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SECTION
6
INSTRUCTION
MANUAL
Model 750 Printer
b)
Apply
power
to the
instrument
by depressing
the
front
panel
POWER pushbutton.
d
Install
paper
(either
fan-fold
or
roll-type
as
in
preceeding
paragraphs).
d)
Locate
the
arrow
on the
front
of
printer
mechanism.
e)
Feed paper
under
the
clip,
over
the
arrow,
and
into
printer
mechanism
as shown
in
Figure
5.
f)
Depress
PAPER FEED pushbutton
until
printer
begins
to
pull
paper
through
mech-
ansim.
g)
As the
paper
appears
at
the
top
of
printer,
guide
the
paper
under
the
cutting
bar.
h)
Allow
about
2 extra
inches
of
paper
to
feed,
then
release
PAPER FEED button.
i)
Tear
off
paper
flush
with
cutting
bar.
j)
Replace
front
panel
by inserting
right
side
and snapping
into
place.
k)
Test
for
smooth
paper
advance
by depressing
PAPER FEED button
until
a few
inches
of
paper
are
advanced.
b.
Ribbon
Replacemerit.
I.
Pull
out
front
panel
by grasping
handle
on front
panel.
2.
On the
printer
mechanism,
locate
and,push
down
the
Detecting
Lever
of
both
spool
shafts
(see
Figure
5).
3.
Carefully
remove
old
ribbon
spools
from
shafts.
4.
Remove old
ribbon
from
feed
guides
and from
under
hammer.
5.
Separate
the
new ribbon
spools
and
lay
them on a flat
surface
with
their
"finger"
side
down.
6.
Refer
to
Figure
6 and ensure
that
the
new ribbon
is
properly
threaded
on the
spools.
7.
On the
printer
mechanism,
locate
and push
down
the
Detecting
Lever
on left
hand
spool
shaft,
slide
the
spool
onto
the
shaft
making
note
of
the
proper
threading
direc-
tion
shown
in Figure
6.
a.
Unwind
6 or 0 inches
of
ribbon
from
the
remaining
spool,
if
necessary,
and posi-
tion
the
ribbon
over
the
feed
guides
as shown
in
Figure
6.
9.
Depress
the
detecting
lever
on the
empty
spool
shaft
and slip
the
second
spool
onto
the
shaft.
Make sure
that
there
are
no twists
in
the
ribbon.
c.
Cleaning
of
Paper-Feed
Compartment.
Periodic
cleaning
of
Paper-feed
compartment
is
recommended
to
remove
paper
cuttings
which
may accumulate.
Suggested
cleaning
inter-
val
is after
printing
10 rolls
or
20 fan-fold
packs
or every
90 days.
I.
Apply
a slight
downward
pressure
on the
cutting
bar
to unlock,
then
pull
down.
2.
Remove the
plate
behind
the
cutting
bar
to gain
access
to
the
printer
drum
and
paper
feed
mechanism.
3.
Clean
mechanism
using
brush.
4.
Replace
plate.
5.
Snap cutting
bar
back
into
place.
6-2
AA
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