Lenovo Tablet 10 Hardware Maintenance Manual (English) (HMM) Hmm En

2018-03-28

User Manual: Lenovo (English) Hardware Maintenance Manual (HMM) - Lenovo Tablet 10 Lenovo Tablet 10 Lenovo Tablet 10

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Lenovo Tablet 10
Hardware Maintenance Manual

Note: Before using this information and the product it supports, be sure to read the general information
under Appendix A “Notices” on page 69.

First Edition (February 2018)
© Copyright Lenovo 2018.
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. GS35F-05925.

Contents
About this manual . . . . . . . . . . . . iii
Chapter 1. Safety information . . . . . . 1
General safety . . . . . . . . . . . . . .
Electrical safety . . . . . . . . . . . . . .
Safety inspection guide . . . . . . . . . . .
Handling devices that are sensitive to electrostatic
discharge . . . . . . . . . . . . . . . .
Grounding requirements . . . . . . . . . .
Safety notices (multilingual translations) . . . .

. . 1
. . 1
. . 3
. . 3
. . 4
. . 4

Chapter 2. Important service
information . . . . . . . . . . . . . . . 21
Strategy for replacing FRUs . . . . . . . . .
Important notice for replacing a system
board . . . . . . . . . . . . . . . .
How to use error message . . . . . . . .
Strategy for replacing FRUs for CTO, special bid
model, and standard models. . . . . . . . .
Product definition . . . . . . . . . . .
FRU identification . . . . . . . . . . .

.
.

21
22

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22
22
22

Chapter 3. General checkout . . . . . 25
What to do first . . . . . . . . . . . .
Checkout guide . . . . . . . . . . . .
Lenovo Companion or Lenovo Vantage .
Quick test programs . . . . . . . .
UEFI diagnostic program . . . . . .
Bootable diagnostic programs . . . .
Power system checkout . . . . . . . .
Checking the built-in battery . . . . .
Checking the operational charging . .
Checking the ac power adapter . . . .

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25
26
26
26
27
27
28
28
29
29

Chapter 4. Related service
information . . . . . . . . . . . . . . . 31
Windows recovery apps . . . . . . . . . .
Resetting your computer . . . . . . . .
Recovering your operating system if Windows
10 fails to start . . . . . . . . . . . .
Creating and using a recovery USB drive . .
Lenovo factory recovery USB key . . . . . . .
Using passwords . . . . . . . . . . . . .
Symptom-to-FRU index . . . . . . . . . .
Error codes. . . . . . . . . . . . . .
Beep errors. . . . . . . . . . . . . .
Intermittent problems . . . . . . . . . .
Undetermined problems . . . . . . . .

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31
31

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31
31
32
33
33
34
35
36
36

Chapter 5. Locations . . . . . . . . . 39
Connectors and indicators . .
Locating FRUs and CRUs . . .
Major FRUs . . . . . .
Other parts . . . . . . .
Connector and cable guide
Looking up FRU information . .

.
.
.
.
.
.

39
41
42
43
43
45

Chapter 6. FRU replacement
notices . . . . . . . . . . . . . . . . . 47
Screw notices . . . . . . . . . . . . . . .
Retaining serial numbers . . . . . . . . . . .

47
48

Chapter 7. Removing or replacing a
FRU. . . . . . . . . . . . . . . . . . . 49
General guidelines. . . . . . . . . . . . .
Before servicing the computer . . . . . . . .
Disabling the built-in battery . . . . . . .
Removing the Integrated Active Pen . . . .
Removing the Nano-SIM-card and microSD
card tray, nano-SIM-card, and microSD
card . . . . . . . . . . . . . . . .
1010 Back cover assembly . . . . . . . . .
1020 Built-in battery . . . . . . . . . . . .
1030 Wireless-LAN module . . . . . . . . .
1040 Wireless-WAN card . . . . . . . . . .
1050 Speaker assembly . . . . . . . . . .
1060 POGO cable . . . . . . . . . . . . .
1070 LCD FPC . . . . . . . . . . . . . .
1080 NFC board, NFC-board cable, and NFC
antenna assembly . . . . . . . . . . . . .
1090 Camera module and camera cable . . . .
1100 Thermal module . . . . . . . . . . .
1110 System board . . . . . . . . . . . .
1120 Fingerprint reader and cable . . . . . .
1130 USB-C connector bracket . . . . . . .
1140 Pen board and cable . . . . . . . . .
1150 LCD panel with antenna kit . . . . . . .
1160 Magnets . . . . . . . . . . . . . .

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49
50
50
50

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50
51
52
53
54
55
56
57

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57
59
60
61
63
65
66
67
68

Appendix A. Notices . . . . . . . . . . 69
Electronic emission notices . . . . . . . . . .
Trademarks . . . . . . . . . . . . . . . .

70
70

Appendix B. Abbreviation and
acronym table . . . . . . . . . . . . . 71

Lenovo Tablet 10 Hardware Maintenance Manual

About this manual
This manual contains service and reference information for the following products.
Machine

Machine type (MT)

Lenovo Tablet 10

20L3 and 20L4

Important:
• This manual is intended only for trained service technicians who are familiar with the products. Use this
manual along with the advanced diagnostic tests to troubleshoot problems effectively.
• Before servicing a product, be sure to read all the information under Chapter 1 “Safety information” on
page 1 and Chapter 2 “Important service information” on page 21.

iii

Lenovo Tablet 10 Hardware Maintenance Manual

Chapter 1. Safety information
This chapter presents following safety information that you should be familiar with before you service a
computer.
• “General safety” on page 1
• “Electrical safety” on page 1
• “Safety inspection guide” on page 3
• “Handling devices that are sensitive to electrostatic discharge” on page 3
• “Grounding requirements” on page 4
• “Safety notices (multilingual translations)” on page 4

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 toolcase 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 nonconductive 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 working in conditions that might be hazardous to your eyes. The
conditions include hammering, drilling, soldering, cutting wire, attaching springs, using solvents, and so
on.
• After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device that
is worn or defective.
• Reinstall other parts that you have removed.

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 disconnect the power cord quickly.
• Do not work alone under hazardous conditions or near equipment that has hazardous voltages.
• Disconnect all power before:
– Performing a mechanical inspection
– Working near power supplies
– Removing or installing main units
• Before you start to work on the machine, disconnect the power cord. If you cannot unplug it, power off the
wall box that supplies power to the machine, and lock the wall box in the off position.
• If you 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,
nongrounded 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
– Motor generators
– Similar units to 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.

Lenovo Tablet 10 Hardware Maintenance Manual

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 CRT face or a bulging capacitor
• Mechanical hazards, such as loose or missing hardware
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. Turn off the computer.
3. Disable the built-in battery. For the instruction on how to disable the built-in battery, see “Disabling the
built-in battery” on page 50.
4. Disconnect the power cord.
5. Check the power cord for the following:
a. Make sure that a third-wire ground connector is in good condition. Use a meter to measure the thirdwire ground continuity. Ensure that the continuity between the external ground pin and the frame
ground is 0.1 ohm or less.
b. The power cord is the type specified in the parts list.
c. Insulation is not frayed or worn.
6. Remove the LCD module assembly.
7. Check for cracked or bulging built-in batteries.
8. Check for any obvious non-Lenovo alterations. Use good judgment as to the safety of any non-Lenovo
alterations.
9. 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.
10. Check for worn, frayed, or pinched cables.
11. Check that the built-in battery 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.

Chapter 1. Safety information

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.

