Bernina 1230 - Test A; Print L-4200 Testing

What
is
to be
tested
What
to adjust
Normal
condition
Print L-4200
Switch
off mains
supply
See also
directive
in Test M
-
Fit safety
cover
- Connect
test
adaptor L-4200
instead
of the sewing light (2-pole, green),
connect
connecting
cable
to print
S-4200
(4-pole
green,
control signals)
and connecting
cable
to print
S-4200
(5-pole
red, supply).
-
Set
the switch
on the
(off
position.
Switch
on mains
supply
- LEDsAto
D
illuminate
-
Motor rotates.
LED
F illuminated.
Speed can
be controlled
by
the
-
Motor
switch
to oon)
position
potentiometer.
(see also
test
B)
Motor brakes.
LED
F no longer
- Motor
switch to
aoffo position
illuminated
Important:
-
When
no lights
A-D
illuminate
carry ont
test
D mains
cord.
-
Replace
print
L-4200
if
one or
several
of
the LEDs
A
to D do
not
illuminate.
Before
going
further,
test
the
new
L-print
using
test 9 to
determine
whether
the
L-print
failure
was
subsequent
to failure
of
the S-1
230
or A-1
230
prints.
If this
is the
case,
then
these
faults
should
first
be
eliminated.
- Replace
print
R-4200
if
the voltages
A-D
are
available
but
the
motor
still
does
not run.
Subsequently
replace
print L-4200
if the
motor still
does not
run.