v
Failures
that
started
after
system
installation
v
Failures
that
occurred
during
customer
usage.
v
Failures
that
started
after
recent
service
or
customer
actions,
system
upgrade,
addition
of
I/O
devices,
new
software,
or
program
temporary
fix
(PTF)
installation.
v
Failures
occurring
only
during
high
system
usage.
v
Failures
occur
when
people
are
close
to
the
system
or
machines
are
attached
to
the
system.
2.
Recommend
that
the
customer
install
the
latest
cumulative
PTF
package,
since
code
PTFs
have
corrected
many
problems
that
seem
to
be
hardware
failures.
The
customer
can
order
the
latest
cumulative
PTF
package
electronically
through
Electronic
Customer
Support
or
by
calling
the
IBM
Software
Support
Center.
Review
the
service
recommendations
in
the
Preventive
Service
Planning
(PSP)
listing
for
any
additional
HIPER
(high
impact
pervasive)
PTFs.
This
information
is
available
from
the
IBM
Software
Support
Center
and
are
ordered
electronically
through
Electronic
Customer
Support
using
the
Send
PTF
Order
command
(
SNDPTFORD
).
The
Information
Center
at
http://www.ibm.com/eserver/iseries/infocenter
information
contains
a
chapter
on
working
with
PTFs.
3.
Review
the
latest
hardware
service
information
for
symptoms
that
are
related
to
the
problem.
Ask
your
next
level
of
support
for
the
latest
information
available.
4.
If
you
have
not
already
done
so,
use
the
maintenance
package
to
see
the
indicated
actions
for
the
symptom
described
by
the
customer.
Attempt
to
perform
the
on-line
problem
analysis
procedure
first.
If
this
is
not
possible,
such
as
when
the
system
is
down,
go
to
Use
additional
diagnostic
tools,
if
necessary,
and
attempt
to
cause
the
problem
to
occur
again.
Note:
Ensure
that
the
service
information
you
are
using
is
at
the
same
level
as
the
operating
system.
For
example,
do
not
use
Version
3
Release
1
manuals
when
servicing
a
system
with
software
at
Version
3
Release
6
level.
5.
Check
the
site
for
the
following
environmental
conditions:
a.
Any
electrical
noise
that
matches
the
start
of
the
intermittent
problems.
Ask
the
customer
such
questions
as:
v
Have
any
external
changes
or
additions,
such
as
building
wiring,
air
conditioning,
or
elevators
been
made
to
the
site?
v
Has
any
arc
welding
occurred
in
the
area?
v
Has
any
heavy
industrial
equipment,
such
as
cranes,
been
operating
in
the
area?
v
Have
there
been
any
thunderstorms
in
the
area?
v
Have
the
building
lights
become
dim?
v
Has
any
equipment
been
relocated,
especially
computer
equipment?
If
there
was
any
electrical
noise,
find
its
source
and
prevent
the
noise
from
getting
into
the
system.
b.
Site
temperature
and
humidity
conditions
that
are
compatible
with
system
specifications.
See
in
the
Plan
for
hardware
and
software
topic.
This
information
is
also
available
in
the
book
under
the
Planning
reference
topic.
Acceptable
operating
conditions
are:
v
Temperature:
10
degrees
C
to
37.8
degrees
C
(50
degrees;
F
to
100
degrees
F)
v
Humidity:
8%
to
80%
relative
humidity
The
best
operating
conditions
are:
v
Temperature:
23
degrees
C
(73
degrees
F)
v
Humidity:
40%
to
60%
relative
humidity
c.
Poor
air
quality
in
the
computer
room:
14
iSeries:
iSeries
Server
270,
800,
810,
820,
825,
830,
840,
870,
890,
SB2,
and
SB3
Hardware
Problem
Analysis
and
Isolation