Lenovo V720 14 Hmm 201707 Hardware Maintenance Manual User Laptop (Lenovo) Type 80Y1
2017-07-28
User Manual: Lenovo V720-14 Hmm 201707 Hardware Maintenance Manual - V720-14 V720-14 Laptop (Lenovo) - Type 80Y1 80Y1
Open the PDF directly: View PDF 
.
Page Count: 66
- Chapter 1. Safety information
- Chapter 2. General checkout
- Chapter 3. Idetifying FRUs (CRUs)
- Chapter 4. Removing a FRU or CRU
- General guidelines
- Remove the lower case
- Remove the battery pack
- Remove the RAM module
- Remove the solid-state drive
- Remove the wireless module
- Remove the speakers
- Remove the LCD module
- Remove the heat sink
- Remove the I/O board
- Remove the system board and the dc-in cable
- Remove the fingerprint board
- Disassemble the LCD module
- Appendix A. Lenovo part numbers for replacement FRUs
- Appendix B. Lenovo part numbers for CRUs and miscellaneous parts
- Trademarks
Hardware Maintenance Manual
Lenovo V720–14
Hardware Maintenance Manual
Lenovo V720–14
First Edition (July 2017)
© Copyright Lenovo 2017.
Contents
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
Checking the ac power adapter . . . . . . . . 22
Lenovo V720–14 CRU list . . . . . . . . . . . 22
Chapter 3. Idetifying FRUs (CRUs) . . 25
All FRUs (CRUs) for Lenovo V720–14 . . . . . . 25
Chapter 4. Removing a FRU or
CRU . . . . . . . . . . . . . . . . . . 31
General guidelines. . . . . . . . . . . . . . 31
Remove the lower case . . . . . . . . . . . . 31
Remove the battery pack . . . . . . . . . . . 32
Remove the RAM module . . . . . . . . . . . 34
Remove the solid-state drive. . . . . . . . . . 34
Remove the wireless module. . . . . . . . . . 35
Remove the speakers . . . . . . . . . . . . 36
Remove the LCD module . . . . . . . . . . . 37
Remove the heat sink . . . . . . . . . . . . 38
Remove the I/O board . . . . . . . . . . . . 40
Remove the system board and the dc-in cable. . . 41
Remove the fingerprint board . . . . . . . . . 43
Disassemble the LCD module . . . . . . . . . 44
Remove the LCD bezel . . . . . . . . . . 44
Remove the hinge cover, the camera board,
and the microphone board. . . . . . . . . 45
Remove the LCD panel and the LCD cable . . 46
Remove the hinges. . . . . . . . . . . . 46
Appendix A. Lenovo part numbers
for replacement FRUs . . . . . . . . . 49
Appendix B. Lenovo part numbers
for CRUs and miscellaneous parts . . 55
Trademarks . . . . . . . . . . . . . . . . lvii
© Copyright Lenovo 2017 iii
iv 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 2017 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
2Hardware 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
4Hardware Maintenance Manual
6Hardware Maintenance Manual
PERIGO
PERIGO
PERIGO
PERIGO
PERIGO
8Hardware Maintenance Manual
DANGER
DANGER
DANGER
DANGER
VORSICHT
10 Hardware Maintenance Manual
VORSICHT
VORSICHT
VORSICHT
12 Hardware Maintenance Manual
14 Hardware Maintenance Manual
16 Hardware Maintenance Manual
18 Hardware Maintenance Manual
20 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.
• When you replace FRUs, it is recommended to use new nylon-coated screws.
• Be extremely careful during such write operations as copying, saving, or formatting. Drives in the computer
that you are servicing sequence might have been altered. If you select an incorrect drive, data or programs might be
overwritten.
• Replace a FRU only with another FRU of the correct model. When you replace a FRU, 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
© Copyright Lenovo 2017 21
• 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.
Checking the ac power adapter
If the computer fails only when the ac power adapter is used, refer to the information in this topic to check
the ac power adapter.
