Lenovo 21QJ00DRGE Hardware Maintenance Manual
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Lenovo 21QJ00DRGE Hardware Maintenance Manual

Lenovo 21QJ00DRGE Hardware Maintenance Manual

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ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6
AMD / ThinkPad T16 Gen 4 / ThinkPad P16s
Gen 4 AMD
Hardware Maintenance Manual

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  • Page 1 ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...
  • Page 4 First Edition (April 2025) © Copyright Lenovo 2025. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-...

  • Page 5: Table Of Contents

    ....Use Lenovo recovery options..Retaining the UUID... .
  • Page 6 Remove the keyboard ..System board ....117 Install the keyboard ... Replace the system board .

  • Page 7: About This Manual

    Some statements in this manual might not be applicable to the computer. • Before servicing a product, be sure to read all the information under Chapter 1 “Safety information” on page 1 and Chapter 2 “Important service information” on page 19. © Copyright Lenovo 2025...
  • Page 8 ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 9: Chapter 1. Safety Information

    • Fan louvers on the machine help to prevent overheating of internal components. Do not obstruct fan louvers or cover them with labels or stickers. Electrical safety Observe the following rules when working on electrical equipment. © Copyright Lenovo 2025...
  • Page 10 Important: • Use only approved tools and test equipment. Some hand tools have handles covered with a soft material that does not insulate you when working with live electrical currents. • Many customers have, near their equipment, rubber floor mats that contain small conductive fibers to decrease electrostatic discharges (ESD).

  • Page 11: Safety Inspection Guide

    4. Check for cracked or bulging batteries. 5. Remove the cover. 6. Check for any obvious non-ThinkPad / non-Lenovo alterations. Use good judgment as to the safety of any non-ThinkPad / non-Lenovo alterations. 7. Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage.

  • Page 12: Grounding Requirements

    2. Ensure that the ESD protective devices you use have been certified (ISO 9000) as fully effective. When handling ESD-sensitive parts: • Keep the parts in protective packages until they are inserted into the product. • Avoid contact with other people. •...
  • Page 13 DANGER DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 14 ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...
  • Page 15 PERIGO PERIGO PERIGO Chapter 1 Safety information...
  • Page 16 PERIGO PERIGO PERIGO PERIGO PERIGO DANGER DANGER ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...
  • Page 17 DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 18 DANGER VORSICHT VORSICHT VORSICHT VORSICHT ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...
  • Page 19 VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information...
  • Page 20 ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...
  • Page 21 Chapter 1 Safety information...
  • Page 22 ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...
  • Page 23 Chapter 1 Safety information...
  • Page 24 ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...
  • Page 25 Chapter 1 Safety information...
  • Page 26 ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 27: Chapter 2. Important Service Information

    – “FRU identification” on page 20 Important: • Advise customers to contact the Lenovo Customer Support Center if they need any assistance in obtaining or installing any software fixes, drivers, and UEFI BIOS downloads. Telephone numbers for Lenovo Support are available at: https://pcsupport.lenovo.com/supportphonelist...

  • Page 28: How To Use Error Message

    Dynamic Configure To Order (CTO) model This model provides the ability for a customer to configure a Lenovo solution from a Web Site, and have this configuration sent to fulfillment, where it is built and shipped directly to the customer. The machine label and eSupport will load these products as the 4-character MT, 4-character model, and 2-character country code.

  • Page 29: Chapter 3. General Checkout

    Before checking problems with the computer, determine whether the damage is covered under the warranty by referring to the following list: © Copyright Lenovo 2025...

  • Page 30: Checkout Guide

    Note: If you are unable to isolate and repair the problem yourself after running the program, save and print the log files created by the program. You need the log files when you speak to a Lenovo technical support representative.

  • Page 31: Quick Test Programs

    Vantage app installed. To download and install a quick test program, go to , and follow the instructions https://www.lenovo.com/diags on the Web site. To run a test using quick test program, do the following: Step 1.

  • Page 32: Bootable Diagnostic Programs

    If the computer you are servicing is not installed with the UEFI diagnostic program, you can download a bootable diagnostic program from the Lenovo Support Web site. The bootable diagnostic program enables you to view system information and test some hardware devices in your computer, such as memory, storage devices, the LCD, and system board buses.

