NEC NEC Computer Systems Division, Packard Bell NEC, Inc warranty System Board and I/O Boards

Page 79

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Field Service Guidelines 4-11

Figure 4-4 The System Board and I/O Boards

Separating the System Board and I/O Board

The system board is attached directly to the I/O board. The following procedure should be taken to separate the two boards:

1.Turn off the computer. Follow all disassembly procedures mentioned from the start of this section.

2.Remove the four medium spacers located along the top and left side edge and the one screw located at the center bottom of the system board.

3.Slowly separate the I/O Board and system board, being cautious about the con- nectors coupling the two boards together.

4.To reattach the I/O Board and system board, reverse the separation procedures mentioned above.

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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 Error checking and correction Bios Customized UtilityBios Upgrade Utility Direct memory accessPhase lock loop Service registerNational Authorized Service National Service ResponseVdc Volts, direct current Universal asynchronousReceiver/transmitter VoltConfiguration NEC Versa Model ConfigurationIntel P54CSLM-133 Feature Highlights Feature HighlightsSystem Configuration Diagram System ConfigurationMain Components Power Switch/LCD Cover SwitchStatus Panel and Power Indicator Quick Tour of the NotebookNormal keyboard operation Disables the alphanumeric keys where the embedAgain to disable the embedded keys and resume Ded keys are located. Press the Num Lock keyVersaGlide Fn Key Combination Summary cont’dPC Card Slot Compartment Right Side of the NotebookMemory Slot Compartment Built-in Disk DriveFront 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’dPassword on Re Boot Setup Security MenuFunction Password Password on BootPower Saving Boot Setup Power Savings MenuStandby Time-out 16 MB Memory Configurations System UpgradesMemory Upgrade Procedure Boot Setup Power Savings Menu cont’dSystem 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 Versa Product MIXFollowing table lists the NEC Versa 2500 Series product mix Product MixFollowing table lists system board specifications System Board SpecificationsMain Board Specifications Following table lists Converter board specifications Transfer Board SpecificationsConverter Board Specifications Following table lists Transfer 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 Specification LCD Inverter Board SpecificationsFollowing table lists LCD inverter board specifications LCD Inverter Board SpecificationsStatus LED Descriptions LED Status IndicatorsDiskette Drive Specifications 10 Diskette Drive SpecificationsFollowing table lists the standard battery specifications HDD Unit SpecificationsCD-ROM Specifications Nimh Battery Pack SpecificationsBattery Charger Specifications DC/DC Converter & Battery Charger SpecificationsFollowing table lists battery charger specifications Following table lists AC/DC adapter specifications Keyboard SpecificationsAC/DC Adapter Specifications Following table lists keyboard specificationsFollowing table lists Bios specifications Bios Specifications18 Bios Specifications MICRO-CONTROLLER Function Description Following table lists Micro-Controller specifications18 Bios Specifications cont’d 19 Micro-Controller SpecificationsMode Device Speed Power Management Features Mode DefinitionFollowing table lists power management specifications 20 Power Management ModesFollowing table lists power management transition modes Power Management Features Mode Transition21 Mode Definitions Following table lists hot key definitions Environmental SpecificationsFollowing table lists appropriate operating temperatures HOT KEY DefinitionVibration Specifications Power Source SpecificationsShock Specifications Following table lists static discharge specifications ELECTRO-STATIC Discharge ESD 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 Subsystem Memory SubsystemDram Memory ROM MemoryVideo Chipset Controller Video SubsystemKeyboard Subsystem External VGA CapabilityHard Disk Subsystem Pcmcia Controller and SocketsPoin ING Device Subsystem Power SubsystemAC Power Adapter Diskette Drive SubsystemPower Board Internal Battery PackLCD Inverter Board Assembly Cleaning the Notebook’s Exterior Preventive MaintenanceHandling the Computer Battery Packs Cleaning the Notebook’s InteriorProtecting 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 Heat Plate Removing/Replacing the KeyboardRemoving/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 BoardNEC Versa 2500 Series Field-Replaceable Parts Illustrated Parts BreakdownDescription 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 DocumentationTechnical Support Service InformationNEC Service and Information Telephone Numbers Service CallOrdering Information from FastFacts Product InformationHelpful Starters Message Possible Cause Action POWER-ON Self Test PostPost Error Messages Post MessagesSetup Post Error Messages cont’dValue , read hex-value Informational Messages Bios Informational MessagesMessage Cause Action Run-time Error MessagesFollowing table lists run-time error messages Run-time Error MessagesQuick 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-8 VGA Extended Modes 15-Bit Linear Mode Table A-5 VGA Extended Modes Text ModeTable A-6 VGA Extended Modes 4-Bit Linear Mode Table A-7 VGA Extended Modes 8-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 VGA High Refresh Modes Table A-13 VGA High Refresh Modes Packed Pixel ModeTable A-14 VGA High Refresh Modes Planar Mode Table A-15 VGA High Refresh Modes Packed Pixel ModeBattery Replacement Index Memory Index-3