If the power-on indicator does not turn on, check the power cord of the ac power adapter for correct
continuity and installation.
To check the ac power adapter, do the following:
1. Unplug the ac power adapter cable from the computer.
2. Measure the output voltage across the plug of the ac power adapter cable. The correct voltages are
shown in the following table.
Pin Voltage (V dc)
1 +20
2 0
3Ground
Note: The output voltage across pin 2 might differ from the voltage that you measure.
3. Depending on the voltage that you measure, do one of the following:
• If the voltage is not correct, replace the ac power adapter.
• If the voltage is acceptable, do the following:
a. Replace the system board.
b. If the problem persists, call the Customer Support Center.
Note: Noise from the ac power adapter does not always indicate a defect.
Lenovo V720–14 CRU list
Model: Lenovo V720–14
MT: 80Y1
CRU Type
22 Hardware Maintenance Manual
24 Hardware Maintenance Manual
Chapter 3. Idetifying FRUs (CRUs)
All FRUs (CRUs) for Lenovo V720–14
The exploded illustrations help Lenovo service technicians identify FRUs or CRUs that they may need to
replace when servicing a customer’s computer.
Refer to Appendix A “Lenovo part numbers for replacement FRUs” on page 49 if you need to look up Lenovo
part numbers for a particular FRU or CRU.
© Copyright Lenovo 2017 25
1
2
3
4
6
9
7
10
13
17
18
12
14
11
8
16
15
5
Figure 1. Lenovo V720–14 exploded view
Table 1. FRU (CRU) categories
No. FRU (CRU) category
1LCD module
26 Hardware Maintenance Manual
Table 1. FRU (CRU) categories (continued)
2Upper case (with keyboard)
3Fingerprint sensor board
4Fingerprint bracket
5Heat sink
6System board
7dc-in cable
8I/O board bracket
9I/O board
10 dc-in bracket
11 RAM module
12 RAM EMI shield
13 Speakers
14 Sponge
15 Wireless module
16 Solid-state drive (SSD)
17 Battery pack
18 Lower case
Chapter 3.Idetifying FRUs (CRUs) 27
1
2
5
4
7
8
9
6
3
Figure 2. LCD module — exploded view
Table 2. FRU categories for the LCD module
No. FRU (CRU) category
1LCD bezel
2Hinge cover
3LCD panel
4WiGig cable (select models)
5Hinges
6LCD cable
7LCD base cover
28 Hardware Maintenance Manual
30 Hardware Maintenance Manual
Chapter 4. Removing a FRU or CRU
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. If screws are missing, look up the Lenovo
parts numbers in Appendix B “Lenovo part numbers for CRUs and miscellaneous parts” on page 55 for
replacement screws and order them through the Lenovo CRM system.
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
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.
© Copyright Lenovo 2017 31
Figure 3. Remove 10 screws
Screw specifications Number of screws
M2.0 x 6 10
Step 3. remove the lower case.
Figure 4. Remove the lower case
Refer to Table 3 “Part numbers for FRUs (CRUs)” on page 49 to look up the Lenovo part numbers of the
following replacement parts:
Lower case
Remove the battery pack
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 31
Step 1. Disconnect the cable from the system board.
32 Hardware Maintenance Manual
Figure 5. Disconnect the cable
Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.
Step 2. Remove 3 screws.
Figure 6. Remove screws and take out the battery pack
Screw specifications Number of screws
M2.0 x 3 3
Step 3. Take out the battery pack.
Figure 7. Take out the battery pack
Refer to Table 3 “Part numbers for FRUs (CRUs)” on page 49 to look up the Lenovo part numbers of the
following replacement parts:
Battery pack
Chapter 4.Removing a FRU or CRU 33
Remove the RAM module
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 31
Step 1. Remove the EMI shield.
Figure 8. Remove EMI shield
Step 2. Pull the retaining tags (on both sides of the slot) outwards to release the RAM module; remove the
RAM module by pulling it away from the slot.
