Lenovo 16G7ARP ThinkBook 14 Gen Laptop User Manual

June 1, 2024
Lenovo

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Lenovo 16G7ARP ThinkBook 14 Gen Laptop

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Specifications

  • Model Name: Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7
  • Machine Type (MT): 21MV, 21MW, 21MR, 21MS

Product Information

The Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7 are designed for efficient hardware maintenance. This manual provides detailed service and reference information for various models of the ThinkBook series.

Safety Information

General Safety

  • Ensure safe standing to prevent slipping.
  • Distribute weight evenly between feet when lifting objects.
  • Use a slow and steady lifting force to avoid sudden movements.
  • Avoid lifting objects heavier than 16 kg (35 lb) alone.

Electrical Safety

Observe safety rules when working with electrical equipment.
Keep tools insulated and avoid contact with live circuits.

Safety Inspection Guide

Inspect for unsafe conditions before servicing. Check power off and cord disconnected before beginning any service task.

Product Usage Instructions

Chapter 1: Safety Information

Read and familiarize yourself with the safety guidelines provided in the manual to ensure safe handling of the device.

Chapter 2: General Checkout

Follow the instructions on what to do first and refer to the CRU list for maintenance tasks.

Chapter 3: Identifying FRUs (CRUs)

Locate and identify Field Replaceable Units (FRUs) and Customer Replaceable Units (CRUs) within the device for maintenance purposes.

Chapter 4: Removing a FRU or CRU

Use appropriate service tools and follow general guidelines for safely removing components. Handle thermal interface materials with care during maintenance procedures.

FAQs

  • Q: How often should I perform general checkouts on my ThinkBook?
    • A: It is recommended to perform general checkouts periodically to ensure optimal performance and longevity of your device.
  • Q: Can I replace components myself following the instructions in the manual?
    • A: While the manual provides detailed instructions, it is advisable to seek professional assistance if you are unsure about performing component replacements.

“`

Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7 Hardware Maintenance Manual

First Edition (February 2024) © Copyright Lenovo 2024.

ii Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

About this manual

This manual contains service and reference information for the following Lenovo products. Illustrations in this manual may look slightly different from your product model.

Model name ThinkBook 14 G7 ARP ThinkBook 16 G7 ARP ThinkBook 14 G7 IML ThinkBook 16 G7 IML

Machine type (MT) 21MV 21MW 21MR 21MS

Important:
· This manual is intended only for trained service technicians who are familiar with Lenovo products. · Before servicing a Lenovo product, be sure to read all the information under Chapter 1 “Safety
information” on page 1.

© Copyright Lenovo 2024

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iv Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

Chapter 1.

Safety information

This chapter presents the following safety information that you need to be familiar with before you service a Lenovo notebook computer.
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. Make sure 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, make sure 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. Make sure 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 non-conductive clip, about 8
centimeters (3 inches) from the end. · Do not wear jewelry, chains, metal- frame eyeglasses, or metal fasteners for your clothing.
Attention: 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. 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

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­ 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.
Attention: Another 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.
Attention: 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, non-grounded 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 when they are removed from their normal operating places in a machine: ­ Power supply units ­ Pumps ­ Blowers and fans ­ Motor generators ­ Similar units as 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-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 cathode ray tube (CRT) face or a bulging capacitor · Mechanical hazards, such as loose or missing hardware
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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. Power off the computer. Disconnect the power cord. 3. Check the power cord for: a. A third-wire ground connector is 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: http:// www.lenovo.com /serviceparts-lookup 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-Lenovo alterations. Use good judgment as to the safety of any 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. Make sure 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.
Chapter 1. Safety information 3

Grounding requirements
Electrical grounding of the computer is required for operator safety and correct system function. Proper grounding of the electrical outlet can be verified by a certified electrician.
Safety notices (multilingual translations)
The safety notices in this section are provided in the following languages: · English · Arabic · Brazilian Portuguese · French · German · Hebrew · Japanese · Korean · Spanish · Traditional Chinese
DANGER
DANGER
DANGER
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DANGER DANGER DANGER DANGER DANGER

Chapter 1. Safety information 5

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PERIGO PERIGO PERIGO

Chapter 1. Safety information 7

PERIGO
PERIGO PERIGO PERIGO PERIGO 8 Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

DANGER DANGER DANGER DANGER

Chapter 1. Safety information 9

DANGER DANGER DANGER DANGER VORSICHT 10 Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

VORSICHT VORSICHT VORSICHT VORSICHT

Chapter 1. Safety information 11

VORSICHT VORSICHT VORSICHT
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Chapter 1. Safety information 13

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Chapter 1. Safety information 15

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Chapter 1. Safety information 17

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Chapter 1. Safety information 19

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Chapter 2.

