d.
Power
supply
in
location
P03
e.
Memory
riser
card
in
location
M01
f.
Memory
Riser
card
in
location
M02
g.
System
unit
backplane
in
location
MB1
This
ends
the
procedure.
9.
This
is
a
Model
825.
See
Replace
the
following
FRUs
in
order
one
at
a
time
until
the
problem
is
resolved.
Be
sure
to
IPL
in
SLOW
OVERRIDE
mode
after
each
replacement.
a.
Processor
card
in
location
M02
(if
present)
b.
Memory
cards
on
the
processor
card
in
location
M02
(if
present
and
exchanging
the
processor
card
in
M02
corrected
the
problem)
c.
Processor
card
in
location
M01
(if
present)
d.
Memory
cards
on
the
processor
card
in
location
M02
(if
present
and
exchanging
the
processor
card
in
M01
corrected
the
problem)
e.
Processor
card
in
location
C13
f.
Memory
cards
on
the
processor
card
in
location
C13
(if
exchanging
the
processor
card
in
C13
corrected
the
problem)
g.
Power
supply
in
location
P01
h.
Power
supply
in
location
P02
i.
System
Backplane
Extender
in
location
MB1
j.
System
unit
backplane
in
location
MB1
This
ends
the
procedure.
10.
For
Models
830,
840,
SB2,
and
SB3:
Perform
the
following:
a.
Power
off
the
system
from
the
control
panel.
b.
Check
cable
connections
between
the
system
unit
and
the
base
I/O
tower.
c.
Reseat
cables
where
possible.
d.
Power
on
the
system.
Does
the
same
SRC
occur?
v
Yes
:
Continue
with
the
next
step.
v
No
:
Go
to
and
follow
the
service
actions
for
the
new
SRC.
This
ends
the
procedure.
11.
Perform
the
following:
a.
Power
off
the
system
from
the
control
panel.
b.
Remove
the
cables
and
connections
from
the
secondary
I/O
towers
so
that
HSL
ports
A0
and
A1
connect
only
the
base
I/O
tower
to
the
system
unit.
This
is
a
minimum
configuration
for
IPL.
Note:
The
connections
to
any
I/O
towers
other
than
those
connected
to
ports
A0
and
A1
should
not
affect
this
procedure.
c.
Power
on
the
system.
Does
the
same
SRC
occur?
v
Yes
:
Continue
with
the
next
step.
v
No
:
Go
to
and
follow
the
service
actions
for
the
new
SRC.
If
the
IPL
is
successful,
then
the
failing
item
is
in
a
secondary
I/O
tower.
Restore
the
I/O
towers
one
at
a
time
until
the
problem
is
isolated.
12.
Is
this
system
a
Model
830,
SB2
system
unit
and
FC
9074?
v
Yes
:
Continue
with
the
next
step.
v
No
:
Go
to
Step
14
(See
page
Analyze
hardware
problems
291
