(6) Selection
of
manual countback control function
Numberof stitches limitation and thread trimmingcommandfunctions canbe added to the touchback
switch
on
the
head.
The number of stitches isset by the rotary switches (SWl
SNUM
A to D) on the main circuit board.
This
selection
is
made
using
SW5-5
(SCMBT),
SW6-3
(SCMATR)
and
SW6-4
(SCMESP)
(referto
Table
4-5).
Table
4-5
Application
Name
of
switch
Output
function
SW5
- 5
SCMBT
SW6
- 3
SCMATR
SW6
-4
SCMESP
o
OFF
ON
or
OFF
ON
or
OFF
Manual countback function does not operate.
0
ON
OFF
OFF
Whenthe pedal is depressed and one-touch type reversefeed switch
is operated, the number of switches set by the rotary switches
(SW 1 SNUM A to D) are reverse-stitched.
0
ON
OFF
ON
Even when the sewingmachine is stopped, when the pedal is
depressed and the one-touch type reverse feed switch operated
the number of stitches set by the rotary switches (SWl SNUM A
to
D)
are
reverse-stitched.
O
ON
ON
OFF
Whenthe pedal is depressed and the one-touch type reverse feed
switch operated, the number of stitches set by the rotary switches
(SW 1 SNUM A to D) are reverse-stitched, and then the thread is
trimmed.
©
ON
ON
ON
Even when the sewing machine is stopped, when the pedal is
depressed and the one-touch type reverse feed switch operated
the number of stitches set by the rotary switches (SWl SNUM A
to
D) are reverse-stitched,
and
then
the
thread
is
trimmed.
O
Used
as
a
regular
one-touch
type
reverse
feed
switch.
0
Used
for
reinforcement
stitching
of
pleats,
(only
operates
while
the
sewing
machine
is
running).
0
Used
for
reinforcement
stitching
of
pleats
(operates
whether
the
sewing
machine
is
running
or
stopped).
O
Used
as
start
switch
for
terminal
reverse
stitching
(used
instead
of
thread
trimming
engaged
by
depressing
the
back
part
ofthe
pedal;
operates
only
while
the
sewing
machine
is
running;
particularly
useful
with
a
standing
sewing
machine),
©
Used
as
start
switch
for
terminal
reverse
stitching
(used
instead
of
thread
trimming
engaged
by
depressing
the
back
part
ofthe
pedal;
operates
whether
the
sewing
machine
is
running
orstopp^;
particularly
useful
with
a
standing
sewing
machine).
In the
following
cases,
manual
countback controlisinoperative,
o During
number
of
stitches
count
control
o Duringstop after thread trimming
o
While
TSW
is
ON
(when
TSW
is
turned
ON
while
manual
countback
isin
progress,
thread
is
trimmed
immediately)
o
When
BT
switch
isturnedON
during
countback control
On
SWl
SNUM
A
to
D
SWl
SNUM
A
to
D
are
used
to
set
the
number
of
stitches
when either
of
the following two functions is selected.
o Whenmanual countback is selected, the number
of
stitches
is
indicated.
Fig. 4-5
o ; Needle entry point
• : One-touch type reverse
feed
switch
ON
X ; Thread trimming
SNUMA'^O
BTSUB
JMAX
PNEUF
M400I
301
[
Fig. 4-4
When4 isset, as shown in Fig. 4-4, the number of stitches
is
as
follows.
Here,
when
the
number
of stitches is0, thread
trimming
is performed unmediately.
(Notes)
1.
The
number
of
reverse
stitches
is
the
same
in
both
forward
and
reverse.
2. Insert a screwdriver Into
the
groove shown by
_ 33 _
arrow
to
change
the
number
of stitches.
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