Troubleshooting The Fan Tray - Cisco Catalyst 6840 Series Hardware Installation Manual

Troubleshooting
• If the OK LED then goes on, return the first power cord for replacement.
If this unit has more than one power cord, repeat Step 1 for each power supply.
If the OK LED still fails to light when the switch is connected to a different power source with a new power
cord, the power supply is probably faulty.
If a second power supply is available, install it in the second power supply bay, and contact a customer service
representative for further instructions.
Step 2 If you have a second power supply, repeat Step 1 for this power supply.
What to do next
If you are unable to resolve the problem or if you determine that either a power supply or backplane connector
is faulty, see

Troubleshooting the Fan Tray

To isolate a fan tray problem, follow these steps:
Procedure
Step 1
Verify that the FAN LED on the fan tray is green.
If the FAN LED is not green, see
not the power subsystem is functioning properly.
Step 2
Check to determine if the FAN LED is amber. If the FAN LED is amber, the fan tray is not seated in the
backplane or has malfunctioned.
Do the following:
• To ensure that the fan tray is seated properly, loosen the captive installation screws, remove the fan tray,
• Tighten all captive installation screws, and then restart the system.
• If the FAN LED is still amber, the system detects an individual fan failure. Contact a customer service
Contacting Cisco Customer Service, on page
and reinstall it.
representative for instructions.
82.
Contacting Cisco Customer Service, on page 82
Catalyst 6840-X Switch Series Hardware Installation Guide

Troubleshooting the Fan Tray

to determine whether or
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