Table of Contents
Lenovo 300e User Manual
Displayed below is the user manual for 300e by Lenovo which is a product in the Notebooks category. This manual has pages.
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Lenovo 300e
Hardware
Maintenance
Manual
Note: Before using this information and the product it supports, be sure to read the general information
under “Notices” on page 63.
First Edition (April. 2017)
© Copyright Lenovo 2017. 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.
© 2017 Lenovo
iii
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
Strategy for replacing a hard disk drive ............17
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 .........................22
Checking the battery pack ................................22
Related service information ...................... 23
Restoring the factory contents by using
recovery system ........................................... 23
Restore of factory default .................................23
Passwords .................................................... 24
Power-on password .......................................... 24
Hard-disk password .......................................... 24
Administrator password ....................................24
Power management ..................................... 25
Screen blank state ............................................ 25
Putting the computer to sleep or
shutting it down .................................................25
Putting your computer to sleep ......................... 25
Shutting down the computer ............................. 25
Lenovo 300e ................................................ 26
Specications ............................................... 26
Status indicators ........................................... 28
Fn key combinations/Hotkeys....................... 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 IO Board ..................................................37
1050 Touchpad button board ............................ 38
1060 Speaker ...................................................39
1070 Upper case ..............................................40
1080
System board ............................................ 42
1090 LCD cover ................................................45
1100 Pen holder ................................................46
1110 Hinges ...................................................... 47
1120 Camera board, sensor board and
LCD cable ......................................................... 49
Locations ...................................................... 52
Front and right-side view ..................................52
Bottom and left-side view ................................53
Parts list ........................................................ 54
Overall ..............................................................55
LCD FRUs ........................................................58
Miscellaneous parts .......................................... 59
AC adapters ......................................................59
Screws .............................................................. 59
Power cords ......................................................60
Notices......................................................... 63
Trademarks .................................................. 64
iv
About this manual
This manual contains service and reference information for the following
Lenovo product:
Lenovo 300e
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
products. Use this manual to troubleshoot problems eectively.
Before servicing a Lenovo product, make sure to read all the information under
“Safety information” on page 1 and “Important service information” on page 16.
1
Safety information
Safety information
This chapter presents the following safety information that you need to get
familiar with before you service a Lenovo 300e:
• “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 300e 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.
3
Safety information
Electrical safety
Observe the following rules when working on electrical equipments.
Important:
Use only approved tools and test equipments. Some hand tools have handles
covered with a soft material that does not insulate you when working with live
electrical currents.
Many customers have rubber floor mats near their machines that contain small
conductive bers to decrease electrostatic discharges. Do not use such kind of mat
to protect yourself from electrical shock.
• Find the room emergency power-o (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-o the wall box that supplies
power to the machine, and to lock the wall box in the o 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-o 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 o.
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Lenovo 300e 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 o the power.
– Send the victim to get medical aid.
5
Safety information
Safety inspection guide
The purpose of this inspection guide is to assist you in identifying potential
unsafe conditions. As each machine was designed and built, required safety
items were installed to protect users and service personnel from injury. This
guide addresses only those items. You should use good judgment to identify
potential safety hazards according to the attachment of non-Lenovo features or
options not covered by this inspection guide.
If any unsafe conditions are present, you must determine how serious the
apparent hazard could be and whether you can continue without 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 o, and the power cord disconnected.
Checklist:
1. Check exterior covers for damage (loose, broken, or sharp edges).
2. Turn o 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 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 300e 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 certied (ISO
9000) as fully eective.
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.
7
Safety information
Safety notices: multilingual translations
The safety notices in this section are provided in English, French, German,
Hebrew, Italian, Japanese, and Spanish.
Safety notice 1
Before the computer is powered on after FRU replacement, make sure all screws,
springs, and other small parts are in place and are not left loose inside the
computer. Verify this by shaking the computer and listening for rattling sounds.
Metallic parts or metal 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 eettuata 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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Lenovo 300e Hardware Maintenance Manual
Safety notice 2
DANGER
Some standby batteries contain a small amount of nickel and cadmium. Do not
disassemble a standby battery, recharge it, throw it into fire or water, or short-
circuit it. Dispose of the battery as required by local ordinances or regulations.
Use only the battery in the appropriate parts listing. Use of an incorrect battery can
result in ignition or explosion of the battery.
Certaines batteries de secours contiennent du nickel et du cadmium. Ne les
démontez pas, ne les rechargez pas, ne les exposez ni au feu ni à l’eau. Ne
les mettez pas en court-circuit. Pour les mettre au rebut, conformez-vous à la
réglementation en vigueur. Lorsque vous remplacez la pile de sauvegarde ou celle
de l’horloge temps réel, veillez à n’utiliser que les modèles cités dans la liste de
pièces détachées adéquate. Une batterie ou une pile inappropriée risque de prendre
feu ou d’exploser.
Die Bereitschaftsbatterie, die sich unter dem Diskettenlaufwerk befindet,
kann geringe Mengen Nickel und Cadmium enthalten. Sie darf nicht zerlegt,
wiederaufgeladen, kurzgeschlossen, oder Feuer oder Wasser ausgesetzt werden.
Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten. Beim
Ersetzen der Bereitschafts-oder Systembatterie nur Batterien des Typs verwenden,
der in der Ersatzteilliste aufgeführt ist. Der Einsatz falscher Batterien kann zu
Entzündung oder Explosion führen.
