Lenovo A720 Lenovo IdeaCentre A720 Hardware Maintenance Manual (English) - Page 37

Removing the base cover, Disconnect all cables attached to the computer. This includes power cords - screen replacement

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Step 2. Locate the connector for the power cord. Refer to "Rear view". Step 3. Disconnect the failing power cord and adapter from the computer and connect the new power cord and adapter to the same connector. Removing the base cover Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. Note: It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo recommends that you use a blanket, towel, or other soft cloth to protect the computer screen from scratches or other damage. To remove the base cover Step 1. Step 2. Step 3. Step 4. 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. Place the computer face-down on a soft flat surface, then remove the 7 screws that secure the base cover to the base. Chapter 8. Replacing hardware 31

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Step 2.
Locate the connector for the power cord. Refer to “Rear view”.
Step 3.
Disconnect the failing power cord and adapter from the computer and connect the new power cord
and adapter to the same connector.
Removing the base cover
Note:
Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
Note:
It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo
recommends that you use a blanket, towel, or other soft cloth to protect the computer screen from scratches
or other damage.
To remove the base cover
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.
Step 4.
Place the computer face-down on a soft flat surface, then remove the 7 screws that secure the
base cover to the base.
Chapter 8
.
Replacing hardware
31