Lenovo Ideapad 720-15IKB Owner's manual
Lenovo ideapad 720-15IKB
Hardware
Maintenance
Manual
Note:
• Before using this information and the product it supports, be sure to read the general information under
“Notices” on page 83.
First Edition (June 2017)
© Copyright Lenovo 2017. All rights reserved.
LIMITEDANDRESTRICTEDRIGHTSNOTICE:IfdataorsoftwareisdeliveredpursuantaGeneral
ServicesAdministration“GSA”contract,use,reproduction,ordisclosureissubjecttorestrictionsset
forthinContractNo.GS-35F-05925.
©2017Lenovo
iii
Contents
About this manual ....................................... iv
Safety information........................................ 1
Generalsafety................................................ 2
Electricalsafety.............................................. 3
Safetyinspectionguide.................................. 5
Handlingdevicesthataresensitiveto
electrostaticdischarge.................................... 6
Groundingrequirements................................. 6
Safetynotices:multilingualtranslations.......... 7
Lasercompliancestatement......................... 14
Important service information................... 16
StrategyforreplacingFRUs......................... 16
Strategyforreplacingaharddiskdrive............17
Importantnoticeforreplacingasystem
board................................................................17
Importantinformationaboutreplacing
RoHScompliantFRUs................................. 18
General checkout ...................................... 19
Whattodorst............................................. 20
Powersystemcheckout................................ 21
CheckingtheACadapter.................................21
Checkingoperationalcharging.........................22
Checkingthebatterypack................................22
Related service information ...................... 23
Restoringthefactorycontentsbyusing
OneKeyRecovery........................................ 23
Restoreoffactorydefault.................................23
Passwords.................................................... 24
Power-onpassword..........................................24
Hard-diskpassword..........................................24
Administratorpassword....................................24
Powermanagement..................................... 25
Puttingthecomputertosleeporshuttingit
down.................................................................25
Puttingyourcomputertosleep.........................25
Shuttingdownthecomputer.............................26
Lenovo ideapad 720-15IKB........................ 27
Specications............................................... 27
Statusindicators........................................... 29
Hotkeys......................................................... 30
FRUreplacementnotices............................. 31
Screwnotices.................................................. 31
RemovingandreplacinganFRU................. 32
1010Basecover...............................................33
1020Batterypack.............................................36
1030PCIExpressMiniCardforwireless
LAN...................................................................38
1040DIMM.......................................................40
1050HarddiskdriveandSSDcard................. 41
1060Speakers.................................................44
1070Fanandheatsinkassembly....................45
1080Uppercase.............................................. 48
1090I/Oboard,backupbatteryand
ngerprintboard...............................................51
1100
Systemboardandtouchpad.................... 55
1110LCDunit...................................................58
1120Integratedcameraandmicrophone
assembly...........................................................63
Locations...................................................... 64
Frontviewandright-sideview..........................64
BottomandLeft-sideview............................... 65
Partslist........................................................ 66
Overall..............................................................67
LCDFRUs........................................................79
Miscellaneousparts..........................................81
ACadapters......................................................81
Screws..............................................................81
Powercord........................................................81
Notices......................................................... 83
Trademarks.................................................. 84
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About this manual
Thismanualcontainsserviceandreferenceinformationforthefollowing
Lenovoproduct:
Lenovo ideapad 720-15IKB
Usethismanualtotroubleshootproblems.
Themanualisdividedintothefollowingsections:
• Thecommonsectionsprovidegeneralinformation,guidelines,andsafety
informationrequiredforservicingcomputers.
• Theproduct-specicsectionincludesservice,reference,andproduct-specic
partsinformation.
Important:
This manual is intended only for trained servicers who are familiar with Lenovo
products. Use this manual to troubleshoot problems effectively.
Before servicing a Lenovo product, make sure to read all the information under
“Safety information” on page 1 and “Important service information” on page 16.
