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Lenovo 20JD Hardware Maintenance Manual
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Lenovo 20JD Hardware Maintenance Manual

Lenovo 20JD Hardware Maintenance Manual

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Hardware Maintenance Manual
Machine Types: 20JD, 20JE, 20JF, and 20JG

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  • Page 1 Hardware Maintenance Manual Machine Types: 20JD, 20JE, 20JF, and 20JG...
  • Page 2 Appendix A “Notices” on page 95. Fourth Edition (October 2019) © Copyright Lenovo 2019. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant a General Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-35F-05925.

  • Page 3: Table Of Contents

    ....Lenovo Companion ... LCD FRUs ....
  • Page 4 Disabling the built-in battery ..1110 Trackpad cable, trackpad support bracket, and trackpad assembly ..Removing the micro SIM card ..1120 NFC module, NFC cable, and NFC Removing ThinkPad Pen Pro .

  • Page 5: About This Manual

    This manual contains service and reference information for the following ThinkPad products. ThinkPad X1 Yoga Machine types (MT): 20JD, 20JE, 20JF, and 20JG Use this manual along with the advanced diagnostic tests to troubleshoot problems. Important: This manual is intended only for trained service technicians who are familiar with ThinkPad products.
  • Page 6 Hardware Maintenance Manual...

  • Page 7: Chapter 1. Safety Information

    Do not use this type of mat to protect yourself from electrical shock. © Copyright Lenovo 2019...

  • Page 8: Safety Inspection Guide

    • Find the room emergency power-off (EPO) switch, disconnecting switch, or electrical outlet. If an electrical accident occurs, you can then operate the switch or unplug the power cord quickly. • Do not work alone under hazardous conditions or near equipment that has hazardous voltages. •...

  • Page 9: Handling Devices That Are Sensitive To Electrostatic Discharge

    0.1 ohm or less between the external ground pin and the frame ground. b. The power cord should be the authorized type specified for your computer. Go to: http:// www.lenovo.com/serviceparts-lookup c. Insulation must not be frayed or worn. 4. Check for cracked or bulging batteries.

  • Page 10: Grounding Requirements

    – When working on a double-insulated or battery-operated system, use an ESD common ground or reference point. You can use coax or connector-outside shells on these systems. – Use the round ground prong of the ac plug on ac-operated computers. Grounding requirements Electrical grounding of the computer is required for operator safety and correct system function.
  • Page 11 DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 12 Hardware Maintenance Manual...
  • Page 13 PERIGO PERIGO Chapter 1 Safety information...
  • Page 14 PERIGO PERIGO PERIGO PERIGO PERIGO Hardware Maintenance Manual...
  • Page 15 PERIGO DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 16 DANGER DANGER DANGER DANGER VORSICHT Hardware Maintenance Manual...
  • Page 17 VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information...
  • Page 18 VORSICHT VORSICHT VORSICHT Hardware Maintenance Manual...
  • Page 19 Chapter 1 Safety information...
  • Page 20 Hardware Maintenance Manual...
  • Page 21 Chapter 1 Safety information...
  • Page 22 Hardware Maintenance Manual...
  • Page 23 Chapter 1 Safety information...
  • Page 24 Hardware Maintenance Manual...
  • Page 25 Chapter 1 Safety information...
  • Page 26 Hardware Maintenance Manual...

  • Page 27: Chapter 2. Important Service Information

    Lenovo Support Center are available at: http://www.lenovo.com/support/phone • Service training documents for Lenovo authorized service technicians are available at the following Web site. The disassembly and reassembly videos that show the FRU removal and replacement procedures are contained in the documents.

  • Page 28: Important Notice For Replacing A System Board

    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: Fru Identification

    FRU identification Use Lenovo eSupport to identify major FRUs, FRU part numbers, and FRU descriptions for a product at an MT - serial number level. Examples of major FRUs are hard disk drive, system board, and liquid crystal display (LCD).
  • Page 30 Hardware Maintenance Manual...