Figure 9. Remove the RAM module
Refer to Table 3 “Part numbers for FRUs (CRUs)” on page 49 to look up the Lenovo part numbers of the
following replacement parts:
EMI shield
RAM module
Remove the solid-state drive
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 31
34 Hardware Maintenance Manual
Step 1. Remove 1 screw.
Figure 10. Remove 1 screw
Screw specifications Number of screws
M2.0 x 3 1
Step 2. Remove the solid-state drive by pulling it away from the slot.
Figure 11. Remove by pulling the solid-state drive
Refer to Table 3 “Part numbers for FRUs (CRUs)” on page 49 to look up the Lenovo part numbers of the
following replacement parts:
Solid-state drive
Remove the wireless module
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 31
Step 1. Disconnect the main and auxiliary antenna cables.
Chapter 4.Removing a FRU or CRU 35
Figure 12. Disconnect antenna cables
Step 2. Remove 1 screw.
b
Figure 13. Remove 1 screw
Screw specifications Number of screws
M2.0 x 3 1
Step 3. Remove the wireless module by pulling it away from the slot.
Figure 14. Remove the wireless module
Refer to Table 3 “Part numbers for FRUs (CRUs)” on page 49 to look up the Lenovo part numbers of the
following replacement parts:
Wireless module
Sponge
Remove the speakers
Make sure the following FRUs (CRUs) have been removed.
36 Hardware Maintenance Manual
“Remove the lower case” on page 31
“Remove the battery pack” on page 32
Step 1. Disconnect the cable from the system board.
Figure 15. Disconnect the cable
Step 2. Carefully remove the speakers off the piles.
Figure 16. Remove speakers
Refer to Table 3 “Part numbers for FRUs (CRUs)” on page 49 to look up the Lenovo part numbers of
replacement speakers.
Remove the LCD module
Make sure the following FRUs (CRUs) have been removed. Also make sure the antenna cables have been
disconnected from the wireless module and taken out of the cable guiders.
“Remove the lower case” on page 31
Step 1. Disconnect the LCD cable.
Chapter 4.Removing a FRU or CRU 37
Figure 17. Disconnect the LCD cable
Step 2. Remove four screws which secure the hinges to the upper case.
Figure 18. Remove 4 screws
Screw specifications Number of screws
M2.5 x 6 4
Step 3. Remove the LCD module.
The LCD module is not a FRU. Instead, it contains FRUs as its components. Refer to “Disassemble the LCD
module” on page 44 if you need to replace a FRU contained in the LCD module.
Remove the heat sink
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 31
“Remove the LCD module” on page 37
Step 1. Disconnect two plugs.
38 Hardware Maintenance Manual
Figure 19. Disconnect two plugs
Step 2. Remove 8 screws.
Figure 20. Remove screws
Screw specifications Number of screws
M2.0 x 3 8
Step 3. Remove the heat sink.
Figure 21. Remove the heat sink
Refer to Table 3 “Part numbers for FRUs (CRUs)” on page 49 to look up the Lenovo part numbers of the
following replacement parts:
Heat sink
Chapter 4.Removing a FRU or CRU 39
Remove the I/O board
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 31
“Remove the heat sink” on page 38
Step 1. Disconnect the cable between the I/O board and the system board.
Figure 22. Disconnect the cable
Step 2. Remove 1 screw.
Figure 23. Remove 1 screw
40 Hardware Maintenance Manual
Screw specifications Number of screws
M2.0 x 3 1
Step 3. Remove the I/O board and bracket.
Figure 24. Remove I/O board and bracket
Refer to Table 3 “Part numbers for FRUs (CRUs)” on page 49 to look up the Lenovo part numbers of the
following replacement parts:
I/O board
I/O board bracket
Remove the system board and the dc-in cable
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 31
“Remove the heat sink” on page 38
Step 1. Disconnect the dc-in cable and other cables from the system board, including the touch pad cable
and the fingerprint cable.
Note: Not all V720–14 SKUs include fingerprint sensor and fingerprint cable.
