Lenovo YOGA 3 Pro-1370

Hardware
Maintenance
Manual
 Notes:
• Before using this information and the product it supports, be sure to read the general information under
“Notices” on page 60.

First Edition (August, 2014)

© Copyright Lenovo 2014. 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.
© 2014 Lenovo
Contents
About this manual........................................ iv 1070 SSD..........................................................40
1080 Mainboard.................................................41
Safety information......................................... 1 1090 LCD module..............................................43
1100 DC-in cable...............................................44
General safety................................................. 2
1110 Speakers and antennas............................45
Electrical safety............................................... 3 1120 Touch pad module.....................................46
Safety inspection guide................................... 5 1130 Mylar, hinge cover, LCD bezel..................47
Handling devices that are sensitive to 1140 Camera, sensor board, MIC board,
electrostatic discharge..................................... 6 vibrator, and LCD panel.....................................48
Grounding requirements.................................. 6 1150 LCD magnets............................................49
Safety notices: multilingual translations.......... 7 Locations....................................................... 50
Front view and right-side view...........................50
Bottom and Left-side view ................................51
Important service information.................... 14
Parts list......................................................... 52
Strategy for replacing FRUs.......................... 14 Overall...............................................................53
Strategy for replacing a hard disk drive.............15
LCD FRUs.........................................................56
Important notice for replacing a
Keyboard...........................................................57
system board ....................................................15
Screws...............................................................59
Important information about replacing AC adapters.......................................................59
RoHS compliant FRUs.................................. 16 USB cords.........................................................59

General checkout ....................................... 17 Notices......................................................... 60

What to do first.............................................. 18 Trademarks................................................... 61
Power system checkout................................ 19
Checking the AC adapter . ................................19
Checking operational charging..........................19

Related service information....................... 21

Restoring the factory contents by using
OneKey Recovery......................................... 21
Restore of factory default..................................21
Passwords..................................................... 22
Power-on password...........................................22
Hard-disk password...........................................22
Supervisor password.........................................22
Power management...................................... 23
Screen blank state.............................................23
Putting the computer to sleep or shutting it
down..................................................................23
Putting your computer to sleep..........................23
Shutting down the computer..............................24

Lenovo YOGA 3 Pro-1370........................... 26

Specifications................................................ 26
Status indicators............................................ 28
Fn key combinations..................................... 29
FRU replacement notices.............................. 30
Screw notices ...................................................30
Removing and replacing an FRU.................. 31
1010 Base cover................................................32
1020 Battery pack..............................................34
1030 PCI Express Mini Card for wireless
LAN....................................................................35
1040 Audio board..............................................37
1050 HDMI board..............................................38
1060 Fan and heat sink assembly.....................39

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About this manual
This manual contains service and reference information for the following
Lenovo product:
Lenovo YOGA 3 Pro-1370
Use this manual to troubleshoot problems.
The manual is divided into the following sections:
• The common sections provide general information, guidelines, and safety
information required for servicing computers.
• The product-specific section includes service, reference, and product-specific
parts information.

Important:
This manual is intended only for trained servicers who are familiar with Lenovo
products. Use this manual to troubleshoot problems effectively.
Before servicing a Lenovo product, make sure to read all the information under
“Safety information” on page 1 and “Important service information” on page 16.

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 Safety information

Safety information
This chapter presents the following safety information that you need to get
familiar with before you service a Lenovo YOGA 3 Pro-1370 computer:
• “General safety” on page 2
• “Electrical safety” on page 3
• “Safety inspection guide” on page 5
• “Handling devices that are sensitive to electrostatic discharge” on page 6
• “Grounding requirements” on page 6
• “Safety notices: multilingual translations” on page 7
• “Laser compliance statement” on page 14

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 Lenovo YOGA 3 Pro-1370 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.
• Please remove covers and other parts in a safe place, away from all
personnel, while you are servicing the machine.
• Keep your toolcase away from walk areas so that other people will not trip
over it.
• 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 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 switch or

electrical outlet. If an electrical accident occurs, you can then operate the
switch or unplug the power cord quickly.
• Do not work alone under hazardous conditions or near the equipment that
has hazardous voltages.
• Disconnect all power before:
– Performing a mechanical inspection
– Working near power supplies
– Removing or installing main units
• Before you start to work on the machine, unplug the power cord. If you
cannot unplug it, ask the customer to power-off the wall box that supplies
power to the machine, and to lock the wall box in the off position.
• If you need to work on a machine that has exposed electrical circuits,
observe the following precautions:
– Ensure that another person, familiar with the power-off controls, is near
you.
Attention: Another person must be there to switch off the power, if
necessary.
– Use only one hand when working with powered-on electrical equipment;
keep the other hand in your pocket or behind your back.
Attention: An electrical shock can occur only when there is a complete
circuit. By observing the above rule, you may prevent a current from
passing through your body.
– When using testers, set the controls correctly and use the approved
probe leads and accessories for that tester.
– Stand on suitable rubber mats (obtained locally, if necessary) to insulate
you from grounds such as metal floor strips and machine frames.
Observe the special safety precautions when you work with very high voltages;
instructions for these precautions are in the safety sections of maintenance
information. Be extremely careful when you measure the high voltages.
• Regularly inspect and maintain your electrical hand tools for safe operational
condition.
• Do not use worn or broken tools and testers.
• Never assume that power has been disconnected from a circuit. First, check
it to make sure that it has been powered off.

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 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

• Always look carefully for possible hazards in your work area. Examples of
these hazards are moist floors, nongrounded power extension cables, power
surges, and missing safety grounds.
• Do not touch live electrical circuits with the reflective surface of a plastic
dental mirror. The surface is conductive; such touching can cause personal
injury and machine damage.
• Do not service the following parts with the power on when they are removed
from their normal operating places in a machine:
– Power supply units
– Pumps
– Blowers and fans
– Motor generators
and similar units. (This practice ensures correct grounding of the units.)
• If an electrical accident occurs:
– Caution: do not become a victim yourself.
– Switch off the power.
– Send the victim to get medical aid.

