IBM Power System 9009-41A Manual page 26

Figure 10. Location of ESD plugs
8. Remove the service access cover.
For a rack-mounted system, complete the following steps. Refer to Figure 11 on page 13.
Attention: Operating the system without the service access cover on for more than 10
minutes when the system power is turned on might damage the system components.
a. Release the service cover latch by pushing the release latch (A) in the direction shown.
b. Slide the cover (B) off the system unit. When the front of the service access cover clears the upper
frame ledge, lift the cover up and off the system unit.
12 Power Systems: Power Systems: Control panel