HP Z400 Maintenance And Service Manual page 152

c.
With the LCS unit removed, gently twist the cold plate assembly (1), and remove it from the
retention ring (2), as shown in the following figure.
Figure 5-65
d. Use alcohol and a soft cloth to clean the thermal interface residue from the CPU and the cold
plate assembly, allowing the alcohol to dry completely afterward.
140 Chapter 5 Replacing components
Removing the cold plate assembly from the retention ring
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