Lenovo TAB S8-50 Hardware Maintenance Manual - Page 27

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FRU replacement notices

This section presents notices related to removing and replacing parts. Read this

section carefully before replacing any FRU.

Loose screws can cause a reliability problem. In the Lenovo 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.

• Each one should be used only once.

Do the following when you service this machine:

• Keep the screw kit in your tool bag.

• Always use new screws.

• Use a torque screwdriver if you have one.

Tighten screws as follows:

• Plastic to plastic

• Logic card to plastic

• Torque driver

• Make sure that you use the correct screws. If you have a torque screwdriver,

• Ensure torque screwdrivers are calibrated correctly following country

Turn an additional 90° after the screw head touches the surface of the plastic

part:

Turn an additional 180° after the screw head touches the surface of the logic

card:

If you have a torque screwdriver, refer to the "Torque" column for each step.

tighten all screws firmly to the torque shown in the table. Never use a screw

that you removed. Use a new one. Make sure that all screws are

tightened firmly.

Lenovo TAB S8-50

more than 90°

(Cross-section)

more than 180°

(Cross-section)