Dell Latitude 7210 2-in-1 Service Manual page 33

c) In sequential order (as indicated on the heat sink), loosen the captive screws that secure the heat sink to the system board
4. To remove the heat sink assembly:
a) Loosen the M2 x 2.5 captive screws (4) that secure the heat sink assembly to the tablet [1].
NOTE: Remove the screws in the order of the callout numbers [1, 2, 3, 4] as graphically printed on the heat sink.
b) Lift the heat sink assembly from the tablet [2].
Disassembly and reassembly 33