NEC POWERMATE PROFESSIONAL - SERVICE MANUAL 05-1997 Service Manual

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PROPRIETARY NOTICE AND LIABILITY DISCLAIMER
The information disclosed in this document, including all designs and related
materials, is the valuable property of NEC Computer Systems Division, Packard Bell NEC,
Inc. (hereinafter "NECCSD") and/or its licensors. NECCSD and/or its licensors, as appro-
priate, 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, and FastFacts, MagicEye, MultiSync, and PowerMate
are either trademarks or registered trademarks of NEC Technologies, Inc.; these trademarks are used
under license by Packard Bell, NEC.
All other
product, brand, or trade names used in this publication are the trademarks or registered
trademarks of their respective trademark owners.
Copyright 1997
NEC Computer Systems Division
Packard Bell NEC, Inc.
1414 Massachusetts Avenue
Boxborough, MA 01719-2298
All Rights Reserved
First Printing — May 1997
Copyright 1997
NEC Corporation
7-1 Shiba 5-Chome, Minato-Ku
Tokyo 108-01, Japan
All Rights Reserved

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Summary of Contents for NEC POWERMATE PROFESSIONAL - SERVICE MANUAL 05-1997

  • Page 1 Reproduction of this document or portions thereof without prior written approval of NECCSD is prohibited. NEC is a registered trademark of NEC Corporation, and FastFacts, MagicEye, MultiSync, and PowerMate are either trademarks or registered trademarks of NEC Technologies, Inc.; these trademarks are used under license by Packard Bell, NEC.
  • Page 2: Table Of Contents

    Contents Preface.........................xv Abbreviations.......................xvii Section 1 Technical Information System Chassis ......................1-3 System Board ......................1-4 Processor and Secondary Cache................1-7 System BIOS ......................1-7 I/O Addressing......................1-9 System Memory....................1-10 Interrupt Controller....................1-11 Plug and Play ......................1-12 ISA Bus........................1-12 PCI Local Bus ......................1-12 PCI/IDE Ports ......................1-13 Parallel Interface ....................1-13 Serial Interface......................1-14 Infrared Interface ....................1-15 Video Board ........................1-15...
  • Page 3 Contents Section 2 Setup and Operation Unpacking and Repacking....................2-1 System Setup .......................2-1 Keyboard, Mouse, and Power Cable Connection...........2-1 Monitor Connection....................2-3 Speaker and Microphone Connections..............2-3 Starting Up ........................2-7 The Setup Utility......................2-7 When to Use Setup ....................2-8 How to Start Setup ....................2-9 How to Use Setup....................2-10 Main Menu ......................2-10 System Date/Time..................2-11...
  • Page 4 Features ........................2-35 PC Health Indicator ....................2-35 Managing Workstations .................2-35 PC Health Meter ....................2-36 PC Health Description..................2-36 Inventory ......................2-37 Using DMI......................2-37 NEC MagicEye Technology..................2-38 Video Drivers ......................2-38 Changing Display Properties .................2-39 Windows 95....................2-39 Windows NT 4.0....................2-40 CD Restore........................2-41 Selecting CD Restore Options................2-41 Restore Individual Files..................2-41...
  • Page 5 Guidelines for Windows 95 Installations............2-48 Guidelines for Windows NT Installations............2-49 Driver Installation For the Windows 95 Operating System........2-49 Preparation ....................2-49 NEC 16X CD-ROM Drivers ................2-50 PIIX3 IDE Drivers..................2-50 Matrox Mystique Video Drivers..............2-51 Yamaha Audio Drivers...................2-52 Driver Installation for the Windows NT Operating System ........2-53 Preparation ....................2-53...
  • Page 6 Adding External Options....................3-31 Parallel Printer ......................3-32 Serial Devices .......................3-32 SCSI Devices......................3-33 Section 4 Maintenance and Troubleshooting Online Services ......................4-2 NEC’s FastFacts Service..................4-2 NECCSD Bulletin Board Service ................4-3 E-mail/Fax Technical Support Service..............4-5 Internet .........................4-5 NECCSD Technical Support Services ..............4-6 Maintenance ........................4-6 System Cleaning....................4-6...
  • Page 7 viii Contents Section 5 Repair Disassembly and Reassembly..................5-1 System Unit Cover Removal .................5-2 Side Panel Removal ....................5-4 Expansion Board Removal ..................5-4 SIMM Removal ....................5-5 Front Panel Assembly Removal ................5-7 Blank Panel and Metal Cover Plate Removal............5-7 3 1/2-Inch Diskette Drive Removal ...............5-8 3 1/2-Inch Hard Disk Drive Removal ..............5-10 5 1/4-Inch Device Removal...................5-11 Power Supply Removal..................5-13...
  • Page 8 Contents ISA Pin Assignments.....................A-13 PCI Pin Assignments.....................A-15 SIMM Sockets......................A-16 Appendix B System Board Settings Changing Jumper Settings....................B-2 System Board Jumper Locations ................B-3 Changing System Board Jumper Settings ..............B-4 Processor/Bus Speed Jumpers ................B-4 BIOS Recovery....................B-6 Clearing CMOS .....................B-7 Denying Access to CMOS Setup..............B-8 Clearing the Password..................B-10 Appendix C Hard Disk Drive Specifications Hard Disk Drive Specifications ..................C-1...
  • Page 9 Contents Power Button....................2-7 2-10 Main Menu ....................2-9 2-11 Display Properties Window – Windows 95.............2-39 2-12 Display Properties Window – Windows NT 4.0..........2-40 Cover Screws....................3-4 Releasing the System Unit Cover..............3-5 System Unit Cover Replacement ..............3-6 System Board Upgrade Sockets and Connectors ..........3-7 Expansion Slot Locations................3-8 Removing a Slot Cover ..................3-9 Inserting the Expansion Board................3-10...
  • Page 10 Contents Removing the Mouse Ball Cover..............4-8 Battery Socket Location.................4-18 Battery Removal ....................4-18 Cover Screws....................5-3 Releasing the System Unit Cover..............5-3 Removing Side Panel Screws .................5-4 Expansion Board Removal ................5-5 System Board SIMM Sockets ................5-6 Removing a SIMM..................5-6 Removing the Front Panel ................5-7 Removing the Slot Cover ................5-8 3 1/2-Inch Diskette Drive Cables..............5-8 5-10...
  • Page 11 Contents A-11 Sleep Connector.....................A-12 A-12 Power On Connector ..................A-13 A-13 PCI, ISA, and SIMM Connector Locations ............A-13 Locating System Configuration Jumpers............B-3 List of Tables PowerMate Professional Series System Configurations........1-1 System Board Feature Components..............1-6 System Memory Map ..................1-8 I/O Address Map ...................1-9 Interrupt Level Assignments................1-11 Parallel Port Addressing and Interrupts ............1-13 Serial Port Addressing and Interrupts .............1-14...
  • Page 12 A-21 PCI Connector Pin Assignments..............A-15 A-22 SIMM Socket Pin Assignments ..............A-16 System Board Jumper Settings ...............B-4 Quantum 3.2-GB Hard Disk Specifications ............C-1 4-GB Seagate Hard Disk Specifications............C-3 Specifications for Sixteen-Speed NEC CD-ROM Reader........D-1 Jumper A Settings..................D-3 Jumper B Settings ..................D-4...
  • Page 13 Contents...
  • Page 14: Preface

