problem
(see
before
performing
an
IPL.
Contact
your
next
level
of
support
as
necessary
for
assistance
with
SCSI
bus
problem
isolation.
If
the
problem
is
not
corrected,
continue
with
the
next
step.
3.
Perform
an
IPL
to
dedicated
service
tool
(DST)
(see
in
the
iSeries
Service
Functions
information).
Does
an
SRC
appear
on
the
control
panel?
v
No
:
Does
either
the
Disk
Configuration
Error
Report,
the
Disk
Configuration
Attention
Report,
or
the
Disk
Configuration
Warning
Report
display
appear?
–
Yes
:
Continue
with
the
next
step.
–
No
:
Go
to
step
5
(See
page
v
Yes
:
Go
to
step
6
(See
page
4.
Does
one
of
the
following
messages
appear
in
the
list?
v
Missing
disk
units
in
the
configuration
v
Missing
mirror
protection
disk
units
in
the
configuration
v
Device
parity
protected
units
in
exposed
mode
–
No
:
Continue
with
the
next
step.
–
Yes
:
Select
option
5
,
press
F11
,
and
then
press
Enter
to
display
the
details.
If
all
of
the
reference
codes
are
0000,
go
to
and
use
cause
code
0002.
If
any
of
the
reference
codes
are
not
0000,
go
to
step
6
(See
page
and
use
the
reference
code
that
is
not
0000.
Note:
Use
the
characters
in
the
Type
column
to
find
the
correct
reference
code
table.
5.
Does
the
Display
Failing
System
Bus
display
appear?
v
No
:
Look
at
all
the
Product
activity
logs
by
selecting
Product
activity
log
under
DST
(see
in
the
iSeries
Service
Functions
information).
If
there
is
more
than
one
SRC
logged,
use
an
SRC
that
is
logged
against
the
IOP
or
IOA.
Is
an
SRC
logged
as
a
result
of
this
IPL?
–
Yes
:
Continue
with
the
next
step.
–
No
:
You
cannot
continue
isolating
the
problem.
Use
the
original
SRC
and
exchange
the
failing
items,
starting
with
the
highest
probable
cause
of
failure
(see
the
failing
item
list
for
this
reference
code
in
the
tables).
If
the
failing
item
list
contains
FI
codes,
see
to
help
determine
part
numbers
and
location
in
the
system.
This
ends
the
procedure.
v
Yes
:
Use
the
reference
code
that
is
displayed
under
Reference
Code
to
correct
the
problem.
This
ends
the
procedure.
6.
Record
the
SRC
on
the
Problem
summary
form
(see
Is
the
SRC
the
same
one
that
sent
you
to
this
procedure?
v
Yes
:
Continue
with
the
next
step.
v
No
:
Go
to
to
correct
the
problem.
This
ends
the
procedure.
7.
Perform
the
following:
a.
Power
off
the
system
or
expansion
tower.
See
b.
See
to
find
the
devices
identified
by
FI
code
FI01106.
c.
Disconnect
one
of
the
disk
units,
(other
than
the
load-source
disk
unit),
the
tape
units,
or
the
optical
storage
units
that
are
identified
by
FI
code
FI01106.
Slide
it
partially
out
of
the
system.
Note:
Do
not
disconnect
the
load-source
disk
unit,
although
FI
code
FI01106
may
identify
it.
8.
Power
on
the
system
or
the
expansion
tower
that
you
powered
off.
Does
an
SRC
appear
on
the
control
panel?
106
iSeries:
iSeries
Server
270,
800,
810,
820,
825,
830,
840,
870,
890,
SB2,
and
SB3
Hardware
Problem
Analysis
and
Isolation