HP Compaq dc7100 DT Reference Manual page 175

11. Slide the system board tray assembly towards the front of the chassis, about 1/4 inch and lift
the system board up and out of the chassis.
12. Remove the heatsink from the system board and the system board tray
"Heatsink").
When reinstalling the system board it is important to secure the system board and tray to the
chassis with the long retaining screw before performing any subsequent steps. Locking the board
in place makes the installation of the heatsink easier and prevents damage.
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CAUTION: When reconnecting the cables it is important that they be positioned so they do not interfere
with the sliding of the drive cage the rotation of the power supply
Complete the installation of the system board by reconnecting all cables.
The heatsink should be installed on the system board before the system board is reinstalled in the
chassis.
CAUTION: Before reinstalling the heatsink you must clean the top of the processor and the bottom of the
heatsink with an alcohol pad supplied in the speaker spares kit. After the alcohol has evaporated, apply
thermal grease to the top of the processor from the syringe supplied in the speaker spares kit.
Service Reference Guide, dc7100
Removal and Replacement Procedures— Small Form Factor (SFF) Chassis
361288-003
(Section 7.15,
7–49