Lenovo ThinkCentre M50 Quick Reference Manual

ThinkCentre M50
Lenovo
Brand
Lenovo
Model
ThinkCentre M50
Type
Quick Reference Manual
ThinkCentre
™
Quick
Reference
Inside
-
Important
safety
information
-
Warranty
and
other
notices
-
Computer
setup
-
Software
recovery
-
Troubleshooting
and
diagnostics
-
IBM
help
and
service
-
IBM
Lotus
software
offer

ThinkCentre
™
Quick
Reference

Note
Before
using
this
information
and
the
product
it
supports,
be
sure
to
read
the
following:
v
“Important
safety
information”
on
page
v
v
Appendix
B,
“IBM
Statement
of
Limited
Warranty
Z125-4753-07
11/2002,”
on
page
33
v
Appendix
C,
“Notices,”
on
page
59
Fifth
Edition
(October
2003)
©
Copyright
International
Business
Machines
Corporation
2003.
All
rights
reserved.
US
Government
Users
Restricted
Rights
–
Use,
duplication
or
disclosure
restricted
by
GSA
ADP
Schedule
Contract
with
IBM
Corp.
Contents
Important
safety
information
.
.
.
.
.
.
.
.
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.
.
.v
Conditions
that
require
immediate
action
.
.
.
.
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.
.
.
.
.
.
.v
General
safety
guidelines
.
.
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.
.vi
Additional
safety
information
.
.
.
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.
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.
.
.
.ix
Lithium
battery
notice
.
.
.
.
.
.
.
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.
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.
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.
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.
.
.xi
Modem
safety
information
.
.
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.
.
.
. xii
Laser
compliance
statement
.
.
.
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.
. xii
Additional
help
.
.
.
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.
.xv
Chapter
1.
Arranging
your
workspace
.
.
.
.
.
.
.
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.
.
.1
Comfort
.
.
.
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.
.
.1
Chapter
2.
Setting
up
your
computer
.
.
.
.
.
.
.
.
.
.
.
.
.3
Turning
on
power
.
.
.
.
.
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.
.
.7
Finishing
the
software
installation
.
.
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.
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.
.
.7
Completing
important
tasks
.
.
.
.
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.
.7
Updating
your
operating
system
.
.
.
.
.
.
.
.
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.
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.
.
.8
Installing
other
operating
systems
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.8
Updating
anivirus
your
software
.
.
.
.
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.
.
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.
.
.
.
.
.
.8
Starting
the
IBM
Setup
Utility
.
.
.
.
.
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.
.
.9
Shutting
down
the
computer
.
.
.
.
.
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.
.
.
.9
Recording
your
computer
information
.
.
.
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.
.
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.
.
.
.
.
.9
Chapter
3.
Recovering
software
.
.
.
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.
.
.
.11
Performing
a
software
recovery
.
.
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.
.11
Solving
recovery
problems
.
.
.
.
.
.
.
.
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.
.
.
.
.
.
.
.12
Recovering
or
installing
device
drivers
.
.
.
.
.
.
.
.
.
.
.
.
.13
Chapter
4.
Troubleshooting
and
diagnostics
.
.
.
.
.
.
.
.
.
.15
Basic
troubleshooting
.
.
.
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.
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.
.15
IBM
Enhanced
Diagnostics
.
.
.
.
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.
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.
.
.
.
.
.17
Error
codes
.
.
.
.
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.
.
.18
POST
beep
codes
.
.
.
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.
.
.20
Chapter
5.
Getting
information,
help,
and
service
.
.
.
.
.
.
.
.
.23
Getting
information
.
.
.
.
.
.
.
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.
.
.
.
.
.
.
.
.23
Getting
help
and
service
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.23
Purchasing
additional
services
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.27
Appendix
A.
IBM
Lotus
Software
Offer
.
.
.
.
.
.
.
.
.
.
.
.29
©
Copyright
IBM
Corp.
2003
iii
Appendix
B.
IBM
Statement
of
Limited
Warranty
Z125-4753-07
11/2002
33
Part
1
-
General
Terms
.
.
.
.
.
.
.
.
.
.
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.
.
.
.
.
.
.
.33
Part
2
-
Country-unique
Terms
.
.
.
.
.
.
.
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.
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.
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.
.
.36
Part
3
-
Warranty
Information
.
.
.
.
.
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.
.
.
.
.
.
.
.
.
.48
Guarantee
supplement
for
Mexico
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.56
Appendix
C.
