HP EliteOne 800 G3 All-in-One Business PC - Maintenance & Service Guide

Heat sink
Heat sinks are available for models with integrated UMA graphics and with discrete graphics.
To remove the heat sink:
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 19).
2. Remove the rear port cover (see Removing the rear port cover on page 19).
3. Remove the stand (see Stands on page 20).
4. Remove the access panel (see Access panel on page 21).
5. UMA models:
In the order indicated on the heat sink, loosen the captive Torx screws (1) from the heat sink component
that services the processor.
CAUTION: Remove heat sink retaining screws 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.
6. Remove the non-captive Torx screws from the brackets at the top of the heat sink (2).
Heat sink 35