Acer Altos G5450 Series - Manual (Page 69)

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7 Reinstall the HSF assembly.
(1) Apply thermal grease.
Apply approximately 0.1ml of the thermal grease compound
to the top of the CPU.
(2) Install the HSF assembly
(1) Move the handle of the retaining clip slightly in a
direction away from the heat sink.
(2) Align the heat sink fan assembly to the heat sink base (1).
Note: Make sure to install both sides of the retaining clips.
(3) Secure the retaining clip to the tabs in the heat sink base
by aligning the clip holes over the tabs (2).
(4) Secure the retaining clip back toward the heat sink base
(3).
(3) Connect the CPU fan cable to its mainboard connector. Refer
to “Mainboard layout” on page 14 for the location of the CPU
fan connector.
8 Observe the post-installation instructions described on page 36.
To install a second processor:
(1) Prepare the processor socket 2 for installation.
(2) Install the new processor.
Refer to steps 6 to 9 of the previous section.