Replacing a Power Unit 7–3
Hitachi Unified Storage Hardware Service Guide
7. Loosen the blue screw on the cache backup battery cover and then open
the cover.
8. Remove the cable for the cache backup battery from the cable clamp.
9. Remove the cable for the cache backup battery from the connector of
the Power Unit to be replaced.
10.Remove the cache backup battery and add it to the replacement Power
Unit. Connect the cable for the cache backup battery to the connector
on the Power Unit.
11.Use the cable clamp to secure the cable for the cache backup battery.
12.Close the cache backup battery cover and then use the blue screw to
tighten the cover.
13.With the lever opened completely, insert the replacement Power Unit all
the way into the slot.
14.Push the Power Unit all the way in.
15.Close the lever completely and fasten the Power Unit.
16.Connect the power cable.
17.Confirm the status of the following LEDs:
- Green P-RDY LED on the Power Unit is ON.
- Green READY LED on the front of the Controller Box is ON. This
LED may blink rapidly for up to 50 minutes.
- Red ALARM LED and orange WARNING LED are OFF. If these two
LEDs blink slowly, visit the HDS Support Portal at portal.hds.com.
18.In Hitachi Storage Navigator Modular 2, check the recovery after
replacing components (see Checking recovery after replacing
components on page 3-14).
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