Initial Adjustment Operations - Bernina 900 electronic Service Manual

Initial adjustment operations
Rotate zig-zag knob (13) to postion (0)
Unscrew mounting screw knob (13) and
rF_ emove knob, Set slihch selection knob
(14) to position (A)
-------
Unscrew the
assoc ated mounting screw and remove
t
*
_ 14 _
Knob and scale together with wheel,
13
i
#^i _ gUnscrew both Phiillips screws (130) and
-lr
\
renmove cover plate (129), The screws are
riot visible until knobs (1:.) and (14) hav
been removed Remove frame cover (128)
and end cover (5) (Light switch has been
switched ,on>.n
U
Temporariy reinsert zig-zag krob (13) and
stitch selection knob (14) together with
scale,
r
g, 3
Adjustments can now be carried out
After adjustments have been made rein-
sert parts in reverse order.
IMPORTANT: The sewing machine can be
completely adjusted and sewn oft prior
to mounting covers
14
128
14
Adjustment of the type 900 sewing
5
, machine
: | m
<
:: land other rnodels)
13 .hese
adjustmen instructions are des:g-
Li ned to assist
mo
minor repairs or adjust-
130
-
ments of the BERNINA sewing machine
~~
129
f
Ol o f
~~tPe
900.
129
tMPORTANT:
The sewing mach ne must
be in perfect mechanical condition (run-
{ning
smoothly. properly oiled etc.) so
tha! idividual adjustments can be carried
out correctly,
-__________________
-
If
the sequence of adjustments is obser-
ved
r peccable speration ot the machine
he onsured