Ibm THINKPAD R50P, THINKPAD R50 User Manual

ThinkPad Computer
Hardware

August 2005

Maintenance Manual

This manual supports:

ThinkPad R50e Series

(MT 1834, 1842, 2670)

ThinkPad R51e Series

(MT 1843, 1844, 1845)

ThinkPad R52 Series

(MT 1846, 1847, 1848, 1849, 1850,

1858, 1859, 1860, 1861, 1862,
1863, 1870)

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 263.

First Edition (August 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 . . . . . . . . . . .1

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 . . . . . . . . . .29

Read this first . . . . . . . . . . . . .29

What to do first . . . . . . . . . . .29

Related service information . . . . . . . . .31

Service Web site . . . . . . . . . . .31

Restoring the pre-installed system . . . . . .31

Passwords . . . . . . . . . . . . .32

Power management . . . . . . . . . .35

Checkout guide . . . . . . . . . . . .38

Testing the computer . . . . . . . . . .38

Detecting system information with PC-Doctor . . .41

Power system checkout . . . . . . . . .41

ThinkPad R50e, R51e and R52 Series . . . . .45

Product overview . . . . . . . . . . . .47

Specifications . . . . . . . . . . . .47

Status indicators . . . . . . . . . . .54

FRU tests . . . . . . . . . . . . .57

Fn key combinations . . . . . . . . . .59

Symptom-to-FRU index . . . . . . . . . .62

Numeric error codes . . . . . . . . . .62

Error messages . . . . . . . . . . .67

Beep symptoms . . . . . . . . . . .68

No-beep symptoms . . . . . . . . . .68

LCD-related symptoms . . . . . . . . .69

Intermittent problems . . . . . . . . . .70

Undetermined problems . . . . . . . . .70

© Lenovo 2005. Portions © IBM Corp. 2005. iii

FRU replacement notices . . . . . . . . .71

Screw notices . . . . . . . . . . . .71

Retaining serial numbers . . . . . . . . .72

Removing and replacing a FRU . . . . . . . .75

1010 Battery pack . . . . . . . . . . .76

1020 Ultrabay Enhanced device (for R52 series) 77

1030 Hard disk drive . . . . . . . . . .79

1040 DIMM (optional) . . . . . . . . .81

1050 Keyboard . . . . . . . . . . .82

1060 Ultrabay device (for R50e series) . . . .86

1070 DIMM (standard) . . . . . . . . .87

1080 Modem daughter card (MDC-2) . . . . .88

1090 Bluetooth/Modem daughter card (BMDC-3)

(for R52 series) . . . . . . . . . .90

1100 Keyboard bezel . . . . . . . . . .92

1110 Touch pad and Fingerprint reader (for R52

series) . . . . . . . . . . . . .96

1120 Mini PCI adapter . . . . . . . . .99

1130 Fan assembly . . . . . . . . . . 103

1140 CPU . . . . . . . . . . . . . 104

1150 Backup battery . . . . . . . . . 105

1160 Speaker assembly . . . . . . . . 106

1170 IEEE 1394 (for R52 series) . . . . . . 108

1180 PC Card slot assembly . . . . . . . 111

1190 Ultrabay Enhanced shield kit . . . . .114

1200 LCD assembly . . . . . . . . . . 121

1210 VGA and Ultrabay Enhanced device eject

button cable . . . . . . . . . . . 125

1220 System board, interposer card, and base

cover . . . . . . . . . . . . . 128

2010 LCD front bezel . . . . . . . . . 135

2020 Inverter card . . . . . . . . . . 137

2030 LCD panel, LCD cable assembly, wireless

LAN antenna assembly, hinges, and LCD cover . 138

3010 ThinkPad Dock II PCI cover . . . . . . 149

3020 ThinkPad Dock II top cover . . . . . . 150

Locations . . . . . . . . . . . . . . 153

Front view (for R50e) . . . . . . . . . 153

Rear view (for R50e) . . . . . . . . . 154

Bottom view (for R50e) . . . . . . . . . 155

Front view (for R52) . . . . . . . . . . 156

Rear view (for R52) . . . . . . . . . . 158

Bottom view (for R52) . . . . . . . . . 159

Parts list . . . . . . . . . . . . . . 160

Overall . . . . . . . . . . . . . 160

LCD FRUs . . . . . . . . . . . . 220

AC adapters . . . . . . . . . . . . 240

Keyboard . . . . . . . . . . . . . 241

Recovery CDs . . . . . . . . . . . 243

Miscellaneous parts . . . . . . . . . . 253

Optional FRUs . . . . . . . . . . . 259

Common parts list . . . . . . . . . . 260

Notices . . . . . . . . . . . . . . 263

iv R50e, R51e and R52 Series

Trademarks . . . . . . . . . . . . . 265

Contents v

vi R50e, R51e and R52 Series

About this manual

This manual contains service and reference information for
ThinkPad

®

R50e series (MT 1834, 1842, 2670), R51e
series (MT 1843, 1844, 1845), R52 series (MT 1846, 1847,
1848, 1850, 1858, 1859, 1860, 1861, 1862, 1863, 1870),
and ThinkPad Dock II (MT2877) products. Use this manual
along with the advanced diagnostic tests to troubleshoot
problems.

Note

MT 1850, 1862, 1863, and 1870 are special bids.
For information on how to locate service parts, refer
to “Strategy for replacing FRUs for CTO, CMV, and
GAV” on page 4.

