Lenovo ideacentre A340 Hardware Maintenance Manual page 49

"Replacing the microprocessor (for selected models)" on page 41
To remove the system board, do the following:
1. Detach 7 connectors from the system board
Figure 33. Detaching 7 connectors
2. Remove 7 screws 2
Figure 34. Removing the system board
3. Remove the system board
that secure the system board to the panel module.
3 .
1 .
Chapter 7
.
Installing or replacing hardware
43