ds470010
Lever
Figure 21. Removing and replacing a controller
3.Place the controller on a level surface.
4.Repeat step 1 through step 3 for the second controller.
Removing an ac power supply and fan unit
Statement 5:
CAUTION:
The power control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.
2 
1 
CAUTION:
Disconnect the power cord before removing the power supply and fan unit.
Complete the following steps to remove a power supply and fan unit:
1.Squeeze the latch and pull the lever open 90° (so that the lever is horizontal) to release the power supply and fan unit from the latch. The latch is a coral colored tab on the lever.
2.Slowly pull the lever away from the chassis to remove the power supply and fan unit, as shown in Figure 22 on page 43.
Note: The lever rotates upward or downward 90°, depending on whether the power supply and fan unit you are removing is in the left or right power supply and fan unit bay.
42IBM System Storage DS4700 Express Storage Subsystem: Installation, User’s and Maintenance Guide
