Lenovo ThinkCentre A58 Manuale utente

ThinkCentre

SafetyandWarrantyGuide

Note

Before using this information and the product it supports, be sure to read and

understand the following:

v Chapter 1, “Important safety information,” on page 1

v Chapter 3, “Lenovo Limited Warranty,” on page 19

v Chapter 6, “Notices,” on page 35

First Edition (September 2009)

LENOVO products, data, computer software, and services have been developed

exclusively at private expense and are sold to governmental entities as commercial items

as defined by 48 C.F.R. 2.101 with limited and restricted rights to use, reproduction and

disclosure.

LIMITED AND RESTRICTED RIGHTS NOTICE: If products, data, computer software, or

services are delivered pursuant a General Services Administration ″GSA″ contract, use,

reproduction, or disclosure is subject to restrictions set forth in Contract No.

GS-35F-05925.

Contents

Chapter 1. Important safety information ............1

Conditions that require immediate action .............1

General safety guidelines ..................2

Service and upgrades ..................2

Static electricity prevention ................3

Power cords and power adapters ..............4

Voltage-selection switch..................5

Extension cords and related devices .............5

Plugs and outlets ....................6

External devices ....................6

Batteries .......................6

Heat and product ventilation ................7

Operating environment ..................8

Electrical current safety information ..............8

Lithium battery notice ...................9

Modem safety information .................10

Laser compliance statement .................10

Power supply statement ..................11

Products with television tuner options installed ..........11

Note to CATV system installer ...............11

Example of antenna grounding ...............12

Data safety ......................13

Cleaning and maintenance .................14

Using headphones or earphones ...............14

Additional safety information ................14

Chapter 2. Information resources ..............15

Online Books folder ...................15

Lenovo ThinkVantage Tools .................15

Lenovo Care ......................16

Lenovo Welcome ....................16

Access Help ......................16

Lenovo Web site (http://www.lenovo.com)............16

Recording your computer information .............17

Chapter 3. Lenovo Limited Warranty .............19

Warranty Information ...................23

Suplemento de Garantía para México..............27

Chapter 4. Worldwide Lenovo Support telephone list .......29

Chapter 5. Customer Replaceable Units (CRUs) .........33

Chapter 6. Notices ...................35

Export classification notice .................36

Television output notice ..................36

Trademarks ......................36

Electronic emissions notices .................37

Federal Communications Commission Declaration of Conformity . . . 37

Industry Canada Class B emission compliance statement ......38

European Union EMC Directive conformance statement ......38

EU-EMC Directive (2004/108/EC) EN 55022 class B Statement of

Compliance ....................38

Korean Class B statement.................39

Japanese VCCI Class B statement ..............39

Japanese statement of compliance for products less than or equal to 20 A

per phase .....................39

Keyboard and mouse compliance statement for Taiwan.......40

Lenovo product service information for Taiwan .........40

Federal Communications Commission (FCC) and telephone company

requirements .....................40

Canadian Department of Communications certification label ......41

Power cord notice ....................42

Polyvinyl Chloride (PVC) cable and cord notice ..........44

China substance disclosure table ...............44

Turkish statement of compliance ...............45

Waste electrical and electronic equipment (WEEE) notices .......45

European Union (EU) WEEE statement ............45

Japanese recycling statement.................46

Collecting and recycling a disused Lenovo computer or monitor . . . 46

Disposing of Lenovo components ..............46

Disposing of disused lithium batteries from Lenovo computers ....46

iv Safety and Warranty Guide

Table des matières

Avis aux lecteurs canadiens ................49

Chapitre 1. Consignes de sécurité ..............53

Conditions qui nécessitent une action immédiate ..........53

Consignes générales de sécurité ................55

Maintenance et mises à niveau ...............55

