Troubleshooting The Port Adapters And Service Adapters; Troubleshooting The Cooling Subsystem - Cisco Router 7204 Installation And Configuration Manual

Chapter 5 Troubleshooting the Installation
If the I/O controller enabled LED does not go on as expected, make sure the power to the router is turned
off, reseat the network processing engine in its slot, and restart the router.
If the enabled LED remains off, the system detected a processor hardware failure. (This LED should be
on in normal operation.) Contact a service representative for instructions.

Troubleshooting the Port Adapters and Service Adapters

Check the following to help isolate a problem with the port or service adapters:
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•

Troubleshooting the Cooling Subsystem

Check the following to help isolate a problem with the cooling system:
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•
OL-5101-01
Are all adapter enabled LEDs on?
If yes, the system is operational.
Are any adapter enabled LEDs off?
– If the enabled LED on an individual adapter is off, suspect that the adapter has pulled away from
the midplane. Reseat the adapter in its slot (you do not have to turn off the system power when
removing or replacing port or service adapters). After the system reinitializes the interfaces (if
present—service adapters do not have interfaces), the enabled LED on the adapter should go on.
– If the enabled LED remains off, the system detected a processor hardware failure. (This LED
should be on in normal operation.) Contact a service representative for instructions.
When you start up the system, do the fans start operating?
To determine if the fans are operating, listen for them. In noisy environments, place your hand on
the left side of the chassis (when viewing the chassis from the front) to feel for air being forced out
the vents.
– If yes, the power to the fan tray is good.
– If no, there is a problem with the fan tray or power. Refer to the section "Troubleshooting the
Power Subsystem" in this chapter.
The following message, if displayed, indicates that the system has detected an overtemperature
condition or out-of-tolerance power inside the chassis.
Queued messages:
%ENVM-1-SHUTDOWN: Environmental Monitor initiated shutdown
If an environmental shutdown results from an out-of-tolerance power condition, the power OK LED
will go off, and the system shuts down. (Refer to the
section on page 5-5 .) Although an overtemperature condition is unlikely at initial startup, ensure
that heated exhaust air from other equipment is not entering the router's inlet vent, and that there is
sufficient clearance around the sides of the chassis to allow cooling air to flow. Refer to the
"Preventive Site Configuration: Maintaining Normal Operation" section on page 2-9
"Preparing for Installation"
The above message could also indicate a faulty component or temperature sensor. Before the system
shuts down, use the show environment or show environment table command to display the internal
chassis environment. (Refer to the
"Product Overview" for descriptions of the show environment and show environment table
commands.)
"Troubleshooting the Power Subsystem"
for preventive site configurations.
"Functional Overview" section on page 1-23
Cisco 7204 Installation and Configuration Guide
Troubleshooting the Cooling Subsystem
in Chapter 2,
in Chapter 1,
5-7