Notices
.
.
.
.
.
.
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.
.59
Trademarks
.
.
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.
.60
Electronic
emissions
notices
.
.
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.
.60
Power
cord
notice
.
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.
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.
.
.
.
.64
Polyvinyl
Chloride
(PVC)
cable
and
cord
notice
.
.
.
.
.
.
.
.
.
.66
iv
Quick
Reference
Indholdsfortegnelse
Vigtige
sikkerhedsforskrifter
.
.
.
.
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.
67
Forhold,
der
kræver
øjeblikkelig
handling
.
.
.
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.
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.
67
Generelle
sikkerhedsforskrifter
.
.
.
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.
68
Andre
sikkerhedsforskrifter
.
.
.
.
.
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.
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.
.
.
.
.
.
71
Bemærkning
om
litiumbatteri
.
.
.
.
.
.
.
.
.
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.
.
.
.
.
.
72
Sikkerhedsforskrifter
for
modem
.
.
.
.
.
.
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.
.
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.
72
Sikkerhedsforskrifter
for
laser
.
.
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.
.
73
Mere
hjælp
.
.
.
.
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.
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. 75
Kapitel
1.
Indretning
af
arbejdspladsen
.
.
.
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.
77
Behagelig
arbejdsstilling
.
.
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.
77
Kapitel
2.
Klargøring
af
computeren
.
.
.
.
.
.
.
.
.
.
.
.
.
79
Tænd
for
systemet
.
.
.
.
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.
83
Afslutning
af
programinstallationen
.
.
.
.
.
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.
83
Afslutning
af
vigtige
opgaver
.
.
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.
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.
83
Opdatering
af
styresystemet
.
.
.
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.
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.
84
Installation
af
andre
styresystemer
.
.
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.
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.
.
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.
.
84
Opdatering
af
antivirusprogrammet
.
.
.
.
.
.
.
.
.
.
.
.
.
84
Start
af
programmet
IBM
Setup
Utility
.
.
.
.
.
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.
85
Slukning
af
computeren
.
.
.
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.
.
85
Registrering
af
oplysninger
om
computeren
.
.
.
.
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.
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.
.
85
Kapitel
3.
Retablering
af
programmer
.
.
.
.
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.
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.
.
.87
Retablering
af
programmer
.
.
.
.
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.
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.
.87
Løsning
af
retableringsproblemer
.
.
.
.
.
.
.
.
.
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.
.
.
.
.88
Retablering
eller
installation
af
styreprogrammer
.
.
.
.
.
.
.
.
.
.89
Kapitel
4.
Fejlfinding
og
problemløsning
.
.
.
.
.
.
.
.
.
.
.
.91
Grundlæggende
fejlfinding
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.91
IBM
Enhanced
Diagnostics
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.92
Fejlkoder
.
.
.
.
.
.
.
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.
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.
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.
.
.93
POST-bipkoder
.
.
.
.
.
.
.
.
.
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.
.
.
.
.
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.
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.
.
.96
Kapitel
5.
Oplysninger,
hjælp
og
service
.
.
.
.
.
.
.
.
.
.
.
.99
Oplysninger
.
.
.
.
.
.
.
.
.
.
.
.
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.
.99
Hjælp
og
service
.
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.99
Køb
af
flere
serviceydelser
.
.
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.
102
Tillæg
A.
IBM
Lotus-programtilbud
.
.
.
.
.
.
.
.
.
.
.
.
.
103
©
Copyright
IBM
Danmark
A/S
2003
Tillæg
B.
IBM
Servicebevis
Z125-4753-07
11/2002
.
.
.
.
.
.
.
.
107
Del
1
-
Standardvilkår
.
.
.
.
.
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.
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.
107
Del
2
-
Særlige
vilkår
for
specifikke
lande
.
.
.
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.
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.
.
111
Del
3
-
Garantioplysninger
.
.
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.
122
Garantitillæg
for
Mexico
.
.
.
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.
130
Tillæg
C.
Bemærkninger
.
.
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133
Varemærker
.
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133
Bemærkninger
vedr.
elektronisk
stråling
.
.
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.
134
Netledninger
.
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.
137
Bemærkning
vedr.
PVC-kabel
og
-ledning
.
.
.
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.
138
Kom
godt
i
gang
Innhold
Viktig
sikkerhetsinformasjon
.
.
.
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.
139
Situasjoner
som
krever
øyeblikkelig
inngripen
.
.
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.
139
Generelle
retningslinjer
for
sikkerhet
.