    The manual also includes system setup information, procedures for installing options, and illustrated parts lists. The manual is written for NEC-trained customer engineers, system analysts, service center personnel, and dealers.
  • Page 15: Abbreviations

    xvii Abbreviations ampere direct memory access alternating current DMAC DMA controller ASIC application-specific integrated disk operating system circuit DRAM dynamic RAM advanced technology (IBM PC) error checking and correction AT attachment enhanced capabilities port (ECP) ATAPI AT attachment packet interface Enhanced Graphics Adapter Bulletin Board System Enhanced Parallel Port...
  • Page 16 xviii Abbreviations kilobyte read/write kilogram slave kilohertz SCSI Small Computer System Interface pound signal ground light-emitting diode SIMM single inline memory module mega SVGA Super Video Graphics Array milliamps switch maximum Technical Support Center megabyte transistor/transistor logic Monochrome Display Adapter tracks per inch modified frequency modulation volt...
  • Page 17: Section 1 Technical Information

    Section 1 Technical Information ® This section provides technical information about PowerMate Professional Series ® ® computers. PowerMate Professional Series computers are Intel Pentium II processor- based systems with MMX™ and cache memory enhancements. Depending on the model, the PowerMate Professional Series computer comes with a ®...
  • Page 18 1-2 Technical Information Table 1-1 PowerMate Professional Series System Configurations Operating System Model Number Processor System Memory Video Memory Hard Disk MT-2560-2785S 266-MHz Windows NT 64 MB 4 MB VRAM on 4.35-GB IDE Pentium II Number Nine Imagine 128 Series 2 video board All PowerMate Professional Series configurations come with the following common hardware:...
  • Page 19: System Chassis

    Technical Information 1-3 SYSTEM CHASSIS The chassis provides an enclosure for the system board, power supply, six PCI/ISA expansion slots, and six storage device slots. The expansion slots include two 8-/16-bit ISA slots, one shared PCI/ISA slot, and three 32-bit PCI slots. One PCI slot contains either a Matrox Mystique or a Number Nine Imagine 128 Series 2 video board, depending on the model.
  • Page 20: System Board

    1-4 Technical Information Figure 1-2 Rear Panel Features SYSTEM BOARD The system board includes the following features: Intel Pentium II microprocessor running at 233- or 266-MHz (model dependent) Intel 82440FX PCI chipset used for PCI/ISA, memory, and peripheral control PC87308 Super I/O controller (integrates standard PC I/O functions: two serial ports, one EPP/ECP-capable parallel port, floppy disk interface, real time clock, CMOS RAM, keyboard controller, and support for an IrDA-compatible infrared interface)
  • Page 21 Speaker mounted on the system board Password protection and padlock slot for system security Hardware management ASIC (NEC MagicEye™) chip mounted on the system board (see Section 2). Table 1-2 lists the major chips on the system board. See Appendix A, “Connector Pin Assignments,”...
  • Page 22: System Board Feature Components

    1-6 Technical Information Table 1-2 System Board Feature Components Chip Function Pentium II Chip 233/66-MHz or 266/66-MHz Intel Pentium II processor 82440FX Chipset: 82371SB PCI/ISA IDE Provides interface between PCI and ISA bus; Xccelerator (PIIX3) supports up to four PCI/IDE devices; mode 3 and mode 4 support;...
  • Page 23: Processor And Secondary Cache

    The system BIOS is always shadowed. Shadowing allows any BIOS routine to be executed from fast 32-bit onboard DRAM instead of from the slower 8-bit flash device. NEC’s Flash ROM allows fast, economical BIOS upgrades. NEC Flash ROMs are reprogrammable system and video EPROMs. With NEC’s Flash ROM, a ROM BIOS...
  • Page 24: System Memory Map

    1-8 Technical Information reduces inadvertent system board damage that can take place when replacing ROMs facilitates adopting new technology while maintaining corporate standards gives network administrators company-wide control of BIOS revisions. The BIOS programs execute the Power-On Self-Test, initialize processor controllers, and interact with the display, diskette drives, hard disks, communication devices, and peripherals.
  • Page 25: I/O Addressing

    Technical Information 1-9 I/O Addressing The processor communicates with I/O devices by I/O mapping. The hexadecimal (hex) addresses of I/O devices are listed in Table 1-4. Table 1-4 I/O Address Map Address (Hex) I/O Device Name 0000-000F PIIX3 - DMA controller 1 (channel 0-3) 0020-0021 PIIX3 - Interrupt controller 1 002E-002F...
  • Page 26: System Memory

    1-10 Technical Information Table 1-4 I/O Address Map Address (Hex) I/O Device Name 03E8-03EF Serial port 3 03F0-03F5 Floppy channel 1 03F6 Primary IDE channel command port 03F7 (write) Floppy channel 1 command 03F7, bit 7 Floppy disk change channel 1 03F7, bit 6 through 0 Primary IDE channel status port 03F8-03FF...
  • Page 27: Interrupt Controller

    Technical Information 1-11 SIMMs install directly in the four sockets on the system board. The four sockets are assigned as Bank 0 (2 sockets) and Bank 1 (2 sockets). All configurations have two SIMMs installed in Bank 1. SIMMs must be installed in pairs of the same memory type and size. Both sockets must be populated within a bank for the system to work.
  • Page 28: Plug And Play