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

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Lenovo Tablet 10 Hardware Maintenance Manual

Chapter 1. Safety information

Lenovo Tablet 10 Hardware Maintenance Manual

Chapter 1. Safety information

Lenovo Tablet 10 Hardware Maintenance Manual

Chapter 2. Important service information
This chapter introduces following important service information that applies to all machine types supported
by this manual:
• “Strategy for replacing FRUs” on page 21
– “Important notice for replacing a system board” on page 21
– “How to use error message” on page 22
• “Strategy for replacing FRUs for CTO, special bid model, and standard models” on page 22
– “Product definition” on page 22
– “FRU identification” on page 22
Important:
• Advise customers to visit the Lenovo® Support Web site at https://support.lenovo.com. The customers can
view the software fixes, download the drivers, and see the instructions for installing the drivers. For
additional assistance, customers might call the Lenovo Customer Support Center. Telephone numbers for
the Lenovo Support Center are available at:
https://pcsupport.lenovo.com/supportphonelist
• Service training documents, for example the videos that show the FRU removals or replacements, are
provided to Lenovo authorized service technicians. The training documents are available at:
https://www.lenovoservicetraining.com/ion/

Strategy for replacing FRUs
Before replacing parts:
Ensure that all software fixes, drivers, and UEFI BIOS downloads are installed before replacing any FRUs
listed in this manual.
After a system board is replaced, ensure that the latest UEFI BIOS is loaded to the system board before
completing the service action.
To download software fixes, drivers, and UEFI BIOS, go to https://support.lenovo.com and follow the
instructions on the screen.
• If you are instructed to replace a FRU but the replacement does not correct the problem, reinstall the
original FRU before you continue.
• Some computers have both a processor board and a system board. If you are instructed to replace either
the processor board or the system board, and replacing one of them does not correct the problem,
reinstall that board, and then replace the other one.
• If an adapter or a device consists of more than one FRU, any of the FRUs may be the cause of the error.
Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change.
Replace only the FRU that changed the symptoms.
Attention: The setup configuration on the computer you are servicing may have been customized. Running
Automatic Configuration may alter the settings. Note the current configuration settings (using the View
Configuration option); then, when service has been completed, verify that those settings remain in effect.

Important notice for replacing a system board
Attention: When handling a system board:
• Do not drop a system board or apply any excessive force to it.

• Avoid rough handling of any kind.
• Avoid bending a system board and hard pushing to prevent cracking at each Ball Grid Array (BGA)
chipset.

How to use error message
Use the error codes displayed on the screen to diagnose failures. If more than one error code is displayed,
begin the diagnosis with the first error code. Whatever causes the first error code may also cause false error
codes. If no error code is displayed, see whether the error symptom is listed in the Symptom-to-FRU Index
for the computer you are servicing.

Strategy for replacing FRUs for CTO, special bid model, and standard
models
This topic provides information about the model types and FRU identification.

Product definition
This topic introduces different model types and how to identify each type.
Dynamic Configure To Order (CTO)
This model provides the ability for a customer to configure a Lenovo solution from a web site, and have this
configuration sent to fulfillment, where it is built and shipped directly to the customer. The machine label and
eSupport will load these products as the 4-character MT, 4-character model and 2-character country code.
The model is “CTO1” and the default country code is “WW” (example: 20AACTO1WW).
Special bid model
This model is a unique configuration that has been negotiated between Lenovo and the customer. A unique
MTM consists of a 4-character MT, a 4-character model, and a numeric 2-character country code is provided
to the customer to place orders (example: 20AA000955). The country code assigned is numeric and does not
designate a specific country or region. The custom model factsheet for the MTM indicates which country the
special bid MTM is set up for. Special bid offering is not generally announced.
Standard model
Standard models (fixed configuration) are announced and offered to all customers. The MTM portion of the
machine label consists of a 4-character MT, a 4-character model, and an alphabetic 2-character country
code. The country code assigned is alphabetic and represents a designated country or region (example:
20AA0009UK).

FRU identification
Use Lenovo eSupport to identify major FRUs, FRU part numbers, and FRU descriptions for a product at an
MT - serial number level. Examples of major FRUs are hard disk drive, system board, and liquid crystal
display (LCD).
To identify the major FRUs for a product, do the following:
1. Go to https://support.lenovo.com/partslookup.
2. Type the Machine Type and Serial Number in the corresponding fields.
3. Tap Submit.
eSupport also can be used to view the general FRU list for a product. The FRU list is a general list of
components and does not contain specific model information.

Lenovo Tablet 10 Hardware Maintenance Manual

To get the general FRU list for a product, do the following:
1. Go to https://support.lenovo.com.
2. Follow the instructions on the screen to select a product.
3. Tap the Product & Parts tab.
4. Select System Service Parts to view a general FRU list.

Chapter 2. Important service information

Lenovo Tablet 10 Hardware Maintenance Manual

Chapter 3. General checkout
This chapter introduces following information:
• “What to do first” on page 25
• “Checkout guide” on page 26
– “Lenovo Companion or Lenovo Vantage” on page 26
– “Quick test programs” on page 26
– “UEFI diagnostic program” on page 27
– “Bootable diagnostic programs” on page 27
• “Power system checkout” on page 28
Before you go to the checkout guide, be sure to read the following important notes.
Important:
• 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, use new nylon-coated screws.
• Be extremely careful during such write operations as copying, saving, or formatting.
• Replace a FRU only with another FRU of the correct model. When you replace a FRU, ensure 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 non-defective FRU.

What to do first
When you do 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. Failing FRU name and part number
6. Machine type, model number, and serial number
7. Customer's name and address
Note: During the warranty period, the customer may be responsible for repair costs if the computer damage
was caused by misuse, accident, modification, unsuitable physical or operating environment, or improper
maintenance by the customer. Following is a list of some common items that are not covered under warranty
and some symptoms that might indicate that the system was subjected to stress beyond normal use.
Before checking problems with the computer, determine whether the damage is covered under the warranty
by referring to the following list:
The following are not covered under warranty:
• LCD panel cracked from the application of excessive force or from being dropped
• Scratched (cosmetic) parts
• Distortion, deformation, or discoloration of the cosmetic parts
• Plastic parts, latches, pins, or connectors that have been cracked or broken by excessive force
• Damage caused by liquid spilled into the system

•
•
•
•
•

Damage caused by the improper insertion of a PC Card or the installation of an incompatible card
Fuses blown by attachment of a nonsupported device
Forgotten computer password (making the computer unusable)
Sticky keys caused by spilling a liquid
Damage caused due to use of an incorrect ac power adapter

The following symptom might indicate damage caused by nonwarranted activities:
• Missing parts might be a symptom of unauthorized service or modification.

Checkout guide
Use the following procedures as a guide in identifying and correcting problems with the computers.
Note: The diagnostic tests are intended to test only Lenovo products. The use of non-Lenovo products,
prototype cards, or modified options can lead to false indications of errors and invalid system responses.
1. Identify the failing symptoms in as much detail as possible.
2. Verify the symptoms. Try to re-create the failure by running the diagnostic test or by repeating the
operation.

Lenovo Companion or Lenovo Vantage
Lenovo Companion or Lenovo Vantage is preinstalled on the computer. Lenovo Companion or Lenovo
Vantage supports the hardware scan function. It combines diagnostic tests, system information collection,
security status, and support information, along with hints and tips for optimal system performance.
To run the Lenovo Companion or Lenovo Vantage program, open the Start menu and click Lenovo
Companion or Lenovo Vantage, and then follow the instructions on the screen.
For additional information, see the help system of the program.

Quick test programs
Run quick test programs to troubleshoot and resolve computer problems, especially when the computer
does not have the Lenovo Companion or Lenovo Vantage program installed.
To download and install a quick test program, go to https://www.lenovo.com/diags, and follow the instructions
on the Web site.
To run a test using a quick test program, do the following:
1. Go to the C:\SWTOOLS\ldiag directory.
2. Double-click the lsc_lite.exe file.
3. When the User Account Control window opens, if any, click Yes.
4. Select the device class to be tested.
5. Select the devices to be tested.
6. Select the test to be performed.
7. Follow the instructions on the screen to start the test. When a problem is detected, information
messages are displayed. Refer to the messages to troubleshoot the problem.

