Q-Logic 16-Feb ユーザーズマニュアル

2 – General Description
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Each power supply is capable of providing all of the switch’s power needs. During 
normal operation, each power supply provides half of the demand. If one power 
supply goes offline, the second power supply steps up and provides the 
difference.

The power supplies are hot swappable and interchangeable. Hot swappable 
means that you can remove and replace one power supply while the switch is in 
operation without disrupting service.

Each power supply has two status LEDs: an Output Power LED (green) and an 
Over Temperature LED (amber):

„

The Output Power LED illuminates to indicate that the power supply is 
producing DC voltage at the proper levels.

„

The Over Temperature LED illuminates to indicate that the power supply is 
overheating. When a power supply overheats, the switch extinguishes the 
Output Power LED and shuts down the power supply. Refer to 

 for information about troubleshooting 

over temperature conditions.

The switch is equipped with two fans as shown in 

. If one fan should 

fail, the other fan is capable of providing the necessary cooling until the failed fan 
can be replaced. The fans are hot swappable and interchangeable. Refer to 

 for information about removing and replacing the fans. Air flow 

can be front-to-back or back-to-front depending on the switch model.

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