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NEC Versa 2600 Series Service Guide
Art Copy Version
PROPRIETARY NOTICE AND LIABILITY DISCLAIMER
The information disclosed in this document, including all designs and related materials, is the valuable property of NEC Computer Systems Division, Packard Bell NEC, Inc. (NECCSD, PBNEC) and/or its licensors. NECCSD and/or its licensors, as appropriate, reserve all patent, copyright and other proprietary rights to this document, including all design, manufacturing, reproduction, use, and sales rights thereto, except to the extent said rights are expressly granted to others. The NECCSD product(s) discussed in this document are warranted in accordance with the terms of the Warranty Statement accompanying each product. However, actual performance of each such product is dependent upon factors such as system configuration, customer data, and operator control. Since implementation by customers of each product may vary, the suitability of specific product configurations and applications must be determined by the customer and is not warranted by NECCSD. To allow for design and specification improvements, the information in this document is subject to change at any time, without notice. Reproduction of this document or portions thereof without prior written approval of NECCSD is prohibited.
NEC is a registered trademark of NEC Corporation; Versa is a U.S. registered trademark of NEC Technologies, Inc.; all are used under license by NEC Computer Systems Division (NECCSD), Packard Bell NEC, Inc. All other product, brand, or trade names used in this publication are the trademarks or registered trademarks of their respective trademark owners.
First Printing -- May 1997 Copyright 1997 NEC Computer Systems Division, Packard Bell NEC, Inc. 1414 Massachusetts Avenue Boxborough, MA 01719 All Rights Reserved
iii
Contents
Preface......................................................................................................................... ix Abbreviations............................................................................................................... xi
Section 1 Technical Information
Hardware Overview -- Front.......................................................................................1-2 Liquid Crystal Display (LCD)................................................................................1-2 Power Button .......................................................................................................1-4 Power and Status LEDs ........................................................................................1-4 Keyboard ..............................................................................................................1-5 NEC VersaGlide ...................................................................................................1-5 CD-ROM Reader and Diskette Drive ....................................................................1-6 Hardware Overview -- Right Side ...............................................................................1-6 PC Card Slots .......................................................................................................1-7 Kensington Lock...................................................................................................1-7 Hardware Overview -- Left Side .................................................................................1-7 Hardware Overview -- Rear........................................................................................1-8 Infrared Port .........................................................................................................1-8 Keyboard/Mouse Port ...........................................................................................1-8 Expansion Port .....................................................................................................1-8 Monitor (Video) Port ............................................................................................1-8 Parallel Port (LPT1)..............................................................................................1-8 Serial Port (COM1) ..............................................................................................1-9 AC/DC Power Port ...............................................................................................1-9 Hardware Overview -- Internal Components ...............................................................1-9 Battery Pack .........................................................................................................1-9 Hard Disk Drive....................................................................................................1-10 Diskette Drive.......................................................................................................1-10 10x CD-ROM Reader ...........................................................................................1-10 CPU Board ...........................................................................................................1-11 Sound Board.........................................................................................................1-12 I/O Board .............................................................................................................1-13 Bridge Battery ......................................................................................................1-13 System Memory...........................................................................................................1-14 Memory Map ........................................................................................................1-14 System Video...............................................................................................................1-15
iv
Contents
Parallel Interface ..........................................................................................................1-15 Serial Interface.............................................................................................................1-16 NEC Versa Chip Set ....................................................................................................1-16 Intel Pentium P55CLM Microprocessor ................................................................1-16 256K X Flash ROM ..............................................................................................1-16 ROM BIOS....................................................................................................1-17 VGA Controller ....................................................................................................1-17 Keyboard Controller .............................................................................................1-18 PC Card Controller ...............................................................................................1-18 Sound Integrated Circuit .......................................................................................1-18 Interrupt Controllers .............................................................................................1-19 Power Management Overview .....................................................................................1-20 System Power Management ..................................................................................1-21 Local Power Management.....................................................................................1-21 Plug and Play...............................................................................................................1-21 Specifications...............................................................................................................1-22
Section 2 Setup and Operation
Unpacking the System..................................................................................................2-1 Hardware Setup ...........................................................................................................2-1 Cable Connections ................................................................................................2-3 Power Sources.............................................................................................................2-4 Using the AC Adapter...........................................................................................2-4 Using the Main Battery Pack.................................................................................2-5 Installing the Battery Pack..............................................................................2-5 How to Recharge the Battery Pack.................................................................2-6 Battery Handling...................................................................................................2-6 Replacing the Battery Pack ............................................................................2-7 Battery Life...........................................................................................................2-8 Extending Battery Life ...................................................................................2-8 Battery Charging............................................................................................2-9 Battery Precautions........................................................................................2-9 Battery Disposal.............................................................................................2-10 Internal Batteries...................................................................................................2-10 Extending Battery Life ..........................................................................................2-10 Operating Controls ......................................................................................................2-11 Status Icons and LEDs..........................................................................................2-12
Contents
v
Status Icons ...................................................................................................2-12 Function Keys (Fn Keys).......................................................................................2-13 Updating the System BIOS ............................................................................2-13 Power-On Self -Test (POST) .......................................................................................2-14 POST Errors.........................................................................................................2-15 Setup Utility ................................................................................................................2-16 Setup Utility..........................................................................................................2-17 How to Enter Setup .......................................................................................2-17 How to Use Setup..........................................................................................2-17 The Setup Screen...........................................................................................2-17 Using Keys ...........................................................................................................2-18 Checking/Setting System Parameters..............................................................2-19 Using Power Management ....................................................................................2-25 Power Saving Modes .....................................................................................2-25 Power Management Settings ..........................................................................2-26 Using Fn-F3 ...................................................................................................2-26
Section 3 Troubleshooting
Quick Troubleshooting ................................................................................................3-1 Helpful Questions ........................................................................................................3-4
Section 4 Field Service Guidelines
Preventive Maintenance ...............................................................................................4-1 Cleaning the Notebook Exterior ............................................................................4-2 Cleaning the Notebook Interior .............................................................................4-2 Protecting the Disk Drives ....................................................................................4-2 Handling the Battery Packs ...................................................................................4-3 Maintaining the LCD Quality ................................................................................4-3 Disassembly and Reassembly........................................................................................4-4 Required Tools and Equipment ............................................................................4-5 Battery Pack .........................................................................................................4-5 Hard Disk Drive....................................................................................................4-6 Keyboard ..............................................................................................................4-7 Heat Shield and CPU Board..................................................................................4-9 LCD and Top Cover .............................................................................................4-11 VersaGlide Assembly ............................................................................................4-13 Sound Board.........................................................................................................4-14
vi
Contents
LED Status Board and IR Board...........................................................................4-14 10X CD-ROM Reader and Heat Shield .................................................................4-14 Bridge Battery and Diskette and Hard Drive Connector Board..............................4-16 Diskette Drive.......................................................................................................4-17 Power Board.........................................................................................................4-18 Main Board...........................................................................................................4-18 Reassembly ..........................................................................................................4-18 Illustrated Parts Breakdown.........................................................................................4-18 Service Information......................................................................................................4-22 Technical Support ........................................................................................................4-22 Product Information.....................................................................................................4-23 Ordering Information from FaxFlash ............................................................................4-23
Appendix A Connector Locations and Pin Assignments
Appendix B Video Modes
List of Figures
1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10 2-1 2-2 2-3 2-4 2-5 2-6 2-7
NEC Versa 2600 Series Notebook ................................................................. Front View..................................................................................................... Keyboard Layout ........................................................................................... VersaGlide Location ...................................................................................... Right Side Features ........................................................................................ Left Side Features .......................................................................................... Rear Features................................................................................................. CPU Board Layout ........................................................................................ Sound Board Layout ...................................................................................... I/O Board ...................................................................................................... AC Adapter ................................................................................................... Powering On the System ................................................................................ Power and I/O Connector Locations .............................................................. NEC Versa AC Adapter................................................................................. Battery Release Latch ................................................................................... Inserting Battery Pack.................................................................................... Panel LEDs and Controls ...............................................................................