.
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.
140
Annen
sikkerhetsinformasjon
.
.
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.
143
Litiumbatteri
.
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145
Modemsikkerhet
.
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. 146
Laserutstyr
.
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.
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.
. 146
Mer
informasjon
.
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.
149
Kapittel
1.
Ordne
arbeidsområdet
.
.
.
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.
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.
151
Komfort
.
.
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.
151
Kapittel
2.
Klargjøre
datamaskinen
.
.
.
.
.
.
.
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.
.
.
.
.
153
Slå
på
strømmen
.
.
.
.
.
.
.
.
.
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.
.
.
.
.
157
Fullføre
installeringen
av
programvaren
.
.
.
.
.
.
.
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.
.
.
.
157
Fullføre
viktige
oppgaver
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
157
Oppdatere
operativsystemet
.
.
.
.
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.
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.
.
158
Installere
andre
operativsystemer
.
.
.
.
.
.
.
.
.
.
.
.
.
.
158
Oppdatere
antivirusprogramvaren
.
.
.
.
.
.
.
.
.
.
.
.
.
.
158
Starte
IBM
Setup
Utility
.
.
.
.
.
.
.
.
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.
.
.
.
.
.
.
159
Slå
av
maskinen
.
.
.
.
.
.
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.
.
.
.
.
159
Notere
opplysninger
om
maskinen
.
.
.
.
.
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.
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.
.
.
.
159
Kapittel
3.
Gjenopprette
programvare
.
.
.
.
.
.
.
.
.
.
.
.
.161
Utføre
en
programvaregjenoppretting
.
.
.
.
.
.
.
.
.
.
.
.
.
.161
Løse
problemer
med
gjenopprettingen
.
.
.
.
.
.
.
.
.
.
.
.
.162
Gjenopprette
eller
installere
styreprogrammer
.
.
.
.
.
.
.
.
.
.
.163
Kapittel
4.
Problemløsing
og
feilsøking
.
.
.
.
.
.
.
.
.
.
.
.165
Grunnleggende
problemløsing
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.165
IBM
Enhanced
Diagnostics
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.166
Feilkoder
.
.
.
.
.
.
.
.
.
.
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.
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.
.
.
.
.168
POST-lydkoder
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.170
Kapittel
5.
Få
informasjon,
hjelp
og
service
.
.
.
.
.
.
.
.
.
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.173
Få
informasjon
.
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.173
Få
hjelp
og
service
.
.
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.
.173
Kjøpe
tilleggstjenester
.
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.
.177
Tillegg
A.
Tilbud
om
IBM
Lotus-programvare
.
.
.
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.
.
.
.
.
.179
©
Copyright
IBM
Corp.
2003
Tillegg
B.
IBMs
garantibetingelser
Z125-4753-07
11/2002
.
.
.
.
.
.183
Del
1
-
Generelle
betingelser
.
.
.
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.
.183
Del
2
-
Landavhengige
betingelser
.
.
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.
.186
Del
3
-
Opplysninger
om
garantibetingelser
.
.
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.198
Guarantee
supplement
for
Mexico
.
.
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.
.
.207
Tillegg
C.
Merknader
.
.
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.209
Varemerker
.
.
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.210
Elektronisk
stråling
.
.
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.210
Strømledning
.
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.215
PVC-ledning
.
.
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.216
Hurtigreferanse
Sisältö
Tärkeät
turvaohjeet
.
.
.
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.
.
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.
217
Välittömiä
toimia
edellyttävät
tapahtumat
tai
tilat
.
.
.
.
.
.
.
.
.
217
Yleisiä
turvaohjeita
.
.
.
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.
218
Lisää
turvaohjeita
.
.
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.
222
Litiumparistoon
liittyvä
huomautus
.
.
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.
.
.
.
.
222
Modeemiin
liittyviä
turvaohjeita
.
.
.
.
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.
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.
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.
.
.
.
223
Laserturvaohjeet
.
.
.
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223
Lisätietoja
.
.
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.
.
. 225
Luku
1.
Työtilan
järjestely
.
.
.
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.
.
.
227
Työskentelymukavuus
.
.
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.
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.
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.
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.
.
227
Luku
2.
Tietokoneen
asennus
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
229
Virran
kytkentä
laitteisiin
.
.
.
.
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.
.
.
.
.
234
Ohjelmien
asennuksen
päättäminen
.
.
.
.
.
.
.
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.
.
235
Toimet
ennen
aloitusta
.
