NEC NEC Computer Systems Division, Packard Bell NEC, Inc. manual

First Printing — March 1997 Copyright 1997 NEC Computer Systems Division, Packard Bell NEC, Inc. 1414 Massachusetts Avenue Boxborough, MA 01719 All Rights Reserved PROPRIETARY NOTICE AND LIABILITY DISCLAIMER T he info r ma t io n d isc lo s e d in t h is d o c u me n t , in c lu d ing a ll d e s ig n s a n d r e la t e d ma t e r ia ls , is t he [...]

xi Preface This service and reference manual contains the technical information necessary to set up and maintain the NEC Versa ® 2500 Series notebook computer. It also provides hardware and interface information for users who need an overview of the system’s design. The manual is written for NEC-trained customer engineers, system analysts, servi[...]

iii Contents Preface ......................................................................................................................... x i Abbreviations ............................................................................................................... xiii Section 1 Introduction Feature Highlights ..............................[...]

iv Contents System BIOS Upgrade Procedure ................................................................................ 1-20 Section 2 General Specifications Product Mix ................................................................................................................. 2-6 System Board Specifications ...............................[...]

Contents v DRAM Memory .................................................................................................... 3-6 ROM Subsystem ................................................................................................... 3-6 I/O Subsystem ..........................................................................................[...]

vi Contents Removing/Replacing the System Board and I/O Board .......................................... 4-10 Separating the System Board and I/O Board ......................................................... 4-11 Removing/Replacing the Power Board .................................................................. 4-12 Illustrated Parts Breakdown [...]

Contents vii 1-13 Connecting to the Printer Port ........................................................................ 1-12 1-14 Connecting to the Serial Port ......................................................................... 1-12 1-15 Bottom View of the Notebook ....................................................................... 1-13[...]

viii Contents 2-13 Battery Specifications ..................................................................................... 2-14 2-14 DC/DC Converter & Battery Charger Specifications ...................................... 2-15 2-15 Battery Charger Specifications ....................................................................... 2-15 2-[...]

Contents ix A-13 VGA High Refresh Modes (Packed Pixel Mode) ............................................ A -5 A-14 VGA High Refresh Modes (Planar Mode) ...................................................... A- 5 A-15 VGA High Refresh Modes (Packed Pixel Mode) ............................................ A -5 SOLD BY laptopia2005 DO NOT RESELL!! SOL[...]

(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 i s a Class B Digit a l Device. This equipm ent has be en te st ed [...]

xiii Abbreviations A ampere AC alternating current AT advanced technology (IBM PC) BBS Bulletin Board System BCD bi nary-coded decimal BCU BIOS Cus tomized Utility BIOS basic input/output system bit binary digit bp i bits per inch bp s bits per second BUU BIOS Upgrade Utility C centigrade Cache high-speed buffer storage CAM constantly addressable m[...]

xiv Abbreviations IRR Interrupt Request register ISA Industry Standard Architecture ISR In Service register I/O input/output IPC integrated peripheral controller ip s inches per second IRQ interrupt request K kilo (1024) k kilo (1000) KB kilobyte kg kilogram kHz kilohertz kV kilovolt l b pound LDTR local descriptor table register LED light-emitting[...]

Abbreviations xv UART universal asynchronous receiver/transmitter V volt Vdc volts, direct current VESA video electronics standards association VFO variable frequency oscillat o r VGA Video Graphics Array VLSI very large-scale integration VRAM virtual RAM W watt µ f microfarad µ PD microprocessor µ s microsecond Ω ohm SOLD BY laptopia2005 DO N[...]

Section 1 Introduction This section focuses on providing outline features and operations of the NEC Versa 2500 Series Notebook Computer, including the BIOS Setup program. (Refer to the User’s Guide for more information on operating the notebook.) The NEC Versa 2500 Series of note- books are lightweight, compact, and fully IBM compatible. The NEC [...]

1-2 Introduction FEATURE HIGHLIGHTS The NEC Versa 2500 Series notebook includes a variety of innovative features designed to meet the most demanding computing requirements Table 1-2 Feature Highlights Features Description CPU Intel P54CSLM-133 MHz processor with internal 16 KB cache memory and math coprocessor Memory On-board 16 MB RAM, can be upgr[...]

