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Lenovo ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual

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ThinkPad X1 Carbon Gen 12
Hardware Maintenance Manual

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  • Page 1 ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...
  • Page 2 First Edition (December 2023) © Copyright Lenovo 2023. 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 3: Table Of Contents

    Sleep mode ....cable ....© Copyright Lenovo 2023...
  • Page 4 Appendix B. Abbreviation table ..77 1120 USB bracket ....1130 Trackpad and its spill mylar ..ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 5: About This Manual

    About this manual This manual contains service and reference information for the following products: Product name Machine type (MT) ThinkPad X1 Carbon Gen 12 21KC and 21KD Use this manual along with the advanced diagnostic tests to troubleshoot problems. Important: •...
  • Page 6 ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 7: 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 2023...
  • Page 8 This practice ensures correct grounding of the units. • If an electrical accident occurs: – Use caution; do not become a victim yourself. – Switch off power. – Send another person to get medical aid. ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 9: 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 10: Grounding Requirements

    The safety notices in this section are provided in the following languages: • English • Arabic • Brazilian Portuguese • French • German • Hebrew • Japanese • Korean • Spanish • Traditional Chinese DANGER DANGER ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...
  • Page 11 DANGER DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 12 ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...
  • Page 13 PERIGO PERIGO PERIGO Chapter 1 Safety information...
  • Page 14 PERIGO PERIGO PERIGO PERIGO PERIGO DANGER DANGER ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...
  • Page 15 DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 16 DANGER VORSICHT VORSICHT VORSICHT VORSICHT ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...
  • Page 17 VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information...
  • Page 18 ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...
  • Page 19 Chapter 1 Safety information...
  • Page 20 ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...
  • Page 21 Chapter 1 Safety information...
  • Page 22 ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...
  • Page 23 Chapter 1 Safety information...
  • Page 24 ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 25: 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 26: 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 27: 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 2023...

  • Page 28: 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 29: Quick Test Programs

    Run quick test programs to troubleshoot and resolve computer problems, especially when the computer does not have the Vantage app installed. To download and install a quick test program, go to https://www.lenovo.com/diags , and follow the instructions on the Web site.

  • Page 30: 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 31: Checking The Ac Power Adapter

    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 32 • 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 X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 33: 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. 1. Go to https://support.lenovo.com/HowToCreateLenovoRecovery 2. Follow the on-screen instructions. • Use Window recovery options.

  • Page 34: Supervisor 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 35: 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 a new storage drive to replace the old one by yourself.

  • Page 36: Power Management

    Hibernation mode In hibernation mode, the following occurs: • The system status, RAM, VRAM, and setup data are stored on the solid-state drive. ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 37: Symptom-To-Fru Index

    • The system is powered off. Note: If the computer enters the hibernation mode while it is connected to the dock, do not disconnect it before resuming normal operation. If you do disconnect it and then try to resume normal operation, you will get an error message, and you will have to restart the system.

  • Page 38: Numeric Error Codes

    2. Replace the M.2 solid-state drive. HDD (HDD0) 3. Replace the system board. 2200 Have the computer serviced. Machine Type and Serial Number are invalid. 2201 Replace the system board. Machine UUID is invalid ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 39: 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 40 • Do not attempt to service a computer yourself unless instructed to do so by the Customer Support Center or product documentation. Only use a Lenovo-authorized service provider to repair your computer. Refer to the blinking patterns and error codes in the table below to solve your computer problems.

  • Page 41: Beep Symptoms

    Blinking patterns Error codes Solutions 0288: Computer display error 1. Reconnect the display cable on both the system board side and the computer display side (service provider only) and check the LCD panel. 2. If step 1 does not work, connect an external display to your computer and check the status (customer or service provider).

  • Page 42: 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 43: Intermittent Problems

    Table 4. LCD-related symptoms FRU or action, in sequence Symptom or error No beep, power-on indicator on, and a blank LCD during 1. Run LCD Self Test. POST. 2. Replace the system board. • LCD backlight not working. 1. Reseat the LCD connectors. •...
  • Page 44 ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 45: Chapter 5. Special Keys

    Open Magnifier. Fn + 4 Enter sleep mode. Fn + B Break operation. Fn + K Scroll contents. Fn + P Pause operation. Fn + S Send system request. Fn + N Open system information Window. © Copyright Lenovo 2023...
  • Page 46 ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 47: Chapter 6. Locations

    Chapter 6. Locations Locating computer controls and connectors Front Description Description Item Item Microphone Infrared camera / Camera Webcam privacy shutter Touch screen ® TrackPoint pointing stick Fingerprint reader © Copyright Lenovo 2023...