Alcune batterie di riserva contengono una piccola quantità di nichel e cadmio.
Non smontarle, ricaricarle, gettarle nel fuoco o nell’acqua né cortocircuitarle.
Smaltirle secondo la normativa in vigore (DPR 915/82, successive disposizioni e
disposizioni locali). Quando si sostituisce la batteria dell’RTC (real time clock) o
la batteria di supporto, utilizzare soltanto i tipi inseriti nell’appropriato Catalogo
parti. L’impiego di una batteria non adatta potrebbe determinare l’incendio o
l’esplosione della batteria stessa.
Algunas baterías de reserva contienen una pequeña cantidad de níquel y cadmio.
No las desmonte, ni recargue, ni las eche al fuego o al agua ni las cortocircuite.
Deséchelas tal como dispone la normativa local. Utilice sólo baterías que se
encuentren en la lista de piezas. La utilización de una batería no apropiada puede
provocar la ignición o explosión de la misma.
9
Safety information
Safety notice 3
DANGER
The battery pack contains small amounts of nickel. Do not disassemble it, throw
it into re or water, or short-circuit it. Dispose of the battery pack as required by
local ordinances or regulations. Use only the battery in the appropriate parts listing
when replacing the battery pack. Use of an incorrect battery can result in ignition
or explosion of the battery.
La batterie contient du nickel. Ne la démontez pas, ne l’exposez ni au feu ni à l’eau.
Ne la mettez pas en court-circuit. Pour la mettre au rebut, conformez-vous à la
réglementation en vigueur. Lorsque vous remplacez la batterie, veillez à n’utiliser
que les modèles cités dans la liste de pièces détachées adéquate. En effet, une
batterie inappropriée risque de prendre feu ou d’exploser.
Akkus enthalten geringe Mengen von Nickel. Sie dürfen nicht zerlegt,
wiederaufgeladen, kurzgeschlossen, oder Feuer oder Wasser ausgesetzt werden.
Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten. Beim
Ersetzen der Batterie nur Batterien des Typs verwenden, der in der Ersatzteilliste
aufgeführt ist. Der Einsatz falscher Batterien kann zu Entzündung oder Explosion
führen.
La batteria contiene piccole quantità di nichel. Non smontarla, gettarla nel fuoco
o nell’acqua né cortocircuitarla. Smaltirla secondo la normativa in vigore (DPR
915/82, successive disposizioni e disposizioni locali). Quando si sostituisce la
batteria, utilizzare soltanto i tipi inseriti nell’appropriato Catalogo parti. L’impiego
di una batteria non adatta potrebbe determinare l’incendio o l’esplosione della
batteria stessa.
Las baterías contienen pequeñas cantidades de níquel. No las desmonte, ni
recargue, ni las eche al fuego o al agua ni las cortocircuite. Deséchelas tal como
dispone la normativa local. Utilice sólo baterías que se encuentren en la lista de
piezas al sustituir la batería. La utilización de una batería no apropiada puede
provocar la ignición o explosión de la misma.
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Lenovo 300e Hardware Maintenance Manual
Safety notice 4
DANGER
The lithium battery can cause a fire, an explosion, or a severe burn. Do not
recharge it, remove its polarized connector, disassemble it, heat it above 100°C
(212°F), incinerate it, or expose its cell contents to water. Dispose of the battery as
required by local ordinances or regulations. Use only the battery in the appropriate
parts listing. Use of an incorrect battery can result in ignition or explosion of the
battery.
La pile de sauvegarde contient du lithium. Elle présente des risques d’incendie,
d’explosion ou de brûlures graves. Ne la rechargez pas, ne retirez pas son
connecteur polarisé et ne la démontez pas. Ne l’exposez pas à une temperature
supérieure à 100°C, ne la faites pas brûler et n’en exposez pas le contenu à l’eau.
Mettez la pile au rebut conformément à la réglementation en vigueur. Une pile
inappropriée risque de prendre feu ou d’exploser.
Die Systembatterie ist eine Lithiumbatterie. Sie kann sich entzünden, explodieren
oder schwere Verbrennungen hervorrufen. Batterien dieses Typs dürfen nicht
aufgeladen, zerlegt, über 100 C erhitzt oder verbrannt werden. Auch darf ihr
Inhalt nicht mit Wasser in Verbindung gebracht oder der zur richtigen Polung
angebrachte Verbindungsstecker entfernt werden. Bei der Entsorgung die örtlichen
Bestimmungen für Sondermüll beachten. Beim Ersetzen der Batterie nur Batterien
des Typs verwenden, der in der Ersatzteilliste aufgeführt ist. Der Einsatz falscher
Batterien kann zu Entzündung oder Explosion führen.
La batteria di supporto e una batteria al litio e puo incendiarsi, esplodere o
procurare gravi ustioni. Evitare di ricaricarla, smontarne il connettore polarizzato,
smontarla, riscaldarla ad una temperatura superiore ai 100 gradi centigradi,
incendiarla o gettarla in acqua. Smaltirla secondo la normativa in vigore (DPR
915/82, successive disposizioni e disposizioni locali). L’impiego di una batteria
non adatta potrebbe determinare l’incendio o l’esplosione della batteria stessa.