    1-12 Technical Information Table 1-5 Interrupt Level Assignments Interrupt Priority Interrupt Device IRQ10* USB (SCSI board for SCSI configurations) IRQ11* Video Board IRQ12 Onboard mouse port (available if no PS/2 mouse) IRQ13 Reserved, Math Coprocessor IRQ14 Primary IDE IRQ15 Secondary IDE if present, or else user-available *These interrupts are selected and used by the installed expansion boards.
  • Page 29: Pci/Ide Ports

    Technical Information 1-13 PCI/IDE Ports The system board provides two high-performance PCI/IDE ports: a primary channel and a secondary channel. Each port supports up to two devices for a total of four IDE devices. The primary PCI/IDE port has an enhanced IDE interface that supports PIO Mode 4 devices with 16 MB per second 32-bit wide data transfers on the high-performance PCI local bus.
  • Page 30: Serial Interface

    1-14 Technical Information Serial Interface The system has two 16C550 UART-compatible serial ports (COM1 and COM2) integrated on the I/O controller. The serial ports support the standard RS-232C interface and the IR interface (see Table 1-7). The buffered high-speed serial ports support transfer rates up to 19.2 KB.
  • Page 31: Infrared Interface

    Technical Information 1-15 Infrared Interface The I/O controller incorporates an infrared interface that provides two-way wireless communication through the IR window (port) on the front of the system. The interface uses infrared as the transmission medium instead of a traditional serial cable. The IR port permits transfer of files to or from portable devices such as laptops and personal digital assistant (PDA) products using Puma TranXit applications software (Windows 95 only) or other software supporting IrDA data transfer.
  • Page 32: Video Support

    1-16 Technical Information Video Support Matrox Mystique configurations come with 2 MB of video memory on the video board, upgradeable to 4 MB of video memory using a video upgrade module. Number Nine Imagine 128 Series 2 configurations come with 4 MB of video memory (not upgradable). The default video mode is 800 by 600 pixels with 256 colors.
  • Page 33: Video Playback

    Technical Information 1-17 Video Playback The video board’s advanced video playback acceleration provides full-screen playback of MPEG and AVI video clips. The graphics engine delivers a full-screen, smooth display of motion video data up to 30 frames per second (fps). Support includes: MPEG-1 or MPEG-2 Active Movie Video for Windows.
  • Page 34: Scsi Board

    1-18 Technical Information The following table shows the IRQ, DMA channel, and base I/O address options for the audio subsystem. These options are automatically chosen by the plug and play interface. Table 1-10 Audio Subsystem Resources DMA Channel I/O Address Resource (Options) (Options)
  • Page 35: Diskette Drive

    Technical Information 1-19 SCSI-1, SCSI-2, SCSI-3, and Wide UltraSCSI device protocol Advanced SCSI features including multi-threaded I/O (up to 255 tasks simultaneously), scatter/gather, tagged command queuing, disconnect/reconnect, and synchronous and asynchronous data transfer Extended translation scheme supports up to eight GB per disk Drivers may be single-ended, active, or programmable via the SCSISelect configuration utility.
  • Page 36: Scsi Hard Disk

    1-20 Technical Information One drive only DS (Drive Select) Master (default) SP (Slave Present) Two drives installed Slave CS (Cable Select) - uses pin 28 of cable (not used) PK - jumper parking position to store an unused jumper Figure not to scale DS CS PK SP Figure 1-3 IDE Hard Disk Drive Jumper Settings NOTE: When ATA and ATAPI devices are...
  • Page 37: Cd-Rom Reader Settings

    Technical Information 1-21 busy lamp that lights during read operations CD tray that opens and closes when the open/close button is pressed open/close button for opening or closing the CD tray when the power is on emergency eject hole in the front panel for manually opening the CD tray if power is lost.
  • Page 38: Power Supply

    1-22 Technical Information Master (default) Audio Connector IDE Connector Power Connector Figure 1-5 CD-ROM Jumper Settings POWER SUPPLY The power supply is mounted inside the system unit. It supplies power to the system board, option boards, diskette drives, hard disks, keyboard, and mouse. A fan inside the power supply provides system ventilation.
  • Page 39: Specifications

    Technical Information 1-23 SPECIFICATIONS System specifications are included in Table 1-11. Table 1-11 Specifications Item Specification Dimensions and Width: 8.5 inches (215 mm) Weight Depth: 18.3 inches (465 mm) Height: 14.6 inches (371 mm) Weight: 20.5 lb. (9.32 kg) (dependent upon options) Keyboard Dimensions and Width: 19.0 inches (48.3 cm) Weight:...
  • Page 40: Power Button

    1-24 Technical Information Table 1-11 Specifications Item Specification Front Panel Power button Power indicator lamp Hard disk drive busy indicator lamp Reset button Infrared IrDA transceiver Processor Intel Pentium II 233-MHz or 266-MHz, depending on the model Cache Memory 32 KB of primary cache (16 KB data, 16 KB instruction) and 512 KB of secondary cache integrated in the processor Flash ROM 2-MB Flash ROM...
  • Page 41 Technical Information 1-25 Table 1-11 Specifications Item Specification Video Board Matrox Mystique Graphics Controller MGA-1064SG 64-bit graphics accelerator 3.3V for core, 5.0V for PCI bus interface 0.5u technology (VX) Package: 225 BGA Estimated power consumption: 2.6W Integrated lookup tables, hardware cursor, and 170 MHz DAC Integrated PLLs for system and pixel clocks 83 MHz synchronous memory interface Memory Interface...
  • Page 42 1-26 Technical Information Table 1-11 Specifications Item Specification Sound System Yamaha audio CODEC chip integrated on system board: Compatible with Sound Blaster Pro™, Sound Blaster™ 2.0, ® Adlib™, MPU-401 and Microsoft Windows Sound System for PC sound applications Stereo jacks for microphone, line in, and line out Software address mapping and DMA and IRQ selections for Plug and Play Provides all digital audio and analog mixing functions required...
  • Page 43: Section 2 Setup And Operation

    Section 2 Setup and Operation This section provides information on hardware setup and operation for the PowerMate Professional Series systems. Setup includes unpacking, setting up, and powering on the system. Operation includes information on loading the Setup utility program for configuring system parameters.
  • Page 44: Voltage Selector Switch

    Setup and Operation Figure 2-1 Voltage Selector Switch NOTE: The correct AC input voltage must be properly set . Select the appropriate voltage with the voltage selector switch located at the rear of the system (set the switch down for 115V, up for 230V).
  • Page 45: Monitor Connection

    Setup and Operation Monitor Connection NOTE: Use the documentation that comes with the monitor along with the instructions in this subsection to set up the monitor. Locate the monitor signal cable. Connect the monitor signal cable to the VGA connector on the rear of the system unit.
  • Page 46: Right Speaker

