Table of Contents
Lenovo 720 User Manual
Displayed below is the user manual for 720 by Lenovo which is a product in the Notebooks category. This manual has pages.
Related Manuals
MIIX 720-12IKB
Hardware
Maintenance
Manual
Note:
Before using this information and the product it supports, be sure to read the general information under
“Notices” on page 70.
First Edition (October. 2016)
© Copyright Lenovo 2016. All rights reserved.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant a General
Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set
forth in Contract No. GS-35F-05925.
© 2016 Lenovo
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Contents
About this manual ....................................... iv
Safety information ........................................ 1
General safety ................................................ 2
Electrical safety .............................................. 3
Safety inspection guide .................................. 5
Handling devices that are sensitive to
electrostatic discharge .................................... 6
Grounding requirements ................................. 6
Safety notices: multilingual translations.......... 7
Laser compliance statement......................... 14
Important service information ................... 16
Strategy for replacing FRUs ......................... 16
Important notice for replacing a system
board ................................................................17
Important information about replacing
RoHS compliant FRUs ................................. 18
General checkout ...................................... 19
What to do rst ............................................. 20
Power system checkout................................ 21
Checking the AC adapter ................................. 21
Checking operational charging .........................21
Related service information ...................... 23
Restoring the factory contents by using
Recovery system .......................................... 23
Restore of factory default .................................23
Passwords .................................................... 23
Power-on password .......................................... 23
Supervisor password .......................................24
Power management ..................................... 24
Screen blank mode ...........................................24
Putting the computer to sleep or shutting it
down ............................................................. 24
Putting your computer to sleep ......................... 24
Shutting down the computer ............................. 25
Lenovo MIIX 720-12IKB .............................. 26
Specications ............................................... 26
Hotkeys......................................................... 28
FRU replacement notices ............................. 29
Screw notices ..................................................29
Removing and replacing an FRU ................. 30
1010 LCD cover ................................................31
1020 Battery pack .............................................33
1030 PCI Express Mini Card for wireless
LAN ................................................................... 35
1040 SSD card .................................................37
1050 Fan assembly and Heat Sink
assembly...........................................................39
1060 Power Board ............................................ 41
1070
System board ............................................ 43
1080 Speakers .................................................46
1090 Micro SD card reader board ....................47
1100 Integrated camera and microphone ......... 49
1110 Antenna Module .......................................50
1120 Stand Cover ............................................. 51
Locations ...................................................... 55
Front view .........................................................55
Left-side view ....................................................56
Right-side view .................................................56
Top View ...........................................................57
Bottom view ......................................................57
Rear view ..........................................................57
Keyboard folio top view ....................................58
Parts list ........................................................ 59
Overall ..............................................................60
Keyboard ..........................................................65
Miscellaneous parts .......................................... 67
Screws .............................................................. 67
Active Pen.........................................................68
Pen holder ........................................................68
Adaptive ............................................................68
Notices......................................................... 70
Trademarks .................................................. 71
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About this manual
This manual contains service and reference information for the following
Lenovo ideapad product:
Lenovo MIIX 720-12IKB
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-specic section includes service, reference, and product-specic
parts information.
Important:
This manual is intended only for trained servicers who are familiar with Lenovo
ideapad products. Use this manual to troubleshoot problems effectively.
Before servicing a Lenovo ideapad product, make sure to read all the information
under “Safety information” on page 1 and “Important service information” on page
16.
1
Safety information
Safety information
This chapter presents the following safety information that you need to get
familiar with before you service an Lenovo MIIX 720-12IKB 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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MIIX 720-12IKB 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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About this manual
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 bers 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 oor 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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MIIX 720-12IKB Hardware Maintenance Manual
• Always look carefully for possible hazards in your work area. Examples of
these hazards are moist oors, 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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About this manual
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 ideapad
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 rst 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 specied 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 ideapad alterations. Use good judgment
as to the safety of any non-Lenovo ideapad 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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MIIX 720-12IKB 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-specic ESD procedures when they exceed the requirements noted
here.
2. Make sure that the ESD protective devices you use have been certied (ISO
9000) as fully effective.
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 specic service requirement.
Note:
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 veried by a
certied electrician.
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About this manual
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 akes can cause electrical shorts.
Avant de remettre l’ordinateur sous tension après remplacement d’une unité en
clientèle, vériez que tous les ressorts, vis et autres pièces sont bien en place et
bien xées. Pour ce faire, secouez l’unité et assurez-vous qu’aucun bruit suspect ne
se produit. Des pièces métalliques ou des copeaux de métal pourraient causer un
court-circuit.
Bevor nach einem FRU-Austausch der Computer wieder angeschlossen wird,
muß sichergestellt werden, daß keine Schrauben, Federn oder andere Kleinteile
fehlen oder im Gehäuse vergessen wurden. Der Computer muß geschüttelt und auf
Klappergeräusche geprüft werden. Metallteile oder-splitter können Kurzschlüsse
erzeugen.
Prima di accendere l’elaboratore dopo che é stata effettuata la sostituzione di una
FRU, accertarsi che tutte le viti, le molle e tutte le altri parti di piccole dimensioni
siano nella corretta posizione e non siano sparse all’interno dell’elaboratore.
Vericare ciò scuotendo l’elaboratore e prestando attenzione ad eventuali rumori;
eventuali parti o pezzetti metallici possono provocare cortocircuiti pericolosi.
Antes de encender el sistema despues de sustituir una FRU, compruebe que
todos los tornillos, muelles y demás piezas pequeñas se encuentran en su sitio
y no se encuentran sueltas dentro del sistema. Compruébelo agitando el sistema
y escuchando los posibles ruidos que provocarían. Las piezas metálicas pueden
causar cortocircuitos eléctricos.
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MIIX 720-12IKB 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.
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About this manual
Safety notice 3
DANGER
The battery pack contains small amounts of nickel. Do not disassemble it, throw
it into re or water, or short-circuit it. Dispose of the battery pack as required by
local ordinances or regulations. Use only the battery in the appropriate parts listing
when replacing the battery pack. Use of an incorrect battery can result in ignition
or explosion of the battery.
La batterie contient du nickel. Ne la démontez pas, ne l’exposez ni au feu ni à l’eau.
Ne la mettez pas en court-circuit. Pour la mettre au rebut, conformez-vous à la
réglementation en vigueur. Lorsque vous remplacez la batterie, veillez à n’utiliser
que les modèles cités dans la liste de pièces détachées adéquate. En effet, une
batterie inappropriée risque de prendre feu ou d’exploser.
Akkus enthalten geringe Mengen von Nickel. Sie dürfen nicht zerlegt,
wiederaufgeladen, kurzgeschlossen, oder Feuer oder Wasser ausgesetzt werden.
Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten. Beim
Ersetzen der Batterie nur Batterien des Typs verwenden, der in der Ersatzteilliste
aufgeführt ist. Der Einsatz falscher Batterien kann zu Entzündung oder Explosion
führen.
