To
clean the inside
of
the printer, use a soft
brush
to
whisk
lint and
dust
away
from
the
print
head area, being careful
not
to
damage
any
of
the cables
and
pulleys.
Do
not
dust the circuit board area.
The
outside
of
the
printer
case can be cleaned
when
needed
with
a
damp
rag and alcohol.
When
you're
finished, reverse the process above to reassemble the
printer.
RIBBON
CARTRIDGE
The
inked
ribbon
in
the cartridge
is
a
continuous
loop and will
print
about
two
million characters before needing replacement.
When
printed
characters begin to appear faint, it
is
a sign to replace
the
ribbon
cartridge.
Replacing the
ribbon
is
a simple
matter
of
snapping
out
the old
cartridge and replacing it
with
a
new
one. Before
removing
the old
cartridge,
however,
always
turn
off
the
power
and slide the
print
head to the left edge to avoid damage to the
print
head cable. See
the ribbo,:! installation section in
Chapter
1 for details.
THE
PRINT
HEAD
The
print
head has a
very
long
life,
printing
as
many
as
100 million
characters before it
shows
any signs
of
wear.
You
will
know
that it
needs replacement
when
printed characters are faint even
with
a
new
ribbon
cartridge.
The
MPS
1200
is
designed so that
you
do
not
have to get inside the
printer
to change the
print
head.
Follow
these simple steps to
replace the
print
head:
1.
Turn
the
power
off
and
disconnect the
power
cable.
2.
Remove
the
printer
cover
and the
ribbon
cartridge.
3.
Locate the
print
head to the
most
left position and its connection
as
shown
in
Figure A-2. Grasp the cable and the plastic rein-
forcer
that
covers it and gently pull the cable free
from
the
connector.
A-3
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