NEC NEC Computer Systems Division, Packard Bell NEC, Inc warranty Quick Troubleshooting

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Troubleshooting and Repair 5-9

QUICK TROUBLESHOOTING

This section summarizes problems that may develop during system operation and lists sug- gested corrective actions.

Table 5-5 Quick Troubleshooting

 

 

Problem

Corrective Actions

 

 

No power

Check that the AC adapter is plugged into the

 

power connector of the system. Also, that the AC

 

adapter is plugged into a properly grounded AC

 

power outlet.

 

If using the battery as main power source, check

 

if the battery pack is of the right type, charged

 

and is inserted correctly.

 

Check the power board of the system. Is it

 

inserted into the system board connector

 

properly? Otherwise, replace the power board.

Data on the LCD is unreadable

Adjust the brightness and contrast display

 

controls found on the right side of the LCD panel.

 

Check if the LCD cables are inserted properly.

 

Check also connections inside the LCD panel.

 

Check if installed VGA driver is correct.

 

Check VGA controller chip on the system board

 

if there is any cold or loose soldering.

 

Replace the system board.

LCD screen does not show data

Check the LED Status Bar if Suspend mode is

 

activated. Press any key or press the power

 

button to resume operation and display.

 

Check if LCD cables are disconnected or loose.

 

Check if the display output is switched to the

 

external monitor.

 

Check if the Contrast level is set to minimum.

 

Check if there is power.

 

Replace LCD Inverter board found inside the

 

LCD Panel.

Battery Power does not last

Make sure that the power management features

 

are enabled.

Recharge the battery pack for 1½ hour before using again.

Replace the battery pack.

