Lenovo ThinkPad X1 Nano Gen 2 Laptop Hardware Maintenance Manual PDF

ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

Third Edition (July 2022)

Copyright Lenovo 2022.

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- 35F-05925.

Contents

About this manual . . . . . . . . . . . . iii

Chapter 1. Safety information . . . . . . 1 General safety . . . . . . . . . . . . . . . . 1 Electrical safety . . . . . . . . . . . . . . . . 1 Safety inspection guide . . . . . . . . . . . . . 3 Handling devices that are sensitive to electrostatic discharge . . . . . . . . . . . . . . . . . . 3 Grounding requirements . . . . . . . . . . . . 4 Safety notices (multilingual translations) . . . . . . 4

Chapter 2. Important service information . . . . . . . . . . . . . . . 21 Strategy for replacing FRUs . . . . . . . . . . 21

Strategy for replacing a solid-state drive . . . 21 How to use error message . . . . . . . . . 22

Strategy for replacing FRUs for CTO, special-bid, and standard models. . . . . . . . . . . . . 22

Product definition . . . . . . . . . . . . 22 FRU identification . . . . . . . . . . . . 22

Chapter 3. General checkout . . . . . 23 What to do first . . . . . . . . . . . . . . . 23 Checkout guide . . . . . . . . . . . . . . . 24

Diagnosing problems . . . . . . . . . . . 24 Quick test programs . . . . . . . . . . . 25 UEFI diagnostic program . . . . . . . . . 25 Bootable diagnostic programs . . . . . . . 25

Power system checkout . . . . . . . . . . . 26 Checking the ac power adapter . . . . . . . 26 Checking the built-in battery and operational charging . . . . . . . . . . . . . . . . 27

Chapter 4. Related service information . . . . . . . . . . . . . . . 29 Reset or restore Windows . . . . . . . . . . . 29 Passwords. . . . . . . . . . . . . . . . . 29

Power-on password . . . . . . . . . . . 29 NVMe passwords . . . . . . . . . . . . 29 Supervisor password . . . . . . . . . . . 30 System management password. . . . . . . 30 How to remove the power-on password . . . 31 How to remove the NVMe password . . . . . 31 How to remove the system management password . . . . . . . . . . . . . . . 31

Power management . . . . . . . . . . . . . 32 Sleep mode . . . . . . . . . . . . . . 32 Hibernation mode . . . . . . . . . . . . 32

Symptom-to-FRU index . . . . . . . . . . . 33 Numeric error codes . . . . . . . . . . . 34 Error messages . . . . . . . . . . . . . 35 Beep errors. . . . . . . . . . . . . . . 35 No-beep symptoms . . . . . . . . . . . 37 LCD-related symptoms . . . . . . . . . . 37 Intermittent problems. . . . . . . . . . . 38 Undetermined problems . . . . . . . . . 38

Chapter 5. Special keys . . . . . . . . 41

Chapter 6. Locations . . . . . . . . . 43 Locating computer controls and connectors . . . 43

Front . . . . . . . . . . . . . . . . . 43 Side view . . . . . . . . . . . . . . . 44 Rear . . . . . . . . . . . . . . . . . 45 Bottom . . . . . . . . . . . . . . . . 45

Locating FRUs and CRUs . . . . . . . . . . . 46 Major FRUs and CRUs . . . . . . . . . . 47 Miscellaneous parts . . . . . . . . . . . 49 Connector and cable guide . . . . . . . . 49

Looking up FRU information . . . . . . . . . . 51

Chapter 7. FRU replacement notices . . . . . . . . . . . . . . . . . 53 Service tool kit . . . . . . . . . . . . . . . 53 Screw notices . . . . . . . . . . . . . . . 53 Retaining serial numbers . . . . . . . . . . . 54

Restoring the serial number of the system unit . . . . . . . . . . . . . . . . . . 54 Retaining the UUID. . . . . . . . . . . . 55 Reading or writing the ECA information . . . . 55

Chapter 8. Removing or replacing a FRU. . . . . . . . . . . . . . . . . . . 57 General guidelines. . . . . . . . . . . . . . 57 Before servicing the computer . . . . . . . . . 57

Disabling the built-in battery . . . . . . . . 57 Disable Fast Startup and the built-in battery . . 58 Removing the nano-SIM-card and nano-SIM- card tray . . . . . . . . . . . . . . . . 58

1010 Base cover assembly . . . . . . . . . . 59 1020 2242 M.2 solid-state drive . . . . . . . . 60 1030 Wireless-WAN card (for selected models) . . 60 1040 Thermal fan assembly . . . . . . . . . . 62 1050 Power button board and power button board cable . . . . . . . . . . . . . . . . . . . 63 1060 Built-in battery . . . . . . . . . . . . . 64

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1070 Speaker assembly near the built-in battery . . 65 1080 Trackpad, fingerprint reader and P-sensor cable . . . . . . . . . . . . . . . . . . . 66 1090 Trackpad . . . . . . . . . . . . . . . 67 1100 Fingerprint reader module and bracket . . . 71 1110 Wireless-LAN antenna assembly . . . . . . 72 1120 System board assembly . . . . . . . . . 74 1130 Wireless-WAN antenna assembly (for selected models) . . . . . . . . . . . . . . 76

1140 Speaker assembly near the hinges . . . . . 80 1150 LCD unit . . . . . . . . . . . . . . . 82 1160 Keyboard bezel assembly with keyboard. . . 84

Appendix A. Notices. . . . . . . . . . 85

Appendix B. Abbreviation table . . . . 87

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About this manual

This manual contains service and reference information for the following products:

ThinkPad X1 Nano Gen 2 Machine types (MT): 21E8, 21E9

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 products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively.

Depending on the model, some hardware configuration and software programs might not be available on the computer. 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 21.

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iv ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

Chapter 1. Safety information

This chapter presents following safety information that you need to be familiar with before you service a notebook computer. General safety on page 1 Electrical safety on page 1 Safety inspection guide on page 3 Handling devices that are sensitive to electrostatic discharge on page 3 Grounding requirements on page 4 Safety notices (multilingual translations) on page 4

General safety Follow these rules to ensure general safety:

Observe good housekeeping in the area of the machines during and after maintenance.

When lifting any heavy object:

1. Ensure that you can stand safely without slipping.

2. Distribute the weight of the object equally between your feet.

3. Use a slow lifting force. Never move suddenly or twist when you attempt to lift.

4. Lift by standing or by pushing up with your leg muscles; this action removes the strain from the muscles in your back. Do not attempt to lift any object that weighs more than 16 kg (35 lb) or that you think is too heavy for you.

Do not perform any action that causes hazards to the customer, or that makes the equipment unsafe.

Before you start the machine, ensure that other service technicians and the customer's personnel are not in a hazardous position.

Place removed covers and other parts in a safe place, away from all personnel, while you are servicing the machine.

Keep your tool case away from walk areas so that other people will not trip over it.

Do not wear loose clothing that can be trapped in the moving parts of a machine. Ensure that your sleeves are fastened or rolled up above your elbows. If your hair is long, fasten it.

Insert the ends of your necktie or scarf inside clothing or fasten it with a nonconductive clip, about 8 centimeters (3 inches) from the end.

Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your clothing, because metal objects are good electrical conductors.

Wear safety glasses when you are hammering, drilling, soldering, cutting wire, attaching springs, using solvents, or working in any other conditions that might be hazardous to your eyes.

After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device that is worn or defective.

Reinstall all covers correctly before returning the machine to the customer.

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.

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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). Do not use this type of mat to protect yourself from electrical shock.

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.

Disconnect all power before: Performing a mechanical inspection Working near power supplies Removing or installing main units

Before you start to work on the machine, unplug the power cord. If you cannot unplug it, ask the customer to power off the wall box that supplies power to the machine, and to lock the wall box in the off position.

If you need to work on a machine that has exposed electrical circuits, observe the following precautions: Ensure that another person, familiar with the power-off controls, is near you. That person must be there

to switch off the power, if necessary. Use only one hand when working with powered-on electrical equipment; keep the other hand in your

pocket or behind your back.

CAUTION: An electrical shock can occur only when there is a complete circuit. By observing the above rule, you may prevent a current from passing through your body.

When using testers, set the controls correctly and use the approved probe leads and accessories for that tester.

Stand on suitable rubber mats (obtained locally, if necessary) to insulate you from grounds such as metal floor strips and machine frames.

Observe the special safety precautions when you work with very high voltages. Instructions for these precautions are in the safety sections of maintenance information. Use extreme care when measuring high voltages.

