Lenovo 21FA0033GE ThinkPad P16 Gen 2 Laptop User Manual

ThinkPad P16 Gen 2
Hardware Maintenance Manual

21FA0033GE ThinkPad P16 Gen 2 Laptop

First Edition (May 2023)
© Copyright Lenovo 2023.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS- 35F-05925.
About this manual
This manual contains service and reference information for the following products:

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 19.

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.
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, nonrounded 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.

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.
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:
DANGER
Before the computer is powered on after FRU replacement, make sure that all screws, springs, and other small parts are in place and are not left loose inside the computer. Verify this by shaking the computer and listening for raffling sounds. Metallic parts or metal flakes can cause electrical short circuits.
DANGER

Some standby batteries contain a small amount of nickel and cadmium. Do not disassemble a standby battery, recharge it, throw it into fire or water, or short-circuit it. Dispose of the battery as required by local ordinances or regulations. Use only the battery in the appropriate parts listing. Use of an incorrect battery can result in ignition or explosion of the battery.
DANGER
The battery pack contains small amounts of nickel. Do not disassemble it, throw it into fire or water, or short-circuit it. Dispose of the battery pack as required by local ordinances or regulations. Use only the battery in the appropriate parts listing when replacing the battery pack. Use of an incorrect battery can result in ignition or explosion of the battery.
DANGER
The lithium battery can cause a fire, an explosion, or a severe burn. Do not recharge it, remove its polarized connector, disassemble it, heat it above 100°C (212°F), incinerate it, or expose its cell contents to water. Dispose of the battery as required by local ordinances or regulations. Use only the battery in the appropriate parts listing. Use of an incorrect battery can result in ignition or explosion of the battery.
DANGER
If the LCD breaks and the fluid from inside the LCD gets into your eyes or on your hands, immediately wash the affected areas with water for at least 15 minutes. Seek medical care if any symptoms from the fluid are present after washing.
DANGER
To avoid shock, do not remove the plastic cover that protects the lower part of the inverter card.
DANGER
Though the main batteries have low voltage, a short-circuited or grounded battery can produce enough current to burn personnel or combustible materials.
DANGER
Unless hot swap is allowed for the FRU being replaced, do as follows before removing it: power off the computer, unplug all power cords from electrical outlets, remove the battery pack, and disconnect any interconnecting cables.

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 19
  – “Strategy for replacing a solid-state drive” on page 19
  – “How to use error message” on page 20

• “Strategy for replacing FRUs for CTO, special-bid, and standard models” on page 20
  – “Product definition” on page 20
  – “FRU identification” on page 20

Important:

• Advise customers to contact the Lenovo Customer Support Center if they need any assistance in obtaining or installing any software fixes, drivers, and UEFI BIOS downloads. Telephone numbers for Lenovo Support are available at: https://pcsupport.lenovo.com/supportphonelist
• 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.
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 31.
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 mode l
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.

Chapter 3. General checkout

This chapter presents following information:

•  “What to do first” on page 21

• “Checkout guide” on page 22
  – “Diagnosing problems” on page 22
  – “Quick test programs” on page 23
  – “UEFI diagnostic program” on page 23
  – “Bootable diagnostic programs” on page 24

• “Power system checkout” on page 24

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 nondetective 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:
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 nonsupport 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.
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 24, and check the power sources. If an error code is displayed, go to “Symptom-to-FRU index” on page 31 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

• Storage
• Memory
• Battery
• CPU
• Display
• FAN
• Keyboard
• Mouse
• PCI Express
• Touch| • System information
• Bad Block Recovery
• Smart Information

Bootable diagnostic programs
If the computer you are servicing is not installed with the UEFI diagnostic program, you can download a bootable diagnostic program from the Lenovo Support Web site. The bootable diagnostic program enables you to view system information and test some hardware devices in your computer, such as memory, storage devices, the LCD, and system board buses. 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 24, and check the power sources. If an error code is displayed, go to “Symptom-to-FRU index” on page 31 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 24, and check the power sources. If an error code is displayed, go to “Symptom-to-FRU index” on page 31 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 25
• “Checking the built-in battery and operational charging” on page 25
• “Checking the coin-cell battery” on page 25

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

•  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 25.

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.

Checking the coin-cell battery
Do the following:

1. Power off the computer, and unplug the ac power adapter from it.
2. Turn the computer upside down.
3. Remove the built-in battery (see “Disabling the built-in battery” on page 63).
4. Remove the coin-cell battery (see “1130 Coin-cell battery” on page 79).
5. Measure the voltage of the battery. See the following figure.

• If the voltage is correct, replace the system board.
• If the voltage is not correct, replace the coin-cell battery.
• If the coin-cell battery discharges quickly after replacement, replace the system board.

