Brother S-7780A, Инструкция по эксплуатации

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S-7780A
6. STANDARD ADJUSTMENTS
55
6-4. Adjusting the feed dog angle
1. Turn on the power.
2. Turn off start backtack sewing, best PFM mode, slow start
and special locus.
3. Set the feed pitch to 4 mm.
4. Press and hold the ENTER key (1) and then press the
SEL key (2).
* The standard angle for the feed dog (3) when it drops until it
is aligned with the top of the needle plate is when the
“○”
mark on the shaft (4) is aligned with the feed rocker bracket
arm (5) and the feed dog (3) is parallel to the needle plate.
5. Turn the machine pulley to move the feed dog (3) to its
highest position above the needle plate.
6. Tilt back the machine head.
7. Loosen the set screw (6).
8. Turn the shaft (4) in the direction of the arrow within a
range of 90° with respect to the standard position.
・
In order to prevent puckering, lower the front of the
feed dog (3). (Fig. [B])
・
In order to prevent the material from slipping, raise the
front of the feed dog (3). (Fig. [A])
9. Securely tighten the set screw (6).
10. After adjusting, press the SEL key (2).
NOTE:
The height of the feed dog (3) will change after the angle
has been adjusted, so it will be necessary to re-adjust the
height of the feed dog (3).
6-5. Adjusting the needle bar height
Reference line (a) on the needle bar (1) should be aligned
with the lower edge of the needle bar bush (2) as shown in
the illustration when the needle bar (1) is at its lowest
position.
1. Turn the machine pulley to set the needle bar (1) to its
lowest position.
2. Remove the rubber cap (3) from the face plate.
3. Loosen the screw (4) and move the needle bar (1) up or
down to adjust its position.
4. Securely tighten the screw (4).
5. Install the rubber cap (3).
Lower the
front
Raise the
front
Standard
1437D
1785D