Lenovo U300 U300S U400 Hmm En U300&U300s&U400 User Manual ハードウェア保守マニュアル Idea Pad U300s, U300, Laptop (ideapad)
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2015-11-23
User Manual: Lenovo U300 U300S U400 Hmm En ハードウェア保守マニュアル - IdeaPad U300s, U300, U400 U300s Laptop (ideapad) U300s Laptop (ideapad)
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- About this manual
- Safety information
- Important service information
- General checkout
- Related service information
- Lenovo IdeaPad U300/U300s/U400
- Specifications
- Status indicators
- Function key combinations
- FRU replacement notices
- Removing and replacing an FRU
- U300
- 1010 Base cover (U300)
- 1020 Battery pack (U300)
- 1030 Hard disk drive (U300)
- 1040 DIMM (U300)
- 1050 PCI Express Mini Card for wireless LAN (U300)
- 1060 Fan assembly and Heat Sink assembly (U300)
- 1070 System board (U300)
- 1080 Speakers and microphone (U300)
- 1090 LCD unit (U300)
- 1100 Keyboard and keyboard bezel (U300)
- U300s
- 1010 Base cover (U300s)
- 1020 Battery pack (U300s)
- 1030 Speakers (U300s)
- 1040 Solid State Disk (U300s)
- 1050 USB Board (U300s)
- 1060 Keyboard and keyboard bezel (U300s)
- 1070 PCI Express Mini Card for wireless LAN (U300s)
- 1080 LCD unit (U300s)
- 1090 DIMM (U300s)
- 1100 Fan assembly and Heat Sink assembly (U300s)
- 1110 System board (U300s)
- U400
- 1010 Base cover (U400)
- 1020 Battery pack (U400)
- 1030 Hard disk drive (U400)
- 1040 PCI Express Mini Card for wireless LAN (U400)
- 1050 System board (U400)
- 1060 USB board and HDD board (U400)
- 1070 Speakers and microphone (U400)
- 1080 Optical drive (U400)
- 1090 LCD unit (U400)
- 1100 Keyboard and keyboard bezel (U400)
- 1110 Fan assembly and Heat Sink assembly (U400)
- 1120 DIMM (U400)
- 1130 LCD front bezel (U400)
- 1140 LCD panel, hinges and LCD cable (U400)
- 1150 Integrated camera (U400)
- 1160 Antenna assembly and LCD cover (U400)
- Locations
- Parts list
- Notices

Lenovo IdeaPad U300/
U300s/U400
Hardware
Maintenance
Manual

Note:
Before using this information and the product it supports, be sure to read the general information under
“Notices” on page 127.
First Edition (Oct. 2011)
© Copyright Lenovo 2011. 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.
© 2011 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 .........................21
Related service information ...................... 23
Restoring the factory contents by using
OneKey Recovery ........................................ 23
Restore of factory default .................................23
Using recovery discs.........................................23
Passwords .................................................... 24
Power-on password ..........................................24
Supervisor password .......................................24
Power management ..................................... 25
Screen blank mode ...........................................25
Sleep (standby) mode ......................................25
Hibernation mode .............................................26
Lenovo IdeaPad U300/U300s/U400 ........... 27
Specications ............................................... 27
Status indicators ........................................... 29
Function key combinations ........................... 31
FRU replacement notices ............................. 32
Screw notices ..................................................32
Removing and replacing an FRU ................. 33
U300
1010 Base cover (U300) ...................................34
1020 Battery pack (U300) .................................36
1030 Hard disk drive (U300) .............................37
1040 DIMM (U300) ...........................................38
1050 PCI Express Mini Card for
wireless LAN (U300) .........................................39
1060 Fan assembly and Heat Sink
assembly (U300)...............................................41
1070
System board
(U300) ...............................43
1080 Speakers and microphone (U300) ...........46
1090 LCD unit (U300) .......................................48
1100 Keyboard and keyboard bezel (U300) .....50
U300s
1010 Base cover (U300s) .................................54
1020 Battery pack (U300s) ...............................56
1030 Speakers (U300s) ....................................57
1040 Solid State Disk (U300s) .........................58
1050 USB Board (U300s) .................................59
1060 Keyboard and keyboard bezel (U300s) ..... 60
1070 PCI Express Mini Card for
wireless LAN (U300s) .......................................64
1080 LCD unit (U300s) .....................................66
1090 DIMM (U300s) .........................................68
1100 Fan assembly and Heat Sink
assembly (U300s) .............................................69
1110
System board
(U300s) ..............................72
U400
1010 Base cover (U400) ...................................74
1020 Battery pack (U400) .................................76
1030 Hard disk drive (U400) .............................77
1040 PCI Express Mini Card for
wireless LAN (U400) .........................................78
1050
System board
(U400) ...............................80
1060 USB board and HDD board (U400) .........82
1070 Speakers and microphone (U400) ...........84
1080 Optical drive (U400) .................................86
1090 LCD unit (U400) .......................................87
1100 Keyboard and keyboard bezel (U400) .....89
1110 Fan assembly and Heat Sink
assembly (U400)...............................................90
1120 DIMM (U400) ...........................................92
1130 LCD front bezel (U400) ............................93
1140 LCD panel, hinges and
LCD cable (U400) ............................................94
1150 Integrated camera (U400) ........................ 96
1160 Antenna assembly and LCD
cover (U400) .....................................................97
Locations ...................................................... 98
Front view .........................................................98
Right-side view .................................................99
Bottom and Left-side view .............................100
Parts list ...................................................... 101
Overall ............................................................102
LCD FRUs ...................................................... 111
Keyboard ........................................................ 113
Miscellaneous parts ........................................ 116
AC adapters .................................................... 118
Power cords .................................................... 119
Notices....................................................... 127
Trademarks ................................................ 128

iv
About this manual
This manual contains service and reference information for the following
Lenovo IdeaPad product:
Lenovo IdeaPad U300/U300s/U400
Use this manual to troubleshoot problems.
The manual is divided into the following sections:
The common sections provide general information, guidelines, and safety •
information required for servicing computers.
The product-specic section includes service, reference, and product-specic •
parts information.
Important:
This manual is intended only for trained servicers who are familiar with Lenovo
IdeaPad products. Use this manual to troubleshoot problems effectively.
Before servicing a Lenovo IdeaPad product, make sure to read all the information
under “Safety information” on page 1 and “Important service information” on
page 16.

1
Safety information
Safety information
This chapter presents the following safety information that you need to get
familiar with before you service an Lenovo IdeaPad U300/U300s/U400
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

2
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
General safety
Follow these rules below to ensure general safety:
Observe a good housekeeping in the area where the machines are put •
during and after the maintenance.
When lifting any heavy object: •
1. Make sure that you can stand safely without slipping.
2. Distribute the weight of the object equally between your feet.
3. Use a slow lifting force. Never move suddenly or twist when you attempt
to lift it.
4. Lift it by standing or pushing up with your leg muscles; this action could
avoid the strain from the muscles in your back. Do not attempt to lift any
object that weighs more than 16 kg (35 lb) or that you think is too heavy
for you.
Do not perform any action that causes hazards to the customer, or that •
makes the machine unsafe.
Before you start the machine, make sure that other service representatives •
and the customer are not in a hazardous position.
Place removed covers and other parts in a safe place, keeping them away •
from all personnel, while you are servicing the machine.
Keep your toolcase away from walk areas so that other people will not trip it •
over.
Do not wear loose clothing that can be trapped in the moving parts of the •
machine. Make sure that your sleeves are fastened or rolled up above your
elbows. If your hair is long, fasten it.
Insert the ends of your necktie or scarf inside clothing or fasten it with the •
nonconductive clip, about 8 centimeters (3 inches) from the end.
Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for •
your clothing.
Attention: Metal objects are good electrical conductors.
Wear safety glasses when you are hammering, drilling, soldering, cutting •
wire, attaching springs, using solvents, or working in any other conditions
that may be hazardous to your eyes.
After service, reinstall all safety shields, guards, labels, and ground wires. •
Replace any safety device that is worn or defective.
Reinstall all covers correctly before returning the machine to the customer.•
Fan louvers on the machine help to prevent the overheating of internal •
components. Do not obstruct fan louvers or cover them with labels or
stickers.

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

4
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Always look carefully for possible hazards in your work area. Examples of •
these hazards are moist oors, nongrounded power extension cables, power
surges, and missing safety grounds.
Do not touch live electrical circuits with the reflective surface of a plastic •
dental mirror. The surface is conductive; such touching can cause personal
injury and machine damage.
Do not service the following parts with the power on when they are removed •
from their normal operating places in a machine:
– Power supply units
– Pumps
– Blowers and fans
– Motor generators
and similar units. (This practice ensures correct grounding of the units.)
If an electrical accident occurs:•
– Caution: do not become a victim yourself.
– Switch off the power.
– Send the victim to get medical aid.

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 IdeaPad
features or options not covered by this inspection guide.
If any unsafe conditions are present, you must determine how serious the
apparent hazard could be and whether you can continue without rst correcting
the problem.
Consider these conditions and the safety hazards they present:
Electrical hazards, especially primary power (primary voltage on the frame •
can cause serious or fatal electrical shock)
Explosive hazards, such as a damaged CRT face or a bulging capacitor•
Mechanical hazards, such as loose or missing hardware•
To determine whether there are any potential unsafe conditions, use the
following checklist at the beginning of every service task. Begin the checks with
the power off, and the power cord disconnected.
Checklist:
1. Check exterior covers for damage (loose, broken, or sharp edges).
2. Turn off the computer. Disconnect the power cord.
3. Check the power cord for:
a. A third-wire ground connector in good condition. Use a meter to measure
third-wire ground continuity for 0.1 ohm or less between the external
ground pin and the frame ground.
b. The power cord should be the type specied in the parts list.
c. Insulation must not be frayed or worn.
4. Check for cracked or bulging batteries.
5. Remove the cover.
6. Check for any obvious non-Lenovo IdeaPad alterations. Use good judgment
as to the safety of any non-Lenovo IdeaPad alterations.
7. Check inside the unit for any obvious unsafe conditions, such as metal
filings, contamination, water or other liquids, or signs of fire or smoke
damage.
8. Check for worn, frayed, or pinched cables.
9. Check that the power-supply cover fasteners (screws or rivets) have not
been removed or tampered with.

6
Lenovo IdeaPad U300/U300s/U400 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 effective.
When handling ESD-sensitive parts:
Keep the parts in protective packages until they are inserted into the product. •
Avoid contact with other people.•
Wear a grounded wrist strap against your skin to eliminate static on your •
body.
Prevent the part from touching your clothing. Most clothing is insulative and •
retains a charge even when you are wearing a wrist strap.
Use the black side of a grounded work mat to provide a static-free work •
surface. The mat is especially useful when handling ESD-sensitive devices.
Select a grounding system, such as those listed below, to provide protection •
that meets the specic service requirement.
Note:
The use of a grounding system to guard against ESD damage is desirable but not
necessary.
– Attach the ESD ground clip to any frame ground, ground braid, or green-
wire ground.
– When working on a double-insulated or battery-operated system, use an
ESD common ground or reference point. You can use coax or connector-
outside shells on these systems.
– Use the round ground prong of the ac plug on ac-operated computers.
Grounding requirements
Electrical grounding of the computer is required for operator safety and correct
system function. Proper grounding of the electrical outlet can be veried by a
certied electrician.

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 effettuata la sostituzione di una
FRU, accertarsi che tutte le viti, le molle e tutte le altri parti di piccole dimensioni
siano nella corretta posizione e non siano sparse all’interno dell’elaboratore.
Vericare ciò scuotendo l’elaboratore e prestando attenzione ad eventuali rumori;
eventuali parti o pezzetti metallici possono provocare cortocircuiti pericolosi.
Antes de encender el sistema despues de sustituir una FRU, compruebe que
todos los tornillos, muelles y demás piezas pequeñas se encuentran en su sitio
y no se encuentran sueltas dentro del sistema. Compruébelo agitando el sistema
y escuchando los posibles ruidos que provocarían. Las piezas metálicas pueden
causar cortocircuitos eléctricos.

8
Lenovo IdeaPad U300/U300s/U400 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.

10
Lenovo IdeaPad U300/U300s/U400 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’afchage 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 Leuchtstoffröhre im LCD-Bildschirm enthält Quecksilber. Bei der Entsorgung
die örtlichen Bestimmungen für Sondermüll beachten. Der LCD-Bildschirm
besteht aus Glas und kann zerbrechen, wenn er unsachgemäß behandelt wird
oder der Computer auf den Boden fällt. Wenn der Bildschirm beschädigt ist und
die darin befindliche Flüssigkeit in Kontakt mit Haut und Augen gerät, sollten
die betroffenen Stellen mindestens 15 Minuten mit Wasser abgespült und bei
Beschwerden anschließend ein Arzt aufgesucht werden.
Nel caso che caso l’LCD si dovesse rompere ed il liquido in esso contenuto
entrasse in contatto con gli occhi o le mani, lavare immediatamente le parti
interessate con acqua corrente per almeno 15 minuti; poi consultare un medico se i
sintomi dovessero permanere.
Si la LCD se rompe y el uido de su interior entra en contacto con sus ojos o sus
manos, lave inmediatamente las áreas afectadas con agua durante 15 minutos
como mínimo. Obtenga atención medica si se presenta algún síntoma del uido
despues de lavarse.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Safety notice 6
DANGER
To avoid shock, do not remove the plastic cover that protects the lower part of the
inverter card.
An d’éviter tout risque de choc électrique, ne retirez pas le cache en plastique
protégeant la partie inférieure de la carte d’alimentation.
Aus Sicherheitsgründen die Kunststoffabdeckung, die den unteren Teil der
Spannungswandlerplatine umgibt, nicht entfernen.
Per evitare scosse elettriche, non rimuovere la copertura in plastica che avvolge la
parte inferiore della scheda invertitore.
Para evitar descargas, no quite la cubierta de plástico que rodea la parte baja de la
tarjeta invertida.
Safety notice 7
DANGER
Though the main batteries have low voltage, a shorted or grounded battery can
produce enough current to burn personnel or combustible materials.
Bien que le voltage des batteries principales soit peu élevé, le court-circuit ou la
mise à la masse d’une batterie peut produire sufsamment de courant pour brûler
des matériaux combustibles ou causer des brûlures corporelles graves.
Obwohl Hauptbatterien eine niedrige Spannung haben, können sie doch bei
Kurzschluß oder Erdung genug Strom abgeben, um brennbare Materialien zu
entzünden oder Verletzungen bei Personen hervorzurufen.
Sebbene le batterie di alimentazione siano a basso voltaggio, una batteria in
corto circuito o a massa può fornire corrente sufficiente da bruciare materiali
combustibili o provocare ustioni ai tecnici di manutenzione.
Aunque las baterías principales tienen un voltaje bajo, una batería cortocircuitada
o con contacto a tierra puede producir la corriente suciente como para quemar
material combustible o provocar quemaduras en el personal.