.
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.
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.
.
.
235
Käyttöjärjestelmän
päivitys
.
.
.
.
.
.
.
.
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.
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.
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.
.
.226
Muiden
käyttöjärjestelmien
asennus
.
.
.
.
.
.
.
.
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.
.
.
.
.226
Virustentorjuntaohjelman
päivitys
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.226
IBM-asetusohjelman
aloitus
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.226
Tietokoneen
käytön
lopetus
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.227
Tietokoneen
tunnistetietojen
kirjaus
.
.
.
.
.
.
.
.
.
.
.
.
.
.227
Luku
3.
Ohjelmien
palautus
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.239
Ohjelmiston
elvytys
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.239
Elvytykseen
liittyvien
ongelmien
ratkaisu
.
.
.
.
.
.
.
.
.
.
.
.240
Laiteajurien
elvytys
(asennus)
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.241
Luku
4.
Vianmääritys
ja
häiriöiden
poisto
.
.
.
.
.
.
.
.
.
.
.243
Yleisimpien
häiriöiden
vianmääritys
.
.
.
.
.
.
.
.
.
.
.
.
.
.243
IBM
Enhanced
Diagnostics
-vianmääritysohjelma
.
.
.
.
.
.
.
.
.
.244
Virhekoodit
.
.
.
.
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.
.
.
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.
.
.
.
.
.
.
.246
Automaattisten
käynnistystestien
(POST)
äänimerkit
.
.
.
.
.
.
.
.
.248
Luku
5.
Tietojen,
ohjeiden
ja
tukipalvelujen
saanti
.
.
.
.
.
.
.
.251
Tietojen
saanti
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.251
Ohjeiden
ja
tukipalvelujen
saanti
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.251
Lisäpalvelujen
hankinta
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.254
Liite
A.
IBM
Lotus
-ohjelmistotarjous
.
.
.
.
.
.
.
.
.
.
.
.
.257
©
Copyright
IBM
Corp.
2003
Liite
B.
IBM:n
takuuehdot
(rajoitettu
takuu)
Z125-4753-07
11/2002
.
.
.261
Osa
1
-
Yleiset
ehdot
.
.
.
.
.
.
.
.
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.
.
.
.
.
.
.
.261
Osa
2
-
Maakohtaiset
ehdot
.
.
.
.
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.
.
.
.
.
.
.
.
.
.
.
.265
Osa
3
-
Takuuta
koskevat
tiedot
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.277
Meksikoa
koskevat
lisätakuuehdot
.
.
.
.
.
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.
.
.
.
.
.
.286
Liite
C.
Huomioon
otettavaa
.
.
.
.
.
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.
.
.
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.
.
.
.
.287
Tavaramerkit
.
.
.
.
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.
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.
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.
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.
.
.
.
.288
Tietoja
sähkömagneettisesta
säteilystä
.
.
.
.
.
.
.
.
.
.
.
.
.
.289
Verkkojohtoa
koskeva
huomautus
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.292
PVC-kaapelia
ja
verkkojohtoa
koskeva
huomautus
.
.
.
.
.
.
.
.
.293
Pikaopas
Innehåll
Viktig
säkerhetsinformation
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
295
Situationer
som
kräver
omedelbara
åtgärder
.
.
.
.
.
.
.
.
.
.
.
295
Allmänna
säkerhetsanvisningar
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
296
Ytterligare
säkerhetsinformation
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
299
Batteri
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
300
Säkerhetsanvisningar
för
modem
.
.
.
.
.
.
.
.
.
.
.
.
.
.
300
Information
om
laserprodukt
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
301
Här
finns
hjälp
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 303
Kapitel
1.
Ordna
din
arbetsplats
.
.
.
.
.
.
.
.
.
.
.
.
.
.
305
Arbeta
bekvämt
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
Kapitel
2.
Installera
datorn
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
307
Starta
datorn
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
311
Avsluta
programinstallationen
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
312
Genomföra
viktiga
uppgifter
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
312
Uppdatera
operativsystemet
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
313
Installera
andra
operativsystem
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
313
Uppdatera
datorns
antivirusprogram
.
.
.
.
.
.
.
.
.
.
.
.
.
313
Starta
inställningsprogrammet
IBM
Setup
Utility
.
.
.
.
.
.
.
.
.
313
Stänga
av
datorn
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.314
Registrera
information
om
datorn
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.314
Kapitel
3.
Återställning
av
program
.
.
.
.
.
