Table of Contents
- About this manual
- Chapter 1. Safety information
- Chapter 2. General checkout
- Chapter 3. Idetifying FRUs (CRUs)
- Chapter 4. Removing a FRU or CRU
- Service tools
- General guidelines
- Remove the lower case
- Remove the battery pack
- Remove the storage drive with bracket
- Remove the heat sink
- Remove the fan
- Remove the solid-state drive
- Remove the coin-cell battery
- Remove the memory module
- Remove the Wi-Fi card
- Remove the I/O board
- Remove the fingerprint reader
- Remove the system board
- Remove the upper case (with keyboard)
- Remove the hinge cover
- Remove the LCD bezel
- Remove the LCD panel
- Remove the hinges ( for 14–inch and 15–inch models only)
- Remove the microphone rubber
- Remove the camera module
- Trademarks
Lenovo 3 15ADA05 User Manual
Displayed below is the user manual for 3 15ADA05 by Lenovo which is a product in the Notebooks category. This manual has pages.
Related Manuals
IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05),
IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05),
IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3 (17″, 05)
Hardware Maintenance Manual
First Edition (December 2020)
© Copyright Lenovo 2020.
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 . . . . . . . . . . . . . . . . . . 27
Service tools . . . . . . . . . . . . . . . . 27
General guidelines. . . . . . . . . . . . . . 27
Remove the lower case . . . . . . . . . . . . 28
For 14–inch and 15–inch models . . . . . . 28
For 17–inch models . . . . . . . . . . . 29
Remove the battery pack . . . . . . . . . . . 31
Remove the storage drive with bracket. . . . . . 32
Remove the heat sink . . . . . . . . . . . . 34
Remove the fan . . . . . . . . . . . . . . . 36
Remove the solid-state drive. . . . . . . . . . 37
Remove the coin-cell battery. . . . . . . . . . 39
Remove the memory module . . . . . . . . . 40
Remove the Wi-Fi card . . . . . . . . . . . . 41
Remove the I/O board . . . . . . . . . . . . 42
For 14–inch and 15–inch models . . . . . . 42
For 17–inch models . . . . . . . . . . . 43
Remove the fingerprint reader . . . . . . . . . 44
Remove the system board. . . . . . . . . . . 45
Use a Golden Key U1 tool to flash-write key id
information . . . . . . . . . . . . . . . 47
Remove the upper case (with keyboard) . . . . . 47
Remove the hinge cover . . . . . . . . . . . 50
Remove the LCD bezel . . . . . . . . . . . . 50
Remove the LCD panel . . . . . . . . . . . . 51
For 14–inch and 15–inch models . . . . . . 51
For 17–inch models . . . . . . . . . . . 53
Remove the hinges ( for 14–inch and 15–inch
models only) . . . . . . . . . . . . . . . . 55
Remove the microphone rubber . . . . . . . . 57
Remove the camera module . . . . . . . . . . 57
Trademarks . . . . . . . . . . . . . . . . . lix
© Copyright Lenovo 2020 i
ii IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3 (17″,
05) Hardware Maintenance Manual
About this manual
This manual contains service and reference information for the following Lenovo products.
Model name Machine type (MT)
IdeaPad 3 14ADA05 81W0
IdeaPad 3 14ARE05 81W3
IdeaPad 3 14IGL05 81WH
IdeaPad 3 14IIL05 81WD
IdeaPad 3 14IJL05 82MK
IdeaPad 3 14IML05 81WA
IdeaPad 3 14ITL05 81X7
IdeaPad 3 15ADA05
81W1
82BQ
IdeaPad 3 15ARE05 81W4
82BR
IdeaPad 3 15IGL05 81WQ
IdeaPad 3 15IIL05 81WE
IdeaPad 3 15IJL05 82ML
IdeaPad 3 15IML05
81WB
81WR
82BS
IdeaPad 3 15ITL05 81X8
IdeaPad 3 17ADA05 81W2
IdeaPad 3 17ARE05 81W5
IdeaPad 3 17IML05 81WC
IdeaPad 3 17IIL05 81WF
IdeaPad 14sARE 2020 82CB
IdeaPad 14sIIL 2020 81WD
IdeaPad 14sIML 2020 81WA
IdeaPad 15sARE 2020 82CC
IdeaPad 15sIIL 2020 81WE
IdeaPad 15sIML 2020 81WB
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 2020 iii
iv IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3
(17″, 05) 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
© Copyright Lenovo 2020 1
– 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 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3 (17″,
05) 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
DANGER
DANGER
4IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3 (17″,
05) Hardware Maintenance Manual
6IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3 (17″,
05) Hardware Maintenance Manual
PERIGO
PERIGO
PERIGO
PERIGO
PERIGO
8IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3 (17″,
05) Hardware Maintenance Manual
DANGER
DANGER
DANGER
DANGER
VORSICHT
10 IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3
(17″, 05) Hardware Maintenance Manual