La batería de repuesto es una batería de litio y puede provocar incendios,
explosiones o quemaduras graves. No la recargue, ni quite el conector polarizado,
ni la desmonte, ni caliente por encima de los 100°C (212°F), ni la incinere ni
exponga el contenido de sus celdas al agua. Deséchela tal como dispone la
normativa local.
11
Safety information
Safety notice 5
If the LCD breaks and the uid from inside the LCD gets into your eyes or on your
hands, immediately wash the affected areas with water at least for 15 minutes.
Seek medical care if any symptoms caused by the uid are present after washing.
Si le panneau d’achage à cristaux liquides se brise et que vous recevez dans les
yeux ou sur les mains une partie du uide, rincez-les abondamment pendant au
moins quinze minutes. Consultez un médecin si des symptômes persistent après le
lavage.
Die Leuchtstoröhre 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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Lenovo 300e 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 susamment 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.
13
Safety information
Safety notice 8
DANGER
Before removing any FRU, turn o 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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Lenovo 300e Hardware Maintenance Manual
Laser compliance statement
Some models of Lenovo computer are equipped from the factory with an
optical storage device such as a CD-ROM drive or a DVD-ROM drive. Such
devices are also sold separately as options. If one of these drives is installed,
it is 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
Safety information
A CD-ROM drive, a DVD-ROM drive, or any other storage device installed may
contain an embedded Class 3A or Class 3B laser diode. Note the following:
DANGER
Emits visible and invisible laser radiation when open. Do not stare into the beam,
do not view directly with optical instruments, and avoid direct exposure to the
beam.
Radiação por raio laser ao abrir. Não olhe 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 geönetem 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
Lenovo 300e Hardware Maintenance Manual
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 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 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.
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 eect.
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.
18
Lenovo 300e 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 entirepageonremovingandreplacing
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.
• ReplaceanFRUonlywithanotherFRUofthecorrectmodel. 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
Lenovo 300e 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 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 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 o the computer.
2. Remove the battery pack.
3. Connect the AC adapter.
4. Make sure that power is supplied when you turn on the computer.
5. Turn o the computer.
6. Disconnect the AC adapter and install the charged battery pack.
7. Make sure that the battery pack supplies power when you turn on the
computer.
If you suspect a power problem, see the appropriate one of the following power
supply checkouts:
• “Checking the AC adapter” on page 21
• “Checking operational charging” on page 22
• “Checking the battery pack” on page 22
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:
1
2
Voltage (V DC)
+20
0
Pin
1
2
Note: Output voltage for the AC adapter pin No. 2 may dier 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 300e” on page 26.
Note: Noise from the AC adapter does not always indicate a defect.
22
Lenovo 300e Hardware Maintenance Manual
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.
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 o, replace the battery
pack.
If the charge indicator still does not light on, replace the system board. Then
reinstall the battery pack. If it is still not charged, go to the next section.
Checking the battery pack
Battery charging does not start until the Power Meter shows that less than 95%
of the total power remains; under this condition the battery pack can charge to
100% of its capacity. This protects the battery pack from being overcharged or
from having a shortened life.
To check your battery, move your cursor to the Power Meter icon in the icon
tray of the Windows® taskbar and wait for a moment (but do not click it), and the
percentage of battery power remaining is displayed. To get detailed information
about the battery, double-click the Power Meter icon.
Note: If the battery pack becomes hot, it may not be able to be charged.
Remove it from the computer and leave it at room temperature for a while. After
it cools down, reinstall and recharge it.
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 24
• “Power management” on page 25
Restoring the factory contents by using recovery system
Restore of factory default
The Lenovo 300e computer 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 the
recovery system. For details of the Recovery system, see the User Guide for
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.
24
Lenovo 300e 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
administrator 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 Lenovo 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.
Administrator password
Administrator password controls the access of the whole setup utility. Only
Administrator password was set then User password can be set. If Administrator
password was cleared, the User password was cleared too.
25
Related service information
Power management
Note: Power management modes are not supported for 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 o monitor” timer in the operating system expires, the
LCD backlight turns o. You can also turn o the LCD backlight by pressing .
To end screen blank state and resume normal operation, press .
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:
• Close the display lid.
• Press the Power button.
• Move the cursor to the lower-left corner, and then select the Start button.
Select → Sleep.
Attention: Put your computer to sleep before you move it. Moving your
computer while the hard disk 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.
• Press the Power button.
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:
• Move the cursor to the lower-left corner, and then select the Start button.
Select Power → Shut down.
• Right-click the Start button in the lower-left corner and select Shut down or
sign out → Shut down.
26
Lenovo 300e Hardware Maintenance Manual
Lenovo 300e
This chapter presents the following product-specific service references and
product-specic parts information:
• “Specications” on page 26
• “Status indicators” on page 28
• “Fn key combinations/Hotkeys” on page 29
• “FRU replacement notices” on page 30
• “Removing and replacing an FRU” on page 31
• “Locations” on page 52
• “Parts list” on page 54
Specications
The following table lists the specications of the Lenovo 300e:
Table 1. Specications
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.
