Lenovo N200 LCD-related symptoms, Reseat the LCD connectors, See important note for LCD-related

Page 45

Symptom-to-FRU index

LCD-related symptoms

Important

The TFT LCD for the notebook computer contains many thin-film transistors (TFTs). The presence of a small number of dots that are missing, discolored, or always lighted is characteristic of TFT LCD technology, but excessive pixel problems can cause viewing concerns. The LCD should be replaced if the number of missing, discolored, or lighted dots in any background is:

vWXGA: 8 or more bright dots, 8 or more dark dots, or a total of 9 or more bright and dark dots.

Note: A bright dot means a pixel is always on (white or color.) A dark dot means a pixel is always off (black color.)

Symptom or error

FRU or action, in sequence

 

 

No beep, power-on indicator on, and a

System board.

blank LCD during POST.

 

 

 

 

 

v LCD backlight not working.

1.

Reseat the LCD connectors.

v

LCD too dark.

2.

LCD assembly.

v LCD brightness cannot be adjusted.

3.

System board.

v LCD contrast cannot be adjusted.

 

 

v

LCD screen unreadable.

1.

See important note for “LCD-related

v

Characters missing pixels.

 

symptoms.”

v

Screen abnormal.

2.

Reseat all LCD connectors.

v

Wrong color displayed.

3.

LCD assembly.

 

 

4.

System board.

 

 

Horizontal or vertical lines displayed on

LCD assembly.

LCD.

 

 

 

 

 

 

Lenovo 3000 N200 39

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Contents Lenovo 3000 N200 Hardware Maintenance Manual Page Lenovo 3000 N200 Hardware Maintenance Manual First Edition May Copyright Lenovo 2007. All rights reserved Contents Iv MT Before replacing parts Important service informationAbout this manual Strategy for replacing FRUsHow to use error messages Strategy for replacing a hard disk driveImportant notice for replacing a system board Using PC Entitlement Warehouse PEW Using eSupportUsing the HMM Important information about replacing RoHS compliant FRUs Safety notice Safety notices multilingual translationsDiskette compatibility matrix Diskette Compatibility Drive CapacitySafety notices Safety notices Safety notices Safety notices 10 MT Safety information General safetyElectrical safety 12 MT Safety inspection guide Grounding requirements Laser compliance statement 16 MT What to do first Read this firstRead this first Following are not covered under warrantyRelated service information Power-on password PasswordsHow to remove the hard-disk password How to remove the power-on passwordSelect Power-On Password*1 Select Master HDPScreen blank mode Power managementSleep standby mode Hibernation modeRelated service information Testing the computer Creating the PC-Doctor diagnostics disketteCheckout guide Diagnostics Interactive Tests Detecting system information with PC-Doctor Power system checkoutHardware Info UtilityChecking the ac adapter Checking the battery packChecking operational charging Pin Voltage V dcTerminal Voltage V dc Lenovo 3000 N200 Product overview Product overview Feature DescriptionStatus indicators Indicator MeaningGreen FRU tests Key combination Description Fn key combinationsNumeric error codes Symptom-to-FRU indexFail-safe timer NMI failed System board DMA test failed System board 02F6Software NMI failed System board 02F7 Error messages Make sure that every connector is No-beep symptomsConnected tightly and correctly Reseat DimmReseat the LCD connectors LCD-related symptomsSymptoms LCD assemblyUndetermined problems Intermittent problemsFRU replacement notices Screw noticesRetaining serial numbers Retaining the Uuid Restoring the serial number of the system unitReading or writing the ECA information Select 2. Read S/N data from EepromFRU replacement notices Removing and replacing a FRU Battery pack Hard disk drive Hard disk drive slot coverDimm slot cover Dimm Step Screw quantity Color Torque PCI Express Mini Card for 802.11 a/b/g wireless LANPCI Express Mini Card for 802.11 a/b/g/n wireless LAN Optical drive Heat sink assembly slot cover Heat sink assembly 54 MT 1110 CPU Middle cover and function board For access, remove this FRU Battery pack onM2 × 3 mm, pan-head, nylon-coated Black 392 Nm Kgfcm Keyboard When installing Keyboard bezel and fingerprint reader card Removing and replacing a FRU 62 MT Removing and replacing a FRU Backup battery Modem daughter card MDC Bluetooth daughter card BDC LCD unit 68 MT M2.5 × 6 mm, pan-head, nylon-coated Dark silver 392 Nm Kgfcm To remove the 5-1 Digital Media Reader board, do as follows To remove the ExpressCard slot, do as follows Step Screw cap Screw quantity Color Torque LCD front bezelInverter card LCD panel, LCD cable, and hinges Remove the hinges from the LCD panel Camera and LCD rear cover assembly For the antennas with two cables Wireless LAN antenna cablesFor the antennas with three cables Locations Front view Bottom view Rear viewInternal CRUs located behind an access panel Parts listExternal CRUs pluggable External CRUs with latchesOverall FRU CRU FRU no RoHSParts list Hlds LCD FRUs 14.1-in. Wxga TFTLCD front bezel 41R7520 CMO Chicony Language RoHSRecovery discs Windows Vista Home Premium 32 bit DVDs Recovery discsWindows Vista Home Basic 32 bit DVDs Windows Vista Business 32 bit DVDs Windows Vista Ultimate 32 bit DVDs AC adapters Corel software CDsMiscellaneous parts Common parts listTools ToolPower cords Region Volex RoHSLongwell Lenovo 3000 N200 Trademarks Trademarks Part Number
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N200 specifications

The Lenovo N200 is a versatile laptop designed to cater to the needs of both professionals and students looking for a reliable computing solution. This model stands out in the competitive laptop market thanks to its blend of performance, durability, and affordability.

One of the main features of the Lenovo N200 is its robust build quality. Using high-quality materials, this laptop can withstand the rigors of daily use, making it an excellent choice for those who travel frequently or require a device that can handle day-to-day wear and tear. The sleek design not only gives it a modern aesthetic but also enhances portability, weighing in at an acceptable range that allows users to carry it with ease.

When it comes to performance, the Lenovo N200 typically comes equipped with Intel Core processors, providing sufficient power for multitasking and demanding applications. This makes it suitable for professional tasks, including data processing, graphic design, and even light gaming. The system’s RAM capacity generally ranges from 4GB to 8GB, which allows for smooth performance when running multiple applications simultaneously.

The display of the N200 is another noteworthy feature. It usually sports a 15.6-inch HD screen, providing crisp visuals and vibrant colors for an enjoyable viewing experience, whether you are watching videos, working on projects, or browsing the web. The anti-glare technology applied to the display also helps reduce eye strain during extended use, proving beneficial for students and professionals alike.

In terms of storage, users can expect a decent HDD or SSD option that offers enough space for documents, media, and software applications. The SSD option typically ensures faster boot-up times and quicker file access, enhancing overall system responsiveness.

Connectivity is not overlooked in the Lenovo N200, which comes with various ports, including USB, HDMI, and Ethernet, enabling users to connect their devices with ease. Wireless capabilities typically include Wi-Fi and Bluetooth, facilitating seamless connectivity to the internet and other devices.

Overall, the Lenovo N200 encapsulates the essential features and technologies that users seek in a dependable laptop. With its blend of performance, build quality, and modern features, it serves as an excellent entry-level option for those looking to balance quality with budget considerations.
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