IBM ThinkPad R40 Owner's manual

IBM Mobile Systems
ThinkPad Computer
Hardware Maintenance Manual
March 2004
This manual supports: ThinkPad R40

Note
Before using this information and the product it
supports, be sure to read the general information
under “Notices” on page 178.
F irs t E d itio n (M arch 2004)
The fo llo w in g paragra ph does n o t a p p ly to th e United
K in gd o m o r a n y c o u n try w here such p ro v is io n s are
in c o n s is te n t w ith lo cal la w :
INTERNATIONAL BUSINESS MACHINES CORPORATION
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IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
LIMITED W ARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. Some states
do not allow disclaim er or express or implied warranties in
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apply to you.
This publication could include technical inaccuracies or
typographical errors. Changes are periodically made to the
information herein; these changes will be incorporated in
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improvements or changes to the products or the programs
described in this publication at any time.
It is possible that this publication may contain references
to, or information about, IBM products (machines and
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© C o p y rig h t In te rn a tio n a l Busin e ss M achines
C orp o ratio n 2004. A ll rig h ts rese rved.
US Governm ent Users Restricted Rights - Use, duplication
or disclosure restricted by G S A A D P Schedule Contract
with IBM Corp.

Contents
I n t r o d u c t i o n .............................................................................. 3
Important service in form atio n ..................................................... 3
Strategy for replacing F R U s ............................................... 3
How to use error m e s s a g e s ............................................... 4
Diskette com patibility m a tr ix ..................................................... 4
Safety notices: multilingual tra n sla tio n s .................................. 5
Safety inform ation.........................................................................17
General safe ty .........................................................................17
Electrical s a f e t y .................................................................. 18
Safety inspection g u i d e ...................................................... 19
Handling devices that are sensitive to electrostatic
d is c h a r g e ........................................................................ 20
Grounding re q uire m ents ..................................................... 21
Laser com pliance statem ent ..................................................... 22
General d e s c r i p t i o n s ............................................................ 25
Read this f ir s t .............................................................................. 25
W hat to do f i r s t .................................................................. 25
Related service in fo rm a tio n ..................................................... 28
Service web s i t e .................................................................. 28
Restoring the preloaded s y s t e m .................................. 28
P a ssw o rd s .............................................................................. 30
Power m a n a g e m e n t............................................................33
Checkout g u i d e ........................................................................ 36
Testing the c o m p u te r............................................................36
Detecting system information with PC-Doctor. . . 38
Power system c h e c k o u t ..................................................... 39
T h in kP a d R40 ............................................................................... 43
Product o v e rv ie w ........................................................................ 45
S p e c ific a tio n s ........................................................................ 45
Status in d ic a to rs .................................................................. 48
FRU t e s t s .............................................................................. 50
Fn key c o m b in a tio n s............................................................52
Symptom-to-FRU in d e x ............................................................53
Numeric error c o d e s ............................................................53
Error m e s s a g e s .................................................................. 56
Beep s y m p t o m s .................................................................. 57
No-beep s y m p to m s ............................................................57
LCD-related s y m p to m s ..................................................... 58
Intermittent p roblem s ............................................................59
Undetermined p ro b le m s ..................................................... 59
FRU replacement n o t i c e s ..................................................... 60
Screw n o tic e s ........................................................................ 60
Retaining serial num bers ..................................................... 61
Removing and replacing a F RU ............................................... 63
1010 Battery pack .................................................................. 64
1020 Ultrabay Plus d e v ic e ............................................... 65
A b o u t th is m a n u a l .................................................................. 1
© Copyright IBM Corp. 2004 i i i