Introduction 1-3 SYSTEM CONFIGURATION The following diagram shows the NEC Versa 2500 Series system configuration. Cache RAM L2: 256KB write back BIOS Flash ROM 8 / 16MB RAM On-Board Upgradable to 48MB Color LCD (800x600) DSTN VL Bus Controller (VGA) NEC VersaGlide Serial Interface (RS-232C) Parallel Interface Bank 1 (Slot 1) 4 / 8 / 16MB DIMM Built[...]

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 2500 Series com[...]

Introduction 1-5 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 pre[...]

1-6 Introduction Table 1-3 Fn Key Combination Summary (cont’d) Key Combination Function Fn key + F11 key This ke y combination to gg les the LCD displa y backli g htin g (CCFT) on and off. Fn key + right key This key combination increases the contrast level. Fn key + left key This key combination decrease the contrast level. Fn key + Up key This [...]

Introduction 1-7 Memory Slot Compartment The memory compartment is located just under the keyboard. Inside the compartment are two extra memory module sockets which can accommodate any standard JEDEC 8 MB or 16 MB DIMM modules. Figure 1-5 Memory Slot Compartment The Right Side of the Notebook This section describes the features on the right side of[...]

1-8 Introduction The NEC Versa 2500 Series also comes with DOS/Windows PC card drivers for supporting various PC cards like modem cards, network cards, and other I/O and memory cards. The LED Status Bar, likewise, provides lights to indicate when the computer is accessing the in- serted PC cards. The upper PC card slot is referred to “ Slot 0 ”[...]

Introduction 1-9 Figure 1-7 Removing the Battery Pack Left Side of the Notebook The following details the left side of the NEC Versa 2500 Series computer. Figure 1-8 Left Side of the Notebook DC-IN Connector Jack The NEC Versa 2500 series provides a universal auto-switching AC adapter which con- nects the AC power cord into the power outlet. It is [...]

1-10 Introduction Figure 1-9 Connecting the AC Adapter to the Notebook Hardware Reset Switch To the right of the AC adapter connector jack, you will notice a small hole which allows an easy alternative to resetting the notebook’s hardware. The Rear of the Notebook The following details the rear side of the NEC Versa 2500 Series computer. Figure 1[...]

Introduction 1-11 Figure 1-11 Connecting an External Keyboard and PS/2 Mouse VGA Port The 15-pin female VGA connector allows you to connect an external VGA monitor that supports up to 1024x768 pixels resolution. When displaying on an external VGA monitor alone, the VGA port supports resolutions up to 1024x768 at 256 colors. The NEC Versa 2500 Serie[...]

1-12 Introduction Printer Port The 25-pin printer port provides a parallel interface to connect a parallel printer or pocket network adapter. Many operating systems and software applications refer to this port as LPT1. You can run the BIOS Setup program to change the configuration of the parallel port to Standard or Bi-directional. Figure 1-13 Conn[...]

Introduction 1-13 Figure 1-15 Bottom View of the Notebook The following describes the bottom of the NEC Versa 2500 Series computer. Battery Module Handle and Lock To release the battery module from its compartment, push the battery compartment latch as indicated by the arrow marked on it. While doing this, hold the handle of the battery module and [...]

1-14 Introduction SYSTEM BIOS SETUP PROGRAM This section provides the outline features and operation of the Phoenix BIOS Setup pro- gram used in the NEC Versa 2500 Series. The BIOS (Basic Input-Output System) Setup program allows you to change the system configuration settings such as the current date and time, the disk drive and ports settings, an[...]

Introduction 1-15 Table 1-4 Boot Main Setup Menu Item Function System Time This option allows y ou to chan g e the s y stem time, usin g the format hour : minute : second . You can change the system time here or from your operating system’s command prompt. System Date This option allows y ou to chan g e the s y stem date, usin g the format month [...]

1-16 Introduction Table 1-4 Boot Main Setup Menu (cont’d) Item Function POST Errors This options allow the s y stem to pause and displa y the error message at boot attempt. Keyboard Features Selects keyboard options. Num Lock This option toggles the Num Lock key on or off. Ke y board Repeat Rate This option allows y ou to select the auto-repeat k[...]

Introduction 1-17 Table 1-6 Boot Setup Security Menu Item Function Password This option allows y ou to limit access to the computer throu g h the use of a password. If y ou select this option, a pop-up win- dow appears askin g y ou to set or chan g e the password. A password can be up to seven characters in len g th, and is cleared by eliminating t[...]