  • Page 33: Checking The Built-In Battery And Operational Charging

    Checking the built-in battery and operational charging This system supports only batteries specially designed for this specific system and manufactured by Lenovo or an authorized manufacturer. The system does not support unauthorized batteries or batteries designed for other systems.
  • Page 34 Wire Voltage (V dc) +2.5 to +3.2 Black Ground • If the voltage is correct, replace the system board. • If the voltage is not correct, replace the coin-cell battery. • If the coin-cell battery discharges quickly after replacement, replace the system board. ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 35: Chapter 4. Related Service Information

    When the latest maintenance diskette and the system program service diskette become available, they will be posted on: https://support.lenovo.com Reset or restore Windows To reset or restore Windows, refer to the information below： Use Lenovo recovery options Step 1. Go to https://support.lenovo.com/HowToCreateLenovoRecovery Step 2.

  • Page 36: Power-On Password

    The system management password can also protect the system information stored in UEFI BIOS like a supervisor password, but it has lower authority by default. The system management password can be set through the UEFI BIOS menu or through Windows Management Instrumentation (WMI) with the Lenovo client-management interface.

  • Page 37: How To Remove The Power-On Password

    Lenovo cannot reset your passwords or recover data from the storage drive. You can contact a Lenovo authorized service provider to have the storage drive replaced. A fee will be charged for parts and service. If the storage drive is a CRU (Customer Replaceable Unit), you can also contact Lenovo to purchase...

  • Page 38: How To Remove The System Management Password

    a new storage drive to replace the old one by yourself. To check whether the storage drive is a CRU and the relevant replacement procedure, see “Major FRUs and CRUs” on page 50. How to remove the system management password To remove a system management password, do the following: How to remove the system management password if no supervisor password has been set...

  • Page 39: Power Management

    For more details and configurations about AIMT, you can refer to the information provided by AMD https:// www.amd.com/DASH. Power management To reduce power consumption, the computer has two power management modes: sleep and hibernation. Sleep mode When the computer enters sleep mode, the screen goes blank and all internal devices are still powered on with lower power consumption.

  • Page 40: Symptom-To-Fru Index

    Symptom-to-FRU index The symptom-to-FRU index in this section lists symptoms and errors and their possible causes. The most likely cause is listed first, in boldface type. Note: Do the FRU replacement or other actions in the sequence shown in the column headed “FRU or action, in sequence.”...

  • Page 41: Error Messages

    The battery installed is not supported by this system and Replace the battery. will not charge. Please replace the battery with the correct Lenovo battery for this system. Press the Esc key to continue. This system does not support batteries that are not Replace the battery.
  • Page 42 • We recommend that you speak to our Customer Support Center before attempting to service the computer yourself so that you can be directed to the correct documentation and repair information. It might be recommended to have a Lenovo-authorized service provider repair your computer depending on the complexity of the error or fault.

  • Page 43: No-Beep Symptoms

    Blinking patterns Error codes Solutions 0283: PCI resource error 1. Remove PCIe devices (the M.2 card, PCIe card, and so on) (service provider only). 2. If step 1 does not work, replace the system board (service provider only). 0284: TCG-compliant functionality-related Replace the system board (service provider error (might be the BIOS code validation only).

  • Page 44: Lcd-Related Symptoms

    If the LCD you are servicing has two or less visible defective pixels, it should not be considered faulty. However, if the LCD has three or more visible defective pixels, it will be deemed as defective by Lenovo and it should be replaced.

  • Page 45: Intermittent Problems

    Step 1. Ensure that the computer is connected to ac power. Then, press the power button for about seven seconds to turn off the computer. Step 2. Press Fn, left Ctrl, and the power button at the same time. If the computer displays five solid colors in sequence across the entire screen, it indicates that the LCD functions normally.

  • Page 46: Lenovo Memory Self Repair (For Intel Models Only)

    LCD assembly Lenovo Memory Self Repair (for Intel models only) Lenovo Memory Self Repair (hereafter referred to as repair tool) enables you to repair memory single-bit or single-row failure with internal redundant resources. It is recommended that you use the repair tool in the following situations: •...

  • Page 47: Chapter 5. Special Keys

    Open the context menu of the current active app. Open the Calculator (for ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD). Put the computer to sleep (for ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD). © Copyright Lenovo 2025...
  • Page 48 You can customize keyboard settings in Vantage app. To customize detailed settings, open the Vantage app, and then click Device ➙ Input & Accessories. For more keyboard shortcuts, go to https://support.lenovo.com/us/en/solutions/windows-support ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 49: Chapter 6. Locations

    Front view Have a quick glance at the front view of your computer. ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD Description Description Item Item Microphone* Infrared camera* / camera* Webcam privacy shutter* Touch screen* © Copyright Lenovo 2025...
  • Page 50 Description Description Item Item ® Power button with fingerprint reader* TrackPoint pointing stick Speaker NFC (near field communication) mark* Trackpad TrackPoint Three Buttons * for selected models ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...
  • Page 51 ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Description Description Item Item Microphone* Infrared camera* / camera* Webcam privacy shutter Touch screen* ® Power button with fingerprint reader* TrackPoint pointing stick NFC (near field communication) mark* Trackpad TrackPoint Three Buttons * for selected models Chapter 6 Locations...
  • Page 52 Webcam privacy shutter Slide the webcam privacy shutter to cover or uncover the camera lens. It is designed to protect your privacy. ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 53: Side View