Protection antistatique ..................56

Cordons et adaptateurs d’alimentation .............56

Sélecteur de tension ...................57

Prolongateurs et dispositifs associés .............58

Fiches et prises ....................58

Périphériques externes ..................59

Piles et batteries ....................59

Chaleur et ventilation des produits ..............60

Environnement d’exploitation ................61

Informations relatives à la sécurité du courant électrique ....... 62

Pile au lithium ..................... 63

Informations relatives au modem ............... 63

Conformité aux normes relatives aux appareils à laser ........ 64

Instruction concernant le bloc d’alimentation ........... 65

Produits disposant de syntoniseurs TV ............. 65

Remarque à l’intention des installateurs de systèmes CATV ..... 65

Exemple de mise à la terre d’une antenne ........... 66

Sécurité des données ................... 67

Entretien et maintenance .................. 68

Utilisation de casques et d’écouteurs .............. 68

Autres consignes de sécurité ................. 68

Chapitre 2. Sources d’informations .............. 69

Dossier Online Books ................... 69

Lenovo ThinkVantage Tools ................. 69

Lenovo Care ...................... 70

Lenovo Welcome .................... 70

Access Help ...................... 70

Site Web Lenovo (http://www.lenovo.com) ........... 71

Tableau d’informations .................. 72

Chapitre 3. Garantie Lenovo ................ 73

Informations relatives à la garantie .............. 79

Suplemento de Garantía para México .............. 83

Chapitre 4. Liste de numéros de téléphone Lenovo pour le monde

entier ....................... 85

Chapitre 5. Unités remplaçables par l’utilisateur (CRU) ....... 89

Chapitre 6. Remarques .................. 91

Restrictions à l’exportation ................. 92

Consigne relative à la sortie télévision ............. 92

Marques ....................... 93

Bruits radioélectriques ................... 93

Déclaration de conformité de la Federal Communications Commission 93

Avis de conformité à la réglementation d’Industrie Canada pour la

classe B ...................... 94

Avis de conformité à la directive de l’Union européenne ...... 94

Avis de conformité à la Directive 2004/108/CE du Parlement européen

et du Conseil (EN 55022) pour la classe B .......... 95

Corée - Avis de conformité pour la classe B .......... 96

Japon - Avis de conformité aux exigences du Voluntary Control Council

for Interference (VCCI) pour la classe B ........... 96

Avis de conformité aux normes japonaises pour les produits dont

l’intensité est inférieure ou égale à 20 A par phase ....... 96

Conformité aux normes relatives au clavier et à la souris pour Taïwan 96

Taïwan - Informations de maintenance pour les produits Lenovo . . . 96

Recommandations de la Federal Communications Commission (FCC) et des

entreprises de télécommunications [Etats Unis] ......... 97

Recommandation d’Industrie Canada ............. 98

Cordons d’alimentation .................. 99

Cordons d’alimentation et câbles sous enveloppe de PVC (chlorure de

polyvinyle) ...................... 101

Directive RoHS pour la Chine ................ 102

Avis de conformité pour la Turquie .............. 102

Déchets d’Equipements Electriques et Electroniques (DEEE) ......103

Avis de conformité à la directive DEEE de l’Union Européenne .... 103

Japon - Déclaration relative au recyclage .............104

Collecte et recyclage d’un ordinateur ou d’un écran Lenovo usagé . . . 104

Mise au rebut de composants Lenovo ............104

Mise au rebut des piles au lithium usagées des ordinateurs Lenovo . . 104

vi Consignes de sécurité et déclaration de garantie

Inhaltsverzeichnis

Kapitel 1. Wichtige Sicherheitshinweise ............105

Situationen, die sofortige Maßnahmen erfordern ..........105

Allgemeine Sicherheitsrichtlinien ...............107

Service und Upgrades ..................107

Statische Aufladung vermeiden ...............108

Netzkabel und Netzteile .................109

Spannungsauswahlschalter ................109

Verlängerungskabel und verwandte Einheiten ..........110

Netzstecker und Steckdosen ................111

Externe Einheiten ....................111

Batterien und Akkus ...................112

Erwärmung und Lüftung des Produkts ............112

Betriebsumgebung ................... 114

Sicherheitshinweise zur elektrischen Sicherheit .......... 114

Hinweis zur Lithiumbatterie ................. 115

Sicherheitshinweise zu Modems ............... 116

