About this manual
Chapter 1. Safety information
Chapter 2. General checkout
- What to do first
- CRU list
Chapter 3. Idetifying FRUs (CRUs)
- Locate FRUs and CRUs
Chapter 4. Removing a FRU or CRU
Trademarks

Lenovo 3 User Manual

Displayed below is the user manual for 3 by Lenovo which is a product in the Notebooks category. This manual has pages.

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IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad

Slim 3i series

Hardware Maintenance Manual

First Edition (May 2021)

Contents

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

Chapter 1. Safety information . . . . . . 1

General safety . . . . . . . . . . . . . . . . 1

Electrical safety . . . . . . . . . . . . . . . . 1

Safety inspection guide . . . . . . . . . . . . . 2

Handling devices that are sensitive to electrostatic

discharge . . . . . . . . . . . . . . . . . . 3

Grounding requirements . . . . . . . . . . . . 4

Safety notices (multilingual translations) . . . . . . 4

Chapter 2. General checkout . . . . . 21

What to do first . . . . . . . . . . . . . . . 21

CRU list . . . . . . . . . . . . . . . . . . 22

Chapter 3. Idetifying FRUs (CRUs) . . 23

Locate FRUs and CRUs . . . . . . . . . . . 23

Chapter 4. Removing a FRU or

CRU . . . . . . . . . . . . . . . . . . 31

Service tools . . . . . . . . . . . . . . . . 31

General guidelines. . . . . . . . . . . . . . 31

Remove the lower case . . . . . . . . . . . . 32

For 14–inch models . . . . . . . . . . . 32

For 15–inch and 17–inch models . . . . . . 33

Remove the memory module . . . . . . . . . 33

Remove the memory module shielding . . . . . . 34

Remove the storage drive . . . . . . . . . . . 35

Remove the storage drive bracket . . . . . . . 37

Remove the battery pack . . . . . . . . . . . 38

Remove the battery pack (with storage

drive) . . . . . . . . . . . . . . . . . 38

Remove the battery pack (no storage drive) . . 39

Remove the solid-state drive. . . . . . . . . . 41

Remove the solid-state drive thermal pad. . . . . 42

Remove the heatsink . . . . . . . . . . . . . 43

For ALC models . . . . . . . . . . . . . 43

For ITL models . . . . . . . . . . . . . 44

Remove the system fan. . . . . . . . . . . . 46

For 14–inch and 15–inch models . . . . . . 46

For 17–inch models . . . . . . . . . . . 48

Remove the Wi-Fi card . . . . . . . . . . . . 49

Remove the USB board. . . . . . . . . . . . 50

For 14–inch models . . . . . . . . . . . 50

For 15–inch models . . . . . . . . . . . 51

For 17–inch models . . . . . . . . . . . 53

Remove the USB board cable . . . . . . . . . 54

Remove the coin-cell battery. . . . . . . . . . 55

Remove the fingerprint reader . . . . . . . . . 56

Remove the system board. . . . . . . . . . . 58

For the 14–inch models . . . . . . . . . . 58

For 15–inch models . . . . . . . . . . . 59

For the 17–inch models . . . . . . . . . . 61

Use a Golden Key U1 tool to flash-write key id

information . . . . . . . . . . . . . . . 64

Remove the upper case . . . . . . . . . . . 64

Remove the LCD bezel . . . . . . . . . . . . 66

Remove the stripe cover . . . . . . . . . . . 66

Remove the hinge . . . . . . . . . . . . . . 67

For 14–inch models . . . . . . . . . . . 67

For the 15–inch models . . . . . . . . . . 68

Remove the LCD panel (for 14–inch and 15–inch

models) . . . . . . . . . . . . . . . . . . 70

Remove the LCD assembly (for 17–inch models) . . 71

Remove the microphone rubber . . . . . . . . 73

Remove the camera . . . . . . . . . . . . . 73

Remove the EDP cable . . . . . . . . . . . . 74

Trademarks . . . . . . . . . . . . . . . . lxxvii

ii IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

About this manual

This manual contains service and reference information for the following Lenovo products.