13
Safety information
Safety notice 8
DANGER
Before removing any FRU, turn off the computer, unplug all power cords from
electrical outlets, remove the battery pack, and then disconnect any interconnecting
cables.
Avant de retirer une unité remplaçable en clientèle, mettez le système hors tension,
débranchez tous les cordons d’alimentation des socles de prise de courant, retirez
la batterie et déconnectez tous les cordons d’interface.
Die Stromzufuhr muß abgeschaltet, alle Stromkabel aus der Steckdose gezogen,
der Akku entfernt und alle Verbindungskabel abgenommen sein, bevor eine FRU
entfernt wird.
Prima di rimuovere qualsiasi FRU, spegnere il sistema, scollegare dalle prese
elettriche tutti i cavi di alimentazione, rimuovere la batteria e poi scollegare i cavi
di interconnessione.
Antes de quitar una FRU, apague el sistema, desenchufe todos los cables de
las tomas de corriente eléctrica, quite la batería y, a continuación, desconecte
cualquier cable de conexión entre dispositivos.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Laser compliance statement
Some models of Lenovo IdeaPad computer are equipped from the factory with
an optical storage device such as a CD-ROM drive or a DVD-ROM drive. Such
devices are also sold separately as options. If one of these drives is installed,
it is certied in the U.S. to conform to the requirements of the Department of
Health and Human Services 21 Code of Federal Regulations (DHHS 21 CFR)
Subchapter J for Class 1 laser products. Elsewhere, the drive is certified to
conform to the requirements of the International Electrotechnical Commission
(IEC) 825 and CENELEC EN 60 825 for Class 1 laser products.
If a CD-ROM drive, a DVD-ROM drive, or another laser device is installed, note
the following:
CAUTION
Use of controls or adjustments or performance of procedures other than those
specied herein might result in hazardous radiation exposure.
O uso de controles, ajustes ou desempenho de procedimentos diferentes daqueles
aqui especicados pode resultar em perigosa exposição à radiação.
Pour éviter tout risque d’exposition au rayon laser, respectez les consignes de
réglage et d’utilisation des commandes, ainsi que les procédures décrites.
Werden Steuer- und Einstellelemente anders als hier festgesetzt verwendet, kann
gefährliche Laserstrahlung auftreten.
L’utilizzo di controlli, regolazioni o l’esecuzione di procedure diverse da quelle
specicate possono provocare l’esposizione a.
El uso de controles o ajustes o la ejecución de procedimientos distintos de los aquí
especicados puede provocar la exposición a radiaciones peligrosas.
Opening the CD-ROM drive, the DVD-ROM drive, or any other optical storage
device could result in exposure to hazardous laser radiation. There are no
serviceable parts inside those drives. Do not open.

15
Safety information
A CD-ROM drive, a DVD-ROM drive, or any other storage device installed may
contain an embedded Class 3A or Class 3B laser diode. Note the following:
DANGER
Emits visible and invisible laser radiation when open. Do not stare into the beam,
do not view directly with optical instruments, and avoid direct exposure to the
beam.
Radiação por raio laser ao abrir. Não olhe fixo no feixe de luz, não olhe
diretamente por meio de instrumentos óticos e evite exposição direta com o feixe
de luz.
Rayonnement laser si carter ouvert. Évitez de fixer le faisceau, de le regarder
directement avec des instruments optiques, ou de vous exposer au rayon.
Laserstrahlung bei geöffnetem Gerät. Nicht direkt oder über optische Instrumente
in den Laserstrahl sehen und den Strahlungsbereich meiden.
Kinyitáskor lézersugár ! Ne nézzen bele se szabad szemmel, se optikai
eszközökkel. Kerülje a sugárnyalábbal való érintkezést!
Aprendo l’unità vengono emesse radiazioni laser. Non fissare il fascio, non
guardarlo direttamente con strumenti ottici e evitare l’esposizione diretta al fascio.
Radiación láser al abrir. No mire jamente ni examine con instrumental óptico el
haz de luz. Evite la exposición directa al haz.

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Lenovo IdeaPad U300/U300s/U400 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://consumersupport.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://consumersupport.lenovo.com/.
2. Enter a serial number or select a product or use Lenovo smart downloading.
3. Select the BIOS/Driver/Applications and download.
4. Follow the directions on the screen and install the necessary software.
17
Important service information
Use the following strategy to prevent unnecessary expense for replacing and
servicing FRUs:
If you are instructed to replace an FRU, but the replacement does not solve •
the problem, reinstall the original FRU before you continue.
Some computers have both a processor board and a system board. If you •
are instructed to replace either of them, and replacing one of them does not
solve the problem, reinstall that board, and then replace the other one.
If an adapter or a device consists of more than one FRU, any of the FRUs •
may be the cause of the error. Before replacing the adapter or device,
remove the FRUs one by one to see if the symptoms change. Replace only
the FRU that changed the symptoms.
Attention: The setup configuration on the computer you are servicing may
have been customized. Running Automatic Configuration may alter the
settings. Note the current conguration settings (using the View Conguration
option); then, when service has been completed, verify that those settings
remain in effect.
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.

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Lenovo IdeaPad U300/U300s/U400 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,readtheentirepageonremovingandreplacing
FRUs.
• WhenyoureplaceFRUs,usenewnylon-coatedscrews.
• Beextremely carefulduringsuchwrite 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.
• AnFRU should notbe replacedjustbecause of asingle, 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.
• BecarefulnottoreplaceanondefectiveFRU.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
What to do rst
When you do return an FRU, you must include the following information in the
parts exchange form or parts return form that you attach to it:
1. Name and phone number of servicer
2. Date of service
3. Date on which the machine failed
4. Date of purchase
5. Procedure index and page number in which the failing FRU was detected
6. Failing FRU name and part number
7. Machine type, model number, and serial number
8. Customer’s name and address
Note for warranty: During the warranty period, the customer may be
responsible for repair costs if the computer damage was caused by misuse,
accident, modification, unsuitable physical or operating environment, or
improper maintenance by the customer.
The following is a list of some common items that are not covered under
warranty and some symptoms that might indicate that the system was
subjected to stress beyond normal use.
Before checking problems with the computer, determine whether the damage is
covered under the warranty by referring to the following list:
The following are not covered under warranty:
LCD panel cracked from the application of excessive force or from being •
dropped
Scratched (cosmetic) parts•
Distortion, deformation, or discoloration of the cosmetic parts•
Plastic parts, latches, pins, or connectors that have been cracked or broken •
by excessive force
Damage caused by liquid spilled into the system•
Damage caused by the improper insertion of a PC Card or the installation of •
an incompatible card
Improper • disc insertion or use of an optical drive
Diskette drive damage caused by pressure on the diskette drive cover, •
foreign material in the drive, or the insertion of a diskette with multiple labels
Damaged or bent diskette eject button•
Fuses blown by attachment of a nonsupported device•
Forgotten computer password (making the computer unusable)•
Sticky keys caused by spilling a liquid onto the keyboard•
Use of an incorrect AC adapter on laptop products•
The following symptoms might indicate damage caused by nonwarranted
activities:
Missing parts might be a symptom of unauthorized service or modication. •
If the spindle of a hard disk drive becomes noisy, it may have been subjected •
to excessive force, or dropped.

21
General checkout
Power system checkout
To verify a symptom, follow the steps below:
1. Turn off the computer.
2. Connect the AC adapter.
3. Make sure that power is supplied when you turn on the computer.
4. Turn off the computer.
5. Disconnect the AC adapter.
6. Make sure that the battery pack supplies power when you turn on the
computer.
If you suspect a power problem, see the appropriate one of the following power
supply checkouts:
• “Checking the AC adapter ” on page 21
• “Checking operational charging” on page 21
Checking the AC adapter
You are here because the computer fails only when the AC adapter is used.
If the power-on indicator does not turn on, check the power cord of the AC •
adapter for correct continuity and installation.
If the computer does not charge during operation, go to • “Checking
operational charging”.
To check the AC adapter, follow the steps below:
1. Unplug the AC adapter cable from the computer.
2. Measure the output voltage at the plug of the AC adapter cable. See the
following gure:
2
1
Voltage (V DC)
+20
0
Pin
1
2
Note: Output voltage for the AC adapter pin No. 2 may differ from the one you
are servicing.
3. If the voltage is not correct, replace the AC adapter.
4. If the voltage is acceptable, do the following:
Replace the system board.•
If the problem continues, go to • “Lenovo IdeaPad U300/U300s/U400” 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.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Perform operational charging. If the battery status indicator or icon does not
light on, remove the battery pack and let it return to room temperature. Reinstall
the battery pack. If the charge indicator or icon is still off, replace the battery
pack.
If the charge indicator still does not light on, replace the system board. Then
reinstall the battery pack. If it is still not charged, go to the next section.

23
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 IdeaPad U300/U300s/U400 computers come with pre-installed
OneKey Rescue System.In order to save application les and the initial backed
up les of the system, the hard disk in a Lenovo computer includes a hidden
partition when it is shipped. If you need to restore the system to the point of
your rst boot up, just enter Lenovo OneKey Rescue System and run Restore
to factory default. For details of OneKey Rescue System, see the User Guide
for OneKey Rescue 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.
Using recovery discs
When you replace a hard disk drive in your computer, you are unable to use
the pre-installed Lenovo OneKey Recovery and OneKey Rescue. However, you
can use the recovery discs that store your backed up data to restore your new
hard drive to a previous backup status.
Note: You can create recovery discs by burning the backup image to a CD/DVD
as recovery discs. For details of Createrecoverydiscs, see the User Guide for
OneKey Rescue System.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
When you use the recovery discs to boot your computer, the system will enter
the user interface for system recovery automatically. Please follow the prompt
to insert the backup discs to complete the whole recovery process.
Note: The recovery process might take up to 2 hours.
Passwords
As many as two passwords may be needed for any Lenovo IdeaPad computer:
the power-on password (POP) and the supervisor password (SVP).
If any of these passwords has been set, a prompt for it appears on the screen
whenever the computer is turned on. The computer does not start until the
password is entered.
Exception: If only an SVP is installed, the password prompt does not appear
when the operating system is booted.
Power-on password
A power-on password (POP) protects the system from being powered on by
an unauthorized person. The password must be entered before an operating
system can be booted.
Supervisor password
A supervisor password (SVP) protects the system information stored in the
BIOS Setup Utility. The user must enter the SVP in order to get access to the
BIOS Setup Utility and change the system conguration.
Attention: If the SVP has been forgotten and cannot be made available to
the servicer, there is no service procedure to reset the password. The system
board must be replaced for a scheduled fee.

25
Related service information
Power management
Note: Power management modes are not supported for APM operating system.
To reduce power consumption, the computer has three power management
modes: screen blank, sleep (standby), and hibernation.
Screen blank mode
If the time set on the “Turn off monitor” timer in the operating system expires,
the LCD backlight turns off.
To end screen blank mode and resume normal operation, press any key.
Sleep (standby) mode
When the computer enters sleep (standby) mode, the following events occur in
addition to what occurs in screen blank mode:
The LCD is powered off.•
The hard disk drive is powered off.•
The CPU stops.•
To enter sleep (standby) mode, Click and select Sleep from the Start menu.
In certain circumstances, the computer goes into sleep (standby) mode
automatically:
If a “suspend time” has been set on the timer, and the user does not do any •
operation with the keyboard, the hard disk, the parallel connector, or the
diskette drive within that time.
If the battery indicator is amber, indicating that the battery power is low. •
(Alternatively, if Hibernate when battery becomes low has been selected
in the “Power Management Properties” window, the computer goes into
hibernation mode.)
To cause the computer to return from sleep (standby) mode and resume the
operation, do one of the following:
Press the Fn key.•
Turn on the power switch.•
Also, in the following event, the computer automatically returns from sleep
(standby) mode and resumes the operation:
The time set on the resume timer elapses.•
Note: The computer does not accept any input immediately after it enters
sleep (standby) mode. Wait a few seconds before taking any action to reenter
operation mode.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Hibernation mode
In hibernation mode, the following occurs:
The system status, RAM, VRAM, and setup data are stored on the hard disk.•
The system is powered off.•
To cause the computer to enter hibernation mode, follow the steps below:
If you are using the ACPI operating system and have defined one of the •
following actions as the event that causes the system to go into hibernation
mode, perform that action:
– Closing the lid.
– Pressing the power button.
For model U300s, to put the computer into the hibernation mode, click the Start
icon and select Sleep. The computer will enter the hibernation mode after it
remains in the sleep mode for 75 minutes.
Also, the computer goes into hibernation mode automatically in either of the
following conditions:
If a “hibernation time” has been set on the timer, and if the user does not do •
any operation with the keyboard, the hard disk drive, the parallel connector,
or the diskette drive within that time.
If the timer conditions are satised in suspend mode.•
When the power is turned on, the computer returns from hibernation mode and
resumes operation. The hibernation le in the boot record on the hard disk drive
is read, and system status is restored from the hard disk drive.

