Power system checkout ........21 Checking the Tab AC Charger ....21 Checking the internal battery status..21 Related service information .......23 Security ............... 23 Power management .......... 23 Activating/Deactivating the Display ..23 Lenovo YOGA BOOK ........24 FRU replacement notices........25 Screw notices..........25 Removing and replacing an FRU....26 1010 Keyboard Assembly......27 1020 Battery ..........29 1030 D‐cover Hinge Stand ......32 1040 A‐cover and Hinge......33 1050 Speaker..........
About this manual This manual contains service and reference information for the following Lenovo product: Lenovo YOGA BOOK 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.
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...
Lenovo YOGA BOOK 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 tool case 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.
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.
Page 8
Lenovo YOGA BOOK 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.
• 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.
Lenovo YOGA BOOK 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 ...
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 après remplacement d’une unité en clientèle, vérifiez que tous les ressorts, vis et autres pièces sont bien en place et bien fixées. 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. Verificare 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.
Page 12
Lenovo YOGA BOOK 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.
Page 13
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 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.
Page 14
Lenovo YOGA BOOK 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 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.
Page 15
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 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 fluido 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 ...
Page 16
Lenovo YOGA BOOK 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’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 suffisamment 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 suficiente como para quemar material combustible o provocar quemaduras en el personal.
Page 17
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.
Lenovo YOGA BOOK 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 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 specificate possono provocare l’esposizione a. El uso de controles o ajustes o la ejecución de procedimientos distintos de los aquí especificados puede provocar la exposición 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.
Page 19
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. Radiação por raio laser ao abrir. Não olhe fixo 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 fijamente ni examine con instrumental óptico el haz de luz. Evite la exposición directa al haz.
Lenovo YOGA BOOK Hardware Maintenance Manual Important service information This chapter presents the following important service information: • “Strategy for replacing FRUs” on page 16 – “Important notice for replacing a main 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://support.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 main board is replaced, ensure that the latest BIOS is loaded to the main board before completing the service action. To download software fixes, drivers, and BIOS, follow the steps below: 1. Go to http://support.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.
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 main 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 main board Some components mounted on a main board are very sensitive. Improper handling can cause damage to those components, and may cause a system malfunction. Attention: When handling a main board: • Do not drop the main board or apply any excessive force to it. • Avoid rough handling of any kind. • Avoid bending the main board and hard pushing to prevent cracking at each BGA (Ball Grid Array) chipset.
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.
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. •...
Lenovo YOGA BOOK 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: •...
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 Tab AC Charger” on page 21 • “Checking the internal battery status” on page 21 Checking the Tab 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: 3 (5V) Voltage (V dc)
Page 26
Lenovo YOGA BOOK 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.
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 tablet to activate the display. The display will then illuminate, indicating that it has been activated. If you do not need to use your tablet temporarily, you can press the Power button to deactivate the display. Your tablet will then enter standby mode to save power.
Lenovo YOGA BOOK Hardware Maintenance Manual Lenovo YOGA BOOK This chapter presents the following product‐specific service references and product‐specific parts information: • “FRU replacement notices” on page 25 • “Removing and replacing an FRU” on page 26 • “Locations” on page 53 • “Parts list” on page 54...
Lenovo YOGA BOOK 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. • Carefully remove screws for reuse when replacing FRUs. • 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 ...
Lenovo YOGA BOOK 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 53. 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 ...
Lenovo YOGA BOOK 1010 Keyboard Assembly Figure 1. Removal steps of Keyboard assembly Heat the 5mm adhesive surface to 60‐70°C all the way around for about ten minutes. Place suction cups in the position shown in the photo and slowly lift up the secondary display TP. Once there is a gap, insert the piece for disassembly to 5mm. Do this on all four sides to open it up, and then lift up the secondary display.
Page 32
Lenovo YOGA BOOK Hardware Maintenance Manual Figure 1. Removal steps of Keyboard assembly (continued) Remove the black Mylar. Use tweezers to disconnect the Keyboard assembly and the main board connected to the FPC interface. Gently pull the FPC, so the main board and the Keyboard assembly are completely separated. Note: 1. The power key’s FPC can be easily broken in disassembly. 2. When open, the right side of the motor and the EMR are bonded together. Be careful not to break the motor’s lead wire. 3. The Keyboard assembly’s FPC connector is located on the top left side. Remember that slow disassembly is required so as not to damage the FPC. ...
Lenovo YOGA BOOK 1020 Battery 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 Keyboard Assembly” on page 27 Figure 2. Removal steps of battery Use a screwdriver to remove the black screws from the battery’s silver sheeting, then remove the sheeting. Step Screw (quantity) Color Torque M1.4X2.5 (1) Black 0.7N Use tweezers to open the interface between the battery FPC and the main board. ...