    Setup and Operation Figure 2-4 Right Speaker Identify the cables that come with the speakers. The left speaker cable has a black connector on each end. The other cable (for the right speaker) is a Y-cable. The Y-cable has a red and white connector at one end and a black connector with two rings at the other end.
  • Page 47: Connecting The Two Speakers

    Setup and Operation Figure 2-6 Connecting the Two Speakers Attach the Y-cable as follows. Insert the red connector into the red jack marked “RIGHT LINE IN” on the back of the right speaker. Insert the white connector into the white jack marked “LEFT LINE IN” on the back of the right speaker.
  • Page 48: Attaching The Microphone And Y-Cable

    Setup and Operation Mic In Line Out Figure 2-7 Attaching the Microphone and Y-Cable Locate the AC adapter (see Figure 2-8). Plug the AC adapter into the jack marked “+15 DC” on the back of the right speaker. Plug the other end of the cable into a properly grounded wall outlet. Figure 2-8 Connecting the AC Adapter Power on the speakers after the operating system has been loaded.
  • Page 49: Starting Up

    Setup and Operation STARTING UP Press the power button (see Figure 2-9) to power on the system. The power lamp lights green, indicating that the system is on. The system automatically goes into its Power-On Self-Test (POST), and checks system components.
  • Page 50: When To Use Setup

    The battery supplies continuous power to CMOS memory and maintains configuration information when system power is off (see “Battery Replacement” in Chapter 4). NOTE: NEC recommends that you print out or write down the current Setup parameters and store the information in a safe place. This lets you restore the system to the current parameters if you ever need to replace the battery.
  • Page 51: How To Start Setup

    Setup and Operation to check the installation of optional memory by comparing the amount of memory installed with the amount of memory displayed by Setup to change certain system operating parameters, such as boot device sequence and keyboard parameters to configure system connections for peripherals such as the diskette drive, hard disks, and devices connected to the printer port and serial ports to customize the system with security features such as passwords, diskette drive restriction, virus check reminder and system backup reminder...
  • Page 52: How To Use Setup

    2-10 Setup and Operation How to Use Setup Use the keys shown on the right of the Setup menu to make your selections or exit the current menu. The following table describes the navigation keys and their alternates. Table 2-1 Navigation Keys Function Provides help for the parameter field being displayed.
  • Page 53: System Date/Time

    Setup and Operation 2-11 Boot Options Video Mode Mouse Base Memory Extended Memory BIOS Version System Date/Time Use this menu to set the current time and date. The settings remain in memory even after you turn off the system power. To set the date, highlight “date”...
  • Page 54 2-12 Setup and Operation IDE Device Configuration Submenu The Hard Disk Submenu lets you check or change the following hard disk drive parameters: IDE Device Configuration Number of Cylinders Number of Heads Number of Sectors Maximum Capacity IDE Translation Mode Multiple Sector Setting Fast Programmed I/O Modes.
  • Page 55: Language

    Setup and Operation 2-13 Auto Detected (default) allows the BIOS to examine the drive and determine the optimal mode. The first choice is to utilize Logical Block mode if it is supported by the drive. The second choice is to utilize Extended CHS mode if the drive topology allows its use.
  • Page 56: Boot Options

    2-14 Setup and Operation Boot Options When the cursor is placed in the Boot Option field, you can select it by pressing . The Enter Boot Options Submenu appears allowing parameters that affect the boot process to be set. Boot Options Submenu The Boot Options Submenu lets you check or change the following bootup parameters: Boot Sequence System Cache...
  • Page 57 Setup and Operation 2-15 NOTE: “De-turbo” does not reduce the CPU speed to 8 MHz. If “De-turbo” is selected, it will automatically “Disable” the System Cache. NumLock The NumLock field controls whether the NumLock key on the keyboard will be “On” or “Off”...
  • Page 58: Power-On Com1 Ring

    2-16 Setup and Operation Typematic Rate Programming The parameter controls whether the default user configuration values are used for Typematic Rate Delay and Typematic Rate. Default sets the Typematic Delay to 500 msec and Typematic Rate to 15. Override provides the following two options. These options allow you to customize the values.
  • Page 59: Video Mode

    Setup and Operation 2-17 Video Mode This field cannot be entered; it is an information field only. The system has a video controller. The default is “EGA/VGA.” Mouse This field cannot be entered; it is an information field only. The system supports a PS/2 mouse.
  • Page 60 2-18 Setup and Operation CAUTION: Setting items in this menu to incorrect values can cause the system to malfunction. Processor Type This field cannot be entered; it is an information field only. The processor is Intel Pentium II microprocessor that is backward compatible with 8086, 80286, I386, I486, Pentium, and Pentium Pro processors.
  • Page 61 Setup and Operation 2-19 Floppy Interface The Floppy Interface field enables the diskette drive interface connector on the system board. This field can be either “Auto” detected or “Disabled.” The default is “Auto.” USB Interface The Universal Serial Bus (USB) Interface field configures the USB interface ports on the system board.
  • Page 62 2-20 Setup and Operation Parallel Port Type The Parallel Port Mode field options are as follows. Compatible (default) sets the parallel port to the standard AT compatibility. Bi-directional sets the parallel port to input/output mode only. sets the parallel port to the Enhanced Capabilities Port (ECP) mode. sets the parallel port to the Enhanced Parallel Port (EPP) mode.
  • Page 63 Setup and Operation 2-21 ISA LFB Size The ISA Video Linear Frame Buffer (LFB) Size provides a mechanism for creating a hole in the system memory map. Address accesses made to this hole will be directed to the ISA bus instead of main memory.
  • Page 64 2-22 Setup and Operation If there are no latency-sensitive cards in the system, but I/O intensive applications are being run, the value can be increased to slightly improve performance. Memory Error Detection Memory Error Detection sets the type of error detection or correction. This field appears when either ECC or Parity SIMMs are detected.
  • Page 65 Setup and Operation 2-23 Enabled (default) allows the BIOS to work with the OS and reduce power consumption when idle. This selection allows you to customize the following power management fields. Disabled keeps the computer in a full-on state and eliminates the following power management options.
  • Page 66: Hot Key Parameters