  • Page 31: Chapter 3. General Checkout

    This chapter introduces following information: • “What to do first” on page 25 • “Checkout guide” on page 26 – “Lenovo Companion” on page 26 – “Quick test programs” on page 26 – “UEFI diagnostic program” on page 27 – “Bootable diagnostic programs” on page 27 •...

  • Page 32: Checkout Guide

    The Lenovo Companion program is available for download at https://shop.lenovo.com/us/en/accessories/ software/apps/lenovo-apps/companion/ To run the Lenovo Companion program, open the Start menu and click Lenovo Companion, and then follow the instructions on the screen. Quick test programs Lenovo provides quick test programs to troubleshoot and resolve computer problems.

  • Page 33: Uefi Diagnostic Program

    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 programs enable you to test computer memory and internal storage devices, view system information, and check and recover the internal storage devices.

  • Page 34: Power System Checkout

    Checking the battery and operational charging Checking the battery This system supports only batteries specially designed for this specific system and manufactured by Lenovo or an authorized builder. The system does not support unauthorized batteries or batteries designed for other systems.

  • Page 35: Checking The Coin-Cell Battery

    Attention: Lenovo has no responsibility for the performance or safety of unauthorized batteries, and provides no warranties for failures or damage arising out of their use. ® Move your pointer to the battery-status icon in the Windows notification area to check the battery status.
  • Page 36 Hardware Maintenance Manual...

  • Page 37: Chapter 4. Related Service Information

    Recovering your operating system if Windows 10 fails to start The Windows recovery environment on your computer operates independently from the Windows 10 operating system. It enables you to recover or repair the operating system even if the Windows 10 operating system fails to start. © Copyright Lenovo 2019...

  • Page 38: Creating And Using A Recovery Usb Drive

    It is recommended that you create a recovery USB drive as early as possible. If you did not create a recovery USB drive as a precautionary measure, you can contact Lenovo Customer Support Center and purchase one from Lenovo. For a list of the Lenovo Support phone numbers for your country or region, go to: http://www.lenovo.com/support/phone Creating a recovery USB drive To create a recovery USB drive, you need a USB drive with at least 16 GB of storage capacity.

  • Page 39: Passwords

    If it has, it can be used for access to the hard disk drive. If no master hard disk password is available, neither Lenovo nor Lenovo authorized service technicians provide any services to reset either the user or the master hard disk password, or to recover data from the hard disk drive. The hard disk drive can be replaced for a scheduled fee.

  • Page 40: How To Remove The Power-On Password

    To put the system back to operational status, the only Lenovo and Lenovo-authorized service solution would be to replace the hard disk drive (HDD) or SSD with a scheduled fee.

  • Page 41: Power Management

    7. Select Hard-disk x password, where x is the letter of the hard disk drive. A pop-up window opens. 8. Select Master hard disk password. 9. Type the current master hard disk password in the Enter Current Password field. Then leave the Enter New Password field blank, and press Enter twice.

  • Page 42: Symptom-To-Fru Index

    When the power is turned on, the computer returns from hibernation mode and resumes operation. The hibernation file in the boot record on the hard disk drive is read, and system status is restored from the hard disk drive. Symptom-to-FRU index This section contains following information: •...

  • Page 43: Error Messages

    Table 1. Numeric error codes (continued) Symptom or error FRU or action, in sequence 0191 1. Run the ThinkPad Setup program, and then save System Security—Invalid Remote Change requested. current setting by pressing F10. 2. System board 0199 1. Run the ThinkPad Setup program, and then save System Security—...

  • Page 44: Beep Symptoms

    Beep symptoms Lenovo SmartBeep technology enables you to decode beep errors with your smartphone when a black screen occurs with beeps from your computer. To decode the beep error with Lenovo SmartBeep technology, do the following: 1. Go to https://support.lenovo.com/smartbeep or scan the following QR Code.