27
Lenovo IdeaPad U300/U300s/U400
Lenovo IdeaPad U300/U300s/U400
This chapter presents the following product-specific service references and
product-specic parts information:
• “Specications” on page 27
• “Status indicators” on page 29
• “Function key combinations” on page 31
• “FRU replacement notices” on page 32
• “Removing and replacing an FRU” on page 33
• “Locations” on page 98
• “Parts list” on page 101
Specications
The following table lists the specifications of the Lenovo IdeaPad U300/
U300s/U400 :
Table 1. Specications
Feature Description
Processor • Intel Core i SV Processors (Sandy Bridge) (BGA) (U300/U400)
• Intel Core ULV Processors (Sandy Bridge) (BGA) (U300s)
Core Chipset • Intel HM65 (U300)
• Intel QS67 (U300s)
• Intel HM65 (U400)
Bus architecture • U300/U300s:
FDI
DMI
1333MHz DDR3 bus
PCIE bus
• U400:
DMI BUS(5GT/S)
DDR3 1333
PCI-E
Graphic memory
chip
• Intel HM65 Intergrated (U300)
• Intel QS67 Intergrated (U300s)
• Intel HM65 Intergrated and ATI HD6470M with 1GBDDR3
VRAM (U400)
Display • 13.3" (205g) 16:9,1366x768 pixels HD WXGA (>220
nit),Glossy type White LED panel (U300/U300s )
• 14.0" (275g) 16:9,1366x768 pixels HD (>220 nit),Glossy type
White LED panel (U400)
Standard
memory
• DDR3-1066/1333MHz SODIMM × 1( max 4 GB) (Single
Channel) (U300/U300s)
• DDR3-1066/1333MHz SODIMM × 2 (max 8 GB) (Support
Dual Channel) (U400)
CMOS RAM • 256Byte (U300/U300s)
• 4M byte SPI ROM (U400)
Hard disk drive • 2.5-inch, 7 mm/9.5 mm SATA, HDD/SSD
• 32GB SSD+500GB/750GB, 5400rpm/7200rpm (U300/U400)
Optical drive • 2.5" External 9.5mm RAMBO (U400)

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Table 1. Specications (continued)
Feature Description
I/O port • Headphone mic combo jack
• RJ45 x 1 (U300/U400)
• HDMI port
• USB 2.0 port × 2, USB 3.0 port × 1 (U300/U400)
• USB 2.0 port × 1, USB 3.0 port × 1 (U300s)
MODEM slot • N/A
Audio • 1/8" Stereo Headphone Output & Microphone input combo
jack
• 2 x 1W speakers
• 1 x Internal digital Microphone
Ethernet (on the
system board)
• 10/100/1000M , Realtek RTL8111E-VB (U300)
• 10/100/1000M , Intel 82579V (U400)
PCI Express
Mini Card slot • 1 slot, support Intel 1030N card
Bluetooth
wireless • Built-in antenna with wireless card module for all Models
Keyboard • 6 Row, ISO Full Size Keyboard
Touch pad • Multi-touch type
Integrated
camera • 1.3 mega pixel camera
Battery • 59 Wh, 4 cells Li-Polymer battery (U300)
• 54 Wh, 4 cells Li-Polymer battery (U300s)
• 54 Wh, 4 cells or 6 cells Li-Polymer battery (U400)
AC adapter • 20V, 65W
Pre-installed
operating
system
• Win 7 Premium (32bit/64bit)

29
Lenovo IdeaPad U300/U300s/U400
Status indicators
The system status indicators below show the computer status:
U400
2
1
3
Table 2. Status indicators
Indicator Meaning
1Power on White: System is enabled.
Blinking white:
System is in sleep mode.
Off: System is in hibernate mode or shut down.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Table 2. Status indicators (continued)
Indicator Meaning
2Battery status Blinking amber: (500ms off/1s on)
The remaining power of the battery is less than 5%
of its capacity.
Blinking amber: (100ms off/3.2s on)
The battery is being charged with the remaining
power between 5% and 20% of its capacity.
Amber: The computer is operating on battery power with
the remaining power between 5% and 20% of its
capacity.
Blinking white:
The battery is being charged with the remaining
power between 20% and 80% of its capacity.
White: The remaining power of the battery is more than
80% of its capacity, or the computer is operating on
battery power with the remaining power between
20% and 80% of its capacity.
3Caps lock White: Caps Lock mode is enabled. You can enter all
alphabetic characters (A-Z) in uppercase without
pressing the Shift key. To enable or disable Caps
Lock mode, press the CapsLk key.

31
Lenovo IdeaPad U300/U300s/U400
Function key combinations
The following table shows the function of each combination of function key.
Table 3. Fn key combinations
Key combination Description
Fn + PrtSc: pop-up CD/DVD disk (U400 only).
Fn + Home: Activate the pause function.
Fn + End: Activate the break function.
Fn + PgUp: Enable/Disable the scroll lock.
Fn + PgDn: Activate the insert function.
Table 4. Hotkey
: Mute/Unmute the sound.
:Quick decrease volume level.
:Quick increase volume level.
: Close same function for main and secondary function.
: Refresh same function for main and secondary function.
: Enable/Disable the touchpad.
:Open the interface for integrated wireless devices settings
(on/off).
: Enable/Disable the microphone.
: Turn on/off the integrated camera.
:Open the interface for the display device switch to select
this notebook or an external display.
: Decrease display brightness.
: Increase display brightness.
Note: In the Hotkey mode, press Fn + F1~F12 to achieve the functions of
F1~F12.

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Lenovo IdeaPad U300/U300s/U400 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 IdeaPad computer,
this problem is addressed with special nylon-coated screws that have the
following characteristics:
They maintain tight connections.•
They do not easily come loose, even with shock or vibration.•
They are harder to tighten.•
Each one should be used only once.•
Do the following when you service this machine:
Keep the screw kit in your tool bag.•
Always use new screws.•
Use a torque screwdriver if you have one.•
Tighten screws as follows:
Plastic to plastic•
Turn an additional 90° after the screw head touches the surface of the
plastic part:
more than 90°
(Cross-section)
Logic card to plastic •
Turn an additional 180° after the screw head touches the surface of the
logic card:
more than 180°
(Cross-section)
Torque driver •
If you have a torque screwdriver , refer to the “Torque” column for each step.
Make sure that you use the correct screws. If you have a torque screwdriver, •
tighten all screws firmly to the torque shown in the table. Never use a
screw that you removed. Use a new one. Make sure that all screws are
tightened rmly.
Ensure torque screwdrivers are calibrated correctly following country •
specications.

33
Lenovo IdeaPad U300/U300s/U400
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 32.
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 98.
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.

34
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
U300
1010 Base cover (U300)
Note: Turn off the computer rst. Otherwise, it may cause permanent damage
to the computer.
Figure 1. Removal steps of base cover
Open the rubbers and remove two screws 1, then remove the base cover in
the direction shown by arrow 2 3.
1
1
2
3
Step Screw (quantity) Color Torque
1M2.5 × 6 mm, at-head, nylok-coated (2) Black 3.0 ± 0.2 kgfcm

35
Lenovo IdeaPad U300/U300s/U400
Note: Applying labels to the base cover
The new base cover FRU is shipped with a kit containing labels of several
kinds. When you replace the base cover, you need to apply the following
label:
The following labels need to be peeled off from the old base cover, and need
to be put on the new base cover.
a COA Label
b Brazil label
c WLAN label for Malaysia
d WLAN label for Indonesia
e GWE for china
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 gure:
a
b
c
d
e

36
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1020 Battery pack (U300)
For access, remove this FRU:
• “1010 Base cover (U300)” on page 34
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
Detach the battery pack connector in the direction shown by arrow 1, remove
five screws 2, and then remove the battery pack in the direction shown by
arrow 3.
2
2
2
2
3
1
2
Step Screw (quantity) Color Torque
2M2 × 4 mm, at-head, nylok-coated (5) Black 1.5 ± 0.2 kgfcm
When installing: Make sure the battery pack connector is attached rmly.

37
Lenovo IdeaPad U300/U300s/U400
1030 Hard disk drive (U300)
For access, remove these FRUs in order:
• “1010 Base cover (U300)” on page 34
• “1020 Battery pack (U300)” on page 36
Attention:
• Donotdroptheharddiskdriveorapply anyphysical shockto it. The hard
disk drive is sensitive to physical shock. Improper handling can cause damages
and permanent loss of data.
• Before removing the drive, suggest the customer to backup all the information on
it if possible.
• Never remove the drive while the system is operating or is in suspend mode.
Figure 3. Removal steps of hard disk drive
Lift the HDD a little, detach the HDD connector in the direction shown by arrow
1, and then remove the hard disk drive from the slot in the direction shown by
arrow 2.
11
2
When installing: Make sure that the HDD connector is attached rmly.

38
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1040 DIMM (U300)
For access, remove these FRUs in order:
• “1010 Base cover (U300)” on page 34
• “1020 Battery pack (U300)” on page 36
Figure 4. Removal steps of DIMM
Release the two latches on both edges of the socket at the same time in the
direction shown by arrows 1, and then unplug the DIMM in the direction shown
by arrow 2.
2
1
1
When installing: Insert the notched end of the DIMM into the socket. Push the
DIMM rmly, and pivot it until it snaps into the place. Make sure that it is rmly
xed in the slot and difcult to be moved.

39
Lenovo IdeaPad U300/U300s/U400
1050 PCI Express Mini Card for wireless LAN (U300)
For access, remove these FRUs in order:
• “1010 Base cover (U300)” on page 34
• “1020 Battery pack (U300)” on page 36
• “1030 Hard disk drive (U300)” on page 37
Figure 5. Removal steps of PCI Express Mini Card for wireless LAN
2
1
Disconnect the two wireless LAN cables (black, white) 1, and then remove the
screw 2.
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 arrows.
Notes: wireless LAN card has 2 cables in step 1.
wireless LAN card in some models may have 3 cables in step 1.
Step Screw (quantity) Color Torque
2M2 × 3 mm, at-head, nylok-coated (1) White 1.5 ± 0.2 kgfcm

40
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Figure 5. 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 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.

41
Lenovo IdeaPad U300/U300s/U400
1060 Fan assembly and Heat Sink assembly (U300)
For access, remove these FRUs in order:
• “1010 Base cover (U300)” on page 34
• “1020 Battery pack (U300)” on page 36
• “1030 Hard disk drive (U300)” on page 37
• “1050 PCI Express Mini Card for wireless LAN (U300)” on page 39
Figure 6. Removal steps of fan assembly and heat sink assembly
Detach two fan connectors in the direction shown by arrows 1, remove four
screws 2 and four screws 3.
2
2
3
3
3
1
1
When installing: Make sure that the fan connector is attached firmly to the
system board.
Step Screw (quantity) Color Torque
2M2 × 3 mm, at-head, nylok-coated (4) White 1.5 ± 0.2 kgfcm
3M2 × 4 mm, at-head, nylok-coated (4) Black 1.5 ± 0.2 kgfcm

42
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Figure 6. Removal steps of fan assembly and heat sink assembly (continued)
Lift the fan assembly and heat sink assembly in the direction shown by arrow 4.
Be careful not to damage the connector.
4
4
Attention: Do not handle the heat sink assembly roughly. Improper handling
can cause distortion or deformation and imperfect contact with components.
a
When installing:
Before you attach the fan assembly to the computer, apply thermal grease, •
at an amount of 0.2 grams, to the a part shown in the gure above. Either
too much or too less grease application can cause a thermal problem due to
imperfect contact with a component.

43
Lenovo IdeaPad U300/U300s/U400
1070
System board
(U300)
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 (U300)” on page 34
• “1020 Battery pack (U300)” on page 36
• “1030 Hard disk drive (U300)” on page 37
• “1050 PCI Express Mini Card for wireless LAN (U300)” on page 39
• “1060 Fan assembly and Heat Sink assembly (U300)” on page 41

44
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Figure 7. Removal steps of system board
Detach eight connectors on system board in the direction shown by arrows 1
2 3. Remove six screws 4 and one screw 5.
2
3
2
1
2
12
3
4
44
44
5
When installing: Make sure that all the connectors are attached rmly.
Step Screw (quantity) Color Torque
4M2 × 2.5 mm, at-head, nylok-coated (6) White 1.5 ± 0.2 kgfcm
5M2 × 5 mm, at-head, nylok-coated (1) White 1.5 ± 0.2 kgfcm

45
Lenovo IdeaPad U300/U300s/U400
Figure 7. Removal steps of system board (continued)
Lift the system board in the direction shown by arrow 6. Detach the keyboard
connector under system board in the direction shown by arrows 7 8.Then
remove the system board.
6
7
8

46
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1080 Speakers and microphone (U300)
For access, remove these FRUs in order:
• “1010 Base cover (U300)” on page 34
• “1020 Battery pack (U300)” on page 36
• “1030 Hard disk drive (U300)” on page 37
• “1050 PCI Express Mini Card for wireless LAN (U300)” on page 39
• “1060 Fan assembly and Heat Sink assembly (U300)” on page 41
• “1070 System board (U300)” on page 43
Figure 8. Removal steps of speakers and microphone
Remove four screws 1.
1
1
1
1
Step Screw (quantity) Color Torque
1M2 × 3 mm, at-head, nylok-coated (4) White 1.5 ± 0.2 kgfcm
Remove the speakers 2.
2
2
When installing: Make sure that the speakers connector is attached rmly.

47
Lenovo IdeaPad U300/U300s/U400
Figure 8. Removal steps of the speakers and microphone (continued)
Remove the microphone in the direction shown by arrow 3.
3
When installing: Make sure that the microphone connector is attached rmly.