Chapter 4. Related service information

This chapter presents following information:

• “Reset or restore Windows” on page 27
• “Passwords” on page 27
• “Power management” on page 30
• “Symptom-to-FRU index” on page 31

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 29.
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)

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 drive 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 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 “1120 Built-in battery” on page 78.
3. Remove the coin-cell battery. For instructions on how to remove the coin-cell battery, see “1130 Coin- cell battery” on page 79.
4. 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.
5. Reinstall the coin-cell battery and 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 49.
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 63.
3. Remove the base cover assembly. See “1070 Base cover assembly” on page 73.
4. Remove the built-in battery. See “1120 Built-in battery” on page 78.
5. Remove the coin-cell battery. See “1130 Coin-cell battery” on page 79.
6. Reinstall the coin-cell battery.
7. Reinstall the built-in battery.
8. Reinstall the base cover assembly.
9. Reconnect ac power.
10. 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.
  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 32
• “Error messages” on page 33
• “Beep errors” on page 33
• “No-beep symptoms” on page 35
• “LCD-related symptoms” on page 36
• “Intermittent problems” on page 37
• “Undetermined problems” on page 37

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 nondetective 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 37.
Note: For a device not supported by diagnostic codes in the ThinkPad notebook computers, see the manual for that device.
Numeric error codes

0177
Bad SVP data, stop POST task—The 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.| 1.Run ThinkPad Setup to reset the time and date.
2.Replace the coin-cell battery and run the ThinkPad Setup program to reset the time and date.
1802
Unauthorized network card is plugged in – Tum off and remove the network card.| 1.Remove the network card.
2.Replace the system board.
1820
More than one extremal 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 (SSDO) or Detection error on Main HDD (HDDO)| 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 (SSDO) or Read error on Main HDD (HDDO)| 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.
Symptom or error| FRU or action, in sequence
---|---
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 2. Error messages

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 Smart Beep 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.
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.
N o te: 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.

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).
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 3. No-beep symptoms

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.
The power-on password prompt appears.| A power-on password or a supervisor password is set. Type the password and press Enter.
No beep, power-on indicator on, LCD blank, and LED indicators on Esc, Fl and F4 blink sequentially during POST.| UEFI BIOS is performing memory retraining. The memory retraining might occur if any of the following situations is detected:
• Memory module replacement
• Total Memory Encryption setting change in UEFI BIOS
• Memory Reference Code [MRC] change when UEFI
BIOS updates
Do not press the power button to interrupt this process.
Wait a few minutes until the logo screen is displayed.
Symptom or error| FRU or action, in sequence
---|---
No beep, power-on indicator on, LCD blank, and LED indicators on Esc, Fl and F4 blink during POST.| UEFI BIOS is self-recovering. If the UEFI BIOS is corrupted or maliciously attacked, it can self-recover and restore computer from the last uncorrupted and secure backup.
The blinking LED indicators on keys indicate the self-recovery progress:
•LED indicator on Esc blinks: 0% to 32%
•LED indicators on Esc and Fl blink simultaneously:  33% to 65%
•LED indicators on Esc, Fl and F4 blink simultaneously: 66% to 100%
Do not press the power button to interrupt this progress.
Wait a few minutes until the logo screen is displayed.
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.
• 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 4. LCD-related symptoms

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 24.

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 nondetective FRU):
   a. System board
   b. LCD assembly

Chapter 5. RAID

Redundant Array of Independent Disks (RAID) is a technology that provides increased storage functions and reliability through redundancy. It also can improve data storage reliability and fault tolerance compared with single- drive storage systems. Data loss resulting from a drive failure can be prevented by reconstructing missing data from the remaining drives.
When a group of independent physical storage drives is set up to use RAID technology, they are in a RAID array. This array distributes data across multiple storage drives, but the array appears to the host computer as one single storage unit. Creating and using RAID arrays provides high performance, such as the expedited I/O performance, because several drives can be accessed simultaneously.
Storage drive requirements for RAID levels
Your computer supports the M.2 Non-Volatile Memory Express (NVMe) solid-state drive.
Note: Ensure that your computer has two identical storage drives installed (two M.2 NVMe solid-state drives with the same capacity) for supported RAID levels. If only one drive is installed, or two different types of drives are installed, the following information does not apply.
Your computer supports the following RAID levels:

• RAID 0: striped disk array (missing data resulting from a drive failure cannot be reconstructed)
  – Consist of two identical storage drives
  – Supported strip size: 4 KB, 8 KB, 16 KB, 32 KB, 64 KB, or 128 KB
  – Better performance without fault tolerance
  – Higher risk of data loss resulting from a member drive failure compared with non-RAID configuration

• RAID 1: mirrored disk array
  – Consist of two identical storage drives
  – Improved reading performance and 100% redundancy

Configuring RAID with the Intel RST configuration utility
This topic provides the following instructions to help you configure RAID with the Intel RST configuration utility:

• How to enter the Intel RST configuration utility
• How to create RAID volumes
• How to delete RAID volumes
• How to reset storage drives to non-RAID
• How to rebuild RAID 1 volumes

Enter the Intel RST configuration utility

1. Ensure that RAID is enabled in the UEFI BIOS menu:
   a. Restart the computer. When the logo screen is displayed, press F1 to enter the UEFI BIOS menu.
   b. Select Config ➙ Storage ➙ VMD Controller ➙ On.
   c. Press F10 to save changes and exit.

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

3. Select Config ➙ Storage ➙ Intel (R) Rapid Storage Technology and then press Enter. The Intel (R) Rapid Storage Technology window opens and the following options are displayed:
   • Create RAID Volume: Create a RAID volume. If no internal storage drives can be used, this option is not available.
   • RAID Volumes: Confirm the information of the created RAID volumes.
   • Non-RAID Physical Disks: Confirm the information of all non-RAID drives.

4. Press the up and down arrow keys to select an option. Press Enter to enter the menu for the selected option. Press Esc to exit the Intel RST configuration utility.

Create RAID volumes
Attention: All the existing data stored on the selected drives will be erased while the RAID volume is being created.

