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Lenovo IdeaPad Gaming 3 15ARH7 Laptop Hardware Maintenance Manual PDF
Summary of Content for Lenovo IdeaPad Gaming 3 15ARH7 Laptop Hardware Maintenance Manual PDF
Hardware Maintenance Manual
IdeaPad Gaming 3i (15, 7), IdeaPad Gaming 3 (15, 7), IdeaPad
Gaming 3i (16, 7) and IdeaPad Gaming 3 (16, 7)
First Edition (February 2022)
Copyright Lenovo 2022.
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. Identifying FRUs (CRUs) . . . . . . . . . . . . . . . . . 23 Locate FRUs and CRUs . . . . . . . . . . . 23
Chapter 4. Removing a FRU or CRU . . . . . . . . . . . . . . . . . . 29 Service tools . . . . . . . . . . . . . . . . 29 General guidelines. . . . . . . . . . . . . . 29 Remove the deco cover. . . . . . . . . . . . 30 Remove the lower case . . . . . . . . . . . . 31 Remove the battery pack . . . . . . . . . . . 32 Remove the solid-state drive (SSD) (on selected models) . . . . . . . . . . . . . . . . . . 33 Remove the solid-state drive (SSD) (on selected models) . . . . . . . . . . . . . . . . . . 34
Remove the thermal module . . . . . . . . . . 34 Remove the Wi-Fi card . . . . . . . . . . . . 35 Remove the DC-in bracket . . . . . . . . . . 36 Remove the I/O board . . . . . . . . . . . . 37 Remove the memory module . . . . . . . . . 38 Remove the CMOS battery (on selected models) . . 39 Remove the CMOS battery (on selected models) . . 40 Remove the speakers . . . . . . . . . . . . 40 Remove the touchpad board bracket . . . . . . 41 Remove the system board. . . . . . . . . . . 42
Use a Golden Key U1 tool to flash-write key id information . . . . . . . . . . . . . . . 43
Remove the LCD module . . . . . . . . . . . 44 Remove the upper case. . . . . . . . . . . . 45 Disassemble the LCD module . . . . . . . . . 45
Remove the LCD bezel . . . . . . . . . . 45 Remove the strip cover . . . . . . . . . . 46 Remove the LCD panel . . . . . . . . . . 47 Remove the microphone rubbers . . . . . . 48 Remove the sensor board . . . . . . . . . 48 Remove the camera board. . . . . . . . . 49 Remove the EDP cable . . . . . . . . . . 50 Remove the hinge and hinge cover . . . . . 50 Remove the LCD cover . . . . . . . . . . 51
Appendix A. Label locations. . . . . . 53 Trademarks . . . . . . . . . . . . . . . . . lv
Copyright Lenovo 2022 i
ii Hardware Maintenance Manual
About this manual
This manual contains service and reference information for the following Lenovo products.
Machine Machine type (MT)
IdeaPad Gaming 3 15IAH7 82S9, 82UJ
IdeaPad Gaming3 15IAH7D 82S9
IdeaPad Gaming 3 15ARH7 82SB, 82UK
IdeaPad Gaming3 15ARH7D 82SB
IdeaPad Gaming 3 16IAH7 82SA
IdeaPad Gaming3 16IAH7D 82SA
IdeaPad Gaming 3 16ARH7 82SC
IdeaPad Gaming3 16ARH7D 82SC
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 2022 iii
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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 2022 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
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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 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
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DANGER
DANGER
DANGER
DANGER
Chapter 1. Safety information 9
DANGER
DANGER
DANGER
DANGER
VORSICHT
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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 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 2022 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. Models: All
CRU Type
ac power adapter self-service
Power cord self-service
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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 customers computer.
Copyright Lenovo 2022 23
Figure 1. IdeaPad Gaming 3 series exploded view
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Table 2. FRU (CRU) categories
No. FRU (CRU) category
1 LCD module Note: The LCD module as a whole is not an FRU, it contains FRUs as its components.
2 Deco cover
3 Upper case
4 CMOS battery
5 System board
6 I/O board with cable
7 Mylar for Wi-Fi card
8 Wi-Fi card
9 Thermal module
10 DC-in bracket
11 Battery pack
12 Speakers
13 Lower case
14 Touchpad board bracket
15 Thermal pad for SSD
16 Solid-state drive (SSD)
17 Memory shielding
18 Memory
a Power cord
b ac power adapter
c Screw kit
Chapter 3. Identifying FRUs (CRUs) 25
Figure 2. IdeaPad Gaming 3 series LCD module exploded view
Table 3. FRU categories for the LCD module
No. FRU (CRU) category
1 LCD cover
2 EDP cable
3 Camera board
4 Microphone rubber
5 Sensor board
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Table 3. FRU categories for the LCD module (continued)
6 Removable tape
7 Hinge cover
8 Hinges
9 LCD panel
10 Strip cover
11 LCD bezel
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 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 an 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 2022 29
3. Follow the correct sequence in the steps for removing an FRU, as shown in the illustrations by the numbers in square callouts.