48
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1090 LCD unit (U300)
For access, remove these FRUs in order:
• “1010 Base cover (U300)” on page 34
• “1020 Battery pack (U300)” on page 36
• “1030 Hard disk drive (U300)” on page 37
• “1050 PCI Express Mini Card for wireless LAN (U300)” on page 39
• “1060 Fan assembly and Heat Sink assembly (U300)” on page 41
• “1070 System board (U300)” on page 43
• “1080 Speakers and microphone (U300)” on page 46
Figure 9. Removal steps of LCD unit
Lift the LCD bezel with ngers in the direction shown by arrows 1. Remove
four screws 2.
1

49
Lenovo IdeaPad U300/U300s/U400
Figure 9. Removal steps of LCD unit (continued)
2
2
2
2
Step Screw (quantity) Color Torque
2M2.5 × 6 mm, at-head, nylok-coated (4) Black 3.0 ± 0.2 kgfcm
When installing:
Route the antenna cables along the cable guides. As you route the cables, •
make sure that they are not subjected to any tension. Tension could cause
the cables to be damaged by the cable guides, or a wire to be broken.
Make sure that the LCD connector is attached rmly and make sure that you •
do not pinch the antenna cables when you attach the LCD assembly. Route
the LCD cable along the cable guides.
Remove the LCD unit in the direction shown by arrows 3.
3
3

50
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1100 Keyboard and keyboard bezel (U300)
For access, remove these FRUs in order:
• “1010 Base cover (U300)” on page 34
• “1020 Battery pack (U300)” on page 36
• “1030 Hard disk drive (U300)” on page 37
• “1050 PCI Express Mini Card for wireless LAN (U300)” on page 39
• “1060 Fan assembly and Heat Sink assembly (U300)” on page 41
• “1070 System board (U300)” on page 43
• “1080 Speakers and microphone (U300)” on page 46
• “1090 LCD unit (U300)” on page 48
Figure 10. Removal steps of keyboard and keyboard bezel
Remove the AC power adapter jack connector in the direction shown by arrow 1.
1

51
Lenovo IdeaPad U300/U300s/U400
Figure 10. Removal steps of keyboard and keyboard bezel (continued)
Remove two screws 2, release the power button in the direction shown by
arrows 3.
2
2
3
Step Screw (quantity) Color Torque
2M2 × 3 mm, at-head, nylok-coated (2) Black 1.5 ± 0.2 kgfcm

52
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Figure 10. Removal steps of keyboard and keyboard bezel (continued)
Remove the system status indicators board in the direction shown by arrow 4.
4
Remove two screws 5 and one screw 6, then remove the USB board in the
direction shown by arrow 7.
5
5
6
7
Step Screw (quantity) Color Torque
5M2 × 3 mm, at-head, nylok-coated (2) Black 1.5 ± 0.2 kgfcm
6M2 × 5 mm, at-head, nylok-coated (1) Black 1.5 ± 0.2 kgfcm

53
Lenovo IdeaPad U300/U300s/U400
Figure 10. Removal steps of keyboard and keyboard bezel (continued)
Remove four screws 8, then remove two brackets in the direction shown by
arrows 9.
8
8
8
8
9
9
Step Screw (quantity) Color Torque
8M2 × 3 mm, at-head, nylok-coated (4) Black 1.5 ± 0.2 kgfcm

54
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
U300s
1010 Base cover (U300s)
Note: Turn off the computer rst. Otherwise, it may cause permanent damage
to the computer.
Figure 1. Removal steps of base cover
Open the rubbers and remove two screws 1, then remove the base cover in
the direction shown by arrow 2.
1
1
2
Step Screw (quantity) Color Torque
1M2 × 7 mm, at-head, nylok-coated (2) Black 1.5 ± 0.2 kgfcm

55
Lenovo IdeaPad U300/U300s/U400
Note: Applying labels to the base cover
The new base cover FRU is shipped with a kit containing labels of several
kinds. When you replace the base cover, you need to apply the following
label:
The following labels need to be peeled off from the old base cover, and need
to be put on the new base cover.
a COA Label
b Brazil label
c WLAN label for Malaysia
d WLAN label for Indonesia
e GWE for china
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 gure:
a
b
c
d
e

56
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1020 Battery pack (U300s)
For access, remove this FRU:
• “1010 Base cover (U300s)” on page 54
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
Detach the battery pack connector in the direction shown by arrow 1, remove
four screws 2, and then remove the battery pack 3.
1
2
2
2
2
3
Step Screw (quantity) Color Torque
2M2 × 3 mm, at-head, nylok-coated (4) White 1.5 ± 0.2 kgfcm
When installing: Make sure the battery pack connector is attached rmly.

57
Lenovo IdeaPad U300/U300s/U400
1030 Speakers (U300s)
For access, remove these FRUs in order:
• “1010 Base cover (U300s)” on page 54
• “1020 Battery pack (U300s)” on page 56
Figure 3. Removal steps of speakers
Detach two speakers connectors in the direction shown by arrow 1. Remove
four screws 2.
1
2
2
2
2
Step Screw (quantity) Color Torque
2M2 × 4.5 mm, at-head, nylok-coated (4) White 1.0 ± 0.2 kgfcm
Remove the speakers in the direction shown by arrows 3.
3
3
When installing: Make sure that the speaker connectors are attached rmly.

58
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1040 Solid State Disk (U300s)
For access, remove these FRUs in order:
• “1010 Base cover (U300s)” on page 54
• “1020 Battery pack (U300s)” on page 56
• “1030 Speakers (U300s)” on page 57
Attention:
• Donotdropthesolidstatediskorapplyanyphysicalshocktoit. The hard
disk drive is sensitive to physical shock. Improper handling can cause damages
and permanent loss of data.
• Before removing the drive, suggest the customer to backup all the information on
it if possible.
• Never remove the drive while the system is operating or is in suspend mode.
Figure 4. Removal steps of solid state disk
Unplug two connectors in the direction shown by arrow 1, remove two screws
2, and then remove the solid state disk in the direction shown by arrow 3.
2
2
1
3
Step Screw (quantity) Color Torque
2M2 × 3 mm, at-head, nylok-coated (2) Black 1.5 ± 0.2 kgfcm
When installing: Make sure that the SSD connector is attached rmly.

59
Lenovo IdeaPad U300/U300s/U400
1050 USB Board (U300s)
For access, remove these FRUs in order:
• “1010 Base cover (U300s)” on page 54
• “1020 Battery pack (U300s)” on page 56
• “1030 Speakers (U300s)” on page 57
Figure 5. Removal steps of USB board
Unplug three connectors in the direction by arrows 1 2, remove two screws 3,
then remove the USB board 4.
3
3
2
4
2
1
Step Screw (quantity) Color Torque
3M2 × 3 mm, at-head, nylok-coated (2) Black 1.5 ± 0.2 kgfcm

60
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1060 Keyboard and keyboard bezel (U300s)
For access, remove these FRUs in order:
• “1010 Base cover (U300s)” on page 54
• “1020 Battery pack (U300s)” on page 56
• “1030 Speakers (U300s)” on page 57
• “1040 Solid State Disk (U300s)” on page 58
• “1050 USB Board (U300s)” on page 59
Figure 6. Removal steps of keyboard and keyboard bezel
Lift the keyboard cover with ngers in the direction shown by arrows 1.
1
1

61
Lenovo IdeaPad U300/U300s/U400
Figure 6. Removal steps of keyboard and keyboard bezel (continued)
Detach the microphone connector and touch pad connector in the direction
shown by arrows 2 3 4, then remove six screws 5.
5
5
5
5
5
5
2
3
4
Step Screw (quantity) Color Torque
5M2 × 5 mm, at-head, nylok-coated (6) Black 1.5 ± 0.2 kgfcm
Lift the system board a little 6, detach two connectors in the direction shown by
arrows 3 4 7.
7
6
3
4
When installing: Make sure that the connectors are attached rmly.

62
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Figure 6. Removal steps of keyboard and keyboard bezel (continued)
Remove the keyboard and keyboard bezel 8.
8
Remove two screws 9 and then remove the power button board in the direction
shown by arrow J.
9
9
10
Step Screw (quantity) Color Torque
9M2 × 3 mm, at-head, nylok-coated (2) White 1.5 ± 0.2 kgfcm

63
Lenovo IdeaPad U300/U300s/U400
Figure 6. Removal steps of keyboard and keyboard bezel (continued)
Remove the Minnie microphone board and LED board in the direction shown by
arrows K.
11
11

64
Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1070 PCI Express Mini Card for wireless LAN (U300s)
For access, remove these FRUs in order:
• “1010 Base cover (U300s)” on page 54
• “1020 Battery pack (U300s)” on page 56
• “1030 Speakers (U300s)” on page 57
• “1040 Solid State Disk (U300s)” on page 58
• “1050 USB Board (U300s)” on page 59
• “1060 Keyboard and keyboard bezel (U300s)” on page 60
Figure 7. Removal steps of PCI Express Mini Card for wireless LAN
U300s
2
2
1
Disconnect the two wireless LAN cables (black, white) 1, and then remove the
screw 2.
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 arrows.
Notes: wireless LAN card has 2 cables in step 1.
wireless LAN card in some models may have 3 cables in step 1.
Step Screw (quantity) Color Torque
2M2 × 2.5 mm, at-head, nylok-coated (2) White 1.5 ± 0.3 kgfcm

65
Lenovo IdeaPad U300/U300s/U400
Figure 7. Removal steps of PCI Express Mini Card for wireless LAN (continued)
Remove the card in the direction shown by arrow 3.
U300s
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 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.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1080 LCD unit (U300s)
For access, remove these FRUs in order:
• “1010 Base cover (U300s)” on page 54
• “1020 Battery pack (U300s)” on page 56
• “1030 Speakers (U300s)” on page 57
• “1040 Solid State Disk (U300s)” on page 58
• “1050 USB Board (U300s)” on page 59
• “1060 Keyboard and keyboard bezel (U300s)” on page 60
• “1070 PCI Express Mini Card for wireless LAN (U300s)” on page 64
Figure 8. Removal steps of LCD unit
Unplug the LCD connector and the camera connector in the direction shown by
arrows 1 2. Remove four screws 3.
U300s
1
2
3
3
3
3
Step Screw (quantity) Color Torque
3M2.5 × 4 mm, at-head, nylok-coated (4) Black 2.5 ± 0.2 kgfcm
When installing:
Route the antenna cables along the cable guides. As you route the cables, •
make sure that they are not subjected to any tension. Tension could cause
the cables to be damaged by the cable guides, or a wire to be broken.
Make sure that the LCD connector is attached rmly and make sure that you •
do not pinch the antenna cables when you attach the LCD assembly. Route
the LCD cable along the cable guides.

67
Lenovo IdeaPad U300/U300s/U400
Figure 8. Removal steps of LCD unit (continued)
Remove the LCD unit in the direction shown by arrow 4.
U300s
4

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1090 DIMM (U300s)
For access, remove these FRUs in order:
• “1010 Base cover (U300s)” on page 54
• “1020 Battery pack (U300s)” on page 56
• “1030 Speakers (U300s)” on page 57
• “1040 Solid State Disk (U300s)” on page 58
• “1050 USB Board (U300s)” on page 59
• “1060 Keyboard and keyboard bezel (U300s)” on page 60
• “1070 PCI Express Mini Card for wireless LAN (U300s)” on page 64
• “1080 LCD unit (U300s)” on page 66
Figure 9. Removal steps of DIMM
Release the two latches on both edges of the socket at the same time in the
direction shown by arrows 1, and then unplug the DIMM in the direction shown
by arrow 2.
2
1
1
When installing: Insert the notched end of the DIMM into the socket. Push the
DIMM rmly, and pivot it until it snaps into the place. Make sure that it is rmly
xed in the slot and difcult to be moved.

69
Lenovo IdeaPad U300/U300s/U400
1100 Fan assembly and Heat Sink assembly (U300s)
For access, remove these FRUs in order:
• “1010 Base cover (U300s)” on page 54
• “1020 Battery pack (U300s)” on page 56
• “1030 Speakers (U300s)” on page 57
• “1040 Solid State Disk (U300s)” on page 58
• “1050 USB Board (U300s)” on page 59
• “1060 Keyboard and keyboard bezel (U300s)” on page 60
• “1070 PCI Express Mini Card for wireless LAN (U300s)” on page 64
• “1080 LCD unit (U300s)” on page 66
Figure 10. Removal steps of fan assembly and heat sink assembly
Detach two fan connectors in the direction shown by arrow 1 and remove four
screws 2 and four screws 3 on one side.Then remove two screws 4 on the
other side.
1
2
2
2
23
3

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Figure 10. Removal steps of fan assembly and heat sink assembly (continued)
4
4
When installing: Make sure that the fan connector is attached firmly to the
system board.
Step Screw (quantity) Color Torque
2M2 × 4 mm, at-head, nylok-coated (4) White 1.5 ± 0.2 kgfcm
3M2 × 3 mm, at-head, nylok-coated (4) White 1.5 ± 0.2 kgfcm
4M2 × 3 mm, at-head, nylok-coated (2) White 1.5 ± 0.2 kgfcm
Lift the fan assembly and heat sink assembly in the direction shown by arrows
5. Be careful not to damage the connector.
5
5
Attention: Do not handle the heat sink assembly roughly. Improper handling
can cause distortion or deformation and imperfect contact with components.

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Lenovo IdeaPad U300/U300s/U400
Figure 10. Removal steps of fan assembly and heat sink assembly (continued)
a
When installing:
Before you attach the fan assembly to the computer, apply thermal grease, •
at an amount of 0.2 grams, to the a part shown in the gure above. Either
too much or too less grease application can cause a thermal problem due to
imperfect contact with a component.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1110
System board
(U300s)
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 (U300s)” on page 54
• “1020 Battery pack (U300s)” on page 56
• “1030 Speakers (U300s)” on page 57
• “1040 Solid State Disk (U300s)” on page 58
• “1050 USB Board (U300s)” on page 59
• “1060 Keyboard and keyboard bezel (U300s)” on page 60
• “1070 PCI Express Mini Card for wireless LAN (U300s)” on page 64
• “1080 LCD unit (U300s)” on page 66
• “1090 DIMM (U300s)” on page 68
• “1100 Fan assembly and Heat Sink assembly (U300s)” on page 69

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Lenovo IdeaPad U300/U300s/U400
Figure 11. Removal steps of system board
Remove four screws 1, then remove the fan bracket from the system board in
the direction shown by arrows 2.
1
1
1
2
2
When installing: Make sure that the power connector is attached rmly.
Step Screw (quantity) Color Torque
1M2 × 3 mm, at-head, nylok-coated (4) Black 1.5 ± 0.2 kgfcm
Remove the IO board in the direction shown by arrow 3.
3

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
U400
1010 Base cover (U400)
Note: Turn off the computer rst. Otherwise, it may cause permanent damage
to the computer.
Figure 1. Removal steps of base cover
Open the rubbers and remove two screws 1, then remove the base cover in
the direction shown by arrow 2.
2
1
1
Step Screw (quantity) Color Torque
1M2 × 4 mm, at-head, nylok-coated (2) White 3.5 ± 0.24 kgfcm

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Lenovo IdeaPad U300/U300s/U400
Note: Applying labels to the base cover
The new base cover FRU is shipped with a kit containing labels of several
kinds. When you replace the base cover, you need to apply the following
label:
The following labels need to be peeled off from the old base cover, and need
to be put on the new base cover.
a COA label
b Brazil label (WLAN) or WLAN label for US/CA/TW or Israel label for WLAN
c Brazil label (BT) or BT label for US/CA/TW
d SIRIM label for Malaysia
e SIRIM label for Malaysia
f WLAN label for Indonesia
g BT label for Indonesia
h GWE for china
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 gure:
ab
c
e
f
g
h
d

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1020 Battery pack (U400)
For access, remove this FRU:
• “1010 Base cover (U400)” on page 74
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
Detach the battery pack connector in the direction shown by arrow 1, remove
ve screws 2 and one screw 3, and then remove the battery pack 4.
4
1
2
2
2
2
2
3
Step Screw (quantity) Color Torque
2M2 × 6 mm, at-head, nylok-coated (5) Black 1.6 ± 0.24 kgfcm
3M2 × 7 mm, at-head, nylok-coated (1) White 1.6 ± 0.24 kgfcm
When installing: Make sure the battery pack connector is attached rmly.

