Contents

Important information about replacing RoHS

iii

About this manual

This manual contains service and reference information for the following Lenovo product:

Lenovo IdeaTab A2107A

Use this manual to troubleshoot problems.

The manual is divided into the following sections:

???The common sections provide general information, guidelines, and safety information required for servicing computers.

???The product-specific section includes service, reference, and product-specific parts information.

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.

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Safety information

Safety information

This chapter presents the following safety information that you need to get familiar with before you service a Lenovo computer:

??????General safety??? on page 2

??????Electrical safety??? on page 3

??????Safety inspection guide??? on page 5

??????Handling devices that are sensitive to electrostatic discharge??? on page 6

??????Grounding requirements??? on page 6

??????Safety notices: multilingual translations??? on page 7

??????Laser compliance statement??? on page 14

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Lenovo IdeaTab A2107A Hardware Maintenance Manual

General safety

Follow these rules below to ensure general safety:

???Observe a good housekeeping in the area where the machines are put during and after the maintenance.

???When lifting any heavy object:

1.Make sure that you can stand safely without slipping.

2.Distribute the weight of the object equally between your feet.

3.Use a slow lifting force. Never move suddenly or twist when you attempt to lift it.

4.Lift it by standing or pushing up with your leg muscles; this action could avoid the strain from the muscles in your back. Do not attempt to lift any object that weighs more than 16 kg (35 lb) or that you think is too heavy for you.

???Do not perform any action that causes hazards to the customer, or that makes the machine unsafe.

???Before you start the machine, make sure that other service representatives and the customer are not in a hazardous position.

???Place removed covers and other parts in a safe place, keeping them away from all personnel, while you are servicing the machine.

???Keep your toolcase away from walk areas so that other people will not trip it over.

???Do not wear loose clothing that can be trapped in the moving parts of the machine. Make sure that your sleeves are fastened or rolled up above your elbows. If your hair is long, fasten it.

???Insert the ends of your necktie or scarf inside clothing or fasten it with the nonconductive clip, about 8 centimeters (3 inches) from the end.

???Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your clothing.

Attention: Metal objects are good electrical conductors.

???Wear safety glasses when you are hammering, drilling, soldering, cutting wire, attaching springs, using solvents, or working in any other conditions that may be hazardous to your eyes.

???After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device that is worn or defective.

???Reinstall all covers correctly before returning the machine to the customer.

???Fan louvers on the machine help to prevent the overheating of internal components. Do not obstruct fan louvers or cover them with labels or stickers.

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Safety information

Electrical safety

Observe the following rules when working on electrical equipments.

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 fibers to decrease electrostatic discharges. Do not use such kind of mat to protect yourself from electrical shock.

???Find the room emergency power-off (EPO) switch, disconnecting the switch or electrical outlet. If an electrical accident occurs, you can then operate the switch or unplug the power cord quickly.

???Do not work alone under hazardous conditions or near the equipment that has hazardous voltages.

???Disconnect all power before:

???Performing a mechanical inspection

???Working near power supplies

???Removing or installing main units

???Before you start to work on the machine, unplug the power cord. If you cannot unplug it, ask the customer to power-off the wall box that supplies power to the machine, and to lock the wall box in the off position.

???If you need to work on a machine that has exposed electrical circuits, observe the following precautions:

???Ensure that another person, familiar with the power-off controls, is near you.

Attention: Another person must be there to switch off the power, if necessary.

???Use only one hand when working with powered-on electrical equipment; keep the other hand in your pocket or behind your back.

Attention: An electrical shock can occur only when there is a complete circuit. By observing the above rule, you may prevent a current from passing through your body.

???When using testers, set the controls correctly and use the approved probe leads and accessories for that tester.

???Stand on suitable rubber mats (obtained locally, if necessary) to insulate you from grounds such as metal floor strips and machine frames.

Observe the special safety precautions when you work with very high voltages; instructions for these precautions are in the safety sections of maintenance information. Be extremely careful when you measure the high voltages.

???Regularly inspect and maintain your electrical hand tools for safe operational condition.

???Do not use worn or broken tools and testers.

???Never assume that power has been disconnected from a circuit. First, check it to make sure that it has been powered off.

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Lenovo IdeaTab A2107A Hardware Maintenance Manual

???Always look carefully for possible hazards in your work area. Examples of these hazards are moist floors, nongrounded power extension cables, power surges, and missing safety grounds.

???Do not touch live electrical circuits with the reflective surface of a plastic dental mirror. The surface is conductive; such touching can cause personal injury and machine damage.

???Do not service the following parts with the power on when they are removed from their normal operating places in a machine:

???Power supply units

???Pumps

???Blowers and fans

???Motor generators

and similar units. (This practice ensures correct grounding of the units.)

???If an electrical accident occurs:

???Caution: do not become a victim yourself.

???Switch off the power.

???Send the victim to get medical aid.