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 R50e, R51e and R52 Series

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 R50e, R51e and R52 Series

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)

is a standard model (fixed configuration). GAVs are

This
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 PART S

INFORMATION, then PA RT S LOOKUP. Type in the
model type and serial number. The key commodities will
be returned in the eSupport record under PA RTS
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 PA RTS
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 R50e, R51e and R52 Series

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

Current or
original part

Non-RoHS Can be

Replacement
FRU

Non-RoHS

Products marketed after June
2006

Current or
original part

Replacement
FRU

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

3.5-inch 1.0 MB Read and write

Diskette
capacity

Compatibility

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 R50e, R51e and R52 Series

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 R50e, R51e and R52 Series

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 R50e, R51e and R52 Series

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 R50e, R51e and R52 Series

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.

16 R50e, R51e and R52 Series

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.

18 R50e, R51e and R52 Series

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.

20 R50e, R51e and R52 Series

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

Before you start to work on the machine, unplug the

v

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

similar units. (This practice ensures correct

and
grounding of the units.)

v If an electrical accident occurs:

– Use caution; do not become a victim yourself.
– Switch off power.
– Send another person to get medical aid.

22 R50e, R51e and R52 Series

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

determine whether there are any potentially unsafe

To
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.

Remove the cover.

4.

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.

24 R50e, R51e and R52 Series

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.

26 R50e, R51e and R52 Series

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.

28 R50e, R51e and R52 Series

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. Date of service
__ 3. Date on which the machine failed
__ 4. Date of purchase
__ 5. Failure symptoms, error codes appearing on the

display, and beep symptoms

__ 6. Procedure index and page number in which the

failing FRU was detected
__ 7. Failing FRU name and part number
__ 8. Machine type, model number, and serial number
__ 9. Customer’s name and address

Note 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.

30 R50e, R51e and R52 Series

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 243

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. Yo u 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

There are two modes for the HDP: User only and

Note:

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

32 R50e, R51e and R52 Series

Related service information

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” on page 76.

3. Remove the backup battery.

For how to remove the backup battery, see “1150
Backup battery” on page 105.

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 the 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 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.

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.

34 R50e, R51e and R52 Series

Related service information

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

In R50e and R52 series, 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 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.

In R51e, press the Access IBM button and user the
ThinkVantage Productivity Center to turn off power to the
computer display.

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.

In R51e, you can also use the ThinkVantage Productivity
Center to put the computer in standby mode.

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:

General descriptions 35

Related service information

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.)

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:

The ring indicator (RI) is signaled by a serial device or a

v

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

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.

If the computer enters the hibernation mode while it

Note:

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.

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 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.

36 R50e, R51e and R52 Series

Related service information

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.

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.

In R51e, you can also use the ThinkVantage Productivity
Center to put the computer in hibernation mode.

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 the “Create Diagnostic Diskette” .

38 R50e, R51e and R52 Series

Checkout guide

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. Yo u 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.

As soon as all the diskettes have been created, the

5.
ThinkPad computer reboots. Yo u then receive a
message asking you to remove the last diskette from
the drive or, if you want to run the diagnostics, to insert
the first diskette.

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 41, and check the power
sources.

If an error code appears, go to “Symptom-to-FRU
index” on page 62.

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.)

PC-Doctor menu does not mean the formal

Note:

support device list. Some unsupported device
names may appear in the PC-Doctor menu.

General descriptions 39

Checkout guide

Diagnostics

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

Use thecursor keys andESC to movein menus. Press ENTERto select.

Interactive Tests Hardware Info Utility Quit F1=Help

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

The options on the test menu are as follows:

Diagnostics Interactive Tests

v Run Normal Test
v Run Quick Test
v CPU/Coprocessor
v Systemboard
v Video Adapter
v Serial Ports
v Parallel Ports
v Fixed Disks

v Keyboard
v Video
v Internal Speaker
v Mouse
v Diskette
v System Load
v CD-ROM/DVD Test

v Intel Wireless Radio
v Diskette Drives
v Other Devices
v ThinkPad Devices
v Communication
v Wireless LAN
v Memory Test – Full
v Memory Test – Quick

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.

To cancel the test, press Esc.

After running PC-Doctor, check the time and date

Note:

on the system and reset them if they are incorrect.

40 R50e, R51e and R52 Series

Checkout guide

Detecting system information with PC-Doctor

PC-Doctor can detect the following system information:

Hardware Info

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

Utility

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

Power system checkout

To verify a symptom, do the following:

1. Turn off the computer.

2. Remove the battery pack.

3. Connect the ac adapter.

4. 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” on page 42
v “Checking operational charging” on page 42
v “Checking the battery pack” on page 42
v “Checking the backup battery” on page 43

General descriptions 41

Checkout guide

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:

Pin Voltage (V dc)

2

1

(16-10V)

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.

1 +15.5 to +17.0

2 Ground

Noise from the ac adapter does not always indicate

Note:

a defect.

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;

42 R50e, R51e and R52 Series

Checkout guide

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. Turn off the computer.

2. Remove the battery pack and measure the voltage
between battery terminals 1 (+) and 5 (−). See the
following figure:

Terminal Voltage (V dc)

1(+)

2

3

4

5(-)

1 + 0 to + 12.6

5 Ground (−)

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

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. Turn 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” on
page 76).

