Lenovo 4223, 4228, 4229 manual Replacing the system board, Closing the microprocessor retainer

Page 105

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

Figure 49. Closing the microprocessor retainer

13.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 and secure the new microprocessor in the socket.

Note: There are two marks on the microprocessor retainer. Ensure that you close the small handle

marked with first, and then close the small handle marked with . Always follow the correct sequence when you close the small handles.

Figure 50. Securing the microprocessor in the socket

14.Reinstall the heat sink and fan assembly. See “Replacing the heat sink and fan assembly” on page 78.

15.If you are instructed to return the old microprocessor, follow all packaging instructions and use any packaging materials that are supplied to you for shipping.

16.To complete the replacement, go to “Completing the parts replacement” on page 104.

Replacing the system board

Attention: Do not open your computer or attempt any repair before reading and understanding the “Important Safety Information” on page 1.

This section provides instructions on how to replace the system board.

Chapter 10. Replacing FRUs 99

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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 Safety information General safetyElectrical safety ThinkStation Hardware Maintenance Manual Safety inspection guide Voltage-selection switchSafety notices multi-lingual translations Handling electrostatic discharge-sensitive devicesGrounding requirements 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 Specifications General informationLenovo ThinkVantage Tools Product Recovery Lenovo Solution CenterThinkVantage Rescue and Recovery Lenovo WelcomeAdditional information resources ThinkStation Hardware Maintenance Manual General Checkout Problem determination tipsThinkStation Hardware Maintenance Manual Diagnostics ThinkStation Hardware Maintenance Manual Starting the Setup Utility program Using the Setup Utility programViewing and changing settings Using passwordsPower-On Password Password considerationsAdministrator Password Hard Disk PasswordErasing lost or forgotten passwords clearing Cmos Enabling or disabling a deviceSelecting a startup device Enabling ErP compliance mode and Deep Sx Selecting a temporary startup deviceSelecting or changing the startup device sequence Exiting the Setup Utility program ThinkStation Hardware Maintenance Manual Configuring RAID Configuring RAID with Intel RSTeInstalling Sata or SAS hard disk drives 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 Hard disk drive boot error Symptom-to-FRU IndexPower Supply Problems Beep symptomsBeep Symptom FRU/Action Post error codesLong and 3 short beeps Keyboard error Long and 9 short beeps Bios ROM errorMiscellaneous error messages Post Error Message Description/ActionMessage/Symptom FRU/Action Check power supply and signal cable connections Undetermined problems First device networkSecond device hard disk 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 Installing external options Installing or replacing hardwareReplacing FRUs Handling static-sensitive devicesRemoving 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 systemAutomatic configuration and power interface Acpi Bios Power managementAutomatic Power-On features System memory speedDimm operating voltage Microprocessor model Memory frequency Appendix A. Notices Television output notice European conformance CE markTrademarks 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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