Lenovo 3257, 3034, 6667, 5092, 5226, 4394, 3853 Replacing the internal speaker, Removing the heat sink

Page 27

Note: Carefully remove the four screws from the system board to avoid any possible damage to the system board. The four screws cannot be removed from the heat sink.

Figure 16. Removing the heat sink

5.Carefully lift the heat sink off the system board.

Notes:

a.You might have to gently twist the heat sink to free it from the microprocessor.

b.Do not touch the thermal grease while handling the heat sink.

6.Position the new heat sink on the system board so that the four screws are aligned with the holes on the system board.

7.Alternate tightening each screw a small and equal amount until the heat sink is secured to the system board. Do not over-tighten the screws.

What to do next:

•To work with another piece of hardware, go to the appropriate section.

•To complete the installation or replacement, go to “Completing the parts replacement” on page 25.

Replacing the internal speaker

Attention:

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide, go to:

http://www.lenovo.com/support

This section provides instructions on how to replace the internal speaker.

To replace the internal speaker, do the following:

1.Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer.

2.Open the computer cover. See “Opening the computer cover” on page 12.

Chapter 2. Installing or replacing hardware 19

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Contents ThinkCentre User Guide Page ThinkCentre User Guide First Edition October Copyright Lenovo Contents Appendix A. Notices Important safety information Viii ThinkCentre User Guide Product overview FeaturesExpansion Preinstalled software programs SpecificationsSoftware provided by Lenovo Software overviewThinkVantage Productivity Center Locations Locating connectors on the front of your computer Adobe ReaderAntivirus software Connector Description Locating connectors on the rear of your computerComponent locations Locating componentsSystem board part locations Locating parts on the system boardThinkCentre User Guide Handling static-sensitive devices Installing or replacing hardwareInstalling or replacing hardware Installing external optionsOpening the computer cover Removing and reinstalling the front bezelRemoving the front bezel Installing or replacing a memory moduleWhat to do next Replacing the hard disk driveRemoving the hard disk drive Removing the optical drive Replacing the optical driveInstalling the optical drive Replacing the batteryReplacing the heat sink Removing the old batteryRemoving the heat sink Replacing the internal speakerRemoving the internal speaker Replacing the front audio and USB assemblyRemoving the front audio and USB assembly Replacing the ac power adapterConnecting the ac power adapter Replacing the ac power adapter bracketRemoving the ac power adapter bracket Installing the ac power adapter into the new bracket Replacing the keyboard or mouse Completing the parts replacementIntegrated cable lock Installing security featuresErasing lost or forgotten passwords clearing Cmos Password protectionThinkCentre User Guide Recovery information Creating and using recovery mediaCreating recovery media Using recovery media Performing backup and recovery operationsPerforming a backup operation Using the Rescue and Recovery workspace Performing a recovery operationCreating a rescue medium Creating and using a rescue mediumInstalling or reinstalling device drivers Using a rescue mediumSolving recovery problems Using passwords Using the Setup Utility programStarting the Setup Utility program Viewing and changing settingsSetting, changing, and deleting a password Power-On PasswordAdministrator Password Hard Disk PasswordSelecting or changing the startup device sequence Exiting from the Setup Utility programSelecting a startup device Selecting a temporary startup deviceThinkCentre User Guide Using system programs Updating flashing the Bios from a discUpdating system programs Recovering from a POST/BIOS update failure Updating flashing the Bios from your operating systemBasic troubleshooting Troubleshooting and diagnosticsLenovo ThinkVantage Toolbox Diagnostic programsPC-Doctor for DOS PC-Doctor for Rescue and RecoveryCleaning an optical mouse Lenovo ThinkVantage Tools Getting information, help, and serviceInformation resources Online Books folderAccess Help Safety and WarrantyLenovo Welcome Help and service Using the documentation and diagnostic programsCalling for service Purchasing additional services Using other servicesAppendix A. Notices European conformance CE mark Trademarks Television output noticeCRU IndexRescue and Recovery workspace Page ThinkCentre User Guide Page 71Y7204

3244, 3131, 3257, 3142, 3307 specifications

Lenovo has always been a frontrunner in the computing industry, and their latest line of devices, including models 5226, 3557, 3131, 3257, and 3244, showcases their commitment to innovation, performance, and user-centric design. Each model is tailored to meet varying needs ranging from business professionals to casual users seeking reliable computing solutions.

The Lenovo 5226 is engineered with business users in mind. Its sleek design integrates powerful processing capabilities with security features like a fingerprint reader and TPM 2.0 for enhanced data protection. Equipped with the latest Intel Core processors, the 5226 ensures efficient performance, making multitasking seamless. Additionally, the display quality is top-notch, featuring a high-resolution screen that delivers vivid colors and sharp details, ideal for presentations and video conferencing.

Next, the Lenovo 3557 combines portability with functionality. Weighing less than its peers, this model is perfect for users on the go. The efficient battery life allows for extended use without needing a recharge, making it a suitable choice for students and professionals alike. The 3557 also features Lenovo's proprietary Rapid Charge technology, enabling quick recharges when time is of the essence.

The 3131 model stands out with its robust build and durability. Designed to withstand the rigors of daily use, this laptop features a spill-resistant keyboard and reinforced chassis, ensuring it can handle accidental drops or spills. With ample storage options and expansive RAM, it caters to users who require significant data handling, making it an excellent choice for creators and engineers.

For those looking for multimedia capabilities, the Lenovo 3257 brings a tantalizing display experience. With enhanced graphics and an immersive audio system, this model is ideal for entertainment and gaming. The inclusion of HDMI ports and multiple USB 3.0 ports facilitates easy connectivity to external devices, ensuring users can enjoy their favorite media on larger screens without hassle.

Lastly, the Lenovo 3244 focuses on providing value for money without compromising on performance. This model is equipped with a reliable processor and solid-state drive options that ensure quick boot times and fast data access. The energy-efficient design also contributes to longer battery life, making it an ideal choice for budget-conscious users who don’t want to sacrifice performance.

In summary, Lenovo's 5226, 3557, 3131, 3257, and 3244 models offer a diverse range of features that cater to different user requirements. From advanced business functionalities to entertainment options, Lenovo continues to leverage innovative technologies that enhance the overall computing experience.
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