Graphic memory
chip • Depends on CPU
Display • 11.6" 16:9, 1,366 × 768 pixels HD
Standard
memory • LPDDR4, on board (max 8 GB)
Storage devices • eMMC: 32 GB / 64 GB / 128 GB, on board
• SSD: 128 GB / 256 GB
I/O port • USB 3.0 × 1, USB 2.0 × 2
• Combo audio jack × 1
• HDMI port × 1
• Micro SD slot × 1
• Kensington mini security slot × 1
Audio • 3.5 mm Combo audio jack
• 1 W speaker × 2
Bluetooth
wireless • Combined in combo card
Keyboard • 6 rows Lenovo Keyboard
Integrated
camera • HD
Battery • Li-ion battery pack, 3 Cells, 45 Wh
AC adapter • 20 V DC, 45 W
27
Lenovo 300e
Table 1. Specications (continued)
Feature Description
Pre-installed
operating
system
• Windows® 10 Pro (National Academic only)
• Windows® 10 Pro with Downgrade Facilitation (National
Academic only)
• Windows® 10 Pro
• W10Home ETY NB 1drive
• W10Home SUNB
• W10 Home Value NB EM
• Win10 Home STD
28
Lenovo 300e Hardware Maintenance Manual
Status indicators
The system status indicators below show the computer status:
1 2
Table 2. Status indicators
Symbol Indicator
AC power
adapter
status
Indicator
status Meaning
1
Battery/
Charging
status
indicator
Disconnected
O
The computer is in hibernation mode
or turned o; The battery has more
than 20% charge.
Solid amber
The battery has between 5% and
20% charge.
Fast blinking
amber
The battery has between 1% and 5%
charge.
Connected
Slow blinking
amber
The battery is being charged. When
battery charge reaches 20%, the
blinking color changes to white.
Slow blinking
white
The battery has between 20% and
80% charge and is still charging.
When the battery reaches 80%
charge the light will stop blinking.
Solid white
The battery has more than 80%
charge, charging will continue until
the battery is fully charged.
2
Keyboard
lock
indicator
---
On
(solid white)
Enables the keyboard.
O
Disables the keyboard.
29
Lenovo 300e
Fn key combinations/Hotkeys
The following table shows the function of each combination of Fn with a
function key.
Table 3. Fn key combinations
Fn + PgUp: Activates the home key function.
Fn + PgDn: Activates the end key function.
You can access certain system settings quickly by pressing the appropriate
hotkeys.
Table 4. Hotkeys
: Mutes/unmutes the sound. : Enables/disables airplane
mode.
: Decreases the volume level. : Enables/disables the touch
pad.
: Increases the volume level. : Turns on/o the backlight of
the LCD screen.
: Closes the currently active
window. :
Toggles the display between
the computer and an external
device.
: Refreshes the desktop or the
currently active window. : Decreases display
brightness.
: Enables/disables the
keyboard. : Increases display brightness.
Note: If you changed the Hotkey Mode from Enabled to Disabled in the
BIOS setup utility, you will need to press the Fn key in combination with the
appropriate hotkey.
30
Lenovo 300e 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 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.
31
Lenovo 300e
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 30.
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 52.
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 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.
32
Lenovo 300e Hardware Maintenance Manual
1010 Base cover
Figure 1. Removal steps of base cover
Remove the screws 1 from the bottom.
1
1
1
1
1
1
1
1
1
1
1
Step Screw (quantity) Color Torque
1M2.5 × 5.5 mm, Phillips head, nylok-coated (11)
Lower to Upper
Black 2 kgf*cm
Use a plastic prying tool to aid in separation shown by arrows 2, 3, 4 and 5,
then remove the base cover 6.
2
3
4
5
6
33
Lenovo 300e
Note: Applying labels to the base cover
If you see any of the following labels on base cover, they need to be peeled
o from the old base cover, and put on the new base cover.
a Win10 label
b Rating label
c Print label
d BT/WL label
e India label
f Indonesia label
g Indonesia SDPPI 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, nd 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 gures:
abc
d
e
f
g
34
Lenovo 300e Hardware Maintenance Manual
1020 Battery pack
For access, remove this FRU:
• “1010 Base cover” on page 32
DANGER
Only use the battery specied in the parts list for your computer. Any other battery
could ignite or explode.
Figure 2. Removal steps of battery pack
Unplug the battery pack connector in the direction shown by arrow 1, remove
the screws 2, then remove the battery pack in the direction shown by arrow 3.
3
2
2
2
22
1
Step Screw (quantity) Color Torque
2M2 × 3 mm, Phillips head, nylok-coated (5)
Bty to Upper
Black 1.5 kgf*cm
When installing: Make sure that the battery connector is attached rmly.
35
Lenovo 300e
1030 PCI Express Mini Card for wireless LAN
For access, remove these FRUs in order:
• “1010 Base cover” on page 32
• “1020 Battery pack” on page 34
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 5.
Parts list—Overall” on page 56 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, gray) 1. Remove the screw 2.
2
1
Step Screw (quantity) Color Torque
2M2 × 3 mm, Phillips head, nylok-coated (1)
WLAN to Upper
Black 1.5 kgf*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.
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.
36
Lenovo 300e 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.
3
When installing:
• In models with a wireless LAN card that has two antenna connectors, plug
the black cable (1st) (MAIN) into the jack labeled MAIN, and the grey cable
(2nd) (AUX) into the jack labeled AUX 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
the jack labeled 3, and the white cable (2nd) (AUX) into the jack labeled 2 on
the card.
37
Lenovo 300e
1040 IO 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 IO board
Detach the IO board connector in the directions shown by arrows 1 and 2.
Remove the screw 3.
