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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 Corporation (NEC) and/or its licensors. NEC and/or its licen- sors, as appropriate, reserve all patent, copyright and other proprietary rights to this docu- ment, including all design, manufacturing, reproduction, use, and sales rights thereto, except to the extent said rights are expressly granted to others. The NEC product(s) discussed in this document are warranted in accordance with the terms of the Warranty Statement accompany...
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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 Corporation (NEC) and/or its licensors. NEC and/or its licen- sors, as appropriate, reserve all patent, copyright and other proprietary rights to this docu- ment, including all design, manufacturing, reproduction, use, and sales rights thereto, except to the extent said rights are expressly granted to others. The NEC 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 NEC. 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 NEC is prohibited. Versa is a U.S. registered trademark of NEC Technologies, Inc. FastFacts, and NEC SVGA, are U.S. trademarks of NEC Technologies, 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 — September 1996 Copyright 1996 Copyright 1996 NEC Technologies, Inc. NEC Corporation 1414 Massachusetts Avenue 7-1 Shiba 5-Chome, Minato-Ku Boxborough, MA 01719 Tokyo 108-01, Japan All Rights Reserved All Rights Reserved, xi

Preface

This service and reference manual contains the technical information necessary to set up, and maintain the NEC Versa® 2400 Series notebook computer. It also provides hardware and interface information for users who need an overview of the system’s design. The man- ual is written for NEC-trained customer engineers, system analysts, service center person- nel, and dealers. The manual is organized as follows: Section 1 Introduction, provides an overview of the hardware and interface 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 Troubleshooting and Repair, lists technical support phone numbers, error messages and their meanings, and ways to troubleshoot 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 ... 1-5 Keyboard ... 1-5 VersaGlide... 1-7 Memory Slot Compartment... 1-7 The Right Side Of the Notebook ... 1-8 Built-in Floppy Disk Drive ... 1-8 PCMCIA Slot Compartment ... 1-8 Hard Disk Drive Compartment... 1-9 Front of the Notebook ... 1-9 Battery Compartment... 1-9 Left Side of the Notebook... 1-10 DC-IN Connector Jack... 1-10 Hardware Reset Switch... 1-10 The Rear of the Notebook... 1-11 External Keyboard and PS/2 Mouse Port ... 1-11 VGA Port ... 1-12 Printer Port ... 1-13 Serial Port (COM 1)... 1-13 Bottom of the Notebook ... 1-14 Battery Module Handle and Lock... 1-14 ROM Memory Compartment Cover ... 1-14, iv Contents System BIOS Setup Program ... 1-14 The Boot Setup Menu... 1-15 System Upgrades ... 1-19 Memory Upgrade Procedure ... 1-19 System BIOS Upgrade Procedure ... 1-21 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 ... 2-9 I/O Board ... 2-10 LCD Inverter Board... 2-12 LED Status Indicators... 2-13 FDD Specification... 2-13 HDD Unit Specification ... 2-14 NiMH Battery Pack Specification... 2-14 DC/DC Converter & Battery Charger Specification... 2-15 Battery Charger ... 2-15 Keyboard ... 2-16 AC/DC Adapter ... 2-16 BIOS ... 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 Specification... 2-21 Power Source ... 2-22 Vibration ... 2-22 Shock ... 2-23 Electro-static Discharge (ESD) ... 2-23, Contents v Section 3 Hardware Functional Overview Functional Block Diagram... 3-2 System BIOS ... 3-3 System Processor... 3-3 Major Functional Blocks ... 3-3 System Logic Controller ... 3-4 Memory Subsystem... 3-6 DRAM Memory... 3-6 ROM Memory ... 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... 3-10 Floppy Disk Drive Subsystem ... 3-10 Pointing Device Subsystem ... 3-10 Power Subsystem... 3-10 AC Power Adapter ... 3-11 Internal Battery Pack ... 3-11 Powerboard ... 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 Equipment ... 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 Floppy Disk Drive Module ... 4-5 Removing/Replacing the LCD Status Bar Cover and Hinges ... 4-6, vi Contents 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 VersaGlide Assembly... 4-8 Removing/Replacing the LED Board... 4-9 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 NEC Versa 2400 Series 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 List of Figures 1-1 NEC Versa 2400 Series Notebook ... 1-1 1-2 System Configuration Diagram... 1-3 1-3 Standard Keyboard Layout... 1-5 1-4 VersaGlide... 1-7 1-5 Memory Slot Compartment... 1-7 1-6 Inserting a PCMCIA Card... 1-8 1-7 Removing the Battery Pack... 1-9 1-8 Left Side of the Notebook... 1-10, Contents vii 1-9 Connecting the AC Adapter to the Notebook ... 1-10 1-10 The Rear Side of the Notebook ... 1-11 1-11 Connecting External Keyboard and Mouse... 1-11 1-12 Connecting an External Monitor... 1-12 1-13 Connecting to the Printer Port... 1-13 1-14 Connecting to the Serial Port ... 1-13 1-15 The Boot Setup Menu... 1-15 3-1 Functional Block Diagram... 3-2 4-1 Hard Disk Drive Module Assembly ... 4-5 4-2 Floppy Drive Module Assembly ... 4-6 4-3 The LED Board Module Assembly... 4-9 4-4 The System Board Module Assembly ... 4-10 4-5 The I/O Board Module Assembly ... 4-11 4-6 Power Board Module Assembly ... 4-12 4-7 NEC Versa 2400 Series Illustrated Parts Breakdown... 4-15 List of Tables 1-1 Model Configurations ... 1-1 1-2 Feature Highlights... 1-2 1 -3 Fn Key Combination Summary... 1-6 1-4 Boot Main Setup Menu... 1-16 1-5 Boot Setup Peripherals Menu... 1-17 1 -6 Boot Setup Security Menu ... 1-17 1 -7 Boot Setup Power Savings Menu... 1-18 1-8 8 MB Memory Configurations... 1-20 1 -9 16 MB Memory Configurations... 1-20 2 -1 NEC Versa 2400 Series Specifications ... 2-1 2-2 Product Mix... 2-6 2-3 Main Board Specifications... 2-7 2-4 Transfer Board Specifications... 2-8 2-5 Converter Board Specifications ... 2-8 2-6 LED Indicator Board Specifications ... 2-9 2-7 I/O Board Specifications ... 2-10 2 -8 LCD Inverter Board Specifications... 2-12, viii Contents 2-9 Status LED Descriptions ... 2-13 2-10 FDD Specifications ... 2-13 2-11 Hard Disk Drive Specifications... 2-14 2-12 CD-ROM Reader Specifications... 2-14 2-13 Battery Specifications... 2-14 2 -14 DC/DC Converter & Battery Charger ... 2-15 2 -15 Battery Charger Specifications ... 2-15 2-16 Keyboard Specifications... 2-16 2-17 AC/DC Adapter Specifications... 2-16 2 -18 BIOS Specifications ... 2-17 2-19 Micro-Controller Specifications... 2-18 2 -20 Power Management Modes... 2-19 2-21 Mode Definitions ... 2-20 2 -22 Hot Keys... 2-21 2-23 Environmental Specifications... 2-21 2-24 Power Specifications ... 2-22 2 -25 Vibration Specifications ... 2-22 2-26 Shock Specifications ... 2-23 2-27 Electro-static Discharge (ESD) Specifications ... 2-23 4-1 NEC Versa 2400 Series Field-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 5-2 POST Error Messages... 5-5 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 (Packed Pixel Mode) ... A-2 A -5 VGA Extended Modes (Text Mode) ... A-3 A-6 VGA Extended Modes (4-Bit Linear Mode)... A-3 A-7 VGA Extended Modes (8-Bit Linear Mode)... A-3, Contents ix A-8 VGA Extended Modes (15-Bit Linear Mode)... A-3 A-9 VGA Extended Modes (16-Bit Linear Mode) - 1 MB Video Memory Only ... A-4 A -10 VGA Extended Modes (24-Bit Linear Mode)... A-4 A -11 VGA Extended Modes (Planar Mode)... A-4 A-12 VGA Extended Modes (Packed Pixel Mode)... A-4 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, (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 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. 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. Use a shielded and properly grounded I/O cable to ensure compliance of this unit to the specified limits of the rules. (For Canadian Use Only) This equipment is a Class B digital apparatus which complies with the Radio Interference Regulations, C.R.C., c.1374. Cet appareil numérique de la classe B est conforme àu Règlement sur le brouillage radioélectrique, C.R.C., ch.1374., xiii

Abbreviations

A ampere DOS disk operating system AC alternating current D RAM dynamic RAM AT advanced technology DTE data terminal equipment (IBM PC) E CC error checking and correction BBS Bulletin Board System EDS error detecting system BCD binary-coded decimal E GA Enhanced Graphics Adapter BCU BIOS Customized Utility E MS Expanded Memory B IOS basic input/output system Specification bit binary digit EPP enhanced parallel port b pi bits per inch EPROM erasable and programmable bps bits per second ROM BUU BIOS Upgrade Utility E VGA Enhanced Video Graphics C centigrade Array C ache high-speed buffer storage F Fahrenheit C AM constantly addressable memory FAX facsimile transmission CAS column address strobe F CC Federal Communications Commission C D-ROM compact disk-ROMFGframe ground C GA Color Graphics Adapter FM frequency modulation C GB Color Graphics Board Fn FunctionCHchannel F RU field-replaceable unit c lk clock GB gigabytecmcentimeter GND ground C MOS complementary metal oxide semiconductor HDD hard diskdrive C OM communication H EX hexadecimal C ONT contrast HGA Hercules Graphics Adapter CPGA ceramic pin grid array Hz hertz CPU central processing unit IC integrated circuit C RT cathode-ray tube ID identification DAC digital-to-analog converter IDE intelligent device electronics DACK DMA acknowledge IDTR interrupt descriptor table register DC direct current I MR Interrupt Mask register DIP dual in-line package i n. inch DLAB Divisor Latch Address bit INTA interrupt acknowledge DMA direct memory access IPB illustrated parts breakdown DMAC DMA controller, xiv Abbreviations I RR Interrupt Request register PCB printed circuit board I SA Industry Standard Architecture PFP plastic flat package ISR In Service register PIO parallel input/output I/O input/output p ixel picture element IPC integrated peripheral controller P JQFP plastic J-lead quad flat pack ips inches per second P LCC plastic lead chip carrier IRQ interrupt request P LL phase lock loop K kilo (1024) p-p peak-to-peak k kilo (1000) PPI programmable peripheral KB kilobyte interfacekgkilogram P ROM programmable ROM k Hz kilohertz QFP quad flat packkVkilovolt RAM random-access memory lb pound R AMDAC RAM digital-to-analog L DTR local descriptor table register R AS row address strobe LED light-emitting diode RGB red green blue LSB least-significant bit R GBI red green blue intensity L SI large-scale integration ROM read-only memory M mega r pm revolutions per minute mA milliamps R read max maximum RTC real-time clockMBmegabyte R /W read/write M DA Monochrome Display Adapter S slave MFM modified frequency modulation SCSI Small Computer System M hz megahertz Interface mm millimeter SDLC Synchronous Data Link Control ms millisecondSGsignal ground MSB most-significant bit S OIC small outline integrated circuit NASC National Authorized Service Center S QFP silver quad flat packageNCnot connected S VGA Super Video Graphics Array N DP numeric data processorSWswitch N MI Non-maskable Interrupt TCP Thin chip packagensnanosecond TQFP Thin-quad flat package N SRC National Service Response T SC Technical Support Center Center TTL transistor/transistor logic PAL programmable array logic tpi tracks per inchPCpersonal computer, Abbreviations xv U ART universal asynchronous receiver/transmitter V volt Vdc volts, direct current V ESA video electronics standards association VFO variable frequency oscillator VGA Video Graphics Array V LSI very large-scale integration V RAM virtual RAM W wattµfmicrofarad µPD microprocessor µs microsecond Ω ohm,

