Brother HE-800A User Manual page 55

5. OPERATION
Symptom
Parameter number 35
(Eyelet buttonhole
radius) does not
become larger or
smaller.
Parameter number 02
(Length of knife) does
not become larger.
Parameter number 07
(Knife Y space) does
not become larger.
Parameter number 21
(Front tack length) and
parameter number 31
(Rear tack length) do
not become larger.
Parameter number 13
(Straight bar tack
length) does not
become smaller.
<Remedy>
A. Change the work clamp over to a larger work clamp. Alternatively, change the needle plate to one with a larger hole.
Note: Be sure to change the setting for panel DIP switch B also.
B. Set parameter number 17 (Running length) to a smaller value and then set the straight bar tack length.
47
If the sewing area is 4.0 mm and parameter
number 06 (Knife X space) is set to 0.4 mm
and parameter number 05 (Zigzag width) is set
to 1.5 mm, the eyelet buttonhole radius that
can be entered will be a minimum of (1.5 + 1.5
+ 0.4) y 2 = 1.7 mm, and a maximum of 4.0 y 2
= 2.0 mm.
If the sewing area is 32.0 mm and parameter
number 07 (Knife Y space) is set to 1.0 mm,
parameter number 21 (Front tack length) is set
to 1.0 mm and parameter number 31 (Rear
tack length) is set to 1.0 mm, the knife length
will be 32.0 - 1.0 - 1.0 - 1.0 - 1.0 = 28.0 mm.
(The default setting is 27.8 mm to match the
positions of the needle and cutter.)
See illustration.
See illustration.
The initial setting for parameter number 13
(Straight bar tack length) is 13.0 mm, and for
parameter number 17 (Running length) it is
11.0 mm. At this time, the straight bar tack
length cannot be set to less than 11.0 mm.
Cause
32.0 mm
11.0 mm
HE-800A
4.0 mm
1.5 mm 1.5 mm
0.4 mm
3925Q
1.0 mm
1.0 mm
1.0 mm
1.0 mm
3926Q
13.0 mm
3927Q
Remedy
A
A
B