Chapter 4.Removing a FRU or CRU 41
Figure 25. Disconnect the cable
Step 2. Remove 7 screws.
Figure 26. Remove 7 screws
Screw specifications Number of screws
M2.0 x 3 7
Step 3. Remove the system board.
42 Hardware Maintenance Manual
Figure 27. Remove the system board
Step 4. Remove the I/O board and bracket.
Figure 28. Remove I/O board and bracket
Refer to Table 3 “Part numbers for FRUs (CRUs)” on page 49 to look up the Lenovo part numbers of the
following replacement parts:
System board
dc-in cable
dc-in bracket
Remove the fingerprint board
Make sure the following FRUs (or CRUs) have been removed. Also make sure the cable connecting the
fingerprint board to the system board has been disconnected.
Note: Not all V720–14 SKUs include the fingerprint board.
Chapter 4.Removing a FRU or CRU 43
“Remove the lower case” on page 31
“Remove the battery pack” on page 32
Step 1. Remove 1screw.
Screw specifications Number of screws
M2.0 x 3 1
Step 2. Remove the fingerprint board.
Refer to Table 3 “Part numbers for FRUs (CRUs)” on page 49 to look up the Lenovo part numbers of the
following replacement parts:
Fingerprint board
Fingerprint bracket
Disassemble the LCD module
The LCD module as a whole is not a FRU. Instead, it contains FRUs as its components. Before
disassembling the LCD module, make sure it has been detached from the base cover. Refer to “Remove the
LCD module” on page 37 for instructions.
Remove the LCD bezel
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 29. Pull the inner sides of 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.
44 Hardware Maintenance Manual
Step 2. Remove the LCD bezel.
Refer to Table 4 “Part numbers for LCD FRUs” on page 53 to look up the Lenovo part numbers for the
replacement LCD bezel.
Remove the hinge cover, the camera board, and the microphone board
Make sure the following FRUs (or CRUs) have been removed.
“Remove the LCD bezel” on page 44
Step 1. Remove 3 screws.
Figure 30. Pull the inner sides of the LCD bezel
Screw specifications Number of screws
M2.0 x 2.5 3
Step 2. Remove the hinge cover.
Figure 31. Remove the hinge cover
Step 3. Remove the camera board and the microphone board.
Refer to Table 3 “Part numbers for FRUs (CRUs)” on page 49 to look up the Lenovo part numbers of the
following replacement parts:
Hinge cover
Camera board
Microphone board
Chapter 4.Removing a FRU or CRU 45
Remove the LCD panel and the LCD cable
Make sure the following FRUs (or CRUs) have been removed.
“Remove the LCD bezel” on page 44
“Remove the hinge cover, the camera board, and the microphone board” on page 45
Step 1. Pull the two tapes (located on left and right edges under the LCD panel) downwards steadily; with
the bottom edge as an axis, lift up the top edge of the LCD panel.
Attention: Do not remove the LCD panel at this step. The LCD panel is connected by a cable at
the back side. Detach the cable before removing the LCD panel.
Figure 32. Remove 4 screws and lift up the LCD panel
Step 2. Check the back side of the LCD panel for the LCD connector and then unplug the LCD cable.
Step 3. Remove the LCD panel.
Step 4. Remove the LCD cable.
Refer to Table 3 “Part numbers for FRUs (CRUs)” on page 49 to look up the Lenovo part numbers of the
following replacement parts:
LCD panel
LCD cable
Refer to Appendix B “Lenovo part numbers for CRUs and miscellaneous parts” on page 55 to look up the
Lenovo part numbers of the replacement tape.
Remove the hinges
Make sure the following FRUs (or CRUs) have been removed.
“Remove the LCD bezel” on page 44
“Remove the hinge cover, the camera board, and the microphone board” on page 45
“Remove the LCD panel and the LCD cable” on page 46
Step 1. Pull the two tapes (located on left and right edges under the LCD panel) downwards steadily; with
the bottom edge as an axis, lift up the top edge of the LCD panel.
