Manuals / Lenovo / Computer Equipment / Personal Computer

Lenovo A720 About this manual, Important Safety Information

Models: A720

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Chapter 1. About this manual

This manual contains service and reference information for IdeaCentre A720 computers listed on the cover. It is intended only for trained servicers who are familiar with Lenovo computer products.

Before servicing a Lenovo product, be sure to read the Safety Information.

The description of the TV-tuner card in this manual applies only to computers with a TV-tuner card installed. It does not apply to computers without a TV-tuner card.

Important Safety Information

Be sure to read all CAUTION and DANGER sections in this manual before following any of the instructions.

Veuillez lire toutes les consignes de type DANGER et ATTENTION du présent document avant d’exécuter les instructions.

Lesen Sie unbedingt alle Hinweise vom Typ “ACHTUNG” oder “VORSICHT” in dieser Dokumentation, bevor Sie irgendwelche Vorgänge durchführen

Leggere le istruzioni introdotte da ATTENZIONE e PERICOLO presenti nel manuale prima di eseguire una qualsiasi delle istruzioni

Certifique-se de ler todas as instruções de cuidado e perigo neste manual antes de executar qualquer uma das instruções

Es importante que lea todas las declaraciones de precaución y de peligro de este manual antes de seguir las instrucciones.

© Copyright Lenovo 2012

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Lenovo A720 About this manual, Important Safety Information

Contents

IdeaCentre A720 Hardware Maintenance Manual Page IdeaCentre A720 Hardware Maintenance Manual Page Contents Iv IdeaCentre A720Hardware Maintenance Manual About this manual Important Safety InformationIdeaCentre A720Hardware Maintenance Manual General safety Safety informationElectrical safety IdeaCentre A720Hardware Maintenance Manual Handling electrostatic discharge-sensitive devices Safety inspection guideGrounding requirements Safety noticesTo Connect To Disconnect Do not≥18 kg 37 lbs ≥32 kg 70.5 lbs ≥55 kg 121.2 lbs Environment SpecificationsGeneral information Type IdeaCentre A720IdeaCentre A720Hardware Maintenance Manual General Checkout IdeaCentre A720Hardware Maintenance Manual Using passwords Using the Setup UtilityStarting the Lenovo Bios Setup Utility program Viewing and changing settingsSetting, changing, or deleting an Administrator password Administrator PasswordSetting, changing, or deleting a Power-On Password Select Save changes and Exit from the menu Enabling or disabling a deviceSelecting a temporary startup device Selecting a startup deviceSelecting or changing the startup device sequence Exiting the Lenovo Bios Setup Utility program IdeaCentre A720Hardware Maintenance Manual Error FRU/Action Symptom-to-FRU IndexHard disk drive boot error Power Supply ProblemsUndetermined problems Post error codesPost Error Message Description/Action Font view Locating connectors, controls and componentsLeft and right view Rear view CPU Hardware componentsIdentifying parts on the motherboard TV-Tuner card connector Battery Identifying parts on the back of the LED panel IdeaCentre A720Hardware Maintenance Manual Replacing hardware Pre-disassembly instructionsGeneral information To replace the keyboard and mouse Replacing the power cord or power adapterTo replace the power cord and power adapter Replacing the keyboard and mouseTo remove the base cover Removing the base coverTo replace the hard disk drive Replacing the hard disk driveReplacing hardware To replace the system fan Replacing a memory moduleReplacing the system fan To replace a memory moduleTo replace the heat-sink Replacing the heat-sinkTo replace the CPU Replacing the CPUReplacing hardware To replace the optical drive Replacing the optical driveReplacing hardware To replace the optical drive eject board Replacing the solid state diskReplacing the optical drive eject board To replace the solid state diskTo replace the motherboard Replacing the motherboardIdeaCentre A720Hardware Maintenance Manual To replace the speaker system Replacing the speaker systemIdeaCentre A720Hardware Maintenance Manual To replace the TV tuner card Replacing the TV tuner cardTo replace the battery Replacing the batteryTo remove the hinge from the chassis Removing the hinge from the chassisIdeaCentre A720Hardware Maintenance Manual To remove the rear cover Removing the rear coverTo replace the scalar board Replacing the scalar boardReplacing hardware To replace the touch control board Replacing the touch control boardTo replace the converter board Replacing the converter boardTo replace the power switch board Replacing the power switch boardTo replace the Bluetooth module Replacing the Bluetooth moduleTo replace the Wlan card Replacing the Wlan cardTo replace the camera Replacing the cameraTo replace the front function board Replacing the front function boardTo replace the LED panel Replacing the LED panelIdeaCentre A720Hardware Maintenance Manual FRU lists Motherboard Item # FRUs Service Part Number FRUOptical disk drive MemoryHard disk drive Solid state diskHeat-sink Power SupplyRemote control Bluetooth moduleKeyboard Touch control boardMouse Power cordsPanel Back Light Cable MechanicalIdeaCentre A720Hardware Maintenance Manual Automatic Power-On features Additional Service InformationPower management Advanced configuration and power interface Acpi Bios