1
Safety information
Safety information
Thischapterpresentsthefollowingsafetyinformationthatyouneed toget
familiarwithbeforeyouserviceaLenovoideapad720-15IKBcomputer:
• “Generalsafety”onpage2
• “Electricalsafety”onpage3
• “Safetyinspectionguide”onpage5
• “Handlingdevicesthataresensitivetoelectrostaticdischarge”onpage6
• “Groundingrequirements”onpage6
• “Safetynotices:multilingualtranslations”onpage7
• “Lasercompliancestatement”onpage14
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ideapad 720-15IKB Hardware Maintenance Manual
General safety
Followtheserulesbelowtoensuregeneralsafety:
• Observeagoodhousekeeping intheareawherethemachinesareput
duringandafterthemaintenance.
• Whenliftinganyheavyobject:
1. Makesurethatyoucanstandsafelywithoutslipping.
2. Distributetheweightoftheobjectequallybetweenyourfeet.
3. Useaslowliftingforce.Nevermovesuddenlyortwistwhenyouattempt
toliftit.
4. Liftitbystandingorpushingupwithyourlegmuscles;thisactioncould
avoidthestrainfromthemusclesinyourback.Donotattempttoliftany
objectthatweighsmorethan16kg(35lb)orthatyouthinkistooheavy
foryou.
• Donotperformany actionthatcauseshazardstothecustomer,orthat
makesthemachineunsafe.
• Beforeyou startthe machine,makesurethatother servicerepresentatives
andthecustomerarenotinahazardousposition.
• Pleaseremovecoversand otherparts inasafeplace,awayfromall
personnel,whileyouareservicingthemachine.
• Keepyourtoolcaseawayfromwalkareassothatotherpeoplewillnottrip
overit.
• Donotwearlooseclothingthatcanbetrappedinthemovingpartsofthe
machine.Makesurethatyoursleevesarefastenedorrolledupaboveyour
elbows.Ifyourhairislong,fastenit.
• Inserttheendsofyournecktieorscarfinsideclothingorfastenitwiththe
nonconductiveclip,about8centimeters(3inches)fromtheend.
• Donotwearjewelry,chains,metal-frameeyeglasses,ormetalfastenersfor
yourclothing.
Attention:Metalobjectsaregoodelectricalconductors.
• Wearsafetyglasses whenyouarehammering,drilling, soldering,cutting
wire,attachingsprings,usingsolvents,orworkinginanyotherconditions
thatmaybehazardoustoyoureyes.
• Afterservice, reinstallall safetyshields,guards,labels,and groundwires.
Replaceanysafetydevicethatiswornordefective.
• Reinstallallcoverscorrectlybeforereturningthemachinetothecustomer.
• Fanlouversonthe machinehelp toprevent theoverheatingofinternal
components.Donotobstruct fanlouvers orcover themwithlabelsor
stickers.
3
Safety information
Electrical safety
Observethefollowingruleswhenworkingonelectricalequipments.
Important:
Use only approved tools and test equipments. Some hand tools have handles
covered with a soft material that does not insulate you when working with live
electrical currents.
Many customers have rubber floor mats near their machines that contain small
conductive bers to decrease electrostatic discharges. Do not use such kind of mat
to protect yourself from electrical shock.
• Findtheroomemergency power-off(EPO)switch,disconnectingswitchor
electricaloutlet.Ifan electricalaccident occurs,youcanthenoperatethe
switchorunplugthepowercordquickly.
• Donotworkalone underhazardousconditionsornear theequipmentthat
hashazardousvoltages.
• Disconnectallpowerbefore:
– Performingamechanicalinspection
– Workingnearpowersupplies
– Removingorinstallingmainunits
• Beforeyoustarttoworkonthemachine,unplugthepowercord.If you
cannotunplugit,askthecustomerto power-offthewall boxthat supplies
powertothemachine,andtolockthewallboxintheoffposition.
• Ifyouneedtoworkonamachinethathasexposedelectricalcircuits,
observethefollowingprecautions:
– Ensurethatanotherperson,familiarwiththepower-offcontrols,isnear
you.
