IBM Medium J11 Hardware Installation And Maintenance Manual page 77

Figure 27. Removing a PSU (1 of 2)
7. Grip the handle and withdraw the PSU, taking care to support the base of the module with both hands
as you remove it from the enclosure as shown in the figure below.
Figure 28. Removing a PSU (2 of 2)
Note: The remove PSU illustrations show a module with a single power connection. The procedure
applies equally to single cord and dual cord PSU modules used in 4U enclosures.
8. If replacing two PSUs, repeat Step 5 through Step 8, being mindful of the Enclosure rear panel
illustrations TIP.
Chapter 7. Module removal and installation 57