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 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 features or
options not covered by this inspection guide.

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

Consider these conditions and the safety hazards they present:

• Electrical hazards, especially primary power (primary voltage on the frame
can cause serious or fatal electrical shock)
• Explosive hazards, such as a damaged CRT face or a bulging capacitor
• Mechanical hazards, such as loose or missing hardware

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

Checklist:
1. Check exterior covers for damage (loose, broken, or sharp edges).
2. Turn off the computer. Disconnect the power cord.
3. Check the power cord for:
a. A third-wire ground connector in good condition. Use a meter to measure
third-wire ground continuity for 0.1 ohm or less between the external
ground pin and the frame ground.
b. The power cord should be the type specified in the parts list.
c. Insulation must not be frayed or worn.
4. Check for cracked or bulging batteries.
5. Remove the cover.
6. Check for any obvious non-Lenovo alterations. Use good judgment as to the
safety of any non-Lenovo alterations.
7. Check inside the unit for any obvious unsafe conditions, such as metal
filings, contamination, water or other liquids, or signs of fire or smoke
damage.
8. Check for worn, frayed, or pinched cables.
9. Check that the power-supply cover fasteners (screws or rivets) have not
been removed or tampered with.

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 Lenovo YOGA 3 Pro-1370 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.

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 verified by a
certified 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 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.

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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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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.

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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.

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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 síntoma del fluido
despues de lavarse.

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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.

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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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Important service information

This chapter presents the following important service information:
• “Strategy for replacing FRUs” on page 16
– “Strategy for replacing a hard disk drive” on page 17
– “Important notice for replacing a system board” on page 17
• “Important information about replacing RoHS compliant FRUs” on page 18

Important:
BIOS and device driver fixes are customer-installable. The BIOS and device
drivers are posted on the customer support site: http://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 system board is replaced, ensure that the latest BIOS is loaded to the
system board before completing the service action.
To download software fixes, drivers, and BIOS, follow the steps below:
1. Go to http://support.lenovo.com.
2. Enter the serial number or select a product or use Lenovo smart
downloading.
3. Select the BIOS/Driver/Applications and download.
4. Follow the directions on the screen and install the necessary software.

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 Important service information

Use the following strategy to prevent unnecessary expense for replacing and
servicing FRUs:
• If you are instructed to replace an FRU, but the replacement does not solve
the problem, reinstall the original FRU before you continue.
• Some computers have both a processor board and a system board. If you
are instructed to replace either of them, and replacing one of them does not
solve the problem, reinstall that board, and then replace the other one.
• If an adapter or a device consists of more than one FRU, any of the FRUs
may be the cause of the error. Before replacing the adapter or device,
remove the FRUs one by one to see if the symptoms change. Replace only
the FRU that changed the symptoms.
Attention: The setup configuration on the computer you are servicing may
have been customized. Running Automatic Configuration may alter the
settings. Note the current configuration settings (using the View Configuration
option); then, when service has been completed, verify that those settings
remain in effect.

Strategy for replacing a hard disk drive

Always try to run a low-level format before replacing a hard disk drive. This
will cause all customer data on the hard disk to be lost. Make sure that the
customer has a current backup of the data before performing this action.
Attention: The drive startup sequence in the computer you are servicing may
have been changed. Be extremely careful during write operations such as
copying, saving, or formatting. If you select an incorrect drive, data or programs
can be overwritten.

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.

15
 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

Important information about replacing RoHS compliant FRUs

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

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

Lenovo plans to transit to RoHS compliance well before the implementation

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

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

Products marketed before June 2006 Products marketed after June 2006
Current or Replacement FRU Current or Replacement FRU
original part original part
Non-RoHS Can be Non-RoHS

Non-RoHS Can be RoHS

Must be RoHS Must 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.

16
 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.
• Carefully remove screws for reuse when replacing FRUs.
• Be extremely careful during such write operations as copying, saving, or
formatting. Drives in the computer that you are servicing sequence might
have been altered. If you select an incorrect drive, data or programs might be
overwritten.
• Replace an FRU only with another FRU of the correct model. When you
replace an FRU, make sure that the machine model and the FRU part number are
correct by referring to the FRU parts list.
• An FRU should not be replaced just because of a single, unreproducible
failure. Single failures can occur for a variety of reasons that have nothing to
do with a hardware defect, such as cosmic radiation, electrostatic discharge, or
software errors. Consider replacing an FRU only when a problem recurs. If you
suspect that an FRU is defective, clear the error logs and run the test again. If the
error does not recur, do not replace the FRU.
• Be careful not to replace a nondefective FRU.

17
 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

What to do first
When you do return an FRU, you must include the following information in the
parts exchange form or parts return form that you attach to it:
1. Name and phone number of servicer
2. Date of service
3. Date on which the machine failed
4. Date of purchase
5. Procedure index and page number in which the failing FRU was detected
6. Failing FRU name and part number
7. Machine type, model number, and serial number
8. Customer’s name and address

Note for warranty: During the warranty period, the customer may be
responsible for repair costs if the computer damage was caused by misuse,
accident, modification, unsuitable physical or operating environment, or
improper maintenance by the customer.
The following is a list of some common items that are not covered under
warranty and some symptoms that might indicate that the system was
subjected to stress beyond normal use.
Before checking problems with the computer, determine whether the damage is
covered under the warranty by referring to the following list:

The following are not covered under warranty:

• LCD panel cracked from the application of excessive force or from being
dropped
• Scratched (cosmetic) parts
• Distortion, deformation, or discoloration of the cosmetic parts
• Plastic parts, latches, pins, or connectors that have been cracked or broken
by excessive force
• Damage caused by liquid spilled into the system
• Damage caused by the improper insertion of a PC Card or the installation of
an incompatible card
• Improper disk insertion or use of an optical drive
• Diskette drive damage caused by pressure on the diskette drive cover,
foreign material in the drive, or the insertion of a diskette with multiple labels
• Damaged or bent diskette eject button
• Fuses blown by attachment of a nonsupported device
• Forgotten computer password (making the computer unusable)
• Sticky keys caused by spilling a liquid onto the keyboard
• Use of an incorrect AC adapter on laptop products

The following symptoms might indicate damage caused by nonwarranted

activities:
• Missing parts might be a symptom of unauthorized service or modification.
• If the spindle of a hard disk drive becomes noisy, it may have been subjected
to excessive force, or dropped.

