To replace the system board battery:
1. Insert one edge of the battery (positive side UP) under the battery socket's tabs
(toward the rear of the system board).
2. Carefully press down on the battery to snap it under the battery release button.
3. Slide the pullout tray back into the unit frame until it locks into place.
Figure 39. Removing the system board battery (Models xx3)
54 SurePOS 700-723/743/783/784 Hardware Service Guide