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NEC Versa Note VX Series, Service And Reference Manual

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NEC Versa Note VX Series Service And Reference Manual Download Page 69

Troubleshooting   5  

Helpful Questions

Here are some helpful questions to ask when troubleshooting the notebook:

n

 

Is there any external power source connected to the computer?

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Is the battery fully charged?

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Is the computer turned on and the Power LED activated?

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Is the LCD display switched to the external monitor?

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Are all cables and devices connected properly and securely?

n

 

Are all needed device drivers installed properly?

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Is the Suspend Mode activated? Press any key or press the Power/Sleep button to
power on the system.

Summary of Contents for Versa Note VX Series

Page 1: ...NEC Versa Note VX Series Notebook Computers VE R S A NO T E VX S E R V I C E A N D R E F E R E N C E M A N U A L ...

Page 2: ...the hardware and interface components Chapter 2 System Configuration and Setup provides information on setup and how to operate the notebook Chapter 3 Disassembly and Reassembly provides detailed instructions on how to disassembly the notebook Chapter 4 System Board Layout shows the system boards and the board connectors Chapter 5 Preventive Maintenance lists general notebook preventive maintenanc...

Page 3: ...bit DMA direct memory access DMAC DMA controller DOS disk operating system DRAM dynamic RAM DVD digital video disk ECC error checking and correction ECP enhanced capabilities port EDO extended data output EGA Enhanced Graphics Adapter EPP enhanced parallel port EPROM erasable and programmable ROM EVGA Enhanced Video Graphics Array F Fahrenheit FAX facsimile transmission FCC Federal Communications ...

Page 4: ...PPI programmable peripheral interface PROM programmable ROM QFP quad flat pack RAM random access memory RAMDAC RAM digital to analogue converter RAS row address strobe RGB red green blue RGBI red green blue intensity ROM read only memory rpm revolutions per minute R read RTC real time clock R W read write S slave SCSI Small Computer System Interface SDRAM synchronous dynamic random access memory S...

Page 5: ...o Know the Versa Note VX n Around the Front of the System n Around the Back of the System n Around the Left Side of the System n Around the Right Side of the System n Around the Bottom of the System n Internal Components n Chipset ...

Page 6: ...nt Interconnect PCI architecture In addition your system provides a high performance hard disk drive diskette drive and PC card support Most models are equipped with a 24X CD ROM drive or a DVD ROM drive and a V 90 compliant 56 kilobits per second Kbps modem As a multimedia system your Versa Note VX provides the tools needed to create and present impressive images using video clips and sound Versa...

Page 7: ... when the panel is closed Power and Battery Charging LEDs A Power LED B Battery Charging LED Power LED lets you know that power to the system is turned on This LED is positioned so that you see the power state whether the LCD panel is opened or closed Lights green when the system is powered on using the AC adapter battery or auto adapter Lights green when on and has normal battery power Lights yel...

Page 8: ...status Descriptions of the status icons appear in the following section n Email Button press to access your email software n Internet Button press to access the Internet n Power Button press the Power button either to power on or power off the system Note If you are unable to power off the system use the power override Press the Power button and hold it in place until the system powers off Status ...

Page 9: ...tte drive n Caps Lock lights when caps lock is in effect n Scroll Lock lights when scroll lock is in effect n Num Lock lights when Num Lock mode is active Keyboard Panel and Base Unit The Versa Note VX keyboard panel and base unit contain the following features The keyboard panel and base unit features are described after the figure Keyboard panel A Keyboard B VersaGlide Base unit A Speakers D Aud...

Page 10: ...nu Key n Function Keys Twelve function keys F1 through F12 are available on the Versa Note VX keyboard These keys work together with the Fn key to activate special functions Eight keys printed in blue are pre programmed with dual functions Function keys are application driven See the specific application s user guide for information about how each function key works within the application you are ...

Page 11: ...rking environment to a reserved area on the hard drive Fn ESC Initiates a Save to Ram only in Windows 95 when the BIOS System Switch is set to Sleep Saves your working environment to memory Windows keys Use the following two keys to facilitate your work Shortcut Application key provides quick access to shortcut menus This key acts like a right mouse button Floating Window key displays the Start me...