18
 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 power supply checkout:
• “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 figure:

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 persists, go to “Lenovo YOGA 3 Pro-1370” on page 27.
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.

19
 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

Perform operational charging. If the battery status indicator or icon is not lit,
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 is still not lit, replace the system board.

20
 Related service information

Related service information

This chapter presents the following information:
• “Restoring the factory contents by using OneKey Recovery” on page 23
• “Passwords” on page 24
• “Power management” on page 25

Restoring the factory contents by using OneKey Recovery

Restore of factory default
The Lenovo YOGA 3 Pro-1370 computer comes with pre-installed OneKey
Recovery System.In order to save application files and the initial backed up
files 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 first boot up, just enter Lenovo OneKey Recovery System and run System
Recovery. For details of OneKey Recovery System, see the User Guide for
Lenovo OneKey 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.

21
 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

Passwords
As many as three passwords may be needed for any Lenovo computer: the
power-on password (POP), the hard disk password (HDP), and the supervisor
password.
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.

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.

Hard-disk password
There are two hard-disk passwords (HDPs):
+ User HDP - for the user
+ Master HDP - for the system administrator, who can use it to get access to
the hard disk drive even if the user has changed the user HDP
Attention: If the user HDP has been forgotten, check whether a master HDP
has been set. If it has, it can be used for access to the hard disk drive. If
no master HDP is available, neither Lenovo nor Lenov authorized service
technicians provide any services to reset either the user or the master HDP, or
to recover data from the hard disk drive. The hard disk drive can be replaced
for a scheduled fee.

Supervisor password
A supervisor password protects the system information stored in the BIOS. The
user must enter the supervisor password to get access to the BIOS and change
the system configuration.

Attention: If you forget the password, there is no service procedure to reset

the password. The system board must be replaced for a scheduled fee.

22
 Related service information

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

To reduce power consumption, the computer has two power management

modes: screen blank and sleep (standby).

Screen blank state

If the time set on the “Turn off monitor” timer in the operating system expires,
the LCD backlight turns off. You can also turn off the LCD backlight by
pressing Fn + `.

To end screen blank state and resume normal operation, press Fn + ↑.

Putting the computer to sleep or shutting it down

When you have finished 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 briefly, 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:
• Close the display lid.
• Press the Power button.
• Press and hold or right-click the Start button in the lower-left corner and
select Shut down → Sleep.
• Open the charms and then select Settings → 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 the computer, do one of the following:

• Press any key on the keyboard. (Notebook mode only)
• Press the Power button.
• Press the Windows button.

23
 Chapter 2. Starting to use Windows 8.1
Chapter 2. Starting to use Windows 8.1

Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

„ Shutting down the computer
„ Shutting down the computer
If you are not going to use your computer for a long time, shut it down.
IfTo
you aredown
shut
Shutting not
downgoing
yourtheto use yourdo
computer,
computer computer
one of theforfollowing:
a long time, shut it down.
To shut down your computer, do one of the following:
• OpenIfthe
you charms bartoand
are not going select
use your Settings
computer → Power
for a long time, shut it down. → Shut down.
• Open theTo shut down your
charms barcomputer, do one
and select of the following:→ Power
Settings → Shut down.
• Open the charms bar and select Settings → Power → Shut down.

• Right-click the Start button in the lower-left corner and select Shut down
• Right-click
• Right-click
or sign outthe→Startthe Start
Shut button
button
down. ininthe
the lower-left
lower-left corner
corner and Shut
and select down
select or down
Shut
sign out → Shut down.
or sign out → Shut down.

19
19

24
Chapter 2. Starting to use Windows 8.1 Related service information
Chapter 2. Starting to use Windows 8.1

• On the•Start screen, click

On the Start screen, click
and select Shut down.
and select
select Shut
• On the Start screen, click and Shutdown.
down.

Note: This operation depends on your BIOS settings. Please refer to the actual product.

Note: This
Note:operation depends
This operation depends on your
on your BIOS
BIOS settings.
settings. Please Please refer
refer to the toproduct.
actual the actual product.

20

20
25
 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

Lenovo YOGA 3 Pro-1370

This chapter presents the following product-specific service references and
product-specific parts information:
• “Specifications” on page 26
• “Status indicators” on page 28
• “Fn key combinations” on page 29
• “FRU replacement notices” on page 30
• “Removing and replacing an FRU” on page 31
• “Locations” on page 50
• “Parts list” on page 52

Specifications
The following table lists the specifications of the Lenovo YOGA 3 Pro-1370:
Table 1. Specifications

Feature Description
Processor View the system properties of your computer.You can do this as
follows: Open the Control Panel, and then select System and
Security → System.
Bus architecture • LP-DDR3
• PCI Express bus
• DMI
Graphic Chipset • Intel BDW GT2
Display • 13.3-inch
Standard
• LP-DDR3 (max 8 GB)
memory
CMOS • 256 bytes
SSD • 128 GB, 256 GB, 512 GB
Optical drive • NA
I/O port • Combo audio jack × 2
• Micro HDMI × 1
• USB 2.0 port × 1, USB 3.0 port × 2
• 2 in 1 card reader (SD/SDHC/SDXC/MMC)