.
.
.
.
.
.
.
.
.317
Återställa
programvara
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.317
Lösa
återställningsproblem
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.318
Återställa
eller
installera
om
drivrutiner
.
.
.
.
.
.
.
.
.
.
.
.
.319
Kapitel
4.
Felsökning
och
diagnostik
.
.
.
.
.
.
.
.
.
.
.
.
.321
Enkel
felsökning
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.321
IBM
Enhanced
Diagnostics
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.322
Felkoder
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.324
Ljudsignaler
från
självtest
(POST)
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.326
Kapitel
5.
Information,
hjälp
och
service
.
.
.
.
.
.
.
.
.
.
.
.329
Information
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.329
Hjälp
och
service
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.329
Köpa
tilläggstjänster
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.332
Bilaga
A.
Erbjudande
om
IBM
Lotus-programvara
.
.
.
.
.
.
.
.335
©
Copyright
IBM
Corp
2003
Bilaga
B.
IBMs
garantivillkor
Z125-4753-07
11/2002
.
.
.
.
.
.
.
.339
Del
1
-
Allmänna
villkor
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.339
Del
2
-
Nationsspecifika
villkor
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.342
Del
3
-
Garantiinformation
.
.
.
.
.
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.
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.
.
.
.
.
.
.
.
.354
Garantitillägg
för
Mexiko
.
.
.
.
.
.
.
.
.
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.
.
.
.
.
.
.
.362
Bilaga
C.
Anmärkningar
.
.
.
.
.
.
.
.
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.
.
.
.
.
.
.
.
.363
Varumärken
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.364
Anmärkningar
om
elektromagnetisk
strålning
.
.
.
.
.
.
.
.
.
.
.364
Information
om
strömsladdar
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.368
PVC-kabeln
och
information
om
nätkablar
.
.
.
.
.
.
.
.
.
.
.
.370
Översikt
Important
safety
information
This
information
can
help
you
safely
use
your
IBM
®
personal
computer.
Follow
and
retain
all
information
included
with
your
IBM
computer.
The
information
in
this
document
does
not
alter
the
terms
of
your
purchase
agreement
or
the
IBM
Statement
of
Limited
Warranty.
Customer
safety
is
important
to
IBM.
Our
products
are
developed
to
be
safe
and
effective.
However,
personal
computers
are
electronic
devices.
Power
cords,
power
adapters,
and
other
features
can
create
potential
safety
risks
that
can
result
in
physical
injury
or
property
damage,
especially
if
misused.
To
reduce
these
risks,
follow
the
instructions
included
with
your
product,
observe
all
warnings
on
the
product
and
in
the
operating
instructions,
and
review
the
information
included
in
this
document
carefully.
By
carefully
following
the
information
contained
in
this
document
and
provided
with
your
product,
you
can
help
protect
yourself
from
hazards
and
create
a
safer
computer
work
environment.
Note:
This
information
includes
references
to
power
adapters
and
batteries.
In
addition
to
mobile
personal
computers,
IBM
ships
some
products
(such
as
speakers
or
monitors)
with
external
power
adapters.
If
you
have
such
a
product,
this
information
applies
to
your
product.
In
addition,
your
computer
product
may
contain
a
coin-sized
internal
battery
that
provides
power
to
your
system
clock
even
when
the
machine
is
unplugged,
so
the
battery
safety
information
applies
to
all
computers.
Conditions
that
require
immediate
action
Products
can
become
damaged
due
to
misuse
or
neglect.
Some
product
damage
is
serious
enough
that
the
product
should
not
be
used
again
until
it
has
been
inspected
and,
if
necessary,
repaired
by
an
authorized
servicer.
As
with
any
electronic
device,
pay
close
attention
to
the
product
when
it
is
turned
on.
On
very
rare
occasions,
you
might
notice
an
odor
or
see
a
puff
of
smoke
or
sparks
vent
from
your
machine.
Or
you
might
hear
sounds
like
popping,
cracking
or
hissing.
These
conditions
might
merely
mean
that
an
internal
electronic
component
has
failed
in
a
safe
and
controlled
manner.
Or,
they
might
indicate
a
potential
safety
issue.
However,
do
not
take
risks
or
attempt
to
diagnose
the
situation
yourself.
Frequently
inspect
your
computer
and
its
components
for
damage
or
wear
or
signs
of
danger.
If
you
have
any
question
about
the
condition
of
a
component,
do
not
use
the
product.