    2-24 Setup and Operation In this case, the password has to be entered before you regain control of the system. This password is not echoed to the screen. The following table describes how the Powerdown Hot Key interacts with the Security Hot Key. Table 2-2 Hot Key Parameters Hot Key Function...
  • Page 67 Setup and Operation 2-25 Use BIOS Setup The BIOS depends upon the information provided by you in the following fields to prevent conflicts between the Plug and Play and ISA legacy boards. You should not install and use run-time Plug and Play software such as Configuration Managers and the ISA Configuration Utility (ICU).
  • Page 68 2-26 Setup and Operation NOTE: If a value of “96 KB” is selected, then the ISA Shared Memory Base Address field can only be set to C8000h; if “80 KB,” then a value of C8000 or CC000h, etc. can be set. ISA Shared Memory Address The ISA Shared Memory Address field is only displayed when an ISA Shared Memory Size has been selected.
  • Page 69: Security Menu

    Setup and Operation 2-27 Clear Event Log Keep On Next Boot Mark Existing Events as Read Do Not Mark Mark Critical Events in Log: Single Bit ECC Events Multiple Bit ECC Events Parity Error Events PreBoot Events If Critical Events in Log items are entered, the following is displayed: Parity Error Events [count] is pressed, the following appear: Enter...
  • Page 70: Security Passwords

    2-28 Setup and Operation Table 2-3 Security Passwords Password Password at Access Access All Enabled Boot Setup Setup Fields Unattended Security Start Hot Key User Password Only Administrative Password Only Both User and No (User) Administrative Passwords Yes (Admin) No Passwords Enabled If the Administrative Password is in effect and Setup is entered with the User Password, only the following fields may be changed.
  • Page 71: Enter Password And Set Administrative Password

    Setup and Operation 2-29 Enter Password This field allows you to enable a user level password during POST and to enter Setup. When both the “User Password is” and “Administrative Password is” are “Enabled,” only the Administrative Password gives you full access to all Setup fields.
  • Page 72: Security Hot Key (Ctrl-Alt-)

    2-30 Setup and Operation Enabled completely boots the system (including running CONFIG.SYS and AUTOEXEC.BAT), then locks the keyboard. The User Password must be entered to unlock it. The BIOS does not provide any prompt string. Security Hot Key (CTRL-ALT-) The Security Hot Key field is used to lock the keyboard when you step away from the system.
  • Page 73: Exit Discarding Changes

    Setup and Operation 2-31 To save the changes and exit Setup, press . Press to return to the Exit submenu Enter without saving your changes. Exit Discarding Changes Use this option to exit Setup without recording any changes you may have made. After you select “Exit Discarding Changes, the program displays this message: Exit Discarding Changes? Press Enter to Continue...
  • Page 74: Neccsd Bulletin Board Service

    BIOS Update utility. How to flash the BIOS with a flash diskette is described following the BBS access procedure. See the following subsection, “NEC Bulletin Board Service,” for information about using the bulletin board (available in the U.S. and Canada).
  • Page 75: Flash Utility

    Setup and Operation 2-33 Following the HyperTerminal instructions, enter the BBS phone number (508-635-4706). Your business phone system and/or location might require a 9 1 or 1 prefix. NOTE: The first time that you use the BBS, you will be requested to provide information for a new user questionnaire.
  • Page 76: Scsiselect Utility

    2-34 Setup and Operation Update the BIOS from the BIOS flash diskette as follows. Write down the Setup parameters currently set on the system. Turn off the system. Insert the flash diskette in drive A, and turn on the system. When the flash upgrade menu appears, choose “Update Flash Memory Area from a file.”...
  • Page 77: Landesk Client Manager Setup

    Setup and Operation 2-35 LANDesk Client Manager Setup Use the following procedure to setup the LANDesk Client Manager software: Click the Start button on the taskbar. Point to “Programs” to open the Programs menu. Point to “LanDesk Client Manager.” In the submenu, point and click on “LanDesk 3.0 Setup.” Follow the instructions in the Setup program.
  • Page 78: Pc Health Meter

    2-36 Setup and Operation PC Health Meter The PC Health meter is a traffic signal that provides the following visual indicators of workstation health: A red light means that a critical system event has occurred. You are required to fix the problem immediately. A yellow light or noncritical system event requires that you monitor the situation.
  • Page 79: Inventory

    Setup and Operation 2-37 Inventory Client Manager Inventory views the hardware and software components of the workstation. The inventory consists of the following categories: workstation summary basic hardware drives memory audio keyboard/mouse video system resources I/O ports operating system network applications system files user information.
  • Page 80: Nec Magiceye Technology

    NEC MagicEye Technology The PowerMate Professional Series computer has a chip mounted on the system board that supports the NEC MagicEye™ Technology. The purpose of this technology is to provide many new and advanced real-time monitoring capabilities used by DMI. The NEC...
  • Page 81: Changing Display Properties

    Setup and Operation 2-39 NOTE: A multifrequency monitor, such as an ® NEC MultiSync monitor, is required to access the extended graphics mode. Changing Display Properties The following procedure provides instructions on how to load new video drivers to change the properties of the display.
  • Page 82: Windows Nt 4.0

    2-40 Setup and Operation Use the slide bar in the Display area section of the screen to select the screen resolution. The default value is 800 x 600 pixels. Select the number of colors you want to display from the Color palette section of the screen.
  • Page 83: Cd Restore

    Setup and Operation 2-41 Use the slide bar in the Display Area section of the screen to select the screen resolution. The default value is 800 x 600 pixels. Select the number of colors you want to display from the Color Palette section of the screen.
  • Page 84: Restoring Individual Files

    With system power on, insert the CD Restore disc into the CD-ROM reader. On the Windows 95 desktop, double click My Computer Double click the CD-ROM reader (F:) icon. The NEC System Restore screen appears. At the System Restore screen, click to restore individual files. A license agreement appears.
  • Page 85: Selecting Files

    Setup and Operation 2-43 The following sections explain how to use the Restore Individual Files screen. Complete all sections to restore the files. Selecting Files Under “Select files to restore,” select the files as follows: From the left dialog box, highlight the directory that contains the files you want to restore.
  • Page 86: Restoring The Files

    Go to the next step to complete the restoration. Cancel — click this option to cancel the restoration. This returns you to the NEC System Restore menu. To proceed with the restoration, click “Restore the files listed.” When the restoration is completed, a file restore message appears.
  • Page 87: Windows Nt 4.0 Application Cd Installation Instructions

    Setup and Operation 2-45 With system power on, insert the CD Restore disc into the CD-ROM reader. Turn system power off. Turn on system power. The System Recovery screen provides information about the restore process. Read this information. You can choose one of the following two options: Continue —...
  • Page 88: Landesk Client Manager Installation

