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Lenovo U400 manual

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Table of contents for the manual

  • Page 1

    Leno v o IdeaP ad U300/ U300s/U400 Hardw are Maintenance Manual[...]

  • Page 2

    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. 201 1) © Copyright Lenovo 201 1. All rights reserved. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant a General Services Administration “GSA” contract, use[...]

  • Page 3

    iii Contents About this manual ....................................... iv Safety information ........................................ 1 General safety ................................................ 2 Electrical safety .............................................. 3 Safety inspection guide .................................. 5 Handling devices tha[...]

  • Page 4

    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 servici[...]

  • Page 5

    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 sensiti[...]

  • Page 6

    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 o[...]

  • Page 7

    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 t[...]

  • Page 8

    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 . T[...]

  • Page 9

    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. Y ou should use good judgment to ident[...]

  • Page 10

    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 [...]

  • Page 11

    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 t[...]

  • Page 12

    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 i[...]

  • Page 13

    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 incorrec[...]

  • Page 14

    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 loca[...]

  • Page 15

    11 Safety information Safety notice 5 If the LCD breaks and the uid fro m 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’afchage à cristaux liquides se brise et que [...]

  • Page 16

    12 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual Safety notice 6 DANGER T o avoid shock, do not remove the plastic cover that protects the lower part of the inverter card. An d’éviter tout risque de choc électrique, ne retirez pas le cache en plastique protégeant la partie inférieure de la carte d’alimentation. Aus Sicherhei[...]

  • Page 17

    13 Safety information Safety notice 8 DANGER Before removing any FRU, turn off the computer , unplug all power cords from electrical outlet s, remove the battery pack, an d then disconnect any interconn ecting cables. A vant de retirer une unité remplaçable en clientèle, mettez le système hors tension, débranchez tous les cordons d’alimentat[...]

  • Page 18

    14 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 certied in the U.S. to[...]

  • Page 19

    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. Rad[...]

  • Page 20

    16 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 • “Impor[...]

  • Page 21

    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 a nd a syst em board. If you • are inst[...]

  • Page 22

    18 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual Important information about replacing RoHS compliant FRUs RoHS, The Restriction of Hazardous Substances in Electrical and Elec tro nic E quip men t Direc tiv e (2002 /95/ EC) i s a Eu rope an Unio n legal requirement affecting the global electronics industry . RoHS requirements must be i[...]

  • Page 23

    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: • Onlycertiedtrainedpersonnelcanservicethecomputer . •[...]

  • Page 24

    20 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 inde[...]

  • Page 25

    21 General checkout Power system checkout T o verify a symptom, follow the steps below: 1. T urn off the computer . 2. Connect the AC adapter . 3. Make sure that power is supplied when you turn on the computer . 4. T urn off the computer . 5. Disconnect the AC adapter . 6. Make sure that the battery pack supplies power when you turn on the computer[...]

  • Page 26

    22 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 n[...]

  • Page 27

    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 Id[...]

  • Page 28

    24 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 [...]

  • Page 29

    25 Related service information Power management Note: Power management modes are not supported for APM operating system. T o 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 “T urn off monitor” timer in the operating system expires, [...]

  • Page 30

    26 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. • T o cause the computer to enter hibernation mode, follow the steps below: If you are using the ACPI operating system an[...]

  • Page 31

    27 Lenovo IdeaPad U300/U300s/U400 Lenovo IdeaPad U300/U300s/U400 This chapter presents the following product-specific service references and product-specic parts information: • “Specications” on page 27 • “Status indicators” on page 29 • “Function key combinations” on page 31 • “FRU replacement notices” on page 32 • [...]

  • Page 32

    28 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual T able 1. Specications (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 Headp[...]

  • Page 33

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

  • Page 34

    30 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual T able 2. Status indicators (continued) Indicator Meaning 2 Battery 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% o[...]

  • Page 35

    31 Lenovo IdeaPad U300/U300s/U400 Function key combinations The following table shows the function of each combination of function key . T able 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 sc[...]

  • Page 36

    32 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual FRU replacement notices This s ect ion pr ese nts no tic es rela ted to r emo vin g a nd repl aci ng part s. 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 sp[...]

  • Page 37

    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 fo llowing general rules: 1. Do not attempt to service any computer unless you have been trained and certied. An untrained person runs the risk of da[...]

  • Page 38

    34 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual U300 1010 Base cover (U300) Note: T urn 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[...]

