RX2540 M4 Upgrade and Maintenance Manual 351
11.2.3 Installing the CPU and heat sink
V CAUTION when replacing a system board
Ê Use a magnifying glass (recommended) to inspect the socket spring
contacts for damages from different angles. Do not use the spare
system board if any irregularities are visible. Possible damages:
– Contact spring is bent backwards upon itself
– Contact spring tip position is shifted or out of alignment
Never try to fix bent contact springs. Doing so may result in loss of
electrical performance and reliability.
Ê Confirm that the CPU model number printed on the top of the CPU fits with
the requirements.
Figure 231: Installing the CPU in the CPU frame
Ê Click the CPU into the CPU frame (see arrows). Ensure that the triangle
marks on CPU (A) and on CPU frame (B) are on the same edge.
Ê Ensure that the CPU fits in its place.
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