1
2
33
3
Step Screw (quantity) Color Torque
3M2 X 3 mm, Phillips head, nylok-coated (3)
IO board to C cover
Black 2 kgf*cm
Remove the IO board 4.
4
38
Lenovo 300e Hardware Maintenance Manual
1050 Touchpad button board
For access, remove these FRUs in order:
• “1010 Base cover” on page 32
• “1020 Battery pack” on page 34
Figure 5. Removal steps of touchpad button board
Peel o the tape 1.
1
Detach the touchpad button board connector in the directions shown by arrows
2 and 3. Remove the screw 4. Then remove the touchpad button board in
the directions shown by arrow 5.
5
2
3
4
4
Step Screw (quantity) Color Torque
4M2.5 X 3 mm, Phillips head, nylok-coated (2)
Touch pad module to upper
Black 2 kgf*cm
39
Lenovo 300e
1060 Speaker
For access, remove these FRUs in order:
• “1010 Base cover” on page 32
• “1020 Battery pack” on page 34
Figure 6. Removal step of speaker
Unplug the speaker connector in the direction shown by arrow 1. Release the
speaker cable from the cable guides. Remove the screws 2. Then remove the
two speakers 3.
2
2
2
2
1
3
3
Step Screw (quantity) Color Torque
2M2 × 3 mm, at-head, nylok-coated (4)
Speaker to Upper
Black 1.5 kgf*cm
When installing: Make sure that the connector is attached rmly.
40
Lenovo 300e Hardware Maintenance Manual
1070 Upper case
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 7. Removal steps of upper case
Peel o the tape 1.
1
1
1
Detach the LCD connector in the directions shown by arrows 2. Remove the
screws 3.
2
3
3
3
3
Step Screw (quantity) Color Torque
3M2.5 × 5 mm, Phillips head, nylok-coated (4)
Hinge to Upper
Black 2 kgf*cm
41
Lenovo 300e
Figure 7. Removal steps of upper case (continued)
Open the hinge in the direction shown by arrows 4.
4
4
Rotate the upper case in the direction shown by arrow 5. Then remove the
upper case.
5
42
Lenovo 300e Hardware Maintenance Manual
1080
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 Base cover” on page 32
• “1020 Battery pack” on page 34
• “1030 PCI Express Mini Card for wireless LAN” on page 35
• “1040 IO Board” on page 37
• “1050 Touchpad button board” on page 38
• “1060 Speaker” on page 39
• “1070 Upper case” on page 40
Figure 8. Removal steps of system board
Disconnect the touchpad connector in the directions shown by arrow 1 and 2.
1
2
43
Lenovo 300e
Figure 8. Removal steps of system board (continued)
Peel o the tape 3.
3
Detach the keyboard connectors in the directions shown by arrows 4 and 5.
Remove the screws 6.
4
5
6
6
66
6
Step Screw (quantity) Color Torque
6M2.5 × 3 mm, Phillips head, nylok-coated (5)
MB to Upper
Black 2 kgf*cm
When installing: Make sure that the connectors are attached rmly.
44
Lenovo 300e Hardware Maintenance Manual
Figure 8. Removal steps of system board (continued)
Remove the system board in the direction shown by arrow 7.
7
Unplug the RTC battery connector in the direction shown by arrow 8, then
remove the RTC battery..
8
When installing: Make sure that the connector is attached rmly.
45
Lenovo 300e
1090 LCD cover
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
• “1040 IO Board” on page 37
• “1050 Touchpad button board” on page 38
• “1060 Speaker” on page 39
• “1070 Upper case” on page 40
• “1080 System board” on page 42
Figure 9. Removal steps of LCD cover
Remove the screw pad 1, then remove the screws 2.
2
2
1
1
Step Screw (quantity) Color Torque
2M2.5 × 5 mm, Phillips head, nylok-coated (2)
LCD Hinge Cap to LCD cover
Black 2 kgf*cm
Turn over the LCD module. Use a plastic prying tool to aid in separation shown
by arrows 3, 4, 5 and 6. Then remove the LCD cover.
3
4
5
6
7
46
Lenovo 300e Hardware Maintenance Manual
1100 Pen holder
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
• “1040 IO Board” on page 37
• “1050 Touchpad button board” on page 38
• “1060 Speaker” on page 39
• “1070 Upper case” on page 40
• “1080 System board” on page 42
• “1090 LCD cover” on page 45
Figure 10. Removal steps of Pen holder
Remove the pen holder 1.
1
47
Lenovo 300e
1110 Hinges
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
• “1040 IO Board” on page 37
• “1050 Touchpad button board” on page 38
• “1060 Speaker” on page 39
• “1070 Upper case” on page 40
• “1080 System board” on page 42
• “1090 LCD cover” on page 45
• “1100 Pen holder” on page 46
Figure 11. Removal steps of hinges
Release the antenna from the hinge cap in the direction shown by arrow 1.
Remove the screws 2 and 3.
1
1
2
22
2
2
22
2
3
3
Step Screw (quantity) Color Torque
2M2 × 4 mm, Phillips head, nylok-coated (8)
Hinge to LCD cover
Black 1.5 kgf*cm
3M2.5 × 4 mm, Phillips head, nylok-coated (2)
Hinge to LCD cover
Silver 2 kgf*cm
48
Lenovo 300e Hardware Maintenance Manual
Figure 11. Removal steps of hinges (continued)
Release the two hinges in the direction shown by arrows 4.
