IBM 9009-22A Manual page 86

Figure 63. Location of the ESD plugs
7. Release the service access cover latch by pushing the release latch (A) in the direction shown.
8. 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.
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.
72 Power Systems: Power Systems: Drive backplane