Machine Machine type (MT)

IdeaPad 3 14ADA6 82KQ

IdeaPad 3 14ALC6 82KT

IdeaPad 3 14ITL6 82H7

IdeaPad 3 15ADA6 82KR

IdeaPad 3 15ALC6 82KU

IdeaPad 3 15ITL6 82H8

IdeaPad 3 17ADA6 82KS

IdeaPad 3 17ALC6 82KV

IdeaPad 3 17ITL6 82H9

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.

iv IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware 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

– 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

2IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

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 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

4IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

DANGER

Chapter 1.Safety information 5

6IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

PERIGO

Chapter 1.Safety information 7

PERIGO

8IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

DANGER

Chapter 1.Safety information 9

DANGER

VORSICHT

10 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

VORSICHT

Chapter 1.Safety information 11

VORSICHT

12 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Chapter 1.Safety information 13

14 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Chapter 1.Safety information 15

16 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Chapter 1.Safety information 17

18 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Chapter 1.Safety information 19

20 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

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 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, 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

• 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

Table 1. Model: IdeaPad 3 14ADA6, IdeaPad 3 14ALC6, IdeaPad 3 14ITL6 (Machine type: 82KQ, 82KT, 82H7)

CRU Type

ac power adapter self-service

power cord self-service

Table 2. Model: IdeaPad 3 15ADA6, IdeaPad 3 15ALC6, IdeaPad 3 15ITL6 (Machine type: 82KR, 82KU, 82H8)

CRU Type

ac power adapter self-service

power cord self-service

Table 3. Model: IdeaPad 3 17ADA6, IdeaPad 3 17ALC6, IdeaPad 3 17ITL6 (Machine type: 82KS, 82KV, 82H9)

CRU Type

ac power adapter self-service

power cord self-service

22 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Chapter 3. Idetifying 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. IdeaPad 3 14ADA6/IdeaPad 3 14ALC6/IdeaPad 3 14ITL6 exploded view

Table 4. FRU (CRU) categories

No. FRU (CRU) category

1Upper case assembly

2Fingerprint reader

3Fingerprint reader cable

4USB board

Table 4. FRU (CRU) categories (continued)

5USB board cable

6Storage drive

7Storage drive cable

8Storage drive bracket

9Heat sink

10 Fan

11 Battery pack

12 Lower case

13 Touchpad cable

14 Coin-cell battery

15 Solid-state drive bracket

16 Solid-state drive

17 Solid-state drive thermal pad

18 Wi-Fi card

19 Memory module shielding

20 Memory module

21 System board

22 ac power adapter

23 Power cord

24 Screw kit

24 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Figure 2. IdeaPad 3 15ADA6/IdeaPad 3 15ALC6/IdeaPad 3 15ITL6 exploded view

Table 5. FRU (CRU) categories

No. FRU (CRU) category

1Upper case assembly

2Fingerprint reader

3Fingerprint reader cable

4USB board

5USB board cable

6Storage drive cable

7Storage drive

8Storage drive bracket

9Heat sink

10 Fan

Chapter 3.Idetifying FRUs (CRUs) 25

Table 5. FRU (CRU) categories (continued)

11 Battery pack

12 Lower case

13 Touchpad cable

14 Coin-cell battery

15 Solid-state drive bracket

16 Solid-state drive

17 Solid-state drive thermal pad

18 Wi-Fi card

19 Memory module shielding

20 Memory module

21 System board

22 ac power adapter

23 Power cord

24 Screw kit

26 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Figure 3. IdeaPad 3 17ADA6/IdeaPad 3 17ALC6/IdeaPad 3 17ITL6 exploded view

Table 6. FRU (CRU) categories

No. FRU (CRU) category

1Upper case assembly

2Fingerprint reader

3Fingerprint reader cable

4USB board

5USB board cable

6Storage drive cable

7Storage drive

8Storage drive bracket

9Heat sink

10 Fan

Chapter 3.Idetifying FRUs (CRUs) 27

Table 6. FRU (CRU) categories (continued)

11 Battery pack

12 Lower case

13 Touchpad cable

14 Coin-cell battery

15 Solid-state drive bracket

16 Solid-state drive

17 Solid-state drive thermal pad

18 Wi-Fi card

19 Memory module shielding

20 Memory module

21 System board

22 ac power adapter

23 Power cord

24 Screw kit

28 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Figure 4. LCD exploded view (for 14–inch and 15–inch models)

Table 7. FRU (CRU) categories (for 14–inch and 15–inch models)

No. FRU (CRU) category

1LCD bezel

2LCD panel

3Hinges

4Microphone rubbers

5Camera

6EDP cable

7LCD cover

8Hinge caps

9Removable tapes

Chapter 3.Idetifying FRUs (CRUs) 29

Figure 5. LCD exploded view (for 17–inch models)

Table 8. FRU (CRU) categories (for 17–inch models)

