5-3
Cisco 7200 VXR Installation and Configuration Guide
OL-5013-09
Chapter 5 Troubleshooting the Installation
Troubleshooting Overview
• Cooling subsystem—The chassis fan tray is the single component in this subsystem. The fans should
be operating whenever system power is on. Replace the fan tray if you determine a fan is not
functioning properly.
• Processor subsystem—This subsystem includes the I/O controller, network processing engine
(NPE) or network services engine (NSE), the Port Adapter Jacket Card, and all port or service
adapters. The system memory and management functions reside on the I/O controller and the
network processing engine or network services engine. The enabled LED on each port adapter
indicates if the port adapter is initialized. A port adapter that is partially installed in the midplane
can cause the system to hang and crash.
The following sections help you isolate a problem to one of these subsystems and direct you to the
appropriate troubleshooting section.
Identifying Startup Problems
Note When powering on or powering off the router, wait 30 seconds before powering it on or powering it off
again.
Startup problems are commonly due to the source power or to a board (network processing engine or
network services engine, I/O controller, or port or service adapter) that is dislodged from the midplane.
Although an overtemperature condition is unlikely at initial startup, the environmental monitoring
functions are included in this chapter because they also monitor internal voltages.
When you start up the router for the first time, you should observe the startup sequence described in the
“Starting the System and Observing Initial Conditions” section on page 4-2 in Chapter 4, “Observing
System Startup and Performing a Basic Configuration.” This section contains a more detailed description
of the normal startup sequence and describes the steps to take if the system does not perform that
sequence as expected.
With the exception of the fan tray and network processing engine or network services engine, LEDs
indicate all system states in the startup sequence. By checking the state of the LEDs, you can determine
when and where the system failed in the startup sequence. Use the following descriptions to isolate the
problem to a subsystem, and then proceed to the appropriate sections to try to resolve the problem.
Fans Operating
You should immediately hear the fans operating. If not, proceed to the “Troubleshooting the Cooling
Subsystem” section on page 5-10. If you determine that the power supply is functioning normally and
that a fan is faulty, contact a customer service representative. If a fan does not function properly at initial
startup, there are no installation adjustments that you should make.
Power LEDs
The green power OK LED (at the rear of the chassis) should come on immediately when you place the
power supply switch in the on (|) position, and remain on during normal system operation.
If the green power OK LED does not come on, proceed to the “Troubleshooting the Processor
Subsystem” section on page 5-7.
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