Table of Contents
- Chapter 1. Safety information
- Chapter 2. General checkout
- Chapter 3. Identifying FRUs (CRUs)
- Chapter 4. Removing a FRU or CRU
- General guidelines
- Remove the lower case
- Remove the battery pack
- Remove the speakers
- Remove the memory module
- Remove the M.2 solid-state drive
- Remove the storage drive
- Remove the fan
- Remove the heat sink
- Remove the Wi-Fi card
- Remove the LCD module
- Remove the coin-cell battery
- Remove the I/O board
- Remove the system board
- Remove the touchpad assembly
- Remove the dc-in cable
- Disassemble the LCD module
- Appendix A. Label locations
- Trademarks
Lenovo S340 User Manual
Displayed below is the user manual for S340 by Lenovo which is a product in the Notebooks category. This manual has pages.
Related Manuals
Hardware Maintenance Manual
Lenovo IdeaPad S340 Series
Hardware Maintenance Manual
Lenovo IdeaPad S340 Series
First Edition (January 2019)
© Copyright Lenovo 2019.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services
Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-
35F-05925.
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 IdeaPad S340 Series CRU list . . . . . . 23
Chapter 3. Identifying FRUs
(CRUs) . . . . . . . . . . . . . . . . . 25
All FRUs (CRUs) for Lenovo IdeaPad S340
Series. . . . . . . . . . . . . . . . . . . 25
Miscellaneous parts . . . . . . . . . . . . . 32
Chapter 4. Removing a FRU or
CRU . . . . . . . . . . . . . . . . . . 33
General guidelines. . . . . . . . . . . . . . 33
Remove the lower case . . . . . . . . . . . . 33
Remove the battery pack . . . . . . . . . . . 35
Remove the speakers . . . . . . . . . . . . 37
Remove the memory module . . . . . . . . . 39
Remove the M.2 solid-state drive . . . . . . . . 40
Remove the storage drive . . . . . . . . . . . 42
Remove the fan . . . . . . . . . . . . . . . 44
Remove the heat sink . . . . . . . . . . . . 48
Remove the Wi-Fi card . . . . . . . . . . . . 49
Remove the LCD module . . . . . . . . . . . 52
Remove the coin-cell battery. . . . . . . . . . 56
Remove the I/O board . . . . . . . . . . . . 58
Remove the system board. . . . . . . . . . . 60
Remove the touchpad assembly . . . . . . . . 63
Remove the dc-in cable. . . . . . . . . . . . 65
Disassemble the LCD module . . . . . . . . . 67
Remove the LCD bezel . . . . . . . . . . 67
Remove the hinges. . . . . . . . . . . . 69
Remove the LCD panel and the LCD cable . . 71
Remove the camera and microphone board . . 74
Appendix A. Label locations. . . . . . 77
Trademarks . . . . . . . . . . . . . . . . lxxix
© Copyright Lenovo 2019 i
ii 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 2019 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 2019 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.
22 Hardware Maintenance Manual
Lenovo IdeaPad S340 Series CRU list
Model: Lenovo IdeaPad S340-14IWL, Lenovo IdeaPad S340-15IWL, Lenovo IdeaPad S340-14API, Lenovo IdeaPad
S340-15API, Lenovo IdeaPad S340-14IWL Touch, Lenovo IdeaPad S340-15IWL Touch, Lenovo IdeaPad S340-14API
Touch, Lenovo IdeaPad S340-15API Touch
MT: 81N7, 81N8, 81NB, 81NC, 81QD, 81QF, 81QE, 81QG
CRU Type
ac power adapter self-service
power cord self-service
Chapter 2.General checkout 23
24 Hardware Maintenance Manual
Chapter 3. Identifying FRUs (CRUs)
All FRUs (CRUs) for Lenovo IdeaPad S340 Series
The exploded illustrations help Lenovo service technicians identify FRUs or CRUs that they may need to
replace when servicing a customer’s computer.