Section 1 Introduction

This section focuses on providing outline features and operations of the NEC Versa 2400 Notebook Computer Series, including the BIOS Setup program. (Refer to the User’s Guide for more information how to operate the notebook.) The NEC Versa 2400 Series of note- books are lightweight, compact, and fully IBM compatible. The NEC Versa 2400 Notebook Series comes in the following model configurations. Table 1-1 Model Configurations C onfiguration NEC Versa 240X N EC Versa NEC Versa 240XCD* 243XCD* CPU I ntel P54CSLM- I ntel P54CSLM- Intel P54CSLM- 100 100 133 On-Board DRAM 8 MB 8 MB16MB Video Memory 1 MB 1 MB 1 MB Hard Disk Drive 8 10 MB 1 GB 1 GB C olor LCD 11.3” DSTN LCD 1 1.3” DSTN LCD 1 1.3” DSTN LCD B attery Pack A (3500mA NiMH) A (3500mA NiMH) A (3500Ma NiMH) * Models contain built-in CD-ROM readers Figure 1-1 NEC Versa 2400 Series Notebook, 1-2 Introduction FEATURE HIGHLIGHTS The NEC Versa 2400 notebook series includes a variety of innovative features designed to meet the most demanding computing requirements: Table 1-2 Feature Highlights Features D escription CPU I ntel P54CSLM-100MHz (Intel P54CSLM-133MHz for 243X) processor with internal 16KB cache memory and math coprocessor Memory O n-board 8MB RAM (16MB for NEC Versa 243XCD) and can be upgraded to 40MB Display 11.3” DSTN VGA Color LCD at 600 x 800 pixels resolution with 256 colors VGA 32-bit Video PCI bus VGA controller/ 1MB RAM Video Memory / Supports up to 1024 x 768 pixels resolution for external CRT monitor with 256 colors HDD Built-in 2.5-inch IDE high capacity hard drive (12.7mm height) FDD Built-in 3.5-inch 1.44MB 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 Pointing Device VersaGlide PCMCIA Slot Two PCMCIA 2.1 card 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 I /O Port1xSerial Port (w/ FIFO) / 1 x Printer Port (ECP/EPP) / 1 x VGA Port / 1 x PS/2 keyboard & mouse port Power System Auto-switching AC Adapter (90V - 264V) / Rechargeable NiMH Battery pack / Advanced power management capabilities,

Introduction 1-3 SYSTEM CONFIGURATION The following diagram shows the NEC Versa 2400 system configuration.

INTEL Color LCD P54CSLM(TCP) (800x600) CPUDSTNBIOS VL BusController External VGA Flash ROM Monitor (VGA) 8 / 16MB RAM On-Board Glide Pad Upgradable to Pointing Device PS/2 Keyboard48MBand Bank 1 (Slot 1) 4 / 8 / 16MB PS/2 MouseKeyboardDIMMSerial Interface RS-232C (RS-232C) Peripheral Parallel Printer Interface Built-in

HDD

PCMCIA Card Slotx2PCMCIA 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 rec- ommended 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 2400 computer. Color LCD Display Panel Both the NEC Versa 240X and 243X series have a built-in 11.3” 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 col- ors, and supports simultaneous display with an external VGA monitor. The LCD screen also uses Cold Cathode Fluorescent Tube (CCFT) backlighting which con- sumes most of the power from the notebook. To save battery power, the system has an ad- vanced 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 that allows you to continue your application work at the place you last left it before the suspend mode was activated. N OTE: Always wait for a few seconds between turning off and turning on the power. Likewise, check to see if the power switch is turned off before installing the power supply. On the top of the unit underneath the right hinge is the LCD cover switch button. This but- ton 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., Introduction 1-5 N OTE: If the NEC Versa 2400 has been left un- used for a prolonged period of time the battery may become completely discharged. It will then be necessary for you to reconnect the AC adapter for approximately 30 minutes before the battery will begin to recharge normally. 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 of determining what the power mode the unit is in at the moment. Below these two LEDs is a row of seven more. These LEDs will 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. Keyboard The notebook has a built-in 87/88-key keyboard that provides complete emulation of a full- sized 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 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 key. Once the key is pressed the upper blue symbols will become active., 1-6 Introduction NOTE: Activating the Num Lock key will in turn disable the alphanumeric keys where the embedded keys are located. Press the Num Lock key again to disable the embedded keys and re- sume normal keyboard operation. T able 1-3 Fn Key Combination Summary K ey Combina- F unction tion key + This key combination puts the system in Suspend mode. key key + This key combination mutes the speaker volume. key key + This key combination toggles between video display output to the LCD key display, to an external CRT monitor, or to a simultaneous display of LCD and CRT. key + This key combination toggles the LCD display backlighting (CCFT) on key and off. key + This key combination increases the contrast level. key key + This key combination decrease the contrast level. key key + This key combination increase the brightness incrementally for the key LCD. key + This key combination decreases the brightness incrementally for the key LCD. key + This key combination increases the speaker volume level incremen- key tally. key + This key combination decreases the speaker volume level incremen- key tally. The notebook’s keyboard also features an embedded editing keypad, which offers an op- tional 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 op- erational, 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., Introduction 1-7 VersaGlide In front of the keyboard panel, in the center of the palm rest typing surface, is the Versa- Glide 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. The VersaGlide is compatible with the standard PS/2 mouse and can be activated using the normal DOS or Windows IBM or PS/2 mouse driver. Figure 1-4 VersaGlide 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 4MB, 8MB, and 16MB DIMM modules. Figure 1-5 Memory Slot Compartment, 1-8 Introduction The Right Side of the Notebook This section describes the features on the right side of the NEC Versa 2400 computer. Built-in Floppy Disk Drive On the right-front side of the notebook you will find the floppy disk drive which supports 3.5-inch 1.44MB high density (HD) diskettes or 720KB double-sided (DS) diskettes. Insert the floppy diskette with the metal shutter towards the drive and the diskette label facing up. To remove the floppy diskette, you press the eject button found on the upper right of the floppy disk drive. PCMCIA Slot Compartment The PCMCIA slot compartment houses two card slots that support two PCMCIA Type II devices or one Type III device. Open the compartment door to view the PCMCIA slots. In- sert 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 PCMCIA card, push on the eject button to release the pin connections and slowly pull out the card. The NEC Versa 2400 Series also comes with DOS/Windows PCMCIA drivers for support- ing various PCMCIA 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 ac- cessing the inserted PCMCIA cards. The upper PCMCIA 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 PCMCIA Card, Introduction 1-9 Hard Disk Drive Compartment Just beside the floppy disk drive, and below the PCMCIA slots, is the notebook’s internal hard drive. The NEC Versa 2400 provides industry standard 2.5-inch IDE hard disk drive at 810MB and 1GB. The System BIOS of the notebook 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 2400 computer. Battery Compartment In the left front corner of the notebook is the battery compartment. It houses the recharge- able 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, to have it always charged. Leaving the battery pack out of the unit for a long pe- riod of time will completely drain the battery cells. To remove the battery pack from the compartment unit, push the battery compartment re- lease lock and slowly pull out the battery pack. NOTE: There are two types of battery packs for the NEC Versa 2400 Series. The NEC Versa 240X models uses Type A battery packs with 3500mA; while the NEC Versa 243X models uses Type B battery packs with 3500mA. Both battery packs are not interchangeable and may cause damage to the computer if swapped. Figure 1-7 Removing the Battery Pack, 1-10 Introduction Left Side of the Notebook The following details the left side of the NEC Versa 2400. DC-IN Connector Reset Switch Power Switch Figure 1-8 Left Side of the Notebook DC-IN Connector Jack To the left of the PCMCIA compartment, you will find a connector jack for the AC. The NEC Versa 2400 series provides a universal auto-switching AC adapter where you connect the AC power cord and 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 continu- ously. N OTE: Use only the AC adapter that comes with the NEC Versa 2400 notebook. 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., Introduction 1-11 The Rear of the Notebook The following details the rear side of the NEC Versa 2400. Serial Port Ext. K/B and PS/2 Mouse Parallel Port VGA Port 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 2400 also provides a Y-connector adapter allowing simultaneous use of an external AT-enhanced keyboard and a PS/2 mouse. When the external PS/2 mouse is con- nected using the Y-connector, the built-in VersaGlide is disabled. Figure 1-11 Connecting External Keyboard and PS/2 Mouse NOTE: When connecting an external PS/2 mouse, it is required that you power off the computer first before connecting the PS/2 mouse. This way, the system can detect the ex- ternal PS/2 mouse and disable the built-in Ver- saGlide., 1-12 Introduction 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 the external VGA monitor alone, the VGA port can support resolution at 800x600 at 256 colors and 1024x768 at 16 colors for the NEC Versa 2400 and 640x480 at 64K colors, 800x600 at 256 colors, and 1024x768 at 256 colors for both the NEC Versa 2400 and 2430. The NEC Versa 2400 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 key + key combination. NOTE: Even when set to 800x600 or 1024x768 resolution, the external monitor will only show 800x600 resolution if the computer is running at Simultaneous display. You need to toggle the display to the external monitor only in order to display higher resolution. R efer also to Appendix A for a list of supported video modes. Figure 1-12 Connecting an External Monitor, Introduction 1-13 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 (COM 1) 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 N OTE: 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., 1-14 Introduction Bottom of the Notebook The following details the bottom of the NEC Versa 2400. 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 finger- nail to open this cover. Inside is the ROM chip. It is not neccessary to remove this cover while performing normal service operations. SYSTEM BIOS SETUP PROGRAM This section provides the outline features and operation of the Phoenix BIOS Setup pro- gram used in the NEC Versa 2400 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, Introduction 1-15 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 pop-up 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 1-15 The Bootup Setting Menu The boot setup menus let you configure system settings as listed in the following tables., 1-16 Introduction T able 1-4 Boot Main Setup Menu I tem F unction S ystem Time 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. S ystem Date 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. D iskette A This option allows you to specify the type of diskette drive mounted inside the notebook. The default setting for this option is 3.5”, 1.44MB disk drive. HDD LBA Mode T he NEC Versa 2400 supports LBA (logical block addressing) mode which is Enabled automatically for large capacity hard drives over DOS’ limit of 528MB. Hard Disk This option allows you to specify the type of hard drive mounted inside the notebook. S elect 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. B ase Memory T his field reports the amount of base (or conventional) memory found by the BIOS during its POST. The value should not exceed or go below 640KB. 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 2400 series have a minimum of 8MB of memory as the standard configuration, this value should not be less than 3072KB. Boot Sequence T his option allows you to configure the computer to which drive it will first try to look for the operating system. Select A: then C: if you want to boot from a diskette. If there is no diskette found in the floppy drive, the computer will then try 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 will try to load the operating system from a floppy drive. S elect C: only if the hard drive already holds an operating system and all necessary startup file configurations. Num Lock T his option allows you to toggle the Num Lock key on or off. Keyboard Repeat T his option allows you to select the auto-repeat key speed. Rate Possible values include 2, 6, 10, 13.3, 18.5, 21.8, 26.7, or 30 seconds., Introduction 1-17 Table 1-5 Boot Setup Peripherals Menu I tem F unction Serial Port This option allows you to configure the notebook’s serial port as either (3F8-IRQ4), (2F8-IRQ3), (3E8-IRQ4), (2E8-IRQ3), or none. The default setting is (3F8-IRQ4). Infrared Serial Port This option allows you to configure the notebook’s infrared serial port as either (3F8-IRQ4), (2F8-IRQ3), (3E8-IRQ4), (2E8-IRQ3), or none. 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 ECP. Diskette Controller This option allows you to disable the floppy disk controller. IDE Adapter This option allows you to disable the IDE adapter. T able 1-6 Boot Setup Security Menu I tem F unction Password This option allows you to limit access to the computer through the use of a password. If you select this option, a pop-up win- dow will appear 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 Press 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- This option allows you to configure the Password to be en- sume abled when resuming from the suspend mode. The CapsLock and ScrollLock LED’s will flash in sequence for 30 seconds, indicating that the password is required to re- sume. The LED’s will 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., 1-18 Introduction Table 1-7 Boot Setup Power Savings Menu Item Function Power Saving This option allows you to enable or disable power manage- ment. Select Disabled, all other power management settings are ig- nored 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 This option allows you to specify the length of time the system Time-out will be in the Standby Mode before entering the SUSPEND Mode. Possible values include Disabled, 1, 2, 4, 8, or 16 minutes. SUSPEND Mode This option allows you to enable SUSPEND Mode. Select Save to File, the computer will save data to the hard drive. It is important to have a hidden file on the hard drive when enabling this; otherwise an error message will appear on the display screen when the system restarts. Select SUSPEND, the computer will save data to RAM The computer will switch 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., Introduction 1-19 Table 1-7 Boot Setup Power Savings Menu Item Function 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 will shut 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 key- board 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. Cover Switch Con- This option allows you to effectively program the type of event trol 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 will power down the LCD when the LCD Panel is closed. Serial Port Ring Re- This option allows you to resume the system if an incoming sume call is received from the serial port modem. Select Off, the computer will not resume. Select On, the computer will resume. This feature does not apply to PCMCIA 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 48MB. This section provides the settings needed as well as illustrations for upgrad- ing the system. MEMORY UPGRADE PROCEDURE The NEC Versa notebook allows you to install and expand the on-board 8MB 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 4MB, 8MB, and 16MB DIMM modules., 1-20 Introduction For NEC Versa 2400 Series Notebooks, the following memory configurations are applica- ble: Table 1-8 8 MB Memory Configurations O n-Board Memory Extra Socket Total Memory 8 MB empty 8MB 8MB 8MB 16MB 8MB 16MB 2 4MB 8 MB 24MB 3 2MB 8MB 32MB 4 0MB Table 1-9 16 MB Memory Configurations On-Board Memory Extra Socket Total Memory16MB empty 16 MB16MB 8 MB24MB16MB 16 MB 32 MB 16 MB 32 MB 48 MB To upgrade the memory in the notebook, follow the steps mentioned below: 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. Incline the module at 60-degreesand 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. 6. Replace the keyboard, status bar cover, and hinge covers. 7. Reconnect the AC adapter and reattach the battery pack to the computer., Introduction 1-21 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 will automatically adjust the memory size. N OTE: 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 parti- tion must be of a size sufficient to store the con- tent of the whole memory size. SYSTEM BIOS UPGRADE PROCEDURE The NEC Versa 2400 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 up- grading the LCD Panel or adding modifications to the computer’s hardware function. To upgrade the System BIOS: 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 floppy diskette. 2. Disable EMM386 or other memory manager programs before restarting the com- puter. When booting the 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 will then prompt you again before starting to update the system BIOS. After programming is complete, the system will prompt you to reboot the computer to activate the new system BIOS.,