General checkout

This chapter contains the following topics:
Before you go to the checkout instructions, ensure that you 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. · Be extremely careful during such writing 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, make sure that the model of the machine and the FRU part number are correct by referring to the FRU parts list. · 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, electrostatic discharge, or software errors. Consider replacing a FRU only when a problem recurs. If you suspect that a FRU is defective, clear the error log and run the test again. If the error does not recur, do not replace the FRU. · Be careful not to replace a nondefective FRU.
What to do first
When you return a FRU, you must include the following information in the parts exchange form or parts return form that you attach to it:
1. Name and phone number of service technician 2. Date of service 3. Date on which the machine failed 4. Date of purchase 5. Failure symptoms, error codes appearing on the display, and beep symptoms 6. Procedure index and page number in which the failing FRU was detected 7. Failing FRU name and part number 8. Machine type, model number, and serial number 9. Customer’s name and address
Note: During the warranty period, the customer may be responsible for repair costs if the computer damage was caused by misuse, accident, modification, unsuitable physical or operating environment, or improper maintenance by the customer. Following is a list of some common items that are not covered under warranty and some symptoms that might indicate that the system was subjected to stress beyond normal use.
Before checking problems with the computer, determine whether the damage is covered under the warranty by referring to the following list:
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

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· Damage caused by the improper insertion of a personal-computer card (PC card) or the installation of an incompatible card
· Improper disc insertion or use of an external optical drive · Fuses blown by attachment of a non-supported 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 non-warranted activities: · Missing parts might be a symptom of unauthorized service or modification. · Check for obvious damage to a hard disk drive. If the spindle of a hard disk drive becomes noisy, the hard
disk drive might have been dropped or subject to excessive force.

CRU list
CRU ac power adapter Power cord Lower case Memory module 2242 solid-state drive 2280 solid-state drive 2242 solid-state drive bracket*

Type self-service self-service optional-service optional-service optional- service optional-service optional-service

  • For selected models

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Chapter 3.

Identifying FRUs (CRUs)

Locate FRUs and CRUs
The exploded illustrations help Lenovo service technicians identify FRUs or CRUs that they may need to replace when servicing a customer’s computer.

Figure 1. Lenovo ThinkBook 14 Gen 7 exploded view

Table 1. FRU (CRU) categories

No.

FRU (CRU) category

1

LCD module

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Table 1. FRU (CRU) categories (continued)

2

Power button (without fingerprint reader)*

3

Fingerprint reader*

4

Fingerprint reader cable*

5

I/O bracket

6

I/O board cable

7

I/O board

8

Wi-Fi card

9

Memory module mylar

10

Memory module

11

2242 solid-state drive*

12

2280 solid-state drive*

13

2242 solid-state drive bracket*

14

Solid-state drive thermal pad*

15

Lower case

16

Battery pack

17

Battery pack protective sponge

18

Coin-cell battery

19

Speakers

20

Fan

21

Heat sink

22

System board

23

Touchpad board cable

24

Upper case (with keyboard)

a

Power cord

b

ac power adapter

c

Screw kit

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Figure 2. Lenovo ThinkBook 16 Gen 7 exploded view

Table 2. FRU (CRU) categories

No.

FRU (CRU) category

1

LCD module

2

Power button (without fingerprint reader)*

3

Fingerprint reader*

4

Fingerprint reader cable*

5

I/O bracket

6

I/O board cable

7

I/O board

8

System board

9

Wi-Fi card

10

Memory module mylar

Chapter 3. Identifying FRUs (CRUs) 25

Table 2. FRU (CRU) categories (continued)

11

Memory module

12

2242 solid-state drive*

13

2280 solid-state drive*

14

2242 solid-state drive bracket*

15

Solid-state drive thermal pad*

16

Lower case

17

Battery pack

18

Battery pack protective sponge

19

Coin-cell battery

20

Speakers

21

Fan

22

Heat sink

23

Touchpad board cable

24

Upper case (with keyboard)

a

Power cord

b

ac power adapter

c

Screw kit

  • For selected models

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Figure 3. LCD exploded view

Table 3. FRU (CRU) categories

No.