26
 Lenovo YOGA 3 Pro-1370

Table 1. Specifications (continued)

Feature Description
Audio • 1/8" Stereo Headphone Output & Microphone input combo
jack
• Integrated Speakers Stereo × 2
• Built-in microphone × 2
PCI Express
Intel 802.11 A/C 2×2
Mini Card slot
Bluetooth
Combined in combo card
wireless
Keyboard 5 Rows, ISO Full Size Keyboard, Back-light
Touch pad Multi-touch type
Integrated
1.0 Mega or 720P HD
camera
Battery Li-Polymer, 44 Wh
AC adapter 20 V, 40 W
Pre-installed
operating Win8.1 (Windows Blue) (×64)
system

27
 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

Status indicators
The system status indicators below show the computer status:

ab

a Power button and Press this button to turn on the computer.

power status
indicator
Indicator Indicator status Meaning
On (solid white) The computer is powered on.
Power status Blinking The computer is in sleep mode.
indicator The computer is powered off or in
Off
hibernation mode.
b Battery status
indicator
Indicator Indicator status Meaning
The battery has more than 20%
On (solid white)
charge.
The battery has between 5% and 20%
Solid amber
charge.
Fast blinking amber The battery has less than 5% charge.
The battery is being charged. When
Battery status Slow blinking amber battery charge reaches 20%, the
indicator blinking color changes to white.
The battery has between 20% and
80% charge and is still charging. When
the battery reaches 80% charge the
Slow blinking white
light will stop blinking, but charging
will continue until the battery is fully
charged.

28
 Lenovo YOGA 3 Pro-1370

Fn key combinations
The following describes the features of each function key.

Fn + Esc: Switches to paper display mode.

Fn + 1: F1

Fn + 2: F2

Fn + 3: F3

Fn + 4: F4

Fn + 5: F5

Fn + 6: F6

Fn + 7: F7

Fn + 8: F8

Fn + 9: F9

Fn + 0: F10

Fn + -: F11

Fn + =: F12

Fn + Backspace: Closes the currently active window.

Fn + Delete: Enables/disables the touch pad.

Fn + `: Turns on/off the backlight of the LCD screen.

Fn + PgUp: Activates the pause function.

Fn + PgDn: Activates the break function.

Fn + PrtSc: Mutes/unmutes the sound.

Fn + ↑ / ↓: Increases/decreases display brightness.

Fn + → / ←: Increases/decreases sound volume.

Fn + Space: Enable/Disable the keyboard backlight.

Note: If you changed the HotKey Mode from Disabled to Enabled in the BIOS setup utility, there is
no need to press the Fn key. Only press the appropriate hotkey.

29
 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

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.

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 firmly to the torque shown in the table. Carefully remove
screws for reuse when replacing FRUs. Make sure that all screws are
tightened firmly.
• Ensure torque screwdrivers are calibrated correctly following country
specifications.

30
 Lenovo YOGA 3 Pro-1370

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 31.
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 58.
8. When replacing an FRU, use the correct screw as shown in the procedures.

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

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

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

31
 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

1010 Base cover

Figure 1. Removal steps of base cover

Remove the screws 1. Then remove the base cover 2.

1
1

1
1

1
1

1
1

Step Screw (quantity) Color Torque P/N

1 M2 × 3.3 mm, Torx, Silver 2.0~2.5 kgf*cm MA00000T6G0
nylok-coated (10)

32
 Lenovo YOGA 3 Pro-1370

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
labels:

The following labels need to be peeled off from the old base cover and put
on the new base cover.
a Rating label (WW or China)
b Rating label print
c BT label for US/CA/TW/Brazil/Indonesia/Israel/Malaysia
d WLAN label for US/CA/TW/Brazil/Indonesia/Israel/Malaysia
e KCC label
f Indonesia D side label

For some models, you also need to apply one or two FCC labels. Check the
old base cover; if it has one or two FCC labels, find duplicates of them in the
label kit and apply them to the new base cover.

For the location of each label, refer to the following figure:

c d
a b

f
e

33
 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

1020 Battery pack

For access, remove this FRU:

• “1010 Base cover” on page 33

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

Figure 2. Removal steps of battery pack

Unplug the battery connector 1 and remove the screws 2. Then remove the
battery pack in the direction shown by arrow 3.

2
2

1 2

Step Screw (quantity) Color Torque

2 M2 × 3.5 mm, cross-head, Black 1.5~2.0 kgf*cm
nylok-coated (6)

When installing: Make sure that the battery connector is attached firmly.

34
 Lenovo YOGA 3 Pro-1370

1030 PCI Express Mini Card for wireless LAN

For access, remove these FRUs in order:

• “1010 Base cover” on page 33
• “1020 Battery pack” on page 35

Figure 3. Removal steps of PCI Express Mini Card for wireless LAN
Disconnect the two wireless LAN cables (black, white) 1, and then remove the
screw 2.

Step Screw (quantity) Color Torque

2 M2 × 2.5 mm, cross-head, nylok-coated (1) Black 1.5~2.0 kgf*cm

Remove the card in the direction shown by arrow 3.

35
 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

In step 1, unplug the jacks by using the removal tool antenna RF connector
(P/N: 08K7159), or pick up the connectors with your fingers and gently unplug
them in the direction shown by the arrows.

Notes: The wireless LAN card has 2 cables in step 1.

The wireless LAN card in some models might have 3 cables in step 1.
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 white cable (2nd)
(AUX) into jack labeled 2 on the card.
• In models with a wireless LAN card that has three antenna connectors, plug
the black cable (1st) (MAIN) into the jack labeled 1, the grey cable (3rd) into
jack labeled 3, and the white cable (2nd) (AUX) into jack labeled 2 on the
card.