1-1 1-3 1-5 1-6 1-6 1-7 1-8 1-11 1-12 1-13 2-1 2-2 2-3 2-4 2-7 2-8 2-11
Contents
vii
2-8 4-1 4-2 4-3 4-4 4-5 4-6 4-7 4-8 4-9 4-10 4-11 4-12 4-13 4-14 A-1 A-2 A-3
Status Icons ................................................................................................... 2-12 Releasing the Battery Pack............................................................................. Removing the Hard Disk Drive (Step1) .......................................................... Removing the Hard Disk Drive (Step 2) ......................................................... Removing the Hard Disk Drive (Step 3) ......................................................... Removing the Keyboard................................................................................. Removing the Heat Sink/Shield Subassembly ................................................. Removing the CPU Board.............................................................................. Removing the LCD Assembly (Step 1) ........................................................... Removing the LCD Assembly (Step 2) ........................................................... Disconnecting VersaGlide Cables ................................................................... Removing the CD-ROM Reader..................................................................... Removing the CD-ROM Reader Assembly Screws......................................... Removing the Bridge Battery and Diskette and Hard Drive Connector Board. NEC Versa 2600 Series Illustrated Parts Breakdown...................................... 4-5 4-6 4-6 4-7 4-8 4-9 4-10 4-11 4-12 4-13 4-15 4-15 4-17 4-19
CPU Board Layout ........................................................................................ A-1 Main Board Layout ........................................................................................ A-2 Sound Board Layout ...................................................................................... A-3
List of Tables
1-1 1-2 1-3 1-4 1-5 1-6 1-7 2-1 2-2 2-3 2-4 2-5 2-6 2-7
Model Configurations NEC Versa 2600 Series............................................... 1-2 Memory Map ................................................................................................. 1-14 NEC Versa 2600 Series Chip Types and Technologies ................................... 1-16 Interrupt Controllers ...................................................................................... 1-19 DMA Channel................................................................................................ 1-20 Automatic Power-Saving Features ................................................................. 1-20 Specifications................................................................................................. 1-22 I/O Connector Descriptions............................................................................ Control and Switch Functions ........................................................................ Fn Key Operations ......................................................................................... POST Error Messages.................................................................................... Setup Key Functions ...................................................................................... Setup Parameters ........................................................................................... Automatic Power-Saving Features ................................................................. 2-3 2-11 2-13 2-15 2-18 2-19 2-26
viii
Contents
3-1 4-1 4-2 4-3 A-1 A-2 A-3 A-4 A-5 A-6 A-7 A-8 A-9 B-1 B-2 B-3
Quick Troubleshooting................................................................................... 3-1 NEC Versa 2600 Series Disassembly Sequence .............................................. 4-4 NEC Versa 2600 Series Field-Replaceable Parts............................................. 4-20 NEC Service and Information Telephone Numbers......................................... 4-22 CPU Board Connector ................................................................................... Main Board Connectors ................................................................................. Sound Board Connectors ............................................................................... Keyboard/Mouse Connectors ......................................................................... Serial Port Connector Pin Assignments .......................................................... CRT Connector Pin Assignments ................................................................... Parallel Printer Pin Assignments ..................................................................... Power Connector ........................................................................................... Hard Disk Drive Connector............................................................................ A-1 A-2 A-3 A-3 A-4 A-4 A-5 A-5 A-6
LCD Display Mode Setting (800x600 TFT Color LCD and Simultaneous CRT Display)..................................................................... B-1 CRT Display Mode (CRT Only)..................................................................... B-3 Panning Video Mode (800x600 TFT Color LCD and Simultaneous CRT Display) ........................................................................... B-4
ix
Preface
This service and reference manual contains the technical information necessary to set up and maintain the following NEC Versa® 2600 Series models:
T NEC Versa 2630CD T NEC Versa 2635CD T NEC Versa 2650CD T NEC Versa 2655CD T NEC Versa 2650CDT T NEC Versa 2655CDT.
The manual also provides hardware and interface information for users who need an overview of the system design. The manual is written for NEC-trained customer engineers, system analysts, service center personnel, and dealers. The manual is organized as follows: Section 1 Technical Information, provides an overview of the hardware and interface components. System specifications are listed including computer dimensions, weight, environment, safety compliance, power consumption, and system memory specifications. Section 2 Setup and Operation, takes the authorized service technician or dealer from unpacking to setup and operation. The section includes a description of operating controls, setting parameters and accessing the NECCSD bulletin board system (BBS). Section 3 Troubleshooting, lists troubleshooting procedures as well as helpful servicing hints. Section 4 Field Service Guidelines, provides disassembly and assembly procedures, and an exploded-view diagram of the NEC Versa system with part numbers. Appendix A Connector Locations and Pin Assignments, provides a list of the main board internal connector pin assignments and a list of external pin assignments. Appendix B Video Modes, lists NEC Versa supported video modes. An Index is included for convenience.
Section 1
Technical Information
The NEC Versa 2600 Series notebook computers are lightweight, compact, and fully IBM compatible. The latest additions to the NEC Versa 2600 family include the following models:
T NEC Versa 2630CD T NEC Versa 2635CD T NEC Versa 2650CD T NEC Versa 2655CD T NEC Versa 2650CDT T NEC Versa 2655CDT.
