Lenovo Mt 1872 Users Manual 1871/1872/1873/1874/1875/1876

MT 1876 to the manual 784f6f84-3310-4e15-9514-0c2e2e61d172

thinkpad t43

2015-01-24

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ThinkPad Computer
Hardware Maintenance Manual

July 2005

This manual supports:
ThinkPad T43
(MT 1871/1872/1873/1874/1875/1876)
ThinkPad Dock II (MT 2877)

Note
Before using this information and the product it
supports, be sure to read the general information
under “Notices” on page 213.

First Edition (July 2005)
© Copyright Lenovo 2005.
Portions © Copyright International Business Machines
Corporation 2005.
All rights reserved.
U.S. GOVERNMENT USERS – RESTRICTED RIGHTS:
Our products and/or services are provided with
RESTRICTED RIGHTS. Use, duplication or disclosure by
the Government is subject to the GSA ADP Schedule
contract with Lenovo Group Limited, if any, or the standard
terms of this commercial license, or if the agency is unable
to accept this Program under these terms, then we provide
this Program under the provisions set forth in Commercial
Computer Software–Restricted Rights at FAR 52.227-19,
when applicable, or under Rights in Data-General, FAR
52.227.14 (Alternate III).

Contents
About this manual

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Introduction . . . . . . . . . . . . . 3
Important service information . . . . . . . . . 3
Strategy for replacing FRUs . . . . . . . . . 3
Strategy for replacing a hard disk drive . . . . . 4
How to use error messages . . . . . . . . 4
Strategy for replacing FRUs for CTO, CMV, and GAV
4
Product definition . . . . . . . . . . . 4
FRU identification for CTO, CMV, and GAV products 5
Important information about replacing RoHS compliant
FRUs . . . . . . . . . . . . . . . 7
Diskette compatibility matrix . . . . . . . . . 8
Safety notices: multilingual translations . . . . . . 8
Safety information . . . . . . . . . . . . 20
General safety . . . . . . . . . . . . 20
Electrical safety . . . . . . . . . . . 21
Safety inspection guide . . . . . . . . . 23
Handling devices that are sensitive to electrostatic
discharge . . . . . . . . . . . . 24
Grounding requirements . . . . . . . . . 25
Laser compliance statement . . . . . . . . . 26
General descriptions . . . . . . . .
Read this first . . . . . . . . . . .
What to do first . . . . . . . . .
Related service information . . . . . . .
Service Web site . . . . . . . . .
Restoring the pre-installed system . . . .
Passwords . . . . . . . . . . .
Power management . . . . . . . .
Checkout guide . . . . . . . . . .
Testing the computer . . . . . . . .
Detecting system information with PC-Doctor .
Power system checkout . . . . . . .

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ThinkPad T43 Series .
Product overview . . .
Specifications . . .
Status indicators . .
FRU tests . . . .
Fn key combinations .
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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© Lenovo 2005. Portions © IBM Corp. 2005.

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iii

FRU replacement notices . . . . . . . . . 67
Screw notices . . . . . . . . . . . . 67
Retaining serial numbers. . . . . . . . . 68
Removing and replacing a FRU. . . . . . . . 71
1010 Battery pack (14.1-in. LCD models) . . . . 72
1020 Battery pack (15.0-in. LCD models) . . . . 74
1030 Ultrabay Slim device . . . . . . . . 75
1040 Hard disk drive . . . . . . . . . . 76
1050 DIMM (optional) . . . . . . . . . 78
1060 Keyboard . . . . . . . . . . . 80
1070 DIMM (standard) . . . . . . . . . 84
1080 Modem daughter card (MDC-2) . . . . . 85
1090 Bluetooth/Modem daughter card (BMDC-3)
87
1100 Palm rest or Palm rest with fingerprint reader
(14.1-in. LCD models) . . . . . . . . . 89
1110 Keyboard bezel or Keyboard bezel with
fingerprint reader (15.0-in. LCD models) . . . 92
1120 Mini PCI adapter . . . . . . . . . 98
1130 Fan assembly . . . . . . . . . . 100
1140 Backup battery . . . . . . . . . 104
1150 Speaker assembly . . . . . . . . 106
1160 Keyboard bezel (14.1-in. LCD models)
108
1170 PC Card/ExpressCard slots (14.1-in. LCD
models) . . . . . . . . . . . . 110
1180 PC Card/ExpressCard slots (15.0-in. LCD
models) . . . . . . . . . . . . 112
1190 LCD assembly (14.1-in. LCD models) . . . 114
1200 LCD assembly (15.0-in. LCD models) . . . 119
1210 CPU . . . . . . . . . . . . 124
1220 Ultrabay Slim guide rail assembly (14.1-in.
LCD models) . . . . . . . . . . . 125
1230 Ultrabay Slim guide rail assembly (15.0-in.
LCD models) . . . . . . . . . . . 127
1240 VGA and Ultrabay Slim device eject button
cable . . . . . . . . . . . . . 130
1250 System board and base cover (14.1-in. LCD
models) . . . . . . . . . . . . 132
1260 System board, interposer card, and base
cover (15.0-in. LCD models) . . . . . . 140
2010 LCD front bezel (14.1-in. LCD models)
148
2020 LCD front bezel (15.0-in. LCD models)
150
2030 Inverter card (14.1-in. LCD models) . . . 152
2040 Inverter card (15.0-in. LCD models) . . . 154
2050 Wireless antenna assemblies, LCD panel,
LCD cable assembly, hinges, and LCD cover
(14.1-in. LCD models) . . . . . . . . 155
2060 Wireless antenna assemblies, LCD panel,
LCD cable assembly, hinges, and LCD cover
(15.0-in. LCD models) . . . . . . . . 169
3010 ThinkPad Dock II PCI cover . . . . . . 176
3020 ThinkPad Dock II top cover . . . . . . 177
Locations . . . . . . . . . . . . . . 180
Front view . . . . . . . . . . . . 180

iv

MT 1871/1872/1873/1874/1875/1876

Rear view . . . .
Bottom view . . .
Parts list . . . . .
Overall . . . .
14.1-in. LCD FRUs .
15.0-in. LCD FRUs .
Keyboard . . . .
Recovery CDs . .
Miscellaneous parts .
AC adapters . . .
Optional FRUs . .
Common parts list .
Notices . . . . .
Trademarks . . . .

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182
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213
215

Contents

v

vi

MT 1871/1872/1873/1874/1875/1876

About this manual
This manual contains service and reference information for
ThinkPad® T43 series (MT 1871, 1872, 1873, 1874, 1875,
and 1876), and ThinkPad Dock II (MT 2877) products. Use
this manual along with the advanced diagnostic tests to
troubleshoot problems.
The manual is divided into sections as follows:
v The common sections provide general information,
guidelines, and safety information required in servicing
computers.
v The product-specific section includes service, reference,
and product-specific parts information.

Important
This manual is intended for trained service
personnel 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
review the safety information under “Safety notices:
multilingual translations” on page 8, “Safety
information” on page 20, and “Laser compliance
statement” on page 26.

© Lenovo 2005. Portions © IBM Corp. 2005.

1

2

MT 1871/1872/1873/1874/1875/1876

Introduction
Important service information
Important
BIOS and device driver fixes are
customer-installable. The BIOS and device drivers
are posted on the customer support site
http://www.lenovo.com/think/ support
Advise customers to contact the Customer Support
Center at 800-426-7378 if they need assistance in
obtaining or installing any diskette fixes.
Customers in Canada should call the Customer
Support Center at 800-565-3344 for assistance or
download information.

Strategy for replacing FRUs
Before replacing parts
Make sure that all diskette fixes are installed before
replacing any FRUs listed in this manual.
Use the following strategy to prevent unnecessary expense
for replacing and servicing FRUs:
v If you are instructed to replace a FRU but the
replacement does not correct the problem, reinstall
the original FRU before you continue.
v 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.
v If an adapter or a device consists of more than one
FRU, any of the FRUs may be the cause of the error.
Before replacing the adapter or device, remove the
FRUs, one by one, to see if the symptoms change.
Replace only the FRU that changed the symptoms.
Attention: The setup configuration on the computer you
are servicing may have been customized. Running
Automatic Configuration may alter the settings. Note the
current configuration settings (using the View Configuration
option); then, when service has been completed, verify that
those settings remain in effect.

© Lenovo 2005. Portions © IBM Corp. 2005.

3

Important service information

Strategy for replacing a hard disk drive
Always try to run a low-level format before replacing a hard
disk drive.
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.

How to use error messages
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,
CMV, and GAV
Product definition
Dynamic Configure To Order (CTO)
This provides the ability for a customer to configure an
IBM® solution from an eSite, and have this configuration
sent to fulfillment, where it is built and shipped directly to
the customer. The machine label, PC Entitlement
Warehouse (PEW), eSupport, and the HMM will load these
products as the 4-digit MT and 3-digit model, where model
= “CTO” (Example: 1829-CTO).
Custom Model Variant (CMV)
This is a unique configuration that has been negotiated
between IBM and the customer. A unique 4-digit MT and
3-digit model is provided to the customer to place orders
(Example: 1829-W15). A CMV is a special bid offering.
Therefore, it is NOT generally announced.
v The MTM portion of the machine label is the 4-digit MT
and 3-digit model, where model = “CTO” (Example:
1829-CTO). The PRODUCT ID portion of the machine
label is the 4-digit MT and 3-digit CMV model (Example:
1829-W15).
v The PEW record is the 4-digit MT and 3-digit model,
where model = “CTO” (Example: 1829-CTO).
v eSupport will show both the CTO and CMV machine
type models (Example: 1829-CTO and 1829-W15 will be
found on the eSupport site.)

4

MT 1871/1872/1873/1874/1875/1876

Important service information

v The HMM will have the 4-digit MT and 3-digit CTO
model only (Example: 1829-CTO). Again, CMVs are
custom models and are not found in the HMM.
General Announce Variant (GAV)
This is a standard model (fixed configuration). GAVs are
announced and offered to all customers. The MTM portion
of the machine label is a 4-digit MT and 3-digit model,
where model = a “fixed part number”, not “CTO” (Example:
1829-F1U). Also, PEW, eSupport, and the HMM will list
these products under the same fixed model number.

FRU identification for CTO, CMV, and
GAV products
There are three information resources to identify which
FRUs are used to support CTO, CMV, and GAV products.
These sources are PEW, eSupport, and the HMM.

Using PEW
v PEW is the primary source for identifying FRU part
numbers and FRU descriptions for the key commodities
for CTO, CMV and GAV products at a MT - serial
number level. An example of key commodities are hard
disk drives, system boards, microprocessors, Liquid
Crystal Displays (LCDs), and memory.
v Remember, All CTO and CMV products are loaded in
PEW under the 4-digit MT and 3-digit model, where
model = “CTO” (Example: 1829-CTO). GAVs are loaded
in PEW under the 4-digit MT and 3-digit model, where
model = a “fixed part number”, not “CTO” (Example:
1829-F1U).
v PEW can be accessed at the following Web site:
http://w3-3.ibm.com/pc/entitle
Click on MACHINE LOOKUP, followed by WARRANTY
INFORMATION. Input the MT and the Serial number
and the list of key commodities will be returned in the
PEW record under COMPONENT INFORMATION.
v Business Partners using Eclaim will access PEW when
performing Entitlement Lookup. Business Partners will
enter Loc ID, MT and Serial, and the key commodities
will be returned in the Eclaim record under SYSTEM
DETAILS.
v Authorized IBM Business Partners can access Eclaim at
the following Web site: https://wca.eclaim.com

Using eSupport
For Key Commodities (Examples - hard disk drive,
system board, microprocessor, LCD, and memory)

Introduction

5

Important service information

v eSupport can be used to view the list of key
commodities built in a particular machine serial (this is
the same record found in PEW).
v eSupport can be accessed at the following Web site:
http://www.lenovo.com/think/ support
v To view the key commodities, click on PARTS
INFORMATION, then PARTS LOOKUP. Type in the
model type and serial number. The key commodities will
be returned in the eSupport record under PARTS
SHIPPED WITH YOUR SYSTEM.
For the Remaining FRUs (the complete list of FRUs at
the MT Model level)
v eSupport can be used to view the complete list of FRUs
for a machine type and model.
v To view the complete list of FRUs, type in the machine
type and model (Example: 1829-CTO) under QUICK
PATH. Under “View by Document Type” select PARTS
INFORMATION. Under “Filter by Category” select
SERVICE PARTS. Under “Parts Information by Date”
select SYSTEM SERVICE PARTS. The list of service
parts by description, with applicable machine type model
and FRU will be displayed.

Using the HMM
Use the HMM as a back-up to PEW and eSupport to view
the complete list of FRUs at the MT Model level.

6

MT 1871/1872/1873/1874/1875/1876

Important service information

Important information about replacing
RoHS compliant FRUs
RoHS, The Restriction of Hazardous Substances in
Electrical and Electronic Equipment Directive
(2002/95/EC) is a European Union legal requirement
affecting the global electronics industry. RoHS
requirements must be implemented on Lenovo
products placed on the market after June 2006.
Products on the market before June 2006 are not
required to have RoHS compliant parts. So, if the
original FRU parts are non compliant, replacement
parts can also be non compliant. In all cases if the
original FRU parts are RoHS compliant the
replacement part must also be RoHS compliant.
Lenovo plans to transition to RoHS compliance well before
the implementation date and expects its suppliers to be
ready to support Lenovo's requirements and schedule.
Products sold in 2005, will contain some RoHS compliant
FRUs. The following statement pertains to these products
and any product Lenovo produces containing RoHS
compliant FRUs.
RoHS compliant FRUs have unique FRU part numbers.
Before or after the RoHS implementation date , failed
RoHS compliant parts must always be replaced using
RoHS compliant FRUs, so only the FRUs identified as
compliant in the system HMM or direct substitutions for
those FRUs may be used.

Introduction

7

Important service information
Products marketed before
June 2006

Products marketed after June
2006

Current or
original part

Replacement
FRU

Current or
original part

Replacement
FRU

Non-RoHS

Can be
Non-RoHS

Must be RoHS

Must be RoHS

Non-RoHS

Can be RoHS

Non-RoHS

Can sub to
RoHS

RoHS

Must be RoHS

Note: A direct substitution is a part with a different FRU
part number that is automatically shipped by the
distribution center at the time of the order.
Related web URLs are:
v IBM Information for Suppliers website:
http://www-03.ibm.com/procurement/proweb.nsf/
ContentDocsByTitle/United+States~Information+for
+suppliers
v RoHS Directive:
http://europa.eu.int/eur-lex/pri/en/oj/dat/2003/
l_037/l_03720030213en00190023.pdf
v California Senate Bills 20, 50:
http://www.ciwmb.ca.gov/HHW/Events/AnnualConf/
2004/Presentation/MPaparian.pdf

Diskette compatibility matrix
The compatibility of each of the drives with the diskettes
for it is as follows:
Diskette
drive

Diskette
capacity

Compatibility

3.5-inch

1.0 MB

Read and write

2.0 MB

Read and write

4.0 MB

Not compatible

Safety notices: multilingual translations
In this manual, safety notices appear in English with a
page number reference to the appropriate multilingual,
translated safety notice found in this section.
The following safety notices are provided in English,
French, German, Hebrew, Italian, and Spanish.

8

MT 1871/1872/1873/1874/1875/1876

Safety notices

Safety notice 1

Before the computer is powered on after FRU
replacement, make sure all screws, springs, and other
small parts are in place and are not left loose inside
the computer. Verify this by shaking the computer and
listening for rattling sounds. Metallic parts or metal
flakes can cause electrical shorts.
Avant de remettre l’ordinateur sous tension après
remplacement d’une unité en clientèle, vérifiez que
tous les ressorts, vis et autres pièces sont bien en
place et bien fixées. Pour ce faire, secouez l’unité et
assurez-vous qu’aucun bruit suspect ne se produit. Des
pièces métalliques ou des copeaux de métal pourraient
causer un court-circuit.
Bevor nach einem FRU-Austausch der Computer
wieder angeschlossen wird, muß sichergestellt werden,
daß keine Schrauben, Federn oder andere Kleinteile
fehlen oder im Gehäuse vergessen wurden. Der
Computer muß geschüttelt und auf Klappergeräusche
geprüft werden. Metallteile oder-splitter können
Kurzschlüsse erzeugen.

Prima di accendere l’elaboratore dopo che é stata
effettuata la sostituzione di una FRU, accertarsi che
tutte le viti, le molle e tutte le altri parti di piccole
dimensioni siano nella corretta posizione e non siano
sparse all’interno dell’elaboratore. Verificare ciò
scuotendo l’elaboratore e prestando attenzione ad
eventuali rumori; eventuali parti o pezzetti metallici
possono provocare cortocircuiti pericolosi.
Antes de encender el sistema despues de sustituir una
FRU, compruebe que todos los tornillos, muelles y
demás piezas pequeñas se encuentran en su sitio y no
se encuentran sueltas dentro del sistema.
Compruébelo agitando el sistema y escuchando los
posibles ruidos que provocarían. Las piezas metálicas
pueden causar cortocircuitos eléctricos.

Introduction

9

Safety notices

Safety notice 2

DANGER

Some standby batteries contain a small amount of
nickel and cadmium. Do not disassemble a standby
battery, recharge it, throw it into fire or water, or
short-circuit it. Dispose of the battery as required
by local ordinances or regulations. Use only the
battery in the appropriate parts listing. Use of an
incorrect battery can result in ignition or explosion
of the battery.
Certaines batteries de secours contiennent du
nickel et du cadmium. Ne les démontez pas, ne les
rechargez pas, ne les exposez ni au feu ni à l’eau.
Ne les mettez pas en court-circuit. Pour les mettre
au rebut, conformez-vous à la réglementation en
vigueur. Lorsque vous remplacez la pile de
sauvegarde ou celle de l’horloge temps réel, veillez
à n’utiliser que les modèles cités dans la liste de
pièces détachées adéquate. Une batterie ou une
pile inappropriée risque de prendre feu ou
d’exploser.
Die Bereitschaftsbatterie, die sich unter dem
Diskettenlaufwerk befindet, kann geringe Mengen
Nickel und Cadmium enthalten. Sie darf nur durch
die Verkaufsstelle oder den IBM Kundendienst
ausgetauscht werden. Sie darf nicht zerlegt,
wiederaufgeladen, kurzgeschlossen, oder Feuer
oder Wasser ausgesetzt werden. Die Batterie kann
schwere Verbrennungen oder Verätzungen
verursachen. Bei der Entsorgung die örtlichen
Bestimmungen für Sondermüll beachten. Beim
Ersetzen der Bereitschafts-oder Systembatterie nur
Batterien des Typs verwenden, der in der
Ersatzteilliste aufgeführt ist. Der Einsatz falscher
Batterien kann zu Entzündung oder Explosion
führen.
(continued)

10

MT 1871/1872/1873/1874/1875/1876

Safety notices

(continuation of safety notice 2)

Alcune batterie di riserva contengono una piccola
quantità di nichel e cadmio. Non smontarle,
ricaricarle, gettarle nel fuoco o nell’acqua né
cortocircuitarle. Smaltirle secondo la normativa in
vigore (DPR 915/82, successive disposizioni e
disposizioni locali). Quando si sostituisce la
batteria dell’RTC (real time clock) o la batteria di
supporto, utilizzare soltanto i tipi inseriti
nell’appropriato Catalogo parti. L’impiego di una
batteria non adatta potrebbe determinare l’incendio
o l’esplosione della batteria stessa.
Algunas baterías de reserva contienen una
pequeña cantidad de níquel y cadmio. No las
desmonte, ni recargue, ni las eche al fuego o al
agua ni las cortocircuite. Deséchelas tal como
dispone la normativa local. Utilice sólo baterías que
se encuentren en la lista de piezas. La utilización
de una batería no apropiada puede provocar la
ignición o explosión de la misma.

Introduction

11

Safety notices

Safety notice 3

DANGER

The battery pack contains small amounts of nickel.
Do not disassemble it, throw it into fire or water, or
short-circuit it. Dispose of the battery pack as
required by local ordinances or regulations. Use
only the battery in the appropriate parts listing
when replacing the battery pack. Use of an
incorrect battery can result in ignition or explosion
of the battery.
La batterie contient du nickel. Ne la démontez pas,
ne l’exposez ni au feu ni à l’eau. Ne la mettez pas
en court-circuit. Pour la mettre au rebut,
conformez-vous à la réglementation en vigueur.
Lorsque vous remplacez la batterie, veillez à
n’utiliser que les modèles cités dans la liste de
pièces détachées adéquate. En effet, une batterie
inappropriée risque de prendre feu ou d’exploser.
Akkus enthalten geringe Mengen von Nickel. Sie
dürfen nicht zerlegt, wiederaufgeladen,
kurzgeschlossen, oder Feuer oder Wasser
ausgesetzt werden. Bei der Entsorgung die
örtlichen Bestimmungen für Sondermüll beachten.
Beim Ersetzen der Batterie nur Batterien des Typs
verwenden, der in der Ersatzteilliste aufgeführt ist.
Der Einsatz falscher Batterien kann zu Entzündung
oder Explosion führen.

(continued)

12

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Safety notices

(continuation of safety notice 3)
La batteria contiene piccole quantità di nichel. Non
smontarla, gettarla nel fuoco o nell’acqua né
cortocircuitarla. Smaltirla secondo la normativa in
vigore (DPR 915/82, successive disposizioni e
disposizioni locali). Quando si sostituisce la
batteria, utilizzare soltanto i tipi inseriti
nell’appropriato Catalogo parti. L’impiego di una
batteria non adatta potrebbe determinare l’incendio
o l’esplosione della batteria stessa.
Las baterías contienen pequeñas cantidades de
níquel. No las desmonte, ni recargue, ni las eche al
fuego o al agua ni las cortocircuite. Deséchelas tal
como dispone la normativa local. Utilice sólo
baterías que se encuentren en la lista de piezas al
sustituir la batería. La utilización de una batería no
apropiada puede provocar la ignición o explosión
de la misma.