  • Page 39

    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 Labe[...]

  • Page 40

    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 specied 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 connect[...]

  • Page 41

    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: • Do not drop the hard disk drive or apply any physical shock to it. The hard disk drive is sensitive t[...]

  • Page 42

    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[...]

  • Page 43

    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 t[...]

  • Page 44

    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[...]

  • Page 45

    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[...]

  • Page 46

    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 d[...]

  • Page 47

    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. • A void rough handling of any kind. • In the whole process[...]

  • Page 48

    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 1 2 3 4 4 4 4 4 5 When installing: Make sure that all the connectors are attached rmly . Step Screw (quantity) Color[...]

  • Page 49

    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[...]

  • Page 50

    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 ?[...]

  • Page 51

    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 .[...]

  • Page 52

    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 [...]

  • Page 53

    49 Lenovo IdeaPad U300/U300s/U400 Figure 9. Removal steps of LCD unit (continued) 2 2 2 2 Step Screw (quantity) Color T orque 2 M2.5 × 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. T ensio[...]

  • Page 54

    50 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual 1 100 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[...]

  • Page 55

    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 T orque 2 M2 × 3 mm, at-head, nylok-coated (2) Black 1.5 ± 0.2 kgfcm[...]

  • Page 56

    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 T or[...]

  • Page 57

    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 T orque 8 M2 × 3 mm, at-head, nylok-coated (4) Black 1.5 ± 0.2 kgfcm[...]

  • Page 58

    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 (q[...]

  • Page 59

    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 Labe[...]

  • Page 60

    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 specied 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 conne[...]

  • Page 61

    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) Colo[...]

  • Page 62

    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: • Do not drop the solid state disk or apply[...]

  • Page 63

    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 , th[...]

  • Page 64

    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[...]

  • Page 65

    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 T orque 5 M2 × 5 mm, at-head, nylok-coated (6) Black 1.5 ± 0.2 kgfcm Lift [...]

  • Page 66

    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 T orque 9 M2 × 3 mm, at-head, nylok-coated[...]

  • Page 67

    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[...]

  • Page 68

    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 • “105[...]

  • Page 69

    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 c able (2nd) (A[...]

  • Page 70

    66 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[...]

  • Page 71

    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[...]

  • Page 72

    68 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 [...]

  • Page 73

    69 Lenovo IdeaPad U300/U300s/U400 1 100 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[...]

  • Page 74

    70 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 T orque 2 M2 × 4 mm, at-head, nylok-coated (4) White 1.5 ± 0.2 kgfcm 3 M2 × 3 mm, ?[...]

  • Page 75

    71 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[...]

  • Page 76

    72 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual 1 1 10 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. • A void rough handling of any[...]

  • Page 77

    73 Lenovo IdeaPad U300/U300s/U400 Figure 1 1. 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 T orque 1 M2 × 3 mm, at-head, nylok-coated (4) B[...]

  • Page 78

    74 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 (qua[...]

  • Page 79

    75 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 labe[...]

  • Page 80

    76 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 specied 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 connect[...]

  • Page 81

    77 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: • Do not drop the hard disk drive or apply any physical shock to it. The hard disk drive is sensitive t[...]

  • Page 82

    78 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[...]

  • Page 83

    79 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 c able (2nd) (AUX) in[...]

  • Page 84

    80 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. • A void rough handling of any ki[...]

  • Page 85

    81 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 T orque 1 M2 × 6 mm, at-head, nylok[...]

  • Page 86

    82 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 ?[...]

  • Page 87

    83 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 6 6 7 8 Step Screw (quantity) Color T orque 5 M2 × 6 mm, at-head, nyl[...]

  • Page 88

    84 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 ?[...]

  • Page 89

    85 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 .[...]

  • Page 90

    86 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[...]

  • Page 91

    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 8[...]

  • Page 92

    88 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[...]

  • Page 93

    89 Lenovo IdeaPad U300/U300s/U400 1 100 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[...]

  • Page 94

    90 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual 1 1 10 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)?[...]

  • Page 95

    91 Lenovo IdeaPad U300/U300s/U400 Figure 1 1. 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[...]

  • Page 96

    92 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual 1 120 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 [...]

  • Page 97

    93 Lenovo IdeaPad U300/U300s/U400 1 130 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)” o[...]

  • Page 98

    94 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual 1 140 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 99

    95 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 T orque 3 M2 × 2.5 mm, at-head, nylok-coated ([...]

