Brother International MD-817 Service Manual - Page 24

Explanation, switches

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E] Explanation each DIP switches of Mark II, NBN, BAST DIPA 1 Position of presser after ON thread trimming OFF Position of presser after ON 2 thread trimming with tree- die in neutral position OFF Position of presser when ON 3 machine is stopped with t- readle in neutral position OFF 4 Double start backtack ON OFF 5 Double end backtack ON OFF 6 AB+10 backtack ON OFF 7 CD+10 backtack ON OFF 8 Start backtack speed sele- ON ction OFF MK2 NBN BAST Down Raised Raised 0 OO O O O Down Raised Down O O O Double start backtack(W) Single start backtack(V) Double end backtack(W) O O - Single end backtack(V) O O - 10 stitches added to the displayed AB seam length Seam AB sewn as displayed O O - 10 stitches added to the displayed CD seam length Q O - Seam CD sewn as displayed Start backtack speed is adjusted by EBT vol. Start backtack speed is adjusted by SBT vol. () () - DIPB 1 Reserved 2 Start backtack selection ON OFF 3 Start and end backtack ON stitch number of E-20,40 OFF 4 Actuator switch function ON OFF 5 Delay time at start with ON standing operation OFF 6 Sewing direction of pleats ON OFF 7 Delay time from presser d- ON own to start on E0 OFF 8 ON OFF Normal ly OFF Stops when treadle is returned to neutral position Sews to end of B when treadle is in neutral position Fixed 4-stitches setting becomes variable Fixed at 4 stitches Thread trimming control lable with actuator switch Correction switch and reverse sewing switch none There is delay time at start with standing operation Normal ly direction ( fixed stitches) Reverse direction (cal l ing pleats sewing) ON OFF 100 ON 150 OFF 200 250 AS MS ON OFF OFF ms ON ms MK2 I NBN I BAST O O - O Q - O O O O O O O O - () - C) O;effectiveness -;ineffectiveness -20-

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E]
Explanation
each
DIP
switches
of
Mark
II,
NBN,
BAST
DIPA
MK2
NBN
BAST
1
Position
of
presser
after
thread
trimming
ON
Down
0
O
O
OFF
Raised
2
Position
of
presser
after
thread
trimming
with
tree—
die
in
neutral
position
ON
Raised
O
O
O
OFF
Down
3
Position
of
presser
when
machine
is
stopped
with
t—
readle
in
neutral
position
ON
Raised
O
O
O
OFF
Down
4
Double
start
backtack
ON
Double
start
backtack(W)
O
O
—
OFF
Single
start
backtack(V)
5
Double
end
backtack
ON
Double
end
backtack(W)
O
O
—
OFF
Single
end
backtack(V)
6
AB+10
backtack
ON
10
stitches
added
to
the
displayed
AB
seam
length
O
O
-
OFF
Seam
AB
sewn
as
displayed
7
CD+10
backtack
ON
10
stitches
added
to
the
displayed
CD
seam
length
Q
O
-
OFF
Seam
CD
sewn
as
displayed
8
Start
backtack
speed
sele—
ction
ON
Start
backtack
speed
is
adjusted
by
EBT
vol.
()
()
—
OFF
Start
backtack
speed
is
adjusted
by
SBT
vol.
DIPB
MK2
I
NBN
I
BAST
1
Reserved
Normal
ly
OFF
2
Start
backtack
selection
ON
Stops
when
treadle
is
returned
to
neutral
position
O
O
-
OFF
Sews
to
end
of
B
when
treadle
is
in
neutral
position
3
Start
and
end
backtack
stitch
number
of
E-20,40
ON
Fixed
4
—stitches
setting
becomes
variable
O
Q
—
OFF
Fixed
at
4
stitches
4
Actuator
switch
function
ON
Thread
trimming
control
lable
with
actuator
switch
O
O
O
OFF
Correction
switch
and
reverse
sewing
switch
5
Delay
time
at
start
with
standing
operation
ON
none
O
O
O
OFF
There
is
delay
time
at
start
with
standing
operation
6
Sewing
direction
of
pleats
ON
Normal
ly
direction
(
fixed
stitches)
O
O
—
OFF
Reverse
direction
(cal
l
ing
pleats
sewing)
7
Delay time
from
presser
d—
own
to
start
on
E0
ON
OFF OFF
100
AS
ON
150
MS
OFF
ON
200
ms
ON
250
ms
()
—
C)
8
ON
OFF OFF
OFF
ON
O;effectiveness
—;
ineffectiveness
-20-