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Safety information

Safety inspection guide

The purpose of this inspection guide is to assist you in identifying potential unsafe conditions. As each machine was designed and built, required safety items were installed to protect users and service personnel from injury. This guide addresses only those items. You should use good judgment to identify potential safety hazards according to the attachment of non-Lenovo features or options not covered by this inspection guide.

If any unsafe conditions are present, you must determine how serious the apparent hazard could be and whether you can continue without first correcting the problem.

Consider these conditions and the safety hazards they present:

???Electrical hazards, especially primary power (primary voltage on the frame can cause serious or fatal electrical shock)

???Explosive hazards, such as a damaged CRT face or a bulging capacitor

???Mechanical hazards, such as loose or missing hardware

To determine whether there are any potential unsafe conditions, use the following checklist at the beginning of every service task. Begin the checks with the power off, and the power cord disconnected.

Checklist:

1.Check exterior covers for damage (loose, broken, or sharp edges).

2.Turn off the computer. Disconnect the power cord.

3.Check the power cord for:

a.A third-wire ground connector in good condition. Use a meter to measure third-wire ground continuity for 0.1 ohm or less between the external ground pin and the frame ground.

b.The power cord should be the type specified in the parts list.

c.Insulation must not be frayed or worn.

4.Check for cracked or bulging batteries.

5.Remove the cover.

6.Check for any obvious non-Lenovo alterations. Use good judgment as to the safety of any non-Lenovo alterations.

7.Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage.

8.Check for worn, frayed, or pinched cables.

9.Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with.

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Lenovo IdeaTab A2107A Hardware Maintenance Manual

Handling devices that are sensitive to electrostatic discharge

Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to electrostatic discharge (ESD). ESD damage can occur when there is a difference in charge between objects. Protect against ESD damage by equalizing the charge so that the machine, the part, the work mat, and the person handling the part are all at the same charge.

Notes:

1.Use product-specific ESD procedures when they exceed the requirements noted here.

2.Make sure that the ESD protective devices you use have been certified (ISO 9000) as fully effective.

When handling ESD-sensitive parts:

???Keep the parts in protective packages until they are inserted into the product.

???Avoid contact with other people.

???Wear a grounded wrist strap against your skin to eliminate static on your body.

???Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even when you are wearing a wrist strap.

???Use the black side of a grounded work mat to provide a static-free work surface. The mat is especially useful when handling ESD-sensitive devices.

???Select a grounding system, such as those listed below, to provide protection that meets the specific service requirement.

Notes:

The use of a grounding system to guard against ESD damage is desirable but not necessary.

???Attach the ESD ground clip to any frame ground, ground braid, or green- wire ground.

???When working on a double-insulated or battery-operated system, use an ESD common ground or reference point. You can use coax or connector- outside shells on these systems.

???Use the round ground prong of the ac plug on ac-operated computers.

Grounding requirements

Electrical grounding of the computer is required for operator safety and correct system function. Proper grounding of the electrical outlet can be verified by a certified electrician.

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Safety information

Safety notices: multilingual translations

The safety notices in this section are provided in English, French, German,

Hebrew, Italian, Japanese, and Spanish.

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 flakes can cause electrical shorts.

Avant de remettre l???ordinateur sous tension apr??s remplacement d???une unit?? en client??le, v??rifiez que tous les ressorts, vis et autres pi??ces sont bien en place et bien fix??es. Pour ce faire, secouez l???unit?? et assurez-vous qu???aucun bruit suspect ne se produit. Des pi??ces m??talliques ou des copeaux de m??tal pourraient causer un court-circuit.

Bevor nach einem FRU-Austausch der Computer wieder angeschlossen wird, mu?? sichergestellt werden, da?? keine Schrauben, Federn oder andere Kleinteile fehlen oder im Geh??use vergessen wurden. Der Computer mu?? gesch??ttelt und auf Klapperger??usche gepr??ft werden. Metallteile oder- splitter k??nnen Kurzschl??sse erzeugen.

Prima di accendere l???elaboratore dopo che ?? stata effettuata la sostituzione di una FRU, accertarsi che tutte le viti, le molle e tutte le altri parti di piccole dimensioni siano nella corretta posizione e non siano sparse all???interno dell???elaboratore. Verificare ci?? 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 dem??s piezas peque??as se encuentran en su sitio y no se encuentran sueltas dentro del sistema. Compru??belo agitando el sistema y escuchando los posibles ruidos que provocar??an. Las piezas met??licas pueden causar cortocircuitos el??ctricos.

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Lenovo IdeaTab A2107A 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 d??montez pas, ne les rechargez pas, ne les exposez ni au feu ni ?? l???eau. Ne les mettez pas en court-circuit. Pour les mettre au rebut, conformez-vous ?? la r??glementation en vigueur. Lorsque vous remplacez la pile de sauvegarde ou celle de l???horloge temps r??el, veillez ?? n???utiliser que les mod??les cit??s dans la liste de pi??ces d??tach??es ad??quate. Une batterie ou une pile inappropri??e 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 ??rtlichen Bestimmungen f??r Sonderm??ll beachten. Beim Ersetzen der Bereitschafts-oder Systembatterie nur Batterien des Typs verwenden, der in der Ersatzteilliste aufgef??hrt ist. Der Einsatz falscher Batterien kann zu Entz??ndung oder Explosion f??hren.