Introduction

13

Safety notices

Safety notice 4

DANGER

The lithium battery can cause a fire, an explosion,
or a severe burn. Do not recharge it, remove its
polarized connector, disassemble it, heat it above
100°C (212°F), incinerate it, or expose its cell
contents to water. Dispose of the battery as
required by local ordinances or regulations. Use
only the battery in the appropriate parts listing. Use
of an incorrect battery can result in ignition or
explosion of the battery.
La pile de sauvegarde contient du lithium. Elle
présente des risques d’incendie, d’explosion ou de
brûlures graves. Ne la rechargez pas, ne retirez pas
son connecteur polarisé et ne la démontez pas. Ne
l’exposez pas à une temperature supérieure à
100°C, ne la faites pas brûler et n’en exposez pas
le contenu à l’eau. Mettez la pile au rebut
conformément à la réglementation en vigueur. Une
pile inappropriée risque de prendre feu ou
d’exploser.
Die Systembatterie ist eine Lithiumbatterie. Sie
kann sich entzünden, explodieren oder schwere
Verbrennungen hervorrufen. Batterien dieses Typs
dürfen nicht aufgeladen, zerlegt, über 100 C erhitzt
oder verbrannt werden. Auch darf ihr Inhalt nicht
mit Wasser in Verbindung gebracht oder der zur
richtigen Polung angebrachte Verbindungsstecker
entfernt werden. Bei der Entsorgung die örtlichen
Bestimmungen für Sondermüll beachten. Beim
Ersetzen der Batterie nur Batterien des Typs
verwenden, der in der Ersatzteilliste aufgeführt ist.
Der Einsatz falscher Batterien kann zu Entzündung
oder Explosion führen.
(continued)

14

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Safety notices

(continuation of safety notice 4)

La batteria di supporto e una batteria al litio e puo
incendiarsi, esplodere o procurare gravi ustioni.
Evitare di ricaricarla, smontarne il connettore
polarizzato, smontarla, riscaldarla ad una
temperatura superiore ai 100 gradi centigradi,
incendiarla o gettarla in acqua. Smaltirla secondo
la normativa in vigore (DPR 915/82, successive
disposizioni e disposizioni locali). L’impiego di una
batteria non adatta potrebbe determinare l’incendio
o l’esplosione della batteria stessa.
La batería de repuesto es una batería de litio y
puede provocar incendios, explosiones o
quemaduras graves. No la recargue, ni quite el
conector polarizado, ni la desmonte, ni caliente por
encima de los 100°C (212°F), ni la incinere ni
exponga el contenido de sus celdas al agua.
Deséchela tal como dispone la normativa local.

Introduction

15

Safety notices

Safety notice 5

If the LCD breaks and the fluid from inside the LCD
gets into your eyes or on your hands, immediately
wash the affected areas with water for at least 15
minutes. Seek medical care if any symptoms from the
fluid are present after washing.
Si le panneau d’affichage à cristaux liquides se brise et
que vous recevez dans les yeux ou sur les mains une
partie du fluide, rincez-les abondamment pendant au
moins quinze minutes. Consultez un médecin si des
symptômes persistent après le lavage.
Die Leuchtstoffröhre im LCD-Bildschirm enthält
Quecksilber. Bei der Entsorgung die örtlichen
Bestimmungen für Sondermüll beachten. Der
LCD-Bildschirm besteht aus Glas und kann zerbrechen,
wenn er unsachgemäß behandelt wird oder der
Computer auf den Boden fällt. Wenn der Bildschirm
beschädigt ist und die darin befindliche Flüssigkeit in
Kontakt mit Haut und Augen gerät, sollten die
betroffenen Stellen mindestens 15 Minuten mit Wasser
abgespült und bei Beschwerden anschließend ein Arzt
aufgesucht werden.

Nel caso che caso l’LCD si dovesse rompere ed il
liquido in esso contenuto entrasse in contatto con gli
occhi o le mani, lavare immediatamente le parti
interessate con acqua corrente per almeno 15 minuti;
poi consultare un medico se i sintomi dovessero
permanere.
Si la LCD se rompe y el fluido de su interior entra en
contacto con sus ojos o sus manos, lave
inmediatamente las áreas afectadas con agua durante
15 minutos como mínimo. Obtenga atención medica si
se presenta algún síntoma del fluido despues de
lavarse.

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Safety notices

Safety notice 6

DANGER

To avoid shock, do not remove the plastic cover
that protects the lower part of the inverter card.
Afin d’éviter tout risque de choc électrique, ne
retirez pas le cache en plastique protégeant la
partie inférieure de la carte d’alimentation.
Aus Sicherheitsgründen die Kunststoffabdeckung,
die den unteren Teil der Spannungswandlerplatine
umgibt, nicht entfernen.

Per evitare scosse elettriche, non rimuovere la
copertura in plastica che avvolge la parte inferiore
della scheda invertitore.
Para evitar descargas, no quite la cubierta de
plástico que rodea la parte baja de la tarjeta
invertida.

Introduction

17

Safety notices

Safety notice 7

DANGER

Though the main batteries have low voltage, a
shorted or grounded battery can produce enough
current to burn personnel or combustible materials.
Bien que le voltage des batteries principales soit
peu élevé, le court-circuit ou la mise à la masse
d’une batterie peut produire suffisamment de
courant pour brûler des matériaux combustibles ou
causer des brûlures corporelles graves.
Obwohl Hauptbatterien eine niedrige Spannung
haben, können sie doch bei Kurzschluß oder
Erdung genug Strom abgeben, um brennbare
Materialien zu entzünden oder Verletzungen bei
Personen hervorzurufen.

Sebbene le batterie di alimentazione siano a basso
voltaggio, una batteria in corto circuito o a massa
può fornire corrente sufficiente da bruciare
materiali combustibili o provocare ustioni ai tecnici
di manutenzione.
Aunque las baterías principales tienen un voltaje
bajo, una batería cortocircuitada o con contacto a
tierra puede producir la corriente suficiente como
para quemar material combustible o provocar
quemaduras en el personal.

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Safety notices

Safety notice 8

DANGER

Before removing any FRU, power off the computer,
unplug all power cords from electrical outlets,
remove the battery pack, and then disconnect any
interconnecting cables.
Avant de retirer une unité remplaçable en clientèle,
mettez le système hors tension, débranchez tous
les cordons d’alimentation des socles de prise de
courant, retirez la batterie et déconnectez tous les
cordons d’interface.
Die Stromzufuhr muß abgeschaltet, alle Stromkabel
aus der Steckdose gezogen, der Akku entfernt und
alle Verbindungskabel abgenommen sein, bevor
eine FRU entfernt wird.

Prima di rimuovere qualsiasi FRU, spegnere il
sistema, scollegare dalle prese elettriche tutti i cavi
di alimentazione, rimuovere la batteria e poi
scollegare i cavi di interconnessione.
Antes de quitar una FRU, apague el sistema,
desenchufe todos los cables de las tomas de
corriente eléctrica, quite la batería y, a
continuación, desconecte cualquier cable de
conexión entre dispositivos.

Introduction

19

Safety information

Safety information
The following section presents safety information with
which you need to be familiar before you service a
ThinkPad computer.

General safety
Follow these rules to ensure general safety:
v Observe good housekeeping in the area of the
machines during and after maintenance.
v When lifting any heavy object:
1. Make sure that you can stand safely without
slipping.
2. Distribute the weight of the object equally between
your feet.
3. Use a slow lifting force. Never move suddenly or
twist when you attempt to lift.
4. Lift by standing or by pushing up with your leg
muscles; this action removes the strain from the
muscles in your back. Do not attempt to lift any
object that weighs more than 16 kg (35 lb) or that
you think is too heavy for you.
v Do not perform any action that causes hazards to the
customer, or that makes the equipment unsafe.
v Before you start the machine, make sure that other
service representatives and the customer’s personnel
are not in a hazardous position.
v Place removed covers and other parts in a safe place,
away from all personnel, while you are servicing the
machine.
v Keep your toolcase away from walk areas so that other
people will not trip over it.
v 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.
v 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.
v Do not wear jewelry, chains, metal-frame eyeglasses, or
metal fasteners for your clothing.
Attention: Metal objects are good electrical
conductors.
v 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.

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Safety information

v After service, reinstall all safety shields, guards, labels,
and ground wires. Replace any safety device that is
worn or defective.
v Reinstall all covers correctly before returning the
machine to the customer.
v Fan louvers on the machine help to prevent overheating
of internal components. Do not obstruct fan louvers or
cover them with labels or stickers.

WARNING
Handling the cord on this product or cords
associated with accessories sold with this product
will expose you to lead, a chemical known to the
State of California to cause cancer, and birth defects
or other reproductive harm. Wash hands after
handling.

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.
v 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.
v Do not work alone under hazardous conditions or near
equipment that has hazardous voltages.
v Disconnect all power before:
– Performing a mechanical inspection
– Working near power supplies
– Removing or installing main units
v 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.
v If you need to work on a machine that has exposed
electrical circuits, observe the following precautions:
Introduction

21

Safety information

– Ensure that another person, familiar with the
power-off controls, is near you.
Attention: Another person must be there to switch
off the power, if necessary.
– Use only one hand when working with powered-on
electrical equipment; keep the other hand in your
pocket or behind your back.
Attention: An electrical shock can occur only when
there is a complete circuit. By observing the above
rule, you may prevent a current from passing through
your body.
– When using testers, set the controls correctly and
use the approved probe leads and accessories for
that tester.
– Stand on suitable rubber mats (obtained locally, if
necessary) to insulate you from grounds such as
metal floor strips and machine frames.
Observe the special safety precautions when you work
with very high voltages; Instructions for these
precautions are in the safety sections of maintenance
information. Use extreme care when measuring high
voltages.
v Regularly inspect and maintain your electrical hand tools
for safe operational condition.
v Do not use worn or broken tools and testers.
v Never assume that power has been disconnected from
a circuit. First, check that it has been powered off.
v 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.
v 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.
v 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
and similar units. (This practice ensures correct
grounding of the units.)
v If
–
–
–

22

an electrical accident occurs:
Use caution; do not become a victim yourself.
Switch off power.
Send another person to get medical aid.

MT 1871/1872/1873/1874/1875/1876

Safety information

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 personnel 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.
Consider these conditions and the safety hazards they
present:
v Electrical hazards, especially primary power (primary
voltage on the frame can cause serious or fatal
electrical shock)
v Explosive hazards, such as a damaged CRT face or a
bulging capacitor
v 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 type specified in the
parts list.
c. Insulation must not be frayed or worn.
4. Remove the cover.
5. Check for any obvious non-ThinkPad alterations. Use
good judgment as to the safety of any non-ThinkPad
alterations.
6. 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.
7. Check for worn, frayed, or pinched cables.

Introduction

23

Safety information

8. 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:
v Keep the parts in protective packages until they are
inserted into the product.
v Avoid contact with other people.
v Wear a grounded wrist strap against your skin to
eliminate static on your body.
v Prevent the part from touching your clothing. Most
clothing is insulative and retains a charge even when
you are wearing a wrist strap.
v Use the black side of a grounded work mat to provide a
static-free work surface. The mat is especially useful
when handling ESD-sensitive devices.
v Select a grounding system, such as those listed below,
to provide protection that meets the specific service
requirement.

Note
The use of a grounding system to guard against
ESD damage is desirable but not necessary.
– Attach the ESD ground clip to any frame ground,
ground braid, or green-wire ground.
– When working on a double-insulated or
battery-operated system, use an ESD common
ground or reference point. You can use coax or
connector-outside shells on these systems.

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Safety information

– 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.

Introduction

25

Laser compliance statement

Laser compliance statement
Some models of ThinkPad computer are equipped from
the factory with an optical storage device such as a
CD-ROM drive or a DVD-ROM drive. Such devices are
also sold separately as options. If one of these drives is
installed, it is certified in the U.S. to conform to the
requirements of the Department of Health and Human
Services 21 Code of Federal Regulations (DHHS 21 CFR)
Subchapter J for Class 1 laser products. Elsewhere, the
drive is certified to conform to the requirements of the
International Electrotechnical Commission (IEC) 825 and
CENELEC EN 60 825 for Class 1 laser products.

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Laser compliance statement

If a CD-ROM drive, a DVD-ROM drive, or another laser
device is installed, note the following:

CAUTION:

Use of controls or adjustments or performance of
procedures other than those specified herein might
result in hazardous radiation exposure.
O uso de controles, ajustes ou desempenho de
procedimentos diferentes daqueles aqui
especificados pode resultar em perigosa exposição
à radiação.

Pour éviter tout risque d’exposition au rayon laser,
respectez les consignes de réglage et d’utilisation
des commandes, ainsi que les procédures décrites.
Werden Steuer- und Einstellelemente anders als
hier festgesetzt verwendet, kann gefährliche
Laserstrahlung auftreten.

L’utilizzo di controlli, regolazioni o l’esecuzione di
procedure diverse da quelle specificate possono
provocare l’esposizione a.

El uso de controles o ajustes o la ejecución de
procedimientos distintos de los aquí especificados
puede provocar la exposición a radiaciones
peligrosas.

Opening the CD-ROM drive, the DVD-ROM drive, or any
other optical storage device could result in exposure to
hazardous laser radiation. There are no serviceable parts
inside those drives. Do not open.

Introduction

27

Laser compliance statement

A CD-ROM drive, a DVD-ROM drive, or any other storage
device installed may contain an embedded Class 3A or
Class 3B laser diode. Note the following:

DANGER

Emits visible and invisible laser radiation when
open. Do not stare into the beam, do not view
directly with optical instruments, and avoid direct
exposure to the beam.
Radiação por raio laser ao abrir. Não olhe fixo no
feixe de luz, não olhe diretamente por meio de
instrumentos óticos e evite exposição direta com o
feixe de luz.

Rayonnement laser si carter ouvert. Évitez de fixer
le faisceau, de le regarder directement avec des
instruments optiques, ou de vous exposer au
rayon.
Laserstrahlung bei geöffnetem Gerät. Nicht direkt
oder über optische Instrumente in den Laserstrahl
sehen und den Strahlungsbereich meiden.
Kinyitáskor lézersugár ! Ne nézzen bele se szabad
szemmel, se optikai eszközökkel. Kerülje a
sugárnyalábbal való érintkezést !.
Aprendo l’unità vengono emesse radiazioni laser.
Non fissare il fascio, non guardarlo direttamente
con strumenti ottici e evitare l’esposizione diretta al
fascio.

Radiación láser al abrir. No mire fijamente ni
examine con instrumental óptico el haz de luz.
Evite la exposición directa al haz.

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General descriptions
The desciptions in this chapter apply to any ThinkPad
model that has the PC-Doctor® for DOS diagnostics
program. Some descriptions might not apply to your
particular computer.

Read this first
Before you go to the checkout guide, be sure to read this
section.

Important notes
v Only certified trained personnel should
service the computer.
v Before replacing any FRU, read the entire
page on removing and replacing FRUs.
v When you replace FRUs, use new
nylon-coated screws.
v Be extremely careful during such write
operations as copying, saving, or formatting.
Drives in the computer that you are servicing
sequence might have been altered. If you select
an incorrect drive, data or programs might be
overwritten.
v Replace an FRU only with another FRU of the
correct model. When you replace a FRU, make
sure that the model of the machine and the FRU
part number are correct by referring to the FRU
parts list.
v A FRU should not be replaced because of a
single, unreproducible failure. Single failures
can occur for a variety of reasons that have
nothing to do with a hardware defect, such as
cosmic radiation, electrostatic discharge, or
software errors. Consider replacing a FRU only
when a problem recurs. If you suspect that a
FRU is defective, clear the error log and run the
test again. If the error does not recur, do not
replace the FRU.
v Be careful not to replace a nondefective FRU.

What to do first
When you do return a FRU, you must include the following
information in the parts exchange form or parts return form
that you attach to it:
__ 1. Name and phone number of servicer
© Lenovo 2005. Portions © IBM Corp. 2005.

29

Read this first

__ 2.
__ 3.
__ 4.
__ 5.
__ 6.
__ 7.
__ 8.
__ 9.

Date of service
Date on which the machine failed
Date of purchase
Failure symptoms, error codes appearing on the
display, and beep symptoms
Procedure index and page number in which the
failing FRU was detected
Failing FRU name and part number
Machine type, model number, and serial number
Customer’s name and address

Note for warranty:
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:
v LCD panel cracked from the application of excessive
force or from being dropped
v Scratched (cosmetic) parts
v Distortion, deformation, or discoloration of the cosmetic
parts
v Plastic parts, latches, pins, or connectors that have
been cracked or broken by excessive force
v Damage caused by liquid spilled into the system
v Damage caused by the improper insertion of a PC Card
or the installation of an incompatible card
v Diskette drive damage caused by pressure on the
diskette drive cover, foreign material in the drive, or the
insertion of a diskette with multiple labels
v Damaged or bent diskette eject button
v Fuses blown by attachment of a nonsupported device
v Forgotten computer password (making the computer
unusable)
v Sticky keys caused by spilling a liquid onto the keyboard
The following symptoms might indicate damage
caused by nonwarranted activities:
v Missing parts might be a symptom of unauthorized
service or modification.
v If the spindle of a hard disk drive becomes noisy, it may
have been subjected to excessive force, or dropped.

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Related service information

Related service information
This section provides information about the following:
v “Service Web site”
v “Restoring the pre-installed system”
v “Passwords” on page 32
v “Power management” on page 35

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/think/spm

Restoring the pre-installed system
When the hard disk drive is replaced because of a failure,
no Product Recovery program is on the new hard disk. In
this case, you must use the recovery CD for the computer.
Order the recovery CD and the hard disk drive at the same
time so that you can recover the new hard disk drive with
the pre-installed software when they arrive. For information
on which CD to order, see “Recovery CDs” on page 203.

Recovery to Factory Contents by using
Product Recovery CDs
To create the service partition and install the factory
contents from the recovery CD, do the following:

Note
The recovery process might take up to 2 hours.
1. Insert the recovery CD into the CD or DVD drive, then
restart the computer.
2. The following message is displayed: “Your computer
originally included a Product Recovery program ...
Reinstall the Product Recovery program? (Y/N) [ ]”.
3. Press the Y key. The service partition is created and
loaded with the Product Recovery program files.
4. At next window, press Enter to continue.
v The service partition is created. The system
automatically reboots during this process.
v The recovery process copies some files to the
service partition, and PKUNZIPs others.
v Follow the prompts. You may be prompted to
change CDs.
v When the process is complete, the system reboots.

General descriptions

31

Related service information

5. If you get a message asking which operating system to
install, select the proper operating system and press
Enter.
6. A message is displayed: “Full Recovery:”. Press Enter
to select.
7. On each of the next three windows, press the Y key.
8. Follow the prompts to complete the recovery.

Passwords
As many as three passwords may be needed for any
ThinkPad computer: the power-on password (POP), the
hard-disk password (HDP), and the supervisor password
(SVP).
If any of these passwords has been set, a prompt for it
appears on the screen whenever the computer is turned
on. The computer does not start until the password is
entered.
Exception: If only an SVP is installed, the password
prompt does not appear when the operating
system is booted.
Power-on password:
A power-on password (POP) protects the system from
being powered on by an unauthorized person. The
password must be entered before an operating system can
be booted.
Hard-disk password:
There are two hard-disk passwords (HDPs):
v User HDP—for the user
v Master HDP—for the system administrator, who can use
it to get access to the hard disk even if the user has
changed the user HDP
Note: There are two modes for the HDP: User only and
Master + User. The Master + User mode requires
two HDPs; the system administrator enters both in
the same operation. The system administrator then
provides the user HDP to the system user.
Attention: If the user HDP has been forgotten, check
whether a master HDP has been set. If it has, it can be
used for access to the hard disk drive. If no master HDP is
available, neither Lenovo nor Lenovo authorized servicers
provide any services to reset either the user or the master
HDP, or to recover data from the hard disk drive. The hard
disk drive can be replaced for a scheduled fee.
Supervisor password:
A supervisor password (SVP) protects the system

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information stored in the BIOS Setup Utility. The user must
enter the SVP in order to get access to the BIOS Setup
Utility and change the system configuration.
Attention: If the SVP has been forgotten and cannot be
made available to the servicer, there is no service
procedure to reset the password. The system board must
be replaced for a scheduled fee.

How to remove the power-on password
To remove a POP that you have forgotten, do the
following:
(A) If no SVP has been set:
1. Turn off the computer.
2. Remove the battery pack.
For how to remove the battery pack, see “1010 Battery
pack (14.1-in. LCD models)” on page 72.
3. Remove the backup battery.
For how to remove the backup battery, see “1140
Backup battery” on page 104.
4. Turn on the computer and wait until the POST ends.
After the POST ends, the password prompt does not
appear. The POP has been removed.
5. Reinstall the backup battery and the battery pack.
(B) If an SVP has been set and is known by the servicer:
1. Turn on the computer; then, while the “To interrupt
normal startup, press the blue Access IBM button”
message is displayed at the lower-left of the screen,
press the Access IBM button. The Rescue and
Recovery screen opens.
For models supporting the Passphrase function, press
F1 while the POP icon is appearing on the screen;
then enter the POP. For the other models, enter the
POP.
Note: To check whether the ThinkPad computer
supports the Passphrase function, enter the
BIOS Setup Utility and go to Security -->
Password. If the Using Passphrase item is
displayed in the menu, this function is available
on the ThinkPad computer.
2. Click Access BIOS. The system Restart Required
window is displayed.
3. Click Yes. The computer restarts, and the BIOS Setup
Utility screen opens.
4. Select Security, using the cursor directional keys to
move down the menu.
General descriptions

33

Related service information

5. Select Password.
6. Select Power-On Password.
7. Type the current SVP 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; then, in the Setup confirmation window,
select Yes .