La batteria contiene piccole quantità di nichel. Non smontarla, gettarla nel fuoco
o nell’acqua né cortocircuitarla. Smaltirla secondo la normativa in vigore (DPR
915/82, successive disposizioni e disposizioni locali). Quando si sostituisce la
batteria, utilizzare soltanto i tipi inseriti nell’appropriato Catalogo parti. L’impiego
di una batteria non adatta potrebbe determinare l’incendio o l’esplosione della
batteria stessa.
Las baterías contienen pequeñas cantidades de níquel. No las desmonte, ni
recargue, ni las eche al fuego o al agua ni las cortocircuite. Deséchelas tal como
dispone la normativa local. Utilice sólo baterías que se encuentren en la lista de
piezas al sustituir la batería. La utilización de una batería no apropiada puede
provocar la ignición o explosión de la misma.
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MIIX 720-12IKB Hardware Maintenance Manual
Safety notice 4
DANGER
The lithium battery can cause a re, an explosion, or a severe burn. Do not recharge
it, remove its polarized connector, disassemble it, heat it above 100°C (212°F),
incinerate it, or expose its cell contents to water. Dispose of the battery as required
by local ordinances or regulations. Use only the battery in the appropriate parts
listing. Use of an incorrect battery can result in ignition or explosion of the battery.
La pile de sauvegarde contient du lithium. Elle présente des risques d’incendie,
d’explosion ou de brûlures graves. Ne la rechargez pas, ne retirez pas son
connecteur polarisé et ne la démontez pas. Ne l’exposez pas à une temperature
supérieure à 100°C, ne la faites pas brûler et n’en exposez pas le contenu à l’eau.
Mettez la pile au rebut conformément à la réglementation en vigueur. Une pile
inappropriée risque de prendre feu ou d’exploser.
Die Systembatterie ist eine Lithiumbatterie. Sie kann sich entzünden, explodieren
oder schwere Verbrennungen hervorrufen. Batterien dieses Typs dürfen nicht
aufgeladen, zerlegt, über 100 C erhitzt oder verbrannt werden. Auch darf ihr Inhalt
nicht mit Wasser in Verbindung gebracht oder der zur richtigen Polung angebrachte
Verbindungsstecker entfernt werden. Bei der Entsorgung die örtlichen Bestimmungen
für Sondermüll beachten. Beim Ersetzen der Batterie nur Batterien des Typs
verwenden, der in der Ersatzteilliste aufgeführt ist. Der Einsatz falscher Batterien
kann zu Entzündung oder Explosion führen.
La batteria di supporto e una batteria al litio e puo incendiarsi, esplodere o
procurare gravi ustioni. Evitare di ricaricarla, smontarne il connettore polarizzato,
smontarla, riscaldarla ad una temperatura superiore ai 100 gradi centigradi,
incendiarla o gettarla in acqua. Smaltirla secondo la normativa in vigore (DPR
915/82, successive disposizioni e disposizioni locali). L’impiego di una batteria
non adatta potrebbe determinare l’incendio o l’esplosione della batteria stessa.
La batería de repuesto es una batería de litio y puede provocar incendios,
explosiones o quemaduras graves. No la recargue, ni quite el conector polarizado,
ni la desmonte, ni caliente por encima de los 100°C (212°F), ni la incinere ni
exponga el contenido de sus celdas al agua. Deséchela tal como dispone la
normativa local.
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About this manual
Safety notice 5
If the LCD breaks and the uid from inside the LCD gets into your eyes or on your
hands, immediately wash the affected areas with water at least for 15 minutes. Seek
medical care if any symptoms caused by the uid are present after washing.
Si le panneau d’afchage à cristaux liquides se brise et que vous recevez dans les
yeux ou sur les mains une partie du fluide, rincez-les abondamment pendant au
moins quinze minutes. Consultez un médecin si des symptômes persistent après le
lavage.
Die Leuchtstoffröhre im LCD-Bildschirm enthält Quecksilber. Bei der Entsorgung
die örtlichen Bestimmungen für Sondermüll beachten. Der LCD-Bildschirm
besteht aus Glas und kann zerbrechen, wenn er unsachgemäß behandelt wird
oder der Computer auf den Boden fällt. Wenn der Bildschirm beschädigt ist und
die darin befindliche Flüssigkeit in Kontakt mit Haut und Augen gerät, sollten
die betroffenen Stellen mindestens 15 Minuten mit Wasser abgespült und bei
Beschwerden anschließend ein Arzt aufgesucht werden.
Nel caso che caso l’LCD si dovesse rompere ed il liquido in esso contenuto
entrasse in contatto con gli occhi o le mani, lavare immediatamente le parti
interessate con acqua corrente per almeno 15 minuti; poi consultare un medico se i
sintomi dovessero permanere.
Si la LCD se rompe y el uido de su interior entra en contacto con sus ojos o sus
manos, lave inmediatamente las áreas afectadas con agua durante 15 minutos como
mínimo. Obtenga atención medica si se presenta algún síntoma del uido despues
de lavarse.
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MIIX 720-12IKB Hardware Maintenance Manual
Safety notice 6
DANGER
To avoid shock, do not remove the plastic cover that protects the lower part of the
inverter card.
An d’éviter tout risque de choc électrique, ne retirez pas le cache en plastique
protégeant la partie inférieure de la carte d’alimentation.
Aus Sicherheitsgründen die Kunststoffabdeckung, die den unteren Teil der
Spannungswandlerplatine umgibt, nicht entfernen.
Per evitare scosse elettriche, non rimuovere la copertura in plastica che avvolge la
parte inferiore della scheda invertitore.
Para evitar descargas, no quite la cubierta de plástico que rodea la parte baja de la
tarjeta invertida.
Safety notice 7
DANGER
Though the main batteries have low voltage, a shorted or grounded battery can
produce enough current to burn personnel or combustible materials.
Bien que le voltage des batteries principales soit peu élevé, le court-circuit ou la
mise à la masse d’une batterie peut produire sufsamment de courant pour brûler
des matériaux combustibles ou causer des brûlures corporelles graves.
Obwohl Hauptbatterien eine niedrige Spannung haben, können sie doch bei
Kurzschluß oder Erdung genug Strom abgeben, um brennbare Materialien zu
entzünden oder Verletzungen bei Personen hervorzurufen.
Sebbene le batterie di alimentazione siano a basso voltaggio, una batteria in
corto circuito o a massa può fornire corrente sufficiente da bruciare materiali
combustibili o provocare ustioni ai tecnici di manutenzione.
Aunque las baterías principales tienen un voltaje bajo, una batería cortocircuitada
o con contacto a tierra puede producir la corriente suciente como para quemar
material combustible o provocar quemaduras en el personal.
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About this manual
Safety notice 8
DANGER
Before removing any FRU, turn off the computer, unplug all power cords from
electrical outlets, remove the battery pack, and then disconnect any interconnecting
cables.
Avant de retirer une unité remplaçable en clientèle, mettez le système hors tension,
débranchez tous les cordons d’alimentation des socles de prise de courant, retirez la
batterie et déconnectez tous les cordons d’interface.
Die Stromzufuhr muß abgeschaltet, alle Stromkabel aus der Steckdose gezogen,
der Akku entfernt und alle Verbindungskabel abgenommen sein, bevor eine FRU
entfernt wird.