Attention:Anotherperson mustbetheretoswitchoffthepower, if
necessary.
– Useonlyonehandwhenworkingwithpowered-onelectricalequipment;
keeptheotherhandinyourpocketorbehindyourback.
Attention:Anelectricalshockcanoccuronlywhenthereisacomplete
circuit.Byobservingtheaboverule,you mayprevent acurrentfrom
passingthroughyourbody.
– Whenusingtesters,setthecontrolscorrectlyandusetheapproved
probeleadsandaccessoriesforthattester.
– Standonsuitablerubbermats(obtainedlocally,ifnecessary)toinsulate
youfromgroundssuchasmetaloorstripsandmachineframes.
Observethespecialsafetyprecautionswhenyouworkwithveryhighvoltages;
instructionsfortheseprecautionsareinthesafetysectionsofmaintenance
information.Beextremelycarefulwhenyoumeasurethehighvoltages.
• Regularlyinspectandmaintainyourelectricalhandtoolsforsafeoperational
condition.
• Donotusewornorbrokentoolsandtesters.
• Neverassumethatpowerhasbeendisconnectedfromacircuit.First,check
ittomakesurethatithasbeenpoweredoff.
Safety information
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ideapad 720-15IKB Hardware Maintenance Manual
• Alwayslookcarefullyforpossiblehazardsinyourworkarea.Examplesof
thesehazardsaremoistoors,nongroundedpowerextensioncables,power
surges,andmissingsafetygrounds.
• Donottouchlive electricalcircuits withthe reflectivesurfaceofaplastic
dentalmirror.Thesurfaceisconductive;suchtouching cancause personal
injuryandmachinedamage.
• Donotservicethefollowingpartswiththepoweronwhentheyareremoved
fromtheirnormaloperatingplacesinamachine:
– Powersupplyunits
– Pumps
– Blowersandfans
– Motorgenerators
andsimilarunits.(Thispracticeensurescorrectgroundingoftheunits.)
• Ifanelectricalaccidentoccurs:
– Caution:donotbecomeavictimyourself.
– Switchoffthepower.
– Sendthevictimtogetmedicalaid.
5
Safety information
Safety inspection guide
Thepurpose ofthis inspectionguideistoassistyouin identifyingpotential
unsafeconditions.Aseachmachine wasdesigned andbuilt,requiredsafety
itemswereinstalledtoprotectusersandservice personnelfrom injury.This
guideaddressesonlythose items.Youshouldusegoodjudgmenttoidentify
potentialsafetyhazardsaccordingtotheattachmentofnon-Lenovofeaturesor
optionsnotcoveredbythisinspectionguide.
Ifanyunsafeconditionsarepresent,youmustdeterminehowseriousthe
apparenthazardcouldbeandwhetheryoucancontinuewithoutrstcorrecting
theproblem.
Considertheseconditionsandthesafetyhazardstheypresent:
• Electricalhazards,especiallyprimarypower (primaryvoltageontheframe
cancauseseriousorfatalelectricalshock)
• Explosivehazards,suchasadamagedCRTfaceorabulgingcapacitor
• Mechanicalhazards,suchaslooseormissinghardware
Todeterminewhetherthereareanypotentialunsafeconditions,use the
followingchecklistatthebeginningofeveryservicetask.Beginthecheckswith
thepoweroff,andthepowercorddisconnected.
Checklist:
1. Checkexteriorcoversfordamage(loose,broken,orsharpedges).
2. Turnoffthecomputer.Disconnectthepowercord.
3. Checkthepowercordfor:
a. Athird-wiregroundconnectoringoodcondition.Useametertomeasure
third-wiregroundcontinuityfor0.1ohmorlessbetweenthe external
groundpinandtheframeground.
b. Thepowercordshouldbethetypespeciedinthepartslist.
c. Insulationmustnotbefrayedorworn.
