Lenovo 4229, 4223, 4228 Glare and lighting, Air circulation, Electrical outlets and cable lengths

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Adjust the monitor so the top of the screen is at, or slightly below, eye level. Place the monitor at a comfortable viewing distance, usually 51 to 61 cm (20 to 24 inches), and position it so you can view it without having to twist your body. Also, position other equipment you use regularly, such as the telephone or a mouse, within easy reach.

Glare and lighting

Position the monitor to minimize glare and reflections from overhead lights, windows, and other light sources. Reflected light from shiny surfaces can cause annoying reflections on your monitor screen. Place the monitor at right angles to windows and other light sources, when possible. Reduce overhead lighting, if necessary, by turning off lights or using lower wattage bulbs. If you install the monitor near a window, use curtains or blinds to block the sunlight. You can adjust the brightness and contrast controls on the monitor as the room lighting changes throughout the day.

Where it is impossible to avoid reflections or to adjust the lighting, an antiglare filter placed over the screen might be helpful. However, these filters might affect the clarity of the image on the screen; try them only after you have exhausted other methods of reducing glare.

Dust buildup compounds problems associated with glare. Remember to clean your monitor screen periodically using a soft cloth as directed in your monitor documentation.

Air circulation

Your computer and monitor produce heat. The computer has a fan that pulls in fresh air and forces out hot air. The monitor lets hot air escape through vents. Blocking the air vents can cause overheating, which might result in a malfunction or damage. Place the computer and monitor so that nothing blocks the air vents; usually, 51 mm (2 inches) of air space is sufficient. Also, make sure the vented air is not blowing on people.

Electrical outlets and cable lengths

The location of electrical outlets, the length of power cords and cables that connect to the monitor, printer, and other devices might determine the final placement of your computer.

When arranging your workspace:

•Avoid the use of extension cords. When possible, plug the computer power cord directly into an electrical outlet.

•Keep power cords and cables neatly routed away from walkways and other areas where they might get kicked accidentally.

For more information about power cords, see “Power cords and power adapters” on page vi.