Section 2 General Specifications

The following table lists NEC Versa 2400 Series system specifications. Table 2-1 NEC Versa 2400 Series Specifications ITEM S PECIFICATION C PU P entium P54CSLM-100MHz TCP Package P entium P54CSLM-133MHz T CP Package System RAM 8 MB On-board Upgradeable to 40 MB on 240X model or 48 on 243X model Memory Modules: 8MB/16MB/24MB/32MB RAM Module Slot Two Slots S ystem2M(256K x 8) Flash BIOS: M anagement I ncludes System and VGA Shadow BIOS Capability Power Operation Modes: M anagement Full On Mode Doze Mode S tandby Mode 5V Suspend Mode 0 -volt Suspend Mode Peripheral Automatic Power Down Cover Switch Support, 2-2 General Specifications Table 2-1 NEC Versa 2400 Series Specifications I TEM S PECIFICATION Hard Disk Drive R emovable HDD Module 2.5-inch format / 12.7mm high Enhanced IDE Interface Support IDE PIO mode up to MODE 4 Support IDE MASTER MODE 810MB/1GB CD-ROM R emovable CD-ROM Module6xspeed Floppy Disk Drive R emovable FDD Module 720KB/1.44MB Mode Support (Overseas version) Display 1 1.3” DSTN Color LCD Module: 800 x 600 in 256 colors External CRT Capability: 6 40 x 480 in 64K colors 8 00 x 600 in 64K colors 1 024 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 Standard5VEDO 60NS DRAM 40-Pin SOJ PCMCIA Slots Two Type II slots or one Type III slot PCMCIA Socket compatible with CARD BUS standard P ointing Device G lide Pad P S/2 Interface K eyboard K eyboard Layout: U S Layout - 87 Keys European Layout - 88 Keys, General Specifications 2-3 Table 2-1 NEC Versa 2400 Series Specifications ITEM S PECIFICATION Hot-Key Fn + F8 = Volume Mute OperationFn+ Esc = Suspend Control Fn + = Contrast UpFn+ = Contrast Down Fn + = Brightness Up Fn + = Brightness Down Fn + PgDn = Decrease Speaker Volume Fn + PgUp = Increase Speaker Volume Fn + F10 = CRT/LCD/Simul. F n + F11 = Backlight On/Off I /O Port 2 5-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 S erial Port (COM1) Printer Port (LPT1), 2-4 General Specifications T able 2-1 NEC Versa 2400 Series Specifications ITEM S PECIFICATION A udio S upport external Stereo Headphone Jack Support external Stereo Line-In Jack Support external MIC. Jack Two Built-in speakers B uilt in microphone S tatus Indicator L ED Display External LED P ower ON & Battery Low (Blanking) 5V Suspend Mode (Blanking) I nternal LED Battery Charge PCMCIA A/B Slot - Read / Write HDD / FDD / CDROM - Read / Write P MU - Enable Num Lock - Enable Caps Lock - Enable Scroll Lock - Enable Power SupplyACAdapter 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) B attery Fast Charge (Single Battery Pack) Machine On: 6 hours maximum Machine Off: 3 hours maximum H eat Dissipation Heat Pipe Dimension 2 97mm (L) x 240mm (W) x 50.8mm (H), General Specifications 2-5 Table 2-1 NEC Versa 2400 Series Specifications I TEM S PECIFICATION Optional Items External Battery Charger Port Replicator Key Components 11.3” Color DSTN SVGA LCD: LMG9910ZWCC Hitachi CD-ROM: CDR-N16-P Sanyo, or CD-46E TEAC 8 10MB HDD or 1GB HDD FDD, NEC FD1238H Keyboard: 87/88 Key Full Size (Win95) Controller: Mitsubishi M38813M4 Glide Pad: TM1002S-D Synaptics Battery: Sanyo Ni-MH 1.2V, LA, HR 4 / 3 Audio Amplifier: ROHM BA7786FP Micro Controller: Micro Chip PIC16C62 Clock: Generator: ICS AV9154-43 B uffer: NS CGS74CT2524 & CGS74CT2525 Core Logic: U MC 8891BF-N UMC 8892BF-N U MC 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 A udio Chip: ESS 1788 R egulor: NS LP2952 RS232 Driver: MAXIUM MAX213 Flash ROM: AMD AM29F002T PWM Controller: MAXIUM MAX797, 2-6 General Specifications PRODUCT MIX The following table lists the NEC Versa 2400 Series product mix. Table 2-2 Product Mix 240XD (RT4) 240XCD (RT4CD) 2 43XCD (RT4CD) CPU P entium / 100MHz P entium / 100MHz Pentium / 133MHz P54CSLM(TCP) / P54CSLM(TCP) / P54CSLM(TCP) / Intel Intel Intel O n-Board DRAM 8 MB 8 MB16MB Video RAM 1 MB 1 MB 1 MB HDD 8 10 MB 1 GB 1 GB L CD 1 1.3” DSTN LCD 1 1.3” DSTN LCD 1 1.3” DSTN LCD FDD R emovable Removable Removable CD-ROM N one6X6XBattery Pack T ype A TypeAType A 3500mAH NiMH 3 500mAH NiMH 3 500mAH NiMH Pointing Device G lide Pad G lide Pad G lide Pad P CMCIA2xType II / 1 x Type2xType II / 1 x Type2xType II / 1 x Type III III III Keyboard 8 7/88 Keyboard 87/88 Keyboard 87/88 Keyboard (Win95) (Win95) (Win95) EPP/ECP Parallel Y es Yes Yes Serial Port Y es Yes Yes VGA Port Y es Yes Yes P S/2 Port Y es Yes Yes DC-in Jack Yes Yes Yes A udio Port Y es Yes Yes IR Port Yes Yes Yes Expansion Port Y es Yes Yes Power Code Y es Yes Yes, General Specifications 2-7 SYSTEM BOARD SPECIFICATIONS The following table lists system board specifications. T able 2-3 Main Board Specifications ITEM S PECIFICATION Clock ∗ NS Clock Buffer CGS74CT 2524 CPU ∗ PGA Socket DRAM ∗ 1M x 16-bit DRAMx4Video RAM ∗ 256K x 16-bit DRAM (5V / 60ns), SOJx2System 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 To System PCB: Connector & 100 Pin, AMP Socket To HDD: 50 Pin, KEL To CDROM: 40 Pin, KEL 2 Pin, Molex To Transfer PCB: 2 Pin, Molex To DC Converter 32 Pin, Suyin E xternal COM1: Connector 9 Pin, Suyin Printer: 25 Pin Docking: 160 Pin P CB Thickness: 1.2mm L ayers: 8, 2-8 General Specifications TRANSFER BOARD SPECIFICATIONS The following table lists Transfer board specifications. T able 2-4 Transfer Board Specifications ITEM S PECIFICATION Internal ConnectorToFDD: 100 Pin, AMP To second battery 100Pin, AMP P CB Thickness: 1.2mm Layers: 4 CONVERTER BOARD SPECIFICATIONS The following table lists Converter board specifications. Table 2-5 Converter Board Specifications ITEM ∗ SPECIFICATION I nternal ConnectorToI/O PCB: 32 Pin, SuyinTo1st Battery: 10 Pin, Suyin External Connector To Y-Cable Connector: 32 Pin, Suyin To AC Adapter 2 Pin PCB Thickness 1.2mm Layers: 6, General Specifications 2-9 LED INDICATOR BOARD The following table lists LED indicator board specifications. Table 2-6 LED Indicator Board Specifications ITEM S PECIFICATION Internal ConnectorToSystem PCB50Pin, Suyin To System PCB40Pin, Suyin To LCD Panel50Pin, KEL To Inverter 8 Pin, Molex To Left Speaker 2 Pin, MolexToRight Speaker 2 Pin, Molex E xternal Connector To Headphone 5 Pin, Suyin To Line-In 5 Pin, Suyin To LCD Panel41Pin, KELToIR 8 Pin, Temic To USB 4 Pin, AMP, 2-10 General Specifications I/O BOARD The following table lists I/O board specifications. Table 2-7 I/O Board Specifications ITEM S PECIFICATIONS C lock C rystal 14.318MHz, DIP Type Crystal 32.768KHz, DIP Type Crystal 4MHz, DIP Type G enerator: A V9154-43, SOP 16 Pin R OM Flash ROM for BIOS 2 56K x 8, 150ns System Chip Set UMC UM8886BN, 208 Pin, PQFP S uper I/O N S87336, 100 Pin, PQFP K eyboard Controller Mitsubishi 38813M4, 64 Pin, QFP Micro Controller P IC16C62, 28 Pin, SOIC RCT Battery V ARTA 60mA, 3.6V NiMH Battery Audio E S17888 Sound Chip, 100 Pin, PQFP Amplifier R OHM BA77786FS, 25 Pin, SOIC, General Specifications 2-11 Table 2-7 I/O Board Specifications ITEM S PECIFICATIONS Internal ConnectorToSystem PCB 1 00 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, SuyinToDC Converter 32 Pin, Suyin External Connector COM1 9 Pin, Suyin P rinter25Pin, Suyin Docking 160 Pin, Berg PCB Thickness: 1.2 mm Layers: 6, 2-12 General Specifications LCD INVERTER BOARD The following table lists LCD inverter board specifications. Table 2-8 LCD Inverter Board Specifications ITEM S pecification C olor Inverter H itachi 11.3” DSTN LMG9910ZWCC Input Voltage 8V to 20V Output Voltage 5 00VAC Max. C ontrast Voltage 28V ~ 31V Output Load Current 6 mA (Max.) B rightness ControlVRType (Lower) C ontrast Control VR Type (Upper) Efficiency 70% Min. Unit Size (LxWxH) 146 (L) x 22.5(W) x 9.5 (H), General Specifications 2-13 LED STATUS INDICATORS The following table lists NEC Versa 2400 Series LEDs. For example, the AC IN LED lights to indicate power is on and that the battery is charging. T able 2-9 Status LED Descriptions I TEM L ED P MU Enabled HDD Read / Write P CMCIA Slots Num Lock C aps Lock Scroll Lock FDD SPECIFICATION The following table lists the standard diskette drive specifications. Table 2-10 FDD Specifications I TEM Specification Module 3 .5” Module Mode 2 Mode FDD (1.44MB / 720KB) Unit Size 1 10mm (L) x 96mm (W) x 12.7mm (H), 2-14 General Specifications HDD UNIT SPECIFICATION The following table lists the standard hard drive specifications. T able 2-11 Hard Disk Drive Specifications I TEM S PECIFICATION M odule 2 .5” Removable HDD Module Capacity 8 10MB / 1 GB I nterface E nhanced IDE Interface Unit Size 1 00mm (L) x 70mm (W) x 12.7mm (H) CD-ROM SPECIFICATION The following table lists the standard CD-ROM reader specifications. Table 2-12 CD-ROM Reader Specifications ITEM S PECIFICATION M odule6XCD-ROM Mode I DE Interface D ata Transfer 1 3.3MB/sec Unit Size 1 40.5mm (L) X 130.6mm (W) X 17.0mm (H) NIMH BATTERY PACK SPECIFICATION The following table lists the standard battery specifications. T able 2-13 Battery Specifications I TEM S PECIFICATIONS Capacity 3 500 mA x 10 cells C ell Type L ong A Voltage 1 2V Connector 10-Pin, General Specifications 2-15 DC/DC CONVERTER & BATTERY CHARGER SPECIFICATION The following table lists DC/DC converter & battery charger specifications. Table 2-14 DC/DC Converter & Battery Charger I TEM SPECIFICATION Input Voltage 9V -> 20V O utput Voltage 1 2V, 5V, 3.3V O utput Current 0 .1A, 2.5A, 2.5A Output Ripple 150mV, 100mV, 100mV Voltage Protection S hort Circuit Protection, OCP Input under voltage latch Efficiency 8 0% Min. (Typ.) PCB 1.2mm / 6 Layers BATTERY CHARGER The following table lists battery charger specifications. T able 2-15 Battery Charger Specifications I TEM S PECIFICATION Input Voltage 20V (Max.) Support Battery N iMH Battery (12V) Protection M ax. Temp., Max. Timer Charge Method oD elta T / Delta t: 1 C (min.) Max. Temperature o o53C~ 60 C Timer Setting 360 Min. Charge Time M achine On: 6 hours Machine Off: 1.5 hours Charge IC BQ2014 Connector To M/B: 10 Pin & 18 Pin, Male, Straight, DIP/SMT, 2-16 General Specifications

