Lenovo C315 All-In-One - Manual (Page 68)

Chapter 7. Replacing hardware
65
7. Loosen the seven screws that secure the CPU heat sink to the chassis.
6
1
4
2
3
7
5
8. Pull out the heat sink from the CPU.
5
2
3
7
4
1
6
9. Set the new heat sink on the CPU, aligning the seven screws in the
heat sink with the screw sockets in the chassis.
10. Tighten the seven screws on the heat sink.
11. Connect related cables to the underside of the system board.