Lenovo Removing and replacing an FRU, Lenovo IdeaPad S110 Hardware Maintenance Manual, Danger

Lenovo IdeaPad S110 Hardware Maintenance Manual

Removing and replacing an FRU

This section presents exploded figures with instructions indicating how to remove and replace an FRU. Make sure to observe the following general rules:

1.Do not attempt to service any computer unless you have been trained and certified. An untrained person may damage parts.

2.Before replacing any FRU, review the “FRU replacement notices” on page 29.

3.Start by removing any FRUs that must be removed to access the failing FRU. Any such FRUs are listed at the top of the page. Remove them in the order in which they are listed.

4.Follow the correct sequence of steps to remove the FRU, as given in the numbers in square boxes by the illustrations.

5.When turning a screw to replace an FRU, turn it in the direction indicated by the arrow in the illustration.

6.When removing an FRU, move it in the direction indicated by the arrow in the figure.

7.To put the new FRU in place carry out the removal procedure in reverse and pay attention to any notes pertaining to replacing the parts. For information about connecting and arranging internal cables, see “Locations” on page 59.

8.When replacing an FRU, use the correct screw as shown in the procedures.

DANGER

Before removing any FRU, turn off the computer, unplug all power cords from electrical outlets, remove the battery pack, and then disconnect any of the interconnecting cables.

Attention 1: After replacing an FRU, do not turn on the computer until you have made sure that all screws, springs, and other small parts are in place and none are loose inside the computer. Verify this by shaking the computer gently and listening for rattling sounds. Metallic parts or metal flakes can cause electrical short circuits.

Attention 2: The system board is sensitive to, and can be damaged by, electrostatic discharge. Before touching it, establish personal grounding by touching a ground point with one hand or using an electrostatic discharge (ESD) strap (P/N 6405959) to remove the risk of electrostatic shock.

30