Cisco 7000 Series Hardware Installation And Maintenance page 115

Problems
Identifying Startup
When
supply
The
receiving
or
power
cooling
The
DC
If
OK
which
operation
or continuing
For
will
failure
minutes
the
Depending
As
are
equipment
should
Cisco
4-4
Hardware
1010 Installation
the system by
start
you up turning
should
the occur
following
OK
DC LED
go on immediately and
should
power and
source
the
off while
if the
it power
goes
DC
the
internal that
power
subsystem
OK
DC LED
indicates
green
OK
LED
on when
all
stays
Power on and
is
supply receiving
Power
is
supply providing
DC
All are within
internal
voltages
AC
the or any of
source
power
LED
will not on or will
go
12
VDC
-12
uses
with
problem any of
operation
there
example if problem
is
but
start also
up recognize
shutdown
display
sequence
there problem with
If
is
so the system
system software
DC
when
the
upon
OK
DC LED
the
If off
stays
with
problem either the
is
Proceed
internal
components
OK
DC LED
on
If the
goes
down
shutting itself
likely
condition within the
power
OK
DC LED
the
If on
goes
and
shuts
message
following
Proceed
to Troubleshooting
%ENVM-2-FAN
Fan
array
OK
DC LED
the off yet the
If
stays
down
and
shuts
after
message
Proceed
the fan tray
to
to
the
on
soon turn power switch you
as
you
in an unusually
environment
noisy
hand
noise
place
your
the exhaust
feel air that
OK
DC LED
on
If the
is but
fans
or with of the
one The
properly Proceed
not functioning
OK
DC LED
the on
If
is at startup
two minutes there
is problem
Subsystem
and Maintenance
main
on the
system
power
should
it
switch
on
in the
power is
switch there could
on
still
the
distributes
power
supply
of the
the
status supply
power
of
the conditions
following
VAC
100 240
50
to
24
12 VDC
the
and
-12
tolerance
DC
voltages exceeds
the internal
off turn
after
go you
shortly
and fan which
the uses
tray
DC
the internal lines can
24 VDC
with the
line that
the fans
that
not operating
are
the appropriate
warning messages
DC
of the other
lines
any
might attempt to start
up
OK
LED
off proceed
goes
on when
if it never
goes
AC DC
source the
or
power
to Troubleshooting the
then within
off
temporaiily
goes
because
detected an out-of-tolerance
it
Proceed
Troubleshooting
supply to
and
the system starts
up as
down
two minutes
after
Subsystem
the
Cooling
has shutdown
failed
starts
up
system correctly
two minutes
about
there
Power
Troubleshooting
the
should
immediately
such air-conditioned
an
as
near side of chassis
the left the
is
forced out
being the side
the
fans are not operating
down
shut
will itself
system
to
Troubleshooting
and
fans
are operating
with Proceed
the fan tray
switch on end
IP of the
the
remain
on the system
as long as
LED
If this does not go
position
be
with the source
problem
either
to the internal
components
DC
and
internal voltages
met
are
Hz
60
source
to
power
to internal
components
allowable
tolerances
Because
the both
on
power
24 YDC
for
are
required
from
the
prevent system
starting
fan tray
the
supplies the
The
will initiate
system
down
then
shut
after
RP
the will not be able
to initialize
and
fail
boot
during the
sequence
follows
as
on
turn
the switch
you power
that distributed to the
power is
Power
Subsystem
30 seconds
the
system
power or
temperature
Power
the
Subsystem
but then
expected
displays
there with fan tray
is the
problem
minutas
in
the
displays preceding
24
VDC
with
the
is problem
Subsystem
hear fans operating
the
with
closet
other
wiring
when the IP end
facing
of chassis
the
there with
the
is problem
detects of
if that the
it
any
the Subsystem
Cooling
down
but shuts
the
system
the
to Troubleshooting
power
is
on
or the
The
DC
the
RP
the
up
system
fan
two
there
most
is
the
line
If
you
you
fan
tray
fans are
after
Cooling