NEC Versa 2500 Series Service Manual Download

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Contents

Preface.........................................................................................................................

Abbreviations...............................................................................................................

xiii

Section 1 Introduction

Feature Highlights........................................................................................................ 1-2

System Configuration................................................................................................... 1-3

Quick Tour of the Notebook........................................................................................1-4

Main Components................................................................................................. 1-4

Color LCD Display Panel ............................................................................... 1-4

Power Switch/LCD Cover Switch ..................................................................1-4

Status Panel and Power Indicator ................................................................... 1-4

Keyboard ....................................................................................................... 1-5

VersaGlide..................................................................................................... 1-6

Memory Slot Compartment............................................................................ 1-7

The Right Side of the Notebook............................................................................ 1-7

Built-In Disk Drive......................................................................................... 1-7

PC Card Slot Compartment............................................................................ 1-7

Hard Disk Drive Compartment.......................................................................1-8

Front of the Notebook ..........................................................................................1-8

Battery Compartment..................................................................................... 1-8

Left Side of the Notebook..................................................................................... 1-9

DC-IN Connector Jack................................................................................... 1-9

Hardware Reset Switch.................................................................................. 1-10

The Rear of the Notebook..................................................................................... 1-10

External Keyboard and PS/2 Mouse Port ....................................................... 1-10

VGA Port ...................................................................................................... 1-11

Printer Port .................................................................................................... 1-12

Serial Port (COM1)........................................................................................ 1-12

Bottom of the Notebook ....................................................................................... 1-12

Battery Module Handle and Lock...................................................................1-13

ROM Memory Compartment Cover ............................................................... 1-13

System BIOS Setup Program ....................................................................................... 1-14

The Boot Setup Menu..................................................................................................1-14

System Upgrades .........................................................................................................1-19

Memory Upgrade Procedure ........................................................................................1-19

Summary of Contents for Versa 2500 Series

Page 1: ... the Warranty Statement accompanying each product However actual performance of each such product is dependent upon factors such as system configuration customer data and operator control Since implementation by customers of each product may vary the suitability of specific product configurations and applications must be determined by the customer and is not warranted by NECCSD To allow for design...

Page 2: ...ce compo nents Section 2 General Specifications lists system specifications including dimensions weight environment safety compliance and power consumption Section 3 Hardware Functional Overview defines major system functions and subsys tems Section 4 Field Service Guidelines provides system disassembly procedures and an exploded view diagram with corresponding part numbers Section 5 Troubleshooti...

Page 3: ...1 7 Built In Disk Drive 1 7 PC Card Slot Compartment 1 7 Hard Disk Drive Compartment 1 8 Front of the Notebook 1 8 Battery Compartment 1 8 Left Side of the Notebook 1 9 DC IN Connector Jack 1 9 Hardware Reset Switch 1 10 The Rear of the Notebook 1 10 External Keyboard and PS 2 Mouse Port 1 10 VGA Port 1 11 Printer Port 1 12 Serial Port COM1 1 12 Bottom of the Notebook 1 12 Battery Module Handle an...

Page 4: ...Converter Battery Charger Specifications 2 15 Battery Charger Specifications 2 15 Keyboard Specifications 2 16 AC DC Adapter Specifications 2 16 BIOS Specifications 2 17 Micro Controller Function Description 2 18 Power Management Features Mode Definition 2 19 Power Management Features Mode Transition 2 20 Hot Key Definition 2 21 Environmental Specifications 2 21 Power Source Specifications 2 22 Vi...

Page 5: ...e Notebook s Interior 4 2 Protecting the Disk Drives 4 2 Handling the Computer Battery Packs 4 2 Maintaining the LCD Quality 4 3 Required Tools and Replacement Procedures 4 3 Parts Removal and Replacement Procedures 4 4 Removing Replacing the Notebook Battery Pack 4 4 Removing Replacing the Hard Disk Drive Module 4 5 Removing Replacing the Diskette Drive Module 4 5 Removing Replacing the LCD Statu...

Page 6: ...4 Informational Messages 5 7 Run time Error Messages 5 8 Quick Troubleshooting 5 9 Appendix A Video Modes VGA Standard Modes A 1 VGA Extended Modes A 3 VGA High Refresh Modes A 5 List of Figures 1 1 NEC Versa 2500 Series Notebook 1 1 1 2 System Configuration Diagram 1 3 1 3 Standard Keyboard Layout 1 5 1 4 VersaGlide 1 6 1 5 Memory Slot Compartment 1 7 1 6 Inserting a PC Card 1 8 1 7 Removing the ...

Page 7: ...el Configurations 1 1 1 2 Feature Highlights 1 2 1 3 Fn Key Combination Summary 1 5 1 4 Boot Main Setup Menu 1 15 1 5 Boot Setup Peripherals Menu 1 16 1 6 Boot Setup Security Menu 1 17 1 7 Boot Setup Power Savings Menu 1 18 1 8 16 MB Memory Configurations 1 19 2 1 NEC Versa 2500 Series Specifications 2 1 2 2 Product Mix 2 6 2 3 Main Board Specifications 2 7 2 4 Transfer Board Specifications 2 8 2 ...

Page 8: ...d Replaceable Parts 4 13 4 2 Packaging and Documentation Part Numbers 4 16 5 1 NEC Service and Information Telephone Numbers 5 1 5 2 POST Error Messages 5 4 5 3 BIOS Informational Messages 5 7 5 4 Run time Error Messages 5 8 5 5 Quick Troubleshooting 5 9 A 1 VGA Standard Modes Text Mode A 1 A 2 VGA Standard Modes Graphics Mode A 2 A 3 VGA Standard Modes Planar Mode A 2 A 4 VGA Standard Modes Packe...