Contact
the
IBM
HelpCenter
®
or
the
product
manufacturer
for
instructions
on
how
to
inspect
the
product
and
©
Copyright
IBM
Corp.
2003
v
have
it
repaired,
if
necessary.
The
telephone
numbers
for
your
IBM
HelpCenter
location
are
located
in
the
“Help
and
Service”
section
later
in
this
guide.
In
the
unlikely
event
that
you
notice
any
of
the
conditions
listed
below,
or
if
you
have
any
safety
concerns
with
your
product,
stop
using
the
product
and
unplug
it
from
the
power
source
and
telecommunication
lines
until
you
can
speak
to
the
IBM
HelpCenter
for
further
guidance.
The
telephone
numbers
for
your
HelpCenter
location
are
located
in
the
“Help
and
Service”
section
later
in
this
guide.
v
Power
cords,
plugs,
power
adapters,
extension
cords,
surge
protectors,
or
power
supplies
that
are
cracked,
broken
or
damaged.
v
Signs
of
overheating,
smoke,
sparks
or
fire.
v
Damage
to
a
battery
(such
as
cracks,
dents,
creases),
discharge
from
a
battery,
or
a
buildup
of
foreign
substances
on
the
battery.
v
A
cracking,
hissing
or
popping
sound,
or
strong
odor
that
comes
from
the
product.
v
Signs
that
liquid
has
been
spilled
or
an
object
has
fallen
onto
the
computer
product,
the
power
cord
or
power
adapter.
v
The
computer
product,
the
power
cord
or
power
adapter
has
been
exposed
to
water.
v
The
product
has
been
dropped
or
damaged
in
any
way.
v
The
product
does
not
operate
normally
when
you
follow
the
operating
instructions.
Note:
If
you
notice
these
conditions
with
a
non-IBM
product
(such
as
an
extension
cord),
stop
using
that
product
until
you
can
contact
the
product
manufacturer
for
further
instructions,
or
until
you
get
a
suitable
replacement.
General
safety
guidelines
Always
observe
the
following
precautions
to
reduce
the
risk
of
injury
and
property
damage.
Service
Do
not
attempt
to
service
a
product
yourself
unless
instructed
to
do
so
by
the
IBM
HelpCenter.
Use
only
an
IBM
authorized
service
provider
who
is
approved
to
repair
your
particular
product.
Note:
Some
parts
can
be
upgraded
or
replaced
by
the
customer.
These
parts
are
referred
to
as
Customer
Replaceable
Units,
or
CRUs.
IBM
expressly
identifies
CRUs
as
such,
and
provides
documentation
with
instructions
when
it
is
appropriate
for
customers
to
replace
those
parts.
You
must
closely
follow
all
vi
Quick
Reference
instructions
when
performing
such
replacements.
Always
make
sure
that
the
power
is
turned
off
and
that
the
product
is
unplugged
from
any
power
source
before
you
attempt
the
replacement.
If
you
have
any
questions
or
concerns,
contact
the
IBM
HelpCenter.
Power
cords
and
power
adapters
Use
only
the
power
cords
and
power
adapters
supplied
by
the
product
manufacturer.
Never
wrap
a
power
cord
around
the
power
adapter
or
other
object.
Doing
so
can
stress
the
cord
in
ways
that
can
cause
the
cord
to
fray,
crack
or
crimp.
This
can
present
a
safety
hazard.
Always
route
power
cords
so
that
they
will
not
be
walked
on,
tripped
over,
or
pinched
by
objects.
Protect
the
cord
and
power
adapters
from
liquids.
For
instance,
do
not
leave
your
cord
or
power
adapter
near
sinks,
tubs,
toilets,
or
on
floors
that
are
cleaned
with
liquid
cleansers.
Liquids
can
cause
a
short
circuit,
particularly
if
the
cord
or
power
adapter
has
been
stressed
by
misuse.
Liquids
can
also
cause
gradual
corrosion
of
the
power
cord
terminals
and/or
the
connector
terminals
on
the
adapter
which
can
eventually
result
in
overheating.
Always
connect
power
cords
and
signal
cables
in
the
correct
order
and
ensure
that
all
power
cord
connectors
are
securely
and
completely
plugged
into
receptacles.
Do
not
use
any
power
adapter
that
shows
corrosion
at
the
ac
input
pins
and/or
shows
signs
of
overheating
(such
as
deformed
plastic)
at
the
ac
input
or
anywhere
on
the
power
adapter.