Page 34
Lenovo YOGA BOOK Hardware Maintenance Manual Figure 2. Removal steps of battery (continued) Use a blade to pry open the black cover on either side of the battery, and remove the covers. Note: There is adhesive under the covers. When separating, be careful not to damage the cover or the components.
Page 35
Lenovo YOGA BOOK Figure 2. Removal steps of battery (continued) After the covers are completely separated, you will see four pieces of blue adhesive. Pull out the four pieces of adhesive, and gently remove the battery. ...
Lenovo YOGA BOOK Hardware Maintenance Manual 1030 D-cover Hinge Stand For access, remove these FRUs in order: • “1010 Keyboard Assembly” on page 27 • “1020 Battery” on page 29 Figure 3. Removal steps of D‐cover hinge stand Use a screwdriver to remove the 11 screws in the stand, and remove the D‐cover hinge stand. Step Screw (quantity) Color Torque M1.4X2.5 (11) Black 0.7N...
Lenovo YOGA BOOK 1040 A-cover and Hinge For access, remove these FRUs in order: • “1010 Keyboard Assembly” on page 27 • “1020 Battery” on page 29 • “1030 D‐cover Hinge Stand” on page 32 Figure 4. Removal steps of A‐cover and hinge Remove the black Mylar and the silver conductive material on the interfaces of the two cables connecting the A‐cover and the D‐cover. Disconnect the two cable interfaces, and gently pull the cable out.
Page 38
Lenovo YOGA BOOK Hardware Maintenance Manual Figure 4. Removal steps of A‐cover and hinge (continued) Use the card pin to remove the card slot. Use a screwdriver to remove the 4 black screws on the card slot bracket, and remove the USB‐SD‐Frame. Step Screw (quantity) Color Torque M1.4X2.5 (4) Black 0.7N...
Page 39
Lenovo YOGA BOOK Figure 4. Removal steps of A‐cover and hinge (continued) Use a screwdriver to remove the 9 black screws from the hinge lock on the D‐cover, as well as the 1 black screw from the silver Earphone‐SUS‐Frame‐R. Remove the Earphone‐SUS‐Frame‐R. Step Screw (quantity) Color Torque M1.4*4*1.9 (9) Black 0.7N M1.4*2.5 (1) Black 0.7N Remove the hinge and A‐cover components from the D‐cover.
Lenovo YOGA BOOK Hardware Maintenance Manual 1050 Speaker For access, remove these FRUs in order: • “1010 Keyboard Assembly” on page 27 • “1020 Battery” on page 29 • “1030 D‐cover Hinge Stand” on page 32 • “1040 A‐cover and Hinge” on page 33 Figure 5. Removal steps of speaker Use a screwdriver to remove the 2 black screws from the silver sheeting, and remove the sheeting. Step Screw (quantity) Color Torque M1.4*2.5 (2) Black 0.7N Remove the transparent yellow Mylar.
Page 41
Lenovo YOGA BOOK Figure 5. Removal steps of speaker (continued) Disconnect the interface between the speakers (left and right) and the main board.
Page 42
Lenovo YOGA BOOK Hardware Maintenance Manual Figure 5. Removal steps of speaker (continued) Use a screwdriver to remove the black screws from the left and right speaker boxes, then remove the speaker boxes. Step Screw (quantity) Color Torque M1.4*2.5 (4) Black 0.7N...
Lenovo YOGA BOOK 1060 USB FPC For access, remove these FRUs in order: • “1010 Keyboard Assembly” on page 27 • “1020 Battery” on page 29 • “1030 D‐cover Hinge Stand” on page 32 • “1040 A‐cover and Hinge” on page 33 • “1050 Speaker” on page 36 Figure 6. Removal steps of USB FPC Remove the black Mylar on the interface of the USB FPC and the main board. Then disconnect the interface between the FPC and the main board, and pull the FPC out of the interface.
Page 44
Lenovo YOGA BOOK Hardware Maintenance Manual Figure 6. Removal steps of USB FPC (continued) Use a blade to scratch the glue off the FPC reinforcement and the side wall of the housing. Then remove the entire component. Note: Be careful not to damage the FPC component when scratching off the glue.
Lenovo YOGA BOOK 1070 Sub Board For access, remove these FRUs in order: • “1010 Keyboard Assembly” on page 27 • “1020 Battery” on page 29 Figure 7. Removal steps of sub board Use a screwdriver to remove the 11 silver screws from the DIV WIFI1&GPS ANT Stand and the WIFI2&Main ANT Stand. Then remove these two ANT Stands. Step Screw (quantity) Color Torque M1.4*2.5*1.7 (11) Silver 0.7N...
Page 46
Lenovo YOGA BOOK Hardware Maintenance Manual Figure 7. Removal steps of sub board (continued) Use tweezers to gently pull the cable heads from the interfaces of the 4 sub boards, and slowly guide the cables out the narrow cable pathways. Be careful not to damage the cables. Disconnect the ANT FPC and MAIN SB interface, pulling the FPC out of the interface. Use a screwdriver to remove the silver screws of the 4 sub boards and respectively dismantle the 4 sub boards.