KEYBOARD

The following table lists keybord specifications. T able 2-16 Keybord Specifications I TEM S PECIFICATION Key Switch Type M embrane Key Stroke 3.0 ± 0.5mm Operating Force 50 ± 20GF K ey Pitch 1 9.05mm AC/DC ADAPTER The following table lists AC/DC adapter specifications. Table 2-17 AC/DC Adapter Specifications I TEM S PECIFICATION I nput Voltage AC 90V -> 265V, 50 -> 63Hz Ripple Noise 1 00mvp-P Output Voltage 2 0V Max. P rotection S hort Circuit UVP, OVPACCord Safety Approval, FCC Shielding AC cord DC Output Cable 2 -pin, 100cm long with coil at system end IndicatorACPower On U nit Size 1 20mm (L) x 62mm (W) x 36mm (H), General Specifications 2-17

BIOS The following table lists BIOS specifications.

Table 2-18 BIOS Specifications ITEM S pecification Floppy Disk Drive S upport standard 3.5” FDD Support 720KB and 1.44MB Modes Hard Disk Drive S upport Standard IDE Hard Disk A uto-detect IDE Features S upport LBA mode for larger capacity VGA Display U se Chips OC65548 VGA BIOS to support Monitor Sense or Auto Display P CI Super VGA Function Call 8 Sets Built-In Panel Parameters Serial Port S upport Standard COM Port Address with optional selection on Setup Menu S upport for IR communication port P arallel Port Support EPP, ECP, and Standard Printer Port Address Provide Optional Item in Parallel Port on Setup Menu S hadow & Cache Always enable VGA and System BIOS Shadow PCMCIA P hoenix PCM Plus will be provided PCMCIA 2.1 Spec Compliance E xternal Device Interface of external PS/2 mouse and external keyboard Support T he internal Glide Pad will be disabled while external PS/2 mouse is connected CD-ROM C an save power during Suspend Mode A PM S upports APM 1.1 Specification Power Management Full On Mode Support Doze Mode Standby Mode Suspend Mode (Suspend to RAM) S ave to Disk System Off Mode V GA Display B oot on simultaneous display while external monitor attached, 2-18 General Specifications Table 2-18 BIOS Specifications ITEM S pecification Suspend (To RAM) STR can be invoked by Hot-Key, Cover-Switch, Battery Low-Low Condition, & Operating System request STR can be resumed by Keyboard && Power Button S ave To Disk S TD can be invoked by Hot-Key, Cover-Switch, Battery Low-Low condition & Operating System request S TD can be resumed by Power Button only. MICRO-CONTROLLER FUNCTION DESCRIPTION The following table lists Micro-Controller specifications. T able 2-19 Micro-Controller Specifications ITEM S PECIFICATION Keyboard TypeUSKeyboard: 87 Keys E uropean Keyboard: 88 Keys Support WIN95 extra 3 Keys E xternal Device I nternal and External Keyboard can be used simultaneously. Support I nternal Glide Pad and External PS/2 Mouse can be used Simultaneously Y -Connector Support External PS/2 Mouse and External Keyboard can be used L ED Connector Num Lock, Caps Lock & Scroll Lock Status should be kept during Suspend Process. All the above should be cleared while Power On S upport AC-IN, Battery-Charging, Battery-Low, Suspend-To-RAM Status LED System Peripheral S upport the Audio/Contrast/Brightness control Control Support the Backlight control SMI Signal Edge Trigger (High Active) Activity Events Hot-Key Press B attery Low & Battery Low-Low Cover Switch => E nter into Suspend Mode or Turn off Backlight via CMOS SETUP, General Specifications 2-19 POWER MANAGEMENT FEATURES (MODE DEFINITION) The following table lists power management specifications. Table 2-20 Power Management Modes M ode Device Speed F ull-On Mode CPU State Full speed Peripherals State Normal D oze Mode Timer On / Off CPU State Stop Grant State DRAM State S low Refresh P eripherals State N ormal Activity Events Video Monitoring, Keystrokes, FDD, HDD, Com1, Com2, Lpt2, Audio Standby Mode Timer Off/1/2/4/8/16 Min. C PU State Stop Clock D RAM State Slow Refresh VGA State S tandby A udio State Power Down AMP Circuit P ower Down HDD State P ower Down LCD state B acklight Off, Negative Volt. Off V ideo Monitoring, Keystrokes, A ctivity Events FDD, HDD, Com1,Com2, Lpt1, Audio Suspend To RAM T imer O ff/1/2/4/8/16 Min C PU State Stop Clock DRAM State Slow Refresh L CD State Backlight off, Negative Volt. Off Power Down VGA, HDD, I/O Chip, PCMCIA, Audio, AMP Circuit, KBC, Clock Generator UM8890BN Power-On Group K eyboard, Power, Com1, A ctivity Events Fax/Modem, PCMCIA Ring, 2-20 General Specifications T able 2-20 Power Management Modes Mode Device Speed S uspend To Disk T imer O ff/1/2/4/8/16 Min CPU State O ff Power System O ff P ower-On Group M icro-Controller Activity Events P ower Switch Battery Low CPU State CPU Clock/2 Condition LCD State Backlight On (Lower 25%) B attery Low / Low CPU State Off Condition System Power 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-OnX1X2Doze3X45Sleep6XX7Suspend8XXXOcurrent Condition: 1. Doze Mode Time-Out 2. APM CPU-Idle 3. APM Power Management Event: System Suspend Request Notification 4. Battery Low - Low Condition 5. Suspend Events Occurs 6. Fully-On Activity Events Occur 7. Sleep Mode Time-Out 8. Sleep Timer Disabled and Suspend Mode Time-Out 9. Battery Low - Low Condition, General Specifications 2-21 10. Fully-On Activity Events Occur 11. Suspend Mode Time-Out 12. Battery Low - Low Condition 13. Resume Events Occur HOT KEY DEFINITION The following table lists hot key definitions. Table 2-22 Hot Keys F UNCTION KEY CONTENT + S uspend + LCD/CRT/SIMUL. Display + Panel Backlight On/Off + Sound Mute + C ontrast Up + Contrast Down + S peaker Volume Increases + S peaker Volume Decreases + B rightness Increases < Fn> + Brightness Decreases N umeric Lock ENVIRONMENTAL SPECIFICATION The following table lists appropriate operating temperatures. Table 2-23 Environmental Specifications ITEM S PECIFICATION Operating Mode o o∗ 5 C ~ 35 C (80%) Non-Operating o o∗ -20 C ~ 60 C (90%), 2-22 General Specifications POWER SOURCE The following table lists system power specifications. Table 2-24 Power Specifications Input Nominal Version AC Voltage 1 00 ~ 250V90~ 265VACFrequency 50 / 60 Hz47~ 63 Hz

VIBRATION

The following table lists vibration specifications. T able 2-25 Vibration Specifications ITEM M ODE Operating Mode Direction of Movement: X, Y, Z Axis V ibration Level: 5 ~ 500 ~ 5 Hz, 0.5 Gs Acceleration Duration Time: 60 min. for each axis N on-Operating Direction of Movement: X, Y, Z Axis Vibration Level: 5 ~ 500 ~ 5 Hz 2 Gs Acceleration D uration Time: 60 min. for each axis, General Specifications 2-23

SHOCK

The following table lists system shock specifications. T able 2-26 Shock Specifications I TEM M ODE Operating Mode Impact Accelerator: 1g/10g Based on Half Sine-Wave Shock Pulses of 11Msec N umber of Shock: 3 Shocks for each of the 6 faces Direction of movement: 6 Faces Non-Operating Mode Impact Accelerator: 10g, 20g, 30g, 40g, 50g Based on Half Sine- Wave Shock Pulses of 11Msec N umber of Shock: 3 Shocks for each of the 6 faces Direction of Movement: 6 Faces ELECTRO-STATIC DISCHARGE (ESD) The following table lists static discharge specifications. Table 2-27 Electro-static Discharge Specifications I TEM S PECIFICATION Contact Discharge ±2, 4, 8, 12.5, 15 kV Air Discharge ± 2, 4, 15 kV H CP ± 2, 4 kV V CP ±2, 4 kV,

Section 3 Hardware Functional Overview

The NEC Versa 2400 Series notebooks consist of several major functions and subsystems including: system BIOS - implemented on the system board and EPROM system processor - implemented on the system board system logic controller - implemented on the I/O Board memory subsystem - implemented on the system board video subsystem - implemented on the I/O board, LED board, and LCD display panel I/O subsystem - implemented 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 assembly hard disk subsystem - implemented on the system board and the hard drive as- sembly floppy disk subsystem - implemented on the system board and the floppy drive power subsystem - implemented on the power supply board, inverter board, bat- tery packs, and AC adapter A simplified block diagram of the notebook is shown on the next page., 3-2 Hardware Functional Overview

FUNCTIONAL BLOCK DIAGRAM The following figure shows the NEC Versa 2400 Series functional diagram.