Page 9: ...Contents ix A 13 VGA High Refresh Modes Packed Pixel Mode A 5 A 14 VGA High Refresh Modes Planar Mode A 5 A 15 VGA High Refresh Modes Packed Pixel Mode A 5 ...

Page 10: ...e the receiving antenna Increase the separation between the equipment and receiver Connect the equipment to an outlet on a circuit different from the one to which the receiver is connected To meet FCC standards shielded cables and power cords are required to connect this device to a personal computer or other Class B certified device Canadian Department of Communications Compliance Statement This ...

Page 11: ...nowledge DC direct current DIP dual in line package DLAB Divisor Latch Address bit DMA direct memory access DMAC DMA controller DOS disk operating system DRAM dynamic RAM DTE data terminal equipment ECC error checking and correction EDS error detecting system EGA Enhanced Graphics Adapter EMS Expanded Memory Specification EPP enhanced parallel port EPROM erasable and programmable ROM EVGA Enhanced...

Page 12: ...tional Service Response Center PAL programmable array logic PC personal computer PCB printed circuit board PFP plastic flat package PIO parallel input output pixel picture element PJQFP plastic J lead quad flat pack PLCC plastic lead chip carrier PLL phase lock loop p p peak to peak PPI programmable peripheral interface PROM programmable ROM QFP quad flat pack RAM random access memory RAMDAC RAM d...

Page 13: ...ansmitter V volt Vdc volts direct current VESA video electronics standards association VFO variable frequency oscillator VGA Video Graphics Array VLSI very large scale integration VRAM virtual RAM W watt µf microfarad µPD microprocessor µs microsecond Ω ohm ...

Page 14: ...ting the notebook The NEC Versa 2500 Series of note books are lightweight compact and fully IBM compatible The NEC Versa 2500 Series Notebook comes in the following model configuration Table 1 1 Model Configuration Configuration NEC Versa 2500 CPU Intel P54CSLM 133 On Board DRAM 16 MB Video Memory 1 MB Hard Disk Drive 1 4 GB Color LCD 12 1 DSTN LCD Battery Pack Type A 3500 mA NiMH Figure 1 1 NEC V...

Page 15: ...lution for external CRT monitor with 256 colors HDD Removable 2 5 inch IDE high capacity hard drive 12 7mm height FDD Built in 3 5 inch 1 44 MB floppy disk drive Keyboard Built in 87 88 key keyboard with 12 programmable function keys embedded numeric keypad and special function control keys dedicated screen control keys and inverted T cursor keys IBM enhanced 101 102 key compatible keyboard Pointi...

Page 16: ... Board Upgradable to 48MB Color LCD 800x600 DSTN VL Bus Controller VGA NEC VersaGlide Serial Interface RS 232C Parallel Interface Bank 1 Slot 1 4 8 16MB DIMM Built in HDD PCMCIA Card Slot x 2 PS 2 Keyboard Keyboard PS 2 Mouse RS 232C Peripheral Printer 3 5 FDD Battery Pack External VGA Monitor and PCMCIA Card INTEL P54CSLM TCP CPU Figure 1 2 System Configuration Diagram ...

Page 17: ... Fn key lower left corner and the desired brightness or contrast keys lower right corner at the same time Power Switch LCD Cover Switch The power switch button when pressed turns on the notebook s power Press it again to turn computer power off Whenever the notebook is in Save to file suspend mode the power switch button serves as a manual resume switch allowing you to continue your ap plication w...

Page 18: ...aker volume and power management features The embedded numeric keypad is activated by pressing the Num Lock key Once the Num Lock key is pressed the upper blue symbols become active NOTE Activating the Num Lock key in turn disables the alphanumeric keys where the embed ded keys are located Press the Num Lock key again to disable the embedded keys and resume normal keyboard operation Table 1 3 Fn K...

Page 19: ...ting and moving within documents The embedded editing keys are color coded in blue and embedded on the front side of the embedded numeric keypads To use these editing keys first press the Num Lock key and then combine the Shift key the desired function key to enable these editing keys When the embedded editing keys are op erational the Num Lock LED will be activated To return to normal keyboard op...

Page 20: ...r 720 KB double sided DS diskettes is on the right front side of the notebook Insert the diskette with the metal shutter towards the drive and the diskette label facing up To remove the diskette press the eject button found on the upper right of the floppy disk drive PC Card Slot Compartment The compartment houses two card slots that support two Type II devices or one Type III device Open the comp...

Page 21: ...The system BIOS also includes Auto IDE detection and LBA mode for easy installa tion as well as later upgrades for higher capacity disk drives Front of the Notebook This section describes the features on the front side of the NEC Versa 2500 Series com puter Battery Compartment The battery compartment is in the left front corner of the notebook It houses the recharge able NiMH battery pack The batt...

Page 22: ...Connector Jack The NEC Versa 2500 series provides a universal auto switching AC adapter which con nects the AC power cord into the power outlet It is important to have the AC adapter con nected to the notebook to recharge the battery and keep the notebook working continuously NOTE Use only the AC adapter that comes with the NEC Versa 2500 Series notebook DC IN Connector Reset Switch Power Switch ...

Page 23: ...ouse Port The external keyboard and PS 2 mouse port allows you to connect an external full sized IBM AT enhanced keyboard When an external keyboard is connected both the built in keyboard of the notebook and the external keyboard can be used simultaneously The NEC Versa 2500 Series also provides a Y connector adapter allowing simultaneous use of an external AT enhanced keyboard and a PS 2 mouse Wh...