1. Enter the Intel RST configuration utility.

2. Select Create RAID Volume, and then press Enter to open the CREATE RAID VOLUME window.

3. Select and configure the options one by one.
   a. Name: Use the default name or type a preferred name for the RAID volume.
   b. RAID Level: Press Enter to change the RAID between RAID 0 (Stripe) and RAID 1 (Mirror).
   c. Select Disks: Select a drive and press Spacebar or Enter to add it into a group. The drive that cannot
   be used to create a RAID volume is not selectable. An X mark is displayed next to the selected drive.
   d. Strip Size: Select a strip size and press Enter to complete the configuration. This option is only available for RAID 0.
   e. Capacity: Customize the capacity of the RAID volume. The default RAID volume is the largest value.
   f. Create Volume: Press Enter to finish configurations of the preceding options and create a volume.
   Note: The Create Volume option might not be selectable for some reasons, for example, if different types of drives are selected, the option is not selectable. If it is not selectable, see the message displayed under Create Volume for reference.
   After the RAID volume is created, the Intel (R) Rapid Storage Technology window is displayed, and the created volume is displayed under RAID Volumes.

4. Press F10 to save changes and exit.

Delete RAID volumes
Attention: All the existing data stored on the selected drives will be erased after you delete RAID volumes.

1. Enter the Intel RST configuration utility.

2. Select the volume that you want to delete under RAID Volumes. Press Enter to open the RAID VOLUME INFO window.

3. Select Delete and press Enter to delete it from the RAID Volumes list.

4. When prompted, select Yes to confirm the deletion of the selected RAID volume.
   After you delete the RAID volume, the Intel (R) Rapid Storage Technology window is displayed. Member drives of the deleted volume are displayed under Non-RAID Physical Disks.

5. Press F10 to save changes and exit.

Reset storage drives to non-RAID
Attention: All the existing data stored on the selected drive will be erased after you reset it to non-RAID.

1. Enter the Intel RST configuration utility.

2. Select the volume that you want to reset under RAID Volumes. Press Enter to open the RAID VOLUME INFO window.

3. Select the drive that you want to reset under RAID Member Disks. Press Enter to open the PHYSICAL DISK INFO window.

4. Select Reset to Non-RAID and press Enter. When prompted, select Yes to confirm the reset action.
   After the reset process finishes, the Intel (R) Rapid Storage Technology window is displayed. The reset drive is listed under Non-RAID Physical Disks, and the volume of the reset drive is still listed under RAID Volumes. However, the status is changed from Normal to Failed or Degraded.

5. Press F10 to save changes and exit.

Rebuild RAID 1 volumes
If the status of a RAID 1 volume is Failed or Degraded, you can rebuild it through the Intel RST configuration utility. To rebuild a RAID 1 volume, ensure that at least one member drive of the RAID 1 volume works correctly. Replace the failed storage drive with a new one that has the same capacity before you rebuild a RAID 1 volume.

1. Enter the Intel RST configuration utility.
2. Select the volume that you want to rebuild under RAID Volumes. Press Enter to open the RAID VOLUME INFO window.
3. Select Rebuild and press Enter to open the Rebuild Volume window.
4. Select the drive that you want to rebuild and press Enter to initiate the rebuild process. After you initiate the rebuild process, the Intel (R) Rapid Storage Technology window is displayed. The RAID 1 volume under rebuilding is displayed under RAID Volumes with a Rebuilding mark.
5. Wait a few minutes. When the rebuild process finishes successfully, the Rebuilding mark is changed to the Normal mark.
6. Press F10 to save changes and exit.

Chapter 6. Special keys

| Invoke the special function printed as an icon on each key or standard function of
F1–F12 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 the Airplane mode
| Open 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 calculator
| Enter sleep mode
| Open Snipping Tool
| Toggle keyboard backlight
| Break operation
| Pause operation
| Scroll contents
| Send system request
| Enter sleep mode
To wake up the computer, press Fn or the power button.
| Go to beginning
| Go to end

Chapter 7. Locations

Locating computer controls and connectors
Front view

• for selected models
  Side view

* for selected models
Rear view

Bottom view

Emergency-reset hole
Locating FRUs and CRUs
This topic introduces the following service parts:

• “Major FRUs and CRUs” on page 49
• “LCD FRUs and CRUs” on page 52
• “Miscellaneous parts” on page 54
• “Connector and cable guide” on page 54

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 replaced easily by customer themselves or by trained service technicians at an additional cost.
  – Optional-service CRUs: Refer to parts that can be 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 customer’s machine.
  – FRUs: Refer to parts that must be replaced only by trained service technicians. If customers choose to replace the FRUs by themselves, the product warranty might be affected.