How to remove the hard-disk password
Attention: If User only mode is selected and the user
HDP has been forgotten and cannot be made available to
the servicer, neither Lenovo nor Lenovo authorized
servicers provide any services to reset the user HDPs or to
recover data from the hard disk drive. The hard disk drive
can be replaced for a scheduled fee.
To remove a user HDP that has been forgotten, when the
SVP and the master HDP are known, do the following:
1. Turn on the computer; then, while the “To interrupt
normal startup, press the blue Access IBM button”
message is displayed at the lower-left of the screen,
press the Access IBM button. The Rescue and
Recovery screen opens.
For models supporting the Passphrase function, press
F1 while HDP icon is appearing on the screen; then
enter the master HDP. For the other models, enter the
master HDP.
Note: To check whether the ThinkPad computer
supports the Passphrase function, enter the
BIOS Setup Utility and go to Security -->
Password. If Using Passphrase item is
displayed in the menu, this function is available
on the ThinkPad computer.
2. Click Access BIOS. The system Restart Required
window is displayed.
3. Click Yes. The computer restarts, and the BIOS Setup
Utility screen opens.
4. Select Security, using the cursor directional keys to
move down the menu.
5. Select Password.
6. Select Hard-disk x password, where x is the letter of
the hard disk drive. A pop-up window opens.
7. Select Master HDP.
8. Type the current master HDP in the Enter Current
Password field. then leave the Enter New Password
field blank, and press Enter twice.
9. Press F10.

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10. Select Yes in the Setup Configuration window.
Both user HDP and master HDP will have been
removed.

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

Screen blank mode
Screen blank mode has three variants, as follows:
1. If you press Fn+F3, or if the time set on the “LCD off
timer” in the BIOS Setup Utility expires,
v The LCD backlight turns off.
v The hard disk drive motor stops.
v The speaker is muted.
2. If you are using the ACPI operating system and you
press Fn+F3,
v The LCD backlight turns off.
v The hard disk drive motor stops.
3. If the time set on the “Turn off monitor” timer in the
operating system expires,
v The LCD backlight turns off.
To end screen blank mode and resume normal operation,
press any key.

Standby mode
When the computer enters standby mode, the following
events occur in addition to what occurs in screen blank
mode:
v The LCD is powered off.
v The hard disk drive is powered off.
v The CPU stops.
To enter standby mode, press Fn+F4.
Note: If you are using the ACPI operating system, you can
change the action of Fn+F4.
In certain circumstances, the computer goes into standby
mode automatically:
v If a “suspend time” has been set on the timer, and the
user does not do any operation with the keyboard, the
®
TrackPoint , the hard disk, the parallel connector, or the
diskette drive within that time.
v If the battery indicator blinks orange, indicating that the
battery power is low. (Alternatively, if Hibernate when
battery becomes low has been selected in the “Power
Management Properties” window, the computer goes
into hibernation mode.)
General descriptions

35

Related service information

Note for the APM operating system:
Even if you do not set the low-battery alarm, the charge
indicator notifies you when the battery is low, and then the
computer enters the power-saving mode automatically.
This default low-battery behavior is independent of the
operating system; so if you have set the low-battery alarm,
the computer may not do what you specified. It chooses
either your setting or the default setting, whichever is
appropriate.
If you are using the ACPI operating system, only the
low-battery alarm is available.
To cause the computer to return from standby mode and
resume operation, do one of the following:
v Press the Fn key.
v Open the LCD cover.
v Turn on the power switch.
Also, in either of the following events, the computer
automatically returns from standby mode and resumes
operation:
v The ring indicator (RI) is signaled by a serial device or a
PC Card device.
v The time set on the resume timer elapses.
Note: The computer does not accept any input
immediately after it enters standby mode. Wait a
few seconds before taking any action to reenter
operation mode.

Hibernation mode
Note for OS/2
If you are using OS/2 in the default format, HPFS,
you cannot create a hibernation file. If you want to
use hibernation mode, you will need to reinstall
OS/2 with FAT format.
In hibernation mode, the following occurs:
v The system status, RAM, VRAM, and setup data are
stored on the hard disk.
v 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.

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To cause the computer to enter hibernation mode, do any
of the following:
v Press the Fn+F12 keys.
v If you are using the APM operating system and have set
the mode to Power switch mode [Hibernation], turn
off the power switch.
v If you are using the ACPI operating system and 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.
– Pressing Fn+F4 keys.
Also, the computer goes into hibernation mode
automatically in either of the following conditions:
v If a “hibernation time” has been set on the timer, and if
the user does not do any operation with the keyboard,
the TrackPoint, the hard disk drive, the parallel
connector, or the diskette drive within that time.
v If the timer conditions are satisfied in suspend mode.
v If you are using the APM operating system and have set
the mode to Hibernate when battery becomes low,
and the battery charge becomes critically low.
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.

General descriptions

37

Checkout guide

Checkout guide
Use the following procedures as a guide in identifying and
correcting problems with the ThinkPad computer.
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.

Testing the computer
The ThinkPad computer has a test program called
PC-Doctor for DOS (hereafter called PC-Doctor.) You can
detect errors by running the diagnostics test included in
PC-Doctor. This section is an overview of the procedure.
For details that depend on model-unique functions, refer to
“Product overview” on page 47.
For some possible configurations of the computer,
PC-Doctor might not run correctly. To avoid this problem,
you need to initialize the computer setup by use of the
BIOS Setup Utility before you run PC-Doctor. On the BIOS
Setup Utility screen, press F9, Enter, F10, and then Enter.
Note: When you initialize the computer configuration,
some devices are disabled, such as the serial port.
If you test one of these devices, you will need to
enable it by using Configuration utility for DOS. The
utility is available on the following Web site:
http://www.lenovo.com/think/ support
PC-Doctor cannot be used to test a device that is in the
docking station, even if the computer supports the docking
station. To test a USB device, connect it to the USB
connector of the computer.

Creating the PC-Doctor diagnostics diskette
To create the PC-Doctor disk from the Rescue and
Recovery workspace, do as follows:
1. Enter the Rescue and Recovery workspace by
pressing the Access IBM button during POST.
2. When the Rescue and Recovery workspace finishes
loading, click Diagnostic Diskette.

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3. Authenticating the digital signature takes about 15
seconds; then the ThinkPad computer will reboot into
PC-DOS.
4. A batch file automatically starts up to prompt you
through the process of creating diskettes. You are
notified of how many diskettes you will need.
a. You are prompted to insert each diskette in
sequence.
b. Typically, all you need to do is to press the Enter
key for the floppy drive; the system then formats
and creates the diskette.
c. Each diskette is erased and formatted with the
PC-Doctor for DOS boot image.
5. Once all the diskettes have been created, the
ThinkPad computer will reboot. The user is asked to
remove all diskettes from the drive, or to insert the first
diskette created if it is desired to run the diagnostics.
To run the test, do as follows:
Note: In the following procedure, you can select an item
not only with the arrow keys, but also with the
TrackPoint pointer. Instead of pressing Enter, click
the left button.
1. Insert the PC-Doctor disk into the diskette drive; then
power on the computer.
If the computer cannot be powered on, go to “Power
system checkout” on page 42, and check the power
sources.
If an error code appears, go to “Symptom-to-FRU
index” on page 58.
On the first screen, select the model and press Enter.
Follow the instructions on the screen.
2. The main panel of PC-Doctor appears.
3. Select Diagnostics with the arrow keys, and press
Enter.
A pull-down menu appears. (Its exact form depends on
the model.)
Note: PC-Doctor menu does not mean the formal
support device list. Some unsupported device
names may appear in the PC-Doctor menu.

General descriptions

39

Checkout guide

Diagnostics

Interactive Tests

Hardware Info

Utility

Quit

F1=Help

Run Normal Test
Run Quick Test
CPU/Coprocessor
Systemboard
Video Adapter
Serial Ports
Parallel Ports
Fixed Disks
Diskette Drives
Other Devices
Communication
Wireless LAN
Memory Test - Full
Memory Test - Quick

PC-DOCTOR 2.0 Copyright 2002 PC-Doctor, Inc. All Rights Reserved.

Use the cursor keys and ESC to move in menus. Press ENTER to select.

The options on the test menu are as follows:
Diagnostics
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v

Run Normal Test
Run Quick Test
CPU/Coprocessor
Systemboard
Video Adapter
Serial Ports
Parallel Ports
Fixed Disks
Diskette Drives
Other Devices
ThinkPad Devices
Communication
Wireless LAN
Memory Test – Full
Memory Test – Quick

Interactive Tests
v
v
v
v
v
v
v
v

Keyboard
Video
Internal Speaker
Mouse
Diskette
System Load
CD-ROM/DVD Test
Intel Wireless Radio

Notes:
v In the Keyboard test in Interactive Tests, the Fn key
should be held down for at least 2 seconds; otherwise,
it cannot be sensed.
v Video Adapter test supports only the LCD display on
the ThinkPad computer. If you have an external
monitor attached to your computer, detach it before
running PC-Doctor for DOS.
v When Legacy Floppy Drives is enabled in the BIOS
Setup Utility, the Diskette Drives test is activated even
if no legacy diskette drive is attached to the ThinkPad
computer.
4. Run the applicable function test.
5. Follow the instructions on the screen. If there is a
problem, PC-Doctor shows messages describing it.
6. To exit the test, select Quit — Exit Diag.

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Checkout guide

To cancel the test, press Esc.
Note: After running PC-Doctor, check the time and date
on the system and reset them if they are incorrect.

Detecting system information with
PC-Doctor
PC-Doctor can detect the following system information:

Hardware Info
v
v
v
v
v
v
v
v
v
v
v

System Configuration
Memory Contents
Physical Disk Drives
Logical Disk Drives
VGA Information
IDE Drive Info
PCI Information
PNPISA Info
SMBIOS Info
VESA LCD Info
Hardware Events Log

Utility
v
v
v
v
v
v
v
v
v
v
v

Run External Tests
Surface Scan Hard Disk
Benchmark System
DOS Shell
Tech Support Form
Battery Rundown
View Test Log
Print Log
Save Log
Full Erase Hard Drive
Quick Erase Hard Drive

General descriptions

41

Checkout guide

Power system checkout
To
1.
2.
3.
4.

verify a symptom, do the following:
Turn off the computer.
Remove the battery pack.
Connect the ac adapter.
Check that power is supplied when you turn on the
computer.
5. Turn off the computer.
6. Disconnect the ac adapter and install the charged
battery pack.
7. Check that the battery pack supplies power when you
turn on the computer.
If you suspect a power problem, see the appropriate one
of the following power supply checkouts:
v “Checking the ac adapter”
v “Checking operational charging” on page 43
v “Checking the battery pack” on page 43
v “Checking the backup battery” on page 44

Checking the ac adapter
You are here because the computer fails only when the ac
adapter is used.
v If the power problem occurs only when the port
replicator is used, replace the port replicator.
v If the power-on indicator does not turn on, check the
power cord of the ac adapter for correct continuity and
installation.
v If the computer does not charge during operation, go to
″Checking operational charging.″
To check the ac adapter, do the following:
1. Unplug the ac adapter cable from the computer.
2. Measure the output voltage at the plug of the ac
adapter cable. See the following figure:

2
1

Pin

Voltage (V dc)

1

+15.5 to +17.0

2

Ground

(16 - 10 V)
3. If the voltage is not correct, replace the ac adapter.
4. If the voltage is acceptable, do the following:
v Replace the system board.
v If the problem persists, go to “Product overview” on
page 47.
Note: Noise from the ac adapter does not always indicate
a defect.

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Checking operational charging
To check whether the battery charges properly during
operation, use a discharged battery pack or a battery pack
that has less than 50% of the total power remaining when
installed in the computer.
Perform operational charging. If the battery status indicator
or icon does not turn on, remove the battery pack and let it
return to room temperature. Reinstall the battery pack. If
the charge indicator or icon still does not turn on, replace
the battery pack.
If the charge indicator still does not turn on, replace the
system board. Then reinstall the battery pack. If it is still
not charged, go to the next section.

Checking the battery pack
Battery charging does not start until the Power Meter
shows that less than 95% of the total power remains;
under this condition the battery pack can charge to 100%
of its capacity. This protects the battery pack from being
overcharged or from having a shortened life.
To check your battery, move your cursor to the Power
Meter icon in the icon tray of the Windows taskbar and
wait for a moment (but do not click), and the percentage of
battery power remaining is displayed. To get detailed
information about the battery, double-click the Power Meter
icon.
Note: If the battery pack becomes hot, it may not be able
to charge. Remove it from the computer and leave it
at room temperature for a while. After it cools down,
reinstall and recharge it.
To check the battery pack, do the following:
1. Power off the computer.
2. Remove the battery pack and measure the voltage
between battery terminals 1 (+) and 5 (−). See the
following figure:

4

3

2

1(+)

Terminal

Voltage (V dc)

1

+ 0 to + 12.6

5

Ground (−)

5(-)
3. If the voltage is less than +11.0 V dc, the battery pack
has been discharged.

General descriptions

43

Checkout guide

Note: Recharging will take at least 3 hours, even if the
indicator does not turn on.
If the voltage is still less than +11.0 V dc after
recharging, replace the battery.
4. If the voltage is more than +11.0 V dc, measure the
resistance between battery terminals 4 and 5. The
resistance must be 4 to 30 K .
If the resistance is not correct, replace the battery
pack. If the resistance is correct, replace the system
board.

Checking the backup battery
Do the following:
1. Power off the computer, and unplug the ac adapter
from it.
2. Turn the computer upside down.
3. Remove the battery pack (see “1010 Battery pack
(14.1-in. LCD models)” on page 72).
4. Remove the backup battery (see “Checking the battery
pack” on page 43).
5. Measure the voltage of the backup battery. See the
following figure.

Red (+)

Black (-)

Wire

Voltage (V dc)

Red

+2.5 to +3.2

Black

Ground

v If the voltage is correct, replace the system board.
v If the voltage is not correct, replace the backup battery.
v If the backup battery discharges quickly after
replacement, replace the system board.

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ThinkPad T43 Series
Product overview . . . . . . . . . . . . 47
Specifications . . . . . . . . . . . . 47
Status indicators . . . . . . . . . . . 50
FRU tests . . . . . . . . . . . . . 53
Fn key combinations . . . . . . . . . . 55
Symptom-to-FRU index . . . . . . . . . . 58
Numeric error codes . . . . . . . . . . 58
Error messages . . . . . . . . . . . 62
Beep symptoms . . . . . . . . . . . 64
No-beep symptoms . . . . . . . . . . 64
LCD-related symptoms . . . . . . . . . 65
Intermittent problems . . . . . . . . . . 66
Undetermined problems . . . . . . . . . 66
FRU replacement notices . . . . . . . . . 67
Screw notices . . . . . . . . . . . . 67
Retaining serial numbers. . . . . . . . . 68
Restoring the serial number of the system unit
68
Retaining the UUID . . . . . . . . . 69
Reading or writing the ECA information . . . 69
Removing and replacing a FRU. . . . . . . . 71
1010 Battery pack (14.1-in. LCD models) . . . . 72
1020 Battery pack (15.0-in. LCD models) . . . . 74
1030 Ultrabay Slim device . . . . . . . . 75
1040 Hard disk drive . . . . . . . . . . 76
1050 DIMM (optional) . . . . . . . . . 78
1060 Keyboard . . . . . . . . . . . 80
1070 DIMM (standard) . . . . . . . . . 84
1080 Modem daughter card (MDC-2) . . . . . 85
1090 Bluetooth/Modem daughter card (BMDC-3)
87
1100 Palm rest or Palm rest with fingerprint reader
(14.1-in. LCD models) . . . . . . . . . 89
1110 Keyboard bezel or Keyboard bezel with
fingerprint reader (15.0-in. LCD models) . . . 92
1120 Mini PCI adapter . . . . . . . . . 98
1130 Fan assembly . . . . . . . . . . 100
1140 Backup battery . . . . . . . . . 104
1150 Speaker assembly . . . . . . . . 106
1160 Keyboard bezel (14.1-in. LCD models)
108
1170 PC Card/ExpressCard slots (14.1-in. LCD
models) . . . . . . . . . . . . 110
1180 PC Card/ExpressCard slots (15.0-in. LCD
models) . . . . . . . . . . . . 112
1190 LCD assembly (14.1-in. LCD models) . . . 114
1200 LCD assembly (15.0-in. LCD models) . . . 119
1210 CPU . . . . . . . . . . . . 124
1220 Ultrabay Slim guide rail assembly (14.1-in.
LCD models) . . . . . . . . . . . 125
1230 Ultrabay Slim guide rail assembly (15.0-in.
LCD models) . . . . . . . . . . . 127

© Lenovo 2005. Portions © IBM Corp. 2005.

45

1240 VGA and Ultrabay Slim device eject button
cable . . . . . . . . . . . . .
1250 System board and base cover (14.1-in. LCD
models) . . . . . . . . . . . .
1260 System board, interposer card, and base
cover (15.0-in. LCD models) . . . . . .
2010 LCD front bezel (14.1-in. LCD models)
2020 LCD front bezel (15.0-in. LCD models)
2030 Inverter card (14.1-in. LCD models) . . .
2040 Inverter card (15.0-in. LCD models) . . .
2050 Wireless antenna assemblies, LCD panel,
LCD cable assembly, hinges, and LCD cover
(14.1-in. LCD models) . . . . . . . .
2060 Wireless antenna assemblies, LCD panel,
LCD cable assembly, hinges, and LCD cover
(15.0-in. LCD models) . . . . . . . .
3010 ThinkPad Dock II PCI cover . . . . . .
3020 ThinkPad Dock II top cover . . . . . .
Locations . . . . . . . . . . . . . .
Front view . . . . . . . . . . . .
Rear view . . . . . . . . . . . . .
Bottom view . . . . . . . . . . . .
Parts list . . . . . . . . . . . . . .
Overall . . . . . . . . . . . . .
14.1-in. LCD FRUs . . . . . . . . . .
14.1-in. XGA TFT . . . . . . . . .
15.0-in. LCD FRUs . . . . . . . . . .
15.0-in. XGA TFT . . . . . . . . .
15.0-in. SXGA+ IPS TFT . . . . . . .
Keyboard . . . . . . . . . . . . .
Recovery CDs . . . . . . . . . . .
Windows XP Professional . . . . . . .
Windows XP Home Edition . . . . . . .
Miscellaneous parts . . . . . . . . . .
AC adapters . . . . . . . . . . . .
Optional FRUs . . . . . . . . . . .
Common parts list . . . . . . . . . .
Tools . . . . . . . . . . . . .
Power cords (system) . . . . . . . .
Power cords (ThinkPad Dock II) . . . . .
Notices . . . . . . . . . . . . . .
Trademarks . . . . . . . . . . . . .

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130
132
140
148
150
152
154

155

169
176
177
180
180
182
183
184
185
194
195
196
197
198
199
203
203
204
205
208
209
210
210
211
212
213
215

Product overview

Product overview
This section presents the following product-unique
information:
v “Specifications”
v “Status indicators” on page 50
v “FRU tests” on page 53
v “Fn key combinations” on page 55

Specifications
The following table lists the specifications of the ThinkPad
T43 series:
Feature

Description

Processor

v Intel® Pentium® M processor 730 (1.6
GHz), 2-MB L2 cache
v Intel Pentium M processor 740 (1.73
GHz), 2-MB L2 cache
v Intel Pentium M processor 750 (1.86
GHz), 2-MB L2 cache

Bus architecture

v
v
v
v
v

Graphic memory
chip

v Intel 915GM

Display

v 14.1-inch, 16M colors, XGA (1024 × 768
resolution) TFT color LCD
v 15.0-inch, 16M colors, XGA (1024 × 768
resolution) TFT color LCD
v 15.0-inch, 16M colors, SXGA+ (1400 ×
1050 resolution) IPS (in-plane switching)
TFT color LCD

Standard memory

v 256-MB DDR2-533 SDRAM SO-DIMM
(PC2-4200) card × 1
v 512-MB DDR2-533 SDRAM SO-DIMM
(PC2-4200) card × 1
v 1-GB DDR2-533 SDRAM SO-DIMM
(PC2-4200) card × 1

533-MHz PSB
533-MHz DDR2 SDRAM (PC2-4200)
HUB link
PCI bus
LPC bus

(continued)

ThinkPad T43 Series

47

Product overview
Feature

Description

Optional memory

v 256-MB DDR2-533 SDRAM SO-DIMM
(PC2-4200) card × 1
v 512-MB DDR2-533 SDRAM SO-DIMM
(PC2-4200) card × 1
v 1-GB DDR2-533 SDRAM SO-DIMM
(PC2-4200) card × 1
(maximum of 2048 MB)

CMOS RAM

v 242 bytes

Hard disk drive

v 30.0 GB,
interface
v 40.0 GB,
interface
v 40.0 GB,
interface
v 60.0 GB,
interface
v 80.0 GB,
interface
v 60.0 GB,
interface

4200 rpm, 9.5 mm high, IDE
4200 rpm, 9.5 mm high, IDE
5400 rpm, 9.5 mm high, IDE
5400 rpm, 9.5 mm high, IDE
5400 rpm, 9.5 mm high, IDE
7200 rpm, 9.5 mm high, IDE

Supported hard disk drives are depend on
the model.
Ultrabay Slim device v DVD drive, 9.5 mm high
(standard)
v DVD/CD-RW combo drive, 9.5 mm high
v DVD-RAM/RW drive, 9.5 mm high
Fingerprint reader

Some models

I/O port

v
v
v
v
v
v
v
v
v
v

Internal modem

v 56.6 Kbps

Audio

v Built-in stereo speakers
v Software control volume

Infrared transfer

v IrDA 1.1

Ethernet (on the
system board)

v Gigabit Ethernet

External monitor connector
Stereo headphone jack
Monaural microphone jack
Infrared port
Parallel connector
Docking connector
RJ11 connector
RJ45 connector
TV-out connector (S-Video)
Universal serial bus (USB) connector × 2
(compatible with USB 1.1 and 2.0)

(continued)

48

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Product overview
Feature

Description

Mini PCI adapter

v Intel PRO Wireless 2200BG Mini-PCI
Adapter
v Intel PRO Wireless 2915ABG Mini-PCI
Adapter

PC Card
/ExpressCard slots

v ExpressCard (34 module, 54 module) for
upper slot
v PC Card (Type-II) for lower slot

Communication
daughter card
(CDC)

v ThinkPad Integrated 56K Modem
(MDC-2)
v ThinkPad Integrated Bluetooth IV with
56K Modem (BMDC-3)

Touch pad

v UltraNav

ThinkLight

Yes

Battery

v Li-ion battery (6 cells) 4.8 Ah
v Li-ion battery (9 cells) 7.2 Ah
v Ultrabay Slim Li Polymer battery (3 cells)
(option)

AC adapter

v 72-watt type

Preinstalled
operating system

v Windows XP Professional
v Windows XP Home Edition

ThinkPad T43 Series

49

Product overview

Status indicators
The system status indicators show the status of the
computer, as follows:

1

9
2

2

50

3

8
2

7
2

6
2

5
2

4
2

3
2

2

8

MT 1871/1872/1873/1874/1875/1876

Product overview
Indicator

Meaning

1 Ultrabay
Slim status

Green:
An Ultrabay Slim device is installed and in
use.
Blinking green:
An Ultrabay Slim device is in the process
of being detached.
Turn off:
An Ultrabay Slim device is ready to be
attached or detached.
Note: If you are using Windows 2000, the
Ultrabay Slim status indicator does not blink
while an Ultrabay Slim device is being
detached. Instead, a message box pops up
when the process is completed; then the
indicator turns off.