FRU (CRU) category

1

LCD bezel

2

Microphone rubbers

3

Camera module

4

Touch board cable*

5

Antennas

6

Adhesive tapes

7

LCD panel

8

Upper case

9

EDP cable

10

Hinges

11

Hinge cover

  • For selected models

Chapter 3. Identifying FRUs (CRUs) 27

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Chapter 4.

Removing a FRU or CRU

Service tools
The following table lists tools for servicing Lenovo computers. Tools with a cross mark are needed for serving the product models as described by this publication. Prepare them before you service the product.

Table 4. Service tools Service tool and consumable Screw driver (Phillips head) (PH1/PH0) Screw driver (Torx head) (T5) Screw driver (Torx head) (T30) Pry tool 1 Tweezers (conductive) Tweezers (isolated) Suction cup Hexagonal socket Thermal interface materials Acetate tape Polyamide tape Mylar tape Electrical tape Double-sided tape Conductive tape Eraser Heat gun Brown brush

Model applicability X
X X
X X

Notes: · T30 screw drivers are used to service the new Intel Xeon CPUs. · Hexagonal sockets are used to remove antenna connectors.

General guidelines
When removing or replacing a FRU, ensure that you 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. 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 procedure. Remove them in the order in which they are listed.

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3. Follow the correct sequence in the steps for removing a FRU, as shown in the illustrations by the numbers in square callouts.
4. When removing a FRU, move it in the direction as shown by the arrow in the illustration.
5. To install a new FRU in place, perform the removal procedure in reverse and follow any notes that pertain to replacement.
6. When replacing a FRU, carefully retain and reuse all screws.
7. When replacing the base cover, reapply all labels that come with the replacement base cover. If some original labels are not included with the replacement base cover, peel them off from the original base cover and paste them on the replacement base cover.

DANGER
Before removing any FRU or CRU, shut down the computer and unplug all power cords from electrical outlets.
Attention: After replacing a FRU, do not turn on the computer until you have ensured 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.
Attention: 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 (P/N 6405959).

Handling thermal interface materials
Thermal interface materials are typically applied between a heat sink and a CPU (and/or GPU) die to enhance the heat transfer capability of the heat sink. If thermal interface materials are exposed during computer servicing, such as when replacing the heat sink or system board, it is important to handle the thermal interface materials properly.
· You need to completely remove the old thermal interface materials from the CPU and/or GPU die.
· You need to apply new thermal interface materials onto the heat sink according to the type, quantity, and application areas specified in this publication.
Related tasks “Remove the heat sink” on page 41 “Remove the system board and I/O board cable” on page 52

Type, quantity, and area of thermal interface materials application on the heat sink
The table and figure below provide information on the type and quantity of thermal interface materials, as well as the specific area on the heat sink where these materials should be applied.

Area a

Type X-23-8160

Quantity 0.18 g, 12.82 mm × 16.25 mm × 0.2 mm (for ARP models) 0.22 g, 11.24 mm × 22.89 mm × 0.2 mm (for IML models)

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Figure 4. Area on the heat sink where thermal interface materials should be applied
Area on the system board where thermal interface materials are applied
The following figure shows the area on the system board where thermal interface materials are applied.
Figure 5. Area on the system board where thermal interface materials are applied
Remove the lower case
Make sure the computer has been shut down before servicing the computer. Step

  1. Place the computer upside down on a flat surface. Step 2. Loosen five screws and remove four screws. Then, pry up the latches and remove the lower case.
    Chapter 4. Removing a FRU or CRU 31

Figure 6. Loosen five screws, remove four screws and the lower case

Screw specifications M2 × L4

Number of screws 4

Torque force (kgf.cm) 1.85 ± 0.15

Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
Lower case

Remove the battery pack
Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 31
Step 1. Disconnect the cable from the system board. Then, remove five screws and then remove the battery pack.
Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

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Note: The actual battery pack may look different from the photo. Figure 7. Remove the battery pack