Lenovo Tablet 10 Hardware Maintenance Manual

UEFI diagnostic program
A UEFI diagnostic program might be preinstalled on the computer. It enables you to test memory modules
and internal storage devices, view system information, and check and recover bad sectors on internal
storage devices.
To run the UEFI diagnostic program, do the following:
Note: Before you start, connect your computer to a keyboard. Use the external keyboard to perform the
following operations.
1. Restart the computer. When the logo screen is displayed, repeatedly press and release the F10 key. The
main screen of the UEFI diagnostic program is displayed.
Notes:
• If the computer cannot be turned on, go to “Power system checkout” on page 28, and check the
power sources.
• If an error code is displayed, go to “Symptom-to-FRU index” on page 33 for error code descriptions
and troubleshooting hints.
2. Follow the instructions on the screen to use the diagnostic program.
The options on the main screen are as follows:
Note: The items on the main screen of the UEFI diagnostic program are subject to change.
Table 1. Items on the main screen of the UEFI diagnostic program
Tests
•
•
•
•
•

Quick Memory Test
Quick Storage Device Test
LCD test
PCI-e test
Exit Application

Tools
• System Information
• Generate configuration file
• Execute from configuration file

Bootable diagnostic programs
If the computer you are servicing is not installed with the UEFI diagnostic program, you can download a
bootable diagnostic program from the Lenovo Support Web site. The bootable diagnostic programs enable
you to test computer memory and internal storage devices, view system information, and check and recover
the internal storage devices.
To use the bootable diagnostic programs, you can create a bootable diagnostic medium on a Universal
Serial Bus (USB) device or CD.
To create a bootable diagnostic medium, do the following:
1. Go to https://www.lenovo.com/diags.
2. Tap Lenovo Bootable Diagnostics.
3. Follow the instructions on the Web site to create a bootable diagnostic medium.
To use the diagnostic medium you have created, connect your computer to a thin keyboard first. Then use
the thin keyboard to perform the following operations:
1. Connect the bootable diagnostic medium to the computer.
2. Restart the computer. When the logo screen is displayed, press Enter to display the Startup Interrupt
Menu window.
Chapter 3. General checkout

Notes:
• If the computer cannot be turned on, go to “Power system checkout” on page 28, and check the
power sources.
• If an error code is displayed, go to “Symptom-to-FRU index” on page 33 for error code descriptions
and troubleshooting hints.
3. Press F12 and follow the instructions to start the computer from the bootable diagnostic medium.
4. Follow the instructions on the screen to use the diagnostic program.

Power system checkout
To verify a symptom, do the following:
1. Turn off the computer.
2. Connect the ac power adapter.
3. Turn on the computer. If the computer can be turned on, it means that either the battery or the ac power
adapter is functional.
4. Insert a straightened paper clip into the emergency reset hole to reset the computer. If the computer is
still powered on, it means that the ac power adapter is functional.
5. Turn off the computer.
6. Disconnect the ac power adapter and turn on the computer. If the computer can be turned on, it means
that the battery is functional.
If you suspect a power problem, see the appropriate one of the following power supply checkouts:
•

“Checking the built-in battery” on page 28

•

“Checking the operational charging” on page 29

•

“Checking the ac power adapter” on page 29

Checking the built-in battery
This computer supports only batteries specially designed for this specific system and manufactured by
Lenovo or an authorized builder. The system does not support unauthorized batteries or batteries designed
for other systems. If an unauthorized battery or a battery designed for another system is installed, the system
will not charge.
Attention: Lenovo has no responsibility for the performance or safety of unauthorized batteries, and
provides no warranties for failures or damage arising out of their use.
Tap or click the battery-status icon in the Windows notification area to check the battery status. The batterystatus icon displays the percentage of battery power remaining and how long you can use your computer
before you must charge the battery.
If the computer cannot start, do the following to check whether the built-in battery is failed:
1. Ensure that the computer failure is not caused by exhausted battery power.
2. Reset the computer by inserting a straightened paper clip into the emergency reset hole. Then press the
power button. If the computer cannot be turned on, continue with the next step.
3. Connect the built-in battery and ac power adapter, and then press the power button.
• If the computer can be turned on, disconnect the ac power adapter from the computer. If the
computer turns off, it means that the built-in battery fails.
• If the computer cannot be turned on, replace the built-in battery with another one. If the computer can
be turned on with the new battery installed, it means that the original battery fails.

Lenovo Tablet 10 Hardware Maintenance Manual

Checking the operational charging
To check whether the battery charges properly during operation, do the following:
1. Discharge the battery until the remained battery power is less than 50%.
2. Perform operational charging. Tap or click the battery status icon in the Windows notification area to
display detailed battery information. If it indicates that the battery is not charging, replace the battery.
3. Check the battery status again. If the same error still exists, replace the system board.

Checking the ac power adapter
Lenovo Tablet 10 supports the Lenovo USB-C 45W or 65W AC Adapter and Power Cord. When the adapter
is connected to the computer, the output voltage at the adapter plug rises from 0 V (when not connected) to
5 V. Then the power delivery communication starts. The ac power adapter outputs 20 V according to the
computer output voltage request.
When you use the ac power adapter to charge the computer but no power is charged, see the instructions in
this topic to check the ac power adapter.
Note: Noise from the ac power adapter does not always indicate a defect.
To check the USB-C type ac power adapter, do the following:
1. Connect the computer to a power outlet and turn on the computer.
2. Start the Lenovo Companion program, and then click Hardware Settings ➙ Power. The ac power
adapter information is displayed.
Ensure that you use the USB-C type ac power adapter that is shipped with the computer to provide enough
power to the computer. Otherwise, a message will be displayed, prompting you that the computer will not be
charged or will be charged slowly.
For information about which ac power adapter to order, go to https://support.lenovo.com/partslookup.

Chapter 3. General checkout

Lenovo Tablet 10 Hardware Maintenance Manual

Chapter 4. Related service information
This chapter presents the following information:
• “Windows recovery apps” on page 31
• “Lenovo factory recovery USB key” on page 32
• “Using passwords” on page 33
• “Symptom-to-FRU index” on page 33

Windows recovery apps
The Windows recovery apps enable you to reset your computer or use advanced startup options.
It is recommended that you create a recovery USB drive as early as possible. Store the recovery USB drive
as a backup or replacement for the Windows recovery apps.
For more information, see “Creating and using a recovery USB drive” on page 31.

Resetting your computer
If your computer does not perform well, you might consider resetting your computer. In the resetting
process, you can choose to keep your files or remove them, and then reinstall the Windows operating
system.
To refresh your computer, do the following:
Note: The graphical user interface (GUI) items of the operating system might change without notice.
1. Open the Start menu

. Tap Settings ➙ Update & Security ➙ Recovery.

2. In the Reset this PC section, tap Get started.
3. Follow the instructions on the screen to refresh your computer.

Recovering your operating system if Windows 10 fails to start
The Windows recovery apps on your computer are capable of operating independently from the Windows 10
operating system. This enables you to recover or repair the operating system even if the Windows 10
operating system fails to start.
After two consecutive failed boot attempts, the Windows recovery environment starts automatically. Then
you can choose repair and recovery options by following the instructions on the screen.
Note: Ensure that your computer is connected to ac power during the recovery process.

Creating and using a recovery USB drive
You can create a recovery USB drive as a backup for the Windows recovery apps. With the recovery USB
drive, you can troubleshoot and fix the problems even if the preinstalled Windows recovery apps are
damaged.
Creating a recovery USB drive
The USB drive that you use to create the recovery USB drive must be at least 16 GB of storage. The actual
USB capacity that is required depends on the size of the recovery image.