VORSICHT
VORSICHT
VORSICHT
12 IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3
(17″, 05) Hardware Maintenance Manual
14 IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3
(17″, 05) Hardware Maintenance Manual
16 IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3
(17″, 05) Hardware Maintenance Manual
18 IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3
(17″, 05) Hardware Maintenance Manual
20 IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3
(17″, 05) 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
© Copyright Lenovo 2020 21
• 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 (14″, 05), IdeaPad Slim 3 (14″, 05) (Machine types: 81W0, 81W3, 81WA, 81WD, 81WH, 81X7,
82CB and 82MK)
CRU Type
ac power adapter self-service
Table 2. Model: IdeaPad 3 (15″, 05), IdeaPad 3 Slim (15″, 05) (Machine type: 81W1, 81W4, 81WB, 81WE, 81WQ, 81WR,
81X8, 82BQ, 82BR, 82BS, 82BT, 82BU, 82CC and 82ML)
CRU Type
ac power adapter self-service
Table 3. Model: IdeaPad 3 (17″, 05), IdeaPad 3 Slim (17″, 05) (Machine type: 81W2, 81W5, 81WC and 81WF)
CRU Type
ac power adapter self-service
22 IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3
(17″, 05) 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. 14–inch and 15–inch models LCD exploded view
© Copyright Lenovo 2020 23
Table 4. FRU (CRU) categories
No. FRU (CRU) category
1Hinge cover
2Hinges
3LCD bezel
4LCD panel
5Removable tapes
6LCD cover
7Camera module
8Microphone rubber*
*The adhesive tapes attached to the microphone rubber are not reusable. Replace the microphone rubber, if
necessary.
24 IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3
(17″, 05) Hardware Maintenance Manual
*The adhesive tapes attached to the microphone rubber are not reusable. Replace the microphone rubber, if
necessary.
Table 6. FRU (CRU) categories
No. FRU (CRU) category
1Storage drive bracket
2Heat sink
3Fan
4Memory module
5I/O board
6I/O board FFC
7Fingerprint reader FFC
8Solid-state drive standoff
9Power button
10 Fingerprint reader
11 Upper case (with keyboard)
12 Solid-state drive
13 Wi-Fi card
14 Battery pack
15 System board
16 Coin-cell battery
17 Storage drive cable
18 Storage drive
19 Lower case
26 IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3
(17″, 05) 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 7. 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.
© Copyright Lenovo 2020 27
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 and 15–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 ten screws.
Figure 3. Remove ten screws
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(17″, 05) Hardware Maintenance Manual
Screw specifications Number of screws
M2.5 x 7 6
M2.5 x 4 4
Step 3. Pry up the latches and then remove the lower case.
Figure 4. Pry up the latches and remove the lower case
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement part:
Lower case
For 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.
Chapter 4.Removing a FRU or CRU 29
Step 2. Remove eleven screws.
Figure 5. Remove eleven screws
Screw specifications Number of screws
M2.5 x 7 7
M2.5 x 4 4
Step 3. Pry up the latches and then remove the lower case.
Figure 6. Pry up the latches and remove the lower case
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement part:
Lower case
30 IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3
(17″, 05) Hardware Maintenance Manual
Remove the battery pack
Make sure the following FRU (or CRU) has been removed.
“Remove the lower case” on page 28
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 7. Disconnect the battery pack cable
Step 2. Remove four screws and then remove the battery pack.
Figure 8. Remove the battery pack
Chapter 4.Removing a FRU or CRU 31
Screw specifications Number of screws
M2 x 5 4
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement part:
Battery pack
Remove the storage drive with bracket
Make sure the following FRU (or CRU) has been removed.
“Remove the lower case” on page 28
Step 1. Disconnect the battery pack cable from the system board.
Attention: Do not pull the cable. Use your fingernail to disconnect the cable.
Figure 9. Disconnect the battery pack cable
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(17″, 05) Hardware Maintenance Manual
Step 2. Remove four screws.
Figure 10. Remove four screws
Screw specifications Number of screws
M2 x 5 4
Step 3. Disconnect the storage drive cable and remove the storage drive with bracket.