This service manual covers the NEC Versa 2630CD, 2635CD, 2650CD, 2655CD, 2650CDT, and 2655CDT models only. All figures in this manual reflect these models.
NOTE
Figure Section 1-1
NEC Versa 2600 Series Notebook
This section of the manual provides system configuration information, including an overview of hardware and interface components. See the following table for a system specific breakdown of each model's hardware.
1-2
Technical Information
Table Section 1-1
Feature CPU (Pentium) On-Board RAM Video Memory Hard Disk Drive CD-ROM Reader Color LCD (12.1") Battery 2630CD P54CSLM 133 MHz 16 MB 1.5 MB 1.44 GB 10X SVGA , DSTN2 NiMH
1
Model Configurations NEC Versa 2600 Series
2635CD P55CSLM 133 MHz 16 MB 1.5 MB 1.44 GB 10X SVGA , DSTN2 NiMH
1
2650CD P55CL, 150 MMX 16 MB 1.5 MB 1.44 GB 10X SVGA , DSTN2 NiMH
1
2655CD P55CL, 150 MMX 16 MB 1.5 MB 1.44 GB 10X SVGA , DSTN2 NiMH
1
2650CDT P55CL, 150 MMX 16 MB 1 MB 1.44 GB 10X SVGA , TFT3 LiIon
1
2655CDT P55CL, 150 MMX 16 MB 1 MB 1.44 GB 10X SVGA1, TFT3 LiIon
1. Super VGA (SVGA) color display 2. Dualscan Super-Twisted Nematic (DSTN) 3. Thin Film Transistor (TFT)
HARDWARE OVERVIEW--FRONT
Take a moment to become familiar with the location and function of controls located on the front of the system.
Liquid Crystal Display (LCD)
The LCD operates with the Chips & Technologies 65550B VGA controller. The controller supports Super VGA, uses a 64 bit accelerator with a Peripheral Component Interconnect (PCI) interface. The LCD also supports VESA timing. The NEC Versa 2630CD, 26535CD, 2650CD and 2655CD LCD features the following:
T 12.1-inch Dual-STN, Cold Cathode Fluorescent Tube (CCFT) Super VGA color
LCD
T 0.30 mm dot pitch T 16-bit digital interface T 800 x 600 resolution T 64,000 colors T Slide bar that adjust screen contrast.
The NEC Versa 2650CDT and 2655CDT features the following:
T 12.1-inch active-matrix Thin Film Transistor (TFT), Super VGA (SVGA) backlit
color LCD
T 0.3 mm dot pitch
Technical Information
1-3
T 18-bit digital interface T 800 x 600 resolution T 64,000 colors T Slide bar that adjust screen brightness.
Additional LCD panel features include a slide switch which controls adjusts screen brightness.
LCD Panel LCD Slide Bar Power Button
NEC
Status LEDs VersaGlide
Speaker Microphone
Speaker Hard Drive
Battery Bay
CD-ROM Reader
Diskette Drive
Figure Section 1-2
Front View
Another video feature includes a CRT port on the system's rear panel that allows the user to connect an optional monochrome or color external display to the system. The computer can support the LCD and external display simultaneously.
1-4
Technical Information
Power Button
Press the power button to power on and power off the computer. The power button is a "smart" switch, meaning that it recognizes when the system is in Suspend mode. If in Suspend mode, you cannot power off until you press the power button again to bring the system out of Suspend mode, then you are able to power off.
Power and Status LEDs
The Power and Status LEDs are situated right below the LCD. They provide an easy way to detect system status. Power and Status LEDs (identified by icons) are found to the right of the Power button and inform you of the status of your system and its components. Status LEDs have the following meanings and light under the conditions noted:
Power
Hard Disk Drive
CD-ROM Reader
Diskette Drive
A
Caps Lock
Num Lock
Pad Lock
Battery
Status LED icons
T Power Lets you know that power to the system is turned on. This LED is positioned so that you see the power state whether the LCD panel is opened or closed lights green when the system is powered on. lights amber when battery power is below 10%. flashes amber when battery power is below 5%.
!
CAUTION
Be sure to save your data immediately when the Power LED turns to yellow, flashes yellow, or the system beeps. Failure to do so can result in data loss.
T Hard Disk Drive Lights when the NEC Versa 2600 writes data to or retrieves
data from the hard disk drive.
T CD-ROM Reader Lights when data is read from a compact disc in the CDROM drive.
Technical Information
1-5
T Diskette Drive Lights when data is written to or retrieved from the 3.5-inch
diskette drive.
T Caps Lock Lights when Caps Lock mode is in effect. T Num Lock Lights when Num Lock mode is active. T Pad Lock Lights when the embedded numeric keypad lock is on. T Battery Charging Status Lights to indicate the following:
Green the battery is fully charged. Amber the battery is charging. Light Off the AC adapter is disconnected.
Keyboard
The built-in, 83-key keyboard (U.S.) or 79-key keyboard (UK and Germany) uses the standard QWERTY format. The keyboard provides 12 function keys and 7 cursor control keys, with an Fn key for ROM-based key functions. The numeric keypad is embedded in the standard key layout.
Function Keys
Esc
Setup
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
Pause
Break
PrtSc
SysReq
Ins
Del
! 1
Q Tab
@ 2
W
# 3
E
$ 4
R
% 5
T
^ 6
Y
& 7
7
U
* 8
8
I
( 9
9
O
) 0
P
_ {
+ =
} ] " Enter
PgDn
BkSp Scroll Lock |
Home
PgUp
4
Cap Lock A S D F G H J
5
K L
6
:
+
[
\
1
Z X C V B N M
2
<
3
> .
;
*
?
'
Shift
Shift
End
0
,
.
/
/
~
Fn
Ctrl
Alt
Alt
Ctrl `
Control Keys
Embedded Numeric Keypad
Cursor Control Keys
Figure Section 1-3
Keyboard Layout
NEC VersaGlide
The NEC VersaGlide is a built-in mechanism that functions as the system's mouse. It controls the on-screen pointer (cursor). To use the VersaGlide, move your finger across the NEC VersaGlide pad, and the cursor follows. The buttons below the NEC VersaGlide allow the user to select or deselect menu items. Tap and double-tap are supported on the VersaGlide pad. The PS/2 Microsoft mouse is the system's default pointing device, driver for the NEC VersaGlide. If an external mouse is installed, then the VersaGlide is deactivated. A serial mouse is not supported.