Major FRUs and CRUs

Table 5. Major FRUs and CRUs

No.| FRU description| Self-service CRU| Optional-service CRU
---|---|---|---
1| LCD unit| No| No
2| DC-in cable| No| No
3| Fingerprint reader cable| No| No
4| Power button with fingerprint reader| No| No
II| Power button bracket| No| No
6| Keyboard bezel assembly| No| No
U| NFC board’| No| No
a| NFC cable’| No| No
U| Beeper| No| No
10| Thermal fan assembly (for models without discrete GPU)| No| No
11| System board with DDRS absorber box| No| No
12| Service bracket| No| Yes
13| Chassis assembly| No| No
14| Wireless WAN card bracket’| No| Yes
15| Wireless WAN card thermal pad”| No| No
16| Wireless WAN card’| No| Yes
17| Nano-SIM-card tray| Yes| No
18| Speaker| No| No
19| Memory modules| No| Yes
20| M.2 2280 solid-state drive thermal pad| No| No
21| M.2 2280 solid-state drive bracket| No| Yes
22| M.2 2280 solid-state drive| No| Yes
23| Base cover assembly| No| No
24| Service door| Yes| No
25| Coin-cell battery| No| No
26| Built-in battery| No| No
EU| Wireless WAN antenna assembly| No| No
28| Smart card reader cable”| No| No
EA| Dummy smart card reader’| No| No
30| Smart card reader’| No| No
31| Dummy GPU board cable (for models without discrete GPU)| No| No
32| GPU board or dummy GPU board| No| No
33| I/0 board cable| No| No
34| I/0 board| No| No
No.| FRU description| Self-service CRU| Optional-service CRU
---|---|---|---
35| Thermal fan assembly (for models with discrete GPU)| No| No
36| Trackpad cable| No| No
37| Trackpad| No| No
38| Keyboard| No| Yes
39| Hinge caps| No| No
a| Power cord| Yes| No
b| ac power adapter| Yes| No
c| Miscellaneous parts kits (see “Miscellaneous parts” on page 54)| No| No
d| Lenovo factory recovery USB key| No| No
e| Lenovo Precision Pen 2| Yes| No

* for selected models
Notes:

• Depending on the computer model, your computer might look different from the illustration above.
• The Lenovo factory recovery USB key d is used to restore the Microsoft Windows operating system. It might not come with the computer, and a user might order it from https://pcsupport.lenovo.com/lenovorecovery, though additional shipping and handling fees might apply.

LCD FRUs and CRUs
For non-touch models

Table 6. LCD FRUs and CRUs

No.| FRU description| Self-service CRU| Optional-service CRU
---|---|---|---
1| LCD bezel| No| No
2| Microphone rubbers| No| No
3| Microphone board| No| No
4| Camera-and-microphone module| No| No
5| Camera-and-microphone cable| No| No
6| LCD cable| No| No
7| LCD cover assembly| No| No
8| Elastic adhesive tapes| No| No
9| Wireless LAN antenna assembly| No| No
10| MIMO Wireless-WAN antenna assembly*| No| No
11| LCD hinges| No| No
12| LCD panel| No| No

* for selected models
For touch models

Table 7. LCD FRUs and CRUs

No.| FRU description| Self-service CRU| Optional-service CRU
---|---|---|---
1| LCD panel module with X-rite| No| No
2| Microphone rubbers| No| No
3| Microphone board| No| No
4| Camera-and-microphone module| No| No
5| PMIC board| No| No
6| LCD cable| No| No
7| Camera-and-microphone cable| No| No
8| LCD cover assembly| No| No
9| Wireless LAN antenna assembly| No| No
10| MIMO Wireless-WAN antenna assembly*| No| No
11| LCD hinges| No| No
12| LCD strip cover| No| No

* for selected models
Note: Depending on the computer model, your computer might look different from the illustrations above.
Miscellaneous parts
Table 8. Miscellaneous part

Screw kit
• M1.6 x L2.1, black (7)
• M2 x L2, black (3)
• M2 x L2.5, black (5)
• M2 x L3, black (3)
• M2 x L3.2, black (2)
• M2 x L3.5, silver (16)
• M2 x L8, black (6)
• M2 x L11, black (1)
• M2.5 x L4, silver
– 11 (for touch models)
– 6 (for non-touch models)
• M2.5 x L6, black (4)
• Spec| No| No
Mechanical miscellaneous kit
• Wireless WAN card absorber
• Wireless LAN rubber
• Removable tape
• Spec| No| No
Label kit:
• Label
• Spec| 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 49 and “LCD FRUs and CRUs” on page 52.
Note: Depending on your computer model, some connectors or cables might not be available.
System board connectors and cables

Table 9. System board connector and cable guide

No.| Connector/feature| Internal cable required| Cable connection
---|---|---|---
1| USB-C (Thunderbolt 4) connectors (extemal)| No| Connect a USB-C compatible or Thunderbolt 4 compatible device to these connectors.
2| HDMI connector (external)| No| Connect a compatible digital audio device or video monitor to this connector.
3| Thermal fan assembly connector (internal)| Thermal fan assembly cable| The thermal fan assembly comes with the cable. Connect the cable to this connector.
---|---|---|---
4| Memory module slots under the service door (internal)| No| Insert the memory modules into these slots.
5| Built-in battery connector (internal)| No| Connect the built-in battery to this connector.
6| NFC connector (internal)| NFC cable| Connect one end to the NFC board and the other end to this connector.
7| Trackpad connector (internal)| Trackpad cable| Connect one end to the trackpad and the other end to this
connector.
8| M.2 2280 solid-state drive slot under the service door (internal)| No| Insert a 2280 solid-state drive into this slot.
9| GPU board slot (internal)| No| Insert the GPU board into this slot.
10| Coincell battery connector (internal)| Coin-cell battery cable| The coin- cell battery comes with a cable. Connect the cable to this connector.
11| Smart card reader connector (internal)| Smart card reader cable| Connect one end to the smart card reader and the other end to this connector.
12| I/O board connector (internal)| VO board cable| Connect one end to the I/O board and the other end to this connector.
13| Thermal fan assembly connector (internal)| Thermal fan assembly cable| The thermal fan assembly comes with the cable. Connect the cable to this connector.
14| Dummy GPU board connector (internal)| Dummy GPU board cable| Connect one end to the dummy GPU board and the other end to this connector.
15| DC-in connector (internal)| DC-in cable| Connect the DC-in cable to this connector.
16| Wireless LAN connectors (internal)| Wireless antenna assembly cable| The wireless antenna assembly comes with the cables. Connect the cables to these connectors.
17| Fingerprint reader connector (internal)| Fingerprint reader cable| Connect one end to the fingerprint reader and the other end to this connector.
18| Camera-and-microphone connector (internal)| Camera-and-microphone cable| Connect one end to the camera-and-microphone module and the other end to this connector.
19| Wireless WAN main antenna connector (internal)| Wireless WAN main antenna cable| The wireless WAN main antenna comes with the cable. Connect the cable to this connector.
20| Keyboard connectors (internal)| Keyboard cables| The keyboard comes with the cables. Connect the cables to these connectors.
21| M.2 2280 solid-state drive slot under the keyboard (internal)| No| Insert a 2280 solid-state drive into this slot.
---|---|---|---
22| Memory module slots under the keyboard (internal)| No| Insert the memory modules into these slots.
23| Wireless-WAN-card slot (internal)| No| Insert a wireless-WAN card into this slot.
24| LCD connector (internal)| LCD cable| Connect one end to the LCD panel and the other end to this connector.
25| Beeper connector (internal)| Beeper cable| The beeper comes with the cable. Connect the cable to this
connector.
26| Nano-SIM-card slot (external)| No| Insert a Nano Subscriber Identity Module (SIM) card into this slot.
27| Audio connector (external)| No| Connect headphones or a headset with a 3.5-mm (0.14-inch) and Opole plug to this connector.
28| USB-C (3.2 Gen 2) connector (external)| No| Connect a USB-C compatible device to this connector.
29| Always on USB 3.2 connector Gen 1 (external)| Always on USB 3.2 connector Gen 1 cable| Connect a USB-A compatible device to this connector.
30| Speaker connector (internal)| Speaker cable| The speaker comes with cable. Connect the cable to this
connector.