    2-46 Setup and Operation From the Windows NT desktop, double click the following icons in succession: My Computer , the CD-ROM reader icon, Mcafee , and Disk1 Double click the Setup icon. The McAfee VirusScan NT v2.5.3 (Licensed) - Setup screen appears. The Welcome to Setup window appears on the screen. Click .
  • Page 89: Administrator Mode

    Setup and Operation 2-47 From the Windows NT desktop, double click the following icons in succession: My Computer , the icon for the CD-ROM reader, Landesk , and Local Double click the Setup icon. The LANDesk Client Manager Setup for Windows NT screen appears.
  • Page 90: Driver Cd Installation Instructions

    PowerMate Professional Series computers. The following drivers must be installed if the operating system is upgraded: NEC 16X CD-ROM Drivers dated 5/8/96 for the Windows 95 operating system PIIX3 IDE Drivers for Windows 95 PIIX3 IDE Drivers for the Windows NT 4.0 operating system.
  • Page 91: Guidelines For Windows Nt Installations

    Perform the steps in the “Preparation” section before upgrading to the Windows 95 operating system. Install the NEC 16X CD-ROM drivers before installing the IDE, video, or audio drivers. Install the PIIX3 IDE Drivers before installing the video or audio drivers.
  • Page 92: Nec 16X Cd-Rom Drivers

    Win95 piix3ide diskette. NEC 16X CD-ROM Drivers Load the NEC 16X CD-ROM Drivers into a system equipped with Windows 95 as follows. NOTE: Do not proceed until you have followed the procedure in “Preparation” above. Modify the system’s files to add CD-ROM drivers.
  • Page 93: Matrox Mystique Video Drivers

    Matrox Mystique Video Drivers Load the Matrox Mystique Video Drivers into a system with Windows 95 as follows. NOTE: Perform the procedures in “Preparation,” “NEC 16X CD-ROM Drivers,” and “PIIX3 IDE Drivers” before installing video drivers. Do not install video drivers from Windows 95 while in Safe Mode.
  • Page 94: Yamaha Audio Drivers

    Load the Yamaha Audio Drivers into a system with the Windows 95 operating system as follows. NOTE: Perform the procedures in “Preparation,” “NEC 16X CD-ROM Drivers,” and “PIIX3 IDE Drivers” before installing audio drivers. Insert the PowerMate Professional Series Driver CD into the CD-ROM reader.
  • Page 95: Driver Installation For The Windows Nt Operating System

    Setup and Operation 2-53 Click . The Copying Files... window appears. Change the path in the window where E:\ represents the CD-ROM reader. Use the letter actually E:\win95 assigned to the CD-ROM reader — it may or may not be Click .
  • Page 96: Matrox Mystique Video Drivers

    2-54 Setup and Operation Select IDE-CD-ROM (Atapi 1.2) / Dual-Channel PCI IDE Controller and click Remove . Click in the Remove Drivers window to confirm the driver deletion. Click to add the new driver. The Install Driver window appears. Click .
  • Page 97: Yamaha Audio Drivers

    Setup and Operation 2-55 YAMAHA Audio Drivers Load the Yamaha Audio Drivers into a system with Windows NT as follows. Insert the PowerMate Professional Series Driver CD into the CD-ROM reader. From the Windows NT desktop, double click the My Computer icon, double click the Control Panel...
  • Page 98: Number Nine Imagine 128 Series 2 Video Drivers

    2-56 Setup and Operation Number Nine Imagine 128 Series 2 Video Drivers Load the Imagine card drivers into a system with Windows NT as follows. Insert the PowerMate Office Series Driver CD into the CD-ROM reader. From the Windows NT desktop, click Start , point to Settings...
  • Page 99: Section 3 Option Installation

    Section 3 Option Installation This section provides instructions for installing the following options: expansion boards SIMM upgrade processor upgrade video upgrade data storage devices. These options require that the system unit cover be removed. Procedures for removing the cover are included in this section. In addition, this section provides procedures for installing external options to the connector ports on the rear of the system unit.
  • Page 100: Optional Hardware

    Option Installation Static electricity and improper installation procedures can damage computer components. Protect the computer components by following these safety instructions. CAUTION: Electrostatic discharge can damage computer components. Discharge static electricity by touching a grounded metal object before you remove the system unit cover. Avoid carpets in cool, dry areas.
  • Page 101: Removing The System Unit Cover

    Option Installation 3-3 Video RAM Depending on the model, the system features a Matrox Mystique or Number Nine Imagine 128 Series 2 video board. Matrox Mystique configurations come with 2 MB of video memory on the video board, upgradeable to 4 MB of video memory using a video upgrade module.
  • Page 102 Option Installation Disconnect the keyboard, mouse, monitor, and any other device (such as a printer) connected to the rear of the system. Label all cables to make reinstallation easier. CAUTION: Electrostatic discharge can damage computer components. Discharge static electricity by touching a grounded metal object before you remove the system unit cover.
  • Page 103: Replacing The System Unit Cover

    Option Installation 3-5 Figure 3-2 Releasing the System Unit Cover Pull the cover up and free it from the chassis. To replace the system unit cover, see “Replacing the System Unit Cover.” Replacing the System Unit Cover CAUTION: To prevent damage to system cables, carefully tuck the cables out of the path of the cover.
  • Page 104: Adding Internal Options

    Option Installation Figure 3-3 System Unit Cover Replacement Slide the cover forward to meet the front panel. NOTE: The cover fits tightly. If the cover does not slide all the way to the front panel, place one hand on the front of the unit while you slide the cover forward from the rear.
  • Page 105: Expansion Boards

    Option Installation 3-7 These options require that the system unit cover be removed. Procedures for removing the cover are provided in “Removing the System Unit Cover” earlier in this section. Use Figure 3-4 to locate the sockets and connectors for system board upgrades. Figure 3-4 System Board Upgrade Sockets and Connectors Expansion Boards The computer supports Plug and Play expansion boards (see “Plug and Play Support”...
  • Page 106: Slot Locations

    Option Installation Slot Locations As shown in Figure 3-5, the system has six expansion board slots: three PCI slots two ISA slots one shared PCI/ISA slot. PCI expansion boards run at the system's processor speed. The PCI bus handles 32 bits of data at a time, being wider as well as faster than the standard ISA bus.
  • Page 107 Option Installation 3-9 Figure 3-6 Removing a Slot Cover CAUTION: A slot cover can damage the system board or any option board if it drops into the system. Take care not to drop the slot cover when removing the screw. If the slot cover does fall into the unit, remove it before replacing the cover.
  • Page 108: Expansion Board Removal

