Follow
the
instructions
for
the
model
you
are
working
on:
v
Models
270,
800,
810,
820,
825
(See
page
v
Models
830,
840,
SB2,
or
SB3
(See
page
v
Models
870
and
890
(See
page
Instructions
for
Models
270,
800,
810,
820,
and
825
DANGER
To
prevent
power
from
switching
on
automatically
during
service
procedures,
select
manual
or
secure
mode
on
the
system
unit
control
panel
or
disconnect
the
cables
that
connect
to
J15
and
J16
on
the
frame
being
serviced.
(RSFTD211)
1.
Attempt
to
power
on
the
system.
See
Does
the
system
power
on,
and
is
the
Power
Ready
light
on
continuously?
Note:
The
Power
Ready
light
blinks
at
the
slower
one
blink
per
two
second
rate
while
powered
off,
and
at
the
faster
one
blink
per
second
rate
during
a
normal
power-on
sequence.
It
should
not
blink
at
the
faster
rate
for
more
than
one
minute.
v
No
:
Continue
with
the
next
step.
v
Yes
:
Go
to
step
14
(See
page
.
2.
Are
there
any
characters
displayed
on
the
control
panel?
(A
scrolling
dot
may
be
visible
as
a
character.)
v
No
:
Continue
with
the
next
step.
v
Yes
:
Go
to
step
5
(See
page
.
3.
Are
the
mainline
ac
power
cables
from
the
power
supply,
power
distribution
unit,
or
external
uninterruptible
power
supply
at
the
customer’s
ac
power
outlet
connected
and
seated
correctly
at
both
ends?
v
Yes
:
Continue
with
the
next
step.
v
No
:
Connect
the
mainline
ac
power
cables
correctly
at
both
ends
and
go
to
step
1
(See
page
.
4.
DANGER
Dangerous
voltage
being
measured.
(RSFTD005)
Perform
the
following:
a.
Verify
that
the
uninterruptible
power
supply
is
powered
on
(if
it
is
installed).
b.
Disconnect
the
ac
power
cable
or
ac
power
jumper
cable
from
the
system’s
ac
power
connector
at
the
power
supply.
c.
Use
a
multimeter
to
measure
the
ac
voltage
at
the
customer’s
ac
power
cable
or
ac
power
jumper
cable
at
the
system
power
supply
end.
Note:
Some
system
models
have
more
than
one
mainline
ac
power
cable
or
ac
power
jumper
cable.
For
these
models,
disconnect
all
the
mainline
ac
power
cables
or
ac
power
jumper
cables
and
measure
the
ac
voltage
at
all
ac
power
supply
cables
before
answering
the
following
question.
Is
the
ac
voltage
from
200
V
ac
to
240
V
ac
or
from
100
V
ac
to
127
V
ac?
v
No
:
Go
to
step
6
(See
page
.
v
Yes
:
Perform
the
following:
a.
Power
off
the
system.
b.
Disconnect
the
power
cable.
c.
Continue
with
the
next
step.
32
iSeries:
iSeries
Server
270,
800,
810,
820,
825,
830,
840,
870,
890,
SB2,
and
SB3
Hardware
Problem
Analysis
and
Isolation