Figure 11. Disconnect the storage drive cable and remove the storage drive with bracket
Chapter 4.Removing a FRU or CRU 33
Step 4. Remove four screws and remove the storage drive from the storage drive bracket.
Figure 12. Remove four screws and remove the storage drive
Screw specifications Number of screws
M3 x 3 4
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement parts:
Storage drive
Storage drive bracket
Remove the heat sink
Make sure the following FRU (or CRU) has been removed.
“Remove the lower case” on page 28
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Step 1. Disconnect the battery pack cable from the system board.
Figure 13. Disconnect the battery pack cable
Step 2. Loosen four screws and remove the heat sink.
Figure 14. Loosen four screws and remove the heat sink
Screw specifications Number of screws
M2 x 2.5 4
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement part:
Heat sink
Chapter 4.Removing a FRU or CRU 35
Remove the fan
Make sure the following FRU (or CRU) has been removed.
“Remove the lower case” on page 28
Step 1. Disconnect the battery pack cable from the system board.
Attention: Do not pull the cable. Use your fingernail to disconnect the cable.
Figure 15. Remove the battery pack cable
Step 2. Disconnect the fan cables from the system board and release the cables from the hooks.
Figure 16. Disconnect the fan cables
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Step 3. Remove three screws and remove the fan.
Screw specifications Number of screws
M2 x 3.5 2
M2 x 5 1
Figure 17. Remove three screws and remove the fan
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement parts:
Fan
Remove the solid-state drive
Make sure the following FRU (or CRU) has been removed.
“Remove the lower case” on page 28
Chapter 4.Removing a FRU or CRU 37
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 18. Remove the battery pack cable
Step 2. Remove one screw and slide the solid-state drive out of the slot.
Figure 19. Remove one screw and slide the solid-state drive out of the slot
Screw specifications Number of screws
M2 x 2.5 1
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement part:
Solid-state drive
38 IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3
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Remove the coin-cell battery
Make sure the following FRU (or CRU) has been removed.
“Remove the lower case” on page 28
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 20. Disconnect the battery pack cable
Step 2. Disconnect the coin-cell battery cable and remove the coin-cell battery.
Figure 21. Disconnect the coin-cell battery cable and remove the coin-cell battery
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 39
coin-cell battery
Remove the memory module
Make sure the following FRU (or CRU) has been removed.
“Remove the lower case” on page 28
Step 1. Disconnect the battery pack cable.
Attention: Do not pull the cable. Use your fingernail to disconnect the cable.
Figure 22. Disconnect the battery pack cable
Step 2. Disengage the latch and slide the memory module out of the slot.
Figure 23. Disengage the latch and slide the memory module out of the slot
40 IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3
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Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement part:
Memory module
Remove the Wi-Fi card
Make sure the following FRU (or CRU) has been removed.
“Remove the lower case” on page 28
Step 1. Disconnect the battery pack cable from the system board.
Attention: Do not pull the cable. Use your fingernail to disconnect the cable.
Figure 24. Disconnect the battery pack cable
Chapter 4.Removing a FRU or CRU 41
Step 2. Disconnect the Wi-Fi card cables from the Wi-Fi card. Then, remove one screw and slide the Wi-Fi
card out of the slot.
Figure 25. Remove one screw and slide the Wi-Fi card out of the slot
Screw specifications Number of screws
M2 x 2.5 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 I/O board
For 14–inch and 15–inch models
Make sure the following FRU (or CRU) has been removed.
“Remove the lower case” on page 28
Step 1. Disconnect the battery pack cable, speaker cable, and the I/O board cable.
42 IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3
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Figure 26. Disconnect cables from the I/O board
Step 2. Remove the two screws, open the hinge, and then remove the I/O board.
Figure 27. Remove the two screws, open the hinge, and then remove the I/O board
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement part:
I/O board
For 17–inch models
Make sure the following FRU (or CRU) has been removed.
“Remove the lower case” on page 28
Step 1. Disconnect the battery pack cable, speaker cable, and the I/O board cable.
Chapter 4.Removing a FRU or CRU 43
Figure 28. Disconnect cables from the I/O board
Step 2. Remove the two screws, and then remove the I/O board.
Figure 29. Remove the two screws, and then remove the I/O board
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement part:
I/O board
Remove the fingerprint reader
Make sure the following FRU (or CRU) has been removed.
“Remove the lower case” on page 28
“Remove the I/O board” on page 42
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Step 1. Disconnect the fingerprint board cable.
Figure 30. Disconnect the fingerprint board cable
Step 2. Remove the fingerprint reader.
