CX2550/60/70 M4 Upgrade and Maintenance Manual 221
Figure 109: Installing the CPU heat sink
Ê Carefully seat the heat sink onto the CPU socket.
I Take care of the pins. There is only one position which fits.
Ê Fasten the four captive screws (see circles) in the sequence printed on the
heat sink (1 to 4) by hand, by proceeding as follows:
Torque: 1.35 Nm (not applicable for Japan)
Ê At first, fasten the four captive screws one by one (1 to 4) by hand
rotating them three turns.
Ê Then, fasten the four captive screws one by one (1 to 4) by hand until the
captive screws are completely tightened.
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