HP Z400 - Workstation Maintenance And Service Manual page 132

7. Set the cold plate retention ring on the CPU heatsink mounting base, and then slightly tighten a
single retention screw (see
figure.
TIP:
allowing the rest of the ring to move.
Figure 5-57
8. Install the LCS cold plate.
a.
b.
120 Chapter 5 Replacing components
Installing the CPU heatsink on page
Tighten the retention ring screw only one or two turns to keep its corner in place while
The retention screw
Remove the plastic cover from the bottom of the cold plate as shown in the following figure.
Figure 5-58 Removing the protective cap
Apply thermal compound to the top CPU surface (see
on page 128).
128) as shown in the following
Installing the CPU heatsink
ENWW