Lenovo T550 W550S Hmm En Sp40G55010 02 User Manual (English) Hardware Maintenance Think Pad T550, Laptop (Think Pad)

2015-02-24

User Manual: Lenovo T550 W550S Hmm En Sp40G55010 02 (English) Hardware Maintenance Manual - ThinkPad T550, W550s W550s Laptop (ThinkPad) ThinkPad W550s

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Hardware Maintenance Manual

ThinkPad T550 and W550s

Note: Before using this information and the product it supports, be sure to read the general information
under Appendix A “Notices” on page 105.

Third Edition (July 2015)
© Copyright Lenovo 2015.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant a General Services Administration
“GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-35F-05925.

Contents
About this manual. . . . . . . . . . .

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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) . . . . .

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

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Chapter 5. Locations . . . . . . . . .

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Chapter 6. FRU replacement
notices . . . . . . . . . . . . . . . .

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Chapter 4. Related service
information . . . . . . . . . . . . . .
Restoring the factory contents by using the
product Recovery Disc Set . . . . . . . . . .
Using the Windows recovery programs on the
Windows 8.1 operating system . . . . . . . .
Recovery overview for the Windows 10 operating
system . . . . . . . . . . . . . . . . . .
Resetting your computer . . . . . . . . .
Using advanced startup options . . . . . .
Recovering your operating system if Windows
10 fails to start . . . . . . . . . . . . .
Creating and using a recovery USB drive . .

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Locating computer controls, connectors,
indicators. . . . . . . . . . . . .
Front view. . . . . . . . . . .
Left-side view . . . . . . . . .
Bottom view . . . . . . . . . .
Locating FRUs and CRUs . . . . . .
Major FRUs . . . . . . . . . .
LCD FRUs . . . . . . . . . .
Miscellaneous parts and other FRUs
Looking up FRU information . . . . .

Chapter 3. General checkout . . . . .
What to do first . . . . . . . . . . .
Checkout guide . . . . . . . . . . .
Lenovo Solution Center . . . . . .
Quick test programs. . . . . . . .
UEFI diagnostic program . . . . . .
Bootable diagnostic programs. . . .
Power system checkout . . . . . . . .
Checking the ac power adapter . . .
Checking the battery and operational
charging . . . . . . . . . . . .
Checking the coin-cell battery . . . .

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Passwords . . . . . . . . . . . . . .
Power-on password . . . . . . . . .
Hard disk password . . . . . . . . .
Supervisor password . . . . . . . .
How to remove the power-on password .
How to remove the hard disk password .
Power management . . . . . . . . . .
Screen blank mode (for the Windows 7
operating system only) . . . . . . . .
Sleep mode . . . . . . . . . . . .
Hibernation mode . . . . . . . . .
Symptom-to-FRU index . . . . . . . . .
Numeric error codes . . . . . . . .
Error messages . . . . . . . . . .
Beep symptoms . . . . . . . . . .
No-beep symptoms . . . . . . . . .
LCD-related symptoms . . . . . . .
Intermittent problems . . . . . . . .
Undetermined problems . . . . . . .

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Common service tools . . . . . . . . . .
Screw notices . . . . . . . . . . . . . .
Retaining serial numbers. . . . . . . . . .
Restoring the serial number of the system
unit . . . . . . . . . . . . . . . .
Retaining the UUID . . . . . . . . . .
Reading or writing the ECA information . .

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Chapter 7. Removing or replacing a
FRU . . . . . . . . . . . . . . . . . .

General guidelines . . . . . . . . . . . . .
Before servicing the computer . . . . . . . .
Disabling the built-in battery . . . . . . .

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Removing the micro SIM card . . . . . . .
Removing a major FRU . . . . . . . . . . .
1010 Removable battery . . . . . . . . .
1020 Base cover assembly . . . . . . . .
1030 Keyboard. . . . . . . . . . . . .
1040 Storage-drive stabilizer bar, internal
storage drive, hard disk drive cable, and hard
disk drive bracket. . . . . . . . . . . .
1050 Memory module . . . . . . . . . .
1060 Wireless LAN card . . . . . . . . .
1070 Wireless WAN card . . . . . . . . .
1080 M.2 solid-state drive . . . . . . . .
1090 Coin-cell battery . . . . . . . . . .
1110 dc-in bracket and dc-in cable
assembly . . . . . . . . . . . . . . .
1120 Built-in battery or dummy battery . . .
1130 Thermal fan . . . . . . . . . . . .
1140 Speaker assembly . . . . . . . . .
1150 Smart card assembly or dummy smart
card . . . . . . . . . . . . . . . . .
1160 Fingerprint reader assembly . . . . .
1170 Board for the trackpad and TrackPoint
buttons . . . . . . . . . . . . . . . .
1180 System board assembly . . . . . . .
1190 LCD unit . . . . . . . . . . . . .

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1210 Power button board . . . . . . .
1220 Keyboard assembly. . . . . . . .
Removing an LCD FRU for models without touch
panel . . . . . . . . . . . . . . . . .
2010 LCD bezel assembly . . . . . . .
2020 LCD panel and LCD cable . . . . .
2030 Hinges and hinge brackets . . . . .
2040 Camera/microphone card . . . . .
2050 LED cable assembly . . . . . . .
2060 Antenna kit and LCD rear cover
assembly . . . . . . . . . . . . . .
Removing an LCD FRU for models with touch
panel . . . . . . . . . . . . . . . . .
3010 LCD front sheet bezel . . . . . . .
3020 LCD panel assembly and LCD cable .
3030 Hinges . . . . . . . . . . . . .
3040 Camera/microphone card . . . . .
3050 Touch sensor card . . . . . . . .
3060 LED cable assembly . . . . . . .
3070 Antenna kit and LCD rear cover
assembly . . . . . . . . . . . . . .

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Appendix A. Notices . . . . . . . . .
Electronic emissions notices . . . . . . . . .
Trademarks . . . . . . . . . . . . . . . .

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About this manual
This manual contains service and reference information for the following ThinkPad® products.
ThinkPad T550

Machine types (MT): 20CJ and 20CK

ThinkPad W550s

MT: 20E1 and 20E2

Use this manual along with the advanced diagnostic tests to troubleshoot problems.
Important: This manual is intended only for trained service technicians who are familiar with ThinkPad
products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively.
Before servicing a ThinkPad product, be sure to read all the information under Chapter 1 “Safety information”
on page 1 and Chapter 2 “Important service information” on page 19.

iii

Hardware Maintenance Manual

Chapter 1. Safety information
This chapter presents following safety information that you must be familiar with before you service a
ThinkPad notebook computer.
• “General safety” on page 1
• “Electrical safety” on page 1
• “Safety inspection guide” on page 2
• “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.

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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 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
– 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 have 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.

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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
– 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-ThinkPad 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.

Hardware Maintenance Manual

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. 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-ThinkPad alterations. Use good judgment as to the safety of any
non-ThinkPad 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.

Chapter 1. Safety information

– 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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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 19
– “Strategy for replacing a solid-state drive” on page 19
– “Important notice for replacing a system board” on page 20
– “How to use error message” on page 20
• “Strategy for replacing FRUs for CTO, special-bid, and standard models” on page 20
– “Product definition” on page 20
– “FRU identification” on page 20
Important:
• Advise customers to contact the Lenovo® Support Web site at http://www.lenovo.com/support to view
the software fixes, download the drivers, and follow the on-screen instructions to install the drivers. For
additional assistance, customers might call the Lenovo Customer Support Center. Telephone numbers for
the Lenovo Support Center are available at:
http://www.lenovo.com/support/phone
• Service training documents for Lenovo authorized service technicians are available at the following Web
site. The disassembly and reassembly videos that show the FRU removal and replacement procedures
are contained in the documents.
http://www.lenovoservicetraining.com

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 http://www.lenovo.com/ThinkPadDrivers and
follow the instructions on the screen.
Use the following strategy to prevent unnecessary expense for replacing and servicing FRUs:
• 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.

Strategy for replacing a solid-state drive
Always try to run a low-level format before replacing a solid-state drive. This will cause all customer data
on the solid-state drive to be lost. Be sure that the customer has a current backup of the data before
doing this task.

Attention: The drive startup sequence in the computer you are servicing may have been changed. Be
extremely careful during write operations such as copying, saving, or formatting. If you select an incorrect
drive, data or programs can be overwritten.

Important notice for replacing a system board
Some components mounted on a system board are very sensitive. Improper handling of a system board can
cause damage to those components, and may cause a system malfunction.
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 BGA (Ball Grid Array) 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, 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) model
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: 20A7CTO1WW).
Special-bid model
This is a unique configuration that has been negotiated between Lenovo and the customer. A unique machine
type model (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: 20A7000955). 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:
20A70009UK).

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:
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Hardware Maintenance Manual

1. Go to http://support.lenovo.com/ibasepartslookup.
2. Type the Machine Type and Serial Number in the corresponding fields.
3. Click 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.
To get the general FRU list for a product, do the following:
1. Go to http://www.lenovo.com/support.
2. Follow the instructions on the screen to select a product.
3. Click the Product & Parts tab.
4. Select System Service Parts to view a general FRU list.