1030 Hard-disk d riv e ............................................................66
1040 D I M M ........................................................................ 68
1050 Mini PCI a d a p t e r ..................................................... 70
1060 K e y b o a r d .................................................................. 73
1070 Backup b a tte ry ............................................................81
1080 Optical storage in the fixed b a y ............................ 82
1090 PC Card slot a s s e m b ly ......................................... 85
1100 Hinge c o v e r .................................................................. 87
1110 Communication daughter card (CDC) . . . 88
1120 Fan a s s e m b ly ............................................................94
1130 C P U .............................................................................. 95
1140 Bluetooth antenna a s s e m b ly .................................. 97
1150 LCD a s s e m b ly ............................................................98
1160 Keyboard b e z e l ..................................................... 103
1170 Speaker assembly and m icrophone cable 108
1180 System b o a rd ............................................................ 109
1190 Hard-disk drive s l o t ............................................... 116
2000 Ultrabay Plus guide r a i l ......................................... 117
2010 I/O Bracket .................................................................. 119
2020 LCD front b e z e l ..................................................... 120
2030 Inverter c a r d ............................................................ 121
2040 LCD panel and LCD cable assem bly . . .122
2050 Antenna assembly, hinges, and LCD cover 124
L o c atio n s ..................................................................................... 127
Front view for 2681, 2682, 2683, 2722, 2723, 2724 127
Rear view for 2681, 2682, 2683, 2722, 2723, 2724 129
Bottom view for 2681, 2682, 2683, 2722, 2723,
2724 130
Front view for 2684, 2685 ..................................... 131
Rear view for 2684, 2685 ..................................... 132
Bottom view for 2684, 2685 133
Parts l i s t ..................................................................................... 134
R40 series model m a t r i x ............................................... 134
O v e r a l l ............................................................................... 144
LCD F R U s ........................................................................ 161
K e y b o a rd ............................................................................... 165
Recovery C D s .................................................................. 166
Miscellaneous p a rts ............................................................ 169
AC a d a p te rs ........................................................................ 172
Telephone c a b le .................................................................. 173
Optional F R U s .................................................................. 174
Com mon parts l i s t ............................................................ 176
N o t i c e s ..................................................................................... 178
T r a d e m a rk s ........................................................................ 178
iv ThinkPad R40

About this manual
This manual contains service and reference information for
IBM ThinkPad R40 product. Use this manual along with
the advanced diagnostic tests to troubleshoot problems.
The manual is divided into sections as follows:
• The common sections provide general information,
guidelines, and safety information required in servicing
computers.
• The product-specific section includes service, reference,
and product-specific parts information.
Im p o rta n t
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 an IBM ThinkPad product, be sure
to review the safety information under “Safety
notices: multilingual translations” on page 5, “Safety
inform ation” on page 17, and “Laser compliance
statement” on page 22.
© Copyright IBM Corp. 2004 1

2 ThinkPad R40

Introduction
Important service information
Im p o rta n t
BIOS and device driver fixes are
customer-installable. The BIOS and device drivers
are posted on the IBM support site
http://www.ibm.com/pc/support
Advise customers to contact the PC Company
HelpCenter at 800-772-2227 if they need assistance
in obtaining or installing any diskette fixes.
Customers in Canada should call IBM HelpPC at
800-565-3344 for assistance or download
information.
Strategy for replacing FRUs
B e fore re p la cin g p a rts
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:
• If y o u are in s tru cte d to re p la ce a FRU b u t the
repla cem ent does n o t c o rre c t th e p ro b le m , reinsta ll
th e o rig in a l FRU b efo re y o u c o n tin u e .
• Some computers have both a processor board and a
system board. If you are instructed to replace either the
processor board or the system board, and replacing one
of them does not correct the problem, reinstall that
board, and then replace the other one.
• If an adapter or 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 sym ptoms change. Replace only
the FRU that changed the symptoms.
A tte n tio n : 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.
© Copyright IBM Corp. 2004 3

Important service information
Strategy for replacing a hard-disk drive
Always try to run a low-level form at before replacing a
hard-disk drive.
A tte n tio n : The drive startup sequence in the com puter
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. W hatever causes the
first error code m ay also cause false error codes. If no
error code is displayed, see if the error symptom is listed
in the Symptom-to-FRU Index for the computer you are
servicing.
Diskette compatibility matrix
The compatibility of each of the drives with the diskettes
for it is as follows:
Diskette
drive
Diskette
capacity
C om p atibility
3.5-inch 1.0 MB Read and write
2.0 MB Read and write
4.0 MB Not compatible
4 ThinkPad R40