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Contents Sold by laptopia2005 do not Resell Preface Contents System Bios Upgrade Procedure Removing/Replacing the Heat Plate Assembly Removing/Replacing the LED BoardVGA 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 Bios Upgrade Utility Bios Customized UtilityDirect memory access Error checking and correctionNational Authorized Service Service registerNational Service Response Phase lock loopReceiver/transmitter Universal asynchronousVolt Vdc Volts, direct currentModel Configuration Configuration NEC VersaIntel P54CSLM-133 Feature Highlights Feature HighlightsSystem Configuration Diagram System ConfigurationStatus Panel and Power Indicator Power Switch/LCD Cover SwitchQuick Tour of the Notebook Main ComponentsAgain to disable the embedded keys and resume Disables the alphanumeric keys where the embedDed keys are located. Press the Num Lock key Normal keyboard operationVersaGlide Fn Key Combination Summary cont’dMemory Slot Compartment Right Side of the NotebookBuilt-in Disk Drive PC Card Slot CompartmentFront of the Notebook Battery CompartmentLeft Side of the Notebook Removing the Battery PackRear of the Notebook 11 Connecting an External Keyboard and PS/2 Mouse VGA Port Printer Port Bottom of the NotebookROM Memory Compartment Cover Battery Module Handle and LockBoot Setup Menu System Bios Setup ProgramOption is 3.5, 1.44 MB disk drive Boot Main Setup MenuBoot Setup Peripherals Menu Boot Main Setup Menu cont’dFunction Password Boot Setup Security MenuPassword on Boot Password on ReBoot Setup Power Savings Menu Power SavingStandby Time-out Memory Upgrade Procedure System UpgradesBoot Setup Power Savings Menu cont’d 16 MB Memory ConfigurationsSystem Bios Upgrade Procedure Sold by laptopia2005 do not Resell NEC Versa 2500 Series Specifications General SpecificationsNEC Versa 2500 Series Specifications cont’d Sold by laptopia2005 do not Resell AC 100V to 240V, 47/63Hz, 36W Max CD-ROM Following table lists the NEC Versa 2500 Series product mix Product MIXProduct Mix VersaSystem Board Specifications Following table lists system board specificationsMain Board Specifications Converter Board Specifications Transfer Board SpecificationsFollowing table lists Transfer board specifications Following table lists Converter board specificationsLED Indicator Board Specifications Following table lists LED indicator board specificationsLED Indicator Board Specifications Board Specifications Following table lists I/O board specificationsI/O Board Specifications I/O Board Specifications cont’d Following table lists LCD inverter board specifications LCD Inverter Board SpecificationsLCD Inverter Board Specifications SpecificationDiskette Drive Specifications LED Status Indicators10 Diskette Drive Specifications Status LED DescriptionsCD-ROM Specifications HDD Unit SpecificationsNimh Battery Pack Specifications Following table lists the standard battery specificationsDC/DC Converter & Battery Charger Specifications Battery Charger SpecificationsFollowing table lists battery charger specifications AC/DC Adapter Specifications Keyboard SpecificationsFollowing table lists keyboard specifications Following table lists AC/DC adapter specificationsBios Specifications Following table lists Bios specifications18 Bios Specifications 18 Bios Specifications cont’d Following table lists Micro-Controller specifications19 Micro-Controller Specifications MICRO-CONTROLLER Function DescriptionFollowing table lists power management specifications Power Management Features Mode Definition20 Power Management Modes Mode Device SpeedPower Management Features Mode Transition Following table lists power management transition modes21 Mode Definitions Following table lists appropriate operating temperatures Environmental SpecificationsHOT KEY Definition Following table lists hot key definitionsPower Source Specifications Vibration SpecificationsShock Specifications ELECTRO-STATIC Discharge ESD Specifications Following table lists static discharge specifications27 Electro-Static Discharge Specifications Hardware Functional Overview System Bios Functional Block DiagramMajor Functional Blocks System ProcessorSystem Logic Controller Sold by laptopia2005 do not Resell Dram Memory Memory SubsystemROM Memory SubsystemVideo Chipset Controller Video SubsystemKeyboard Subsystem External VGA CapabilityHard Disk Subsystem Pcmcia Controller and SocketsAC Power Adapter Power SubsystemDiskette Drive Subsystem Poin ING Device SubsystemInternal Battery Pack Power BoardLCD Inverter Board Assembly Cleaning the Notebook’s Exterior Preventive MaintenanceCleaning the Notebook’s Interior Handling the Computer Battery PacksProtecting the Disk Drives Required Tools and Equipment Maintaining the LCD QualityRemoving/Replacing the Notebook Battery Pack Parts Removal and Replacement ProceduresRemoving/Replacing the Diskette Drive Module Removing/Replacing the Hard Disk Drive ModuleRemoving/Replacing the LCD Status Bar Cover and Hinges Diskette Drive Module AssemblyRemoving/Replacing the Keyboard Removing/Replacing the Heat PlateRemoving/Replacing the CPU Removing/Replacing the Cover-Display LCD Assembly Module Removing/Replacing the LED Board Removing/Replacing the System Board and I/O Board LED Board Module AssemblySystem Board and I/O Boards Separating the System Board and I/O BoardI/O Board Module Assembly Removing/Replacing the Power BoardIllustrated Parts Breakdown NEC Versa 2500 Series Field-Replaceable PartsDescription Part Number Not shown in IPB figure NEC Versa 2500 Series Field-Replaceable Parts cont’dNEC Versa 2500 Series Illustrated Parts Breakdown Packaging and Documentation Part Numbers Packaging and DocumentationNEC Service and Information Telephone Numbers Service InformationService Call Technical SupportOrdering Information from FastFacts Product InformationHelpful Starters Post Error Messages POWER-ON Self Test PostPost Messages Message Possible Cause ActionSetup Post Error Messages cont’dValue , read hex-value Informational Messages Bios Informational MessagesFollowing table lists run-time error messages Run-time Error MessagesRun-time Error Messages Message Cause ActionQuick Troubleshooting Quick TroubleshootingProblem Corrective Actions Quick Troubleshooting cont’d Sold by laptopia2005 do not Resell Table A-1 VGA Standard Modes Text Mode VGA Standard ModesFollowing table lists VGA standard modes Table A-2 VGA Standard Modes Graphics Mode Table A-3 VGA Standard Modes Planar ModeTable A-4 VGA Standard Modes Packed Pixel Mode Table A-6 VGA Extended Modes 4-Bit Linear Mode Table A-5 VGA Extended Modes Text ModeTable A-7 VGA Extended Modes 8-Bit Linear Mode Table A-8 VGA Extended Modes 15-Bit Linear ModeTable A-10 VGA Extended Modes 24-Bit Linear Mode Table A-11 VGA Extended Modes Planar ModeTable A-12 VGA Extended Modes Packed Pixel Mode Table A-14 VGA High Refresh Modes Planar Mode Table A-13 VGA High Refresh Modes Packed Pixel ModeTable A-15 VGA High Refresh Modes Packed Pixel 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.