4. Checkforcrackedorbulgingbatteries.
5. Removethecover.
6. Checkforanyobviousnon-Lenovoalterations.Usegoodjudgmentastothe
safetyofanynon-Lenovoalterations.
7. Checkinside theunitforanyobviousunsafeconditions,such asmetal
filings,contamination,waterorotherliquids,orsigns offire orsmoke
damage.
8. Checkforworn,frayed,orpinchedcables.
9. Checkthatthepower-supplycover fasteners(screwsorrivets)have not
beenremovedortamperedwith.
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ideapad 720-15IKB Hardware Maintenance Manual
Handling devices that are sensitive to electrostatic discharge
Anycomputerpartcontainingtransistorsorintegratedcircuits (ICs)should be
consideredsensitivetoelectrostaticdischarge(ESD).ESDdamagecanoccur
whenthere isa differenceinchargebetween objects.ProtectagainstESD
damagebyequalizingthechargesothatthemachine,thepart,theworkmat,
andthepersonhandlingthepartareallatthesamecharge.
Notes:
1. Use product-specic ESD procedures when they exceed the requirements noted
here.
2. Make sure that the ESD protective devices you use have been certied (ISO
9000) as fully effective.
WhenhandlingESD-sensitiveparts:
• Keepthepartsinprotectivepackagesuntiltheyareinsertedintotheproduct.
• Avoidcontactwithotherpeople.
• Wearagroundedwriststrapagainstyourskintoeliminatestaticon your
body.
• Preventthepartfromtouchingyourclothing.Mostclothingisinsulativeand
retainsachargeevenwhenyouarewearingawriststrap.
• Usetheblacksideofagroundedworkmattoprovideastatic-freework
surface.ThematisespeciallyusefulwhenhandlingESD-sensitivedevices.
• Selectagroundingsystem,suchasthoselistedbelow,toprovideprotection
thatmeetsthespecicservicerequirement.
Note:
The use of a grounding system to guard against ESD damage is desirable but not
necessary.
– AttachtheESDgroundcliptoanyframeground,groundbraid,orgreen-
wireground.
– Whenworkingonadouble-insulatedorbattery-operatedsystem,usean
ESDcommongroundorreferencepoint.Youcanusecoaxorconnector-
outsideshellsonthesesystems.
– Usetheroundgroundprongoftheacplugonac-operatedcomputers.
Grounding requirements
Electricalgroundingofthecomputerisrequiredforoperatorsafetyandcorrect
systemfunction.Propergroundingoftheelectricaloutletcanbeveriedbya
certiedelectrician.
7
Safety information
Safety notices: multilingual translations
Thesafetynoticesin thissection areprovidedinEnglish,French, German,
Hebrew,Italian,Japanese,andSpanish.
Safety notice 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 akes can cause electrical shorts.
Avant de remettre l’ordinateur sous tension après remplacement d’une unité en
clientèle, vériez que tous les ressorts, vis et autres pièces sont bien en place et
bien xées. Pour ce faire, secouez l’unité et assurez-vous qu’aucun bruit suspect ne
se produit. Des pièces métalliques ou des copeaux de métal pourraient causer un
court-circuit.
Bevor nach einem FRU-Austausch der Computer wieder angeschlossen wird,
muß sichergestellt werden, daß keine Schrauben, Federn oder andere Kleinteile
fehlen oder im Gehäuse vergessen wurden. Der Computer muß geschüttelt und auf
Klappergeräusche geprüft werden. Metallteile oder-splitter können Kurzschlüsse
erzeugen.
Prima di accendere l’elaboratore dopo che é 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.
Vericare ciò scuotendo l’elaboratore e prestando attenzione ad eventuali rumori;
eventuali parti o pezzetti metallici possono provocare cortocircuiti pericolosi.