2 Standby
status

Green:
The computer is in standby mode.
Blinking green:
The computer is entering standby mode or
hibernation mode, or is resuming normal
operation.

3 Battery
status

Green:
The battery is in use and has enough
power. The ac adapter has charged the
battery completely.
Blinking green:
The battery is being charged, but still has
enough power to operate. (At regular
intervals, the indicator light turns off briefly.)
Orange:
The battery is being charged, but the
battery power is still low.
Blinking orange:
The battery needs to be charged. When
the indicator starts blinking orange, the
computer beeps three times.

4 Power on

Green:
The computer is on and ready to use. This
indicator stays lit whenever the computer is
on and is not in standby mode.

(continued)

ThinkPad T43 Series

51

Product overview
Indicator

Meaning

5 Drive in
use

Green:
Data is being read from or written to the
hard disk drive, the diskette drive, or the
drive in the Ultrabay Slim device. When
this indicator is on, do not put the computer
into standby mode or turn off the computer.
Note: Do not move the system while the
green drive-in-use light is on. Sudden physical
shock could cause drive errors.

6 Caps lock

Green:
Caps Lock mode is enabled. To enable or
disable Caps Lock mode, press the Caps
Lock key.

7 Num lock

Green:
The numeric keypad on the keyboard is
enabled. To enable or disable the keypad,
press and hold the Shift key, and press the
NumLk (ScrLk) key.

8 Bluetooth
status

Green:
Bluetooth wireless is operational. This
indicator is on when Bluetooth wireless is
on and not in suspend mode.

R

9 Wireless
status

52

Green:
The wireless feature (the IEEE 802.11
standard) is on, and the radio link is ready
for use.
Blinking green:
Data is being transmitted.

MT 1871/1872/1873/1874/1875/1876

Product overview

FRU tests
The following table shows the test for each FRU.
FRU

Applicable test

System board

1. Diagnostics --> CPU/Coprocessor
2. Diagnostics --> Systemboard
3. If the docking station or the port replicator
is attached to the ThinkPad computer,
undock it. Place the computer on a
horizontal surface, and run Diagnostics -->
ThinkPad Devices --> HDD Active
Protection Test.
Note: Do not apply any physical shock to
the computer while the test is running.

Power

Diagnostics --> ThinkPad Devices --> AC
Adapter, Battery 1 (Battery 2)

LCD unit

1. Diagnostics --> Video Adapter
2. Interactive Tests --> Video

Modem
daughter card
(MDC-2) or
Bluetooth
/Modem
daughter card
(BMDC-3)

1. Make sure the modem is set up correctly.
2. Replace the modem jack and the modem
card in turn, and run the following tests in
Diagnostics --> Communication:
a. Conexant Smart Modem Interrupt
b. Conexant Smart Modem Dialtone

Audio

1. Interactive Tests --> Internal Speaker
2. Diagnostics --> Other Devices --> Analog
Devices AC97 CODEC Test

Speaker

Interactive Tests --> Internal Speaker

PC Card slot

1. Diagnostics --> Systemboard --> PCMCIA
2. Insert a PC Card Wrap Plug into every PC
Card slot, and run Diagnostics -->
Systemboard --> PCMCIA External Loop

ExpressCard
slot

1. Insert a PCI-Express/USB Wrap card into
the ExpressCard slot.
2. Turn on the computer.
3. Run Diagnostics --> ThinkPad Devices
--> ExpressCard slot.

Keyboard

1. Diagnostics --> Systemboard -->
Keyboard
2. Interactive Tests --> Keyboard

Hard disk drive

Diagnostics --> Fixed Disks

Diskette drive

1. Diagnostics --> Diskette Drives
2. Interactive Tests --> Diskette

DVD drive or
DVD/CD-RW
combo drive

1. Diagnostics --> Other Devices -->
CD-ROM/DVD
2. Interactive Tests --> CD-ROM/DVD Test

(continued)

ThinkPad T43 Series

53

Product overview
FRU

Applicable test

Memory

1. If two DIMMs are installed, remove one of
them and run Diagnostics --> Memory
Test—Quick.
2. If the problem does not recur, return the
DIMM to its place, remove the other one,
and run the test again.
3. If the test does not detect the error, run
Diagnostics --> Memory Test—Full.

Fan

1. Turn on the computer and check the air
turbulence at the louver near the PC Card
slot.
2. Run Diagnostics --> ThinkPad Devices
--> Fan.

TrackPoint or
pointing device

If the TrackPoint does not work, check the
configuration as specified in the ThinkPad
Configuration program. If the TrackPoint is
disabled, select Automatic to enable it.
After you use the TrackPoint, the pointer may
drift on the screen for a short time. This drift
can occur when a slight, steady pressure is
applied to the TrackPoint pointer. This symptom
is not a hardware problem. If the pointer stops
after a short time, no service action is
necessary.
If enabling the TrackPoint does not correct the
problem, continue with the following:
v Interactive Tests --> Mouse

Touch Pad

54

If the Touch Pad does not work, check the
configuration as specified in the ThinkPad
Configuration program. If the Touch Pad is
disabled, select Automatic to enable it. If
enabling the Touch Pad does not correct the
problem, continue with the following:
v Interactive Tests --> Mouse

MT 1871/1872/1873/1874/1875/1876

Product overview

Fn key combinations
The following table shows the function of each combination
of Fn with a function key.
Key
combination

Description

Fn+F1

Reserved.

Fn+F2

Reserved.

Fn+F3

Turn off the computer display, leaving the
screen blank. To turn the computer display on
again, press any key or press the TrackPoint
pointing stick.

Fn+F4

Put the computer in standby mode. To return to
normal operation, press the Fn key only,
without pressing a function key.
Notes:
1. This mode is called suspend mode in
Windows NT.
2. In Windows 2000 and Windows XP, this
combination of keys functions as a sleep
button. The setting can be changed so that
pressing it puts the computer into
hibernation mode or even shuts the
computer down.

Fn+F5

Control the power source of the built-in
Bluetooth wireless device. This combination of
the keys functions as a toggle switch of the
power state.
Note: In Windows 2000 or Windows XP, this
combination of keys enables or disables the
built-in wireless networking features (the IEEE
802.11 standard) and the Bluetooth wireless
features. To use this function, the following
drivers must be installed.
v ThinkPad Power Management driver
v OnScreen Display utility
v Wireless device drivers

Fn+F6

Reserved.

(continued)

ThinkPad T43 Series

55

Product overview
Key
combination

Description

Fn+F7

Switch a display output location
v External monitor (CRT display)
v Computer display and external monitor (LCD
+ CRT display)
v Computer display (LCD)
Note: For any operating system other than
Windows 2000 or Windows XP, no additional
procedure is needed; just press Fn+F7.
Notes:
1. This function does not work when different
desktop images are displayed on the
computer display and the external monitor
(the Extend desktop function).
2. This function does not work while a DVD
movie or a video clip is playing.
3. For Windows 2000 or Windows XP, a
hotkey application might take over the
switching function.

Fn+F8

Note: This function is not supported in
Windows 2000 and Windows XP.
If the image displayed on the computer is
smaller than the physical display, switch the
computer screen size between expanded mode
and normal mode.

(continued)

56

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Product overview
Key
combination

Description

Fn+F9

Open the ThinkPad EasyEject Utility screen.
Buttons for the following choices are displayed:
v Eject ThinkPad PC from Dock: This button
is displayed only if the ThinkPad computer
has been attached to a ThinkPad Dock II.
The computer can be detached from the
ThinkPad Dock II.
v Eject ThinkPad PC from Mini Dock: This
button is displayed only if the ThinkPad
computer has been docked in a ThinkPad
Mini Dock and one or more USB devices
have been connected to the ThinkPad Mini
Dock. You can stop and remove all the USB
devices safely by clicking the button.
Note: If a diskette drive is connected to the
external-diskette-drive connector of the
ThinkPad Mini Dock, you cannot connect a
USB diskette drive.
v Run EasyEject Actions: This button is used
to select, stop, or remove external devices
connected to the ThinkPad computer.
v Configure EasyEject Actions: Opens the
ThinkPad EasyEject Utility main window.
v Fn+F9 Settings: Configures the settings for
the Fn+F9 function.
You can use this utility to stop and remove all
ejectable devices connected to the ThinkPad
computer, the ThinkPad Mini Dock, or the
ThinkPad Port Replicator II. You cannot use it
to detach the computer from the ThinkPad Mini
Dock or the ThinkPad Port Replicator II.
Note: This function is supported only in
Windows 2000 and Windows XP.

Fn+F10

Reserved.

Fn+F11

Reserved.

Fn+F12

Put the computer into hibernation mode. To
return to normal operation, press the power
button for less than four seconds.
Note: To use Fn+F12 for hibernation in
Windows 2000 or Windows XP, you must have
the PM device driver installed on the computer.

Fn+PgUp

Turn the ThinkLight on or off.
Note: This function is supported only on the
ThinkPad computers that have the ThinkLight.
The on or off status of the ThinkLight is shown
on the screen for a few seconds when you
press Fn+PgUp.

Fn+Home

The computer display becomes brighter.

Fn+End

The computer display becomes dimmer.

Fn+Spacebar

Enable the FullScreen Magnifier function.

ThinkPad T43 Series

57

Symptom-to-FRU index

Symptom-to-FRU index
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 66.

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

Numeric error codes
Symptom or error

FRU or action, in sequence

0175
Bad CRC1, stop POST
task—The EEPROM checksum
is not correct.

System board.

0176
System Security—The system
has been tampered with.

1. Run BIOS Setup Utility,
and save the current
setting by pressing F10.
2. System board.

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

System board.

0182
Bad CRC2. Enter BIOS Setup
and load Setup defaults.—The
checksum of the CRS2 setting
in the EEPROM is not correct.

1. Run BIOS Setup Utility.
Press F9, and Enter to
load the default setting.
Then save the current
setting by pressing F10.
2. System board.

58

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Symptom-to-FRU index
Symptom or error

FRU or action, in sequence

0185
Bad startup sequence settings.
Enter BIOS Setup and load
Setup defaults.

1. Run BIOS Setup Utility.
Press F9, and Enter to
load the default setting.
Then save the current
setting by pressing F10.

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 pack.
2. Battery pack.

0191
System Security—Invalid
Remote Change requested.

1. Run BIOS Setup Utility,
and then save current
setting by pressing F10.
2. System board.

0192
System Security— IBM
Embedded Security hardware
tamper detected.

System board.

0199
1. Run BIOS Setup Utility,
System Security—IBM Security
and then save the current
password retry count exceeded.
setting by pressing F10.
2. System board.
01C8
Two or more modem devices
are found. Remove all but one
of them. Press  to
continue.

1. Remove either a Mini-PCI
Card or a modem
daughter card. Otherwise,
press Esc to ignore the
warning message.
2. System board.

01C9
1. Remove the Ethernet
More than one Ethernet devices
device that you installed;
are found. Remove one of
or press Esc to ignore the
them. Press  to continue.
warning message.
2. System board.
0200
Hard disk error—The hard disk
is not working.

1. Reseat the hard disk
drive.
2. Load Setup Defaults in
BIOS Setup Utility.
3. Hard disk drive.
4. System board.

021x
Keyboard error.

Run interactive tests of the
keyboard and the auxiliary
input device.

ThinkPad T43 Series

59

Symptom-to-FRU index
Symptom or error

FRU or action, in sequence

0220
Monitor type error—Monitor
type does not match the one
specified in CMOS.

Load Setup Defaults in BIOS
Setup Utility.

0230
Shadow RAM error—Shadow
RAM fails at offset nnnn.

System board.

0231
System RAM error—System
RAM fails at offset nnnn.

1. DIMM.
2. System board.

0232
Extended RAM error—
Extended RAM fails at offset
nnnn.

1. DIMM.
2. System board.

0250
System battery error—System
battery is dead.

Replace the backup battery
and run BIOS Setup Utility to
reset the time and date.

0251
System CMOS checksum
bad— Default configuration
used.

Replace the backup battery
and run BIOS Setup Utility to
reset the time and date.

0252
Password checksum bad—The
password is cleared.

Reset the password by
running BIOS Setup Utility.

0260
System timer error.

1. Replace the backup
battery and run BIOS
Setup Utility to reset the
time and date.
2. System board.

0270
Real-time clock error.

1. Replace the backup
battery and run BIOS
Setup Utility to reset the
time and date.
2. System board.

0271
Date and time error—Neither
the date nor the time is set in
the computer.

Run BIOS Setup Utility to
reset the time and date.

0280
Previous boot incomplete—
Default configuration used.

1. Load “Setup Default” in
BIOS Setup Utility.
2. DIMM.
3. System board.

02F5
DMA test failed.

1. DIMM.
2. System board.

02F6
Software NMI failed

1. DIMM.
2. System board.

02F7
Fail-safe timer NMI failed

1. DIMM.
2. System board.

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

1. Remove Mini PCI network
card.
2. System board.

60

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Symptom-to-FRU index
Symptom or error

FRU or action, in sequence

1803
Unauthorized daughter card is
plugged in—Turn off and
remove the daughter card.

1. Remove the daughter
card that you installed.
2. System board.

1810
Hard disk partition layout error.

1. If the Access IBM
Predesktop Area has been
previously disabled, then
go to the BIOS Setup
Utility by pressing F1 to
open the BIOS Setup
Utility. Select Security -->
Predesktop Area -->
Access IBM Predesktop
Area. Set this item to
Disabled. Save and exit.
2. If the Access IBM
Predesktop Area has not
been previously disabled,
press Enter to load Access
IBM Predesktop Area. Then
run RECOVER TO
FACTORY CONTENTS in
Access IBM Predesktop
Area.
3. If item 2 failed, press F3 in
the Welcome screen in
RECOVER TO FACTORY
CONTENTS. Run FDISK,
and then delete all
partitions. Run RECOVER
TO FACTORY CONTENTS
in Access IBM Predesktop
Area again.
4. If item 3 failed, select
CD-ROM boot in Startup in
Access IBM Predesktop
Area. Boot from the
Recovery CD and perform
full recovery from it.
5. If item 4 failed, replace the
hard disk drive.

2000
IBM Hard Drive Active
Protection sensor diagnostics
failed.
Press  to continue.
Press  to enter SETUP

1. Undock docking station or
port replicator if it is
attached to the ThinkPad
computer, and place the
computer on a horizontal
surface. Do not apply any
physical shock to the
computer.
2. Run Diagnostics -->
ThinkPad Devices --> HDD
Active Protection Test.

ThinkPad T43 Series

61

Symptom-to-FRU index

Error messages
Symptom or error

FRU or action, in sequence

Device address conflict.

1. Load “Setup Defaults” in
the BIOS Setup Utility.
2. Backup battery.
3. System board.

Allocation error for device.

1. Load “Setup Defaults” in
the BIOS Setup Utility.
2. Backup battery.
3. System board.

Failing bits: nnnn.

1. DIMM.
2. System board.

Invalid system configuration
data.

1. DIMM.
2. System board.

I/O device IRQ conflict.

1. Load “Setup Defaults” in
the BIOS Setup Utility.
2. Backup battery.
3. System board.

Operating system not found.

1. Check that the operating
system has no failure and is
installed correctly.
2. Enter the BIOS Setup
Utility and see whether
the hard disk drive and
the diskette drive are
properly identified.
3. Reseat the hard disk drive.
4. Reinstall the operating
system.
5. Diskette drive.
6. Hard disk drive.
7. System board.

Hibernation error.

1. Restore the system
configuration to what it
was before the computer
entered hibernation mode.
2. If memory size has been
changed, re-create the
hibernation file.

Fan error.

Fan.

Thermal sensing error.

System board.

Authentication of system
services failed. Press  to
resume.

The Predesktop Area in the
HDD is corrupted. Restore it
from a recovery CD.

62

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Symptom-to-FRU index
Symptom or error

FRU or action, in sequence

Cannot boot from any device.

Check the status of device
which you want to boot from.
Device not found.
1. The device you want to
boot from.
2. System board.
Device Error.
1. The device you want to
boot from.
2. System board.
No valid operating system.
1. Check that the operating
system has no failure and is
installed correctly.
2. Reinstall the operation
system.
Excluded from boot order.
v Enter the BIOS Setup Utility
and add the device in boot
order.

ThinkPad T43 Series

63

Symptom-to-FRU index

Beep symptoms
Symptom or error

FRU or action, in sequence

One beep and a blank,
unreadable, or flashing LCD.

1. Reseat the LCD
connector.
2. LCD assembly.
3. External CRT.
4. System board.

One long and two short beeps,
and a blank or unreadable
LCD.

1. System board.
2. LCD assembly.
3. DIMM.

Two short beeps with error
codes.

POST error. See “Numeric
error codes” on page 58.

Two short beeps and a blank
screen.

1. System board.
2. DIMM.

Three short beeps, pause,
three more short beeps, and
one short beep.

1. DIMM.
2. System board

One short beep, pause, three
short beeps, pause, three more
short beeps, and one short
beep.
Only the cursor appears.

Reinstall the operating
system.

Four cycles of four short beeps
and a blank screen.

System board (security chip)

Five short beeps and a blank
screen.

System board

No-beep symptoms
Symptom or error

FRU or action, in sequence

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

1. Make sure that every
connector is connected
tightly and correctly.
2. DIMM.
3. System board.

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

1. Reseat DIMM.

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.

The DOS full screen looks
smaller than it should.

Start the ThinkPad
Configuration program and set
the Screen expansion
function.

64

2. System board.

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Symptom-to-FRU index

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. The LCD should be replaced if
the number of missing, discolored, or lighted dots in
any background is:
v XGA: 8 or more bright dots, 8 or more dark dots,
or a total of 9 or more bright and dark dots.
v SXGA+: 11 or more bright dots, 13 or more dark
dots, or a total of 16 or more bright and dark
dots.
Note: A bright dot means a pixel is always on
(white or color.) A dark dot means a pixel is
always off (black color.)
Symptom or error

FRU or action, in sequence

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

System board.

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

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

v
v
v
v

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

Horizontal or vertical lines
displayed on LCD.

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

ThinkPad T43 Series

65

Symptom-to-FRU index

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 42.)
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:
a. Non-ThinkPad devices
b. Devices attached to the port replicator
c. Printer, mouse, and other external devices
d. Battery pack
e. Hard disk drive
f. External diskette drive
g. DIMM
h. CD-ROM and diskette drive in the Ultrabay
i. PC Cards
4. Turn on the computer.
5. Determine whether the problem has been solved.
6. If the problem does not recur, reconnect the removed
devices one at a time until you find the failing FRU.
7. If the problem remains, replace the following FRUs one
at a time (do not replace a nondefective FRU):
a. System board
b. LCD assembly

66

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FRU replacement notices

FRU replacement notices
This section contains notices related to removing and
replacing parts. Read this section carefully before replacing
any FRU.

Screw notices
Loose screws can cause a reliability problem. In the
ThinkPad computer, this problem is addressed with special
nylon-coated screws that have the following characteristics:
v They maintain tight connections.
v They do not easily come loose, even with shock or
vibration.
v They are harder to tighten.
v Each one should be used only once.
Do the following when you service this machine:
v Keep the screw kit (for the P/N, see “Miscellaneous
parts” on page 205) in your tool bag.
v Always use new screws.
v Use a torque screwdriver if you have one.
Tighten screws as follows:
v Plastic to plastic
Turn an additional 90 degrees after the screw head
touches the surface of the plastic part:

90 degrees more

(Cross-section)
v 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)
v Torque driver
If you have a torque driver, refer to the “Torque” column
for each step.

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v Make sure that you use the correct screw. If you have a
torque screwdriver, tighten all screws firmly to the torque
shown in the table. Never use a screw that you
removed. Use a new one. Make sure that all of the
screws are tightened firmly.

Retaining serial numbers
This section includes the following descriptions:
v “Restoring the serial number of the system unit”
v “Retaining the UUID” on page 69
v “Reading or writing the ECA information” on page 69

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.
Before replacing the system board, save the original serial
number by doing the following:
1. Install the ThinkPad Hardware Maintenance Diskette
Version 1.73 or later, and restart the computer.
2. From the main menu, select 1. Set System
Identification.
3. Select 2. Read S/N data from EEPROM.
The serial number of each device in your computer is
displayed; the serial number of the system unit is listed as
follows:
v 20: Serial number
Write down that number.
Note: The serial number of the system unit is also written
on the label attached to the bottom of the computer.
After you have replaced the system board, restore the
serial number by doing the following:
1. Install the ThinkPad Hardware Maintenance Diskette
Version 1.73 or later and restart the computer.
2. From the main menu, select 1. Set System
Identification.
3. Select 1. Add S/N data from EEPROM.
Follow the instructions on the screen.