Alcune batterie di riserva contengono una piccola quantit?? di nichel e cadmio. Non smontarle, ricaricarle, gettarle nel fuoco o nell???acqua n?? 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 bater??as de reserva contienen una peque??a cantidad de n??quel y cadmio. No las desmonte, ni recargue, ni las eche al fuego o al agua ni las cortocircuite. Des??chelas tal como dispone la normativa local. Utilice s??lo bater??as que se encuentren en la lista de piezas. La utilizaci??n de una bater??a no apropiada puede provocar la ignici??n o explosi??n de la misma.

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Safety information

Safety notice 3

DANGER

The battery pack contains small amounts of nickel. Do not disassemble it, throw it into fire 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 d??montez pas, ne l???exposez ni au feu ni ?? l???eau. Ne la mettez pas en court-circuit. Pour la mettre au rebut, conformez-vous ?? la r??glementation en vigueur. Lorsque vous remplacez la batterie, veillez ?? n???utiliser que les mod??les cit??s dans la liste de pi??ces d??tach??es ad??quate. En effet, une batterie inappropri??e risque de prendre feu ou d???exploser.

Akkus enthalten geringe Mengen von Nickel. Sie d??rfen nicht zerlegt, wiederaufgeladen, kurzgeschlossen, oder Feuer oder Wasser ausgesetzt werden. Bei der Entsorgung die ??rtlichen Bestimmungen f??r Sonderm??ll beachten. Beim Ersetzen der Batterie nur Batterien des Typs verwenden, der in der Ersatzteilliste aufgef??hrt ist. Der Einsatz falscher Batterien kann zu Entz??ndung oder Explosion f??hren.

La batteria contiene piccole quantit?? di nichel. Non smontarla, gettarla nel fuoco o nell???acqua n?? 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 bater??as contienen peque??as cantidades de n??quel. No las desmonte, ni recargue, ni las eche al fuego o al agua ni las cortocircuite. Des??chelas tal como dispone la normativa local. Utilice s??lo bater??as que se encuentren en la lista de piezas al sustituir la bater??a. La utilizaci??n de una bater??a no apropiada puede provocar la ignici??n o explosi??n de la misma.

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Lenovo IdeaTab A2107A Hardware Maintenance Manual

Safety notice 4

DANGER

The lithium battery can cause a fire, 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 pr??sente des risques d???incendie, d???explosion ou de br??lures graves. Ne la rechargez pas, ne retirez pas son connecteur polaris?? et ne la d??montez pas. Ne l???exposez pas ?? une temperature sup??rieure ?? 100??C, ne la faites pas br??ler et n???en exposez pas le contenu ?? l???eau. Mettez la pile au rebut conform??ment ?? la r??glementation en vigueur. Une pile inappropri??e risque de prendre feu ou d???exploser.

Die Systembatterie ist eine Lithiumbatterie. Sie kann sich entz??nden, explodieren oder schwere Verbrennungen hervorrufen. Batterien dieses Typs d??rfen nicht aufgeladen, zerlegt, ??ber 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 ??rtlichen Bestimmungen f??r Sonderm??ll beachten. Beim Ersetzen der Batterie nur Batterien des Typs verwenden, der in der Ersatzteilliste aufgef??hrt ist. Der Einsatz falscher Batterien kann zu Entz??ndung oder Explosion f??hren.

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 bater??a de repuesto es una bater??a 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. Des??chela tal como dispone la normativa local.

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Safety information

Safety notice 5

If the LCD breaks and the fluid from inside the LCD gets into your eyes or on your hands, immediately wash the affected areas with water at least for 15 minutes. Seek medical care if any symptoms caused by the fluid are present after washing.

Si le panneau d???affichage ?? 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 m??decin si des sympt??mes persistent apr??s le lavage.

Die Leuchtstoffr??hre im LCD-Bildschirm enth??lt Quecksilber. Bei der Entsorgung die ??rtlichen Bestimmungen f??r Sonderm??ll beachten. Der LCD-Bildschirm besteht aus Glas und kann zerbrechen, wenn er unsachgem???? behandelt wird oder der Computer auf den Boden f??llt. Wenn der Bildschirm besch??digt ist und die darin befindliche Fl??ssigkeit in Kontakt mit Haut und Augen ger??t, sollten die betroffenen Stellen mindestens 15 Minuten mit Wasser abgesp??lt und bei Beschwerden anschlie??end 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 fluido de su interior entra en contacto con sus ojos o sus manos, lave inmediatamente las ??reas afectadas con agua durante

15 minutos como m??nimo. Obtenga atenci??n medica si se presenta alg??n

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Lenovo IdeaTab A2107A 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.