1-6
Technical Information
VersaGlide
Left Selection Button
Right Selection Button
Figure Section 1-4
VersaGlide Location
CD-ROM Reader and Diskette Drive
A 10X CD-ROM reader and 1.44-MB diskette drive come installed in the NEC Versa 2600 Series on the front of the computer.
HARDWARE OVERVIEW--RIGHT SIDE
Review the following section for a description of the hardware on the right side of the NEC Versa.
PC Card Slots
Kensington Lock Port
Figure Section 1-5
Right Side Features
Technical Information
1-7
PC Card Slots
The PC card slot compartment houses two Type II devices, or one Type II and one Type III devices. For Type III cards, insert the PC card into the upper slot. Insert the card with the pin sockets facing towards the drive and the label facing up. To remove the PC card, push on the Eject button to release the pin connections and slowly pull out the card. The NEC Versa also comes with DOS/Windows PC card drivers for supporting various PC cards like modem and network cards in Windows for Workgroups configurations.
Kensington Lock
The Kensington Lock Port gives the user the option to add an optional Kensington Lock.
HARDWARE OVERVIEW--LEFT SIDE
Review the following section for a description of the hardware on the left side of the NEC Versa.
Line In Headphones
Microphone
Volume Control Dial
Figure Section 1-6
Left Side Features
T Line-In -- Use a cable to connect to the Line-Out port on the other audio system
to record or play.
T Microphone (MIC) -- Connects an external microphone for monophonic recording or amplification through the unit. Plugging in an external microphone disables the built-in microphone.
T Headphones -- Connects external headphones or speakers to the NEC Versa.
Plugging in headphones disables the built-in system speakers.
T Volume Control -- Controls the speaker or headphone volume.
1-8
Technical Information
HARDWARE OVERVIEW--REAR
Review the following section for a description of the hardware on the rear of the NEC Versa.
Port Replicator Latch
IR Port
Keyboard Mouse Port Expansion Port Monitor Port Parallel Port Serial Port
AC Power Port
Figure Section 1-7
Rear Features
Infrared Port
This port lets you transfer files between your NEC Versa and an IR-equipped desktop or notebook computer. You can also print to an IR-equipped printer without using cables.
Keyboard/Mouse Port
Use the standard PS/2 port to connect an external PS/2-style mouse or a PS/2-style keyboard to the system. A serial mouse is not supported through this connector nor is a Yadapter.
Expansion Port
This port provides a connection for NEC Versa options including the NEC Versa Port Replicator 2600.
Monitor (Video) Port
Use this 15-pin port to attach an external monitor to your NEC Versa. You can run the LCD display and the external monitor simultaneously or run either alone.
Parallel Port (LPT1)
The 25-pin printer port provides a parallel interface to which you can connect a parallel printer or pocket network adapter. Use this port to connect a parallel printer or other parallel device. The port is IEEE 1284 compatible. It supports bi-directional (AT) mode, Enhanced Capabilities Port (ECP) mode, Enhanced Parallel Port (EPP) mode, (365SLcompatible), and bi-directional (PS/2) mode.
Technical Information
1-9
The parallel port's default is PS/2 mode. Use Setup to change the default to one of the following.
T Standard T EPP T ECP
Serial Port (COM1)
The 9-pin serial port provides a serial interface to which you can connect an RS-232C device such as an external serial printer or modem. A serial mouse is not supported.
AC/DC Power Port
Use the power jack to attach the NEC Versa to an appropriate DC power source, such as the NEC Versa 2600 AC adapter or the optional NEC Versa 2600 DC car adapter.
HARDWARE OVERVIEW--INTERNAL COMPONENTS
Review the following sections for a description of the system's internal hardware.
Battery Pack
The system uses a rechargeable lithium-ion (Li-Ion) battery or rechargeable nickel metalhydride (NiMH) as its transient power source. The battery pack installs in the compartment next to the CD ROM reader on the front of the NEC Versa. The Li-Ion battery stores 14.4 volts with a 2700 mAh capacity and the NiMH stores 9.6 volts with a 3500 mAh capacity. The battery pack powers the NEC Versa for approximately 1:40 to 4 hours depending on battery type and power management choice. When battery power is getting low, connect the AC adapter to a wall outlet and recharge the battery. It takes 3 to 4 hours to recharge the battery.
1-10
Technical Information
Hard Disk Drive
A removable 2.5-inch, 1.44-GB hard disk drive ships with the system. The 1.44-GB hard disk drive specifications are listed next. The 1.44-GB hard disk drive specifications are listed next.
T Track-to-track seek rate -- 4 ms T Average seek time -- 13 ms (read), 14 ms (write) T Revolutions per minute -- 4009 T Data transfer rate -- 16.6 MB/sec T Media data rates -- 39.6 - 61.8 bit/sec
Diskette Drive
The 3.5-inch 1.44-MB diskette drive is located in the front right of the system.
10X CD-ROM Reader
A 10X CD-ROM reader ships with all NEC Versa 2600 Series models. This ten-speed CDROM reader features the latest in CD-ROM technology. It is located in the front center of the system. The CD-ROM reader operates at different speeds depending on whether the CD in use contains data or music. This improves video and sound quality.
Technical Information
1-11
CPU Board
The CPU board is an L-shaped board situated under the keyboard. The NEC Versa 2630CD and 2635CD models ship with Intel's P54CSLM/133 MHz with 66 MHz bus speed. Modes 2650CD, 2655CD 2650CDT and 2655CDT ship with P55CLM/150 MHz MMX with 60 MHz bus speed.
Figure Section 1-8
CPU Board Layout
1-12
Technical Information
Sound Board
The sound board provides the NEC Versa system with its audio capabilities via line-in and headphone/microphone jacks. It is situated on top of the I/O board. The sound board integrates the following features.
Figure Section 1-9
Sound Board Layout
Technical Information
1-13
I/O Board
The system I/O board contains peripheral subsystems including serial, parallel and video ports, PC card controller and charger.
Figure Section 1-10
I/O Board layout
Bridge Battery
The NiMH battery (3.6 Volts, 60 mAh capacity) is attached to CN23 on the underside of the Main board. It provides battery backup and prevents data loss in the system's complementary metal oxide semiconductor (CMOS) RAM. This memory area contains information on the system's configuration like date, time, drives, and memory. The bridge battery also provides power for main battery swapping, while in suspend mode. The bridge battery lasts approximately two years.
