Hitachi NAS Platform 4040 - Page 79

Item Description
1 PSU 1
2 PSU 2
Figure 36 PSU components
Item Description
1 PSU fan
2 Power plug
3 Retaining latch
4 Handle
5 DC power LED
6 Malfunction or failure LED
7 AC power LED
Procedure
1. Remove the po
wer cord from the PSU.
2. Move the retaining latch to the right (you may hear a slight click if the PSU moves
when the latch disengages).
3. Using the handle on the PSU, pull the PSU out from the back of the server until you
can completely remove the PSU from the chassis.
4. Insert the replacement PSU. The retention latch should click into position all the way
to the left when the PSU is fully inserted.
If the PSU that is not being replaced is receiving mains power when the replacement
PSU is tted, the fan on the replacement PSU becomes active.
5. Connect the power cor
d to the back of the PSU.
The PSU should start as soon as the power connection is made. If the PSU does not
start immediately, make sure the mains power circuit is live and that the other end
of the power cable is connected to a live outlet.
Replacing a power supply unit
Chapter 5: Replacing server components
Hitachi NAS Platform and Hitachi Unied Storage Series 4000 Hardware Reference 79