Attention: The creation process deletes anything stored on the USB drive. To avoid data loss, make a
backup copy of all the data that you want to keep.
To create a recovery USB drive, do the following:
Note: Ensure that your computer is connected to ac power during the following process.
1. Connect a proper USB drive (at least 16 GB of storage).
2. Type recovery in the search box on the taskbar. Then tap Create a recovery drive.
3. Tap Yes in the User Account Control window to allow the Recovery Media Creator app to start.
4. In the Recovery Drive window, follow the on-screen instructions to create a recovery USB drive.
Using the recovery USB drive
If you cannot start your computer, use the recovery USB drive to recover your computer.
To use a recovery USB drive, do the following:
Note: Ensure that your computer is connected to ac power during the following process.
1. Connect the recovery USB drive to the computer.
2. Restart the computer. Tap around “Press Enter or touch here” until the Lenovo Tablet Setup app starts.
3. Tap Startup. In the Boot submenu, drag the recovery drive to the first place to select it as the boot
device.
4. Save configuration changes and restart the computer.
5. Select a corresponding recovery solution according to your situation. Then follow the instructions on the
screen to complete the process.

Lenovo factory recovery USB key
Lenovo factory recovery USB key enables you to reset your computer to the factory default settings.
To obtain a Lenovo factory recovery USB key, contact Lenovo Customer Support Center. Shipping and
handling fees apply. Telephone numbers for the Lenovo Support Center are available at:
https://pcsupport.lenovo.com/supportphonelist
Note: The Lenovo factory recovery USB key might not support certain operating systems. Contact Lenovo
Customer Support Center for more information.
To use the Lenovo factory recovery USB key, do the following:
Note: Ensure that your computer is connected to ac power during the following process.
1. Turn off the computer, wait for about five seconds, and then connect the Lenovo factory recovery USB
key to your computer.
2. Restart the computer. Tap around “Press Enter or touch here” until the Lenovo Tablet Setup app starts..
3. Tap Startup. On the Boot submenu, drag USB CD/DVD or USB HDD to the top to make it the first
startup device.
4. Tap Save, and then tap Yes to save your configuration.
5. Tap Restart and follow the on-screen instructions to restart the computer. After the computer restarts,
the recovery app runs automatically.
6. Follow the on-screen instructions to reset your computer to the factory default settings.

Lenovo Tablet 10 Hardware Maintenance Manual

Using passwords
You can set a supervisor password to prevent your computer from unauthorized use.
The supervisor password protects the system information stored in the Lenovo Tablet Setup program. It
provides the following security features:
• If only a supervisor password is set, a password prompt is displayed when you try to start the Lenovo
Tablet Setup program. Unauthorized users cannot change most of the system configuration options in the
Lenovo Tablet Setup program without the password.
• The system administrator can use the supervisor password to access a computer even if the user of that
computer has set a power-on password. The supervisor password overrides the power-on password.
• The system administrator can set the same supervisor password on many Lenovo computers to make
administration easier.
Attention: If the supervisor password has been forgotten and cannot be made available to the service
technician, there is no service procedure to reset the password. The system board must be replaced for a
scheduled fee.
To set, change, or remove a password:
Note: Before you start, print these instructions and the instructions on “Lenovo Tablet Setup” of the User
Guide. You also can screen-capture the instructions and send the pictures to your smartphone or notebook
computer so that you can view the instructions during operation.
1. Save all open files, and exit all apps.
2. Restart the computer. Tap around “Press Enter or touch here” until the Lenovo Tablet Setup app starts.
3. Tap Security ➙ Password.
4. Tap Enter next to the supervisor password item and follow the instructions on the screen.
5. Save configuration changes and exit.

Symptom-to-FRU index
This section contains following information:
• “Error codes” on page 34
• “Beep errors” on page 35
• “Intermittent problems” on page 36
• “Undetermined problems” on page 36
The symptom-to-FRU index in this section lists symptoms and errors and their possible causes. The most
likely cause is listed first, in boldface type.
Note: Do the FRU replacement or other actions in the sequence shown in the column headed “FRU or
action, in sequence.” If replacing a FRU does not solve the problem, put the original part back in the
computer. Do not replace a nondefective FRU.
This index can also help you determine, during regular servicing, what FRUs are likely to be replaced next.
A numeric error is displayed for each error detected in POST or system operation. In the displays, n can be
any number.
If no numeric code is displayed, check the narrative descriptions of symptoms. If the symptom is not
described there, go to “Intermittent problems” on page 36.

Chapter 4. Related service information

Note: For a device not supported by diagnostic codes in the Lenovo computers, see the manual for that
device.

Error codes
Table 2. Error codes
Symptom or error

FRU or action, in sequence

0177
Bad SVP data, stop POST task—The checksum of the
supervisor password in the EEPROM is not correct.

Replace the system board. Have the computer serviced.

0183
Bad CRC of Security Settings in EFI Variable. Enter
Lenovo Tablet Setup.

Checksum of the Security settings in the EFI Variable is
not correct. Enter Lenovo Tablet Setup to check Security
settings. Press F10, and then press Enter to restart the
system. If your computer still has a problem, have the
computer serviced.

0187
EAIA data access error.

The access to EEPROM is failed. Have the computer
serviced.

0188
Invalid RFID Serialization Information Area.

The EEPROM checksum is not correct (block # 0 and 1).
The system board should be replaced, and the box serial
number should be reinstalled. Have the computer
serviced.

0189
Invalid RFID configuration information area.

The EEPROM checksum is not correct (block # 4 and 5).
The system board should be replaced, and the UUID
should be reinstalled. Have the computer serviced.

0190
Critical low-battery error.

The computer turned off, because the battery is low.
Connect the ac power adapter to the computer and
charge the battery.

0191
System Security—Invalid Remote Change requested.

The system configuration change has failed. Confirm the
operation and try again. To clear the error, enter Lenovo
Tablet Setup.

0199
System Security - Security password retry count
exceeded.

This message is displayed if you enter a wrong supervisor
password more than three times. Confirm the supervisor
password and try again. To clear the error, enter the
Lenovo Tablet Setup.

0270
Real Time Clock Error.

System Real Time Clock is not functional. Have the
computer serviced.

0271
Check Date and Time settings.

Neither the date nor the time is set in the computer. Set
the date and time, using the Lenovo Tablet Setup
program.

1802
Unauthorized network card is plugged in—Turn off and
remove the network card.

The wireless network card is not supported on this
computer. Remove it.

2200
Machine Type and Serial Number are invalid.

Machine Type and Serial Number are invalid. Have the
computer serviced.

2201
Machine UUID is invalid.

Machine UUID is invalid. Have the computer serviced.

Lenovo Tablet 10 Hardware Maintenance Manual

Table 2. Error codes (continued)
Symptom or error

FRU or action, in sequence

Message: Thermal sensing error

The thermal sensor has problem. Shut down the
computer immediately and have the computer serviced.

Message: Error: The System UEFI Variable Storage is
nearly full.
Note:
This error indicates that the operating system or
applications cannot create, modify, or delete data in the
non-volatile system UEFI variable storage due to
insufficient storage space after POST.

Enter Lenovo Tablet Setup after the error message is
displayed. A dialog asks the user for confirmation to clean
up the storage. If the user selects Yes, all data that were
created by the operating system or applications are
deleted except global variables defined by the Unified
Extensible Firmware Interface Specification. If the user
selects No, all data is kept, but the operating system or
applications will not be able to create, modify, or delete
data in the storage.

The non-volatile system UEFI variable storage is used by
the UEFI BIOS and by the operating system or
applications. This error occurs when the operating system
or applications store large amounts of data in the variable
storage. All data needed for POST, such as BIOS setup
settings, chipset or platform configuration data, are
stored in a separate UEFI variable storage.

If this error happens at a service center, Lenovo
authorized service personnel will clean up the non-volatile
system UEFI variable storage using the above solution.

Beep errors
Lenovo SmartBeep technology enables you to decode beep errors with your smartphone when a black
screen occurs with beeps from your computer. To decode the beep error with Lenovo SmartBeep
technology, do the following:
1. Go to https://support.lenovo.com/smartbeep or scan the following QR Code.