Afin d?????viter tout risque de choc ??lectrique, ne retirez pas le cache en plastique prot??geant la partie inf??rieure de la carte d???alimentation.

Aus Sicherheitsgr??nden 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 pl??stico 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 ??lev??, le court-circuit ou la mise ?? la masse d???une batterie peut produire suffisamment de courant pour br??ler des mat??riaux combustibles ou causer des br??lures corporelles graves.

Obwohl Hauptbatterien eine niedrige Spannung haben, k??nnen sie doch bei Kurzschlu?? oder Erdung genug Strom abgeben, um brennbare Materialien zu entz??nden oder Verletzungen bei Personen hervorzurufen.

Sebbene le batterie di alimentazione siano a basso voltaggio, una batteria in corto circuito o a massa pu?? fornire corrente sufficiente da bruciare materiali combustibili o provocare ustioni ai tecnici di manutenzione.

Aunque las bater??as principales tienen un voltaje bajo, una bater??a cortocircuitada o con contacto a tierra puede producir la corriente suficiente 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 unit?? rempla??able en client??le, mettez le syst??me hors tension, d??branchez tous les cordons d???alimentation des socles de prise de courant, retirez la batterie et d??connectez tous les cordons d???interface.

Die Stromzufuhr mu?? 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 el??ctrica, quite la bater??a y, a continuaci??n, desconecte cualquier cable de conexi??n entre dispositivos.

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Lenovo IdeaTab A2107A Hardware Maintenance Manual

Laser compliance statement

Some models of Lenovo computer are equipped from the factory with an optical storage device such as a CD-ROM drive or a DVD-ROM drive. Such devices are also sold separately as options. If one of these drives is installed, it is certified in the U.S. to conform to the requirements of the Department of Health and Human Services 21 Code of Federal Regulations (DHHS 21 CFR) Subchapter J for Class 1 laser products. Elsewhere, the drive is certified to conform to the requirements of the International Electrotechnical Commission (IEC) 825 and CENELEC EN 60 825 for Class 1 laser products.

If a CD-ROM drive, a DVD-ROM drive, or another laser device is installed, note the following:

CAUTION

Use of controls or adjustments or performance of procedures other than those specified herein might result in hazardous radiation exposure.

O uso de controles, ajustes ou desempenho de procedimentos diferentes daqueles aqui especificados pode resultar em perigosa exposi????o ?? radia????o.

Pour ??viter tout risque d???exposition au rayon laser, respectez les consignes de r??glage et d???utilisation des commandes, ainsi que les proc??dures d??crites.

Werden Steuer- und Einstellelemente anders als hier festgesetzt verwendet, kann gef??hrliche Laserstrahlung auftreten.

L???utilizzo di controlli, regolazioni o l???esecuzione di procedure diverse da quelle specificate possono provocare l???esposizione a.

El uso de controles o ajustes o la ejecuci??n de procedimientos distintos de los aqu?? especificados puede provocar la exposici??n a radiaciones peligrosas.

Opening the CD-ROM drive, the DVD-ROM drive, or any other optical storage device could result in exposure to hazardous laser radiation. There are no serviceable parts inside those drives. Do not open.

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Safety information

A CD-ROM drive, a DVD-ROM drive, or any other storage device installed may contain an embedded Class 3A or Class 3B laser diode. Note the following:

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.

Radia????o por raio laser ao abrir. N??o olhe fixo no feixe de luz, n??o olhe diretamente por meio de instrumentos ??ticos e evite exposi????o direta com o feixe de luz.

Rayonnement laser si carter ouvert. ??vitez de fixer le faisceau, de le regarder directement avec des instruments optiques, ou de vous exposer au rayon.

Laserstrahlung bei ge??ffnetem Ger??t. Nicht direkt oder ??ber optische Instrumente in den Laserstrahl sehen und den Strahlungsbereich meiden.

Kinyit??skor l??zersug??r ! Ne n??zzen bele se szabad szemmel, se optikai eszk??z??kkel. Ker??lje a sug??rnyal??bbal val?? ??rintkez??st!

Aprendo l???unit?? vengono emesse radiazioni laser. Non fissare il fascio, non guardarlo direttamente con strumenti ottici e evitare l???esposizione diretta al fascio.

Radiaci??n l??ser al abrir. No mire fijamente ni examine con instrumental ??ptico el haz de luz. Evite la exposici??n directa al haz.

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Important service information

This chapter presents the following important service information:

??????Strategy for replacing FRUs??? on page 16

??? ???Important notice for replacing a system board??? on page 17

??????Important information about replacing RoHS compliant FRUs??? on page 18

Important:

BIOS and device driver fixes are customer-installable. The BIOS and device drivers are posted on the customer support site: http://consumersupport.lenovo.com/.

