Lenovo THINKPAD T41/T41P Bedienungsanleitung PDF herunterladen (Seite 72)

FRU replacement notices

This section contains notices related to removing and

replacing parts. Read this section carefully before replacing

any FRU.

Screw notices

Loose screws can cause a reliability problem. In the

ThinkPad computer, this problem is addressed with special

nylon-coated screws that have the following characteristics:

v They maintain tight connections.

v They do not easily come loose, even with shock or

vibration.

v They are harder to tighten.

v Each one should be used only once.

the following when you service this machine:

v Keep the screw kit (for the P/N, see “Miscellaneous

parts” on page 243) in your tool bag.

v Always use new screws.

v Use a torque screwdriver if you have one.

Tighten

screws as follows:

v Plastic to plastic

Turn an additional 90 degrees after the screw head

touches the surface of the plastic part:

90 degrees more

(Cross-section)

v Logic card to plastic

Turn an additional 180 degrees after the screw head

touches the surface of the logic card:

180 degrees more

(Cross-section)

v Torque driver

If you have a torque driver, refer to the “Torque” column

for each step.

FRU replacement notices

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Lenovo THINKPAD T41/T41P Bedienungsanleitung Seite 72