1-14
Technical Information
SYSTEM MEMORY
The system board provides 16-MB of standard random access memory (RAM). Optional memory DIMMS with a value of 8-, 16-, or 32-MB can be added to increase system memory up to a maximum of 80-MB (70ns Fast Page access or HyperPage access). The DIMMS must be added in pairs of the same capacity. In addition, 256-KB of read-only memory (ROM), 1 x 28F020, enables the system BIOS to be flashed. The system provides 1-MB (TFT models) or 1.5-MB (DSTN model) of video RAM (60ns HyperPage mode, self refresh). The following Cache RAM is provided:
T L1:
16KB (Internal Pentium P54C-133) 32KB (Internal Pentium P55C-150MMX)
T L2: 256 KB PipeLineBurst-SRAM.
Memory Map
The system supports system and video shadowing, both controlled through complementary metal oxide semiconductor (CMOS). The system supports BIOS as a cacheable area with write protection. Table Section 1-2 lists the system memory map.
Table Section 1-2
Memory Space 0000000h-0009FFFFh 00A0000h-000B7FFF 00B8000h-000BFFFFh 00C0000h-000C9FFF 00CA000h-000CFFFFh 00D0000h-000DFFFFh 00E0000h-000FFFFFh 0000000h -00FFFFFFh 0000000h -FFFEFFFFh Size 640 KB 96 KB 32 KB 40 KB 24 KB 64 KB 128 KB 16 MB 80 MB
Memory Map
Function DOS Applications & Optional Memory Space Gap Video (VGA) Graphic Memory Text Mode Memory (SMM Space) Video (VGA) BIOS PnP BIOS / PCI BIOS Setup / PCMCIA Window (Extended Memory or Upper Memory Block) System BIOS ROM Total Base Memory Total Extension Memory
Technical Information
1-15
SYSTEM VIDEO
The system's LCD operates using the Chips and Technologies 65550B VGA Controller. Video signals travel from the controller through the system's 15-pin D-SUB connector using 5 volts. System video integrates a PCI-bus interface. The system ships with 1 MB on TFT units and 1.5MB on DSTN of Video RAM (VRAM). It supports video modes up to 800 x 600 with 64K colors in LCD mode. See Appendix B for a list of Video modes.
PARALLEL INTERFACE
The system's parallel interface integrates National Semiconductor's PC87336VJG Peripheral I/O chip with a 25-pin D-subconnector. The port is located on the system's rear panel. The modes of operation available for a PC87336VJG chip are:
T compatibility mode T nibble mode T byte mode T Extended Capabilities Port (ECP) T Enhanced Parallel Port (EPP).
The user selects between three parallel interface modes using Auto Setup. These include unidirectional, bi-directional or enhanced. Unidirectional mode sends data output from the standard ISA port only. Bi-directional mode sends data using the standard ISA port or PS/2 technology. Enhanced mode enables high speed data transmission to occur using either the unidirectional or bi-directional modes. The default parallel port address is 378h and the interrupt level is IRQ07. Pin locations for the parallel interface are listed in Appendix A.
1-16
Technical Information
SERIAL INTERFACE
The RS-232C serial port is a 9-pin connector on the system's rear panel. The serial port consists of a 16550A compatible serial port controller with a programmable baud rate up to 115,200 bps. The serial port connects an RS-232C device or an external modem. The default serial port address is 3F8h and the interrupt level is IRQ04.
NEC VERSA CHIP SET
Refer to Table Section 1-3 for a quick summary of the chip types used in the system. See the Abbreviations section at the beginning of this manual for a translation of chip technologies acronyms.
Table Section 1-3 NEC Versa 2600 Series Chip Types and Technologies
Chip Manufacturer Description 133 MHz CPU 150MMX 256k x 8 Flash ROM System Controller Data Path Controller PCI IDE ISA Xcelerator Diskette Controller, IDE, Parallel Interface Keyboard Controller VGA Controller PC Card Controller Sound Controller Technology 320-pin TCP 320-pin TCP 32-pin TSOP 208-pin TQFP 176-pin TQFP 208-pin TQFP 100-pin QFP 100-pin TQFP 208-pin FQFP 208-pin PQFP 100-pin PQFP
Intel Pentium P54CSLM Intel Intel Pentium P55CL Intel N28F020-150 82C557M 82C556M 82C558E PC87336VJG H8/3434 C&T 65550B OZ6730D ESS1688 Intel Opti Viper N+ Opti Viper N+ Opti Viper N+ National Semiconductor Hitachi Chips & Technologies O2 Micro ESS
Intel Pentium P55CLM Microprocessor
The 133 MHz Intel Pentium microprocessor used in the NEC Versa series computer is built on Intel's advanced 3.3V BiCMOS silicon technology. The CPU has power management features. NEC adopted the chip specifically for its pipelined Floating Point Unit (FPU), and local interrupt management.
256K X Flash ROM
The N28F020 flash ROM is a 40-pin, (TSOP). The chip allows easy updates to the system's BIOS if needed. More specifically, the ROM is flashed electronically, installing the latest BIOS revisions to the system. It is possible to reprogram the BIOS up to 100,000 times. See Section 2, Setup and Operation, for BIOS update procedures.
Technical Information
1-17
The N28F020 provides the system upgrade capability as well as the following: T 256 KB memory
T Quick-Pulse Programming Algorithm T 150 nanoseconds (ns) maximum access time T ETOX Nonvolatile flash technology T CMOS low power consumption
ROM BIOS
The system uses a Flash ROM known as the system's ROM BIOS to store machine language programs. The BIOS size is 256 KB, consisting of the system utility (for PC cards, Auto Setup), system BIOS, video BIOS, and power management. The BIOS programs execute the power-on self-test (POST), initialize CPU controllers, and interact with the LCD indicator panel, diskette drive, hard drive, communication devices and peripherals. The system BIOS also contains Auto Setup and provides VGA controller support. The ROM BIOS is copied into RAM (shadowing) for optimum performance. The ROM BIOS contains both the system and video BIOS. The system BIOS is located in the upper portion of the device, video BIOS is located in the lower portion. System BIOS is located between F000h-FFFFh. The BIOS often changes after the product release to provide enhanced features or bug fixes. To acquire the latest BIOS release, the ROM is flashed electronically allowing the BIOS update to occur without removing the ROM. See Section 2, Setup and Operation, for BIOS upgrade procedures.
VGA Controller
The Chips and Technologies 65550B is a PCI 64-bit Graphics Accelerator. The integrated programmable linear address feature accelerates the graphics user interface (GUI) performance. The controller also supports Hardware Multimedia and VESA interface standards. The controller provides advanced power management that helps to minimize power usage in:
T normal operation T Standby (sleep) mode T panel off power saving modes.