No. FRU (CRU) category

1LCD bezel

2LCD assembly

3Microphone rubbers

4Camera

5EDP cable

6LCD cover

7Hinge caps

30 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

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 9. Service tools

Service tool and consumable Model applicability

Screw driver (Phillips head) (PH1/PH01) X

Screw driver (Torx head) (T5)

Screw driver (Torx head) (T30)

Pry tool 1 X

Tweezers (conductive) X

Tweezers (isolated)

Suction cup

Hexagonal socket

Silicone grease

Acetate tape X

Polyamide tape

Mylar tape

Electrical tape

Double-sided tape

Conductive tape

Eraser

Heat gun

Brown brush

Notes:

• T30 screw drivers are used to service the new Intel Xeon CPUs.

• Hexagonal sockets are used to remove antenna connectors.

• Silicone grease is applied to the CPU and heatsink surfaces to eliminate air gaps.

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.

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, peal 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).

Remove the lower case

For 14–inch models

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. Remove nine screws and then remove the lower case.

Figure 6. Remove nine screws

32 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Screw specifications (14–inch models) Number of screws

M2 x L6 9

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

replacement part:

Lower case

For 15–inch and 17–inch models

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. Remove 10 screws and then remove the lower case.

Figure 7. Remove 11 screws

Screw specifications (15–inch models) Number of screws

M2 x 2.5 10

Screw specifications (17–inch models) Number of screws

M2 x L6 6

M2 x L4 4

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

replacement part:

Lower case

Remove the memory module

Make sure the following FRUs (or CRUs) have been removed.

Chapter 4.Removing a FRU or CRU 33

“Remove the lower case” on page 32

Step 1. Disconnect the battery pack cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Step 2. Open the latches and remove the memory module from the system board.

Figure 8. 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 memory module shielding

Make sure the following FRUs (or CRUs) have been removed.

“Remove the lower case” on page 32

Step 1. Disconnect the battery pack cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

34 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Figure 9. Disconnect the battery pack cable

Step 2. Remove the memory module shielding.

Figure 10. Remove the memory module shielding

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

replacement part:

Memory module shielding

Remove the storage drive

Make sure the following FRUs (or CRUs) have been removed.

“Remove the lower case” on page 32

Step 1. Disconnect the battery pack cable from the system board.

Chapter 4.Removing a FRU or CRU 35

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Figure 11.

Step 2. Disconnect the storage drive cable.

Figure 12. Remove the memory module

Step 3. Remove the four screws and then remove the storage drive from the system board.

Figure 13. Remove four screws and the storage drive cable

36 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Screw specifications (14–inch models) Number of screws

M2 x L5 4

Screw specifications (15–inch and 17–inch

models)

Number of screws

M2 x L3.5 4

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

replacement part:

Memory module

Remove the storage drive bracket

Make sure the following FRUs (or CRUs) have been removed.

“Remove the lower case” on page 32

“Remove the storage drive” on page 35

Step 1. Remove four screws and then remove the storage drive bracket.

Chapter 4.Removing a FRU or CRU 37

Figure 14. Remove four screws and remove the storage drive bracket

Screw specifications Number of screws

M3 x L3 4

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

replacement part:

Storage drive bracket

Remove the battery pack

Remove the battery pack (with storage drive)

Make sure the following FRUs (or CRUs) have been removed.

“Remove the lower case” on page 32

Step 1. Disconnect the cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

38 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Figure 15. Disconnect the battery pack cable

Step 2. Remove two screws and then remove the battery pack.

Figure 16. Remove the battery pack

Screw specifications Number of screws

M2 x L5 2

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

replacement part:

Battery pack

Remove the battery pack (no storage drive)

Make sure the following FRUs (or CRUs) have been removed.

Chapter 4.Removing a FRU or CRU 39

“Remove the lower case” on page 32

Step 1. Disconnect the cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Figure 17. Disconnect the cable

Step 2. Remove six screws and then remove the battery pack.

Figure 18. Remove the battery pack

Screw specifications Number of screws

M2 x L3.5 6

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

replacement part:

40 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Battery pack

Remove the solid-state drive

Make sure the following FRUs (or CRUs) have been removed.

“Remove the lower case” on page 32

Step 1. Disconnect the battery pack cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Step 2. Remove one screw and then remove the solid-state drive bracket.

Figure 19. Remove the solid-state drive bracket

Screw specifications Number of screws

M2 x L2.8 1

Step 3. Remove the solid-state drive by pulling it away from the slot.