Page 24: ...a VGA VESA driver diskette for installing different display resolution drivers for Windows Setup You can also toggle the display between the LCD and the external monitor by pressing the Fn key F10 key combination NOTE Even when set to 800x600 or 1024x768 resolution the external monitor only shows 800x600 resolution if the computer is running at Simultaneous display Toggle the dis play to the exter...

Page 25: ... Port Serial Port COM1 The 9 pin serial port provides a serial interface for a RS 232C device such as external serial modem This port is commonly referred to as COM1 Figure 1 14 Connecting to the Serial Port NOTE First power off the system before con necting an external serial device After turning on the power again run the BIOS Setup program if needed Bottom of the Notebook The bottom of the New ...

Page 26: ...ush the battery compartment latch as indicated by the arrow marked on it While doing this hold the handle of the battery module and slowly pull it out from its compartment ROM Memory Compartment Cover The ROM memory compartment cover is secured by tabs Lift the cover with your finger nail to open this cover the ROM chip is inside It is not necessary to remove this cover while performing normal ser...

Page 27: ...ollowing message Press F2 to Enter SETUP Press the F2 key to run the BIOS Setup program The BIOS Setup program is organized into two pages of menus Change settings using the PgDn and PgUp keys To move from one option to another you use the up and down arrow keys while using the spacebar and keys to change the settings To exit the BIOS Setup program simply press the Esc key and select from the list...

Page 28: ... by the BIOS during its POST The value should not exceed or go below 640 KB Extended Memory This field reports the amount of extended memory found by the BIOS during POST The value displayed is the amount of the memory address map Because all models in the NEC Versa 2500 Series have a minimum of 16 MB of memory as the standard configuration this value should not be less than 7168 KB Boot Options T...

Page 29: ...ial port as either 3F8 IRQ4 2F8 IRQ3 3E8 IRQ4 2E8 IRQ3 or disabled The default is 2F8 IRQ3 Parallel Port This option allows you to configure the notebook s parallel port as either 378 IRQ5 3BC IRQ7 278 IRQ5 378 IRQ7 or none The default is 378 IRQ7 Parallel Mode This option allows you to configure the notebook s parallel mode as either Unidirectional Bi directional Enhanced or ECP The default is EC...

Page 30: ...ee note below Set Password Press Enter to enter the Password Password on Boot This option allows you to configure the Password to be en abled at the operating system level Password on Re sume This option allows you to configure the Password to be en abled when resuming from the Suspend mode The Caps Lock and Scroll Lock LED s flash in sequence for 30 seconds indicating that the password is require...

Page 31: ...ve to File the computer saves data to the hard drive It is important to have a hidden file on the hard drive when enabling this otherwise an error message appears on the display screen when the system restarts Select SUSPEND the computer saves data to RAM The computer switches to the Suspend mode after the preset time of inactivity During this Suspend mode the computer becomes inactive all devices...

Page 32: ... SYSTEM UPGRADES The NEC Versa notebook is easily upgradable to a higher capacity hard drive In addition you can add an optional second memory modules to increase the system memory to as much as 48 MB This section provides the settings needed as well as illustrations for up grading the system MEMORY UPGRADE PROCEDURE The NEC Versa notebook allows you to install and expand the on board 16 MB system...

Page 33: ...nstallation for both sockets is the same 6 Replace the keyboard status bar cover and hinge covers 7 Reconnect the AC adapter and insert the battery pack into the computer 8 Power on the notebook and notice the BIOS error message informing you that the memory size stored in CMOS does not match the installed memory size Press F2 to run the SETUP program and save the CMOS settings anew The computer a...

Page 34: ...e restarting the com puter When booting DOS press F5 to bypass the CONFIG SYS and AUTOEXEC BAT You may also choose to boot from Drive A with a clean DOS diskette 3 At the DOS prompt type PHLASH BIOSfilename ROM to activate Flash BIOS programming utility The computer then prompts you again before starting to update the system BIOS After programming is complete the system prompts you to reboot the c...

Page 35: ...Modules 8 MB 16 MB 32 MB 256 KB L2Cache RAM Module Slot Two Slots System Management 2M 256K x 8 Flash BIOS Includes System and VGA Shadow BIOS Capability Power Management Operation Modes Full On Mode Doze Mode Standby Mode 5V Suspend Mode 0 volt Suspend Mode Peripheral Automatic Power Down Cover Switch Support Hard Disk Drive Removable HDD Module 2 5 inch format 12 7mm high Enhanced IDE Interface ...

Page 36: ...colors 1024 x 768 in 256 colors LCD CRT Display Simultaneously 32 bit PCI Bus LCD CRT Auto Sense 32 bit Graphics Engine Video RAM 1 MB as Standard 5V EDO 60NS DRAM 40 Pin SOJ PCMCIA Slots Two Type II slots or one Type III slot PCMCIA Socket compatible with CARD BUS standard Pointing Device Nec VersaGlide PS 2 Interface Keyboard Keyboard Layout US Layout 87 Keys European Layout 88 Keys Support Extr...

Page 37: ... Fn Up Brightness Up Fn Down Brightness Down Fn PgDn Decrease Speaker Volume Fn PgUp Increase Speaker Volume Fn F10 CRT LCD Simul Fn F11 Backlight On Off I O Port 25 pin Parallel Port 9 pin Serial Port 15 pin VGA Monitor Port External Keyboard or PS 2 Mouse Port NEC Y Cable Support DC IN Jack IR Port Port Replicator Support Game port TV out External Keyboard External PS 2 Mouse Serial Port COM1 Pr...