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Technical Information
Keyboard Controller
The keyboard controller (H8/3434) supports a PS/2-style keyboard, mouse and password security feature. Refer to Appendix A for keyboard interface connector pin assignments. When data is written to the output buffer, the controller generates an interrupt, and requests the CPU to receive the data. The controller automatically adds an even parity bit to the data sent and waits for a response. The device must acknowledge that the data was successfully received by sending a response to the controller for each byte of data received.
PC Card Controller
The O2 Micro OZ6730D controller with the PCI bus, PC CardBus socket and configuration registers to provide:
T compliant with PCI 2.1 and 1995 PC card standards T PC Card slots with hot insertion and removal T independent Read and Write buffers for each direction
Sound Integrated Circuit
The ESS1688 chip is a single combo chip. This dynamic audio circuitry provides the following:
T ISA 16-bit bus interface chip T audio digital processor T Plug and Play support T high performance 16-bit Sigma Delta Stereo Codec T Sound BlasterTM 16 register compatible mixer with AGC T built-in analog joystick quad timer.
Technical Information
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Interrupt Controllers
Using interrupts, it is possible to change the system's code sequence. To change the sequence, reassign the interrupt-levels. Fifteen interrupts can be used with a cascade connection of two 82C59 interrupt controllers. Interrupt-level assignments 0 through 15 are listed in Table Section 1-4, in order of decreasing priority. These assignments can be adjusted by PnP function.
Table Section 1-4
Controller Master/Slave Master Master Master Slave Slave Slave Slave Slave Slave Slave Master Master Master Master Master Master Priority 1 2 310 4 5 6 7 8 9 10 11 12 13 14 15
Interrupt Controllers
Device System Timer Keyboard Second Interrupt Controller PCMCIA Modem Card (default) COM1 (Internal serial port) Sound Chip, MIDI (default) Floppy Disk Drive Controller LPT1 Default (internal printer port) Real Time Clock MIDI Not used Not used Internal Glide Pointer or External PS/2 Mouse Co-Processor Hard Drive CD-ROM
Name IRQ00 IRQ01 IRQ02 IRQ03 IRQ04 IRQ05 IRQ06 IRQ07 IRQ08 IRQ09 IRQ10 IRQ11 IRQ12 IRQ13 IRQ14 IRQ15
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Technical Information
Table 1-5
DMA Channel DMA0 DMA1 DMA2 DMA3 DMA4 DMA5 DMA6 DMA7
DMA Channel
Assigned Device Enhanced Printer Port Sound Chip (default) FDD Controller Not Used Cascade from DMA Controller, P Not Used Not Used Not Used
POWER MANAGEMENT OVERVIEW
Power Management in the NEC Versa lets you conserve energy, save battery power, extend the life of your LCD backlight, and protect against data loss due to low battery power. Set some features to function automatically or activate them manually with the keyboard or a button. It is wise to keep Power Management features enabled, even when using AC power. The system arrives set up with many power-saving features already enabled. See the following table.
Table Section 1-6
Device Video Hard Disk Standby Default Timeout 2 minutes 15 seconds 2 minutes
Automatic Power-Saving Features
Comment Video turns off after there is no keyboard or VersaGlide input for the specified timeout. Hard disk motor stops when hard disk is not accessed for specified timeout. System enters Standby mode after total system inactivity.
You can change the timeout period for any of the devices using Setup. See Section 2 for Setup utility procedures.
Technical Information
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System Power Management
The system power management consists of the following operation modes. These modes are:
T Active Mode In active mode, the system uses maximum power. It operates
with the default clock speed. The system continues to run at this speed unless overwritten by the power management features.
T Standby Mode The system switches automatically to Standby mode. This
eliminates unnecessary power consumption when you operate the system on battery power or AC. Standby mode shuts down the LCD panel, providing privacy as well as power savings.
T Suspend Mode Suspend mode causes the CPU power down, local devices to
shut down, and register values to be stored in RAM. The system resumes Active mode when you press the Power button or the system is set to resume at a certain time of day. Suspend mode lets you save power without first saving the working data. Press the Power button to enter Suspend mode when you need to be away from the system for a short period of time and want to return to where you left off.
Local Power Management
Use Auto Setup to select one of four power management settings for local devices. These include Maximum Battery Life, Good Battery Life, Good Performance, and Maximum Performance. The power management levels are also available during AC operation. The NEC Versa computer ships with Longest Battery Life as the default power management setting. See Section 2 for specific procedures on using Auto Setup to select the power management settings. When set to Maximum Battery Life, CMOS will set local device timeout values, a local stand-by timeout value, and a suspend timeout value to ensure the longest battery life. The Maximum Performance setting selects CMOS values that will provide minimal energy savings and a shorter battery life. The custom settings enable end-users to set the timeout values of their choice.
PLUG AND PLAY
The NEC Versa features Plug and Play functionality. Plug and Play is the ability of the BIOS and/or operating system to dynamically assign system resources to a newly installed device without user intervention. For example, you can suspend the system, add an external keyboard, mouse, or monitor, and when you resume working, the NEC Versa recognizes the devices that have been connected to it. Similarly, you can remove external devices in Suspend mode and the NEC Versa detects the status when resumed.
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Technical Information
SPECIFICATIONS
Table Section 1-7 provides a complete list of NEC Versa series system specifications.
