Note:
For
2105
and
9337
Disk
Units,
characters
4-8
of
the
bottom
16
character
line
of
function
13
(5
rightmost
characters
of
word
8)
contain
the
disk
unit
serial
number.
v
Characters
13-16
of
the
bottom
16
character
line
of
function
13
(4
rightmost
characters
of
word
9)
contain
the
disk
unit
reference
code.
12.
Is
the
disk
unit
a
9337?
v
Yes
:
Go
to
step
21
(See
page
v
No
:
Is
the
disk
unit
reference
code
0000?
–
No
:
Continue
with
the
next
step.
–
Yes
:
Find
the
table
for
the
indicated
disk
unit
type
in
Then,
find
unit
reference
code
(URC)
3002
in
the
table,
and
exchange
the
FRUs
for
that
URC,
one
at
a
time.
Note:
Do
not
perform
any
other
PIPs
that
are
associated
with
URC
3002.
This
ends
the
procedure.
13.
Are
characters
9-16
of
the
bottom
16
character
line
of
function
13
(word
9)
B6xx
51xx?
v
Yes:
Use
the
B6xx
table
in
the
Perform
problem
analysis
for
the
51xx
unit
reference
code.
This
ends
the
procedure.
v
No:
Continue
with
the
next
step.
14.
The
disk
unit
has
device
parity
protection
if
the
disk
unit
model
number
is
equal
to
″
070
″
or
greater.
The
disk
unit
model
number
is
characters
14-16
of
the
bottom
16
character
line
of
function
12
(word
5).
Is
the
model
number
equal
to
″
070
″
or
greater?
v
No:
Using
the
information
from
step
11
(See
page
find
the
table
for
the
indicated
disk
unit
type
in
Perform
problem
analysis
for
the
disk
unit
reference
code.
This
ends
the
procedure.
v
Yes:
Continue
with
the
next
step.
15.
The
disk
unit
has
device
parity
protection.
Perform
the
following:
a.
Perform
function
3
to
IPL
the
system
to
DST.
Ignore
any
error
messages
that
appear
during
the
IPL.
b.
Look
for
a
Service
Action
Log
entry
since
the
last
IPL,
and
use
it
to
fix
the
problem.
See
If
a
B6xx
5090
SRC
occurred
since
the
last
IPL,
look
for
other
SRC
entries
and
take
action
on
them
first.
This
ends
the
procedure.
16.
Are
the
2
rightmost
characters
of
word
2
on
the
Problem
summary
form
equal
to
62?
v
Yes
:
Are
characters
9-16
of
the
top
16
character
line
of
function
12
(word
3)
equal
to
00010004?
–
Yes
:
Continue
with
the
next
step.
–
No
:
Go
to
step
19
(See
page
v
No
:
Use
the
information
in
characters
9-16
of
the
bottom
16
character
line
of
function
13
(word
9)
and
go
to
Use
this
information
instead
of
the
information
in
word
1
for
the
reference
code.
This
ends
the
procedure.
17.
Are
characters
13-16
of
the
bottom
16
character
line
of
function
12
(4
rightmost
characters
of
word
5)
equal
to
0000?
v
No
:
Continue
with
the
next
step.
v
Yes
:
Go
to
step
20
(See
page
18.
Disk
information
available
in
this
step
is:
v
Characters
13-16
of
the
bottom
16
character
line
of
function
12
(4
rightmost
characters
of
word
5)
contain
the
disk
unit
reference
code.
v
Characters
1-8
of
the
top
16
character
line
of
function
13
(word
6)
contains
the
disk
unit
address.
140
iSeries:
iSeries
Server
270,
800,
810,
820,
825,
830,
840,
870,
890,
SB2,
and
SB3
Hardware
Problem
Analysis
and
Isolation