Chapter 2. Important service information

Hardware Maintenance Manual

Chapter 3. General checkout
This chapter introduces following information:
• “What to do first” on page 23
• “Checkout guide” on page 24
– “Lenovo Solution Center” on page 24
– “Quick test programs” on page 24
– “UEFI diagnostic program” on page 25
– “Bootable diagnostic programs” on page 25
• “Power system checkout” on page 26
Before you go to the checkout guide, be sure to 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 use new nylon-coated screws.
• Be extremely careful during such write operations as copying, saving, or formatting. The sequence
of the drives in the computer that you are servicing 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, ensure
that the model of the machine and the FRU part number are correct by referring to the web site:
http://www.lenovo.com/serviceparts-lookup
• A FRU should not be replaced because of a single, unreproducible failure. Single failures can
occur for various reasons that have nothing to do with a hardware defect, such as cosmic radiation,
electrostatic discharge, or software errors. Consider replacing a FRU only when a problem recurs. If you
suspect that a FRU is defective, clear the error log and run the test again. If the error does not recur, do
not replace the FRU.
• Be careful not to replace a nondefective FRU.

What to do first
When you return a FRU, you must include the following information in the parts exchange form or parts
return form that you attach to it:
1. Name and phone number of service technician
2. Date of service
3. Date on which the machine failed
4. Date of purchase
5. Failure symptoms, error codes appearing on the display, and beep symptoms
6. Procedure index and page number in which the failing FRU was detected
7. Failing FRU name and part number
8. Machine type, model number, and serial number
9. Customer's name and address
Note: During the warranty period, the customer may be responsible for repair costs if the computer damage
was caused by misuse, accident, modification, unsuitable physical or operating environment, or improper
maintenance by the customer. Following is a list of some common items that are not covered under warranty
and some symptoms that might indicate that the system was subjected to stress beyond normal use.

Before checking problems with the computer, determine whether the damage is covered under the warranty
by referring to the following list:
The following are not covered under warranty:
• LCD panel cracked from the application of excessive force or from being dropped
• Scratched (cosmetic) parts
• Distortion, deformation, or discoloration of the cosmetic parts
• Plastic parts, latches, pins, or connectors that have been cracked or broken by excessive force
• Damage caused by liquid spilled into the system
• Damage caused by the improper insertion of a PC card or the installation of an incompatible card
• Improper disc insertion or use of an optical drive
• Fuses blown by attachment of a nonsupported 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 nonwarranted 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.

Checkout guide
Use the following procedures as a guide in identifying and correcting problems with the ThinkPad notebook
computers.
Note: The diagnostic tests are intended to test only ThinkPad products. The use of non-ThinkPad 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 Solution Center
The Lenovo Solution Center program enables you to troubleshoot and resolve computer problems. It
combines diagnostic tests, system information collection, security status, and support information, along
with hints and tips for maximum system performance.
The Lenovo Solution Center program is available for download at http://www.lenovo.com/diags.
To run the Lenovo Solution Center program, go to Control Panel and click System and Security ➙ Lenovo System Health and Diagnostics, and then follow the instructions on the screen.
For more information about the Lenovo Solution Center program, refer to the help information system
of the program.

Quick test programs
Lenovo provides quick test programs to troubleshoot and resolve computer problems, especially when the
computer does not have the Lenovo Solution Center program installed.
To download and install a quick test program, go to http://www.lenovo.com/diags, and follow the instructions
on the Web site.
To run a test using quick test program, do the following:
24

Hardware Maintenance Manual

1. Go to the C:\SWTOOLS\ldiag directory.
2. Double-click the gui_lsc_lite.exe file.
3. When the User Account Control window opens, 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.

UEFI diagnostic program
A UEFI diagnostic program is preinstalled on the computer. It enables you to test 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:
1. Turn on the computer. If the computer cannot be turned on, go to “Power system checkout” on page 26,
and check the power sources. If an error code is displayed, go to “Symptom-to-FRU index” on page 37
for error code descriptions and troubleshooting hints.
2. When the ThinkPad logo is displayed, repeatedly press and release the F10 key. The main screen of the
UEFI diagnostic program is displayed.
3. Follow the instructions on the screen to use the diagnostic program.

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 USB device or CD.
To create a bootable diagnostic medium, do the following:
1. Go to http://www.lenovo.com/diags.
2. Click Lenovo Bootable Diagnostics.
3. Follow the instructions on the Web site to create a bootable diagnostic medium on a USB device or CD.
To use the diagnostic medium you have created, do one of the following:
• If you have created the bootable diagnostic medium on a USB device, do the following:
1. Attach the USB device to the computer.
2. Turn on the computer. If the computer cannot be turned on, go to “Power system checkout” on page
26, and check the power sources. If an error code is displayed, go to “Symptom-to-FRU index” on
page 37 for error code descriptions and troubleshooting hints.
3. When the ThinkPad logo is displayed, repeatedly press and release the F12 key. When the Boot
Menu window opens, release the F12 key.
4. Use the arrow keys to select USB HDD and then press Enter. The diagnostic program will be
launched automatically.
5. Follow the instructions on the screen to use the diagnostic program.
• If you have created the bootable diagnostic medium on a CD, do the following:

Chapter 3. General checkout

1. Turn on the computer. If the computer cannot be turned on, go to “Power system checkout” on page
26, and check the power sources. If an error code is displayed, go to “Symptom-to-FRU index” on
page 37 for error code descriptions and troubleshooting hints.
2. Insert the CD into the external optical drive.
3. Restart the computer.
4. When the ThinkPad logo is displayed, repeatedly press and release the F12 key. When the Boot
Menu window opens, release the F12 key.
5. Use the arrow keys to select ATAPI CDx (x: 0, 1, ...) and then press Enter. The diagnostic program
will be launched automatically.
6. Follow the instructions on the screen to use the diagnostic program.

Power system checkout
To verify if a battery and ac power adapter are functional, 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 the battery is functional.
If you suspect a power problem, see the appropriate one of the following power supply checkouts:
• “Checking the ac power adapter” on page 26
• “Checking the battery and operational charging” on page 27
• “Checking the coin-cell battery” on page 27

Checking the ac power adapter
You are here because the computer fails only when the ac power adapter is used.
• If the system status indicator does not blink three times when an ac power source is connected, check
the power cord of the ac power adapter for correct continuity and installation.
• If the computer does not charge during operation, go to “Checking the battery and operational charging”
on page 27.
To check the ac power adapter, do the following:
1. Unplug the ac power adapter cable from the computer.
2. Measure the output voltage at the plug of the ac power adapter cable. See the following illustration:

3
2
1

(20V)

Voltage (V dc)

+20

Ground

Note: Output voltage of pin 2 of the ac power adapter might differ from the one you are servicing.
3. If the voltage is not correct, replace the ac power adapter.
4. If the voltage is acceptable, replace the system board.

Hardware Maintenance Manual

Note: Noise from the ac power adapter does not always indicate a defect.

Checking the battery and operational charging
Checking the battery
This system 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 systems 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.
Move your pointer to the battery-status icon in the Windows® notification area to check the battery status.
The battery-status icon displays the percentage of battery power remaining and how long you can use
your computer before you must charge the battery.
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. 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 coin-cell battery
To check the coin-cell battery, do the following:
1. Disable the built-in battery. See “Disabling the built-in battery” on page 58.
2. Remove the coin-cell battery. See “1180 System board assembly” on page 81.
3. Measure the voltage of the coin-cell battery. See the following illustration.

Wire

Voltage (V dc)

Red

+2.5 to +3.2

Black

Ground

• If the voltage is correct, replace the system board.
• If the voltage is not correct, replace the coin-cell battery.
• If the coin-cell battery discharges quickly after replacement, replace the system board.

Chapter 3. General checkout

Hardware Maintenance Manual

Chapter 4. Related service information
This chapter presents following information:
• “Restoring the factory contents by using the product Recovery Disc Set” on page 29
• “Using the Windows recovery programs on the Windows 8.1 operating system” on page 30
• “Recovery overview for the Windows 10 operating system” on page 32
• “Passwords” on page 34
• “Power management” on page 36
• “Symptom-to-FRU index” on page 37
Service Web site: When the latest maintenance diskette and the system program service diskette become
available, they will be posted on http://www.lenovo.com/support

Restoring the factory contents by using the product Recovery Disc Set
When the main storage drive is replaced because of a failure, no product recovery program is on the new
drive. In this case, the customer must use the Recovery Disc Set to recover the computer. Order the
Recovery Disc Set and the drive at the same time so that the customer can restore the computer to the
factory default settings by using the Recovery Disc Set after the new drive is installed. For information about
which discs to order, go to:
http://www.lenovo.com/serviceparts-lookup.
Depending on the model, the number of recovery discs included in the Recovery Disc Set differs. To restore
the factory contents by using the product Recovery Disc Set, do the following:
Notes:
• During the recovery process, all data on the drive will be deleted. If possible, copy any important data
or personal files that you want to keep onto removable media or a network drive before you start the
recovery process.
• The recovery process takes one to two hours to complete. The length of time depends on the method you
use. If you use product Recovery Disc Set, the recovery process takes about two hours.
1. Connect an external CD/DVD drive.
2. Make the CD/DVD drive the first startup device in the startup sequence using the following procedure:
a. Open the ThinkPad Setup program and select Startup ➙ Boot.
b. Select the CD/DVD drive as the 1st Boot Device.
3. Insert the bootable recovery disc into the CD/DVD drive.
4. Start the computer from the external CD/DVD drive.
5. When promoted, select your language and click Next.
6. Read the license and accept the terms and conditions. Then follow the instructions on the screen.
7. If the Recovery Disc Set contains a Supplemental Recovery Disc, insert it when prompted and click Yes.
Note: Not all Recovery Disc Sets come with a Supplemental Recovery Disc. If there is a Supplemental
Recovery Disc, it will be clearly marked as such.
8. When all of the data has been copied from the last disc in the set and has been processed, remove
the external CD/DVD drive and restart the computer. Follow the instructions on the screen to finish
the recovery.
Note: The rest of the recovery process is fully automated and no action from you is required. The
computer will restart into the Microsoft Windows® desktop several times and you might experience
periods when no activity is apparent on the screen for several minutes at a time. This is normal.
© Copyright Lenovo 2015

9. When the recovery process completes, the Welcome to Microsoft Windows screen is displayed. Follow
the instructions on the screen to complete the Windows setup.
10. After you have completed the Windows setup, you might want to restore the original startup sequence.
Start the ThinkPad Setup program and then press F9 to restore the default settings. Press F10 to save
changes and exit the ThinkPad Setup program.
Note: After restoring a drive to the factory default settings, you might need to reinstall some device drivers.