General descriptions 43

Checkout guide

4. Remove the backup battery (see “Checking the battery
pack” on page 42).

5. Measure the voltage of the backup battery. See the
following figure.

Red (+)

Wire Voltage (V dc)

Red +2.5 to +3.2

Black (-)

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.

44 R50e, R51e and R52 Series

ThinkPad R50e, R51e and R52 Series

Product overview . . . . . . . . . . . .47

Specifications . . . . . . . . . . . .47

Status indicators . . . . . . . . . . .54

FRU tests . . . . . . . . . . . . .57

Fn key combinations . . . . . . . . . .59

Symptom-to-FRU index . . . . . . . . . .62

Numeric error codes . . . . . . . . . .62

Error messages . . . . . . . . . . .67

Beep symptoms . . . . . . . . . . .68

No-beep symptoms . . . . . . . . . .68

LCD-related symptoms . . . . . . . . .69

Intermittent problems . . . . . . . . . .70

Undetermined problems . . . . . . . . .70

FRU replacement notices . . . . . . . . .71

Screw notices . . . . . . . . . . . .71

Retaining serial numbers . . . . . . . . .72

Restoring the serial number of the system unit 72

Retaining the UUID . . . . . . . . .73

Reading or writing the ECA information . . .73

Removing and replacing a FRU . . . . . . . .75

1010 Battery pack . . . . . . . . . . .76

1020 Ultrabay Enhanced device (for R52 series) 77

1030 Hard disk drive . . . . . . . . . .79

1040 DIMM (optional) . . . . . . . . .81

1050 Keyboard . . . . . . . . . . .82

1060 Ultrabay device (for R50e series) . . . .86

1070 DIMM (standard) . . . . . . . . .87

1080 Modem daughter card (MDC-2) . . . . .88

1090 Bluetooth/Modem daughter card (BMDC-3)

(for R52 series) . . . . . . . . . .90

1100 Keyboard bezel . . . . . . . . . .92

1110 Touch pad and Fingerprint reader (for R52

series) . . . . . . . . . . . . .96

1120 Mini PCI adapter . . . . . . . . .99

1130 Fan assembly . . . . . . . . . . 103

1140 CPU . . . . . . . . . . . . . 104

1150 Backup battery . . . . . . . . . 105

1160 Speaker assembly . . . . . . . . 106

1170 IEEE 1394 (for R52 series) . . . . . . 108

1180 PC Card slot assembly . . . . . . . 111

1190 Ultrabay Enhanced shield kit . . . . .114

1200 LCD assembly . . . . . . . . . . 121

1210 VGA and Ultrabay Enhanced device eject

button cable . . . . . . . . . . . 125

1220 System board, interposer card, and base

cover . . . . . . . . . . . . . 128

2010 LCD front bezel . . . . . . . . . 135

2020 Inverter card . . . . . . . . . . 137

© Lenovo 2005. Portions © IBM Corp. 2005. 45

2030 LCD panel, LCD cable assembly, wireless

LAN antenna assembly, hinges, and LCD cover . 138

3010 ThinkPad Dock II PCI cover . . . . . . 149

3020 ThinkPad Dock II top cover . . . . . . 150

Locations . . . . . . . . . . . . . . 153

Front view (for R50e) . . . . . . . . . 153

Rear view (for R50e) . . . . . . . . . 154

Bottom view (for R50e) . . . . . . . . . 155

Front view (for R52) . . . . . . . . . . 156

Rear view (for R52) . . . . . . . . . . 158

Bottom view (for R52) . . . . . . . . . 159

Parts list . . . . . . . . . . . . . . 160

Overall . . . . . . . . . . . . . 160

LCD FRUs . . . . . . . . . . . . 220

14.1-in. XGA TFT . . . . . . . . . 221

15.0-in. XGA TFT . . . . . . . . . 229

15.0-in. SXGA+ TFT . . . . . . . . 236

AC adapters . . . . . . . . . . . . 240

Keyboard . . . . . . . . . . . . . 241

Recovery CDs . . . . . . . . . . . 243

For Windows XP Professional (R50e series) 243
For Windows XP Home Edition (R50e series) 244
For Windows XP Professional (R51e series) 245
For Windows XP Home Edition (R51e series) 246
For Windows XP Professional (R52 series) 247

For Windows XP Home Edition (R52 series) 251

Miscellaneous parts . . . . . . . . . . 253

Optional FRUs . . . . . . . . . . . 259

Common parts list . . . . . . . . . . 260

Tools . . . . . . . . . . . . . 260

Power cords (system) . . . . . . . . 260

Power cords (ThinkPad Dock II) . . . . . 262

Notices . . . . . . . . . . . . . . 263

Trademarks . . . . . . . . . . . . . 265

46 R50e, R51e and R52 Series

Product overview

Product overview

This section presents the following product-unique
information:

v “Specifications”
v “Status indicators” on page 54
v “FRU tests” on page 57
v “Fn key combinations” on page 59

Specifications

The following table lists the specifications of the ThinkPad
R50e, R51e and R52 series:

Feature Description

Processor R50e series:

®

®

Celeron

M processor 350 (1.3

v Intel

GHz), L2 1-MB cache

v Intel Celeron M processor 360 (1.4

GHz), L2 1-MB cache

v Intel Celeron M processor 370 (1.5

GHz), L2 1-MB cache

v Intel Pentium

®

M processor 725 (1.6

GHz), L2 1-MB cache

v Intel Pentium M processor 735 (1.7

GHz), L2 1-MB cache

v Intel Pentium M processor 745 (1.8

GHz), L2 1-MB cache

v Intel Pentium M processor 755 (2.0

GHz), L2 1-MB cache

(continued)

R51e

series:

v Intel Celeron M processor 360 (1.4

GHz), L2 1-MB cache

v Intel Celeron M processor 370 (1.5

GHz), L2 1-MB cache

v Intel Celeron M processor 380 (1.6

GHz), L2 1-MB cache

v Intel Pentium M processor 740 (1.73

GHz), L2 2-MB cache

v Intel Pentium M processor 750 (1.86

GHz), L2 2-MB cache

v Intel Pentium M processor 760 (2.0

GHz), L2 2-MB cache

v Intel Pentium M processor 770 (2.1

GHz), L2 2-MB cache

(continued)

ThinkPad R50e, R51e and R52 Series 47

Product overview

Feature Description
Processor R52 series:

v Intel Celeron M processor 350 (1.3

GHz), L2 1-MB cache

v Intel Celeron M processor 360 (1.4

GHz), L2 1-MB cache

v Intel Celeron M processor 370 (1.5

GHz), L2 1-MB cache

v Intel Celeron M processor 380 (1.6

GHz), L2 1-MB cache

v Intel Pentium M processor 730 (1.6

GHz), L2 2-MB cache

v Intel Pentium M processor 740 (1.73

GHz), L2 2-MB cache

v Intel Pentium M processor 750 (1.86

GHz), L2 2-MB cache

v Intel Pentium M processor 760 (2.0

GHz), L2 2-MB cache

v Intel Pentium M processor 770 (2.1

GHz), L2 2-MB cache

v Intel Pentium M processor 780 (2.26

GHz), L2 2-MB cache

Standard memory R50e series:

v 256 MB DDR SDRAM SO-DIMM

(PC2700) card × 1

v 512 MB DDR SDRAM SO-DIMM

(PC2700) card × 1

v 1 GB DDR SDRAM SO-DIMM (PC2700)

card × 1

R51e

series:

v 256 MB DDR SDRAM SO-DIMM

(PC2-4200) card × 1

v 512 MB DDR SDRAM SO-DIMM

(PC2-4200) card × 1

R52

series:

v 256 MB DDR SDRAM SO-DIMM

(PC2-4200) card × 1

v 512 MB DDR SDRAM SO-DIMM

(PC2-4200) card × 1

v 1 GB DDR SDRAM SO-DIMM

(PC2-4200) card × 1

(continued)

48 R50e, R51e and R52 Series

Product overview

Feature Description

Optional memory v 256 MB DDR SDRAM SO-DIMM

(PC2700) card

v 512 MB DDR SDRAM SO-DIMM

(PC2700) card

v 1 GB DDR SDRAM SO-DIMM (PC2700)

card

v 256 MB DDR SDRAM SO-DIMM

(PC2-4200) card

v 512 MB DDR SDRAM SO-DIMM

(PC2-4200) card

v 1 GB DDR SDRAM SO-DIMM

(PC2-4200) card
(maximum of 2048 MB)

Bus architecture v 400 MHz PSB (Processor System Bus)

v 533 MHz PSB
v 333 MHz DDR (Double Data Rate)

SDRAM (Synchronous DRAM) (PC2700)

v 533 MHz DDR-2 (Double Data Rate 2)

SDRAM (Synchronous DRAM)
(PC2-4200)

v HUB link
v PCI bus
v LPC bus

Graphic memory
chip

R50e series:

v Intel 855GM

R51e

series:

v RC410M

R52

series:

v Intel 910GML
v Intel 915GM
v 32 MB DDR SDRAM (ATI M22-32)
v 32 MB DDR SDRAM (ATI M22-64)
v 64 MB DDR SDRAM (ATI M22-64)

CMOS RAM v 242 bytes

(continued)

ThinkPad R50e, R51e and R52 Series 49

Product overview

Feature Description
I/O port R50e and R51e series:

v External monitor connector
v Stereo headphone jack
v Monaural microphone jack
v Parallel connector
v RJ11 connector
v RJ45 connector
v Universal serial bus (USB) 2.0 connector

× 2 (compatible with USB 1.1 and 2.0)

R52

series:

v External monitor connector
v Stereo headphone jack
v Monaural microphone jack
v Infrared port
v Parallel connector
v Docking connector
v RJ11 connector
v RJ45 connector
v TV-out connector (S-Video)
v Universal serial bus (USB) 2.0 connector

× 2 (compatible with USB 1.1 and 2.0)

v IEEE 1394 connector (some models)
v Fingerprint reader (some models)

Internal modem v 56.6 Kbps
Audio R50e and R51e series:

v 1 W built-in monaural speaker×1
v Software control volume

R52

series:

v 1 W built-in stereo speaker × 2
v Software control volume

Infrared transfer (for
R52 series)

Display R50e and R51e series:

v IrDA 1.1

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

R52

series:

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) TFT color LCD

(continued)

50 R50e, R51e and R52 Series

Product overview

Feature Description

Ultrabay Enhanced
device

R50e series:

v CD-ROM drive, 12.7 mm high
v DVD drive, 12.7 mm high
v DVD/CD-RW combo drive, 12.7 mm

high

v DVD-RAM/RW drive, 12.7 mm high

(option)