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Lenovo IdeaPad U300/U300s/U400
1030 Hard disk drive (U400)
For access, remove these FRUs in order:
• “1010 Base cover (U400)” on page 74
• “1020 Battery pack (U400)” on page 76
Attention:
• Donotdroptheharddiskdriveorapply anyphysical shockto it. The hard
disk drive is sensitive to physical shock. Improper handling can cause damages
and permanent loss of data.
• Before removing the drive, suggest the customer to backup all the information on
it if possible.
• Never remove the drive while the system is operating or is in suspend mode.
Figure 3. Removal steps of hard disk drive
Remove two screws 1, lift the HDD a little. Detach the HDD connector in the
direction shown by arrows 2, and then remove the hard disk drive from the slot
in the direction shown by arrow 3.
1
1
3
2
Step Screw (quantity) Color Torque
1M2 × 2.5 mm, at-head, nylok-coated (2) Black 1.6 ± 0.24 kgfcm
When installing: Make sure that the HDD connector is attached rmly.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1040 PCI Express Mini Card for wireless LAN (U400)
For access, remove these FRUs in order:
• “1010 Base cover (U400)” on page 74
• “1020 Battery pack (U400)” on page 76
Figure 4. Removal steps of PCI Express Mini Card for wireless LAN
1
1
1
1
2
Disconnect the two wireless LAN cables (black, white) 1, and then remove the
screw 2.
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 arrows.
Notes: wireless LAN card has 2 cables in step 1.
wireless LAN card in some models may have 3 cables in step 1.
Step Screw (quantity) Color Torque
2M2 × 2.5 mm, at-head, nylok-coated (1) Black 1.6 ± 0.24 kgfcm

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Lenovo IdeaPad U300/U300s/U400
Figure 4. 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 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.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1050
System board
(U400)
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 (U400)” on page 74
• “1020 Battery pack (U400)” on page 76
• “1030 Hard disk drive (U400)” on page 77
• “1040 PCI Express Mini Card for wireless LAN (U400)” on page 78

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Lenovo IdeaPad U300/U300s/U400
Figure 5. Removal steps of system board
Remove four screws 1 and three screws 2. Detach seven connectors in the
direction shown by arrows 3 4 5 6.
1
1
1
2
1
2
2
6
4
5
6
3
4
4
3
When installing: Make sure that the connectors are attached rmly.
Step Screw (quantity) Color Torque
1M2 × 6 mm, at-head, nylok-coated (4) Black 1.6 ± 0.24 kgfcm
2M2 × 2.5 mm, at-head, nylok-coated (3) Black 1.6 ± 0.24 kgfcm
Remove the system board in the direction shown by arrow 7.
7

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1060 USB board and HDD board (U400)
For access, remove these FRUs in order:
• “1010 Base cover (U400)” on page 74
• “1020 Battery pack (U400)” on page 76
• “1030 Hard disk drive (U400)” on page 77
• “1040 PCI Express Mini Card for wireless LAN (U400)” on page 78
• “1050 System board (U400)” on page 80
Figure 6. Removal steps of USB board and HDD board
Unplug three connectors in the direction shown by arrows 1 2, remove two
screws 3, remove HDD board in the direction by arrow 4.
3
3
1
2
4
Step Screw (quantity) Color Torque
3M2 × 2.5 mm, at-head, nylok-coated (2) Black 1.6 ± 0.24 kgfcm

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Lenovo IdeaPad U300/U300s/U400
Figure 6. Removal steps of USB board and HDD board (continued)
Remove one screw 5, lift the USB board a little, and then remove two screws
6 on the back of that board. Unplug the connector in the direction by arrow 7,
remove USB board 8.
5
66
7
8
Step Screw (quantity) Color Torque
5M2 × 6 mm, at-head, nylok-coated (1) Black 1.6 ± 0.24 kgfcm
6M2 × 2.5 mm, at-head, nylok-coated (2) Black 1.6 ± 0.24 kgfcm
When installing: Make sure the connectors are attached rmly.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1070 Speakers and microphone (U400)
For access, remove these FRUs in order:
• “1010 Base cover (U400)” on page 74
• “1020 Battery pack (U400)” on page 76
• “1030 Hard disk drive (U400)” on page 77
• “1040 PCI Express Mini Card for wireless LAN (U400)” on page 78
• “1050 System board (U400)” on page 80
• “1060 USB board and HDD board (U400)” on page 82
Figure 7. Removal steps of speakers and microphone
Remove two screws 1.
1
1
Step Screw (quantity) Color Torque
1M2 × 3.5 mm, at-head, nylok-coated (2) Black 1.6 ± 0.24 kgfcm
Remove the speakers in the direction shown by arrow 2.
2

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Lenovo IdeaPad U300/U300s/U400
Figure 7. Removal steps of speakers and microphone (continued)
Remove the microphone in the direction by arrow 3.
3
When installing: Make sure that the speakers connector and microphone
connector are attached rmly.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1080 Optical drive (U400)
For access, remove these FRUs in order:
• “1010 Base cover (U400)” on page 74
• “1020 Battery pack (U400)” on page 76
• “1030 Hard disk drive (U400)” on page 77
• “1040 PCI Express Mini Card for wireless LAN (U400)” on page 78
• “1050 System board (U400)” on page 80
• “1060 USB board and HDD board (U400)” on page 82
• “1070 Speakers and microphone (U400)” on page 84
Figure 8. Removal steps of optical drive
Remove two screws 1, then remove the optical drive in the direction by arrow 2.
1
1
2
Step Screw (quantity) Color Torque
1M2 × 2.5 mm, at-head, nylok-coated (2) Black 1.6 ± 0.24 kgfcm

87
Lenovo IdeaPad U300/U300s/U400
1090 LCD unit (U400)
For access, remove these FRUs in order:
• “1010 Base cover (U400)” on page 74
• “1020 Battery pack (U400)” on page 76
• “1030 Hard disk drive (U400)” on page 77
• “1040 PCI Express Mini Card for wireless LAN (U400)” on page 78
• “1050 System board (U400)” on page 80
• “1060 USB board and HDD board (U400)” on page 82
• “1070 Speakers and microphone (U400)” on page 84
• “1080 Optical drive (U400)” on page 86
Figure 9. Removal steps of LCD unit
Remove four screws 1.
1
1
11
Step Screw (quantity) Color Torque
1M2 × 6 mm, at-head, nylok-coated (4) Black 1.6 ± 0.24 kgfcm
When installing:
Route the antenna cables along the cable guides. As you route the cables, •
make sure that they are not subjected to any tension. Tension could cause
the cables to be damaged by the cable guides, or a wire to be broken.
Make sure that the LCD connector is attached rmly and make sure that you •
do not pinch the antenna cables when you attach the LCD assembly. Route
the LCD cable along the cable guides.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Figure 9. Removal steps of LCD unit (continued)
Remove the LCD unit in the direction shown by arrows 2.
2

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Lenovo IdeaPad U300/U300s/U400
1100 Keyboard and keyboard bezel (U400)
For access, remove these FRUs in order:
• “1010 Base cover (U400)” on page 74
• “1020 Battery pack (U400)” on page 76
• “1030 Hard disk drive (U400)” on page 77
• “1040 PCI Express Mini Card for wireless LAN (U400)” on page 78
• “1050 System board (U400)” on page 80
• “1060 USB board and HDD board (U400)” on page 82
• “1070 Speakers and microphone (U400)” on page 84
• “1080 Optical drive (U400)” on page 86
• “1090 LCD unit (U400)” on page 87
Figure 10. Removal steps of keyboard and keyboard bezel
Remove one screw 1, and then remove the power button 2.
1
2
Step Screw (quantity) Color Torque
1M2 × 3.5 mm, at-head, nylok-coated (1) Black 1.6 ± 0.24 kgfcm

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1110 Fan assembly and Heat Sink assembly (U400)
For access, remove these FRUs in order:
• “1010 Base cover (U400)” on page 74
• “1020 Battery pack (U400)” on page 76
• “1030 Hard disk drive (U400)” on page 77
• “1040 PCI Express Mini Card for wireless LAN (U400)” on page 78
• “1050 System board (U400)” on page 80
Figure 11. Removal steps of fan assembly and heat sink assembly
Detach the fan connector in the direction shown by arrow 1 and loosen four
screws 2.
1
2 2 2 2
When installing: Make sure that the fan connector is attached firmly to the
system board.

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Lenovo IdeaPad U300/U300s/U400
Figure 11. Removal steps of fan assembly and heat sink assembly (continued)
Lift the fan assembly and heat sink assembly in the direction shown by arrow 3.
Be careful not to damage the connector.
3
Attention: Do not handle the heat sink assembly roughly. Improper handling
can cause distortion or deformation and imperfect contact with components.
a
b
When installing:
Before you attach the fan assembly to the computer, apply thermal grease, •
at an amount of 0.2 grams, to the a b part shown in the gure above. Either
too much or too less grease application can cause a thermal problem due to
imperfect contact with a component.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1120 DIMM (U400)
For access, remove these FRUs in order:
• “1010 Base cover (U400)” on page 74
• “1020 Battery pack (U400)” on page 76
• “1030 Hard disk drive (U400)” on page 77
• “1040 PCI Express Mini Card for wireless LAN (U400)” on page 78
• “1050 System board (U400)” on page 80
Figure 12. Removal steps of DIMM
Release the two latches on both edges of the socket at the same time in the
direction shown by arrows 1, and then unplug the DIMM in the direction shown
by arrow 2.
1
2
1
When installing: Insert the notched end of the DIMM into the socket. Push the
DIMM rmly, and pivot it until it snaps into the place. Make sure that it is rmly
xed in the slot and difcult to be moved.

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Lenovo IdeaPad U300/U300s/U400
1130 LCD front bezel (U400)
For access, remove these FRUs in order:
• “1010 Base cover (U400)” on page 74
• “1020 Battery pack (U400)” on page 76
• “1030 Hard disk drive (U400)” on page 77
• “1040 PCI Express Mini Card for wireless LAN (U400)” on page 78
• “1050 System board (U400)” on page 80
• “1060 USB board and HDD board (U400)” on page 82
• “1070 Speakers and microphone (U400)” on page 84
• “1080 Optical drive (U400)” on page 86
• “1090 LCD unit (U400)” on page 87
Figure 13. Removal steps of LCD front bezel
Carefully remove the LCD front bezel in the direction shown by arrows 1 2.
1
2
2
2
2

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1140 LCD panel, hinges and LCD cable (U400)
For access, remove these FRUs in order:
• “1010 Base cover (U400)” on page 74
• “1020 Battery pack (U400)” on page 76
• “1030 Hard disk drive (U400)” on page 77
• “1040 PCI Express Mini Card for wireless LAN (U400)” on page 78
• “1050 System board (U400)” on page 80
• “1060 USB board and HDD board (U400)” on page 82
• “1070 Speakers and microphone (U400)” on page 84
• “1080 Optical drive (U400)” on page 86
• “1090 LCD unit (U400)” on page 87
• “1130 LCD front bezel (U400)” on page 93
Figure 14. Removal steps of LCD panel, hinges and LCD cable
Remove six screws 1. Release the two hinges in the direction shown by
arrows 2.
2
2
1
1
1
1
1
1
Step Screw (quantity) Color Torque
1M2 × 2.5 mm, at-head, nylok-coated (6) Black 1.6 ± 0.24 kgfcm

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Lenovo IdeaPad U300/U300s/U400
Figure 14. Removal steps of LCD panel, hinges and LCD cable (continued)
Remove four screws 3, detach the integrated camera connector in the
direction shown by arow 4. Remove the LCD panel in the direction shown by
arrow 5.
4
3
3
5
3
3
Step Screw (quantity) Color Torque
3M2 × 2.5 mm, at-head, nylok-coated (4) Black 1.6 ± 0.24 kgfcm
Note: The LCD cables are attached to the LCD panel by a metal connector.
Peel off the adhesive tape and detach the connector in the direction shown by
arrow 6.
6
When installing: Make sure that the metal connector is attached rmly.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1150 Integrated camera (U400)
For access, remove these FRUs in order:
• “1010 Base cover (U400)” on page 74
• “1020 Battery pack (U400)” on page 76
• “1030 Hard disk drive (U400)” on page 77
• “1040 PCI Express Mini Card for wireless LAN (U400)” on page 78
• “1050 System board (U400)” on page 80
• “1060 USB board and HDD board (U400)” on page 82
• “1070 Speakers and microphone (U400)” on page 84
• “1080 Optical drive (U400)” on page 86
• “1090 LCD unit (U400)” on page 87
• “1130 LCD front bezel (U400)” on page 93
• “1140 LCD panel, hinges and LCD cable (U400)” on page 94
Figure 15. Removal steps of integrated camera
Note: The integrated camera is stuck on the top center of the LCD cover.
Remove the integrated camera from the LCD cover 1.
1
When installing: Stick the integrated camera to the top center of the LCD
cover and ajust the placement of it to make sure the connector is attached
rmly.