Screw specifications M2 × L4

Number of screws 5

Torque force (kgf.cm) 1.85 ± 0.15

Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
Battery pack

Remove the battery protective sponge
Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 31 “Remove the battery pack” on page 32
Step 1. Remove the battery protective sponge. Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Chapter 4. Removing a FRU or CRU 33

Figure 8. Remove the battery protective sponge Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
Battery protective sponge
Remove the Wi-Fi card
Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 31
Step 1. Disconnect the battery pack cable from the system board. Then, disconnect the Wi-Fi card antennas, remove one screw and remove the Wi-Fi card. Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.
Figure 9. Remove the Wi-Fi card 34 Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

Screw specifications

Number of screws

M2 × L2 (ThinkBook 14 Gen 7) 1

M2 × L3 (ThinkBook 16 Gen 7) 1

Torque force (kgf.cm) 1.85 ± 0.15 1.85 ± 0.15

Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
Wi-Fi card

Remove the I/O bracket
Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 31
Step 1. Disconnect the battery pack cable from the system board. Remove three screws and open the right hinge. Then, remove two screws and remove the I/O bracket.
Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Figure 10. Remove the I/O bracket

Screw specifications
M2 × L4 M2.5 × L6 (ThinkBook 14 Gen 7)
M2.5 × L6.5 (ThinkBook 16 Gen 7)

Number of screws 3 2
2

Torque force (kgf.cm) 1.85 ± 0.15 3.0 ± 0.15
3.0 ± 0.15

Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts:
I/O bracket

Chapter 4. Removing a FRU or CRU 35

Remove the 2242 solid-state drive and bracket (for selected models)
Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 31
Step 1. Disconnect the battery pack cable from the system board. Then, remove two screws and remove the 2242 solid-state drives by pulling them away from the slots.
Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Figure 11. Remove the 2242 solid-state drives

Screw specifications

Number of screws

M2 × L2 (ThinkBook 14 Gen 7) 2

M2 × L3 (ThinkBook 16 Gen 7) 2

Step 2. Remove the 2242 solid-state drive thermal pad.

Torque force (kgf.cm) 1.85 ± 0.15 1.85 ± 0.15

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Figure 12. Remove the 2242 solid-state drive thermal pad Step 3. Remove one screw and remove the 2242 solid-state drive bracket.

Figure 13. Remove the 2242 solid-state drive bracket

Screw specifications M2 × L3

Number of screws 1

Torque force (kgf.cm) 1.85 ± 0.15

Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
2242 solid-state drive 2242 solid-state drive bracket 2242 solid-state drive thermal pad

Chapter 4. Removing a FRU or CRU 37

Remove the 2280 solid-state drive (for selected models)
Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 31
Step 1. Disconnect the battery pack cable from the system board. Then, remove two screws and remove the 2280 solid-state drives by pulling them away from the slots.
Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Figure 14. Remove the 2280 solid-state drives

Screw specifications

Number of screws

M2 × L2 (ThinkBook 14 Gen 7) 2

M2 × L3 (ThinkBook 16 Gen 7) 2

Step 2. Remove the 2280 solid-state drive thermal pad.

Torque force (kgf.cm) 1.85 ± 0.15 1.85 ± 0.15

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Figure 15. Remove the 2280 solid-state drive thermal pad Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
2280 solid-state drive 2280 solid-state drive thermal pad
Remove the fan (ThinkBook 14 Gen 7)
Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 31
Step 1. Disconnect the battery pack cable from the system board. Then, disconnect the fan cable from the system board, remove three screws and remove the fan. Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.
Chapter 4. Removing a FRU or CRU 39

Figure 16. Remove three screws and the fan

Screw specifications M2 × L4

Number of screws 3

Torque force (kgf.cm) 1.85 ± 0.15

Note: For touch screen models, release the touch board cable from the fan first.
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts:
Fan

Remove the fan (ThinkBook 16 Gen 7)
Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 31
Step 1. Disconnect the battery pack cable from the system board. Then, disconnect the fan cable from the system board, remove three screws and remove the fan.
Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

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Figure 17. Remove three screws and the fan

Note: For touch screen models, release the touch board cable from the fan first.