FLASH BIOS 256KB PCMCIA CARD 0 Bank 0 OMEGA 8MB 82C094 CARD 1 (on-board) CORE CHIP GLIDE PAD Bank1UMCKB 8, 16MB UM8891BF-N, CONTROLLER (DIMM) UM8892BF-N, MITSUBISHI EXT. KB/MOUSE UM8886BF-N M38813M4 INTERNAL KB Pentium P54CSLM- 100MHz COM1

PRINTER

VGA CHIP VIDEO RAM SUPER I /O C&T 65548 1MB NS PC87336VLJHDD

FDD

LCM CRT ON

INVERTER

AC +3.45V ADAPTER DC/DC +5V 66MHz CONVERTER +12V 14.318MHz X'TAL CLOCK GEN 24MHz

ICS

AV9154-43 14.318MHz BATTERY IN DC-IN

Figure 3-1 Functional Block Diagram

, Hardware Functional Overview 3-3 SYSTEM BIOS In AT-compatible systems, configuration data must be stored somewhere when the com- puter is turned off. This data is usually stored in the CMOS RAM. Unlike the DRAM, used for system memory, the CMOS RAM requires very little power. When the computer is turned off, a back-up battery powers the CMOS RAM, which retains the system parame- ters. The computer is configured with the values stored in the CMOS RAM by the system BIOS, which gains control when the computer is powered on. The primary function of the system BIOS (Basic Input-Output System) is to provide a se- ries of software interrupts, functions, and sub-functions that control operations on certain devices, such as the hard disk drive, the floppy drive, and the video subsystem. The NEC Versa 2400 Series uses the Phoenix BIOS. The BIOS SETUP program is an easy-to-use system utility configuration that sets system parameters and copies them on the EPROM chip with the system BIOS. The EPROM chip also includes BIOS Power-On Self Test (POST) diagnostic and booting codes that tests the system components, initializes certain data structures, and boots the op- erating system. System Processor The system processor function for the notebook is implemented on the system board using an Intel P54LM-100MHz Processor Chip. The processor operates in conjunction with the RAM and ROM memory plus other system control logic (e.g. UMC 8486F) to process software instructions (BIOS, Windows, applications). The Intel P54CSLM microprocessor is a high performance 586-class CPU which is com- patible with all the popular x86 operating systems including DOS, Windows, Windows NT, Windows 95, Unix, Novell, and OS/2. The super pipelined 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 systems like notebook computers. Aside from operating at 3.45V only, the CPU clock can also be completely stopped. Moreover, the CPU automatically powers down the FPU and other internal circuits when not in use. Fast entry and exit from the SMM mode allows frequent use of the SMM feature without noticeable performance degradation. Major Functional Blocks The Intel P54CSLM, in a 320-pin TCP packaging, is divided into five major functional blocks: Integer Unit Floating Point Unit, 3-4 Hardware Functional Overview Cache Unit Memory Management Unit Bus Interface Unit Instructions are executed in the Integer Unit pipeline and in the Floating Point Unit (FPU). The Cache Unit stores the most recently used data and instructions and provides fast access to this information for the Integer and Floating Point Units. When external memory access is required, the physical address is calculated by the Memory Management Unit and then passed to the Bus Interface Unit (BIU). The BIU provides the interface between the external system board and the processor’s internal execution and cache units. SYSTEM LOGIC CONTROLLER The System Logic Controller function for the notebook is implemented on the system board using UMC 8890 Series Notebook Chipset. The UM8890 is an advanced 586 compatible single chip specially 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 Boot block erase protection Supports general purpose I/O Hybrid Voltage 208 Pins QFP Integration - Built-in 206 Built-in 146818A Built-in Memory Controller, Hardware Functional Overview 3-5 Memory Controller - Supports ROM DOS up to 64MB by XIP, 16MB by EMS Supports Shadow RAM from C0000-FFFFF Supports SLOW and SELF Refresh DRAM Supports Stagger Refresh On-board memory up to 48MB Supports Three Memory Banks Supports Page Mode/Burst mode operation Supports 512KBx8, 1Mx4, 1Mx16, 2Mx8 and 4Mx4 type DRAM Supports 8 or 16 bit ROM configuration Programmable DRAM timing for each bank 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 Key Auto-Wake Up Function Three Low Battery Monitor Input System Operating Voltage from 3V to 5.5V Low Power Consumption (at 3.3V), 3-6 Hardware Functional Overview MEMORY SUBSYSTEM The memory subsystem, implemented on the system board, includes ROM and DRAM memory. Primary control for the memory subsystem is provided by the UMC 8890 System Controller chipset. DRAM Memory The NEC Versa 240X notebooks contain 8MB (16MB for NEC Versa 243X) of 70ns page-interleaved DRAM on the System board. The notebook provides one extra memory slot for upgrading the DRAM memory to 8MB, 16MB, 24MB, 32MB, 40MB, & 48MB for the NEC Versa 2400 Series) using standard JEDEC small-outline DIMM memory modules. (Refer to Chapter 1 on System Upgrades to know more about how to upgrade the system memory). ROM Memory The NEC Versa 2400 Series notebooks contains both the main system BIOS and the VGA BIOS with Shadow BIOS capability. I/O 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 with IBM AT architecture Supports up to two 360K, 720K, 1.2M, or 1.44MB floppy disk drives Supports IBM PC/AT interface to IDE (Intelligent Drive Electronics)-type Win- chester drives Hardware or software configuration Address decoding and strobe generator for game port Supports two serial port functions Supports one bi-directional IBM PS/2 compatible parallel port function All functions can be enabled or disabled individually Configuration Register can be easily selected Only one 24MHz crystal needed 100-pin plastic flat package, Hardware Functional Overview 3-7 VIDEO SUBSYSTEM The video subsystem, implemented on the system board and on the LCD Panel, controls the display output to both the LED Panel and to the external VGA port. The video subsystem utilizes the C&T 65548 High Performance Flat Panel / CRT VGA Controller. It also includes 1MB DRAM memory, 32-bit DRAM bus, and separate display and memory clocks. An additional frame buffer/accelerator DRAM increases the available memory bandwidth for CPU accesses. Video Chipset Controller The C&T 65548 initiates a family of 208-pin, high performance for the full-featured note- book that requires the highest graphics performance available. The 65548 achieves superior performance through direct connection to system processor buses 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 (GUIs) such as Microsoft Windows. Features Summary: Highly integrated design (flat panel/CRT VGA controller, RAMDAC, clock syn- thesizer) Multiple Bus Architecture Integrated Interface Local Bus (32-bit CPU Direct and VL) EISA/ISA (PC/AT) Bus PCI Bus Flexible display memory configurations Two 256Kx16 DRAMs (1MB) Integrated programmable linear address feature accelerates GUI performance Hardware windows acceleration (65548) 32-bit graphics engine System-to-screen and screen-to-screen BitBlt 3 operand ROP’s Color expansion Optimized for Windows BitBlt format, 3-8 Hardware Functional Overview Hardware line drawing 64x64x2 hardware cursor High performance resulting from zero wait-state writes (write buffer) and mini- mum wait-state reads (internal asynchronous FIFO design) Supports panel resolutions up to 800x600 Supports non-interlaced CRT monitors with resolutions up to 1024x768 at 256 colors True-color and Hi-color display capability with flat panels and CRT monitors up to 800x600 resolution Advanced power management features minimize power consumption during: Normal operation Standby (Sleep) modes Panel-Off Power-Saving Mode Power Sequencing control outputs regulate application of Bias voltage, +5V to the panel and +12V to the inverter for backlight operation Fully compatible with IBM VGA EIAJ-standard 208-pin plastic flat pack External VGA Capability The NEC Versa 2400 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 2400 series with 1MB video memory. The NEC Versa 2400 Series can also provide simultaneous display at 800x600 at 256 colors with the standard VGA DSTN LCD. KEYBOARD SUBSYSTEM The Keyboard Subsystem of the notebook is implemented on the I/O Board and Keyboard Assembly using the Motorola G10 LapKat keyboard controller chip. The NEC Versa 2400 Series keyboard is an 87/88-key, IBM enhanced-type keyboard with standard characters and function keys plus 12 programmable function keys and the Special Function (Fn) key. The notebook also provides an external PS/2 port for supporting an ex- ternal PS/2 keyboard or standard DIN-type AT-keyboard. See Section 1 for more informa- tion., Hardware Functional Overview 3-9 PCMCIA CONTROLLER AND SOCKETS The PCMCIA controller is implemented on the system board using Omega’s 82C094 Inter- face Controller. The 82C094 is compatible with the Intel i882092AA PCI to PCMCIA controller chip. It supports two independent 68 pins PC card sockets and is register com- patible with Intel’s 82365SL. The NEC Versa 2400 Series notebook incorporates PCMCIA double deck slots that sup- ports insertion of two Type I or II cards at the same time or one Type III card on the upper slot and one Type I or II card on the bottom slot. Feature summary of the Omega 82C094: PC Card 95, PCMCIA 2.1, and JEIDA 4.1 compatible Interface Power Management Function that includes Individual Socket power control, Hot insertion/removal, Hardware/Software controlled power down, Modem Ring in Resume, CS Controlled Power Down, and Power Saving with Windows inactivity Direct connection to 33MHz PCI 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 socket activity counter Four-level FIFO and programmable PCMCIA interface timing Five programmable memory windows and two programmable I/O windows per socket Intel EXCA register compatible Register-set compatible to Intel i82092AA (PPEC) and Intel i82365SL 208 Pin PQFP or TQFP, 3-10 Hardware Functional Overview HARD DISK SUBSYSTEM The hard disk subsystem, implemented on the system board and on the associated built-in hard disk drive, provides disk storage for all system software and user files. The NEC Versa 2400 Series notebook is equipped with high capacity hard disk drive rang- ing from 810MB to 1.4GB using the IDE controller with LBA (Logical Block Addressing) mode support. The I/O subsystem controller, NS PC87336CLJ, provides the IDE controller for the hard disk. The built-in hard drive can support any industry standard 2.5-inch IDE hard disk drive at 19mm or 17mm height. Setting up the hard disk type is done automatically by the CMOS SETUP programs that auto-detects the installed hard disk type settings for optimized per- formance. N OTE: Do not move the notebook when the HDD LED is activated. This protects the hard disk drive from any accidental damage or loss of data. FLOPPY DISK DRIVE SUBSYSTEM The Floppy Disk Drive Subsystem consists of a FDD controller provided by SMC 37C665IR and the built-in floppy disk drive. The floppy disk drive supports standard 3.5-inch 720KB and 1.44MB mini-diskettes. 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 Motherboard. 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 disables the internal VersaGlide. POWER SUBSYSTEM The Power Subsystem consists of the following major sections: External AC Power Adapter Internal Battery Pack Powerboard (on Motherboard) LCD Inverter Board (in LCD Panel Assembly) Power Conservation Logic (part of Motherboard), Hardware Functional Overview 3-11 AC Power Adapter The computer is equipped with a universal AC power adapter that converts AC voltage (90 to 265VAC, 47 to 63Hz) into DC voltage used to operate the notebook and charge the batteries. Internal Battery Pack The NEC Versa 2400 Series notebooks utilizes NiMH (Nickel Metal-Hydride) that pro- vides DC power for the notebook (and for the NVRAM and real time clock battery on the Motherboard) when the AC Adapter is not connected to the computer. The battery pack contains ten size A battery cells that provide the system with 12V. When installed in the notebook, the battery LED automatically appears and will also start to re- charge whenever the AC adapter is connected to the notebook. Normal charging time for the battery pack is around 1.5 hours when the computer is turned off 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 assembly. Refer to Chapter 2 for more detailed information. LCD Inverter Board Assembly The LCD Inverter Board Assembly, located in the LCD Panel Assembly, converts the +5VDC input from the Powerboard module of the system board into a high voltage AC output used to light the CCFT (Cold-Cathode Fluorescent Tube).,