4. When removing an 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 an 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 an 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 deco cover 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 four screws.
Figure 3. Remove four screws
Screw specifications Number of screws
1 M2 x L5.0 2
2 M2 x L11.5 2
Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part:
30 Hardware Maintenance Manual
Deco cover
Remove the lower case Make sure the following FRU (or CRU) has been removed.
Remove the deco cover on page 30
Step 1. Place the computer upside down on a flat surface.
Step 2. Remove ten screws.
Figure 4. Remove ten screws
Screw specifications Number of screws
1 M2 x L6 2
2 M2 x L11.5 4
3 M2 x L4 4
Step 3. Pry up the latches and then remove the lower case.
Figure 5. Pry up the latches and remove the lower case
Chapter 4. Removing a FRU or CRU 31
Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part:
Lower case
Remove the battery pack Make sure the following FRU (or CRU) has been removed.
Remove the deco cover on page 30
Remove the lower case on page 31
Step 1. Disconnect the battery pack cable from the system board. Remove four screws and then remove the battery pack.
Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.
Figure 6. Remove the battery pack (on selected models)
Figure 7. Remove the battery pack (on selected models)
Screw specifications Number of screws
M2 x L4 4
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Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part:
Battery pack
Remove the solid-state drive (SSD) (on selected models) Make sure the following FRUs (or CRUs) have been removed.
Remove the deco cover on page 30
Remove the lower case on page 31
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 the SSD thermal pad.
Figure 8. Remove the SSD thermal pad
Step 3. Remove one screw then remove the SSD by pulling it away from the slot.
Figure 9. Remove the SSD
Screw specifications Number of screws
M2.0 x L3.0 1
Chapter 4. Removing a FRU or CRU 33
Solid-state drive (SSD)
Remove the solid-state drive (SSD) (on selected models) Make sure the following FRUs (or CRUs) have been removed.
Remove the deco cover on page 30
Remove the lower case on page 31
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 then remove the SSD by pulling it away from the slot.
Figure 10. Remove the SSD
Screw specifications Number of screws
M2.0 x L3.0 1
Solid-state drive (SSD)
Remove the thermal module Make sure the following FRUs (or CRUs) have been removed.
Remove the deco cover on page 30
Remove the lower case on page 31
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. Disconnect the thermal module cable from the system board. Remove eight screws. Remove the thermal module
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Figure 11. Remove the thermal module
Screw specifications Number of screws
2 M2.0 x L3.0 8
Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part:
Thermal module
Remove the Wi-Fi card Make sure the following FRU (or CRU) has been removed.
Remove the deco cover on page 30
Remove the lower case on page 31
Remove the thermal module on page 34
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 the mylar.
Chapter 4. Removing a FRU or CRU 35
Figure 12. Remove the mylar
Step 3. Detach the main and auxiliary antenna cable connectors. Remove one screw and then remove the Wi-Fi card by pulling it away from the slot.
Figure 13. Remove the Wi-Fi card
Screw specifications Number of screws
M2.0 x L3.0 1
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts:
Mylar
Wi-Fi card
Remove the DC-in bracket Make sure the following FRU (or CRU) has been removed.
Remove the deco cover on page 30
Remove the lower case on page 31
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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 then remove the DC-in bracket.
Figure 14. Remove the DC-in bracket
Screw specifications Number of screws
M2 x L6.0 1
Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part:
DC-in bracket
Remove the I/O board Make sure the following FRU (or CRU) have been removed.
Remove the deco cover on page 30
Remove the lower case on page 31
Remove the thermal module on page 34
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. Detach the I/O board cable and then remove one screw. Remove the I/O board.
Chapter 4. Removing a FRU or CRU 37
Figure 15. Remove the I/O board
Screw specifications Number of screws
M2.0 x L3.0 1
Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part:
I/O board
Remove the memory module Make sure the following FRU (or CRU) has been removed.
Remove the deco cover on page 30
Remove the lower case on page 31
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 the memory shielding.
Figure 16. Remove the memory shielding
Step 3. Open the buckles and then remove the memory.
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Figure 17. Open the buckles and then remove the memory
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts:
Memory shielding
Memory
Remove the CMOS battery (on selected models) Make sure the following FRU (or CRU) has been removed.
Remove the deco cover on page 30
Remove the lower case on page 31
Remove the battery pack on page 32
Step 1. Disconnect the CMOS battery cable from the system board and then remove the CMOS battery.
