NEC NEC Versa 2500 Series User's Guide 25-10584-00 warranty Cleaning the Notebook’s Interior

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4-2 Field Service Guidelines

Cleaning the Notebook’s Interior

When servicing the inside of the notebook to remove dust and other foreign particles pro- ceed as follows:

1.Remove the top cover, hinge covers, status bar, and keyboard using the disas- sembly procedures discussed later.

2.Dust or vacuum (with a rubber-tipped nozzle) the inside of the system unit, par- ticularly the system board surface. Use care to avoid damaging or dislodging any components or cables.

3.Inspect all cable connectors for damage. Ensure that all connectors are seated properly before replacing the cover.

Protecting the Disk Drives

To protect the disk drives and data, we recommend that you back up the system disk peri- odically on diskettes. Occasionally use a head-cleaning diskette in the diskette drive to pro- long the life of the drive and to help maintain data integrity.

Here are some preventive maintenance tips that we recommend you use when handling the hard disk:

Periodically back up the data files from the hard disk.

Run a virus detection program to identify possible viruses on the hard disk.

Use SCANDISK to correct any errors found in the directory and File Allocation

Table (FAT). This will also free up space from any unused sectors.

Never turn the computer off when the hard disk is being accessed.

Never move or raise the computer while the hard disk is being accessed, impor-

Ttantly don't jar the hard disk, as this may cause a hard disk crash.

Use hard disk maintenance programs like DEFRAG under DOS or Norton Utili- ties SPEEDISK to reorganize your hard disk by eliminating fragmentation and improving hard disk access time.

Handling the Computer Battery Packs

The battery packs furnished with the computer require reasonable care and handling to en- sure efficient operation and maximum life. Periodically inspect the battery terminals and the batteries for evidence of corrosion and/or oxide build-up.

To ensure that the battery packs endure a normal life cycle, always observe the following precautions when handling the battery packs:

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Contents Sold by laptopia2005 do not Resell Preface Contents System Bios Upgrade Procedure Assembly Removing/Replacing the LED Board Removing/Replacing the Heat PlateVGA Standard Modes VGA Extended Modes VGA High Refresh Modes List of Tables Viii Contents Sold by laptopia2005 do not Resell For United States Use Only Direct memory access Bios Customized UtilityBios Upgrade Utility Error checking and correctionNational Service Response Service registerNational Authorized Service Phase lock loopVolt Universal asynchronousReceiver/transmitter Vdc Volts, direct currentConfiguration NEC Versa Model ConfigurationIntel P54CSLM-133 Feature Highlights Feature HighlightsSystem Configuration System Configuration DiagramQuick Tour of the Notebook Power Switch/LCD Cover SwitchStatus Panel and Power Indicator Main ComponentsDed keys are located. Press the Num Lock key Disables the alphanumeric keys where the embedAgain to disable the embedded keys and resume Normal keyboard operationFn Key Combination Summary cont’d VersaGlideBuilt-in Disk Drive Right Side of the NotebookMemory Slot Compartment PC Card Slot CompartmentBattery Compartment Front of the NotebookRemoving the Battery Pack Left Side of the NotebookRear of the Notebook 11 Connecting an External Keyboard and PS/2 Mouse VGA Port Bottom of the Notebook Printer PortBattery Module Handle and Lock ROM Memory Compartment CoverSystem Bios Setup Program Boot Setup MenuBoot Main Setup Menu Option is 3.5, 1.44 MB disk driveBoot Main Setup Menu cont’d Boot Setup Peripherals MenuPassword on Boot Boot Setup Security MenuFunction Password Password on RePower Saving Boot Setup Power Savings MenuStandby Time-out Boot Setup Power Savings Menu cont’d System UpgradesMemory Upgrade Procedure 16 MB Memory ConfigurationsSystem Bios Upgrade Procedure Sold by laptopia2005 do not Resell General Specifications NEC Versa 2500 Series SpecificationsNEC Versa 2500 Series Specifications cont’d Sold by laptopia2005 do not Resell AC 100V to 240V, 47/63Hz, 36W Max CD-ROM Product Mix Product MIXFollowing table lists the NEC Versa 2500 Series product mix VersaFollowing table lists system board specifications System Board SpecificationsMain Board Specifications Following table lists Transfer board specifications Transfer Board SpecificationsConverter Board Specifications Following table lists Converter board specificationsFollowing table lists LED indicator board specifications LED Indicator Board SpecificationsLED Indicator Board Specifications Following table lists I/O board specifications Board SpecificationsI/O Board Specifications I/O Board Specifications cont’d LCD Inverter Board Specifications LCD Inverter Board SpecificationsFollowing table lists LCD inverter board specifications Specification10 Diskette Drive Specifications LED Status IndicatorsDiskette Drive Specifications Status LED DescriptionsNimh Battery Pack Specifications HDD Unit SpecificationsCD-ROM Specifications Following table lists the standard battery specificationsBattery Charger Specifications DC/DC Converter & Battery Charger SpecificationsFollowing table lists battery charger specifications Following table lists keyboard specifications Keyboard SpecificationsAC/DC Adapter Specifications Following table lists AC/DC adapter specificationsFollowing table lists Bios specifications Bios Specifications18 Bios Specifications 19 Micro-Controller Specifications Following table lists Micro-Controller specifications18 Bios Specifications cont’d MICRO-CONTROLLER Function Description20 Power Management Modes Power Management Features Mode DefinitionFollowing table lists power management specifications Mode Device SpeedFollowing table lists power management transition modes Power Management Features Mode Transition21 Mode Definitions HOT KEY Definition Environmental SpecificationsFollowing table lists appropriate operating temperatures Following table lists hot key definitionsVibration Specifications Power Source SpecificationsShock Specifications Following table lists static discharge specifications ELECTRO-STATIC Discharge ESD Specifications27 Electro-Static Discharge Specifications Hardware Functional Overview Functional Block Diagram System BiosSystem Processor Major Functional BlocksSystem Logic Controller Sold by laptopia2005 do not Resell ROM Memory Memory SubsystemDram Memory SubsystemVideo Subsystem Video Chipset ControllerExternal VGA Capability Keyboard SubsystemPcmcia Controller and Sockets Hard Disk SubsystemDiskette Drive Subsystem Power SubsystemAC Power Adapter Poin ING Device SubsystemPower Board Internal Battery PackLCD Inverter Board Assembly Preventive Maintenance Cleaning the Notebook’s ExteriorHandling the Computer Battery Packs Cleaning the Notebook’s InteriorProtecting the Disk Drives Maintaining the LCD Quality Required Tools and EquipmentParts Removal and Replacement Procedures Removing/Replacing the Notebook Battery PackRemoving/Replacing the Hard Disk Drive Module Removing/Replacing the Diskette Drive ModuleDiskette Drive Module Assembly Removing/Replacing the LCD Status Bar Cover and HingesRemoving/Replacing the Heat Plate Removing/Replacing the KeyboardRemoving/Replacing the CPU Removing/Replacing the Cover-Display LCD Assembly Module Removing/Replacing the LED Board LED Board Module Assembly Removing/Replacing the System Board and I/O BoardSeparating the System Board and I/O Board System Board and I/O BoardsRemoving/Replacing the Power Board I/O Board Module AssemblyNEC Versa 2500 Series Field-Replaceable Parts Illustrated Parts BreakdownDescription Part Number NEC Versa 2500 Series Field-Replaceable Parts cont’d Not shown in IPB figureNEC Versa 2500 Series Illustrated Parts Breakdown Packaging and Documentation Packaging and Documentation Part NumbersService Call Service InformationNEC Service and Information Telephone Numbers Technical SupportProduct Information Ordering Information from FastFactsHelpful Starters Post Messages POWER-ON Self Test PostPost Error Messages Message Possible Cause ActionPost Error Messages cont’d SetupValue , read hex-value Bios Informational Messages Informational MessagesRun-time Error Messages Run-time Error MessagesFollowing table lists run-time error messages Message Cause ActionQuick Troubleshooting Quick TroubleshootingProblem Corrective Actions Quick Troubleshooting cont’d Sold by laptopia2005 do not Resell VGA Standard Modes Table A-1 VGA Standard Modes Text ModeFollowing table lists VGA standard modes Table A-3 VGA Standard Modes Planar Mode Table A-2 VGA Standard Modes Graphics ModeTable A-4 VGA Standard Modes Packed Pixel Mode Table A-7 VGA Extended Modes 8-Bit Linear Mode Table A-5 VGA Extended Modes Text ModeTable A-6 VGA Extended Modes 4-Bit Linear Mode Table A-8 VGA Extended Modes 15-Bit Linear ModeTable A-11 VGA Extended Modes Planar Mode Table A-10 VGA Extended Modes 24-Bit Linear ModeTable A-12 VGA Extended Modes Packed Pixel Mode Table A-15 VGA High Refresh Modes Packed Pixel Mode Table A-13 VGA High Refresh Modes Packed Pixel ModeTable A-14 VGA High Refresh Modes Planar Mode VGA High Refresh ModesBattery Replacement Index Memory Index-3