Using the Windows recovery programs on the Windows 8.1 operating
system
This section provides information about the recovery solutions for the Windows 8.1 operating system.
A Windows recovery image is preinstalled in the recovery partition on your computer. The Windows recovery
image enables you to refresh your computer, or reset your computer to the factory default settings.
You can create recovery media as backups or replacement for the Windows recovery image. With the
recovery media, you can troubleshoot and fix the problems on your computer even if you cannot start the
Windows 8.1 operating system. It is recommended that you create recovery media as early as possible.
Refreshing the computer
If your computer does not perform well and the problem might be caused by a recently installed program,
you can refresh your computer without losing your personal files or changing your settings.
Attention: If you refresh your computer, the programs that came with your computer and the programs that
you installed from Windows Store will be reinstalled, but all other programs will be removed.
To refresh your computer, do the following:
1. Move your pointer to the top-right or bottom-right corner of the screen to display the charms. Click
Settings ➙ Change PC settings ➙ Update and recovery ➙ Recovery.
2. In the Refresh your PC without affecting your files section, click Get started.
3. Follow the instructions on the screen to refresh your computer.
Resetting the computer to the factory default settings
If you want to recycle your computer or just start over, you can reset your computer to the factory default
settings. Resetting the computer will reinstall the operating system, reinstall all the programs that came with
your computer, and reset all the settings to the factory default settings.
Attention: If you reset the computer to the factory default settings, all your personal files and settings will be
deleted. To avoid data loss, make a backup copy of all the data that you want to keep.
To reset your computer to the factory default settings, do the following:
1. Move your pointer to the top-right or bottom-right corner of the screen to display the charms. Click
Settings ➙ Change PC settings ➙ Update and recovery ➙ Recovery.
2. In the Remove everything and reinstall Windows section, click Get started. Then click Next to
confirm the operation.
3. Depending on your needs, do one of the following:
• To perform a quick format, click Just remove my files to start the process. The process will take
several minutes.
• To perform a complete format, click Fully clean the drive to start the process. The process will
take several hours.

Hardware Maintenance Manual

4. Follow the instructions on the screen to reset your computer to the factory default settings.
Using the advanced startup options
With the advanced startup options, you can change the firmware settings of the computer, change the
startup settings of the Windows operating system, start the computer from an external device, or restore the
Windows operating system from a system image.
To use the advanced startup options, do the following:
1. Move your pointer to the top-right or bottom-right corner of the screen to display the charms. Click
Settings ➙ Change PC settings ➙ Update and recovery ➙ Recovery.
2. In the Advanced startup section, click Restart now ➙ Troubleshoot ➙ Advanced options.
3. Select a desired startup option, then follow the instructions on the screen.
Recovering your computer from the Windows recovery environment
The Windows recovery environment on your computer is capable of operating independently from the
Windows 8.1 operating system. This enables you to recover or repair the operating system even if the
Windows 8.1 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.
You can create recovery media as backups for the Windows recovery environment and the Windows
recovery image. If you cannot start the computer, you can use recovery media to troubleshoot and fix the
problems on your computer.
It is recommended that you create recovery media as early as possible. Once you create recovery media,
keep them in a safe place and do not use them to store other data.
Creating recovery media
To create recovery media, you need a USB drive with at least 16 GB of storage. The required USB capacity
depends on the size of the recovery image.
Attention: Creating recovery media will delete 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 recovery media, do the following:
Note: Ensure that your computer is connected to ac power.
1. Move your pointer to the top-right or bottom-right corner of the screen to display the charms, and
click Search.
2. Type recovery in the Search field and click the Search button. Then click Create a recovery drive.
3. Click Yes in the User Account Control window to allow the Recovery Media Creator program to start.
4. Ensure that you select the Copy the recovery partition from the PC to the recovery drive. option.
Then click Next.
Important: If you clear the Copy the recovery partition from the PC to the recovery drive. option,
you will create recovery media without the recovery partition content. You still can start the computer
from the recovery media, but you might be unable to recover your computer if the recovery partition on
your computer is damaged.
5. Connect a proper USB drive then click Next.
Chapter 4. Related service information

6. Click Create in the Recovery Drive window. The creation of the recovery media starts.
7. When the creation of the recovery media finishes, do one of the following:
• To keep the recovery partition on your computer, click Finish.
• To delete the recovery partition on your computer, click Delete the recovery partition.
Attention: If you delete the recovery partition on your computer, do keep the recovery media in a
safe place. The Windows recovery image will not be stored in your computer anymore, and you will
need the recovery media to refresh or reset your computer.
8. Remove the USB drive. The recovery media are created successfully.
Using recovery media
If you cannot start your computer, or if you cannot start the Windows recovery image on your computer, use
recovery media to recover your computer.
To use recovery media, do the following:
Note: Ensure that your computer is connected to ac power.
1. Turn on or restart the computer. Before the Windows operating system starts, repeatedly press the F12
key. The Boot Menu window opens.
2. Select the recovery drive as the boot device.
3. Select a preferred language and then select a preferred keyboard layout.
4. Click Troubleshoot to display the optional recovery solutions.
5. Select a corresponding recovery solution according to your situation. For example, select Reset your
PC if you want to reset your computer to the factory default settings.
For more information about the recovery solutions provided by the Windows 8.1 operating system, go to:
http://go.microsoft.com/fwlink/?LinkID=263800

Recovery overview for the Windows 10 operating system
The Windows recovery programs 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 programs.
For more information, see “Creating and using a recovery USB drive” on page 33.

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 reset 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 and then click Settings. If Settings is not displayed, click All apps to display all
programs, and then click Settings ➙ Update & security ➙ Recovery.
2. In the Reset this PC section, click Get started.
3. Follow the instructions on the screen to reset your computer.

Hardware Maintenance Manual

Using advanced startup options
With advanced startup options, you can change the firmware settings of the computer, change the startup
settings of the Windows operating system, start the computer from an external device, or restore the
Windows operating system from a system image.
To use advanced startup options, do the following:
Note: The GUI items of the operating system might change without notice.
1. Open the Start menu and then click Settings. If Settings is not displayed, click All apps to display all
programs, and then click Settings ➙ Update & security ➙ Recovery.
2. In the Advanced startup section, click Restart now ➙ Troubleshoot ➙ Advanced options.
3. Select a desired startup option, then follow the instructions on the screen.

Recovering your operating system if Windows 10 fails to start
The Windows recovery environment on your computer is 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 programs. With the recovery
USB drive, you can troubleshoot and fix the problems even if the preinstalled Windows recovery programs
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 click Create a recovery drive.
3. Click Yes in the User Account Control window to allow the Recovery Media Creator program 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.
1. Connect the recovery USB drive to the computer.

Chapter 4. Related service information

2. Turn on or restart the computer. Before the Windows operating system starts, repeatedly press the F12
key. The Boot Menu window opens.
3. Select the recovery USB drive as the boot device.
4. Select a preferred keyboard layout.
5. Click Troubleshoot to display the optional recovery solutions.
6. Select a corresponding recovery solution according to your situation. Then follow the instructions on
the screen to complete the process.

Passwords
As many as three passwords may be needed for any ThinkPad notebook computer: the power-on password,
the hard disk password, and the supervisor password.
If any of these passwords has been set, a prompt for it will be displayed on the screen whenever the
computer is turned on. The computer does not start until the password is entered.
Note: If only a supervisor password is set, the password prompt will not be displayed when the operating
system is started.

Power-on password
A power-on password protects the system from being powered on by an unauthorized person. The
password must be entered before an operating system can be started. For instructions on how to remove
the power-on password, see “How to remove the power-on password” on page 35.

Hard disk password
There are two kinds of hard disk passwords:
• User hard disk password - for the user
• Master hard disk password - for the system administrator, who can use it to get access to the hard disk
even if the user has changed the user hard disk password
Note: There are two modes for the hard disk password: User only and Master + User. The Master + User
mode requires two hard disk passwords; the system administrator enters both in the same operation. The
system administrator then provides the user hard disk password to the system user.
Attention: If the user hard disk password has been forgotten, check whether a master hard disk password
has been set. If it has, it can be used for access to the hard disk drive. If no master hard disk password is
available, neither Lenovo nor Lenovo authorized service technicians provide any services to reset either
the user or the master hard disk password, or to recover data from the hard disk drive. The hard disk drive
can be replaced for a scheduled fee.
For how to remove the hard disk password, see “How to remove the hard disk password” on page 35.

Supervisor password
A supervisor password protects the system information stored in the ThinkPad Setup. The user must enter
the supervisor password in order to get access to the ThinkPad Setup and change the system configuration.
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.