Table Section 1-7 Specifications
Item Chassis Configuration Size Width: 11.7 in. (303 mm) Depth: 9.04 in. (229.5 mm) Height: 2.05-inch (52.0 mm) Weight: 6.8 to 7.3 lb (3.1 to 3.3 kg), Exact weight depends on LCD and battery type. Keyboard Device Slots PS/2 compatible, 86-key standard (79-key for UK and Germany) (includes Fn Key for ROM-based functions) Two PC Card slots that support up to two optional cardsoriented one on top of the other One 3 1/2-inch x 0.75-inch high slot, front access for standard hard disk drive Two memory connectors for optional memory DIMM's, located on the bottom of system. Power 100 to 240 Vac at 50 or 60 Hz Output Voltage -- 15 V DC, 1.8 A and 18V 1A) Battery Pack Li-Ion Weight .88 lb (400 Kg) Voltage 14.4 V Capacity 2700 mAH Battery Life Approximately 1hr 40min to 3 hours (depending on model and power management settings) Recharging Time Approximately 3 hours when the system is on or off Bridge Battery Backs up memory contents up to 1 hour with a fully charged battery in Suspend mode NiMH Weight 1.32 lb (400 Kg) Voltage 9.6V Capacity 3500 mAH Battery Life Approximately 2 hours to 4 hours (depending on model and power management settings) Recharging Time Approximately 3 hours when the system is on or off Specification
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Table Section 1-7 Specifications
Item Bridge Battery Specification Backs up memory contents up to 1 hour with a fully charged battery in Suspend mode Power Button/Suspend Button Brightness Control (TFT Model) Contract Control (DSTN Model) LEDs Power LED Hard Disk LED CD-ROM LED Diskette Drive LED Cap Lock LED NumLock LED Pad Lock Battery Battery Status LEDs System Board CPU Intel Pentium 133 MHz or 150MHz with 256 KB L2 cache pipeline burst SRAM, 64-bit Peripheral Component Interconnect (PCI) bus architecture and built-in numeric coprocessor 133 Mhz or 150 MHz 60 Mhz (150 MHz)
Front Panel Controls
Clock Speed CPU Bus Speed Flash ROM Connector Support
66.6 Mhz (133 MHz) 256 KB: E28F002BC-T1200 Serial -- 1 port, 9-pin D-sub
Infrared --1 on rear of system, IrDA-1 compatible VGA -- 1 port, 15-pin high-density D-sub External Keyboard/External Mouse -- 1 port, PS/2, 6-pin MiniDin (input facility will not support both devices at the same time) Expansion -- 1 port, 200 pins for optional NEC Port Replicator 2600 Mono MIC IN -- 1 port, 3-pin, Mini Pin Jack Stereo Headphones -- 1 port, 3-pin, Mini Pin Jack, .5 watts per channel Stereo Line-In -- 1 port, 3-pin, Mini Pin Jack DC In -- 1 port, for AC adapter cable
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Technical Information
Table Section 1-7 Specifications
Item Memory System Memory Optional 16 MB EDO (On PCB Board), 2 DIMM slots, RAM may be added only by inserting 2 DIMM cards of equal MB value. Expandable in 8-MB, 16-MB, 32-MB Maximum 80-MB Video RAM 1.0-MB TFT 1.5-MB DSTN Specification
Video Interface (VGA) NEC Versa 2650CDT and 2655CDT models 12.1-inch high resolution active matrix Thin Film Transistor (TFT), Super VGA (SVGA) backlit color LCD, 800 x 600 pixels resolution, 0.3 mm dot pitch, 64,000 colors NEC Versa 2530CD, 2635CD, 2650CD and 2655CD models 12.1-inch DSTN color LCD, 800 x 600 pixels, 0.3 mm dot pitch, 64,000 colors Internal Device Support Diskette Drive Hard Disk Drives 3 1/2-inch, 1.44-MB (thin-height) IDE interface (built-in), 2 1/2-inch x 1-inch high (thin-height) System ships with the 1.44-GB hard disk drive. 10x CD-ROM Reader External Device Support CRT Mouse Keyboard Displays up to 1024x 768 resolution x 256 colors PS/2-compatible mouse Built-in 85/86-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 Ten speed CD-ROM reader
Technical Information
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Table Section 1-7 Specifications
Item Software Standard Window 95, or MS-DOS version 6.22 Windows for Workgroups version 3.11 McAfee VirusScanTM McAfee WebScanTM Official Airline Guide (OAG ) PointCast Network Netscape Navigator LapLink Traveling Software VideoSaverTM (Separate CD) CardWizardTM (Windows for Workgroups Only) MediaMatics ArcadeTM MPEG Player (Win 95 Only) Xing MPEG Player (Windows for Workgroups Only) Microsoft Works (Windows 95 Only models) Microsoft Money (Windows 95 Only models) Return of Arcade (Windows 95 Only models) Microsoft Sampler (Windows 95 Only models) Microsoft Internet Explorer (Separate CD) MPEG Movie (Models 2655CD and 2655CDT only) Recommended Environment Temperature Operating Storage Transportation Humidity Operating Storage Transportation Max Wet Bulb Temperature Operating Storage Transportation 26°C 26°C 26°C 20%RH to 80%RH 10%RH to 80%RH 10%RH to 80%RH 41° to 104°F (5° to 35°C) (-20° to 60°C) (-20° to 60°C)
® ® ® ®
Specification
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Technical Information
Table Section 1-7 Specifications
Item Allowable Vibration Operation Drop Testing Packed Height: 90cm 10 - 15Kg 1 cornor, 3 edges, 6 faces Specification
5 to 150Hz, 0.25G, XYZ 3 Directions
Administrative Compliance U.S.: FCC, UL Canada: CSA, DOC Germany: VDE, TUV, CE Australia: AS for AC adapter only Other Compliance PC95 Compliance Energy Star VESA & PnP VESA PnP ISA Windows 95 Logo
Section 2
Setup and Operation
This section provides setup and operation information for the NEC Versa series system (including cabling, power-on verification and using the Setup utility, from this point on referred to as "Setup" only).
UNPACKING THE SYSTEM
Find an area away from devices that generate strong magnetic fields (electric motors, transformers, etc.). Place the shipping carton on a sturdy surface and carefully unpack the system. The carton contents include the system, AC adapter, AC power cord, battery, software CDs, and user documentation.
HARDWARE SETUP
When connecting power and signal cables, do the following.
Always plug the AC adapter cord into an easily accessible outlet.
1. The power switch turns the system on or off. Press to turn it on; press again to
NOTE
turn it off.
LED
AC Power Port AC Power Cable AC Adapter
Figure 2-1
AC Adapter
2. Connect the AC adapter cable to the power port on back of the NEC Versa.
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Setup and Operation
3. Plug one end of the AC power cable into the AC adapter and the other end into a
properly grounded 120- or 240-volt wall outlet.
Do not cover or place objects on the AC adapter. This will allow heat to dissipate properly.
4. Ensure that all connections are properly seated and secure.
NOTE
!
CAUTION
This equipment uses an ungrounded power cable. Replace the cord if it becomes damaged. U.S. and Canadian replacement cords must be ULapproved (CSA certified in Canada) type SPT-2, 18 AWG, 2-conductor cord with a permanently attached NEMA type 5-15P plug at one end, and a permanently attached connector body on the other. Cord length may not exceed 15 feet. Outside the U.S. and Canada the cord must be rated for at least 250VAC at 10 amps, and must indicate international safety agency approval. The plug must be a type appropriate for the country where it is used. Obtain replacement cords at an authorized service center. The replacement must be of the same type and voltage rating as the original cord.
5. Press the Power button to power on the computer.
LCD Panel LCD Slide Bar Power Button
NEC
Status LEDs VersaGlide
Speaker Microphone
Speaker Hard Drive
Battery Bay
CD-ROM Reader
Diskette Drive
Figure 2-2
Powering On the System
Setup and Operation
2-3
If operating the system on DC power, verify that the system has a charged battery pack installed.