Page 12: ...e Allows you to connect an external microphone for monophonic recording or amplification through the unit Plugging in an external microphone disables the built in microphone Line In Lets you use another audio system like a home stereo as an input source Use a cable to connect to the Line Out port on the other audio system to record or play Headphones Lets you plug in stereo headphones or powered s...

Page 13: ...other serial device n USB Ports Each Universal Serial Bus USB port allows you to connect up to 127 USB equipped peripheral devices for example printers monitors scanners to your Versa Note VX n Modem LAN Port NEC includes a 56K fax data modem or mini PCI LAN Around the Left Side of the System The left side of your Versa Note VX provides the features shown in the following figure The left side feat...

Page 14: ...t block the fan while the Versa Note VX is in use n PC Card Slots Two PC card slots allow you to insert two Type II PC cards or one Type III PC card in the bottom slot Card BUS cards are supported and Zoom Video is supported in the top slot n TV Out Allows you to connect to a television Around the Bottom of the System The bottom of the Versa Note VX offers the following features The features are d...

Page 15: ...Diskette Drive The Versa Note VX ships with a 3 5 inch 1 44 MB diskette drive CD ROM DVD ROM Drive A 24X CD ROM drive or a DVD ROM drive comes installed in the Versa Note VX system Hard Disk Drive A standard 2 5 inch 9 5 mm hard disk drive ships with the system CMOS Battery This lithium battery 3 Volts 30 mAH capacity provides battery backup and prevents data loss in the system s complementary met...

Page 16: ...1 12 System Overview YMF752 S Yamaha Audio M38813E4 Mitsubishi Keyboard Controller TIPCI1225 Texas Instruments PCI CardBus Controller ...

Page 17: ...2 System Configuration and Setup n Power Sources for Your Versa Note VX n BIOS Setup n Updating the BIOS n NEC Utilities n Application and Driver CD ...

Page 18: ... information about using the NEC power sources Using the AC Adapter Use the AC adapter and power cable that came with your Versa Note VX to run your computer on alternating current AC power or to recharge the battery pack Use the AC adapter whenever a wall outlet is nearby Keep the adapter connected whenever possible The AC adapter charges the battery when it is connected whether the Versa is powe...

Page 19: ...and Off To power on locate the Power button on the right hand side of the control panel above the keyboard and press it To power off the system press the Power button In Windows the computer automatically shuts down when Shut Down is selected from the Start menu That is you do not need to press the Power button to switch off the computer Using the Battery The Versa Note VX system comes with a rech...

Page 20: ...g Battery Life The Versa Note VX Li Ion battery life is effected by the following conditions n When it is new and fully charged n When no peripherals are connected to your Versa Note VX n When you have no options installed Enabling power management features increases battery life While on the road it is important to be aware of the simple things you can do to extend the life of the system s main b...

Page 21: ...computer for which they are designed Installing another manufacturer s battery or using a combination of very old and new batteries can deteriorate battery and equipment performance 1 Save your files exit Windows and put your system into Suspend mode or turn off system power 2 Close the LCD panel and turn over the system 3 Remove the battery as follows n Locate the battery release latch n Slide th...

Page 22: ...he system is off or in Suspend mode and the AC adapter is connected charge time is approximately 3 hours n When the system is powered on and the AC adapter is connected charge time is approximately 4 hours For maximum battery performance fully discharge the battery before recharging it To do so unplug the AC adapter turn off power management features through BIOS Setup and Windows power management...

Page 23: ...ater n Keep metal objects away from battery terminals Metal objects in contact with the terminals can cause a short circuit and damage If the battery leaks n If the battery leaks onto skin or clothing wash the area immediately with clean water Battery fluid can cause a skin rash and damage fabric n If battery fluid gets into eyes DO NOT rub rinse with clear water immediately and consult a doctor n...

Page 24: ...secure your system with a password n balance your performance needs with power conservation Access the BIOS utility at power on Just press F2 when the following prompt appears Press F2 to enter Setup When you press F2 to enter BIOS Setup the system interrupts the Power On Self Test POST and displays the current CMOS RAM settings If the system detects an error during POST it prompts you with a doub...