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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, you must set the
UUID on the new system board as follows:
1. Install the ThinkPad Hardware Maintenance Diskette
Version 1.73 or later, and restart the computer.
2. From the main menu, select 4. Assign UUID.
A new UUID is created and written. If a valid UUID
already exists, it is not overwritten.

Reading or writing the ECA information
Information on Engineering Change Announcements (ECA)
are 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 ThinkPad Hardware Maintenance Diskette Version 1.73
or later.
1. Insert the ThinkPad Hardware Maintenance Diskette
Version 1.73 or later, and restart the computer.
2. From the main menu, select 6. Set ECA Information.
3. To read ECA information, select 2. Read ECA/rework
number from EEPROM and follow the instruction.
4. To read 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 ThinkPad Hardware Maintenance
Diskette Version 1.73 or later to update the EEPROM.
Note: Only the ECA number is stored in the EEPROM.
The machine type of the ECA is assumed be the
same as the machine type of the machine that had
the ECA applied to it.
1. Insert the ThinkPad Hardware Maintenance Diskette
Version 1.73 or later, and restart the computer.
2. From the main menu, select 6. Set ECA Information.

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3. To write ECA information, select 1. Write ECA/rework
number from EEPROM, and follow the instruction.
4. To write 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.

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Removing and replacing a FRU
This section presents directions and drawings for use in
removing and replacing a FRU. Be sure to observe the
following general rules:
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 “FRU replacement
notices” on page 67.
3. Begin by removing any FRUs that have to be removed
before the failing FRU. Any such FRUs are listed at the
top of the page. Remove them in the order in which
they are listed.
4. Follow the correct sequence in the steps for removing
the FRU, as given in the drawings by the numbers in
square callouts.
5. When turning a screw to replace a FRU, turn it in the
direction as given by the arrow in the drawing.
6. When removing the 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. For information about connecting and
arranging internal cables, see “Locations” on page 180.
8. When replacing a FRU, use the correct screw as
shown in the procedures.

DANGER

Before removing any FRU, turn off the computer,
unplug all power cords from electrical outlets,
remove the battery pack, and then disconnect any
interconnecting cables.

Attention: After replacing a FRU, do not turn on the
computer until you have made sure that all screws,
springs, and other small parts are in place and none are
loose inside the computer. Verify this by shaking the
computer gently and listening for rattling sounds. Metallic
parts or metal flakes can cause electrical short circuits.
Attention: The system board is sensitive to, and can be
damaged by, electrostatic discharge. Before touching it,
establish personal grounding by touching a ground point
with one hand or by using an electrostatic discharge (ESD)
strap (P/N 6405959).
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1010 Battery pack (14.1-in. LCD models)
DANGER

Use only the battery specified in the parts list for
your computer. Any other battery could ignite or
explode.

1

(continued)

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Holding the battery release lever in the unlocked position
2, remove the battery pack 3.

2

3

When installing: Install the battery pack along the slide
rails on the left and right sides of the
battery-pack slot. Then make sure that
both battery latches, a and b, are
locked, as in the following figure.

b

a

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1020 Battery pack (15.0-in. LCD models)
DANGER

Use only the battery specified in the parts list for
your computer. Any other battery could ignite or
explode.

Holding the battery release lever in the unlocked position
1, remove the battery pack 2.

1

2

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1030 Ultrabay Slim device
Note
Ultrabay Slim does not accept any of the following
devices:
v Ultrabay Plus devices
v Ultrabay 2000 devices
For devices compatible with the Ultrabay Slim bay,
see “Optional FRUs” on page 209.
Note: When you release the switch in step 1, the lever
pops out. In step 2, pull the lever a little to
release the device from the bay.

1

2

3

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1040 Hard disk drive
Attention
v Do not drop the hard disk drive or apply any
physical shock to it. The hard disk drive is
sensitive to physical shock. Improper handling
can cause damage and permanent loss of data.
v Before removing the drive, have the user make a
backup copy of all the information on it if
possible.
v Never remove the drive while the system is
operating or is in suspend mode.
For access, remove this FRU:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1020 Battery pack (15.0-in. LCD models)” on page 74

1

Note: The hard disk is attached to the cover.
Step

Screw (quantity)

1

HDD screw (1) or security screw (1)

Note: Use a 2.5-mm Allen wrench to remove the security screw.

(continued)

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2

3

3
4
When installing: Make sure that the hard-disk connector
is attached firmly.

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1050 DIMM (optional)
For access, remove this FRU:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1020 Battery pack (15.0-in. LCD models)” on page 74
Note: Loosen the screw 1, but do not remove it.

2

1

(continued)

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3

4

3

When installing: Insert the notched end of the DIMM into
the socket. Press the DIMM firmly, and
pivot it until it snaps into the place.
Make sure that it is firmly fixed in the
slot and does not move easily.

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1060 Keyboard
For access, remove this FRU:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1020 Battery pack (15.0-in. LCD models)” on page 74

1

3

1a

Note: Screw 1a is only for the models with 14.1-in. LCD.
Other models do not have this screw.
Step

Icon

1

3

1a

Screw (quantity)

Color

Torque

M2 × 10 mm, flat-head,
nylon-coated (3)

Black

0.245 Nm
(2.5 kgfcm)

M2 × 10 mm, flat-head,
nylon-coated (1)

Black

0.245 Nm
(2.5 kgfcm)

(continued)

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Press the part indicated by the arrow 2 in the direction of
the arrow. This releases the latches of the keyboard from
the frame, so that the front side of the keyboard pops out.

2

Pull the keyboard a little in the direction of the arrow 3,
and then detach the connector 4.

4

3

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When installing:
1. Attach the connector 1.

1

2. Make sure that the keyboard edges, marked a in the
figure, are under the frame.

a
a
a

(continued)

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3. To make sure that the front side of the keyboard is
housed firmly, gently press the keys with your fingers
and try to slide the keyboard towards you.

4. Make sure that all the projections on the front side of
the keyboard b are firmly attached under the frame.

b

b

5. Secure the keyboard from the underside of the
computer, using the new screws provided with the
keyboard.

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1070 DIMM (standard)
For access, remove these FRUs in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1020 Battery pack (15.0-in. LCD models)” on page 74
v “1060 Keyboard” on page 80

1

2

1

When installing: Insert the notched end of the DIMM into
the socket. Press the DIMM firmly, and
pivot it until it snaps into the place.
Make sure that it is firmly fixed in the
slot and does not move easily.

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1080 Modem daughter card (MDC-2)
For access, remove these FRUs in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1020 Battery pack (15.0-in. LCD models)” on page 74
v “1060 Keyboard” on page 80

2
1

1

Step

Screw (quantity)

Color

Torque

1

M2 × 10 mm, flat-head,
nylon-coated (2)

Black

0.245 Nm
(2.5 kgfcm)

In step 2, remove the card by pulling the tab with your
fingers in the direction of the arrow.
(continued)

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Turn the card over 3, and detach the modem connector
4.

3

4

When installing: Make sure that connector 4 and the
connector on the underside of the card
are firmly attached.

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1090 Bluetooth/Modem daughter card
(BMDC-3)
For access, remove these FRUs in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1020 Battery pack (15.0-in. LCD models)” on page 74
v “1060 Keyboard” on page 80

2
1

1

Step

Screw (quantity)

Color

Torque

1

M2 × 10 mm, flat-head,
nylon-coated (2)

Black

0.245 Nm
(2.5 kgfcm)

In step 2, remove the card by pulling the tab with your
fingers in the direction of the arrow.
(continued)

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Turn the card over 3, and detach the modem connector
4. Then, unplug the jack by using the removal tool
antenna RF connector (P/N: 08K7159) or pick the
connector with your fingers and gently unplug it in direction
of the arrow 5.

3

5

4

When installing: Make sure that connector 4, the jack
5, and the connector on the underside
of the card are firmly attached.

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1100 Palm rest or Palm rest with
fingerprint reader (14.1-in. LCD models)
For access, remove these FRUs in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80

Notes
In models with the fingerprint reader, the sensor has
been attached to the palm rest FRU as the child
part. In case of the fingerprint reader has any
defects and needs to be replaced, you need to
replace the palm rest by following the procedures in
this section. The procedures are same both for the
palm rest without the fingerprint reader and for the
palm rest with the fingerprint reader.
(continued)

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3a
3
1

1
1

1

2

Step

Icon

Screw
cap

Screw (quantity)

Color

Torque

1

1

M2 × 4 mm,
small-head,
nylon-coated (4)

Black

0.245 Nm
(2.5 kgfcm)

2

2

M2 × 5 mm,
bind-head,
nylon-coated (1)

Silver

0.245 Nm
(2.5 kgfcm)

3

4 —

M2 × 14 mm,
bind-head,
nylon-coated (2)

Black

0.204 Nm
(2.0 kgfcm)

3a

4 —

Special screw (1)

Black

0.204 Nm
(2.0 kgfcm)

(continued)

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For a model with a touch pad, detach the touch pad
connector by pulling the tab with your fingers in the
direction of arrow 4. Then remove the palm rest in the
direction of arrow 5. For other models, skip step 4.

4

5

When installing: On a model with a touch pad, make
sure that connector 4 is firmly
attached.

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1110 Keyboard bezel or Keyboard bezel
with fingerprint reader (15.0-in. LCD
models)
For access, remove these FRUs in order:
v “1020 Battery pack (15.0-in. LCD models)” on page 74
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80

Note
In models with the fingerprint reader, the sensor has
been attached to the keyboard bezel FRU as the
child part. In case of the fingerprint reader has any
defects and needs to be replaced, you need to
replace the keyboard bezel by following the
procedures in this section. The procedures are
same both for the keyboard bezel without the
fingerprint reader and for the keyboard bezel with
the fingerprint reader.

1
1

1

Step
1

Icon

1

Screw (quantity)

Color

Torque

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

Black

0.245 Nm
(2.5 kgfcm)

(continued)

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2

2
2

2

2

Step

Icon

2

2

Screw (quantity)

Color

Torque

M2 × 14 mm, bind-head,
nylon-coated (6)

Black

0.245 Nm
(2.5 kgfcm)

3

4

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When installing:
1. Place the keyboard bezel so that the three latches are
fixed in place 1.

1

While inserting the three latches, align the top-left
corner of the keyboard bezel as in figure a.

a

(continued)

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2. Press the left edges 2 and the front edges 3 of the
keyboard bezel until the latches are snapped.

2
2
3
3

3. Attach the touch pad connector 4.

4

(continued)

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4. Secure the keyboard bezel from the underside of the
computer with the screws b and c.

b
b

1

c
c
c
2

5. Attach the keyboard.
(continued)

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Removing and replacing a FRU

6. Secure the keyboard bezel from the underside of the
computer with the screw d. This screw cannot be
fastened properly without attaching keyboard.

d
2

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1120 Mini PCI adapter
For access, remove these FRUs in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1020 Battery pack (15.0-in. LCD models)” on page 74
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1100 Palm rest or Palm rest with fingerprint reader
(14.1-in. LCD models)” on page 89
v “1110 Keyboard bezel or Keyboard bezel with fingerprint
reader (15.0-in. LCD models)” on page 92
Unplug the jacks by using the removal tool antenna RF
connector (P/N: 08K7159) or pick the connectors with your
fingers and gently unplug it in direction of the arrow 1
and 2.

1
2

(continued)

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4
3

3

When installing:
1. Plug the gray cable to jack M, and the black cable to
jack A.

2. Insert the notched end of the card into the socket, and
then press the card firmly. Pivot the card until it snaps
into place. Make sure that it is firmly fixed in the slot
and does not move easily.

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1130 Fan assembly
For access, remove these FRUs in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1020 Battery pack (15.0-in. LCD models)” on page 74
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1100 Palm rest or Palm rest with fingerprint reader
(14.1-in. LCD models)” on page 89
v “1110 Keyboard bezel or Keyboard bezel with fingerprint
reader (15.0-in. LCD models)” on page 92

1

Step

Screw (quantity)

Color

Torque

1

M2 × 10 mm, flat-head,
nylon-coated (3)

Black

0.245 Nm
(2.5 kgfcm)

(continued)

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Important
In step 2, insert the tip of the tool horizontally
between the fan assembly and the CPU, as
indicated by arrow a. Then slightly push the tool
into the gap until the fan assembly comes off. Do
not move the tool upward or downward to remove
the fan assembly between the gap. To do so, the
CPU or the other electrical component may be
damaged.
2
a

(continued)

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Important
In step 2a and 2b, be careful not to damage the
copper plate of the fan assembly. Step 2a is for
the fan assembly, long and for the fan assembly,
long M10. Step 2b is for the fan assembly, short.
Distortion of the fan assembly may cause a thermal
problem.

2a

2b

(continued)

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3

4

When installing:
v Before you attach the fan assembly to the computer,
apply thermal grease on the part marked a as in the
following figures.
v Make sure that the connector 4 is firmly attached.

a

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1140 Backup battery
DANGER

Use only the battery specified in the parts list for
your computer. Any other battery could ignite or
explode.

For access, remove these FRUs in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1020 Battery pack (15.0-in. LCD models)” on page 74
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1100 Palm rest or Palm rest with fingerprint reader
(14.1-in. LCD models)” on page 89
v “1110 Keyboard bezel or Keyboard bezel with fingerprint
reader (15.0-in. LCD models)” on page 92

1

(continued)

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2

When installing: Make sure that the battery connector
2 is firmly attached.

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1150 Speaker assembly
For access, remove these FRUs in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1020 Battery pack (15.0-in. LCD models)” on page 74
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1100 Palm rest or Palm rest with fingerprint reader
(14.1-in. LCD models)” on page 89
v “1110 Keyboard bezel or Keyboard bezel with fingerprint
reader (15.0-in. LCD models)” on page 92

1a
1b

For 14.1-in. LCD models:
Step

Screw (quantity)

Color

Torque

1a

M2 × 10 mm, flat-head,
nylon-coated (2)

Black

0.245 Nm
(2.5 kgfcm)

1b

For 15.0-in. LCD models:
Step

Screw (quantity)

Color

Torque

1a

M2 × 10 mm, bind-head,
nylon-coated (1)

Black

0.245 Nm
(2.5 kgfcm)

1b

M2 × 14 mm, flat-head,
nylon-coated (1)

Black

0.245 Nm
(2.5 kgfcm)

(continued)

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In step 3, release the speaker cables from the cable
guide.

2

4

3

When installing: Make sure that the connector 4 is
firmly attached. Then route the cable as
in 3.

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1160 Keyboard bezel (14.1-in. LCD
models)
For access, remove these FRUs in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1100 Palm rest or Palm rest with fingerprint reader
(14.1-in. LCD models)” on page 89

1

1

Step

Screw (quantity)

Color

Torque

1

M2 × 19 mm, bind-head,
nylon-coated (2)

Black

0.245 Nm
(2.5 kgfcm)

(continued)

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2

a

a
3
b

3

a

Step Screw (quantity)

Color

Torque

2

Black

0.245 Nm
(2.5 kgfcm)

M2 × 4 mm, bind-head,
nylon-coated (1)

In step 3, make sure that all the latches marked a are
detached, and then remove the bezel.
When installing: Make sure that all the latches marked
a are firmly attached. Attach harness
left (b), and then secure the keyboard
bezel with the screws.

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1170 PC Card/ExpressCard slots
(14.1-in. LCD models)
For access, remove these FRUs in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1100 Palm rest or Palm rest with fingerprint reader
(14.1-in. LCD models)” on page 89
v “1150 Speaker assembly” on page 106
v “1160 Keyboard bezel (14.1-in. LCD models)” on page
108

1

Step

Screw (quantity)

Color

Torque

1

M2 × 4 mm, bind-head,
nylon-coated (2)

Black

0.204 Nm
(2.0 kgfcm)

(continued)

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2

When installing: Make sure that the connector on the
underside of the PC Card/ExpressCard
slots 2 is firmly attached, and then
secure the slots with the screws.

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1180 PC Card/ExpressCard slots
(15.0-in. LCD models)
For access, remove these FRUs in order:
v “1020 Battery pack (15.0-in. LCD models)” on page 74
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1110 Keyboard bezel or Keyboard bezel with fingerprint
reader (15.0-in. LCD models)” on page 92
v “1150 Speaker assembly” on page 106

1

Step

Screw (quantity)

Color

Torque

1

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

Black

0.204 Nm
(2.0 kgfcm)

(continued)

112

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2

3

Step

Screw (quantity)

Color

Torque

2

M2 × 4 mm, bind-head,
nylon-coated (1)

Black

0.245 Nm
(2.5 kgfcm)

4

When installing: Make sure that the connector on the
underside of the PC Card/ExpressCard
slots 2 is firmly attached, and then
secure the slots with the screws.

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1190 LCD assembly (14.1-in. LCD
models)
For access, remove these FRUs in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1090 Bluetooth/Modem daughter card (BMDC-3)” on
page 87
v “1100 Palm rest or Palm rest with fingerprint reader
(14.1-in. LCD models)” on page 89
v “1120 Mini PCI adapter” on page 98
v “1160 Keyboard bezel (14.1-in. LCD models)” on page
108

1

1
1

1
Step

Screw (quantity)

Color

Torque

1

M2.5 × 4.8 mm, bind-head,
nylon-coated (4)

Black

0.392 Nm
(4 kgfcm)

(continued)

114

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3

2

4

Step

Screw (quantity)

Color

Torque

2

M2 × 14 mm, bind-head,
nylon-coated (1)

Black

0.245 Nm
(2.5 kgfcm)

After removing the screw, remove bracket 3. Then
detach the LCD connector 4.
When installing: Make sure that the bracket 3 and the
connector 4 are firmly attached, and
then secure them with the screw.
(continued)

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5

Step

Screw (quantity)

Color

Torque

5

M2 × 10 mm, flat-head,
nylon-coated (1)

Black

0.245 Nm
(2.5 kgfcm)

(continued)

116

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Release the antenna cables from the cable guide 6.

6
6
6

6
6
6

When installing: Make sure that the antenna cables are
correctly routed and securely in place.
(continued)

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117

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7
7

When installing: Make sure that the security keyhole
which is on the left-rear corner of the
base cover and the keyhole of the
bracket inside are aligning firmly.

118

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1200 LCD assembly (15.0-in. LCD
models)
For access, remove these FRUs in order:
v “1020 Battery pack (15.0-in. LCD models)” on page 74
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1090 Bluetooth/Modem daughter card (BMDC-3)” on
page 87
v “1110 Keyboard bezel or Keyboard bezel with fingerprint
reader (15.0-in. LCD models)” on page 92
v “1120 Mini PCI adapter” on page 98

1

1

Step

Screw (quantity)

Color

Torque

1

M2 × 10 mm, flat-head,
nylon-coated (2)

Black

0.245 Nm
(2.5 kgfcm)

(continued)

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119

Removing and replacing a FRU

2

3

Step

Screw (quantity)

Color

Torque

2

M2 × 12 mm, flat-head,
nylon-coated (1)

Black

0.245 Nm
(2.5 kgfcm)

When installing: Make sure that the connector 3 is
firmly attached, and then secure it with
the screw.
(continued)

120

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4

4

Step

Screw (quantity)

Color

Torque

4

M2 × 10 mm, flat-head,
nylon-coated (3)

Black

0.245 Nm
(2.5 kgfcm)

(continued)

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121

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Release the antenna cables from the cable guide 5.

5

5
5
5
5

When installing: Make sure that the antenna cables are
correctly routed and securely in place.
(continued)

122

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6

6

When installing: Make sure that the security keyhole
which is on the left-rear corner of the
base cover and the keyhole of the
bracket inside are aligning firmly.

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123

Removing and replacing a FRU

1210 CPU
For access, remove these FRUs in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1100 Palm rest or Palm rest with fingerprint reader
(14.1-in. LCD models)” on page 89
v “1110 Keyboard bezel or Keyboard bezel with fingerprint
reader (15.0-in. LCD models)” on page 92
v “1160 Keyboard bezel (14.1-in. LCD models)” on page
108
v “1190 LCD assembly (14.1-in. LCD models)” on page
114
v “1130 Fan assembly” on page 100
Rotate the head of the screw in the direction shown by
arrow 1 to release the lock; then remove the CPU 2.

1

b

a

2

When installing: Place the CPU on the CPU socket a,
and then rotate the head of the screw in
the direction shown by arrow b to
secure the CPU.

