HP Pro 4300 Maintenance And Service Manual page 58

3. If reusing the existing fan sink, clean the bottom of the fan sink with the alcohol pad provided in
the spares kit.
CAUTION:
bottom of the fan sink 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.
4. Apply the thermal grease provided in the spares kit to the top of the processor and install the fan
sink atop the processor.
5. Go to step 7.
6. If using a new fan sink, remove the protective covering from the bottom of the fan sink and place
it in position atop the processor.
7. Secure the fan sink to the system board and system board tray.
CAUTION:
X) to evenly seat the fan sink 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.
NOTE: After installing a new processor onto the system board, always update the system ROM to
ensure that the latest version of the BIOS is being used on the computer. The latest system BIOS can
be found on the Web at: http://h18000.www1.hp.com/support/files.
50 Chapter 6 Removal and Replacement Procedures All-in One (AIO) Chassis
Before reinstalling the fan sink you must clean the top of the processor and the
Fan sink retaining screws should be tightened in diagonally opposite pairs (as in an