15
(2) Film adjustment of location detector
A. For new model type (see figures 14, 15)
Turn the pulley with hand so that the needle bar is placed where it starts rising from the lowest point. Unfasten the
film fixing screw
①
in figure 15, and for
“
DOWN
”
film A, align the film adjustment base line with the sensor
adjustment base line, as can be seen in
ⓚ
. Then, using the fixing screw
①
, tighten only to the degree that the film
will not turn. In the same method, place the thread take up lever in the highest point, once again unfasten the fixed
screw
①
, and align the
“
UP
”
film B like
ⓚ
. Now, be careful not to move the previously set
“
DOWN
”
film A.
B. For old model type (see figure 16)
Adjust in the same method as new model to make the right side
ⓚ
of the film
’
s projecting part aligned to the center
of the sensor base line.
10) Reverse button function
If reverse button
①
is pressed while sewing forward,
reverse sewing takes place immediately. If the machine is
stopped first and the button
①
is pressed before stepping the
pedal to start the machine, reverse sewing will take place
from the very beginning. Also by pressing button
①
while
the machine is at stop position, the high-low position of the
needle bar can be changed.
If the button
①
is pressed once when the needle bar is in
down-stop position, the needle bar changes to up-stop
position. Once again, if the button
①
is pressed twice
consecutively within 1 second, the needle bar changes to
down-stop position.
That is, it has both the reverse sewing and needle up-down
position change functions. (See figure 17)
11) Checking stop position of the sewing
machine
After changing the up-down position of the needle by
pressing the reverse button, check the stop position of the
machine. Check whether the thread take-up lever is in the
highest position when the needle is in up-stop position.
When the stop position is incorrect, there might be problems
to the trimming function, hence the photo film location of
the location detector must be corrected. That is, the needle
up-stop position is the same as the needle bar
’
s stop
position once the trimming action takes place. So there is
no problem with the timing of the trimming action. (See
figure 18)
(See
‘
location detector adjustment
’
on page 14)
sensor
base line
sensor
Photo sensor
fixing screw
Up Film
Adjustment
Up Film
Adjustment
Sensor adjustment base line
Film adjustment base line
Down Film
Adjustment
Down Film
Adjustment
New model location detector
Old model location detector
[Figure 15]
[Figure 16]
[Figure 17]
Thread take up lever
up-stop position
Needle bar frame
[Figure 18]