Prima di rimuovere qualsiasi FRU, spegnere il sistema, scollegare dalle prese
elettriche tutti i cavi di alimentazione, rimuovere la batteria e poi scollegare i cavi
di interconnessione.
Antes de quitar una FRU, apague el sistema, desenchufe todos los cables de las
tomas de corriente eléctrica, quite la batería y, a continuación, desconecte cualquier
cable de conexión entre dispositivos.
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MIIX 720-12IKB Hardware Maintenance Manual
Laser compliance statement
Some models of Lenovo ideapad 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 certied 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
specied herein might result in hazardous radiation exposure.
O uso de controles, ajustes ou desempenho de procedimentos diferentes daqueles
aqui especicados pode resultar em perigosa exposição à radiação.
Pour éviter tout risque d’exposition au rayon laser, respectez les consignes de
réglage et d’utilisation des commandes, ainsi que les procédures décrites.
Werden Steuer- und Einstellelemente anders als hier festgesetzt verwendet, kann
gefährliche Laserstrahlung auftreten.
L’utilizzo di controlli, regolazioni o l’esecuzione di procedure diverse da quelle
specicate possono provocare l’esposizione a.
El uso de controles o ajustes o la ejecución de procedimientos distintos de los aquí
especicados puede provocar la exposición a radiaciones peligrosas.
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.
15
About this manual
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 xo no feixe de luz, não olhe diretamente
por meio de instrumentos óticos e evite exposição direta com o feixe de luz.
Rayonnement laser si carter ouvert. Évitez de fixer le faisceau, de le regarder
directement avec des instruments optiques, ou de vous exposer au rayon.
Laserstrahlung bei geöffnetem Gerät. Nicht direkt oder über optische Instrumente
in den Laserstrahl sehen und den Strahlungsbereich meiden.
Kinyitáskor lézersugár ! Ne nézzen bele se szabad szemmel, se optikai
eszközökkel. Kerülje a sugárnyalábbal való érintkezést!
Aprendo l’unità vengono emesse radiazioni laser. Non fissare il fascio, non
guardarlo direttamente con strumenti ottici e evitare l’esposizione diretta al fascio.
Radiación láser al abrir. No mire jamente ni examine con instrumental óptico el
haz de luz. Evite la exposición directa al haz.
16
MIIX 720-12IKB 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 system board” on page 17
• “Important information about replacing RoHS compliant FRUs” on page 18
Important:
BIOS and device driver xes are customer-installable. The BIOS and device
drivers are posted on the customer support site:
http://support.lenovo.com.
Strategy for replacing FRUs
Before replacing parts:
Make sure that all software xes, 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 xes, 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.
17
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 conguration settings (using the View Conguration
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.
18
MIIX 720-12IKB 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 t and function
are identied 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 identied as compliant
in the system HMM or direct substitutions for those FRUs may be used.
Products marketed before June
2006 Products marketed after June 2006
Current or
original part
Replacement
FRU
Current or
original part
Replacement
FRU
Non-RoHS Can be Non-
RoHS
Must be RoHS Must be RoHS
Non-RoHS Can be RoHS
Non-RoHS Can sub to RoHS
RoHS Must be RoHS
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.
19
General checkout
General checkout
This chapter presents the following information:
• “What to do rst” 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:
• Onlycertiedtrainedpersonnelcanservicethecomputer.
• BeforereplacinganyFRU,readthe entirepageonremovingand replacing
FRUs.
• CarefullyremovescrewsforreusewhenreplacingFRUs.
• Beextremelycarefulduringsuchwriteoperationsascopying,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.
• ReplaceanFRU onlywith anotherFRUofthecorrectmodel. 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.
• AnFRUshouldnotbereplacedjustbecauseofasingle,unreproduciblefailure.
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.
• BecarefulnottoreplaceanondefectiveFRU.
20
MIIX 720-12IKB Hardware Maintenance Manual
What to do rst
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 disc 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 modication.
• If the spindle of a hard disk drive becomes noisy, it may have been subjected
to excessive force, or dropped.
21
General checkout
Power system checkout
To verify a symptom, follow the steps below:
1. Turn off the computer.
2. Connect the AC adapter.
3. Make sure that power is supplied when you turn on the computer.
4. Turn off the computer.
5. Disconnect the AC adapter.
6. 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 AC adapter” on page 21
• “Checking operational charging” on page 21
Checking the AC adapter
You are here because the computer fails only when the AC adapter is used.
• If the power-on indicator does not turn on, check the power cord of the AC
adapter for correct continuity and installation.
• If the computer does not charge during operation, go to “Checking
operational charging”.
To check the AC adapter, follow the steps below:
1. Unplug the AC adapter cable from the computer.
2. Measure the output voltage at the plug of the AC adapter cable. See the
following gure:
9ROWDJH9'&
3LQ
Note: Output voltage for the AC adapter pin No. 2 may differ from the one you
are servicing.
3. If the voltage is not correct, replace the AC adapter.
4. If the voltage is acceptable, do the following:
• Replace the system board.
• If the problem continues, go to “Lenovo MIIX 720-12IKB” on page 26.
Note: Noise from the AC adapter does not always indicate a defect.
Checking operational charging
To check whether the battery charges properly during operation, use a
discharged battery pack or a battery pack that has less than 50% of the total
power remaining when installed in the computer.
22
MIIX 720-12IKB Hardware Maintenance Manual
Perform operational charging. If the battery status indicator or icon does not
light on, remove the battery pack and let it return to room temperature. Reinstall
the battery pack. If the charge indicator or icon is still off, replace the battery
pack.
If the charge indicator still does not light on, replace the system board. Then
reinstall the battery pack.
23
Related service information
Related service information
This chapter presents the following information:
• “Restoring the factory contents by using Recovery system” on page 23
• “Passwords” on page 23
• “Power management” on page 24
Restoring the factory contents by using Recovery system
Restore of factory default
The Lenovo MIIX 720-12IKB computers come with pre-installed Recovery
system.In order to save application les and the initial backed up les of the
system, the hard disk in a Lenovo computer includes a hidden partition when it
is shipped. If you need to restore the system to the point of your rst boot up,
just enter Lenovo Recovery system and run System Recovery. For details of
Recovery system, see the User Guide for Lenovo Recovery system.
Note: This will delete all the new data on the system partition (C drive), which
is not recoverable. Make sure to back up your critical data before you perform this
action.
When you use the recovery discs to boot your computer, the system will enter
the user interface for system recovery automatically. Please follow the prompt
to insert the backup discs to complete the whole recovery process.
Note: The recovery process might take up to 2 hours.
Passwords
As many as two passwords may be needed for any Lenovo ideapad computer:
the power-on password (POP) and the supervisor password (SVP).
If any of these passwords has been set, a prompt for it appears on the screen
whenever the computer is turned on. The computer does not start until the
password is entered.
Exception: If only an SVP is installed, the password prompt does not appear
when the operating system is booted.
Power-on password
A power-on password (POP) protects the system from being powered on by
an unauthorized person. The password must be entered before an operating
system can be booted.