Lasersicherheit ..................... 116

Hinweise zu Netzteilen .................. 117

Produkte mit installierter TV-Empfangseinheit ........... 117

Hinweis an Installationsverantwortliche für Kabel-/CATV-Systeme . . . 118

Beispiel für die Erdung der Antenne ............. 118

Datensicherheit ..................... 119

Reinigung und Wartung .................. 120

Verwendung von Kopf- und Ohrhörern ............. 120

Zusätzliche Sicherheitshinweise ................ 121

Kapitel 2. Informationsressourcen .............. 123

Ordner mit Onlinebüchern ................. 123

Programm ″Lenovo ThinkVantage Tools″ ............ 124

Lenovo Care ...................... 124

Lenovo Welcome .................... 124

Access Help ...................... 125

Lenovo Website (http://www.lenovo.com) ............ 125

Computerdaten notieren .................. 126

Kapitel 3. Lenovo Begrenzte Herstellergarantie ......... 127

Garantieinformationen ................... 133

Suplemento de Garantía para México .............. 137

Kapitel 4. Liste der weltweit gültigen Telefonnummern für den Lenovo

Support ...................... 139

Kapitel 5. CRUs (Customer Replaceable Units) ......... 143

Kapitel 6. Bemerkungen ................. 145

Exportbestimmungen ................... 146

Hinweise zur TV-Ausgabe ................. 146

Marken ........................ 147

Hinweise zur elektromagnetischen Verträglichkeit ......... 147

FCC-Konformitätserklärung (Federal Communications Commission) 147

Industry Canada Class B emission compliance statement ...... 148

EU-Richtlinie zur elektromagnetischen Verträglichkeit ....... 148

EU-Richtlinie zur elektromagnetischen Verträglichkeit (2004/108/EG) EN

55022 der Klasse B .................. 149

Korean Class B statement ................. 150

Japanese VCCI Class B statement .............. 150

Japanese statement of compliance for products less than or equal to 20 A

per phase ..................... 150

Keyboard and mouse compliance statement for Taiwan ....... 150

Lenovo product service information for Taiwan ......... 150

Federal Communications Commission (FCC) and telephone company

requirements ..................... 151

Canadian Department of Communications certification label ...... 152

Hinweise zu Netzkabeln .................. 153

Polyvinyl Chloride (PVC) cable and cord notice .......... 155

China - Tabelle mit Hinweisen zu im Produkt enthaltenen Substanzen . . . 156

Turkish statement of compliance ............... 157

Hinweis zu Elektro- und Elektronikaltgeräten (WEEE) ........ 157

EU-Hinweis zu Elektro- und Elektronikaltgeräten (WEEE) ...... 157

Japanese recycling statement ................. 158

Collecting and recycling a disused Lenovo computer or monitor . . . 158

Disposing of Lenovo components .............. 158

Disposing of disused lithium batteries from Lenovo computers .... 159

viii Sicherheit und Garantie

Indice

Capitolo 1. Informazioni importanti sulla sicurezza ........161

Condizioni che richiedono un intervento immediato .........161

Indicazioni di sicurezza generali ................162

Servizio ed aggiornamenti .................163

Prevenzione dell’elettricità statistica .............164

Cavi e adattatori di alimentazione ..............164

Interruttore di selezione del voltaggio .............165

Cavi di estensione e dispositivi correlati ............166

Spine e prese .....................166

Periferiche esterne ...................167

Batterie .......................167

Surriscaldamento e ventilazione del prodotto ..........167

Ambiente di lavoro ...................168

Informazioni sulla sicurezza della corrente elettrica .........169

Avviso sulla batteria al litio ................. 170

Informazioni sulla sicurezza del modem ............. 170

Dichiarazione di conformità relativa al laser ........... 171

Alimentatore ...................... 172

Prodotti su cui è installato un sintonizzatore TV .......... 172

Nota per gli installatori di sistemi CATV ........... 172

Esempio di messa a terra di un’antenna ............ 173

Sicurezza dei dati .................... 174

Pulizia e manutenzione .................. 175

Utilizzo di cuffie o auricolari ................ 175

Ulteriori informazioni sulla sicurezza .............. 175

Capitolo 2. Fonti di informazioni ............... 177

Cartella Manuali in linea .................. 177

Lenovo ThinkVantage Tools ................. 177

Lenovo Care ...................... 178

Lenovo Welcome .................... 178

Access Help ...................... 178

Sito Web Lenovo (http://www.lenovo.com) ........... 179

