and then turn then back about 1/4 of a turn. Then tighten the nuts
y
and
u
.