Antes de encender el sistema despues de sustituir una FRU, compruebe que
todos los tornillos, muelles y demás piezas pequeñas se encuentran en su sitio
y no se encuentran sueltas dentro del sistema. Compruébelo agitando el sistema
y escuchando los posibles ruidos que provocarían. Las piezas metálicas pueden
causar cortocircuitos eléctricos.
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ideapad 720-15IKB Hardware Maintenance Manual
Safety notice 2
DANGER
Some standby batteries contain a small amount of nickel and cadmium. Do not
disassemble a standby battery, recharge it, throw it into fire or water, or short-
circuit it. Dispose of the battery as required by local ordinances or regulations.
Use only the battery in the appropriate parts listing. Use of an incorrect battery can
result in ignition or explosion of the battery.
Certaines batteries de secours contiennent du nickel et du cadmium. Ne les
démontez pas, ne les rechargez pas, ne les exposez ni au feu ni à l’eau. Ne
les mettez pas en court-circuit. Pour les mettre au rebut, conformez-vous à la
réglementation en vigueur. Lorsque vous remplacez la pile de sauvegarde ou celle
de l’horloge temps réel, veillez à n’utiliser que les modèles cités dans la liste de
pièces détachées adéquate. Une batterie ou une pile inappropriée risque de prendre
feu ou d’exploser.
Die Bereitschaftsbatterie, die sich unter dem Diskettenlaufwerk befindet,
kann geringe Mengen Nickel und Cadmium enthalten. Sie darf nicht zerlegt,
wiederaufgeladen, kurzgeschlossen, oder Feuer oder Wasser ausgesetzt werden. Bei
der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten. Beim Ersetzen
der Bereitschafts-oder Systembatterie nur Batterien des Typs verwenden, der in der
Ersatzteilliste aufgeführt ist. Der Einsatz falscher Batterien kann zu Entzündung oder
Explosion führen.
Alcune batterie di riserva contengono una piccola quantità di nichel e cadmio. Non
smontarle, ricaricarle, gettarle nel fuoco o nell’acqua né cortocircuitarle. Smaltirle
secondo la normativa in vigore (DPR 915/82, successive disposizioni e disposizioni
locali). Quando si sostituisce la batteria dell’RTC (real time clock) o la batteria di
supporto, utilizzare soltanto i tipi inseriti nell’appropriato Catalogo parti. L’impiego
di una batteria non adatta potrebbe determinare l’incendio o l’esplosione della
batteria stessa.
Algunas baterías de reserva contienen una pequeña cantidad de níquel y cadmio.
No las desmonte, ni recargue, ni las eche al fuego o al agua ni las cortocircuite.
Deséchelas tal como dispone la normativa local. Utilice sólo baterías que se
encuentren en la lista de piezas. La utilización de una batería no apropiada puede
provocar la ignición o explosión de la misma.
9
Safety information
Safety notice 3
DANGER
The battery pack contains small amounts of nickel. Do not disassemble it, throw
it into re or water, or short-circuit it. Dispose of the battery pack as required by
local ordinances or regulations. Use only the battery in the appropriate parts listing
when replacing the battery pack. Use of an incorrect battery can result in ignition
or explosion of the battery.
La batterie contient du nickel. Ne la démontez pas, ne l’exposez ni au feu ni à l’eau.
Ne la mettez pas en court-circuit. Pour la mettre au rebut, conformez-vous à la
réglementation en vigueur. Lorsque vous remplacez la batterie, veillez à n’utiliser
que les modèles cités dans la liste de pièces détachées adéquate. En effet, une
batterie inappropriée risque de prendre feu ou d’exploser.
Akkus enthalten geringe Mengen von Nickel. Sie dürfen nicht zerlegt,
wiederaufgeladen, kurzgeschlossen, oder Feuer oder Wasser ausgesetzt werden.
Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten. Beim
Ersetzen der Batterie nur Batterien des Typs verwenden, der in der Ersatzteilliste
aufgeführt ist. Der Einsatz falscher Batterien kann zu Entzündung oder Explosion
führen.
