2–58 Hardware description
Hitachi Unified Storage Hardware Service Guide
Power Unit for DBW Drive Box
Figure 2-40: DBW Drive Box Power Unit
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NOTE: A CBXSS/CBXSL Controller Box cannot connect to a DBX/DBW
Drive Box
Legend Component Color Description
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Receptacle — Accommodates power cable.
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Switch — Press ON to apply power to the DBW Drive
Box.
Press OFF to remove power from the DBW
Drive Box.
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Power OK
LED
Green ON = Power Unit is operating normally.
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AC ALM LED Orange ON = Power Unit is experiencing trouble. Visit
the HDS Support Portal at portal.hds.com.
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PSU ALM LED Orange ON = Power Supply Unit is experiencing
trouble. Visit the HDS Support Portal at
portal.hds.com.