Note:
See
“System
replaceable
units”
on
page
144
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
Diagnostics
panel
lit
LED
FRU/action
NMI
(non-maskable
interrupt
occurred)
v
Check
the
system-error
log
and
the
BMC
log
for
information
about
the
error.
S_ERR
(soft
error)
1.
Restart
the
server.
2.
Update
firmware
and
adapter
drivers.
3.
Check
the
POST
error
log
for
information.
4.
System
board.
TEMP
(temperature
exceeded
a
threshold
level)
Note:
The
FAN
LED
might
also
be
lit.
1.
Make
sure
that
all
fans
are
operating
correctly.
2.
Ambient
temperature
must
be
within
normal
operating
specifications;
see
“Features
and
specifications”
on
page
3.
3.
System
board.
FAN
(a
fan
failed
or
is
operating
slowly)
Note:
The
TEMP
LED
might
also
be
lit.
1.
Check
individual
fan
LEDs.
2.
Failing
fan.
3.
System
board.
MEM
(memory
failure
(LED
next
to
the
failing
DIMM
is
on))
1.
Run
Configuration/Setup
Utility
program
and
make
sure
DIMMs
are
correctly
configured.
2.
Failing
DIMM.
3.
System
board
CPU
(microprocessor
failure
(LED
next
to
the
failing
microprocessor
is
on))
1.
Failing
microprocessor
2.
System
board
PCI
(PCI
error;
LED
on
system
board
at
failing
adapter
will
also
be
lit)
1.
Failing
adapter.
2.
System
board.
VRM
(VRM
or
integrated
VRD
failed
(LED
next
to
the
failing
VRM
is
on))
1.
Remove
ac
power
from
the
server
for
20
seconds,
then
reconnect
power
and
restart
the
server.
2.
If
LED
next
to
VRM
is
lit,
replace
pluggable
VRM.
3.
If
LED
next
to
integrated
VRD
is
lit,
replace
the
system
board.
DASD
/RAID
(hard
disk
drive
failure
(check
drive
LED)
or
RAID
failure
(check
LEDs)
Note:
This
LED
will
also
be
lit
when
a
hard
disk
drive
is
removed
from
the
server.
1.
Be
sure
the
fans
are
operating
correctly
and
the
airflow
is
good
so
that
the
drive
is
not
overheating.
2.
Hard
disk
drive.
3.
SCSI
backplane.
4.
System
board.
SERVICE
PROCESSOR
BUS
(service
processor
error)
1.
Remove
ac
power
from
the
server
for
20
seconds,
then
reconnect
power
and
restart
the
server.
2.
System
board.
EVENT
LOG
(system
warning
has
occurred)
v
Check
system-error
log
and
BMC
log
for
information
about
the
error.
CPU/VRM
mismatch
(microprocessor
does
not
match
VRM
or
VRD)
1.
Install
a
matched
microprocessor
and
VRM.
2.
System
board
Chapter
6.
Symptom-to-FRU
index
115
Summary of Contents for xSeries 236 8841
Page 1: ...xSeries 236 Type 8841 Hardware Maintenance Manual and Troubleshooting Guide...
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Page 173: ...Appendix B Safety information 163...
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