Hardware Maintenance Manual

How to remove the power-on password
To remove a power-on password, do the following:
If no supervisor password has been set, do the following to remove the power-on password:
1. Turn off the computer and disconnect ac power.
2. Disable the built-in battery. See “Disabling the built-in battery” on page 58.
3. Remove the removable battery. See “1010 Removable battery” on page 59.
4. Remove the base cover assembly. See “1020 Base cover assembly” on page 59.
5. Remove the coin-cell battery. See “1090 Coin-cell battery” on page 71.
6. Reinstall the coin-cell battery. See “1090 Coin-cell battery” on page 71.
7. Reinstall the base cover assembly.
8. Reinstall the removable battery.
9. Reconnect ac power.
10. Turn on the computer and wait until the POST ends. After the POST ends, the password prompt does
not appear. The power-on password has been removed.
If a supervisor password has been set and is known to the service technician, do the following to remove
the power-on password:
1. Turn on the computer.
2. When the ThinkPad logo is displayed, immediately press F1.
3. Type the supervisor password to enter the ThinkPad Setup program.
4. Select Security.
5. Select Password.
6. Select Power-On Password.
7. Type the current supervisor password in the Enter Current Password field. Then leave the Enter
New Password field blank, and press Enter twice.
8. In the Changes have been saved window, press Enter.
9. Press F10 to save changes and exit the ThinkPad Setup program. The power-on password has
been removed.

How to remove the hard disk password
Attention: If User only mode is selected and the user hard disk password has been forgotten and cannot be
made available to the service technician, neither Lenovo nor Lenovo authorized service technicians provide
any services to reset the user hard disk passwords, or to recover data from the hard disk drive. To put the
system back to operational status, the only Lenovo and Lenovo-authorized service solution would be to
replace the hard disk drive or solid-state drive with a scheduled fee.
To remove a user hard disk password that has been forgotten, when the supervisor password and master
hard disk password are known, do the following:
1. Turn on the computer.
2. When the ThinkPad logo comes up, immediately press F1 to enter the ThinkPad Setup program. When
the power-on password icon is displayed on the screen, enter either the power-on password or the
supervisor password.
3. When the user hard disk password icon is displayed on the screen, press F1. The master hard disk
password icon is displayed.
4. Enter the master hard disk password to enter the ThinkPad Setup program.
5. Select Security.
6. Select Password.
Chapter 4. Related service information

7. Select Hard-disk x password, where x is the letter of the hard disk drive. A pop-up window opens.
8. Select Master hard disk password.
9. Type the current master hard disk password in the Enter Current Password field. Then leave the Enter
New Password field blank, and press Enter twice.
10. Press F10 to save changes and exit the ThinkPad Setup program. The user hard disk password and the
master hard disk password have been removed.

Power management
To reduce power consumption, the computer has three power management modes: screen blank, sleep,
and hibernation.

Screen blank mode (for the Windows 7 operating system only)
If the time set on the “Turn off monitor” timer in the operating system expires, the LCD backlight turns off.
To put the computer into screen blank mode, do the following:
1. Right-click the battery gauge in the task bar.
2. Select Power off display.
To end screen blank mode and resume normal operation, press any key.

Sleep mode
When the computer enters sleep mode, the following events occur in addition to what occurs in screen
blank mode:
• The LCD is powered off.
• The internal storage drive (hard disk drive, solid-state drive, or hybrid drive) is powered off.
• The microprocessor stops.
To enter sleep mode, press Fn+4 or do the following:
• For Windows 7: Open the Start menu, then click the arrow next to the Shut down button. Click Sleep
from the menu displayed.
• For Windows 8.1: Go to the Start screen by pressing the Windows key
then click Sleep.
• For Windows 10: Open the Start menu, click

, click the power icon

Power, and then click Sleep.

In certain circumstances, the computer goes into sleep mode automatically:
• After a period of inactivity specified in power plan settings
• When the battery power is low
To resume the computer from sleep mode, press the power button.
Also, in either of the following events, the computer automatically returns from sleep mode and resumes
operation:
• The ring indicator (RI) is signaled by a serial device or a PC Card device.
• The time set on the resume timer elapses.
Note: The computer does not accept any input immediately after it enters sleep mode. Wait a few
seconds before taking any action to reenter operation mode.

Hardware Maintenance Manual

Hibernation mode
In hibernation mode, the following occurs:
• The system status, RAM, VRAM, and setup data are stored on the hard disk.
• The system is powered off.
Note: If the computer enters the hibernation mode while it is docked to the docking station, do not undock it
before resuming normal operation. If you do undock it and then try to resume normal operation, you will get
an error message, and you will have to restart the system.
If you have defined one of the following actions as the event that causes the system to go into hibernation
mode, perform that action.
• Closing the lid.
• Pressing the power button.
Also, the computer goes into hibernation mode automatically after a period of inactivity specified in power
plan settings.
When the power is turned on, the computer returns from hibernation mode and resumes operation. The
hibernation file in the boot record on the hard disk drive is read, and system status is restored from the
hard disk drive.

Symptom-to-FRU index
This section contains following information:
• “Numeric error codes” on page 38
• “Error messages” on page 39
• “Beep symptoms” on page 39
• “No-beep symptoms” on page 39
• “LCD-related symptoms” on page 40
• “Intermittent problems” on page 40
• “Undetermined problems” on page 40
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 need 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 40.
Note: For a device not supported by diagnostic codes in the ThinkPad notebook computers, see the
manual for that device.

Chapter 4. Related service information

Numeric error codes
Table 1. Numeric error codes
Symptom or error
0177
Bad SVP data, stop POST task—The checksum of the
supervisor password in the EEPROM is not correct.
0183
Bad CRC of Security Settings in EFI Variable. Enter the
ThinkPad Setup program.

FRU or action, in sequence
System board

1. Run the ThinkPad Setup program, and then save
current setting by pressing F10.
2. System board

0187
EAIA data access error—The access to EEPROM is failed.

System board

0188
Invalid RFID Serialization Information Area.

System board

0189
Invalid RFID configuration information area—The
EEPROM checksum is not correct.

System board

0190
Critical low-battery error

1. Charge the battery.
2. Battery

0191
System Security—Invalid Remote Change requested.

1. Run the ThinkPad Setup program, and then save
current setting by pressing F10.
2. System board

0199
System Security— Security password retry count
exceeded.

1. Run the ThinkPad Setup program, and then save
the current setting by pressing F10.
2. System board

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.
Enter ThinkPad Setup and set the date and time.

1802
Unauthorized network card is plugged in—Turn off and
remove the network card.
1820
More than one external fingerprint reader is attached.
Power off and remove all but the reader that you set up
within your main operating system.
2100
Detection error on HDD0 (Main HDD)

1. Remove wireless network card.
2. System board
Remove all but the reader that you set up for the
authentication.

1. Reseat the hard disk drive.
2. Main hard disk drive
3. System board

2101
Detection error on SSD1 (M.2)

The M.2 SSD device is not working. Have the M.2
SSD device serviced.

2102
Detection error on SSD2 (M.2)

The M.2 SSD device is not working. Have the M.2
SSD device serviced.

2110
Read error on HDD0 (Main HDD)

1. Reseat the hard disk drive.
2. Main hard disk drive
3. System board

2111
Read error on SSD1 (M.2)

The M.2 SSD device is not working. Have the M.2
SSD device serviced.

2112
Read error on SSD2 (M.2)

The M.2 SSD device is not working. Have the M.2
SSD device serviced.

Hardware Maintenance Manual

Table 1. Numeric error codes (continued)
Symptom or error

FRU or action, in sequence

2200
Machine Type and Serial Number are invalid.

System board

2201
Machine UUID is invalid

System board

Error messages
Table 2. Error messages
Symptom or error
Fan error

Thermal sensing error

FRU or action, in sequence
1. Fan
2. Thermal grease
3. System board
System board

Beep symptoms
Table 3. Beep symptoms
Symptom or error

FRU or action, in sequence

One short beep, pause, three short beeps, pause, three
more short beeps, pause, and one short beep (1-3-3-1
beeps)

Memory problem

One long and two short beeps

Video problem

Three short beeps, pause, one short beep, pause, one
short beep, pause, and three more short beeps (3-1-1-3
beeps)

PCI resource problem

Four cycles of four short beeps

TCG*-compliant functionality-related problem

Five short beeps

System board

Five short beeps, pause, five more short beeps, and
pause

TCG*-compliant functionality-related problem

No-beep symptoms
Table 4. No-beep symptoms
Symptom or error
No beep, system-status indicator on, LCD blank, and no
POST.

FRU or action, in sequence
1. Ensure that every connector is connected tightly
and correctly.
2. System board

No beep, system-status indicator on, and LCD blank
during POST.

System board

The power-on password prompt appears.

A power-on password or a supervisor password is
set. Type the password and press Enter.

The hard-disk password prompt appears.

A hard-disk password is set. Type the password and
press Enter.

Chapter 4. Related service information

LCD-related symptoms
Important: The TFT LCD for the notebook computer contains many thin-film transistors (TFTs). The
presence of a small number of dots that are missing, discolored, or always lighted is characteristic of TFT
LCD technology, but excessive pixel problems can cause viewing concerns.If the LCD you are servicing has
two or less visible defective pixels, it should not be considered faulty. However, if the LCD has three or more
visible defective pixels, it will be deemed as defective by Lenovo and it should be replaced.
Notes:
• This policy applies to all ThinkPad notebooks purchased on 1 January, 2008 or later.
• Lenovo will not provide warranty replacement if the LCD is within specifications because we cannot
guarantee that any replacement LCD will have zero pixel defects.
•One pixel consists of R, G, B sub-pixels.
Table 5. LCD-related symptoms
Symptom or error

FRU or action, in sequence

No beep, power-on indicator on, and a blank LCD during
POST.