Page 25: ...eys that move the cursor and select parameters Options that are greyed out are not available for the current selection Using Keys The following table lists the BIOS Setup keys and their functions BIOS Setup Key Functions Key Function Moves the cursor between the displayed parameters PgUp PgDn Toggles through the current parameter settings Tab For some parameter settings moves the cursor between th...

Page 26: ... arrow keys to select Yes and press Enter Standard CMOS Setup Use the Standard CMOS Setup screen to view the System Time System Date and to modify drive parameters and related settings Standard CMOS Setup Parameter Default Setting Alternate Setting s Date mm dd yyyy System Memory automatically detected Time hh mm ss Diskette Drive A 1 44 MB 3 1 2 Not installed 1 44 MB 3 1 2 Internal Auto User Defi...

Page 27: ...to avoid infection by some virus types Advanced CMOS Setup Use the Advanced CMOS Setup to set the following functions Advanced CMOS Setup Parameter Default Setting Alternate Setting s Video Out Type NTSC PAL LCD Panel View Expansion On Off PS 2 Port Warm Swap Enabled Disabled Internal Mouse Enabled Disabled n Video Out Type Specifies the signal type used by the video device connected to the TV Out...

Page 28: ...sign a password to allow or restrict access to the hard disk drive contents n Internal HDD Password Enables or disables the HDD password Password Protection Your Versa Note VX supports a password for system security on several levels Your system is not protected until you set a user password Keep in mind that you must set the supervisor password before the BIOS Setup utility allows you to set a us...

Page 29: ... BIOS setup highlight and select the System Security Setup 2 Highlight Assign HDD Password and press Enter The system prompts you to enter a master password 3 Enter a master HDD password and press Enter The system prompts you to enter the password again to verify 4 Enter the master password and press Enter The system confirms the creation of the master password and prompts you to enter a user pass...

Page 30: ...if there are provisions for establishing HDD passwords Power Management Setup Use the Power Management Setup to balance high performance and energy conservation Power Management Setup Parameter Default Setting Alternate Setting s System Switch Power Button Sleep Button Power Management under AC Off On Power Savings Level Longest Life High Perform Custom Off CPU Speed Control 100 12 5 25 50 Hard Di...

Page 31: ...meouts Custom Timeout Options Option Definition CPU Speed Control Sets CPU performance at one of four levels Hard Disk Timeout Sets the time delay before your hard disk powers down Video Timeout Sets whether to timeout the video or not Peripheral Timeout Sets whether to timeout the peripheral or not Audio Device Timeout Sets the time delay before your audio device powers off Standby Timeout Select...

Page 32: ...bled 1st Fnd IDE CDROM 3rd Boot Device1 1st Fnd IDE Disabled Floppy CD DVD 4th Boot Device 1 Disabled Floppy CD DVD 1 st Fnd IDE Try Other Boot Devices Yes No 1 Bootable device when set to IDE hard drive Only one IDE device is bootable n Quick Boot Specifies whether or not the system performs all tests during system boot n Silent Boot Specifies whether or not to display the NEC logo during the sys...

Page 33: ...nal sound n Internal Hard Drive Enables or disables the internal hard drive n Serial Port Disables the port or changes its address assignment n Parallel Port Parallel Mode Disables or reassigns the parallel port and select a parallel port mode n IR Serial Port Enables disables or reassigns the IR serial port Other BIOS Setup Options BIOS Setup offers other options including the following n Change ...

Page 34: ...ware and hardware features Use the BIOS Update Diskette for your specific model only to update your Versa Note VX system BIOS Note You only need to update the BIOS if significant improvements or fixes to the current system BIOS have been made Your authorized dealer or service representative can help you determine this To update the system BIOS you must n Obtain the BIOS Update n Prepare the BIOS U...

Page 35: ...ally loads the utility A message similar to the following appears The NEC BIOS Update Utility should not be used to modify the BIOS in a Versa Note VX system which is docked If your Versa Note VX is docked please exit the BIOS Update Utility power down and undock your Versa Note VX before running the utility Plug in your AC cable before restarting the flash utility 3 Press Enter to continue The ut...

