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PROPRIETARY NOTICE AND LIABILITY DISCLAIMER
The information disclosed in this document, including all designs and related materials, is the valuable property of NEC Computer Systems Division, Packard Bell NEC, Inc. (NECCSD, PBNEC) and/or its licensors. NECCSD and/or its licensors, as appropriate, reserve all patent, copyright and other proprietary rights to this document, including all design, manufacturing, reproduction, use, and sales rights thereto, except to the extent said rights are expressly granted to others. The NECCSD product(s) discussed in this document are warranted in accordance with the terms of 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 and specification improvements, the information in this document is subject to change at any time, without notice. Reproduction of this document or portions thereof without prior written approval of NECCSD is prohibited.
NEC is a registered trademark of NEC Corporation; Versa is a U.S. registered trademark of NEC Technologies, Inc.; all are used under license by NEC Computer Systems Division (NECCSD), Packard Bell NEC, Inc. All other product, brand, or trade names used in this publication are the trademarks or registered trademarks of their respective trademark owners.

First Printing -- March 1997 Copyright 1997 NEC Computer Systems Division, Packard Bell NEC, Inc. 1414 Massachusetts Avenue Boxborough, MA 01719 All Rights Reserved

xi

Preface
This service and reference manual contains the technical information necessary to set up and maintain the NEC Versa® 2500 Series notebook computer. It also provides hardware and interface information for users who need an overview of the system's design. The manual is written for NEC-trained customer engineers, system analysts, service center personnel, and dealers. The manual is organized as follows: Section 1 Introduction, provides an overview of the hardware and interface components. 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 subsystems. Section 4 Field Service Guidelines, provides system disassembly procedures, and an exploded-view diagram with corresponding part numbers. Section 5 Troubleshooting and Repair, lists technical support phone numbers, error messages and their meanings, and ways to troubleshoot problems users encounter with the notebook. Appendix A Video Modes, provides a list of video modes available for use with the notebook. An Index is included for convenience.

iii

Contents
Preface......................................................................................................................... xi 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

iv

Contents

System BIOS Upgrade Procedure ................................................................................1-20
Section 2 General Specifications

Product Mix.................................................................................................................2-6 System Board Specifications ........................................................................................2-7 Transfer Board Specifications ......................................................................................2-8 Converter Board Specifications....................................................................................2-8 LED Indicator Board Specifications.............................................................................2-9 I/O Board Specifications ..............................................................................................2-10 LCD Inverter Board Specifications ..............................................................................2-12 LED Status Indicators Specifications ...........................................................................2-13 Diskette Drive Specifications .......................................................................................2-13 HDD Unit Specifications..............................................................................................2-14 CD-ROM Specifications ..............................................................................................2-14 NIMH Battery Pack Specifications...............................................................................2-14 DC/DC 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 Vibration Specifications ...............................................................................................2-22 Shock Specifications ....................................................................................................2-22 Electro-Static Discharge (ESD) Specifications .............................................................2-23
Section 3 Hardware Functional Overview

Functional Block Diagram............................................................................................3-2 System BIOS ...............................................................................................................3-2 System Processor..................................................................................................3-3 Major Functional Blocks .......................................................................................3-3 System Logic Controller ..............................................................................................3-4 Memory Subsystem......................................................................................................3-6

Contents

v

DRAM Memory....................................................................................................3-6 ROM Subsystem ...................................................................................................3-6 I/O Subsystem .............................................................................................................3-6 VIDEO Subsystem.......................................................................................................3-7 Video Chipset Controller ......................................................................................3-7 External VGA Capability.......................................................................................3-8 Keyboard Subsystem....................................................................................................3-8 PCMCIA Controller and Sockets .................................................................................3-9 Hard Disk Subsystem...................................................................................................3-9 Diskette Drive Subsystem ............................................................................................3-10 Pointing Device Subsystem ..........................................................................................3-10 Power Subsystem.........................................................................................................3-10 AC Power Adapter ...............................................................................................3-10 Internal Battery Pack ............................................................................................3-11 Power Board.........................................................................................................3-11 LCD Inverter Board Assembly ..............................................................................3-11
Section 4 Field Service Guidelines

Preventive Maintenance ...............................................................................................4-1 Cleaning the Notebook's Exterior .........................................................................4-1 Cleaning the 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 Status Bar Cover and Hinges .................................4-6 Removing/Replacing the Keyboard........................................................................4-7 Removing/Replacing the Heat Plate.......................................................................4-7 Removing/Replacing the CPU ...............................................................................4-7 Removing/Replacing the Cover-Display LCD Assembly Module ...........................4-8 Removing/Replacing the System Top Cover Assembly and the NEC VersaGlide Assembly...........................................................................................................4-8 Removing/Replacing the LED Board.....................................................................4-9

vi

Contents

Removing/Replacing the System Board and I/O Board..........................................4-10 Separating the System Board and I/O Board .........................................................4-11 Removing/Replacing the Power Board ..................................................................4-12 Illustrated Parts Breakdown .........................................................................................4-13 Packaging and Documentation ..............................................................................4-16
Section 5 Troubleshooting and Repair

