Lenovo 3797 User Manual
Page 37
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
Hardware
Maintenance
Manual
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.
LED
Description
Action
CPU
When
only
the
CPU
LED
is
lit,
a
microprocessor
has
failed.
When
the
CPU
and
CNFG
LEDs
are
lit,
the
microprocessor
configuration
is
not
valid.
1.
Determine
whether
the
CNFG
LED
is
also
lit.
If
the
CNFG
LED
is
not
lit,
a
microprocessor
has
failed.
a.
Make
sure
that
the
failing
microprocessor,
which
is
indicated
by
a
lit
LED
on
the
system
board,
is
installed
correctly.
See
the
Hardware
Maintenance
Manual
for
information
about
installing
a
microprocessor.
b.
If
the
failure
remains,
call
service.
2.
If
the
CNFG
LED
is
lit,
then
an
invalid
microprocessor
configuration
has
occurred.
a.
Make
sure
that
the
microprocessors
are
compatible
with
each
other.
They
must
match
in
speed
and
cache
size.
To
compare
the
microprocessor
information,
run
the
Setup
utility
and
select
System
Information,
then
select
System
Summary,
and
then
select
Processor
Details.
b.
(Trained
service
technician
only)
Replace
an
incompatible
microprocessor.
c.
If
the
failure
remains,
call
for
service.
VRM
Reserved.
DASD
A
hard
disk
drive
error
has
occurred.
A
hard
disk
drive
has
failed
or
is
missing.
1.
Check
the
LEDs
on
the
hard
disk
drives
for
the
drive
with
a
lit
status
LED
and
reseat
the
hard
disk
drive.
2.
Reseat
the
hard
disk
drive
backplane.
3.
Remove
and
reinstall
the
hard
disk
drive
backplanes.
See
the
Hardware
Maintenance
Manual
for
information
about
removing
and
installing
a
hard
disk
drive
backplane.
4.
Replace
the
hard
disk
drive
backplane
for
the
failing
drive
or
drives.
5.
Call
for
service.
RAID
Reserved
BRD
An
error
has
occurred
on
the
system
board.
1.
Check
the
LEDs
on
the
system
board
to
identify
the
component
that
is
causing
the
error.
2.
Check
the
system-event
log
for
information
about
the
error.
3.
Replace
any
failed
or
missing
replaceable
components,
such
as
the
battery
or
PCI
riser-card
assembly.
4.
If
a
voltage
regulator
has
failed,
replace
the
system
board.
Chapter
4.
Server
controls,
LEDs,
and
power
21