Lenovo THINKCENTRE 6019 - Manual (Page 141)

13. Place the new heat sink 1 into position and lower the lever 2 to secure the
heat sink.
14. Reconnect the microprocessor fan cable to the system board. See “System
board connectors” on page 117.
15. Go to “Completing the parts replacement” on page 148.
Chapter 9. Replacing FRUs - Ultra SFF Desktop computers 135