Lenovo N100 manual Removing and replacing a FRU

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Removing and replacing a FRU

Removing and replacing a FRU

This section presents directions and drawings for use in removing and replacing a FRU. Be sure to observe the following general rules:

1.Do not try to service any computer unless you have been trained and certified. An untrained person runs the risk of damaging parts.

2.Before replacing any FRU, review “FRU replacement notices” on page 41.

3.Begin by removing any FRUs that have to be removed before the failing FRU. Any 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 for removing the FRU, as given in the drawings by the numbers in square callouts.

5.When turning a screw to replace a FRU, turn it in the direction as given by the arrow in the drawing.

6.When removing the FRU, move it in the direction as given by the arrow in the drawing.

7.To put the new FRU in place, reverse the removal procedure and follow any notes that pertain to replacement. For information about connecting and arranging internal cables, see “Locations” on page 76.

8.When replacing a 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 interconnecting cables.

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

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

44MT 0689, 0690, 0768

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Contents Lenovo 3000 N100 Hardware Maintenance Manual Page Lenovo 3000 N100 Hardware Maintenance Manual Page Contents Iv MT 0689, 0690 About this manual Important service informationBefore replacing parts Strategy for replacing FRUsImportant notice for replacing a system board How to use error messagesStrategy for replacing a hard disk drive Using the HMM Using PC Entitlement Warehouse PEWUsing eSupport Important information about replacing RoHS compliant FRUs Diskette compatibility matrix Safety notices multilingual translationsSafety notice Diskette Compatibility Drive CapacitySafety notices Safety notices Safety notices Safety notices 10 MT 0689, 0690 Electrical safety Safety informationGeneral safety 12 MT 0689, 0690 Safety inspection guide Grounding requirements Laser compliance statement 16 MT 0689, 0690 Read this first What to do firstFollowing are not covered under warranty Read this firstRecovery to Factory Contents by using Product Recovery CDs Related service informationService Web site Restoring the pre-installed system Passwords How to remove the power-on passwordHow to remove the hard-disk password Select Power-On PasswordStandby mode Power managementScreen blank mode Select Master HDPHibernation mode Checkout guide Testing the computerCreating the PC-Doctor diagnostics diskette Diagnostics Interactive Tests Hardware Info Power system checkoutDetecting system information with PC-Doctor UtilityPin Voltage V dc Checking the battery packChecking operational charging Terminal Voltage V dc Lenovo 3000 N100 Product overview SpecificationsFeature Description Lenovo 3000 N100 Green Status indicatorsIndicator Meaning Blinking greenFRU tests Fn key combinations Key combination DescriptionSymptom-to-FRU index Numeric error codesSoftware NMI failed System board 02F7 Fail-safe timer NMI failed System boardDMA test failed System board 02F6 Error messages Beep symptoms No-beep symptomsSymptoms LCD-related symptomsReseat the LCD connectors LCD assemblyIntermittent problems Undetermined problemsRetaining serial numbers FRU replacement noticesScrew notices Reading or writing the ECA information Restoring the serial number of the system unitRetaining the Uuid Select 2. Read S/N data from EepromFRU replacement notices Removing and replacing a FRU Battery pack Step Screw quantity Color Torque Hard disk drive slot coverHard disk drive PCI Express Mini Card for wireless LAN Dimm slot cover DimmFor MT0768 Optical driveFor MT0689 Thermal module slot cover and fan Thermal module 52 MT 0689, 0690 1100 CPU Cover, strip E cover Keyboard 56 MT 0689, 0690 Function board LCD unit Removing and replacing a FRU 60 MT 0689, 0690 M2.5 × 6 mm, flat-head, nylon-coated Black 392 Nm Kgfcm For MT 0689 Are only for MT 0689For MT Are only for MT64 MT 0689, 0690 M2 × 4 mm, flat-head, nylon-coated Black 245 Nm Kgfcm 1160 USB/Audio connector card VGA connector card 68 MT 0689, 0690 M2.5 × 3 mm, flat-head, nylon-coated Black 392 Nm Kgfcm To remove the MDC, do as follows LCD front bezel B cover Step Screw cap Screw quantity Color TorqueInverter card LCD panel, LCD cable, and hinges Remove the hinges from the LCD panel Are only for MT0768 Camera and LCD rear cover assembly a cover Locations Front view Rear view Bottom viewParts list Overall FRU FRU no RoHS CRUAC adapters AstecLCD FRUs 14.1-in. Wxga TFT15.4-in. Wxga TFT 15.4-in. WSXGA+ TFTLanguage RoHS ChiconyRecovery CDs Windows XP ProfessionalWindows XP Home Edition TBDBluetooth cable Miscellaneous partsTool Common parts listTools Power cords Region RoHS90 MT 0689, 0690 Trademarks Part Number 41W7535
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N100 specifications

The Lenovo N100 is a budget-friendly laptop that embodies practicality without sacrificing essential performance features. Designed for students and professionals alike, it combines mobility with reliability, making it a suitable choice for everyday computing tasks.

One of the standout features of the Lenovo N100 is its efficient Intel processor. Depending on the specific configuration, users can expect either the Intel Celeron or Pentium M processors, providing sufficient power for basic applications, web browsing, and productivity software. The laptop is equipped with up to 1GB of RAM, ensuring smooth multitasking capabilities for users working on several applications simultaneously.

In terms of storage, the N100 includes options that range from 40GB to 80GB hard drives. This capacity caters well to the needs of users who require ample storage for documents, media, and various software applications. The integrated CD/DVD drive further enhances its versatility, enabling users to read and write discs, which is particularly useful for those who rely on physical media.

The Lenovo N100 features a 14-inch display with a resolution of 1280x800 pixels, providing a decent viewing experience for its size. The screen's size strikes a good balance between portability and usability, making it easy to work on for extended periods without straining the eyes. Additionally, the inbuilt Intel Graphics Media Accelerator 900 offers sufficient graphical performance for light gaming and multimedia tasks.

Connectivity options on the Lenovo N100 include several USB 2.0 ports, an Ethernet port, and a VGA output, which allow for connecting various peripherals and external displays. The laptop also includes a 56K modem, making it adaptable to older connectivity setups. Integration of Wi-Fi support provides users the freedom to connect to wireless networks, enhancing functionality for both home and office use.

Another significant characteristic of the N100 is its durable design. While its aesthetics may be straightforward, the solid build quality ensures that it withstands the rigors of daily use. This toughness is complemented by a battery life that can last several hours, allowing users the flexibility to work on the go without the constant need for a power outlet.

In conclusion, the Lenovo N100 stands out as a reliable and affordable laptop option, equipped with essential features that cater to basic computing needs. Its combination of performance, storage, and connectivity makes it a practical choice for users looking for value and reliability in their laptop purchase.
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