    Side view Have a quick glance at connectors on both sides of your computer. Description Description Item Item ® USB-C power connector (Thunderbolt™ 4) Note: For AMD models, when you HDMI™ connector connect a USB 3.2 Gen 2 device to this connector, the supported transfer rate is up to 10Gbps.
  • Page 54 Note: For more information about the USB connector name update, see Appendix A “Notice for USB connector name update” on page 145. * for selected models Statement on USB transfer rate Depending on many factors such as the processing capability of the host and peripheral devices, file attributes, and other factors related to system configuration and operating environments, the actual transfer rate using the various USB connectors on this device will vary and will be slower than the data rate listed in the connector name or below for each corresponding device.

  • Page 55: Bottom View

    Bottom view Have a quick glance at the bottom part of your computer. ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Description Description Item Item Emergency-reset hole Speaker Emergency-reset hole Emergency-reset hole can help you to recover computer when the computer stops responding and you cannot turn it off by pressing the power button.
  • Page 56 2. Insert a straightened paper clip into the hole to cut off power supply temporarily. 3. Connect your computer to ac power and then turn on your computer. Note: If your computer is still no response, you can call Lenovo Customer Support Center to get further help.

  • Page 57: Locating Frus And Crus

    Lenovo will ship the CRU to you. CRU information and replacement instructions are shipped with your product and are available from Lenovo at any time upon request. You can find a list of CRUs for your product in this Hardware Maintenance Manual. An electronic version of this manual can be found at .

  • Page 58: Major Frus And Crus

    Major FRUs and CRUs ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...
  • Page 59 Table 7. Major FRUs and CRUs FRU description Self-service Optional-service LCD unit Note: LCD unit is a single FRU for models with OLED panel. Keyboard Fingerprint reader cable* Power button without fingerprint reader* Power button with fingerprint reader* Power button bracket* Nano-SIM-card tray* Dummy smart card reader* Smart card reader*...
  • Page 60 Notes: • Depending on the computer model, your computer might look different from the illustration above. • The Lenovo factory recovery USB key is used to restore the Microsoft Windows operating system. It might not come with the computer, and a user might order it from https://pcsupport.lenovo.com/...
  • Page 61 ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Chapter 6 Locations...
  • Page 62 Table 8. Major FRUs and CRUs FRU description Self-service Optional-service LCD unit Note: LCD unit is a single FRU for models with OLED panel. Keyboard Fingerprint reader cable* Power button without fingerprint reader* Power button with fingerprint reader* Power button bracket* Nano-SIM-card tray* Dummy smart card reader* Smart card reader*...
  • Page 63 Notes: • Depending on the computer model, your computer might look different from the illustration above. • The Lenovo factory recovery USB key is used to restore the Microsoft Windows operating system. It might not come with the computer, and a user might order it from https://pcsupport.lenovo.com/...

  • Page 64: Lcd Frus And Crus

    LCD FRUs and CRUs ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD (Black models) ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...
  • Page 65 ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD (Sliver models) Table 9. LCD FRUs and CRUs FRU description Self-service Optional-service LCD bezel sheet and elastic adhesive tapes LCD bezel Camera with microphone* Microphone board (for non-camera models) Camera/LED cable LCD cover assembly Wireless LAN antenna assembly LCD hinges...
  • Page 66 * for selected models Note: Depending on the computer model, your computer might look different from the illustration above. ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Table 10. LCD FRUs and CRUs FRU description Self-service Optional-service LCD bezel sheet and elastic adhesive tapes LCD bezel Camera with microphone* Microphone board (for non-camera models)
  • Page 67 Table 10. LCD FRUs and CRUs (continued) FRU description Self-service Optional-service LCD cable LCD panel * for selected models Note: Depending on the computer model, your computer might look different from the illustration above. Chapter 6 Locations...

