NEC NF2300-SR412E User Manual page 37

(3) Power cooling fan
When the power switch is set to ON, a cooling fan is rotating. Note that the
ventilating holes are not blocked
Install the disk array unit so that the ventilating holes may not be
blocked. If either or both of the ventilating holes are blocked, the
internal temperature of the array controller may increase to cause a
fault to occur.
The power supply for the array controller is equipped with fans.
Even if a fan fails, the air-cooling conditions for the entire array
controller are satisfied. However, to guarantee the safety operation
of the disk array unit, replace the power supply for the array controller
immediately if a fan failure occurs.
(4) POWER GOOD LED (green)
The POWER GOOD LED lights green when the AC power is supplied to the array
controller and the power switch is set to ON. The LED is off if the power switch is
set to OFF or a fault occurs in the power supply.
(5) POWER FAIL LED (orange)
The POWER FAIL LED lights if a fault occurs in the power supply.
(6) BBU FAIL LED (orange)
The BBU FAIL LED lights when the respective battery backup unit is installed and a
fault occurs in the battery backup unit.
(7) Handle
If the power supply is defected, pull out it by holding the handle.
(8) Removal protection mechanism
The removal protection mechanism prevents the power supply from being removed
unexpectedly.
To remove the power supply, remove the power cord and slide the removal
protection mechanism to the inner side.
When inserting the power supply for the array controller into the array
controller, push it as far as it will go and then secure it with the screws.
Incorrect insertion may cause a power supply failure again.
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