Page 38: ...tery Charge PCMCIA A B Slot Read Write HDD FDD CD ROM Read Write PMU Enable Num Lock Enable Caps Lock Enable Scroll Lock Enable Power Supply AC Adapter AC 100V to 240V 47 63Hz 36W Max Constant Power Output Dimensions 120 L x 60 W x 36 H mm Battery Input Battery A 10 long A size 3500mA hr Ni MH Battery Cells 12V Total 42W Battery Fast Charge Single Battery Pack Machine On 6 hours maximum Machine Of...

Page 39: ...ersaGlide TM1002S D Synaptics or KGDDBA 911A Alps Battery Panasonic NiMH 1 2V LA HHR350A Sanyo NiMH 1 2V LA HR 4 3 Audio Amplifier ROHM BA7786FP Micro Controller Micro Chip PIC16C62 Clock Generator ICS AV9154 43 Buffer NS CGS74CT2524 CGS74CT2525 Core Logic UMC 8891BF N UMC 8892BF N UMC 8886BF N VGA Chip C T 65548 Super I O NS PC87336VLJ PCMCIA Controller Omega 82C094 Decoder Omega OM82C28 Power Sw...

Page 40: ...roduct mix Table 2 2 Product Mix Versa 2500 CPU Intel Pentium 133 MHz P54CSLM TCP On Board DRAM 16 MB 256KB L2 Cache Video RAM 1 MB HDD 1 4 GB LCD 12 1 DSTN LCD FDD Removable CD ROM 8x Battery Pack Type A 3500mAH NiMH Pointing Device Glide Pad PCMCIA 2 x Type II 1 x Type III Keyboard 87 88 Keyboard Windows 95 EPP ECP Parallel Yes Serial Port Yes VGA Port Yes PS 2 Port Yes DC in Jack Yes Audio Port...

Page 41: ...4 Video RAM 256K x 16 bit DRAM 5V 60ns SOJ x 2 System Chipset UMC UM8891BN 208 Pin PQFP UMC UM8892BN 208 Pin PQFP VGA C T 65548 208 Pin PQFP PCMCIA Omega 82C094 208 Pin TQFP Omega 82C028 28 Pin SOIC Internal Connector Socket To System PCB 100 Pin AMP To HDD 50 Pin KEL To CD ROM 40 Pin KEL 2 Pin Molex To Transfer PCB 2 Pin Molex To DC Converter 32 Pin Suyin External Connector COM1 9 Pin Suyin Print...

Page 42: ...FDD 100 Pin AMP To second battery 100 Pin AMP PCB Thickness 1 2mm Layers 4 CONVERTER BOARD SPECIFICATIONS The following table lists Converter board specifications Table 2 5 Converter Board Specifications ITEM SPECIFICATION Internal Connector To I O PCB 32 Pin Suyin To 1 st Battery 10 Pin Suyin External Connector To Y Cable Connector 32 Pin Suyin To AC Adapter 2 Pin PCB Thickness 1 2mm Layers 6 ...

Page 43: ...cifications Table 2 6 LED Indicator Board Specifications ITEM SPECIFICATION Internal Connector To System PCB 50 Pin Suyin To System PCB 40 Pin Suyin To LCD Panel 50 Pin KEL To Inverter 8 Pin Molex To Left Speaker 2 Pin Molex To Right Speaker 2 Pin Molex To LCD Panel 41 Pin KEL To IR 8 Pin Temic To USB 4 Pin AMP ...

Page 44: ... 768KHz DIP Type Crystal 4 MHz DIP Type Generator AV9154 43 SOP 16 Pin Buffer CGS74CT2524 ROM Flash ROM for BIOS 256K x 8 150ns System Chip Set UMC UM8886BN 208 Pin PQFP Super I O NS87336 100 Pin PQFP Keyboard Controller Mitsubishi 38813M4 64 Pin QFP Micro Controller PIC16C62 28 Pin SOIC CMOS Battery VARTA 60mA 3 6V NiMH Battery Audio ES17888 Sound Chip 100 Pin PQFP Amplifier ROHM BA77786FS 25 Pin...

Page 45: ...onnector To System PCB 100 Pin AMP To System PCB 100 Pin AMP To HDD Unit 50 Pin KEL To CD ROM Unit 40 Pin KEL To RTC Battery 2 Pin Molex To Transfer PCB 40 Pin Suyin To DC Converter 32 Pin Suyin External Connector COM1 9 Pin Suyin Printer 25 Pin Suyin Docking 160 Pin Berg PCB Thickness 1 2 mm Layers 6 ...

Page 46: ...Table 2 8 LCD Inverter Board Specifications ITEM Specification Color Inverter Panasonic 12 1 DSTN LMG9980ZWC Input Voltage 8V to 20V Output Voltage 500VAC Max Contrast Voltage 28V 31V Output Load Current 6mA Max Brightness Control Hot Key Contrast Control Hot Key Efficiency 70 Min Unit Size L x W x H 146 L x 22 5 W x 9 5 H ...

Page 47: ...ing Table 2 9 Status LED Descriptions ITEM LED PMU Enabled HDD FDD and CD ROM Read Write PC Card Slots Read Write Num Lock Caps Lock Scroll Lock DISKETTE DRIVE SPECIFICATIONS The following table lists the standard diskette drive specifications Table 2 10 Diskette Drive Specifications ITEM Specification Module 3 5 Module Mode 2 Mode FDD 1 44 MB 720 KB Unit Size 110mm L x 96mm W x 12 7mm H ...

