1.
Check
for
the
following
on
the
system:
v
There
must
be
no
more
than
11
connector
breaks
in
a
twinaxial
cable
run.
v
Station
protectors
must
be
installed
(in
pairs)
where
a
cable
enters
or
leaves
a
building.
v
There
can
only
be
two
station
protectors
for
each
twinaxial
run.
v
There
is
a
maximum
of
seven
devices
(with
addresses
0-6)
for
each
cable
run.
v
There
is
a
maximum
cable
length
of
1524
meters
(5000
feet)
for
each
port.
v
All
cable
runs
must
be
ended
(terminated).
v
Disconnect
all
twinaxial
cables
that
are
not
used.
v
Remove
any
cause
of
electrical
noise
in
the
twinaxial
cables.
v
All
workstations
must
be
grounded.
2.
See
chapter
9
in
the
iSeries
Technical
Information
Manual
SY44-0008,
and
use
it
to
check
for
any
cable
problems.
3.
For
more
information,
see
the
IBM
5250
Information
Display
Systems
—
Planning
and
Site
Preparation
Guide
,
GA21-9337.
This
ends
the
procedure.
INT-PIP7
Electromagnetic
interference
(EMI):
For
use
by
authorized
service
providers.
Use
this
procedure
to
lessen
the
effects
of
electrical
noise
on
the
system.
1.
Ensure
that
air
flow
cards
are
installed
in
all
full-size
card
slots
and
adapter
card
slots
that
are
not
used.
2.
Keep
all
cables
away
from
sources
of
electrical
interference,
such
as
ac
voltage
lines,
fluorescent
lights,
arc
welding
equipment,
and
radio
frequency
(RF)
induction
heaters.
These
sources
of
electrical
noise
can
cause
the
system
to
become
powered
off.
3.
If
you
have
an
expansion
unit,
ensure
that
the
cables
that
attach
the
system
unit
to
the
expansion
unit
are
seated
correctly.
Note:
If
the
failures
occur
when
people
are
close
to
the
system
or
machines
that
are
attached
to
the
system,
the
problem
may
be
electrostatic
discharge
(ESD).
4.
Have
an
installation
planning
representative
use
a
radio
frequency
(RF)
field
intensity
meter
to
determine
if
there
is
an
unusual
amount
of
RF
noise
near
the
iSeries
server.
You
can
also
use
it
to
help
determine
the
source
of
the
noise.
This
ends
the
procedure.
INT-PIP8
Grounding:
For
use
by
authorized
service
providers.
Use
this
procedure
to
ensure
that
the
system
is
electrically
grounded
correctly.
DANGER
An
electrical
outlet
that
is
not
correctly
wired
could
place
hazardous
voltage
on
metal
parts
of
the
system
or
the
products
that
attach
to
the
system.
It
is
the
customer’s
responsibility
to
ensure
that
the
outlet
is
correctly
wired
and
grounded
to
prevent
an
electrical
shock.
(RSFTD201)
1.
Have
an
installation
planning
representative
or
an
electrician
(when
necessary),
perform
the
following
steps.
2.
Power
off
the
iSeries
server
and
the
power
network
branch
circuits
before
performing
this
procedure.
3.
Read
Electrical
Safety
for
IBM
Service
Representatives
,
S229-8124.
4.
To
ensure
the
safety
of
personnel,
all
electrical
wiring
in
the
United
States
must
meet
National
Electrical
Code
requirements.
5.
Check
all
system
receptacles
to
ensure
that
each
one
is
wired
correctly.
This
includes
receptacles
for
the
server
and
all
equipment
that
attaches
to
the
server,
including
workstations.
Do
this
to
determine
110
iSeries:
iSeries
Server
270,
800,
810,
820,
825,
830,
840,
870,
890,
SB2,
and
SB3
Hardware
Problem
Analysis
and
Isolation