  • Page 68: Miscellaneous Parts

    • Spec Connector and cable guide This topic provides information to help Lenovo authorized service technicians identify connectors and cables for replacement purpose. To view each FRU and the exploded illustration of the computer, see “Major FRUs and CRUs” on page 50 and “LCD FRUs and CRUs” on page 56.
  • Page 69 System board connectors and cables Table 12. System board connector and cable guide Internal cable required Connector/feature Cable connection I/O (LAN and USB) board I/O board cable Connect one end of the cable to connector (internal) the I/O board and the other end to this connector.
  • Page 70 Table 12. System board connector and cable guide (continued) Connector/feature Internal cable required Cable connection HDMl connector (external) Connect a compatible digital audio device or video monitor to this connector. Always On USB-A 3.2 Gen 1 Connect a USB-A compatible connector (external) device to this connector.
  • Page 71 Table 13. USB I/O board connector and cable guide Internal cable required Connector/feature Cable connection USB I/O board connector (internal) USB I/O board cable Connect one end to the system board and the other end to this connector. USB-A connector (USB 5Gbps) Insert USB-A compatible devices (external) into the USB connector.

  • Page 72: Looking Up Fru Information

    Looking up FRU information For detailed FRU information, including part numbers, descriptions, and substitution part numbers, go to: https://support.lenovo.com/partslookup ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance...

  • Page 73: Chapter 7. Fru Replacement Notices

    • Keep the screw kit in your tool bag. For the part number of the screw kit, go to: https://support.lenovo.com/partslookup Tighten screws as follows: • Plastic to plastic Turn an additional angle of 90 degrees after the screw head touches the surface of the plastic part. © Copyright Lenovo 2025...

  • Page 74: Retaining Serial Numbers

    Maintenance Key. Note: Only an authorized Lenovo service technician can access the above Web site. Step 3. Restart the computer. ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance...

  • Page 75: Retaining The Uuid

    Go to and follow the instructions on the screen to https://www.lenovo.com/maintenanceutilities create a Maintenance Key. Note: Only an authorized Lenovo service technician can access the above Web site. Step 3. Restart the computer. Step 4. When the logo screen is displayed, press Esc. The ThinkPad Config Information Update Utility interface is displayed.

  • Page 76: Reading Or Writing The Eca Information

    To check what ECAs have been previously applied to the machine, use the ECA Information Read/Write function on the LENOVO ThinkPad Hardware Maintenance Diskette or Maintenance Key. Step 1. Insert the latest version of LENOVO ThinkPad Hardware Maintenance Diskette or Maintenance Key, and then restart the computer. Step 2.

  • Page 77: Chapter 8. Removing Or Replacing A Fru

    Click Power Options, and then click Choose what the power buttons do on the left pane. Step 3. Click Change settings that are currently unavailable at the top. Step 4. If prompted by User Account Control (UAC), click Yes. © Copyright Lenovo 2025...

  • Page 78: Removing The Nano-Sim Card And Nano-Sim-Card Tray

    Step 5. Clear the Turn on fast startup check box, and then click Save changes. To disable the built-in battery Step 1. Restart your computer. When the logo screen is displayed, immediately press F1 to enter the UEFI BIOS menu. Select Config ➙...
  • Page 79 Note: You might be instructed to slide the keyboard frame forward or backward in some of the following steps. In this case, ensure that you do not press or hold the keys while sliding the keyboard frame. Otherwise, the keyboard frame cannot be moved. Tools needed: Phillips head screwdriver Step 1.
  • Page 80 Step 3. Pivot the keyboard slightly upward and then turn over the keyboard Step 4. Put the keyboard on the palm rest as shown and detach the connectors. Then, remove the keyboard. ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 81: Install The Keyboard

    Install the keyboard Follow the instructions to install the keyboard. Note: You might be instructed to slide the keyboard frame forward or backward in some of the following steps. In this case, ensure that you do not press or hold the keys while sliding the keyboard frame. Otherwise, the keyboard frame cannot be moved.
  • Page 82 Step 4. Tighten the screws to secure the keyboard. ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 83: Base Cover Assembly

    Step 5. Connect the ac power adapter and all disconnected cables to the computer. Note: Configure the keyboard language in UEFI BIOS. Base cover assembly Follow the instructions to replace the base cover assembly. Before you start, read Generic Safety and Compliance Notices Note: Do not remove the base cover assembly when your computer is connected to ac power.
  • Page 84 ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...
  • Page 85 Step 2. Install the base cover assembly as shown below. ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD Chapter 8 Removing or replacing a FRU...
  • Page 86 Reinstall the screws in alphabetic order (a to g). ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 87: Memory Module Shielding Cap (For Selected Models)

    Reinstall the screws in alphabetic order (a to g). If the computer does not start up after you reinstall the base cover assembly, disconnect the ac power adapter and then reconnect it to the computer. Memory module shielding cap (for selected models) Follow the instructions to replace the memory module shielding cap.
  • Page 88 3. Close the computer display and turn over the computer. 4. Remove the base cover assembly. See “Base cover assembly” on page 75. Step 1. Remove the memory module shielding cap as shown below. ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Step 2.