Page 47
Lenovo YOGA BOOK Figure 7. Removal steps of sub board (continued) Step Screw (quantity) Color Torque D4.0*M1.4*1.60 (6) Silver 0.7N...
Lenovo YOGA BOOK Hardware Maintenance Manual 1080 Camera For access, remove these FRUs in order: • “1010 Keyboard Assembly” on page 27 • “1020 Battery” on page 29 • “1050 Speaker” on page 36 Figure 8. Removal steps of camera Use tweezers to disconnect the FPC and main board interface of the camera. Pull the FPC from the interface and remove the camera component.
Lenovo YOGA BOOK 1090 EP FPC For access, remove these FRUs in order: • “1010 Keyboard Assembly” on page 27 • “1020 Battery” on page 29 • “1050 Speaker” on page 36 Figure 9. Removal steps of EP FPC Use tweezers to disconnect the EP FPC and motherboard interface. Gently pry out the headphone jack component. Then gently grip the component and pull. Pull the FPC from the interface, and remove the component.
Lenovo YOGA BOOK Hardware Maintenance Manual 1100 SK FPC For access, remove these FRUs in order: • “1010 Keyboard Assembly” on page 27 • “1020 Battery” on page 29 • “1050 Speaker” on page 36 Figure 10. Removal steps of SK FPC Use tweezers to disconnect the SK FPC and main board interface. Pull the FPC from the interface. Use tweezers to pull the silver key piece out of the slot.
Page 51
Lenovo YOGA BOOK Figure 10. Removal steps of SK FPC (comtinued) Use tweezers to remove the black volume key.
Lenovo YOGA BOOK Hardware Maintenance Manual 1110 PWRK FPC For access, remove these FRUs in order: • “1010 Keyboard Assembly” on page 27 • “1020 Battery” on page 29 • “1050 Speaker” on page 36 Figure 11. Removal steps of PWRK FPC Use tweezers to gently lift out the left and right motors. Use tweezers to peel off the black Mylar.
Page 53
Lenovo YOGA BOOK Figure 11. Removal steps of PWRK FPC (continued) Disconnect the PWRK FPC and main board interface. Gently pull out the FPC from the interface. Use tweezers to pull the power key’s silver metal button from its slot.
Page 54
Lenovo YOGA BOOK Hardware Maintenance Manual Figure 11. Removal steps of PWRK FPC (continued) Use tweezers to remove the black power key.
Lenovo YOGA BOOK 1120 Main Board Important notices for handling the main board: When handling the main board, bear the following in mind. • Be careful not to drop the main board on a bench top that has a hard surface, such as metal, wood, or composite. • Avoid rough handling of any kind. • Throughout the process, make sure not to drop or stack the main board. • If you put the main 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 Keyboard Assembly” on page 27 • “1020 Battery” on page 29 • “1030 D‐cover Hinge Stand” on page 32 • “1040 A‐cover and Hinge” on page 33 • “1050 Speaker” on page 36 • “1060 USB FPC” on page 39 •...
Page 56
Lenovo YOGA BOOK Hardware Maintenance Manual Figure 12. Removal steps of main board (continued) Use a screwdriver to remove the 2 silver screws on the main board and the black screw on the silver sheeting. Remove the metallic silver sheeting covering the cables. Step Screw (quantity) Color Torque D4.0*M1.4*1.60 (2) Silver 0.7N M1.4*2.5 (1) Black 0.7N Remove the main board from the assembly. Note: A soldering iron can be used to detach the vibration motors from the main board. Disconnect the cable connecter on the main board to remove the cables. ...
Lenovo YOGA BOOK Locations Model Version Lenovo YB1‐X90F WLAN Lenovo YB1‐X90L WLAN + LTE 14 15 Microphone Front‐facing camera Touch screen Pen button Main camera Halo Keyboard/Create Pad Touchpad On/Off button Speakers Volume buttons Headset jack Micro USB connector Indicator Card tray Micro HDMI connector Notes: The WLAN model (Lenovo YB1‐X90F) does not have a Nano‐SIM card slot. Your keyboard layout may be different depending on your location and language.
Lenovo YOGA BOOK Hardware Maintenance Manual Parts list This section presents the following service parts: • “Overall” on page 55 • “AC Adapter” on page 58 • “USB Cable” on page 58 • “Screw” on page 58 • “Label” on page 58 • “Others” on page 59 Notes: • Each FRU is available for all types or models, unless specific types or models are specified.
Lenovo YOGA BOOK 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.
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) ® ® 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 ®...
Page 66
Lenovo YOGA BOOK Hardware Maintenance Manual...