Step 18. Use a flat head screwdriver as a lever to prise out the battery as shown.

Step 19. To install the new motherboard:

a.Insert the battery (CR2032) into the socket with the side labeled “+” facing up, and press the battery into place.

b.Insert the notched end of the TV-Tuner card into the card port on the new motherboard and secure it with the 2 screws.

c.Connect the antenna cable(s) to the TV-Tuner card.

d.Line up the new motherboard with the chassis and slide it into position. Align the holes on the new motherboard with the mounting holes on the chassis and secure it to the chassis with the screws.

e.Attach the optical drive eject board, solid state disk, optical drive, CPU, heat-sink, system fan, memory module, hard disk drive to the new motherboard.

f.Connect all the cables to the new motherboard.

Step 20. Reattach the base cover and secure it with the screws.

Replacing the speaker system

Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.

To replace the speaker system:

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. Remove the base cover. Refer to “Removing the base cover”.

Step 5. Remove the hard disk drive. Refer to “Replacing the hard disk drive”.

Step 6. Remove the heat-sink. Refer to “Replacing the heat-sink”.

Step 7. Remove the optical drive. Refer to “Replacing the optical drive”.

Step 8. Remove the hinge from the chassis. Refer to “Removing the hinge from the chassis”.

Step 9. Disconnect the speaker cable from the connectors on the motherboard.

Chapter 8. Replacing hardware 43

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Lenovo A720 manual Replacing the speaker system, To replace the speaker system
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A720 specifications

The Lenovo A720 stands out as a versatile and stylish all-in-one PC that caters to both home entertainment and productivity needs. Launched as part of Lenovo's A-series lineup, it combines powerful performance with an elegant design, making it an appealing choice for users seeking a comprehensive computing solution.

One of the key features of the Lenovo A720 is its stunning 27-inch display, which boasts a Full HD resolution of 1920 x 1080 pixels. This high-quality display delivers crisp images and vibrant colors, enhancing the overall viewing experience for movies, games, and graphic design tasks. The A720 also comes equipped with multi-touch technology, allowing users to interact with the screen intuitively, facilitating seamless navigation and control.

Under the hood, the Lenovo A720 is powered by Intel's third-generation Core processors, which provide robust performance for multitasking and demanding applications. Depending on the configuration, users can choose between various processor options, including Core i5 and i7, ensuring that they have sufficient processing power for their specific requirements. Coupled with up to 16GB of RAM, the A720 can handle multiple applications running simultaneously, making it an excellent choice for multitaskers.

The A720's storage options include a hybrid of traditional hard drives and solid-state drives, allowing for both capacity and speed. With up to 1TB of storage space available, users can store their files, media, and applications without worrying about running out of space. The integration of SSD technology enhances boot and load times, ensuring a snappy user experience.

For connectivity, the Lenovo A720 offers a wide array of ports, including USB 3.0, HDMI, and audio jacks, making it easy to connect peripherals and external devices. Additionally, it features integrated Wi-Fi and Bluetooth capabilities, enabling seamless wireless connectivity for internet access and file sharing.

Another notable aspect of the Lenovo A720 is its sleek aesthetic, featuring a thin profile and a stand that allows for adjustment of the screen angle. This design not only enhances the aesthetic appeal of the device but also provides ergonomic benefits for prolonged usage.

In conclusion, the Lenovo A720 is a well-rounded all-in-one PC that combines impressive display quality, powerful performance, and modern connectivity options. Its multi-touch screen, strong processing capabilities, and stylish design make it a great choice for both casual users and professionals looking for a comprehensive solution for work and entertainment. Whether for watching movies, playing games, or executing productivity tasks, the Lenovo A720 delivers an exceptional experience.
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