Section 4 Field Service Guidelines

This section contains preventive and corrective maintenance procedures for the NEC Versa 2400 Series notebook computers. The first part of this section will describe the computer cleaning procedures and preferred handling procedures for sensitive components (i.e. disk drives, batteries). The second part of this section will identify all field replaceable parts plus the removal and replacement procedures for these parts. PREVENTIVE MAINTENANCE Preventive maintenance is limited to cleaning the plastic case, the keyboard, the display screen, and the floppy drive heads as required. NOTE: Remove the battery and disconnect the AC adapter before performing any maintenance. Voltage will still be present inside the system 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 clean the LCD indicator panel. Apply the glass cleaner directly to the cloth and then wipe the LCD indica- tor panel. Do not use solvents or strong, abrasive cleaners on any part of the sys- tem. 3. Clean the keys with a damp cloth. A small, soft-bristle brush may be used to clean between the keys. Make sure to use a damp cloth (not wet) to prevent moisture from seeping between the keyboard and the metal plate, this could possibly dam- age the components under the keys. If the keyboard gets wet, thoroughly dry it before reassembling the system unit., 4-2 Field Service Guidelines Cleaning the Notebook’s Interior When servicing the inside of the notebook to remove dust and other foreign particles pro- ceed as follows: 1. Remove the top cover, hinge covers, status bar, and keyboard using the disas- sembly procedures discussed later. 2. Dust or vacuum (with a rubber-tipped nozzle) the inside of the system unit, par- ticularly the system board surface. Use care to avoid damaging or dislodging any components or cables. 3. Inspect all cable connectors for damage. Ensure that all connectors are seated properly before replacing the cover. Protecting the Disk Drives To protect the disk drives and data, we recommend that you back up the system disk peri- odically on floppy diskettes. Occasionally use a head-cleaning diskette in the floppy disk drive to prolong the life of the drive and to help maintain data integrity. Here are some preventive maintenance tips that we recommend you 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 computer while the hard disk is being accessed, impor- tantly don't jar the hard disk, as this may cause a hard disk crash. Use hard disk maintenance programs like DEFRAG under DOS or Norton Utili- ties SPEEDISK to reorganize your hard disk by eliminating fragmentation and improving hard disk access time. Handling the Computer Battery Packs The battery packs furnished with the computer require reasonable care and handling to en- sure efficient operation and maximum life. Periodically inspect the battery terminals and the batteries for evidence of corrosion and/or oxide build-up. To ensure that the battery packs endure a normal life cycle, always observe the following precautions when handling the battery packs: Do not drop the battery packs or subject them to excessive shock and vibration., Field Service Guidelines 4-3 Do not expose the battery packs to direct sunlight, moisture, or chemical com- pounds. Do not disassemble the battery packs. Do not use the battery packs to power other devices. Do not short the battery leads or connect the battery with reversed polarity. Never attempt to charge the battery packs in any way other than as described in this manual and the user’s guide. Always charge the battery packs as soon as possible after a low battery indication. Maintaining the LCD Quality Heat is the most common problem associated with the screen. After a lengthy work session, the typical routine 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 will eliminate this potentiality damaging situation. REQUIRED TOOLS AND EQUIPMENT All NEC Versa 2400 corrective maintenance procedures can be performed using the follow- ing tools: tweezers small flat-blade screwdriver small Phillips screwdriver small Hex-bolt screwdriver. NOTE: All boards, options and peripherals contain components that are sensitive to static electricity. When handling any of these items, protect against static discharge by using wrist or ankle grounding straps and grounded working mats. When moving or storing items, use the anti-static bags supplied with the items., 4-4 Field Service Guidelines PARTS REMOVAL AND REPLACEMENT PROCEDURES This section contains field service-level removal/replacement procedures for the notebook. Refer to the exploded diagram later in this section to identify all relevant parts. The NEC Versa notebook is designed for optimum modularity in order to make field replacement maintenance easy and efficient. Removing/Replacing the Notebook Battery Pack The procedure for 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 replace the battery pack again, simply slide the battery pack into the system unit until you hear the spring latch hook snap into place. The battery pack can only be inserted in one direction so there is no danger of improper insertion., Field Service Guidelines 4-5 Removing/Replacing the Hard Disk Drive Module The procedure for removing and replacing the hard disk drive module 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 hard disk drive module to the system unit. To remove the hard disk drive module, push the lock knob sideways with one hand and with the other hand pull the hard disk drive module out. Note that this has to be done simultaneously. 3. 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 Floppy Disk Drive Module The procedure for removing and replacing the floppy disk drive 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 floppy disk drive module to the system unit. To remove the floppy disk drive module, push the lock knob sideways with one hand and with the other hand pull the floppy disk drive module out. Note that this has to be done simultaneously. 3. 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., 4-6 Field Service Guidelines 4. To replace the floppy drive unit, remove the four small screws attaching it to the null floppy disk drive assembly and remove the floppy disk drive cable. 5. To replace the floppy disk drive module, reverse the above procedure. Figure 4-2 Floppy 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 them. 3. Lift the status bar cover out. 4. To replace the LCD Status Cover and Hinge Covers, reverse the removal proce- dures mentioned above. Removing/Replacing the Keyboard The procedure for removing and replacing the keyboard is as follows: 1. Turn off the computer. Follow all disassembly procedures mentioned from the start of this section. 2. Lift the keyboard out and tilt the upper edge of the keyboard towards you, but do not lift the keyboard away. Rest the keyboard (face down) on the palm rest area., Field Service Guidelines 4-7 3. Remove the keyboard cable from the system board’s FPC type connector. To re- lease the keyboard cable from the connector, gently lift (using your fingernail or a thin pointed object) the connector locks on the left and right edge. Pull the key- board cable out and remove the keyboard from the notebook. 4. To replace the keyboard; rest the keyboard face-down on the palm rest area. In- sert the keyboard cable 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 lift the heat pipe from the unit. 3. You do not need to remove this part if you are removing/replacing the LCD. WARNING: The CPU is sometimes attached to the heat pipe, so be careful not to damage the pins or the CPU may be inoperable. Removing/Replacing the CPU The procedure for removing the CPU is as follows: 1. Turn off the computer. Follow all disassembly procedures mentioned from the start of this section. 2. The CPU is located at the left rear of the system base assembly under the heat pipe. The system board has been designed to allow the heat generated by the CPU to be released from the system. 3. Slowly remove the CPU, moving around each side, little by little. Avoid damaging the CPU pins by forcing the CPU out of its slot immediately. Also, do not pull out the CPU heat sink as it is part of the CPU. You must remove the CPU and the heat sink together. 4. To replace the CPU, align it with pin 1 of the socket and plug in the CPU. Make sure that the CPU pins are straight before inserting it. Broken or damage pins on the CPU may totally damage the CPU. To remount the CPU, reverse the disas- sembly procedure mentioned above., 4-8 Field Service Guidelines Y ou do not need to remove this part if you are removing/replacing the LCD. Removing/Replacing the Cover-Display 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 connector from the LED board. 3. Lift the Cover-Display LCD Assembly Module from off of the unit and set aside. 4. To remount the Cover-Display LCD Assembly Module, reverse the disassembly procedure mentioned above. Removing/Replacing the System Top Cover Assembly and the NEC VersaGlide Assembly The procedure for removing and replacing the system top cover assembly and VersaGlide is as follows: NOTE: If you plan to continue remov- ing/replacing modules from the notebook you must follow all of the disassembly procedures mentioned from the start of this section. 1. Turn off the computer and remove the Battery, Hard Disk Drive, and Floppy Disk Drive Modules. Follow all disassembly procedures mentioned from the start of this section. 2. Turn the System Unit upside down with the bottom facing up. Remove the nine screws securing the base unit assembly from the top unit assembly. 3. Return the back to the normal position. Remove the screw located between the hinges above the LEDs. Next remove the screw located just under the speaker on the left side, the screw just to the right of the LEDs and the screw located to the right of the LCD cable connector. Lift the top cover from the base cover. Note, that the LCD, speaker, and the VersaGlide cables are all still attached to the sys- tem board. 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., Field Service Guidelines 4-9 5. To replace the whole top case assembly, reverse the removal procedures men- tioned above. We recommend that you do the top cover screws first, then the bottom cover screws. Make sure to test the VersaGlide before entirely securing it to the top cover case. 6. You do not need to remove the CPU unless you are going to replace it. Removing/Replacing the LED Board The procedure for removing the LED board is as follows: 1. Turn off the computer. Follow all disassembly procedures mentioned from the start of this section. 2. The LED Board is located in the center rear of the system base unit. This board alerts you to the processes presently in use on the computer. 3. Remove the two screws and lift the board carefully out of the connections to the system board. Figure 4-3 The LED Board Module Assembly Removing/Replacing the System Board and I/O Board The system board and the I/O board are assembled together as one unit and must be re- moved from the base unit before being separated from each other. The procedure for re- moving the system board and 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., 4-10 Field Service Guidelines 4. Since the system board is the main unit of the notebook, all of the other boards are connected to this electronic module either by connector or by cable. Special care should be taken when removing this module, so as not to damage any of these connectors and/or cables. Figure 4-4 The System Board and I/O Boards Separating the System Board and I/O Board The system board is attached directly to the I/O board. The following procedure should be taken to separate the two boards: 1. Turn off the computer. Follow all disassembly procedures mentioned from the start of this section. 2. Remove the four medium spacers located along the top and left side edge and the one screw located at the center bottom of the system board. 3. Slowly separate the I/O Board and system board, being cautious about the con- nectors coupling the two boards together. 4. To reattach the I/O Board and system board, reverse the separation procedures mentioned above., Field Service Guidelines 4-11 Figure 4-5 The I/O Board Module Assembly, 4-12 Field Service Guidelines Removing/Replacing the Power Board The procedure for removing the 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, Field Service Guidelines 4-13 ILLUSTRATED PARTS BREAKDOWN This section contains the illustrated parts breakdown (IPB) and NEC part numbers for the NEC Versa 2400 Series computer. Table 4-1 lists field-replaceable parts and corresponding part numbers. Figure 4-7 shows the field-replaceable parts for the docking station. Table 4-1 NEC Versa 2400 Series Field-Replaceable Parts* Item D escription P art Number 1 Main Battery (NiMH) 2 1-90128-31 2 TEAC CD-ROM Assembly 2 5-00242-00 3 AC Adapter 12-00118-30 4 AC Power Cord 22-30031-00 5 CMOS Battery T BD 6 AC/DC Board Assembly 51-70187-10 7 VersaGlide Assembly 51-70185-11 8 Cover, Left Hinge 24-40827-00 9 U.S. Keyboard 7 1-30335-00 10 L CD Cable Assembly, 11.3” 2 2-20286-00 11 N EC Model Nameplate, NEC Versa 2400 25-41033-00 NEC Model Nameplate, NEC Versa 2400CD 25-41034-0012LCD Front Panel Assembly, 11.3” 2 4-40818-0013LCD, Hitashi, 11.3” 71-10469N00 14 LCD Inverter 12-00146-00 15 L CD Rear Cover, 11.3” 24-40819-016NEC Logo 2 5-40851-00 17 C over, Right Hinge 2 4-40828-00 18 S tatus Cover 24-408822-00 19 T op Cover Assembly 24-40821-00 20 C PU, Pentium, 100 MHz 5 1-90022-10 CPU, Pentium, 133 MHz 51-90024-1021I/O Port Casing 2 4-40810-1022Audio Cover 24-40826-00 23 L ED Board Assembly 51-70184-00 24 S ystem Board 51-70182-00 _ * This data was prepared September, 1996. For an up-to-date listing of spare parts, please call FastFacts (800) 366-0476 and order document number 42200167, 4-14 Field Service Guidelines Table 4-1 NEC Versa 2400 Series Field-Replaceable Parts* I tem D escription P art Number 25 I /O Board 5 1-70183-00 26 I /O Bracket 24-50204-00 27 8 10 MB Hard Disk Drive Assembly 2 5-00237-00 1 GB Hard Disk Drive Assembly 25-00238-00 28 D iskette Drive Assembly 2 4-70006-00 29 R OM Door 2 4-40810-1030Rubber Foot 2 4-80631-1031Bottom Cover Assembly 2 4-40793-10 3 2* S peaker 24-80620-00 3 3* L eft Speaker Cable 22-20279-00 34* R ight Speaker Cable 22-20280-00 35* S peaker Holder 2 4-50226-00 36* Keyboard Bracket 24-50227-00 * Not shown in IPB figure., Field Service Guidelines 4-15 Figure 4-7 NEC Versa 2400 Series Illustrated Parts Breakdown, 4-16 Field Service Guidelines Packaging and Documentation Packaging and documentation part numbers are listed in Table 4-2. Table 4-2 Packaging and Documentation Part Numbers D escription M odel Number NEC Versa 2400 Series User’s Guide 819-200134-000 Rev. 00 NEC Versa 2400 Series Service and 819-200167-000 Rev. 00 Reference Manual (this guide) Shipping Carton 158-041012-000 F oam Insert 1 58-041014-000 Foam Insert 1 58-041014-001,