  • Page 100

    96 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual 1 150 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 • ?[...]

  • Page 101

    97 Lenovo IdeaPad U300/U300s/U400 1 160 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 bo[...]

  • Page 102

    98 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 [...]

  • Page 103

    99 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[...]

  • Page 104

    100 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[...]

  • Page 105

    101 Lenovo IdeaPad U300/U300s/U400 Parts list This section presents the following service parts: • “Overall” on page 102 • “LCD FRUs” on page 1 1 1 • “Keyboard” on page 1 13 • “Miscellaneous parts” on page 1 16 • “AC adapters” on page 1 18 • “Power cords” on page 1 19 Notes: • Each FRU is available for all type[...]

  • Page 106

    102 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[...]

  • Page 107

    103 Lenovo IdeaPad U300/U300s/U400 T able 5. Parts list—Overall No. FRU FRU no. a-h See “Miscellaneous parts” on page 1 16. 1 Panel 13.3" CMI TBD 2 Keyboard (see “Keyboard” on page 1 13.) 3 MICKEY Micphone Board 1 10141 15 4 MICKEY Power Board 31052169 5 MICKEY LED Board 31052170 6 MICKEY DC-IN Jack W/Cable 31052176 7 MICKEY USB Boar[...]

  • Page 108

    104 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual T able 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 2000251 1 13 WiFi 2x2 BGN+BT , Liteon WB197 BGN+BT HMC 20002520 14 59WH 2S2P 8060mAh,Polymer , U3 SMP/A TL L10M4P1 1 2S2P 59[...]

  • Page 109

    105 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[...]

  • Page 110

    106 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual T able 6. Parts list—Overall No. FRU FRU no. a-i See “Miscellaneous parts” on page 1 16. 1 Panel, 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 2 MINNIE Upper Case Gray W/KB-BG 31052456 2 MINNIE U[...]

  • Page 111

    107 Lenovo IdeaPad U300/U300s/U400 T able 6. Parts list—Overall (continued) No. FRU FRU no. 6 MINNIE LED Board 31052187 7 MINNIE Micphone Board 1 1014124 8 MINNIE Thermal 31052201 9 MINNIE CPU Fan 31052203 9 MINNIE System Fan 31052204 10 DDRIII 1333 2GB, SAM M471B5773DH0-CH9 DDR3 1333 2GB 1 1012808 10 DDRIII 1333 2GB, HYN HMT325S6BFR8C-H9 N0 DDR3[...]

  • Page 112

    108 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual U400 2 5 c b 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[...]

  • Page 113

    109 Lenovo IdeaPad U300/U300s/U400 T able 7. Parts list—Overall No. FRU FRU no. a-l See “Miscellaneous parts” on page 1 16. 1 LCD unit (see “LCD FRUs” on page 1 1 1.) 2 Keyboard (see “Keyboard” on page 1 13.) 3 LU47 Upper Case W/EN KB/DC/POW Cable 31052386 3 LU47 Upper Case W/UK KB/DC/POW Cable 31052387 3 LU47 Upper Case W/LA KB/DC/PO[...]

  • Page 114

    1 10 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual T able 7. Parts list—Overall (continued) No. FRU FRU no. 14 WD WD7500BPVT -24HXZ 5400RPM 750G 16004848 14 T oshiba MK7575GSX 5400RPM 750G HDD 16005334 14 HT HTS547575A9E384 5400RPM 750G HDD 16200008 14 Seagate ST9750423AS 5400RPM 750G HDD 16005333 14 Seagate ST9500423AS 7200RPM 500G [...]

  • Page 115

    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[...]

  • Page 116

    1 12 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual 14.0-in. HD TFT T able 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 3 Panel, 14.0", AUO, B140XW03 V0 18003943 3 Panel, 14.0", CMI, N140BGE-L41 18004804 3 Panel, 14.0", LGD, L[...]

  • Page 117

    1 13 Lenovo IdeaPad U300/U300s/U400 Keyboard T able 9. Parts list—Keyboard P/N Sunrex (U300/ U300s) JMET3SCZSK85keyBLKKeyKBD 25200278 JMET3SBulgarian85keyBLKKeyKBD 25200277 JMET3SUI84keyBLKKeyKBD 25200276 JMET3SSwiss85keyBLKKeyKBD 25200275 JMET3SSLN85keyBLKKeyKBD 25200274 JMET3SIceland85keyBLKKeyKBD 25200273 JMET3SBelgian85keyBLKKeyKBD 25200272 J[...]