24
MIIX 720-12IKB Hardware Maintenance Manual
Supervisor password
A supervisor password (SVP) protects the system information stored in the
BIOS Setup Utility. The user must enter the SVP in order to get access to the
BIOS Setup Utility and change the system conguration.
Attention: If the SVP has been forgotten and cannot be made available to
the servicer, there is no service procedure to reset the password. The system
board must be replaced for a scheduled fee.
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.
Screen blank mode
If the time set on the “Turn off monitor” timer in the operating system expires,
the LCD backlight turns off.
To end screen blank mode and resume normal operation, press any key.
Putting the computer to sleep or shutting it down
When you have nished working with your computer, you can put it to sleep or
shut it down.
Putting your computer to sleep
If you will be away from your computer for only a short time, put the computer
to sleep.
When the computer is in sleep mode, you can quickly wake it to resume use,
bypassing the startup process.
To put the computer to sleep, do one of the following:
• Press the Power button.
• Select the Start button, then select Power
→ Sleep.
Note: Put your computer to sleep before you move it. Moving your computer
while the hard disk drive is spinning can damage the hard disk, causing loss of
data.
To wake up the computer, perform the following:
• Press the Power button.
25
Related service information
Shutting down the computer
If you are not going to use your computer for a long time, shut it down.
To shut down the computer, do one of the following:
• Select the Start button, then select Power
→ Shut down.
• Right-click or press the Start button in the lower-left corner and select Shut
down or sign out → Shut down.
26
MIIX 720-12IKB Hardware Maintenance Manual
Lenovo MIIX 720-12IKB
This chapter presents the following product-specific service references and
product-specic parts information:
• “Specications” on page 26
• “Hotkeys” on page 28
• “FRU replacement notices” on page 29
• “Removing and replacing an FRU” on page 30
• “Locations” on page 55
• “Parts list” on page 59
Specications
The following table lists the specications of the Lenovo MIIX 720-12IKB :
Table 1. Specications
Tablet
Form Factor
Dimensions Appr. 292 mm × 210 mm × 8.9 mm
Weight Appr. 780 g
LCD size 12.0 inch
Processor
See the system properties of your computer.
You can do this as follows:
Click Control Panel, then click Hardware and Sound, click Device Manager
under Devices and Printers and double click Processors.
Memory
Type DDR4-2133 MHz
Maximum
supported
capacity
16 GB
Storage
Capacity SSD 128 GB/256 GB/512 GB/1 TB
Interface PCIe
Display
Touch screen Multi-touch screen
Display
resolution 3:2 (2,880 × 1,920 pixels)
I/O Ports
Audio Combo audio jack × 1
Card reader Micro SD card slot × 1
USB USB 3.0 port × 1, USB 2.0 port × 1, Type C port × 1
Battery pack
Type Li-Polymer
Capacity 4 Cells, 41 Wh
27
Lenovo MIIX 720-12IKB
Table 1. Specications (continued)
AC power adapter
Input 100-240 V, 50-60 Hz AC
Output
voltage 20 V DC
Power 45 W
Miscellaneous
Camera Front camera (IR camera + 1.0 MP normal camera)
Rear camera (5.0 MP)
Folio keyboard
Form Factor
Dimensions Appr. 293 mm × 226 mm × 5.7 mm
Weight Appr. 395 g
I/O Ports
Pogo pin
with guide
pin
Pogo pin with guide pin × 1
28
MIIX 720-12IKB Hardware Maintenance Manual
Hotkeys
You can access certain system settings quickly by pressing the appropriate
hotkeys.
Table 2. Hotkeys
: Mutes/unmutes the sound.
: Decreases the volume level.
: Increases the volume level.
: Refreshes page.
: Enables/disables the touch pad.
: Enables/disables Airplane mode.
: Locks/unlocks the LCD screen.
: Enables the external projector or dangles the external
display.
: Decreases display brightness.
: Increases display brightness.
29
Lenovo MIIX 720-12IKB
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 ideapad 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.
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 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 rmly to the torque shown in the table. Carefully remove
screws for reuse when replacing FRUs. Make sure that all screws are
tightened rmly.
• Ensure torque screwdrivers are calibrated correctly following country
specications.
30
MIIX 720-12IKB Hardware Maintenance Manual
Removing and replacing an FRU
This section presents exploded gures 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
certied. An untrained person runs the risk of damaging parts.
2. Before replacing any FRU, review “FRU replacement notices” on page 29.
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
gures 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 gure.
6. When removing the FRU, move it in the direction as given by the arrow in
the gure.
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 55.
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, 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 akes 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.
31
Lenovo MIIX 720-12IKB
1010 LCD cover
Figure 1. Removal step of LCD cover
As shown by the arrows, flip the stand cover gently to the desired angle by
inserting your finger in the finger recess between the stand cover and the
bottom plate.
Remove screws 1.
a
a
a
a
a
a
32
MIIX 720-12IKB Hardware Maintenance Manual
Figure 1. Removal step of LCD cover (continued)
Detach the touch pad connector in the directions shown by arrows 2 and 3,
disconnect the LCD panel connector in the direction shown by arrow 4.
d
b
c
Remove the LCD cover in the direction shown by arrow 5.
e
Step Screw (quantity)
Color
Torque
2M2 × 3.5, A COVER TO FRAME (6) Silver
1.85±0.20kgf·cm
33
Lenovo MIIX 720-12IKB
1020 Battery pack
For access, remove this FRU:
• “1010 LCD cover” on page 31
DANGER
Only use the battery specied in the parts list for your computer. Any other battery
could ignite or explode.
Remove screw 1, and the screws 2.
ab
b
b
b
Remove the system board shielding in the direction shown by arrow 3.
c
Remove the foil for thermal.
d
34
MIIX 720-12IKB Hardware Maintenance Manual
Figure 2. Removal steps of battery pack
Disconnect the battery connector in the direction shown by arrow 5. Disconnect
the LCD panel connector in the direction shown by arrow 6, detach the Micro
SD card reader board connector and pogo pin connector in the direction shown
by arrows 7 and 8.
e
f
gh
pull out the adhesive tape. Remove the battery pack in the direction shown by
arrow 9.
i
When installing: Make sure the battery pack connector is attached rmly.
Step Screw (quantity) Color Torque
1M2 × 1.6, (4) Black
1.85±0.20kgf·cm
35
Lenovo MIIX 720-12IKB
1030 PCI Express Mini Card for wireless LAN
For access, remove these FRUs in order:
• “1010 LCD cover” on page 31
• “1020 Battery pack” on page 33
Important:
The preinstalled WLAN module may only be replaced with a Lenovo approved
module in order to comply with FCC and IC regulations. Refer to Table 3 “Parts
list-Overall” on page 61 for Lenovo part numbers for the approved modules.
Figure 3. Removal steps of PCI Express Mini Card for wireless LAN
Disconnect the two wireless LAN cables (black, white) 1. Remove the screw 2.
b
aa
Step Screw (quantity) Color Torque
2M2 × 1.6, NGFF to Bezel (1) Black
1.85±0.20kgf·cm
In step 1, unplug the jacks by using the removal tool antenna RF connector
(P/N: 08K7159), or pick up the connectors with your ngers and gently unplug
them in the direction shown by the arrows.
