Lenovo ideapad 320 Hardware Maintenance Manual

Also see for ideapad 320: User guide Hardware Maintenance Manual User guide Hardware Maintenance Manual User guide

34ideapad 320-14IAP/ideapad 320-14AST/ideapad 320-15IAP/ideapad 320-15AST/ideapad320-15ABR/ideapad 320-15ABR Touch Hardware Maintenance ManualRemoving and replacing an FRUThis section presents exploded figures with the instructions to indicate how toremove and replace the FRU. Make sure to observe the following general rules:1. Do not attempt to service any computer unless you have been trained andcertified. An untrained person runs the risk of damaging parts.2. Before replacing any FRU, review “FRU replacement notices” on page 33.3. Begin by removing any FRUs that have to be removed before the failingFRU. Any of such FRUs are listed at the top of the page. Remove them inthe order in which they are listed.4. Follow the correct sequence in the steps to remove the FRU, as given in thefigures by the numbers in square callouts.5. When turning a screw to replace an FRU, turn it in the direction as given bythe arrow in the figure.6. When removing the FRU, move it in the direction as given by the arrow inthe figure.7. To put the new FRU in place, reverse the removal procedures and followany of the notes that pertain to replacement. For information aboutconnecting and arranging internal cables, see “Locations” on page 68.8. When replacing an FRU, use the correct screw as shown in the procedures.DANGERBefore removing any FRU, turn off the computer, unplug all power cords fromelectrical outlets, remove the battery pack, and then disconnect any of theinterconnecting cables.Attention: After replacing an FRU, do not turn on the computer until you havemade sure that all screws, springs, and other small parts are in place and noneare loose inside the computer. Verify this by shaking the computer gently andlistening for rattling sounds. Metallic parts or metal flakes can cause electricalshort circuits.Attention: The system board is sensitive to, and can be damaged by,electrostatic discharge. Before touching it, establish personal grounding bytouching a ground point with one hand or using an electrostatic discharge (ESD)strap (P/N 6405959) to remove potential shock reasons.