HP dx7500 - Microtower PC Service & Reference Manual page 143

10. Remove the eight screws that secure the system board to the chassis, slide the board about 1.25
cm (1/2 inch) toward the front of the chassis, and then lift the board out of the chassis.
To install the system board, reverse the removal procedure.
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.
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.
NOTE: When replacing the system board, you must also change the chassis serial number in the
BIOS.
System Board 133