Page 48: ...12 7mm H CD ROM SPECIFICATIONS The following table lists the standard CD ROM reader specifications Table 2 12 CD ROM Reader Specifications ITEM SPECIFICATION Module 8X CD ROM TEAC Mode IDE Interface Data Transfer 13 3 MB sec Unit Size 140 5mm L X 130 6mm W X 17 0mm H NIMH BATTERY PACK SPECIFICATIONS The following table lists the standard battery specifications Table 2 13 Battery Specifications ITE...

Page 49: ...ction Short Circuit Protection OCP Input under voltage latch Efficiency 80 Min Typ PCB 1 2mm 6 Layers BATTERY CHARGER SPECIFICATIONS The following table lists battery charger specifications Table 2 15 Battery Charger Specifications ITEM SPECIFICATION Input Voltage 20V Max Support Battery NiMH Battery 12V Protection Max Temp Max Timer Charge Method Delta T Delta t 1 o C min Max Temperature 53 o C 6...

Page 50: ... Pitch 19 05mm AC DC ADAPTER SPECIFICATIONS The following table lists AC DC adapter specifications Table 2 17 AC DC Adapter Specifications ITEM SPECIFICATION Input Voltage AC 90V 265V 50 63Hz Ripple Noise 100mvp P Output Voltage 20V Max Protection Short Circuit UVP OVP AC Cord Safety Approval FCC Shielding AC cord DC Output Cable 2 pin 100cm long with coil at system end Indicator AC Power On Unit ...

Page 51: ...selection on Setup Menu Support for IR communication port Parallel Port Support EPP ECP and Standard Printer Port Address Provide Optional Item in Parallel Port on Setup Menu Shadow Cache Always enable VGA and System BIOS Shadow PCMCIA Phoenix PCM Plus will be provided PCMCIA 2 1 Specification Compliance External Device Support Interface of external PS 2 mouse and external keyboard The internal Gl...

Page 52: ...N The following table lists Micro Controller specifications Table 2 19 Micro Controller Specifications ITEM SPECIFICATION Y Connector Support External PS 2 Mouse and External Keyboard can be used LED Connector Caps Lock and Scroll Lock Status should be kept during Suspend Process Support AC IN Battery Charging Battery Low Suspend To RAM Status LED System Peripheral Control Support the Audio Contra...

Page 53: ...DD COM1 COM2 LPT2 Audio Standby Mode Timer CPU State DRAM State VGA State Audio State AMP Circuit HDD State LCD state Activity Events Off 1 2 4 8 16 Min Stop Clock Slow Refresh Standby Power Down Power Down Power Down Backlight Off Negative Volt Off Video Monitoring Keystrokes FDD HDD COM1 COM2 LPT1 Audio Suspend To RAM Timer CPU State DRAM State LCD State VGA HDD I O Chip PCMCIA Audio AMP Circuit...

Page 54: ...wer Off Off POWER MANAGEMENT FEATURES MODE TRANSITION The following table lists power management transition modes Table 2 21 Mode Definitions FROM TO FULLY ON DOZE SLEEP SUSPEND Fully On X 1 X 2 Doze 3 X 4 5 Sleep 6 X X 7 Suspend 8 X X X 1 Doze Mode Time Out APM CPU Idle 2 APM Power Management Event System Suspend Request Notification Battery Low Low Condition Suspend Events Occurs 3 Fully On Acti...

Page 55: ...D CRT SIMUL Display Fn F11 Panel Backlight On Off Fn F8 PC Speaker Only Fn right Contrast Up Fn left Contrast Down Fn PgUp Speaker Volume Increases Fn PgDn Speaker Volume Decreases Fn up Brightness Increases Fn down Brightness Decreases Num Numeric Lock ENVIRONMENTAL SPECIFICATIONS The following table lists appropriate operating temperatures Table 2 23 Environmental Specifications ITEM SPECIFICATI...

Page 56: ...ration Duration Time 60 min for each axis Non Operating Direction of Movement X Y Z Axis Vibration Level 5 500 5 Hz 2 Gs Acceleration Duration Time 60 min for each axis SHOCK SPECIFICATIONS The following table lists system shock specifications Table 2 26 Shock Specifications ITEM MODE Operating Mode Impact Accelerator 1g 10g Based on Half Sine Wave Shock Pulses of 11 Msec Number of Shock 3 Shocks ...

Page 57: ...TIC DISCHARGE ESD SPECIFICATIONS The following table lists static discharge specifications Table 2 27 Electro Static Discharge Specifications ITEM SPECIFICATION Contact Discharge 2 4 8 12 5 15 kV Air Discharge 2 4 15 kV HCP 2 4 kV VCP 2 4 kV ...

Page 58: ...mented on the I O board keyboard subsystem implemented on part of the system board and keyboard as sembly PCMCIA controller and sockets implemented on the system board pointing device subsystem implemented on the I O board and keyboard assem bly hard disk subsystem implemented on the system board and the hard drive as sembly floppy disk subsystem implemented on the system board and the diskette dr...

Page 59: ...UPER I O NS PC87336VLJ GLIDE PAD EXT KB MOUSE INTERNAL KB CARD 1 CARD 0 FDD HDD PRINTER CLOCK GEN ICS AV9154 43 AC or DC ADAPTER DC DC CONVERTER 24MHz 14 318MHz X TAL BATTERY IN VIDEO RAM 1MB COM1 Battery IN 3 45V 5V 12V 66MHz 14 318MHz Pentium P54CSLM 133MHz Figure 3 1 Functional Block Diagram SYSTEM BIOS The primary function of the system BIOS Basic Input Output System is to provide a se ries of...

