
CAUTION
Because the cooling system relies on pressurized air, do not leave any of the power supply and
fan assembly slots empty longer than two minutes while the switch is operating. If a power
supply orand fan assembly fails, leave it in the switch until it can be replaced.
CAUTION
Disassembling any part of the power supply and fan assembly voids the warranty and regulatory
certifications. There are no user-serviceable parts inside the power supply and fan assembly.
Refer to
Non-port-side LED patterns for VDX 6940-36Q
on page 78 for details on the meaning of LED
patterns for the device power supplies and fans in one of the following locations to verify operation and
determine if replacement is necessary.
Determining the need to replace a power supply
Use one of the following methods to determine the status of the power supplies:
• Check the power supply status LEDs. Refer to "Interpreting LED activity" for details on LED normal
operation and error conditions.
• Enter one of the following commands in the command line interface to display power supply status:
‐
show chassis
‐
show environment power
• Check the power supply status in the Web Tools application.
Time and items required to replace a power supply
Replacing a power supply should take less than two minutes to complete.
You need the following items to replace a power supply:
• A new power supply (must have the same part number and the same airflow label as the power
supply being replaced)
• A #2 Phillips-head screwdriver
Power supply replacement
Use the following procedures to remove and install dual, hot-swappable 500W AC or DC power
supplies.
The power supplies are located in slots at the rear of the device. Each power supply FRU contains a fan
and can be ordered with front-to-back or back-to-front airflow. Although the two power supplies provide
redundancy for required power, both must be installed to provide sufficient airflow from their fans.
This section provides information about the following topics:
• Installation precautions and warnings
• Determining which power supply has failed, if necessary.
• Removing a power supply.
• Installing a power supply.
Determining the need to replace a power supply
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Summary of Contents for VDX 6940 Series
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Page 64: ...Verifying operation 64 Brocade VDX 6940 Hardware Installation Guide 53 1003495 02 ...
Page 84: ...Thermal operations 84 Brocade VDX 6940 Hardware Installation Guide 53 1003495 02 ...
Page 106: ...Replacing a transceiver 106 Brocade VDX 6940 Hardware Installation Guide 53 1003495 02 ...
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