When installing:
• In models with a wireless LAN card that has two antenna connectors, plug
the black cable (1st) (MAIN) into the jack labeled 1, and the grey cable (2nd)
(AUX) into the jack labeled 2 on the card.
36
MIIX 720-12IKB Hardware Maintenance Manual
Figure 3. Removal steps of PCI Express Mini Card for wireless LAN (continued)
Remove the card in the direction shown by arrow 3.
c
38
MIIX 720-12IKB Hardware Maintenance Manual
Figure 4. Removal steps of SSD card (continued)
Remove the SSD card in the direction shown by arrow 2.
b
Step Screw (quantity) Color Torque
1M2 × 1.6, NGFF to Bezel (1) Black
1.85±0.20kgf·cm
39
Lenovo MIIX 720-12IKB
1050 Fan assembly and Heat Sink assembly
For access, remove these FRUs in order:
• “1010 LCD cover” on page 31
• “1020 Battery pack” on page 33
• “1030 PCI Express Mini Card for wireless LAN” on page 35
• “1040 SSD card” on page 37
Figure 5. Removal steps of fan assembly and heat sink assembly
Detach the fan connector in the direction shown by arrows 1 and 2, and then
remove the screws 3 and 4.
cc
dd
d
c
c
a
b
Step Screw (quantity) Color Torque
2M2 × 2.5, Phillips head, nylok-coated (3)
FAN TO UPPER Black 1.85±0.20kgf
·
cm
When installing: Make sure that the fan connector is attached rmly to the
system board.
40
MIIX 720-12IKB Hardware Maintenance Manual
Figure 5. Removal steps of fan assembly and heat sink assembly (continued)
Remove the fan and heat sink in the direction shown by arrow 5. Be careful
not to damage the connector.
e
When installing: Make sure that the fan connector is attached rmly.
41
Lenovo MIIX 720-12IKB
1060 Power Board
For access, remove these FRUs in order:
• “1010 LCD cover” on page 31
• “1020 Battery pack” on page 33
• “1030 PCI Express Mini Card for wireless LAN” on page 35
• “1040 SSD card” on page 37
• “1050 Fan assembly and Heat Sink assembly” on page 39
Figure 6. Removal steps of power board
Remove the screw 1, then remove the power board bracket in the direction
shown by arrow 2.
a
b
Step Screw (quantity) Color Torque
1M1.6 × 1.8, power Board
bracket to power board (1)
Silver 1.0±0.20kgf·cm
42
MIIX 720-12IKB Hardware Maintenance Manual
Figure 6. Removal steps of power board (continued)
Disconnect the FPC connectors in the direction shown by arrow 4. Disconnect
the wireless LAN cable 5. Loosen the screws 3.
c
e
c
c
d
Step Screw (quantity) Color Torque
3M2 × 2.5, power board to
bezel(2)
Black 1.85±0.20kgf
·
cm
M1.6 × 1.8, power Board to
Bezel (1)
Black 1.0±0.20kgf
·
cm
When installing: Make sure the FPC connectors are attached rmly.
Remove the power board in the direction shown by arrow 6.
f
43
Lenovo MIIX 720-12IKB
1070
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 LCD cover” on page 31
• “1020 Battery pack” on page 33
• “1030 PCI Express Mini Card for wireless LAN” on page 35
• “1040 SSD card” on page 37
• “1050 Fan assembly and Heat Sink assembly” on page 39
• “1060 Power Board” on page 41
44
MIIX 720-12IKB Hardware Maintenance Manual
Figure 7. Removal steps of system board
Remove screws 1, then remove the system board shielding 2.
b
a
a
Step Screw (quantity) Color Torque
1M2 × 1.6, (2) Black
1.85±0.20kgf·cm
Unplug the wireless cable 1, disconnect the rear camera connector in the
direction shown by arrow 2, detach the IR camera and microphone connector
in the direction shown by arrows 3 and 4,disconnect the front camera
connector in the direction shown by arrow 5. Remove the screws 6.
cd
e
a
b
45
Lenovo MIIX 720-12IKB
Figure 7. Removal steps of system board (continued)
f
f
When installing: Make sure that all the connectors are attached rmly.
Step Screw (quantity) Color Torque
5M2 × 1.6, MB to Bezel (2) Black 1.85±0.20kgf
·
cm
Remove the system board as shown by arrow 7.
g
46
MIIX 720-12IKB Hardware Maintenance Manual
1080 Speakers
For access, remove these FRUs in order:
• “1010 LCD cover” on page 31
• “1020 Battery pack” on page 33
• “1030 PCI Express Mini Card for wireless LAN” on page 35
• “1040 SSD card” on page 37
• “1050 Fan assembly and Heat Sink assembly” on page 39
• “1060 Power Board” on page 41
• “1070 System board” on page 43
Figure 8. Removal steps of speakers
Unplug the connector in the direction shown by arrow 1. Remove the speakers
in the direction shown by arrows 2.
b
b
a
When installing: Make sure the speaker connector is attached rmly.
47
Lenovo MIIX 720-12IKB
1090 Micro SD card reader board
For access, remove these FRUs in order:
• “1010 LCD cover” on page 31
• “1020 Battery pack” on page 33
• “1030 PCI Express Mini Card for wireless LAN” on page 35
• “1040 SSD card” on page 37
• “1050 Fan assembly and Heat Sink assembly” on page 39
• “1060 Power Board” on page 41
• “1070 System board” on page 43
• “1080 Speakers” on page 46
Figure 9. Removal steps of Micro SD card reader board
Detach the Micro SD card reader board connector in the direction shown by
arrows 1, 2. Remove the screws 3.
a
b
cc
48
MIIX 720-12IKB Hardware Maintenance Manual
Figure 9. Removal steps of Micro SD card reader board (continued)
Remove the Micro SD card reader board 4.
d
Step Screw (quantity) Color Torque
2M2 × 2.5, (2) Black 1.85±0.20kgf*cm
When installing: Make sure the Micro SD card reader board connector is
attached rmly.