Page 60: ...ed architecture of the integer unit combined with single cycle execution branch prediction 16 Kbyte write back cache and single cycle instruction decode results in true 586 class performance These features result in a 60 to 90 percent gain in processing speed compared to the Cyrix 486DX2 50 Additionally the P54CSLM CPU provides many power savings features making it ideal for power sensitive system...

Page 61: ...y designed for notebook computers and other portable computers Aside from supporting almost all 586 based CPUs the UM8890 also integrates PMU System Controller RTC and Peripheral Controller 206 into a single 208 QFP package Features Summary System Fully compatible with IBM PC AT Supports PCI Bus Master mode System Operation Voltage from 3V to 5 5V Three programmable non cacheable regions Flash ROM...

Page 62: ...Power Management Supports up to Ten Programmable PMC Outputs Supports Multiple Power Saving Mode All Register Read Writeable for 0V SUSPEND Microsoft APM Compatible Supports 0V SUSPEND Demand Driven Clock Control Supports Resume Suspend Auto Wake Up Function Three Low Battery Monitor Input System Operating Voltage from 3V to 5 5V Low Power Consumption at 3 3V 50mA at Full On Mode 25mA at Doze Mode...

Page 63: ... SUBSYSTEM The I O Subsystem of the notebook is implemented on the I O Board using the NS PC87336VLJ chipset The supported I O interface on the notebook includes the internal hard disk drive interface the internal floppy disk drive interface the external printer port interface the external serial port and the external PS 2 keyboard and mouse ports Feature s summary of the NC87336VLJ Compatible wit...

Page 64: ...ses up to 32 bits in width When combined with the CHIPS advanced linear acceleration software driver technology this device exhibits exceptional performance compared with devices of similar architecture The 65548 also adds a sophisticated 32 bit graphics hardware engine for the Bit Block Transfer BITBLT line drawing hardware cursor and other functions intensively used in Graphical User Interface G...

Page 65: ...ersa 2500 Series notebooks provide a 15 pin female D type external VGA con nector that can be connected to an external video graphics adapter VGA type monitor Another feature of the notebook computer is the ability to auto sense the display output to both LCD and the external CRT monitor The notebook provides external resolution of 1024x768 by 256 colors for the NEC Versa 2500 series with 1 MB vid...

Page 66: ...bus and to PCMCIA sockets without glue logic Serial Power Control to support the designs with most PCMCIA power switch IC Legacy DMA and serial IRQ to directly support advanced PCI Core Logic Single Chip PCMCIA host controller Supports CLOCKRUN of the PCI Mobile Design Guide for power saving Intelligent power management for lowest operating power Programmable power management with individual socke...

Page 67: ...skettes POINTING DEVICE SUBSYSTEM The pointing device subsystem consists of the VersaGlide device on the system top cover assembly and a pre programmed Mitsubishi M38813M4 micro controller that interfaces the mouse device to the system board An external PS 2 port also supports the use of an exter nal PS 2 compatible mouse which the system automatically detects during system power up and then disab...

Page 68: ...ff while it should take around 6 hours maximum when the computer is running Power Board The power board receives approximately 12VDC from the battery pack and uses this input voltage to generate 12V 5V 3 3V 3 45V regulated output voltages to provide power for all internal notebook board assemblies The output of the 5V regulator also drives the LCD inverter circuit on the LCD inverter board assembl...

Page 69: ...unit and LCD even after the system has been turned off Cleaning the Notebook s Exterior Use the steps described below to clean the outer surface of the system 1 Power off the system remove the primary battery pack and unplug all cables connected to the system 2 Wipe the outside of the system unit keyboard and display with a soft clean cloth Remove any stains with water only Use glass cleaner to cl...

Page 70: ...ou 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 comp...

Page 71: ...is to shut down the machine and close the cover but the display surface no matter what type it is and the components inside the computer radiate heat So when you close the cover you will then trap this heat up against the screen Leaving the computer cover open for about ten minutes while the heat disperses eliminates this potentially damag ing situation REQUIRED TOOLS AND EQUIPMENT All NEC Versa 2...

Page 72: ...removing and replacing the battery pack is as follows 1 Turn off the computer Close the LCD cover and turn the whole unit over 2 You will find a clamp latch lock knob that is securing the internal battery pack to the system unit To remove the battery pack push the lock knob sideways with one hand and with the other hand pull the battery pack out Note that this has to be done simultaneously 3 To re...

Page 73: ...To replace the hard disk drive remove the four flat screws attaching it to the null hard disk assembly and remove the hard disk drive cable 4 To replace the hard disk drive module reverse the above procedure Figure 4 1 Hard Drive Module Assembly Removing Replacing the Diskette Drive Module The procedure for removing and replacing the diskette drive is as follows 1 Turn off the computer Close the L...

Page 74: ...skette drive cable 5 To replace the diskette drive module reverse the above procedure Figure 4 2 Diskette Drive Module Assembly Removing Replacing the LCD Status Bar Cover and Hinges Remove the LCD Status Bar Cover and Hinge Covers are as follows 1 Turn off the computer Follow all disassembly procedures mentioned from the start of this section 2 Slide the left and right hinge covers out to remove ...

Page 75: ...into the FPC type connector on the system board and tilt the keyboard back into place Removing Replacing the Heat Plate This is a heat shield for the CPU and power board Remember the CPU is in contact with this part so be careful when removing it from the unit 1 Turn off the computer Follow all disassembly procedures mentioned from the start of this section 2 Remove the six screws and carefully li...

