Installing the I/O Board

1.Place the I/O board on the computer.

2.Tighten the screw to secure the I/O board to the computer.

3.Install:

a.Base frame

b.Keyboard

c.System Fan

d.WLAN Card

e.Hard Drive

f.Battery

g.Base Cover

4.Follow the procedures in After Working Inside Your computer.

Removing the Coin-Cell Battery

1.Follow the procedures in Before Working Inside Your Computer.

2.Remove:

a.Base Cover

b.Battery

c.Hard Drive

d.WLAN Card

e.System Fan

f.Keyboard

g.Base frame

3.Perform the following steps as shown in the illustration:

a.Disconnect the coin-cell cable from the computer [1].

b.Lift the coin-cell battery from the computer [2].

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Dell 3550 owner manual Installing the I/O Board, Removing the Coin-Cell Battery