Removal and Replacement Procedures 
9.  Loosen the two thumbscrews securing the backplane to the chassis (1). 
10. Grasp the backplane, pulling toward the rear of the server to release it from the four 
retaining guides. 
11. Lift the backplane away from the server (2). 
 
Figure 2-51:  Removing the power supply backplane 
To replace the power supply backplane, reverse steps 8 through 11. 
 
NOTE:  Be sure that you align the four retaining guides on the chassis with the holes on the power 
supply backplane when replacing it. 
HP ProLiant ML370 Generation 3 Server Maintenance and Service Guide  2-55