Screw specifications

Number of screws

Torque force (kgf.cm)

M2 × L4

3

1.85 ± 0.15

Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts:
Fan

Remove the heat sink
Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 31
Step 1. Disconnect the battery pack cable from the system board. Then, remove three screws in the alphabetical order. Then, remove the heat sink.
Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Chapter 4. Removing a FRU or CRU 41

Figure 18. Remove three screws and remove the heat sink Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
Heat sink
Remove the coin-cell battery
Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 31
Step 1. Disconnect the battery pack cable from the system board. Then, remove the coin-cell battery. Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.
Figure 19. Remove the coin-cell battery
42 Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts:
Coin-cell battery
Remove the memory module
Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 31
Step 1. Disconnect the battery pack cable from the system board. Then, peel off the memory module mylar. Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.
Figure 20. Peel off the memory module mylar Step 2. Open the latches and remove the memory module.
Chapter 4. Removing a FRU or CRU 43

Figure 21. Remove the memory module Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
Memory module
Remove the speakers
Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 31
Step 1. Disconnect the battery pack cable and the speaker cable from the system board. Then, carefully remove the speakers. Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.
Figure 22. Disconnect cables and remove the speaker 44 Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts:
Speakers
Remove the touchpad board cable
Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 31 “Remove the battery pack” on page 32 “Remove the battery protective sponge” on page 33
Step 1. Lift the touchpad board cable and I/O board cable.
Figure 23. Lift the cables Step 2. Disconnect the touchpad board cable from the system board and the touchpad. Then, carefully
remove the cable.
Chapter 4. Removing a FRU or CRU 45

Figure 24. Disconnect and remove the touchpad board cable. Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts:
Touchpad board cable
Remove the I/O board (ThinkBook 14 Gen 7)
Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 31 “Remove the fan (ThinkBook 14 Gen 7)” on page 39 “Remove the heat sink” on page 41 “Remove the coin-cell battery” on page 42
Step 1. Pull out the antenna cables. Then, remove three screws and open the left hinge.
46 Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

Figure 25. Remove three screws and open the hinge

Screw specifications M2.5 × L6

Number of screws 3

Torque force (kgf.cm) 3.0 ± 0.15

Step 2. Disconnect the I/O board cable and fingerprint reader cable (if any).

Figure 26. Disconnect the cable(s) Step 3. Remove three screws and remove the I/O board.
Chapter 4. Removing a FRU or CRU 47

Figure 27. Remove three screws and remove the I/O board with cable

Screw specifications M2 × L4

Number of screws 3

Torque force (kgf.cm) 1.85 ± 0.15

Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
I/O board

Remove the I/O board (ThinkBook 16 Gen 7)
Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 31 “Remove the coin-cell battery” on page 42
Step 1. Disconnect the I/O board cable and fingerprint reader cable (if any). Then, remove three screws and open the left hinge.

48 Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

Figure 28. Disconnect the cable(s) and open the hinge

Screw specifications M2.5 × L6.5

Number of screws 3

Step 2. Remove three screws and the I/O board.

Torque force (kgf.cm) 3.0 ± 0.15

Figure 29. Remove three screws and the I/O board

Screw specifications M2 × L4

Number of screws 3

Torque force (kgf.cm) 1.85 ± 0.15

Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
I/O board

Chapter 4. Removing a FRU or CRU 49

Remove the fingerprint reader module (for selected models)
Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 31 “Remove the I/O board (ThinkBook 14 Gen 7)” on page 46 “Remove the I/O board (ThinkBook 16 Gen 7)” on page 48
Step 1. Remove the acetate tapes.
Figure 30. Remove the acetate tapes Step 2. Remove the fingerprint reader module.
Figure 31. Remove the fingerprint reader module Step 3. Disconnect the fingerprint reader cable. 50 Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

Figure 32. Disconnect the fingerprint reader cable
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts:
Fingerprint reader module
Remove the power button (for selected models)
Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 31 “Remove the I/O board (ThinkBook 14 Gen 7)” on page 46 “Remove the I/O board (ThinkBook 16 Gen 7)” on page 48
Step 1. Remove the power button.

