ThinkPad R500の取扱説明書・マニュアル [全226ページ 6.93MB]
43y6631_02.pdf
gizport - 2014-02-26
http://download.lenovo.com/.../43y6631_02.pdf - 6.93MB
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Removing and replacing a FRUThis chapter presents directions and drawings for use in removing and replacing aFRU. Be sure to observe the following general rules:1.Do not try to service any computer unless you have been trained and certified.An untrained person runs the risk of damaging parts.2.Before replacing any FRU, review "FRU replacement notices" on page 79.3.Begin by removing any FRUs that have to be removed before the failing FRU.Any such FRUs are listed at the top of the page. Remove them in the order inwhich they are listed.4.Follow the correct sequence in the steps for removing the FRU, as given in thedrawings by the numbers in square callouts.5.When turning a screw to replace a FRU, turn it in the direction as given by thearrow in the drawing.6.When removing the FRU, move it in the direction as given by the arrow in thedrawing.7.To put the new FRU in place, reverse the removal procedure and follow anynotes that pertain to replacement. For information about connecting andarranging internal cables, see "Locations" on page 137.8.When replacing a FRU, use the correct screw as shown in the procedures.DANGERBefore removing any FRU, turn off the computer, unplug all power cordsfrom electrical outlets, remove the battery pack, and then disconnect anyinterconnecting cables.Attention:After replacing a FRU, do not turn on the computer until you havemade sure that all screws, springs, and other small parts are in place and none areloose inside the computer. Verify this by shaking the computer gently and listeningfor rattling sounds. Metallic parts or metal flakes can cause electrical short circuits.Attention:The system board is sensitive to, and can be damaged by, electrostaticdischarge. Before touching it, establish personal grounding by touching a groundpoint with one hand or by using an electrostatic discharge (ESD) strap (P/N6405959).(C) Copyright Lenovo 2008, 2009 83
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