Service Information......................................................................................................5-1 Technical Support........................................................................................................5-1 Product Information.....................................................................................................5-2 Ordering Information from FastFacts ....................................................................5-2 Helpful Starters............................................................................................................5-3 Power On Self Test (POST).........................................................................................5-4 POST Messages....................................................................................................5-4 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 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10 1-11 1-12

NEC Versa 2500 Series Notebook ................................................................. 1-1 System Configuration Diagram....................................................................... 1-3 Standard Keyboard Layout............................................................................. 1-5 VersaGlide..................................................................................................... 1-6 Memory Slot Compartment............................................................................ 1-7 Inserting a PC Card........................................................................................ 1-8 Removing the Battery Pack............................................................................ 1-9 Left Side of the Notebook.............................................................................. 1-9 Connecting the AC Adapter to the Notebook ................................................. 1-10 The Rear Side of the Notebook ...................................................................... 1-10 Connecting an External Keyboard and Mouse ................................................ 1-11 Connecting an External Monitor..................................................................... 1-11

Contents

vii

1-13 1-14 1-15 1-16 3-1 4-1 4-2 4-3 4-4 4-5 4-6 4-7

Connecting to the Printer Port........................................................................ 1-12 Connecting to the Serial Port ......................................................................... 1-12 Bottom View of the Notebook ....................................................................... 1-13 The Boot Setup Menu.................................................................................... 1-14 Functional Block Diagram.............................................................................. 3-2 Hard Disk Drive Module Assembly ................................................................ Floppy Drive Module Assembly ..................................................................... The LED Board Module Assembly................................................................. The System Board and I/O Board................................................................... The I/O Board Module Assembly ................................................................... Power Board Module Assembly ..................................................................... NEC Versa 2500 Series Illustrated Parts Breakdown...................................... 4-5 4-6 4-10 4-11 4-12 4-12 4-15

List of Tables

1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 2-11 2-12

Model Configurations .................................................................................... 1-1 Feature Highlights.......................................................................................... 1-2 Fn Key Combination Summary....................................................................... 1-5 Boot Main Setup Menu.................................................................................. 1-15 Boot Setup Peripherals Menu......................................................................... 1-16 Boot Setup Security Menu ............................................................................. 1-17 Boot Setup Power Savings Menu................................................................... 1-18 16 MB Memory Configurations...................................................................... 1-19 NEC Versa 2500 Series Specifications ........................................................... Product Mix................................................................................................... Main Board Specifications.............................................................................. Transfer Board Specifications......................................................................... Converter Board Specifications ...................................................................... LED Indicator Board Specifications ............................................................... I/O Board Specifications ................................................................................ LCD Inverter Board Specifications................................................................. Status LED Descriptions ................................................................................ Diskette Drive Specifications.......................................................................... Hard Disk Drive Specifications....................................................................... CD-ROM Reader Specifications..................................................................... 2-1 2-6 2-7 2-8 2-8 2-9 2-10 2-12 2-13 2-13 2-14 2-14

viii

Contents

2-13 2-14 2-15 2-16 2-17 2-18 2-19 2-20 2-21 2-22 2-23 2-24 2-25 2-26 2-27 4-1 4-2 5-1 5-2 5-3 5-4 5-5 A-1 A-2 A-3 A-4 A-5 A-6 A-7 A-8 A-9 A-10 A-11 A-12

Battery Specifications..................................................................................... DC/DC Converter & Battery Charger Specifications ...................................... Battery Charger Specifications ....................................................................... Keyboard Specifications................................................................................. AC/DC Adapter Specifications....................................................................... BIOS Specifications ....................................................................................... Micro-Controller Specifications...................................................................... Power Management Modes............................................................................ Mode Definitions ........................................................................................... Hot Keys........................................................................................................ Environmental Specifications.......................................................................... Power Specifications ...................................................................................... Vibration Specifications ................................................................................. Shock Specifications ...................................................................................... Electro-Static Discharge (ESD) Specifications ...............................................

2-14 2-15 2-15 2-16 2-16 2-17 2-18 2-19 2-20 2-21 2-21 2-22 2-22 2-22 2-23

NEC Versa 2500 Series Field-Replaceable Parts............................................. 4-13 Packaging and Documentation Part Numbers ................................................. 4-16 NEC Service and Information Telephone Numbers......................................... POST Error Messages.................................................................................... BIOS Informational Messages........................................................................ Run-time Error Messages............................................................................... Quick Troubleshooting................................................................................... VGA Standard Modes (Text Mode) ............................................................... VGA Standard Modes (Graphics Mode) ........................................................ VGA Standard Modes (Planar Mode) ............................................................ VGA Standard Modes (Packed Pixel Mode) .................................................. VGA Extended Modes (Text Mode) .............................................................. VGA Extended Modes (4-Bit Linear Mode)................................................... VGA Extended Modes (8-Bit Linear Mode)................................................... VGA Extended Modes (15-Bit Linear Mode)................................................. VGA Extended Modes (16-Bit Linear Mode)-1MB Video Memory Only ....... VGA Extended Modes (24-Bit Linear Mode)................................................. VGA Extended Modes (Planar Mode)............................................................ VGA Extended Modes (Packed Pixel Mode).................................................. 5-1 5-4 5-7 5-8 5-9 A-1 A-2 A-2 A-2 A-3 A-3 A-3 A-3 A-4 A-4 A-4 A-4