  • Page 45: No-Beep Symptoms

    LCD technology, but excessive pixel problems can cause viewing concerns.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. Notes: •...

  • Page 46: Intermittent Problems

    Table 4. LCD-related symptoms (continued) FRU or action, in sequence Symptom or error • LCD screen unreadable. 1. See important note for “LCD-related symptoms.” • Characters missing pixels. 2. Reseat the LCD connectors. • Screen abnormal. 3. Replace the LCD assembly. •...

  • Page 47: Chapter 5. Yoga Modes

    The computer display can be opened to any angle within a range of up to 360 degrees as shown in the following illustration. By rotating the display to different angle, your computer features the following four YOGA Modes. You can switch between different modes according to your preference and working convenience. Notebook mode Stand mode © Copyright Lenovo 2019...
  • Page 48 Tent mode Tablet mode The X1 Yoga has an improved rise-and-fall keyboard mechanism that works with the four YOGA Modes. • As you open the display into the Notebook mode, the keys are deployed, rising into the typing position. • As you rotate the display further back into the Tent, Tablet, and Stand modes, the keys retract into the body of the computer, providing a flat surface to hold and protect the keyboard when not in use.

  • Page 49: Chapter 6. Locations

    This topic introduces the locations of the computer controls, connectors, and indicators. Front view Ambient light sensor Microphones Conventional camera Infrared camera (available on some models) Multi-touch screen Windows buttons (available on some models) ® TrackPoint pointing stick TrackPoint buttons © Copyright Lenovo 2019...

  • Page 50: Left-Side View

    Trackpad Fingerprint reader NFC label (available on some models) Left-side view USB-C™ connectors (Thunderbolt™ 3 compatible) / USB 3.0 connector power connectors Always On USB 3.0 connector Right-side view ThinkPad Pen Pro Power button Audio connector Mini Ethernet connector HDMI™ connector USB 3.0 connector Security-lock slot Rear view...

  • Page 51: Bottom View

    Bottom view Fan louvers Speakers Emergency-reset hole Status indicators Chapter 6 Locations...

  • Page 52: Locating Frus And Crus

    Table 5. Status indicators Indicator Meaning Camera-status indicator On: The camera is in use. Fn Lock indicator Off: The Fn Lock function is disabled. To initiate the special function of each key, press the corresponding function key directly. To input F1- F12, press the Fn key and the corresponding function key.
  • Page 53 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 http:// .

  • Page 54: Major Frus

    Major FRUs Hardware Maintenance Manual...
  • Page 55 FRU descriptions CRU ID LCD unit (See “LCD FRUs” on page 50.) Trackpad Trackpad cable (See “Miscellaneous parts and other FRUs” on page 51.) Keyboard bezel assembly with keyboard ThinkPad Pen Pro Micro-SIM card door Fingerprint reader bracket Fingerprint reader card Fingerprint reader cable (See “Miscellaneous parts and other FRUs”...

  • Page 56: Lcd Frus

    LCD FRUs FRU descriptions CRU ID LCD stripe bezel LCD panel assembly Sensor card Hardware Maintenance Manual...

  • Page 57: Miscellaneous Parts And Other Frus

    FRU descriptions CRU ID WiGig cable (available on some models) Antenna kit LED cable assembly LCD rear cover assembly Rubber cable holders (See “Miscellaneous parts and other FRUs” on page 51.) Hinges Camera/microphone card LCD cable Miscellaneous parts and other FRUs FRU descriptions Self-service CRU Screw kit...