Page 76: ...isplay LCD Assembly Module The procedure for removing the Cover Display LCD Assembly Module is as follows 1 Turn off the computer Follow all disassembly procedures for removing the hinge covers status bar cover and keyboard as mentioned earlier in this section 2 Remove the center screw on both hinge mounts the grounding screw to the left of the connector on the LED Board assembly and remove the co...

Page 77: ...ard Pull these cables out and remove the whole top cover assembly 4 The VersaGlide module is assembled to the system top cover case Turn the top cover case over and locate the VersaGlide printed circuit board Remove the six screws securing the module and remove the VersaGlide assembly 5 To replace the whole top case assembly reverse the removal procedures men tioned above We recommend that you rem...

Page 78: ...nd I O board is as follows 1 Turn off the computer Follow all disassembly procedures mentioned from the start of this section 2 Remove the two large posts from the center of the system board and the two screws from the lower leg of the I O Board 3 From the back of the unit remove the six spacers and two screws around the four plug in connectors 4 Since the system board is the main unit of the note...

Page 79: ...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 rev...

Page 80: ...power board is as follows 1 Turn off the computer Follow all disassembly procedures mentioned from the start of this section 2 Remove the two hex spacers from the center of the board and lift the module from the unit 3 To replace the power board module reverse the removal procedures mentioned above Figure 4 6 Power Board Module Assembly ...

Page 81: ...0 7 VersaGlide Assembly 51 70185 11 8 Cover Left Hinge 24 40827 00 9 U S Keyboard 71 30335 00 10 LCD Cable Assembly 12 1 22 20296 00 11 NEC Model Nameplate NEC Versa 2500 25 41141 00 12 LCD Front Panel Assembly 12 1 24 40836 00 13 LCD Hitachi 12 1 71 10480 00 14 LCD Inverter 12 00146 00 15 LCD Rear Cover 12 1 24 40819 01 16 NEC Logo 25 41140 00 17 Cover Right Hinge 24 40828 00 18 Status Cover 24 4...

Page 82: ...M Door 24 40810 10 30 Rubber Foot 24 80631 10 31 Bottom Cover Assembly 24 40793 10 32 Keyboard Bracket 24 50227 00 33 8MB Memory Module EDO 02 30109 00 34 16MB Memory Module EDO 02 30110 00 35 Docking Door 24 40795 10 36 LCD Assembly DSTN 12 1 56 10076 00 Not shown in IPB figure ____________ This data was prepared January 1997 For an up to date listing of spare parts please call FastFacts 800 366 ...

Page 83: ...Field Service Guidelines 4 15 Figure 4 7 NEC Versa 2500 Series Illustrated Parts Breakdown ...

Page 84: ...tion part numbers are listed in Table 4 2 Table 4 2 Packaging and Documentation Part Numbers Description Model Number NEC Versa 2500 Series User s Guide 25 10584 00 NEC Versa 2500 Series Service and Reference Manual this guide 819 200191 000 Rev 00 Shipping Carton 1 set 25 20571 02 ...

Page 85: ...attendant and select the appropriate menu to reach one of the following departments Information Center literature dealer locations sales leads response to ads NSRC National Service Response Center questions other than products spare parts or technical support Service Contracts TSC Technical Support Center technical support for everyone else FastFactsTM automated service that sends the latest infor...

Page 86: ... sheets techni cal information bulletins price lists and other information Information can be obtained from the FastFacts service 24 hours a day 7 days a week Us ing a touch tone telephone call the FastFacts number order the desired information through the automated attendant and FastFacts will automatically send the information to you Catalogs are available that list all of the documents and the ...

Page 87: ...on requested is automatically sent to your fax machine If FastFacts attempts to send the second order before the first order is completed the order may be canceled After three tries FastFacts assumes that the line is busy and does not process the order HELPFUL STARTERS Here are some helpful items to check before troubleshooting the notebook Is there any external power source connected to the compu...

Page 88: ... bootable diskette and retry No display message system will beep when adapter fails The primary video adapter failed Check the primary video adapter Gate A20 failure The keyboard controller is not accepting command specifically the enable and disable A20 command Check the keyboard controller and system board Turn the power off then back on again If the problem persists contact qualified NEC servic...

Page 89: ...e system board Turn the power off then back on again If the problem persists contact qualified service personnel Shutdown failure Either the keyboard controller is not accepting the reset command or the associated reset logic has failed Check the keyboard controller and system board Turn the power off then back on again If the problem persists contact qualified service personnel Time of day not se...

Page 90: ...e personnel Keyboard stuck key failure A key is jammed Locate the jammed key and fix it Make sure the keyboard cable and keyboard are connected properly Turn the power off then back on again If the problem persists contact qualified service personnel Memory failure at hex value read hex value expecting hex value Circuitry associated with the memory chips has failed Turn the power off then back on ...

Page 91: ...he spacebar while memory tests were running and stopped the memory tests Press the F1 key to continue This message indicates that an error was found during POST Pressing the F1 key allows the system to attempt to reboot Beginning memory test Press the SPACEBAR to terminate the memory test A user can stop the memory tests by pressing the spacebar Press the F1 key to continue F2 to run the Setup uti...

Page 92: ...t at address Type S hut off NCI R eboot other keys to continue A memory chip s has failed Replace the system board Unexpected HW interrupt interrupt at address Type R eboot other keys to continue Hardware problem Not displayed if the expected interrupt handler is not enabled Check all hardware in the system Unexpected SW interrupt interrupt at address Type R eboot other keys to continue Error s in...

Page 93: ...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 ac...

