Dell PowerEdge T550 EMC Installation and Service Manual - Page 146

To avoid damaging the fins on the heat sink, do not press down on the heat sink fins.

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2. Align the pin 1 indicator of the heat sink to the system board, and then place the processor heat sink module (PHM) on the processor socket. CAUTION: To avoid damaging the fins on the heat sink, do not press down on the heat sink fins. NOTE: Ensure that the PHM is held parallel to the system board to prevent damaging the components. Figure 149. Installing the processor heat sink 3. Set the anti-tilt wires to the locked position (outward position), and then using the Torx T30 tool, tighten the nuts (12 in-lbf) on the PHM: a. Tighten the first nut three turns. b. Tighten the nut diagonally opposite to the nut you tighten first. c. Repeat the procedure for the remaining two nuts. d. Return to the first nut to tighten it completely. 146 Installing and removing system components

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2.
Align the pin 1 indicator of the heat sink to the system board, and then place the processor heat sink module (PHM) on the
processor socket.
CAUTION:
To avoid damaging the fins on the heat sink, do not press down on the heat sink fins.
NOTE:
Ensure that the PHM is held parallel to the system board to prevent damaging the components.
Figure 149. Installing the processor heat sink
3.
Set the anti-tilt wires to the locked position (outward position), and then using the Torx T30 tool, tighten the nuts (12 in-lbf)
on the PHM:
a.
Tighten the first nut three turns.
b.
Tighten the nut diagonally opposite to the nut you tighten first.
c.
Repeat the procedure for the remaining two nuts.
d.
Return to the first nut to tighten it completely.
146
Installing and removing system components