Brother International MD-817 Service Manual - Page 25

Sewing, machine

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Explanation DIP switch DIPC & DIPD of Mark II DIPC 1 Sewing machine ON speci₹ication (change on and off OFF timming of reverse solenoid at back- ON 2 tack) OFF Delay time from ON 3 presser down to * start OFF ON 4 Slowdown control OFF Continuous backta- ON 5 ck selection OFF ABCD+10 continuous ON 6 backtack OFF End backtack ON 7 control OFF Soft drop of ON 8 presser foot l ifter OFF B 8 42 OFF ON OFF ON 8845 8875 B737 B79I B774 (03) (00) (01) (02) OFF OFF ON ON There is delay time at start none Normal ly slowdown (usual slowdown) Fix time of inching period on slowdown A.B sewn repeatedly D times A. 11,C.0 10 stitches added to the display A.B,C,D Seam A.B.C.0 sewn as displayed Don't slow down to low speed on starting end B.T. Slow down to low speed on starting end B.T. There is soft drop of presser foot l ifter none DIPD 1 Mode selection ON Parameter setting mode OFF Normal ly sewing mode Half stitch 2 correction ON Forward one stitch cor. /Forward half stitch cor. OFF Forward one stitch cor. /none Backward 3 correction ON Forward one stitch cor. /Backward one stitch cor. OFF Forward one stitch cor. //none Optional output ON 4 y (1-2 pin of sewin- OFF g machine connect - tor 12P) ON 5 OFF Dependence on DIPD-5 Output for tension release of standard 3 position Output for pul ler Output for needle cooler or vacuum pump Sewing direction ON Stopped as reverse direction at finished B 6 at finished and s- topped start B.T. OFF Stopped as normal ly direction at finished B 8+1 start B.T. or ON 1 stitch added to the displayed B seam length 7 continuous B. T. OFF Seam B sewn as displayed 8 D+1 end backtack ON 1 stitch added to the displayed D seam length OFF Seam D sewn as displayed Note : DIPD-5 is activated when DIPB-2 is set to OFF. Note : Functions indicated with a mark are activated on the new CPU version ( J01520-8 mask no. 128 ). Note : A phrase on the left of "//" indicates that toggle switch SW2 should be set to ON and if a phrase is on the right then it should be set to OFF. - 21 -

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Explanation
DIP
switch
DIPC
&
DIPD
of
Mark
II
DIPC
1
Sewing
machine
speci₹ication
(change
on
and
off
timming
of
reverse
solenoid
at
back—
tack)
ON
OFF
OFF
B737
(00)
ON
B79I
(01)
OFF
B774
(02)
ON
B
8
42
8845
8875
(03)
2
ON
OFF
OFF
OFF
ON
ON
3
*
Delay
time
from
presser
down
to
start
ON
There
is
delay
time
at
start
OFF
none
4
Slowdown
control
ON
Normal
ly
slowdown
(usual
slowdown)
OFF
Fix
time
of
inching
period
on
slowdown
5
Continuous
backta—
ck
selection
ON
A.B
sewn
repeatedly
D
times
OFF
A.
11,C.0
6
ABCD+10
continuous
backtack
ON
10
stitches
added
to
the
display
A.B,C,D
OFF
Seam
A.B.C.0
sewn
as
displayed
7
End
backtack
control
ON
Don't
slow
down
to
low
speed
on
starting
end
B.T.
OFF
Slow
down
to
low
speed
on
starting
end
B.T.
8
Soft
drop
of
presser
foot
l
ifter
ON
There
is
soft
drop
of
presser
foot
l
ifter
OFF
none
DIPD
1
Mode
selection
ON
Parameter
setting
mode
OFF
Normal
ly
sewing
mode
2
Half
stitch
correction
ON
Forward
one
stitch
cor.
/Forward
half
stitch
cor.
OFF
Forward
one
stitch
cor.
/none
3
Backward
correction
ON
Forward
one
stitch
cor.
/Backward
one
stitch
cor.
OFF
Forward
one
stitch
cor.
//none
4
y
Optional
output
(1-2
pin
of
sewin—
g
machine
connect
—
tor
12P)
ON
Dependence
on
DIPD-5
OFF
Output
for
tension
release
of
standard
3
position
5
ON
Output
for
pul
ler
OFF
Output
for
needle
cooler
or
vacuum
pump
6
Sewing
direction
at
finished
and
s—
topped
start
B.T.
ON
Stopped
as
reverse
direction
at
finished
B
OFF
Stopped
as
normal
ly
direction
at
finished
B
7
8+1
start
B.T.
or
continuous
B.
T.
ON
1
stitch
added
to
the
displayed
B
seam
length
OFF
Seam
B
sewn
as
displayed
8
D+1
end
backtack
ON
1
stitch
added
to
the
displayed
D
seam
length
OFF
Seam
D
sewn
as
displayed
Note
:
DIPD-5
is
activated
when
DIPB-2
is
set
to
OFF.
Note
:
Functions
indicated
with
a
mark
are
activated
on
the
new
CPU
version
(
J01520-8
mask
no.
128
).
Note
:
A
phrase
on
the
left
of
"//"
indicates
that
toggle
switch
SW2
should
be
set
to
ON
and
if
a
phrase
is
on
the
right
then
it
should
be
set
to
OFF.
—
21
—