Strategy for replacing FRUs

Before replacing parts:

Make sure that all software fixes, drivers, and BIOS downloads are installed before replacing any FRUs listed in this manual.

After a system board is replaced, ensure that the latest BIOS is loaded to the system board before completing the service action.

To download software fixes, drivers, and BIOS, follow the steps below:

1.Go to http://consumersupport.lenovo.com/.

2.Enter a serial number or select a product or use Lenovo smart downloading.

3.Select the BIOS/Driver/Applications and download.

4.Follow the directions on the screen and install the necessary software.

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Important service information

Use the following strategy to prevent unnecessary expense for replacing and servicing FRUs:

???If you are instructed to replace an FRU, but the replacement does not solve the problem, reinstall the original FRU before you continue.

???Some computers have both a processor board and a system board. If you are instructed to replace either of them, and replacing one of them does not solve the problem, reinstall that board, and then replace the other one.

???If an adapter or a device consists of more than one FRU, any of the FRUs may be the cause of the error. Before replacing the adapter or device, remove the FRUs one by one to see if the symptoms change. Replace only the FRU that changed the symptoms.

Attention: The setup configuration on the computer you are servicing may have been customized. Running Automatic Configuration may alter the settings. Note the current configuration settings (using the View Configuration option); then, when service has been completed, verify that those settings remain in effect.

Important notice for replacing a system board

Some components mounted on a system board are very sensitive. Improper handling can cause damage to those components, and may cause a system malfunction.

Attention: When handling a system board:

???Do not drop the system board or apply any excessive force to it.

???Avoid rough handling of any kind.

???Avoid bending the system board and hard pushing to prevent cracking at each BGA (Ball Grid Array) chipset.

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Lenovo IdeaTab A2107A Hardware Maintenance Manual

Important information about replacing RoHS compliant FRUs

RoHS, The Restriction of Hazardous Substances in Electrical and Electronic Equipment Directive (2002/95/EC) is a European Union legal requirement affecting the global electronics industry. RoHS requirements must be implemented on Lenovo products placed on the market after June 2006. Products on the market before June 2006 are not required to have RoHS compliant parts. If the original FRU parts are non-compliant, replacement parts can also be non-compliant. In all cases if the original FRU parts are RoHS compliant, the replacement part must also be RoHS compliant.

Note: RoHS and non-RoHS FRU part numbers with the same fit and function are identified with unique FRU part numbers.

Lenovo plans to transit to RoHS compliance well before the implementation date and expects its suppliers to be ready to support Lenovo???s requirements and schedule in the EU. Products sold in 2005 and 2006 will contain some RoHS compliant FRUs. The following statement pertains to these products and any product Lenovo produces containing RoHS compliant FRUs.

RoHS compliant FRUs have unique FRU part numbers. Before or after the RoHS implementation date, failed RoHS compliant parts must always be replaced with RoHS compliant ones, so only the FRUs identified as compliant in the system HMM or direct substitutions for those FRUs may be used.

Note: A direct substitution is a part with a different FRU part number that is automatically shipped by the distribution center at the time of the order.

18

General checkout

General checkout

This chapter presents the following information:

??????What to do first??? on page 20

??????Power system checkout??? on page 21

Before you go to the checkout, make sure to read the following important notes:

Important notes:

???Only certified trained personnel can service the computer.

???Before replacing any FRU, read the entire page on removing and replacing FRUs.

???When you replace FRUs, use new nylon-coated screws.

???Be extremely careful during such write operations as copying, saving, or formatting. Drives in the computer that you are servicing sequence might have been altered. If you select an incorrect drive, data or programs might be overwritten.

???Replace an FRU only with another FRU of the correct model. When you replace an FRU, make sure that the machine model and the FRU part number are correct by referring to the FRU parts list.

???An FRU should not be replaced just because of a single, unreproducible failure. Single failures can occur for a variety of reasons that have nothing to do with a hardware defect, such as cosmic radiation, electrostatic discharge, or software errors. Consider replacing an FRU only when a problem recurs. If you suspect that an FRU is defective, clear the error logs and run the test again. If the error does not recur, do not replace the FRU.

???Be careful not to replace a nondefective FRU.

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Lenovo IdeaTab A2107A Hardware Maintenance Manual

What to do first

When you do return an FRU, you must include the following information in the parts exchange form or parts return form that you attach to it:

1.Name and phone number of servicer

2.Date of service

3.Date on which the machine failed

4.Date of purchase

5.Procedure index and page number in which the failing FRU was detected

6.Failing FRU name and part number

7.Machine type, model number, and serial number

8.Customer???s name and address

Note for warranty: During the warranty period, the customer may be responsible for repair costs if the computer damage was caused by misuse, accident, modification, unsuitable physical or operating environment, or improper maintenance by the customer.

The following is a list of some common items that are not covered under warranty and some symptoms that might indicate that the system was subjected to stress beyond normal use.

