HP ProBook 4311s HP ProBook 4310s Notebook PC and HP ProBook 4311s Notebook PC - Page 98

Remove the four Phillips PM2.0×4.0 screws, If it is necessary to replace the fan

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Removal and replacement procedures ✎ 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 4-53

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Removal and replacement procedures
Maintenance and Service Guide
4–53
✎
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.