Figure 18. Remove the CMOS battery
Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part:
CMOS battery
Chapter 4. Removing a FRU or CRU 39
Remove the CMOS battery (on selected models) Make sure the following FRU (or CRU) has been removed.
Remove the deco cover on page 30
Remove the lower case on page 31
Step 1. Remove the tape. Disconnect the CMOS battery cable from the system board and then remove the CMOS battery.
Figure 19. Remove the CMOS battery
Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part:
CMOS battery
Remove the speakers Make sure the following FRUs (CRUs) have been removed.
Remove the deco cover on page 30
Remove the lower case on page 31
Remove the battery pack on page 32
Step 1. Disconnect the speaker cable connector from the system board and release the speaker cable from the cable guide. Remove the speakers.
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Figure 20. Remove the speakers
Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part:
Speakers
Remove the touchpad board bracket Make sure the following FRUs (CRUs) have been removed.
Remove the deco cover on page 30
Remove the lower case on page 31
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 two screws then remove the touchpad board bracket.
Figure 21. Remove the touchpad board bracket
Screw specifications Number of screws
M2.0 x L3.0 2
Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part:
Touchpad board bracket
Chapter 4. Removing a FRU or CRU 41
Remove the system board Make sure the following FRUs (or CRUs) have been removed.
Remove the deco cover on page 30
Remove the lower case on page 31
Remove the battery pack on page 32
Remove the solid-state drive (SSD) (on selected models) on page 33
Remove the solid-state drive (SSD) (on selected models) on page 34
Remove the thermal module on page 34
Remove the Wi-Fi card on page 35
Remove the DC-in bracket on page 36
Remove the memory module on page 38
Step 1. Remove the tape then disconnect the EDP cable connector.
Figure 22. Disconnect the EDP cable connector
Step 2. Disconnect cables connected to the system board.
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Figure 23. Disconnect cables connected to the system board
Step 3. Remove five screws and then remove the system board.
Figure 24. Remove the system board
Screw specifications Number of screws
8 M2.0 x L3.0 4
9 M2 x L6.0 1
Go to https://support.lenovo.com/partslookup to look up the Lenovo part number 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.
Chapter 4. Removing a FRU or CRU 43
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 Make sure the following FRUs (CRUs) have been removed.
Remove the deco cover on page 30
Remove the lower case on page 31
Remove the battery pack on page 32
Remove the solid-state drive (SSD) (on selected models) on page 33
Remove the solid-state drive (SSD) (on selected models) on page 34
Remove the thermal module on page 34
Remove the Wi-Fi card on page 35
Remove the DC-in bracket on page 36
Remove the memory module on page 38
Remove the system board on page 42
Step 1. Release the antenna cable from the cable guide.
Figure 25. Release the antenna cable
Step 2. Turn over the computer and remove four screws. Lift the LCD module carefully.
Figure 26. Lift the LCD module
44 Hardware Maintenance Manual
Screw specifications Number of screws
M2.0 x L3.0 1
Remove the upper case Make sure the following FRUs (CRUs) have been removed.
Remove the deco cover on page 30
Remove the lower case on page 31
Remove the battery pack on page 32
Remove the solid-state drive (SSD) (on selected models) on page 33
Remove the solid-state drive (SSD) (on selected models) on page 34
Remove the thermal module on page 34
Remove the Wi-Fi card on page 35
Remove the DC-in bracket on page 36
Remove the I/O board on page 37
Remove the memory module on page 38
Remove the CMOS battery (on selected models) on page 39
Remove the CMOS battery (on selected models) on page 40
Remove the speakers on page 40
Remove the touchpad board bracket on page 41
Remove the system board on page 42
Disassemble the LCD module on page 45
Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part:
Upper case
Disassemble the LCD module The LCD module as a whole is not an FRU. Instead, it contains FRUs as its components. Before disassembling the LCD module, make sure it has been detached from the upper case.
Remove the LCD bezel Make sure the following FRU (CRU) has been removed.
Remove the LCD module on page 44
Step 1. Remove the LCD bezel.
Note: The LCD bezel is fragile and should be replaced if damaged.
Chapter 4. Removing a FRU or CRU 45
Figure 27. Remove the LCD bezel (on selected models)
Figure 28. Remove the LCD bezel (on selected models)
Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part:
LCD bezel
Remove the strip cover Make sure the following FRUs (CRUs) have been removed.
Disassemble the LCD module on page 45
Remove the LCD bezel on page 45
Step 1. Remove four screws then remove the strip cover.
46 Hardware Maintenance Manual
Screw specifications Number of screws
1 M2.0 x L3.0 4
Figure 29. Remove the strip cover
Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part:
Strip cover
Remove the LCD panel Make sure the following FRUs (CRUs) have been removed.