  • Page 58: Connector And Cable Guide

    Label kit Connector and cable guide This section provides information for Lenovo authorized service technicians to help identify connectors and cables for replacement purpose. To view each FRU and the exploded illustration of the computer, see “Major FRUs” on page 48 and “LCD FRUs” on page 50.
  • Page 59 Connector (location) Internal cable required Cable connection WLAN card slot (internal) Insert the WLAN card into this slot. Camera/LED connector Camera/LED cable assembly Connect one end to the sensor card, one end to (internal) the camera card, and the other end to this connector.
  • Page 60 Connector (location) Internal cable required Cable connection USB 3.0 connector Connect USB-compatible devices. (external) HDMI connector (external) Connect a compatible digital audio device or video monitor to this connector. Camera/microphone card connector and cable Connector (location) Internal cable required Cable connection Camera/LED connector Camera/LED cable assembly Connect one end to the system board, one end...

  • Page 61: Looking Up Fru Information

    Connect one end to the system board, one end to the camera card, and the other end to this connector. Looking up FRU information For detailed FRU information, including part numbers, descriptions, and substitution part numbers, go to http://www.lenovo.com/serviceparts-lookup Chapter 6 Locations...
  • Page 62 Hardware Maintenance Manual...

  • Page 63: Chapter 7. Fru Replacement Notices

    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 http://www.lenovo.com/support...

  • Page 64: Sensor Calibration

    If your system board or LCD unit has been replaced, do the following to make sensor calibration: 1. Download the Windows Sensor Calibration Tool from https://support.lenovo.com 2. Extract the tool into a local driver, such as D:\WinCalibration. 3. Type WindowsCalibrationTool.exe –calibrate a –minimal –updateiss –primaryonly to create a Update.bat file as shown.

  • Page 65: Retaining Serial Numbers

    1. Connect a USB memory key to the computer. 2. Go to and follow the instructions on the screen to create a http://www.lenovo.com/maintenanceutilities Maintenance Key. Note: Only an authorized Lenovo service technician can access the above Web site. 3. Restart the computer. Chapter 7 FRU replacement notices...

  • Page 66: Retaining The Uuid

    Maintenance Key. Note: Only an authorized Lenovo service technician can access the above Web site. 3. Restart the computer. 4. When the logo screen is displayed, press Esc. The ThinkPad Config Information Update Utility interface is displayed.
  • Page 67 2. From the main menu, select 6. Set ECA Information. 3. To read the ECA information, select 2. Read ECA/rework number from EEPROM and follow the instructions on the screen. 4. To read the box build date, select 5. Read box build date from EEPROM, and follow the instruction on the screen.
  • Page 68 Hardware Maintenance Manual...

  • Page 69: Chapter 8. Removing Or Replacing A Fru

    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 is available for downloading at http:// www.lenovo.com/support...

  • Page 70: Before Servicing The Computer

    Before servicing the computer Carefully read this topic before servicing the computer. Removing external devices Before you start servicing, ensure that you remove all external devices installed by the customer, such as MicroSD card, dock, and external display. Disabling the built-in battery Before replacing any FRU/CRU, ensure that you disable Fast Startup first and then disable the built-in battery.

  • Page 71: Removing A Major Fru

    Removing a major FRU This section provides instructions on how to remove a major FRU. 1010 Base cover assembly Removal steps of the base cover assembly Label locations on the base cover assembly The following illustration shows the location of each label. Chapter 8 Removing or replacing a FRU...

  • Page 72: 1020 M.2 Ssd

    Certificate of Authenticity label Genuine Microsoft label IMEI label CECP label S/N label FCC ID/IC label Asset tag Country label 1020 M.2 SSD For access, remove this FRU: • “1010 Base cover assembly” on page 65 Attention: • Do not drop the drive or apply any physical shock to it. The drive is sensitive to physical shock. Improper handling can cause damage and permanent loss of data.

  • Page 73: 1030 Wlan Card

    Removal steps of the M.2 SSD Step Screw (quantity) Color Torque M2 × L2.5 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm) 1030 WLAN card Note: This information is only for the user-replaceable modules. For access, remove this FRU: •...