2. Download the proper diagnostic app and install it on your smartphone.
3. Run the diagnostic app and place the smartphone near the computer.
4. Press the volume-up button on your computer to emit the beep again. The diagnostic app decodes the
beep error and shows possible solutions on the smartphone.
The following section describes some beep errors and the corresponding solutions.
Note: Do not attempt to service a product yourself unless instructed to do so by the Customer Support
Center or product documentation. Only use a Lenovo-authorized service provider to repair your product.

Chapter 4. Related service information

Error codes
0001: Reset error (platform reset not de-asserted)

Solutions
1. Remove the ac power adapter. If your computer
has a built-in battery, reset the computer by
inserting a straightened paper clip into the
emergency-reset hole. Wait for one minute. Then
reconnect all power resources.
2. Replace the system board (service provider only).

0002: Internal bus error
0281: General embedded controller error
0282: Memory module error
0283: PCI resource error

Replace the system board (service provider only).
Replace the system board (service provider only).
Replace the system board (service provider only).
1. Replace the system board (service provider only).

0284: TCG-compliant functionality-related error (might be
the BIOS code validation failure)

Replace the system board (service provider only).

0285: TCG-compliant functionality-related error (might be
the TPM initialization failure)

Replace the system board (service provider only).

0286: Integrated graphics error
0288: Computer display error

Replace the system board (service provider only).
1. Reconnect the display cable on both the system
board side and the computer display side (service
provider only).
2. Replace the computer display (service provider
only).

Intermittent problems
Intermittent system hang problems can be due to a variety of causes that have nothing to do with a hardware
defect, such as cosmic radiation, electrostatic discharge, or software errors. FRU replacement should be
considered only when a problem recurs.
When analyzing an intermittent problem, do the following:
1. Run the diagnostic test for the system board in loop mode at least 10 times.
2. If no error is detected, do not replace any FRUs.
3. If any error is detected, replace the FRU shown by the FRU code. Rerun the test to verify that no more
errors exist.

Undetermined problems
If the diagnostic tests did not identify the adapter or device that has failed, if wrong devices are installed, or if
the system simply is not operating, follow these procedures to isolate the failing FRU (do not isolate FRUs
that have no defects).
Verify that all attached devices are supported by the computer.
Verify that the power supply being used at the time of the failure is operating correctly. See “Power system
checkout” on page 28.
1. Turn off the computer.

Lenovo Tablet 10 Hardware Maintenance Manual

2. Visually check each FRU for damage. Replace any damaged FRU.
3. Remove or disconnect all of the following devices:
a. Non-Lenovo devices
b. Devices attached to the docking station or the port replicator
c. Printer, mouse, and other external devices
d. Battery
e. External diskette drive or optical drive
f. PC cards
4. Turn on the computer.
5. Determine whether the problem has been solved.
6. If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.
7. If the problem remains, replace the following FRUs one at a time (do not replace a non-defective FRU):
a. System board
b. LCD assembly

Chapter 4. Related service information

Lenovo Tablet 10 Hardware Maintenance Manual

Chapter 5. Locations
This chapter introduces the locations of the hardware components on your computer.

Connectors and indicators

Note: The connectors and indicators shown with an asterisk (*) are available on some models.
1 Power button: Press the power button to turn on your computer. You also can use the power button to
put the computer to sleep and wake it.
2 Emergency-reset hole: If your computer stops responding, remove the ac power adapter first, and then
insert a straightened paper clip into the emergency-reset hole to reset the computer.
3 Front camera and 4 Camera-status indicator: Use the 2-megapixel front-facing camera to take photos
and make videos. When the camera is on, the camera-status indicator turns on.
5

Microphones: Use the microphones to make calls and recordings.

6 Fingerprint reader*: Use the fingerprint reader to log in to your computer instead of entering the
password.
7

Volume-control buttons: Use these buttons to turn up or turn down the volume of the computer.

8 USB 3.1 connector Gen 1: Connect USB-compatible devices, such as a USB keyboard, USB mouse, or
USB storage device.
9

Audio connector: Connect headphones or a headset to listen to the sound from the computer.

10 Nano-SIM-card and microSD card tray: Use the microSD card (sold separately) to transfer or store files.
Use the nano Subscriber Identity Module (SIM) card * to connect to a mobile broadband network.

11 HDMI™ connector: The High-Definition Multimedia Interface (HDMI) connector is a digital audio and
video interface. It enables you to connect your computer to a compatible digital audio device or video
monitor, such as a high-definition television (HDTV).
12 ac power status indicator: The ac power status indicator turns on white when the computer is
connected to ac power.
13 USB-C™ connector: Use the USB-C connector to charge your computer and connect to a compatible
device to transfer data. Lenovo provides various USB-C accessories to help you expand your computer
functionality. For more information, go to:

http://www.lenovo.com/essentials

Note: When the battery power is below 10%, the USB-C accessories connected to the USB-C connector
might not work correctly.
14

Stereo speakers: The stereo speakers provide an immersive music and movie playback experience.

Fixing holes: Use the fixing holes to attach a supported keyboard and fix it in place.

Pogo interface connector: Use this connector to attach a supported keyboard.

17 Mini security-lock slot: To protect your computer from theft, lock your computer to a desk, table, or
other fixtures through a security cable lock designed to fit the mini security-lock slot on your computer.

Note: The slot supports cable locks that conform to the Kensington MiniSaver® lock standards using
Cleat™ locking technology. Do not attempt to use other types of cable locks that use a rotating T-bar™
locking mechanism. You are responsible for evaluating, selecting, and implementing the locking device and
security feature. Lenovo makes no comments, judgments, or warranties about the function, quality, or
performance of the locking device and security feature. Cable locks for your product are available from
Lenovo at http://www.lenovo.com/essentials.

Rear camera: Use the 5-megapixel, high-resolution, rear-facing camera to take photos and make videos.

Integrated Active Pen*: Your computer might be equipped with an Integrated Active Pen.

3 NFC mark*: Near field communication (NFC) enables you to transfer data from one device to another by
touching them or putting them close together.

Lenovo Tablet 10 Hardware Maintenance Manual

Locating FRUs and CRUs
This topic introduces the following service parts:
• “Major FRUs” on page 42
• “Other parts” on page 43
Notes:
• FRUs refer to parts that must be installed or replaced only by trained service technicians. If customers choose to
replace the FRUs by themselves, the product warranty might be affected.
• Each FRU is available for all types or models, unless otherwise specified.
• FRUs marked with OP are available as options.
• CRU statement for customers:
You can resolve some problems with your product with a replacement part you can install yourself, called a
“Customer Replaceable Unit” or “CRU.” Some CRUs are designated as self-service CRUs and others are
designated as optional-service CRUs. Installation of self-service CRUs is your responsibility. For optional-service
CRUs, you can either install the CRU yourself or you can request that a Service Provider install the CRU according to
the warranty service for your product. If you intend on installing the CRU, Lenovo will ship the CRU to you. CRU
information and replacement instructions are shipped with your product and are available from Lenovo at any time
upon request. You can find a list of CRUs for your product in this Hardware Maintenance Manual. An electronic
version of this manual can be found at https://support.lenovo.com. Tap Guides & Manuals and then follow the onscreen instructions to find the manual for your product. You might be required to return the defective part that is
replaced by the CRU. When return is required: (1) return instructions, a prepaid shipping label, and a container will
be included with the replacement CRU; and (2) you might be charged for the replacement CRU if Lenovo does not
receive the defective CRU within thirty (30) days of your receipt of the replacement CRU. See your Lenovo Limited
Warranty documentation for full details.
Lenovo computers contain the following types of CRUs:
Self-service CRUs: Refer to parts that can be installed or replaced easily by customer themselves or by trained
service technicians at an additional cost.
Optional-service CRUs: Refer to parts that can be installed or replaced by customers with a greater skill level.
Trained service technicians can also provide service to install or replace the parts under the type of warranty
designated for the customer’s machine.

Chapter 5. Locations

Major FRUs

No.

FRU

Self-service CRU

Optional-service CRU

LCD panel

Fingerprint reader

Fingerprint reader cable

System board

Thermal fan

Lenovo Tablet 10 Hardware Maintenance Manual

No.