    3-10 Option Installation Insert the screw removed earlier to secure the expansion board to the support bracket. Figure 3-7 Inserting the Expansion Board Attach any signal cables required by the expansion board. Replace the system unit cover (see “Replacing the System Unit Cover” in this section).
  • Page 109: Simm Upgrade

    Option Installation 3-11 SIMM Upgrade SIMM sticks are installed into SIMM sockets on the system board. The system board provides four SIMM sockets and supports up to 256 MB of high-speed memory using industry-standard, tin-plated, single in-line memory modules (SIMMs). The system supports the following SIMMs: 1-MB by 32- or 36-bit (4-MB stick) 2-MB by 32-or 36-bit (8-MB stick)
  • Page 110: Recommended Memory Upgrade Path

    3-12 Option Installation Locate the four SIMM sockets on the system board (see Figure 3-4). If any cables block access to the SIMM sockets, label and disconnect them. Use Table 3-1 to determine the SIMM configuration you need to upgrade memory and to identify the sockets for SIMM installation.
  • Page 111: Simm Removal

    Option Installation 3-13 SIMM Removal If the SIMM configuration requires the removal of a SIMM, remove the SIMM as follows. CAUTION: Reduce static discharge by touching the system's metal chassis. Remove the system unit cover. Locate the SIMMs sockets on the system board (see Figure 3-8). Press the metal clips at the outer edges of the socket away from the SIMM (see Figure 3-8).
  • Page 112: Video Upgrade

    3-14 Option Installation Align the notched end of the SIMM with the socket end closest to the bottom of the system. Insert the SIMM at an angle into the socket. Tilt the SIMM toward the locking tabs using equal pressure at the ends of the SIMM until it locks into the socket.
  • Page 113 Option Installation 3-15 Remove the video board installed in the PCI expansion board slot labeled PCI 3 (see Expansion Board Removal). Locate the upgrade module connectors on the video board. CAUTION: Before installing the video module, reduce static discharge by touching the system’s metal chassis.
  • Page 114: Data Storage Devices

    3-16 Option Installation Data Storage Devices The following sections provides information about installing storage devices in the system. Device Support Device Slots Device Preparation Device Cables Storage Device Installation Device Support The system board in the computer supports the following peripheral storage devices: up to two diskette drives, including the standard 1.44-MB diskette drive a 16-speed IDE CD-ROM reader one or two internal IDE drives (two SCSI drives in SCSI configurations)
  • Page 115: Storage Device Slots

    Option Installation 3-17 Figure 3-11 Storage Device Slots You can install accessible devices such as a diskette drive, tape drive, or hard disk with a 5 1/4-inch form factor (frame) in the 5 1/4-inch slots.
  • Page 116: Diskette Drive Signal Cable

    3-18 Option Installation Device Preparation Before you install a storage device in the system, follow any preinstallation instructions that come with the device. For example, check the following items for these devices: Diskette drive remove any termination on the optional diskette drive. See the documentation that comes with the drive.
  • Page 117: System Board Cable Connectors

    Option Installation 3-19 Figure 3-12 System Board Cable Connectors Diskette Drive Signal Cable A three-connector diskette drive signal cable comes attached to the system board and to the standard 1.44-MB diskette drive. The installation of a second diskette drive in the system does not require the replacement of the existing diskette drive signal cable.
  • Page 118: Ide Signal Cables

    3-20 Option Installation IDE Signal Cables Hard disk systems come with a three-connector IDE interface cable attached to the primary IDE connector. Multimedia systems come with a second IDE cable connected to the CD-ROM reader and to the secondary IDE connector. Each IDE connector on the system board supports two IDE devices.
  • Page 119: System Power Cables

    Option Installation 3-21 System Power Cables Power cables come from the power supply and are attached to the standard storage devices. System power cables vary in length and provide connector sizes to accommodate a variety of supported storage configurations. Power cable connectors are keyed to fit only in the correct position. The following figure shows the power cable connectors.
  • Page 120: Cabling A Diskette Drive

    3-22 Option Installation Connect the appropriate power cable to the power connector on the IDE device. Figure 3-17 Connecting IDE Device Cables If you are installing an IDE CD-ROM reader, also connect the audio cable (see the instructions that come with the reader). Cabling a Diskette Drive Connect the appropriate connector on the diskette drive signal cable to the signal connector on the diskette drive (see Figure 3-18).
  • Page 121: Storage Device Installation

    Option Installation 3-23 Storage Device Installation Click on an appropriate procedure for installing a storage device in the system. Installing the 3 1/2-Inch Drive Removing the Side and Front Panels Installing the 5 1/4-Inch Replacing the Front Panel and Side Panel 3 1/2-Inch Drive Installation Use the following procedure to install a hard disk drive.
  • Page 122 3-24 Option Installation Remove the power supply as follows. Locate the power supply as shown. Figure 3-19 Locating the Power Supply Disconnect the power supply cables from the system board.
  • Page 123 Option Installation 3-25 Remove the screws attaching the power supply from the rear of the system. Figure 3-20 Removing the Power Supply Screws Remove the power supply from the system. Align the holes in the hard disk drive with the holes at the bottom of the system.
  • Page 124: Removing The Side Panel

    3-26 Option Installation Secure the device to the bottom of the system. Figure 3-21 Securing a 3 1/2-inch Drive Connect the drive cables. Replace the power supply and reattach the power supply cables to the system board. Replace the four screws. Removing the Side Panel Remove the side panel only if you are installing a 5 1/4-inch device.
  • Page 125: Removing The Front Panel

    Option Installation 3-27 If you are installing a 3 1/2-inch hard disk drive, see “Installing the 3 1/2-Inch Drive.” Remove the system unit cover as previously described (see “System Unit Cover Removal”). Remove the side panel by removing the two screws from the top of the panel. Figure 3-22 Removing Side Panel Screws Removing the Front Panel Remove the front panel only if you are installing a 5 1/4-inch device.
  • Page 126 3-28 Option Installation Figure 3-23 Removing the Front Panel Identify the slot on the front panel for the device being installed. Remove the blank panel from the selected slot in the front panel by pressing the tabs inside the front panel and pushing the blank panel out. Remove the slot cover from the selected slot on the chassis by unscrewing the screws on each side of the cover.
  • Page 127: Installing The 5 1/4-Inch Device

