Maintenance and Service Guide

4. Thoroughly clean the thermal material from the surfaces of the heat sink and the system board
components each time the heat sink is removed. Replacement thermal material is included with the heat
sink and system board spare part kits. The following illustration shows the replacement thermal
material locations.
Thermal paste is used on the system board components (1), (3) and on the heat sink areas (2), (4) that
service them.
Reverse this procedure to install the heat sink.
Touchpad
To remove the touchpad, use this procedure and illustration.
Table
6-7 Touchpad description and part number
Description Spare part number
Touchpad M02058-001
Touchpad cable M02049-001
Before removing the touchpad, follow these steps:
1. Prepare the computer for disassembly (Preparation for disassembly on page 29).
2. Remove the bottom cover (Bottom cover on page 29).
3. Remove the battery (see Battery on page 37).
Remove the touchpad:
1. Remove the two Phillips M2.0 × 2.5 screws (1) and the Phillips M2.0 × 2.0 screw (2) that secures the
touchpad bracket to the computer.
Component replacement procedures 45