Safety notices
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.
S a fe ty n o tice 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 apres remplacement
d'une unite en clientele, verifiez que tous les ressorts, vis et
autres pieces sont bien en place et bien fixees. Pour ce faire,
secouez l'unite et assurez-vous qu'aucun bruit suspect ne se
produit. Des pieces metalliques ou des copeaux de metal
pourraient causer un court-circuit.
Bevor nach einem FRU-Austausch der Computer wieder
angeschlossen wird, muB sichergestellt werden, daB keine
Schrauben, Federn oder andere Kleinteile fehlen oder im
Gehause vergessen wurden. Der Computer muB geschuttelt und
auf Klappergerausche gepruft werden. Metallteile oder-splitter
konnen Kurzschlusse erzeugen.
n t i* FRU na^nn nriNb iw nnn rtoan
o’ nsim onnN o>»p o ’ p^m ,0’2’ apn ,o 'm n tow
n t i * ’ td .iw non lir a o ” wain o j-w o m p m
.pwpw mbip a’w prfri awnnn un 'ydych w
.a«bown onsipb o n * o t t y ream m # in ’ pi>n
Prima di accendere l'elaboratore dopo che e 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
cio scuotendo l'elaboratore e prestando attenzione ad eventuali
rumori; eventuali parti o pezzetti metallici possono provocare
cortocircuiti pericolosi.
(continued)
Introduction 5

Safety notices
Antes de encender el sistema despues de sustituir una FRU,
compruebe que todos los tornillos, muelles y demas piezas
pequenas se encuentran en su sitio y no se encuentran sueltas
dentro del sistema. Compruebelo agitando el sistema y
escuchando los posibles ruidos que provocarian. Las piezas
metalicas pueden causar cortocircuitos electricos.
(continuation of safety notice 1)
6 ThinkPad R40

Safety notices
S a fe ty n o tice 2
A DANGER
Some standby batteries contain a sm all am ount of nickel and
cadm ium . Do not disassem ble a stan dby battery, recharge it,
thro w it into fire or water, o r sho rt-circuit it. Dispose of the
battery as required by local ordinances or regulations. Use
only the battery in the appropriate parts listing . Use o f an
incorrect battery can result in ignition o r explosion of the
battery.
Certaines batteries de secours contiennent du nickel et du
cadmium. Ne les demontez pas, ne les rechargez pas, ne les
exposez ni au feu ni a l'eau. Ne les mettez pas en
co urt-circu it. Pour les mettre au rebut, conform ez-vous a la
reglem entation en vigueur. Lorsque vous remplacez la pile de
sauvegarde ou celle de l'horloge tem ps reel, veillez a
n 'u tiliser que les modeles cites dans la liste de pieces
detachees adequate. Une batterie ou une pile inappropriee
risque de prendre feu ou d'exploser.
Die Bereitschaftsbatterie, die sich unter dem
Diskettenlaufwerk befindet, kann geringe Mengen Nickel und
Cadmium enthalten. Sie d a rf nur durch die Verkaufsstelle
oder den IBM Kundendienst ausgetauscht werden. Sie darf
nicht zerlegt, wiederaufgeladen, kurzgeschlossen, oder Feuer
oder W asser ausgesetzt werden. Die B atterie kann schwere
Verbrennungen oder Veratzungen verursachen. Bei der
Entsorgung die ortliche n B estimmungen fur Sonderm ull
beachten. Beim Ersetzen der Bereitschafts-oder
System batterie nu r Batterien des Typs verwenden, der in der
Ersatzteilliste aufgefu hrt ist. Der Einsatz falsch er Batterien
kann zu Entzundung oder E xplosion fuhren.
(continued)
Introduction 7