Attention: Do not remove the LCD panel at this step. The LCD panel is connected by a cable at
the back side. Detach the cable before removing the LCD panel.
46 Hardware Maintenance Manual
48 Hardware Maintenance Manual
Appendix A. Lenovo part numbers for replacement FRUs
When servicing a customer’s computer, Lenovo service technicians may use part numbers listed in the
following tables to order replacement parts through Lenovo CRM (customer relationship management)
system.
Table 3. Part numbers for FRUs (CRUs)
No. FRU (CRU) category Parts description Lenovo part number
2Upper case (with keyboard)
Upper CaseC80Y1 GREY FP W/TP/KB-US 5CB0N87329
Upper CaseC80Y1GREY NFP W/TP/KB-US 5CB0N87337
Upper CaseC80Y1GREY NFP W/TP/KB-SP 5CB0P98636
Upper CaseC80Y1GREYNFP W/TP/KB-USA 5CB0P98633
Upper CaseC80Y1GREY FPW/TP/KB-CF-E 5CB0P98635
Upper CaseC80Y1GREY FP W/TP/KB-SP 5CB0P98634
Upper CaseC80Y1GREY FP W/TP/KB-USA 5CB0P98638
Lower Case C 80Y1 GREY for NA 5CB0Q10636
3Fingerprint board
FP Board C 80Y1 W/cable 5C50N87324
4Fingerprint bracket
FP Brackete C 80Y1 5B40N87343
5Heat sink
Thermal Module C 80Y1 DIS W/Fan 5H40N87340
6System board
MBC80Y1NOKI37100UDISNTCMNFP WL 5B20N87833
MBC80Y1WINI37100UDISNTCMNFP WL 5B20N87839
MBC80Y1NOKI37100UDISTCM NFP WL 5B20N87815
MBC80Y1WINI37100UDISTCM NFP WL 5B20N87827
MBC80Y1NOKI37100UDISNTCMNFP WI 5B20N87819
MBC80Y1WINI37100UDISNTCMNFP WI 5B20N87808
MBC80Y1NOKI37100UDISTCM NFP WI 5B20N87817
MBC80Y1WINI37100UDISTCM NFP WI 5B20N87824
MBC80Y1NOKI37100UDISNTCM FP WL 5B20N87841
MBC80Y1WINI37100UDISNTCM FP WL 5B20N87810
MBC80Y1NOKI37100UDIS TCM FP WL 5B20N87803
MBC80Y1WINI37100UDIS TCM FP WL 5B20N87838
MBC80Y1NOKI37100UDISNTCM FP WI 5B20N87822
MBC80Y1WINI37100UDISNTCM FP WI 5B20N87843
© Copyright Lenovo 2017 49
Table 3. Part numbers for FRUs (CRUs) (continued)
MBC80Y1NOKI37100UDIS TCM FP WI 5B20N87825
MBC80Y1WINI37100UDIS TCM FP WI 5B20N87830
MBC80Y1NOKI57200UDISNTCMNFP WL 5B20N87809
MBC80Y1WINI57200UDISNTCMNFP WL 5B20N87816
MBC80Y1NOKI57200UDISTCM NFP WL 5B20N87804
MBC80Y1WINI57200UDISTCM NFP WL 5B20N87811
MBC80Y1NOKI57200UDISNTCMNFP WI 5B20N87814
MBC80Y1WINI57200UDISNTCMNFP WI 5B20N87834
MBC80Y1NOKI57200UDISTCM NFP WI 5B20N87801
MBC80Y1WINI57200UDISTCM NFP WI 5B20N87805
MBC80Y1NOKI57200UDISNTCM FP WL 5B20N87812
MBC80Y1WINI57200UDISNTCM FP WL 5B20N87826
MBC80Y1NOKI57200UDIS TCM FP WL 5B20N87835
MBC80Y1WINI57200UDIS TCM FP WL 5B20N87832
MBC80Y1NOKI57200UDISNTCM FP WI 5B20N87802