Regularly inspect and maintain your electrical hand tools for safe operational condition.

Do not use worn or broken tools and testers.

Never assume that power has been disconnected from a circuit. First, check that it has been powered off.

Always look carefully for possible hazards in your work area. Examples of these hazards are moist floors, nongrounded power extension cables, power surges, and missing safety grounds.

Do not touch live electrical circuits with the reflective surface of a plastic dental mirror. The surface is conductive; such touching can cause personal injury and machine damage.

Do not service the following parts with the power on: Power supply units Fans Units similar to those listed above

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.

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Safety inspection guide The purpose of this inspection guide is to assist you in identifying potentially unsafe conditions. As each machine was designed and built, required safety items were installed to protect users and service technicians from injury. This guide addresses only those items. You should use good judgment to identify potential safety hazards due to attachment of non-ThinkPad / non-Lenovo features or options not covered by this inspection guide.

If any unsafe conditions are present, you must determine how serious the apparent hazard could be and whether you can continue without first correcting the problem.

Consider these conditions and the safety hazards they present:

Electrical hazards, especially primary power (primary voltage on the frame can cause serious or fatal electrical shock)

Explosive hazards, such as a damaged CRT face or a bulging capacitor

Mechanical hazards, such as loose or missing hardware

To determine whether there are any potentially unsafe conditions, use the following checklist at the beginning of every service task. Begin the checks with the power off, and the power cord disconnected.

Checklist:

1. Check exterior covers for damage (loose, broken, or sharp edges).

2. Turn off the computer. Disconnect the power cord.

3. Check the power cord for:

a. A third-wire ground connector in good condition. Use a meter to measure third-wire ground continuity for 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: https:// support.lenovo.com/partslookup.

c. Insulation must not be frayed or worn.

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.

8. Check for worn, frayed, or pinched cables.

9. Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with.

Handling devices that are sensitive to electrostatic discharge Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to electrostatic discharge (ESD). ESD damage can occur when there is a difference in charge between objects. Protect against ESD damage by equalizing the charge so that the machine, the part, the work mat, and the person handling the part are all at the same charge.

Notes: 1. Use product-specific ESD procedures when they exceed the requirements noted here.

Chapter 1. Safety information 3

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.

Wear a grounded wrist strap against your skin to eliminate static on your body.

Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even when you are wearing a wrist strap.

Use a grounded work mat to provide a static-free work surface. The mat is especially useful when handling ESD-sensitive devices.

Select a grounding system, such as those listed below, to provide protection that meets the specific service requirement.

Note: The use of a grounding system to guard against ESD damage is desirable but not necessary.

Attach the ESD ground clip to any frame ground, ground braid, or green-wire ground.

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. Proper grounding of the electrical outlet can be verified by a certified electrician.

Safety notices (multilingual translations) The safety notices in this section are provided in the following languages: English Arabic Brazilian Portuguese French German Hebrew Japanese Korean Spanish Traditional Chinese

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Chapter 2. Important service information

This chapter introduces following important service information that applies to all machine types supported by this manual: Strategy for replacing FRUs on page 21

Strategy for replacing a solid-state drive on page 21 How to use error message on page 22

Strategy for replacing FRUs for CTO, special-bid, and standard models on page 22 Product definition on page 22 FRU identification on page 22

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

System Disassembly/Reassembly videos that show the FRU removals or replacements for the Lenovo authorized service technicians are available in the following support site: https://support.lenovo.com/us/en/solutions/ht505031

Strategy for replacing FRUs Before replacing parts:

Ensure that all software fixes, drivers, and UEFI BIOS downloads are installed before replacing any FRUs listed in this manual.

After a system board is replaced, ensure that the latest UEFI BIOS is loaded to the system board before completing the service action.

To download software fixes, drivers, and UEFI BIOS, go to https://support.lenovo.com and follow the instructions on the screen.

Use the following strategy to prevent unnecessary expense for replacing and servicing FRUs:

If you are instructed to replace a FRU but the replacement does not correct the problem, reinstall the original FRU before you continue.

Some computers have both a processor board and a system board. If you are instructed to replace either the processor board or the system board, and replacing one of them does not correct the problem, reinstall that board, and then replace the other one.

If an adapter or a device consists of more than one FRU, any of the FRUs may be the cause of the error. Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change. Replace only the FRU that changed the symptoms.

Strategy for replacing a solid-state drive Always try to run a low-level format operation before replacing a solid-state drive. This will erase all data on the drive. Ensure that the customer has a current backup of the data before you perform this task.

Attention: The drive startup sequence in the computer you are servicing might have been changed. Be extremely careful during write operations such as copying, saving, or formatting. If you select an incorrect drive, data or programs can be overwritten.

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How to use error message Use the error codes displayed on the screen to diagnose failures. If more than one error code is displayed, begin the diagnosis with the first error code. Whatever causes the first error code might also cause false error codes. If no error code is displayed, see whether the error symptom is listed in the section of Symptom-to- FRU index on page 33.

Strategy for replacing FRUs for CTO, special-bid, and standard models This topic provides information about the model types and FRU identification.

Product definition This topic introduces different model types and how to identify each type.

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. The model is CTO1 and the default country code is WW (example: 20AACTO1WW).

Special-bid model

This model is a unique configuration that has been negotiated between Lenovo and the customer. A unique MTM consists of a 4-character MT, a 4-character model, and a numeric 2-character country code is provided to the customer to place orders (example: 20AA000955). The country code assigned is numeric and does not designate a specific country or region. The custom model fact sheet for the MTM indicates which country the special bid MTM is set up for. Special-bid offering is not generally announced.

Standard model

Standard models (fixed configuration) are announced and offered to all customers. The MTM portion of the machine label consists of a 4-character MT, a 4-character model, and an alphabetic 2-character country code. The country code assigned is alphabetic and represents a designated country or region (example: 20AA0009UK).

FRU identification To identify FRUs for a product, do the following:

1. Go to https://support.lenovo.com/partslookup.

2. Type the Machine Type in the corresponding field to get a general FRU list. Or type the Serial Number for more detailed FRU information.

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Chapter 3. General checkout

This chapter presents following information: What to do first on page 23 Checkout guide on page 24

Diagnosing problems on page 24 Quick test programs on page 25 UEFI diagnostic program on page 25 Bootable diagnostic programs on page 25

Power system checkout on page 26

Some descriptions in this chapter might not apply to your particular computer.

Before you go to the checkout guide, be sure to read the following important notes.

Important notes:

Only certified trained personnel should service the computer.

Before replacing any FRU, read the entire page on removing and replacing FRUs.

When you replace FRUs, it is recommended to use new nylon-coated screws.

Be extremely careful during such write operations as copying, saving, or formatting. Drives in the computer that you are servicing sequence might have been altered. If you select an incorrect drive, data or programs might be overwritten.

Replace a FRU only with another FRU of the correct model. When you replace a FRU, ensure that the model of the machine and the FRU part number are correct.

A FRU should not be replaced because of a single, unreproducible failure. Single failures can occur for a variety of reasons that have nothing to do with a hardware defect, such as cosmic radiation, ESD, or software errors. Consider replacing a FRU only when a problem recurs. If you suspect that a FRU is defective, clear the error log and run the test again. If the error does not recur, do not replace the FRU.

Be careful not to replace a nondefective FRU.

What to do first When you return a FRU, you must include the following information in the parts exchange form or parts return form that you attach to it:

1. Name and phone number of service technician 2. Date of service 3. Date on which the machine failed 4. Date of purchase 5. Failure symptoms, error codes appearing on the display, and beep symptoms 6. Procedure index and page number in which the failing FRU was detected 7. Failing FRU name and part number 8. Machine type, model number, and serial number 9. Customer's name and address

Note: During the warranty period, the customer may be responsible for repair costs if the computer damage was caused by misuse, accident, modification, unsuitable physical or operating environment, or improper maintenance by the customer. Following is a list of some common items that are not covered under warranty and some symptoms that might indicate that the system was subjected to stress beyond normal use.