System board

•
•
•
•

LCD backlight not working.
LCD too dark.
LCD brightness cannot be adjusted.
LCD contrast cannot be adjusted.

1. Reseat the LCD connectors.
2. LCD assembly
3. System board

•
•
•
•

LCD screen unreadable.
Characters missing pixels.
Screen abnormal.
Wrong color displayed.

1.
2.
3.
4.

Horizontal or vertical lines displayed on LCD.

See important note for “LCD-related symptoms.”
Reseat all LCD connectors.
LCD assembly
System board
LCD assembly

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 26.
1. Turn off the computer.
2. Visually check each FRU for damage. Replace any damaged FRU.
3. Remove or disconnect all of the following devices:
40

Hardware Maintenance Manual

4.
5.
6.
7.

a. Non-ThinkPad devices
b. Printer, mouse, and other external devices
c. External diskette drive or optical drive
d. Wireless cards
Turn on the computer.
Determine whether the problem has been solved.
If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.
If the problem remains, replace the following FRUs one at a time (do not replace a nondefective FRU):
a. System board
b. LCD assembly

Chapter 4. Related service information

Hardware Maintenance Manual

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

Locating computer controls, connectors, and indicators
This topic introduces the locations of the computer controls, connectors, and indicators.

Front view
2

12
11

3
10
9

8
1 Camera (available on some models)
3 Power button with system-status indicator

2 Microphones (available on some models)
1

4 Security-lock slot

5 Fan louvers

6 Mini DisplayPort® connector

7 USB 3.0 connector

8 Always On USB 3.0 connector

9 Fingerprint reader (available on some models)

10 Trackpad

11 TrackPoint® buttons

12 TrackPoint pointing stick

The indicator in the ThinkPad logo and the indicator in the center of the power button show the system
status of the computer.
Blinks for three times: The computer is initially connected to power.
On: The computer is on (in normal mode).
Blinks fast: The computer is entering sleep or hibernation mode.
Blinks slowly: The computer is in sleep mode.
Off: The computer is off or in hibernation mode.

Left-side view
8

7
6
5
4

3
2

1 Smart-card-reader slot (available on some models)

2 Ethernet connector

3 Media-card-reader slot

4 Audio connector

5 VGA connector

6 USB 3.0 connector

7 Power connector

8 System-status indicator

Bottom view
1
2

3
3

5
4
1 Removable battery

2 Docking station connector

3 Keyboard drainage holes

4 Speakers

5 Emergency-reset hole

Hardware Maintenance Manual

Locating FRUs and CRUs
This topic introduces the following service parts:
• “Major FRUs” on page 46
• “LCD FRUs” on page 47
• “Miscellaneous parts and other FRUs” on page 50
Notes:
• Each FRU is available for all types or models, unless otherwise specified.
• 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 http://www.lenovo.com/support. 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.
ThinkPad computers contain the following types of CRUs:
– Self-service CRUs: These CRUs unplug or are held by no more than two screws. Examples of these types
of CRUs include the ac power adapter, power cord, and hard disk drive. Other self-service CRUs depending
on product design might include the memory module, wireless card, keyboard, and palm rest with fingerprint
reader and touch pad.
– Optional-service CRUs: These CRUs are isolated parts within the computer that are concealed by an access
panel that is typically secured by more than two screws. Once the access panel is removed, the specific
CRU is visible.

Chapter 5. Locations

Major FRUs

1
26

21
20
19

18
17

6
7

8
9
10
11
12
13
14

No.

Descriptions

Self-service CRU

Optional-service
CRU

LCD unit (see “LCD FRUs” on page 47)

Keyboard bezel assembly

System board

Power button board

Thermal fan

Hardware Maintenance Manual

No.

Descriptions

Self-service CRU

Optional-service
CRU

Memory module

Yes

Fingerprint reader *

Fingerprint reader bracket *

Internal storage drive (hard disk drive, solid-state drive, or hybrid
drive)

Yes

Hard disk drive cable

Yes

Hard disk drive bracket

Yes

Storage-drive stabilizer bar

Yes

Speaker assembly

Removable battery

Yes

Base cover assembly

Smart card reader or dummy smart card reader (depending on
the model)

Built-in battery or battery bracket (depending on the model)

Coin-cell battery

Yes

M.2 solid-state drive *

Wireless WAN card *

Yes

Wireless LAN card

Yes

dc-in bracket

Yes

dc-in cable

Yes

Board for Trackpad and TrackPoint buttons

Keyboard

Yes

TrackPoint cap

Yes

Note: Depending on the model, the items marked with an asterisk (*) might not be available on your computer.

LCD FRUs
For models without touch function:

Chapter 5. Locations

No. Descriptions

Self-service CRU

Optional-service
CRU

LCD bezel assembly

Camera/microphone card

LCD panel without touch function

Hardware Maintenance Manual

No. Descriptions

Self-service CRU

Optional-service
CRU

Antenna kit or dummy antenna kit

LED cable assembly

Hinge brackets

Hinges

LCD rear cover assembly

For models with touch function:

1
8

3
4

Chapter 5. Locations

No. Descriptions

Self-service Optional-service
CRU
CRU

LCD panel assembly with touch function

Camera/microphone card

Touch sensor card

Antenna kit or dummy antenna kit

LED cable assembly

Hinges

LCD rear cover assembly

LCD front sheet bezel

Miscellaneous parts and other FRUs
Miscellaneous part
FRU descriptions

Self-service CRU

Optional-service
CRU

Screw kit

• M2*L3.5, silver, thin head (100)
• M2*L3, black, thin head (30)
• M2*L2.5, big head (30)
• M2*L3, big head (30)
• M2*L2.5 + 3.1 (30)
• M2*L6 (30)
• M2.5*L7 (30)
• M2*L2.5, black (30)
• M2.5*L2.5, big head (30)
• M2.5*L4, silver (30)
• M2*L2, black, P=0.25 (30)
• Spec (1)
Base cover assembly miscellaneous kit
• Battery latch L (1)
• Battery latch R (1)
• Battery knob L (1)
• Battery knob R (1)
• Front rubber foot (1)
• Rear rubber foot (1)
• Base cover ESD sponge (1)
• Battery latch spring (1)
• Spec (1)

Hardware Maintenance Manual

Other FRUs
FRU descriptions

Self-service
CRU

Optional-service
CRU

ac power adapter

Yes

Power cord

Yes

Looking up FRU information
For detailed FRU information, including part numbers, descriptions, and substitution part numbers, go to
http://www.lenovo.com/serviceparts-lookup.

Chapter 5. Locations

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
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
http://www.lenovo.com/support. Click 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.

Common service tools
Below is the list of common service tools that you might need while servicing the computer.
• Screwdriver kit
• 1/4" drive spinner handle
• 1/4" Sq. to 1/4" hex torx adapter
• TR7-TR-10 tamper resistant torx bits
• Removal tool antenna RF connector
• USB 2.0 CD-RW/DVD-ROM combo drive II
• USB cable
• USB Maintenance Key
• USB floppy diskette drive for maintenance diskette
• USB floppy diskette drive tool kit
• Test card for integrated Smart Card
• LENOVO ThinkPad Hardware Maintenance Diskette Version 1.76 or later
Note: Download the file from the following Web site:
http://www.lenovo.com/support

Screw notices
Loose screws can cause a reliability problem. In the ThinkPad notebook 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
http://www.lenovo.com/serviceparts-lookup.
• 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.
90 degrees more

(Cross-section)

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

(Cross-section)

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
This section includes the following descriptions:
• “Restoring the serial number of the system unit” on page 54
• “Retaining the UUID” on page 55
• “Reading or writing the ECA information” on page 56

Restoring the serial number of the system unit
When the computer was manufactured, the EEPROM on the system board was loaded with the serial
numbers of the system and all major components. These numbers need to remain the same throughout
the life of the computer.
If you replace the system board, you must restore the serial number of the system unit to its original value.
The serial number of the system unit is written on the label attached to the bottom of the computer.
If you cannot find the serial number of the system unit on the bottom of the computer, try the following
method to get the number:
Note: Before you perform the operation, ensure that the UEFI/Legacy setting within the Startup menu in
the ThinkPad Setup program is set to UEFI Only.
1. Connect a USB memory key to the computer.

Hardware Maintenance Manual

2. Go to http://www.lenovo.com/maintenanceutilities and follow the instructions on the screen to create a
Maintenance Key.
Note: Only an authorized Lenovo service technician can access the above Web site.
3. Restart the computer.
4. When the logo is displayed, press Esc. The ThinkPad Config Information Update Utility interface is
displayed.
5. Type 1 under Enter the action desired, then press Enter. The ThinkPad Serial Number Update Utility for
Asset ID screen is displayed.
6. Type 2 under Enter the action desired, then press Enter. The serial number of each device in your
computer is displayed; the serial number of the system unit is listed as follows:
20- Serial number
7. Record the serial number of the system unit.
After you replace the system board, do the following to restore the serial number of the system unit:
1. Connect the Maintenance Key to the computer.
2. When the logo is displayed, press Esc. The ThinkPad Config Information Update Utility interface is
displayed.
3. Type 1 under Enter the action desired, then press Enter. The ThinkPad Serial Number Update Utility for
Asset ID screen is displayed.
4. Type 1 under Enter the action desired, then press Enter. Then follow the instructions on the screen
to restore the serial number of the system unit.

