Advantech AIMB-256 - Manual (Page 18)

AIMB-256 User Manual 12
1.4.3 Uninstalling the CPU Heatsink and Fan
1. Disconnect the CPU fan cable
from the connector on the mother-
board.
2. Rotate each fastener counter-
clockwise.
3. Pull up two fasteners at a time in a
diagonal sequence to disengage
the heatsink and fan assembly
from the motherboard.