Registrazione delle informazioni sul computer ........... 179

Capitolo 3. Garanzia limitata Lenovo ............. 181

Informazioni sulla garanzia ................. 188

Suplemento de Garantía para México .............. 191

Capitolo 4. Elenco telefonico internazionale per l’assistenza Lenovo 193

Capitolo 5. CRU (Customer Replaceable Unit) .......... 197

Capitolo 6. Informazioni particolari .............. 199

Informazioni importanti sulla classificazione delle esportazioni ..... 200

Informazioni particolari sull’uscita TV ............. 200

Marchi........................ 201

Informazioni sulle emissioni elettromagnetiche .......... 201

Dichiarazione di conformità FCC (Federal Communications Commission) 201

Industry Canada Class B emission compliance statement ...... 202

Dichiarazione di conformità alle norme della Comunità Europea . . . 202

Direttiva EU-EMC (2004/108/EC) EN 55022 classe B - Dichiarazione di

conformità ..................... 203

Korean Class B statement ................. 204

Japanese VCCI Class B statement .............. 204

Japanese statement of compliance for products less than or equal to 20 A

per phase ..................... 204

Keyboard and mouse compliance statement for Taiwan ....... 204

Lenovo product service information for Taiwan ......... 204

Federal Communications Commission (FCC) and telephone company

requirements ..................... 204

Canadian Department of Communications certification label ...... 205

Informazioni relative ai cavi di alimentazione ........... 206

Informazioni sui cavi PVC (Polyvinyl Chloride) .......... 209

China substance disclosure table ............... 210

Turkish statement of compliance ............... 210

Informazioni particolari su WEEE (waste electrical and electronic

equipment) ...................... 211

Dichiarazione WEEE EU (European Union) ........... 211

Dichiarazione di riciclo per il Giappone ............. 212

Raccolta e riciclo di monitor o computer Lenovo in disuso ..... 212

Smaltimento dei componenti Lenovo ............. 212

Smaltimento di batterie al litio in disuso dai computer Lenovo .... 212

x Guida in materia di sicurezza e garanzia

Chapter 1. Important safety information

Note: Be sure to read and understand the important safety information first.

This information can help you safely use your desktop or notebook personal

computer. Follow and retain all information included with your computer. The

information in this document does not alter the terms of your purchase

agreement or the Lenovo

®

Limited Warranty. For more information, refer to

Chapter 3, “Lenovo Limited Warranty,” on page 19.

Customer safety is important. 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 notebook computers, some products (such as speakers and

monitors) are shipped with external power adapters. If you have such a

product, this information applies to your product. In addition, computer

products contain a coin-sized internal battery that provides power to the

system clock even when the computer is unplugged, so the battery safety

information applies to all computer products.

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 Service

Provider.

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 product. 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. Contact the Customer Support

Center for further guidance. For a list of Service and Support phone

numbers, see Chapter 4, “Worldwide Lenovo Support telephone list,” on

page 29.

Frequently inspect your computer and its components for damage, wear, or

signs of danger. If you have any question about the condition of a

component, do not use the product. Contact the Customer Support Center or

the product manufacturer for instructions on how to inspect the product and

have it repaired, if necessary.

In the unlikely event that you notice any of the following conditions, 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 Customer Support Center for further guidance.

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, or 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, 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 product (such as an extension cord)

that is not manufactured for or by Lenovo, 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 and upgrades

Do not attempt to service a product yourself unless instructed to do so by the

Customer Support Center or your documentation. Only use a Service Provider

who is approved to repair your particular product.

2 Safety and Warranty Guide

Note: Some computer parts can be upgraded or replaced by the customer.