1-18 Introduction Table 1-7 Boot Setup Power Savings Menu Item Function Power Saving This option allows y ou to enable or disable power mana g e- ment. Select Disabled , all other power mana g ement settin g s are i g - nored and disabled as well. Select Disabled ON AC , the power mana g ement is disabled onl y when the computer is powered b y the [...]

Introduction 1-19 Table 1-7 Boot Setup Power Savings Menu (cont’d) Item Function Cover Switch Con- trol This option allows y ou to effectivel y pro g ram the t y pe of event which occurs when the display panel is closed. Select SUSPEND , the computer enters the SUSPEND Mode when the LCD Panel is closed. Select Backlight Off , the s y stem powers [...]

1-20 Introduction To upgrade the memory in the notebook, follow these steps. 1. Power off the computer and remove the AC adapter and battery pack. 2. Remove the hinge covers, status bar cover, and the keyboard from the top of the unit and locate the memory expansion sockets. 3. Remove the extra DIMM module from its anti-static wrapping. 4. Hold the[...]

Introduction 1-21 1. Copy the PHLASH.COM & PLATFORM.BIN BIOS utility program and the BIOS ROM file to the hard disk subdirectory. You can also choose to run the program from the diskette. 2. Disable EMM386 or other memory manager programs before restarting the com- puter. When booting DOS, press F5 to bypass the CONFIG.SYS and AUTOEXEC.BAT . Yo[...]

Section 2 General Specifications The following table lists NEC Versa 2500 Series system specifications. Table 2-1 NEC Versa 2500 Series Specifications ITEM SPECIFICATION CPU Pentium P54CSLM-133 MHz TCP Package System RAM 16 MB On-board Upgradeable to 48 MB Memory Modules: 8 MB/16 MB/32 MB 256 KB, L2Cache RAM Module Slot Two Slots System Management [...]

2-2 General Specifications Table 2-1 NEC Versa 2500 Series Specifications (cont’d) ITEM SPECIFICATION CD-ROM Reader Removable CD-ROM Reader 8x speed Diskette Drive Removable Diskette Drive 720KB/1.44 MB Mode Support (Overseas version) Display 12.1” DSTN Color LCD Module: 800 x 600 in 256 colors External CRT Capability: 640 x 480 in 64K colors 8[...]

General Specifications 2-3 Table 2-1 NEC Versa 2500 Series Specifications (cont’d) ITEM SPECIFICATION HotKe y Operation Fn + F8 = PC Beep Mute Fn + Esc = Suspend Control Fn + <Right Arrow> = Contrast Up Fn + <Left Arrow> = Contrast Down Fn + <Up> = Brightness Up Fn + <Down> = Brightness Down Fn + <PgDn> = Decrease Sp[...]

2-4 General Specifications Table 2-1 NEC Versa 2500 Series Specifications (cont’d) ITEM SPECIFICATION Audio Support external Stereo Headphone Jack Support external Stereo Line-In Jack Support external MIC. Jack Two Built-in speakers Built in microphone Status Indicator LED Display External LED Power On & Battery Low (Blinking) Internal LED Ba[...]

General Specifications 2-5 Table 2-1 NEC Versa 2500 Series Specifications (cont’d) ITEM SPECIFICATION Key Components 12.1” Color DSTN SVGA LCD: EDMGR68KBF (Panasonic) CD-ROM: CDR-38E-900 Hard Disk Drive: 1.4 GB MK1401MAV (Toshiba) Diskette Drive: NEC FD1238H Ke y board: 87/88 Key Full Size (Windows 95) Controller: Mitsubishi M38813M4 VersaGlide[...]

2-6 General Specifications Table 2-1 NEC Versa 2500 Series Specifications (cont’d) ITEM SPECIFICATION Flash ROM: AMD AM29F002T PWM Controller: MAXIM MAX797 MOSFET: NS 9410 & 9953 AC Adapter PRODUCT MIX The following table lists the NEC Versa 2500 Series product mix. Table 2-2 Product Mix Versa 2500) CPU Intel ® Pentium/133 MHz, P54CSLM(TCP) [...]

General Specifications 2-7 SYSTEM BOARD SPECIFICATIONS The following table lists system board specifications. Table 2-3 Main Board Specifications ITEM SPECIFICATION Clock NS Clock Buffer CGS74CT 2524 CPU ∗ PGA Socket Cache ∗ 256KB, L2 DRAM ∗ 1M x 16-bit DRAM x 4 Video RAM ∗ 256K x 16-bit DRAM (5V / 60ns), SOJ x 2 System Chipset ∗ UMC UM88[...]

