Lenovo ThinkSystem SR675 V3 User Manual page 141

To replace a processor and reuse the heat sink:
1. Remove the processor identification label from the heat sink and replace it with the new label
that comes with the replacement processor.
2. Wipe off old thermal grease on the heat sink with an alcohol cleaning pad.
To replace a heat sink and reuse the processor:
1. Remove the processor identification label from the old heat sink and place it on the new heat
sink in the same location.
Note: If you are unable to remove the label and place it on the new heat sink, or if the label is
damaged during transfer, write the processor serial number from the processor identification
label on the new heat sink in the same location as the label would be placed using a permanent
marker.
2. Wipe off old thermal grease on the heat sink with an alcohol cleaning pad.
3. Check whether the manufacturing date on the new heat sink exceeds two years.
• If yes, wipe off the thermal grease on the new heat sink with an alcohol cleaning pad, and go
to Step 2 Step 2 on page 133
• If no, go to
Step 2. Apply new thermal grease on the top of the processor with a syringe by forming four uniformly
spaced dots, while each dot consists of about 0.1 ml of thermal grease.
Figure 98. Thermal grease application
Step 3. Install the heat sink.
a. Align the triangular mark and screws on the heat sink with the triangular mark and threaded
posts on the processor socket; then install the heat sink on the processor socket.
b. Fully tighten all the screws in the installation sequence shown on the heat sink label.
Step 3 Step 3 on page 133
.
Chapter 5 Hardware replacement procedures
133