Looking up FRU information
For detailed FRU information, including part numbers, descriptions, and substitution part numbers, go to: https://support.lenovo.com/partslookup

Chapter 8. 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.

Note: The silicone grease can be applied to the surfaces of the microprocessor and heat sink 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.

• 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 60
• “Retaining the UUID” on page 61

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.

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.
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.

Chapter 9. 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 8 “FRU replacement notices” on page 59.
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.
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.

Removing the nano-SIM card and tray (for selected models)
If the computer you are servicing has a nano-SIM card installed, remove the card with the tray together.

After you finish the servicing, ensure that you install the nano-SIM card back into the slot firmly.
Removing the SD card (if any)
If the computer you are servicing has an SD card installed, remove the SD card before you start the servicing.
Push the SD card inward a little bit. Then, release it. The SD card ejects. Gently slide the card out of the card slot.

Note: After you finish the servicing, ensure that you install the SD card back into the slot firmly.
1010 Service door
Removal steps of the service door
Note: Loosen the screw 1 that secures the service door, and remove the service door.

1020 Keyboard
Note: You might be instructed to slide the keyboard frame forward or backward in some of the following steps. In this case, ensure that you do not press or hold the keys while sliding the keyboard frame.
Otherwise, the keyboard frame cannot be moved.
Removal steps of the keyboard

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When installing: Configure the keyboard language in UEFI BIOS:

1. Enter the UEFI BIOS menu.
2. Click Config ➙ Keyboard/Mouse ➙ Keyboard Layout, and then select the keyboard language.

1030 Service bracket
For access, remove this FRU:

• “1020 Keyboard” on page 65

Removal steps of the service bracket

Note: Do not peel off the release paper on the thermal pad when installing the service bracket.

1040 Wireless WAN card (for selected models)
For access, remove this FRU:

• “1020 Keyboard” on page 65

Removal steps of the wireless WAN card

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.
1050 Memory module
Important notice about memory module installation
Your computer comes with four memory module slots, and supports up to 128 GB memory module in total.
Slot a and slot b are under the service door, and slot c and slot d are under the keyboard. When installing or replacing a memory module, use the following guidelines for better performance: Important: It is recommended that you follow below installation rules. Otherwise, the computer might either not start or not perform well.

• To install one or two memory modules in total, install it/them in slot c or/and slot d under the keyboard.
  Do not install it/them in slot a or/and slot b under the service door.

• To install three or four memory modules in total, install two memory modules in the slots under the keyboard first. Then install the third and fourth memory modules in the slots under the service door.

• Your computer supports up to 128 GB memory module in total, and it is recommended that you use memory modules with the same capacity, type and brand for best dual-channel memory performance.

• Replace only with a memory module of the type recommended by Lenovo.

Memory module under the service door
For access, remove this FRU:

• “1010 Service door” on page 65

Removal steps of the memory module under the service door Memory module under the keyboard
For access, remove these FRUs in order:

• “1020 Keyboard” on page 65
• “1030 Service bracket” on page 67

Removal steps memory module under the keyboard When installing:

• Insert the notched end of the memory module into the memory slot. Press the memory module in firmly, and pivot it downward until it snaps into place. Ensure that the memory module is firmly installed in the slot and does not move easily.
• Memory module replacement might cause memory retraining during POST. When memory retraining occurs, the screen might be blank. You might see the LED indicators on Esc, F1, and F4 blinking sequentially to indicate the progress. Do not press the power button to interrupt the process. Wait a few minutes until the logo screen is displayed.