Page 36: ...3 Disassembly and Reassembly n Required Tools and Equipment n Disassembly n Reassembly ...

Page 37: ...ve a user removable hard drive Follow the instructions carefully to properly disassemble the systems When disassembling the system unit follow these general rules n Turn off the system and disconnect all power and all options including the AC adapter if connected and battery pack see the procedures that follow n Do not disassemble the system into parts that are smaller than those specified in the ...

Page 38: ...ou slide the battery out of the system Removing the battery A Battery Release Latch Memory Module and Switch Settings Use the following steps to remove the memory module and access the switch settings 1 Power off the system and disconnect any peripheral devices 2 Turn the system over and locate the screw on the memory bay Memory bay cover and screw A Memory Bay Cover B Screw 3 Remove the screw and...

Page 39: ... CD ROM drive The following list identifies each switch setting and its function n Switch 1 Password override The default setting is OFF If you forget your password and cannot access the data on your Versa change the setting to ON and your current password is erased n Switch 2 Keyboard select Default is ON for U S 85 key keyboard n Switch 3 Reserved for factory use Default is OFF n Switch 4 Keyboa...

Page 40: ...hard disk drive follow these steps 1 Locate the drive access panel on the left side of the system Open the panel using the notch Opening the panel A Drive Access Panel B Notch 2 Remove the screw that secures the hard disk in the system Removing the screw A Screw ...

Page 41: ...he system Removing the disk drive LED Button Assembly Follow these steps to remove the LED Button assembly 1 Open the LCD panel 2 Locate the LCD hinge covers Locate and remove the screw caps and screws on the hinge covers Removing the screw caps and screws A Screw Cap ...

Page 42: ...ve Removing the hinge covers A Hinge Cover 4 Lift the LED button assembly away from the system Removing the LED button assembly A LED Button Assembly LCD Panel Use the following steps to remove the LCD panel 1 Remove the LED button assembly from the system 2 Close the LCD panel and turn the system over ...

Page 43: ...y 3 Locate and remove the two bottom screws securing the LCD panel to the system Removing the screws A Screws 4 Turn the system over and open the LCD panel 5 Locate and remove the two hinge screws Removing the hinge screws A Screw ...

Page 44: ...he LCD panel screws A Screws 7 Pull the LCD panel up and away from the system Keyboard and Heat Plate Follow these steps to remove the keyboard and heat plate 1 Remove the LCD panel from the system 2 Partially lift the keyboard up and toward the back of the system to clear the tabs from under the top cover Lifting the keyboard ...

Page 45: ...ews Loosening the heat plate screws A Screws B Heat Plate 5 Partially lift the heat plate Disconnect the fan cable from connector P5 of the main board and remove the heat plate 6 Disconnect the keyboard cable from connector P5 of the I O board and remove the keyboard Top Cover Use the following steps to remove the top cover 1 Remove the LCD panel keyboard and heat plate from the system 2 Turn the ...

Page 46: ... screws on the bottom that secure the top cover to the system Removing the bottom screws A Screws 4 Turn the system over 5 Locate and remove the one screw inside the hard disk drive bay that secures the top cover Removing the drive bay screw A Screw ...

Page 47: ...e top screw A Screw 7 Partially lift the top cover Disconnect the VersaGlide cable from connector P8 on the I O board Remove the top cover Removing the top cover A VersaGlide Cable VersaGlide Follow these steps to remove the VersaGlide assembly 1 Remove the LCD panel keyboard heat plate and top cover from the system ...

Page 48: ...rews 3 Slide the VersaGlide assembly away from the top cover tabs and remove the VersaGlide from the top cover CD ROM Drive Use the following steps to remove the CD ROM drive 1 Remove the LCD panel keyboard heat plate and top cover from the system 2 Slide the CD ROM drive out of the system and away from the connector on the main board Removing the CD ROM drive A CD ROM Drive ...

Page 49: ... LCD panel keyboard heat plate and top cover from the system 2 Carefully disconnect the audio board from connector P7 on the main board by lifting the audio board Disconnecting the audio board A Audio Board 3 Disconnect the cables from connectors P1 and P2 on the audio board and remove the audio board ...