124

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1220 Ultrabay Slim guide rail assembly
(14.1-in. LCD models)
For access, remove these FRUs in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1100 Palm rest or Palm rest with fingerprint reader
(14.1-in. LCD models)” on page 89
v “1150 Speaker assembly” on page 106
v “1160 Keyboard bezel (14.1-in. LCD models)” on page
108
v “1170 PC Card/ExpressCard slots (14.1-in. LCD
models)” on page 110
v “1190 LCD assembly (14.1-in. LCD models)” on page
114

2

1

Step

Screw (quantity)

Color

Torque

1

M2 × 14 mm, bind-head,
nylon-coated (1)

Black

0.204 Nm
(2.0 kgfcm)

2

M2 × 4 mm, bind-head,
nylon-coated (1)

Black

0.204 Nm
(2.0 kgfcm)

(continued)

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Removing and replacing a FRU

3
5

4

3

4

Step

Screw (quantity)

Color

Torque

3

M2 × 10 mm, flat-head,
nylon-coated (3)

Black

0.245 Nm
(2.5 kgfcm)

4

M2 × 3 mm, small-head,
nylon-coated (3)

Silver

0.245 Nm
(2.5 kgfcm)

In step 5, remove the Ultrabay Slim guide rail assembly
and the hard disk drive guide rail together.
Separate the Ultrabay Slim guide rail assembly a and
the hard disk drive guide rail b.

a
b
6

6

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1230 Ultrabay Slim guide rail assembly
(15.0-in. LCD models)
For access, remove these FRUs in order:
v “1020 Battery pack (15.0-in. LCD models)” on page 74
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1110 Keyboard bezel or Keyboard bezel with fingerprint
reader (15.0-in. LCD models)” on page 92
v “1150 Speaker assembly” on page 106

1

2

Step

Screw (quantity)

Color

Torque

1

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

Black

0.204 Nm
(2.0 kgfcm)

2

M2 × 14 mm, bind-head,
nylon-coated (1)

Black

0.204 Nm
(2.0 kgfcm)

(continued)

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Removing and replacing a FRU

3
5
3

3

4

Step

Screw (quantity)

Color

Torque

3

M2 × 10 mm, flat-head,
nylon-coated (5)

Black

0.245 Nm
(2.5 kgfcm)

4

M2 × 3 mm, small-head,
nylon-coated (2)

Black

0.245 Nm
(2.5 kgfcm)

In step 5, remove the Ultrabay Slim guide rail assembly
and the hard disk drive guide rail together.
(continued)

128

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Separate the Ultrabay Slim guide rail assembly a and
the hard disk drive guide rail b.

a

b
6

6

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1240 VGA and Ultrabay Slim device
eject button cable
For access, remove these FRUs in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1020 Battery pack (15.0-in. LCD models)” on page 74
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1100 Palm rest or Palm rest with fingerprint reader
(14.1-in. LCD models)” on page 89
v “1110 Keyboard bezel or Keyboard bezel with fingerprint
reader (15.0-in. LCD models)” on page 92
v “1160 Keyboard bezel (14.1-in. LCD models)” on page
108
v “1190 LCD assembly (14.1-in. LCD models)” on page
114
v “1200 LCD assembly (15.0-in. LCD models)” on page
119
v “1220 Ultrabay Slim guide rail assembly (14.1-in. LCD
models)” on page 125
v “1230 Ultrabay Slim guide rail assembly (15.0-in. LCD
models)” on page 127

1

2
3

Step

Screw (quantity)

Color

Torque

2

Hex stud (2)

Silver

0.392 Nm
(4 kgfcm)

(continued)

130

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4
6
5

Step

Screw (quantity)

Color

Torque

4

M2 × 4 mm, bind-head,
nylon-coated (1)

Black

0.245 Nm
(2.5 kgfcm)

When installing: Make sure that the connector 1 is
firmly attached.

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131

Removing and replacing a FRU

1250 System board and base cover
(14.1-in. LCD models)
For access, remove these FRUs, in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1030 Ultrabay Slim device” on page 75
v “1040 Hard disk drive” on page 76
v “1050 DIMM (optional)” on page 78
v “1060 Keyboard” on page 80
v “1070 DIMM (standard)” on page 84
v “1080 Modem daughter card (MDC-2)” on page 85
v “1090 Bluetooth/Modem daughter card (BMDC-3)” on
page 87
v “1100 Palm rest or Palm rest with fingerprint reader
(14.1-in. LCD models)” on page 89
v “1120 Mini PCI adapter” on page 98
v “1130 Fan assembly” on page 100
v “1140 Backup battery” on page 104
v “1150 Speaker assembly” on page 106
v “1160 Keyboard bezel (14.1-in. LCD models)” on page
108
v “1170 PC Card/ExpressCard slots (14.1-in. LCD
models)” on page 110
v “1190 LCD assembly (14.1-in. LCD models)” on page
114
v “1210 CPU” on page 124
v “1220 Ultrabay Slim guide rail assembly (14.1-in. LCD
models)” on page 125
v “1240 VGA and Ultrabay Slim device eject button cable”
on page 130

132

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Important notice for handling the system board:
The security chip a is soldered on the underside of the
system board as in this figure.

a

The accelerometer chip for the HDD Active Protection
System b is also soldered on the topside of the system
board.

b

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Important
When handling the system board, bear the following
in mind.
v The system board has an accelerometer, which
can be broken by applying several thousands of
G-forces.
Note: Dropping a system board from a height of
as little as 6 inches so that it falls flat on a
hard bench can subject the accelerometer
to as much as 6,000 G’s of shock.
v Be careful not to drop the system board on a
bench top that has a hard surface, such as metal,
wood, or composite.
v If a system board is dropped, you must test it,
using PC-Doctor for DOS, to make sure that the
HDD Active Protection still functions (see below).
Note: If the test shows that HDD Active
Protection is not functioning, be sure to
document the drop in any reject report,
and replace the system board.
v Avoid rough handling of any kind.
v At every point in the process, be sure not to drop
or stack the system board.
v If you put a system board down, be sure to put it
only on a padded surface such as an ESD mat or
conductive corrugated material.
After replacing the system board, run PC-Doctor for
DOS to make sure that HDD Active Protection still
functions. The procedure is as follows:
1. Place the computer on a horizontal surface.
2. Run Diagnostics --> Other Devices --> HDD
Active Protection Test.
Attention: Do not apply physical shock to the
computer while the test is running.

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Before removing the system board, remove the support
structure (a) and the cable guide (b).

b

2

2

a
3
1

When installing: Make sure that the connectors 2 are
firmly attached to the system board.

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5

4

Step

Screw (quantity)

Color

Torque

4

M2 × 10 mm, flat-head,
nylon-coated (1)

Black

0.245 Nm
(2.5 kgfcm)

5

M2.5 × 4 mm, bind-head,
nylon-coated (1)

Black

0.392 Nm
(4 kgfcm)

(continued)

136

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7

6
d
c

8

Step

Screw (quantity)

Color

Torque

6

M2 × 3 mm, small-head,
nylon-coated (1)

Silver

0.245 Nm
(2.5 kgfcm)

7

M2 × 10 mm, flat-head,
nylon-coated (1)

Black

0.245 Nm
(2.5 kgfcm)

In step 8, remove the I/O plate bracket (c) and the
system board (d) together.
(continued)

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137

Removing and replacing a FRU

10
9

11

Step

Screw (quantity)

Color

Torque

9

Hex stud (2)

Silver

0.392 Nm
(4 kgfcm)

10

M2.5 × 3 mm, bind-head,
nylon-coated (1)

Gold

0.392 Nm
(4 kgfcm)

When installing: Attach the system board so that the two
small projections on the base cover fit
into the holes provided, and then secure
the system board with the screw.

138

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Note for sticking a label kit on the base cover
New base cover FRU is shipped with several kinds
of label kit. When you replace the base cover, you
need to stick a homologation label a which has
the same part no. with the label on the old base
cover (defective FRU) on the new base cover.
In some models, you also need to stick one or two
FCC labels b. Check the old base cover and if
there is one or two FCC labels on it, find the same
one from the label kit and stick it on the new base
cover.
Stick the labels on the new base cover as shown in
this figure.
b

b

a

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Removing and replacing a FRU

1260 System board, interposer card,
and base cover (15.0-in. LCD models)
For access, remove these FRUs, in order:
v “1020 Battery pack (15.0-in. LCD models)” on page 74
v “1030 Ultrabay Slim device” on page 75
v “1040 Hard disk drive” on page 76
v “1050 DIMM (optional)” on page 78
v “1060 Keyboard” on page 80
v “1070 DIMM (standard)” on page 84
v “1080 Modem daughter card (MDC-2)” on page 85
v “1090 Bluetooth/Modem daughter card (BMDC-3)” on
page 87
v “1110 Keyboard bezel or Keyboard bezel with fingerprint
reader (15.0-in. LCD models)” on page 92
v “1120 Mini PCI adapter” on page 98
v “1130 Fan assembly” on page 100
v “1140 Backup battery” on page 104
v “1150 Speaker assembly” on page 106
v “1180 PC Card/ExpressCard slots (15.0-in. LCD
models)” on page 112
v “1200 LCD assembly (15.0-in. LCD models)” on page
119
v “1210 CPU” on page 124
v “1230 Ultrabay Slim guide rail assembly (15.0-in. LCD
models)” on page 127
v “1240 VGA and Ultrabay Slim device eject button cable”
on page 130

140

MT 1871/1872/1873/1874/1875/1876

Removing and replacing a FRU

Important notice for handling the system board:
The security chip a is soldered on the underside of the
system board as in this figure.

a

The accelerometer chip for the HDD Active Protection
System b is also soldered on the topside of the system
board.

b

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141

Removing and replacing a FRU

Important
When handling the system board, bear the following
in mind.
v The system board has an accelerometer, which
can be broken by applying several thousands of
G-forces.
Note: Dropping a system board from a height of
as little as 6 inches so that it falls flat on a
hard bench can subject the accelerometer
to as much as 6,000 G’s of shock.
v Be careful not to drop the system board on a
bench top that has a hard surface, such as metal,
wood, or composite.
v If a system board is dropped, you must test it,
using PC-Doctor for DOS, to make sure that the
HDD Active Protection still functions (see below).
Note: If the test shows that HDD Active
Protection is not functioning, be sure to
document the drop in any reject report,
and replace the system board.
v Avoid rough handling of any kind.
v At every point in the process, be sure not to drop
or stack the system board.
v If you put a system board down, be sure to put it
only on a padded surface such as an ESD mat or
conductive corrugated material.
After replacing the system board, run PC-Doctor for
DOS to make sure that HDD Active Protection still
functions. The procedure is as follows:
1. Place the computer on a horizontal surface.
2. Run Diagnostics --> Other Devices --> HDD
Active Protection Test.
Attention: Do not apply physical shock to the
computer while the test is running.

142

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Remove the support structure a and the EMI bracket
b.
2
b

3

a

1

Step

Screw (quantity)

Color

Torque

2

M2 × 10 mm, flat-head,
nylon-coated (1)

Black

0.245 Nm
(2.5 kgfcm)

(continued)

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143

Removing and replacing a FRU

7
6

c

5

6

4

Step

Screw (quantity)

Color

Torque

4

M2 × 10 mm, flat-head,
nylon-coated (1)

Black

0.245 Nm
(2.5 kgfcm)

5

M2.5 × 4.8 mm, bind-head,
nylon-coated (1)

Black

0.392 Nm
(4 kgfcm)

Remove two connectors 6 and then remove the cable
guide c in the direction of arrow 7.
When installing: Make sure that the connectors 6 are
firmly attached to the system board.
(continued)

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8

8
e
d

9

Step

Screw (quantity)

Color

Torque

8

M2 × 4 mm, bind-head,
nylon-coated (3)

Black

0.245 Nm
(2.5 kgfcm)

In step 9, remove the I/O plate bracket (d) and the
system board (e) together.
When installing: Attach the system board so that the two
small projections on the base cover fit
into the holes provided, and then secure
the system board with the screw.
(continued)

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145

Removing and replacing a FRU

10
11

f

g
12

13

Step

Screw (quantity)

Color

Torque

10

Hex stud (2)

Silver

0.392 Nm
(4 kgfcm)

11

M2.5 × 3 mm, flat-head,
nylon-coated (1)

Gold

0.392 Nm
(4 kgfcm)

Remove the system board g from the I/O plate bracket
f in the direction of arrow 12. Then remove the
interposer card 13.
When installing: Make sure that the connectors of the
interposer card are firmly attached to the
system board.

146

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Note for sticking a label kit on the base cover
New base cover FRU is shipped with several kinds
of label kit. When you replace the base cover, you
need to stick a homologation label a which has
the same part no. with the label on the old base
cover (defective FRU) on the new base cover.
In some models, you also need to stick one or two
FCC labels b. Check the old base cover and if
there is one or two FCC labels on it, find the same
one from the label kit and stick it on the new base
cover.
Stick the labels on the new base cover as shown in
this figure.
b

b
a

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147

Removing and replacing a FRU

2010 LCD front bezel (14.1-in. LCD
models)
For access, remove these FRUs in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1090 Bluetooth/Modem daughter card (BMDC-3)” on
page 87
v “1100 Palm rest or Palm rest with fingerprint reader
(14.1-in. LCD models)” on page 89
v “1120 Mini PCI adapter” on page 98
v “1160 Keyboard bezel (14.1-in. LCD models)” on page
108
v “1190 LCD assembly (14.1-in. LCD models)” on page
114

1
1

3

2
3

2

3

3

2
3
3

Step

Screw
cap

Screw (quantity)

Color

Torque

1

M2 × 3 mm, pan-head,
nylon-coated (2)

Black

0.245 Nm
(2.5 kgfcm)

2

M2.5 × 4.8 mm,
bind-head, nylon-coated
(3)

Black

0.392 Nm
(4 kgfcm)

3

M2 × 3 mm, pan-head,
nylon-coated (6)

Black

0.245 Nm
(2.5 kgfcm)

(continued)

148

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4

5

ThinkPad T43 Series

149

Removing and replacing a FRU

2020 LCD front bezel (15.0-in. LCD
models)
For access, remove these FRUs in order:
v “1020 Battery pack (15.0-in. LCD models)” on page 74
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1090 Bluetooth/Modem daughter card (BMDC-3)” on
page 87
v “1110 Keyboard bezel or Keyboard bezel with fingerprint
reader (15.0-in. LCD models)” on page 92
v “1120 Mini PCI adapter” on page 98
v “1200 LCD assembly (15.0-in. LCD models)” on page
119

1

1
1

1

Step

Screw
cap

1

Screw (quantity)

Color

Torque

M2 × 4 mm, bind-head,
nylon-coated (4)

Black

0.245 Nm
(2.5 kgfcm)

(continued)

150

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Removing and replacing a FRU

3

2

ThinkPad T43 Series

151

Removing and replacing a FRU

2030 Inverter card (14.1-in. LCD models)
For access, remove these FRUs in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1090 Bluetooth/Modem daughter card (BMDC-3)” on
page 87
v “1100 Palm rest or Palm rest with fingerprint reader
(14.1-in. LCD models)” on page 89
v “1120 Mini PCI adapter” on page 98
v “1160 Keyboard bezel (14.1-in. LCD models)” on page
108
v “1190 LCD assembly (14.1-in. LCD models)” on page
114
v “2010 LCD front bezel (14.1-in. LCD models)” on page
148

2
1
3
4

Step

Screw (quantity)

Color

Torque

1

M2 × 3 mm, small-head,
nylon-coated (1)

Silver

0.245 Nm
(2.5 kgfcm)

When installing: Make sure that connectors 2 and 3
are firmly attached.

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Cable routing: When replacing the inverter card, route
the connector cable as in this figure:

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153

Removing and replacing a FRU

2040 Inverter card (15.0-in. LCD models)
For access, remove these FRUs in order:
v “1020 Battery pack (15.0-in. LCD models)” on page 74
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1090 Bluetooth/Modem daughter card (BMDC-3)” on
page 87
v “1110 Keyboard bezel or Keyboard bezel with fingerprint
reader (15.0-in. LCD models)” on page 92
v “1120 Mini PCI adapter” on page 98
v “1200 LCD assembly (15.0-in. LCD models)” on page
119
v “2020 LCD front bezel (15.0-in. LCD models)” on page
150

1
2
3

When installing: Make sure that connectors 2 and 3
are firmly attached.
Cable routing: When replacing the inverter card, route
the connector cable as in this figure:

154

MT 1871/1872/1873/1874/1875/1876

Removing and replacing a FRU

2050 Wireless antenna assemblies, LCD
panel, LCD cable assembly, hinges, and
LCD cover (14.1-in. LCD models)
For access, remove these FRUs in order:
v “1010 Battery pack (14.1-in. LCD models)” on page 72
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1090 Bluetooth/Modem daughter card (BMDC-3)” on
page 87
v “1100 Palm rest or Palm rest with fingerprint reader
(14.1-in. LCD models)” on page 89
v “1120 Mini PCI adapter” on page 98
v “1160 Keyboard bezel (14.1-in. LCD models)” on page
108
v “1190 LCD assembly (14.1-in. LCD models)” on page
114
v “2010 LCD front bezel (14.1-in. LCD models)” on page
148
v “2030 Inverter card (14.1-in. LCD models)” on page 152
Note: Step 1 to 5 are only for the models with the
Bluetooth wireless features. For the other models,
skip step 1 to 5.

2

1

(continued)

ThinkPad T43 Series

155

Removing and replacing a FRU

Peel the tape securing the Bluetooth wireless antenna
assembly 3.

3

5

4
4

Step

Screw (quantity)

Color

Torque

4

M2 × 2.7 mm, small-head,
nylon-coated (2)

Yellow

0.245 Nm
(2.5 kgfcm)

(continued)

156

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Removing and replacing a FRU

In step 6, remove the latch bar as in this figure.

6

Lift the latch bar in the direction of the arrow 7, and then
remove the left latch in the direction of the arrow 8.

8

7

(continued)

ThinkPad T43 Series

157

Removing and replacing a FRU

9

Step

Screw (quantity)

Color

Torque

9

M2 × 3 mm, small-head,
nylon-coated (1)

Silver

0.245 Nm
(2.5 kgfcm)

(continued)

158

MT 1871/1872/1873/1874/1875/1876

Removing and replacing a FRU

Slide the spiral tube binding the antenna cables (10a),
and then release the cables from the cable guide (10b).
Lift the LCD panel in the direction of arrow 11, and
detach the wireless LAN antenna 12 and the ThinkLight
13. Then remove the LCD panel in the direction of arrow
14.

12
13

14

11

10b

10a
(continued)

ThinkPad T43 Series

159

Removing and replacing a FRU

Remove the antenna assembly a and hinges b from
the LCD assembly.

a
15
16
16

17

17

b

16
b
16
Step

Screw (quantity)

Color

Torque

16

M2 × 3 mm, small-head,
nylon-coated (4)

Silver

0.245 Nm
(2.5 kgfcm)

Remove two screws c, and detach the wireless AUX
antenna cable (c) from the right hinge.

20

19

18

c
18
Step

Screw (quantity)

Color

Torque

18

M2 × 3 mm, small-head,
nylon-coated (2)

Silver

0.245 Nm
(2.5 kgfcm)

(continued)

160

MT 1871/1872/1873/1874/1875/1876

Removing and replacing a FRU

Turn over the LCD panel and strip off the tape 21
securing the FPC (c). Then detach the connector 22 in
the direction of the arrow.

21

c

22

(continued)

ThinkPad T43 Series

161

Removing and replacing a FRU

Remove the right latch from the LCD cover.

23

24

162

MT 1871/1872/1873/1874/1875/1876

Removing and replacing a FRU

When installing: Follow these steps when you
reassemble the LCD unit.
1. Attach the left latch to the LCD cover.

1

2

(continued)

ThinkPad T43 Series

163

Removing and replacing a FRU

2. Paste three gaskets only for the models with Bluetooth
wireless features. For the other models, skip this step.

95.5 mm
68.5 mm
41.5 mm

3. Connect the LCD cable assembly to the LCD panel
and secure it with the tape.
4. Attach the wireless LAN antenna cables (MAIN, AUX)
and the hinges to the LCD panel.
5. Attach the LCD panel to the LCD cover.
(continued)

164

MT 1871/1872/1873/1874/1875/1876

Removing and replacing a FRU

6. Route the wireless LAN antenna cables as in the
following drawings:
a.

1

2

3

3

(continued)

ThinkPad T43 Series

165

Removing and replacing a FRU

b.

4

4

c.

5
5

(continued)

166

MT 1871/1872/1873/1874/1875/1876

Removing and replacing a FRU

d. Coil the spiral tube round the antenna cables 6.

6

e. Slide the spiral tube in the direction shown by
arrow 7.

7

(continued)

ThinkPad T43 Series

167

Removing and replacing a FRU

Move the spiral tube until it reaches at the cable guide
of the LCD cover as in this figure. Make sure that the
antenna cable is not pinched by cable clip (a).

8

a

7. Secure the LCD panel with the screws.
8. Attach the right latch to the LCD cover.

1

2

168

MT 1871/1872/1873/1874/1875/1876

Removing and replacing a FRU

2060 Wireless antenna assemblies, LCD
panel, LCD cable assembly, hinges, and
LCD cover (15.0-in. LCD models)
For access, remove these FRUs in order:
v “1020 Battery pack (15.0-in. LCD models)” on page 74
v “1040 Hard disk drive” on page 76
v “1060 Keyboard” on page 80
v “1090 Bluetooth/Modem daughter card (BMDC-3)” on
page 87
v “1110 Keyboard bezel or Keyboard bezel with fingerprint
reader (15.0-in. LCD models)” on page 92
v “1120 Mini PCI adapter” on page 98
v “1200 LCD assembly (15.0-in. LCD models)” on page
119
v “2020 LCD front bezel (15.0-in. LCD models)” on page
150
v “2040 Inverter card (15.0-in. LCD models)” on page 154

1
1
1

1

1

1
Step

Screw (quantity)

Color

Torque

1

M2 × 4 mm, bind-head,
nylon-coated (7)

Black

0.245 Nm
(2.5 kgfcm)

(continued)

ThinkPad T43 Series

169

Removing and replacing a FRU

Release the antenna cables 2. At the parts indicated by
arrows a, the antenna cables go through the hinges.
When you route the antenna cables, attach the cables
firmly.

a

2
2

2

a

(continued)

170

MT 1871/1872/1873/1874/1875/1876

Removing and replacing a FRU

4

5

3

b

6
6

7
b

7
6

6
Step

Screw (quantity)

Color

Torque

6

M2 × 3 mm, bind-head,
nylon-coated (4)

Silver

0.245 Nm
(2.5 kgfcm)

(continued)

ThinkPad T43 Series

171

Removing and replacing a FRU

Turn over the LCD panel, and detach the connector 8 in
the direction of the arrow.