Figure 20. Remove the solid-state drive

Chapter 4.Removing a FRU or CRU 41

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

replacement part:

Solid-state drive

Remove the solid-state drive thermal pad

Make sure the following FRUs (or CRUs) have been removed.

“Remove the lower case” on page 32

Step 1. Disconnect the battery pack cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Figure 21. Disconnect the battery pack cable

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

42 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Figure 22. Remove the solid-state drive thermal pad

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

replacement part:

Solid-state drive thermal pad

Remove the heatsink

For ALC models

Make sure the following FRUs (or CRUs) have been removed.

“Remove the lower case” on page 32

Step 1. Disconnect the battery pack cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Chapter 4.Removing a FRU or CRU 43

Figure 23. Disconnect the battery pack cable

Step 2. Loosen four screws and then remove the heat sink.

Figure 24. Loosen four screws and remove the heat sink

Screw specifications Number of screws

M x L 4

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

replacement part:

Heat sink

For ITL models

Make sure the following FRUs (or CRUs) have been removed.

44 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

“Remove the lower case” on page 32

Step 1. Disconnect the battery pack cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Figure 25. Disconnect the battery pack cable

Step 2. Loosen six screws and then remove the heat sink.

Figure 26. Loosen six screws and remove the heat sink

Screw specifications Number of screws

M x L 6

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

replacement part:

Chapter 4.Removing a FRU or CRU 45

Heat sink

Remove the system fan

For 14–inch and 15–inch models

Make sure the following FRUs (or CRUs) have been removed.

“Remove the lower case” on page 32

Step 1. Disconnect the battery pack cable from the system board and remove the fan.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Figure 27. Disconnect the battery pack cable

Step 2. Disconnect the fan cable from the system board.

46 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Figure 28. Disconnect the fan cable

Step 3. Remove three screws and then remove the fan.

Figure 29. Remove three screws and the fan

Screw specifications (14–inch models) Number of screws

M2 x L5 3

Screw specifications (15–inch models) Number of screws

M2 x L5 3

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

replacement parts:

Fan

Chapter 4.Removing a FRU or CRU 47

For 17–inch models

Make sure the following FRUs (or CRUs) have been removed.

“Remove the lower case” on page 32

Step 1. Disconnect the fan cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Figure 30. Disconnect the fan cable

Step 2. Remove four screws and then remove the fan.

Figure 31. Remove four screws and the fan

Screw specifications Number of screws

M2 x L3.5 4

48 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

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

replacement parts:

Fans

Remove the Wi-Fi card

Make sure the following FRUs (or CRUs) have been removed.

“Remove the lower case” on page 32

Step 1. Disconnect the battery pack cable and Wi-Fi card cable from the system board and disconnect Wi-

Fi antenna cable from Wi-Fi card.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Figure 32. Disconnect the battery pack and Wi-Fi card cable

Step 2. Remove one screw and then remove the Wi-Fi card.

Chapter 4.Removing a FRU or CRU 49

Figure 33. Remove one screw and the Wi-Fi card

Screw specifications (for 14–inch and 17–inch

models)

Number of screws

M2 x L2.8 1

Screw specifications (for 15–inch models) Number of screws

M2 x L3.5 1

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

replacement part:

Wi-Fi card

Remove the USB board

For 14–inch models

Make sure the following FRUs (or CRUs) have been removed.

“Remove the lower case” on page 32

“Remove the system fan” on page 46

Step 1. Remove two screws and then remove the USB board.

50 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Figure 34. Remove the left I/O board bracket

Screw specifications Number of screws

M2 x L2.8 2

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

replacement parts:

USB board

For 15–inch models

Make sure the following FRUs (or CRUs) have been removed.

“Remove the lower case” on page 32

Step 1. Disconnect the battery pack cable and the USB board cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Chapter 4.Removing a FRU or CRU 51

Figure 35. Disconnect the battery pack and the USB board cable

Step 2. Remove three screws and then open the left hinge.

Figure 36. Remove the USB board

Screw specifications Number of screws

M2 x L2.5 2

M2 x L3.5 1

Step 3. Remove the USB board.

52 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Figure 37. Remove the USB board.

Screw specifications Number of screws

M2 x L3.5 2

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

replacement parts:

USB board

For 17–inch models

Make sure the following FRUs (or CRUs) have been removed.

“Remove the lower case” on page 32

Step 1. Disconnect the battery pack cable and the USB board cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Chapter 4.Removing a FRU or CRU 53

Figure 38. Disconnect the battery pack and the USB board cable

Step 2. Remove three screws and then remove the USB board.

