Bernina 1230 - Position Hall Sensors S.L. and S.B.

W
What
is
to
be
tested
What
to
adjust
Normal
condition
Position
Hall
sensor
S.L.
Initial
state
of
service
operation
The
Hall
sensor
position
for
stitch
length
(page
17)
is displayed
as
a
binary
number
in
the
(Hall
sensor
position))
field.
The
value
Service
programme
no.
1
must
lie
between
2
min.
and
14
max.
M
1023456
0
o0o
1.Example:
8+4+2+1
i~~ W0
0
0
0
-/00-0
illuminated
8 +
2
=
10
OK
112
CD
8+442+1
f
I
2. Example:
8+4+2+1
00I
"''
10,,
-
illuminated
8 +
4 +
2 +
1 =15
not
OK
a
Position
Hall
sensor
S.B.
Service
programme
no.
2
Same
procedure
as
above,
the
value
must
lie
between
1
min.
and
7
max.
Repair
guide:
If
the
values
cannot
e
reached
then
the
pinion
and
the
magnet
support
must
be
replaced.
(The
freeness
of
movement
in
the
mechanics
must
be
checked.)