R51e

series:

v CD-ROM drive, 12.7 mm high
v DVD drive, 12.7 mm high
v DVD/CD-RW combo drive, 12.7 mm

high

v DVD-RAM/RW drive, 12.7 mm high

R52

series:

v CD-ROM drive, 12.7 mm high
v DVD drive, 12.7 mm high
v DVD/CD-RW combo drive, 12.7 mm

high

v DVD-RAM/RW drive, 12.7mm high
v DVD drive, 9.5 mm high (supported by

CTO)

v DVD/CD-RW combo drive, 9.5 mm high

(supported by CTO)

v DVD-RAM/RW drive, 9.5 mm high

(supported by CTO)

Touch pad (for R52
series)

v UltraNav

ThinkLight Yes

Hard disk drive v 30.0 GB, 4200 rpm, 9.5 mm high, IDE

interface

v 40.0 GB, 4200 rpm, 9.5 mm high, IDE

interface

v 40.0 GB, 5400 rpm, 9.5 mm high, IDE

interface

v 60.0 GB, 4200 rpm, 9.5 mm high, IDE

interface

v 60.0 GB, 5400 rpm, 9.5 mm high, IDE

interface

v 80.0 GB, 4200 rpm, 9.5 mm high, IDE

interface

v 80.0 GB, 5400 rpm, 9.5 mm high, IDE

interface

v 80.0 GB, 7200 rpm, 9.5 mm high, IDE

interface

v 100.0 GB, 5400 rpm, 9.5 mm high, IDE

interface

(continued)

Supported

hard disk drives are depend on

the model.

ThinkPad R50e, R51e and R52 Series 51

Product overview

Feature Description

Integrated wireless
LAN feature

R50e series:

v 802.11b
v 802.11b/g

R51e

series:

v 802.11b/g
v 802.11a/b/g

R52

series:

v 802.11b
v 802.11b/g
v 802.11a/b/g and Bluetooth wireless

Mini PCI adapter R50e series:

v Intel PRO/Wireless LAN 2100 3B Mini

PCI Adapter (802.11b)

v Intel PRO Wireless 2200BG Mini-PCI

Adapter

R51e

series:

v ThinkPad 11b/g Wireless LAN Mini PCI

Adapter

v ThinkPad 11a/b/g Wireless LAN Mini

PCI Adapter II

R52

series:

v Intel PRO/Wireless LAN 2100 3B Mini

PCI Adapter (802.11b)

v Intel PRO Wireless 2200BG Mini-PCI

Adapter

v ThinkPad 11b/g Wireless LAN Mini PCI

Adapter

v ThinkPad 11a/b/g Wireless LAN Mini

PCI Adapter II

v Intel PRO Wireless 2915ABG Mini-PCI

Adapter

PC
Card/ExpressCard

v One Type-III
v One Type-II

v One Type-II
v One ExpressCard

Ethernet (on the
system board)

R50e and R51e series:

v 10/100Base Ethernet

R52

series:

v Gigabit Ethernet

(continued)

52 R50e, R51e and R52 Series

Feature Description

Communication
daughter card
(CDC)

R50e and R51e series:

v ThinkPad Integrated 56K Modem

(MDC-2)

R52

series:

v ThinkPad Integrated 56K Modem

(MDC-2)

v ThinkPad Integrated Bluetooth IV with

56K Modem (BMDC-3)

Battery v Li-ion battery (6 cells)

v Li-ion battery (9 cells)
v Ultrabay Enhanced Li Polymer battery, 3

cells (option)

AC adapter v 72-watt type

Preinstalled
operating system

v Windows XP Professional
v Windows XP Home Edition

Product overview

ThinkPad R50e, R51e and R52 Series 53

Product overview

Status indicators

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

1 2 3 4 5 6 7 8

R

9

2 7 8

R

Note: Some models may not have the status indicators

shown above.

54 R50e, R51e and R52 Series

Product overview

Note: Some models may not have the status indicators

described below.

Indicator Meaning

1 Wireless

status

2 Bluetooth

wireless
status

3 Num lock

5 Caps lock

5 Drive in

use

R

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.

Green:

Bluetooth wireless feature is operational.

This indicator is on when Bluetooth
wireless feature is on and not in suspend
mode.

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.

Green:

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

Green:

Data is being read from or written to the
hard disk drive, the diskette drive, or the
drive in the Ultrabay Enhanced device.
When this indicator is on, do not put the
computer into standby mode or turn off the
computer.

6 Power-on

(continued)

Note:

Do not move the system while the

green drive-in-use light is on. Sudden physical
shock could cause drive errors.

Green:

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

ThinkPad R50e, R51e and R52 Series 55

Product overview

Indicator Meaning

7 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.

8 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.

9 Ultrabay

Enhanced
status

Green:

An Ultrabay Enhanced device is installed
and in use.

Blinking green:

An Ultrabay Enhanced device is in the
process of being detached.

Turn off:

An Ultrabay Enhanced device is ready to
be attached or detached.

56 R50e, R51e and R52 Series

Product overview

FRU tests

The following table shows the test for each FRU.