2-8 General Specifications TRANSFER BOARD SPECIFICATIONS The following table lists Transfer board specifications. Table 2-4 Transfer Board Specifications ITEM SPECIFICATION Internal Connector To FDD: 100 Pin, AMP To second batter y 100 Pin, AMP PCB Thickness: 1.2mm Layers: 4 CONVERTER BOARD SPECIFICATIONS The following table lists Converter board s[...]

General Specifications 2-9 LED INDICATOR BOARD SPECIFICATIONS The following table lists LED indicator board specifications. Table 2-6 LED Indicator Board Specifications ITEM SPECIFICATION Internal Connector To System PCB 50 Pin, Suyin To System PCB 40 Pin, Suyin To LCD Panel 50 Pin, KEL To Inverter 8 Pin, Molex To Left Speaker 2 Pin, Molex To Right[...]

2-10 General Specifications I/O BOARD SPECIFICATIONS The following table lists I/O board specifications. Table 2-7 I/O Board Specifications ITEM SPECIFICATIONS Clock Crystal 14.318 MHz, DIP Type Crystal 32.768KHz, DIP Type Crystal 4 MHz, DIP Type Generator: AV9154-43, SOP 16 Pin Buffer: CGS74CT2524 ROM Flash ROM for BIOS 256K x 8, 150ns System Chip[...]

General Specifications 2-11 Table 2-7 I/O Board Specifications (cont’d) ITEM SPECIFICATIONS Internal Connector To System PCB 100 Pin, AMP To System PCB 100 Pin, AMP To HDD Unit 50 Pin, KEL To CD ROM Unit 40 Pin, KEL To RTC Battery 2 Pin, Molex To Transfer PCB 40 Pin, Suyin To DC Converter 32 Pin, Suyin External Connector COM1 9 Pin, Suyin Printer[...]

2-12 General Specifications LCD INVERTER BOARD SPECIFICATIONS The following table lists LCD inverter board specifications. Table 2-8 LCD Inverter Board Specifications ITEM Specification Color Inverter Panasonic 12.1” DSTN LMG9980ZWC Input Voltage 8V to 20V Output Voltage 500VAC Max. Contrast Voltage 28V ~ 31V Output Load Current 6mA (Max.) Bright[...]

General Specifications 2-13 LED STATUS INDICATORS The following table lists NEC Versa 2500 Series LEDs. For example, the AC IN LED lights to indicate power is on and that the battery is charging. Table 2-9 Status LED Descriptions ITEM LED PMU Enabled HDD, FDD and CD-ROM Read / Write PC Card Slots Read / Write Num Lock Caps Lock Scroll Lock DISKETTE[...]

2-14 General Specifications HDD UNIT SPECIFICATIONS The following table lists the standard hard drive specifications. Table 2-11 Hard Disk Drive Specifications ITEM SPECIFICATION Module 2.5” Removable HDD Module Capacity 1.4 GB Interface Enhanced IDE Interface Unit Size 100mm (L) x 70mm (W) x 12.7mm (H) CD-ROM SPECIFICATIONS The following table l[...]

General Specifications 2-15 DC/DC CONVERTER & BATTERY CHARGER SPECIFICATIONS The following table lists DC/DC converter & battery charger specifications. Table 2-14 DC/DC Converter & Battery Charger Specifications ITEM SPECIFICATION Input Voltage 6V -> 19V Output Voltage 12V, 5V, 3.3V Output Current 0.1A, 2.5A, 2.5A Output Ripple Volt[...]

2-16 General Specifications KEYBOARD SPECIFICATIONS The following table lists keyboard specifications. Table 2-16 Keyboard Specifications ITEM SPECIFICATION Key Switch Type Membrane Key Stroke 3.0 ± 0.5mm Operating Force 50 ± 20GF Key Pitch 19.05mm AC/DC ADAPTER SPECIFICATIONS The following table lists AC/DC adapter specifications. Table 2-17 AC/[...]

General Specifications 2-17 BIOS SPECIFICATIONS The following table lists BIOS specifications. Table 2-18 BIOS Specifications ITEM Specification Floppy Disk Drive Support standard 3.5” FDD Support 720KB and 1.44 MB Modes Hard Disk Drive Support Standard IDE Hard Disk Auto-detect IDE Features Support LBA mode for larger capacity VGA Display Use Ch[...]

