v
Follow
the
suggested
actions
in
the
order
in
which
they
are
listed
in
the
Action
column
until
the
problem
is
solved.
v
See
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.
System-error
log
message
Action
System
shutoff
due
to
board
over
temperature.
1.
Make
sure
that
the
fans
have
good
airflow
and
are
not
obstructed.
2.
(Trained
service
technician
only)
Reseat
the
system
board.
3.
(Trained
service
technician
only)
Replace
the
system
board.
System
under
recommended
voltage
on
continuous
+5v.
1.
Reseat
the
following
components:
a.
(Trained
service
technician
only)
System
board
b.
(Trained
service
technician
only)
Power
supply
2.
(Trained
service
technician
only)
Replace
the
system
board.
System
under
recommended
voltage
for
+12v.
1.
Reseat
the
following
components:
a.
(Trained
service
technician
only)
System
board
b.
(Trained
service
technician
only)
Power
supply
2.
(Trained
service
technician
only)
Replace
the
system
board.
System
under
recommended
voltage
on
+2.5v.
1.
Reseat
the
following
components:
a.
(Trained
service
technician
only)
System
board
b.
(Trained
service
technician
only)
Power
supply
2.
(Trained
service
technician
only)
Replace
the
system
board.
System
shut
off
due
to
system
board
under
temperature.
1.
Make
sure
that
the
fans
have
good
airflow
and
are
not
obstructed.
2.
(Trained
service
technician
only)
Reseat
the
system
board.
3.
(Trained
service
technician
only)
Replace
the
system
board.
System
x
started
a
RS485
connection
with
us
Information
only.
We
started
a
RS485
connection
with
remote
system
x
Information
only.
We
will
retry
sending
alert
ID
x
;
when
accepted
by
a
remote
system,
it
will
have
a
different
ID
Information
only.
Windows
blue
screen
has
been
captured
Information
only.
Solving
power
problems
Power
problems
can
be
difficult
to
solve.
For
example,
a
short
circuit
can
exist
anywhere
on
any
of
the
power
distribution
buses.
Usually,
a
short
circuit
will
cause
the
power
subsystem
to
shut
down
because
of
an
overcurrent
condition.
To
diagnose
a
power
problem,
use
the
following
general
procedure:
1.
Turn
off
the
server
and
disconnect
all
ac
power
cords.
2.
Check
for
loose
cables
in
the
power
subsystem.
Also
check
for
short
circuits,
for
example,
if
a
loose
screw
is
causing
a
short
circuit
on
a
circuit
board.
108
IBM
xSeries
306m
Types
8849
and
8491:
Problem
Determination
and
Service
Guide
Summary of Contents for 306m - eServer xSeries - 8849
Page 1: ...IBM xSeries 306m Types 8849 and 8491 Problem Determination and Service Guide ...
Page 2: ......
Page 3: ...IBM xSeries 306m Types 8849 and 8491 Problem Determination and Service Guide ...
Page 8: ...vi IBM xSeries 306m Types 8849 and 8491 Problem Determination and Service Guide ...
Page 143: ......
Page 144: ... Part Number 31R1183 Printed in USA 1P P N 31R1183 ...