La batteria contiene piccole quantità di nichel. Non smontarla, gettarla nel fuoco
o nell’acqua né cortocircuitarla. Smaltirla secondo la normativa in vigore (DPR
915/82, successive disposizioni e disposizioni locali). Quando si sostituisce la
batteria, utilizzare soltanto i tipi inseriti nell’appropriato Catalogo parti. L’impiego
di una batteria non adatta potrebbe determinare l’incendio o l’esplosione della
batteria stessa.
Las baterías contienen pequeñas cantidades de níquel. No las desmonte, ni
recargue, ni las eche al fuego o al agua ni las cortocircuite. Deséchelas tal como
dispone la normativa local. Utilice sólo baterías que se encuentren en la lista de
piezas al sustituir la batería. La utilización de una batería no apropiada puede
provocar la ignición o explosión de la misma.
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ideapad 720-15IKB Hardware Maintenance Manual
Safety notice 4
DANGER
The lithium battery can cause a re, an explosion, or a severe burn. Do not recharge
it, remove its polarized connector, disassemble it, heat it above 100°C (212°F),
incinerate it, or expose its cell contents to water. Dispose of the battery as required
by local ordinances or regulations. Use only the battery in the appropriate parts
listing. Use of an incorrect battery can result in ignition or explosion of the battery.
La pile de sauvegarde contient du lithium. Elle présente des risques d’incendie,
d’explosion ou de brûlures graves. Ne la rechargez pas, ne retirez pas son
connecteur polarisé et ne la démontez pas. Ne l’exposez pas à une temperature
supérieure à 100°C, ne la faites pas brûler et n’en exposez pas le contenu à l’eau.
Mettez la pile au rebut conformément à la réglementation en vigueur. Une pile
inappropriée risque de prendre feu ou d’exploser.
Die Systembatterie ist eine Lithiumbatterie. Sie kann sich entzünden, explodieren
oder schwere Verbrennungen hervorrufen. Batterien dieses Typs dürfen nicht
aufgeladen, zerlegt, über 100 C erhitzt oder verbrannt werden. Auch darf ihr Inhalt
nicht mit Wasser in Verbindung gebracht oder der zur richtigen Polung angebrachte
Verbindungsstecker entfernt werden. Bei der Entsorgung die örtlichen Bestimmungen
für Sondermüll beachten. Beim Ersetzen der Batterie nur Batterien des Typs
verwenden, der in der Ersatzteilliste aufgeführt ist. Der Einsatz falscher Batterien
kann zu Entzündung oder Explosion führen.
La batteria di supporto e una batteria al litio e puo incendiarsi, esplodere o
procurare gravi ustioni. Evitare di ricaricarla, smontarne il connettore polarizzato,
smontarla, riscaldarla ad una temperatura superiore ai 100 gradi centigradi,
incendiarla o gettarla in acqua. Smaltirla secondo la normativa in vigore (DPR
915/82, successive disposizioni e disposizioni locali). L’impiego di una batteria
non adatta potrebbe determinare l’incendio o l’esplosione della batteria stessa.
La batería de repuesto es una batería de litio y puede provocar incendios,
explosiones o quemaduras graves. No la recargue, ni quite el conector polarizado,
ni la desmonte, ni caliente por encima de los 100°C (212°F), ni la incinere ni
exponga el contenido de sus celdas al agua. Deséchela tal como dispone la
normativa local.
11
Safety information
Safety notice 5
If the LCD breaks and the uid from inside the LCD gets into your eyes or on your
hands, immediately wash the affected areas with water at least for 15 minutes. Seek
medical care if any symptoms caused by the uid are present after washing.
Si le panneau d’afchage à 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 médecin si des symptômes persistent après le
lavage.