2-18 General Specifications Table 2-18 BIOS Specifications (cont’d) ITEM Specification Suspend (To RAM) STR can be invoked b y Hot-Ke y , Cover-Switch, Batter y Low-Low Condition, & Operating System request STR can be resumed by Keyboard & Power button Save To Disk STD can be invoked b y Hot-Ke y , Cover-Switch, Batter y Low condition &am[...]

General Specifications 2-19 POWER MANAGEMENT FEATURES (MODE DEFINITION) The following table lists power management specifications. Table 2-20 Power Management Modes Mode Device Speed Full-On Mode CPU State Peripherals State Full speed Normal Doze Mode Timer CPU State DRAM State Peripherals State Activity Events On / Off Stop Grant State Slow Refres[...]

2-20 General Specifications Table 2-20 Power Management Modes Mode Device Speed Suspend To Disk Timer CPU State Power System Power-On Group Activity Events Off/1/2/4/8/16 Min Off Off Micro-Controller Power Switch Batter y Low Condition CPU State LCD State CPU Clock/2 Batter y Low / Low Condition CPU State System Power Off Off POWER MANAGEMENT FEATU[...]

General Specifications 2-21 6. Fully-On Activity Events Occur 7. Suspend Mode Time-Out Battery Low - Low Condition 8. Resume Events Occur HOT KEY DEFINITION The following table lists hot key definitions. Table 2-22 Hot Keys FUNCTION KEY CONTENT Fn + Esc Suspend Fn + F10 LCD/CRT/SIMUL. Display Fn + F11 Panel Backlight On/Off Fn + F8 PC Speaker Only [...]

2-22 General Specifications POWER SOURCE SPECIFICATIONS The following table lists system power specifications. Table 2-24 Power Specifications Input Nominal Version AC Voltage 100 ~ 250 V 90 ~ 265 V AC Frequency 50 / 60 Hz 47 ~ 63 Hz VIBRATION SPECIFICATIONS The following table lists vibration specifications. Table 2-25 Vibration Specifications ITE[...]

General Specifications 2-23 ELECTRO-STATIC DISCHARGE (ESD) SPECIFICATIONS The following table lists static discharge specifications. Table 2-27 Electro-Static Discharge Specifications ITEM SPECIFICATION Contact Discharge ± 2, 4, 8, 12.5, 15 kV Air Discharge ± 2, 4, 15 kV HCP ± 2, 4 kV VCP ± 2, 4 kV SOLD BY laptopia2005 DO NOT RESELL!! SOLD BY l[...]

Section 3 Hardware Functional Overview The NEC Versa 2500 Series notebooks consist of several major functions and subsystems including: system BIOS – implemented on the system board and Flash ROM system processor – implemented on the system board system logic controller – implemented on the I/O Board memory subsystem – implemented on the sy[...]

3-2 Hardware Functional Overview FUNCTIONAL BLOCK DIAGRAM The following figure shows the NEC Versa 2500 Series functional diagram. Bank 0 8MB (on-board) Bank 1 8, 16MB (DIMM) Cache RAM L2: 256 KB write back CORE CHIP UMC UM8891BF-N, UM8892BF-N, UM8886BF-N VGA CHIP C&T 65548 CRT ON LLM INVERTER FLASH BIOS 256KB PCMCIA OMEGA 82C094 KB CONTROLLER [...]

Hardware Functional Overview 3-3 The NEC Versa 2500 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 Flash ROM chip with the system BIOS. The Flash ROM chip also includes BIOS Power-On Self Test (POST) diagnostic and boot- ing codes that tests the[...]

3-4 Hardware Functional Overview 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 Logi[...]

Hardware Functional Overview 3-5  On-board Memory up to 48 MB  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[...]

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 2500 notebooks contain 16 MB of 70ns page-interleaved DRAM on the system board. The notebook [...]

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 1 MB DRAM memory, 32-bit DRAM bu[...]

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 Tr[...]

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 pin PC card sockets and is register com- patible with Intel’s 82365SL[...]

3-10 Hardware Functional Overview The built-in controller 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 program. Setup auto-detects the installed hard disk type settings for optimized per- form ance. NOTE: Do not move the notebook when the[...]

