Cisco 3000 Series, Hardware Installation And Maintenance

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Problem
Solving
TrouWeshooting
the
Power
and Cookig Systems
Check
the following
items
to help isolate the problem
With
the
power
switch on does
the
blower operate
If
yes
the
AC
input
checks out
If
no
suspect
the
AC
input
AC
source the routers
circuit
breaker
or the
power
supply
cable
With
the
power
switch on and
system
LEDs
lit
does the fan
operate
If
no
suspect
the
fan
Does
the
system shut
down
after
being
on
short
time
Suspect an environmentally induced shutdown
Check
the environmental
site
requirements in the
section General
Site Requirements
in
Chapter
and ensure
that
the chassis intake and exhaust vents are clear
Suspect power
supply failure
System
partially
boots but
LEDs
do
not light
Suspect
5-volt
power
supply failure
Troubeshootkig
the
Network
Onterfaces
and
Cabes
Check
for
the following
symptoms
to help isolate
the
problem
Network
interface
is
not recognized
by the
system
Check
the
LED
that
corresponds to
the
network
interface
Network
interface
is
recognized
but
interface ports
will
not
initialize
Check
the external cable
connection
System
will not boot
properly
or constantly/intermittently reboots
Suspect
the processor
or software
System boots but console
screen
is
frozen
Check
the external console
connection
Verify
the console
baud
rate in
the terminals
documentation
System powers on and boots
with
particular
interface
disconnected
Suspect
the
network
interface
System powers on and boots
with
particular
network
interface
or cable
disconnected
Suspect the
network
interface
or cable
4-2
Cisco 3000 Hardware
Installation
and Maintenance