Lenovo A540 Lenovo A540/A740 Hardware Maintenance Manual - Page 28

Replacingthekeyboardandmouse

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Replacing the keyboard and mouse Attention: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. To replace the keyboard and mouse Step 1. Step 2. Step 3. Remove any media (disks, CDs, DVDs or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices. Unplug all power cords from electrical outlets. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O) cables, and any other cables that are connected to the computer. Refer to "Left and right view" and "Rear view" for help with locating the various connectors. Step 4. Note: Your keyboard will be connected to a USB connector on one side or at the rear of the computer. Disconnect the defective keyboard cable from the computer and connect the new keyboard cable to the same connector. Note: The mouse can be replaced using the same method. Replacing the power cord or power adapter Attention: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. To replace the power cord and power adapter: Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices. 22 Lenovo A540/A740Hardware Maintenance Manual

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Replacingthekeyboardandmouse
Attention:
Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
Toreplacethekeyboardandmouse
Step 1.
Remove any media (disks, CDs, DVDs or memory cards) from the drives, shut down the operating
system, and turn off the computer and all attached devices.
Step 2.
Unplug all power cords from electrical outlets.
Step 3.
Disconnect all cables attached to the computer. This includes power cords, input/output (I/O)
cables, and any other cables that are connected to the computer. Refer to “Left and right view”
and “Rear view” for help with locating the various connectors.
Note:
Your keyboard will be connected to a USB connector on one side or at the rear of the
computer.
Step 4.
Disconnect the defective keyboard cable from the computer and connect the new keyboard cable
to the same connector.
Note:
The mouse can be replaced using the same method.
Replacingthepowercordorpoweradapter
Attention:
Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
Toreplacethepowercordandpoweradapter:
Step 1.
Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating
system, and turn off the computer and all attached devices.
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Lenovo A540/A740Hardware Maintenance Manual