49
Lenovo MIIX 720-12IKB
1100 Integrated camera and microphone
For access, remove these FRUs in order:
• “1010 LCD cover” on page 31
• “1020 Battery pack” on page 33
• “1030 PCI Express Mini Card for wireless LAN” on page 35
• “1040 SSD card” on page 37
• “1050 Fan assembly and Heat Sink assembly” on page 39
• “1060 Power Board” on page 41
• “1070 System board” on page 43
• “1080 Speakers” on page 46
• “1090 Micro SD card reader board” on page 47
Figure 10. Removal steps of integrated camera and microphone
Remove the screws 1. Remove the integrated camera in the direction shown
by arrow 2.
aa
a
b
Step Screw (quantity) Color Torque
1M2 × 2.5, camera Board
to Bezel (3)
Black 1.85±0.20kgf
·
cm
Remove the microphone in the direction shown by arrow 3.
c
50
MIIX 720-12IKB Hardware Maintenance Manual
1110 Antenna Module
For access, remove these FRUs in order:
• “1010 LCD cover” on page 31
• “1020 Battery pack” on page 33
• “1030 PCI Express Mini Card for wireless LAN” on page 35
• “1040 SSD card” on page 37
• “1050 Fan assembly and Heat Sink assembly” on page 39
• “1060 Power Board” on page 41
• “1070 System board” on page 43
• “1080 Speakers” on page 46
• “1090 Micro SD card reader board” on page 47
• “1100 Integrated camera and microphone” on page 49
Figure 11. Removal steps of antenna module
Remove the Wi-Fi antennas in the direction shown by arrows 1.
a
a
51
Lenovo MIIX 720-12IKB
1120 Stand Cover
For access, remove these FRUs in order:
• “1010 LCD cover” on page 31
• “1020 Battery pack” on page 33
• “1030 PCI Express Mini Card for wireless LAN” on page 35
• “1040 SSD card” on page 37
• “1050 Fan assembly and Heat Sink assembly” on page 39
• “1060 Power Board” on page 41
• “1070 System board” on page 43
• “1080 Speakers” on page 46
• “1090 Micro SD card reader board” on page 47
• “1100 Integrated camera and microphone” on page 49
• “1110 Antenna Module” on page 50
Figure 12. Removal steps of stand cover
Remove the six screws 1 and four screws 2, and then remove the stand
cover.
a
b
a
b
Step Screw (quantity) Color Torque
1M1.6 × 2.5, stand cover to Bezel (4) Black 1.00±0.20kgf*cm
1M2 × 2.5, stand cover to Bezel (6) Silver 1.85±0.20kgf*cm
52
MIIX 720-12IKB Hardware Maintenance Manual
Figure 12. Removal steps of stand cover (continued)
Remove the stand cover in the direction shown by arrow 3.
c
Remove the four screws 4, and then remove the hinge covers in the direction
shown by arrows 5.
d
e
d
d
e
d
Step Screw (quantity) Color Torque
3M2.0 × 3,HINGE CAP TO STANDER
COVER (4)
Silver 1.85±0.20kgf*cm
53
Lenovo MIIX 720-12IKB
Figure 12. Removal steps of stand cover (continued)
Remove the screws 6 and 7, and then remove the hinges in the direction
shown by arrows 8.
gf
f
gf
f
h
h
Step Screw (quantity) Color Torque
4M1.6 × 2.5, stand cover to Bezel (4) Black 1.0±0.20kgf·cm
4M2 × 2.5, stand cover to Bezel (2) Silver 1.85±0.20kgf·cm
54
MIIX 720-12IKB Hardware Maintenance Manual
Note: Applying labels to the base cover
The new base cover FRU is shipped with a kit containing labels of several
kinds. When you replace the base cover, you need to apply the following
label:
The following labels need to be peeled off from the old base cover, and
need to be put on the new base cover.
a ES label
b Rating label e WL/BT label
c Intel label f QR code label
d Indonesia label
g Ofce label
For the location of each label, refer to the following gures:
ab
ab
cde
cg
f
For worldwide:
For China:
55
Lenovo MIIX 720-12IKB
Locations
Front view
1 Light sensor
2 Normal camera
3 IR LED
4 IR camera
5 Wireless LAN antenna
6 Multi-touch screen
6
1 2 43 3 55
56
MIIX 720-12IKB Hardware Maintenance Manual
Left-side view
1 Speakers
2 Finger recess
3 USB 2.0 port
4 Type-C port (With AC power adapter function)
5 Combo audio jack
3 4 51 2
Right-side view
1 Power button indicator
2 Power button
3 Volume up/down button
4 USB 3.0 port
5 Speakers
432 51
57
Lenovo MIIX 720-12IKB
Top View
1 Ventilation slots
2 Digital array microphone
12 2
Bottom view
1 Pogo pin with guide pin
2 Pogo pin mylar
1 2
Rear view
1 Rear camera
2 Stand cover
3 Micro SD card slot
4 Watch belt hinge
4
2
1
3
4
58
MIIX 720-12IKB Hardware Maintenance Manual
Keyboard folio top view
1 Pogo pin with guide pin
2 Keyboard
3 Touch pad
2
3
1
60
MIIX 720-12IKB Hardware Maintenance Manual
Overall
7
1
8
9
5
4
3
b
2
10
11
12
13
6
18
c
16
17
19
22
20
21
14
15
11
a
12
61
Lenovo MIIX 720-12IKB
Table 3. Parts list—Overall
No. FRU FRU no. CRU
ID.
1 LCD Module L 80VV W/BEZEL 5D10M65391
N
1 LCD, 12.0'' QHD IPS GL, AU B120YAN01
WQX+I G S NB
5D10L61511
1 LCD, 12.0'' QHD IPS GL, Second source under
assessment
1 Touch screen Panel, Touch screen
Panel(0.55mm), SLC 120004BKM OGS
MX72012 TSP
ST50M43966
1 Touch screen Panel, Touch screen
Panel(0.55mm), TPK T09GNG120034AB OGS
MX TSP
ST50M43964
1 LCD+Touch panel Module, QHD LCD+ OGS
Touch Bonded module (0.55mm), SLC AUO
12WQX+ 120004BKF OGS
ST50M43968
1 LCD+Touch panel Module, QHD LCD+
OGS Touch Bonded module (0.55mm),
TPKAUO12WQX+ T09ALFC12002B OGS
ST50M43967
2 Shielding L 80VV For MB L 5S60M65448
3 MB L 80VV NOK I37100U UMA 16G 5B20M65415
3 MB L 80VV WIN I37100U UMA 16G 5B20M65461
3 MB L 80VV NOK I37100U UMA 4G 5B20M65445
3 MB L 80VV WIN I37100U UMA 4G 5B20M65388
3 MB L 80VV NOK I37100U UMA 8G 5B20M65389
3 MB L 80VV WIN I37100U UMA 8G 5B20M65392
3 MB L80VVNOKI37100UUMA16GTPMPRC 5B20M65463
3 MB L80VVWINI37100UUMA16GTPMPRC 5B20M65436
3 MB L 80VVNOKI37100UUMA4GTPMPRC 5B20M65429
3 MB L 80VVWINI37100UUMA4GTPMPRC 5B20M65434
3 MB L 80VVNOKI37100UUMA8GTPMPRC 5B20M65409
3 MB L 80VVWINI37100UUMA8GTPMPRC 5B20M65394
3 MB L 80VVNOKI37100UUMA16GTPMWW 5B20M65420
3 MB L 80VVWINI37100UUMA16GTPMWW 5B20M65449
3 MB L 80VV NOKI37100UUMA4GTPMWW 5B20M65475
3 MB L 80VV WINI37100UUMA4GTPMWW 5B20M65455
3 MB L 80VV NOKI37100UUMA8GTPMWW 5B20M65422
3 MB L 80VV WINI37100UUMA8GTPMWW 5B20M65451
3 MB L 80VV NOK I57200U UMA 16G 5B20M65416
3 MB L 80VV WIN I57200U UMA 16G 5B20M65430
3 MB L 80VV NOK I57200U UMA 4G 5B20M65432
3 MB L 80VV WIN I57200U UMA 4G 5B20M65401
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MIIX 720-12IKB Hardware Maintenance Manual
Table 3. Parts list—Overall (continued)
No. FRU FRU no. CRU
ID.