4
4
49
Lenovo 300e
1120 Camera board, sensor board and LCD cable
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
• “1040 IO Board” on page 37
• “1050 Touchpad button board” on page 38
• “1060 Speaker” on page 39
• “1070 Upper case” on page 40
• “1080 System board” on page 42
• “1090 LCD cover” on page 45
• “1100 Pen holder” on page 46
• “1110 Hinges” on page 47
Figure 12. Removal steps of camera board, sensor board and LCD cable
Lift the camera board a little 1. Detach the connector in the direction shown by
arrow 2, then remove the camera board.
1
2
When installing: Place the integrated camera to the top center of the LCD
module and adjust the placement of it to make sure the connector is attached
rmly.
50
Lenovo 300e Hardware Maintenance Manual
Figure 12. Removal steps of camera board, sensor board and LCD cable
(continued)
Unplug the connector in the direction shown by arrow 3. Remove the screw 4.
4
3
Step Screw (quantity) Color Torque
4M2 × 2 mm, Phillips head, nylok-coated (1)
Sensor board to LCD
Silver 3±0.3 kgf*cm
Remove the sensor board 5.
5
Peel o the tap 6. Unplug the touch panel connector in the direction shown by
arrow 7. Lift the EDP cable latch in the direction shown by arrow 8. Unplug the
EDP cable in the direction shown by arrow 9.
8
9
6
7
51
Lenovo 300e
Figure 12. Removal steps of camera board, sensor board and LCD cable
(continued)
Remove the EDP cable in the direction shown by arrows j.
10
52
Lenovo 300e Hardware Maintenance Manual
Locations
Front and right-side view
a Integrated camera
b Built-in microphone
c Wireless LAN antennas
d Computer display
e Power button
f Novo button
g System status indicators
Note: For the description of each indicator, see “Status indicators” on page 28.
h Touchpad
i Combo audio jack
j USB port
k Kensington mini security slot
1
2
3
4
8
23
9
11
10
77
6
5
53
Lenovo 300e
Bottom and left-side view
a Speakers
b Micro SD card slot
c HDMI port
d USB 3.0 port
e AC power adapter jack
2
3
4
5
1
1
54
Lenovo 300e Hardware Maintenance Manual
Parts list
This section presents the following service parts:
• “Overall” on page 55
• “LCD FRUs” on page 58
• “Miscellaneous parts” on page 59
• “AC adapters” on page 59
• “Screws” on page 59
• “Power cords” on page 60
Note:
Each FRU is available for all types or models, unless specic types or models are
specied.
Attention:
DonotattempttoreplaceanFRUonyourown.IfanFRUisdamaged,contact
aLenovoauthorizedserviceroramarketingrepresentativeforreplacement
orrepair.Onlyqualiedtechnicianscaninspectorrepairthisproduct.
55
Lenovo 300e
Overall
2
3
5
1
4
6
9
10
11
a
7
8
56
Lenovo 300e Hardware Maintenance Manual
Table 5. Parts list—Overall
No.
FRU
FRU no. CRU
ID.
a See “Miscellaneous parts” on page 59.
1
LCD unit (see “LCD FRUs” on page 58.)
2
Upper Case ASM 3N 81AF W/KB US BK
5CB0P18543 N
2
Up Case ASM 3N 81AF W/KB CFEN BK
5CB0P18548 N
2
Upper Case ASM 3N 81AF W/KB UK BK
5CB0P18588 N
2
Upper Case ASM 3N 81AF W/KB USI BK
5CB0P18575 N
2
Upper Case ASM 3N 81AF W/KB ARA BK
5CB0P18586 N
2
Upper Case ASM 3N 81AF W/KB HEB BK
5CB0P18563 N
2
Upper Case ASM 3N 81AF W/KB ILD BK
5CB0P18584 N
2
Upper Case ASM 3N 81AF W/KB BEL BK
5CB0P18549 N
2
Upper Case ASM 3N 81AF W/KB DUT BK
5CB0P18590 N
2
Upper Case ASM 3N 81AF W/KB POR BK
5CB0P18577 N
2
Upper Case ASM 3N 81AF W/KB FR BK
5CB0P18567 N
2
Upper Case ASM 3N 81AF W/KB GE BK
5CB0P18594 N
2
Upper Case ASM 3N 81AF W/KB NOD BK
5CB0P18582 N
2