Section 5 Troubleshooting and Repair

This section focuses on providing you with some information on notebook basic trouble- shooting as well as the BIOS POST error codes and messages. SERVICE INFORMATION NEC service and information telephone numbers are listed in the following table. T able 5-1 NEC Service and Information Telephone Numbers Service Call To order NEC spare parts In the U.S., call 1(800) 632-4525 To order options in the U.S. Local Sales Office To access the NEC Electronic Bulletin Board 1(508) 635-4706 System (BBS) To download files - provides software drivers 1(508) 635-4706 and the latest ROM BIOS NEC Service In the U.S., call 1(800) 632-4525 Listen to the automated 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 In the U.S., call 1(800) 366-0476 the latest information about NEC products to Outside U.S., 1(708) 860-9500 Ext. 2621 the fax machine 24 hours a day Canadian Inquiries 1(416) 795-3554 Technical Support 1-800-632-4525 TECHNICAL SUPPORT NEC Technologies Technical Support Center (TSC) provides an E-mail service for Internet users besides the support listed in Table 5-1. Technical questions regarding NEC products can be sent over the Internet system to TSC. The Internet address is as follows: email is hidden, 5-2 Troubleshooting and Repair If it is more convenient, questions may also be faxed to TSC. The TSC fax number is: (508) 635-4666 Along with the complete product name and question(s), be sure to included your name and fax number or Internet address, so that an expert can respond to your question(s). It would also be helpful to include your telephone number in case TSC can not get their an- swer to you through the Internet or by fax. TSC will reply to all questions received by In- ternet or fax within one business day. PRODUCT INFORMATION NEC FastFacts is an automated electronic information service used to obtain up-to-date product application notes, installation procedures, troubleshooting tips, data 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 document numbers. Current catalogs include: Catalog 1 - Monitors, Graphics Boards, and Data Projector Products Catalog 2 - CD ROM Hardware and Software, Printers, and Disk Drive Products Catalog 3 - Laptop, Desktop, and Server Computer Products Catalog 9 - Price and Configuration Index Ordering Information from FastFacts Order information from FastFacts as follows: 1. Check that the fax machine is on. 2. Locate the document part number. 3. Using a touch-tone telephone, call 1-800-366-0476 (U.S. and Canada only). F or international; enter the international long distance access number, the U.S. telephone number, or the U.S. extension (01-708-860-9500 ext. 2621)., Troubleshooting and Repair 5-3 4. Listen to the instructions provided by the automated attendant. Press 1 to skip the FastFacts introduction and jump to the automated instructions for ordering a document or catalog. P ress 2 for an introduction to FastFacts, followed by the automated instructions for ordering a document or catalog. 5. When asked by the automated attendant, enter your fax number and telephone number. For international; first enter the international long distance access number (011), your country code, area or city code, and then your fax number. The information requested will be automatically sent to your fax machine. If Fast- Facts 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 will 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 computer? Has the battery been fully charged? Is the computer turned on and the POWER LED activated? Is the LCD display control switch moved to its minimum level? Is the LCD display switched to the external monitor? Are all cables and devices connected properly and securely? Have all needed device drivers been installed properly? Have you checked the AUTOEXEC.BAT and CONFIG.SYS files for errors? Is the Suspend Mode activated on the LCD Status Bar? Press any key or press the power switch to wake system up again., 5-4 Troubleshooting and Repair POWER ON SELF TEST (POST) This section provides you with the Phoenix BIOS POST errors and messages summary. Refer to this whenever you encounter error messages or beep codes generated by the com- puter during startup. POST Messages The following is a summary of the Phoenix BIOS startup error messages that are displayed on the notebook’s display. These messages will help you to understand many of the note- book’s problems that may be corrected by entering the CMOS SETUP program and checking the original values. Table 5-2 POST Error Messages Message Possible Cause Action Diskette drive A failure T he drive failed or is C heck the drive to determine missing. the problem. Diskette read failure - The diskette is either not R eplace the diskette with a press F1 to retry boot, F2 formatted or is defective. bootable diskette and retry. for SETUP utility D isplay adapter failed, The primary video adapter Check the primary video using alternate failed. adapter. Gate A20 failure The keyboard controller is Check the keyboard not accepting command, controller and system board. specifically, the enable Turn the power off, then back and disable A20 on again. If the problem command. persists contact qualified NEC service personnel. Fixed disk configuration The specified Correct the fixed disk error configuration is not configuration. supported or doesn't match the actual hardware installed. Fixed disk controller T he fixed disk may be T ry rebooting. If that doesn't failure defective. work, replace the fixed disk. Fixed disk read failure- The fixed disk may be C heck the drive type selected press F1 to retry boot, F2 configured incorrectly or is in SETUP. Try rebooting. If for SETUP utility defective. that does not work, replace the fixed disk. P ointer device failure The PS/2-style mouse Try rebooting. If problem failed. persists, check the mouse, it's cable and connector., Troubleshooting and Repair 5-5 Table 5-2 POST Error Messages Message Possible Cause ActionNoboot device available - E ither diskette drive A:, Try rebooting. If problem press F1 to retry boot, F2 the fixed disk, or both the persists, replace the diskette for SETUP utility diskette and fixed disk are or the fixed disk. defective. No boot sector on fixed T he C: drive is not Format the C: drive and disk - press F1 to retry formatted or is not make it bootable. boot, F2 for SETUP utility bootable. Not a boot diskette - press T he diskette in drive A: is Replace the diskette with a F1 to retry boot, F2 for not formatted as a bootable diskette and try SETUP utility bootable diskette. rebooting. N o timer tick interrupt T he timer chip has failed. C heck the system board, Turn the power off, then back on again. If the problem persists, contact qualified service personnel. Shutdown failure E ither the keyboard Check the keyboard controller is not accepting controller and system board. the reset command or the Turn the power off, then back associated reset logic has on again. If the problem failed. persists, contact qualified service personnel. Time of day not set - run Real Time Clock not set. R un SETUP utility. SETUP program Timer 2 failure T he timer chip has failed. C heck the system board. Turn the power off, then back on again. If the problem persists, contact qualified service personnel. F2 to enter ROM-based Invalid configuration You must run SETUP utility SETUP information must be and correct configuration changed. information. Invalid configuration D isplay adapter is R un the SETUP utility. information - please run configured incorrectly. SETUP M emory size is incorrect. W rong number of diskette drives., 5-6 Troubleshooting and Repair Table 5-2 POST Error Messages Message Possible Cause Action K eyboard clock line failure T he keyboard, the Make sure the keyboard keyboard cable cable and keyboard are connection, or the connected properly. Check keyboard controller is the keyboard controller and defective. the system board. Turn the power off, then back on again. If the problem persists, contact qualified service personnel. Keyboard data line failure T he keyboard controller Check the keyboard firmware has failed. controller and system board. Turn the power off, then back on again. If the problem persists, contact qualified service 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. M emory failure at hex- Circuitry associated with T urn the power off, then back value, read hex-value, the memory chips has on again. If the problem expecting hex-value failed. persists, contact qualified service personnel. Unexpected interrupt in Hardware interrupt or NMI Check the timer chip or the protected mode occurred while in interrupt controller on the protected mode. system board. Real time clock failure The RTC or battery failed. R un SETUP and turn the power off and on. If the problem persists, replace the RTC battery. If the problem remains, contact qualified service personnel., Troubleshooting and Repair 5-7 Informational Messages This section lists the messages that provide information to the user but require no action. Table 5-3 BIOS Informational Messages Message Meaning nnnK Base Memory T he amount of base memory that tested successfully. n nnK Extended T he amount of extended memory that tested successfully. Memory tests terminated by The message indicate that a user pressed the keystroke 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 A user can stop the memory tests by pressing the the SPACEBAR to terminate the spacebar. memory test P ress the F1 key to continue, F2 This message indicates that an error was found during to run the Setup utility POST. Pressing the F1 key allows the system to attempt to boot. Press F2 allows users to run the ROM-based SETUP utility to correct configuration information., 5-8 Troubleshooting and Repair Run-time Error Messages The following table lists run-time error messages. T able 5-4 Run-time Error Messages Message Cause Action I/O card parity interrupt at Memory on a peripheral card Check the memory cards address. Type (S)hut off has failed. installed in the system. NMI, (R)eboot, other keys to continue Memory parity interrupt at A memory chip(s) has failed. R eplace the system board. address. Type (S)hut off NMI, (R)eboot, other keys to continue Unexpected HW interrupt, Hardware problem. Not Check all hardware in the interrupt at address. Type displayed if the expected system. (R)eboot, other keys to interrupt handler is not continue enabled. U nexpected SW interrupt, Error(s) in the software T urn the machine off and interrupt at address. Type program. Not displayed if the then on again. If doesn’t (R)eboot, other keys to extended interrupt handler is work, check the program. continue not enabled. Unexpected type 02 interrupt A parity error occurred, but T urn the power off and then at xxxxh. Type (S)hut off the source can not be on again. NMI, (R)eboot, other keys to determine. continue, Troubleshooting and Repair 5-9 QUICK TROUBLESHOOTING This section summarizes problems that may develop during system operation and lists sug- gested corrective actions. Table 5-5 Quick Troubleshooting Problem C orrective ActionsNopower C heck that the AC adapter is plugged into the power connector of the system. Also, that the AC adapter is plugged into a properly grounded AC power outlet. If using the battery as main power source, check if the battery pack is of the right type, charged and is inserted correctly. Check the power board of the system. Is it inserted into the system board connector properly? Otherwise, replace the power board. Data on the LCD is unreadable A djust the brightness and contrast display controls found on the right side of the LCD panel. Check if the LCD cables are inserted properly. Check also connections inside the LCD panel. Check if installed VGA driver is correct. Check VGA controller chip on the system board if there is any cold or loosed soldering. R eplace the system board. LCD screen does not show data C heck the LCD Status Bar if Suspend mode is activated. Press any key or press the power button to resume operation and display. C heck if LCD cables are disconnected or loosed. C heck if the display output is switched to the external monitor. C heck if the Contrast level is set to minimum. Check if there is power. Replace LCD Inverter board found inside the LCD Panel., 5-10 Troubleshooting and Repair Table 5-5 Quick Troubleshooting P roblem C orrective Actions B attery Power does not last M ake sure that the power management features are enabled. R echarge the battery pack for 1½ hour before using again. Replace the battery pack. System halts during boot sequence Check condition of selected bootload device (diskette or hard disk) for bad boot track or incorrect OS files. Try booting from a new bootable diskette and recopy or repartition hard disk. Check for any BIOS error messages on the display screen. Replace system board. I /O processing malfunctions C heck the connections of all internal devices. Replace system board. Diskette drive does not work C heck if floppy drive cable is connected properly. Check diskette type if correct and not faulty. R eplace diskette drive. Replace system board. H ard disk drive malfunction Check if hard disk drive is set properly on CMOS SETUP. Check drive cables and connections. C heck if disk drive is good. R eplace the system board. Memory malfunction C heck if the memory module is inserted properly. Replace the memory module. Replace the system board. External keyboard or PS/2 mouse Check if keyboard or mouse are connected doesn’t work properly. Check Y-cable if it is being used. Power off system first before plugging in the device. R eplace the keyboard or mouse. Replace the system board., Troubleshooting and Repair 5-11 Table 5-5 Quick Troubleshooting P roblem C orrective Actions PCMCIA card does not work Check the PCMCIA driver installation for any IRQ or IO address conflict. Check if the PCMCIA card is inserted properly and all connections are set. R eplace the PCMCIA card. Replace the system board. Trackball doesn’t work C heck if trackball is enabled under CMOS Setup. Check if PS/2 mouse driver is properly installed. C heck trackball cable inside the system if it is inserted properly. R emove trackball ring cover and clean the ball and the rollers inside. Replace trackball module. C heck the keyboard controller chip for any cold or loosed soldering. Replace the system board. Serial device does not workIfusing serial mouse, check if trackball option is disabled under CMOS Setup. Check if mouse driver is installed properly. Check if serial device is connected properly. Replace serial device. Check the I/O controller chip on the system board for any cold or loosed soldering. Replace the system board. Parallel device does not work C heck if all connections are properly set. Check if external device is turned on. C heck I/O controller chip on the system board for any cold or loosed soldering. R eplace the system board.,