Hardware Functional Overview 3-11 Internal Battery Pack The NEC Versa 2500 Series notebooks utilizes NiMH (Nickel Metal-Hydride) that pro- vides DC power for the notebook 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 r[...]

Section 4 Field Service Guidelines This section contains preventive and corrective maintenance procedures for the NEC Versa 2500 Series notebook computers. The first part of this section describes the computer cleaning procedures and preferred handling procedures for sensitive components (i.e., disk drives, batteries). The second part of this secti[...]

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 t[...]

Field Service Guidelines 4-3 Do not drop the battery packs or subject them to excessive shock and vibration. 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 reve[...]

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 [...]

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 secures the hard disk drive module to the system unit. To remove the[...]

4-6 Field Service Guidelines 3. To replace the diskette drive, remove the four flat screws attaching it to the null diskette assembly , two attaching the diskette cover and remove the diskette drive cable. 4. To replace the diskette drive unit, remove the four small screws attaching it to the null diskette drive assembly and remove the diskette dri[...]

Field Service Guidelines 4-7 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 [...]

4-8 Field Service Guidelines 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 a[...]

Field Service Guidelines 4-9 1. Turn off the computer and remove the Battery, Hard Disk Drive, and Diskette 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. Re[...]

4-10 Field Service Guidelines 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 separat[...]

Field Service Guidelines 4-11 Figure 4-4 The System Board and I/O Boards Separating the System Board and I/O Board The system board is attached directly to the I/O board. The following procedure should be taken to separate the two boards: 1. Turn off the computer. Follow all disassembly procedures mentioned from the start of this section. 2. Remove[...]

4-12 Field Service Guidelines Figure 4-5 The I/O Board Module Assembly 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 [...]

Field Service Guidelines 4-13 ILLUSTRATED PARTS BREAKDOWN This section contains the illustrated parts breakdown (IPB) and NEC part numbers for the NEC Versa 2500 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 2500 Seri[...]

4-14 Field Service Guidelines Table 4-1 NEC Versa 2500 Series Field-Replaceable Parts (cont’d)* Item Description Part Number 26 I/O Cover 24-40794-10 27 1.4 GB Hard Disk Drive Assembly 25-00371-00 28 Diskette Drive Assembly 25-00239-00 29 ROM Door 24-40810-10 30 Rubber Foot 24-80631-10 31 Bottom Cover Assembly 24-40793-10 32 * Keyboard Bracket 24[...]

Field Service Guidelines 4-15 Figure 4-7 NEC Versa 2500 Series Illustrated Parts Breakdown SOLD BY laptopia2005 DO NOT RESELL!! SOLD BY laptopia2005 DO NOT RESELL!![...]

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 Description Model Number NEC Versa 2500 Series User’s Guide 25-10584-00 NEC Versa 2500 Series Service and Reference Manual (this guide) 819-200191-000 Rev. 00 Shipping Carto[...]

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. Table 5-1 NEC Service and Information Telephone Numbers Service C[...]

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 telepho[...]

Troubleshooting and Repair 5-3 For international; enter the international long distance access number, the U.S. telephone number, or the U.S. extension (01-630-775-7999). 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 cat[...]

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 displaye[...]

Troubleshooting and Repair 5-5 Table 5-2 POST Error Messages (cont’d) Message Possible Cause Action No boot device available - press F1 to retr y boot, F2 for SETUP utility Either diskette drive A:, the fixed disk, or both the diskette and fixed disk are defective. Tr y rebootin g . If problem persists, replace the diskette or the fixed disk. No [...]

5-6 Troubleshooting and Repair Table 5-2 POST Error Messages (cont’d) Message Possible Cause Action Keyboard clock line failure The ke y board, the ke y board cable connection, or the ke y board controller is defective. Make sure the ke y board cable and ke y board are connected properl y . Check the ke y board controller and the s y stem board. [...]

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 NCH Base Memory The amount of base memory that tested successfully. NCH Extended The amount of extended memor y that tested successfully. Memor y test[...]

5-8 Troubleshooting and Repair Run-time Error Messages The following table lists run-time error messages. Table 5-4 Run-time Error Messages Message Cause Action I/O card parit y interrupt at address . Type (S)hut off NCI, (R)eboot, other ke y s to continue Memor y on a peripheral card has failed. Check the memor y cards installed in the system. Mem[...]