Contents

ix

A-13 A-14 A-15

VGA High Refresh Modes (Packed Pixel Mode) ............................................ A-5 VGA High Refresh Modes (Planar Mode) ...................................................... A-5 VGA High Refresh Modes (Packed Pixel Mode) ............................................ A-5

(For United States Use Only)

FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFERENCE STATEMENT

!

WARNING

Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

NOTE

This is a Class B Digital Device. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.

However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures.

T T T

Reorient or relocate 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 equipment does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio interference Regulations of the Canadian Department of Communications. Avis de conformité aux normes du ministère des Communications du Canada Cet appareil respecte les limites de bruits radioélectriques applicables aux appareils numériques de Classe B prescrites dans le Règlement sur le brouillage radioélectrique édicté par le ministère des Communications du Canada. European Community Directive Conformance Statement This product is in conformity with the protection requirements of EC Council Directive 89/336/EEC on the approximation of laws of the Member States relating to electro-magnetic compatibility. This product satisfied the Class B limits of EN 55022. NEC Computer Systems Division, Packard Bell NEC, Inc. 1414 Massachusetts Avenue Boxborough, Massachusetts 01719 1-800-632-4525

xiii

Abbreviations
ampere alternating current advanced technology (IBM PC) BBS Bulletin Board System BCD binary-coded decimal BCU BIOS Customized Utility BIOS basic input/output system bit binary digit bpi bits per inch bps bits per second BUU BIOS Upgrade Utility C centigrade Cache high-speed buffer storage CAM constantly addressable memory CAS column address strobe CD-ROM compact disk-ROM CGA Color Graphics Adapter CGB Color Graphics Board CH channel clk clock cm centimeter CMOS complementary metal oxide semiconductor COM communication CONT contrast CPGA ceramic pin grid array CPU central processing unit CRT cathode-ray tube DAC digital-to-analog converter DACK DMA acknowledge DC direct current DIP dual in-line package DLAB Divisor Latch Address bit DMA direct memory access DMAC DMA controller A AC AT DOS DRAM DTE ECC EDS EGA EMS EPP EPROM EVGA F FAX FCC FG FM Fn FRU GB GND HDD HEX HGA Hz IC ID IDE IDTR IMR in. INTA IPB disk operating system dynamic RAM data terminal equipment error checking and correction error detecting system Enhanced Graphics Adapter Expanded Memory Specification enhanced parallel port erasable and programmable ROM Enhanced Video Graphics Array Fahrenheit facsimile transmission Federal Communications Commission frame ground frequency modulation Function field-replaceable unit gigabyte ground hard disk drive hexadecimal Hercules Graphics Adapter hertz integrated circuit identification intelligent device electronics interrupt descriptor table register Interrupt Mask register inch interrupt acknowledge illustrated parts breakdown

xiv

Abbreviations

IRR ISA ISR I/O IPC ips IRQ K k KB kg kHz kV lb LDTR LED LSB LSI M mA max MB MDA MFM Mhz mm ms MSB NASC NC NDP NMI ns NSRC PAL PC

Interrupt Request register Industry Standard Architecture In Service register input/output integrated peripheral controller inches per second interrupt request kilo (1024) kilo (1000) kilobyte kilogram kilohertz kilovolt pound local descriptor table register light-emitting diode least-significant bit large-scale integration mega milliamps maximum megabyte Monochrome Display Adapter modified frequency modulation megahertz millimeter millisecond most-significant bit National Authorized Service Center not connected numeric data processor Non-maskable Interrupt nanosecond National Service Response Center programmable array logic personal computer

printed circuit board plastic flat package parallel input/output picture element plastic J-lead quad flat pack plastic lead chip carrier phase lock loop peak-to-peak programmable peripheral interface PROM programmable ROM QFP quad flat pack RAM random-access memory RAMDAC RAM digital-to-analog 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 SDLC Synchronous Data Link Control SG signal ground SOIC small outline integrated circuit SQFP silver quad flat package SVGA Super Video Graphics Array SW switch TCP Thin chip package TQFP Thin-quad flat package TSC Technical Support Center TTL transistor/transistor logic tpi tracks per inch

PCB PFP PIO pixel PJQFP PLCC PLL p-p PPI

Abbreviations

xv

UART V Vdc VESA VFO VGA VLSI VRAM W µf µPD µs

universal asynchronous receiver/transmitter volt volts, direct current video electronics standards association variable frequency oscillator Video Graphics Array very large-scale integration virtual RAM watt microfarad microprocessor microsecond ohm