Before checking problems with the computer, determine whether the damage is covered under the warranty by referring to the following list:

The following are not covered under warranty:

???LCD panel cracked from the application of excessive force or from being dropped

???Scratched (cosmetic) parts

???Distortion, deformation, or discoloration of the cosmetic parts

???Plastic parts, latches, pins, or connectors that have been cracked or broken by excessive force

???Damage caused by liquid spilled into the system

???Damage caused by the improper insertion of a PC Card or the installation of an incompatible card

???Improper disk insertion or use of an optical drive

???Diskette drive damage caused by pressure on the diskette drive cover, foreign material in the drive, or the insertion of a diskette with multiple labels

???Damaged or bent diskette eject button

???Fuses blown by attachment of a nonsupported device

???Forgotten computer password (making the computer unusable)

???Sticky keys caused by spilling a liquid onto the keyboard

???Use of an incorrect AC adapter on laptop products

The following symptoms might indicate damage caused by nonwarranted activities:

???Missing parts might be a symptom of unauthorized service or modification.

???If the spindle of a hard disk drive becomes noisy, it may have been subjected to excessive force, or dropped.

20

General checkout

Power system checkout

To verify a symptom, follow the steps below:

1.Turn off the computer.

2.Remove the battery pack.

3.Connect the AC adapter.

4.Make sure that power is supplied when you turn on the computer.

5.Turn off the computer.

6.Disconnect the AC adapter and install the charged battery pack.

7.Make sure that the battery pack supplies power when you turn on the computer.

If you suspect a power problem, see the appropriate one of the following power supply checkouts:

??????Checking the IdeaTab AC Charger??? on page 21

??????Checking the internal battery status??? on page 21

Checking the IdeaTab AC Charger

When you use the IdeaTab AC Charger to charge the tablet but no power is charged, see the instructions in this topic to check the IdeaTab AC Charger.

To check the IdeaTab AC Charger, do the following:

1.Disconnect the micro-USB cable from the tablet.

2.Measure the output voltage across the connector marked B of the micro-USB cable. Refer to the following figure:

Note: The output voltage across pin 3 of the micro-B connector might be different from the one you are servicing.

3.If the voltage is not correct, replace the micro-USB cable.

4.If the voltage is acceptable, replace the system board.

Checking the internal battery status

To check the battery status of the tablet, do either of the following:

???Approximate information about the battery status

Get the approximate status of the battery at any time by checking the battery status icon on the system bar in the upper-right corner of the screen. The shorter the green bar is, the less the battery power remains.

???Accurate information about the battery status

To get the accurate information about the battery status of the tablet, do the following:

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Lenovo IdeaTab A2107A Hardware Maintenance Manual

1.Open the Android Settings screen.

To open the Android Settings screen, do either of the following:

???From the main Home screen, touch the Android Settings icon on Lenovo Launch Zone. The Android Settings screen is displayed.

???Touch the application icon from the action bar and then touch Settings. The Android Settings screen is displayed.

2.Touch About Tablet on the Android Settings screen.

3.Touch Status to view the accurate percentage of the remaining battery power. You also can touch Battery use to check what applications are consuming battery power.

22

Related service information

Related service information

This chapter presents the following information:

??????Security??? on page 23

??????Power management??? on page 23

Security

Security settings include: SCREEN SECURITY, SIM CARD LOCK (3G version only), PASSWORDS, DEVICE ADMINISTRATION and CREDENTIAL

STORAGE.

Power management

Note: Power management modes are not supported for APM operating system.

To reduce power consumption, the computer has three power management modes: screen blank, sleep (standby), and hibernation.

Activating/Deactivating the Display

With the display deactivated, press the Power button on the IdeaTab to activate the display. The IdeaTab's display will then illuminate, indicating that it has been activated.

If you do not need to use your IdeaTab temporarily, you can press the Power button to deactivate the display. Your IdeaTab will then enter standby mode to save power.

23

Lenovo IdeaTab A2107A Hardware Maintenance Manual

Lenovo IdeaTab A2107A

This chapter presents the following product-specific service references and product-specific parts information:

??????Specifications??? on page 24

??????FRU replacement notices??? on page 25

??????Removing and replacing an FRU??? on page 26

??????Locations??? on page 38

??????Parts list??? on page 41

Specifications

The following table lists the specifications of the Lenovo IdeaTab A2107A:

Table 1. Specifications

24

Lenovo IdeaTab A2107A

FRU replacement notices

This section presents notices related to removing and replacing parts. Read this section carefully before replacing any FRU.

Screw notices

Loose screws can cause a reliability problem. In the Lenovo computer, this problem is addressed with special nylon-coated screws that have the following characteristics:

???They maintain tight connections.

???They do not easily come loose, even with shock or vibration.

???They are harder to tighten.

???Each one should be used only once.

Do the following when you service this machine:

???Keep the screw kit in your tool bag.

???Always use new screws.