NOTE
Cable Connections
Figure 2-3 shows the external connectors for the system. Where appropriate, secure cables by tightening the cable holding screws. Table 2-1 describes the I/O connectors on the rear of the system. For pin assignments, see Appendix A.
Port Replicator Latch
IR Port
Keyboard Mouse Port Expansion Port Monitor Port Parallel Port Serial Port
AC Power Port
Figure 2-3
Power and I/O Connector Locations
Table 2-1
I/O Connector IR Port Function
I/O Connector Descriptions
The infrared port allows the transfer of files between the NEC Versa and an IR-equipped computer, or printing to an IR-equipped printer without using cables. Connects to a PS/2-style mouse, or a 101-key, external PS/2-style keyboard. Provides a 200-pin connector to attach the optional NEC Port Replicator 2600. Connects to a 15-pin external CRT. Connects to a 25-pin parallel device. Connects to an RS-232C device.
Keyboard/Mouse Port Expansion Connector Monitor Port Enhanced Parallel Port Serial Port
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Setup and Operation
POWER SOURCES
The NEC Versa can be powered using two different sources, as follows:
T the AC adapter connected to an electrical wall outlet (using AC power) T the battery pack
The following sections summarize the power sources.
Using the AC Adapter
Use the AC adapter and power cable that came with the NEC Versa to run the computer on alternating current (AC) power, or to recharge the battery pack. Use the AC adapter whenever a wall outlet is nearby.
!
WARNING
Do not attempt to disassemble the AC adapter. The AC adapter has no user-replaceable or serviceable parts inside. Dangerous voltage in the AC adapter can cause serious personal injury or death. The AC adapter is intended for use with a computer. Both must meet EN60950 standards. Keep the adapter connected whenever possible. The AC adapter charges the battery whether or not you are using the NEC Versa.
Figure 2-4
NEC Versa AC Adapter
See the "Hardware Setup" earlier in this section for steps on connecting the AC adapter.
Setup and Operation
2-5
Using the Main Battery Pack
The NEC Versa 2600 Series system comes with either of two rechargeable batteries: a Nickel Metal-Hydride (NiMH) battery pack, or a Lithium-Ion (Li-Ion) battery pack (models 2650CDT and 2655CDT only).
NOTE
Although the battery is fully charged at the factory, transit and shelf time may reduce the initial battery charge. We recommend that the first time you use your system, you connect it to AC power using the AC adapter. This will also recharge your battery. Your NEC Versa 2600 Series system provides two tools to help you keep track of the main battery's power level:
T Battery Gauge utility, which lets you quickly identify how much battery power
you have available
T Windows 95 Battery Gauge, which lets you quickly identify how much battery
power you have available. When remaining battery power falls to 10%, the system emits a single beep; when battery power falls to 5%, the system beeps once every 60 seconds.
Installing the Battery Pack
Install the battery pack in your system as follows. (For information about replacing a battery pack, see "Replacing the Battery Pack," later in this section.)
!
CAUTION
Be sure to save your data before replacing the battery pack or connecting the AC adapter. Failure to do so can result in data loss.
1. If your system is on, save your data, close any applications running, and power off
the system.
2. Align the battery pack with the Battery Pack bay. Make sure the battery contacts
are aligned properly with the connector inside the bay. Install the battery pack only in this bay.
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Setup and Operation
3. Push the battery pack into the bay until the locking latch on the bottom of the
system clicks into place.
How to Recharge the Battery Pack
When battery power gets low, connect your system to the AC adapter and AC power to recharge the battery pack. Your system is again ready for use and recharges during use. The recharge time is about the same, if powered on or powered off. (see "Using the AC Adapter.") If AC power is not available, you can replace the battery as follows:
1. Place your system in Suspend Mode. 2. Remove discharged battery pack and install a charged battery pack (see
"Replacing the Battery Pack" for removal instructions).
3. Press the Power switch to resume your system.
!
WARNING
To prevent accidental battery ignition or explosion, adhere to the following:
T Keep the battery away from extreme heat. T Keep metal objects away from the battery terminals to prevent a short
circuit.
T Make sure the battery is properly installed in the battery bay. T Read the precautions printed on the battery.
Battery Handling
Review the following before handling either an NiMH or an Li-Ion battery.
T Use batteries only in the computer for which they are designed. Mixing other
manufacturer's batteries can deteriorate battery and equipment performance.
T Turn off power to the system after use. Keeping system power on can degrade
battery performance and shorten battery life.
T Clean the battery terminals with a dry cloth if they get dirty. T When not in use, store the battery in a cool dry area.
Setup and Operation
2-7
The following symptoms indicate that battery life is nearing an end. Discard batteries that display these symptoms:
T T T T
shorter work times discoloration, warping hot to the touch strange odor.
Replacing the Battery Pack
Replace the battery pack installed in your NEC Versa 2600 system as follows.
1. Save your files, exit Windows, and turn off system power. 2. Close the LCD and turn the system over. 3. Press the battery release latch and slide the battery out of the system, as shown in
the following figure.
Battery Release Latch
Battery Pack
Figure 2-5
Battery Release Latch
4. Insert the new battery into the bay, pressing it firmly until the release latch clicks.
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Setup and Operation
Battery Pack
Figure 2-6
Inserting Battery Pack
Turn the system over, open the LCD panel, and power on the system.
Battery Life
The NEC Versa 2600 battery life, on a single charge, is as follows.
T For NiMH batteries
2 - 4 hours, with power management enabled 2 hours, without power management
T for Li-Ion batteries
2 - 3 hours, with power management enabled 1 hour and 40 minutes, without power management These estimates are made under the following conditions:
T When the battery is new and fully charged T When no external peripherals are connected to the NEC Versa.
Your actual operation time on a single battery charge may vary significantly, depending on the intensity of system usage.
Extending Battery Life
While on the road, it is important to be aware of the simple things you can do to extend the life of the system's main battery. Use the power management features enabled through Setup to extend battery life.
Setup and Operation
2-9
Battery Charging
The time to completely recharge your main battery is approximately 3 hours whether the system is powered on or powered off as follows: For maximum battery performance, fully discharge the battery before recharging it. To do so, unplug the AC adapter, turn off power management features (through Setup and Windows), and turn on the system. (Do not leave any applications running.) Once the battery is fully discharged, plug in the AC adapter and recharge the battery. The warning beep that sounds when battery power becomes critically low is always a true indicator that battery power is low. Be sure to save your data when you hear the beep and take proper steps to provide power to your system.
Battery Precautions
Always comply with the following battery precautions.
!
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 batteries according to the manufacturer's instructions.
T Keep the battery away from heat sources including direct sunlight, open
fires, microwave ovens, a