FRU Applicable test

System board 1. Diagnostics --> CPU/Coprocessor

Power Diagnostics --> ThinkPad Devices --> AC

LCD unit

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

Audio 1. Interactive Tests --> Internal Speaker

Speaker Interactive Tests --> Internal Speaker
PC Card slots 1. Diagnostics --> Systemboard --> PCMCIA

ExpressCard
slot

Keyboard 1. Diagnostics --> Systemboard -->

Hard disk drive Diagnostics --> Fixed Disks

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.

Adapter, Battery 1 (Battery 2)

1. Diagnostics --> Video Adapter

2. Interactive Tests --> Video

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

2. Diagnostics --> Other Devices --> Analog

Devices AC97 CODEC Test

2. Insert a PC Card Wrap Plug into every PC
Card slot, and run Diagnostics -->

Systemboard --> PCMCIA External Loop

1. Insert a PCI-Express/USB Wrap card into
the ExpressCard slot.

2. Turn on the computer.

3. Run Diagnostics --> ThinkPad Devices

--> Express Card Slot.

Keyboard

2. Interactive Tests --> Keyboard

(continued)

ThinkPad R50e, R51e and R52 Series 57

Product overview

FRU Applicable test

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

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

Touch Pad If the Touch Pad does not work, check the

If the TrackPoint does not work, check the
configuration as specified in the ThinkPad
Configuration program. If the TrackPoint is
disabled, select Automatic (or Enable) 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

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

58 R50e, R51e and R52 Series

Product overview

Fn key combinations

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

Key
combination

Fn+F1 Reserved.

Fn+F2 Reserved.
Fn+F3 R50e and R52 series:Turn off the computer

Fn+F4 Put the computer in standby mode. To return to

Fn+F5 Control the power source of the built-in

Fn+F6 Reserved.

Description

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

R51e series:Select a power scheme that has
been created by Power Manager. A panel for
selecting a power scheme appears when this
combination is pressed.

Notes:

1. If the user has logged on with a
administrator user ID, and Fn+F3 is
pressed, the panel for selecting a power
scheme appears. If the user have logged
on with another user ID, and Fn+F3 is
pressed, the panel does not appear.

2. The computer display cannot be turned off
by pressing Fn+F3.

normal operation, press the Fn key only,
without pressing a function key.

Note: 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.

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

(continued)

ThinkPad R50e, R51e and R52 Series 59

Product overview

Key
combination

Fn+F7 Switch a display output location

Description

v External monitor (CRT display)
v Computer display and external monitor (LCD

+ CRT display)

v Computer display (LCD)

For any operating system other than

Note:

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 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)

60 R50e, R51e and R52 Series

Product overview

Key
combination

Fn+F9 Open the ThinkPad EasyEject Utility screen.

Description

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: Contigures 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. Yo u cannot use it
to detach the computer from the ThinkPad Mini
Dock or the ThinkPad Port Replicator II.

Fn+F10 Reserved.

Fn+F11 Reserved.

Fn+F12 Put the computer into hibernation mode. To

Fn+PgUp Turn the ThinkLight on or off.

return to normal operation, press the power
button for less than four seconds.

Note: To use Fn+F12 for hibernation, you must

have the PM device driver installed on the
computer.

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 R50e, R51e and R52 Series 61

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 70.

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

CRC1, stop POST

Bad
task—The EEPROM checksum
is not correct.

0176

Security—The system

System
has been tampered with.

0177

SVP data, stop POST

Bad
task—The checksum of the
supervisor password in the
EEPROM is not correct.

0182

CRC2. Enter BIOS Setup

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

62 R50e, R51e and R52 Series

System board.

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

2. System board.

System board.

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.

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.

0188

Invalid

RFID Serialization

Information Area.

0189

Invalid

RFID configuration

information area—The
EEPROM checksum is not
correct.

0190

Critical

low-battery error

0191

System

Security—Invalid

Remote Change requested.

System board.

System board.

System board.

1. Charge the battery pack.

2. Battery pack.

1. Run BIOS Setup Utility,

and then save current
setting by pressing F10.

2. System board.

0192

Security— IBM

System
Embedded Security hardware
tamper detected.

0199

Security—IBM Security

System
password retry count exceeded.

System board.

1. Run BIOS Setup Utility,
and then save the current
setting by pressing F10.

2. System board.

01C8

or more modem devices

Two
are found. Remove all but one
of them. Press <Esc> 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

than one Ethernet devices

More
are found. Remove one of
them. Press <Esc> to continue.

1. Remove the Ethernet

device that you installed;
or press Esc to ignore the
warning message.

2. System board.

0200

disk error—The hard disk

Hard
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 R50e, R51e and R52 Series 63

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.

0230

Shadow

RAM error—Shadow

RAM fails at offset nnnn.

0231

System

RAM error—System

RAM fails at offset nnnn.

0232

RAM error—

Extended
Extended RAM fails at offset
nnnn.

0250

battery error—System

System
battery is dead.

0251

CMOS checksum

System
bad— Default configuration
used.

0252

Password
password is cleared.

0260

System

checksum bad—The

timer error.

Load Setup Defaults in BIOS
Setup Utility.

System board.

1. DIMM.

2. System board.

1. DIMM.

2. System board.

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

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

Reset the password by
running BIOS Setup Utility.

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

and time error—Neither

Date
the date nor the time is set in
the computer.

0280

boot incomplete—

Previous
Default configuration used.

Run BIOS Setup Utility to
reset the time and date.