Retaining the UUID
The Universally Unique Identifier (UUID) is a 128-bit number uniquely assigned to your computer at
production and stored in the EEPROM of your system board.
The algorithm that generates the number is designed to provide unique IDs until the year A.D. 3400. No two
computers in the world have the same number.
When you replace the system board, perform the following steps to create a new UUID for the system
board if the system board does not have a UUID:
Note: Before you perform the operation, ensure that the UEFI/Legacy setting within the Startup menu in
the ThinkPad Setup program is set to UEFI Only.
1. Connect a USB memory key to the computer.
2. Go to http://www.lenovo.com/maintenanceutilities and follow the instructions on the screen to create a
Maintenance Key.
Note: Only an authorized Lenovo service technician can access the above Web site.
3. Restart the computer.
4. When the logo screen is displayed, press Esc. The ThinkPad Config Information Update Utility interface
is displayed.
5. Type 2 under Enter the action desired, then press Enter. The Auto UUID generation utility interface is
displayed.
6. Type y under Change UUID. OK? [Y/N], then press Enter. A new UUID is created and written. If a
valid UUID already exists, it is not overwritten.

Chapter 6. FRU replacement notices

Reading or writing the ECA information
Information on Engineering Change Announcements (ECA) is stored in the EEPROM of the system board.
The electronic storage of this information simplifies the procedure to check if the ECA has been previously
applied to a machine. The machine does not need to be disassembled to check for the ECA application.
To check what ECAs have been previously applied to the machine, use the ECA Information Read/Write
function on the USB Maintenance Key.
1. Insert the Maintenance Key and restart the computer.
2. From the main menu, select 6. Set ECA Information.
3. To read the ECA information, select 2. Read ECA/rework number from EEPROM and follow the
instructions on the screen.
4. To read the box build date, select 5. Read box build date from EEPROM, and follow the instruction on
the screen.
After an ECA has been applied to the machine, the EEPROM must be updated to reflect the ECA's
application. Use the Maintenance Key to update the EEPROM.
Note: Only the ECA number is stored in the EEPROM. The machine type of the ECA is assumed to be the
same as the machine type of the machine that had the ECA applied to it.
1. Insert the Maintenance Key and restart the computer.
2. From the main menu, select 6. Set ECA Information.
3. To write the ECA information, select 1. Write ECA/rework number from EEPROM, and follow the
instructions on the screen.
4. To write the box build date, select 4. Write box build date from EEPROM, and follow the instruction on
the screen.
If the system board is being replaced, try to read the ECA information from the old system board and transfer
the information to the new system. If the system board is inoperable, this will not be possible.

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
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 is available for downloading at
http://www.lenovo.com/support. 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 53.
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 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, move 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,
disconnect any interconnecting cables, and then disable the built-in battery.
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
Carefully read this topic before servicing the computer.

Disabling the built-in battery
Before replacing any FRU, ensure that you have disabled the built-in battery by doing the following:
1. Turn off your computer and disconnect the ac power adapter and all cables from the computer.
2. Turn on your computer. When the ThinkPad logo is displayed, immediately press F1 to enter ThinkPad
Setup.
3. Select Config ➙ Power. The Power submenu is displayed.
4. Select Disable built-in battery and press Enter.
5. 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 micro SIM card
For access, remove this FRU:
• “1010 Removable battery” on page 59
If the computer has a micro SIM card installed, you also must remove the micro SIM card before you
start the servicing.

1
2

After you finish the servicing, ensure that you install the micro SIM card (if available) into the micro SIM
card slot.

Removing a major FRU
This section provides instructions on how to remove a major FRU.

Hardware Maintenance Manual

1010 Removable battery
Important notice for replacing a removable battery
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.
The Lenovo Solution Center program provides an automatic battery diagnostic test that determines if the
battery pack is defective. A battery pack FRU should not be replaced unless this diagnostic test shows
that the battery is defective. The only exception to this is if the battery pack is physically damaged or a
customer is reporting a possible safety issue.
If the Lenovo Solution Center program is not installed on the computer, the customer should download and
install the program to diagnose the battery pack, before getting a non-physically damaged battery pack
replaced. Note that the replacement of a physically damaged battery pack is not covered by the warranty.
Removal steps of the removable battery
DANGER
Use only the authorized battery specified for your computer. Any other battery could ignite or
explode.

1
1

2
2

1020 Base cover assembly
For access, remove this FRU:
• “1010 Removable battery” on page 59

Chapter 7. Removing or replacing a FRU

Removal steps of the base cover assembly

3
3
4

3
3

Hardware Maintenance Manual

Applying labels to the base cover:
The new base cover assembly is shipped with a kit containing labels of several kinds. Apply those labels
when you replace the base cover assembly. For the labels that are not shipped with the new base cover
assembly, peel them from the old base cover assembly, and adhere them to the new one.
The following illustration shows the location of each label.
1

22
21
20
8
19

15
14
13

1 System barcode label

2 System label

3 FCC label

4 WWAN label (for Taiwan and Korea)

5 Information label

6 GEO label

7 Certificate of Authenticity label (for Windows 7)

8 China GEO label

9 CECP label (for China)

10 WWAN IMEI label

11 Genuine Microsoft label (for Windows 8.1)

12 Asset tag

13 Korea KC Safety label (for Korea)

14 Mexico Energy label (for Mexico)

15 SIRIM label (for Malaysia)

16 Postel label (for Malaysia)

17 ICASA label (for South Africa)

18 Brazil WWAN label (for Brazil)

19 ISRAEL label (for Israel)

20 Postel label (for Indonesia)

21 Indonesia Rating label (for Indonesia)

22 INDIA BIS label (for India)

1030 Keyboard
For access, remove this FRU:
• “1010 Removable battery” on page 59

Chapter 7. Removing or replacing a FRU

Removal steps of the keyboard
To reveal the screw heads beneath the keyboard frame, slide the keyboard frame forward by 2.5 mm (0.1
inch) with the flat end of the keyboard multi-tool.

Loosen the screws that secure the keyboard with the cross end of the keyboard multi-tool.

Hardware Maintenance Manual

Pivot the keyboard slightly upward until you can see the connectors on the bottom side of the keyboard 3 .
Then turn over the keyboard 4 .

Gently put the keyboard on the palm rest and detach the connectors. Then remove the keyboard.

5
7

Installing the new keyboard
Attach the connectors and then turn over the keyboard.

4
2
1

Chapter 7. Removing or replacing a FRU

Insert the keyboard into the space under the frame of the keyboard bezel as shown. Ensure that the front
edge of the keyboard (the edge that is close to the display) is under the frame of the keyboard bezel.

Reveal the screw heads by sliding the keyboard frame forward with the flat end of the keyboard multi-tool.
Ensure that the screw heads are exposed completely.

Hardware Maintenance Manual

Tighten the screws with the cross end of the keyboard multi-tool to secure the keyboard in place.

Slide the keyboard frame backward by 2.5 mm (0.1 inch) with the flat end of the keyboard multi-tool. Hide the
latches of the keyboard frame under the keyboard bezel by pushing the latches with your finger as shown.

Chapter 7. Removing or replacing a FRU

Adjust the keyboard frame in place with the flat end of the keyboard multi-tool to ensure that all the latches
are secured under the keyboard bezel.

1040 Storage-drive stabilizer bar, internal storage drive, hard disk drive
cable, and hard disk drive bracket
For access, remove this FRU:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
Attention:
• Do not drop the drive or apply any physical shock to it. The drive is sensitive to physical shock. Improper
handling can cause damage and permanent loss of data.
• Before removing the drive, have the user make a backup copy of all the information on it if possible.
• Never remove the drive while the system is operating or in suspend mode.
Removal steps of the storage-drive stabilizer bar
1
1

Step

Screw (quantity)

Color

Torque

M2 × L3.5 mm, flat-head, nylon-coated (2)

Silver

0.181 Nm
(1.85 kgf-cm)

Hardware Maintenance Manual

Removal steps of the internal storage drive

3
4

Step

Screw (quantity)

Color

Torque

M2 × L3.5 mm, flat-head, nylon-coated (1)

Silver

0.181 Nm
(1.85 kgf-cm)

When installing: Ensure that the internal storage drive is firmly attached.
Removal steps of the hard disk drive cable and hard disk drive bracket

Chapter 7. Removing or replacing a FRU

1050 Memory module
For access, remove this FRU:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
Removal steps of the memory module

1
2

1060 Wireless LAN card
Note: This information is only for the user-replaceable modules.
For access, remove this FRU:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59

Hardware Maintenance Manual

Removal steps of the wireless LAN card
1

Step

Screw (quantity)

Color

Torque

M2 × L3.5 mm, flat-head, nylon-coated (1)

Bronze

0.181 Nm
(1.85 kgf-cm)

When installing: Plug the gray cable into the main connector and the black cable into the auxiliary connector.

1070 Wireless WAN card
Note: This information is only for the user-replaceable modules.
For access, remove this FRU:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59

Chapter 7. Removing or replacing a FRU

Removal steps of the wireless WAN card
1

Step

Screw (quantity)

Color

Torque

M2 × L3.5 mm, flat-head, nylon-coated (1)

Bronze

0.181 Nm
(1.85 kgf-cm)

When installing: Plug the orange cable into the main connector and the blue cable into the auxiliary
connector.

1080 M.2 solid-state drive
For access, remove this FRU:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59

Hardware Maintenance Manual

Removal steps of the M.2 solid-state drive
1

Step

Screw (quantity)

Color

Torque

M2 × L3.5 mm, flat-head, nylon-coated (1)

Bronze

0.181 Nm
(1.85 kgf-cm)

1090 Coin-cell battery
For access, remove this FRU:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59

Chapter 7. Removing or replacing a FRU

Removal steps of the coin-cell battery

1
2

When installing: Ensure that the connector is attached firmly.

