Fault Of Battery Backup Unit - NEC NF2300-SR412E User Manual

8.8

Fault of Battery Backup Unit

If the battery backup unit is defected, the SERVICE LED on the array controller lights
orange. In addition, the BBU FAIL LED on the power supply corresponding to the
defected battery backup unit, PS0 for BBU0 or PS1 for BBU1, lights orange. The defected
battery backup unit may be replaced with the power supply of the disk array unit
remaining ON.
<Replacement procedure>
(1) Open the front mask key and remove the front mask from the array controller.
(2) Loosen the three screws fixing the battery cover of the array controller to remove the
cover.
(3) Set the battery switch of the defected battery backup unit to OFF.
(4) Loosen the two set screws of the defected battery backup unit and pull out the
battery backup unit from the slot.
Because the battery backup unit has a drop protection claw, it cannot be pulled out
only by pulling it straight.
If the claw is caught by the chassis, push the battery backup unit to the depth a little,
slide the battery backup unit to the right, and pull out it.
The battery backup unit is as heavy as 4.5 kg. Pull out the battery
backup unit slowly and carefully so that the unit may not be dropped.
97