  • Page 74: 1040 Wwan Card

    Removal steps of the WLAN card Note: The illustration is for WLAN card with WiGig function. For WLAN card without WiGig function, the card has only two antenna connectors. Torque Step Screw (quantity) Color M2 × L2.5 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm)

  • Page 75: 1050 Coin-Cell Battery

    Removal steps of the WWAN card Torque Step Screw (quantity) Color M2 × L2.5 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm) When installing: Plug the red cable into the main connector and the blue cable into the auxiliary connector. 1050 Coin-cell battery For access, remove this FRU: •...

  • Page 76: 1060 Thermal Fan Assembly

    1060 Thermal fan assembly For access, remove this FRU: • “1010 Base cover assembly” on page 65 Removal steps of the thermal fan assembly When installing: • Do not touch the top and bottom areas marked in the following illustration. Hardware Maintenance Manual...

  • Page 77: 1070 Speaker Assembly

    • Tighten the screws in ascending order by following the number marked beside each screw. Otherwise, the system board might get damaged. 1070 Speaker assembly For access, remove this FRU: • “1010 Base cover assembly” on page 65 Removal steps of the speaker assembly Step Screw (quantity) Color...
  • Page 78 Hardware Maintenance Manual...

  • Page 79: 1080 Battery

    The only exception to this is if the battery is physically damaged or a customer is reporting a possible safety issue. If the Lenovo Solution Center program is not installed on the computer, the customer should download and install the program to diagnose the battery, before getting a non-physically damaged battery replaced. Note that the replacement of a physically damaged battery is not covered by the warranty.

  • Page 80: 1090 Power Button Card And Power-Button-Card Cable

    Installing the battery Note: Ensure that the two battery tabs are inserted underneath the system board. 1090 Power button card and power-button-card cable For access, remove these FRUs in order: • “1010 Base cover assembly” on page 65 Hardware Maintenance Manual...

  • Page 81: 1100 Fingerprint Reader Assembly And Fingerprint Reader Cable

    • “1020 M.2 SSD” on page 66 • “1030 WLAN card” on page 67 • “1040 WWAN card” on page 68 • “1050 Coin-cell battery” on page 69 • “1060 Thermal fan assembly” on page 70 • “1070 Speaker assembly” on page 71 “1080 Battery” on page 73 •...
  • Page 82 Removal steps of the fingerprint reader assembly and the fingerprint reader cable Step Screw (quantity) Color Torque M2 × L2.5 mm, flat-head, nylon-coated (2) Black 0.181 Nm (1.85 kgf-cm) Hardware Maintenance Manual...

  • Page 83: 1110 Trackpad Cable, Trackpad Support Bracket, And Trackpad Assembly

    1110 Trackpad cable, trackpad support bracket, and trackpad assembly For access, remove this FRU: • “1010 Base cover assembly” on page 65 • “1070 Speaker assembly” on page 71 • “1080 Battery” on page 73 Removal steps of the trackpad cable, trackpad support bracket, and trackpad assembly Step Screw (quantity) Color...

  • Page 84: 1120 Nfc Module, Nfc Cable, And Nfc Antenna

    1120 NFC module, NFC cable, and NFC antenna For access, remove this FRU: • “1010 Base cover assembly” on page 65 • “1070 Speaker assembly” on page 71 • “1080 Battery” on page 73 Removal steps of the NFC module, the NFC cable, and the NFC antenna Hardware Maintenance Manual...

  • Page 85: 1130 Pen Charger

    1130 Pen charger For access, remove this FRU: • “1010 Base cover assembly” on page 65 • “1070 Speaker assembly” on page 71 Removal steps of the pen charger Step Screw (quantity) Color Torque M2 × L5 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm)
  • Page 86 • “1030 WLAN card” on page 67 • “1040 WWAN card” on page 68 • “1050 Coin-cell battery” on page 69 • “1060 Thermal fan assembly” on page 70 • “1070 Speaker assembly” on page 71 “1080 Battery” on page 73 Removal steps of the system board assembly Torque Step...
  • Page 87 Step Screw (quantity) Color Torque M2 × L2.5 mm, flat-head, nylon-coated (9) Black 0.181 Nm (1.85 kgf-cm) Black 0.181 Nm M2 × L5 mm, flat-head, nylon-coated (1) (1.85 kgf-cm) Chapter 8 Removing or replacing a FRU...