Section 1

Introduction
This section focuses on providing outline features and operations of the NEC Versa 2500 Series Notebook Computer, including the BIOS Setup program. (Refer to the User's Guide for more information on operating the notebook.) The NEC Versa 2500 Series of notebooks are lightweight, compact, and fully IBM compatible. The NEC Versa 2500 Series Notebook comes in the following model configuration.
Table 1-1 Model Configuration
NEC Versa 2500 Intel P54CSLM-133 16 MB 1 MB 1.4 GB 12.1" DSTN LCD Type A (3500 mA NiMH)

Configuration CPU On-Board DRAM Video Memory Hard Disk Drive Color LCD Battery Pack

Figure 1-1

NEC Versa 2500 Series Notebook

1-2

Introduction

FEATURE HIGHLIGHTS
The NEC Versa 2500 Series notebook includes a variety of innovative features designed to meet the most demanding computing requirements
Table 1-2
Features CPU Memory Cache RAM Display VGA Description Intel P54CSLM-133 MHz processor with internal 16 KB cache memory and math coprocessor On-board 16 MB RAM, can be upgraded to 48 MB 256 KB, L2 cache 12.1" DSTN VGA Color LCD at 800 x 600 pixels resolution with 256K colors 32-bit Video PCI bus VGA controller/ 1 MB RAM Video Memory / Supports up to 1024 x 768 pixels resolution for external CRT monitor with 256 colors Removable 2.5-inch IDE high capacity hard drive (12.7mm height) Built-in 3.5-inch 1.44 MB floppy disk drive 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 VersaGlide Two slots that support two Type II PC cards at the same time, or one Type III, and one Type II PC cards at the same time 1 x Serial Port (w/ FIFO) / 1 x Printer Port (ECP/EPP) / 1 x VGA Port / 1 x PS/2 keyboard & mouse port Auto-switching AC Adapter (90V - 264V) / Rechargeable NiMH Battery pack / Advanced power management capabilities

Feature Highlights

HDD FDD Keyboard

Pointing Device PC Card Slots I/O Port Power System

Introduction

1-3

SYSTEM CONFIGURATION
The following diagram shows the NEC Versa 2500 Series system configuration.

INTEL P54CSLM(TCP) CPU

Cache RAM L2: 256KB write back

Color LCD (800x600) DSTN

BIOS Flash ROM

VL Bus Controller (VGA)

External VGA Monitor

8 / 16MB RAM On-Board Upgradable to 48MB

NEC VersaGlide

PS/2 Keyboard

and
Bank 1 (Slot 1) 4 / 8 / 16MB DIMM PS/2 Mouse

Keyboard

Serial Interface (RS-232C)

RS-232C Peripheral

Parallel Interface

Printer

Built-in HDD

PCMCIA Card Slot x 2

PCMCIA Card

3.5" FDD

Battery Pack

Figure 1-2

System Configuration Diagram

1-4

Introduction

QUICK TOUR OF THE NOTEBOOK
Take a moment to become familiar with the locations and functions of all controls. It is recommended that you first go through the notebook's user guide for more information on how to operate all of the features.

Main Components
This section describes the main features of the NEC Versa 2500 Series computer.
Color LCD Display Panel

The notebook has a built-in 12.1 inch passive matrix dual scan DSTN color liquid crystal display (LCD) which you can adjust and tilt to your desired viewing position. The LCD provides 800x600 pixel resolution with a maximum of 256 colors, and supports simultaneous display with an external VGA monitor. The LCD screen also uses Cold Cathode Fluorescent Tube (CCFT) backlighting which consumes most of the power from the notebook. To save battery power, the system has an advanced power management feature that powers down the LCD when it has not been used for a predetermined amount of time. You can adjust the brightness and contrast level of the LCD by pressing the "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 application work where you left off. NOTE: Always wait for a few seconds between turning off and turning on the power. On the top of the unit underneath the right hinge is the LCD cover switch button. This button automatically depresses and releases when you lower or raise the LCD display panel. Depending on your power management settings, this button will either switch the notebook to the Suspend mode or will shut off the LCD when you close the cover.
Status Panel and Power Indicator

Directly below the LCD display, in the center near the right hinge, is the Suspend Mode LED displays. These LEDs provide an easy way to determine the current power mode of the unit. Below these two LEDs is a row of seven more. These LEDs light to indicate whether a device is being accessed, whether an operation is being done, or if a certain mode is or has been activated.

Introduction

1-5

Keyboard

The notebook has a built-in 87/88-key keyboard that provides complete emulation of a fullsized IBM AT-enhanced keyboard with function keys and screen/cursor control keys.

Figure 1-3

Standard Keyboard Layout

The notebook keyboard includes an embedded numeric keypad, and some special function keys that are activated by pressing the Fn key together with another key. These special function keys (more popularly known as "hot keys") allow you to control and adjust some of the notebook's functions like; display controls, speaker 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 embedded keys are located. Press the Num Lock key again to disable the embedded keys and resume normal keyboard operation.
Table 1-3
Key Combination Fn key + Esc key Fn key + F8 key Fn key + F10 key Function This key combination puts the system in Suspend mode. This key combination mutes the PC speaker volume. This key combination toggles between video display output to the LCD display, to an external CRT monitor, or to a simultaneous display of LCD and CRT.