Upgrades typically are referred to as options. Replacement parts approved for

customer installation are referred to as Customer Replaceable Units, or CRUs.

Lenovo provides documentation with instructions when it is appropriate for

customers to install options or replace CRUs. You must closely follow all

instructions when installing or replacing parts. The Off state of a power

indicator does not necessarily mean that voltage levels inside a product are

zero. Before you remove the covers from a product equipped with a power

cord, always make sure that the power is turned off and that the product is

unplugged from any power source. For more information on CRUs, refer to the

ThinkCentre User Guide for this product. If you have any questions or concerns,

contact the Customer Support Center.

Although there are no moving parts in your computer after the power cord has

been disconnected, the following warnings are required for your safety.

DANGER

Hazardous moving parts. Keep fingers and other body parts away.

CAUTION:

Before replacing any CRUs, turn off the computer and wait three to five

minutes to let the computer cool before opening the cover.

Static electricity prevention

Static electricity, although harmless to you, can seriously damage computer

components and options. Improper handling of static-sensitive parts can cause

damage to the part. When you unpack an option or CRU, do not open the

static-protective package containing the part until the instructions direct you to

install it.

When you handle options or CRUs, or perform any work inside the computer,

take the following precautions to avoid static-electricity damage:

v Limit your movement. Movement can cause static electricity to build up

around you.

Chapter 1. Important safety information 3

v Always handle components carefully. Handle adapters, memory modules,

and other circuit boards by the edges. Never touch exposed circuitry.

v Prevent others from touching components.

v When you install a static-sensitive option or CRU, touch the static-protective

package containing the part to a metal expansion-slot cover or other

unpainted metal surface on the computer for at least two seconds. This

reduces static electricity in the package and your body.

v When possible, remove the static-sensitive part from the static-protective

packaging and install the part without setting it down. When this is not

possible, place the static-protective packaging on a smooth, level surface and

place the part on it.

v Do not place the part on the computer cover or other metal surface.

Power cords and power adapters

Use only the power cords and power adapters supplied by the product

manufacturer.

The power cords shall be safety approved. For Germany, it shall be H05VV-F,

3G, 0.75 mm

2

, or better. For other countries, the suitable types shall be used

accordingly.

Never wrap a power cord around a 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 power cord and power adapters from liquids. For instance, do not

leave your power 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 power cord or power adapter has been stressed by misuse.

Liquids also can cause gradual corrosion of power cord terminals and/or the

connector terminals on a power 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 or

shows signs of overheating (such as deformed plastic) at the ac input or

anywhere on the power adapter.

4 Safety and Warranty Guide

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.

Voltage-selection switch

Some computers are equipped with a voltage-selection switch located near the

power-cord connection point on the computer and some computers do not

have a voltage-selection switch. Before you install your computer or relocate

your computer to another country or region, you must be certain that you

have matched your computer to the voltage available at your electrical outlet.

CAUTION:

You must know the voltage of the electrical connection (outlet) where your

computer will be connected. If you do not know the voltage, contact your

local electric company or refer to official Web sites or other literature for

travelers to the country or region where you are located.

If your computer has a voltage-selection switch, you must set the switch to

match the voltage available at your electrical outlet. Setting the

voltage-selection switch incorrectly will cause the computer to malfunction and

might cause permanent damage to the computer. Do not connect the computer

to an electrical outlet until you have verified that the voltage-selection switch

setting matches the voltage available at the electrical outlets.

If your computer does not have a voltage-selection switch, inspect the

voltage-rating label on the bottom of the computer and note the following:

v If the voltage-rating label shows a range of either ″100-127 V″ or ″200-240 V,″

you must ensure that the voltage provided at the electrical outlet matches

the voltage rating on the computer label. If it does not match, do not

attempt to connect the computer to the electrical outlet, unless an external

device such as a voltage-converting transformer is used.

v If the voltage-rating label shows a dual range of ″100-127 V″ and ″200-240

V,″ this signifies that the computer is suitable for worldwide operation and

the computer will automatically adjust to the voltage at the electrical outlet

regardless of the country or region where the computer is being connected.