1. Load “Setup Default” in
BIOS Setup Utility.

2. DIMM.

3. System board.

02F4

DMA

test failed.

1. Load Setup Defaults in

BIOS Setup Utility.

2. Replace the backup battery.

3. System board.

02F5

test failed.

DMA

02F6

Software

02F7

Fail-safe

NMI failed

timer NMI failed

1. DIMM.

2. System board.

1. DIMM.

2. System board.

1. DIMM.

2. System board.

64 R50e, R51e and R52 Series

Symptom-to-FRU index

Symptom or error FRU or action, in sequence
1802

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

1803

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

1810

Hard

network card is

daughter card is

disk partition layout error.

1. Remove Mini PCI network

card.

2. System board.

1. Remove the daughter

card that you installed.

2. System board.

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.

ThinkPad R50e, R51e and R52 Series 65

Symptom-to-FRU index

Symptom or error FRU or action, in sequence
2000

Hard

Drive Active Protection

sensor diagnostics failed.
Press

<Esc> to continue.

Press

<F1> 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.

2010

Your internal hard disk

Warning:
drive (HDD) may not function
correctly on this system. Ensure
that your HDD is supported on
this system and that the latest
HDD firmware is installed.

Inform the following information
to the customer:
If

in the primary bay the

customer is using a non-IBM or
non-Lenovo hard disk drive
(HDD), or an old generation
IBM HDD which is not
supported by this system, with
the risk in mind, the customer
can still use it by pressing ESC.
If in the primary drive bay the
customer is using a supported
IBM/Lenovo HDD with an old
firmware, the customer needs
to update its firmware to the
latest. The latest version is
available at

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

66 R50e, R51e and R52 Series

Symptom-to-FRU index

Error messages

Symptom or error FRU or action, in sequence

Device address conflict. 1. Load “Setup Defaults” in

Allocation error for device. 1. Load “Setup Defaults” in

Failing bits: nnnn. 1. DIMM.

Invalid system configuration
data.

I/O device IRQ conflict. 1. Load “Setup Defaults” in

Operating system not found. 1. Check that the operating

Hibernation error. 1. Restore the system

Fan error. Fan.
Thermal sensing error. System board.

Authentication of system
services failed. Press <Esc> to
resume.

the BIOS Setup Utility.

2. Backup battery.

3. System board.

the BIOS Setup Utility.

2. Backup battery.

3. System board.

2. System board.

1. DIMM.

2. System board.

the BIOS Setup Utility.

2. Backup battery.

3. System board.

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.

configuration to what it
was before the computer
entered hibernation mode.

2. If memory size has been
changed, re-create the
hibernation file.

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

ThinkPad R50e, R51e and R52 Series 67

Symptom-to-FRU index

Beep symptoms

Symptom or error FRU or action, in sequence

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

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

Two short beeps with error
codes.

Two short beeps and a blank
screen.

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

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

Only the cursor appears. Reinstall the operating

Four cycles of four short beeps
and a blank screen.

Five short beeps and a blank
screen.

1. Reseat the LCD
connector.

2. LCD assembly.

3. External CRT.

4. System board.

1. System board.

2. LCD assembly.

3. DIMM.

POST error. See “Numeric
error codes” on page 62.

1. System board.

2. DIMM.

1. DIMM.

2. System board

system.
System board (security chip)

System board

No-beep symptoms

Symptom or error FRU or action, in sequence

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

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

The power-on password prompt
appears.

The hard-disk password prompt
appears.

The DOS full screen looks
smaller than it should.

68 R50e, R51e and R52 Series

1. Make sure that every
connector is connected
tightly and correctly.

2. DIMM.

3. System board.

1. Reseat DIMM.

2. System board.

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

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

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

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.

A bright dot means a pixel is always on

Note:

(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.

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

adjusted.

v LCD contrast cannot be

adjusted.

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

Horizontal or vertical lines
displayed on LCD.

System board.

1. Reseat the LCD
connectors.

2. LCD assembly.

3. System board.

1. See important note for

“LCD-related symptoms.”

2. Reseat all LCD connectors.

3. LCD assembly.

4. System board.

LCD assembly.

ThinkPad R50e, R51e and R52 Series 69

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 41.)

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

70 R50e, R51e and R52 Series

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.

the following when you service this machine:

Do

v Keep the screw kit (for the P/N, see “Miscellaneous

parts” on page 253) in your tool bag.

v Always use new screws.
v Use a torque screwdriver if you have one.

screws as follows:

Tighten

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.

ThinkPad R50e, R51e and R52 Series 71

FRU replacement notices

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 73
v “Reading or writing the ECA information” on page 73

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:

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.

72 R50e, R51e and R52 Series

FRU replacement notices

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.

ThinkPad R50e, R51e and R52 Series 73

FRU replacement notices

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.

74 R50e, R51e and R52 Series

Removing and replacing a FRU

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 71.

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 153.

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).

ThinkPad R50e, R51e and R52 Series 75

Removing and replacing a FRU

1010 Battery pack

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

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
the battery latch is locked.

76 R50e, R51e and R52 Series

Removing and replacing a FRU

1020 Ultrabay Enhanced device (for R52 series)

Note

Ultrabay Enhanced does not accept any of the
following devices:

v Ultrabay Plus devices
v Ultrabay 2000 devices

For devices compatible with the Ultrabay Enhanced,
see “Optional FRUs” on page 259.

