HP Dc7700 HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 155

Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 12. Slide the system board tray assembly towards the front of the chassis, about 6 mm (1/4 inch) and lift the system board up and out of the chassis. 13. Remove the heatsink from the system board and the system board tray (Section 7.14). To install the system board, reverse the removal procedure. ✎ The heatsink should be installed on the system board before the system board is reinstalled in the chassis. Ä 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 spares kit. After the alcohol has evaporated, apply thermal grease to the top of the processor from the syringe supplied in the spares kit. ✎ 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. Ä CAUTION: When reconnecting the cables it is important that they be positioned so they do not interfere with the rotation of the drive cage or power supply. Service Reference Guide, dc7700 433612-001 7-41