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
8878
and
8879,”
on
page
23
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.
Make
sure
that
the
microprocessor
tray
is
connected
to
the
power
backplane.
2.
Remove
one
power
supply
at
a
time.
3.
View
the
system-error
log
(see
“Error
logs”
on
page
71).
Lit
Lit
Off
Standby
power
problem
1.
View
the
system-error
log
(see
“Error
logs”
on
page
71).
2.
Remove
one
power
supply
at
a
time.
3.
(Trained
service
technician
only)
Replace
the
power
backplane.
Lit
Lit
Flashing
System
power-on
problem
1.
View
the
system-error
log
(see
“Error
logs”
on
page
71).
2.
Press
the
power-control
button
on
the
operator
information
panel.
3.
(Trained
service
technician
only)
Use
the
force-power-on
jumper
as
a
debugging
aid
(see
“I/O
board
internal
connectors
and
jumpers”
on
page
8)
to
determine
whether
the
information
panel
switch
and
cable
are
faulty.
4.
Remove
the
optional
Remote
Supervisor
Adapter
II
SlimLine,
and
try
to
turn
on
the
server.
5.
Reseat
the
microprocessor
tray.
6.
(Trained
service
technician
only)
Replace
the
microprocessor
tray.
Lit
Lit
Lit
The
power
is
good.
No
action.
Chapter
5.
Diagnostics
111
Summary of Contents for System x3950 Type 8878
Page 2: ......
Page 185: ...Japanese Voluntary Control Council for Interference VCCI statement Appendix B Notices 169...
Page 191: ......
Page 192: ...Part Number 31R1891 Printed in USA 1P P N 31R1891...