© Copyright Lenovo 2019 25
Lenovo IdeaPad S340–14
a
b
d
g
j
n
m
i
h
f
k
l
o
p
q
r
t
c
e
s
Figure 1. Lenovo IdeaPad S340–14 exploded view
Table 1. FRU (CRU) categories – Lenovo IdeaPad S340–14
No. FRU (CRU) category Self-service CRU Optional-service CRU
1LCD module No No
2Upper case (with keyboard) No No
3dc-in cable No No
26 Hardware Maintenance Manual
Table 1. FRU (CRU) categories – Lenovo IdeaPad S340–14 (continued)
4Touchpad No No
5System board No No
6I/O board No No
7Coin-cell battery No No
8Sponge No No
9Wi-Fi card No No
10 M.2 solid-state-drive bracket No No
11 M.2 solid-state drive No No
12 Heat sink No No
13 Fan No No
14 Storage drive No No
15 Storage drive bracket No No
16 Memory module No No
17 Memory module shield No No
18 Battery pack No No
19 Speakers No No
20 Lower case No No
Chapter 3.Identifying FRUs (CRUs) 27
a
b
c
d
g
f
e
Figure 2. Lenovo IdeaPad S340–14 LCD module exploded view
Table 2. FRU categories for the LCD module – Lenovo IdeaPad S340–14
No. FRU (CRU) category Self-service CRU Optional-service CRU
1LCD bezel No No
2Hinge cover No No
3Hinges No No
4LCD panel No No
5LCD cable No No
6Camera and microphone board No No
7LCD base cover No No
28 Hardware Maintenance Manual
Lenovo IdeaPad S340–15
a
b
d
e
h
k
n
o
j
i
g
f
l
m
p
q
r
s
t
c
Figure 3. Lenovo IdeaPad S340–15 exploded view
Table 3. FRU (CRU) categories – Lenovo IdeaPad S340–15
No. FRU (CRU) category Self-service CRU Optional-service CRU
1LCD module No No
2Upper case (with keyboard) No No
3dc-in cable No No
Chapter 3.Identifying FRUs (CRUs) 29
Table 3. FRU (CRU) categories – Lenovo IdeaPad S340–15 (continued)
4Touchpad No No
5System board No No
6I/O board No No
7Coin-cell battery No No
8Wi-Fi card sponge No No
9Wi-Fi card No No
10 M.2 solid-state-drive bracket No No
11 M.2 solid-state drive No No
12 Heat sink No No
13 Fan No No
14 Storage drive No No
15 Storage drive bracket No No
16 Memory module No No
17 Memory module shield No No
18 Battery pack No No
19 Speakers No No
20 Lower case No No
30 Hardware Maintenance Manual
a
b
c
d
f
g
e
Figure 4. Lenovo IdeaPad S340–15 LCD module exploded view
Table 4. FRU categories for the LCD module – Lenovo IdeaPad S340–15
No. FRU (CRU) category Self-service CRU Optional-service CRU
1LCD bezel No No
2Hinge cover No No
3Hinges No No
4LCD panel No No
5LCD cable No No
Chapter 3.Identifying FRUs (CRUs) 31
Table 4. FRU categories for the LCD module – Lenovo IdeaPad S340–15 (continued)
6Camera and microphone board No No
7LCD base cover No No
Miscellaneous parts
Table 5. Miscellaneous parts
FRU descriptions Self-service CRU Optional-service CRU
Screw pack No No
Thermalpad No No
Rubber No No
Removable tapes No No
32 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 “Miscellaneous parts” on page 32 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 2019 33
2
1
2
2
2
2
2
1
1
1
Figure 5. Remove 10 screws – Lenovo IdeaPad S340–14
Screw specifications Number of screws
M2.0 x 8 1 4
M2.0 x 4.5 2 6
1
2
1
1
1
1
1
1
1
1
Figure 6. Remove 10 screws – Lenovo IdeaPad S340–15
Screw specifications Number of screws
M2.0 x 6.5 1 9
M2.0 x 3.5 2 1
Step 3. remove the lower case.
34 Hardware Maintenance Manual
Figure 7. Remove the lower case – Lenovo IdeaPad S340–14
Figure 8. Remove the lower case – Lenovo IdeaPad S340–15
Remove the battery pack
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 33
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 directly.
Chapter 4.Removing a FRU or CRU 35
Figure 9. Disconnect the cable – Lenovo IdeaPad S340–14
Figure 10. Disconnect the cable – Lenovo IdeaPad S340–15
Step 2. Remove 3 screws.
Figure 11. Remove screws – Lenovo IdeaPad S340–14
Screw specifications Number of screws
M2.0 x 3 3
36 Hardware Maintenance Manual
Figure 12. Remove screws – Lenovo IdeaPad S340–15
Screw specifications Number of screws
M2.0 x 3 3
Step 3. Remove the battery pack.
Figure 13. Remove the battery pack – Lenovo IdeaPad S340–14
Figure 14. Remove the battery pack – Lenovo IdeaPad S340–15
Remove the speakers
Make sure the following FRUs (CRUs) have been removed.
Chapter 4.Removing a FRU or CRU 37
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
Step 1. Disconnect the cable.
