Brother International BAS-415 Instruction Manual - English - Page 81

knife, thread, take-up, screw, upper, cover, needle, inner, guide, operating, lever

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Problem Check point 8. Machine operates incorrectly. 9. Upper shaft is locked at some point of a cycle. 1. Is set screw of rotary encoder loosened? 2. Is set screw of machine pulley loosened? 3. Is set screw of N65 pulley loosened? 4. Is synchronizer adjusted properly? 5. Are wires of carriages X and Y off? 6. Are set screws of wire drums X and Y loosened? 7. Are set screws of pinion gears in pulse motors X and Y loosened? 8. Is sewing data in floppy disk normal? 1. 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. knife O 0 0 O O 1 mm O [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? [l-low to adjust] thread take-up upper case cover set screw needle bar case - inner thread guide -' "- 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? - 78 -

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Problem
Check
point
8.
Machine
operates
incorrectly.
1.
Is
set
screw
of
rotary
encoder
loosened?
2.
Is
set
screw
of
machine
pulley
loosened?
3.
Is
set
screw
of
N65
pulley
loosened?
4.
Is
synchronizer
adjusted
properly?
5.
Are
wires
of
carriages
X
and
Y
off?
6.
Are
set
screws
of
wire
drums
X
and
Y
loosened?
7.
Are
set
screws
of
pinion
gears
in
pulse
motors
X
and
Y
loosened?
8.
Is
sewing
data
in
floppy
disk
normal?
9.
Upper
shaft
is
locked
at
some
point
of
a
cycle.
1.
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.
knife
O
O
0
0
O
O
1
mm
[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?
[l
-low
to
adjust]
thread
take-up
set
screw
upper
case
cover
needle
bar
case
—
inner
thread
guide
—'
"-
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?
-
78
-