Die Leuchtstoffröhre im LCD-Bildschirm enthält Quecksilber. Bei der Entsorgung
die örtlichen Bestimmungen für Sondermüll beachten. Der LCD-Bildschirm
besteht aus Glas und kann zerbrechen, wenn er unsachgemäß behandelt wird
oder der Computer auf den Boden fällt. Wenn der Bildschirm beschädigt ist und
die darin befindliche Flüssigkeit in Kontakt mit Haut und Augen gerät, sollten
die betroffenen Stellen mindestens 15 Minuten mit Wasser abgespült und bei
Beschwerden anschließend ein Arzt aufgesucht werden.
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 uido de su interior entra en contacto con sus ojos o sus
manos, lave inmediatamente las áreas afectadas con agua durante 15 minutos como
mínimo. Obtenga atención medica si se presenta algún síntoma del uido despues
de lavarse.
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ideapad 720-15IKB Hardware Maintenance Manual
Safety notice 6
DANGER
To avoid shock, do not remove the plastic cover that protects the lower part of the
inverter card.
An d’éviter tout risque de choc électrique, ne retirez pas le cache en plastique
protégeant la partie inférieure de la carte d’alimentation.
Aus Sicherheitsgründen die Kunststoffabdeckung, die den unteren Teil der
Spannungswandlerplatine umgibt, nicht entfernen.
Per evitare scosse elettriche, non rimuovere la copertura in plastica che avvolge la
parte inferiore della scheda invertitore.
Para evitar descargas, no quite la cubierta de plástico que rodea la parte baja de la
tarjeta invertida.
Safety notice 7
DANGER
Though the main batteries have low voltage, a shorted or grounded battery can
produce enough current to burn personnel or combustible materials.
Bien que le voltage des batteries principales soit peu élevé, le court-circuit ou la
mise à la masse d’une batterie peut produire sufsamment de courant pour brûler
des matériaux combustibles ou causer des brûlures corporelles graves.
Obwohl Hauptbatterien eine niedrige Spannung haben, können sie doch bei
Kurzschluß oder Erdung genug Strom abgeben, um brennbare Materialien zu
entzünden oder Verletzungen bei Personen hervorzurufen.
Sebbene le batterie di alimentazione siano a basso voltaggio, una batteria in
corto circuito o a massa può fornire corrente sufficiente da bruciare materiali
combustibili o provocare ustioni ai tecnici di manutenzione.
Aunque las baterías principales tienen un voltaje bajo, una batería cortocircuitada
o con contacto a tierra puede producir la corriente suciente como para quemar
material combustible o provocar quemaduras en el personal.
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Safety information
Safety notice 8
DANGER
Before removing any FRU, turn off the computer, unplug all power cords from
electrical outlets, remove the battery pack, and then disconnect any interconnecting
cables.
Avant de retirer une unité remplaçable en clientèle, mettez le système hors tension,
débranchez tous les cordons d’alimentation des socles de prise de courant, retirez la
batterie et déconnectez tous les cordons d’interface.
Die Stromzufuhr muß abgeschaltet, alle Stromkabel aus der Steckdose gezogen,
der Akku entfernt und alle Verbindungskabel abgenommen sein, bevor eine FRU
entfernt wird.
Prima di rimuovere qualsiasi FRU, spegnere il sistema, scollegare dalle prese
elettriche tutti i cavi di alimentazione, rimuovere la batteria e poi scollegare i cavi
di interconnessione.
Antes de quitar una FRU, apague el sistema, desenchufe todos los cables de las
tomas de corriente eléctrica, quite la batería y, a continuación, desconecte cualquier
cable de conexión entre dispositivos.
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ideapad 720-15IKB Hardware Maintenance Manual
Laser compliance statement
SomemodelsofLenovocomputerareequippedfromthefactorywithan
opticalstorage devicesuchasaCD-ROMdriveor aDVD-ROMdrive.Such
devicesarealsosoldseparatelyasoptions.Ifoneofthesedrivesisinstalled,
itiscertiedintheU.S.toconformtotherequirements ofthe Departmentof
HealthandHumanServices21CodeofFederalRegulations(DHHS21CFR)
SubchapterJforClass1laserproducts.Elsewhere,thedriveiscertifiedto
conformtotherequirements ofthe InternationalElectrotechnicalCommission
(IEC)825andCENELECEN60825forClass1laserproducts.