Safety notices
(continuation of safety notice 2)
fljup m»s «> *s» w a»w » ninan t t f f r t o
,m non tffrvo p io * v« .tnnaTpi bp’J
w w x i n n w 7*S\unS ,w rnn n n w iiiiob
ti^ w n un p it7i \u> .mux in jrt m o»»b
\u> .e»»ipm i o»pinni rnapnn *-r> ix w ttjs
w p in n t m w n ns»o)on fiS iw a p i vim w tib
bibn tin ’KJin x * nbbiw a w a> w .ti»»»«ittti
.nbbiflfi iw m e n u m ix fiJianS o n *
Alcune batterie di riserva contengono una piccola quantita di
nichel e cadm io. Non sm ontarle, ricaricarle, gettarle nel fuoco
o nell'acqua ne co rtocircuita rle. Smaltirle secondo la
norm ativa in vigore (DPR 915/82, successive dispo sizioni e
disposizioni locali). Quando si sostitu isce la batteria dell'RTC
(real tim e clock) o la batteria di supporto, utilizzare soltanto i
tip i inseriti nell'appropriato Catalogo parti. L'im pie go di una
batteria non adatta potrebbe determ inare l'in cen d io o
l'esplosio ne della batteria stessa.
Algunas baterfas de reserva contienen una pequena cantidad
de nfquel y cadmio. No las desmonte, ni recargue, ni las
eche al fuego o al agua ni las cortocircu ite . Desechelas tal
com o dispone la norm ativa local. Utilice solo baterfas que se
encuentren en la lista de piezas. La utilizacion de una baterfa
no apropiada puede provocar la ignicio n o explosion de la
misma.
8 ThinkPad R40

Safety notices
S a fe ty n o tice 3
A DANGER
The battery pack contains sm all am ounts of nickel. Do not
disassemble it, thro w it into fire or water, or sh o rt-c irc uit it.
Dispose of the battery pack as required by local ordinances
or regulations. Use on ly the battery in the appropriate parts
listing w hen replacing the battery pack. Use of an incorrect
battery can result in ignitio n or exp losion o f the battery.
La batterie contient du n ickel. Ne la dem ontez pas, ne
l'exposez ni au feu ni a l'eau. Ne la mettez pas en
co urt-circu it. Pour la mettre au rebut, conform ez-vous a la
reglem entation en vigueur. Lorsque vous remplacez la
batterie, veillez a n 'u tiliser que les modeles cites dans la liste
de pieces detachees adequate. En effet, une batterie
inappropriee risque de prendre feu ou d'exploser.
Akkus enthalten geringe Mengen von Nickel. Sie durfen nicht
zerlegt, wiederaufgeladen, kurzgeschlossen, oder Feuer oder
W asser ausgesetzt werden. Bei der Entsorgung die ortlichen
Bestim m ungen fur Sondermull beachten. Beim Ersetzen der
Batterie nur Batterien des Typs verwenden, der in der
Ersatzteilliste aufgefu hrt ist. Der Einsatz falsch er Batterien
kann zu Entzundung oder E xplosion fuhren.
i 'ro mop urns m o
,tiib w n m a jw p i a i i>n
un p M .urn ixpb in o»a!7 w wxb urn
m p t \n n * 'n «>rr» nV n vn nVrmr) m a
nWwa p i v a m n 1} v> .o » a ip a ji o»pinfii
noSnn iata na’xJian a>pinn ns»ai»n
'r t n na»NnB xb n V r w i .nVfm n m a
iw wssnanfi w fu w tii tm jb
La batteria contiene piccole quantita di nichel. Non
sm ontarla, gettarla nel fuoco o nell'acqua ne cortocircuita rla.
Smaltirla secondo la norm ativa in vigore (DPR 915/82,
successive dis po sizioni e disposizion i locali). Quando si
so stitu isce la batteria, utilizzare soltanto i tip i inseriti
nell'ap propriato Catalogo parti. L 'im p ieg o di una batteria non
adatta potrebbe determ inare l'in ce ndio o l'esplosione della
batteria stessa.
(continued)
Introduction 9

Safety notices
Las baterfas contienen pequenas cantidades de nfquel. No
las desm onte, ni recargue, ni las eche al fuego o al agua ni
las cortocircuite . Desechelas tal com o dispone la norm ativa
local. U tilice solo baterfas que se encuentren en la lista de
piezas al sustitu ir la baterfa. La u tilizacion de una baterfa no
apropiada puede provocar la ignicio n o explosion de la
misma.
(continuation of safety notice 3)
10 ThinkPad R40