  • Page 48: Side View

    Item Item USB-A connector (USB 5Gbps, Always ® USB-C connector (Thunderbolt™ 4) On USB) Nano-SIM-card tray Power button USB-A connector (USB 5Gbps) Audio connector Security-lock slot HDMI™ connector * for selected models ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 49: Bottom

    Bottom Emergency-reset hole If the computer stops responding and you cannot turn it off by pressing the power button, reset your computer: 1. Disconnect your computer from ac power. 2. Insert a straightened paper clip into the hole to cut off power supply temporarily. 3.

  • Page 50: 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 https://support.lenovo.com...

  • Page 51: Major Frus And Crus

    Major FRUs and CRUs Chapter 6 Locations...
  • Page 52 Microsoft Windows operating system. It might not come with the computer, and a user might order it from https://pcsupport.lenovo.com/ , though additional shipping and handling fees might apply. lenovorecovery ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 53: 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 45.
  • Page 54 Connect a USB-A compatible (external) devices. HDMI connector (external) Connect a compatible digital audio device or video monitor to this connector. Nano-SIM-card slot (external) Insert a Nano Subscriber Identity Module (SIM) card into this slot. ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 55: Looking Up Fru Information

    P sensor connector Connect the WWAN antenna assembly to these two ends. Trackpad connector Connect this end to the trackpad. Looking up FRU information For detailed FRU information, including part numbers, descriptions, and substitution part numbers, go to: https://support.lenovo.com/partslookup Chapter 6 Locations...
  • Page 56 ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 57: 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 2023...

  • Page 58: Retaining Serial Numbers

    Maintenance Key. Note: Only an authorized Lenovo service technician can access the above Web site. 3. Restart the computer. 4. When the logo is displayed, press Esc. The ThinkPad Config Information Update Utility interface is displayed.

  • Page 59: Retaining The Uuid

    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. 1. Insert the latest version of LENOVO ThinkPad Hardware Maintenance Diskette or Maintenance Key, and then restart the computer.
  • Page 60 Note: Only the ECA number is stored in the EEPROM. The machine type of the ECA is assumed to be the same as the machine type of the machine that had the ECA applied to it. 1. Insert the latest version of LENOVO ThinkPad Hardware Maintenance Diskette or Maintenance Key, and then restart the computer.

  • Page 61: Chapter 8. Removing Or Replacing A Fru

    2. Click Power Options, and then click Choose what the power buttons do on the left pane. 3. Click Change settings that are currently unavailable at the top. 4. If prompted by User Account Control (UAC), click Yes. © Copyright Lenovo 2023...

  • Page 62: Removing The Nano-Sim-Card And Nano-Sim-Card Tray

    Removing the nano-SIM-card and nano-SIM-card tray Note: If the computer you are servicing has a nano-SIM card installed, remove the card with the tray together. 1010 Base cover assembly Removal steps of the base cover assembly ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 63: 1020 Built-In Battery

    • Depending on the country or region of delivery, the labels might be slightly different from the ones in the following illustration. • Due to Lenovo eSupport label being not enabled on early shipped models, some models might have no Lenovo eSupport label.

  • Page 64: 1030 M.2 Solid-State Drive And Bracket

    • Do not make the M.2 solid-state drive subject to physical shocks or vibration. Put the M.2 solid-state drive on a soft material, such as cloth, to absorb physical shocks. • Remove or insert the M.2 solid-state drive horizontally. Otherwise the slot might get damaged. ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 65: 1040 Wireless Wan Card (For Selected Models)

    Removal steps of the M.2 solid-state drive and its bracket Step Screw (quantity) Color Torque M2 × L2 mm, flat-head, nylon-coated (2) Black 0.181 Nm (1.85 kgf-cm) 1040 Wireless WAN card (for selected models) For access, remove this FRU: • “1010 Base cover assembly” on page 56 Removal steps of the wireless WAN card Note: A Mylar film might cover the wireless WAN card.
  • Page 66 0.181 Nm (1.85 kgf-cm) When installing: A reusable 0.5 mm thickness thermal pad for WWAN card is pasted on system board. Ensure that you keep it when installing a new WWAN card. ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...
  • Page 67 Antenna cable routing Ensure that the antenna cables are installed appropriately when installing a wireless WWAN card. Notes: • Keep the tape attached away from the speaker. • Ensure that the orange cable does not touch the speaker. • Ensure that the blue cable does not touch the thermal fan. •...