Do
not
use
any
power
cords
where
the
electrical
contacts
on
either
end
show
signs
of
corrosion
or
overheating
or
where
the
power
cord
appears
to
have
been
damaged
in
any
way.
Extension
cords
and
related
devices
Ensure
that
extension
cords,
surge
protectors,
uninterruptible
power
supplies,
and
power
strips
that
you
use
are
rated
to
handle
the
electrical
requirements
of
the
product.
Never
overload
these
devices.
If
power
strips
are
used,
the
load
should
not
exceed
the
power
strip
input
rating.
Consult
an
electrician
for
more
information
if
you
have
questions
about
power
loads,
power
requirements,
and
input
ratings.
Important
safety
information
vii
Plugs
and
outlets
If
a
receptacle
(power
outlet)
that
you
intend
to
use
with
your
computer
equipment
appears
to
be
damaged
or
corroded,
do
not
use
the
outlet
until
it
is
replaced
by
a
qualified
electrician.
Do
not
bend
or
modify
the
plug.
If
the
plug
is
damaged,
contact
the
manufacturer
to
obtain
a
replacement.
Some
products
are
equipped
with
a
three-pronged
plug.
This
plug
fits
only
into
a
grounded
electrical
outlet.
This
is
a
safety
feature.
Do
not
defeat
this
safety
feature
by
trying
to
insert
it
into
a
non-grounded
outlet.
If
you
cannot
insert
the
plug
into
the
outlet,
contact
an
electrician
for
an
approved
outlet
adapter
or
to
replace
the
outlet
with
one
that
enables
this
safety
feature.
Never
overload
an
electrical
outlet.
The
overall
system
load
should
not
exceed
80
percent
of
the
branch
circuit
rating.
Consult
an
electrician
for
more
information
if
you
have
questions
about
power
loads
and
branch
circuit
ratings.
Be
sure
that
the
power
outlet
you
are
using
is
properly
wired,
easily
accessible,
and
located
close
to
the
equipment.
Do
not
fully
extend
power
cords
in
a
way
that
will
stress
the
cords.
Connect
and
disconnect
the
equipment
from
the
electrical
outlet
carefully
Batteries
All
IBM
personal
computers
contain
a
non-rechargeable
coin
cell
battery
to
provide
power
to
the
system
clock.
In
addition
many
mobile
products
such
as
Thinkpad
notebook
PCs
utilize
a
rechargeable
battery
pack
to
provide
system
power
when
in
portable
mode.
Batteries
supplied
by
IBM
for
use
with
your
product
have
been
tested
for
compatibility
and
should
only
be
replaced
with
IBM
approved
parts.
Never
attempt
to
open
or
service
any
battery.
Do
not
crush,
puncture,
or
incinerate
batteries
or
short
circuit
the
metal
contacts.
Do
not
expose
the
battery
to
water
or
other
liquids.
Only
recharge
the
battery
pack
strictly
according
to
instructions
included
in
the
product
documentation.
Battery
abuse
or
mishandling
can
cause
the
battery
to
overheat,
which
can
cause
gasses
or
flame
to
“vent”
from
the
battery
pack
or
coin
cell.
If
your
battery
is
damaged,
or
if
you
notice
any
discharge
from
your
battery
or
the
buildup
of
foreign
materials
on
the
battery
leads,
stop
using
the
battery
and
obtain
a
replacement
from
the
battery
manufacturer.
Batteries
can
degrade
when
they
are
left
unused
for
long
periods
of
time.
For
some
rechargeable
batteries
(particularly
Lithium
Ion
batteries),
leaving
a
battery
unused
in
a
discharged
state
could
increase
the
risk
of
a
battery
short
viii
Quick
Reference
circuit,
which
could
shorten
the
life
of
the
battery
and
can
also
pose
a
safety
hazard.
Do
not
let
rechargeable
Lithium-Ion
batteries
completely
discharge
or
store
these
batteries
in
a
discharged
state.
Heat
and
product
ventilation
Computers
generate
heat
when
turned
on
and
when
batteries
are
charging.
Notebook
PCs
can
generate
a
significant
amount
of
heat
due
to
their
compact
size.
Always
follow
these
basic
precautions:
v
Do
not
leave
the
base
of
your
computer
in
contact
with
your
lap
or
any
part
of
your
body
for
an
extended
period
when
the
computer
is
functioning
or
when
the
battery
is
charging.
Your
computer
produces
some
heat
during
normal
operation.