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

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The following are not covered under warranty: LCD panel cracked from the application of excessive force or from being dropped Scratched (cosmetic) parts Distortion, deformation, or discoloration of the cosmetic parts Plastic parts, latches, pins, or connectors that have been cracked or broken by excessive force Damage caused by liquid spilled into the system Damage caused by the improper insertion of a PC Card or the installation of an incompatible card Diskette drive damage caused by pressure on the diskette drive cover, foreign material in the drive, or the

insertion of a diskette with multiple labels Damaged or bent diskette eject button Fuses blown by attachment of a nonsupported device Forgotten computer password (making the computer unusable) Sticky keys caused by spilling a liquid onto the keyboard Use of an incorrect ac power adapter on laptop products

The following symptoms might indicate damage caused by nonwarranted activities: Missing parts might be a symptom of unauthorized service or modification. Check for obvious damage to a solid-state drive. If the spindle of a solid-state drive becomes noisy, the

solid-state drive might have been dropped or subject to excessive force.

Checkout guide Use the following procedures as a guide in identifying and correcting problems with the ThinkPad notebook computer.

Note: The diagnostic tests are intended to test only ThinkPad products. The use of non-ThinkPad products, prototype cards, or modified options can lead to false indications of errors and invalid system responses.

1. Identify the failing symptoms in as much detail as possible.

2. Verify the symptoms. Try to re-create the failure by running the diagnostic test or by repeating the operation.

Diagnosing problems Many computer problems can be solved without outside assistance. If you experience a problem with your computer, the first place to start is the troubleshooting information in your computer documentation. If you suspect a software problem, see the documentation, including readme files and help information systems, that come with the operating system or program.

The Vantage app is preinstalled on your computer. It supports the hardware scan function. It combines diagnostic tests, system information collection, security status, and support information, along with hints and tips for optimal system performance.

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.

The troubleshooting information or the diagnostic programs might tell you that you need additional or updated device drivers or other software. You can get the latest technical information and download device drivers and updates from the Lenovo Support Web site at:

https://support.lenovo.com

For additional information, see the help system of the program.

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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.

To run a test using quick test program, do the following:

1. Go to the C:\SWTOOLS\ldiag directory.

2. Double-click the lsc_lite.exe file.

3. When the User Account Control window opens, click Yes.

4. Select the device class to be tested.

5. Select the devices to be tested.

6. Select the test to be performed.

7. Follow the instructions on the screen to start the test. When a problem is detected, information messages are displayed. Refer to the messages to troubleshoot the problem.

UEFI diagnostic program A UEFI diagnostic program is preinstalled on the computer. This 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.

To run the UEFI diagnostic program, do the following:

1. Turn on the computer. If the computer cannot be turned on, go to Power system checkout on page 26, and check the power sources. If an error code is displayed, go to Symptom-to-FRU index on page 33 for error code descriptions and troubleshooting hints.

2. When the logo screen is displayed, repeatedly press and release the F10 key. The main screen of the UEFI diagnostic program is displayed.

3. Follow the instructions on the screen to use the program.

The following table displays the main items of the UEFI diagnostic program. Depending on the model, the items might differ slightly.

Table 1. Items on the main screen of the UEFI diagnostic program

Tests Tools

Memory quick test Memory extended test Memory bit fade test (180 min) Quick storage device test LCD test PCI-e test Motherboard buses test Exit application

System information Generate configuration file Execute from configuration file Recover bad sectors tool

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

Chapter 3. General checkout 25

devices, the LCD, and system board buses. To use the bootable diagnostic program, you can create a bootable diagnostic medium using a USB device or disc.

To create a bootable diagnostic medium, do the following:

1. Go to https://www.lenovo.com/diags.

2. Click Lenovo Bootable Diagnostics.

3. Follow the instructions on the Web site to create a bootable diagnostic medium on a USB device or disc.

To use the diagnostic medium you have created, do one of the following: If you have created the bootable diagnostic medium on a USB device, do the following:

1. Attach the USB device to the computer.

2. Turn on the computer. If the computer cannot be turned on, go to Power system checkout on page 26, and check the power sources. If an error code is displayed, go to Symptom-to-FRU index on page 33 for error code descriptions and troubleshooting hints.

3. When the logo screen is displayed, repeatedly press and release the F12 key. When the Boot Menu window opens, release the F12 key.

4. Use the arrow keys to select USB HDD and then press Enter. The diagnostic program launches.

5. Follow the instructions on the screen to use the diagnostic program. If you have created the bootable diagnostic medium using a disc, do the following:

1. Turn on the computer. If the computer cannot be turned on, go to Power system checkout on page 26, and check the power sources. If an error code is displayed, go to Symptom-to-FRU index on page 33 for error code descriptions and troubleshooting hints.

2. Insert the disc into the optical drive.

3. Restart the computer.

4. When the logo screen is displayed, repeatedly press and release the F12 key. When the Boot Menu window opens, release the F12 key.

5. Use the arrow keys to select ATAPI CDx (x: 0, 1, ...) and then press Enter. The diagnostic program launches.

6. Follow the instructions on the screen to use the diagnostic program.

Power system checkout To verify if a battery or an ac power adapter is functional, do the following:

1. Turn off the computer. 2. Connect the ac power adapter. 3. Turn on the computer. If the computer can be turned on, it means that either the battery or the ac power

adapter is functional. 4. Insert a straightened paper clip into the emergency-reset hole to reset the computer. If the computer is

still powered on, it means that the ac power adapter is functional. 5. Turn off the computer. 6. Disconnect the ac power adapter and turn on the computer. If the computer can be turned on, it means

that the battery is functional.

If you suspect a power problem, see the appropriate one of the following power supply checkouts: Checking the ac power adapter on page 26 Checking the built-in battery and operational charging on page 27

Checking the ac power adapter If the computer fails only when the ac power adapter is used:

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If the power problem occurs only when the docking station or the port replicator is used, replace the docking station or the port replicator.

If the system status indicator does not blink three times when an ac power source is connected, check the power cord of the ac power adapter for correct continuity and installation.

If the computer does not charge during operation, go to Checking the built-in battery and operational charging on page 27.

Note: Noise from the ac power adapter does not always indicate a defect.

Checking the ac power adapter

1. Connect the computer to a power outlet and turn on the computer.

2. Start the Vantage app, and then click Hardware Settings Power. The ac power adapter information is displayed.

Ensure that you use the ac power adapter that is shipped with the computer to provide enough power to the computer. Otherwise, a message will be displayed, prompting you that the computer will not be charged or will be charged slowly.

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. If an unauthorized battery or a battery designed for another systems is installed, the system will not charge.

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. The battery-status icon displays the percentage of battery power remaining and how long you can use your computer before you must charge the battery.

To check whether the battery charges properly during operation, do the following:

1. Discharge the battery to 50% or lower.

2. Connect the computer to ac power to charge the battery. If the battery status icon in the Windows notification area indicates that the battery is not charging, remove the battery and let it return to room temperature.

3. Reinstall the battery. If the battery is still not charging, replace the battery.

4. Check the battery status icon again. If the same error still exists, replace the system board.

Chapter 3. General checkout 27

28 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

Chapter 4. Related service information

This chapter presents following information: Reset or restore Windows on page 29 Passwords on page 29 Power management on page 32 Symptom-to-FRU index on page 33

Service Web site: 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.

1. Go to https://pcsupport.lenovo.com.

2. Detect your computer or manually select your computer model.

3. Click Diagnostics Operating system Diagnostics and then follow the on-screen instructions.

Passwords You can set a power-on password, supervisor password, system management password, or NVMe password in UEFI BIOS to prevent unauthorized access to your computer.

If any of these passwords has been set, a prompt for it will be displayed on the screen whenever the computer is turned on. The computer does not start until the password is entered.

Note: If only a supervisor password is set, the password prompt will not be displayed when the operating system is started.

Power-on password A power-on password protects the system from being turned on by an unauthorized person. The password must be entered before the operating system can be started. For instructions on how to remove the power- on password, see How to remove the power-on password on page 31.

NVMe passwords The NVMe password prevents unauthorized access to the data on the storage drive. When an NVMe password is set, you are prompted to type a correct password each time you try to access the storage drive.

Single Password

When a Single NVMe password is set, the user must enter the user NVMe password to access files and applications on the storage drive.

Dual Password (User + Admin)

Copyright Lenovo 2022 29

The admin NVMe password is set and used by a system administrator. It enables the administrator to access any storage drive in a system or any computer connected in the same network. The administrator can also assign a user NVMe password for each computer in the network. The user of the computer can change the user NVMe password as desired, but only the administrator can remove the user NVMe password.

When prompted to enter an NVMe password, press F1 to switch between the admin NVMe password and user NVMe password.

Notes: The NVMe password is not available in the following situations:

A Trusted Computing Group (TCG) Opal-compliant storage drive and a TCG Opal management software program are installed in the computer, and the TCG Opal management software program is activated.

For Intel models, when an eDrive storage drive is installed in the computer preinstalled with the Windows 10 operating system.