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.

Chapter 1. Important safety information 5

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.

Do not share an electrical outlet with other home or commercial appliances

that draw large amounts of electricity; otherwise, unstable voltage might

damage your computer, data, or attached devices.

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.

Be sure that the power outlet provides the correct voltage and current for the

product you are installing.

Carefully connect and disconnect the equipment from the electrical outlet.

External devices

Do not connect or disconnect any external device cables other than USB and

1394 cables while the computer power is on; otherwise, you might damage

your computer. To avoid possible damage to attached devices, wait at least five

seconds after the computer is shut down to disconnect external devices.

Batteries

All personal computers manufactured by Lenovo contain a non-rechargeable

coin cell battery to provide power to the system clock. In addition, many

mobile products, such as notebook computers, utilize a rechargeable battery

pack to provide system power when in portable mode. Batteries supplied by

Lenovo for use with your product have been tested for compatibility and

should only be replaced with approved parts.

6 Safety and Warranty Guide

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

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, power adapters, and many accessories can generate heat when

turned on and when batteries are charging. Always follow these basic

precautions:

v Do not leave your computer, power adapter, or accessories in contact with

your lap or any part of your body for an extended period when the

products are functioning or when the battery is charging. Your computer,

power adapter, and many accessories produce some heat during normal

operation. Extended contact with the body could cause discomfort or,

potentially, a skin burn.

v Do not charge the battery or operate your computer, power adapter, or

accessories near flammable materials or in explosive environments.

v Ventilation slots, fans, and 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.

Inspect your desktop computer for dust accumulation at least once every three

months. Before inspecting your computer, turn off the power and unplug the

computer’s power cord from the electrical outlet; then remove any dust from

vents and perforations in the bezel. If you notice external dust accumulation,

then examine and remove dust from the inside of the computer including heat

sink inlet fins, power supply vents, and fans. Always turn off and unplug the

computer before opening the cover. If possible, avoid operating your computer

within two feet of high-traffic areas. If you must operate your computer in or

near a high-traffic area, inspect and, if necessary, clean your computer more

frequently.

Chapter 1. Important safety information 7

For your safety and to maintain optimum computer performance, always

follow these basic precautions with your desktop computer:

v Keep the cover closed whenever the computer is plugged in.

v Regularly inspect the outside of the computer for dust accumulation.

v Remove dust from vents and any perforations in the bezel. More frequent

cleanings might be required for computers in dusty or high-traffic areas.

v Do not restrict or block any ventilation openings.

v Do not store or operate your computer inside furniture, as this might

increase the risk of overheating.

v Airflow temperatures into the computer should not exceed 35° C (95° F).

v Do not install air filtration devices. They may interfere with proper cooling.

Operating environment

The optimal environment in which to use your computer is 10°C-35°C

(50°F-95°F) with humidity ranging between 35% and 80%. If your computer is

stored or transported in temperatures less than 10°C (50°F), allow the cold

computer to rise slowly to an optimal operating temperature of 10°C-35°C

(50°F-95°F) before use. This process could take two hours in extreme

conditions. Failure to allow your computer to rise to an optimal operating

temperature before use could result in irreparable damage to your computer.

If possible, place your computer in a well-ventilated and dry area without

direct exposure to sunshine.

Keep electrical appliances such as an electric fan, radio, high-powered

speakers, air conditioner, and microwave oven away from your computer

because the strong magnetic fields generated by these appliances can damage

the monitor and data on the hard disk drive.

Do not place any beverages on top of or beside the computer or other attached

devices. If liquid is spilled on or in the computer or an attached device, a short

circuit or other damage might occur.

Do not eat or smoke over your keyboard. Particles that fall into your keyboard

can cause damage.

Electrical current safety information

DANGER

Electrical current from power, telephone, and communication cables is

hazardous.

To avoid a shock hazard:

8 Safety and Warranty Guide

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Lenovo ThinkCentre A58 Manuale utente

Lenovo ThinkCentre A58 Manuale utente

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