8

When installing: Make sure that the FPC connector is
firmly attached to the LCD panel.
(continued)

172

MT 1871/1872/1873/1874/1875/1876

Removing and replacing a FRU

10a
11
10b

12

9
9

d

Note: Step 9 is only for the models with the Bluetooth
wireless features. For the other models, skip this
step.
Step

Screw (quantity)

Color

Torque

9

M2 × 4 mm, bind-head,
nylon-coated (2)

Black

0.245 Nm
(2.5 kgfcm)

Remove the hinges 10a, 10b and the wireless LAN
antenna cables 11, 12
(continued)

ThinkPad T43 Series

173

Removing and replacing a FRU

Cable routing: When you reassemble the LCD unit, do as
follows:
At the left-top corner of the LCD unit, route the antenna
cable as in a. Do not route the cable over the bracket.
To do so, the cable might be pinched between the LCD
front bezel and the LCD cover, and the cable or the other
parts might be damaged or might not be installed properly.
At the points shown as V, route the cable as it goes under
the projections as in b. At the points shown as , push
the cable into the ditch between the LCD cover and the
bracket by using a screwdriver as in c.

a

b
b

c

(continued)

174

MT 1871/1872/1873/1874/1875/1876

Removing and replacing a FRU

Then route the cables to along the cable guides of the
LCD cover. When you route the cables around the LCD
hinges, do as shown in c.

c

c

ThinkPad T43 Series

175

Removing and replacing a FRU

3010 ThinkPad Dock II PCI cover

1

1
2

(Bottom view)

176

MT 1871/1872/1873/1874/1875/1876

Removing and replacing a FRU

3020 ThinkPad Dock II top cover

1
1
1
(Rear view)
Step

Screw (quantity)

Torque

1

M2.5 × 4.8 mm (3)

0.392 Nm
(4 kgfcm)

2

2

2

2

Step

Screw (quantity)

Torque

2

M2.5 × 4.8 mm (4)

0.392 Nm
(4 kgfcm)

(continued)

ThinkPad T43 Series

177

Removing and replacing a FRU

3
3

(Bottom view)
Step

Screw (quantity)

Torque

3

M2.5 × 4.8 mm (6)

0.392 Nm
(4 kgfcm)

(continued)

178

MT 1871/1872/1873/1874/1875/1876

Removing and replacing a FRU

Make sure that the system lock key A is set to the
Unlock position. Release the front latches in step 4, and
then remove the top cover 5. Then detach the connector
cable 6 as in the figure.

5

A

4

6

ThinkPad T43 Series

179

Locations

Locations
Front view
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

180

Wireless status indicator
Bluetooth wireless status indicator (for some
models)
System status indicators
Power status indicators
External monitor connector
Ultrabay Slim status indicator
Ultrabay Slim latch
Ultrabay Slim device eject lever
Ultrabay Slim
TrackPoint pointing stick
Fingerprint reader (for some models)
TrackPoint buttons
Touch pad buttons
Touch pad
UltraNav
Access IBM button
Volume control buttons
Power switch
ThinkLight

MT 1871/1872/1873/1874/1875/1876

Locations

19
1
2
18
17
16
3

4
14
13
10
15

12

11

9

8

7

6

5

ThinkPad T43 Series

181

Locations

Rear view
1
2

Power status indicators
Bluetooth wireless status indicator (for some
models)
PC Card/ExpressCard eject buttons
PC Card/ExpressCard slots
Microphone jack
Stereo headphone jack
RJ-45 (Ethernet) connector
RJ-11 (modem) connector
TV-out connector
Universal serial bus (USB) connectors
Security keyhole
Parallel connector
AC power connector

3
4
5
6
7
8
9
10
11
12
13

2
1
3

4
5
6
13

182

12

11

10

9

8

MT 1871/1872/1873/1874/1875/1876

7

Locations

Bottom view
1
2
3
4
5
6
7
8
9

Hard disk drive
Optional DIMM slot
Battery pack
Battery pack lock (only for 14.1-in LCD models)
Docking connector
Battery pack latch
Infrared port
Built-in stereo speakers
LCD latch

2
1

3

4
5
6

9
8
7

ThinkPad T43 Series

183

Parts list

Parts list
v Each FRU is available for all types or models, unless
specific types or models are specified.
v A CRU (customer replaceable unit) is identified by a
single asterisk (*) or two asterisks (**) in the CRU ID
column. An N in the CRU ID column means the part is
not a CRU. A single asterisk (*) means the part is a Tier
1 CRU; two asterisks (**) means the part is a Tier 2
CRU.
v FRUs marked with OP are available as options.

184

MT 1871/1872/1873/1874/1875/1876

Parts list

Overall
1

22

21
2a

20

a
2b

b

3

f

4

19
18
17

c
5

8

6

d

7

16

15

e
14
23
9

13

10

12

11

ThinkPad T43 Series

185

Parts list
No. FRU
a-f

P/N

CRU
ID

See “Miscellaneous parts” on page 205.

1

LCD unit (see “14.1-in. LCD FRUs” on page 194
and “15.0-in. LCD FRUs” on page 196.)

N

2a

Keyboard bezel assembly (14.1-in.)
v 1871-CTO, 11x, 12x, 14x, 18x, 19x,
48x, 4Ax, 4Cx, C1x
v 1872-CTO, 12x, 4Ax, C1x
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, D1x, D2x, E1x

91P9540

N

2b

Keyboard bezel assembly with touch pad
(15.0-in.)
v 1871-CTO, 22x, 23x, 26x, 27x
v 1875-CTO, D3x, D9x, EAx, ECx
v 1876-CTO, DBx, EEx

91P8735

N

Keyboard bezel assembly with fingerprint
reader (15.0-in.)
v 1871-CTO, 24x, 25x, 86x, F4x
v 1875-CTO, DAx, DCx, DMx, EBx,
EDx, F4x
v 1876-CTO, EFx

26R8411

N

91P8685

N

Ultrabay guide rail assembly (14.1-in.)
v 1871-CTO, 11x, 12x, 14x, 18x, 19x,
48x, 4Ax, 4Cx, C1x
v 1872-CTO, 12x, 4Ax, C1x
v 1875-CTO, D1x, D2x, E1x

91P8394

N

Ultrabay guide rail assembly (14.1-in.,
fingerprint reader)
v 1871-CTO, 13x, 15x, 16x, 17x, 1Gx,
1Hx, 4Bx, F1x
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, D6x, DKx, DLx, E5x, F1x

91P8682

N

Ultrabay guide rail assembly (15.0-in.)
v 1871-CTO, 22x, 23x, 26x, 27x
v 1875-CTO, D3x, D9x, EAx, ECx
v 1876-CTO, DBx, EEx

13R2920

N

Ultrabay guide rail assembly (15.0-in.,
fingerprint reader)
v 1871-CTO, 24x, 25x, 86x, F4x
v 1875-CTO, DAx, DCx, DMx, EBx,
EDx, F4x
v 1876-CTO, EFx

91P8683

N

3

(continued)

186

MT 1871/1872/1873/1874/1875/1876

Parts list
No. FRU
4

P/N

CRU
ID

HLDS

92P6579

*

TEAC

92P5991

*

DVD drive 8x OP
v 1871-CTO, 11x, 18x, 48x
v 1875-CTO, D1x, D3x

DVD/CD-RW combo drive OP
v 1871-CTO, 12x, 13x, 15x, 16x, 19x, 1Gx, 22x, 23x, 24x,
25x, 27x, 4Ax, 4Bx, 4Cx, 86x, C1x, F1x, F4x
v 1872-CTO, 12x, 4Ax, C1x
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, D2x, D6x, D9x, DAx, DCx, DKx, DLx, DMx,
F1x, F4x
v 1876-CTO, DBx
PCC

39T2505

*

HLDS

13N6769

*

DVD-RAM/RW drive (PCC) OP
v 1871-CTO, 14x, 17x, 1Hx

39T2507

*

Travel cover
v 1875-CTO, xxE, xxJ, xxU
v 1876-CTO, xxE, xxJ, xxU

13N5108

*

For optional Ultrabay devices, see “Optional FRUs” on page
209.
5

Hard disk drive, 30 GB, 9.5 mm, 4,200 rpm
v Supported by CTO
Fujitsu

13N6903

*

HGST

13N6883

*

Fujitsu

13N6885

*

HGST

13N6905

*

Hard disk drive, 40 GB, 9.5 mm, 4,200 rpm
v Supported by CTO

Hard disk drive, 40 GB, 9.5 mm, 5,400 rpm
v 1871-CTO, 11x, 12x, 13x, 14x, 15x, 16x, 17x, 18x, 1Gx,
1Hx, 22x, 23x, 24x, 48x, 4Ax, 4Bx, 4Cx, 86x, C1x, F1x,
F4x
v 1872-CTO, 12x, 4Ax, C1x
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, D1x, D2x, D3x, D6x, D9x, DAx, DCx, DKx,
F1x, F4x
v 1876-CTO, DBx
Fujitsu

13N6913

*

HGST

39T2521

*

Toshiba

13N6919

*

(continued)

ThinkPad T43 Series

187

Parts list
No. FRU
5

P/N

CRU
ID

Fujitsu

13N6915

*

HGST

39T2523

*

13N6897

*

Fujitsu

13N6917

*

HGST

39T2525

*

13N5530

*

Cover, Hard disk drive (15.0-in.)
13R2922
v 1871-CTO, 2xx, 8xx, F4x
v 1875-CTO, D3x, D9x, DAx, DCx, DMx,
EAx, EBx, ECx, EDx, F4x
v 1876-CTO, DBx, EEx EFx

*

VGA and Ultrabay eject button cable
(14.1-in.)
v 1871-CTO, 1xx, 4xx, C1x, F1x
v 1872-CTO, 1xx, 4xx, C1x
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, D1x, D2x, D6x, DKx, DLx,
E1x, E5x, F1x

91P6894

N

VGA and Ultrabay eject button cable
91P6895
(15.0-in.)
v 1871-CTO, 2xx, 8xx, F4x
v 1875-CTO, D3x, D9x, DAx, DCx, DMx,
EAx, EBx, ECx, EDx, F4x
v 1876-CTO, DBx, EEx EFx

N

Hard disk drive, 60 GB, 9.5 mm, 5,400 rpm
v 1871-CTO, 19x
v 1875-CTO, DLx, DMx

Hard disk drive, 60 GB, 9.5 mm, 7,200
rpm, HGST
v Supported by CTO
Hard disk drive, 80 GB, 9.5 mm, 5,400 rpm
v 1871-CTO, 25x, 26x, 27x

6

7

Cover, Hard disk drive (14.1-in.)
v 1871-CTO, 1xx, 4xx, C1x, F1x
v 1872-CTO, 1xx, 4xx, C1x
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, D1x, D2x, D6x, DKx, DLx,
E1x, E5x, F1x

(continued)

188

MT 1871/1872/1873/1874/1875/1876

Parts list
No. FRU
8

9

P/N

CRU
ID

ThinkPad Integrated 56K Modem
(MDC-2)
v 1871-CTO, 11x, 12x, 13x, 15x, 16x,
17x, 18x, 19x, 1Gx, 1Hx, 22x, 23x,
24x, 26x, 27x, 48x, 4Ax, 86x, C1x
v 1872-CTO, 12x, 4Ax, C1x
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, D1x, D2x, D3x, D6x, D9x,
DAx, DCx, DKx, DLx, DMx, E1x, E5x,
EAx, EBx, ECx, EDx
v 1876-CTO, DBx, EEx, EFx

93P4212

**

IBM Integrated Bluetooth IV with 56K
Modem (BMDC-3)
v 1871-CTO, 14x, 25x, 4Bx, 4Cx, Fxx
v 1875-CTO, Fxx

39T0022

**

256-MB DDR2-533 SDRAM SO-DIMM
(PC2-4200) card OP
v 1871-CTO, 11x, 12x, 13x, 16x, 22x,
24x
v 1872-CTO, 12x

73P3841

*

512-MB DDR2-533 SDRAM SO-DIMM
(PC2-4200) card OP
v 1871-CTO, 14x, 15x, 17x, 18x, 19x,
1Gx, 1Hx, 23x, 25x, 26x, 27x, 48x,
4Ax, 4Bx, 4Cx, 8xx, Cxx, Fxx
v 1872-CTO, 4Ax, Cxx
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, DKx, DLx, DMx, Fxx

73P3843

*

1-GB DDR2-533 SDRAM SO-DIMM
(PC2-4200) card OP
v 1875-CTO, D1x, D2x, D3x, D6x, D9x,
DAx, DCx
v 1876-CTO, DBx

73P3845

*

2-GB DDR2-533 SDRAM SO-DIMM
(PC2-4200) card OP
v Supported by CTO

73P3847

*

(continued)

ThinkPad T43 Series

189

Parts list
No. FRU
10

P/N

CRU
ID

Sanyo

92P1087

*

Sony

92P1089

*

Panasonic

92P1091

*

Sanyo

92P1077

*

Sony

92P1073

*

Panasonic

92P1069

*

91P9719

*

Battery pack, Li-ion (6 cell) 4.8 Ah OP
v 1871-CTO, 1xx, 2xx, 4xx, 8xx, Cxx, Fxx
v 1872-CTO, 1xx, Cxx
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, Dxx, Fxx
v 1876-CTO, Dxx

Battery pack, Li-ion (9 cell) 7.2 Ah OP
v Supported by CTO

Dummy battery pack
v Supported by CTO

For optional battery packs, see “Optional FRUs” on page
209.
11

Base cover assembly 1871 (14.1-in.)
v 1871-CTO, 1xx, 4xx, C1x, F1x

26R8971

N

Base cover assembly 1871 (15.0-in.)
v 1871-CTO, 2xx, 8xx, F4x

26R8975

N

Base cover assembly 1872 (14.1-in.)
v 1872-CTO, 1xx, 4xx, C1x

26R8972

N

Base cover assembly 1872 (15.0-in.)
v 1872-CTO

26R8976

N

Base cover assembly 1873 (14.1-in.)
v 1873-4Ax

26R9190

N

Base cover assembly 1874 (14.1-in.)
v 1874-4Ax

26R9191

N

Base cover assembly 1875 (14.1-in.)
v 1875-CTO, D1x, D2x, D6x, DKx, DLx,
E1x, E5x, F1x

26R8973

N

Base cover assembly 1875 (15.0-in.)
26R8977
v 1875-CTO, D3x, D9x, DAx, DCx, DMx,
EAx, EBx, ECx, EDx, F4x

N

Base cover assembly 1876 (15.0-in.)
v 1876-CTO, DBx, EEx EFx

N

26R8974

(continued)

190

MT 1871/1872/1873/1874/1875/1876

Parts list
No. FRU

P/N

CRU
ID

12

Cover, DIMM slot

13N5667

*

13

Speaker (14.1-in.)
v 1871-CTO, 1xx, 4xx, C1x, F1x
v 1872-CTO, 1xx, 4xx, C1x
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, D1x, D2x, D6x, DKx, DLx,
E1x, E5x, F1x

39T0797

N

Speaker (15.0-in.)
39T0800
v 1871-CTO, 2xx, 8xx, F4x
v 1875-CTO, D3x, D9x, DAx, DCx, DMx,
EAx, EBx, ECx, EDx, F4x
v 1876-CTO, DBx, EEx EFx

N

14

Intel PRO Wireless 2200BG Mini-PCI Adapter
US
v 1871-CTO, 1xU, 22U, 24U, 4AU
v 1872-CTO, 1xU, 4AU
v 1873-4Ax for xxF, xxU, xxV
v 1874-4Ax for xxF, xxU, xxV
v 1875-CTO, DKU, DLU, DMU

93P3483

**
(*1)

ROW
93P3485
v 1871-CTO, 1xx except 1xU, 23x, 25x,
26x, 27x, 4Ax except 4AU
v 1872-CTO, 1xx except 1xU, 4Ax
except 4AU
v 1873-4Ax for xxA, xxB, xxG, xxL, xxM,
xxP, xxQ, xxS, xxY
v 1874-4Ax for xxA, xxB, xxG, xxL, xxM,
xxP, xxQ, xxS, xxY
v 1875-CTO, D1U, D3U, DKF, DLF,
DMF

**
(*1)

*1: These Mini PCI Adapters are only CRUs in the 14.1-in.
LCD models. They are not CRUs in the 15.0-in. LCD
models.

(continued)

ThinkPad T43 Series

191

Parts list
No. FRU
14

P/N

CRU
ID

Intel PRO Wireless 2915ABG Mini-PCI Adapter
US
v 1871-CTO,
v 1872-CTO,
v 1875-CTO,
DCU
v 1876-CTO,

93P4235

**
(*1)

EU
v 1871-CTO, 25x, FxG
v 1875-CTO, FxG

93P4237

**
(*1)

HB
v 1871-CTO, 25x, FxG
v 1875-CTO, FxG

93P4241

**
(*1)

JP
v 1871-CTO, xxE, xxJ
v 1875-CTO, xxE, xxJ

93P4239

**
(*1)

48U, 4BU, 4CU, 86U, C1U
C1U
D2U, D6U, D9U, DAU,
DBU

*1: These Mini PCI Adapters are only CRUs in the 14.1-in.
LCD models. They are not CRUs in the 15.0-in. LCD
models.
15

System board assembly, Intel 915GM,
Gigabit Ethernet with security
chip/fingerprint reader
v 1871-CTO, 11x, 12x, 13x, 14x, 15x,
16x, 17x, 18x, 19x, 1Gx, 1Hx, 22x,
23x, 24x, 25x, 26x, 27x, 48x, 4Ax,
4Bx, 4Cx, 86x, C1x
v 1872-CTO, 12x, 4Ax, C1x
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, D1x, D2x, D3x, D6x, D9x,
DAx, DCx, DKx, DLx, DMx, E1x, E5x,
EAx, EBx, ECx, EDx, F1x
v 1876-CTO, DBx, EEx, EFx

39T0324

N

16

PC Card/ExpressCard slots

91P8833

N

17

CPU assembly, Intel Pentium M
processor 730 (1.6 GHz)
v 1871-CTO, 1xx, 22x, 23x, 24x, 27x
v 1872-CTO, 1xx
v 1875-CTO, D3x, DKx, E1x, E5x, EAx,
EBx

39T0045

N

CPU assembly, Intel Pentium M
processor 740 (1.73 GHz)
v 1875-CTO, D1x, D2x, D6x, D9x, DAx,
DCx, DLx, DMx
v 1876-CTO, DBx

39T0046

N

(continued)

192

MT 1871/1872/1873/1874/1875/1876

Parts list
No. FRU

P/N

CRU
ID

17

CPU assembly, Intel Pentium M
processor 750 (1.86 GHz)
v 1871-CTO, 25x, 26x, 4xx, 8xx, C1x,
Fxx
v 1872-CTO, C1x
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, ECx, EDx, Fxx
v 1876-CTO, EEx, EFx

39T0047

N

CPU assembly, Intel Pentium M
processor 760 (2.0 GHz)
v Supported by CTO

39T0048

N

CPU assembly, Intel Pentium M
processor 770 (2.13 GHz)
v Supported by CTO

39T0049

N

18

Fan assembly

26R8197

N

19

Backup battery

02K6572

**

Note: This FRU is only a CRU in the 14.1-in. LCD models.
It is not a CRU in the 15.0-in. LCD models.
20

Palm rest assembly with touch pad
(14.1-in.)
v 1871-CTO, 22x, 23x, 26x, 27x
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, D3x, D9x, EAx, ECx
v 1876-CTO, DBx, EEx

91P8734

**

Palm rest assembly without touch pad
(14.1-in.)
v Supported by CTO

91P8399

**

Palm rest assembly with touch pad,
fingerprint reader (14.1-in.)
v 1871-CTO, 24x, 25x, 86x, F4x
v 1875-CTO, DAx, DCx, DMx, EBx,
EDx, F4x
v 1876-CTO, EFx

26R8410

**

91P8684

21

Keyboard (see “Keyboard” on page 199.)

22

Track point stick caps

**

23

Interposer card
39T0030
v 1871-CTO, 2xx, 8xx, F4x
v 1875-CTO, D3x, D9x, DAx, DCx, DMx,
EAx, EBx, ECx, EDx, F4x
v 1876-CTO, DBx, EEx EFx

N

—

Telephone cable (SAN TAI)

91P6839

*

—

Thermal grease

46L4855

N

91P9642

ThinkPad T43 Series

*

193

Parts list

14.1-in. LCD FRUs
8

1

a

b

7
6

2

3

e

5

4

d
c

194

MT 1871/1872/1873/1874/1875/1876

Parts list

14.1-in. XGA TFT
No. FRU

P/N

CRU
ID

a-d

See “Miscellaneous parts” on page 205.