  • Page 88: 1150 Lcd Unit

    1150 LCD unit Note: If you replace the LCD unit, remember to make the sensor calibration. For details, see “Sensor calibration” on page 58. For access, remove these FRUs in order: • “1010 Base cover assembly” on page 65 • “1070 Speaker assembly” on page 71 “1080 Battery” on page 73 •...

  • Page 89: Removing An Lcd Fru

    Removing an LCD FRU This section provides instructions on how to remove an LCD FRU. 2010 Stripe cover For access, remove these FRUs in order: • “1010 Base cover assembly” on page 65 • “1070 Speaker assembly” on page 71 •...

  • Page 90: 2020 Lcd Panel Assembly And Lcd Cable

    Removal steps of the stripe cover 2020 LCD panel assembly and LCD cable For access, remove these FRUs in order: • “1010 Base cover assembly” on page 65 • “1070 Speaker assembly” on page 71 • “1080 Battery” on page 73 •...
  • Page 91 Step Screw (quantity) Color Torque Black 0.181 Nm M2 × L3 mm, flat-head, nylon-coated (2) (1.85 kgf-cm) When installing: Ensure that the LCD panel assembly is hooked into place as shown in the following illustrations. Chapter 8 Removing or replacing a FRU...
  • Page 92 Hardware Maintenance Manual...

  • Page 93: 2030 Camera/Microphone Card And Sensor Card

    Removal steps of the LCD cable 2030 Camera/microphone card and sensor card For access, remove these FRUs in order: • “1010 Base cover assembly” on page 65 • “1070 Speaker assembly” on page 71 • “1080 Battery” on page 73 •...
  • Page 94 Removal steps of the sensor card Hardware Maintenance Manual...

  • Page 95: 2040 Hinges

    2040 Hinges For access, remove these FRUs in order: • “1010 Base cover assembly” on page 65 • “1070 Speaker assembly” on page 71 • “1080 Battery” on page 73 • “1140 System board assembly” on page 79 • “1150 LCD unit” on page 82 •...

  • Page 96: 2050 Wigig Cable And Antenna Kit

    Torque Step Screw (quantity) Color M2 × L2 mm, big-head, nylon-coated (4) Black 0.181 Nm (1.85 kgf-cm) 2050 WiGig cable and antenna kit For access, remove these FRUs in order: • “1010 Base cover assembly” on page 65 • “1070 Speaker assembly” on page 71 •...
  • Page 97 Removal steps of the antenna kit for models without the WiGig function Chapter 8 Removing or replacing a FRU...
  • Page 98 Removal steps of the antenna kit for models with the WiGig function Antenna locations for models without the WiGig function Hardware Maintenance Manual...

  • Page 99: 2060 Led Cable Assembly

    WWAN main antenna (red) WLAN main antenna (gray) WWAN auxiliary antenna (blue) WLAN auxiliary antenna (black) Antenna locations for models with the WiGig function WiGig antenna (black) WLAN main antenna (gray) WLAN auxiliary antenna (black) 2060 LED cable assembly For access, remove these FRUs in order: •...
  • Page 100 Removal step of the LED cable assembly Hardware Maintenance Manual...

  • Page 101: 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 102 Electronic emissions notices For electronic emission information on Class B digital devices, refer to the corresponding information in the User Guide. Trademarks The following terms are trademarks of Lenovo in the United States, other countries or both: Lenovo ThinkPad TrackPoint Microsoft, Windows, and Windows Server are trademarks of the Microsoft group of companies.
  • Page 104 Part Number: SP40K88722_03 Printed in (1P) P/N: SP40K88722_03 *1PSP40K88722_03*...

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