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.

(continued)

1

2

ThinkPad R50e, R51e and R52 Series 77

Removing and replacing a FRU

3

78 R50e, R51e and R52 Series

Removing and replacing a FRU

1030 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” on page 76

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)

ThinkPad R50e, R51e and R52 Series 79

Removing and replacing a FRU

2

When installing: Make sure that the hard-disk connector

is attached firmly.

3

3

4

80 R50e, R51e and R52 Series

Removing and replacing a FRU

1040 DIMM (optional)

For access, remove this FRU:

v “1010 Battery pack” on page 76

Loosen the screw 1, but do not remove it.

Note:

1

2

3

2

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.

ThinkPad R50e, R51e and R52 Series 81

Removing and replacing a FRU

1050 Keyboard

For access, remove this FRU:

v “1010 Battery pack” on page 76

1a

Screw 1a is only for the models with 14.1-in. LCD.

Step Icon Screw (quantity) Color Torque

1

1a M2 × 12 mm, bind-head,

3

M2 × 12 mm, bind-head,
nylon-coated (3)

nylon-coated (1)

1

Black 0.245 Nm

Black 0.245 Nm

(2.5

(2.5

kgfcm)

kgfcm)

(continued)

82 R50e, R51e and R52 Series

Removing and replacing a FRU

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

4

3

When installing: Make sure that the connector 4 is

firmly attached.

ThinkPad R50e, R51e and R52 Series 83

Removing and replacing a FRU

When installing:

1. Attach the connector 1.

1

2. Install the keyboard so that the keyboard edges are
under the frame.

(continued)

84 R50e, R51e and R52 Series

2

Removing and replacing a FRU

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

3

3

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

b

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

b

ThinkPad R50e, R51e and R52 Series 85

Removing and replacing a FRU

1060 Ultrabay device (for R50e series)

For access, remove these FRUs in order:

v “1010 Battery pack” on page 76
v “1050 Keyboard” on page 82

Holding the switch in the direction of arrow 1, and push
the Ultrabay device out from the bay by using a
screwdriver 2 as in this figure. Then pull out the Ultrabay
device with your hand 3.

2

1

3

86 R50e, R51e and R52 Series

Removing and replacing a FRU

1070 DIMM (standard)

For access, remove these FRUs in order:

v “1010 Battery pack” on page 76
v “1050 Keyboard” on page 82

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.

ThinkPad R50e, R51e and R52 Series 87

Removing and replacing a FRU

1080 Modem daughter card (MDC-2)

For access, remove these FRUs in order:

v “1010 Battery pack” on page 76
v “1050 Keyboard” on page 82

1

2

1

Step Screw (quantity) Color Torque

1 M2 × 12 mm, bind-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)

88 R50e, R51e and R52 Series

Removing and replacing a FRU

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. Then place the
cable to fit in the cable guide as in the
figure.

ThinkPad R50e, R51e and R52 Series 89

Removing and replacing a FRU

1090 Bluetooth/Modem daughter card (BMDC-3) (for R52 series)

For access, remove these FRUs in order:

v “1010 Battery pack” on page 76
v “1050 Keyboard” on page 82

1

2

Step Screw (quantity) Color Torque

1 M2 × 12 mm, bind-head,

nylon-coated (2)

1

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)

90 R50e, R51e and R52 Series

Removing and replacing a FRU

Turn the card over 3, and detach the modem connector
4. If the Bluetooth wireless antenna jack has a tab

marked ″BT″, unplug the jack by pulling the tab with your
fingers. If the antenna jack does not have the tab, unplug
the jack by using the removal tool antenna RF connector
(P/N: 08K7159) or pick the connetor 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. Then
place the cable to fit in the cable guide
as in the figure.

ThinkPad R50e, R51e and R52 Series 91

Removing and replacing a FRU

1100 Keyboard bezel

For access, remove these FRUs in order:

v “1010 Battery pack” on page 76
v “1050 Keyboard” on page 82

2

2

2

2a

1

2

2

2

Screw 2a is only for the models with 15.0-in. LCD.

Step Icon Screw (quantity) Color Torque

1

2

2a M2 × 6 mm, bind-head,

M2 × 3 mm, small-head,

1

nylon-coated (3)

M2 × 6 mm, bind-head,

2

nylon-coated (4)

nylon-coated (1)

1

1

Silver 0.245 Nm

Black 0.245 Nm

Black 0.245 Nm

1

(2.5

kgfcm)

(2.5

kgfcm)

kgfcm)

(2.5

(continued)

92 R50e, R51e and R52 Series

Removing and replacing a FRU

5

4

3

4

3

5

3

4

4

3

3

Step Icon Screw (quantity) Color Torque

3

4

5

M2 × 12 mm, bind-head,

3

nylon-coated (3)

M2 × 12 mm, bind-head,

4

nylon-coated (2)

M2 × 18.9 mm, special

5

(1)

Silver 0.245 Nm

Silver 0.245 Nm

Silver 0.245 Nm

(2.5

(2.5

(2.5

kgfcm)

kgfcm)

kgfcm)

6

7

ThinkPad R50e, R51e and R52 Series 93

Removing and replacing a FRU

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)

2. Press the left edges 2 and the front edges 3 of the

keyboard bezel until the latches are snapped.

94 R50e, R51e and R52 Series