Supervisor password The supervisor password protects the system information stored in UEFI BIOS. It provides the following security features:

If only a supervisor password is set, a password prompt is displayed when you try to enter the UEFI BIOS menu. Unauthorized users cannot change most of the system configuration options in the UEFI BIOS menu without the password.

The system administrator can use the supervisor password to access a computer even if the user of that computer has set a power-on password. The supervisor password overrides the power-on password.

The system administrator can set the same supervisor password on many ThinkPad notebook computers to make administration easier.

Attention: If the supervisor password has been forgotten and cannot be made available to the service technician, there is no service procedure to reset the password. The system board must be replaced for a scheduled fee.

System management 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.

You can enable the system management password to have the same authority as the supervisor password to control security related features. To customize the authority of the system management password through the UEFI BIOS menu:

1. Enter the UEFI BIOS menu.

Note: When you are prompted, enter the correct supervisor password if a supervisor password has been set, or enter the correct system management password if no supervisor password has been set. Otherwise, you cannot change the configurations in the following steps.

2. Select Security Password System Management Password Access Control.

3. Follow the on-screen instructions.

If you have set both the supervisor password and the system management password, the supervisor password overrides the system management password. If you have set both the system management

30 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

password and the power-on password, the system management password overrides the power-on password.

How to remove the power-on password To remove the power-on password, do one of the following:

If no supervisor password has been set, do the following to remove the power-on password: 1. Turn off the computer. 2. Remove the battery. For instructions on how to remove the battery, see 1060 Built-in battery on page

64. 3. Turn on the computer and wait until the POST ends. After the POST ends, the password prompt will not

be displayed. The power-on password has been removed.

4. Reinstall the battery.

If a supervisor password has been set and is known to the service technician, do the following to remove the power-on password:

1. Turn on the computer.

2. When the ThinkPad logo is displayed, immediately press F1. 3. Type the supervisor password to enter the UEFI BIOS menu. 4. Select Security.

5. Select Password. 6. Select Power-On Password. 7. Type the current supervisor password in the Enter Current Password field. Then, leave the Enter New

Password field blank, and press Enter twice. 8. In the Changes have been saved window, press Enter. 9. Press F10 to save changes and exit.

How to remove the NVMe password If you forget your NVMe password (Single password) or both user and admin NVMe passwords (Dual 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. To check whether the storage drive is a CRU and the relevant replacement procedure, see Major FRUs and CRUs on page 47.

How to remove the system management password To remove a system management password, do the following:

If no supervisor password has been set, do the following to remove the system management password: 1. Turn off the computer and disconnect ac power.

2. Disable the built-in battery. See Disabling the built-in battery on page 57. 3. Remove the base cover assembly. See 1010 Base cover assembly on page 59. 4. Remove the built-in battery. See 1060 Built-in battery on page 64.

5. Reinstall the built-in battery. 6. Reinstall the base cover assembly. 7. Reconnect ac power.

Chapter 4. Related service information 31

8. Turn on the computer and wait until the POST ends. After the POST ends, the password prompt does not appear. The system management password has been removed.

If a supervisor password has been set and is known to the service technician, do the following to remove the system management password:

1. Turn on the computer. 2. When the ThinkPad logo is displayed, immediately press F1.

3. Type the supervisor password to enter the ThinkPad Setup program. 4. Select Security. 5. Select Password. 6. Select System Management Password.

7. Type the current supervisor password in the Enter Current Password field. Then leave the Enter New Password field blank, and press Enter twice.

8. In the Changes have been saved window, press Enter.

9. Press F10 to save changes and exit the ThinkPad Setup program. The system management password has been removed.

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.

To enter sleep mode, press Fn+4 or open the Start menu.

In certain circumstances, the computer goes into sleep mode automatically:

After a period of inactivity specified in power plan settings

When the battery power is low

To resume the computer from sleep mode, press the power button.

Also, in either of the following events, the computer automatically returns from sleep mode and resumes operation:

The ring indicator (RI) is signaled by a serial device or a PC Card device.

The time set on the resume timer elapses.

Note: The computer does not accept any input immediately after it enters sleep mode. Wait a few seconds before taking any action to reenter operation mode.

Hibernation mode In hibernation mode, the following occurs:

The system status, RAM, VRAM, and setup data are stored on the solid-state drive.

The system is powered off.

32 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

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.

If you have defined one of the following actions as the event that causes the system to go into hibernation mode, perform that action. Closing the lid. Pressing the power button.

Also, the computer goes into hibernation mode automatically after a period of inactivity specified in power plan settings.

When the power is turned on, the computer returns from hibernation mode and resumes operation. The hibernation file in the boot record on the solid-state drive is read, and system status is restored from the solid-state drive.

Symptom-to-FRU index This section contains following information: Numeric error codes on page 34 Error messages on page 35 Beep errors on page 35 No-beep symptoms on page 37 LCD-related symptoms on page 37 Intermittent problems on page 38 Undetermined problems on page 38

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. If replacing a FRU does not solve the problem, put the original part back in the computer. Do not replace a nondefective FRU.

This index can also help you determine, during regular servicing, what FRUs are likely to need to be replaced next.

A numeric error is displayed for each error detected in POST or system operation. In the displays, n can be any number.

If no numeric code is displayed, check the narrative descriptions of symptoms. If the symptom is not described there, go to Intermittent problems on page 38.

Note: For a device not supported by diagnostic codes in the ThinkPad notebook computers, see the manual for that device.

Chapter 4. Related service information 33

Numeric error codes Table 2. Numeric error codes

Symptom or error FRU or action, in sequence

0177 Bad SVP data, stop POST taskThe checksum of the supervisor password in the EEPROM is not correct.

Replace the system board.

0183 Bad CRC of Security Settings in EFI Variable. Enter the ThinkPad Setup program. The checksum of the Security settings in the EFI Variable is not correct.

1. Run the ThinkPad Setup program. The settings will be corrected automatically. Then save the current settings by pressing F10.

2. Replace the system board.

0187 EEAIA data access error - The access to EEPROM is failed.

Replace the system board.

0188 Invalid RFID Serialization Information Area.

Replace the system board.

0189 Invalid RFID configuration information area - The EEPROM checksum is not correct.

Replace the system board.

0190 Critical low-battery error

1. Charge the battery. 2. Replace the battery.

0191 System Security - Invalid Remote Change requested.

1. Run the ThinkPad Setup program, and then save current setting by pressing F10.

2. Replace the system board.

0199 System Security - Security password retry count exceeded.

1. Run the ThinkPad Setup program. The retry count will be reset. Then save the current settings by pressing F10.

2. Replace the system board.

0270 Real Time Clock Error.

Have the computer serviced.

0271 Check Date and Time settings.

Run ThinkPad Setup to reset the time and date.

1802 Unauthorized network card is plugged in - Turn off and remove the network card.

1. Remove the network card. 2. Replace the system board.

1820 More than one external fingerprint reader is attached. Power off and remove all but the reader that you set up within your main operating system.

Remove all but the reader that you set up for the authentication.

2100 Detection error on Main HDD (SSD0) or Detection error on Main HDD (HDD0)

1. Reseat the M.2 solid-state drive. 2. Replace the M.2 solid-state drive. 3. Replace the system board.

2110 Read error on Main HDD (SSD0) or Read error on Main HDD (HDD0)

1. Reseat the M.2 solid-state drive. 2. Replace the M.2 solid-state drive. 3. Replace the system board.

2200 Machine Type and Serial Number are invalid.

Have the computer serviced.

2201 Machine UUID is invalid

Replace the system board.

34 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

Table 2. Numeric error codes (continued)

2202 Product Name is invalid.

Have the computer serviced.

2203 System configuration is invalid.

Have the computer serviced.

2204 System configuration data is invalid.

Have the computer serviced.

Error messages Table 3. Error messages

Symptom or error FRU or action, in sequence

Fan error. (two short beeps)

1. Replace the fan. 2. Apply thermal grease. 3. Replace the system board.

Thermal sensing error. Replace the system board.

The battery installed is not supported by this system and will not charge. Please replace the battery with the correct Lenovo battery for this system. Press the ESC key to continue.

Replace the battery.

This system does not support batteries that are not genuine Lenovo-made or authorized. The system will continue to boot, but may not charge unauthorized batteries. Press the ESC key to continue.

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.

Replace the battery.

Beep errors 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.