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 Corrective Actions No power Check that the AC adapter is plu gg ed into the power connector of the s y stem. Also, that the AC adapter is plu[...]

5-10 Troubleshooting and Repair Table 5-5 Quick Troubleshooting (cont’d) Problem Corrective Actions System halts during boot sequence Check condition of selected bootload device (diskette or hard disk) for bad boot track or incorrect OS files. Tr y bootin g from a new bootable diskette and recopy or repartition hard disk. Check for an y BIOS erro[...]

Troubleshooting and Repair 5-11 Table 5-5 Quick Troubleshooting (cont’d) Problem Corrective Actions PCMCIA card does not work Check the PCMCIA driver installation for an y IRQ or IO address conflict. Check if the PCMCIA card is inserted properl y and all connections are set. Replace the PCMCIA card. Check for work around for the card being used. [...]

A ppendix 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. NOTE: The letter “ I ” under the Hex Mode col [...]

A-2 Video Modes Table A-2 VGA Standard Modes (Graphics Mode) Hex Mode No. of Colors Text Display Font Size Pixel Reso- lution Dot Clock MHz Horiz. Freq. KHz Vert. Freq. Hz 4 4 40 x 25 8 x 8 320 x 200 25.175 31.5 70 5 4 40 x 25 8 x 8 320 x 200 25.175 31.5 70 6 2 80 x 25 8 x 8 640 x 200 25.175 31.5 70 Table A-3 VGA Standard Modes (Planar Mode) Hex Mo[...]

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 Mode No. of Colors Text Display Font Size Pixel Resolution Dot Clock MHz Horiz. Freq. KHz Vert. Freq. Hz 60 16 132 x 25 8 x 16 1056 x 400 40.0 30.5 68 61 16 132 x 50 8 x[...]

A-4 Video Modes Table A-9 VGA Extended Modes (16-Bit Linear Mode) - 1MB Video Memory Only Hex Mode No. of Colors Text Display Font Size Pixel Reso- lution Dot Clock MHz Horiz. Freq. KHz Vert. Freq. Hz 41 64K 80 x 30 8 x 16 640 x 480 50.350 31.5 60 Table A-10 VGA Extended Modes (24-Bit Linear Mode) Hex Mode No. of Colors Text Display Font Size Pixel[...]

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) Hex Mode No. of Colors Text Display Font Size Pixel Reso- lution Dot Clock MHz Horiz. Freq. KHz Vert. Freq. Hz 30 256 80 x 30 8 x 16 640 x 480 31.5 37.5 75 32* 256 100 x 37 8 x 16 800 x 600 49.5 46.9 75 Tabl[...]

BATTERY REPLACEMENT A CMOS cl o ck batt ery i n y o ur co m put er mai ntai ns sy st em co nf i gurat ion i nf o r m at i o n. I n t he even t t h a t t he ba t t er y fa ils t o main t a in s ys t e m c o nfig u r a t io n in fo r ma t io n, N E C r e c o mme nd s t h a t yo u r e - place the battery. Have an authorized NEC service representative [...]

Index A AC adapter connecting, 1-9 AC power adapter, 3-10 AC/DC adapter specifications, 2-16 B Battery removing, 1-8 Battery charger specifications, 2-15 Battery compartment latch, 1-13 Battery compartment release lock, 1-8 Battery packs handling, 4-2 Battery specifications, 2-14 Battery types, 1-8 BIOS, 3-2 BIOS informational messages, 5-7 BIOS Se[...]

Index-2 I I/O board specifications, 2-10 I/O subsystem, 3-6 Illustrated Parts Breakdown (IPB), 4-13 Intel P54CSLM, 3-3 K Keyboard, 1-5 Keyboard controller, 3-8 Keyboard specifications, 2-16 L LCD cover switch, 1-4 LCD inverter board, 3-11 LCD quality maintaining, 4-3 LED indicator board specifications, 2-9 LED status indicators, 2-13 M Memory DRAM,[...]

Index-3 T Technical support contacting, 5-1 Transfer board specifications, 2-8 Troubleshooting checklist, 5-3 V VersaGlide subsystem, 3-10 VGA extended modes, A-3 VGA high refresh modes, A-5 VGA port, 1-11 VGA standard modes, A-1 VGA VESA driver diskette, 1-11 Vibration specifications, 2-22 Video controller, 3-7 features, 3-7 Video modes, A-1 Y Y-a[...]