Cisco 7000 Series Hardware Installation And Maintenance page 27

Physical Description
fan control
The
variable-speed
maximum
temperature
When
slowest
exceeds
air to
increases the fan speed
exceeds
prevent
All
six
display
minutes
specific
Functions
The
fan
must
System Backplane
The
high-speed
the basic system
distributed
CxBus
CxBus
2/4/6-port
interface
L1
Figure
The
backplane
them
for
Although
IP
an
Cisco 7010 Hardware
1-8 Installation
on
board fan
the
tray
feature enables
when
so provides
speed doing
inside the chassis
temperature
the ambient
air
temperature
speed which
55 percent
is
normal range
the the fan control
the
internal If the
components
fans reach
until the
the specified the system
threshold
from
equipment excessive
damage
must
fans the array be
in
operational
warning message on the
the shut
entire will
system
thresholds and
message
descriptions
and
in this
Troubleshooting
chapter to
FRU
available
is
as
tray
fan tray Chapter
the
replace
Extended Bus
Cisco
The
architecture
and
control
processing
and
IPs the system
IP-to-IP
TRIP
EIP
CxBus
Ethernet Token
2/4-port
interface
processor processor
LJ LJ LJ LJ LJ
Router System
1-7
Architecture
slots keyed so that
are
Keys on
the
fit
backplane
RP SP
and
the each
use unique
any IP slot but not
in in the
and Maintenance
monitors and controls
the
operation
quieter by
operation allowing
air to
adequate cooling
RP
the
sensor on
normal
within the
is
operating
maximum
of the
speed If
board increases fan speed
the
continues
temperature to
full 100
percent
speed
environmental monitor
heat
the system detects
If
console condition
If the
screen
down
avoid
an overtemperature
to
Environmental
refer to
Cooling Subsystem
the
Individual
fans are not field-replaceable
fan
provides replacement
tray
CxBus
information
transfers
RP
which
contains the system
the IPs The SP
for controls
IP-to-processor
processor
Route Processor
RP
CPU
68040
EPFtOM
Flash
DRAM
16-MB
ENVM
Logic
Processor
Switch
SP
CxBus
FtP
FDDI
Ring
Single-port
interface
processor
LJ
LJ
RP
the SP
and be
IPs can
two key on
into each
guides
keys all three IP
slots
RP
SP
slots
or
of
the
variable-speed
the fans
to at less
operate
maintain
an
acceptable operating
monitors the
internal air
temperature
fans operate
the at the
range
inside the chassis
the
temperature
additional
to
provide
rise the fan control board
linearly
the
If internal
temperature
down
shuts
all internal
power
failed
fan
or failing
it
is two
not corrected within
and shutdown
condition
and
Monitoring Reporting
in Chapter
single fan
if fails
instructions
Mbps
533
1-7
at Figure
and SP
the
processor provide
communication between
high-speed
Distributed
processing
CxBus FSIP CxBus
4/8
port fast serial
Single-port
interface interface
processor
only in
installed the slots
designated
module
See
Figure
processor
same
key
use the so can
you
fans
than
cooling
to
will
For
you
shows
HIP
HSSI
processor
1-8
install