IfaCD-ROMdrive,aDVD-ROMdrive,oranotherlaserdeviceisinstalled,note
thefollowing:
CAUTION
Use of controls or adjustments or performance of procedures other than those
specied herein might result in hazardous radiation exposure.
O uso de controles, ajustes ou desempenho de procedimentos diferentes daqueles
aqui especicados pode resultar em perigosa exposição à radiação.
Pour éviter tout risque d’exposition au rayon laser, respectez les consignes de
réglage et d’utilisation des commandes, ainsi que les procédures décrites.
Werden Steuer- und Einstellelemente anders als hier festgesetzt verwendet, kann
gefährliche Laserstrahlung auftreten.
L’utilizzo di controlli, regolazioni o l’esecuzione di procedure diverse da quelle
specicate possono provocare l’esposizione a.
El uso de controles o ajustes o la ejecución de procedimientos distintos de los aquí
especicados puede provocar la exposición a radiaciones peligrosas.
OpeningtheCD-ROMdrive,theDVD-ROMdrive,oranyotheropticalstorage
devicecouldresultinexposureto hazardouslaser radiation.Thereareno
serviceablepartsinsidethosedrives.Do not open.
15
Safety information
ACD-ROMdrive,aDVD-ROMdrive,oranyotherstoragedeviceinstalledmay
containanembeddedClass3AorClass3Blaserdiode.Notethefollowing:
DANGER
Emits visible and invisible laser radiation when open. Do not stare into the beam,
do not view directly with optical instruments, and avoid direct exposure to the
beam.
Radiação por raio laser ao abrir. Não olhe xo no feixe de luz, não olhe diretamente
por meio de instrumentos óticos e evite exposição direta com o feixe de luz.
Rayonnement laser si carter ouvert. Évitez de fixer le faisceau, de le regarder
directement avec des instruments optiques, ou de vous exposer au rayon.
Laserstrahlung bei geöffnetem Gerät. Nicht direkt oder über optische Instrumente
in den Laserstrahl sehen und den Strahlungsbereich meiden.
Kinyitáskor lézersugár ! Ne nézzen bele se szabad szemmel, se optikai
eszközökkel. Kerülje a sugárnyalábbal való érintkezést!
Aprendo l’unità vengono emesse radiazioni laser. Non fissare il fascio, non
guardarlo direttamente con strumenti ottici e evitare l’esposizione diretta al fascio.
Radiación láser al abrir. No mire jamente ni examine con instrumental óptico el
haz de luz. Evite la exposición directa al haz.
16
ideapad 720-15IKB Hardware Maintenance Manual
Important service information
Thischapterpresentsthefollowingimportantserviceinformation:
• “StrategyforreplacingFRUs”onpage16
– “Strategyforreplacingaharddiskdrive”onpage17
– “Importantnoticeforreplacingasystemboard”onpage17
• “ImportantinformationaboutreplacingRoHScompliantFRUs”onpage18
Important:
BIOS and device driver xes are customer-installable. The BIOS and device
drivers are posted on the customer support site:
http://support.lenovo.com.
Strategy for replacing FRUs
Before replacing parts:
Makesurethatall softwarexes,drivers,andBIOSdownloadsare installed
beforereplacinganyFRUslistedinthismanual.
Afterasystemboardisreplaced,ensurethatthelatestBIOSisloadedtothe
systemboardbeforecompletingtheserviceaction.
Todownloadsoftwarexes,drivers,andBIOS,followthestepsbelow:
1. Gotohttp://support.lenovo.com.
2. Enterthe serialnumberorselectaproductoruseLenovosmart
downloading.
3. SelecttheBIOS/Driver/Applicationsanddownload.
4. Followthedirectionsonthescreenandinstallthenecessarysoftware.
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