Lenovo 3091, 3265, 4285, 870, 852, 800, 5205, 5248, 3678, 3650, 3429, 3373, 2557 Removing the power supply

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7.Remove the four screws 1 that secure the power supply and then remove the two screws 2 that secure the power cord connector bracket. Note the routing of the power cord connector cable 3 . Lift the power supply up to remove it from the computer main bracket.

Figure 37. Removing the power supply

8.Remove the two screws 4 (as shown in Removing the power supplyFigure 37 on page 48) that secure the power cord connector and then remove the power cord connector from the power cord connector bracket.

9.Install the two screws to secure the new power cord connector to the power cord connector bracket.

10.Position the new power supply in the computer and align the four screw holes in the new power supply with those in the computer main bracket. Install the four screws to secure the new power supply.

11.Route the new power cord connector cable and then position the power cord connector bracket on the bottom of the computer main bracket.

12.Align the two screw holes in the power cord connector bracket with those in the computer main bracket and install the two screws to secure the power cord connector bracket.

13.Connect the new power supply cable to the power supply connector on the system board. See “System board part and connector locations” on page 12.

14.Reinstall the hard disk drive. See “Replacing the hard disk drive” on page 25.

15.Reinstall the rear I/O assembly cover. See “Removing or reinstalling the rear I/O assembly cover” on page 19.

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 52.

48ThinkCentre User Guide

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Contents ThinkCentre User Guide Page ThinkCentre User Guide Second Edition May Copyright Lenovo Contents Appendix A. Notices Important safety information Vi ThinkCentre User Guide Features Product overviewConnectivity Copyright Lenovo Specifications Operating system edition Supported touch featureComputer weight Software overview Software provided with your Windows operating systemLocating computer controls, connectors, and parts Lenovo ThinkVantage ToolboxUsing your computer in monitor mode Front viewRear view Icon Control DescriptionConnector Description Component locations Component locationsSystem board part and connector locations System board part and connector locationsProduct overview ThinkCentre User Guide Installing or replacing hardware Installing or replacing hardwareInstalling external options Installing a computer wall mountRemoving or reinstalling the frame stand Removing the computer coverRemoving or reinstalling the lift stand What to do nextRemoving the lift stand Removing or reinstalling the rear I/O assembly cover Reinstalling the lift standRemoving or reinstalling the Vesa frame cover Removing the rear I/O assembly coverRemoving or reinstalling the Vesa frame Removing the Vesa frame coverInstalling or replacing a memory module Removing the computer Vesa frameRemoving the memory module Replacing the battery Removing the batteryInstalling a new battery Replacing the hard disk driveRemoving the hard disk drive Installing the hard disk drive Replacing the optical drive Removing the optical driveInstalling the optical drive Replacing the heat sinkRemoving the fan duct Removing the heat sink Replacing the microprocessor Removing the microprocessor Replacing the WI-FI card Installing the microprocessorReplacing the Bluetooth module Removing the WI-FI cardRemoving the Bluetooth module Replacing the multi-touch boardReplacing the ambient light sensor Removing the multi-touch boardRemoving the ambient light sensor Replacing the ExpressCard Removing the ExpressCardReplacing the internal speakers Removing the internal speakersReplacing the integrated camera with microphone Replacing the microprocessor fan assembly Removing the integrated camera with microphoneRemoving the microprocessor fan assembly Replacing the card reader Removing the card readerReplacing the rear I/O assembly Removing the rear I/O assemblyReplacing the right I/O assembly Removing the right I/O assemblyReplacing the power supply Removing the power supply Replacing the keyboard Replacing the PS/2 or USB keyboardReplacing the mouse Replacing the PS/2 or USB mouseReplacing the wireless mouse Completing the parts replacement Obtaining device drivers Basic security features Integrated cable lockPassword protection Erasing lost or forgotten passwords clearing CmosInstalling or replacing hardware ThinkCentre User Guide Recovery information Creating and using recovery mediaCreating recovery media Using recovery mediaPerforming backup and recovery operations Performing a backup operationPerforming a recovery operation Using the Rescue and Recovery workspaceCreating and using a rescue medium Creating a rescue mediumUsing a rescue medium Installing or reinstalling device driversSolving recovery problems Using the Setup Utility program Starting the Setup Utility programViewing or changing settings Using passwordsPassword considerations Administrator passwordPower-on password Hard disk drive passwordEnabling or disabling a device Selecting a startup deviceSelecting a temporary startup device Viewing or changing the startup device sequenceExiting the Setup Utility program Updating system programs Using system programsUpdating flashing the Bios from a disc Updating flashing the Bios from your operating system Recovering from a POST/BIOS update failureUpdating system programs ThinkCentre User Guide Troubleshooting and diagnostic programs Basic troubleshootingDiagnostic programs Lenovo ThinkVantage ToolboxPC-Doctor for Rescue and Recovery PC-Doctor for DOSCleaning an optical mouse Getting information, help, and service Information resourcesOnline Books folder Lenovo ThinkVantage ToolsLenovo Welcome Access HelpSafety and warranty Copyright Lenovo Using other services Purchasing additional servicesAppendix A. Notices Television output notice European conformance CE mark TrademarksIndex CRULenovo ThinkVantage Toolbox Solving recovery problems ThinkCentre User Guide Page 89Y8034

852, 800, 3091, 3429, 5248 specifications

Lenovo has established a reputation for producing reliable and innovative technology solutions, particularly in the realm of computing. The models Lenovo 4285, 5205, 2471, 2557, and 3265 are prime examples of the brand's commitment to performance, efficiency, and user experience.

The Lenovo 4285 is known for its robust build and versatility. This laptop is equipped with a powerful processor, ensuring smooth performance for multitasking and resource-intensive applications. With a focus on portability, it features a lightweight design coupled with a long-lasting battery life, making it an ideal choice for professionals on the go. Additionally, the display boasts vibrant colors and sharp resolution, enhancing the multimedia experience.

In the realm of mid-range laptops, the Lenovo 5205 stands out with its impressive specifications. This model integrates advanced cooling technology, which prevents overheating during extended use. The ergonomic keyboard design is perfect for long typing sessions, providing comfort and efficiency. Furthermore, the inclusion of multiple connectivity options ensures seamless integration with various peripherals, making it a versatile choice for both work and entertainment.

For budget-conscious consumers, the Lenovo 2471 delivers exceptional value without compromising quality. This model is perfect for students and entry-level users, featuring a compact design and sufficient processing power for everyday tasks. It offers a reliable performance for web browsing, document editing, and video streaming. Lenovo’s emphasis on durability is evident, with the 2471 designed to withstand the rigors of daily use.

The Lenovo 2557 offers a blend of style and functionality. With a sleek profile and modern aesthetics, this laptop does not skimp on performance. It features a vibrant display paired with excellent audio output, making it suitable for streaming media and gaming. The device’s built-in security features, including biometric authentication, provide peace of mind for users concerned about data protection.

Lastly, the Lenovo 3265 is tailored for business professionals seeking efficiency and reliability. Boasting powerful processing capabilities and adequate storage options, this model is perfect for handling business applications and data analysis. Additionally, the Lenovo 3265 is equipped with advanced connectivity features, including Wi-Fi 6 support, ensuring fast and reliable internet access.

In summary, the Lenovo models 4285, 5205, 2471, 2557, and 3265 are diverse offerings that cater to various user needs—from students to professionals—combining performance, durability, and cutting-edge technology to enhance productivity and entertainment experiences.
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