MBC80Y1WINI57200UDISNTCM FP WI 5B20N87818
MBC80Y1NOKI57200UDIS TCM FP WI 5B20N87837
MBC80Y1WINI57200UDIS TCM FP WI 5B20N87829
MBC80Y1NOKI77500UDISNTCMNFP WL 5B20N87844
MBC80Y1WINI77500UDISNTCMNFP WL 5B20N87840
MBC80Y1NOKI77500UDISTCM NFP WL 5B20N87806
MBC80Y1WINI77500UDISTCM NFP WL 5B20N87828
MBC80Y1NOKI77500UDISNTCMNFP WI 5B20N87831
MBC80Y1WINI77500UDISNTCMNFP WI 5B20N87823
MBC80Y1NOKI77500UDISTCM NFP WI 5B20N87807
MBC80Y1WINI77500UDISTCM NFP WI 5B20N87842
MBC80Y1NOKI77500UDISNTCM FP WL 5B20N87821
MBC80Y1WINI77500UDISNTCM FP WL 5B20N87846
MBC80Y1NOKI77500UDIS TCM FP WL 5B20N87820
MBC80Y1WINI77500UDIS TCM FP WL 5B20N87836
MBC80Y1NOKI77500UDISNTCM FP WI 5B20N87845
MBC80Y1WINI77500UDISNTCM FP WI 5B20N87800
MBC80Y1NOKI77500UDIS TCM FP WI 5B20N87813
MBC80Y1WINI77500UDIS TCM FP WI 5B20N87799
MBC80Y1NOKI36006UDIS TCM FP WI 5B20P37261
MBC80Y1WINI36006UDIS TCM FP WI 5B20P37248
MBC80Y1NOKI36006UDISNTCM FP WI 5B20P37262
MBC80Y1WINI36006UDISNTCM FP WI 5B20P37259
50 Hardware Maintenance Manual
Table 3. Part numbers for FRUs (CRUs) (continued)
MBC80Y1NOKI36006UDIS TCM FP WL 5B20P37244
MBC80Y1WLNI36006UDIS TCM FP WL 5B20P37249
MBC80Y1NOKI36006UDISNTCM FP WL 5B20P37277
MBC80Y1WLNI36006UDISNTCM FP WL 5B20P37276
MBC80Y1NOKI36006UDISTCM NFP WI 5B20P37252
MBC80Y1WINI36006UDISTCM NFP WI 5B20P37290
MBC80Y1NOKI36006UDISNTCMNFP WI 5B20P37247
MBC80Y1WINI36006UDISNTCMNFP WI 5B20P37265
MBC80Y1NOKI36006UDISTCM NFP WL 5B20P37255
MBC80Y1WLNI36006UDISTCM NFP WL 5B20P37288
MBC80Y1NOKI36006UDISNTCMNFP WL 5B20P37258
MBC80Y1WLNI36006UDISNTCMNFP WL 5B20P37253
MBC80Y1NOKI56300UDIS TCM FP WI 5B20P37275
MBC80Y1WINI56300UDIS TCM FP WI 5B20P37281
MBC80Y1NOKI56300UDISNTCM FP WI 5B20P37291
MBC80Y1WINI56300UDISNTCM FP WI 5B20P37245
MBC80Y1NOKI56300UDIS TCM FP WL 5B20P37250
MBC80Y1WLNI56300UDIS TCM FP WL 5B20P37269
MBC80Y1NOKI56300UDISNTCM FP WL 5B20P37272
MBC80Y1WLNI56300UDISNTCM FP WL 5B20P37283
MBC80Y1NOKI56300UDISTCM NFP WI 5B20P37246
MBC80Y1WINI56300UDISTCM NFP WI 5B20P37271
MBC80Y1NOKI56300UDISNTCMNFP WI 5B20P37268
MBC80Y1WINI56300UDISNTCMNFP WI 5B20P37284
MBC80Y1NOKI56300UDISTCM NFP WL 5B20P37279
MBC80Y1WLNI56300UDISTCM NFP WL 5B20P37285
MBC80Y1NOKI56300UDISNTCMNFP WL 5B20P37251
MBC80Y1WLNI56300UDISNTCMNFP WL 5B20P37287
MBC80Y1NOKI76500UDIS TCM FP WI 5B20P37280
MBC80Y1WINI76500UDIS TCM FP WI 5B20P37264
MBC80Y1NOKI76500UDISNTCM FP WI 5B20P37257
MBC80Y1WINI76500UDISNTCM FP WI 5B20P37282
MBC80Y1NOKI76500UDIS TCM FP WL 5B20P37286
