Adjusting The Needle Up Stop Position; Adjusting The Treadle - Brother S-7200A Service Manual

5. ADJUSTMENTS

5-13. Adjusting the needle up stop position

5-14. Adjusting the treadle

31
1. While pressing the needle up/down key (1), turn on the
2210M
2. "n.0 xx" will appear in the main display (2).
(-10–20)
3. Press the rightmost
4. Press the ENTER key (4) for two seconds or more.
* A setting value of "10" corresponds to an angle of rotation
Becomes higher
Becomes lower
2211M
<Forward depression sensitivity adjustment>
2301M
If the machine starts running at low speed when your foot is
simply resting on the treadle, or if the treadle pressure is felt
to be too weak, adjust the position (a to c) at which the
treadle spring (1) is hooked onto the treadle lever (2).
* a is the heaviest, and the setting becomes progressively
<Backward depression sensitivity adjustment>
1. Loosen the nut (3) and turn the bolt (4).
2. Tighten the nut (3).
<
Adjusting the treadle stroke
Remove the nut (5), and then move the connecting rod joint
(6) from the position in figure A to the position in figure B.
The treadle stroke will then be increased by approximately
27 %.
At this time, the treadle forward and backward depression
sensitivity will change, so readjust if necessary.
2302M
S-7200A
power switch.
("xx" is the setting value for the needle up stop position,
and "0" is the default setting.)
setting value for the needle up stop position.
・ If you press the key, the setting value will increase
up to 20 and the needle up stop position will become
lower.
・ If you press the
decrease down to -10 and the needle up stop position
will become higher.
A long buzzer will sound and the main display (2) will
change to stitch number display mode. (This completes
the needle up stop position setting.)
of approximately 10° for the upper shaft.
lighter at b and c.
* When the bolt (4) is tightened, the treadle operation
becomes heavier, and when it is loosened, the
operation becomes lighter.
or key (3) to change the
key, the setting value will
2138M 2139M
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