Upper Case ASM 3N 81AF W/KB SPA BK
5CB0P18587 N
2
Upper Case ASM 3N 81AF W/KB SW BK
5CB0P18550 N
2
Upper Case ASM 3N 81AF W/KB ITA BK
5CB0P18595 N
2
Upper Case ASM 3N 81AF W/KB FRARBK
5CB0P18559 N
3
Wacom ESP10110C5 D9.5 BK A Pen
5T70J33309 *
4
MB 3N 81AF N3350WIN UMA R2G32G
5B20P18583 N
4
MB 3N 81AF N3350WIN UMA R2G64G
5B20P18556 N
4
MB 3N 81AF N3350WIN UMA R2G128G
5B20P18581 N
4
MB 3N 81AF N3350WIN UMA R4G32G
5B20P18561 N
4
MB 3N 81AF N3350WIN UMA R4G64G
5B20P18566 N
4
MB 3N 81AF N3350WIN UMA R4G128G
5B20P18551 N
4
MB 3N 81AF N3350WIN UMA R8G32G
5B20P18545 N
4
MB 3N 81AF N3350WIN UMA R8G64G
5B20P18547 N
4
MB 3N 81AF N3350WIN UMA R8G128G
5B20P18557 N
4
MB 3N 81AF N3450WIN UMA R2G32G
5B20P18558 N
4
MB 3N 81AF N3450WIN UMA R2G64G
5B20P18572 N
4
MB 3N 81AF N3450WIN UMA R2G128G
5B20P18571 N
4
MB 3N 81AF N3450WIN UMA R4G32G
5B20P18546 N
4
MB 3N 81AF N3450WIN UMA R4G64G
5B20P18544 N
4
MB 3N 81AF N3450WIN UMA R4G128G
5B20P18585 N
4
MB 3N 81AF N3450WIN UMA R8G32G
5B20P18562 N
4
MB 3N 81AF N3450WIN UMA R8G64G
5B20P18580 N
4
MB 3N 81AF N3450WIN UMA R8G128G
5B20P18565 N
4
MB 3N 81AF N4200WIN UMA R2G32G
5B20P18569 N
4
MB 3N 81AF N4200WIN UMA R2G64G
5B20P18555 N
4
MB 3N 81AF N4200WIN UMA R2G128G
5B20P18553 N
4
MB 3N 81AF N4200WIN UMA R4G32G
5B20P18579 N
4
MB 3N 81AF N4200WIN UMA R4G64G
5B20P18552 N
4
MB 3N 81AF N4200WIN UMA R4G128G
5B20P18593 N
4
MB 3N 81AF N4200WIN UMA R8G32G
5B20P18574 N
4
MB 3N 81AF N4200WIN UMA R8G64G
5B20P18578 N
4
MB 3N 81AF N4200WIN UMA R8G128G
5B20P18560 N
5
USB BD 3N 80UR W/O cable
5C50L76064 N
57
Lenovo 300e
Table 5. Parts list—Overall (continued)
No.
FRU
FRU no. CRU
ID.
6
TP Button Board 3N 80UR W/cable
5C50L76072 N
7
WLAN, Intel 7260 2x2AC+BT PCIE M.2 WLAN V2
20200552 N
7
WLAN, Intel 8265 2x2AC+BT PCIE M.2 WLAN NV
SW10K97453 N
7
WLAN, Intel Snoweld Peak 2 8260 2*2ac+BT4.1
PCIE Non-Vpro M.2 Combo
SW10A11646 N
7
WLAN, Ltn NFA344A 2x2AC+BT4.x PCIE M.2
WLAN
SW10K97465 N
8
CMOS BATTERY 3N 81AF
5B10P18554 N
9
Speaker 3N 4Ω 1wx2 80UR
5SB0L08611 N
10
Battery, N22 CP/L L15C3PB0 11.4V45Wh3cell bty
5B10K90783 N
10
Battery, N22 SP/A L15M3PB2 11.25V45Wh3cell bty
5B10K90780 N
11
Lower case 3N 80UR
5CB0L76068 N
-
AC adapter (see “AC adapters” on page 59.)
58
Lenovo 300e Hardware Maintenance Manual
LCD FRUs
In Lenovo 300e, there are following types of LCDs.
• “11.6-in. HD/FHD LED”
4
3
2
1
5
6
7
8
59
Lenovo 300e
Table 6. Parts list—LCD FRUs
No. FRU FRU no. CRU
ID.
1 LCD Bezel Screw Pad 3N 81AF 5R60P18568 N
2 LCD Module 3N 81AF W/TP/Bezel 5D10P18564 N
3 Pen Holder 3N 81AF BLK 5M20P18570 N
4 CAM 3N 81AF WIN10 1M front W/mic 5C20P18589 N
5 LVDS Cable 3N 81AF 5C10P18573 N
6 Sensor Board 3N 80UR 5C50M11342 N
7 Hinge L+R 3N 80UR W/bracket 5H50L76089 N
8 LCD Cover 3N 81AF BLK 5CB0P18591 N
Miscellaneous parts
Table 7. Parts list—Miscellaneous parts
FRU P/N CRU
ID.
Cable miscellaneous parts:
• (a) IO Board Cable 3N 24pin 80UR 5C10L08679 N
Note: Italicized letters in parentheses are references to the exploded view in “Overall”
on page 55.
AC adapters
Table 8. Parts list—AC adapters
FRU P/N CRU
ID.
Chicony ADLX45NCC3A 20V2.25A adap R SA10M42771 *
Acbel ADLX45NAC3A 20V2.25A adap R SA10M42795 *
Screws
Table 9. Parts list—Screws
FRU P/N
CRU
ID.
Screw Pack 3N 81AF 5S10P18576 N
60
Lenovo 300e Hardware Maintenance Manual
Power cords
A Lenovo power cord for a specic country or region is usually available only in
that country or region:
Table 10. Parts list—3-pin power cords
P/N CRU
ID.