Fn Key Combination Summary

1-6

Introduction

Table 1-3
Key Combination Fn key + F11 key Fn key + right key Fn key + left key Fn key + Up key Fn key + Down key Fn key + PgUp key Fn key + PgDn key

Fn Key Combination Summary (cont'd)

Function This key combination toggles the LCD display backlighting (CCFT) on and off. This key combination increases the contrast level. This key combination decrease the contrast level. This key combination increase the brightness incrementally for the LCD. This key combination decreases the brightness incrementally for the LCD. This key combination increases the speaker volume level incrementally. This key combination decreases the speaker volume level incrementally.

The notebook's keyboard also features an embedded editing keypad, which offers an optional method for editing 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 operational, the Num Lock LED will be activated. To return to normal keyboard operation, press the Num Lock key again. When the Num Lock LED glows the embedded numeric key pads are activated.
VersaGlide

In front of the keyboard panel, in the center of the palm rest typing surface, is the VersaGlide pointing device. The buttons below the glide pad are configured (by default) as the left and right button respectively. While the button to the right is configured as the right button on the mouse. Moving the pointer on the screen is done by moving your finger over the surface and directing the pointer where you want it to go.

Figure 1-4

VersaGlide

Introduction

1-7

Memory Slot Compartment

The memory compartment is located just under the keyboard. Inside the compartment are two extra memory module sockets which can accommodate any standard JEDEC 8 MB or 16 MB DIMM modules.

Figure 1-5

Memory Slot Compartment

The Right Side of the Notebook
This section describes the features on the right side of the NEC Versa 2500 computer.
Built-in Disk Drive

The disk drive, which supports 3.5-inch 1.44 MB high density (HD) diskettes or 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 compartment door to view the PC card slots. Insert Type III cards into the lower slot. Insert the card with the pin sockets facing towards the drive and the label facing up. To remove the PC card, push on the eject button to release the pin connections and slowly pull out the card.

1-8

Introduction

The NEC Versa 2500 Series also comes with DOS/Windows PC card drivers for supporting various PC cards like modem cards, network cards, and other I/O and memory cards. The LED Status Bar, likewise, provides lights to indicate when the computer is accessing the inserted PC cards. The upper PC card slot is referred to "Slot 0" while the bottom slot is referred to as "Slot 1". Slot 0 always takes precedence over Slot 1 in drive designations.

Figure 1-6

Inserting a PC Card

Hard Disk Drive Compartment

Just beside the diskette drive, and below the PC slots, is the notebook's internal hard drive. The NEC Versa 2500 Series provides an industry standard 2.5-inch, 1 GB IDE hard disk drive. The system BIOS also includes Auto IDE detection and LBA mode for easy installation 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 computer.
Battery Compartment

The battery compartment is in the left front corner of the notebook. It houses the rechargeable NiMH battery pack. The battery pack begins charging whenever you connect the AC adapter to the notebook. It is very important to always have the battery installed on the notebook and to have it always charged. Leaving the battery pack out of the unit for a long period of time completely drains the battery cells. To remove the battery pack from the compartment unit, push the battery compartment release lock and slowly pull out the battery pack. NOTE: The NEC Versa 2500 Series models uses Type A battery packs with 3500mA.

Introduction

1-9

Figure 1-7

Removing the Battery Pack

Left Side of the Notebook
The following details the left side of the NEC Versa 2500 Series computer.

DC-IN Connector

Reset Switch

Power Switch

Figure 1-8

Left Side of the Notebook

DC-IN Connector Jack

The NEC Versa 2500 series provides a universal auto-switching AC adapter which connects the AC power cord into the power outlet. It is important to have the AC adapter connected 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.

1-10

Introduction

Figure 1-9

Connecting the AC Adapter to the Notebook

Hardware Reset Switch

To the right of the AC adapter connector jack, you will notice a small hole which allows an easy alternative to resetting the notebook's hardware.

The Rear of the Notebook
The following details the rear side of the NEC Versa 2500 Series computer.
IR Port Sound Jacks Ext. K/B and PS/2 Mouse Port

Serial Port Expansion Port Parallel Port VGA Port

Figure 1-10

The Rear Side of the Notebook

External Keyboard and PS/2 Mouse 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. When using DOS or Windows for Workgroups, if a external serial mouse is installed the VersaGlide is not supported.

Introduction

1-11

Figure 1-11

Connecting an External Keyboard and PS/2 Mouse

VGA Port

The 15-pin female VGA connector allows you to connect an external VGA monitor that supports up to 1024x768 pixels resolution. When displaying on an external VGA monitor alone, the VGA port supports resolutions up to 1024x768 at 256 colors. The NEC Versa 2500 Series provides 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 display to the external monitor only in order to display higher resolution. Refer also to Appendix A for a list of supported video modes.