Figure 31. Remove the fingerprint reader
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement part:
Fingerprint reader
Remove the system board
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 28
Chapter 4.Removing a FRU or CRU 45
“Remove the heat sink” on page 34
“Remove the fan” on page 36
“Remove the solid-state drive” on page 37
“Remove the coin-cell battery” on page 39
“Remove the memory module” on page 40
“Remove the Wi-Fi card” on page 41
Step 1. Disconnect cables connected to the system board.
Figure 32. Disconnect cables
Step 2. Remove five screws.
Figure 33. Remove five screws
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Screw specifications Number of screws
M2 x 2.5 3
M2 x 3.5 2
Step 3. Remove the system board.
Figure 34. 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
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 (with keyboard)
Make sure the following FRU ( or CRU) has been removed.
“Remove the lower case” on page 28
Chapter 4.Removing a FRU or CRU 47
Step 1. Disconnect battery pack cables, EDP cable, and antenna cables.
Figure 35. Disconnect battery pack cables, EDP cable, and antenna cables
Step 2. Remove four screws.
Figure 36. Remove four screws
Screw specifications Number of screws
M2.5 x 5 4
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Step 3. Open the hinges.
Figure 37. Open the hinges
Step 4. Remove the upper case.
Attention: When disassembling the upper case, handle the LCD module and upper case with care.
Figure 38. Remove the upper case
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 49
Upper case (with keyboard)
Remove the hinge cover
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 28
“Remove the upper case (with keyboard)” on page 47
Step 1. Remove the hinge cover.
Figure 39. Remove the hinge cover
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement parts:
Hinge cover
Remove the LCD bezel
Make sure the following FRU (or CRU) has been removed.
“Remove the lower case” on page 28
“Remove the upper case (with keyboard)” on page 47
“Remove the hinge cover” on page 50
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.
50 IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3
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Figure 40. 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 LCD panel
For 14–inch and 15–inch models
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 28
“Remove the upper case (with keyboard)” on page 47
“Remove the hinge cover” on page 50
“Remove the LCD bezel” on page 50
Chapter 4.Removing a FRU or CRU 51
Step 1. Remove the removable tapes.
Figure 41. Remove the removable tapes
Step 2. Carefully lift the LCD panel from the LCD cover.
Figure 42. Carefully lift the LCD panel from the LCD cover
52 IdeaPad 3 (14″, 05), IdeaPad 3 (15″, 05), IdeaPad 3 (17″, 05) , IdeaPad Slim 3 (14″, 05), IdeaPad Slim 3 (15″, 05), IdeaPad Slim 3
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Step 3. Disconnect the EDP cable.
Figure 43. Disconnect the EDP cable
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement part:
LCD panel for 14–inch and 15–inch models
EDP cable
For 17–inch models
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 28
“Remove the upper case (with keyboard)” on page 47
“Remove the hinge cover” on page 50
“Remove the LCD bezel” on page 50
Chapter 4.Removing a FRU or CRU 53
Step 1. Remove ten screws.
Figure 44. Remove 10 screws
Screw specifications Number of screws
M2 x 2.2 8
M2 x 2.5 2
Step 2. Carefully lift the LCD panel from the LCD cover.
Figure 45. Carefully lift the LCD panel from the LCD cover
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Step 3. Disconnect the EDP cable.
Figure 46. Disconnect the EDP cable
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement part:
LCD panel
EDP cable
Remove the hinges ( for 14–inch and 15–inch models only)
Make sure the following FRUs (or CRUs) have been removed.
“Remove the LCD bezel” on page 50
“Remove the hinge cover” on page 50
“Remove the LCD panel” on page 51
Chapter 4.Removing a FRU or CRU 55
Step 1. Remove 8 screws.
Figure 47. Remove 8 screws
Screw specifications Number of screws
M2 x 2.2 8
Step 2. Remove hinges.
Figure 48. Remove hinges
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement parts:
Hinges
LCD cover
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Remove the microphone rubber
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 28
“Remove the upper case (with keyboard)” on page 47
“Remove the LCD bezel” on page 50
“Remove the LCD panel” on page 51
Step 1. Remove the microphone rubber.
Figure 49. Remove the microphone rubber
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement part:
Microphone rubber
Remove the camera module
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 28
“Remove the upper case (with keyboard)” on page 47
“Remove the LCD panel” on page 51
Chapter 4.Removing a FRU or CRU 57
Step 1. Disconnect the camera module cable and remove the camera module.
Figure 50. Disconnect the camera module cable and remove the camera module
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement part:
Camera module
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