FRU

Self-service CRU

Optional-service CRU

Speaker assembly

USB-C bracket

Wireless-LAN card

Wireless-WAN card *

Nano-SIM-card and microSD card tray

Base cover assembly

Magnets

Built-in battery

Pen board

Pen board cable

Pogo cable

NFC board

NFC antenna

NFC cable

Front camera

Rear camera

Camera cable

LCD FPC

ac power adapter

Yes

Power cord

Yes

Lenovo factory recovery USB key

Yes

Miscellaneous parts kits

*Available

on some models
Note: The Lenovo factory recovery USB key c is used to restore the Microsoft Windows operating system. It might
not come with the computer, and a user might order it from https://pcsupport.lenovo.com/lenovorecovery, though
additional shipping and handling fees might apply.

Other parts
Table 3. Other parts
Descriptions
Active Pen *
Lenovo Tablet 10 Keyboard
*

Self-service CRU

Optional-service CRU

Yes

Available on some models

Connector and cable guide
This topic provides information to help Lenovo authorized service technicians identify connectors and cables
for replacement purpose. To view each FRU and the exploded illustration of the computer, see “Major FRUs”
on page 42.

Chapter 5. Locations

Note: Depending on your computer model, some connectors or cables might not be available.
System board connectors and cables

Table 4. System board connector and cable guide
Item

Internal cable required

Connector (location)

Cable connection

Fingerprint-reader connector
(internal)

Fingerprint-reader cable

The fingerprint-reader comes with
a cable. Connect the cable to this
connector.

Wireless-WAN card slot (internal)

Insert the wireless-WAN card into
this slot.

Built-in battery connector (internal)

Built-in battery cable

The built-in battery comes with a
cable. Connect the cable to this
connector.

Camera module connector
(internal)

Camera module cable

The camera module comes with a
cable. Connect the cable to this
connector.

NFC board connector (internal)

NFC-card cable

Connect one end to the NFC
board and the other end to this
connector.

LCD connector (internal)

LCD FPC

Connect one end of the LCD FPC
to this connector.

POGO connector (internal)

POGO cable

The POGO connector comes with
a cable. Connect the cable to this
connector.

Pen connector (internal)

Pen cable

Connect one end of the pen cable
to this connector. Connect the
other end of the pen cable to the
pen board.

Touch panel connector (internal)

Touch panel cable

Connect the touch panel cable to
this connector.

Lenovo Tablet 10 Hardware Maintenance Manual

Table 4. System board connector and cable guide (continued)
Item

Internal cable required

Connector (location)

Cable connection

Speaker connector (internal)

Speaker assembly cable

The speaker assembly comes with
a cable. Connect the cable to this
connector.

Wireless-LAN card slot (internal)

Wireless-LAN antenna assembly

Insert the wireless-LAN card into
this slot.

USB-C connector (external)

Connect an HDMI-compatible
audio device or video monitor, a
video graphics array (VGA) monitor
or other VGA-compatible video
device, or an ac power adapter to
this connector by using a USB-C
dongle or docking device. Or,
connect an ac power adapter
directly to this connector.

HDMI connector (external)

Connect your computer to a
compatible digital audio device or
video monitor, such as a highdefinition television (HDTV).

Nano-SIM-card and microSD card
slot (external)

Insert a tray with a microSD card
to this slot to transfer or store files.
If the computer supports wireless
WAN, insert a tray with a nano
Subscriber Identification Module
(SIM) card into this slot to establish
wireless-WAN connections.

Audio connector (external)

Connect headphones or a headset
to listen to the sound from the
computer.

USB 3.1 connector Gen 1
(external)

Connect USB-compatible devices,
such as a USB keyboard, USB
mouse, or USB storage device.

Looking up FRU information
For detailed FRU information, including part numbers, descriptions, and substitution part numbers, go to
https://support.lenovo.com/partslookup.

Chapter 5. Locations

Lenovo Tablet 10 Hardware Maintenance Manual

Chapter 6. FRU replacement notices
This chapter presents notices related to removing and replacing parts. Read this chapter carefully before
replacing any FRU.
CRU statement for customers:
You can resolve some problems with your product with a replacement part you can install yourself, called a
“Customer Replaceable Unit” or “CRU.” Some CRUs are designated as self-service CRUs and others are
designated as optional-service CRUs. Installation of self-service CRUs is your responsibility. For optionalservice CRUs, you can either install the CRU yourself or you can request that a Service Provider install the
CRU according to the warranty service for your product. If you intend on installing the CRU, Lenovo will ship
the CRU to you. CRU information and replacement instructions are shipped with your product and are
available from Lenovo at any time upon request. You can find a list of CRUs for your product in this Hardware
Maintenance Manual. An electronic version of this manual can be found at https://support.lenovo.com. Tap
Guides & Manuals and then follow the on-screen instructions to find the manual for your product. You might
be required to return the defective part that is replaced by the CRU. When return is required: (1) return
instructions, a prepaid shipping label, and a container will be included with the replacement CRU; and (2) you
might be charged for the replacement CRU if Lenovo does not receive the defective CRU within thirty (30)
days of your receipt of the replacement CRU. See your Lenovo Limited Warranty documentation for full
details.

Screw notices
Loose screws can cause a reliability problem. In the Lenovo computer, this problem is addressed with
special nylon-coated screws that have the following characteristics:
• They maintain tight connections.
• They do not easily come loose, even with shock or vibration.
• They are harder to tighten.
Do the following when you service this machine:
• Keep the screw kit in your tool bag. For the part number of the screw kit, go to https://support.lenovo.com/
partslookup.
• It is recommended to use new screws.
• It is recommended to use each screw only once.
Tighten screws as follows:
• Plastic to plastic
Turn an additional 90 degrees after the screw head touches the surface of the plastic part.

• Logic card to plastic
Turn an additional 180 degrees after the screw head touches the surface of the logic card.

Notes:
• Ensure that you use the correct screw. It is recommended to use new screws for replacements. If you
have a torque screwdriver, tighten all screws firmly to the torque specified in the screw information table
for each step.
• Ensure that torque screwdrivers are calibrated correctly following country specifications.

Retaining serial numbers
Instructions for retaining serial numbers, MTM, UUID, or asset ID can be found from the Lenovo Support
Web site at:
https://support.lenovo.com

Lenovo Tablet 10 Hardware Maintenance Manual

Chapter 7. Removing or replacing a FRU
This chapter provides instructions on how to remove or replace a FRU.
CRU statement for customers:
You can resolve some problems with your product with a replacement part you can install yourself, called a
“Customer Replaceable Unit” or “CRU.” Some CRUs are designated as self-service CRUs and others are
designated as optional-service CRUs. Installation of self-service CRUs is your responsibility. For optionalservice CRUs, you can either install the CRU yourself or you can request that a Service Provider install the
CRU according to the warranty service for your product. If you intend on installing the CRU, Lenovo will ship
the CRU to you. CRU information and replacement instructions are shipped with your product and are
available from Lenovo at any time upon request. You can find a list of CRUs for your product in this Hardware
Maintenance Manual. An electronic version of this manual is available for downloading at https://
support.lenovo.com. You might be required to return the defective CRU. When return is required: (1) return
instructions, a prepaid shipping label, and a container will be included with the replacement CRU; and (2) you
might be charged for the replacement CRU if Lenovo does not receive the defective part within thirty (30)
days of your receipt of the replacement CRU. See your Lenovo Limited Warranty documentation for full
details.

General guidelines
When removing or replacing a FRU, be sure to 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. Before replacing any FRU, review Chapter 6 “FRU replacement notices” on page 47.
3. Begin by removing any FRUs that have to be removed before replacing the failing FRU. Any such FRUs
are listed at the beginning of in each FRU replacement section. Remove them in the order in which they
are listed.
4. Follow the correct sequence in the steps for removing a FRU, as given in the drawings by the numbers in
square callouts.
5. When turning a screw, turn it in the direction as given by the arrow in the drawing.
6. When removing a FRU, remove it in the direction as given by the arrow in the drawing.
7. To put the new FRU in place, reverse the removal procedure and follow any notes that pertain to
replacement.
8. When replacing a FRU, use the correct screws as shown in the replacement procedures.