???Use a torque screwdriver if you have one.

Tighten screws as follows:

???Plastic to plastic

Turn an additional 90?? after the screw head touches the surface of the plastic part:

more than 90??

(Cross-section)

???Logic card to plastic

Turn an additional 180?? after the screw head touches the surface of the logic card:

more than 180??

(Cross-section)

???Torque driver

If you have a torque screwdriver , refer to the ???Torque??? column for each step.

???Make sure that you use the correct screws. If you have a torque screwdriver, tighten all screws firmly to the torque shown in the table. Never use a screw that you removed. Use a new one. Make sure that all screws are tightened firmly.

???Ensure torque screwdrivers are calibrated correctly following country specifications.

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Lenovo IdeaTab A2107A Hardware Maintenance Manual

Removing and replacing an FRU

This section presents exploded figures with the instructions to indicate how to remove and replace the FRU. Make sure to observe the following general rules:

1.Do not attempt to service any computer unless you have been trained and certified. An untrained person runs the risk of damaging parts.

2.Before replacing any FRU, review ???FRU replacement notices??? on page 25.

3.Begin by removing any FRUs that have to be removed before the failing FRU. Any of such FRUs are listed at the top of the page. Remove them in the order in which they are listed.

4.Follow the correct sequence in the steps to remove the FRU, as given in the figures by the numbers in square callouts.

5.When turning a screw to replace an FRU, turn it in the direction as given by the arrow in the figure.

6.When removing the FRU, move it in the direction as given by the arrow in the figure.

7.To put the new FRU in place, reverse the removal procedures and follow any of the notes that pertain to replacement. For information about connecting and arranging internal cables, see ???Locations??? on page 38.

8.When replacing an FRU, use the correct screw as shown in the procedures.

DANGER

Before removing any FRU, turn off the computer, unplug all power cords from electrical outlets, remove the battery pack, and then disconnect any of the interconnecting cables.

Attention: After replacing an FRU, do not turn on the computer until you have made sure that all screws, springs, and other small parts are in place and none are loose inside the computer. Verify this by shaking the computer gently and listening for rattling sounds. Metallic parts or metal flakes can cause electrical short circuits.

Attention: The system board is sensitive to, and can be damaged by, electrostatic discharge. Before touching it, establish personal grounding by touching a ground point with one hand or using an electrostatic discharge (ESD) strap (P/N 6405959) to remove potential shock reasons.

26

Lenovo IdeaTab A2107A

1010 SIM card cover

Figure 1. Removal steps of SIM card cover

Push the SIM card cover forward with two thumbs in the direction shown by arrow a.

a

27

Lenovo IdeaTab A2107A Hardware Maintenance Manual

1020 Battery pack

DANGER

Only use the battery specified in the parts list for your computer. Any other battery could ignite or explode.

For access, remove this FRU:

??? ???1010 SIM card cover??? on page 27

Figure 2. Removal steps of battery pack

Remove screw a and push the battery pack backward in the direction shown by arrow b.

a

b

28

Lenovo IdeaTab A2107A

1030 Base cover

For access, remove these FRUs in order:

??????1010 SIM card cover??? on page 27

??????1020 Battery pack??? on page 28

Figure 3. Removal steps of base cover

Remove 16 screws a on the base cover with the screw driver.

Remove the base cover in the direction shown by arrow b.

b

29

Lenovo IdeaTab A2107A Hardware Maintenance Manual

Figure 3. Removal steps of base cover (continued)

Disconnect the battery connector c, insert a flat blade under the bottom right of the battery and carefully pry out the battery in the direction as shown below.

c

30

Lenovo IdeaTab A2107A

1040 Micro SD card

For access, remove these FRUs in order:

??? ???1010 SIM card cover??? on page 27

Figure 4. Removal steps of Micro SD card

Remove the Micro SD card from the card slot in the direction shown by arrows

ab.

a

b

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Lenovo IdeaTab A2107A Hardware Maintenance Manual

1050 System board

Important notices for handling the system board:

When handling the system board, bear the following in mind.

???Be careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or composite.

???Avoid rough handling of any kind.

???In the whole process, make sure not to drop or stack the system board.

???If you put a system board down, make sure to put it only on a padded surface such as an ESD mat or conductive corrugated material.

For access, remove these FRUs in order:

??????1010 SIM card cover??? on page 27

??????1020 Battery pack??? on page 28

??????1030 Base cover??? on page 29

32

Lenovo IdeaTab A2107A

Figure 5. Removal steps of system board

Remove two screws a.

a

a

Peel off the microphone d, vibrator i, speakers j, detach the LCD connector b, touch connector c, USB board connector e, back camera connector f, power button board connector g,volume up/down button connector h.

