Cisco Catalyst 6807-XL Istruzioni operative

Troubleshooting

•Getting Started, page 1

•Solving Problems at the System Component Level, page 1

•Identifying Startup Problems, page 2

•Troubleshooting the Power Supply Module, page 2

•Troubleshooting the Fan Tray, page 3

•Contacting Cisco Customer Service, page 4

•Finding Serial Numbers, page 4

Getting Started

When the initial system startup is complete, verify the following:

•Power supplies are supplying power to the system.

•The fan tray assembly is operating.

•System software boots successfully.

If one or more of the above conditions are not met, use the procedures described in this chapter to isolate and,

if possible, resolve the problem. If all of the above conditions are met, and the hardware installation is complete,

refer to your software release notes for hardware support information and software caveats.

Solving Problems at the System Component Level

The key to success when troubleshooting the system is to isolate the problem to a specific system component.

The first step is to compare what the system is doing to what it should be doing. Because a startup problem

can usually be attributed to a single component, it is more efficient to isolate the problem to a subsystem rather

than troubleshoot each separate component in the system.

The switch consists of these subsystems:

•Power supplies

Cisco Catalyst 6807-XL Switch Hardware Installation Guide

•Fan tray assembly

The chassis fan tray assembly should operate whenever system power is on. You should see the FAN

LED turn green and hear the fan tray assembly operating. A FAN LED indicates that one or more fans

in the fan tray assembly is not operating. You should immediately contact a Customer Service

representative if the fan tray assembly is not functioning properly. There are no installation adjustments

that you can make if the fan tray assembly does not function properly at initial startup.

Identifying Startup Problems

LEDs indicate all system states in the startup sequence. By checking the LEDs, you can determine when and

where the system failed in the startup sequence.

Procedure

Step 1 Turn on the power supplies. You should immediately hear the system fan tray assembly begin to operate.

•If you do not hear the fans operating, see the Troubleshooting the Power Supply Module, on page 2

section.

•If you determine that the power supplies are functioning normally and that the fan tray assembly is

faulty, contact a customer service representative.

•If the fan tray assembly does not function properly at initial startup, there are no installation adjustments

that you can make. Troubleshooting the Fan Tray, on page 3 section.

Step 2 If the startup information and system banner do not display at startup, verify that the terminal is set correctly

and that it is connected properly to the console port.

Troubleshooting the Power Supply Module

If the INPUT OK LED does not light up after you turn on the power switch, follow these steps to isolate a

power subsystem problem:

Procedure

Step 1 Verify that the INPUT OK LED on the PSM is green.

a) If the IN LED is green, the AC source is good and the power supply is functional.

b) If the IN LED is off, ensure that the PSM is flush with the back of the chassis. Turn off the power switch,

tighten the captive installation screw, and then turn on the power switch.

c) If the IN LED remains off, there might be a problem with the AC source or the power cord.

d) Turn off the power to the switch, connect the power cord to another power source if one is available, and

turn on the power.

e) If the IN LED is green, the problem is the first power source.

Cisco Catalyst 6807-XL Switch Hardware Installation Guide

Troubleshooting

Identifying Startup Problems

f) If the IN LED fails to light up after you connect the power supply to a new power source, replace the

power cord, and turn on the switch.

g) If the IN LED then lights up, return the first power cord for replacement.

If this unit has more than one power cord, repeat Step 1 (and all the substeps) for each PSM.

For information about PSM LEDs, see Power Supply Module LEDs.

Step 2 If the INPUT OK LED still fails to light up when the switch is connected to a different power source with a

new power cord, the PSM is probably faulty.

If a second PSM is available, install it in the second power supply bay, and contact a Cisco customer service

representative for further instructions.

Step 3 Verify that you have installed the power cord in the correct PEM.

Each PSM and corresponding PEM is numbered.

Step 4 Repeat Step 1, Step 2 , and Step 3 for all the PSMs that you have installed.

If you are unable to resolve the problem, or if you have determined that either a power supply or a backplane

connector is faulty, contact a Cisco customer service representative for instructions.

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