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Brother BAS-415 - Electrical problem

Brother BAS-415
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c TROUBLESHOOTING )
[iJ
Mechanical
problem
In
case
of
a malfuncti.on, diagnose
the
problem referring
to
the
table
below.
If
the
problem persists,
turn
off
the
power
and contact
your
dealer.
Problem
1.
Machine operates incorrectly.
2.
Upper
shaft
is locked
at
some
point
of
a cycle.
1.
2.
3.
4.
5.
6.
7.
8.
1.
Check
point
Is
set screw
of
rotary encoder loosened?
Is
set screw
of
machine pulley loosened?
Is
set screw
of
N65 pulley loosened?
Is
synchronizer adjusted properly?
Are
wires
of
carriages X and Y
off?
Are
set screws
of
wire
drums X
andY
loosened?
Are
set screws
of
pinion gears
in
pulse motors X
andY
loosened?
Is
sewing data in
floppy
disk normal?
Is
movable
knife
for
thread
trimming
stopped
in
middle
of
operation?
[How
to
adjust]
• Remove thread
or
other
interruption
for
good thread
trimming
operation.
• Remove needle plate and reset
it
in
proper position
manually
as
in
the
figure
below.
Movable knife
[NOTE] When movable
knife
is
in
middle
of
operation,
the
safety system works
so
that
the
upper shaft cannot
rotate.
2.
Is
thread take-up stopped
with
striking upper
case
cover?
[How
to
adjust]
Remove adjustment
base.
Thread take-up
~
Uppercasecover
.!.-.::::-:-._
<-..
~
Inner thread
guide)'
i
Thread take-up operating lever
Loosen
the
bolt
of
the
thread take-up operating lever
to
adjust movable range
of
thread take-up,
then
re-tighten
it.
3.
Is
position
of
needle bar clamp
or
stopper correct?
-118-
From the library of: Superior Sewing Machine & Supply LLC

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