4.
Exchange
the
FRU
containing
the
HSL
port
on
the
failed
link
in
the
other
system
unit.
If
the
error
was
cleared
up
by
exchanging
the
HSL
port
on
the
failed
link,
5.
If
you
are
working
on
a
system
Model
800,
810,
825,
870,
or
890,
then
use
symbolic
FRU
For
all
other
systems,
use
symbolic
FRU
to
replace
other
cable
related
items
that
may
be
on
either
frame,
such
as
interposer
cards
and
cable
wraps.
If
the
error
was
cleared
up
by
exchanging
these
items,
go
to
6.
If
the
error
still
persists,
call
your
next
level
of
support
for
further
instruction.
The
port
on
one
end
of
the
failed
link
is
in
a
system
unit
and
the
port
on
the
other
end
is
in
an
I/O
tower:
1.
Switch
the
two
bus
cables
on
the
I/O
tower’s
failed
port,
so
that
the
cable
that
was
connected
to
port
1
will
now
be
in
port
0,
and
the
cable
that
was
connected
to
port
0
will
now
be
in
port
1.
Attention:
You
must
fully
connect
the
cable
and
tighten
the
connector’s
screws
within
30
seconds
of
when
the
cable
makes
contact
with
the
port.
Otherwise,
the
link
will
fail
and
you
must
disconnect
and
reconnect
again.
Also,
if
the
connector
screws
are
not
tightened,
errors
will
occur
on
the
link
and
it
will
fail.
2.
Refresh
the
port
status
for
the
first
failing
resource
by
doing
the
subtask
in
this
document,
then
continue
with
the
next
step.
3.
If
the
port
on
the
system
unit
that
failed
is
now
working,
use
the
symbolic
FRU
to
exchange
the
HSL
I/O
bridge
card
in
the
I/O
tower.
Go
to
4.
Switch
the
cables
back
to
their
original
positions.
Attention:
You
must
fully
connect
the
cable
and
tighten
the
connector’s
screws
within
30
seconds
of
when
the
cable
makes
contact
with
the
port.
Otherwise,
the
link
will
fail
and
you
must
disconnect
and
reconnect
again.
Also,
if
the
connector
screws
are
not
tightened,
errors
will
occur
on
the
link
and
it
will
fail.
5.
Exchange
the
cable
between
the
two
ports
on
the
failed
link.
If
the
error
was
cleared
up
by
exchanging
the
cable,
go
to
6.
Exchange
the
HSL
FRU
that
contains
the
failing
port
in
the
system
unit.
If
the
error
was
cleared
up
by
exchanging
the
HSL
port
on
the
failed
link,
go
to
7.
If
you
are
working
on
a
system
Model
800,
810,
825,
870,
or
890,
then
use
symbolic
FRU
For
all
other
systems,
use
the
symbolic
FRU
to
replace
other
cable-related
items
that
may
be
on
either
frame,
such
as
interposer
cards
and
cable
wraps.
If
the
error
was
cleared
up
by
exchanging
these
items,
go
to
If
the
error
still
has
not
cleared
up,
call
your
next
level
of
support
for
further
instructions.
The
ports
on
both
ends
of
the
failed
link
are
in
an
I/O
tower:
1.
Switch
the
two
bus
cables
on
the
first
I/O
tower’s
failed
port
so
that
the
cable
that
was
connected
to
port
1
will
now
be
in
port
0,
and
the
cable
that
was
connected
to
port
0
will
now
be
in
port
1.
Attention:
You
must
fully
connect
the
cable
and
tighten
the
connector’s
screws
within
30
seconds
of
when
the
cable
makes
contact
with
the
port.
Otherwise,
the
link
will
fail
and
you
must
disconnect
and
reconnect
again.
Also,
if
the
connector
screws
are
not
tightened,
errors
will
occur
on
the
link
and
it
will
fail.
2.
Refresh
the
port
status
for
the
first
failing
resource
by
doing
the
subtask
in
this
document,
then
continue
with
the
next
step.
3.
If
the
port
on
the
I/O
tower
on
which
you
did
NOT
switch
cables
is
now
working,
use
the
symbolic
FRU
to
exchange
the
HSL
I/O
bridge
card
in
the
I/O
tower
on
which
you
DID
switch
the
cables.
Go
to
4.
Switch
the
cables
back
to
their
original
positions.
Attention:
You
must
fully
connect
the
cable
and
tighten
the
connector’s
screws
within
30
seconds
of
when
the
cable
makes
contact
with
the
port.
Otherwise,
the
link
will
fail
and
you
must
disconnect
and
reconnect
again.
Also,
if
the
connector
screws
are
not
tightened,
errors
will
occur
on
the
link
and
it
will
fail.
80
iSeries:
iSeries
Server
270,
800,
810,
820,
825,
830,
840,
870,
890,
SB2,
and
SB3
Hardware
Problem
Analysis
and
Isolation
