FRU replacement notices
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. An IBM ThinkPad computer addresses this problem with special
vThey maintain tight connections.
vThey do not easily come loose, even with shock or vibration.
vThey are harder to tighten.
vThey should be used only once.
Do the following when you service this machine:
vKeep the screw kit (for the P/N, see “Miscellaneous parts” on page 141) in your tool bag.
vAlways use new screws.
vUse a torque screwdriver if you have one.
Tighten screws as follows:
vPlastic to plastic
Turn an additional 90 degrees after the screw head touches the surface of the plastic part:
vLogic card to plastic
Turn an additional 180 degrees after the screw head touches the surface of the logic card:
vTorque driver
If you have a torque driver, refer to the “Torque” column for each step.