Page 50: ...ps to remove the DC DC board 1 Remove the LCD panel keyboard heat plate and top cover from the system 2 Carefully disconnect and remove the DC DC board from connectors P9 and P10 on the main board by lifting the DC DC board Disconnecting the DC DC board A DC DC Board ...

Page 51: ...late top cover and audio board from the system 2 Disconnect the diskette drive cable from connector P6 on the I O board 3 Disconnect the CMOS battery from P1 of the I O board 4 Carefully disconnect and remove the I O board from connector P12 on the main board by lifting the I O board Disconnecting the I O board A I O Board ...

Page 52: ...the CMOS battery from the front of the base assembly It is secured with two sided tape Removing the CMOS battery A CMOS Battery Microphone Follow these steps to remove the microphone 1 Remove the LCD panel keyboard heat plate top cover audio board and I O board from the system 2 Remove the microphone assembly from the front of the base assembly Removing the microphone assembly A Microphone Assembl...

Page 53: ...op cover audio board and I O board from the system 2 Locate and remove the two screws securing the diskette drive to the base assembly Removing the diskette drive screws A Screws B Diskette Drive 3 Lift the diskette drive out of the base assembly Slightly tilt the drive front side down to slide the drive release button out of the base assembly ...

Page 54: ... of the base assembly There are two speakers Removing the speaker A Speaker Kensington Lock Latch Use the following steps to remove the Kensington lock latch 1 Remove the LCD panel keyboard heat plate and top cover from the system 2 Locate and remove the two screws securing the lock latch to the main board Removing the lock latch screws A Screws B Lock Latch 3 Lift the Kensington lock latch out of...

Page 55: ...screws that secure the main board to the base assembly Use the needle nose pliers to remove the three hex screws Removing the main board screws A Hex Screws C Main Board B Screw 3 Lift the main board out of the base assembly Celeron Pentium II Removal Follow these steps to remove the Celeron Pentium II CPU 1 Remove the LCD panel keyboard heat plate top cover audio board I O board diskette drive Ke...

Page 56: ...o of the CPU stand offs Removing the CPU stand offs A Stand offs 3 Locate pin 1 on the CPU identified by the triangle Align and place the actuation block of the insertion extraction tool over pin 1 and the pin diagonally opposite pin 1 Placing the actuation block A Pin 1 ...

Page 57: ... the sides Do not touch the top of the die Pentium III Removal Follow these steps to remove the Pentium III CPU 1 Remove the LCD panel keyboard heat plate top cover audio board I O board diskette drive Kensington lock latch and main board from the system 2 Locate the CPU Locate the locking screw just below the CPU Using a flat head screwdriver turn the locking screw counter clockwise to unlock the...

Page 58: ... main board from the system 2 Turn the main board over 3 Remove both memory modules if present 4 Locate and remove the four screws that secure the PC card assembly to the main board Removing the PC card screws A Screws B Main Board back 5 Disconnect the PC card assembly from connector P2 on the main board and remove the assembly Reassembly Reassembly is the reverse of the disassembly process Use c...

Page 59: ...4 System Board Layout n Audio Board n DC DC Board n I O Board n Main Board ...

Page 60: ...ystem Board Layout This following figures show the system boards and connector locations Audio Board A Connector P2 back side C Connector P5 B Connector P1 back side DC DC Board A Connector P1 B Connector P2 ...

Page 61: ... D Connector P2 B Connector P3 back side E Connector P1 C Connector P6 F Connector P8 Main Board A Connector P17 F Connector P5 B Connector P15 G Connector P4 C Connector P10 H Connector P7 D Connector P8 I Connector P9 E Connector P2 J Connector P12 ...

Page 62: ...5 Preventive Maintenance n Cleaning the Notebook Exterior n Cleaning the Notebook Interior n Protecting the Disk Drive n Handling the Battery Pack n Maintaining the LCD Quality ...

Page 63: ...hen servicing the inside of the notebook remove dust and other foreign particles from inside the system unit as follows 1 Remove the top cover and keyboard using the disassembly procedures discussed in the section Disassembly and Reassembly in Chapter 3 2 Dust or vacuum with a rubber tipped nozzle the inside of the system particularly the main board surface Use care to avoid damaging or dislodging...

