IBM 8428 Personal Computer User Manual


 
installed.
5.
Carefully
note
the
location
of
all
cable
connections
on
the
system
board.
It
will
be
necessary
to
reconnect
them
properly
after
installing
the
new
system
board
assembly.
Note:
Note
the
cable
routing.
It
is
important
to
route
the
cables
the
same
way
when
installing
a
new
system
board.
6.
Disconnect
the
diskette
drive
cable
from
the
system
board
by
sliding
the
plastic
cable
retainer
upward
to
release
the
cable.
7.
Disconnect
all
other
cables
connected
to
the
system
board.
See
“Identifying
parts
on
the
system
board”
on
page
3
to
locate
the
cables.
8.
Remove
the
power
supply.
Go
to
“Removing
and
replacing
the
power
supply”
on
page
3.
9.
Remove
the
six
screws
that
secure
the
system
board
to
the
chassis.
8
Hardware
Removal
and
Replacement
Guide