IBM x3500 Installation Guide - Page 93

Intermittent, problems

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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 A hard disk drive passes the diagnostic Fixed Disk Test, but the problem remains. Run the diagnostic SCSI Fixed Disk Test (see Problem Determination and Service Guide on the IBM System x Documentation CD). Note: This test is not available on servers that have RAID arrays or servers that have SATA hard disk drives. Intermittent 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 A problem occurs only occasionally and is difficult to diagnose. Make sure that: v All cables and cords are connected securely to the rear of the server and attached devices. v When the server is turned on, air is flowing from the rear of the server at the fan grille. If there is no airflow, the fan is not working. This can cause the server to overheat and shut down. If the problem remains, call for service. Chapter 5. Solving problems 79

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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
A
hard
disk
drive
passes
the
diagnostic
Fixed
Disk
Test,
but
the
problem
remains.
Run
the
diagnostic
SCSI
Fixed
Disk
Test
(see
Problem
Determination
and
Service
Guide
on
the
IBM
System
x
Documentation
CD).
Note:
This
test
is
not
available
on
servers
that
have
RAID
arrays
or
servers
that
have
SATA
hard
disk
drives.
Intermittent
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
A
problem
occurs
only
occasionally
and
is
difficult
to
diagnose.
Make
sure
that:
v
All
cables
and
cords
are
connected
securely
to
the
rear
of
the
server
and
attached
devices.
v
When
the
server
is
turned
on,
air
is
flowing
from
the
rear
of
the
server
at
the
fan
grille.
If
there
is
no
airflow,
the
fan
is
not
working.
This
can
cause
the
server
to
overheat
and
shut
down.
If
the
problem
remains,
call
for
service.
Chapter
5.
Solving
problems
79