Lenovo 4229, 4223, 4228 manual Replacing the hard disk drive fan assembly

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9.Follow the following sequence to install the four screws to secure each new heat sink and fan assembly. Do not over-tighten the screws.

a.Partially tighten screw

b.Partially tighten screw

1 , then fully tighten screw

3 , then fully tighten screw

2 , and then fully tighten screw

4 , and then fully tighten screw

1.

3.

10.Connect the heat sink and fan assembly cables to the microprocessor fan connectors on the system board. See “Locating parts on the system board” on page 58.

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 104.

Replacing the hard disk drive fan assembly

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 hard disk drive fan assembly.

To replace the hard disk drive fan assembly, do the following:

1.Turn off the computer and disconnect all power cords from electrical outlets.

2.Remove the computer cover. See “Removing the computer cover” on page 64.

3.Disconnect the hard disk drive fan assembly cable from the system board. See “Locating parts on the system board” on page 58.

4.Remove any parts that might prevent your access to the hard disk drive fan assembly. Depending on your computer model, you might need to remove the PCI Express x16 graphics card for easier access to the hard disk drive fan assembly. See “Installing or replacing a PCI card” on page 66.

80ThinkStation Hardware Maintenance Manual

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Contents ThinkStation Hardware Maintenance Manual Page ThinkStation Hardware Maintenance Manual First Edition April Copyright Lenovo Contents Appendix A. Notices 109 Important Safety Information About this manualThinkStation Hardware Maintenance Manual Electrical safety Safety informationGeneral safety ThinkStation Hardware Maintenance Manual Voltage-selection switch Safety inspection guideGrounding 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 Perigo Para Conectar Para DesconectarPrecaución 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 Attenzione Per collegarsi Per scollegarsiPrestare attenzione nel sollevare lapparecchiatura Safety information Peligro No debe Adopte procedimientos seguros al levantar el equipo Lenovo ThinkVantage Tools SpecificationsGeneral information ThinkVantage Rescue and Recovery Lenovo Solution CenterProduct Recovery Lenovo WelcomeAdditional information resources ThinkStation Hardware Maintenance Manual Problem determination tips General CheckoutThinkStation Hardware Maintenance Manual Diagnostics ThinkStation Hardware Maintenance Manual Viewing and changing settings Using the Setup Utility programStarting the Setup Utility program Using passwordsAdministrator Password Password considerationsPower-On 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 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 Power Supply Problems Symptom-to-FRU IndexHard disk drive boot error Beep symptomsLong and 3 short beeps Keyboard error Post error codesBeep Symptom FRU/Action Long and 9 short beeps Bios ROM 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 Front connector, control, and indicator locations LocationsLocating connectors on the rear of your computer Locating major FRUs and CRUsLocating major FRUs and CRUs Number FRU description Self-service CRU Optional-service CRU System board part locations ThinkStation Hardware Maintenance Manual Locating internal drives Drive bay locationsThinkStation Hardware Maintenance Manual Replacing FRUs Installing or replacing hardwareInstalling external options Handling static-sensitive devicesRemoving the computer cover Removing and reinstalling the front bezel Removing the computer coverInstalling or replacing a PCI card What to do nextOpening the PCI card retainer Removing 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 Installing or replacing the microprocessor Removing the internal speakerInstalling 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 Replacing the power supply assembly Installing the microprocessor socket coverRemoving six screws that secure the power supply assembly Completing the parts replacement Additional service information Updating flashing the Bios from your operating system Recovering from a POST/BIOS update failureAutomatic Power-On features Power managementAutomatic configuration and power interface Acpi Bios System memory speedDimm operating voltage Microprocessor model Memory frequency Appendix A. Notices Trademarks Television output noticeEuropean conformance CE mark Index 111Replacing 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.