  • Page 89: Memory Module (For Selected Models)

    ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Memory module (for selected models) Follow the instructions to replace the memory module. Before you start, read Generic Safety and Compliance Notices Attention: Do not touch the contact edge of the memory module. Otherwise, the memory module might get damaged.
  • Page 90 Memory modules Installation order Slot 1 Slot 1 and slot 2 Step 1. Remove the memory module as shown below. ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Step 2.

  • Page 91: Wireless Wan Module And Wireless Wan Module Bracket (For Selected 4G Models)

    • Wireless WAN ready model identifies that product has preinstalled wireless WAN antennas and allows a user-installable wireless WAN module. • Only wireless WAN model or wireless WAN ready model is allowed to install the optional Lenovo wireless WAN module.
  • Page 92 Attention: Do not touch the contact edge of the wireless WAN module. Otherwise, the wireless WAN module might get damaged. For access, do the following: 1. Disable Fast Startup and the built-in battery. See “Disabling the built-in battery” on page 69. 2.

  • Page 93: Wireless Wan Module And Wireless Wan Module Bracket (For Selected 5G Models)

    • Wireless WAN ready model identifies that product has preinstalled wireless WAN antennas and allows a user-installable wireless WAN module. • Only wireless WAN model or wireless WAN ready model is allowed to install the optional Lenovo wireless WAN module.
  • Page 94 3. Close the computer display and turn over the computer. 4. Remove the base cover assembly. See “Base cover assembly” on page 75. Tools needed: Phillips head screwdriver Step 1. Remove the wireless WAN module and its bracket as shown below. ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD Figure 3.

  • Page 95: M.2 Solid-State Drive And M.2 Solid-State Drive Bracket

    Figure 4. 5G models Step 2. Install the wireless WAN module and its bracket in reverse order. Ensure that the antenna cables are installed appropriately: • The blue cable is connected to the connector labeled Blue on the module. • The black and grey cable is connected to the connector labeled Black Grey on the module. •...
  • Page 96 1. Disable Fast Startup and the built-in battery. See “Disabling the built-in battery” on page 69. 2. Turn off the computer and disconnect the computer from ac power and all connected cables. 3. Close the computer display and turn over the computer. 4.

  • Page 97: Built-In Battery

    Type 2: ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Step 2. Install the M.2 solid-state drive and its bracket in reverse order. Note: Ensure the adhesive side of the thermal pad is attached on the system board if a singled- side adhesive thermal pad is in use with the M.2 solid-state drive.
  • Page 98 Batteries supplied by Lenovo for use with your product have been tested for compatibility and should only be replaced with approved parts. A battery other than the one specified by Lenovo, or a disassembled or modified battery may not be covered by warranty.

  • Page 99: Speaker Assembly

    Step 1. Remove the built-in battery as shown below. ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Step 2. Install the built-in battery in reverse order. CAUTION: Remove any foreign objects before reassembly. Ensure that the base cover assembly is secured in place.
  • Page 100 Step 1. Remove the speaker assembly as shown below. ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD Step Screw (quantity) Color Torque M2.0 x 2.5 mm, flat-head, nylon-coated (4) Black 0.18 Nm (1.85 kgf-cm) ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 101: Coin-Cell Battery

    Before you start, read Generic Safety and Compliance Notices DANGER Use only the Lenovo authorized battery specified for the computer. Any other battery could ignite or explode. For access, remove these FRUs in order: • “Base cover assembly” on page 75 •...

  • Page 102: Dummy Smart Card Reader

    ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Step 2. Install the coin-cell battery in reverse order. Note: • Ensure that the connector is attached firmly. • Reset the system date and time in the BIOS menu. Dummy smart card reader Follow the instructions to replace the dummy smart card reader.

  • Page 103: Smart Card Reader And Cable

    ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Step 2. Install the dummy smart card reader in reverse order. Smart card reader and cable Follow the instructions to replace the smart card reader. Before you start, read Generic Safety and Compliance Notices For access, remove these FRUs in order: 1.
  • Page 104 Step Screw (quantity) Color Torque Black 0.1 Nm M1.6 × 2.1 mm, flat-head, nylon-coated (2) (1.1 kgf-cm) ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 105: Trackpad And Trackpad Cable

    Step Screw (quantity) Color Torque Black 0.1 Nm M1.6 × 2.1 mm, flat-head, nylon-coated (2) (1.1 kgf-cm) Step 2. Install the smart card reader and cable in reverse order. Note: Ensure that the connectors are attached firmly. Trackpad and Trackpad cable Follow the instructions to replace the Trackpad and Trackpad cable Before you start, read Generic Safety and Compliance Notices...
  • Page 106 Step 1. Remove the Trackpad cable. ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Step 2. Remove the waterproof mylar, if any. ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...
  • Page 107 Step 3. Remove the screws. ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD Step Screw (quantity) Color Torque M1.6 × 2.1 mm, flat-head, nylon-coated (7) Black 0.1 Nm (1.1 kgf-cm) ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Chapter 8 Removing or replacing a FRU...