  • Page 118

    1 14 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual T able 9. Parts list—Keyboard (continued) P/N Darfon (U300/ U300s) DFT3SGerman85keyBLKKeyKBD 25200292 DFT3SFrench85keyBLKKeyKBD 25200291 DFT3SRussian84keyBLKKeyKBD 25200290 DFT3STC84keyBLKKeyKBD 25200289 DFT3SKorean84keyBLKKeyKBD 25200288 DFT3SENCanada85keyBLKKeyKBD 25200287 DFT3SLat[...]

  • Page 119

    1 15 Lenovo IdeaPad U300/U300s/U400 T able 9. Parts list—Keyboard (continued) P/N Darfon (U400) DFT3S7SLN85keyBLKKeyKBD 25200245 DFT3S7Iceland85keyBLKKeyKBD 25200244 DFT3S7Belgian85keyBLKKeyKBD 25200243 DFT3S7Nordic85keyBLKKeyKBD 25200242 DFT3S7Hungarian85keyBLKKeyKBD 25200241 DFT3S7HebrewB84keyBLKKeyKBD 25200240 DFT3S7Greek84keyBLKKeyKBD 2520023[...]

  • Page 120

    1 16 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual Miscellaneous parts U300 T able 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 T ouchPad Cable • ( d ) MICKEY Minphone Board Cable • ( e [...]

  • Page 121

    1 17 Lenovo IdeaPad U300/U300s/U400 U400 T able 12. Parts list—Miscellaneous parts FRU P/N System miscellaneous parts: • ( a ) LU47 T ouchPad 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 Rubbe[...]

  • Page 122

    1 18 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual AC adapters T able 13. Parts list—AC adapters FRU P/N 65W , Delta ADP-65KH BD 20V/3.25A Adapter 36001929 65W , Liteon P A-1650-56LC20V3.25A Adapter 36001651 65W , Brazil P A-1650-52LB Adapter 36001714 65W , Chicony CP A-A065 20V3.25A Adapter(330PF) 36001943 Slim 65W , Delta 20V3.25A [...]

  • Page 123

    1 19 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 T able 14. Parts list—3-pin power cords Region P/N CCC 3PIN • SSD YD-1 18-1+IEC53RVV+SSD-3-2B-1 1m 145000602 CCC 3PIN • LINETEK PC323+RVV300/300+LS15 1m 145000600 Argentin[...]

  • Page 124

    120 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual T able 14. Parts list—3-pin power cords (continued) Region P/N Indian 3PIN • VOLEX IA6A3+IS694+V AC5S 1m 145000536 Switzerland 3PIN • VOLEX MP232+H03VV -F+V AC5S 1m 145000524 Italy 3PIN • VOLEX IT10S3+HO3VV -F+V AC5S 1m 145000535 Denmark 3PIN • VOLEX MP233D+H03VV -F+V AC5S 1m [...]

  • Page 125

    121 Lenovo IdeaPad U300/U300s/U400 T able 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 T aiwan3PIN • Longwell LP-71+VCTF+LS-33 1m 145000556 Japan 3PIN • Longwell LP-54+VCTF+LS-18 1m 145000555 Africa 3PIN • Lon[...]

  • Page 126

    122 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual T able 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 cor[...]

  • Page 127

    123 Lenovo IdeaPad U300/U300s/U400 T able 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 T aiwan2PIN • 1m power cord TBD Japan 2PIN • 1m p[...]

  • Page 128

    124 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual U400 T able 16. Parts list—3-pin power cords Region P/N India 3pin • VOLEX IA6A3+IS694+V AC5S 1m 145000536 Japan 3pin • LINETEK LS15+VCTF+LP-54 1m 145000587 Japan 3pin • Longwell LP-54+VCTF+LS-18 1m 145000555 Japan 3pin • VOLEX V AC5S+VCTF+M755 1m 145000530 ANZ 3pin • LINETE[...]

  • Page 129

    125 Lenovo IdeaPad U300/U300s/U400 T able 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+V AC5S 1m 145000526 Switzerland 3pin • LINETEK LS15+H03VV -F+LP-37 1m 145000597 Switzerland 3p[...]

  • Page 130

    126 Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual T able 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[...]

  • Page 131

    127 Notices Notices Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Leno[...]

  • Page 132

    128 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 guara ntee that these measurements [...]