NEC Versa 2500 Series User's Guide 25-10584-00, NEC Computer Systems Division, Packard Bell NEC, Inc specifications

NEC Computer Systems Division was a prominent entity in the realm of personal computing, renowned for its innovative products and advanced technologies. One of its most notable contributions to the market was the Packard Bell NEC, Inc., a brand that combined the strengths of two industry giants to offer cutting-edge computing solutions. Among the various products offered by this partnership, the NEC Versa 2500 Series stood out as a noteworthy achievement, embodying a blend of portability, performance, and user-centric design.

The NEC Versa 2500 Series was designed primarily for business and professional users who required a reliable and efficient mobile computing solution. Its main features included a sleek and lightweight design, making it easy for users to carry the device wherever their work took them. The laptop was equipped with a robust Intel processor, delivering commendable performance for a variety of applications, from word processing to graphics design.

One of the defining characteristics of the Versa 2500 Series was its versatility. Featuring a modular bay design, users could customize their system with a variety of add-ons such as additional drives, batteries, or even a second hard drive. This allowed professionals to tailor their device to better meet their specific needs, enhancing productivity on the go.

In terms of display, the NEC Versa 2500 Series boasted a vibrant screen that provided clear and bright visuals, essential for presentations and detailed work. The keyboard was ergonomic, ensuring comfortable typing for extended periods, a crucial aspect for business users who often found themselves working long hours. Additionally, the laptop included a range of connectivity options, such as USB ports, a floppy disk drive, and expansion slots, making it easy to link with other devices and peripherals.

The NEC Versa 2500 Series also incorporated advanced technologies that enhanced its performance and user experience. Its energy-efficient design contributed to longer battery life, allowing users to work uninterrupted even while traveling. The inclusion of NEC’s proprietary software solutions further optimized the device's performance, ensuring smooth operation and increased efficiency.

In summary, the NEC Versa 2500 Series, under the umbrella of NEC Computer Systems Division and Packard Bell NEC, Inc., offered a compelling combination of features, technologies, and characteristics that catered to the needs of mobile professionals. With its emphasis on portability, modularity, and efficiency, the Versa 2500 Series solidified its position as a preferred choice for those seeking a dependable mobile computing solution in the competitive landscape of the late 1990s and early 2000s.
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