Figure 39. Remove the USB board

Screw specifications Number of screws

M2 x L2.8 3

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

replacement parts:

USB board

Remove the USB board cable

Make sure the following FRUs (or CRUs) have been removed.

54 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

“Remove the lower case” on page 32

“Remove the system fan” on page 46

“Remove the USB board” on page 50

Step 1. Remove the USB board cable.

Figure 40. Remove the USB board cable

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

replacement parts:

USB board cable

Remove the coin-cell battery

Make sure the following FRUs (or CRUs) have been removed.

“Remove the lower case” on page 32

Step 1. Disconnect the battery pack cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Chapter 4.Removing a FRU or CRU 55

Figure 41. Disconnect the battery pack cable

Step 2. Press the coin-cell battery outwards and then remove it from the system board.

Figure 42. Remove the coin-cell battery

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

replacement part:

Coin-cell battery

Remove the fingerprint reader

Make sure the following FRUs (CRUs) have been removed.

“Remove the lower case” on page 32

“Remove the system fan” on page 46

“Remove the USB board” on page 50

56 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Step 1. Disconnect the fingerprint reader cable from the system board.

Figure 43. Disconnect the battery pack cable

Step 2. Remove the fingerprint reader.

Figure 44. Remove the fingerprint reader

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

replacement parts:

Fingerprint reader

Chapter 4.Removing a FRU or CRU 57

Remove the system board

For the 14–inch models

Make sure the following FRUs (or CRUs) have been removed.

“Remove the lower case” on page 32

“Remove the storage drive” on page 35

“Remove the battery pack” on page 38

“Remove the memory module” on page 33

“Remove the heatsink” on page 43

“Remove the system fan” on page 46

“Remove the coin-cell battery” on page 55

“Remove the Wi-Fi card” on page 49

Step 1. Disconnect cables connected to the system board and disconnect the antenna cables from the

wireless module.

Figure 45. Disconnect cables

Step 2. Remove five screws and then open the right hinge.

58 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Figure 46. Remove five screws and open the right hinge

Screw specifications Number of screws

M2 x L2.8 3

M2.5 x L5 2

Step 3. Remove the system board.

Figure 47. Remove the system board

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

replacement part:

System board

For 15–inch models

Make sure the following FRUs (or CRUs) have been removed.

Chapter 4.Removing a FRU or CRU 59

“Remove the lower case” on page 32

“Remove the storage drive” on page 35

“Remove the battery pack” on page 38

“Remove the memory module” on page 33

“Remove the heatsink” on page 43

“Remove the system fan” on page 46

“Remove the coin-cell battery” on page 55

“Remove the Wi-Fi card” on page 49

Step 1. Disconnect cables connected to the system board and disconnect the antenna cables from the

wireless module.

Figure 48. Disconnect cables

Step 2. Remove four screws and open the right hinge.

60 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Figure 49. Remove four screws and open the right hinge

Screw specifications Number of screws

M2.5 x L5 2

M2.5 x L3.5 2

Step 3. Remove the system board.

Figure 50. Remove the system board

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

replacement part:

System board

For the 17–inch models

Make sure the following FRUs (or CRUs) have been removed.

Chapter 4.Removing a FRU or CRU 61

“Remove the lower case” on page 32

“Remove the storage drive” on page 35

“Remove the battery pack” on page 38

“Remove the memory module” on page 33

“Remove the heatsink” on page 43

“Remove the system fan” on page 46

“Remove the coin-cell battery” on page 55

“Remove the Wi-Fi card” on page 49

Step 1. Disconnect cables connected to the system board and disconnect the antenna cables from the

wireless module.

Figure 51. Disconnect cables

Step 2. Remove five screws and open the right hinge.

62 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Figure 52. Remove five screws and open the right hinge

Screw specifications Number of screws

M2 x L2.8 3

M2.5 x L5 2

Step 3. Remove the system board.

Figure 53. Remove the system board

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

replacement part:

System board

Chapter 4.Removing a FRU or CRU 63

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 Goldern Key U1 tool.

Remove the upper case

Make sure the following FRUs (CRUs) have been removed.

“Remove the lower case” on page 32

Step 1. Disconnect the battery pack cable, EDP cables, and antenna cables.

Figure 54. Disconnect the battery pack cable, EDP cables, and antenna cables

Step 2. Remove four screws and open both hinges.

64 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Figure 55. Remove four screws and open both hinges

Screw specifications Number of screws

M2.5 x L5 4

Step 3. Remove the upper case assembly.