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Lenovo IdeaPad U300/U300s/U400
1160 Antenna assembly and LCD cover (U400)
For access, remove these FRUs in order:
• “1010 Base cover (U400)” on page 74
• “1020 Battery pack (U400)” on page 76
• “1030 Hard disk drive (U400)” on page 77
• “1040 PCI Express Mini Card for wireless LAN (U400)” on page 78
• “1050 System board (U400)” on page 80
• “1060 USB board and HDD board (U400)” on page 82
• “1070 Speakers and microphone (U400)” on page 84
• “1080 Optical drive (U400)” on page 86
• “1090 LCD unit (U400)” on page 87
• “1130 LCD front bezel (U400)” on page 93
• “1140 LCD panel, hinges and LCD cable (U400)” on page 94
• “1150 Integrated camera (U400)” on page 96
Figure 16. Removal steps of antenna assembly and LCD cover
Remove the antenna assembly in the direction shown by arrows 1.
1
When installing: Route the antenna cables along the cable guides and secure
the antenna boards with adhesive tapes. As you route the cables, make sure
that they are not subjected to any tension. Tension could cause the cables to
be damaged by the cable guides, or a wire to be broken.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Locations
Note: The illustrations used in this section are of the Lenovo ideapad U400,
unless otherwise stated.
Front view
1 Integrated camera (Select models only)
2 Wireless module antennas (Select models only)
3 Power button
4 System status indicators
Note: For the description of each indicator, see “Status indicators” on page 29.
5 Touchpad
U400
1
2
4
3
4
5

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Lenovo IdeaPad U300/U300s/U400
Right-side view
1 USB port
2 HDMI port
3 RJ-45 port
4 Headphone mic combo jack
5 AC power adapter jack
6 Optical drive
7 Built-in microphone
U300
2
1
1
7
5
3
U300s
1
4
7
5
2
U400
5
6
2
1
1
4

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Bottom and Left-side view
1 OneKey Rescue system button
2 USB port
3 Headphone mic combo jack
4 Fan louvers
5 RJ-45 port
6 Base cover
7 Built-in microphone
U300
1
6
4
2
3
U300s
6
1
4
2
U400
1
4
5
2
7
6

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Lenovo IdeaPad U300/U300s/U400
Parts list
This section presents the following service parts:
• “Overall” on page 102
• “LCD FRUs” on page 111
• “Keyboard” on page 113
• “Miscellaneous parts” on page 116
• “AC adapters” on page 118
• “Power cords” on page 119
Notes:
• Each FRU is available for all types or models, unless specic types or models
are specied.

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Overall
U300
U300
2
b
3
d
6
5
f
8
11
13
15
16
14
12
9
10
h
7
g
e
4
a
c
1

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Lenovo IdeaPad U300/U300s/U400
Table 5. Parts list—Overall
No. FRU FRU no.
a-h See “Miscellaneous parts” on page 116.
1Panel 13.3" CMI TBD
2 Keyboard (see “Keyboard” on page 113.)
3 MICKEY Micphone Board 11014115
4MICKEY Power Board 31052169
5 MICKEY LED Board 31052170
6 MICKEY DC-IN Jack W/Cable 31052176
7 MICKEY USB Board 11014114
8MICKEY Speaker(L+R)W/Cable 31052179
9 MICKEY MB I7-2620 2.7G W/HDMI 11014107
9MICKEY MB I3-2330 2.2G W/HDMI 11014108
9MICKEY MB I5-2540 2.6G W/HDMI 11014109
9MICKEY MB I5-2520 2.5G W/HDMI 11014110
9MICKEY MB I5-2430 2.4G W/HDMI 11014111
9MICKEY MB I3-2350 2.3G W/HDMI 11014112
10 MICKEY Fan 31052181
11 MICKEY Thermal 31052180
12 DDRIII 1333 1GB, SAM M471B2873GB0-CH9 DDR3 1333
1GB
11013084
12 DDRIII 1333 1GB, HMT312S6BFR6C-H9 N0 (Rev
Vega/2Gb/44nm)
11012321
12 DDRIII 1333 2GB, SAM M471B5773DH0-CH9 DDR3 1333
2GB
11012808
12 DDRIII 1333 2GB, HYN HMT325S6BFR8C-H9 N0 DDR3 1333
2GB
11012197
12 DDRIII 1333 2GB, RMT3010EC58E8F-1333(C/2Gb/40nm) 11200060
12 DDRIII 1333 2GB, RMT3010KC58E8F-1333(Samsung
C/2Gb/46nm)
11013171
12 DDRIII 1333 2GB, SP321NH08HAF (C/2Gb/45nm) 11200058
12 DDRIII 1333 2GB, NAN NT2GC64B88B0NS-CG DDR3 1333
2GB
11012761
12 DDRIII 1333 4GB, SAM M471B5273DH0-CH9 DDR3 1333 4GB 11012807
12 DDRIII 1333 4GB, RMT3020EC58E9F-1333(C/2Gb/40nm) 11200061
12 DDRIII 1333 4GB, EBJ41UF8BCS0-DJ-F(Rev C/2Gb/40nm) 11012945
12 DDRIII 1333 4GB, HYN HMT351S6BFR8C-H9 N0 DDR3
1333 4GB
11012199
12 On Board DDRIII 1333 2GB, EDJ2116DEBG-DJ-F(40nm) TBD
12 On Board DDRIII 1333 2GB, MP41J128M16HA-15E:D TBD
12 On Board DDRIII 1333 2GB, K4B2G1646C-HCH9/K0 TBD
12 On Board DDRIII 1333 2GB, H5TQ2G63BFR(Vega/44nm) TBD
12 On Board DDRIII 1333 4GB, EDJ4216BASE-DJ-F(40nm)
(CS:Now)
TBD
12 On Board DDRIII 1333 4GB, TBD(CS:Q2,11) TBD
12 On Board DDRIII 1333 4GB,
H5TQ4G63MFR(Gemma/38nm)(CS:Q2,11/MP:Q3,11)
TBD

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Table 5. Parts list—Overall (continued)
No. FRU FRU no.
13 WiFi 1x1 BGN, Intel 1000N MOW M PCIE NB HMC 20002329
13 WiFi 2x2 BGN+BT, Cbt BCM43225HMB BGN+BT HMC 20002511
13 WiFi 2x2 BGN+BT, Liteon WB197 BGN+BT HMC 20002520
14 59WH 2S2P 8060mAh,Polymer, U3 SMP/ATL L10M4P11
2S2P 59Wh bty
121500001
15 WD5000BPVT-24HXZT1 5400RPM 500G HDD 16004846
15 Seagate ST9500325AS 500G 9NB HDD 16004189
15 HT HTS547550A9E384 5400RPM 500G HDD 16200006
15 Toshiba MK5065GSX 5400RPM 500G HDD 16004643
15 Toshiba MK6475GSX 5400RPM 640G HDD 16005335
15 WD6400BPVT-24HXZT1 5400RPM 640G HDD 16004847
15 HT HTS547564A9E384 5400RPM 640G HDD 16200007
15 Seagate ST9640423AS 5400RPM 640G HDD 16200009
15 WD WD7500BPVT-24HXZT1 5400RPM 750G HDD 16004848
15 Toshiba MK7575GSX 5400RPM 750G HDD 16005334
15 HT HTS547575A9E384 5400RPM 750G HDD 16200008
15 Seagate ST9750423AS 5400RPM 750G HDD 16005333
15 Seagate ST9500423AS 7200RPM 500G HDD 16200020
15 Hitachi HTS725050A9A364 7200RPM500G HDD 16004531
15 WD WD5000BPKT 7200RPM 500G HDD 16200004
15 Seagate ST9750420AS 7200RPM 750G HDD 16005332
15 WD WD7500BPKT 7200RPM 750G HDD 16200005
16 MICKEY Lower Case 31052171
— AC adapter (see “AC adapters” on page 118).

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Lenovo IdeaPad U300/U300s/U400
U300s
U300s
5
7
8
14
13
12
17
i
18
16
15
a
11
9
10
6
4
2
3
b
c
e
f
g
h
d
1

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Table 6. Parts list—Overall
No. FRU FRU no.
a-i See “Miscellaneous parts” on page 116.
1Panel, 13.3", N133BGE-M41 HD G LED1 NB panel TBD
2 MINNIE Upper Case Gray W/KB-AR 31052458
2 MINNIE Upper Case Gray W/KB-BE 31052459
2MINNIE Upper Case Gray W/KB-BG 31052456
2 MINNIE Upper Case Gray W/KB-BR 31052451
2 MINNIE Upper Case Gray W/KB-CB 31052452
2 MINNIE Upper Case Gray W/KB-CZ 31052439
2 MINNIE Upper Case Gray W/KB-DU 31052448
2MINNIE Upper Case Gray W/KB-FR 31052464
2MINNIE Upper Case Gray W/KB-GE 31052453
2MINNIE Upper Case Gray W/KB-GR 31052438
2MINNIE Upper Case Gray W/KB-HE 31052454
2MINNIE Upper Case Gray W/KB-HU 31052457
2MINNIE Upper Case Gray W/KB-IN 31052455
2 MINNIE Upper Case Gray W/KB-IS 31052445
2 MINNIE Upper Case Gray W/KB-IT 31052441
2MINNIE Upper Case Gray W/KB-JP 31052436
2MINNIE Upper Case Gray W/KB-KO 31052442
2MINNIE Upper Case Gray W/KB-LA 31052440
2MINNIE Upper Case Gray W/KB-ND 31052461
2MINNIE Upper Case Gray W/KB-PO 31052437
2MINNIE Upper Case Gray W/KB-RU 31052463
2MINNIE Upper Case Gray W/KB-SF 31052446
2MINNIE Upper Case Gray W/KB-SK 31052444
2MINNIE Upper Case Gray W/KB-SP 31052443
2MINNIE Upper Case Gray W/KB-TA 31052450
2MINNIE Upper Case Gray W/KB-TU 31052462
2MINNIE Upper Case Gray W/KB-TW 31052447
2 MINNIE Upper Case Gray W/KB-UI 31052460
2MINNIE Upper Case Gray W/KB-UK 31052435
2MINNIE Upper Case Gray W/KB-US 31052434
2MINNIE Upper Case Black W/KB-US 25013757
2MINNIE Upper Case Black W/KB-UK 90200001
2 MINNIE Upper Case Black W/KB-JP 90200002
2 MINNIE Upper Case Black W/KB-CB 25013758
2 MINNIE Upper Case Black W/KB-AR 90200004
2MINNIE Upper Case Black W/KB-RU 90200003
3MINNIE Touchpad Module Black 31052656
3MINNIE Touchpad Module Light-Gray 31052465
4MINNIE Power Board 31052186
5WiFi 1x1 BGN, Intel 1000N MOW M PCIE NB HMC 20002329
5WiFi 2x2 BGN+BT, Cbt BCM43225HMB BGN+BT HMC 20002511
5WiFi 2x2 BGN+BT, Liteon WB197 BGN+BT HMC 20002520

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Lenovo IdeaPad U300/U300s/U400
Table 6. Parts list—Overall (continued)
No. FRU FRU no.
6 MINNIE LED Board 31052187
7 MINNIE Micphone Board 11014124
8 MINNIE Thermal 31052201
9 MINNIE CPU Fan 31052203
9MINNIE System Fan 31052204
10 DDRIII 1333 2GB, SAM M471B5773DH0-CH9 DDR3 1333
2GB
11012808
10 DDRIII 1333 2GB, HYN HMT325S6BFR8C-H9 N0 DDR3
1333 2GB
11012197
10 DDRIII 1333 2GB, RMT3010EC58E8F-1333(C/2Gb/40nm) 11200060
10 DDRIII 1333 2GB, RMT3010KC58E8F-1333(Samsung
C/2Gb/46nm)
11013171
10 DDRIII 1333 2GB, SP321NH08HAF (C/2Gb/45nm) 11200058
10 DDRIII 1333 2GB, NAN NT2GC64B88B0NS-CG DDR3
1333 2GB
11012761
10 DDRIII 1333 4GB, SAM M471B5273DH0-CH9 DDR3 1333
4GB
11012807
10 DDRIII 1333 4GB, RMT3020EC58E9F-1333(C/2Gb/40nm) 11200061
10 DDRIII 1333 4GB, EBJ41UF8BCS0-DJ-F(Rev C/2Gb/40nm) 11012945
10 DDRIII 1333 4GB, HYN HMT351S6BFR8C-H9 N0 DDR3
1333 4GB
11012199
11 MINNIE MB I7-2637 1.7G W/HDMI 11014116
11 MINNIE MB I3-2357 1.3G W/HDMI 11014118
11 MINNIE MB I5-2467 1.6G W/HDMI 11014119
11 MINNIE MB I7-2677 1.8G W/HDMI 11014120
11 MINNIE MB I5-2557 1.7G W/HDMI 11014206
12 MINNIE DC-IN Jack W/Cable 31052193
13 MINNIE IO Board 11014123
13 MINNIE IO Board Black 31052653
14 Nandash, 128Gbit MLC, Micron,
MT29F128G08CMAAAC5:A
TBD
14 Nandash, 128Gbit MLC, Hynix, H27QDG8JEA TBD
14 Nandash, 256Gbit MLC, Micron,
MT29F256G08CMAAAC5:A
TBD
14 Nandash, 256Gbit MLC, Hynix, H27UEG8YEA TBD
15 MINNIE Speaker W/Cable Light 31052200
15 MINNIE Speaker W/Cable Right 31052199
16 MINNIE USB Board 11014122
16 MINNIE USB Board Black 11014238
17 57WH 4S1P 3890mAh Polymer, U3s SMP/ATL L10M4P12
4S1P 57Wh bty
121500002
18 MINNIE Lower Case 31052188
18 MINNIE Lower Case Black 31052655
— AC adapter (see “AC adapters” on page 118).

