The
following
illustration
shows
the
locations
of
the
power-supply
LEDs.
AC power LED
DC power LED
The
following
table
describes
the
problems
that
are
indicated
by
various
combinations
of
the
power-supply
LEDs
and
the
power-on
LED
on
the
operator
information
panel
and
suggested
actions
to
correct
the
detected
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
Chapter
3,
“Parts
listing,
Type
7979
and
1914
server,”
on
page
79
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.
Power-supply
LEDs
Operator
information
panel
power-on
LED
Description
Action
AC
DC
Off
Off
Off
No
power
to
the
server,
or
a
problem
with
the
ac
power
source.
1.
Check
the
ac
power
to
the
server.
2.
Make
sure
that
the
power
cord
is
connected
to
a
functioning
power
source.
3.
Remove
one
power
supply
at
a
time.
Lit
Off
Off
DC
source
power
problem.
1.
Remove
one
power
supply
at
a
time.
2.
View
the
system
error
logs
(see
“Error
logs”
on
page
26).
Lit
Lit
Off
Standby
power
problem.
1.
View
the
system
error
logs
(see
“Error
logs”
on
page
26).
2.
Remove
one
power
supply
at
a
time.
3.
Replace
the
power
backplane.
Lit
Lit
Lit
The
power
is
good.
No
action
is
necessary.
Diagnostic
programs,
messages,
and
error
codes
The
diagnostic
programs
are
the
primary
method
of
testing
the
major
components
of
the
server.
As
you
run
the
diagnostic
programs,
text
messages
and
error
codes
are
displayed
on
the
screen
and
are
saved
in
the
test
log.
A
diagnostic
text
message
or
error
code
indicates
that
a
problem
has
been
detected;
to
determine
what
action
you
should
take
as
a
result
of
a
message
or
error
code,
see
the
table
in
“Diagnostic
error
codes”
on
page
56.
54
IBM
System
x3650
Type
7979
and
1914:
Problem
Determination
and
Service
Guide
Содержание System x3650 Type 7979
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