7.
Look
for
a
build
up
of
dirt
on
the
plastic
rollers
3
inside
the
ball
cage.
This
build
up
usually
appears
as
a
stripe
running
across
the
middle
of
the
rollers.
8.
If
the
rollers
are
dirty,
clean
them
by
using
a
cotton
swab
soaked
in
isopropyl
(rubbing)
alcohol.
Turn
the
rollers
with
your
finger
and
continue
swabbing
them
until
all
the
dirt
is
removed.
Be
sure
the
rollers
are
still
centered
in
their
channels
after
you
clean
them.
9.
Remove
any
fibers
from
the
swab
that
might
be
remaining
on
the
rollers.
10.
Replace
the
ball
and
the
retainer
ring.
Twist
the
retainer
ring
to
the
locked
position.
11.
Reconnect
the
mouse
cable
to
the
computer.
12.
Turn
your
computer
back
on.
Chapter
7.
Troubleshooting
and
diagnostics
59
Summary of Contents for THINKCENTRE 9636
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