2. Download the proper diagnostic app and install it on your smartphone.

3. Run the diagnostic app and place the smartphone near the computer.

Chapter 4. Related service information 35

4. Press the Fn key on your computer to emit the beep again. The diagnostic app decodes the beep error and shows possible solutions on the smartphone.

The following section describes some beep errors and the corresponding solutions.

Note: Do not attempt to service a product yourself unless instructed to do so by the Customer Support Center or product documentation. Only use a Lenovo-authorized service provider to repair your product.

Error codes Solutions

0001: Reset error (platform reset not de-asserted) 1. Remove the ac power adapter and the removable battery if your computer has one. Then, reset the computer by doing one of the following:

For models with the emergency-reset hole, insert a straightened paper clip into the emergency-reset hole. Wait for one minute. Then, reconnect all power resources and restart the computer.

For models without the emergency-reset hole, press and hold the power button for about seven seconds. Then, reconnect to all power resources and restart the computer.

2. If step 1 does not work, replace the system board (service provider only).

0002: Internal bus error Replace the system board (service provider only).

0281: General embedded controller error Replace the system board (service provider only).

0282: Memory module error 1. Reinstall or replace the memory module.

2. If step 1 does not work, replace the system board (service provider only).

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 error (might be the BIOS code validation failure)

Replace the system board (service provider only).

0285: TCG-compliant functionality-related error (might be the TPM initialization failure)

Replace the system board (service provider only).

0286: Integrated graphics error Replace the system board (service provider only).

36 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

Error codes Solutions

0287: Discrete graphics error 1. Reinstall or replace the discrete graphics card (service provider only).

2. If step 1 does not work, replace the system board (service provider only).

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).

If the external display works, replace the LCD panel (service provider only).

If the external display does not work, replace the system board (service provider only).

No-beep symptoms Table 4. No-beep symptoms

Symptom or error FRU or action, in sequence

No beep, power-on indicator on, LCD blank, and no POST.

1. Run LCD Self Test. 2. Ensure that every connector is connected tightly and

correctly. 3. Reseat memory module. 4. Replace the system board.

No beep, power-on indicator on, and LCD blank during POST.

1. Run LCD Self Test. 2. Reseat memory module. 3. Replace the system board.

No beep, power-on indicator on, LCD blank, and LED indicators on Esc, F1 and F4 blink sequentially during POST.

BIOS is performing memory retraining. Do not press the power button to interrupt this process. Wait a few minutes until the logo screen is displayed.

The power-on password prompt appears. A power-on password or a supervisor password is set. Type the password and press Enter.

The NVMe password prompt appears. An NVMe password is set. Type the password and press Enter.

LCD-related symptoms Important: The TFT LCD for the notebook computer contains many thin-film transistors (TFTs). The presence of a small number of dots that are missing, discolored, or always lighted is characteristic of TFT 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: This policy applies to all ThinkPad Notebooks purchased on 1 January, 2008 or later. Lenovo will not provide warranty replacement if the LCD is within specifications because we cannot

guarantee that any replacement LCD will have zero pixel defects.

Chapter 4. Related service information 37

One pixel consists of R, G, B sub-pixels.

LCD Self Test

When you turn on the computer and the LCD goes black, run LCD Self Test to help you determine whether the LCD functions normally.

To run LCD Self Test:

1. Ensure that the computer is connected to ac power. Then, press the power button for about seven seconds to turn off the computer.

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.

3. The test lasts for about 20 seconds and then exits automatically. You also can press the power button to exit the test.

Table 5. LCD-related symptoms

Symptom or error FRU or action, in sequence

No beep, power-on indicator on, and a blank LCD during POST.

1. Run LCD Self Test. 2. Replace the system board.

LCD backlight not working. LCD too dark. LCD brightness cannot be adjusted. LCD contrast cannot be adjusted.

1. Reseat the LCD connectors. 2. Replace the LCD assembly. 3. Replace the system board.

LCD screen unreadable. Characters missing pixels. Screen abnormal. Wrong color displayed.

1. See important note for LCD-related symptoms. 2. Reseat all LCD connectors. 3. Replace the LCD assembly. 4. Replace the system board.

Horizontal or vertical lines displayed on LCD. Replace the LCD assembly.

Intermittent problems Intermittent system hang problems might happen due to a variety of causes that have nothing to do with a hardware defect, such as cosmic radiation, ESD, or software errors. FRU replacement should be considered only when a problem recurs.

When analyzing an intermittent problem, do the following:

1. Run the diagnostic test for the system board in loop mode at least 10 times.

2. If no error is detected, do not replace any FRUs.

3. If any error is detected, replace the FRU shown by the FRU code. Rerun the test to verify that no more errors exist.

Undetermined problems If the diagnostic tests did not identify the device that has failed, if wrong devices are installed, or if the system simply is not operating, follow these procedures to isolate the failing FRU (do not isolate FRUs that have no defects).

Verify that all attached devices are supported by the computer.

Verify that the power supply being used at the time of the failure is operating correctly. See Power system checkout on page 26.

38 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

1. Turn off the computer. 2. Visually check each FRU for damage. Replace any damaged FRU. 3. Remove or disconnect all of the following devices:

a. Non-ThinkPad devices b. Devices attached to the dock c. Printer, mouse, and other external devices d. Battery e. Solid-state drive f. External diskette drive or optical drive g. Memory module h. PC cards

4. Turn on the computer. 5. Determine whether the problem has been solved. 6. If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU. 7. If the problem remains, replace the following FRUs one at a time (do not replace a nondefective FRU):

a. System board b. LCD assembly

Chapter 4. Related service information 39

40 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

Chapter 5. Special keys

+

Invoke the special function printed as an icon on each key or standard function of F1F12 function keys.

FnLock indicator on: standard function

FnLock indicator off: special function

Enable / disable speakers

Decrease volume

Increase volume

Enable / disable microphones

Darken display

Brighten display

Manage external displays

Enable / disable airplane mode

Open / collapse notification center

Answer incoming calls on Microsoft Teams

Decline incoming calls on Microsoft Teams

Customize the function of this key on the Vantage app

+ Open Snipping Tool

+ Toggle keyboard backlight (for selected models)

+ Break operation

+ Pause operation

+ Scroll contents

Copyright Lenovo 2022 41

+ Send system request

+

Enter sleep mode

To wake up the computer, press Fn or the power button.

+ Go to beginning

+ Go to end

42 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

Chapter 6. Locations

Locating computer controls and connectors

Front

Microphone Infrared camera / Camera

Webcam privacy shutter Touch screen

Speaker TrackPoint pointing stick

Copyright Lenovo 2022 43

Fingerprint reader Trackpad

TrackPoint buttons

* for selected models

Side view

Audio connector USB-C (Thunderbolt 4) power connector

USB-C (Thunderbolt 4) connector Power button

* for selected models

44 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

Rear

Nano-SIM-card tray

* for selected models

Bottom

Emergency-reset hole Speaker

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. Connect your computer to ac power and then turn on your computer.

Chapter 6. Locations 45

Locating FRUs and CRUs This topic introduces the following service parts: Major FRUs and CRUs on page 47 Miscellaneous parts on page 49 Connector and cable guide on page 49

Notes: Each FRU is available for all types or models, unless otherwise specified. CRU statement for customers:

You can resolve some problems with your product with a replacement part you can install yourself, called a Customer Replaceable Unit or CRU. Some CRUs are designated as self-service CRUs and others are designated as optional-service CRUs. Installation of self-service CRUs is your responsibility. For optional-service CRUs, you can either install the CRU yourself or you can request that a Service Provider install the CRU according to the warranty service for your product. If you intend on installing the CRU, 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. Click Documentation and then follow the on- screen instructions to find the manual for your product. You might be required to return the defective CRU. When return is required: (1) return instructions, a prepaid shipping label, and a container will be included with the replacement CRU; and (2) you might be charged for the replacement CRU if Lenovo does not receive the defective CRU within thirty (30) days of your receipt of the replacement CRU. See your Lenovo Limited Warranty documentation for full details.

Your computer contains the following types of CRUs and FRUs: Self-service CRUs: Refer to parts that can be installed or replaced easily by customer themselves or by trained

service technicians at an additional cost. Optional-service CRUs: Refer to parts that can be installed or replaced by customers with a greater skill level.

Trained service technicians can also provide service to install or replace the parts under the type of warranty designated for the customers machine.

FRUs: Refer to parts that must be installed or replaced only by trained service technicians. If customers choose to replace the FRUs by themselves, the product warranty might be affected.