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
U400
2
5
cb
e f
a
g
k
d
l
7
8
11
16
12
15
13
14
10
9
m
6
4
3
1
U400
i
j
n
h

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Lenovo IdeaPad U300/U300s/U400
Table 7. Parts list—Overall
No. FRU FRU no.
a-l See “Miscellaneous parts” on page 116.
1 LCD unit (see “LCD FRUs” on page 111.)
2 Keyboard (see “Keyboard” on page 113.)
3 LU47 Upper Case W/EN KB/DC/POW Cable 31052386
3LU47 Upper Case W/UK KB/DC/POW Cable 31052387
3LU47 Upper Case W/LA KB/DC/POW Cable 31052388
4 LU47 TouchPad Module 31052161
5 ODD, HLDS GS30N Slot in Rambo 25013479
5 ODD, PSN UJ8A7 Slot in Rambo 25013477
6 LU47 Micphone 31052053
7LU47 Speaker(Left+Right) 31052059
8LU47 IO Board 11014050
8 LU47 10L IO Board 90200006
9Samsung MZMPA032HMCD 32G mSATA SSD 16005083
9Ramaxel RMS22MMMT032G mSATA 32G SSD 16200054
10 LU47 HDD Board 11014049
10 LU47 10L HDD Board 90200005
11 DDRIII 1333 2GB, SAM M471B5773DH0-CH9 DDR3 1333 2GB 11012808
11 DDRIII 1333 2GB, HYN HMT325S6BFR8C-H9 N0 DDR3 1333
2GB
11012197
11 DDRIII 1333 2GB, RMT3010EC58E8F-1333(C/2Gb/40nm) 11200060
11 DDRIII 1333 2GB, RMT3010KD58E8F-1333(Rev D
/2Gb/35nm)
TBD
11 DDRIII 1333 2GB, SP321NH08HAF (C/2Gb/45nm) 11200058
11 DDRIII 1333 2GB, NAN NT2GC64B88B0NS-CG DDR3 1333
2GB
11012761
11 DDRIII 1333 4GB, SAM M471B5273DH0-CH9 DDR3 1333
4GB
11012807
11 DDRIII 1333 4GB, RMT3020EC58E9F-1333(C/2Gb/40nm) 11200061
11 DDRIII 1333 4GB, EBJ41UF8BCS0-DJ-F(Rev C/2Gb/40nm) 11012945
11 DDRIII 1333 4GB, HYN HMT351S6BFR8C-H9 N0 DDR3 1333
4GB
11012199
12 LU47 MB DIS i3-2330 2.2G W/APS/HDMI/THM 11014051
12 LU47 MB DIS i5-2430 2.4G W/APS/HDMI/THM 11014052
12 LU47 MB DIS i7-2620 2.7G W/APS/HDMI/THM 11014053
12 LU47 MB 10L i3-2330 2.2G W/APS/HDMI/THM 90000004
12 LU47 MB 10L i5-2430 2.4G W/APS/HDMI/THM 90000005
12 LU47 MB 10L i7-2620 2.7G W/APS/HDMI/THM 90000006
13 WiFi 1x2 bgn + BT3.0, Intel 1030 BGN+BT M PCIE HMC 20200030
13 WiFi 2x2 BGN+BT, Cbt BCM43225HMB BGN+BT HMC 20002511
13 WiFi 2x2 BGN+BT, Liteon WB197 BGN+BT HMC 20002520
14 WD WD5000BPVT-24HXZ 5400RPM 500G HDD 16004846
14 Seagate ST9500325AS 500G 9NB HDD 16004189
14 HT HTS547550A9E384 5400RPM 500G HDD 16200006
14 Toshiba MK5065GSX 5400RPM 500G HDD 16004643
14 HGST HTS545050A7E380 5400PRM7mm 500G HDD 16200067

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Table 7. Parts list—Overall (continued)
No. FRU FRU no.
14 WD WD7500BPVT-24HXZ 5400RPM 750G 16004848
14 Toshiba MK7575GSX 5400RPM 750G HDD 16005334
14 HT HTS547575A9E384 5400RPM 750G HDD 16200008
14 Seagate ST9750423AS 5400RPM 750G HDD 16005333
14 Seagate ST9500423AS 7200RPM 500G HDD 16200020
14 Hitachi HTS727550A9E364 7200RPM 500G HDD 16200058
14 WD WD5000BPKT 7200RPM 500G HDD 16200004
14 Seagate ST9750420AS 7200RPM 750G HDD 16005332
14 WD WD7500BPKT 7200RPM 750G HDD 16200005
14 Hitachi HTS727575A9E364 7200RPM 750G HDD 16200060
15 Battery, Polymer 54Wh,4960mAh, U4 Sony L10N6P11 3S2P
54Wh bty
121500003
15 Battery, Polymer 54Wh,3700mAh, U4 Celx/ATL L10C4P11
4S1P 54Wh bty
121500004
16 LU47 Lower Case Dark-Gray 31052031
— AC adapter (see “AC adapters” on page 118).

111
Lenovo IdeaPad U300/U300s/U400
LCD FRUs
In Lenovo IdeaPad U400, there are following types of LCDs.
“14.0-in. • HD TFT”
5
3
7
1
6
8
2
4

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
14.0-in. HD TFT
Table 8. Parts list—14.0-in. HD TFT
No. FRU FRU no.
1 LU47 LCD Bezel Rubber Dark-Gray 31052037
2 LU47 LCD Bezel W/Camera Hole Light-Gray 31052029
3Panel, 14.0", AUO, B140XW03 V0 18003943
3Panel, 14.0", CMI, N140BGE-L41 18004804
3Panel, 14.0", LGD, LP140WH2-TLQ1 18003937
3Panel, 14.0", SEC, LTN140AT20-L01 18004803
4 LU47 LCD Cable W/Camera Cable 31052048
5 LU47 Hinge Left 31052050
5 LU47 Hinge Right 31052051
6 LU47 Camera 1.3M 31052049
7LU47 Antenna*2 Main+AUX 31052052
8 LU47 LCD Cover Dark-Gray 31052030

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Lenovo IdeaPad U300/U300s/U400
Keyboard
Table 9. Parts list—Keyboard
P/N
Sunrex (U300/
U300s)
JMET3SCZSK85keyBLKKeyKBD 25200278
JMET3SBulgarian85keyBLKKeyKBD 25200277
JMET3SUI84keyBLKKeyKBD 25200276
JMET3SSwiss85keyBLKKeyKBD 25200275
JMET3SSLN85keyBLKKeyKBD 25200274
JMET3SIceland85keyBLKKeyKBD 25200273
JMET3SBelgian85keyBLKKeyKBD 25200272
JMET3SNordic85keyBLKKeyKBD 25200271
JMET3SHungarian85keyBLKKeyKBD 25200270
JMET3SHebrewB84keyBLKKeyKBD 25200269
JMET3SGreek84keyBLKKeyKBD 25200268
JMET3SDutch85keyBLKKeyKBD 25200267
JMET3SJapan88keyBLKKeyKBD 25200266
JMET3SBrazil85keyBLKKeyKBD 25200265
JMET3SArabic84keyBLKKeyKBD 25200264
JMET3SGerman85keyBLKKeyKBD 25200263
JMET3SFrench85keyBLKKeyKBD 25200262
JMET3SRussian84keyBLKKeyKBD 25200261
JMET3STC84keyBLKKeyKBD 25200260
JMET3SKorean84keyBLKKeyKBD 25200259
JMET3SENCanada85keyBLKKeyKBD 25200258
JMET3SLatinSPA85keyBLKKeyKBD 25200257
JMET3SPortuguese85keyBLKKeyKBD 25200256
JMET3SThai84keyBLKKeyKBD 25200255
JMET3STurkish85keyBLKKeyKBD 25200254
JMET3SSpanish85keyBLKKeyKBD 25200253
JMET3SItalian85keyBLKKeyKBD 25200252
JMET3SUK85keyBLKKeyKBD 25200251
JMET3SUS84keyBLKKeyKBD 25200250
Darfon (U300/
U300s)
DFT3SCZSK85keyBLKKeyKBD 25200307
DFT3SBulgarian85keyBLKKeyKBD 25200306
DFT3SUI84keyBLKKeyKBD 25200305
DFT3SSwiss85keyBLKKeyKBD 25200304
DFT3SSLN85keyBLKKeyKBD 25200303
DFT3SIceland85keyBLKKeyKBD 25200302
DFT3SBelgian85keyBLKKeyKBD 25200301
DFT3SNordic85keyBLKKeyKBD 25200300
DFT3SHungarian85keyBLKKeyKBD 25200299
DFT3SHebrewB84keyBLKKeyKBD 25200298
DFT3SGreek84keyBLKKeyKBD 25200297
DFT3SDutch85keyBLKKeyKBD 25200296
DFT3SJapan88keyBLKKeyKBD 25200295
DFT3SBrazil85keyBLKKeyKBD 25200294
DFT3SArabic84keyBLKKeyKBD 25200293

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Table 9. Parts list—Keyboard (continued)
P/N
Darfon (U300/
U300s)
DFT3SGerman85keyBLKKeyKBD 25200292
DFT3SFrench85keyBLKKeyKBD 25200291
DFT3SRussian84keyBLKKeyKBD 25200290
DFT3STC84keyBLKKeyKBD 25200289
DFT3SKorean84keyBLKKeyKBD 25200288
DFT3SENCanada85keyBLKKeyKBD 25200287
DFT3SLatinSPA85keyBLKKeyKBD 25200286
DFT3SPortuguese85keyBLKKeyKBD 25200285
DFT3SThai84keyBLKKeyKBD 25200284
DFT3STurkish85keyBLKKeyKBD 25200283
DFT3SSpanish85keyBLKKeyKBD 25200282
DFT3SItalian85keyBLKKeyKBD 25200281
DFT3SUK85keyBLKKeyKBD 25200280
DFT3SUS84keyBLKKeyKBD 25200279
Sunrex (U400)
JMET3S7CZSK85keyBLKKeyKBD 25200220
JMET3S7TC84keyBLKKeyKBD 25200202
JMET3S7Russian84keyBLKKeyKBD 25200203
JMET3S7French85keyBLKKeyKBD 25200204
JMET3S7German85keyBLKKeyKBD 25200205
JMET3S7Arabic84keyBLKKeyKBD 25200206
JMET3S7Brazil85keyBLKKeyKBD 25200207
JMET3S7Japan88keyBLKKeyKBD 25200208
JMET3S7Dutch85keyBLKKeyKBD 25200209
JMET3S7Bulgarian85keyBLKKeyKBD 25200219
JMET3S7UI84keyBLKKeyKBD 25200218
JMET3S7Swiss85keyBLKKeyKBD 25200217
JMET3S7SLN85keyBLKKeyKBD 25200216
JMET3S7Iceland85keyBLKKeyKBD 25200215
JMET3S7Belgian85keyBLKKeyKBD 25200214
JMET3S7Nordic85keyBLKKeyKBD 25200213
JMET3S7Hungarian85keyBLKKeyKBD 25200212
JMET3S7HebrewB84keyBLKKeyKBD 25200211
JMET3S7Greek84keyBLKKeyKBD 25200210
JMET3S7ENCanada85keyBLKKeyKBD 25200200
JMET3S7Korean84keyBLKKeyKBD 25200201
JMET3S7LatinSPA85keyBLKKeyKBD 25200199
JMET3S7Portuguese85keyBLKKeyKBD 25200198
JMET3S7Thai84keyBLKKeyKBD 25200197
JMET3S7Turkish85keyBLKKeyKBD 25200196
JMET3S7Spanish85keyBLKKeyKBD 25200195
JMET3S7Italian85keyBLKKeyKBD 25200194
JMET3S7UK85keyBLKKeyKBD 25200193
JMET3S7US84keyBLKKeyKBD 25200192
Darfon (U400)
DFT3S7CZSK85keyBLKKeyKBD 25200249
DFT3S7Bulgarian85keyBLKKeyKBD 25200248
DFT3S7UI84keyBLKKeyKBD 25200247
DFT3S7Swiss85keyBLKKeyKBD 25200246

115
Lenovo IdeaPad U300/U300s/U400
Table 9. Parts list—Keyboard (continued)
P/N
Darfon (U400)
DFT3S7SLN85keyBLKKeyKBD 25200245
DFT3S7Iceland85keyBLKKeyKBD 25200244
DFT3S7Belgian85keyBLKKeyKBD 25200243
DFT3S7Nordic85keyBLKKeyKBD 25200242
DFT3S7Hungarian85keyBLKKeyKBD 25200241
DFT3S7HebrewB84keyBLKKeyKBD 25200240
DFT3S7Greek84keyBLKKeyKBD 25200239
DFT3S7Dutch85keyBLKKeyKBD 25200238
DFT3S7Japan88keyBLKKeyKBD 25200237
DFT3S7Brazil85keyBLKKeyKBD 25200236
DFT3S7Arabic84keyBLKKeyKBD 25200235
DFT3S7German85keyBLKKeyKBD 25200234
DFT3S7French85keyBLKKeyKBD 25200233
DFT3S7Russian84keyBLKKeyKBD 25200232
DFT3S7TC84keyBLKKeyKBD 25200231
DFT3S7Korean84keyBLKKeyKBD 25200230
DFT3S7ENCanada85keyBLKKeyKBD 25200229
DFT3S7LatinSPA85keyBLKKeyKBD 25200228
DFT3S7Portuguese85keyBLKKeyKBD 25200227
DFT3S7Thai84keyBLKKeyKBD 25200226
DFT3S7Turkish85keyBLKKeyKBD 25200225
DFT3S7Spanish85keyBLKKeyKBD 25200224
DFT3S7Italian85keyBLKKeyKBD 25200223
DFT3S7UK85keyBLKKeyKBD 25200222
DFT3S7US84keyBLKKeyKBD 25200221

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Miscellaneous parts
U300
Table 10. Parts list—Miscellaneous parts
FRU P/N
System miscellaneous parts:
• (
a
) MICKEY Frame left
• (
b
) MICKEY Frame Right
31052182
31052183
Cable miscellaneous parts:
• (
c
) MICKEY TouchPad Cable
• (
d
) MICKEY Minphone Board Cable
• (
e
) MICKEY Power Board Cable
• (
f
) MICKEY LED Board Cable
• (
g
) MICKEY USB Board Cable
• (
h
) MICKEY HDD Board W/Cable-SATA
Note: Italicized letters in parentheses are references to the
exploded view in “Overall” on page 102 .
31052174
31052177
31052172
31052173
31052175
31052178
U300s
Table 11. Parts list—Miscellaneous parts
FRU P/N
System miscellaneous parts:
• (
a
) MINNIE Frame
• (
a
) MINNIE Frame Black
31052205
31052654
Cable miscellaneous parts:
• (
b
) MINNIE TouchPad Cable
• (
c
) MINNIE LED Board Cable
• (
d
) MINNIE Minphone Board Cable
• (
e
) MINNIE Power Board Cable
• (
f
) MINNIE USB Board Cable
• (
g
) MINNIE SSD Cable
• (
h
) MINNIE IO Board Cable
• (
i
) MINNIE Battery Cable
Note: Italicized letters in parentheses are references to the
exploded view in “Overall” on page 102 .
31052191
31052190
31052195
31052189
31052192
31052196
31052194
31052197