Figure 1-12

Connecting an External Monitor

1-12

Introduction

Printer Port

The 25-pin printer port provides a parallel interface to connect a parallel printer or pocket network adapter. Many operating systems and software applications refer to this port as LPT1. You can run the BIOS Setup program to change the configuration of the parallel port to Standard or Bi-directional.

Figure 1-13

Connecting to the Printer 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 connecting 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 Versa 2500 computer contains the release latches shown in the following figure. Pressing the release latch lets you remove the option installed in the corresponding bay.

Introduction

1-13

Figure 1-15

Bottom View of the Notebook

The following describes the bottom of the NEC Versa 2500 Series computer.
Battery Module Handle and Lock

To release the battery module from its compartment, push 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 fingernail to open this cover (the ROM chip is inside). It is not necessary to remove this cover while performing normal service operations.

1-14

Introduction

SYSTEM BIOS SETUP PROGRAM
This section provides the outline features and operation of the Phoenix BIOS Setup program used in the NEC Versa 2500 Series. The BIOS (Basic Input-Output System) Setup program allows you to change the system configuration settings such as the current date and time, the disk drive and ports settings, and the power management as well. As POST (Power-On Self Test) executes during boot up process, the screen will display the following 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 listed choices window whether you want to load the default values for all fields; save your changes and exit; or exit without saving any changes.

THE BOOT SETUP MENU
The boot setup menu allows you to change the following configurations:

Figure 1-16

The Bootup Setting Menu

Introduction

1-15

Table 1-4
Item System Time Function

Boot Main Setup Menu

This option allows you to change the system time, using the format hour : minute : second. You can change the system time here or from your operating system's command prompt. This option allows you to change the system date, using the format month / day / year. You can change the system date here or from your operating system's command prompt. This option allows you to specify the type of diskette drive mounted inside the notebook. The default setting for this option is 3.5", 1.44 MB disk drive. This option allows you to specify the type of hard drive mounted inside the notebook. Select the Auto option to instruct the BIOS to automatically detect the relevant parameters of the hard drive. Some hard drives, however, do not respond correctly to the values detected. In such cases, you must search and select, from the list, the make and model of the drive being used.

System Date

Diskette A

Hard Disk

Base Memory

This field reports the amount of base (or conventional) memory found by the BIOS during its POST. The value should not exceed or go below 640 KB. 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. This option allows you to configure the computer to which drive it first looks for the operating system. Select A:, CD-ROM (if installed) then C: if you want to boot from a diskette. If there is no diskette found in the floppy drive, the computer then tries to load the operating system from the CD-ROM. If there is no CD-ROM then the computer tries to load the operating system from the hard drive. Select C: then A: if you want to boot from a hard drive. If there is no operating system found in the hard drive the computer tries to load the operating system from a floppy drive. Select C: only if the hard drive already holds an operating system and all necessary startup file configurations.

Extended Memory

Boot Options

SETUP prompt

Setting this to enabled display "Press to Enter SETUP" on boot; Setting to disable suppresses the message, but pressing will still enter SETUP.

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Introduction

Table 1-4
Item POST Errors Function

Boot Main Setup Menu (cont'd)

This options allow the system to pause and display the error message at boot attempt. Selects keyboard options. This option toggles the Num Lock key on or off. This option allows you to select the auto-repeat key speed. Possible values include 2, 6, 10, 13.3, 18.5, 21.8, 26.7, or 30 seconds. This option allows you to select the delay before repeat. Possible values include 1/4, 1/2, 3/4 and 1 second.

Keyboard Features Num Lock Keyboard Repeat Rate Keyboard AutoRepeat Delay

Table 1-5
Item Serial Port Function

Boot Setup Peripherals Menu

This option allows you to configure the notebook's serial port as either (3F8-IRQ4), (2F8-IRQ3), (3E8-IRQ4), (2E8-IRQ3), or disabled. The default setting is (3F8-IRQ4). This option allows you to configure the notebook's infrared serial port as either (3F8-IRQ4), (2F8-IRQ3), (3E8-IRQ4), (2E8-IRQ3), or disabled. The default is (2F8-IRQ3). This option allows you to configure the notebook's parallel port as either (378-IRQ5), (3BC-IRQ7), (278-IRQ5), (378IRQ7), or none. The default is (378-IRQ7). This option allows you to configure the notebook's parallel mode as either Unidirectional, Bi-directional, Enhanced, or ECP. The default is ECP. This option disables the floppy disk controller. This option disables the IDE adapter. This option disables the on-board audio. Changes the default value of 220h to 230h, 240h or 250h. Changes the default value of IRQ5 to IRQ7, IRQ9 or IRQ10. Changes the default value of CH0 to CH1 or CH3. Changes the default value of 300h to 310h, 320h or 330h. This option allows you to enable or disable the game port. Changes the default value of disabled to PAL or NTSC. Select "Yes" if a Plug and Play capable operating system is installed.

