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ThinkPad Computer

Hardware Maintenance Manual

April 2008

This manual supports:

ThinkPad R50e Series

ThinkPad Dock II (MT 2877)

(MT 1834, 1842, 2670)

ThinkPad R52 Series

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

1858, 1859, 1860, 1861, 1862,

1863, 1870)

ThinkPad R51e Series

(MT 1843, 1844, 1845)

Note

Before using this information and the product it

supports, be sure to read the general information

under “Notices” on page 263.

Second Edition (April 2008)

Portions © Copyright International Business Machines

Corporation 2005, 2008.

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

Produktspecifikationer

Varumärke:	Ibm
Kategori:	Anteckningsbok
Modell:	thinkpad r52
Färg på produkten:	Zwart
Vikt:	900 g
Bredd:	254 mm
Djup:	221 mm
Höjd:	227 mm
Förpackningens vikt:	1000 g
Förpackningens bredd:	255 mm
Djuppackning:	193 mm
Förpackningshöjd:	75 mm
Snäll:	Passieve houder
Justerbar i höjdled:	Ja
Korrekt användning:	Bureau
Material:	Aluminium
Modell:	Horizontaal/Verticaal
Hopfällbar:	Ja
Pivothörn:	0 - 360 °
Rotationsvinkel:	360 °
Inbyggd laddare:	Nee
Tiltvinkelområde:	0 - 150 °
Maximal skärmstorlek:	7.5 "
Typ av mobil utrustning:	Camera, Mobile phone/Smartphone, Tablet/UMPC
Minsta skärmstorlek:	4.4 "
Armlängds avstånd:	152 mm