User Manual

Table Of Contents

Chapter 7. FRU replacement notices

Read this chapter carefully before replacing any FRU.

Service tool kit

Ensure that the following service tool kit is prepared before you service a notebook computer.

No. Tool name Tool type

1 Phillips-head screwdriver Common tool

Conductive tweezers Common tool

Silicone grease Consumable tool

4 Polyamide tape

Consumable tool

Mylar tape Consumable tool

6 Eraser

Consumable tool

Electrical tape

Consumable tool

8 Double-sided tape

Consumable tool

Conductive tape Consumable tool

Trackpad jig (this might come with trackpad) Consumable tool

Note: The silicone grease can be applied to the surfaces of the microprocessor and heatsink to eliminate air

gaps.

Screw notices

Loose screws can cause a reliability problem. In your computer, this problem is addressed with special

nylon-coated screws that have the following characteristics:

• They maintain tight connections.

• They do not easily come loose, even with shock or vibration.

• They are harder to tighten.

Do the following when you service the computer:

• Keep the screw kit in your tool bag. For the part number of the screw kit, go to:

https://support.lenovo.com/partslookup

Tighten screws as follows:

• Plastic to plastic

Turn an additional angle of 90 degrees after the screw head touches the surface of the plastic part.