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Lenovo IdeaTab A2107A Hardware Maintenance Manual

Figure 5. Removal steps of system board (continued)

Remove the system board in the direction shown by arrow k.

k

34

Lenovo IdeaTab A2107A

1060 Back camera

For access, remove these FRUs in order:

??????1010 SIM card cover??? on page 27

??????1020 Battery pack??? on page 28

??????1030 Base cover??? on page 29

Figure 7. Removal steps of back camera

The back camera is stuck to the system board. Remove the back camera from the system board in the direction shown by arrow a.

a

35

Lenovo IdeaTab A2107A Hardware Maintenance Manual

1070 Front camera

For access, remove these FRUs in order:

??????1010 SIM card cover??? on page 27

??????1020 Battery pack??? on page 28

??????1030 Base cover??? on page 29

??????1050 System board??? on page 32

Figure 8. Removal steps of front camera

Detach the front camera connector from the back of the system board in the direction shown by arrow a. Remove the front camera from the system board in the direction shown by arrow b.

36

Lenovo IdeaTab A2107A

1080 USB board

For access, remove these FRUs in order:

??????1010 SIM card cover??? on page 27

??????1020 Battery pack??? on page 28

??????1030 Base cover??? on page 29

??????1050 System board??? on page 32

??????1070 Front camera??? on page 36

Figure 9. Removal steps of USB board

Remove the USB board in the direction shown by arrow a.

a

37

Lenovo IdeaTab A2107A Hardware Maintenance Manual

Locations

Front view

a Front camera

1

38

Lenovo IdeaTab A2107A

Right-side view

a Volume Up/Down

1

39

Lenovo IdeaTab A2107A Hardware Maintenance Manual

Top and back view

aAudio/Mic jack

bData/Power jack

cPower on / Sleep switch

1

2

40

Lenovo IdeaTab A2107A

Parts list

This section presents the following service parts:

??????Overall??? on page 42

??????AC adapters??? on page 44

??????USB Cable??? on page 44

??????Power cords??? on page 45

Notes:

???Each FRU is available for all types or models, unless specific types or models are specified.

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Lenovo IdeaTab A2107A Hardware Maintenance Manual

Overall

3

1

2

4

42

Lenovo IdeaTab A2107A

Table 1. Parts list???Overall

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Lenovo IdeaTab A2107A Hardware Maintenance Manual

AC adapters

Table 2. Parts list???3-pin AC adapters

USB Cable

Table 3. Parts list???USB Cable

44

Lenovo IdeaTab A2107A

Power cords

A Lenovo power cord for a specific country or region is usually available only in that country or region:

Table 4. Parts list???3-pin power cords

45

Lenovo IdeaTab A2107A Hardware Maintenance Manual

Table 4. Parts list???3-pin power cords (continued)

46

Lenovo IdeaTab A2107A

Table 11. Parts list???3-pin power cords (continued)

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Lenovo IdeaTab A2107A Hardware Maintenance Manual

Notices

Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any Lenovo intellectual property right may be used instead. However, it is the user???s responsibility to evaluate and verify the operation of any other product, program, or service.

Lenovo may have patents or pending patent applications covering subject matter described in this document. The furnishing of this document does not give you any license to these patents.

LENOVO GROUP LTD. PROVIDES THIS PUBLICATION ???AS IS??? WITHOUT

WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING,

BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF NON-

INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do not allow disclaimer of express or implied warranties in certain transactions, therefore, this statement may not apply to you.

This information could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. Lenovo may make improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time without notice.

The products described in this document are not intended for use in implantation or other life support applications where malfunction may result in injury or death to persons. The information contained in this document does not affect or change Lenovo product specifications or warranties. Nothing in this document shall operate as an express or implied license or indemnity under the intellectual property rights of Lenovo or third parties. All information contained in this document was obtained in specific environments and is presented as an illustration. The result obtained in other operating environments may vary.

Lenovo may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you.

Any references in this publication to non-Lenovo Web sites are provided for convenience only and do not in any manner serve as an endorsement of those Web sites. The materials at those Web sites are not part of the materials for this Lenovo product, and use of those Web sites is at your own risk.

48

Notices

Any performance data contained herein was determined in a controlled environment. Therefore, the result obtained in other operating environments may vary significantly. Some measurements may have been made on development-level systems and there is no guarantee that these measurements will be the same on generally available systems. Furthermore, some measurements may have been estimated through extrapolation. Actual results may vary. Users of this document should verify the applicable data for their specific environment.

Trademarks

The following terms are either registered trademarks or trademarks of Lenovo in the United States and/or other countries:

Lenovo?? Lenovo logo?? IdeaPad?? VeriFace??

OneKey Rescue?? (OneKey Recovery, OneKey Antivirus) APS??

Power Express??

Energy Management and ReadyComm??

The following terms are trademarks of Microsoft Corporation in the United States, other countries, or both:

Windows??

Windows?? 7

The following are trademarks of Intel Corporation or its subsidiaries in the United States, other countries, or both:

Intel?? Intel??Core??? 2 Duo

Other company, product, or service names may be the trademarks or service marks of others.

49