Extended
contact
with
the
body
could
cause
discomfort
or,
potentially,
a
skin
burn.
v
Do
not
operate
your
computer
or
charge
the
battery
near
flammable
materials
or
in
explosive
environments.
v
Ventilation
slots,
fans
and/or
heat
sinks
are
provided
with
the
product
for
safety,
comfort,
and
reliable
operation.
These
features
might
inadvertently
become
blocked
by
placing
the
product
on
a
bed,
sofa,
carpet,
or
other
flexible
surface.
Never
block,
cover
or
disable
these
features.
CD
and
DVD
drive
safety
CD
and
DVD
drives
spin
discs
at
a
high
speed.
If
a
CD
or
DVD
is
cracked
or
otherwise
physically
damaged,
it
is
possible
for
the
disc
to
break
apart
or
even
shatter
when
the
CD
drive
is
in
use.
To
protect
against
possible
injury
due
to
this
situation,
and
to
reduce
the
risk
of
damage
to
your
machine,
do
the
following:
v
Always
store
CD/DVD
discs
in
their
original
packaging
v
Always
store
CD/DVD
discs
out
of
direct
sunlight
and
away
from
direct
heat
sources
v
Remove
CD/DVD
discs
from
the
computer
when
not
in
use
v
Do
not
bend
or
flex
CD/DVD
discs,
or
force
them
into
the
computer
or
their
packaging
v
Check
CD/DVD
discs
for
cracks
before
each
use.
Do
not
use
cracked
or
damaged
discs
Additional
safety
information
DANGER
Electrical
current
from
power,
telephone,
and
communication
cables
is
hazardous.
To
avoid
a
shock
hazard:
Important
safety
information
ix
v
Do
not
connect
or
disconnect
any
cables
or
perform
installation,
maintenance,
or
reconfiguration
of
this
product
during
an
electrical
storm.
v
Connect
all
power
cords
to
a
properly
wired
and
grounded
electrical
outlet.
v
Connect
to
properly
wired
outlets
any
equipment
that
will
be
attached
to
this
product.
v
When
possible,
use
one
hand
only
to
connect
or
disconnect
signal
cables.
v
Never
turn
on
any
equipment
when
there
is
evidence
of
fire,
water,
or
structural
damage.
v
Disconnect
the
attached
power
cords,
telecommunications
systems,
networks,
and
modems
before
you
open
the
device
covers,
unless
instructed
otherwise
in
the
installation
and
configuration
procedures.
v
Connect
and
disconnect
cables
as
described
in
the
following
table
when
installing,
moving,
or
opening
covers
on
this
product
or
attached
devices.
To
connect:
1.
Turn
everything
OFF.
2.
First,
attach
all
cables
to
devices.
3.
Attach
signal
cables
to
connectors.
4.
Attach
power
cords
to
outlet.
5.
Turn
device
ON.
To
disconnect:
1.
Turn
everything
OFF.
2.
First,
remove
power
cords
from
outlet.
3.
Remove
signal
cables
from
connectors.
4.
Remove
all
cables
from
devices.
DANGER
Le
courant
électrique
provenant
de
l’alimentation,
du
téléphone
et
des
câbles
de
transmission
peut
présenter
un
danger.
Pour
éviter
tout
risque
de
choc
électrique
:
v
Ne
manipulez
aucun
câble
et
n’effectuez
aucune
opération
d’installation,
d’entretien
ou
de
reconfiguration
de
ce
produit
au
cours
d’un
orage.
v
Branchez
tous
les
cordons
d’alimentation
sur
un
socle
de
prise
de
courant
correctement
câblé
et
mis
à
la
terre.
v
Branchez
sur
des
socles
de
prise
de
courant
correctement
câblés
tout
équipement
connecté
à
ce
produit.
v
Lorsque
cela
est
possible,
n’utilisez
qu’une
seule
main
pour
connecter
ou
déconnecter
les
câbles
d’interface.;
v
Ne
mettez
jamais
un
équipement
sous
tension
en
cas
d’incendie
ou
d’inondation,
ou
en
présence
de
dommages
matériels.
v
Avant
de
retirer
les
carters
de
l’unité,
mettez
celle-ci
hors
tension
et
déconnectez
ses
cordons
d’alimentation,
ainsi
que
les
câbles
qui
la
relient
x
Quick
Reference
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Lenovo ThinkCentre M50 Quick Reference Manual

ThinkCentre M50
Lenovo
Brand
Lenovo
Model
ThinkCentre M50
Type
Quick Reference Manual
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