MBC80Y1WLNI76500UDIS TCM FP WL 5B20P37270
MBC80Y1NOKI76500UDISNTCM FP WL 5B20P37256
MBC80Y1WLNI76500UDISNTCM FP WL 5B20P37266
MBC80Y1NOKI76500UDISTCM NFP WI 5B20P37278
MBC80Y1WINI76500UDISTCM NFP WI 5B20P37263
Appendix A. Lenovo part numbers for replacement FRUs 51
Table 3. Part numbers for FRUs (CRUs) (continued)
MBC80Y1NOKI76500UDISNTCMNFP WI 5B20P37260
MBC80Y1WINI76500UDISNTCMNFP WI 5B20P37267
MBC80Y1NOKI76500UDISTCM NFP WL 5B20P37273
MBC80Y1WLNI76500UDISTCM NFP WL 5B20P37274
MBC80Y1NOKI76500UDISNTCMNFP WL 5B20P37254
MBC80Y1WLNI76500UDISNTCMNFP WL 5B20P37289
7dc-in cable
DC-IN Cable C 80Y1 5C10N87321
8I/O board bracket
IO BD Bracket C 80Y1 5B40N87335
9I/O board
IO Board C 80Y1 W/cable 5C50N87322
10 dc-in bracket
DC IN Bracket C 80Y1 5B40N87323
11 RAM module
4GB D4 S M471A5244CB0-CRC SM30M49902
4GB D4S HMA851S6AFR6N-UH SM30G16505
4GB D4S RMSA3270MB86H9F-2400 SM30G16507
4GB D4S MTA4ATF51264HZ-2G3B1 SM30G16506
8GB D4 S M471A1K43CB1-CRC SM30M49901
8GB D4S HMA81GS6AFR8N-UH SM30G16509
8GB D4S RMSA3260MB78HAF-2400 SM30G16511
8GB D4S MTA8ATF1G64HZ-2G3B1 SM30G16510
8GB D4 26S MTA8ATF1G64HZ-2G6H1 SM30K25288
16GB D4 S M471A2K43CB1-CRC SM30M49903
16GB D4S HMA82GS6AFR8N-UH SM30G16513
SM30G16514 16GB D4S MTA16ATF2G64H-2G3B1 SM30G16514
12 RAM EMI shield
Memory Emi Shielding C 80Y1 5S60N87347
13 Speakers
720S-14 RT6-D Speaker 5SB0M65362
14 Sponge
WLAN Sponge C 80Y1 5T10N87319
15 Wireless module
Intel Windstorm Peak 8265 2*2ac+BT4.x Non-Vpro M.2
Module
SW10K97453
Liteon NFA344A QCA6174A 2*2ac+BT4.x PCIE M.2
WLAN Module
SW10K97465
52 Hardware Maintenance Manual
Table 3. Part numbers for FRUs (CRUs) (continued)
Intel Oak Peak 18265 WiGig+2*2ac+BT4.x PCI E Vpro
M.2 Module
SW10K97506
Intel WiGig RFEM3 Antenna Module SW10K97504
16 Solid state drive (SSD)
PM961 MZVLW128HEGR PCIE 128G SSD 5SD0L73445
XG4 128GB M.2 2280 PCIe-NVMe THNSN5128GPUK
SSD
5SD0M56301
PM961 MZVLW256HEHP PCIE 256G SSD 5SD0L73444
XG4 256GB M.2 2280 PCIe-NVMe THNSN5256GPUK
SSD
5SD0M56299
PM961 MZVLW512HMJP PCIE 512G SSD 5SD0L73443
XG4 512GB M.2 2280 PCIe-NVMe THNSN5512GPUK
SSD
5SD0M56300
17 Battery pack
K42 SP/A L16M4PB2 15V55Wh4cell bty 5B10M55951
K42 CP/S L16C4PB2 15.2V55Wh4cell bty 5B10M55952
K42 LG L16L4PB2 15.2V55Wh4cell bty 5B10M55950
18 Lower case
Lower Case C 80Y1 GREY 5CB0N87336
Note: Refer to Appendix B “Lenovo part numbers for CRUs and miscellaneous parts” on page 55 to look up
the Lenovo part numbers of ac power adapters and power cords.
