HP ProBook 4310s Maintenance And Service Manual page 98

✎
The thermal material must be thoroughly cleaned from the surfaces of the heat sink and the system board
each time the fan and heat sink are removed:
■
Thermal paste is used on the processor 1 and the heat sink section 2 that services it.
■
Thermal pads are used on the Northbridge chip 3 and the heat sink section 4 that services it.
■
Thermal pads are used on the graphics subsystem memory module 5 and the heat sink section 6 that
services it.
Replacement thermal material is included with all system board, heat sink, and processor spare part kits.
5. If it is necessary to replace the fan:
a. Remove the four Phillips PM2.0×4.0 screws 1 that secure the fan to the heat sink.
b. Remove the heat sink 2 by lifting it straight up.
Reverse this procedure to install the fan and heat sink.
Maintenance and Service Guide
Removal and replacement procedures
4–53