Diagnosing problems using light path diagnostics, Light path diagnostics leds, Diagnosing – Lenovo 6446 User Manual
Page 92: Problems, Using, Light, Path, Diagnostics, Leds
Press
the
reset
button
to
reset
the
server
and
run
the
power-on
self-test
(POST).
You
might
have
to
use
a
pen
or
the
end
of
a
straightened
paper
clip
to
press
the
button.
The
server
is
designed
so
that
LEDs
remain
lit
when
the
server
is
connected
to
a
power
source
but
is
not
turned
on,
provided
that
the
power
supply
is
operating
correctly.
This
feature
helps
you
to
isolate
the
problem
when
the
operating
system
is
shut
down.
Diagnosing
problems
using
light
path
diagnostics
LEDs
in
two
locations
on
the
server
are
available
to
help
you
diagnose
problems
that
might
occur
during
installation.
Use
them
in
the
following
order:
1.
Light
path
diagnostics
panel
-
Look
at
this
panel
first.
If
a
system
error
has
occurred,
the
system-error
LED
on
the
front
of
the
light
path
diagnostics
drawer
is
lit.
Slide
the
latch
to
the
left
on
the
front
of
the
operator
information
panel
to
access
the
light
path
diagnostics
panel.
Note
any
LEDs
that
are
lit,
and
then
close
the
drawer.
2.
LEDs
on
the
system
board
-
To
identify
the
component
that
is
causing
the
error,
note
the
lit
LED
on
or
beside
the
component.
Light
path
diagnostics
LEDs
The
following
table
describes
the
LEDs
on
the
light
path
diagnostics
panel,
the
problems
that
they
indicate,
and
actions
to
solve
the
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
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
None,
but
the
system-
error
LED
is
lit.
An
error
has
occurred
and
cannot
be
diagnosed,
or
the
Advanced
System
Management
(ASM)
processor
on
the
Remote
Supervisor
Adapter
II
SlimLine
has
failed.
The
error
is
not
represented
by
a
light
path
diagnostics
LED.
Use
the
Configuration/Setup
Utility
program
to
check
the
system-error
log
for
information
about
the
error.
OVER
SPEC
The
power
supplies
are
using
more
power
than
their
maximum
rating.
1.
Remove
optional
devices
from
the
server.
2.
Replace
the
failing
power
supply.
Attention:
In
a
dc
power
environment,
only
trained
service
personnel
other
than
Lenovo
service
technicians
are
authorized
to
connect
or
disconnect
power
to
the
dc
power
supply
and
to
remove
and
install
a
dc
power
supply.
See
the
documentation
that
comes
with
each
dc
power
supply.
PS
1
The
power
supply
in
bay
1
has
failed.
Attention:
In
a
dc
power
environment,
only
trained
service
personnel
other
than
Lenovo
service
technicians
are
authorized
to
connect
or
disconnect
power
to
the
dc
power
supply
and
to
remove
and
install
a
dc
power
supply.
See
the
documentation
that
comes
with
each
dc
power
supply.
1.
Make
sure
that
the
power
supply
is
correctly
seated.
2.
Replace
the
failed
power
supply.
78
ThinkServer
RD120
Types
6444,
6445,
6446,
and
6447:
Installation
Guide