1

LCD cover kit (WW)
v 1871-CTO, 1xx, 4xx, C1x, F1x
v 1872-CTO, 1xx, 4xx, C1x
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, D1x, D2x, D6x, DKx, DLx,
E1x, E5x, F1x

13R2569

N

2

Hinges, 14.1-in.
v 1871-CTO, 1xx, 4xx, C1x, F1x
v 1872-CTO, 1xx, 4xx, C1x
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, D1x, D2x, D6x, DKx, DLx,
E1x, E5x, F1x

91P8388

N

3

LCD cable assembly, 14.1-in. XGA
v 1871-CTO, 1xx, 4xx, C1x, F1x
v 1872-CTO, 1xx, 4xx, C1x
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, D1x, D2x, D6x, DKx, DLx,
E1x, E5x, F1x

91P6889

N

4

Wireless antenna assembly, 14.1-in.
v 1871-CTO, 1xx, 4xx, C1x, F1x
v 1872-CTO, 1xx, 4xx, C1x
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, D1x, D2x, D6x, DKx, DLx,
E1x, E5x, F1x

91P6896

N

5

Bluetooth wireless antenna assembly,
14.1-in.
v 1871-CTO, 14x, 4Bx, 4Cx, F1x
v 1875-CTO, F1x

91P6897

N

6

Inverter card, 14.1-in.
v 1871-CTO, 1xx, 4xx, C1x, F1x
v 1872-CTO, 1xx, 4xx, C1x
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, D1x, D2x, D6x, DKx, DLx,
E1x, E5x, F1x

27K9972

N

7

LCD panel, 14.1-in. XGA
v 1871-CTO, 1xx, 4xx, C1x, F1x
v 1872-CTO, 1xx, 4xx, C1x
v 1873-4Ax
v 1874-4Ax
v 1875-CTO, D1x, D2x, D6x, DKx, DLx, E1x, E5x, F1x

8

HYDIS

92P6733

N

LG

92P6726

N

Samsung

92P6759

N

26R8409

N

Clear plate

ThinkPad T43 Series

195

Parts list

15.0-in. LCD FRUs
1

8

7

6

5

2

3

4

196

MT 1871/1872/1873/1874/1875/1876

Parts list

15.0-in. XGA TFT
No. FRU

P/N

CRU
ID

1

LCD cover kit, 15.0-in. (WW)
v 1871-CTO, 22x, 23x, 24x, 25x, 26x,
27x, 86x
v 1875-CTO, F4x, D3x, D9x, DAx, DCx,
DMx, EAx, EBx, ECx, EDx
v 1876-CTO, DBx, EEx, EFx

13R2917

N

2

Hinges, 15.0-in.
v 1871-CTO, 22x, 23x, 24x, 25x, 26x,
27x, 86x
v 1875-CTO, F4x, D3x, D9x, DAx, DCx,
DMx, EAx, EBx, ECx, EDx
v 1876-CTO, DBx, EEx, EFx

13R2918

N

3

LCD cable assembly, 15.0-in. XGA
v 1871-CTO, 22x, 23x, 24x, 25x, 26x,
27x, 86x
v 1875-CTO, F4x, D3x, D9x, DAx, DCx,
DMx, EAx, EBx, ECx, EDx
v 1876-CTO, DBx, EEx, EFx

91P6891

N

4

Bluetooth wireless antenna, 15.0-in.
v 1871-CTO, 22x, 23x, 24x, 25x, 26x,
27x, 86x
v 1875-CTO, F4x, D3x, D9x, DAx, DCx,
DMx, EAx, EBx, ECx, EDx
v 1876-CTO, DBx, EEx, EFx

91P6860

N

5

Antenna, 15.0-in.
v 1871-CTO, 22x, 23x, 24x, 25x, 26x,
27x, 86x
v 1875-CTO, F4x, D3x, D9x, DAx, DCx,
DMx, EAx, EBx, ECx, EDx
v 1876-CTO, DBx, EEx, EFx

91P6859

N

6

Inverter card, 15.0-in. XGA
v 1871-CTO, 22x, 23x, 24x, 25x, 26x,
27x, 86x
v 1875-CTO, F4x, D3x, D9x, DAx, DCx,
DMx, EAx, EBx, ECx, EDx
v 1876-CTO, DBx, EEx, EFx

27K9974

N

7

LCD panel, 15.0-in. XGA
v 1871-CTO, 22x, 23x, 24x, 25x, 26x, 27x, 86x
v 1875-CTO, F4x, D3x, D9x, DAx, DCx, DMx, EAx, EBx,
ECx, EDx
v 1876-CTO, DBx, EEx, EFx

8

LG

92P6699

N

Samsung

92P6701

N

26R8409

N

Clear plate

ThinkPad T43 Series

197

Parts list

15.0-in. SXGA+ IPS TFT
Note: Only supported by CTO.
No. FRU

P/N

CRU
ID

1

LCD cover kit, 15.0-in. (WW)

13R2917

N

2

Hinges, 15.0-in.

13R2918

N

3

LCD cable assembly, 15.0-in. SXGA+

91P6892

N

4

Bluetooth wireless antenna, 15.0-in.

91P6860

N

5

Antenna, 15.0-in.

91P6859

N

6

Inverter card, 15.0-in. IPS

27K9976

N

7

LCD panel, 15.0 SXGA+
ID TECH

92P6680

N

LG

92P6761

N

Clear plate

26R8409

N

8

198

MT 1871/1872/1873/1874/1875/1876

Parts list

Keyboard
Keyboards for 15.0-in. LCD models
Language

P/N (NMB) P/N
(ALPS)

P/N
(Chicony)

CRU
ID

Arabic

39T0664

39T0725

39T0786

**

93P4801

93P4861

13N9914

39T0659

39T0720

39T0781

93P4796

93P4856

13N9909

Chinese,
Traditional

39T0661

39T0722

39T0783

93P4798

93P4858

13N9911

Czech

39T0665

39T0726

39T0787

93P4802

93P4862

13N9915

39T0652

39T0713

39T0774

93P4789

93P4849

13N9902

39T0649

39T0710

39T0771

93P4786

93P4846

13N9899

39T0645

39T0706

39T0767

93P4782

93P4842

13N9895

39T0643

39T0704

39T0765

Belgian

Danish

Dutch

English, U.K.

English, U.S.

93P4780

93P4840

13N9893

English, U.S.
(International)

39T0672

—

—

91P9248

—

—

French, Canadian

39T0646

39T0707

39T0768

93P4783

93P4843

13N9896

French, Canadian
(058)

39T0673

39T0733

39T0795

93P4809

93P4869

13N9923

French, European

39T0648

39T0709

39T0770

93P4785

93P4845

13N9898

39T0647

39T0708

39T0769

93P4784

93P4844

13N9897

39T0667

39T0728

39T0789

93P4804

93P4864

13N9917

39T0666

39T0727

39T0788

93P4803

93P4863

13N9916

39T0663

39T0724

39T0785

93P4800

93P4860

13N9913

39T0653

39T0714

39T0775

93P4790

93P4850

13N9903

German

Greek

Hungarian

Hebrew

Italian

(continued)

ThinkPad T43 Series

199

Parts list
Language

P/N (NMB) P/N
(ALPS)

P/N
(Chicony)

CRU
ID

Japanese

39T0644

39T0705

39T0766

**

93P4781

93P4841

13N9894

39T0658

39T0719

39T0780

93P4795

93P4855

13N9908

39T0651

39T0712

39T0773

93P4788

93P4848

13N9901

39T0669

39T0730

39T0791

93P4806

93P4866

13N9919

39T0656

39T0717

39T0778

93P4793

93P4853

13N9906

39T0662

39T0723

39T0784

93P4799

93P4859

13N9912

39T0668

39T0729

39T0790

93P4805

93P4865

13N9918

39T0670

39T0731

39T0792

93P4807

93P4867

13N9920

39T0654

39T0715

39T0776

93P4791

93P4851

13N9904

Spanish, Latin
American

39T0657

39T0718

39T0779

93P4794

93P4854

13N9907

Swedish or Finnish

39T0650

39T0711

39T0772

93P4787

93P4847

13N9900

39T0655

39T0716

39T0777

93P4792

93P4852

13N9905

39T0671

39T0732

39T0793

93P4808

93P4868

13N9921

39T0660

39T0721

39T0782

93P4797

93P4857

13N9910

Korean

Norwegian

Polish

Portuguese

Russian

Slovak

Slovenian

Spanish, European

Swiss

Thai

Turkish

200

MT 1871/1872/1873/1874/1875/1876

Parts list

Keyboards for 14.1-in. LCD models
Language

P/N (NMB) P/N
(ALPS)

P/N
(Chicony)

CRU
ID

Arabic

39T0540

13N9978

39T0602

**

08K5065

—

13N9852

39T0535

13N9973

39T0597

08K5060

—

13N9847

Chinese,
Traditional

39T0537

13N9975

39T0599

08K5062

—

13N9849

Czech

39T0541

13N9979

39T0603

08K5066

—

13N9853

39T0528

13N9966

39T0590

08K5053

—

13N9840

39T0525

13N9963

39T0587

08K5050

—

13N9837

39T0521

13N9959

39T0583

08K5046

—

13N9833

39T0519

13N9957

39T0581

08K5044

—

13N9831

English, U.S.
(International)

39T0548

—

—

93P4719

—

—

French, Canadian

39T0522

13N9960

39T0584

Belgian

Danish

Dutch

English, U.K.

English, U.S.

08K5047

—

13N9834

French, Canadian
(058)

39T0549

13N9987

39T0611

93P4744

—

13N9861

French, European

39T0524

13N9962

39T0586

08K5049

—

13N9836

39T0523

13N9961

39T0585

08K5048

—

13N9835

39T0543

13N9981

39T0605

08K5068

—

13N9855

39T0542

13N9980

39T0604

08K5067

—

13N9854

39T0539

13N9977

39T0601

93P4711

—

13N9851

39T0529

13N9967

39T0591

08K5054

—

13N9841

39T0520

13N9958

39T0582

08K5045

—

13N9832

German

Greek

Hungarian

Hebrew

Italian

Japanese

(continued)
ThinkPad T43 Series

201

Parts list
Language

P/N (NMB) P/N
(ALPS)

P/N
(Chicony)

CRU
ID

Korean

39T0534

13N9972

39T0596

**

08K5059

—

13N9846

39T0527

13N9965

39T0589

08K5052

—

13N9839

39T0545

13N9983

39T0607

08K5070

—

13N9857

39T0532

13N9970

39T0594

08K5057

—

13N9844

39T0538

13N9976

39T0600

08K5063

—

13N9850

39T0544

13N9982

39T0606

08K5069

—

13N9856

39T0546

13N9984

39T0608

08K5071

—

13N9858

39T0530

13N9968

39T0592

08K5055

—

13N9842

Spanish, Latin
American

39T0533

13N9971

39T0595

08K5058

—

13N9845

Swedish or Finnish

39T0526

13N9964

39T0588

08K5051

—

13N9838

39T0531

13N9969

39T0593

08K5056

—

13N9843

39T0547

13N9985

39T0609

08K5072

—

13N9859

39T0536

13N9974

39T0598

08K5061

—

13N9848

Norwegian

Polish

Portuguese

Russian

Slovak

Slovenian

Spanish, European

Swiss

Thai

Turkish

202

MT 1871/1872/1873/1874/1875/1876

Parts list

Recovery CDs
Windows XP Professional
Windows XP Professional is preinstalled as the operating
system in the following models:
v 1871-1xx except 13x, 2xx, 4xx, 8xx, Cxx, Fxx
v 1872-1xx, 4xx, Cxx
v 1873-4Ax
v 1874-4Ax
v 1875-Dxx, Fxx
Language

P/N

CRU
ID

Arabic

39K7811

*

Chinese, Simplified

39K7803

Chinese, Traditional

39K7804

Chinese, Traditional (Hong Kong S.A.R.)

39K7805

Czech

39K7810

Danish

39K7799

Dutch

39K7802

English, U.K.

39K7792

English, U.S.

39K7791

Finnish

39K7800

French

39K7793

German

39K7794

Greek

39K7815

Hebrew

39K7808

Hungarian

39K7814

Italian

39K7796

Japanese

39K7806

Korean

39K7807

Norwegian

39K7801

Polish

39K7809

Portuguese, Brazilian

39K7797

Russian

39K7812

Spanish

39K7795

Swedish

39K7798

Turkish

39K7813

ThinkPad T43 Series

203

Parts list

Windows XP Home Edition
Windows XP Home Edition is preinstalled as the operating
system in the following models:
v 1871-13x
Language

P/N

CRU
ID

Arabic

39K8011

*

Chinese, Simplified

39K8003

Chinese, Traditional

39K8004

Chinese, Traditional (Hong Kong S.A.R.)

39K8005

Czech

39K8010

Danish

39K7999

Dutch

39K8002

English, U.K.

39K7992

English, U.S.

39K7991

Finnish

39K8000

French

39K7993

German

39K7994

Greek

39K8015

Hebrew

39K8008

Hungarian

39K8014

Italian

39K7996

Japanese

39K8006

Korean

39K8007

Norwegian

39K8001

Polish

39K8009

Portuguese, Brazilian

39K7997

Russian

39K8012

Spanish

39K7995

Swedish

39K7998

Turkish

39K8013

204

MT 1871/1872/1873/1874/1875/1876

Parts list

Miscellaneous parts
FRU

P/N

CRU
ID

Screw kit (including nylon-coated screws):
v M2 × 2.7 mm (silver), small head (10)
v M2 × 3 mm (silver), small head (20)
v M2 × 3 mm (from outside), pan head (10)
v M2 × 4 mm (black), bind head (30)
v M2 × 4 mm (black), small head (10)
v M2 × 5 mm (gold), bind head (2)
v M2 × 5 mm (black), flat head (20)
v M2 × 10 mm (black), flat head (30)
v M2 × 12 mm (black), flat head (5)
v M2 × 14 mm (black), bind head (10)
v M2 × 14 mm (black), TR7 (5)
v M2 × 14.9 mm for drive bay (5)
v M2 × 19 mm (black), bind head (5)
v M2.5 × 3 mm (gold), flat head (5)
v M2.5 × 4.8 mm (black), bind head (10)
v M3 × 3 mm (PHILLIPS/slotted) (2)
v Hex stud (5)
v Security screw (1)
v Screw caps (square, thin)
v Screw caps (oval, not painted)
v Screw caps (not painted)
v Screw caps (square)
v Tape on Bluetooth wireless antenna

13R2916

N

Base miscellaneous parts (14.1-in. LCD
models):
v Cover, PC Card slot
v Spacer, PC Card slot
v Spring, PC Card slot cover
v Rubber foot (rear)
v Rubber foot (front)
v Insulation sheet
v Battery lock knob L
v Battery lock latch L
v Battery lock knob R
v Battery lock latch R
v Spring, battery lock
v Slide lever
v Slide lever spring
v Pull lever
v Pull lever spring
v Puller
v Rubber, shock absorber
v Insulation, bottom
v Foam under fan
v Cu tape under fan
v Cu tape
v Insulation, louver
v Screw caps (square, thin)

26R8406

N

(continued)

ThinkPad T43 Series

205

Parts list
FRU

P/N

CRU
ID

Base miscellaneous parts (15.0-in. LCD
models):
v Cover, PC Card slot
v Spring, PC Card slot cover
v Rubber foot (rear)
v Rubber foot (front)
v Battery lock knob L
v Battery lock latch L
v Battery lock knob R
v Link, battery lock
v Spring, battery lock
v Slide lever
v Slide lever spring
v Pull lever
v Pull lever spring
v Puller
v Rubber, shock absorber
v Insulation sheet
v Insulation, bottom
v Foam under fan
v Foam under system board, front
v Foam under system board, rear
v Cu plate, video
v Insulation, louver
v Screw caps (square, thin)

26R8407

N

System miscellaneous parts (14.1-in. LCD
models):
v Cable, RJ11-docking connector on system
board
v DC in cable
v (c) Hard disk drive guide rail
v Spacer for DSP connector
v (e) I/O plate bracket
v (f) Support structure
v Harness (left)
v (b) Antenna cable guide
v Bracket holder, LCD cable
v (d) EMI spring, CDC
v Connector bag
v Screw cap (square, thin)

26R8408

N

Note: Italicized letters in parentheses are
references to the exploded view on page 185.

(continued)

206

MT 1871/1872/1873/1874/1875/1876

Parts list
FRU

P/N

CRU
ID

System miscellaneous parts (15.0-in. LCD
models):
v Cable, RJ11-docking connector on system
board
v DC in cable
v (c) Hard disk drive guide rail
v Sheet for DSP connector
v (e) I/O plate bracket
v (f) Support structure
v Harness (left)
v (b) Antenna cable guide
v Bracket holder, LCD cable
v (d) EMI spring, CDC
v Connector bag

13R2915

N

26R8405

N

Note: Italicized letters in parentheses are
references to the exploded view on page 185.
System board miscellaneous parts:
v Insulator, PC Card slot
v Insulator, louver
v Insulator, docking latch
v Insulator, security chip
v Insulator, docking connector
v Insulator, fan
v Insulator, Mg
v S-video gasket
v Form on system board
v Insulator, louver, hard disk drive
v Mic rubber
v Stud, triangle
v Audio connector bracket
v Security chip spacer
v Stud, system board
v Screw cap (square, thin)

(continued)

ThinkPad T43 Series

207

Parts list
FRU

P/N

CRU
ID

LCD miscellaneous parts (14.1-in. LCD
models):
v Tape, LCD FPC
v Tape on Bluetooth wireless antenna
v (a) LCD latch R
v (b) LCD latch L assembly
v (c) Cable bushing (lower)
v (d) Cable bushing (upper)
v LED lens
v Cable clip
v Spiral tube
v Screw caps (square, thin)
v Screw caps (oval, not painted)
v Screw caps (not painted)
v Screw caps (square)

13R2449

N

P/N

CRU
ID

Note: Italicized letters in parentheses are
references to the exploded view on page 194.

AC adapters
FRU

3-pin (72W) slim adapter for PFC model (models CTO, xxA, xxB,
xxC, xxG, xxH, xxK, xxM, xxQ, xxV)
ASTEC OP

DELTA OP

SANKEN OP

92P1015

*

08K8203

*

92P1019

*

08K8207

*

92P1023

*

08K8211

*

2-pin (72W) slim adapter for non-PFC model (models CTO, xxE,
xxF, xxJ, xxL, xxP, xxS, xxU, xxY)
ASTEC OP

DELTA OP

SANKEN OP

208

92P1017

*

08K8205

*

92P1021

*

08K8209

*

92P1025

*

08K8213

*

MT 1871/1872/1873/1874/1875/1876

Parts list

Optional FRUs
FRU

P/N

CRU
ID

Hard disk drive, 80 GB, 9.5 mm, 4200 rpm,
IBM STD

08K9863

*

Ultrabay Slim hard disk drive adapter

62P4553

*

Ultrabay Slim Li Polymer battery (2nd bay
battery), Sanyo (WW)

08K8191

*

ThinkPad Dock II

67P9010

*

Top cover and screw kit for ThinkPad Dock II

46P3085

**

PCI cover for ThinkPad Dock II

46P3086

*

ThinkPad Mini Dock

67P9011

*

AC adapter (2 pin, 120 W), DELTA for
ThinkPad Mini Dock

02K7086

*

AC adapter (2 pin, 120 W), LITEON for
ThinkPad Mini Dock

02K7092

*

AC adapter (3 pin, 120 W), LITEON for
ThinkPad Mini Dock

02K7094

*

AC adapter (3 pin, 120 W), LITEON for
ThinkPad Mini Dock

02K7096

*

ThinkPad Port Replicator II

74P6735

*

ThinkPad Slim Drive Adapter for Ultrabay
2000

62P4556

*

Multiple battery charger

02K6642

*

Diskette drive cable

27L0525

*

Diskette drive (TEAC)

08K9606

*

Diskette drive (Sony)

08K9607

*

ThinkPad T43 Series

209

Parts list

Common parts list
Tools
Tool

P/N

Triconnector wrap plug

72X8546

PC test card

35G4703

Audio wrap cable

66G5180

USB parallel test cable

05K2580

Screwdriver kit

95F3598

Mini PC tool set

00P7033

1/4" drive spinner handle

1650840

1/4" Sq. to 1/4" hex torx adapter

93F2838

TR7-TR-10 tamper resistant torx bits

00P6967

Removal tool antenna RF connector

08K7159

PCI-Express/USB wrap card

27K9813

USB floppy disk drive for maintenance diskette

05K9283

ThinkPad Hardware Maintenance Diskette Version
1.73 or later
Note: Download the file from the following Web site:
http://www.lenovo.com/think/spm

—

210

MT 1871/1872/1873/1874/1875/1876

Parts list

Power cords (system)
An IBM power cord for a specific country or region is
usually available only in that country or region:
For 2-pin power cords:
Region

P/N

CRU
ID

Canada, U.S.
v models -CTO, xxF, xxL, xxS, xxU

13H5264 *

Japan
v models -Exx, Jxx

74P4331

Argentina
v models -CTO, xxY

36L8870

Brazil
v models -CTO, xxP

49P2095

For 3-pin power cords:
Region

P/N

Australia, New Zealand
v models -CTO, xxG, xxM

76H3514 *

Taiwan, Thailand
v models -CTO, xxV

76H3516

Italy
v models -CTO, xxG

76H3530

Denmark
v models -CTO, xxG

76H3520

U.K., China (Hong Kong S.A.R.)
v models -CTO, xxB, xxG, xxH

76H3524

European countries
v models -CTO, xxG

76H3518

India, South Africa
v models -CTO, xxG

76H3522

Israel
v models -CTO, xxG

76H3532

Korea
v models -xxK

76H3535

China (P.R.C.) (other than Hong Kong S.A.R.)
v models -xxC

02K0539

Switzerland
v models -CTO, xxG

76H3528

ThinkPad T43 Series

CRU
ID

211

Parts list

Power cords (ThinkPad Dock II)
A ThinkPad power cord for a specific country or region is
usually available only in that country or region:
For 3-pin power cords:
Region

P/N

CRU
ID

Argentina

36L8868

*

Australia, New Zealand

75H8988

Brazil

49P2101

Canada, Thailand, U.S.

75H8989

Denmark

75H8992

European countries

75H8990

India, South Africa

75H8993

Israel

75H8999

Italy

75H8998

Japan

75H8996

Korea

76H3536

China (P.R.C.) (other than Hong Kong S.A.R)

02K0540

Switzerland

75H8997

U.K.

75H8994

212

MT 1871/1872/1873/1874/1875/1876

Notices

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.
500 Park Offices Drive, Hwy. 54
Research Triangle Park, NC 27709
U.S.A.
Attention: Lenovo Director of Licensing
LENOVO GROUP LTD. 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
ThinkPad T43 Series

213

Notices

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.

214

MT 1871/1872/1873/1874/1875/1876

Trademarks

Trademarks
The following terms are trademarks of Lenovo in the
United States, other countries or both:
Lenovo
Rescue and Recovery
ThinkLight
ThinkPad
ThinkPad Dock II
ThinkPad Mini Dock
ThinkPad Port Replicator
ThinkPad Port Replicator II
TrackPoint
Ultrabay
Ultrabay 2000
Ultrabay Plus
UltraNav
The following terms are trademarks of the International
Business Machines Corporation in the United States, other
countries, or both:
IBM (used under license)
OS/2
Microsoft, Windows, and Windows NT are trademarks of
Microsoft Corporation in the United States, other countries,
or both.
Intel and Pentium are trademarks or registered trademarks
of Intel Corporation or its subsidiaries in the United States
and other countries.
Other company, product, or service names may be the
trademarks or service marks of others.

ThinkPad T43 Series

215

Part Number: 39T6193

(1P) P/N: 39T6193



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