117
Lenovo IdeaPad U300/U300s/U400
U400
Table 12. Parts list—Miscellaneous parts
FRU P/N
System miscellaneous parts:
• (
a
) LU47 TouchPad Bracket
• (
b
) LU47 ODD Bracket Right
• (
c
) LU47 ODD Bracket Back
• (
d
) LU47 ODD Bezel Slot-In Light-Gray
• (
e
) LU47 ODD Bracket Left
• (
f
) LU47 ODD Rubber
• (
g
) LU47 Micphone Rubber
• (
h
) LU47 Audio Breaket
• (
i
) LU47 HDD Bracket Large
• (
j
) LU47 HDD Bracket Small
31052162
31052034
31052032
31052035
31052033
31052056
31052057
31052055
31052028
31052027
Cable miscellaneous parts:
• (
k
) LU47 TouchPad Cable
• (
l
) LU47 IO Board Cable1 40PIN
• (
m
) LU47 IO Board Cable2 7PIN
• (
n
) LU47 HDD Board Cable
Note: Italicized letters in parentheses are references to the
exploded view in “Overall” on page 102 .
31052022
31052025
31052024
31052026

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
AC adapters
Table 13. Parts list—AC adapters
FRU P/N
65W, Delta ADP-65KH BD 20V/3.25A Adapter 36001929
65W, Liteon PA-1650-56LC20V3.25A Adapter 36001651
65W, Brazil PA-1650-52LB Adapter 36001714
65W, Chicony CPA-A065 20V3.25A Adapter(330PF) 36001943
Slim 65W, Delta 20V3.25A (slim)(U300/U300s) TBD
Slim 65W, LITEON 20V3.25A (slim)(U300/U300s) TBD
Slim 65W 3pin, Delta 3pin ADP-65XB B 20V/3.25A Adapter (U400) 36200043
Slim 65W 2pin, Delta ADP-65XB A 20V/3.25A Adapter (U400) 36200019
Slim 65W 2pin, Liteon 2pinPA-1650-37LC20V3.25A Adapter (U400) 36200044

119
Lenovo IdeaPad U300/U300s/U400
Power cords
A Lenovo IdeaPad power cord for a specific country or region is usually
available only in that country or region:
U300/U300s
Table 14. Parts list—3-pin power cords
Region P/N
CCC 3PIN
• SSD YD-118-1+IEC53RVV+SSD-3-2B-1 1m
145000602
CCC 3PIN
• LINETEK PC323+RVV300/300+LS15 1m
145000600
Argentina 3PIN
• LINETEK LS15+H03VV-F+LP39 1m
145000599
Danmark 3PIN
• LINETEK LS15+H03VV-F+LP-38 1m
145000598
Switzerland 3PIN
• LINETEK LS15+H03VV-F+LP-37 1m
145000597
Brazil 3PIN
• LINETEK LS15 H03VV-F LP26A 1m
145000596
Israel 3PIN
• LINETEK LS15+H03VV-F+LP-41 1m
145000595
UL 3PIN
• LINETEK LP-30B + SPT-2 + LS15 1m
145000594
UK 3PIN
• LINETEK LP-61L+ H03VV-F+ LS15 1m
145000593
Indian 3PIN
• LINETEK PE-361+ H05VV-F+ LS15 1m
145000592
Italy 3PIN
• LINETEK LS15+H03VV-F+PE-336 1m
145000591
Korea 3PIN
• LINETEK LS15+H05VV-F+LP-E04A 1m
145000590
Australia 3PIN
• LINETEK LS15+H03VV-F+LP-23A 1m
145000589
Taiwan3PIN
• LINETEK LS15+VCTF+LP-53 1m
145000588
Japan 3PIN
• LINETEK LS15+VCTF+LP-54 1m
145000587
Africa 3PIN
• LINETEK LS15+H03VV-F+PE-364 1m
145000586
CE 3PIN
• LINETEK LP-34+H03VV-F+LS15 1m
145000585
CCC 3PIN
• VOLEX GB10S3+RVV 300/500+VAC5S 1m
145000538
UL 3PIN
• Volex US15S3+SPT-2+VAC5S 1m
145000537
UK 3PIN
• VOLEX MP5004+H03VV-F+VAC5S 1m
145000605

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Table 14. Parts list—3-pin power cords (continued)
Region P/N
Indian 3PIN
• VOLEX IA6A3+IS694+VAC5S 1m
145000536
Switzerland 3PIN
• VOLEX MP232+H03VV-F+VAC5S 1m
145000524
Italy 3PIN
• VOLEX IT10S3+HO3VV-F+VAC5S 1m
145000535
Denmark 3PIN
• VOLEX MP233D+H03VV-F+VAC5S 1m
145000534
Korea 3PIN
• VOLEX M2511+KETI IEC+VAC5S 1m
145000533
Australia 3PIN
• VOLEX AU10S3+H03VV-F+VAC5S 1m
145000532
Taiwan3PIN
• VOLEX TW15CS3+VCTF+VAC5S 1m
145000531
Japan 3PIN
• VOLEX VAC5S+VCTF+M755 1m
145000530
Argentina 3PIN
• VOLEX VA2073+H03VV-F+VAC5S 1m
145000528
Brazil 3PIN
• VOLEX CH10S3+H03VV-F+VAC5S 1m
145000527
Israel 3PIN
• VOLEX SI16S3+H03VV-F+VAC5S 1m
145000526
CE 3PIN
• VOLEX M2511+HO3VV-F+VAC5S 1m
145000525
CCC 3PIN
• Longwell LSG-31+RVV300/300+LS-18 1m
145000568
Argentina 3PIN
• Longwell LP-24+H03VV-F+LS-18 1m
145000567
Danmark 3PIN
• Longwell LP-40+H03VV-F+LS-18 1m
145000566
Switzerland 3PIN
• Longwell LP-37+H03VV-F+LS-18 1m
145000565
Brazil 3PIN
• Longwell LP-46+H03VV-F+LS-18 1m
145000564
Israel 3PIN
• Longwell LP-41+H03VV-F+LS-18 1m
145000563
UL 3PIN
• Longwell LP-30B+SPT-2 18AWG+LS-18 1m
145000562
UK 3PIN
• Longwell LP-61L+H03VV-F+LS-18 1m
145000561
Indian 3PIN
• Longwell LP-67+BIS+LS-18 1m
145000560
Italy 3PIN
• Longwell LP-22+H03VV-F+LS-18 1m
145000559

121
Lenovo IdeaPad U300/U300s/U400
Table 14. Parts list—3-pin power cords (continued)
Region P/N
Korea 3PIN
• Longwell LP-486+KTLH03VV-F+LS-5 1m
145000558
Australia 3PIN
• Longwell LP-23A+LFC-3R+LS-18 1m
145000557
Taiwan3PIN
• Longwell LP-71+VCTF+LS-33 1m
145000556
Japan 3PIN
• Longwell LP-54+VCTF+LS-18 1m
145000555
Africa 3PIN
• Longwell LP-39+H03VV-F+LS-18 1m
145000554
CE 3PIN
• Longwell LP-34A+H03VV-F+LS-18 1m
145000553

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Table 15. Parts list—2-pin power cords
Region P/N
CCC 2PIN
• 1m power cord
TBD
Argentina 2PIN
• 1m power cord
TBD
Danmark 2PIN
• 1m power cord
TBD
Switzerland 2PIN
• 1m power cord
TBD
Brazil 2PIN
• 1m power cord
TBD
Israel 2PIN
• 1m power cord
TBD
UL 2PIN
• 1m power cord
TBD
UK 2PIN
• 1m power cord
TBD
Indian 2PIN
• 1m power cord
TBD
Italy 2PIN
• 1m power cord
TBD
Korea 2PIN
• 1m power cord
TBD
Australia 2PIN
• 1m power cord
TBD
Taiwan2PIN
• 1m power cord
TBD
Japan 2PIN
• 1m power cord
TBD
Africa 2PIN
• 1m power cord
TBD
CE 2PIN
• 1m power cord
TBD
CCC 2PIN
• 1m power cord
TBD
Argentina 2PIN
• 1m power cord
TBD
Danmark 2PIN
• 1m power cord
TBD
Switzerland 2PIN
• 1m power cord
TBD
Brazil 2PIN
• 1m power cord
TBD
Israel 2PIN
• 1m power cord
TBD

123
Lenovo IdeaPad U300/U300s/U400
Table 15. Parts list—2-pin power cords (continued)
Region P/N
UL 2PIN
• 1m power cord
TBD
UK 2PIN
• 1m power cord
TBD
Indian 2PIN
• 1m power cord
TBD
Italy 2PIN
• 1m power cord
TBD
Korea 2PIN
• 1m power cord
TBD
Australia 2PIN
• 1m power cord
TBD
Taiwan2PIN
• 1m power cord
TBD
Japan 2PIN
• 1m power cord
TBD
Africa 2PIN
• 1m power cord
TBD
CE 2PIN
• 1m power cord
TBD

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
U400
Table 16. Parts list—3-pin power cords
Region P/N
India 3pin
• VOLEX IA6A3+IS694+VAC5S 1m
145000536
Japan 3pin
• LINETEK LS15+VCTF+LP-54 1m
145000587
Japan 3pin
• Longwell LP-54+VCTF+LS-18 1m
145000555
Japan 3pin
• VOLEX VAC5S+VCTF+M755 1m
145000530
ANZ 3pin
• LINETEK LS15+H03VV-F+LP-23A 1m
145000589
ANZ 3pin
• Longwell LP-23A+LFC-3R+LS-18 1m
145000557
ANZ 3pin
• VOLEX AU10S3+H03VV-F+VAC5S 1m
145000532
TW 3pin
• LINETEK LS15+VCTF+LP-53 1m
145000588
TW 3pin
• Longwell LP-71+VCTF+LS-33 1m
145000556
TW 3pin
• VOLEX TW15CS3+VCTF+VAC5S 1m
145000531
Korea 3pin
• LINETEK LS15+H05VV-F+LP-E04A 1m
145000590
Korea 3pin
• Longwell LP-486+KTLH03VV-F+LS-5 1m
145000558
Korea 3pin
• VOLEX M2511+KETI IEC+VAC5S 1m
145000533
Italy 3pin
• LINETEK LS15+H03VV-F+PE-336 1m
145000591
Italy 3pin
• Longwell LP-22+H03VV-F+LS-18 1m
145000559
Italy 3pin
• VOLEX IT10S3+HO3VV-F+VAC5S 1m
145000535
SA 3pin
• LINETEK LS15+H03VV-F+PE-364 1m
145000586
SA 3pin
• Longwell LP-39+H03VV-F+LS-18 1m
145000554
SA 3pin
• VOLEX SA16A+HO3VV-F+VAC5S 1m
145000529
Brazil 3pin
• LINETEK LS15 H03VV-F LP26A 1m
145000596
Brazil 3pin
• Longwell LP-46+H03VV-F+LS-18 1m
145000564
Brazil 3pin
• VOLEX CH10S3+H03VV-F+VAC5S 1m
145000527

125
Lenovo IdeaPad U300/U300s/U400
Table 16. Parts list—3-pin power cords (continued)
Region P/N
Israel 3pin
• LINETEK LS15+H03VV-F+LP-41 1m
145000595
Israel 3pin
• Longwell LP-41+H03VV-F+LS-18 1m
145000563
Israel 3pin
• VOLEX SI16S3+H03VV-F+VAC5S 1m
145000526
Switzerland 3pin
• LINETEK LS15+H03VV-F+LP-37 1m
145000597
Switzerland 3pin
• Longwell LP-37+H03VV-F+LS-18 1m
145000565
Switzerland 3pin
• VOLEX MP232+H03VV-F+VAC5S 1m
145000524
Danmark 3pin
• LINETEK LS15+H03VV-F+LP-38 1m
145000598
Danmark 3pin
• Longwell LP-40+H03VV-F+LS-18 1m
145000566
Danmark 3pin
• VOLEX MP233D+H03VV-F+VAC5S 1m
145000534
Argentina 3pin
• LINETEK LS15+H03VV-F+LP39 1m
145000599
Argentina 3pin
• Longwell LP-24+H03VV-F+LS-18 1m
145000567
Argentina 3pin
• VOLEX VA2073+H03VV-F+VAC5S 1m
145000528
CCC 2pin
• LINETEK PC205+RVV 0.75/2C+COC03 1m
145500018
ARGENTINA 2pin
• LINETEK LP40+H03VVH2-F+LS7H 1m
145500030
BRAZIL 2pin
• LINETEK LP25+H03VVH2-F+LS7H 1m
145500028
ISRAEL 2pin
• LINETEK LP45+H03VV-F+LS7 1m
145500029
UL 2pin
• LINETEK LP5+SPT-2 #18/2C+ LS7C 1m
145500021
UK 2pin
• LINETEK LP61L+H03VVH2-F+ LS7H 1m
145500019
Indian 2pin
• LINETEK LP28+IS:694 0.75/2C+ LS7H 1m
145500020
Korea 2pin
• LINETEK LPE03A+H03VVH2-F+LS7 1m
145500025
Australia 2pin
• LINETEK LP15A+H03VVH2-F+LS7 1m
145500023
Taiwan 2pin
• LINETEK LP51A+VCTFK 0.75/2C+LS7J 1m
145500027

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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
Table 17. Parts list—2-pin power cords
Region P/N
Japan 2pin
• LINETEK LP51A+HVCTFK 0.75/2C+LS7J 1m
145500026
Africa 2pin
• LINETEK PE364("O")+H03VVH2-F+LS7H 1m
145500024
CE 2pin
• LINETEK LP21+H03VVH2-F+ LS7 1m
145500022

127
Notices
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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
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
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