IBM Type 7977 Manuale Utente
v
Follow
the
suggested
actions
in
the
order
in
which
they
are
listed
in
the
Action
column
until
the
problem
is
solved.
v
See
the
Problem
Determination
and
Service
Guide
on
the
IBM
System
x
Documentation
CD
to
determine
which
components
are
customer
replaceable
units
(CRU)
and
which
components
are
field
replaceable
units
(FRU).
v
If
an
action
step
is
preceded
by
“(Trained
service
technician
only),”
that
step
must
be
performed
only
by
a
trained
service
technician.
Symptom
Action
The
server
unexpectedly
shuts
down,
and
the
LEDs
on
the
operator
information
panel
are
not
lit.
See
the
Problem
Determination
and
Service
Guide
on
the
IBM
System
x
Documentation
CD.
Serial
port
problems
v
Follow
the
suggested
actions
in
the
order
in
which
they
are
listed
in
the
Action
column
until
the
problem
is
solved.
v
See
the
Problem
Determination
and
Service
Guide
on
the
IBM
System
x
Documentation
CD
to
determine
which
components
are
customer
replaceable
units
(CRU)
and
which
components
are
field
replaceable
units
(FRU).
v
If
an
action
step
is
preceded
by
“(Trained
service
technician
only),”
that
step
must
be
performed
only
by
a
trained
service
technician.
Symptom
Action
The
number
of
serial
ports
that
are
identified
by
the
operating
system
is
less
than
the
number
of
installed
serial
ports.
1.
Make
sure
that:
v
Each
port
is
assigned
a
unique
address
in
the
Configuration/Setup
Utility
program
and
none
of
the
serial
ports
is
disabled.
v
The
serial
port
adapter
(if
one
is
present)
is
seated
correctly.
2.
Reseat
the
serial
port
adapter.
3.
Replace
the
serial
port
adapter.
A
serial
device
does
not
work.
1.
Make
sure
that:
v
The
device
is
compatible
with
the
server.
v
The
serial
port
is
enabled
and
is
assigned
a
unique
address.
v
The
device
is
connected
to
the
correct
connector
(see
2.
Reseat
the
following
components:
a.
Failing
serial
device
b.
Serial
cable
c.
Remote
Supervisor
Adapter
II
SlimLine
(if
one
is
present)
3.
Replace
the
following
components
one
at
a
time,
in
the
order
shown,
restarting
the
server
each
time:
a.
Failing
serial
device
b.
Serial
cable
c.
Remote
Supervisor
Adapter
II
SlimLine
(if
one
is
present)
d.
(Trained
service
technician
only)
System
board
Chapter
5.
Solving
problems
87