Page 64: ...shock and vibration n Do not expose the battery pack to direct sunlight moisture chemical compounds or extreme heat n Do not disassemble the battery pack n Do not use the battery pack to power other devices n Do not short the battery leads or connect the battery with reversed polarity n Never attempt to charge the battery pack in any way other than as described in this manual and the user s guide ...

Page 65: ...6 Troubleshooting n Quick Troubleshooting n Helpful Questions ...

Page 66: ...e installed VGA driver is correct and resolution is set according to the LCD size and type Check if the LCD panel is connected properly Replace the main board LCD screen does not show display Check if the power saving mode is activated Press any key or press the Power button to resume operation and display Check if the display output is switched to the external monitor Check if there is power Chec...

Page 67: ...o the other slot Replace the memory module Replace the main board External keyboard or PS 2 mouse does not work Check if the keyboard or mouse is connected properly Check if the PS 2 Y cable is being used Power off the system first before plugging in the device Check if the PS 2 mouse driver is installed properly Replace the keyboard or mouse Replace the main board PC card does not work Check if t...

Page 68: ...enabled in BIOS Setup Check if File Sharing and the Computer name are both set properly Check if the Infrared Monitor is activated Check if the IR ports on both systems are blocked or obstructed Check the I O controller chip for any cold or loose soldering Replace the main board USB Port does not work Check if the USB controller in BIOS Setup is enabled Check the USB device connection Unplug and r...

Page 69: ... computer n Is the battery fully charged n Is the computer turned on and the Power LED activated n Is the LCD display switched to the external monitor n Are all cables and devices connected properly and securely n Are all needed device drivers installed properly n Is the Suspend Mode activated Press any key or press the Power Sleep button to power on the system ...

Page 70: ...7 Specifications n System Components n Connector Locations n Memory Map n Interrupt Controllers ...

Page 71: ... and Pentium III Read Only Memory ROM 512 KB flash ROM with boot block Calendar Clock Year month day hour minute second maintained by internal back up battery Input Output I O Facilities Integrated industry standard interfaces n Modem Port 1 port RJ 11 jack or LAN Port on some models n TV Out 1 port 2 pin RCA jack NTSC PAL support n DC In 1 port for AC adapter cable n PS 2 Port 1 port PS 2 6 pin M...

Page 72: ... Super VGA colour 13 3 14 1 inch Thin Film Transistor TFT Extended Graphics Array XGA colour n Resolution 800 x 600 pixels for SVGA 1024 x 768 pixels for XGA Keyboard Membrane type with standard QWERTY key layout International keyboards are country specific n Function keys 12 keys n CD Control keys or Personal Code keys n Internet and Email keys n Cursor Control keys 8 keys arrow keys arranged in ...

Page 73: ...mpliant n Enhanced AT command set n Class 1 and 2 Fax protocols n Built in speaker with software controllable volume Mini PCI LAN n 10Base T and 100Base TX n Resume on LAN support n Full duplex support n Auto sensing n Software support for management server Mini PCI Modem LAN Modem n K56 Flex compatible n V 34 protocol n V 90 compliant n Class 1 Fax protocol LAN n 10 100 Ethernet n Full duplex sup...

Page 74: ...mm Weight n 6 6 lbs 3 0 kg 12 1 inch LCD n 6 8 lbs 3 1 kg 13 3 inch LCD n 7 0 lbs 3 2 kg 14 1 inch LCD Recommended Environment Operation n Temperature 5ºC to 35ºC 41ºF to 95ºF n Relative Humidity 20 to 80 Noncondensing Storage n Temperature 20ºC to 40ºC 4ºF to 104ºF n Relative Humidity 20 to 80 Noncondensing ...

Page 75: ... table shows the system s connector locations Connector Locations Connector Location P1 Audio Board P2 Audio Board P1 I O Board P5 I O Board P6 I O Board P8 I O Board P2 Main Board P5 Main Board P7 Main Board P9 Main Board P10 Main Board P12 Main Board ...