3 MB L 80VV NOK I57200U UMA 8G 5B20M65447
N
3 MB L 80VV WIN I57200U UMA 8G 5B20M65398
3 MB L80VVNOKI57200UUMA16GTPMPRC 5B20M65407
3 MB L80VVWINI57200UUMA16GTPMPRC 5B20M65473
3 MB L 80VVNOKI57200UUMA4GTPMPRC 5B20M65462
3 MB L 80VVWINI57200UUMA4GTPMPRC 5B20M65410
3 MB L 80VVNOKI57200UUMA8GTPMPRC 5B20M65393
3 MB L 80VVWINI57200UUMA8GTPMPRC 5B20M65446
3 MB L 80VVNOKI57200UUMA16GTPMWW 5B20M65469
3 MB L 80VVWINI57200UUMA16GTPMWW 5B20M65439
3 MB L 80VV NOKI57200UUMA4GTPMWW 5B20M65443
3 MB L 80VV WINI57200UUMA4GTPMWW 5B20M65435
3 MB L 80VV NOKI57200UUMA8GTPMWW 5B20M65414
3 MB L 80VV WINI57200UUMA8GTPMWW 5B20M65428
3 MB L 80VV NOK I77500U UMA 16G 5B20M65474
3 MB L 80VV WIN I77500U UMA 16G 5B20M65400
3 MB L 80VV NOK I77500U UMA 4G 5B20M65397
3 MB L 80VV WIN I77500U UMA 4G 5B20M65468
3 MB L 80VV NOK I77500U UMA 8G 5B20M65412
3 MB L 80VV WIN I77500U UMA 8G 5B20M65390
3 MB L80VVNOKI77500UUMA16GTPMPRC 5B20M65431
3 MB L80VVWINI77500UUMA16GTPMPRC 5B20M65450
3 MB L 80VVNOKI77500UUMA4GTPMPRC 5B20M65403
3 MB L 80VVWINI77500UUMA4GTPMPRC 5B20M65419
3 MB L 80VVNOKI77500UUMA8GTPMPRC 5B20M65427
3 MB L 80VVWINI77500UUMA8GTPMPRC 5B20M65437
3 MB L 80VVNOKI77500UUMA16GTPMWW 5B20M65408
3 MB L 80VVWINI77500UUMA16GTPMWW 5B20M65395
3 MB L 80VV NOKI77500UUMA4GTPMWW 5B20M65423
3 MB L 80VV WINI77500UUMA4GTPMWW 5B20M65452
3 MB L 80VV NOKI77500UUMA8GTPMWW 5B20M65456
3 MB L 80VV WINI77500UUMA8GTPMWW 5B20M65465
4 M.2 PCIe SSD, 128GB PCIE, Samsung
MZVLV128HCGR 128GB M.2 PCIE SSD
5SD0J46480
4M.2 PCIe SSD, 128GB PCIE, HFS128GD9MND-
5510A M.2 128G SSD
5SD0L56327
4 M.2 PCIe SSD, 256GB PCIE, Samsung
MZVLV256HCHP 256GB M.2 PCIE SSD
5SD0J46479
63
Lenovo MIIX 720-12IKB
Table 3. Parts list—Overall (continued)
No. FRU FRU no. CRU
ID.
4M.2 PCIe SSD, 256GB PCIE, HFS256GD9MND-
5510A M.2 256G SSD
5SD0L56326
N
4 M.2 PCIe SSD, 512GB PCIE, Samsung
MZVLV512HCJH 512GB M.2 PCIE SSD
5SD0J46481
4M.2 PCIe SSD, 512GB PCIE, HFS512GD9MND-
5510A M.2 512G SSD
5SD0L56325
4 M.2 PCIe SSD, 1TB PCIE, Samsung
MZVLW1T0HMLH-000L2 PCIe M.2 1TB SSD
5SD0L07883
5 SIM card L 80VV w/cable 5C50M65444
6 Speaker L 80VV L+R 5SB0M65440
7 Front Camera L 80VV w/cable 5C20M65396
7 Front Camera, IR Camera, CCY CNFFE24 HD
RGB+IR NB camera
SC20L71640
7 Front Camera, IR Camera, BIS BND5T6YT9 HD
RGB+IR NB camera
SC20L71641
8 Rear Camera L 80VV w/cable 5C20M65472
8 Rear Camera, 5M with, CCY CJAG514 5M Rear
MIPI camera
SC20L71639
8 Rear Camera, 5M with, BIS BCP355V11 5M
Rear MIPI camera
SC20L71642
9 Dual mic L 80VV W/cable 5M40M65441
10 LCD Cover L 80VV Black W/Ant 5CB0M65404
10 LCD Cover L 80VV Golden W/Ant 5CB0M65442
11 Hinge Cover L 80VV R+L Black 5CB0M65399
11 Hinge Cover L 80VV R+L Golden 5CB0M65460
12 Hinge, Black, Vision_12_hinge_assy_AVC_
Black
SH50L79428
12 Hinge, Gloden, Vision_12_hinge_assy_AVC_
Golden
SH50L79427
12 Hinge L 80VV Black R+L 5H50M65406
12 Hinge L 80VV Golden R+L 5H50M65405
13 Stand Cover L 80VV Black WW 5CB0M65411
13 Stand Cover L 80VV Golden WW 5CB0M65402
13 Stand Cover L 80VV Black PRC 5CB0M65426
13 Stand Cover L 80VV Golden PRC 5CB0M65454
14 Sensor board L 80VV 5C50M65424
15 Shielding L 80VV For MB R 5S60M65467
16 Thermal module L 80VV 5H40M65453
17 WLAN & BT, Wi 2X2 ac +BT Combo, Intel 8265
2x2AC+BT PCIE M.2 WLAN NV
SW10K97453
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MIIX 720-12IKB Hardware Maintenance Manual
Table 3. Parts list—Overall (continued)
No. FRU FRU no. CRU
ID.
17 WLAN & BT, Wi 2X2 ac +BT Combo, Ltn
NFA344A 2x2AC+BT4.x PCIE M.2 WLAN
SW10K97465
N
18 Power Board L 80VV w/cable 5C50M65438
19 Battery L 80VV W/Removable Tape 5B10M65425
19 Battery, 4Cell 41W Polymer, VISION SP/A
L15M4PC3 7.68V41Wh4cell bty
5B10L72502
19 Battery, 4Cell 41W Polymer, VISION LG
L15L4PC3 7.72V41Wh4cell bty
5B10L79291
20 camera Bracket L 80VV 5B40M65418
21 Thunderbolt IC, Thunderbolt, Intel JHL6340 AR-
SP TBT chip
SSA0M27775
22 EDP cable L 80VV 5C10M65413
65
Lenovo MIIX 720-12IKB
Keyboard
Table 4. Parts list—Keyboard
Language P/N CRU ID.
