Bernina 1230 - Test K; Foot Control Resistance Test

What
is
to
be
tested
What
to
adjust
Normal
condition
Foot
control
When
a
fault in
the foot
control
is
-
Reading
(infinite)
suspected,
first
carry
out
test L.
Connect
the
multimeter
to the
foot con-
trol,
and
switch
to the
range
ohms.
a)
Foot
control
not depressed.
Running
of
main
motor
Needle
stop
down
b) Depress
the foot
control
at
the rear
- Reading
10 k9
(needel
stop
down).
c) Depress
the foot
control
slowly
at
the
- Reading
varies
rom
4 toO
k9
front.
Important:
If the
foot
control
is defective,
open
the foot
control
cover.
Carry
out
tests
a), b)
and
c) on
both
contacts.
If
these give
correct
readings,
replace
the
cord
reel.
If a
fault persists,
then
change
the regulater
housing.
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