Safety notices
S a fe ty n o tice 4
A DANGER
The lithiu m battery can cause a fire, an explosion, or a
severe burn. Do not recharge it, rem ove its polarized
connector, disassemble it, heat it above 100°C (212°F),
incinerate it, o r expose its cell contents to water. Dispose o f
the battery as required by local ordinances or regulations.
Use only the battery in the appropriate parts listing. Use o f
an incorrect battery can result in ignition o r explosion o f the
battery.
La pile de sauvegarde c on tient du lithium . Elle presente des
risques d'incendie, d'explosion ou de brulures graves. Ne la
rechargez pas, ne retirez pas son connecte ur polarise et ne
la dem ontez pas. Ne l'exposez pas a une temperature
superieure a 100°C, ne la faites pas bruler et n'en exposez
pas le contenu a l'eau. Mettez la pile au rebut conform ement
a la reglem entation en vigueur. Une pile inappropriee risque
de prendre feu ou d'exploser.
Die Systembatterie ist eine Lithiumbatterie. Sie kann sich
entzunden, explodieren oder schwere Verbrennungen
hervorrufen. Batterien dieses Typs durfen nicht aufgeladen,
zerlegt, uber 100 C erhitzt oder verbrannt werden. Auch darf
ihr Inhalt nicht mit Wasser in Verbindung gebracht oder der
zur richtig en Polung angebrachte Verbindungsstecker
entfernt werden. Bei der E ntsorgung die ortlichen
Bestim m ungen fur Sondermull beachten. Beim Ersetzen der
Batterie nur Batterien des Typs verwenden, der in der
Ersatzteilliste aufgefu hrt ist. Der Einsatz falsch er Batterien
kann zu Entzundung oder E xplosion fuhren.
(continued)
Introduction 11

Safety notices
(continuation of safety notice 4)
in m & tM itto ttvijfc tMw e iw M i r t fr w
ian»fi tm p i v i ,v m a turn imob i*k .n w p nw isi
fi w ia o ttS n s m oonS m n t m p ia i ,n!>w aoip»?i
VN1 jik 1»« .vw fe i m iva 100 in tiSwti
WTT33 n ^ w n n« p'n'? v»» .o>n!? snn p m jin <)ivmS
ti!>!m>a p i wnnwfii v .o»nipnfi o>pinai mspna
n M r o a Nuin’ w .o»n»«Ji»3ti o » p im ti n a ’ w i a n v ’ a ia si
.n is e n a n n w n a n w n a a o i o n * M v m n s <
La batteria di supporto e una batteria al litio e puo
incendiarsi, esplodere o procurare gravi ustioni. Evitare di
ricaricarla, sm ontarne il connettore polarizzato, sm ontarla,
riscaldarla ad una temperatura superiore ai 100 gradi
centigradi, incendiarla o gettarla in acqua. Smaltirla secondo
la norm ativa in vigore (DPR 915/82, successive dis po sizioni e
disposizioni locali). L'im piego di una batteria non adatta
potrebbe determ inare l'inc end io o l'esplosio ne della batteria
stessa.
La baterfa de repuesto es una baterfa de litio y puede
provocar incendios, explosiones o quem aduras graves. No la
recargue, ni quite el conector polarizado, ni la desmonte, ni
caliente por encima de los 100°C (212°F), ni la incine re ni
exponga el contenido de sus celdas al agua. Desechela tal
como dispone la norm ativa local.
12 ThinkPad R40

S a fe ty n o tice 5
Safety notices
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 a 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 medecin si des symptomes persistent apres le
lavage.
Die Leuchtstoffrohre im LCD-Bildschirm enthalt Quecksilber. Bei
der Entsorgung die ortlichen Bestimmungen fur Sondermull
beachten. Der LCD-Bildschirm besteht aus Glas und kann
zerbrechen, wenn er unsachgemaB behandelt wird oder der
Computer auf den Boden fallt. Wenn der Bildschirm beschadigt ist
und die darin befindliche Flussigkeit in Kontakt mit Haut und
Augen gerat, sollten die betroffenen Stellen mindestens 15
Minuten mit Wasser abgespult und bei Beschwerden
anschlieBend ein Arzt aufgesucht werden.
y jm N2 7onn iin o innm (LCD) ’ tnnn wa>n 700 om
■ jw m a-> m t> » d >v im d o n i w n u n ia o w ,o3 >t> i n om > j> o y
tw n u n ow &on on rraren m w rtnp'y 133 .m n * nip-r 15
.ns’ own inNb ookdm ^ w i on mnnn
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 areas
afectadas con agua durante 15 minutos como minimo. Obtenga
atencion medica si se presenta algun sintoma del fluido despues
de lavarse.
Introduction 13