Figure 33. Remove the power button

Chapter 4. Removing a FRU or CRU 51

Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts:
Power button
Remove the system board and I/O board cable
Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 31 “Remove the battery pack” on page 32 “Remove the battery protective sponge” on page 33 “Remove the 2242 solid-state drive and bracket (for selected models)” on page 36 “Remove the 2280 solid-state drive (for selected models)” on page 38 “Remove the Wi-Fi card” on page 34 “Remove the I/O bracket” on page 35 “Remove the fan (ThinkBook 14 Gen 7)” on page 39 “Remove the fan (ThinkBook 16 Gen 7)” on page 40 “Remove the heat sink” on page 41 “Remove the memory module” on page 43
Step 1. Disconnect cables connected to the system board.
Figure 34. Disconnect cables Note: For touch screen models, disconnect the touch board cable from the system board. Step 2. Remove one screw and remove the system board.
52 Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

Figure 35. Remove one screw and remove the system board

Screw specifications M2 × L4

Number of screws 1

Step 3. Disconnect the I/O board cable from the system board.

Torque force (kgf.cm) 1.85 ± 0.15

Figure 36. Disconnect the I/O board cable from the system board Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
System board I/O board cable
Chapter 4. Removing a FRU or CRU 53

Use a Golden Key U1 tool to flash-write key id information
After replacing the system board and re-assembling the computer, use a pre- made Golden Key U1 tool to start the computer and flash-write the serial number (SN), machine type (MT), product name (PN), and UUID to the new system board.
The Golden Key U1 tool is prepared by running the U1 Update software on a FAT32-formatted USB thumb drive. Go to http://support.lenovo.com/us/en/solutions/HT506954 for detailed instructions on how to create and use a Golden Key U1 tool.
Remove the LCD module (for non-touch screen models)
Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 31 “Remove the heat sink” on page 41
Step 1. Disconnect EDP cable and antenna cables from the system board. Then, remove six screws.

Figure 37. Disconnect EDP cable from the system board. Remove six screws

Screw specifications (ThinkBook 14 Gen 7)
M2.5 × L6 M2 × L4

Number of screws
5 1

Torque force (kgf.cm)
3.0 ± 0.15 1.85 ± 0.15

Screw specifications (ThinkBook 16 Gen 7)

Number of screws

Torque force (kgf.cm)

M2.5 × L6.5

5

M2 × L4

1

3.0 ± 0.15 1.85 ± 0.15

Step 2. Rotate the LCD module to an angle of more than 90 degrees and remove the LCD module.

54 Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

Figure 38. Rotate and remove LCD module Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
LCD module
Remove the LCD module (for touch screen models)
Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 31 “Remove the battery pack” on page 32 “Remove the heat sink” on page 41
Step 1. Disconnect EDP cable, touch board cable and antenna cable from the system board. Then, remove six screws.
Chapter 4. Removing a FRU or CRU 55

Figure 39. Disconnect cables and remove six screws

Screw specifications (ThinkBook 14 Gen 7)
M2.5 × L6 M2 × L4

Number of screws
5 1

Torque force (kgf.cm)
3.0 ± 0.15 1.85 ± 0.15

Screw specifications (ThinkBook 16 Gen 7)

Number of screws

Torque force (kgf.cm)

M2.5 × L6.5

5

M2 × L4

1

3.0 ± 0.15 1.85 ± 0.15

Step 2. Rotate the LCD module to an angle of more than 90 degrees and remove the LCD module.

Figure 40. Rotate and remove LCD module 56 Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
LCD module
Remove the upper case (with keyboard)
Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 31 “Remove the battery pack” on page 32 “Remove the battery protective sponge” on page 33 “Remove the Wi-Fi card” on page 34 “Remove the I/O bracket” on page 35 “Remove the 2242 solid-state drive and bracket (for selected models)” on page 36 “Remove the 2280 solid-state drive (for selected models)” on page 38 “Remove the fan (ThinkBook 14 Gen 7)” on page 39 “Remove the fan (ThinkBook 16 Gen 7)” on page 40 “Remove the heat sink” on page 41 “Remove the memory module” on page 43 “Remove the speakers” on page 44 “Remove the touchpad board cable” on page 45 “Remove the I/O board (ThinkBook 14 Gen 7)” on page 46 “Remove the I/O board (ThinkBook 16 Gen 7)” on page 48 “Remove the fingerprint reader module (for selected models)” on page 50 “Remove the power button (for selected models)” on page 51 “Remove the system board and I/O board cable” on page 52 “Remove the LCD module (for non-touch screen models)” on page 54 “Remove the LCD module (for touch screen models)” on page 55
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
Upper case (with keyboard)
Remove the hinge cover
Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 31 “Remove the upper case (with keyboard)” on page 57
Step 1. Remove the hinge cover.
Chapter 4. Removing a FRU or CRU 57

