Lenovo 4229, 4223, 4228 manual Closing the microprocessor retainer

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12.Carefully lift the failing system board out of the chassis.

13.Position the new system board into the chassis so that the screw holes in the new system board are aligned with those in the chassis. Install the ten screws that secure the system board to the chassis by following the sequence from 10 to 1 .

14.Remove the microprocessor socket cover(s) from the new system board.

15.Install the memory modules, PCI cards, battery, microprocessor, heat sink and fan assembly, hard disk drive enablement module (if applicable), and the hard disk drive fan assembly that you removed from the failing system board to the new system board.

16.Connect all cables to the system board. See “Locating parts on the system board” on page 58.

17.Go to “Completing the parts replacement” on page 104.

The failing system board must be returned with microprocessor socket covers to protect the pins during shipping and handling. Install the microprocessor socket covers removed from the new system board on the failing system board.

Note: The microprocessor socket cover installation procedure should be performed on both microprocessor sockets on the failing system board.

To install the microprocessor socket cover on the failing system board:

1. Pivot the microprocessor retainer downward to close the retainer.

Figure 52. Closing the microprocessor retainer

2.Gently press down the small handle 1 , and then push the handle inward to secure it. Then gently press down the small handle 2 and push the handle inward to lock the microprocessor retainer into position.

Chapter 10. Replacing FRUs 101

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Contents ThinkStation Hardware Maintenance Manual Page ThinkStation Hardware Maintenance Manual First Edition April Copyright Lenovo Contents Appendix A. Notices 109 About this manual Important Safety InformationThinkStation Hardware Maintenance Manual Electrical safety Safety informationGeneral safety ThinkStation Hardware Maintenance Manual Safety inspection guide Voltage-selection switchGrounding requirements Safety notices multi-lingual translationsHandling electrostatic discharge-sensitive devices To Connect To Disconnect ≥18 kg 37 lbs ≥32 kg 70.5 lbs ≥55 kg 121.2 lbs Safety information ≥18 kg 37 lbs ≥32 kg 70.5 lbs ≥55 kg 121.2 lbs Para Conectar Para Desconectar PerigoPrecaución Safety information ThinkStation Hardware Maintenance Manual Safety information ThinkStation Hardware Maintenance Manual Connexion Déconnexion Vorsicht Achtung Arbeitsschutzrichtlinien beim Anheben der Maschine beachten Safety information Pericolo Per collegarsi Per scollegarsi AttenzionePrestare attenzione nel sollevare lapparecchiatura Safety information Peligro No debe Adopte procedimientos seguros al levantar el equipo Lenovo ThinkVantage Tools SpecificationsGeneral information Lenovo Welcome Lenovo Solution CenterProduct Recovery ThinkVantage Rescue and RecoveryAdditional information resources ThinkStation Hardware Maintenance Manual General Checkout Problem determination tipsThinkStation Hardware Maintenance Manual Diagnostics ThinkStation Hardware Maintenance Manual Using passwords Using the Setup Utility programStarting the Setup Utility program Viewing and changing settingsHard Disk Password Password considerationsPower-On Password Administrator 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 Hardware Maintenance Manual Installing Sata or SAS hard disk drives Configuring RAIDConfiguring RAID with Intel RSTe Entering the Intel RSTe configuration utility RAID Level Installing Sata or SAS hard disk drives Entering the LSI MegaRAID Bios configuration utility Setting the hot spare hard disk drive Beep symptoms Symptom-to-FRU IndexHard disk drive boot error Power Supply ProblemsLong and 9 short beeps Bios ROM error Post error codesBeep Symptom FRU/Action Long and 3 short beeps Keyboard errorMessage/Symptom FRU/Action Miscellaneous error messagesPost Error Message Description/Action Check power supply and signal cable connections Second device hard disk Undetermined problemsFirst device network ThinkStation Hardware Maintenance Manual Locations Front connector, control, and indicator locationsLocating major FRUs and CRUs Locating connectors on the rear of your computerLocating major FRUs and CRUs Number FRU description Self-service CRU Optional-service CRU System board part locations ThinkStation Hardware Maintenance Manual Drive bay locations Locating internal drivesThinkStation Hardware Maintenance Manual Handling static-sensitive devices Installing or replacing hardwareInstalling external options Replacing FRUsRemoving the computer cover Removing the computer cover Removing and reinstalling the front bezelWhat to do next Installing or replacing a PCI cardOpening the PCI card retainer Removing a PCI card Installing or replacing a memory module Removing the memory fan duct Removing a memory module Installing a memory module Installing or replacing the optical driveRemoving the optical drive Installing the optical drive retainer Replacing the card reader Connecting the optical driveRemoving the card reader Installing the card reader Replacing the batteryRemoving the old battery Replacing the heat sink and fan assemblyRemoving the heat sink and fan assembly Replacing the hard disk drive fan assembly Removing the hard disk drive fan assembly Replacing the rear fan assemblyRemoving the rear fan assembly Installing the rear fan assembly Installing or replacing a hard disk driveRemoving the hard disk drive Installing the hard disk drive into the bracket Installing the hard disk drive Removing the hard disk drive enablement module Installing or replacing a hard disk drive enablement moduleInstalling a new hard disk drive enablement module Replacing the front audio and USB assemblyReplacing the internal speaker Removing the internal speaker Installing or replacing the microprocessorInstalling the second microprocessor Opening the handles Removing the microprocessor Installing the microprocessor Replacing a microprocessor Opening the handles Opening the microprocessor retainer Do not touch the pins Replacing the system board ThinkStation Hardware Maintenance Manual Closing the microprocessor retainer Installing the microprocessor socket cover Replacing the power supply assemblyRemoving six screws that secure the power supply assembly Completing the parts replacement Additional service information Recovering from a POST/BIOS update failure Updating flashing the Bios from your operating systemSystem memory speed Power managementAutomatic configuration and power interface Acpi Bios Automatic Power-On featuresDimm operating voltage Microprocessor model Memory frequency Appendix A. Notices Trademarks Television output noticeEuropean conformance CE mark 111 IndexReplacing Battery
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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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