1060 M.2 2280 solid-state drive
Attention: The M.2 solid-state drive is sensitive. Inappropriate handling might cause damage and permanent loss of data.
When handling the M.2 solid-state drive, observe the following guidelines:

• Replace the M.2 solid-state drive only for repair. The M.2 solid-state drive is not designed for frequent changes or replacement.
• Before replacing the M.2 solid-state drive, make a backup copy of all the data that you want to keep.
• Do not apply pressure to the M.2 solid-state drive.
• Do not touch the contact edge or circuit board of the M.2 solid-state drive. Otherwise the M.2 solid-state drive might get damaged.
• Do not make the M.2 solid-state drive subject to physical shocks or vibration. Put the M.2 solid-state drive on a soft material, such as cloth, to absorb physical shocks.

Your computer comes with two M.2-solid-state-drive slots in total. Slot a is under the keyboard, and slot b is under the service door. When you configure the M.2-solid-state-drive slot in the UEFI BIOS menu, ensure that you select the correct menu item.

• Slot a : NVMe1
• Slot b : NVMe2

M.2 2280 solid-state drive under the keyboard
For access, remove these FRUs in order:

• “1020 Keyboard” on page 65
• “1030 Service bracket” on page 67

Removal steps of the M.2 2280 solid-state drive under the keyboard

M.2 2280 solid-state drive with the bracket under the service door
For access, remove this FRU:

• “1010 Service door” on page 65

Removal steps of the M.2 2280 solid-state drive with the bracket under the service door

For computer models with the factory color calibration feature, if the operating system is reinstalled after the storage drive replacement, do the following to reinstall the color profiles:

1. Connect your computer to the network and open the preinstalled X-Rite Color Assistant app.
   Note: If the app is uninstalled, reinstall it by downloading the installation package from https://pcsupport.lenovo.com/us/en/downloads/DS540353

2. Go to Settings ➙ Restore profiles. The app will download and install its unique color profiles from Lenovo cloud automatically.

1070 Base cover assembly
For access, remove this FRU:

• “1010 Service door” on page 65

Removal steps of the base cover assembly
Applying labels to the base cover assembly
Notes:

• Depending on the country or region of delivery, the labels might be slightly different from the ones in the following illustration.
• The new base cover assembly FRU is shipped with a kit containing labels of several kinds. Apply those labels when you replace the base cover assembly. For the labels that are not shipped with the new base cover assembly, peel them from the old base cover assembly, and adhere them to the new one.

Item

1. IMEI label
2. Asset tag label
3. Country label
4. COA label
5. S/N label
6. Genuine Microsoft label

1080 Thermal fan assembly
For access, remove this FRU:

• “1070 Base cover assembly” on page 73

Removal steps of the thermal fan assembly (for models without discrete GPU) Removal steps of the thermal fan assembly (for models with discrete GPU) When installing:

• Ensure that the connectors are 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 parts marked a and b 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.
  For models with an integrated thermal pipe:

For models with discrete thermal pipes:

1090 Dummy GPU board cable (for models without discrete GPU)
For access, remove these FRUs in order:

• “1070 Base cover assembly” on page 73
• “1080 Thermal fan assembly” on page 74

Removal steps of the dummy GPU board cable
When installing: Ensure that the connectors are attached firmly.
1100 GPU board or dummy GPU board
For access, remove these FRUs in order:

• “1070 Base cover assembly” on page 73
• “1080 Thermal fan assembly” on page 74
• “1090 Dummy GPU board cable (for models without discrete GPU)” on page 76

Removal steps of the GPU board or dummy GPU board
Note: Depending on the model, your computer might look different from the illustration in this topic.

When installing: Ensure that the connector is attached firmly.
1110 I/O board and cable
For access, remove this FRU:

• “1070 Base cover assembly” on page 73

Removal steps of the I/O board and cable

When installing: Ensure that the connectors are attached firmly.
1120 Built-in battery
DANGER
Use only the authorized battery specified for the computer. Any other battery could ignite or explode.
Important notice for replacing a battery
Atten t ion: 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 Vantage app provides an automatic battery diagnostic test that determines if the built-in battery is defective. A built-in battery FRU should not be replaced unless this diagnostic test shows that the battery is defective. The only exception to this is if the built-in battery is physically damaged or a customer is reporting a possible safety issue.
If the Vantage app is not installed on the computer, the customer should download and install the program to diagnose the built-in battery, before getting a non-physically damaged built-in battery replaced. Note that the replacement of a physically damaged built-in battery is not covered by the warranty.
For access, remove this FRU:

• “1070 Base cover assembly” on page 73

Removal steps of the built-in battery

When installing:

• Ensure that the connector is attached firmly.
• Ensure that the base cover assembly is secured in place. Otherwise, the battery connection may fail.

1130 Coin-cell battery
DANGER
Use only the authorized battery specified for the computer. Any other battery could ignite or explode.
For access, remove these FRUs in order:

• “1070 Base cover assembly” on page 73
• “1120 Built-in battery” on page 78

Removal steps of the coin-cell battery

When installing:

• Ensure that the connector is attached firmly.
• Reset the system date and time in the BIOS menu.

1140 NFC board and cable (for selected models)
For access, remove these FRUs in order:

• “1070 Base cover assembly” on page 73
•  “1120 Built-in battery” on page 78

Removal steps of the NFC board and cable

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When installing: Ensure that the connectors are attached firmly.
1150 Keyboard bezel assembly
For access, remove these FRUs in order:

•  “1070 Base cover assembly” on page 73
• “1120 Built-in battery” on page 78

Removal steps of the keyboard bezel assembly
Note: Make sure the trackpad cable is disconnected.

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Note: Remove the keyboard bezel assembly carefully.

