b.
Power
supply
in
location
P01
This
ends
the
procedure.
v
No
:
Continue
with
the
next
step.
3.
Is
this
a
Model
270
system
unit,
with
processor
feature
22A7,
22A8,
22AA,
22AB,
2423,
2424?
v
Yes
:
See
Replace
the
power
supply
in
location
P01.
Be
sure
to
IPL
in
SLOW
OVERRIDE
mode
after
the
replacement.
This
ends
the
procedure.
v
No
:
Continue
with
the
next
step.
4.
This
is
a
Model
820.
See
Replace
the
following
FRUs
in
order
one
at
a
time
until
the
problem
is
resolved.
Note:
Be
sure
to
IPL
in
SLOW
OVERRIDE
mode
after
each
replacement.
a.
Power
supply
in
location
P01
b.
Power
supply
in
location
P02
c.
Power
supply
in
location
P03
This
ends
the
procedure.
5.
Is
this
system
a
Model
830,
SB2
system
unit
and
FC
9074?
v
No
:
Continue
with
the
next
step.
v
Yes
:
See
Replace
the
following
FRUs
in
order
one
at
a
time
until
the
problem
is
resolved.
See
the
Note:
Be
sure
to
IPL
in
SLOW
OVERRIDE
mode
after
each
replacement.
a.
Processor
regulator
card
in
location
M01
in
the
830
system
unit.
b.
Power
supply
in
location
PP1
in
the
830
system
unit.
c.
Power
supply
in
location
PP2
in
the
830
system
unit.
6.
This
is
a
Model
840,
SB3
system
unit
and
FC
9079
base
I/O
tower.
See
Replace
the
following
FRUs
in
order
one
at
a
time
until
the
problem
is
resolved.
See
the
Note:
Be
sure
to
IPL
in
SLOW
OVERRIDE
mode
after
each
replacement.
a.
Processor
regulator
card
in
location
M04
in
the
840
system
unit.
b.
Processor
regulator
card
in
location
M07
in
the
840
system
unit.
c.
Power
supply
in
location
P01
in
the
840
system
unit.
d.
Power
supply
in
location
P02
in
the
840
system
unit.
e.
Power
supply
in
location
P03
in
the
840
system
unit.
f.
Power
supply
in
location
P04
in
the
840
system
unit.
g.
Power
supply
in
location
P05
in
the
840
system
unit.
This
ends
the
procedure.
CHECK
For
use
by
authorized
service
providers.
If
the
attached
device
is
an
external
device,
do
the
following
before
exchanging
any
parts:
1.
Ensure
that
the
device
is
powered
on.
2.
Is
there
a
SCSI
interface
between
the
IOP/IOA?
v
No
:
Continue
with
the
next
step.
v
Yes
:
Perform
the
following:
–
If
an
interposer
is
required,
make
sure
that
it
is
connected
between
the
I/O
Processor
and
the
SCSI
cable.
Analyze
hardware
problems
319