  • Page 108: Installation Steps

    Step Screw (quantity) Color Torque M1.6 × 2.1 mm, flat-head, nylon-coated (7) Black 0.1 Nm (1.1 kgf-cm) Step 4. Remove the Trackpad. ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Installation steps Follow the instructions to install the Trackpad and Trackpad cable.
  • Page 109 ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Step 2. Install the Trackpad with jig. ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Step 3. Install the screws to fix the Trackpad. ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD Chapter 8 Removing or replacing a FRU...
  • Page 110 Step Screw (quantity) Color Torque M1.6 × 2.1 mm, flat-head, nylon-coated (7) Black 0.1 Nm (1.1 kgf-cm) ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Step Screw (quantity) Color Torque M1.6 × 2.1 mm, flat-head, nylon-coated (7) Black 0.1 Nm (1.1 kgf-cm) Step 4.
  • Page 111 Step 5. Install the Trackpad cable. Note: Ensure that the connector is attached firmly. ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Chapter 8 Removing or replacing a FRU...
  • Page 112 Step 6. Remove the jig. ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 113: Nfc Card And Cables

    NFC card and cables Follow the instructions to replace the NFC card and cables. Before you start, read Generic Safety and Compliance Notices For access, remove these FRUs in order: 1. “Base cover assembly” on page 75 2. “Built-in battery” on page 89 Step 1.

  • Page 114: I/O Bracket

    Step 2. Install the NFC card and cable in reverse order. I/O bracket Before you start, read Generic Safety and Compliance Notices For access, remove this FRU: 1. “Base cover assembly” on page 75 Step 1. Remove the I/O bracket as shown below. ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 115: Thermal Fan Assembly

    Torque Step Screw (quantity) Color M2.0 × 3.5 mm, flat-head, nylon-coated (3) Black 0.18 Nm (1.85 kgf-cm) ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Step Screw (quantity) Color Torque Black 0.18 Nm M2.0 × 3.5 mm, flat-head, nylon-coated (3) (1.85 kgf-cm) Step 2.
  • Page 116 ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...
  • Page 117 Step 2. Install the heat sink in reverse order. Note: • Reinstall the screws in alphabetic order (a to e). • Ensure that the connector is attached firmly. • Do not press the top of the fan cover and the fan hub. •...

  • Page 118: Usb Board Cable, Usb Board, And Rj45 Door Bracket

    USB board cable, USB board, and RJ45 door bracket Before you start, read Generic Safety and Compliance Notices For access, remove these FRUs: • “Base cover assembly” on page 75 Step 1. Remove the RJ45 door bracket, USB board cable, and USB board as shown below. ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD Step Screw (quantity)
  • Page 119 Step Screw (quantity) Color Torque M2.0 × 3.0mm, flat-head, nylon-coated (1) Silver 0.18 Nm (1.85 kgf-cm) ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Chapter 8 Removing or replacing a FRU...
  • Page 120 Step Screw (quantity) Color Torque M2.0 × 7.4mm, flat-head, nylon-coated (2) Black 0.18 Nm (1.85 kgf-cm) M2.0 × 3.5mm, flat-head, nylon-coated (1) Black 0.18 Nm (1.85 kgf-cm) ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 121: Power Button With Or Without Fingerprint Reader

    Step Screw (quantity) Color Torque M2.0 × 3.5 mm, flat-head, nylon-coated (1) Black 0.18 Nm (1.85 kgf-cm) Step 2. Install the USB board cable, USB board, and USB board bracket in reverse order. Power button with or without fingerprint reader Follow the instructions to replace the power board and power button with or without fingerprint reader.
  • Page 122 Step Screw (quantity) Color Torque M2.0 × 2.3 mm, flat-head, nylon-coated (2) Black 0.18 Nm (1.85 kgf-cm) ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Step Screw (quantity) Color Torque M2.0 × 2.5mm, flat-head, nylon-coated (2) Black 0.18 Nm (1.85 kgf-cm) Step 2.