Remove the LCD module on page 44
Remove the LCD bezel on page 45
Step 1. Remove the two pieces of removable tape with tweezers.
Note: The removable tape is not reusable. Replace it when replacing related FRUs.
Figure 30. Remove the two pieces of removable tape with tweezers
Step 2. Lift the LCD panel slightly. Remove the tape. Disconnect the EDP cable from the LCD panel and then remove the LCD panel.
Chapter 4. Removing a FRU or CRU 47
Figure 31. Disconnect the EDP cable and remove the LCD panel
LCD panel
Removable tape
Remove the microphone rubbers Make sure the following FRUs (CRUs) have been removed.
Remove the LCD module on page 44
Remove the LCD bezel on page 45
Remove the LCD panel on page 47
Step 1. Remove the microphone rubbers.
Figure 32. Remove the microphone rubbers
Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part:
Microphone rubbers
Removable tape
Remove the sensor board Make sure the following FRUs (CRUs) have been removed.
Remove the LCD module on page 44
Remove the LCD bezel on page 45
Remove the LCD panel on page 47
48 Hardware Maintenance Manual
Step 1. Disconnect the sensor board cable connector and then remove the sensor board.
Figure 33. Remove the two pieces of microphone board conductive tape
Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part:
Sensor board
Removable tape
Remove the camera board Make sure the following FRUs (CRUs) have been removed.
Remove the LCD module on page 44
Remove the LCD bezel on page 45
Remove the LCD panel on page 47
Remove the microphone rubbers on page 48
Step 1. Remove the tape then disconnect the camera board cable connector. Remove the camera board.
Figure 34. Remove the camera board
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts:
Camera board
Chapter 4. Removing a FRU or CRU 49
Removable tape
Remove the EDP cable Make sure the following FRUs (CRUs) have been removed.
Remove the LCD module on page 44
Remove the LCD bezel on page 45
Remove the strip cover on page 46
Remove the LCD panel on page 47
Step 1. Remove the tape. Disconnect the sensor board cable connector and camera board connector. Release the EDP cable from the cable guide. Remove the EDP cable.
Figure 35. Remove the EDP cable
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts:
EDP cable
Removable tape
Remove the hinge and hinge cover Make sure the following FRUs (CRUs) have been removed.
Remove the LCD module on page 44
Remove the LCD bezel on page 45
Remove the strip cover on page 46
Remove the LCD panel on page 47
Step 1. Remove six screws then remove the hinge.
50 Hardware Maintenance Manual
Screw specifications Number of screws
1 M2.5 x L3 6
Figure 36. Remove the hinge
Step 2. Remove four screws then remove the hinge cover.
Screw specifications Number of screws
1 M2 x L3 4
Figure 37. Remove the hinge cover
Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part:
Hinge
Hinge cover
Removable tape
Remove the LCD cover Make sure the following FRUs (CRUs) have been removed.
Remove the LCD module on page 44
Remove the LCD bezel on page 45
Remove the strip cover on page 46
Remove the LCD panel on page 47
Chapter 4. Removing a FRU or CRU 51
Remove the microphone rubbers on page 48
Remove the sensor board on page 48
Remove the camera board on page 49
Remove the EDP cable on page 50
Remove the hinge and hinge cover on page 50
Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part:
LCD cover
52 Hardware Maintenance Manual
Appendix A. Label locations
Figure 38. Label layout on the back side of the base cover
Labels attached to the base cover are country/region specific. Make sure to apply the appropriate labels to the replacement base cover.
Table 5. All base cover labels
Label Label name Applied country/region Label dimensions
a Rating label Worldwide 66 mm x 24 mm
India 33 mm x 24 mm
b Print rating label India/Worldwide 43 mm x 24 mm
c GML label All 16.007 mm x 22.501 mm
d Country label Argentina/Belarus 40 mm x 8 mm
e TW label 70 mm x 10 mm
f Adapter label 65 mm x 20 mm
g Rating label Indonesia 26 mm x 10 mm
h Country label KCC label 50 mm x 43 mm
I Brazil 35 mm x 15 mm
j Israel/US/CA/TW 32 mm x 10 mm
k South Africa 20 mm x 10 mm
l Malaysia/Indonesia 15 mm x 10 mm
Copyright Lenovo 2022 53
Table 5. All base cover labels (continued)
m Japan 35 mm x 10 mm
n Vietnam 10 mm x 9 mm
o BIS label 22 mm x 30 mm
54 Hardware Maintenance Manual
Trademarks LENOVO and the LENOVO logo are trademarks of Lenovo.
All other trademarks are the property of their respective owners. 2021 Lenovo.
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