36
 Lenovo YOGA 3 Pro-1370

1040 Audio board

For access, remove these FRUs in order:

• “1010 Base cover” on page 32
• “1020 Battery pack” on page 34

Figure 4. Removal steps of audio board

Detach the connectors 1, 2, and 3 in sequence. Remove the screws D. Lift
the audio board in the direction shown by arrow E. Be careful not to damage
the connector.

5 2

Step Screw (quantity) Color Torque

D M2 × 3.5 mm, cross-head, nylok-coated (3) Black 1.5~2.0 kgf*cm

When installing: Make sure that the connectors are attached firmly.

37
 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

1050 HDMI board

For access, remove these FRUs in order:

• “1010 Base cover” on page 32
• “1020 Battery pack” on page 34
• “1030 PCI Express Mini Card for wireless LAN” on page 35

Figure 5. Removal steps of HDMI board

Release the antenna cables as shown below.

Remove the screws 1. Lift the HDMI board in the direction shown by arrow 2.

1
1

1
1

2
2

Step Screw (quantity) Color Torque

A M2 × 3.5 mm, cross-head, nylok-coated (2) Black 1.5~2.0 kgf*cm

38
 Lenovo YOGA 3 Pro-1370

1060 Fan and heat sink assembly

For access, remove these FRUs in order:

• “1010 Base cover” on page 32
• “1020 Battery pack” on page 34
• “1040 Audio board” on page 37

Figure 6. Removal steps of Fan and heat sink assembly

Remove the screws 1. Lift the fan and heat sink assembly in the direction
shown by arrow B. Be careful not to damage the connector.

1
1

1
2

Step Screw (quantity) Color Torque

A M2 × 2.5 mm, cross-head, nylok-coated (5) Black 1.5~2.0 kgf*cm

Attention: Do not handle the fan and heat sink assembly roughly. Improper
handling can cause distortion or deformation and imperfect contact with
components.

39
 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

1070 SSD

For access, remove these FRUs in order:

• “1010 Base cover” on page 32
• “1020 Battery pack” on page 34

Figure 7. Removal steps of SSD

Remove the screws 1. Lift the SSD in the direction shown by arrow B.

Step Screw (quantity) Color Torque

A M2 × 2.5 mm, cross-head, nylok-coated (1) Black 1.5~2.0 kgf*cm

40
 Lenovo YOGA 3 Pro-1370

1080 Mainboard

Important notices for handling the mainboard:

When handling the mainboard, bear the following in mind.
• Be careful not to drop the mainboard on a bench top that has a hard
surface, such as metal, wood, or composite.
• Avoid rough handling of any kind.
• During the whole process, make sure not to drop or stack the mainboard.
• If you put a mainboard 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 Base cover” on page 32
• “1020 Battery pack” on page 34
• “1040 Audio board” on page 37
• “1050 HDMI board” on page 38
• “1060 Fan and heat sink assembly” on page 39
• “1070 SSD” on page 40

41
 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

Figure 8. Removal steps of mainboard

Detach the connectors 1, B, C, and D. Remove the screws E. Be careful
not to damage the connector.

5
5
1

4
3

Step Screw (quantity) Color Torque

E M2 × 2.0 mm, cross-head, nylok-coated (4) Black 1.5~2.0 kgf*cm

Turn over the mainboard in the direction shown by arrow 1 and detach the
LCD FPC connector B. Be careful not to damage the connector.

When installing: Make sure that the connectors are attached firmly.

42
 Lenovo YOGA 3 Pro-1370

1090 LCD module

For access, remove these FRUs in order:

• “1010 Base cover” on page 32

Figure 9. Removal steps of LCD module

Remove the screws 1. Lift the LCD module in the direction shown by arrow B.

1
1
1
1

1
1
1
1

Step Screw (quantity) Color Torque

A M2 × 3.5 mm, cross-head, nylok-coated (8) Black 1.5~2.0 kgf*cm

43
 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

1100 DC-in cable

For access, remove these FRUs in order:

• “1010 Base cover” on page 32

Figure 10. Removal steps of DC-in cable

Remove the screws A. Lift the DC-in cable in the direction shown by arrow B.

1
1

Step Screw (quantity) Color Torque

A M2 × 2.5 mm, cross-head, nylok-coated (2) Black 1.5~2.0 kgf*cm

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 Lenovo YOGA 3 Pro-1370

1110 Speakers and antennas

For access, remove these FRUs in order:

• “1010 Base cover” on page 32
• “1020 Battery pack” on page 34
• “1030 PCI Express Mini Card for wireless LAN” on page 35

Figure 11. Removal steps of speakers and antennas

Remove the screws 1. Lift the speakers in the direction shown by arrow B.

2 1
1

Step Screw (quantity) Color Torque

A M2 × 4.0 mm, cross-head, nylok-coated (4) Black 1.5~2.0 kgf*cm

Figure 11. Removal steps of speakers and antennas

Detach the antennas in the direction shown by arrow 1.

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 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

1120 Touch pad module

For access, remove these FRUs in order:

• “1010 Base cover” on page 32
• “1020 Battery pack” on page 34

Figure 12. Removal steps of touch pad module

Remove the screws A. Lift the touch pad module in the direction shown by
arrow B.

1
1

Step Screw (quantity) Color Torque

A M2 × 2.5 mm, cross-head, nylok-coated (6) Black 1.5~2.0 kgf*cm

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 Lenovo YOGA 3 Pro-1370

1130 Mylar, hinge cover, LCD bezel

For access, remove these FRUs in order:

• “1010 Base cover” on page 32
• “1090 LCD module” on page 43

Figure 16. Removal steps of mylar, hinge cover, LCD bezel

Remove the mylar in the direction of arrow shown by 1.
Remove the eight screws B covered by the mylar.
Remove the LCD bezel in the direction of arrow shown by arrow C.
Remove the two screws D. Remove the hinge cover.