Safety notices
S a fe ty n o tice 6
A DANGER
To avoid shock, do not remove the plastic cover that protects
the low er part o f the inverter card.
Afin d'e viter tout risque de choc electrique, ne retirez pas le
cache en plastique protegeant la partie inferieure de la carte
d'a lim e nta tio n.
Aus Sicherheitsgrunden die Kunststoffabdecku ng, die den
unteren Teil der S pannungswandlerplatine umgibt, nicht
entfernen.
p ’ o t ib a n n w a t i n v w ob n a
.•ponti w’ o tsn !>\u jm n nn ^ pin 'n> pnn
Per evitare scosse elettriche, non rim uovere la copertura in
plastica che avvolge la parte inferiore della scheda
invertitore.
Para evitar descargas, no quite la cubierta de plastico que
rodea la parte baja de la tarjeta invertida.
14 ThinkPad R40

Safety notices
S a fe ty n o tice 7
A DANGER
Though the main batteries have low voltage, a shorted or
grounded battery can produce enough curre nt to burn
personnel o r com bustible materials.
Bien que le voltage des batteries principa les soit peu eleve,
le court-circuit ou la mise a la masse d'une batterie peut
produire suffisamm ent de courant pour bruler des m ateriaux
co m bustible s ou causer des brulures co rporelles graves.
Obw ohl Hauptbatterien eine niedrige Spannung haben,
konnen sie doch bei KurzschluB oder Erdung genug Strom
abgeben, um brennbare Materialien zu entzunden oder
Verletzungen bei Personen hervorzurufen.
,T>»a Mia wton. in wwKiti tnVrtww in
jiB’ i r t p’owa tn t p*atib tiSiin npisoa w msnpa
.o*p»yr trnain imsm* w< w>H3
Sebbene le batterie di alim entazione siano a basso voltaggio,
una batteria in co rto circ u ito o a massa pud fornire corrente
sufficiente da bruciare m ateriali com b ustib ili o provocare
ustio ni ai tecn ici di manutenzione.
Aunque las baterfas principales tienen un voltaje bajo, una
baterfa cortocircuitada o con contacto a tierra puede
pro ducir la corriente suficiente com o para quemar material
com bustible o provocar quem aduras en el personal.
Introduction 15

Safety notices
S a fe ty n o tice 8
A DANGER
Before removing any FRU, power o ff the com puter, unplug all
power co rds from electrical outlets, remove the battery pack,
and then disconnect any interconnecting cables.
Avant de re tirer une unite rempla$able en clientele, mettez le
system e hors tension, debranchez tous les cordons
d'alim entation des socles de prise de courant, retirez la
batterie et deconnectez tous les cordons d'interface.
Die Strom zufuhr muB abgeschaltet, alle S trom kabel aus der
Steckdose gezogen, der Akku entfernt und alle
Verbindungskabel abgenomm en sein, bevor eine FRU
entfernt w ird.
,a « m a t i U N naab ynv'n F R U >aai>
x n m i * >»pvn bovrm >Saa 'n tm pn&
Q » in N n a > n >baa p m i n n , r if * lon m a tm
.fib jo \u* a x
Prima di rim uovere qualsiasi FRU, spegnere il sistema,
scollegare dalle prese elettriche tu tti i cavi di alimentazione,
rim uovere la batteria e poi scollegare i cavi di
interconnessione.
Antes de quitar una FRU, apague el sistem a, desenchufe
todos los cables de las tom as de corriente electrica, quite la
baterfa y, a continuacion, desconecte cualquier cable de
conexion entre d ispo sitivos.
16 ThinkPad R40