When installing: Ensure that the connectors and latches are attached firmly.
1160 Power button with fingerprint reader and bracket
For access, remove these FRUs in order:

• “1070 Base cover assembly” on page 73
• “1150 Keyboard bezel assembly” on page 81

Removal steps of the power button with fingerprint reader and bracket

When installing: Ensure that the connectors are attached firmly.
1170 Trackpad and trackpad cable
For access, remove these FRUs in order:

• “1070 Base cover assembly” on page 73
• “1150 Keyboard bezel assembly” on page 81

Removal steps of the trackpad and trackpad cable

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Step| Screw (quantity)| Color| Torque
---|---|---|---
3| M1.6 × L2.1 mm, flat-head, nylon-coated (7)| Black| 0.1 Nm (1.1 kgf-cm)

When installing: Ensure that the connector is attached firmly.
1180 Smart card reader and cable (for selected models)
For access, remove these FRUs in order:

• “1070 Base cover assembly” on page 73
• “1150 Keyboard bezel assembly” on page 81

Removal steps of the smart card reader and cable

Turn over the computer and disconnect the smart card cable.

When installing: Ensure that the connectors are attached firmly.
1190 Speaker
For access, remove these FRUs in order:

• “1070 Base cover assembly” on page 73
• “1150 Keyboard bezel assembly” on page 81

Removal steps of the speaker

When installing:

• Ensure that the connector is attached firmly.
• Ensure that the cable is routed properly.

1200 System board and beeper
Important notices for handling the system board:
When handling the system board, read the following:

• Some components mounted on a system board are very sensitive. Improper handling of a system board can cause damage to those components, and may cause a system malfunction.

• 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 6 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 surface.

• Avoid bending a system board and hard pushing to prevent cracking at each BGA (Ball Grid Array) chipset.

For access, remove these FRUs in order:

• “1010 Service door” on page 65
• “1020 Keyboard” on page 65
• “1030 Service bracket” on page 67
•  “1040 Wireless WAN card (for selected models)” on page 68
• “1050 Memory module” on page 69
• “1060 M.2 2280 solid-state drive” on page 71
• “1070 Base cover assembly” on page 73
•  “1080 Thermal fan assembly” on page 74
• “1090 Dummy GPU board cable (for models without discrete GPU)” on page 76
• “1100 GPU board or dummy GPU board” on page 76
• “1120 Built-in battery” on page 78

Removal steps of the system board

When installing:

• Ensure that the cable is attached firmly.

• The dc-in cable might come with a white mark a . When installing, ensure that the white mark is in the area b.

• Ensure that the parts marked c and d are installed as shown in the following illustration.

• Configure the keyboard language in UEFI BIOS:
  1. Enter the UEFI BIOS menu.
  2. Click Config ➙ Keyboard/Mouse ➙ Keyboard Layout, and then select the keyboard language.

1210 DC-in cable and bracket
For access, remove these FRUs in order:

• “1070 Base cover assembly” on page 73
• “1200 System board and beeper” on page 87

Removal steps of the DC-in cable and bracket

1220 Wireless WAN antenna assembly (for selected models)
For access, remove these FRUs in order:

•  “1070 Base cover assembly” on page 73
• “1200 System board and beeper” on page 87

Removal steps of the wireless WAN antenna assembly

When installing:

• Ensure that the cables are routed properly.
• Ensure that you connect the orange cable to the main connector, the blue cable to the auxiliary connector.
• Ensure that the connectors are attached firmly.

1230 Hinge caps
For access, remove these FRUs in order:

• “1070 Base cover assembly” on page 73
• “1150 Keyboard bezel assembly” on page 81

Removal steps of the hinge caps

1240 LCD unit
For access, remove these FRUs in order:

•  “1070 Base cover assembly” on page 73
•  “1230 Hinge caps” on page 92

Removal steps of the LCD unit

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When installing: Ensure that the connectors are attached firmly.
Attention: When you route the cables, ensure that they are not subject to any tension. Tension could cause the cables to be damaged by the cable guides, or a wire to be broken.
1250 Chassis assembly
For access, remove these FRUs in order:

• “1010 Service door” on page 65
• “1020 Keyboard” on page 65
• “1030 Service bracket” on page 67
• “1040 Wireless WAN card (for selected models)” on page 68
• “1050 Memory module” on page 69
• “1060 M.2 2280 solid-state drive” on page 71
• “1070 Base cover assembly” on page 73
• “1080 Thermal fan assembly” on page 74
• “1090 Dummy GPU board cable (for models without discrete GPU)” on page 76
•  “1100 GPU board or dummy GPU board” on page 76
• “1110 I/O board and cable” on page 77
•  “1120 Built-in battery” on page 78
• “1130 Coin-cell battery” on page 79
•  “1140 NFC board and cable (for selected models)” on page 80
•  “1150 Keyboard bezel assembly” on page 81
• “1180 Smart card reader and cable (for selected models)” on page 85
• “1190 Speaker” on page 86
•  “1200 System board and beeper” on page 87
• “1210 DC-in cable and bracket” on page 90
• “1220 Wireless WAN antenna assembly (for selected models)” on page 91
• “1230 Hinge caps” on page 92
• “1240 LCD unit” on page 93

2010 LCD strip cover (for touch models)
For access, remove this FRU:

• “1240 LCD unit” on page 93

Removal step of the LCD strip cover

When installing: Ensure that all the latches are attached firmly.
2020 LCD bezel (for non-touch models)
For access, remove this FRU:

• “1240 LCD unit” on page 93

Removal step of the LCD bezel

When installing: Ensure that all the latches are attached firmly.
2030 LCD panel and LCD cable
For access, remove these FRUs in order:

• “1240 LCD unit” on page 93
• “2010 LCD strip cover (for touch models)” on page 95
• “2020 LCD bezel (for non-touch models)” on page 96

Removal steps of the LCD panel and LCD cable

•  For touch models

•  For non-touch models
  Note: Do not pull the tapes too fast, otherwise, the tapes might snap.

