3. Refer to Figure 23.
Figure 23. Check Power Supply Switch and Lights
4.Ensure that the DC On/Standby switch 1 is set to Standby.
5.Ensure that all power is removed from the rack.
6.Plug the other end of the power cable into the power source in the rack (see the Installation and Service Guide, or equivalent, for the rack).
7.Perform the grounding checks described in the Expandable Storage Plus: 2104 Models DU3 and TU3 Service Guide.
8.If the grounding check is satisfactory, switch on power to the rack. The green AC PWR light 4 comes on.
9.Switch on the DC On/Standby switch 1 on each power supply. If option switch 1 (see Figure 14 on page 19) is on, the green DC PWR light 3 comes on. If option switch 1 (see Figure 14 on page 19) is off, the green DC PWR light 3 stays off. It will come on when the 2104 is connected to the using system.
10.Go to “Connecting the 2104 to the Using System” on page 31.
302104 Model DU3 Installation Guide