2
2
2
2

4
1 2
2
2
2

3
4

Step Screw (quantity) Color Torque

A, D M2 × 2.0 mm, cross-head, nylok-coated (10) Black 1.5~2.0 kgf*cm

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 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

1140 Camera, sensor board, MIC board, vibrator, and LCD

panel

For access, remove these FRUs in order:

• “1010 Base cover” on page 32
• “1090 LCD module” on page 43
• “1130 Mylar, hinge cover, LCD bezel” on page 47

Figure 17. Removal steps of camera, sensor board, MIC board, vibrator, and
LCD panel
Remove the vibrator 1. Detach connectors B, C, and F.
Remove the LCD panel connector in the direction as shown by arrow D.
Remove the camera and sensor board in the direction as shown by arrow E.

2 5

3
1 5

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 Lenovo YOGA 3 Pro-1370

1150 LCD magnets

For access, remove these FRUs in order:

• “1010 Base cover” on page 32
• “1090 LCD module” on page 43
• “1130 Mylar, hinge cover, LCD bezel” on page 47

Figure 18. Removal steps of LCD module

Remove the LCD magnets as shown below.

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 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

Locations
Front view and right-side view
1 Integrated camera
2 Multi-touch screen
3 Windows button
4 Built-in microphones
5 Wireless LAN antennas
6 Touch pad
7 Power button and power status indicator
8 Battery status indicator
Note: For the description of each indicator, see “Status indicators” on page 29.
9 Novo button
J Rotation lock button
K Volume buttons
L Micro HDMI port
M USB 3.0 port

1
2

5
4

6
13

5 12
11
10
9
8
7

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 Lenovo YOGA 3 Pro-1370

Bottom and Left-side view

1 Speakers
2 Memory card slot
3 Micro HDMI port
4 USB 3.0 port
E AC power adapter jack

5
4
3
2

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 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

Parts list
This section presents the following service parts:
• “Overall” on page 53
• “LCD FRUs” on page 56
• “Keyboard” on page 57
• “Screws” on page 59
• “AC adapters” on page 59
• “USB cords” on page 59

Notes:
• Each FRU is available for all types or models, unless specific types or models
are specified.

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 Lenovo YOGA 3 Pro-1370

Overall

10

11

5 12

13

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 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

Table 2. Parts list – Overall

No. FRU FRU no. CRU ID.

1 Lower Case L YOGA 3 Pro SV 5CB0G97363 N
1 Lower Case L YOGA 3 Pro Gold 5CB0G97336 N
1 Lower Case L YOGA 3 Pro Orange 5CB0G97350 N
2 Bach SP/A L13M4P71 7.6V44.8Wh 4cellBty 121500264 N
2 Bach SY/A L14S4P71 7.7V44Wh 4cellBty 121500267 N
3 Thermal Module L YOGA 3ProW/FAN 5H40G97367 N
4 Audio Board L YOGA 3 Pro 5C50G97364 N
5 Antenna L YOGA 3 Pro Honglin 5A30G97354 N
5 Antenna L YOGA 3 Pro Tyco 5A30G97368 N
6 Yoga3 Pro JBL BladeIV Speaker 5SB0G81146 N
7 Keyboard (see “Keyboard” on page 57.) N
7 Upper case L YOGA 3 ProW/KB/SCW BU 5CB0G97328 N
7 Upper case L YOGA 3 ProW/KB/SCW US 5CB0G97347 N
7 Upper case L YOGA 3 ProW/KB/SCW BZ 5CB0G97361 N
7 Upper case L YOGA 3 ProW/KB/SCWICE 5CB0G97376 N
7 Upper case L YOGA 3 ProW/KB/SCW JA 5CB0G97329 N
7 Upper case L YOGA 3 ProW/KB/SCW LA 5CB0G97345 N
7 Upper case L YOGA 3 ProW/KB/SCW UK 5CB0G97373 N
7 Upper case L YOGA 3 ProW/KB/SCW SA 5CB0G97325 N
7 Upper case L YOGA 3 ProW/KB/SCW IT 5CB0G97340 N
7 Upper case L YOGA 3 ProW/KB/SCW IN 5CB0G97355 N
7 Upper case L YOGA 3 ProW/KB/SCW CF 5CB0G97370 N
7 Upper case L YOGA 3 ProW/KB/SCW KO 5CB0G97321 N
7 Upper case L YOGA 3 ProW/KB/SCW NL 5CB0G97337 N
7 Upper case L YOGA 3 ProW/KB/SCW GK 5CB0G97353 N
7 Upper case L YOGA 3 ProW/KB/SCW SP 5CB0G97369 N
7 Upper case L YOGA 3 ProW/KB/SCW CH 5CB0G97320 N
7 Upper case L YOGA 3 ProW/KB/SCW HB 5CB0G97334 N
7 Upper case L YOGA 3 ProW/KB/SCW TR 5CB0G97352 N
7 Upper case L YOGA 3 ProW/KB/SCW SW 5CB0G97335 N
7 Upper case L YOGA 3 ProW/KB/SCW RU 5CB0G97351 N
7 Upper case L YOGA 3 ProW/KB/SCW FR 5CB0G97366 N
7 Upper case L YOGA 3 ProW/KB/SCW HG 5CB0G97319 N
7 Upper case L YOGA 3 ProW/KB/SCW TI 5CB0G97333 N
7 Upper case L YOGA 3 ProW/KB/SCWUSI 5CB0G97349 N
7 Upper case L YOGA 3 ProW/KB/SCW ND 5CB0G97323 N
7 Upper case L YOGA 3 ProW/KB/SCW PO 5CB0G97338 N
7 Upper case L YOGA 3 ProW/KB/SCW GR 5CB0G97360 N
7 Upper case L YOGA 3 ProW/KB/SCW CS 5CB0G97375 N
7 Upper case L YOGA 3 ProW/KB/SCW BE 5CB0G97327 N
7 Upper case L YOGA 3 ProW/KB/SCW AR 5CB0G97342 N
7 Upper case L YOGA 3 ProW/KB/SCWUSA 5CB0G97357 N
8 LCD unit (see “LCD FRUs” on page 56.) N

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 Lenovo YOGA 3 Pro-1370

Table 2. Parts list – Overall (continued)

No. FRU FRU no. CRU ID.