  • Page 123: Power Button Bracket

    Power button bracket Follow the instructions to replace the power button bracket. Before you start, read Generic Safety and Compliance Notices For access, remove these FRUs in order: 1. “Base cover assembly” on page 75 2. “USB board cable, USB board, and RJ45 door bracket” on page 110 3.
  • Page 124 Step Screw (quantity) Color Torque M2.0 × 3.0 mm, flat-head, nylon-coated (2) Silver 0.18 Nm (1.85 kgf-cm) ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 125: System Board

    Step 2. Install the wireless WAN antennas in reverse order. When installing, ensure that the connector is attached firmly. Attention: When you route the cables, ensure that they are not subject to any tension. Tension could cause the cables to be damaged by the cable guides, or a wire to be broken. System board Follow the instructions to replace the system board.

  • Page 126: Replace The System Board

    • Avoid rough handling of any kind. • At every point in the process, be sure not to drop or stack the system board. • If you put a system board down, be sure to put it only on a padded surface such as an ESD mat or a corrugated conductive surface.
  • Page 127 Step 1. Remove the system board as shown below. ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD Step Screw (quantity) Color Torque 0.18 Nm M2.0 × 3.0mm, flat-head, nylon-coated (3) Silver (1.85 kgf-cm) ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Chapter 8 Removing or replacing a FRU...

  • Page 128: How To Configure Keyboard Language In Uefi Bios

    Step Screw (quantity) Color Torque M2.0 × 3.5mm, flat-head, nylon-coated (3) Black 0.18 Nm (1.85 kgf-cm) Step 2. Install the system board in reverse order. Notes: • Ensure that the cable is attached firmly. • Apply thermal grease if needed. For details, see “Base cover assembly” on page 75. How to configure keyboard language in UEFI BIOS Follow the instructions to configure keyboard language in UEFI BIOS.

  • Page 129: How To Input The Product Information With Thinkpad System Board Self Repair Tool

    The process of writing product information can only be used once and if unsure, consider getting support from a Lenovo-authorized service technician. Step 1.
  • Page 130 Step Screw (quantity) Color Torque Black 0.29 Nm M2.5 × 4.5mm, flat-head, nylon-coated (6) (3.0 kgf-cm) ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...
  • Page 131 Torque Step Screw (quantity) Color M2.5 × 6.0mm, flat-head, nylon-coated (6) Black 0.29 Nm (3.0 kgf-cm) Chapter 8 Removing or replacing a FRU...

  • Page 132: Keyboard Assembly

    Step 2. Install the LCD unit in reverse order. When installing, ensure that the connectors are attached firmly. Attention: When you route the cables, ensure that they are not subject to any tension. Tension could cause the cables to be damaged by the cable guides, or a wire to be broken. Note: For ThinkPad P14s Gen 5 AMD, OLED LCD unit comes with the factory color calibration feature, do the following to install new color profiles: 1.

  • Page 133: Lcd Bezel Sheet And Lcd Bezel

    • “I/O bracket” on page 106 • “Thermal fan assembly” on page 107 • “USB board cable, USB board, and RJ45 door bracket” on page 110 • “Power button with or without fingerprint reader” on page 113 • “Wireless WAN antennas (for selected models)” on page 115 •...

  • Page 134: Lcd Hinges

    Step 2. Install the LCD bezel sheet and LCD bezel in reverse order. When installing, ensure that all the latches are attached firmly. Note: After the LCD bezel sheet is removed , it can be reused. LCD hinges Follow the instructions to replace the LCD hinges. Before you start, read Generic Safety and Compliance Notices For access, remove these FRUs:...
  • Page 135 Table 17. Screw specification Step Screw (quantity) Color Torque M2.5 × 3.5 mm, flat-head, nylon-coated (6) Black 0.29 Nm (3.0 kgf-cm) ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD Chapter 8 Removing or replacing a FRU...

  • Page 136: Lcd Panel And Elastic Adhesive Tapes

    Table 18. Screw specification Step Screw (quantity) Color Torque Black 0.29 Nm M2.5 × 3.5 mm, flat-head, nylon-coated (6) (3.0 kgf-cm) Step 2. Install the LCD hinges in reverse order. LCD panel and elastic adhesive tapes Follow the instructions to replace the LCD panel and elastic adhesive tapes For access, remove these FRUs in order: •...