46 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

Major FRUs and CRUs

No. FRU descriptions Self-service CRU Optional-service CRU

1 LCD unit Note: LCD unit is a single FRU.

No No

2 Thermal fan assembly No No

Chapter 6. Locations 47

No. FRU descriptions Self-service CRU Optional-service CRU

3 System board No No

4 2242 M.2 solid-state drive bracket Yes No

5 2242 M.2 solid-state drive Yes No

6 Wireless-WAN card* Yes No

7 Speaker assembly (near the built-in battery) No No

8 Wireless-LAN antenna assembly No No

9 MIMO antenna assembly* No No

10 Speaker assembly (near the hinges) No No

11 Base cover assembly Yes No

12 Fingerprint reader module* No No

13 Fingerprint reader bracket* No No

14 Power button board No No

15 Power button board cable No No

16 Trackpad No No

17 Wireless-WAN antenna assembly* No No

18 Trackpad, fingerprint reader and P-sensor cable No No

19 Built-in battery No No

20 C cover with keyboard assembly No No

21 Nano-SIM-card tray* Yes No

a Power cord Yes No

b ac power adapter Yes No

c Miscellaneous parts (See Miscellaneous parts on page 49.)

No No

* for selected models

Note: Depending on the computer model, your computer might look different from the illustration above

48 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

Miscellaneous parts Table 6. Miscellaneous part

FRU descriptions Self-service CRU

Optional-service CRU

Screw kit Screw M1.2 L2.2 mm, Red (6) Screw M1.6 L2.6 mm, Black (12) Screw M2 L1.8 mm, Black (5) Screw M2 L2 mm, Black (6) Screw M2 L2.2 mm, Black (10) Screw M2 L2.3 mm, Silver (4) Screw M2 L3 mm, Black (5) Screw M2 L4.5 mm, Silver (6) Screw M2.5 L3.5 mm, Silver (6) Screw M2 L2.75 mm, Black (3)

No No

Label kit:

Label

Spec

Misc kit:

Trackpad cable connector mylar

C cover RF AL sheet

WWAN thermalpad

SSD thermalpad

Sponges on speaker cable guide

No No

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 47.

Note: Depending on your computer model, some connectors or cables might not be available.

Chapter 6. Locations 49

System board connectors and cables (for selected models)

Item Connector (location) Internal cable required Cable connection

1

Microphone, camera, user presence sensing sensor and LED connector (internal)

The LCD unit comes with the cable.

The LCD unit comes with the cable. Connect the cable to this connector.

2 LCD connector (internal) The LCD unit comes with the

cable. The LCD unit comes with the cable. Connect the cable to this connector.

3 Speaker assembly (near the hinges) (internal)

The speaker assembly comes with the cable.

The speaker assembly comes with the cable. Connect the cable to this connector.

4 Audio connector (external) No Connect headphones or a headset to this

connector.

5 Thunderbolt 4 connectors (external)

No Connect a Thunderbolt 4 compatible device to this connector

6 Speaker assembly (near the built-in battery) (internal)

The speaker assembly comes with the cable.

The speaker assembly comes with the cable. Connect the cable to this connector.

7 2242 M.2 solid-state drive slot (internal)

No Insert an 2242 M.2 SSD into this slot.

8 Built-in battery connector (internal)

No Connect the built-in battery to this connector.

9

Trackpad, fingerprint reader, and P-sensor connector (internal)

Trackpad, fingerprint reader, and P-sensor cable

Connect one end of the cable to the system board, one end to the trackpad, one end to the fingerprint reader and the other end to the P- sensor.

10 Keyboard connector (internal)

The keyboard and keyboard bezel assembly comes with the cable.

The keyboard and keyboard bezel assembly comes with the cable. Connect the keyboard cable to this connector.

11 Thermal fan assembly connector (internal)

The thermal fan assembly comes with the cable.

The thermal fan assembly comes with cable. Connect the cable to this connector.

50 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

Item Connector (location) Internal cable required Cable connection

12 P-sensor connector (internal)

WWAN antenna assembly comes with the cable.

The WWAN antenna assembly comes with the cable. Connect the cable to this connector.

13 Power button cable connector (internal)

Yes Connect one end to the power button board, and one end to this connector

14 Wireless-WAN card slot (internal)

No Insert a Wireless-WAN card into this slot.

15 Nano-SIM-card slot (external)

No Insert a nano-SIM card into this slot to establish WWAN connection.

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 51

52 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

Chapter 7. FRU replacement notices

Read this chapter carefully before replacing any FRU.

Service tool kit Ensure that the following service tool kit is prepared before you service a notebook computer.

No. Tool name Tool type

1 Phillips-head screwdriver Common tool

2 Conductive tweezers Common tool

3 Silicone grease Consumable tool

4 Polyamide tape Consumable tool

5 Mylar tape Consumable tool

6 Eraser Consumable tool

7 Electrical tape Consumable tool

8 Double-sided tape Consumable tool

9 Conductive tape Consumable tool

10 Trackpad jig (this might come with trackpad) Consumable tool

Note: The silicone grease can be applied to the surfaces of the microprocessor and heatsink to eliminate air gaps.

Screw notices Loose screws can cause a reliability problem. In your computer, this problem is addressed with special nylon-coated screws that have the following characteristics:

They maintain tight connections. They do not easily come loose, even with shock or vibration. They are harder to tighten.

Do the following when you service the computer:

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 2022 53

Logic card to plastic

Turn an additional angle of 180 degrees after the screw head touches the surface of the logic card.

Notes:

Ensure that you use the correct screw. It is recommended to use new screws for replacements. If you have a torque screwdriver, tighten all screws firmly to the torque specified in the screw information table for each step.

Ensure torque screwdrivers are calibrated correctly following country specifications.

Retaining serial numbers This topic provides instructions on the following: Restoring the serial number of the system unit on page 54 Retaining the UUID on page 55

Restoring the serial number of the system unit When the computer was manufactured, the EEPROM on the system board was loaded with the serial numbers of the system and all major components. These numbers need to remain the same throughout the life of the computer.

If you replace the system board, you must restore the serial number of the system unit to its original value.

The serial number of the system unit is written on the label attached to the bottom of the computer.

If you cannot find the serial number of the system unit on the bottom of the computer, try the following method to get the number:

Note: For Intel models, before you perform the operation, ensure that the UEFI/Legacy setting within the Startup menu in the ThinkPad Setup program is set to UEFI Only.

1. Connect a USB memory key to the computer. 2. Go to https://www.lenovo.com/maintenanceutilities and follow the instructions on the screen to create a

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.

54 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

5. Type 1 under Enter the action desired, then press Enter. The ThinkPad Serial Number Update Utility for Asset ID screen is displayed.

6. Type 2 under Enter the action desired, then press Enter. The serial number of each device in your computer is displayed; the serial number of the system unit is listed as follows: 20- Serial number

7. Record the serial number of the system unit.

After you replace the system board, do the following to restore the serial number of the system unit: 1. Connect the Maintenance Key to the computer.

2. When the logo is displayed, press Esc. The ThinkPad Config Information Update Utility interface is displayed.

3. Type 1 under Enter the action desired, then press Enter. The ThinkPad Serial Number Update Utility for Asset ID screen is displayed.

4. Type 1 under Enter the action desired, then press Enter. Then follow the instructions on the screen to restore the serial number of the system unit.

Retaining the UUID The Universally Unique Identifier (UUID) is a 128-bit number uniquely assigned to your computer at production and stored in the EEPROM of your system board.

The algorithm that generates the number is designed to provide unique IDs until the year A.D. 3400. No two computers in the world have the same number.

When you replace the system board, perform the following steps to create a new UUID for the system board if the system board does not have a UUID:

Note: For Intel models, before you perform the operation, ensure that the UEFI/Legacy setting within the Startup menu in the ThinkPad Setup program is set to UEFI Only.

1. Connect a USB memory key to the computer.

2. Go to https://www.lenovo.com/maintenanceutilities and follow the instructions on the screen to create a 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.

5. Type 2 under Enter the action desired, then press Enter. The Auto UUID generation utility interface is displayed.

6. Type y under Change UUID. OK? [Y/N], then press Enter. A new UUID is created and written. If a valid UUID already exists, it is not overwritten.

Reading or writing the ECA information Information on Engineering Change Announcements (ECA) is stored in the EEPROM of the system board. The electronic storage of this information simplifies the procedure to check if the ECA has been previously applied to a machine. The machine does not need to be disassembled to check for the ECA application.

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.