Figure 15. Disconnect the cable – Lenovo IdeaPad S340–14
Figure 16. Disconnect the cable – Lenovo IdeaPad S340–15
Step 2. Carefully remove the speakers off the piles.
Figure 17. Remove the speakers – Lenovo IdeaPad S340–14
38 Hardware Maintenance Manual
Figure 18. Remove the speakers – Lenovo IdeaPad S340–15
Remove the memory module
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
Step 1. Remove the memory module shield.
Figure 19. Remove memory module shield – Lenovo IdeaPad S340–14
Figure 20. Remove memory module shield – Lenovo IdeaPad S340–15
Chapter 4.Removing a FRU or CRU 39
Step 2. Pull the retaining tags (on both sides of the slot) outwards to release the memory module. Remove
the memory module by pulling it away from the slot.
2
1 1
Figure 21. Remove the memory module – Lenovo IdeaPad S340–14
2
1 1
Figure 22. Remove the memory module – Lenovo IdeaPad S340–15
Remove the M.2 solid-state drive
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
Step 1. Remove 1 screw.
40 Hardware Maintenance Manual
Figure 23. Remove 1 screw – Lenovo IdeaPad S340–14
Screw specifications Number of screws
M2.0 x 3 1
Figure 24. Remove 1 screw – Lenovo IdeaPad S340–15
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 25. Remove by pulling the M.2 solid-state drive – Lenovo IdeaPad S340–14
Chapter 4.Removing a FRU or CRU 41
Figure 26. Remove by pulling the M.2 solid-state drive – Lenovo IdeaPad S340–15
Step 3. Remove 1 screw to detach the bracket.
Figure 27. Remove 1 screw – Lenovo IdeaPad S340–14
Screw specifications Number of screws
M2.0 x 2 1
Figure 28. Remove 1 screw – Lenovo IdeaPad S340–15
Screw specifications Number of screws
M2.0 x 2.5 1
Remove the storage drive
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
“Remove the speakers” on page 37
Note: To remove the speakers is a prerequisite only for Lenovo IdeaPad S340–15.
Step 1. Remove the screws.
42 Hardware Maintenance Manual
Figure 29. Remove 3 screws – Lenovo IdeaPad S340–14
Screw specifications Number of screws
M2.0 x 3 3
Figure 30. Remove 4 screws – Lenovo IdeaPad S340–15
Screw specifications Number of screws
M2.0 x 3 4
Step 2. Remove the storage drive in the direction shown by the arrow.
Figure 31. Remove the storage drive – Lenovo IdeaPad S340–14
Chapter 4.Removing a FRU or CRU 43
Figure 32. Remove the storage drive – Lenovo IdeaPad S340–15
Step 3. Remove 4 screws to detach the metal frame.
Figure 33. Remove the storage drive bracket – Lenovo IdeaPad S340–14
Screw specifications Number of screws
M3.0 x 3 4
Figure 34. Remove the storage drive bracket – Lenovo IdeaPad S340–15
Screw specifications Number of screws
M3.0 x 3 4
Remove the fan
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
Step 1. Release the LCD cable from the fan hooks.
44 Hardware Maintenance Manual
Figure 38. Disconnect the cable – Lenovo IdeaPad S340–15
Step 3. Remove 2 screws.
Figure 39. Remove 2 screws – Lenovo IdeaPad S340–14
Screw specifications Number of screws
M2.0 x 3 2
46 Hardware Maintenance Manual
Remove the heat sink
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
“Remove the fan” on page 44
Step 1. Remove 3 screws.
Figure 43. Remove 3 screws – Lenovo IdeaPad S340–14
Screw specifications Number of screws
M2.0 x 3 3
Figure 44. Remove 3 screws – Lenovo IdeaPad S340–15
Screw specifications Number of screws
M2.0 x 3 3
Step 2. Remove the heat sink.
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Figure 45. Remove the heat sink – Lenovo IdeaPad S340–14
Figure 46. Remove the heat sink – Lenovo IdeaPad S340–15
Remove the Wi-Fi card
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
Step 1. Remove the sponge on the Wi-Fi card.
Chapter 4.Removing a FRU or CRU 49
Figure 47. Remove the sponge – Lenovo IdeaPad S340–14
Figure 48. Remove the sponge – Lenovo IdeaPad S340–15
Step 2. Disconnect the main and auxiliary antenna cables.
Figure 49. Disconnect antenna cables – Lenovo IdeaPad S340–14
50 Hardware Maintenance Manual
Screw specifications Number of screws
M2.0 x 3 1
Step 4. Remove the Wi-Fi card by pulling it away from the slot.
