Lenovo 6446 User Manual
Page 88
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.
Symptom
Action
The
power-control
button
does
not
work,
and
the
reset
button
does
work
(the
server
does
not
start).
Note:
The
power-control
button
will
not
function
until
20
seconds
after
the
server
has
been
connected
to
power.
1.
Make
sure
that:
v
The
power
cords
are
correctly
connected
to
the
server
and
to
a
working
power
source.
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.
See
the
documentation
that
comes
with
each
dc
power
supply.
v
The
type
of
memory
that
is
installed
is
correct.
v
The
LEDs
on
the
power
supply
do
not
indicate
a
problem.
v
The
microprocessors
are
installed
in
the
correct
sequence.
2.
Make
sure
that
the
power-control
button
and
the
reset
button
are
working
correctly:
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.
See
the
documentation
that
comes
with
each
dc
power
supply.
a.
Disconnect
the
server
power
cords.
b.
Reseat
the
operator
information
panel
assembly
cable.
c.
Reconnect
the
power
cords.
d.
Press
the
power-control
button
to
restart
the
server.
If
the
button
does
not
work,
replace
the
operator
information
panel
assembly.
e.
Press
the
reset
button
(on
the
light
path
diagnostics
panel)
to
restart
the
server.
If
the
button
does
not
work,
replace
the
operator
information
panel
assembly.
3.
If
you
just
installed
an
optional
device,
remove
it,
and
restart
the
server.
If
the
server
now
starts,
you
might
have
installed
more
devices
than
the
power
supply
supports.
4.
Reseat
the
power
backplane
and
restart
the
server.
5.
Replace
the
power
backplane
and
restart
the
server.
6.
Replace
the
following
components
one
at
a
time,
in
the
order
shown,
restarting
the
server
each
time:
a.
Power
supplies
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
the
dc
power
supply.
See
the
documentation
that
comes
with
each
dc
power
supply.
b.
(Trained
service
technician
only)
System
board
7.
See
“Solving
power
problems”
and
“Solving
undetermined
problems”
in
the
Hardware
Maintenance
Manual
.
74
ThinkServer
RD120
Types
6444,
6445,
6446,
and
6447:
Installation
Guide