Compaq dx2818 Service Reference Guide: HP Compaq dx2810 and dx2818 Business PC - Page 127

Heatsink, When reinstalling the heatsink

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Heatsink 1. Prepare the computer for disassembly (Preparation for Disassembly on page 83). 2. Remove the access panel (Access Panel on page 84). 3. Unplug the fan wire from the white system board connector labeled CPU FAN. 4. Loosen the four captive screws that secure the heatsink to the system board tray. CAUTION: Heatsink retaining screws should be removed in diagonally opposite pairs (as in an X) to even the downward forces on the processor. This is especially important as the pins on the socket are very fragile and any damage to them may require replacing the system board. 5. Lift the heatsink from atop the processor and set it on its side to keep from contaminating the work area with thermal grease. When reinstalling the heatsink, make sure that its bottom has been cleaned with an alcohol wipe and fresh thermal grease has been applied to the top of the processor. CAUTION: Heatsink retaining screws should be tightened in diagonally opposite pairs (as in an X) to evenly seat the heatsink on the processor. This is especially important as the pins on the socket are very fragile and any damage to them may require replacing the system board. Heatsink 117

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Heatsink
1.
Prepare the computer for disassembly (
Preparation for Disassembly
on page
83
).
2.
Remove the access panel (
Access Panel
on page
84
).
3.
Unplug the fan wire from the white system board connector labeled CPU FAN.
4.
Loosen the four captive screws that secure the heatsink to the system board tray.
CAUTION:
Heatsink retaining screws should be removed in diagonally opposite pairs (as in an
X) to even the downward forces on the processor. This is especially important as the pins on the
socket are very fragile and any damage to them may require replacing the system board.
5.
Lift the heatsink from atop the processor and set it on its side to keep from contaminating the work
area with thermal grease.
When reinstalling the heatsink, make sure that its bottom has been cleaned with an alcohol wipe and
fresh thermal grease has been applied to the top of the processor.
CAUTION:
Heatsink retaining screws should be tightened in diagonally opposite pairs (as in an X) to
evenly seat the heatsink on the processor. This is especially important as the pins on the socket are
very fragile and any damage to them may require replacing the system board.
Heatsink
117