Brocade Communications Systems ICX 6650 series, Hardware Installation Manual

Page: 63 / 83

The green E symbol indicates an exhaust FRU. This unit pulls air in from the front of the switch and exhausts it out the rear side. This is
called front-to-back airflow or forward airflow.
The orange I symbol indicates an intake FRU. This unit pulls air in from the rear side of the switch and exhausts it out the front side. This
is called back-to-front airflow or reverse airflow.
CAUTION
Ensure that the airflow direction of the power supply unit matches that of the installed fan tray. The power supplies and fan
trays are clearly labeled with either a green arrow with an "E", or an orange arrow with an "I."
The show chassis command displays a device’s airflow direction: Front-to-Back or Back-to-Front.
Replacing a power supply unit
CAUTION
Remove the power cord from a power supply before you install it in or remove it from the device. Otherwise, the power
supply or the device could be damaged as a result. (The device can be running while a power supply is being installed or
removed, but the power supply itself should not be connected to a power source.)
CAUTION
Ensure that the airflow direction of the power supply unit matches that of the installed fan tray. The power supplies and fan
trays are clearly labeled with either a green arrow with an "E", or an orange arrow with an "I."
NOTE
Maintain all power supply and fan assemblies in operational condition to provide redundancy.
CAUTION
If you do not install a module or a power supply in a slot, you must keep the slot filler panel in place. If you run the chassis
with an uncovered slot, the system will overheat.
CAUTION
Changes or modifications made to this device that are not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
The following table describes the Brocade ICX 6650 power supply status LED colors, behaviors, and actions required, if any.
TABLE 11 Power supply status LED behavior, description, and required actions
LED color and behavior Description Action required
Off (no light) Power supply is not receiving power. Verify that the power supply is on and seated
and the power cord is connected to a functioning
power source.
Steady green Power supply is operating normally. No action is required.
Steady amber Power supply cable is disconnected or the
power supply has failed. Check the power cable connection.
Replace the power supply
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 LED (refer to Replacing a power supply unit on page 63).
Replacing a power supply unit
Brocade ICX 6650 Hardware Installation Guide
Part Number: 53-1003621-04 63