Figure 53. Remove the Wi-Fi card – Lenovo IdeaPad S340–14
Figure 54. Remove the Wi-Fi card – Lenovo IdeaPad S340–15
Remove the LCD module
Make sure the following FRUs (CRUs) have been removed. Also make sure the antenna cables have been
disconnected from the Wi-Fi card and taken out of the cable guiders.
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
“Remove the Wi-Fi card” on page 49
Note: To remove the Wi-Fi card is a prerequisite only for Lenovo IdeaPad S340–14.
Step 1. Disconnect the LCD cable.
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Figure 57. Remove 4 screws – Lenovo IdeaPad S340–14
Screw specifications Number of screws
M2.0 x 5.5 4
Figure 58. Remove 4 screws – Lenovo IdeaPad S340–15
Screw specifications Number of screws
M2.0 x 6 4
Step 3. Open the hinges.
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Figure 62. Remove the LCD module – Lenovo IdeaPad S340–15
Remove the coin-cell battery
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
Step 1. Disconnect the cable from the I/O board.
Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable directly.
Figure 63. Disconnect the cable – Lenovo IdeaPad S340–14
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Figure 66. Remove the coin-cell battery– Lenovo IdeaPad S340–15
Remove the I/O board
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
“Remove the Wi-Fi card” on page 49
“Remove the LCD module” on page 52
“Remove the coin-cell battery” on page 56
Step 1. Disconnect the cable from the system board.
1
2
Figure 67. Disconnect the cable – Lenovo IdeaPad S340–14
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Screw specifications Number of screws
M2.0 x 3 1
Step 3. Remove the I/O board.
Figure 71. Remove I/O board – Lenovo IdeaPad S340–14
Figure 72. Remove I/O board – Lenovo IdeaPad S340–15
Remove the system board
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
“Remove the speakers” on page 37
“Remove the memory module” on page 39
“Remove the M.2 solid-state drive” on page 40
“Remove the storage drive” on page 42
“Remove the fan” on page 44
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“Remove the heat sink” on page 48
“Remove the Wi-Fi card” on page 49
“Remove the LCD module” on page 52
“Remove the coin-cell battery” on page 56
“Remove the I/O board” on page 58
Step 1. Disconnect the remaining cables on the system board.
1
2
1
2
Figure 73. Disconnect the cables – Lenovo IdeaPad S340–14
1
2
Figure 74. Disconnect the cables – Lenovo IdeaPad S340–15
Step 2. Remove the screws.
Chapter 4.Removing a FRU or CRU 61
Figure 75. Remove 2 screws – Lenovo IdeaPad S340–14
Screw specifications Number of screws
M2.0 x 3 2
Figure 76. Remove 3 screws – Lenovo IdeaPad S340–15
Screw specifications Number of screws
M2.0 x 3 3
Step 3. Remove the system board.
Figure 77. Remove the system board – Lenovo IdeaPad S340–14
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Figure 78. Remove the system board – Lenovo IdeaPad S340–15
Remove the touchpad assembly
Make sure the following FRUs (or CRUs) have been removed.
For Lenovo IdeaPad S340–14
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
“Remove the speakers” on page 37
“Remove the memory module” on page 39
“Remove the M.2 solid-state drive” on page 40
“Remove the storage drive” on page 42
“Remove the fan” on page 44
“Remove the heat sink” on page 48
“Remove the Wi-Fi card” on page 49
“Remove the LCD module” on page 52
“Remove the coin-cell battery” on page 56
“Remove the I/O board” on page 58
“Remove the system board” on page 60
For Lenovo IdeaPad S340–15
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
“Remove the speakers” on page 37
Step 1. Disconnect the cable from the system board.
Note: This step is only applicable here to Lenovo IdeaPad S340–15. For Lenovo IdeaPad S340–
14, this step has been done during removing the system board.
Chapter 4.Removing a FRU or CRU 63
1
2
Figure 79. Disconnect the cable – Lenovo IdeaPad S340–15
Step 2. Remove 4 screws.
Figure 80. Remove 4 screws – Lenovo IdeaPad S340–14
Screw specifications Number of screws
M2 x 2 4
Figure 81. Remove 4 screws – Lenovo IdeaPad S340–15
Screw specifications Number of screws
M2 x 1.5 4
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Step 3. Remove the touchpad assembly.