DANGER
Before removing any FRU, turn off the computer, unplug all power cords from electrical outlets,
remove the pack, and then disconnect any interconnecting cables.
Attention: After replacing a FRU, do not turn on the computer until you have made sure 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, electrostatic discharge(ESD). Before
touching it, establish personal grounding by touching a ground point with one hand or by using an ESD strap.

Before servicing the computer
Before you service this computer, do the following:
1. Disable the built-in battery. See “Disabling the built-in battery” on page 50.
2. Remove the nano-SIM-card and microSD card. See “Removing the Nano-SIM-card and microSD card
tray, nano-SIM-card, and microSD card” on page 50.

Disabling the built-in battery
Before replacing any FRU, ensure that you disable Fast Startup first and then disable the built-in battery.
To disable Fast Startup, do the following:
1. Go to Control Panel, and then change the view of Control Panel from Category to Large icons or Small
icons.
2. Click Power Options, and then click Change what the power buttons do on the left pane.
3. Click Change settings that are currently unavailable at the top.
4. If prompted by User Account Control (UAC), click Yes.
5. Clear the Turn on fast startup check box, and then click Save changes.
To disable the built-in battery, do the following:
1. Restart your computer. When the logo screen is displayed, immediately press F1 to enter Lenovo Tablet
Setup.
2. Select Config ➙ Power. The Power submenu is displayed.
3. Select Disable built-in battery and press Enter.
4. Select Yes in the Setup Confirmation window. The built-in battery is disabled and the computer turns off
automatically. Wait three to five minutes to let the computer cool.

Removing the Integrated Active Pen
Remove the Integrated Active Pen (the pen) before you service the computer:
Removal step of the pen

Removing the Nano-SIM-card and microSD card tray, nano-SIM-card,
and microSD card
Remove the following items before you service the computer:
• Nano-SIM-card and microSD card tray

Lenovo Tablet 10 Hardware Maintenance Manual

• Nano-SIM-card (on some models)
• MicroSD card (on some models)
Removal steps of the nano-SIM-card

Removal steps of the microSD card

1010 Back cover assembly
Before you replace the back cover assembly, do the following:
Removal steps of the back cover assembly
Note: The computer you are servicing might look slightly different from the following illustrations.

Chapter 7. Removing or replacing a FRU

1020 Built-in battery
Before you replace the built-in battery, do the following:
1. Disable the built-in battery. See “Disabling the built-in battery” on page 50.
2. Remove the Nano-SIM-card and microSD card tray, nano-SIM-card, and microSD card. See “Removing
the Nano-SIM-card and microSD card tray, nano-SIM-card, and microSD card” on page 50.
3. Remove the base cover assembly, see “1010 Back cover assembly ” on page 51.
Removal steps of the built-in battery
DANGER
Use only the authorized battery specified for your computer. Any other battery could ignite or
explode.

Lenovo Tablet 10 Hardware Maintenance Manual

Step

Screw (quantity)

Color

Torque

M1.6 × L3.5 mm, flat-head, nylon-coated (5)

Black

0.098 Nm
(1 kgf-cm)

1030 Wireless-LAN module
For access, remove these FRUs in order:
• “1010 Back cover assembly ” on page 51
• “1020 Built-in battery” on page 52

Chapter 7. Removing or replacing a FRU

Removal steps of the Wireless-LAN module

Step

Screw (quantity)

Color

Torque

M2 × 2.5 mm, flat-head, nylon-coated (1)

Black

0.147 Nm
(1.5 kgf-cm)

When installing:
Plug the gray cable into the connector labeled MAIN or 2 on the card, and plug the black cable into the
connector labeled AUX or 1 on the card.

1040 Wireless-WAN card
For access, remove the following FRUs:
•

“1010 Back cover assembly ” on page 51

•

“1020 Built-in battery” on page 52

Removal steps of the wireless-WAN card
The wireless-WAN card is only available on some models.

Lenovo Tablet 10 Hardware Maintenance Manual

Step

Screw (quantity)

Color

Torque

M2 × 2.5 mm, flat-head, nylon-coated (1)

Black

0.147 Nm
(1.5 kgf-cm)

When installing: Plug the red cable into the main connector, and the blue cable into the auxiliary connector
on the card. Ensure that the connectors are attached firmly.

1050 Speaker assembly
For access, remove these FRUs in order:
• “1010 Back cover assembly ” on page 51
• “1020 Built-in battery” on page 52
Removal steps of the speaker assembly

When installing: Ensure that the connector is attached firmly.

Chapter 7. Removing or replacing a FRU

Attention: When installing the speaker assembly, route the cable as shown in the following illustration.
Ensure that the cable is not twisted or subject to any tension. Tension could cause the cable to be damaged
by cable guides.

1060 POGO cable
For access, remove the following FRU:
•

“1010 Back cover assembly ” on page 51

Lenovo Tablet 10 Hardware Maintenance Manual

Removal steps of the POGO cable

Step

Screw (quantity)

Color

Torque

M1.6 × L3.5 mm, flat-head, nylon-coated (2)

Black

0.098 Nm
(1 kgf-cm)

Note: When connecting the cable, ensure that the connector is attached firmly.

1070 LCD FPC
For access, remove the following FRU:
• “1010 Back cover assembly ” on page 51
Removal steps of the LCD FPC
Note: When connecting the cable, ensure that the connector is attached firmly.

1080 NFC board, NFC-board cable, and NFC antenna assembly
For access, remove these FRUr:
• “1010 Back cover assembly ” on page 51

Chapter 7. Removing or replacing a FRU

Removal steps of the NFC-boardcable
Notes:
• The NFC board, NFC-board cable, and NFC antenna assembly are only available on some models.
• When connecting the cables, ensure that the connectors are attached firmly.

Removal steps of the NFC board and the NFC antenna assembly

Lenovo Tablet 10 Hardware Maintenance Manual

1090 Camera module and camera cable
For access, remove the following FRU:
• “1010 Back cover assembly ” on page 51
Removal steps of the rear-camera module and camera cable

When installing: Ensure that the connector is attached firmly.

Chapter 7. Removing or replacing a FRU

Step

Screw (quantity)

Color

Torque

M1.6 × 3.5 mm, flat-head, nylon-coated (1)

Black

0.098 Nm
(1 kgf-cm)

Removal step of the front-camera module

1100 Thermal module
For access, remove the following FRU:
• “1010 Back cover assembly ” on page 51

Lenovo Tablet 10 Hardware Maintenance Manual

Removal steps of the thermal module
Loosen the screws 1a to 1c in ascending alphabetical order as shown in the following illustration.

When installing: Before you install the thermal module, apply 0.2-gram thermal grease on part a as shown
in the following illustration. Either too much or too less application of grease can cause a thermal problem
due to imperfect contact with a component.

1110 System board
For access, remove these FRUs in order:
• “1010 Back cover assembly ” on page 51
• “1020 Built-in battery” on page 52
Attention: The microprocessor a soldered on the system board are extremely sensitive. When you service
the system board, avoid any kind of rough handling.

Chapter 7. Removing or replacing a FRU

Removal steps of the system board
CAUTION:
When handling the system board, read the following:
• The system board has an accelerometer, which can be broken when several thousands of G-forces
are applied.
• Be careful not to drop the system board on a bench top that has a hard surface, such as metal,
wood, or composite.
• Avoid rough handling of any kind.
• At every point in the process, be sure not to drop or stack the system board.
• If you put a system board down, be sure to put it only on a padded surface such as an ESD mat or a
corrugated conductive material.
Note: When connecting the cables, ensure that the connectors are attached firmly.