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Installation steps of the LCD panel and elastic adhesive tapes (for non- touch models)

•  Peel off the release liners from one side of the new elastic adhesive tapes. Apply the tapes to the correct locations. Peel off the release liners from the other side of the tapes. Ensure that the tapes are applied correctly as shown.

• Attach the LCD cable to the LCD panel as shown. Turn over the LCD panel to secure the LCD panel with tapes.

Notes: For LCD panel with the factory color calibration feature, do the following to install new color profiles:

1. Connect your computer to a network and close the X-Rite Color Assistant program.
2. Go to C:\Program files (x86)\X-Rite Color Assistant and locate the Profile Updater For Display Replacement exe file.
3. Double-click the EXE file. Follow the on-screen instructions to input the display serial number and click Submit. You can find the display serial number and instructions on a sticker affixed to the front of the new LCD part. When the new color profiles are installed successfully, a prompted window will be displayed.

2040 LCD hinges
For access, remove these FRUs in order:

• “1240 LCD unit” on page 93
• “2010 LCD strip cover (for touch models)” on page 95
• “2020 LCD bezel (for non-touch models)” on page 96
• “2030 LCD panel and LCD cable” on page 96

Removal steps of the LCD hinges

2050 PMIC board (for touch models)
For access, remove these FRUs in order:

• “1240 LCD unit” on page 93
• “2010 LCD strip cover (for touch models)” on page 95
• “2030 LCD panel and LCD cable” on page 96

Removal step of the PMIC board

2060 Camera-and-microphone module and cable (for selected models)
For access, remove these FRUs in order:

• “1240 LCD unit” on page 93
• “2010 LCD strip cover (for touch models)” on page 95
• “2020 LCD bezel (for non-touch models)” on page 96
• “2030 LCD panel and LCD cable” on page 96

Removal steps of the camera-and-microphone module and cable
Note: Depending on the computer model, your computer might look different from the illustrations below.

2070 Wireless antenna assembly
For access, remove these FRUs in order:

• “1240 LCD unit” on page 93
• “2010 LCD strip cover (for touch models)” on page 95
• “2020 LCD bezel (for non-touch models)” on page 96
• “2030 LCD panel and LCD cable” on page 96

Removal steps of the wireless antenna assembly
Note: Depending on the computer model, your computer might look different from the illustration below.

Attention: When you route the cables, ensure that they are not subject to any tension. Tension could cause the cables to be damaged by the cable guides, or a wire to be broken.
Antenna locations

a Wireless LAN main antenna (gray)
b Wireless WAN MIMO 1 antenna (white and gray)
c Wireless WAN MIMO 2 antenna (black and gray)
d Wireless LAN auxiliary antenna (black)
e Wireless WAN auxiliary antenna (blue)
f Wireless WAN main antenna (orange)
* for selected models
2080 LCD cover assembly
For access, remove these FRUs in order:

• “1010 Service door” on page 65
• “1070 Base cover assembly” on page 73
•  “1120 Built-in battery” on page 78
• “1150 Keyboard bezel assembly” on page 81
• “1230 Hinge caps” on page 92
• “1240 LCD unit” on page 93
• “2010 LCD strip cover (for touch models)” on page 95
• “2020 LCD bezel (for non-touch models)” on page 96
• “2030 LCD panel and LCD cable” on page 96
• “2040 LCD hinges” on page 100
• “2050 PMIC board (for touch models)” on page 101
• “2060 Camera-and-microphone module and cable (for selected models)” on page 102
• “2070 Wireless antenna assembly” on page 103

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 user’s 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.
Trademarks
Lenovo, Lenovo logo, ThinkPad, ThinkPad logo, and TrackPoint are trademarks of Lenovo. Intel and Thunderbolt are trademarks of Intel Corporation or its subsidiaries in the U.S. and/or other countries.
Microsoft, Microsoft Teams, and Windows are trademarks of the Microsoft group of companies. 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. All other trademarks are the property of their respective owners.

Appendix B. Abbreviation table

The following table lists all abbreviations used in this manual.

© Copyright Lenovo 2023
Part Number: SP40T10712
Printed in China
(1P) P/N: SP40T10712

References

• X-Rite Color Assistant - ThinkPad - Lenovo Support US
• Lenovo Computer Parts | Genuine Replacement Parts | Lenovo Support US
• Official Lenovo Laptop, Accessories & PC Support - Lenovo Support US
• Official Lenovo Laptop, Accessories & PC Support - Lenovo Support US
• SupportPhoneList - Lenovo Support US
• Lenovo Support | Drivers, Troubleshooting, Warranty, Repair | Lenovo Support US
• Lenovo Digital Download Recovery Service (DDRS) - Download the files needed to create a Lenovo USB Recovery key - Lenovo Support US
• Lenovo Computer Parts | Genuine Replacement Parts | Lenovo Support US
• Parts Removal and Replacement Videos - PCs and Smart Devices - Lenovo Support US
• Lenovo Diagnostic Solutions: Overview - Lenovo Support US
• Downloads Detail ID - Lenovo Support US

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