Page 94: ...ive does not work Check if the diskette drive cable is connected properly Check the diskette type if correct and not faulty Replace the diskette drive Replace the system board Hard disk drive malfunction Check if hard disk drive is set properly on CMOS SETUP Check the drive cables and connections Check if the disk drive is good Replace the system board Memory malfunction Check if the memory module...

Page 95: ...und for the card being used Replace the system board Serial device does not work Check if the serial device is connected properly Replace the serial device Check the I O controller chip on the system board for any cold or loose soldering Replace the system board Parallel device does not work Check if all connections are properly set Check if external device is turned on Check I O controller chip o...

Page 96: ...ables denotes Interlaced monitors VGA STANDARD MODES The following table lists VGA standard modes Table A 1 VGA Standard Modes Text Mode Hex Mode No of Colors Text Display Font Size Pixel Resolution Dot Clock MHz Horiz Freq KHz Vert Freq Hz 0 1 16 40 x 25 40 x 25 40 x 25 9 x 16 8 x 14 8 x 8 360 x 400 320 x 350 320 x 200 28 322 25 175 25 175 31 5 70 2 3 16 80 x 25 80 x 25 80 x 25 9 x 16 8 x 14 8 x ...

Page 97: ...rs Text Display Font Size Pixel Reso lution Dot Clock MHz Horiz Freq KHz Vert Freq Hz D 16 40 x 25 8 x 8 320 x 200 25 175 31 5 70 E 16 80 x 25 8 x 8 640 x 200 25 175 31 5 70 F Mono 80 x 25 8 x 14 640 x 350 25 175 31 5 70 10 16 80 x 25 8 x 14 640 x 350 25 175 31 5 70 11 2 80 x 30 8 x 16 640 x 480 25 175 31 5 70 12 16 80 x 30 8 x 16 640 x 480 25 175 31 5 70 Table A 4 VGA Standard Modes Packed Pixel ...

Page 98: ...Horiz Freq KHz Vert Freq Hz 20 16 80 x 30 8 x 16 640 x 480 25 175 31 5 60 22 16 100 x 37 8 x 16 800 x 600 40 0 37 5 60 24 16 128 x 48 8 x 16 1024 x 768 65 0 48 5 60 24I 44 9 35 5 43 Table A 7 VGA Extended Modes 8 Bit Linear Mode Hex Mode No of Colors Text Display Font Size Pixel Reso lution Dot Clock MHz Horiz Freq KHz Vert Freq Hz 30 256 80 x 30 8 x 16 640 x 480 25 175 31 5 60 32 256 100 x 37 8 x...

Page 99: ... 27 1 51 6 Table A 11 VGA Extended Modes Planar Mode Hex Mode No of Colors Text Display Font Size Pixel Reso lution Dot Clock MHz Horiz Freq KHz Vert Freq Hz 6A 70 16 100 x 37 8 x 16 800x 600 40 0 38 0 60 72 75 16 128 x 48 8 x 16 1024 x 768 65 0 48 5 60 72 75I 44 9 35 5 43 Table A 12 VGA Extended Modes Packed Pixel Mode Hex Mode No of Colors Text Display Font Size Pixel Reso lution Dot Clock MHz H...

Page 100: ... 800 x 600 49 5 46 9 75 Table A 14 VGA High Refresh Modes Planar Mode Hex Mode No of Colors Text Display Font Size Pixel Reso lution Dot Clock MHz Horiz Freq KHz Vert Freq Hz 12 16 80 x 30 8 x 16 640 x 480 31 5 37 5 75 6A 70 16 100 x 37 8 x 16 800 x 600 49 5 46 9 75 Table A 15 VGA High Refresh Modes Packed Pixel Mode Hex Mode No of Colors Text Display Font Size Pixel Reso lution Dot Clock MHz Hori...

Page 101: ... ac cording to the manufacturer s instructions ATTENTION Il y a danger d explosion s il y a replacement incorrect de la batterie Remplacer uniquement avec une batterie du même type ou d un type recommandé par le constructeur Mettre au rébut les batteries usagées conformément aux instructions du fabricant BATTERY DISPOSAL The main battery and CMOS clock battery are made of nickel metal hydride NiMH...

Page 102: ...sassembly battery pack 4 4 CPU 4 7 diskette drive 4 5 hard disk drive 4 5 heat plate 4 7 I O board 4 10 keyboard 4 7 LCD 4 8 LCD status bar cover 4 6 LED board 4 9 Power board 4 12 required tools 4 3 system board 4 10 top cover 4 8 VersaGlide 4 8 Disassembly procedures 4 4 Diskette drive standard 1 7 Diskette drive specifications 2 13 E Embedded numeric keyboard 1 5 Environmental specifications 2 ...

Page 103: ...rd slot using 1 8 PCMCIA controller 3 9 PCMCIA sockets 3 9 PHDisk utility 1 20 POST messages 5 4 Power board 3 11 Power connector 1 9 Power management modes 2 19 Power specifications 2 22 Power subsystem 3 10 Power switch 1 4 Power on self test POST 1 14 Preventive maintenance 4 1 Printer connecting 1 12 Product information Using FastFacts 5 2 PS 2 mouse 1 10 Q Quick troubleshooting 5 8 R Resoluti...

Page 104: ...2 8 Troubleshooting checklist 5 3 V VersaGlide subsystem 3 10 VGA extended modes A 3 VGA high refresh modes A 5 VGA port 1 11 VGA standard modes A 1 VGA VESA driver diskette 1 11 Vibration specifications 2 22 Video controller 3 7 features 3 7 Video modes A 1 Y Y adapter 1 10 ...

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