Table 4. Part numbers for LCD FRUs
No. FRU (CRU) category Spare parts description Lenovo part number
1LCD bezel
LCD Bezel C 80Y1 W/magnet/mylar 5B30N87338
2Hinge cover
HINGE Cover C 80Y1 GREY 5CB0N87341
3LCD panel
AU B140HAN03.5 0A FHDI AG S NB 5D10M42879
SR LQ140M1JW31 FHDI AG S NB 5D10M42883
IN N140HCE-EN2 C1 FHDI AG S NB 5D10M42880
4WiGig cable (select models)
WIGIG Cable C 80Y1 5C10N87332
5Hinges
Hinge C 80Y1 L&R 5H50N87333
6LCD cable
LCD Cable C 80Y1 W/tape(R/L) 5C10N87326
Appendix A. Lenovo part numbers for replacement FRUs 53
Table 4. Part numbers for LCD FRUs (continued)
7LCD base cover
LCD Cover C 80Y1 GREY W/Wlan Anten 5CB0N87342
LCD Cover C 80Y1 GREY W/WIGIG Ante 5CB0N87344
8Camera board
Camera Q 80us 2 MIC 5C20L85359
9Microphone board
MIC Board C 80Y1 R 5C50N87346
MIC Board C 80Y1 L 5C50N87348
Tape Removable Tape C 80Y1 5T10N87330
54 Hardware Maintenance Manual
Appendix B. Lenovo part numbers for CRUs and
miscellaneous parts
The power cords and ac adapters are CRUs.
Table 5. Part numbers for FRUs (CRUs)
CRU category Parts description Lenovo part number
Screw pack
Screw Pack C 80Y1 5S10N87328
Tape
Removable Tape C 80Y1 5T10N87330
WLAN Sponge C 80Y1 5T10N87319
ac power adapter
Liteon ADLX65NLC3A 20V3.25A AD BIS 5A10J75114
Delta ADLX65NDC3A 20V3.25A COO SA10M42728
Chicony ADLX65NCC3A 20V3.25A COO SA10M42777
Power cord
LINETEK PC323+RVV300/300+LS15 1米电源线 145000600
Longwell LSG-31+RVV300/300+LS-18 1米电源线 145000568
VOLEX GB10S3+RVV 300/500+VAC5S 1米电源线 145000538
lux 0036+RVV 300/300 0.75/3C+0002 1米电源线 145500003
LINETEK LP-30B + SPT-2 + LS15 1米电源线 145000594
Longwell LP-30B+SPT-2 18AWG+LS-18 1米电源线 145000562
Volex US15S3+SPT-2 ＋VAC5S 1米电源线 145000537
lux 0014+SPT-2 60℃ 18/3C+0016 1米电源线 145500002
© Copyright Lenovo 2017 55
56 Hardware Maintenance Manual
Trademarks
Lenovo and the “lenovo” logo are trademarks of Lenovo in the United States, other countries or both:
Other company, product, or service names may be trademarks or service marks of others.
