Acer Altos G530 Series - Manual (Page 72)

3 System upgrade 62
2 Disconnect the CPU fan cable from its mainboard connector.
3 Loosen the four screws that hold the HSF assembly to the
mainboard (1).
4 Pull the HSF assembly away from the CPU (2).
5 Place the HSF assembly upside down on a flat surface.
Note: Wipe off the thermal grease from both the HSF assembly
and CPU using an alcohol pad.