Page 76: ...te protection The following table shows the system s memory map System Memory Map Memory Space Size Function 00000000h 0009FFFFh 640 KB System Memory 000A0000h 000BFFFFh 128 KB Video Memory 000C0000h 000DFFFFh 128 KB 000E0000h 000FFFFFh 128 KB System and Video BIOS 01000000h 01FFFFFFh 32 MB Extended Memory 02000000h 03FFFFFFh 32 MB Extended Memory 04000000h 0FFFFFFFh Up to 256 MB Extended Memory ...

Page 77: ...ugh 15 Interrupts IRQ Device IRQ00 Internal Timer IRQ01 Keyboard IRQ02 Cascade IRQ03 IR IRQ04 Serial Port IRQ05 CardBus Mini PCI Sound IRQ06 Diskette Drive IRQ07 Parallel Port IRQ08 Real time Clock IRQ09 USB IRQ10 Video IRQ11 Available IRQ12 Mouse IRQ13 Coprocessor IRQ14 Hard Disk Controller IRQ15 Available ...

Page 78: ...ut Output System A collection of primitive computer routines usually burnt into ROM that controls the real time clock keyboard disk drives video display and other peripheral devices bit Binary digit The smallest unit of computer data bits per second bps A unit of transmission Also called baud rate board Printed circuit board Board onto which computer components are soldered and thin wires are prin...

Page 79: ...en image using tiny dots called pixels See also LCD cursor A movable image on the display screen that indicates where the next entered data appears D diskette A thin flexible platter coated with a magnetic material for storing information diskette drive A magnetic drive that writes on and retrieves data from a diskette DSTN Double Scan Super Twisted Nematic A type of technology used in some NEC Ve...

Page 80: ...t Drive Electronics A hard disk drive type that has controller electronics built into the drive and delivers high throughput interface A connection that enables two devices to communicate interrupt A special control signal from an I O device that diverts the attention of the microprocessor from the program to a special address K kilobyte KB 1024 bytes L LAN Local Area Network LCD Liquid Crystal Di...

Page 81: ...line N nonvolatile memory Storage media that retains its data when system power is turned off Nonvolatile memory in the NEC Versa is a complementary metal oxide semiconductor CMOS chip which is backed up by an internal battery The backup battery preserves the clock calendar data and system configuration parameters stored in CMOS See volatile memory O operating system Set of programs that manage th...

Page 82: ...ed into the port to attach the device to the computer processor In a computer a functional unit that interprets and executes instructions prompt A special symbol indicating the beginning of an input line Also a message that appears on the screen indicating that the user must take a certain action Q QWERTY The QWERTY keyboard designed in the 1800s for mechanical typewriters refers to the first six ...

Page 83: ...ution of 1024x 768 with up to 256 colours displayed simultaneously system board The main printed circuit board inside the system unit into which other boards and major chip components such as the system microprocessor are connected T TFT Thin Film Transistor A type of NEC Versa LCD colour screen that supports 256 colours and provides exceptional screen display V VersaGlide A small touch sensitive ...

Page 84: ...omputer without turning off the power through keyboard input pressing Ctrl Alt and Del keys simultaneously or the reset button The system returns to an initial or arbitrarily selected condition write To record or store information to a storage device ...

Page 85: ...ys 1 7 D DC DC board removing 3 15 Dip switch settings 3 4 diskette drive removing 3 18 Diskette drive 1 12 2 11 specifications 9 4 E Entering BIOS setup 2 8 Establishing passwords 2 12 F Function key combinations 1 7 Function Keys 1 6 H Handling battery pack 6 3 Hard disk removing 3 5 Hard disk drive 1 12 moving 2 14 specifications 9 4 HDD password 2 12 HDPREPEZ utility using in Windows 98 95 2 2...

Page 86: ...oving audio board 3 14 Celeron Pentium II 3 20 hard disk 3 5 I O board 3 16 keyboard and heat plate 3 9 LED Button assembly 3 6 main board 3 20 microphone 3 17 PC card assembly 3 23 Pentium III 3 22 speakers 3 19 VersaGlide 3 12 Replacing the battery pack 2 5 3 2 S Serial port 2 17 Services and Support contact information 8 2 Servicing the system required tools 3 2 Setting boot devices 2 16 Superv...

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