b.
Disconnect
one
of
the
I/O
devices
(tape,
diskette,
optical,
or
disk
units)
you
connected
in
step
10
(See
page
c.
Power
on
the
system.
Does
a
power
reference
code
occur?
v
No:
Exchange
the
last
I/O
device
you
disconnected
in
this
step.
See
the
for
the
model
you
are
working
on.
This
ends
the
procedure.
v
Yes:
Continue
with
the
next
step.
12.
Have
you
disconnected
all
of
the
I/O
devices?
v
Yes:
Install
all
parts
you
removed
in
this
procedure
and
go
to
the
This
ends
the
procedure.
v
No:
Repeat
step
11
(See
page
Power
PIP5:
For
use
by
authorized
service
providers.
A
power
supply
overcurrent/load
fault
is
occurring.
Read
the
information
for
important
safety
information
before
servicing
the
system.
1.
If
the
system
has
logical
partitions,
perform
this
procedure
only
from
the
Primary
partition’s
console
and
the
system
control
panel.
To
determine
if
the
system
has
logical
partitions,
go
to
before
continuing
with
this
procedure.
2.
Perform
the
following:
a.
Disconnect
all
the
I/O
devices
(tape,
diskette,
optical,
and
disk
units)
from
the
unit
you
are
working
on
by
sliding
them
partially
out
of
the
unit
see
the
b.
Remove
and
label
all
cards
installed
except
the
processor
and
memory
cards.
c.
Reconnect
the
ac
power
cable
to
the
unit
you
are
working
on.
d.
Power
on
the
system.
Does
a
power
reference
code
occur?
v
Yes
:
Continue
with
the
next
step.
v
No
:
Go
to
step
10
(See
page
3.
Perform
the
following:
a.
Power
off
the
system.
b.
Remove
from
the
system
one
of
the
air
moving
devices
(AMDs)
that
was
not
previously
removed
during
this
procedure.
(Disregard
an
AMD
SRC
if
it
occurs
during
this
step.)
c.
Power
on
the
system.
Does
a
power
reference
code
occur?
v
Yes
:
Continue
with
the
next
step.
v
No
:
The
AMD
you
removed
in
this
step
is
the
failing
item.
This
ends
the
procedure.
4.
Have
you
removed
all
of
the
AMDs
one
at
a
time?
v
No
:
Perform
the
following:
a.
Power
off
the
system.
b.
Install
the
AMD
that
was
removed
in
step
3
(See
page
to
its
original
locations.
c.
Repeat
step
3
(See
page
v
Yes
:
Install
all
of
the
AMDs
and
continue
with
the
next
step.
5.
Perform
the
following:
a.
Power
off
the
system.
158
iSeries:
iSeries
Server
270,
800,
810,
820,
825,
830,
840,
870,
890,
SB2,
and
SB3
Hardware
Problem
Analysis
and
Isolation