Problem
Solving
Problem
Solving
The key
to
problem
solving
in
system
such
as
the
CRM3
is
to
try
to isolate
the
problem
to
specific
subsystem
By
comparing
what
the system
is
doing
to
what
it
should
be doing
the task of
isolating
problem
is
greatly simplified
When
problem
solving
consider
the
following
subsystems
Network
Processor
ModulesProblems
with
these
modules
can
be
the
most
difficult
to
troubleshoot
The
light
emitting
diodes
LEDs
on
the
network
processor
modules
can
be used
to
help
identify
failure
For
complete
information
on
LED
indications
refer
to
section
Reading
Front
Panel
LED
Indicators
System cablesThis
subsystem
includes
all
of the external
cables
that
connect
the router
to
the
network
Troubleshoofing
the
Network
Processor
Modules and
Cables
Check
for
the following
symptoms
to
help
isolate
the
problem
Network
processor
module
is
not recognized
by
the
system
Check
the
network
processor
module
connection
to
the
motherboard
connector
Check
the
LEDs
on
the
network
processor
module
Network
processor
module
is
recognized
but
interface
ports
will
not
initialize
Check
the
motherboard
connection
Check
the
external
cables
for
connection
System
will
not boot
properly
or constantly/intermittently reboots
Check
the
network
processor
module
connection
to
the
motherboard
Check
the external
cables
for
connection
Suspect
the
processor
or software
System boots
but
console
screen
is
frozen
Check
the
external
console
connection
Check
the external
cables
for
connection
Verify
the console
baud
rate
in
the
documentation
for
your terminal
System
boots
with
particular
network
processor
module
removed
from
the
router
Check
the external
cables
for
connection
Suspect
the
network
processor
module
System
boots
with
particular
cable
disconnected
Suspect
the
network
processor
module
or cable
Environmental
Reporting Features
If
the router
is
operating
at
an
abnormally
high
temperature
the
following
message
will
be
sent
to
the
console
screen
%SYS-1-OVERTEMP
System
detected
OVERTEMPERATURE
condition
Please
resolve
cooling
problem
immediately
4-2
CRM3
Hardware
Installation
and
Maintenance
Summary of Contents for CRM3
Page 1: ...ems en SYsTEM ...
Page 7: ...vi CRM3 Hardware Installation and Maintenance ...
Page 11: ...CRM3 Hardware Installation and Maintenance ...
Page 17: ...System Specifications 1 4 CRM3 Hardware Installation and Maintenance ...
Page 35: ...Inspecting the System 2 18 CRM3 Hardware Installation and Maintenance ...
Page 57: ...Bootstrap Program 4 14 CRM3 Hardware Installation and Maintenance ...
Page 67: ...Recovering Lost Password 5 10 CRM3 Hardware Installation and Maintenance ...
Page 87: ...Virtual Configuration Register Settings B fl CRM3 Hardware Installation and Maintenance ...