  • Page 68: 1050 Thermal Fan Assembly

    1050 Thermal fan assembly For access, remove this FRU: • “1010 Base cover assembly” on page 56 • “1020 Built-in battery” on page 57 Removal steps of the thermal fan assembly ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 69: 1060 Speaker Assembly

    When installing: • Ensure that the connector is attached firmly. • Do not press the top of the fan cover and the fan hub. • Before you attach the fan assembly to the computer, clean all thermal grease that has been used and then apply new thermal grease.

  • Page 70: 1070 Trackpad, Fingerprint Reader, And P Sensor Cable

    Removal steps of the trackpad, fingerprint reader, and P sensor cable 1080 Wireless WAN antenna assembly (for selected models) For access, remove these FRUs: • “1010 Base cover assembly” on page 56 • “1020 Built-in battery” on page 57 ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 71: 1090 Wireless Wan Antenna Cable Guide Rubber (For Selected Models)

    Removal steps of the wireless WAN antenna assembly Torque Step Screw (quantity) Color M1.6 × L2.6 mm, flat-head, nylon-coated (4) Black 0.098 Nm (1.0 kgf-cm) When installing: Ensure that the connector is attached firmly. 1090 Wireless WAN antenna cable guide rubber (for selected models) For access, remove these FRUs: •...

  • Page 72: 1100 Coin-Cell Battery

    Removal steps of the wireless WAN antenna cable guide rubber 1100 Coin-cell battery 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: • “1010 Base cover assembly” on page 56 •...

  • Page 73: 1110 Fan Cable Guide

    1110 Fan cable guide For access, remove these FRUs in order: • “1010 Base cover assembly” on page 56 • “1020 Built-in battery” on page 57 Removal steps of the fan cable guide Step Screw (quantity) Color Torque M1.6 × L2.6 mm, flat-head, nylon-coated (4) Silver 0.098 Nm (1.0 kgf-cm)

  • Page 74: 1130 Trackpad And Its Spill Mylar

    1130 Trackpad and its spill mylar For access, remove these FRUs in order: • “1010 Base cover assembly” on page 56 • “1020 Built-in battery” on page 57 Removal steps of the trackpad and its spill mylar ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...
  • Page 75 Step Screw (quantity) Color Torque 0.181 Nm M2 × L2.0 mm Fine pitch, flat-head, nylon-coated (7) Silver (1.85 kgf-cm) Notes: • A mylar might cover the trackpad, and ensure that you attach the mylar to the trackpad after replacement. • Ensure that the connector is attached firmly. Installation steps of trackpad 1.

  • Page 76: 1140 System Board With Ssd Thermal Pad

    As an alternative, you also can use the Golden Key U1 tool HT506954 for that purpose. Refer to https://support.lenovo.com/us/en/solutions/ht102004 for instructions. Important notices for handling the system board: ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...
  • Page 77 Note: Input the exact brand name as shown in this table. Product name Machine type (MT) ThinkPad X1 Carbon Gen 12 21KC and 21KD Chapter 8 Removing or replacing a FRU...
  • Page 78 Removal steps of the system board ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 79: 1150 Lcd Unit

    3. Click Config ➙ Keyboard/Mouse ➙ Keyboard Layout, and then select the keyboard language. 1150 LCD unit For access, remove this FRU: • “1010 Base cover assembly” on page 56 Removal steps of the LCD unit Table 9. Screw specification of ThinkPad X1 Carbon Gen 12 Step Screw (quantity) Color Torque M2.5 ×...

  • Page 80: 1170 Keyboard Assembly

    • “1120 USB bracket” on page 67 • “1130 Trackpad and its spill mylar” on page 68 • “1140 System board with SSD thermal pad” on page 70 • “1150 LCD unit” on page 73 ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...

  • Page 81: Appendix A. 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 82 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 83: Appendix B. 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 2023...
  • Page 84 ThinkPad X1 Carbon Gen 12 Hardware Maintenance Manual...
  • Page 86 Part Number: XXXX Printed in China (1P) P/N: XXXX *1PXXXX*...

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