1110 dc-in bracket and dc-in cable assembly
For access, remove these FRUs:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
Removal steps of the dc-in bracket and dc-in cable assembly

1
1

Hardware Maintenance Manual

Step

Screw (quantity)

Color

Torque

M2 × L3.5 mm, flat-head, nylon-coated (2)

Silver

0.181 Nm
(1.85 kgf-cm)

When installing:
Ensure that the connector is attached firmly.
Attention: Do not route the dc-in cable on the hinge. Otherwise, the dc-in cable might get damaged when
the base cover assembly is installed.

1120 Built-in battery or dummy battery
Important notices for replacing a battery
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.

Chapter 7. Removing or replacing a FRU

The Lenovo Solution Center program provides an automatic battery diagnostic test that determines if the
battery is defective. A battery FRU should not be replaced unless this diagnostic test shows that the battery
is defective. The only exception to this is if the battery is physically damaged or a customer is reporting a
possible safety issue.
If the Lenovo Solution Center program is not installed on the computer, the customer should download and
install the program to diagnose the battery, before getting a non-physically damaged battery replaced. Note
that the replacement of a physically damaged battery is not covered by the warranty.
For access, remove this FRU:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
Removal steps of the built-in battery or dummy built-in battery
DANGER
Use only the authorized battery specified for your computer. Any other battery could ignite or
explode.
Note: If your computer does not come with a built-in battery, a dummy built-in battery is installed instead.
To remove the dummy built-in battery, you do not have to perform step 1 in the following illustration.

2
2

Step

Screw (quantity)

Color

Torque

M2 × L3.5 mm, flat-head, nylon-coated (5)

Silver

0.181 Nm
(1.85 kgf-cm)

Hardware Maintenance Manual

1130 Thermal fan
For access, remove this FRU:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
Removal steps of the thermal fan

1
2
3

When installing: Ensure that the fan connectors are attached firmly.

Chapter 7. Removing or replacing a FRU

Loosen the screws 5 in ascending alphabetical order as illustrated.
Note: The thermal fan on your computer might look differently. For some models, you might not have to
perform steps 5f and 5e in the following illustration.
6

5f
5c

5d
5b

Hardware Maintenance Manual

When installing: Do not touch the areas marked a and b in the following illustrations.

1140 Speaker assembly
For access, remove this FRU:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
• “1120 Built-in battery or dummy battery ” on page 73
Removal steps of the speaker assembly
2
2

2
1

Step

Screw (quantity)

Color

Torque

M2 × L2.5 mm, flat-head shoulder, nylon-coated (3)

Black

0.181 Nm
(1.85 kgf-cm)

When installing: Ensure that the connector is attached firmly.

Chapter 7. Removing or replacing a FRU

Cable routing: When you install the speaker assembly, route the cables as shown in the following illustration.

1150 Smart card assembly or dummy smart card
Depending on the model, your computer might have a smart card or a dummy smart card installed.
For access, remove these FRUs:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
• “1120 Built-in battery or dummy battery ” on page 73
• “1140 Speaker assembly” on page 77
Removal steps of the smart card assembly
1

3
3
3

When installing:
Ensure that the connector is attached firmly.

Hardware Maintenance Manual

3
3

Step

Screw (quantity)

Color

Torque

M2 × L3 mm, flat-head, nylon-coated (5)

Black

0.181 Nm
(1.85 kgf-cm)

Removal steps of the dummy smart card

1
2

Step

Screw (quantity)

Color

Torque

M2 × L3 mm, flat-head, nylon-coated (1)

Black

0.181 Nm
(1.85 kgf-cm)

1160 Fingerprint reader assembly
For access, remove these FRUs in order:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
• “1040 Storage-drive stabilizer bar, internal storage drive, hard disk drive cable, and hard disk drive
bracket” on page 66

Chapter 7. Removing or replacing a FRU

Removal steps of the fingerprint reader assembly
1

3
3

Step

Screw (quantity)

Color

Torque

M2 × L3 mm, flat-head, nylon-coated (2)

Black

0.181 Nm
(1.85 kgf-cm)

When installing: Ensure that the connector is attached firmly.
4

1170 Board for the trackpad and TrackPoint buttons
For access, remove this FRU:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
• “1120 Built-in battery or dummy battery ” on page 73

Hardware Maintenance Manual

Removal steps of the board for the trackpad and TrackPoint buttons
1

3
3

Step

Screw (quantity)

Color

Torque

M2 × L2 mm, flat-head shoulder, nylon-coated (4)

Black

0.181 Nm
(1.85 kgf-cm)

When installing: Ensure that the connector is attached firmly.

1180 System board assembly
Important notices for handling the system board
When handling the system board, read the following:
Chapter 7. Removing or replacing a FRU

• The system board has an accelerometer, which can be broken when several thousands of G-forces
are applied.
Note: Dropping a system board from a height of as little as six inches so that it falls flat on a hard bench
can subject the accelerometer to as much as 6000 G's of shock.
• 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.
For access, remove these FRUs in order:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
• “1040 Storage-drive stabilizer bar, internal storage drive, hard disk drive cable, and hard disk drive
bracket” on page 66
• “1060 Wireless LAN card” on page 68
• “1070 Wireless WAN card” on page 69
• “1130 Thermal fan” on page 75
• “1140 Speaker assembly” on page 77
Attention: The microprocessor a and GPU b soldered on the system board are extremely sensitive. When
you service the system board, avoid any kind of rough handling.
a

Hardware Maintenance Manual

Removal steps of the system board assembly
1

9
2

10
4
3
5

7
6
8

11
11

When installing: Ensure that the connectors are attached firmly.
Step

Screw (quantity)

Color

Torque

M2 × L3.5 mm, flat-head, nylon-coated (6)

Silver

0.181 Nm
(1.85 kgf-cm)

1190 LCD unit
For access, remove these FRUs in order:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59

Chapter 7. Removing or replacing a FRU

Removal steps of the LCD unit
1

3
3

5
11
4

6
6

When installing: When you route the cables, ensure that they are not subject to any tension. Tension could
cause the cables to be damaged by the cable guides, or a wire to be broken.
7

Hardware Maintenance Manual

Step

Screw (quantity)

Color

Torque

M2.5 × L3.5 mm, flat-head, nylon-coated (4)

Silver

0.181 Nm
(1.85 kgf-cm)

90°

1210 Power button board
For access, remove these FRUs in order:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
• “1040 Storage-drive stabilizer bar, internal storage drive, hard disk drive cable, and hard disk drive
bracket” on page 66
• “1060 Wireless LAN card” on page 68
• “1070 Wireless WAN card” on page 69
• “1120 Built-in battery or dummy battery ” on page 73
• “1130 Thermal fan” on page 75
• “1180 System board assembly” on page 81
• “1190 LCD unit” on page 83

Chapter 7. Removing or replacing a FRU

Removal steps of the power button board
1

Step

Screw (quantity)

Color

Torque

M2 × L3 mm, flat-head, nylon-coated (2)

Black

0.181 Nm
(1.85 kgf-cm)

When installing: Ensure that the connector is attached firmly.

1220 Keyboard assembly
Removal steps of the keyboard assembly
To
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•

replace the keyboard assembly, remove these FRUs in order:
“1010 Removable battery” on page 59
“1020 Base cover assembly” on page 59
“1030 Keyboard” on page 61
“1040 Storage-drive stabilizer bar, internal storage drive, hard disk drive cable, and hard disk drive
bracket” on page 66
“1060 Wireless LAN card” on page 68
“1070 Wireless WAN card” on page 69
“1080 M.2 solid-state drive” on page 70
“1090 Coin-cell battery” on page 71
“1110 dc-in bracket and dc-in cable assembly” on page 72
“1120 Built-in battery or dummy battery ” on page 73
“1130 Thermal fan” on page 75
“1140 Speaker assembly” on page 77
“1150 Smart card assembly or dummy smart card” on page 78
“1160 Fingerprint reader assembly” on page 79
“1170 Board for the trackpad and TrackPoint buttons” on page 80
“1180 System board assembly” on page 81
“1190 LCD unit” on page 83
“1210 Power button board” on page 85

Removing an LCD FRU for models without touch panel
This section provides instructions on how to remove an LCD FRU for models without touch panel.

Hardware Maintenance Manual

2010 LCD bezel assembly
Important: Once an LCD bezel assembly is removed, it cannot be used anymore. A new LCD bezel
assembly is required for replacement.
Removal steps of the LCD bezel assembly

When installing: Ensure that all the latches are attached firmly.

2020 LCD panel and LCD cable
For access, remove these FRUs in order:
• “1010 Removable battery” on page 59
• “2010 LCD bezel assembly” on page 87
Removal steps of LCD panel and LCD cable
1

2
1

Step

Screw (quantity)

Color

Torque

M2 × L2.5 mm, flat-head, nylon-coated (4)

Black

0.181 Nm
(1.85 kgf-cm)

Chapter 7. Removing or replacing a FRU

When installing:
• For Panasonic LCD, ensure that you apply the AL sheets a first, and then paste the sponges b on the top
of the AL sheets as shown in the following illustration.
a

• For other LCD, apply the sponges as shown in the following illustration.

Hardware Maintenance Manual

• Ensure the LCD connector is attached firmly.

