Adjusting The Machine Head (Direct-Drive Motor Type Sewing Machine Only) - JUKI SC-921 Instruction Manual

6. Adjusting the machine head (direct-drive motor type sewing machine only)

(Caution) 1. When the slip between the marker dot on the handwheel and the concave of the cover is ex-
cessive after thread trimming, adjust the angle of the machine head by the operation below.
2. It is not necessary to adjust the machine head the part of which is connected to CN33.
(Refer to
❸ ❹
❸ ❹
❽
❸ ❹
"II-3. Connecting the cords" p.4
Ⓐ
❺
❻
❺
❻
❼
❾
(MF series only)
❺
❻
.)
1) Simultaneously pressing
❹ and
power switch.
2)
cator and the mode is changed over
to the adjustment mode.
3) Turn the pulley of the machine
Ⓑ
head by hand until the main-shaft
reference signal is detected. At this
time, the degree of an angle from
the main-shaft reference signal is
displayed on the indicator Ⓑ .
(The value is the reference value.)
4) In this state, align marker dot ❼ on the pulley
with recess ❽ on the pulley cover.
The MF-7000 series has two marker lines.
* For the initial setting adjustment, upper marker
line ❼ should be used. For the adjustment of
the thread trimming position, lower marker line
❾ should be used in the case of the MF-7500
Series, and upper marker line ❼ should be used
in the case of the MF-7900 series.
5) Press
adjustment work. (The value is the
reference value.)
– 14 –
switch
switch ❺ , turn ON the
is displayed ( Ⓐ ) in the indi-
switch ❻ to finish the