20ThinkStation User Guide

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Contents ThinkStation User Guide First Edition April Copyright Lenovo Contents Using the Setup Utility Program Appendix A. System memory Speed 107 Appendix B. Notices 109 Iv ThinkStation User Guide Static electricity prevention Important safety informationService and upgrades Power cords and power adapters Extension cords and related devicesHeat and product ventilation Plugs and outletsExternal devices Modem safety information Operating environmentLaser compliance statement Power supply statementCleaning and maintenance ThinkStation User Guide Features Product overviewConnectivity System management featuresInput/Output I/O features Power supply Security featuresPreinstalled software programs Preinstalled operating systemSpecifications DimensionsSoftware overview Software provided by LenovoLocations ThinkVantage Rescue and RecoveryAdobe Reader Antivirus software Front connector, control, and indicator locations Locating connectors on the rear of your computer Connector DescriptionConnector Locating componentsLocating parts on the system board System board part locationsProduct overview Locating internal drives Drive bay locationsMachine type and model label Machine type and model labelThinkStation User Guide Using your computer Frequently asked questionsUsing the keyboard Using Windows shortcut keysUsing the blue ThinkVantage button Using the wheel mouseAdjusting audio About your computer audioSetting the volume from the desktop Setting the volume from Control PanelUsing CDs and DVDs Adding the volume icon to the taskbarPlaying a CD or DVD Recording a CD or DVDAccessibility and comfort You and your computerArranging your workspace ComfortElectrical outlets and cable lengths Glare and lightingAir circulation Moving your computer to another country or region Replacement power cordsRegister your computer with Lenovo ThinkStation User Guide Locking the computer cover Security featuresSecurity Installing a padlock Locking the computer coverInstalling a padlock Attaching an integrated cable lock Using passwordsBios passwords Protecting data against viruses Windows passwordsUsing and understanding firewalls ThinkStation User Guide Installing or replacing hardware Installing or replacing hardwareInstalling external options Handling static-sensitive devicesRemoving the computer cover Removing the computer coverRemoving and reinstalling the front bezel What to do nextInstalling or replacing a PCI card Opening the PCI card retainerRemoving a PCI card Installing or replacing a memory module Removing the memory fan duct Removing a memory module Installing or replacing the optical drive Installing a memory moduleRemoving the optical drive Installing the optical drive retainer Connecting the optical drive Replacing the card readerRemoving the card reader Replacing the battery Installing the card readerReplacing the heat sink and fan assembly Removing the old batteryRemoving the heat sink and fan assembly Replacing the hard disk drive fan assembly Replacing the rear fan assembly Removing the hard disk drive fan assemblyRemoving the rear fan assembly Installing or replacing a hard disk drive Installing the rear fan assemblyRemoving the hard disk drive Installing the hard disk drive into the bracket Installing the hard disk drive Installing or replacing a hard disk drive enablement module Removing the hard disk drive enablement moduleReplacing the front audio and USB assembly Installing a new hard disk drive enablement moduleReplacing the internal speaker Replacing the keyboard or mouse Removing the internal speakerCompleting the parts replacement Connecting the USB keyboard or mouseObtaining device drivers ThinkStation User Guide Creating recovery media Recovery informationCreating and using recovery media Performing a backup operation Using recovery mediaPerforming backup and recovery operations Click the Restore your system from a backup icon Performing a recovery operationUsing the Rescue and Recovery workspace Creating a rescue medium Creating and using a rescue mediumUsing a rescue medium Reinstalling preinstalled device drivers Reinstalling preinstalled applications and device driversReinstalling preinstalled applications Solving recovery problems Reinstalling software programsReinstalling device drivers Recovery information ThinkStation User Guide Viewing and changing settings Using the Setup Utility programStarting the Setup Utility program Password considerations Power-On PasswordAdministrator Password Hard Disk PasswordSelecting a startup device Erasing lost or forgotten passwords clearing CmosEnabling or disabling a device Selecting or changing the startup device sequence Enabling ErP compliance mode and Deep SxSelecting a temporary startup device Exiting the Setup Utility program ThinkStation User Guide Installing Sata or SAS hard disk drives Configuring RAIDConfiguring RAID with Intel RSTe Entering the Intel RSTe configuration utility Resetting hard disk drives to non-RAID RAID LevelInstalling Sata or SAS hard disk drives Entering the LSI MegaRAID Bios configuration utility Setting the hot spare hard disk drive Updating system programs Using system programsUpdating flashing the Bios from a disc Click Downloads and drivers Updating flashing the Bios from your operating systemRecovering from a POST/BIOS update failure Preventing problems Using System UpdateKeeping your computer current Getting the latest device drivers for your computerBasics Cleaning your computer ComputerKeyboard Optical mouseMoving your computer Good maintenance practicesCleaning a glass-screen surface Troubleshooting and diagnostics Basic troubleshootingTroubleshooting procedure TroubleshootingAudio problems No audio in WindowsNo audio in DOS applications or games CD problemsSound comes from one external speaker only Black screen instead of DVD video DVD problemsCD or DVD does not work DVD movie will not play No audio or intermittent audio while playing DVD moviePlayback is very slow or choppy Invalid disc or no disc found messageHard disk drive problems Intermittent problems Keyboard, mouse, or pointing device problemsAll or some keys on the keyboard do not work Mouse or pointing device does not workMonitor problems Wireless keyboard does not workPointer on the screen does not move smoothly with the mouse Wrong characters appear on the screenImage appears to be flickering Networking problems Ethernet problemsImage is discolored Your computer cannot connect to the networkAdapter stops working for no apparent reason Option problemsWake on LAN feature is not working Performance and lockup problems An option that was just installed does not workAn option that previously worked does not work now Insufficient free hard disk drive spaceExcessive number of fragmented files Insufficient memory Printer problemsSerial port problems Software problems Software does not work as expectedUSB problems Lenovo Solution CenterThinkStation User Guide Getting information, help, and service Help and service Using the documentation and diagnostic programsCalling for service Lenovo Support Web siteUsing other services Purchasing additional servicesThinkStation User Guide Appendix A. System memory speed 107ThinkStation User Guide Appendix B. Notices 109Trademarks Appendix C. Regulatory information Export classification noticeElectronic emissions notices Federal Communications Commission Declaration of ConformityThinkStation User Guide Additional regulatory information ThinkStation User Guide Appendix D. Weee and recycling information Important information for the European Directive 2002/96/ECRecycling information 115Battery recycling information for Taiwan Recycling information for BrazilBattery recycling information for the European Union ThinkStation User Guide Index 119Installing options memory module PCI card 121 ThinkStation User Guide
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4229, 4223, 4228 specifications

Lenovo has long been recognized for its commitment to producing high-quality computing solutions, and the ThinkPad line is no exception. Among its various models, the Lenovo ThinkPad series 4228, 4223, and 4229 stand out for their robust features and reliable performance, making them ideal choices for business and professional use.

The Lenovo ThinkPad 4228 series is engineered with a focus on durability and performance. One of its key features is the powerful Intel Core processor range, which ensures that users can manage demanding applications and multitask efficiently. Alongside this, the device typically comes equipped with ample RAM, providing speed and responsiveness that enhances productivity.

Moving to the ThinkPad 4223, it streamlines user experience with advanced connectivity options. The inclusion of multiple USB ports, HDMI, and Ethernet capabilities allows for seamless integration with various devices and networks. The 4223 model often houses a backlit keyboard, enabling users to work effortlessly in low-light environments. This model puts a strong emphasis on portability, making it a reliable companion for professionals on the move.

The ThinkPad 4229 takes connectivity a step further by offering options like Wi-Fi 6 and Bluetooth, ensuring fast and stable connections whether in the office or on the go. This model is often equipped with a higher resolution display, contributing to a better viewing experience for video conferencing and presentations. Its extended battery life is a notable feature, allowing users to remain productive without the constant need for recharging.

All three models in the 422x series boast Lenovo’s robust security features, including fingerprint readers and TPM (Trusted Platform Module), which safeguard sensitive data against unauthorized access. Furthermore, the reputation of Lenovo ThinkPads for their exceptional keyboard layout ensures that users can type comfortably over extended periods, reducing strain and increasing efficiency.

In summary, the Lenovo ThinkPad 4228, 4223, and 4229 models represent a blend of power, durability, and user-friendly design. With their focus on connectivity, performance, and security, these laptops cater perfectly to the needs of professionals and businesses, confirming Lenovo's status as a leading manufacturer in the world of computing technology. Whether you need a rugged workhorse for heavy tasks or a portable device for meetings, the ThinkPad series provides versatile solutions to meet any requirement.
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