Acer AB460 F1 - Manual (Page 117)

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Figure 3-57. Instaling a CPU
6. Lower the socket lever until it locks.
7. To install the heatsink, apply thermal grease to the top of the
processor. (If reinstalling a heatsink, first clean off the old thermal
grease with a clean, lint-free cloth.)
8. Place the heatsink on the processor then tighten two diagonal
screws until snug, then the other two screws.
9. When all four screws are snug, tighten them all to secure the
heatsink to the mainboard.
Note: Do not overtighten the screws as this may damage
the processor or the heatsink.
10. Replace the cover on the blade unit and finish by installing the
unit back into the blade enclosure.
DIMM Installation
Warning! Exercise extreme care when installing or
removing DIMM modules to prevent any possible damage.
Gold dot
Socket key
CPU key
Notched corner
CPU pin