  • Page 137: Removal Steps

    • “LCD hinges” on page 126 Removal steps Follow the instructions to remove the LCD panel and elastic adhesive tapes. Step 1. Pull out each tape slowly in the direction as shown until the adhesive tapes are all released from LCD unit.
  • Page 138 Step 2. Turn over the LCD panel and detach the LCD cable from the LCD panel as shown. ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 139: Installation Steps

    Installation steps Follow the instructions to install the LCD panel and elastic adhesive tapes. Step 1. Peel off the release liners from one side of the new elastic adhesive tapes. Apply the tapes to the correct locations. Peel off the release liners from the other side of the tapes. Ensure that the tapes are applied correctly as shown.
  • Page 140 Step 2. Attach the LCD cable to the LCD panel as shown. Turn over the LCD panel to secure the LCD panel with tapes. ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 141: How To Install New Color Profiles For Lcd Panel With The Factory Color Calibration Feature

    On Linux operating system based computers: 1. If color calibration profiles need to be reinstalled on a system, go to https://support.lenovo.com/us/en/ to know the details. solutions/HT517038 2. If a panel is replaced and color calibration profiles need updating for the new panel, go to https:// support.lenovo.com/us/en/solutions/HT517060...

  • Page 142: Camera-And-Microphone Module And Cable

    • “LCD hinges” on page 126 • “LCD panel and elastic adhesive tapes” on page 128 Step 1. Remove the LCD cable as shown below. ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Step 2.
  • Page 143 • “LCD hinges” on page 126 • “LCD panel and elastic adhesive tapes” on page 128 Step 1. Remove the camera-and-microphone module as shown below. ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD (Black models) ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD (Silver models) ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Chapter 8 Removing or replacing a FRU...
  • Page 144 Step 2. Remove the camera-and-microphone-module cable as shown below. ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD (Black models) ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD (Silver models) ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 145: Wireless Lan Antenna Assembly

    ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Step 3. Install the camera-and-microphone module and cable in reverse order. Wireless LAN antenna assembly Follow the instructions to replace the wireless LAN antenna assembly. Before you start, read Generic Safety and Compliance Notices For access, remove these FRUs in order: •...
  • Page 146 ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD (Silver models) ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 147: Antenna Locations

    Step 2. Install the wireless LAN antenna assembly in reverse order. Attention: When you route the cables, ensure that they are not subject to any tension. Tension could cause the cables to be damaged by the cable guides, or a wire to be broken. Antenna locations The following illustration shows the antenna locations.
  • Page 148 ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD (Black models) ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...
  • Page 149 ThinkPad T14 Gen 6 and ThinkPad P14s Gen 6 AMD (Silver models) Wireless LAN main antenna (gray) Wireless LAN auxiliary antenna (black) Wireless WAN MIMO 2 antenna* (black and gray) Wireless WAN auxiliary antenna* (blue) Wireless WAN MIMO 1 antenna* (white and gray) Wireless WAN main antenna* (orange) * for selected models Chapter 8...

  • Page 150: Lcd Cover Assembly

    ThinkPad T16 Gen 4 and ThinkPad P16s Gen 4 AMD Wireless LAN main antenna (gray) Wireless LAN auxiliary antenna (black) Wireless WAN auxiliary antenna* (blue) Wireless WAN MIMO 2 antenna* (black and gray) Wireless WAN main antenna* (orange) Wireless WAN MIMO 1 antenna* (white and gray) * for selected models LCD cover assembly For access, remove these FRUs in order:...
  • Page 151 • “Base cover assembly” on page 75 • “I/O bracket” on page 106 • “LCD unit” on page 121 • “LCD bezel sheet and LCD bezel” on page 125 • “LCD hinges” on page 126 • “LCD panel and elastic adhesive tapes” on page 128 •...
  • Page 152 ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 153: Appendix A. Notice For Usb Connector Name Update

    Appendix A. Notice for USB connector name update The USB Implementers Forum published a revision of the guideline for USB connector names in September, 2022. Lenovo follows the revised guideline and updates USB connector names accordingly. You can refer to the table below for naming update details.
  • Page 154 ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

  • Page 155: Appendix B. Notices

    Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any Lenovo intellectual property right may be used instead.
  • Page 156 Trademarks Lenovo, Lenovo logo, ThinkPad, ThinkPad logo, TrackPoint, and UltraConnect are trademarks of Lenovo. Intel and Thunderbolt are trademarks of Intel Corporation or its subsidiaries in the U.S. and/or other countries. Microsoft, Microsoft Teams, Windows, BitLocker, , and Cortana are trademarks of the Microsoft group of companies.

  • Page 157: Appendix C. Abbreviation Table

    Electrically Erasable Programmable Read-Only Memory Extensible Firmware Interface Electrostatic discharge Field Replaceable Unit General Announce Variant Integrated circuits Liquid Crystal Display Machine type and model POST Power-on self-test RFID Radio-frequency identification Supervisor password UUID Universally unique identifier © Copyright Lenovo 2025...
  • Page 158 ThinkPad T14 Gen 6 / ThinkPad P14s Gen 6 AMD / ThinkPad T16 Gen 4 / ThinkPad P16s Gen 4 AMD Hardware Maintenance Manual...

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