Infrared Serial Port

Parallel Port

Parallel Mode

Diskette Controller IDE Adapter On Board Audio I/O Channel IRQ Channel DMA Channel MPU I/O Game Port Display to TV Plug & Play O/S

Introduction

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Table 1-6
Item Password Function

Boot Setup Security Menu

This option allows you to limit access to the computer through the use of a password. If you select this option, a pop-up window appears asking you to set or change the password. A password can be up to seven characters in length, and is cleared by eliminating the password with the F1 key. Note: If you forget the password of the computer, the only way to access the system again is to discharge the CMOS battery. See note below.

Set Password Password on Boot Password on Resume

Press Enter to enter the Password. This option allows you to configure the Password to be enabled at the operating system level. This option allows you to configure the Password to be enabled 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 required to resume. The LED's start flashing again as soon as a key is hit until a password is entered.

NOTE: You can discharge the CMOS battery by simply unplugging the RTC CMOS battery from the connector CN11 of the motherboard. You must wait for 10 minutes before plugging in the battery again.

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Introduction

Table 1-7
Item Power Saving

Boot Setup Power Savings Menu
Function

This option allows you to enable or disable power management. Select Disabled, all other power management settings are ignored and disabled as well. Select Disabled ON AC, the power management is disabled only when the computer is powered by the AC adapter, but will enable the power management while on battery. Select Enabled, the power management is enabled all the time.

Standby Time-out

This option allows you to specify the length of time the system will be in the Idle Mode before entering the Standby mode. Standby Mode places the Serial, infrared and parallel ports, floppy drive, and hard drive into a power saving mode. Possible values include Disabled, 1, 2, 4, 8, or 16 minutes.

Auto Suspend Time-out

This option allows you to specify the length of time the system will be in the Standby mode before entering the Suspend mode. Possible values include Disabled, 1, 2, 4, 8, or 16 minutes. This option allows you to enable Suspend mode. Select Save 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 are in Suspend mode, and the CPU is powered off.

Suspend Mode

Hard Disk Time-out

This option allows you to select a specific time-out value after which power to the hard drive is shut down. Possible values include Disabled, 1, 2, 4, 8, or 16 minutes. When not disabled, the hard drive shuts off after the preset time of inactivity. The hard drive will activate again when the system tries to access it; this may cause a slight delay in the computer's operation as it waits for the hard drive to power up again. Set this option to Disable if you want the hard drive to always be spinning.

Video Time-out

This option allows you to specify a length of time the keyboard and mouse is inactive before the screen is turned off. Possible values include Disabled, 1, 2, 4 ,8, or 16 minutes. Note: If you use "screen saver" software, the Video Monitor should be set to Disabled.

Introduction

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Table 1-7
Item Cover Switch Control

Boot Setup Power Savings Menu (cont'd)
Function

This option allows you to effectively program the type of event which occurs when the display panel is closed. Select SUSPEND, the computer enters the SUSPEND Mode when the LCD Panel is closed. Select Backlight Off, the system powers down the LCD when the LCD Panel is closed.

Serial Port Ring Resume

This option allows you to resume the system if an incoming call is received from the serial port modem. Select Off, the computer does not resume. Select On, the computer resumes. This feature does not apply to PC card port modems.

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 upgrading the system.

MEMORY UPGRADE PROCEDURE
The NEC Versa notebook allows you to install and expand the on-board 16 MB system memory via the memory compartment found under the keyboard. Inside the compartment is an extra memory module socket which can accommodate any standard JEDEC 8 MB and 16 MB DIMM modules. For NEC Versa 2500 Series notebooks, the following memory configurations are applicable:
Table 1-8 16 MB Memory Configurations
Extra Socket empty 8 MB 16 MB 32 MB Total Memory 16 MB 24 MB 32 MB 48 MB

On-Board Memory 16 MB 16 MB 16 MB 16 MB

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Introduction

To upgrade the memory in the notebook, follow these steps.
1. Power off the computer and remove the AC adapter and battery pack. 2. Remove the hinge covers, status bar cover, and the keyboard from the top of the

unit and locate the memory expansion sockets.
3. Remove the extra DIMM module from its anti-static wrapping. 4. Hold the memory module with its golden teeth connector pointed towards the

memory socket. Note: The top socket is connector 0 and should be used when installing only one module. Incline the module at 60 degrees and gently attached it to the memory socket by pushing it forward.
5. Slowly push the module downwards until the locking tabs snap into the retaining

notches or holes at each corner of the module. The bottom socket sits a little in front of the top socket for easier access. However, installation 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 automatically adjusts the memory size. NOTE: If the notebook has been configured for save-to-disk, it may be necessary to run PHDisk to re-partition the drive. The save-to-disk partition must be of a size sufficient to store the content of the whole memory size.

SYSTEM BIOS UPGRADE PROCEDURE
The NEC Versa 2500 Series supports the EPROM Flash BIOS that allows you to easily update the system BIOS using the Flash Programming utility program called "PHLASH.COM & PLATFORM.BIN". Update the system BIOS whenever you are upgrading the LCD Panel or adding modifications to the computer's hardware function. To upgrade the System BIOS:

Introduction

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1. Copy the PHLASH.COM & PLATFORM.BIN BIOS utility program and the BIOS

ROM file to the hard disk subdirectory. You can also choose to run the program from the diskette.
2. Disable EMM386 or other memory manager programs before restarting the computer. 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 " 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 computer to activate the new system BIOS.