Appendix A Video Modes

The C&T 65548 VGA chipset supports high resolution fixed frequency and variable fre- quency analog monitors in interlaced and non-interlaced modes of operation. Digital moni- tor support is also built-in. The tables in this section list all 65548 CRT monitor video modes. N OTE: The letter “I” under the Hex Mode col- umn for the succeeding tables denotes Interlaced monitors. VGA STANDARD MODES The following table lists VGA standard modes. Table A-1 VGA Standard Modes (Text Mode) Hex N o. of Text F ont P ixel Reso- Dot Horiz. Vert. Mode Colors Display Size lution Clock Freq. Freq. MHz KHz Hz 0 , 11640x259x16 3 60 x 400 2 8.322 3 1.57040 x 258x14 320 x 350 2 5.17540x258x8320 x 200 2 5.175 2, 3 16 80 x 259x720 x 400 28.322 31.5 70 80 x 25 16 640 x 350 25.175 80 x 258x640 x 200 25.1758x87Mono 80 x 259x720 x 400 28.322 31.5 70 80 x 25 16 720 x 350 80 x 259x720 x 3509x8, A-2 Video Modes Table A-2 VGA Standard Modes (Graphics Mode) H ex No. of Text Font Pixel Reso- Dot H oriz. V ert. Mode Colors Display Size lution Clock Freq. Freq. MHz KHz Hz4440 x 258x8320 x 200 2 5.175 31.5705440 x 258x8320 x 200 2 5.175 31.5706280 x 258x8640 x 200 2 5.175 31.570Table A-3 VGA Standard Modes (Planar Mode) Hex No. of T ext F ont Pixel Reso- Dot Horiz. Vert. Mode Colors Display Size lution Clock Freq. Freq. MHz KHz HzD1640x258x8320 x 200 2 5.175 31.570E1680x258x8640 x 200 2 5.175 31.570FMono80x258x14 640 x 350 2 5.175 31.570101680x258x14 640 x 350 2 5.175 31.57011280 x 308x16 640 x 480 2 5.175 31.570121680x308x16 640 x 480 2 5.175 31.570Table A-4 VGA Standard Modes (Packed Pixel Mode) Hex No. of T ext F ont P ixel Reso- Dot Horiz. V ert. Mode Colors Display Size lution Clock Freq. Freq. MHz KHz Hz 13 2 5640x258x8320 x 200 2 5.175 31.5 7 0, Video Modes A-3 VGA EXTENDED MODES The C&T 65548 VGA BIOS supports standard VESA and extended modes, listed in the following table. Table A-5 VGA Extended Modes (Text Mode) Hex No. of T ext Font P ixel Dot Clock Horiz. V ert. Mode Colors Display Size Resolution MHz Freq. Freq. KHz Hz6016132 x 258x16 1056 x 400 40.0 3 0.5686116132 x 508x16 1056 x 400 40.0 3 0.568Table A-6 VGA Extended Modes (4-Bit Linear Mode) Hex N o. of Text Font P ixel Reso- D ot H oriz. V ert. Mode Colors Display Size lution Clock Freq. Freq. MHz KHz Hz201680x308x16 640 x 480 2 5.175 31.5602216100 x 378x16 800 x 600 4 0.0 3 7.5602416128 x 488x16 1024 x 768 65.0 4 8.56024I 44.9 3 5.543Table A-7 VGA Extended Modes (8-Bit Linear Mode) Hex No. of T ext Font P ixel Reso- D ot H oriz. Vert. Mode Colors Display Size lution Clock Freq. Freq. MHz KHz Hz3025680x308x16 640 x 480 2 5.175 31.56032256 1 00 x 378x16 800 x 600 4 0.0 3 7.56034* 2 56 1 28 x 488x16 1024 x 768 65.0 4 8.56034I* 4 4.9 3 5.543Table A-8 VGA Extended Modes (15-Bit Linear Mode) Hex N o. of Text Font P ixel Reso- Dot H oriz. Vert. Mode Colors Display Size lution Clock Freq. Freq. MHz KHz Hz 40* 3 2K 80 x 308x16 640 x 480 5 0.350 31.5 6 0, A-4 Video Modes Table A-9 VGA Extended Modes (16-Bit Linear Mode) - 1MB Video Memory Only H ex N o. of T ext F ont P ixel Reso- D ot Horiz. Vert. Mode Colors Display Size lution Clock Freq. Freq. MHz KHz Hz4164K 80 x 308x16 640 x 480 5 0.350 31.560Table A-10 VGA Extended Modes (24-Bit Linear Mode) H ex No. of T ext Font Pixel Reso- D ot Horiz. V ert. Mode Colors Display Size lution Clock Freq. Freq. MHz KHz Hz 5 0* 1680x308x16 640 x 480 6 5.0 2 7.1 5 1.6 Table A-11 VGA Extended Modes (Planar Mode) Hex No. of T ext Font P ixel Reso- Dot Horiz. V ert. Mode Colors Display Size lution Clock Freq. Freq. MHz KHz Hz 6 A, 70 16 1 00 x 378x16 800x 600 4 0.0 3 8.06072, 7516128 x 488x16 1024 x 768 65.0 4 8.56072, 75I 4 4.9 3 5.543Table A-12 VGA Extended Modes (Packed Pixel Mode) Hex N o. of Text Font P ixel Reso- Dot Horiz. V ert. Mode Colors Display Size lution Clock Freq. Freq. MHz KHz Hz 781680x258x16 640 x 400 2 5.175 31.5707925680x308x16 640 x 480 2 5.175 31.5607C 2 56 1 00 x 378x16 800 x 600 4 0.0 3 7.5607E* 256 1 28 x 488x16 1024 x 768 65.0 4 8.5607EI* 4 4.9 3 5.5 4 3, Video Modes A-5 VGA HIGH REFRESH MODES The following tables list VGA high refresh modes. Table A-13 VGA High Refresh Modes (Packed Pixel Mode) H ex No. of T ext F ont P ixel Reso- D ot Horiz. V ert. Mode Colors Display Size lution Clock Freq. Freq. MHz KHz Hz 30 2 5680x308x16 640 x 480 3 1.5 3 7.57532* 2 56 1 00 x 378x16 800 x 600 4 9.5 4 6.975Table A-14 VGA High Refresh Modes (Planar Mode) H ex No. of Text F ont Pixel Reso- D ot Horiz. Vert. Mode Colors Display Size lution Clock Freq. Freq. MHz KHz Hz 121680x308x16 640 x 480 3 1.5 3 7.5756A, 70 16 1 00 x 378x16 800 x 600 4 9.5 4 6.975Table A-15 VGA High Refresh Modes (Packed Pixel Mode) H ex No. of Text F ont P ixel Reso- D ot H oriz. Vert. Mode Colors Display Size lution Clock Freq. Freq. MHz KHz Hz7925680x308x16 640 x 480 3 1.5 3 7.5757C* 2 56 1 00 x 378x16 800 x 600 4 9.5 4 6.9 7 5, Battery Replacement A lithium battery in your computer maintains system configuration information. In the event that the battery fails to maintain system configuration information, NEC recommends that you replace the battery. WARNING: There is a danger of explosion if the battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Discard used bat- teries according to the manufacturer’s instructions. Battery Disposal Y our bridge battery (not your main battery) is made of Nickel Metal Hybrid (NiMH). The bridge battery must be collected, recycled, or disposed of in an environmentally-approved manner. Your main battery, made of Lithium Ion (Li-Ion), and your CMOS lithium battery are not recyclable. The incineration, landfilling, or mixing of Li-ION and NiMH batteries with the municipal solid wasted stream is prohibited by law in most areas. C ontact your local waste management officials for other information regarding the environ- mentally sound collection, recycling, and disposal of the batteries.,

Index

Disassembly A battery pack, 4-4 AC adapter CPU, 4-7 connecting, 1-10 diskette drive, 4-5 AC power adapter, 3-11 hard disk drive, 4-5 AC/DC adapter specifications, 2-16 heat plate, 4-7 I/O board, 4-9 B keyboard, 4-6 Battery LCD, 4-8 discharged, 1-5 LCD status bar cover, 4-6 removing, 1-9 LED board, 4-9 Battery charger specifications, 2-15 Power board, 4-12 Battery compartment latch, 1-14 required tools, 4-3 Battery compartment release lock, 1-9 system board, 4-9 Battery features, 3-11 top cover, 4-8 Battery packs VersaGlide, 4-8 handling, 4-2 Disassembly procedures, 4-4 Battery specifications, 2-14 Diskette drive Battery types, 1-9 standard, 1-8 BIOS, 3-3 Diskette drive specifications, 2-13 BIOS informational messages, 5-7 BIOS Setup utility, 1-15, 3-3 E BIOS upgrade procedure, 1-21 Embedded numeric keyboard, 1-5 Bottom features, 1-14 Environmental specifications, 2-21 EPROM chip, 3-3 C External keyboard, 1-11 CD-ROM reader specifications, 2-14 External monitor Cleaning the notebook connecting, 1-12 exterior, 4-1 External VGA, 3-8 interior, 4-2 CMOS battery F discharging, 1-17 FastFacts, 5-2 COM 1, 1-13 Features, 1-2 Connecting an external PS/2 mouse, 1-11 Field service guidelines, 4-1 Converter board specifications, 2-8 Field-replaceable parts list, 4-13 CPU, 1-2 Floating point unit, 3-4 P54CSLM, 3-3 Fn keys, 1-6 removing, 4-7 Functional block diagram, 3-2DHDC/DC converter specifications, 2-15 Hard disk drive compartment, 1-9 DIMM module, 1-20 Hard disk drive specifications, 2-14, Index-2 Hard disk drives P protecting, 4-2 Packaging and documentation Hard disk subsystem, 3-10 part numbers, 4-16 Hardware reset switch, 1-10 Part numbers, 4-13 HDD LED, 3-10 PCMCIA controller, 3-9 Hot key descriptions, 2-21 PCMCIA slot using, 1-8 I PCMCIA sockets, 3-9 I/O board specifications, 2-10 PHDisk utility, 1-21 I/O subsystem, 3-6 POST messages, 5-4 Illustrated Parts Breakdown (IPB), 4-13 Power board, 3-11 Intel P54CSLM, 3-3 Power connector, 1-10 Power management modes, 2-19 K Power specifications, 2-22 Keyboard, 1-5 Power subsystem, 3-10 Keyboard controller, 3-8 Power switch, 1-4 Keyboard specifications, 2-16 Power-on self test (POST), 1-15 Preventive maintenance, 4-1 L Printer LCD cover switch, 1-4 connecting, 1-13 LCD inverter board, 3-11 Product information LCD quality Using FastFacts, 5-2 maintaining, 4-3 PS/2 mouse, 1-11 LED indicator board specifications, 2-9 LED status indicators, 2-13 Q Quick troubleshooting, 5-9

M

Memory R DRAM, 3-6 Resolution, 3-8 ROM, 3-6 Run-time error messages, 5-8 upgrading, 1-19 Memory compartment, 1-7 S Memory compartment cover, 1-14 SCANDISK, 4-2 Memory configurations, 1-19 Separating the system and I/O boards, 4-10 Memory controller, 3-5 Serial port, 1-13 Memory subsystem, 3-6 Service information, 5-1 Microprocessor, 3-3 Setup utility, 1-15 Model configurations, 1-1 menu, 1-15 Shock specifications, 2-23 N Specifications NEC service telephone numbers, 5-1 system, 2-1 NiMH battery, 1-9 Status indicators, 2-13 features, 3-11 Status panel LEDs, 1-5 Num lock key, 1-6 Subsystems, 3-1 System BIOS, 3-3, Index-3 System board specifications, 2-7 System configuration diagram, 1-3 System faetures, 1-2 System logic controller, 3-4 System processor, 3-3 System specifications, 2-1 System upgrades, 1-19

T

Technical support contacting, 5-1 Transfer board specifications, 2-8 Troubleshooting checklist, 5-3

V

VersaGlide, 1-7 VersaGlide subsystem, 3-10 VGA extended modes, A-3 VGA high refresh modes, A-5 VGA port, 1-12 VGA standard modes, A-1 VGA VESA driver diskette, 1-12 Vibration specifications, 2-22 Video controller, 3-7 features, 3-7 Video modes, A-1

Y

Y-adapter, 1-11]
15

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