2. From the main menu, select 6. Set ECA Information.

Chapter 7. FRU replacement notices 55

3. To read the ECA information, select 2. Read ECA/rework number from EEPROM and follow the instructions on the screen. To read the box build date, select 5. Read box build date from EEPROM, and follow the instruction on the screen.

After an ECA has been applied to the machine, the EEPROM must be updated to reflect the ECA's application. Use the latest version of LENOVO ThinkPad Hardware Maintenance Diskette or Maintenance Key to update the EEPROM.

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.

2. From the main menu, select 6. Set ECA Information. 3. To write the ECA information, select 1. Write ECA/rework number from EEPROM, and follow the

instructions on the screen. To write the box build date, select 4. Write box build date from EEPROM, and follow the instruction on the screen.

If the system board is being replaced, try to read the ECA information from the old system board and transfer the information to the new system. If the system board is inoperable, this will not be possible.

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Chapter 8. Removing or replacing a FRU

This chapter provides instructions on how to remove or replace a FRU.

General guidelines When removing or replacing a FRU, be sure to observe the following general guidelines:

1. Do not try to service any computer unless you have been trained and certified. An untrained person runs the risk of damaging parts.

2. Before replacing any FRU, review Chapter 7 FRU replacement notices on page 53.

3. Begin by removing any FRUs that have to be removed before replacing the failing FRU. Any such FRUs are listed at the beginning of each FRU replacement section. Remove them in the order in which they are listed.

4. Follow the correct sequence in the steps for removing a FRU, as given in the illustrations by the numbers in square callouts.

5. When turning a screw, turn it in the direction as given by the arrow in the illustration.

6. When removing a FRU, move it in the direction as given by the arrow in the illustration. 7. To put the new FRU in place, reverse the removal procedure and follow any notes that pertain to

replacement. 8. When replacing a FRU, use the correct screws as shown in the replacement procedures.

DANGER

Before removing any FRU, turn off the computer, unplug all power cords from electrical outlets, disable the built-in battery, and then disconnect any interconnecting cables.

Attention:

After replacing a FRU, do not turn on the computer until you have made sure that all screws, springs, and other small parts are in place and none are loose inside the computer. Verify this by shaking the computer gently and listening for rattling sounds. Metallic parts or metal flakes can cause electrical short circuits.

The system board is sensitive to, and can be damaged by ESD. Before touching it, establish personal grounding by touching a ground point with one hand or by using an ESD strap.

Before servicing the computer Carefully read this topic before servicing the computer.

Disabling the built-in battery Before replacing any FRU, ensure that you disable Fast Startup first and then disable the built-in battery.

To disable Fast Startup:

1. Go to Control Panel and view by Large icons or Small icons.

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 2022 57

5. Clear the Turn on fast startup check box, and then click Save changes.

To disable the built-in battery:

1. Restart your computer. When the logo screen is displayed, immediately press F1 to enter the UEFI BIOS menu.

2. Select Config Power. The Power submenu is displayed.

3. Select Disable built-in battery and press Enter.

4. Select Yes in the Setup Confirmation window. The built-in battery is disabled and the computer turns off automatically. Wait three to five minutes to let the computer cool.

Disable Fast Startup and the built-in battery Before replacing any CRU, ensure that you disable Fast Startup first and then disable the built-in battery.

To disable Fast Startup:

1. Go to Control Panel and view by Large icons or Small icons.

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.

5. Clear the Turn on fast startup check box, and then click Save changes.

To disable the built-in battery:

1. Enter the setup utility.

2. Select Configuration Disable Built-in Battery and press Enter.

3. Select Yes in the Setup Confirmation window. The built-in battery is disabled and the computer turns off automatically. Wait three to five minutes to let the computer cool.

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.

58 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

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 59

1 Country label 2 IMEI label

3 Asset tag 4 Asset tag_40Y917Y

5 Windows label 6 Serial number label

7 China CECP label 8 GEO label

9 GEO label

1020 2242 M.2 solid-state drive For access, remove this FRU: 1010 Base cover assembly on page 59

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.

Before removing the drive, have the user make a backup copy of all the information on it if possible.

Never remove the drive while the system is operating or in sleep mode.

Removal steps of the 2242 M.2 solid-state drive

Step Screw (quantity) Color Torque

1 M2 L3 mm, flat-head, nylon-coated (2) Black 0.294 Nm (3.0 kgf-cm)

1030 Wireless-WAN card (for selected models) For access, remove this FRU: 1010 Base cover assembly on page 59

60 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

Removal steps of the wireless-WAN card (for models with four antennas)

Step Screw (quantity) Color Torque

2 M2 L2.2 mm, big-hat, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm)

When installing: Ensure that you connect the cables with different colors to the corresponding connectors on the card according to the illustrations above: the orange cable to the connector labeled ORANGE, the blue cable to the connector labeled BLUE, the white and grey cable to the connector labeled WHITE GREY, and the black and grey cable to the connector labeled BLACK GREY.

Removal steps of the wireless-WAN (for models with two antennas)

Chapter 8. Removing or replacing a FRU 61

Step Screw (quantity) Color Torque

2 M2 L2.2 mm, big-hat, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm)

When installing: Ensure that you connect the cables with different colors to the corresponding connectors on the card according to the illustrations above: the orange cable to the connector labeled ORANGE, the blue cable to the connector labeled BLUE.

1040 Thermal fan assembly For access, remove this FRU: 1010 Base cover assembly on page 59

Removal steps of the thermal fan 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, apply thermal grease, at an amount of 0.2 grams, on the part marked a as shown in the following illustrations. Either too much or too less application of grease can cause a thermal problem due to imperfect contact with a component.

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1050 Power button board and power button board cable For access, remove this FRU: 1010 Base cover assembly on page 59

Removal steps of the power button board

Step Screw (quantity) Color Torque

2 M2 L2.2 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm)

Chapter 8. Removing or replacing a FRU 63

Removal steps of the power button board cable

Ensure that you remove the thermal fan before removing the power button board cable.

Step Screw (quantity) Color Torque

2 M2 L2.2 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm)

1060 Built-in battery Important notices for replacing a 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.

The Lenovo Solution Center program provides an automatic battery diagnostic test that determines if the battery is defective. A battery FRU should not be replaced unless this diagnostic test shows that the battery is defective. 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.

For access, remove this FRU: 1010 Base cover assembly on page 59

64 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

Removal steps of the built-in battery

DANGER

Use only the authorized battery specified for your computer. Any other battery could ignite or explode.

Step Screw (quantity) Color Torque

1 M2 L4.5 mm, flat-head, nylon-coated (6) Silver 0.181 Nm (1.85 kgf-cm)

Note: After the built-in battery is removed or re-installed, Date/Time, power-on password and system management passwords are initialized. Press F1 to enter the ThinkPad Setup program to change Date/Time.

1070 Speaker assembly near the built-in battery For access, remove these FRUs: 1010 Base cover assembly on page 59 1060 Built-in battery on page 64

Chapter 8. Removing or replacing a FRU 65

Removal steps of the speaker assembly near the built-in battery

Step Screw (quantity) Color Torque

2 M2 L2.3 mm, big-hat, nylon-coated (4) Gold 0.181 Nm (1.85 kgf-cm)

1080 Trackpad, fingerprint reader and P-sensor cable For access, remove these FRUs in order: 1010 Base cover assembly on page 59 1060 Built-in battery on page 64

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Removal steps of the trackpad, fingerprint reader and P-sensor cable

1090 Trackpad For access, remove these FRUs in order: 1010 Base cover assembly on page 59 1060 Built-in battery on page 64

Chapter 8. Removing or replacing a FRU 67

Removal steps of the trackpad

Step Screw (quantity) Color Torque

4 M2 L1.8 mm, fine pitch, nylon-coated (4) Black 0.181 Nm (1.85 kgf-cm)

68 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

Installation steps of trackpad

1. A trackpad jig might come with the trackpad which is used for fixing the location of the trackpad. Attach the trackpad jig to the trackpad and bend the four angles as shown by arrows below.

Chapter 8. Removing or replacing a FRU 69

2. Install the trackpad with jig as shown.

3. Install the screws to fix the trackpad.

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4. Remove the Jig.

1100 Fingerprint reader module and bracket For access, remove these FRUs in order: 1010 Base cover assembly on page 59 1060 Built-in battery on page 64

Removal steps of the fingerprint reader module and bracket

Chapter 8. Removing or replacing a FRU 71

Step Screw (quantity) Color Torque

3 M2 L1.8 mm, big-hat, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm)

1110 Wireless-LAN antenna assembly For access, remove these FRUs in order: 1010 Base cover assembly on page 59 1040 Thermal fan assembly on page 62 1060 Built-in battery on page 64

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Removal steps of wireless-LAN antenna assembly

Step Screw (quantity) Color Torque

6 M1.6 L2.6 mm, flat-head, nylon-coated (4) Black 0.097 Nm (1.0 kgf-cm)

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.