Figure 82. Remove touchpad assembly– Lenovo IdeaPad S340–14
Figure 83. Remove touchpad assembly– Lenovo IdeaPad S340–15
Remove the dc-in cable
Make sure the following FRUs (CRUs) have been removed:
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
“Remove the speakers” on page 37
“Remove the memory module” on page 39
“Remove the M.2 solid-state drive” on page 40
“Remove the storage drive” on page 42
“Remove the fan” on page 44
“Remove the heat sink” on page 48
“Remove the Wi-Fi card” on page 49
“Remove the LCD module” on page 52
“Remove the coin-cell battery” on page 56
“Remove the I/O board” on page 58
“Remove the system board” on page 60
Chapter 4.Removing a FRU or CRU 65
Step 1. Use a prying tool to detach the dc-in cable from the upper case.
CAUTION:
Do not pull the cable directly.
Figure 84. Detach the dc-in cable – Lenovo IdeaPad S340–14
Figure 85. Detach the dc-in cable– Lenovo IdeaPad S340–15
Step 2. Remove the dc-in cable from the socket.
Figure 86. Remove the dc-in cable – Lenovo IdeaPad S340–14
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Figure 87. Remove the dc-in connector – Lenovo IdeaPad S340–15
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.
Remove the LCD bezel
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
“Remove the Wi-Fi card” on page 49
“Remove the LCD module” on page 52
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.
Chapter 4.Removing a FRU or CRU 67
Figure 88. Pull the inner sides of the LCD bezel – Lenovo IdeaPad S340–14
Figure 89. Pull the inner sides of the LCD bezel – Lenovo IdeaPad S340–15
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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.
Step 2. Remove the LCD bezel.
Remove the hinges
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
“Remove the Wi-Fi card” on page 49
“Remove the LCD module” on page 52
“Remove the LCD bezel” on page 67
Step 1. Remove 2 screws.
Note: This step is only applicable to Lenovo IdeaPad S340–14.
Figure 90. Remove 2 screws– Lenovo IdeaPad S340–14
Step 2. Remove the hinge cover.
Figure 91. Remove the hinge cover– Lenovo IdeaPad S340–14
Chapter 4.Removing a FRU or CRU 69
Figure 92. Remove the hinge cover– Lenovo IdeaPad S340–15
Step 3. Remove 8 screws.
Figure 93. Remove 8 screws – Lenovo IdeaPad S340–14
Screw specifications Number of screws
M2.5 x 2 8
Figure 94. Remove 8 screws – Lenovo IdeaPad S340–15
Screw specifications Number of screws
M2.5 x 2 8
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Step 4. Remove the hinges.
Figure 95. Remove the hinges – Lenovo IdeaPad S340–14
Figure 96. Remove the hinges – Lenovo IdeaPad S340–15
Remove the LCD panel and the LCD cable
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
“Remove the Wi-Fi card” on page 49
“Remove the LCD module” on page 52
“Remove the LCD bezel” on page 67
“Remove the hinges” on page 69
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.
Chapter 4.Removing a FRU or CRU 71
Figure 97. Pull the tape– Lenovo IdeaPad S340–14
Figure 98. Pull the tape– Lenovo IdeaPad S340–15
Step 2. Check the back side of the LCD panel for the LCD connector and then unplug the LCD cable.
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Figure 101. Remove the LCD panel – Lenovo IdeaPad S340–14
Figure 102. Remove the LCD panel – Lenovo IdeaPad S340–15
Remove the camera and microphone board
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 33
“Remove the battery pack” on page 35
“Remove the Wi-Fi card” on page 49
“Remove the LCD module” on page 52
“Remove the LCD bezel” on page 67
“Remove the hinges” on page 69
“Remove the LCD panel and the LCD cable” on page 71
Step 1. Disconnect the cable.
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Figure 105. Remove the camera and microphone board – Lenovo IdeaPad S340–14
Figure 106. Remove the camera and microphone board – Lenovo IdeaPad S340–15
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Appendix A. Label locations
acd
b
Figure 107. Label layout on the back side of the lower case– Lenovo IdeaPad S340–14
ad
b
Figure 108. Label layout on the back side of the lower case– Lenovo IdeaPad S340–15
Labels attached to the base cover are country/region specific. Make sure to apply the appropriate labels to
the replacement base cover.
Table 6. All base cover labels
Label Label description Applied country/region Label dimensions
aRating label 100 mm x 30 mm
bGML label 16 mm x 22.5 mm
cOffice label 25.4 mm x 25.4 mm
dVGA label 17.592 mm x 17.592 mm
© Copyright Lenovo 2019 77
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Trademarks
Lenovo, the “lenovo” logo and IdeaPad 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.