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
parts
listing
in
the
Problem
Determination
and
Service
Guide
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.
Lit
light
path
diagnostics
LED
with
the
system-error
LED
also
lit
Description
Action
TEMP
A
system
temperature
or
component
has
exceeded
specifications.
Note:
A
fan
LED
might
also
be
lit.
1.
See
the
BMC
log
or
the
system-error
log
for
the
source
of
the
fault.
2.
Make
sure
that
the
airflow
of
the
server
is
not
blocked.
3.
If
a
fan
LED
is
lit,
reseat
the
fan.
4.
Replace
the
fan
for
which
the
LED
is
lit.
5.
Make
sure
that
the
room
is
neither
too
hot
nor
too
cold
see
“Environment”
in
6.
If
one
of
the
VRDs
indicates
“hot,”
ac
power
must
be
removed
before
dc
power
can
be
restored.
FAN
A
fan
has
failed
or
has
been
removed.
Note:
A
failing
fan
can
also
cause
the
TEMP
LED
to
be
lit.
1.
Reinstall
the
removed
fan.
2.
If
an
individual
fan
LED
is
lit,
replace
the
fan.
3.
Reseat
the
microprocessor
tray.
4.
(Trained
service
technician
only)
Replace
the
microprocessor
tray.
PCI
BRD
The
PCI
board
has
failed.
1.
(Trained
service
technician
only)
Reseat
the
PCI
board
assembly.
2.
(Trained
service
technician
only)
Replace
the
PCI
board
assembly.
CPU
BRD
The
microprocessor
tray
has
failed.
1.
Reseat
the
microprocessor
tray.
2.
(Trained
service
technician
only)
Replace
the
microprocessor
tray.
I/O
BRD
The
I/O
board
has
failed.
1.
Reseat
the
I/O
board.
2.
Replace
the
I/O
board.
Chapter
6.
Solving
problems
65
Summary of Contents for System x3850
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