Step

Screw (quantity)

Color

Torque

M1.6 × 1.5 mm, flat-head, nylon-coated (6)

Silver

0.098 Nm
(1. kgf-cm)

Lenovo Tablet 10 Hardware Maintenance Manual

After the system board is replaced with a new one, do the following:
• Initialize the settings on the new system board by doing the following:
1. Restart the computer. When the logo screen is displayed, tap To interrupt normal startup, press
Enter or tap here on the screen.
2. Tap F1 on the screen to start the Lenovo Tablet Setup program.
3. Tap Restart ➙ Load Setup Defaults.
4. A confirmation message is displayed. Tap Yes to load the default configuration.
• Reset the NVRAM (Non-Volatile Random Access Memory). To download the tool and the instruction, do
the following:
1. Go to https://support.lenovo.com/documents/HT104297 and then follow the instructions on the screen.
Note: Service account and password are required for downloading the tool and the instruction.
2. Locate the NVRAM update tool, then download the tool and the instruction.

1120 Fingerprint reader and cable
For access, remove these FRUs in order:
• “1010 Back cover assembly ” on page 51
• “1020 Built-in battery” on page 52
Removal steps of the fingerprint reader and cable
Note: When connecting the cable, ensure that the connector is attached firmly.

Chapter 7. Removing or replacing a FRU

Step

Screw (quantity)

Color

Torque

M1.6 × L1.5 mm, flat-head, nylon-coated (1)

Black

0.098 Nm
(1 kgf-cm)

Lenovo Tablet 10 Hardware Maintenance Manual

1130 USB-C connector bracket
For access, remove these FRUs in order:
• “1010 Back cover assembly ” on page 51
• “1020 Built-in battery” on page 52
• “1110 System board” on page 61
Removal step of the USB-C connector bracket

Chapter 7. Removing or replacing a FRU

1140 Pen board and cable
For access, remove these FRUs in order:
• “1010 Back cover assembly ” on page 51
• “1020 Built-in battery” on page 52
Removal steps of the pen board and cable
Note: When connecting the cable, ensure that the connector is attached firmly.

Lenovo Tablet 10 Hardware Maintenance Manual

1150 LCD panel with antenna kit
For access, remove these FRUs in order:
• “1010 Back cover assembly ” on page 51
• “1020 Built-in battery” on page 52
• “1030 Wireless-LAN module” on page 53
• “1040 Wireless-WAN card” on page 54
• “1050 Speaker assembly” on page 55
• “1060 POGO cable” on page 56
• “1070 LCD FPC” on page 57
• “1080 NFC board, NFC-board cable, and NFC antenna assembly” on page 57
• “1090 Camera module and camera cable” on page 59
• “1100 Thermal module” on page 60
• “1110 System board” on page 61
• “1120 Fingerprint reader and cable” on page 63
• “1130 USB-C connector bracket” on page 65
• “1140 Pen board and cable” on page 66
Note: The wireless-WAN antenna assembly is only available on some models.

Chapter 7. Removing or replacing a FRU

Wireless-WAN antenna (Auxiliary)*
b Wireless-WAN antenna (Main)*
c Wireless-LAN antenna (Auxiliary)
d Wireless-LAN antenna (Main)
a

*Available

on some models

1160 Magnets
For access, remove the following FRU:
• “1010 Back cover assembly ” on page 51
Removal step of the magnets

Lenovo Tablet 10 Hardware Maintenance Manual

Appendix A. Notices
Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult
your local Lenovo representative for information on the products and services currently available in your
area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that
Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service
that does not infringe any Lenovo intellectual property right may be used instead. However, it is the user's
responsibility to evaluate and verify the operation of any other product, program, or service.
Lenovo may have patents or pending patent applications covering subject matter described in this
document. The furnishing of this document does not give you any license to these patents. You can send
license inquiries, in writing, to:
Lenovo (United States), Inc.
1009 Think Place - Building One
Morrisville, NC 27560
U.S.A.
Attention: Lenovo Director of Licensing
LENOVO PROVIDES THIS PUBLICATION “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF NON-INFRINGEMENT,
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do not allow
disclaimer of express or implied warranties in certain transactions, therefore, this statement may not apply to
you.
This information could include technical inaccuracies or typographical errors. Changes are periodically made
to the information herein; these changes will be incorporated in new editions of the publication. Lenovo may
make improvements and/or changes in the product(s) and/or the program(s) described in this publication at
any time without notice.
The products described in this document are not intended for use in implantation or other life support
applications where malfunction may result in injury or death to persons. The information contained in this
document does not affect or change Lenovo product specifications or warranties. Nothing in this document
shall operate as an express or implied license or indemnity under the intellectual property rights of Lenovo or
third parties. All information contained in this document was obtained in specific environments and is
presented as an illustration. The result obtained in other operating environments may vary.
Lenovo may use or distribute any of the information you supply in any way it believes appropriate without
incurring any obligation to you.
Any references in this publication to non-Lenovo Web sites are provided for convenience only and do not in
any manner serve as an endorsement of those Web sites. The materials at those Web sites are not part of the
materials for this Lenovo product, and use of those Web sites is at your own risk.
Any performance data contained herein was determined in a controlled environment. Therefore, the result
obtained in other operating environments may vary significantly. Some measurements may have been made
on development-level systems and there is no guarantee that these measurements will be the same on
generally available systems. Furthermore, some measurements may have been estimated through
extrapolation. Actual results may vary. Users of this document should verify the applicable data for their
specific environment.

Electronic emission notices
For electronic emission information on Class B digital devices, refer to the corresponding information in the
User Guide.

Trademarks
The following terms are trademarks of Lenovo in the United States, other countries or both:
Lenovo
Lenovo logo
Thunderbolt is a trademark of Intel Corporation or its subsidiaries in the U.S. and/or other countries.
Microsoft and Windows are trademarks of the Microsoft group of companies.
The terms HDMI and HDMI High-Definition Multimedia Interface are trademarks or registered trademarks of
HDMI Licensing LLC in the United States and other countries.
USB-C is a trademark of USB Implementers Forum.
Other company, product, or service names may be trademarks or service marks of others.

Lenovo Tablet 10 Hardware Maintenance Manual

Appendix B. Abbreviation and acronym table
The following table lists all abbreviations and acronyms which might be used in this manual.
Abbreviation

Term

fourth generation of mobile telecommunications technology

BGA

Ball Grid Array

BIOS

basic input/output system

CMOS

complementary metal-oxide semiconductor

COA

Certificate of Authentication

CRC

cyclic redundancy check

CRT

cathode ray tube

CRU

customer-replaceable unit

CTO

Configure To Order

EAIA

Enhanced Asset Information Area

ECA

Engineering Change Announcements

EEPROM

Electrically Erasable Programmable Read-Only Memory

EFI

Extensible Firmware Interface

EPO

emergency power-off

ESD

electrostatic discharge

European Union

FCC

Federal Communications Commission

FRU

Field Replaceable Unit

GAV

General Announce Variant

GPU

graphics processing unit

HDD

hard disk drive

HDMI

high-definition multimedia interface

ICs

integrated circuits

ICCID

integrate circuit card identity

ISO

International Standardization Organization

LAN

local area network

LCD

liquid crystal display

MAC

media access control

machine type

MTM

machine type and model

personal computer

PCH

Platform Controller Hub

Abbreviation

Term

POST

power-on self-test

RAM

random-access memory

radio frequency

RFID

radio-frequency identification

ring indicator

registered jack

SATA

Serial Advanced Technology Attachment

SIM

subscriber identity module

SVP

supervisor password

TFTs

thin-film transistors

UEFI

Unified Extensible Firmware Interface

USB

Universal Serial Bus

UUID

universally unique identifier

VGA

video graphics array

VRAM

video random-access memory

Lenovo Tablet 10 Hardware Maintenance Manual

Part Number: SP40M12229

Printed in China

(1P) P/N: SP40M12229

*1PSP40M12229*

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