9 MB L YOGA 3 Pro NOK 5Y10 8G 5B20G97344 N
9 MB L YOGA 3 Pro W8S 5Y10 8G 5B20G97359 N
9 MB L YOGA 3 Pro W8P 5Y10 8G 5B20G97374 N
9 MB L YOGA 3 Pro NOK 5Y10 4G 5B20G97343 N
9 MB L YOGA 3 Pro W8S 5Y10 4G 5B20G97358 N
9 MB L YOGA 3 Pro W8P 5Y10 4G 5B20G97372 N
9 MB L YOGA 3 Pro NOK 5Y70 8G 5B20G97326 N
9 MB L YOGA 3 Pro W8S 5Y70 8G 5B20G97341 N
9 MB L YOGA 3 Pro W8P 5Y70 8G 5B20G97356 N
9 MB L YOGA 3 Pro NOK 5Y70 4G 5B20G97371 N
9 MB L YOGA 3 Pro W8S 5Y70 4G 5B20G97324 N
9 MB L YOGA 3 Pro W8P 5Y70 4G 5B20G97339 N
10 Intel 7265 2x2AC+BT PCIE M.2 WLAN SAR NV SW10A11522 N
10 Cbt BCM4352 2x2AC+BT4.0 PCIE M.2 WLAN 20200480 N
11 128G SSD, MZNTE128HMGR-000L2 16200609 N
11 128G SSD, L8T-128L9G 128GB M.2 5SD0F65755 N
11 256G SSD, MZNTE256HMHP-000L2 16200610 N
11 256G SSD, L8T-256L9G 256GB M.2 5SD0F65751 N
11 512G SSD, MZNTE512HMJH-000L2 16200611 N
12 HDMI Board L YOGA 3 Pro 5C50G97346 N
12 HDMI Board Cable L YOGA 3 Pro 5C10G97378 N
13 DC-IN Cable L YOGA 3 Pro 5C10G97330 N

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 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

LCD FRUs
In Lenovo YOGA 3 Pro-1370, the type of LCD is 13.3-inch high definition (HD).

2 9

Table 3. Parts list – 13.3-inch LCD FRUs

No. FRU FRU no. CRU ID.

1 LCD Module L YOGA 3ProW/LCD/AHVE 5D10G97569 N
2 MIC Board L YOGA 3 Pro W/Ahve 5C50G97332 N
3 EDP Cable L YOGA 3 Pro Luxshare 5C10G97348 N
3 EDP Cable L YOGA 3 Pro Sumitomo 5C10G97362 N
4 Camera L YOGA 3 Pro 720P HD 5C20G97570 N
5 Sensor Board L YOGA 3 Pro W/Ahve 5C50G97318 N
6 Hinge Cover L YOGA 3 Pro W/Mylar 5H50G97322 N
7 LCD Cover L YOGA 3 Pro SV 5CB0G97365 N
7 LCD Cover L YOGA 3 Pro Gold 5CB0G97317 N
7 LCD Cover L YOGA 3 Pro Orange 5CB0G97331 N
8 Bach_hinge_assy_AVC 5H50F98706 N
9 Magnet L YOGA 3 Pro S+N 5M20G97377 N

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 Lenovo YOGA 3 Pro-1370

Keyboard
Table 4. Parts list – Keyboard

FRU Language P/N CRU ID.

Arabic69KeyST3YBJMEBlackKeyKBD Arabic SN20F66296 N
Belgian70KeyST3YBJMEBlackKeyKBD Belgian SN20F66297 N
Bulgarian70KeyST3YBJMEBlackKeyKBD Bulgarian SN20F66301 N
Brazilian70KeyST3YBJMEBlackKeyKBD Brazil- SN20F66303
N
Portuguese
Iceland70KeyST3YBJMEBlackKeyKBD Icelandic SN20F66304 N
US69KeyST3YBJMEBlackKeyKBD English SN20F66305 N
LatinSpa70KeyST3YBJMEBlackKeyKBD La-Spanish SN20F66308 N
Japanese73KeyST3YBJMEBlackKeyKBD Japanese SN20F66310 N
Slovenian70KeyST3YBJMEBlackKeyKBD Slovenian SN20F66311 N
UK70KeyST3YBJMEBlackKeyKBD English-UK SN20F66312 N
India69KeyST3YBJMEBlackKeyKBD Hindi SN20F66313 N
CanadFrEn70KeyST3YBJMEBlackKeyKBD English- SN20F66316
N
French
Italian70KeyST3YBJMEBlackKeyKBD Italian SN20F66318 N
Dutch70KeyST3YBJMEBlackKeyKBD Dutch SN20F66319 N
Korean69KeyST3YBJMEBlackKeyKBD Korean SN20F66322 N
Spanish70KeyST3YBJMEBlackKeyKBD Spanish SN20F66324 N
Greek69KeyST3YBJMEBlackKeyKBD Greek SN20F66325 N
TradChine69KeyST3YBJMEBlackKeyKBD Traditional SN20F66328
N
Chinese
Hebrew69KeyST3YBJMEBlackKeyKBD Hebrew SN20F66331 N
Turkish70KeyST3YBJMEBlackKeyKBD Turkish SN20F66332 N
Russian69KeyST3YBJMEBlackKeyKBD Russian SN20F66336 N
Swiss70KeyST3YBJMEBlackKeyKBD Swiss SN20F66338 N
Hungarian70KeyST3YBJMEBlackKeyKBD Hungarian SN20F66339 N
Thailand69KeyST3YBJMEBlackKeyKBD Thai SN20F66340 N
French70KeyST3YBJMEBlackKeyKBD French SN20F66342 N
USInter69KeyST3YBJMEBlackKeyKBD English SN20F66346
N
International
Portugue70KeyST3YBJMEBlackKeyKBD Portuguese SN20F66347 N
German70KeyST3YBJMEBlackKeyKBD German SN20F66348 N
Nordic70KeyST3YBJMEBlackKeyKBD Nordic SN20F66349 N
Czh-Slk70KeyST3YBJMEBlackKeyKBD Czech- SN20F66354
N
Slovakian
German70KeyST3YBOKIBlackKeyKBD German SN20F66295 N
Belgian70KeyST3YBOKIBlackKeyKBD Belgian SN20F66298 N
Portugue70KeyST3YBOKIBlackKeyKBD Portuguese SN20F66299 N
India69KeyST3YBOKIBlackKeyKBD Hindi SN20F66300 N
Arabic69KeyST3YBOKIBlackKeyKBD Arabic SN20F66302 N
Iceland70KeyST3YBOKIBlackKeyKBD Icelandic SN20F66306 N