2030 Hinges and hinge brackets
For access, remove these FRUs in order:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
• “1040 Storage-drive stabilizer bar, internal storage drive, hard disk drive cable, and hard disk drive
bracket” on page 66
• “1060 Wireless LAN card” on page 68
• “1070 Wireless WAN card” on page 69
• “1130 Thermal fan” on page 75
• “1180 System board assembly” on page 81
• “1190 LCD unit” on page 83
• “2010 LCD bezel assembly” on page 87
Removal steps of the hinges

Step

Screw (quantity)

Color

Torque

M2.5 × L2.5 mm, big-head, nylon-coated (6)

Silver

0.294 Nm
(3 kgf-cm)

Chapter 7. Removing or replacing a FRU

Removal steps of the hinge brackets

2040 Camera/microphone card
For access, remove these FRUs in order:
• “1010 Removable battery” on page 59
• “2010 LCD bezel assembly” on page 87
• “2020 LCD panel and LCD cable” on page 87

Hardware Maintenance Manual

Removal steps of the camera/microphone card

When installing: Ensure that the connector is attached firmly.

2050 LED cable assembly
For access, remove these FRUs in order:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
• “1040 Storage-drive stabilizer bar, internal storage drive, hard disk drive cable, and hard disk drive
bracket” on page 66
• “1060 Wireless LAN card” on page 68

Chapter 7. Removing or replacing a FRU

•
•
•
•
•
•
•

“1070
“1130
“1180
“1190
“2010
“2020
“2030

Wireless WAN card” on page 69
Thermal fan” on page 75
System board assembly” on page 81
LCD unit” on page 83
LCD bezel assembly” on page 87
LCD panel and LCD cable” on page 87
Hinges and hinge brackets” on page 89

Removal step of the LED cable assembly
1

2060 Antenna kit and LCD rear cover assembly
Removal steps of the antenna kit
For access, remove these FRUs in order:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
• “1040 Storage-drive stabilizer bar, internal storage drive, hard disk drive cable, and hard disk drive
bracket” on page 66
• “1060 Wireless LAN card” on page 68

Hardware Maintenance Manual

•
•
•
•
•
•
•

“1070
“1130
“1180
“1190
“2010
“2020
“2030

3
3

Chapter 7. Removing or replacing a FRU

Cable routing: When you install the antenna kit, route the cables as shown in the following illustration.
Ensure that the cables are not subject to any tension. Tension could cause the cables to be damaged by the
cable guides, or a wire to be broken.

Black cable (WLAN auxiliary)

Blue cable (WWAN auxiliary)

Orange cable (WWAN main)

Gray cable (WLAN main)

Antenna locations
a

Hardware Maintenance Manual

WLAN auxiliary antenna (black)

WWAN auxiliary antenna (blue)

WWAN main antenna (red)

WLAN main antenna (gray)

Removal steps of the LCD rear cover assembly
To replace the LCD rear cover assembly, remove these FRUs in order:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
• “1040 Storage-drive stabilizer bar, internal storage drive, hard disk drive cable, and hard disk drive
bracket” on page 66
• “1060 Wireless LAN card” on page 68
• “1070 Wireless WAN card” on page 69
• “1130 Thermal fan” on page 75
• “1180 System board assembly” on page 81
• “1190 LCD unit” on page 83
• “2010 LCD bezel assembly” on page 87
• “2020 LCD panel and LCD cable” on page 87
• “2030 Hinges and hinge brackets” on page 89
• “2040 Camera/microphone card” on page 90
• “2050 LED cable assembly” on page 91
• “Removal steps of the antenna kit” on page 92

Removing an LCD FRU for models with touch panel
This section provides instructions on how to remove an LCD FRU for models with touch panel.

3010 LCD front sheet bezel
Important: Once an LCD front sheet bezel is removed, it cannot be used anymore. A new LCD front
sheet bezel is required for replacement.
Removal steps of the LCD front sheet bezel

When installing: Ensure that all the latches are attached firmly.

3020 LCD panel assembly and LCD cable
For access, remove these FRUs in order:
Chapter 7. Removing or replacing a FRU

•
•

“1010 Removable battery” on page 59
“3010 LCD front sheet bezel” on page 95

Removal steps of the LCD panel assembly and LCD cable
The LCD panel assembly consists of an LCD panel and an LCD bezel. The LCD bezel is glued to the back
side of the LCD panel.
Important: Once an LCD bezel is removed, it cannot be used anymore. A new LCD bezel is required
for replacement.

1
3

4
5
4

Step

Screw (quantity)

Color

Torque

M2.5 × L4 mm, big-head, nylon-coated (3)

Silver

0.294 Nm
(3 kgf-cm)

Hardware Maintenance Manual

When installing: Ensure that the connector is attached firmly.

3030 Hinges
For access, remove these FRUs in order:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
• “1040 Storage-drive stabilizer bar, internal storage drive, hard disk drive cable, and hard disk drive
bracket” on page 66
• “1060 Wireless LAN card” on page 68
• “1070 Wireless WAN card” on page 69
• “1130 Thermal fan” on page 75
• “1180 System board assembly” on page 81
• “1190 LCD unit” on page 83
• “3010 LCD front sheet bezel” on page 95
• “3020 LCD panel assembly and LCD cable” on page 95
Removal steps of the hinges
1

Chapter 7. Removing or replacing a FRU

Step

Screw (quantity)

Color

Torque

M2.5 × L2.5 mm, big-head, nylon-coated (4)

Silver

0.294 Nm
(3 kgf-cm)

3040 Camera/microphone card
For access, remove these FRUs in order:
• “1010 Removable battery” on page 59
• “3010 LCD front sheet bezel” on page 95
• “3020 LCD panel assembly and LCD cable” on page 95
Removal steps of the camera/microphone card

When installing: Ensure that the connector is attached firmly.

Hardware Maintenance Manual

3050 Touch sensor card
For access, remove these FRUs in order:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
• “1040 Storage-drive stabilizer bar, internal storage drive, hard disk drive cable, and hard disk drive
bracket” on page 66
• “1060 Wireless LAN card” on page 68
• “1070 Wireless WAN card” on page 69
• “1130 Thermal fan” on page 75
• “1180 System board assembly” on page 81
• “1190 LCD unit” on page 83
• “3010 LCD front sheet bezel” on page 95
• “3020 LCD panel assembly and LCD cable” on page 95

Chapter 7. Removing or replacing a FRU

Removal steps of the touch sensor card

1
3

When installing: Ensure that all the connectors are attached firmly.

3060 LED cable assembly
For access, remove these FRUs in order:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
• “1040 Storage-drive stabilizer bar, internal storage drive, hard disk drive cable, and hard disk drive
bracket” on page 66
• “1060 Wireless LAN card” on page 68
• “1070 Wireless WAN card” on page 69
• “1130 Thermal fan” on page 75
• “1180 System board assembly” on page 81
• “1190 LCD unit” on page 83
• “3020 LCD panel assembly and LCD cable” on page 95
• “3030 Hinges” on page 97

100

Hardware Maintenance Manual

Removal step of the LED cable assembly
1

3070 Antenna kit and LCD rear cover assembly
Removal steps of the antenna kit
For access, remove these FRUs in order:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
• “1040 Storage-drive stabilizer bar, internal storage drive, hard disk drive cable, and hard disk drive
bracket” on page 66
• “1060 Wireless LAN card” on page 68
• “1070 Wireless WAN card” on page 69
• “1130 Thermal fan” on page 75
• “1180 System board assembly” on page 81
• “1190 LCD unit” on page 83
• “3020 LCD panel assembly and LCD cable” on page 95
• “3030 Hinges” on page 97

Chapter 7. Removing or replacing a FRU

101

3
3

102

Hardware Maintenance Manual

c
a

b
d

Black cable (WLAN auxiliary)

Blue cable (WWAN auxiliary)

Orange cable (WWAN main)

Gray cable (WLAN main)

Antenna locations
a

Chapter 7. Removing or replacing a FRU

103

WLAN auxiliary antenna (black)

WWAN auxiliary antenna (blue)

WWAN main antenna (orange)

WLAN main antenna (gray)

Removal steps of the LCD rear cover assembly
To replace the LCD rear cover assembly, remove these FRUs in order:
• “1010 Removable battery” on page 59
• “1020 Base cover assembly” on page 59
• “1040 Storage-drive stabilizer bar, internal storage drive, hard disk drive cable, and hard disk drive
bracket” on page 66
• “1060 Wireless LAN card” on page 68
• “1070 Wireless WAN card” on page 69
• “1130 Thermal fan” on page 75
• “1180 System board assembly” on page 81
• “1190 LCD unit” on page 83
• “3010 LCD front sheet bezel” on page 95
• “3020 LCD panel assembly and LCD cable” on page 95
• “3030 Hinges” on page 97
• “3040 Camera/microphone card” on page 98
• “3060 LED cable assembly” on page 100
• “Removal steps of the antenna kit ” on page 101

104

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.

105

Electronic emissions 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
ThinkPad
TrackPoint
ThinkPad logo
Microsoft and Windows are trademarks of the Microsoft group of companies.
Intel is a trademark of Intel Corporation in the U.S. and/or other countries.
Mini DisplayPort (mDP) and DisplayPort are trademarks of the Video Electronics Standards Association.
Other company, product, or service names may be the trademarks or service marks of others.

106

Hardware Maintenance Manual

Part Number: SP40G55010_02

Printed in

(1P) P/N: SP40G55010_02

*1PSP40G55010_02*

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Lenovo T550 W550S Hmm En Sp40G55010 02 User Manual (English) Hardware Maintenance Think Pad T550, Laptop (Think Pad)

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