Section 2

General Specifications
The following table lists NEC Versa 2500 Series system specifications.
Table 2-1
ITEM CPU System RAM

NEC Versa 2500 Series Specifications

SPECIFICATION Pentium P54CSLM-133 MHz TCP Package 16 MB On-board Upgradeable to 48 MB Memory Modules: 8 MB/16 MB/32 MB 256 KB, L2Cache

RAM Module Slot System Management

Two Slots 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 Support IDE PIO mode up to MODE 4 Support IDE MASTER MODE 1.4 GB

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General Specifications

Table 2-1
ITEM CD-ROM Reader Diskette Drive

NEC Versa 2500 Series Specifications (cont'd)
SPECIFICATION Removable CD-ROM Reader 8x speed Removable Diskette Drive 720KB/1.44 MB Mode Support (Overseas version)

Display

12.1" DSTN Color LCD Module: 800 x 600 in 256 colors External CRT Capability: 640 x 480 in 64K colors 800 x 600 in 64K 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 Extra Windows 95 HotKeys Inverted T Compatible Direction Key Overlapped/Embedded Function and Numeric Keypad Internal and External Keyboard Simultaneous Function

General Specifications

2-3

Table 2-1
ITEM HotKey Operation

NEC Versa 2500 Series Specifications (cont'd)
SPECIFICATION Fn + F8 = PC Beep Mute Fn + Esc = Suspend Control Fn + = Contrast Up Fn + = Contrast Down Fn + = Brightness Up Fn + = Brightness Down Fn + = Decrease Speaker Volume Fn + = 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) Printer Port (LPT1)

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General Specifications

Table 2-1
ITEM Audio

NEC Versa 2500 Series Specifications (cont'd)
SPECIFICATION Support external Stereo Headphone Jack Support external Stereo Line-In Jack Support external MIC. Jack Two Built-in speakers Built in microphone

Status Indicator

LED Display External LED Power On & Battery Low (Blinking) Internal LED Battery 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 Off: 3 hours maximum Heat Dissipation Dimension Optional Items Heat Pipe 297mm (L) x 240mm (W) x 50.8mm (H) External Battery Charger Port Replicator

General Specifications

2-5

Table 2-1
ITEM Key Components

NEC Versa 2500 Series Specifications (cont'd)
SPECIFICATION 12.1" Color DSTN SVGA LCD: EDMGR68KBF (Panasonic) CD-ROM: CDR-38E-900 Hard Disk Drive: 1.4 GB MK1401MAV (Toshiba) Diskette Drive: NEC FD1238H Keyboard: 87/88 Key Full Size (Windows 95) Controller: Mitsubishi M38813M4 VersaGlide: 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 Switch: Micreel MIC2563-1 BIOS: Phoenix IR Chip: TemicTFDS3000 Audio Chip: ESS 1788 Regulor: NS LP2952 RS232 Driver: MAXIM MAX213

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General Specifications

Table 2-1
ITEM

NEC Versa 2500 Series Specifications (cont'd)
SPECIFICATION Flash ROM: AMD AM29F002T PWM Controller: MAXIM MAX797 MOSFET: NS 9410 & 9953 AC Adapter

PRODUCT MIX
The following table lists the NEC Versa 2500 Series product mix.
Table 2-2 Product Mix

Versa 2500) CPU On-Board DRAM Intel Pentium/133 MHz, P54CSLM(TCP) 16 MB 256KB, L2 Cache Video RAM HDD LCD FDD CD-ROM Battery Pack Pointing Device PCMCIA Keyboard EPP/ECP Parallel Serial Port VGA Port PS/2 Port DC-in Jack Audio Port IR Port Expansion Port Power Code 1 MB 1.4 GB 12.1" DSTN LCD Removable 8x Type A 3500mAH NiMH Glide Pad 2 x Type II / 1 x Type III 87/88 Keyboard (Windows 95) Yes Yes Yes Yes Yes Yes Yes Yes Yes
®

General Specifications

2-7

SYSTEM BOARD SPECIFICATIONS
The following table lists system board specifications.
Table 2-3
ITEM Clock CPU Cache DRAM Video RAM System Chipset VGA PCMCIA Internal Connector & Socket

Main Board Specifications

SPECIFICATION NS Clock Buffer CGS74CT 2524 PGA Socket 256KB, L2 1M x 16-bit DRAM x 4 256K x 16-bit DRAM (5V / 60ns), SOJ x 2 UMC UM8891BN, 208 Pin, PQFP UMC UM8892BN, 208 Pin, PQFP C&T 65548, 208 Pin, PQFP Omega 82C094, 208 Pin, TQFP

Omega 82C028, 28 Pin SOIC 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 Printer: 25 Pin Docking: 160 Pin

PCB

Thickness: 1.2mm Layers: 8

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