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 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual

Table 4. Parts list – Keyboard (continued)

FRU Language P/N CRU ID.

LatinSpa70KeyST3YBOKIBlackKeyKBD La-Spanish SN20F66307 N
Brazilian70KeyST3YBOKIBlackKeyKBD Brazil- SN20F66309
N
Portuguese
Slovenian70KeyST3YBOKIBlackKeyKBD Slovenian SN20F66314 N
CanadFrEn70KeyST3YBOKIBlackKeyKBD English- SN20F66315
N
French
Japanese73KeyST3YBOKIBlackKeyKBD Japanese SN20F66317 N
Korean69KeyST3YBOKIBlackKeyKBD Korean SN20F66320 N
UK70KeyST3YBOKIBlackKeyKBD English-UK SN20F66321 N
Dutch70KeyST3YBOKIBlackKeyKBD Dutch SN20F66323 N
TradChine69KeyST3YBOKIBlackKeyKBD Traditional SN20F66326
N
Chinese
Italian70KeyST3YBOKIBlackKeyKBD Italian SN20F66327 N
Swiss70KeyST3YBOKIBlackKeyKBD Swiss SN20F66329 N
Greek69KeyST3YBOKIBlackKeyKBD Greek SN20F66330 N
Russian69KeyST3YBOKIBlackKeyKBD Russian SN20F66333 N
Hebrew69KeyST3YBOKIBlackKeyKBD Hebrew SN20F66334 N
USInter69KeyST3YBOKIBlackKeyKBD English SN20F66335
N
International
Spanish70KeyST3YBOKIBlackKeyKBD Spanish SN20F66337 N
French70KeyST3YBOKIBlackKeyKBD French SN20F66341 N
Hungarian70KeyST3YBOKIBlackKeyKBD Hungarian SN20F66343 N
Turkish70KeyST3YBOKIBlackKeyKBD Turkish SN20F66344 N
Czh-Slk70KeyST3YBOKIBlackKeyKBD Czech- SN20F66345
N
Slovakian
Nordic70KeyST3YBOKIBlackKeyKBD Nordic SN20F66350 N
Thailand69KeyST3YBOKIBlackKeyKBD Thai SN20F66351 N
US69KeyST3YBOKIBlackKeyKBD English SN20F66352 N
Bulgarian70KeyST3YBOKIBlackKeyKBD Bulgarian SN20F66353 N

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 Lenovo YOGA 3 Pro-1370

Screws
Table 5. Parts list – screws

FRU P/N CRU ID.

Screw 2.0D 2.5L K 4.5D 0.5T ZK 5S10G99209 N

Screw 2.0D 4.0L K 6.0D 0.7T BNI 5S10G99211 N
Screw 2.0D 2.0L K 5.5D 0.5T BNI 5S10G99212 N
Screw 2.0D 3.0L K 3.5D 0.7T NL 5S10G99215 N

AC adapters
Table 6. Parts list – AC adapters

FRU P/N CRU ID.

Delta ADL40WDA 20V/5.2V 2A 40W adapter 36200561 *

Delta ADL40WDJ 20V/5.2V 2A 40W adapter 36200562 *
Delta ADL40WDB 20V/5.2V 2A 40W adapter 36200563 *
Delta ADL40WDD 20V/5.2V 2A 40W adapter 36200564 *
Delta ADL40WDG 20V/5.2V 2A 40W adapter 36200565 *
Delta ADL40WDE 20V/5.2V 2A 40W adapter 36200566 *
Delta ADL40WDC 20V/5.2V 2A 40W adapter 36200567 *
Chicony ADL40WCA 20V/5.2V 2A40W adapter 36200579 *
Chicony ADL40WCB 20V/5.2V 2A40W adapter 36200580 *
Chicony ADL40WCC 20V/5.2V 2A40W adapter 36200581 *
Chicony ADL40WCD 20V/5.2V 2A40W adapter 36200582 *
Chicony ADL40WCE 20V/5.2V 2A40W adapter 36200583 *
Chicony ADL40WCF 20V/5.2V 2A40W adapter 36200584 *
Chicony ADL40WCG 20V/5.2V 2A40W adapter 36200585 *

USB cords
Table 7. Parts list – USB cords

FRU P/N CRU ID.

Linetek fool proof USB 1.85m USB cord 145500119 *

Luxshare fool proof USB 1.85m USB cord 145500121 *

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 Lenovo YOGA 3 Pro-1370 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.

L E N O V O G R O U P LT D . P R O V I D E S T H I S P U B L I C AT I O N “ A S I S ”
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.

60
 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 trademarks or registered trademarks of Lenovo in the
United States, other countries, or both.

Lenovo
OneKey

Microsoft and Windows are trademarks of Microsoft Corporation in the United

States, other countries, or both.

Other company, products, or service names may be trademarks or service

marks of others.

61