CCC
• LINETEK PC323+RVV300/300+LS15 1m
145000600 *
Argentina
• LINETEK LS15+H03VV-F+LP39 1m
145000599 *
Switzerland
• LINETEK LS15+H03VV-F+LP-37 1m
145000597 *
Brazil
• LINETEK LS15 H03VV-F LP26A 1m
145000596 *
Israel
• LINETEK LS15+H03VV-F+LP-41 1m
145000595 *
UL
• LINETEK LP-30B + SPT-2 + LS15 1m
145000594 *
UK
• LINETEK LP-61L+ H03VV-F+ LS15 1m
145000593 *
Indian
• LINETEK PE-361+ H05VV-F+ LS15 1m
145000592 *
Italy
• LINETEK LS15+H03VV-F+PE-336 1m
145000591 *
Korea
• LINETEK LS15+H05VV-F+LP-E04A 1m
145000590 *
Australia
• LINETEK LS15+H03VV-F+LP-23A 1m
145000589 *
Taiwan
• LINETEK LS15+VCTF+LP-53 1m
145000588 *
Japan
• LINETEK LS15+VCTF+LP-54 1m
145000587 *
Africa
• LINETEK LS15+H03VV-F+PE-364 1m
145000586 *
CE
• LINETEK LP-34+H03VV-F + LS15 1m
145000585 *
CCC
• Longwell LSG-31+RVV300/300+LS-18 1m
145000568 *
Argentina
• Longwell LP-24+H03VV-F+LS-18 1m
145000567 *
Switzerland
• Longwell LP-37+H03VV-F+LS-18 1m
145000565 *
Brazil
• Longwell LP-46+H03VV-F+LS-18 1m
145000564 *
Israel
• Longwell LP-41+H03VV-F+LS-18 1m
145000563 *
UL
• Longwell LP-30B+SPT-2 18AWG+LS-18 1m
145000562 *
UK
• Longwell LP-61L+H03VV-F+LS-18 1m
145000561 *
Indian
• Longwell LP-67+BIS+LS-18 1m
145000560 *
61
Lenovo 300e
P/N CRU
ID.
Italy
• Longwell LP-22+H03VV-F+LS-18 1m
145000559 *
Korea
• Longwell LP-486+KTLH03VV-F+LS-5 1m
145000558 *
Australia
• Longwell LP-23A+LFC-3R+LS-18 1m
145000557 *
Taiwan
• Longwell LP-71+VCTF+LS-33 1m
145000556 *
Japan
• Longwell LP-54+VCTF+LS-18 1m
145000555 *
Africa
• Longwell LP-39+H03VV-F+LS-18 1m
145000554 *
CE
• Longwell LP-34A+H03VV-F+LS-18 1m
145000553 *
CCC
• VOLEX GB10S3+RVV 300/500+VAC5S 1m
145000538 *
UL
• Volex US15S3+SPT-2 +VAC5S 1m
145000537 *
UK
• VOLEX MP5004+H03VV-F+VAC5S 1m
145000605 *
Switzerland
• VOLEX MP232+H03VV-F+VAC5S 1m
145000524 *
Italy
• VOLEX IT10S3+HO3VV-F+VAC5S 1m
145000535 *
Korea
• VOLEX M2511+KETI IEC+VAC5S 1m
145000533 *
Australia
• VOLEX AU10S3+H03VV-F+VAC5S 1m
145000532 *
Taiwan
• VOLEX TW15CS3+VCTF+VAC5S 1m
145000531 *
Japan
• VOLEX VAC5S+VCTF+M755 1m
145000530 *
Argentina
• VOLEX VA2073+H03VV-F+VAC5S 1m
145000528 *
Brazil
• VOLEX CH10S3+H03VV-F+VAC5S 1m
145000527 *
Israel
• VOLEX SI16S3+H03VV-F+VAC5S 1m
145000526 *
CE
• VOLEX M2511+HO3VV-F+VAC5S 1m
145000525 *
CCC
• lux 0036+RVV 300/300 0.75/3C+0002 1m
145500003 *
Argentina
• lux 0040+H03VV-F 0.75/3C+0011 1m
145500015 *
Switzerland
• lux 0027+H03VV-F 0.75/3C+0011 1m
145500013 *
Brazil
• lux 0034+H03VV-F 0.75/3C+0011 1m
145500011 *
Israel
• lux 0041+H03VV-F 0.75/3C+0011 1m
145500012 *
Table 10. Parts list—3-pin power cords (continued)
62
Lenovo 300e Hardware Maintenance Manual
P/N CRU
ID.
UL
• lux 0014+SPT-2 60 C 18/3C+0016 1m
145500002 *
Thailand
• lux 0014+H03VV-F 0.75/3C+0011 1m
5L60J33143 *
UK
• lux 0031+H03VV-F 0.75/3C+0011 1m
145500000 *
Indian
• lux 0046+IS694 0.75/3C+0011 1m
145500004 *
Italy
• lux 0029+H03VV-F 0.75/3C+0011 1m
145500009 *
Korea
• lux 0033+H03VV-F 0.75/3C+0011 1m
145500008 *
Australia
• lux 0038+H03VV-F 0.75/3C+0011 1m
145500006 *
Taiwan
• lux 0019+VCTF 0.75/3C+0021 1m
145500007 *
Japan
• lux 0018(E)+VCTF 0.75/3C+0021 1m
145500005 *
Africa
• lux 0044+H03VV-F 0.75/3C+0011 1m
145500010 *
CE
• lux 0033+H03VV-F 0.75/3C+0011 1m
145500001 *
Table 10. Parts list—3-pin power cords (continued)
63
Notices
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
aect 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.
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.
64
Lenovo 300e Hardware Maintenance Manual
Trademarks
Lenovo is a trademark or registered trademark of Lenovo in the United States,
other countries, or both.
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.