010 Backplane
Each
2-
and
4-slot DIO
adaptor
has
a
backplane
for
cards
to
connect
to.
When
this
backplane
needs
to
be
replaced,
here's
what
you
need
to
do.
Remove these parts first.
1.
Power
cord
after
turning
the
unit
off.
2.
Power
supply
access cover.
3.
Top
cover.
4.
DIG
adaptor.
Procedures
CAUTION
Note the motherboard DIO-II and backplane DIO connectors each
ribbon cable is attached to. Mark the ribbon cables, if necessary to
help you remember.
When replacing the backplane, these ribbon cables must
be
recon-
nected correctly. Otherwise, smoke, fire, and brimstone may surely
emit from this marvelous Hewlett-Packard product. So, please watch
out and put it back together right.
1.
Note
what
ribbon
cable
is
attached
to
the
motherboard
and
backplane
connectors,
then
remove
the
ribbon
cables
from
the
backplane.
2. Remove
the
screws
holding
the
backplane
PC
board
to
the
card
guides.
The
number
of
screws will differ
depending
on
the
specific
backplane.
Note
If
the
DIG
backplane
is
installed
with
the
ribbon
cables
hooked
up
to
the
backplane's
top
two
connectors
and
a DIG
card
is
installed,
the
card
won't
work.
There
are
no
power
traces
from
the
top
backplane
connectors
to
the
DIG
card
slots. Ribbon cables must connect only to
the bottom backplane connectors.
3. To
install
a
backplane,
reverse
these
steps.
Assembly
Replacement
47
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