Figure 41. Remove the hinge cover Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
Hinge cover
Remove the LCD bezel
Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 31 “Remove the upper case (with keyboard)” on page 57 “Remove the hinge cover” on page 57
Step 1. Remove three screws and remove the LCD bezel.
Figure 42. Remove three screws and remove the LCD bezel 58 Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

Screw specifications M2 × L4

Number of screws 3

Torque force (kgf.cm) 1.85 ± 0.15

Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
LCD bezel

Remove the hinges
Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 31 “Remove the upper case (with keyboard)” on page 57 “Remove the hinge cover” on page 57 “Remove the LCD bezel” on page 58
Step 1. Remove six screws and remove the hinges.

Figure 43. Remove six screws and remove the hinges

Screw specifications M2 × L2

Number of screws 6

Torque force (kgf.cm) 1.85 ± 0.15

Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
Hinges

Remove the LCD panel (for non-touch screen models)
Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 31

Chapter 4. Removing a FRU or CRU 59

“Remove the upper case (with keyboard)” on page 57 “Remove the hinge cover” on page 57 “Remove the LCD bezel” on page 58 “Remove the hinges” on page 59 Step

  1. Pull out the adhesive tapes and lift up the LCD panel.
    Figure 44. Pull out the adhesive tapes lift up the LCD panel Step 2. Peel back the mylar tape and disconnect the EDP cable. Then, remove the LCD panel.
    Figure 45. Peel back the camera board cable and EDP cables. Then, remove the LCD panel Notes: 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: 60 Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

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.
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
Adhesive tapes LCD panel
Remove the LCD panel (for touch screen models)
Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 31 “Remove the upper case (with keyboard)” on page 57 “Remove the hinge cover” on page 57 “Remove the LCD bezel” on page 58 “Remove the hinges” on page 59
Step 1. Disconnect and remove the touch board cable from the touch board. Then, disconnect the LCD panel cable from the touch board and lift the LCD panel.
Figure 46. Disconnect the touch board and LCD panel cable Step 2. Peel back the mylar tape and disconnect the EDP cable. Then, remove the LCD panel.
Chapter 4. Removing a FRU or CRU 61

Figure 47. Peel back the camera board cable and EDP cables. Then, remove the LCD panel
Notes: 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.
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
Adhesive tapes LCD panel Touch board cable
Remove the microphone rubbers
Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 31 “Remove the upper case (with keyboard)” on page 57 “Remove the hinge cover” on page 57 “Remove the LCD bezel” on page 58 “Remove the hinges” on page 59 “Remove the LCD panel (for non-touch screen models)” on page 59 “Remove the LCD panel (for touch screen models)” on page 61
Step 1. Remove the microphone rubbers.
62 Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

Figure 48. Remove the microphone rubbers Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
Microphone rubber
Remove the camera board
Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 31 “Remove the upper case (with keyboard)” on page 57 “Remove the hinge cover” on page 57 “Remove the LCD bezel” on page 58 “Remove the hinges” on page 59 “Remove the LCD panel (for non-touch screen models)” on page 59 “Remove the LCD panel (for touch screen models)” on page 61 “Remove the microphone rubbers” on page 62
Step 1. Remove the camera board sponge.
Chapter 4. Removing a FRU or CRU 63

Figure 49. Remove the camera board sponge Note: Sponge is for models equipped with infrared camera. Step 2. Disconnect the camera board cable.
Figure 50. Disconnect the camera board cable Step 3. Remove the camera board.
64 Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

Figure 51. Remove the camera board Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
Camera board
Remove the antennas
Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 31 “Remove the upper case (with keyboard)” on page 57 “Remove the hinge cover” on page 57 “Remove the LCD bezel” on page 58 “Remove the hinges” on page 59 “Remove the LCD panel (for non-touch screen models)” on page 59 “Remove the LCD panel (for touch screen models)” on page 61
Step 1. Remove the antennas.
Chapter 4. Removing a FRU or CRU 65

Figure 52. Remove the antennas Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part:
Antenna
66 Lenovo ThinkBook 14 Gen 7 and Lenovo ThinkBook 16 Gen 7Hardware Maintenance Manual

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