Folio case
Feather
case +
Keyboad
+Click pad
Chicony
(Backlight)
English 5N20L76619
*
English-For
USA
5N20M42679
U.K. English 5N20L76633
Italian 5N20L76622
Spanish 5N20L76620
Turkish 5N20L76612
Thai 5N20L76616
Portuguese 5N20L76630
Latin 5N20L76613
Canadian
English&French
5N20L76642
Korean 5N20L76641
Traditional
Chinese
5N20L76626
Russian 5N20L76643
French 5N20L76632
German 5N20L76624
Arabic 5N20L76629
Brazilian 5N20L76636
Japanese 5N20L76621
Dutch 5N20L76617
Greek 5N20L76618
Hebrew 5N20L76614
Hungarian 5N20L76631
Four Nordic
countries
5N20L76634
Belgian 5N20L76635
Iceland 5N20L76615
Slovenian 5N20L76623
Swiss 5N20L76637
International
English
5N20L76628
Czechoslovakian
5N20L76627
Bulgarian 5N20L76640
Indian 5N20L76639
66
MIIX 720-12IKB Hardware Maintenance Manual
Table 4. Parts list—Keyboard (continued)
Language P/N CRU ID.
Folio case
Feather
case +
Keyboad
+Click pad
Chicony
(Backlight)
French-
Arabic
5N20L76638
*
Ukraine 5N20L76795
67
Lenovo MIIX 720-12IKB
Miscellaneous parts
Table 5. Parts list—Miscellaneous parts
FRU P/N CRU ID.
Cable miscellaneous parts:
System miscellaneous parts:
(a) Foil L 80VV For Thermal
(b) Foil L 80VV For SDD
(c) Power BD Bracket L 80VV
Note: Italicized letters in parentheses are references to
the exploded view in “Overall” on page 60.
5T10M65421
5T10M65464
5B40M65457
N
Screws
Table 6. Parts list—Screws
FRU P/N CRU ID.
SCREW L 80VV M1.6x2.5 2.5 T0.25 5S10M65459 N
SCREW L 80VV M2x1.6 4.5 T0.3 5S10M65466 N
SCREW L 80VV M2x2.5 3.5 T0.3 5S10M65458 N
SCREW L 80VV M2x3.0 3.5 T0.25 BK 5S10M65387 N
SCREW L 80VV M2x3.0 3.5 T0.25 GD 5S10M65470 N
SCREW L 80VV M2x3.5 3.5 T0.45 BK 5S10M65417 N
SCREW L 80VV M2x3.5 3.5 T0.45 GD 5S10M65471 N
SCREW L 80VV M1.6x1.8 3.5 T0.3 5S10M65433 N
68
MIIX 720-12IKB Hardware Maintenance Manual
Active Pen
Table 7. Parts list—Active Pen
FRU P/N CRU ID.
Touch Panel Pen, Active Pen (except TW Korea)
Wacom ESP10110C5 D9.5 BK A Pen 5T70J33309 *
Touch Panel Pen, Active Pen with BT (US, CE, Japan,
China, AS/NZS, Korea, Taiwan) WCM ESP101B21C5
D9.5 BT Pen
5T70M55297 *
Pen holder
Table 8. Parts list—Pen holder
FRU P/N CRU ID.
Pen Holder, Pen Holder (With Out BT Pen), PEN Holder
Black J SM20F17096 *
Pen Holder, Pen Holder (With Out BT Pen), PEN Holder
Black C SM20F17098 *
Adaptive
Table 9. Parts list—Adaptive
FRU P/N CRU ID.
Adatper, Type C Adatper, Delta ADLX45UDCC2A
20V2.25A adapter
5A10K34721 *
Adatper, Type C Adatper, Delta ADLX45UDCG2A
20V2.25A adapter
5A10K34718 *
Adatper, Type C Adatper, Delta ADLX45UDCU2A
20V2.25A adapter
5A10K34723 *
Adatper, Type C Adatper, Delta ADLX45UDCK2A
20V2.25A adap COO
SA10M39910 *
Adatper, Type C Adatper, Delta ADLX45UDCI2A
20V2.25A adapter
5A10K34711 *
Adatper, Type C Adatper, Delta ADLX45UDCR2A
20V2.25A adapter
5A10K34727 *
Adatper, Type C Adatper, Delta ADLX45UDCA2A
20V2.25A adapter
5A10K34729 *
Adatper, Type C Adatper, Delta ADLX45UDCE2A
20V2.25A adapter
5A10K34704 *
Adatper, Type C Adatper, Delta ADLX45UDCB2A
20V2.25A adapter
5A10K34708 *
Adatper, Type C Adatper, Liteon ADLX45ULCC2A
20V2.25A adapter
5A10K34705 *
Adatper, Type C Adatper, Liteon ADLX45ULCG2A
20V2.25A adapter
5A10K34709 *
Adatper, Type C Adatper, Liteon ADLX45ULCU2A
20V2.25A adapter
5A10K34713 *
69
Lenovo MIIX 720-12IKB
Table 9. Parts list—Adaptive (continued)
FRU P/N CRU ID.
Adatper, Type C Adatper, Liteon ADLX45ULCK2A
20V2.25A adap COO
SA10M39909 *
Adatper, Type C Adatper, Liteon ADLX45ULCI2A
20V2.25A adapter
5A10K34717 *
Adatper, Type C Adatper, Liteon ADLX45ULCR2A
20V2.25A adapter
5A10K34730 *
Adatper, Type C Adatper, Liteon ADLX45ULCA2A
20V2.25A adapter
5A10K34707 *
Adatper, Type C Adatper, Liteon ADLX45ULCE2A
20V2.25A adapter
5A10K34710 *
Adatper, Type C Adatper, Liteon ADLX45ULCB2A
20V2.25A adapter
5A10K34714 *
Adatper, Type C Adatper, Chicony ADLX45UCCC2A
20V2.25A adapter
5A10K34722 *
Adatper, Type C Adatper, Chicony ADLX45UCCG2A
20V2.25A adapter
5A10K34726 *
Adatper, Type C Adatper, Chicony ADLX45UCCU2A
20V2.25A adapter
5A10K34728 *
Adatper, Type C Adatper, Chicony ADLX45UCCK2A
20V2.25A adap COO
SA10M39911 *
Adatper, Type C Adatper, Chicony ADLX45UCCI2A
20V2.25A adapter
5A10K34724 *
Adatper, Type C Adatper, Chicony ADLX45UCCR2A
20V2.25A adapter
5A10K34712 *
Adatper, Type C Adatper, Chicony ADLX45UCCA2A
20V2.25A adapter
5A10K34716 *
Adatper, Type C Adatper, Chicony ADLX45UCCE2A
20V2.25A adapter
5A10K34720 *
Adatper, Type C Adatper, Chicony ADLX45UCCB2A
20V2.25A adapter
5A10K34719 *
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MIIX 720-12IKB 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 specications 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 specic 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.
71
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
specic environment.
Trademarks
The following terms are trademarks or registered trademarks of Lenovo in the
United States, other countries, or both.
Lenovo
Microsoft and Windows are trademarks of Microsoft Corporation in the United
States, other countries, or both.