c.
Set
all
the
BPR
on/off
switches
on
this
BPA
to
the
on
position
(to
the
left),
and
continue
with
the
next
step.
2.
Are
there
any
BPDs
you
have
not
checked
yet?
v
Yes:
Repeat
step
1
(See
page
.
v
No:
Continue
with
the
next
step.
3.
This
problem
can
also
be
caused
by
any
bulk
power
regulator
(BPR)
plugged
into
the
failing
BPA.
The
system
has
up
to
two
BPRs
depending
on
the
system
configuration,
and
each
BPR
on
the
failing
BPA
must
be
checked
independently.
The
following
steps
check
all
the
BPRs
on
the
side
of
the
BPA
(A
or
B)
referenced
by
the
error
code
that
sent
you
to
this
procedure.
Are
there
any
BPRs
you
have
not
checked
yet?
v
Yes:
Go
to
step
5
(See
page
.
v
No:
Continue
with
the
next
step.
4.
Exchange
the
following
field
replaceable
units
(FRUs)
one
at
a
time:
v
Bulk
power
controller
(BPC)
on
the
side
referenced
by
the
error
code
that
sent
you
to
this
procedure.
See
symbolic
FRU
v
Bulk
power
enclosure
(BPE)
on
the
side
referenced
by
the
error
code
that
sent
you
to
this
procedure.
See
for
the
part
number
and
a
link
to
the
remove
and
replace
procedure.
After
each
FRU
is
exchanged,
is
the
error
code
that
sent
you
to
this
procedure
still
reported?
v
No:
The
problem
has
been
corrected.
See
This
ends
the
procedure.
v
Yes:
Exchange
the
next
FRU
in
the
list.
If
all
the
FRUs
have
been
exchanged,
then
call
your
next
level
of
support
for
assistance.
This
ends
the
procedure.
5.
Be
sure
you
are
working
on
the
side
of
the
BPA
(A
or
B)
referenced
by
the
error
code
that
sent
you
to
this
procedure.
FRUs
on
the
operating
side
of
the
BPA
(with
BPC
GOOD
LED
on)
must
not
be
disturbed
during
this
procedure.
Perform
the
following:
a.
Turn
the
BPR
on/off
switch
to
the
off
position
(to
the
right)
on
one
BPR.
b.
If
there
is
more
than
one
BPR
left
to
be
checked,
start
with
the
uppermost
unchecked
BPR.
Unplug
and
make
a
note
of
the
BPR
to
be
checked,
and
carefully
pull
it
approximately
25
mm
(1
inch)
away
from
the
backplane
without
unplugging
any
cables.
See
symbolic
FRU
Does
the
BPC
GOOD
LED
on
the
BPC
come
on
and
stay
on?
v
No:
Plug
in
the
BPR
and
set
the
BPR
on/off
switch
to
the
ON
position
(to
the
left).
Go
to
step
3
(See
page
.
v
Yes:
Replace
the
BPR
that
is
currently
unplugged.
Go
to
step
6
(See
page
.
6.
Is
the
error
code
that
sent
you
to
this
procedure
still
reported?
v
No:
The
problem
has
been
corrected.
See
This
ends
the
procedure.
v
Yes:
Call
your
next
level
of
support
for
assistance.
This
ends
the
procedure.
MAPPWR-5:
An
air
flow
loss
has
been
detected
For
use
by
authorized
service
providers.
Note:
Read
the
Danger
and
caution
notices
in
the
introduction
before
performing
this
procedure.
1.
Check
the
following
air
inlets
and
outlets
for
blockage
or
obstruction:
v
Front
and
rear
frame
door
openings
(except
for
acoustical
foam)
v
Bulk
power
assembly
(BPA)
cage:
370
iSeries:
iSeries
Server
270,
800,
810,
820,
825,
830,
840,
870,
890,
SB2,
and
SB3
Hardware
Problem
Analysis
and
Isolation