Chapter 8. Removing or replacing a FRU 73

Antenna locations

a Wireless-LAN antenna (main) b Wireless-LAN antenna (auxiliary)

When installing: Plug the gray cable into the main connector and the black cable into the auxiliary connector.

1120 System board assembly Important notices for handling the system board

When handling the system board, read the following:

The system board has an accelerometer, which can be broken when several thousands of G-forces are applied.

Note: Dropping a system board from a height of as little as six inches so that it falls flat on a hard bench can subject the accelerometer to as much as 6000 G's of shock.

Be careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or composite.

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 material.

For access, remove these FRUs in order: 1010 Base cover assembly on page 59 1020 2242 M.2 solid-state drive on page 60 1030 Wireless-WAN card (for selected models) on page 60 1040 Thermal fan assembly on page 62 1060 Built-in battery on page 64

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Removal steps of the system board assembly

Step Screw (quantity) Color Torque

11 M2 L2.2 mm, big-hat, nylon-coated (9) Black 0.181 Nm (1.85 kgf-cm)

Chapter 8. Removing or replacing a FRU 75

1130 Wireless-WAN antenna assembly (for selected models)

Removal steps of wireless-WAN antenna assembly (for models with MIMO)

For access, remove these FRUs in order: 1010 Base cover assembly on page 59 1020 2242 M.2 solid-state drive on page 60 1030 Wireless-WAN card (for selected models) on page 60 1040 Thermal fan assembly on page 62 1060 Built-in battery on page 64 1070 Speaker assembly near the built-in battery on page 65 1120 System board assembly on page 74

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Step Screw (quantity) Color Torque

1 M1.6 L2.6 mm, flat-head, nylon-coated (4) Black 0.098 Nm (1.05 kgf-cm)

2 M2 L2.2 mm, big-hat, nylon-coated (2) Black 0.181 Nm (1.85 kgf-cm)

Chapter 8. Removing or replacing a FRU 77

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.

When installing: ensure that you connect the orange cable to the main connector, the blue cable to the auxiliary connector, the white and grey cable to the M1 connector, and the black and grey cable to the M2 connector.

Removal steps of WWAN antenna assembly (for models without MIMO)

For access, remove these FRUs in order: 1010 Base cover assembly on page 59 1040 Thermal fan assembly on page 62 1060 Built-in battery on page 64 1070 Speaker assembly near the built-in battery on page 65

78 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

Step Screw (quantity) Color Torque

4 M2 L2.2 mm, big-hat, nylon-coated (2) Black 0.181 Nm (1.85 kgf-cm)

Chapter 8. Removing or replacing a FRU 79

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.

When installing: ensure that you connect the orange cable to the main connector, and the blue cable to the auxiliary connector.

Antenna locations

a Wireless WAN antenna (MIMO 2)* b Wireless WAN antenna (MIMO 1)* c Wireless WAN antenna (auxiliary)* d Wireless WAN antenna (main)*

* for selected models

1140 Speaker assembly near the hinges For access, remove these FRUs: 1010 Base cover assembly on page 59

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1020 2242 M.2 solid-state drive on page 60 1030 Wireless-WAN card (for selected models) on page 60 1040 Thermal fan assembly on page 62 1060 Built-in battery on page 64 1120 System board assembly on page 74 1130 Wireless-WAN antenna assembly (for selected models) on page 76

Removal steps of the speaker assembly near the hinges

Chapter 8. Removing or replacing a FRU 81

Step Screw (quantity) Color Torque

3 M1.6 L2.6 mm, flat-head, nylon-coated (2) Black 0.098 Nm (1.0 kgf-cm)

1150 LCD unit For access, remove these FRUs in order: 1010 Base cover assembly on page 59

Removal steps of the LCD unit

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Step Screw (quantity) Color Torque

5 M2.5 L3.5 mm, flat-head, nylon-coated (6) Silver 0.294 Nm (3.0 kgf-cm)

Chapter 8. Removing or replacing a FRU 83

1160 Keyboard bezel assembly with keyboard To remove the keyboard bezel assembly, remove these FRUs in order: 1010 Base cover assembly on page 59 1020 2242 M.2 solid-state drive on page 60 1030 Wireless-WAN card (for selected models) on page 60 1040 Thermal fan assembly on page 62 1050 Power button board and power button board cable on page 63 1060 Built-in battery on page 64 1070 Speaker assembly near the built-in battery on page 65 1080 Trackpad, fingerprint reader and P-sensor cable on page 66 1090 Trackpad on page 67 1100 Fingerprint reader module and bracket on page 71 1110 Wireless-LAN antenna assembly on page 72 1120 System board assembly on page 74 1130 Wireless-WAN antenna assembly (for selected models) on page 76 1140 Speaker assembly near the hinges on page 80 1150 LCD unit on page 82

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Appendix A. Notices

Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local 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. However, it is the users responsibility to evaluate and verify the operation of any other product, program, or service.

Lenovo may have patents or pending patent applications covering subject matter described in this document. The furnishing of this document does not give you any license to these patents. You can send license inquiries, in writing, to:

Lenovo (United States), Inc. 8001 Development Drive Morrisville, NC 27560 U.S.A. Attention: Lenovo Director of Licensing

LENOVO PROVIDES THIS PUBLICATION AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do not allow disclaimer of express or implied warranties in certain transactions, therefore, this statement may not apply to you.

This information could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. Lenovo may make improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time without notice.

The products described in this document are not intended for use in implantation or other life support applications where malfunction may result in injury or death to persons. The information contained in this document does not affect or change Lenovo product specifications or warranties. Nothing in this document shall operate as an express or implied license or indemnity under the intellectual property rights of Lenovo or third parties. All information contained in this document was obtained in specific environments and is presented as an illustration. The result obtained in other operating environments may vary.

Lenovo may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you.

Any references in this publication to non-Lenovo Web sites are provided for convenience only and do not in any manner serve as an endorsement of those Web sites. The materials at those Web sites are not part of the materials for this Lenovo product, and use of those Web sites is at your own risk.

Any performance data contained herein was determined in a controlled environment. Therefore, the result obtained in other operating environments may vary significantly. Some measurements may have been made on development-level systems and there is no guarantee that these measurements will be the same on generally available systems. Furthermore, some measurements may have been estimated through extrapolation. Actual results may vary. Users of this document should verify the applicable data for their specific environment.

Copyright Lenovo 2022 85

Trademarks LENOVO, LENOVO logo, THINKPAD, THINKPAD logo, TRACKPOINT, and ULTRACONNECT are trademarks of Lenovo. Intel, Intel Optane, and Thunderbolt are trademarks of Intel Corporation or its subsidiaries in the U.S. and/or other countries. Linux is the registered trademark of Linus Torvalds in the U.S. and other countries. Microsoft, Microsoft Teams, Windows, BitLocker, and Cortana are trademarks of the Microsoft group of companies. Mini DisplayPort (mDP) and DisplayPort are trademarks of the Video Electronics Standards Association. NVIDIA is a registered trademark of NVIDIA Corporation. The terms HDMI and HDMI High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries. USB-C is a registered trademark of USB Implementers Forum. Wi-Fi and Miracast are registered trademarks of Wi-Fi Alliance. All other trademarks are the property of their respective owners.

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Appendix B. Abbreviation table

The following table lists all abbreviations used in this manual.

Abbreviation Term

BGA Ball Grid Array

CMOS Complementary Metal Oxide Semiconductor

CMV Custom Model Variant

CRC Cyclic redundancy check

CRT Cathode ray tube

CRU Customer Replaceable Unit

CTO Configure To Order

EAIA Enhanced Asset Information Area

EEPROM Electrically Erasable Programmable Read-Only Memory

EFI Extensible Firmware Interface

ESD Electrostatic discharge

FRU Field Replaceable Unit

GAV General Announce Variant

IC Integrated circuits

LCD Liquid Crystal Display

MTM Machine type and model

POST Power-on self-test

RFID Radio-frequency identification

SVP Supervisor password

UUID Universally unique identifier

Copyright Lenovo 2022 87

88 ThinkPad X1 Nano Gen 2 Hardware Maintenance Manual

Part Number: SP40T80527

Printed in China