IBM 9080-M9S Manual page 260

Figure 219. Placing the system node in service position
7. Remove the service access cover.
Attention: Operating the system without the cover for more than 10 minutes might damage the
system components. For proper cooling and airflow, replace the cover before turning on the
system.
a. Push the release latch (A) in the direction shown in the following figure.
b. Slide the cover (B) off the system unit as shown in the following figure. When the service access
cover has cleared the upper frame ledge, lift the cover up and off the system unit.
254 Power Systems: Removing and replacing parts in the 9080-M9S system