Attention: When disassembling the upper case, handle the LCD module and upper case with care.

Figure 56. Remove the upper case assembly

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

replacement part:

Upper case (with keyboard)

Chapter 4.Removing a FRU or CRU 65

Remove the LCD bezel

Make sure the following FRUs (CRUs) have been removed.

“Remove the upper case ” on page 64

Step 1. Insert your fingernails under the lower inner side of the LCD bezel and then carefully pull the LCD

bezel outwards. Repeat this action along the inner edges of the LCD bezel until all hooks that

secure the LCD bezel are detached.

Figure 57. Remove the LCD bezel

Attention: Do not pull the LCD bezel from the outer sides of the LCD bezel, otherwise the hooks

may be damaged. The lower side of the LCD bezel is fixed to the LCD panel with adhesive tape.

Detach with care.

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

replacement part:

LCD bezel

Remove the stripe cover

Make sure the following FRUs (CRUs) have been removed.

“Remove the upper case ” on page 64

Step 1. Remove the stripe cover.

66 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Figure 58. Remove the stripe cover

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

replacement part:

Stripe cover

Remove the hinge

For 14–inch models

Make sure the following FRUs (CRUs) have been removed.

“Remove the upper case ” on page 64

“Remove the LCD bezel” on page 66

“” on page

Step 1. Remove ten screws.

Chapter 4.Removing a FRU or CRU 67

Figure 59. Remove ten screws

Screw specifications Number of screws

M2 x L2 6

M2 x L2.8 4

Step 2. Remove the two hinges.

Figure 60. Remove the two hinges

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

replacement parts:

Hinge

For the 15–inch models

Make sure the following FRUs (CRUs) have been removed.

68 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

“Remove the upper case ” on page 64

“Remove the LCD bezel” on page 66

“” on page

Step 1. Remove 12 screws.

Figure 61. Remove ten screws

Screw specifications Number of screws

M2 x L2 8

M2 x L2.8 4

Step 2. Remove the two hinges.

Figure 62. Remove the two hinges

Chapter 4.Removing a FRU or CRU 69

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

replacement parts:

Hinge

Remove the LCD panel (for 14–inch and 15–inch models)

Make sure the following FRUs (CRUs) have been removed.

“Remove the upper case ” on page 64

“” on page

Step 1. Remove the removable tapes and carefully lift the LCD panel from the LCD cover.

Figure 63. Lift the LCD panel

Step 2. Disconnect the EDP cable and then remove the LCD panel.

70 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Figure 64. Disconnect the EDP cable and remove the LCD panel

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

replacement part:

LCD panel

Remove the LCD assembly (for 17–inch models)

Make sure the following FRUs (CRUs) have been removed.

“Remove the lower case” on page 32

“Remove the upper case ” on page 64

Step 1. Remove ten hinge screws and then carefully lift the LCD assembly from the LCD cover.

Figure 65. Lift the LCD assembly

Chapter 4.Removing a FRU or CRU 71

Screw specifications Number of screws

M2 x L2.2 8

M2 x L2.5 2

Step 2. Disconnect the EDP cable.

Figure 66. Disconnect the EDP cable

Step 3. Remove the LCD assembly.

Figure 67. Remove the LCD assembly

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

replacement part:

LCD assembly

72 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Remove the microphone rubber

Make sure the following FRUs (CRUs) have been removed.

“Remove the upper case ” on page 64

“Remove the LCD bezel” on page 66

“” on page

Step 1. Remove the microphone rubber.

Figure 68. Remove the microphone rubber

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

replacement parts:

Microphone rubber

Remove the camera

Make sure the following FRUs (CRUs) have been removed.

“Remove the upper case ” on page 64

“Remove the LCD bezel” on page 66

“” on page

Step 1. Remove the microphone rubber.

Chapter 4.Removing a FRU or CRU 73

Figure 69. Remove the microphone rubber

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

replacement parts:

Camera

Remove the EDP cable

Make sure the following FRUs (CRUs) have been removed.

“Remove the upper case ” on page 64

“Remove the LCD bezel” on page 66

“” on page

Step 1. Remove the EDP cable.

Figure 70. Remove the EDP cable

74 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

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

replacement parts:

EDP cable

Chapter 4.Removing a FRU or CRU 75

76 IdeaPad 3/IdeaPad 3i/IdeaPad Slim 3/IdeaPad Slim 3i series Hardware Maintenance Manual

Trademarks

LENOVO and the LENOVO logo are trademarks of Lenovo.

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Lenovo 3 User Manual

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