    Option Installation 3-29 Installing the 5 1/4-Inch Device Use the following procedure to install an accessible device into the 5 1/4-inch device cage. Remove the side panel (see “Removing the Side Panel”). Remove the front panel (see “Removing the Front Panel”). Follow the preinstallation instructions that come with the device, such as setting jumpers and switches.
  • Page 128 3-30 Option Installation From the front of the system unit, insert the device (connector end first) into the device slot. Connect the device cables (see “Device Cabling”). Align the holes in the device with the holes in the sides of the system unit. Secure the device to the system with the four screws, two to a side, that come with the device.
  • Page 129: Replacing The Front And Side Panels

    Option Installation 3-31 Replacing the Front and Side Panels Replace the front panel only after it has been removed in a 5 1/4-inch device installation. If you are installing a 5 1/4-inch device, see “Installing the 5 1/4-Inch Device.” Align the four front panel tabs with the holes in the front of the system unit. Evenly press the front panel into position until the tabs lock the panel in place.
  • Page 130: Parallel Printer

    3-32 Option Installation Parallel Printer NOTE: Before connecting a printer to the system, be sure that you have set up the printer correctly. Follow the setup instructions that come with the printer. Make sure the power to the system unit and printer are off. Connect the printer cable to the printer port on the rear of the system unit (see Figure 3-28).
  • Page 131: Scsi Devices

    Option Installation 3-33 Connect one end of the serial cable to one of the two serial ports on the rear of the computer (see Figure 3-29). Secure the cable with the screws provided. Connect the other end to the serial device. Figure 3-29 Connecting an RS-232C Cable SCSI Devices Connect an external SCSI device to the back of the system unit as follows.
  • Page 132 3-34 Option Installation Connect the other end to the SCSI device. NOTE: After powering on the system and SCSI device, access the SCSISelect utility to set the SCSI ID and remove the termination on the SCSI adapter board (see Section 2 for information on accessing SCSISelect).
  • Page 133: Section 4 Maintenance And Troubleshooting

    In the U.S., call 1(800) 632-4565 In Canada, call 1(800) 727-2787 To obtain option information, literature, dealer Call 1(800) NEC-INFO locations, and sales leads To open a service call or speak to a technician In the U.S., call 1(800) 632-4565 To send technical questions over email tech-support@neccsd.com...
  • Page 134: Online Services

    The following sections provide valuable information on how to access the various online services available for your use. NEC’s FastFacts Service NEC’s FastFacts service is a self-help, automated electronic information service for obtaining up-to-date product application notes, installation procedures, troubleshooting tips, data sheets, technical information bulletins, illustrated parts lists, part numbers, and other information about the system.
  • Page 135: Neccsd Bulletin Board Service

    Maintenance and Troubleshooting Listen to the instructions provided by the voice prompts. Press if you do not want an introduction to FastFacts. Follow the automated instructions for ordering the document or catalog. Press if you want an introduction to FastFacts. Follow the automated instructions for ordering the catalog or document.
  • Page 136 Maintenance and Troubleshooting Flow control: Xon/Xoff (select Hardware if using 14.4 bps or higher) Following the HyperTerminal instructions, enter the BBS phone number (508-635-4706). Your business phone system and/or location might require a 9 1 or 1 prefix. NOTE: The first time that you use the BBS, you are requested to provide information for a new user questionnaire.
  • Page 137: E-Mail/Fax Technical Support Service

    Maintenance and Troubleshooting E-mail/Fax Technical Support Service If you have a modem, the NECCSD Technical Support Center offers technical support by E-mail over the Internet network. The Internet address is: tech-support@neccsd.com If you have access to a fax machine or fax/modem, you can also fax technical questions to the NECCSD Technical Support Center.
  • Page 138: Neccsd Technical Support Services

    Maintenance and Troubleshooting NECCSD Technical Support Services NECCSD also offers direct technical support through its Technical Support Center. (NECCSD technical support is for U.S. and Canadian customers only; international customers should check with their sales provider.) Direct assistance is available 24 hours a day, seven days a week. Call the NECCSD Technical Support Center, toll free, at 1-800-632-4565 (for U.S.
  • Page 139: Keyboard Cleaning

    Maintenance and Troubleshooting Local distributors and dealers may sell diskette drive head cleaning kits. These kits contain special diskettes and cleaning solution. Do not use the abrasive head cleaning kits (kits without cleaning solution). Insert the diskette immediately after powering on the system, before the disk boot-up. Allow the diskette drive heads to clean for about 30 seconds.
  • Page 140: Troubleshooting

    Maintenance and Troubleshooting Figure 4-1 Removing the Mouse Ball Cover Turn the mouse over so that the ball and cover fall into your palm. Gently push the ball out of the large opening in the side of the ball cover. Clean the mouse as follows: Clean the mouse ball with tap water or tap water and a mild detergent.
  • Page 141: System Error Messages

    Maintenance and Troubleshooting Table 4-2 System Error Messages Message Description Address Line Short Error in the address decoding circuitry on the system board. Cache Memory Failure, Do Cache memory is defective. Replace the CPU module. Not Enable Cache CMOS Battery Failed CMOS RAM battery power is low.
  • Page 142: Pci Error Messages

    4-10 Maintenance and Troubleshooting Table 4-2 System Error Messages Message Description Off Board Parity Error Parity error in the installed expansion memory. The format is: OFF BOARD PARITY ERROR ADDR (HEX) = (XXXX) XXXX is the hex address where the error occurred. Slave DMA Controller Error Error in the slave channel.
  • Page 143: Diagnosing And Solving Problems

    Maintenance and Troubleshooting 4-11 Table 4-3 PCI Error Messages Message Description Primary IDE Controller The primary IDE controller has requested a resource that is Resource Conflict already in use. Primary Input Device Not The designated primary input device (keyboard, mouse, or Found other, if input is redirected) could not be found.
  • Page 144: Problems And Solutions

    4-12 Maintenance and Troubleshooting Table 4-4 Problems and Solutions Problem Symptom Solution No power Power lamp on computer 1. Check that the power cord is plugged status panel will not light. into the AC connector on the computer. Check that the other end of the cord is plugged into a live properly grounded AC power outlet.
  • Page 145 Maintenance and Troubleshooting 4-13 Table 4-4 Problems and Solutions Problem Symptom Solution Operating system Intermittent beeping at 1. Check system configuration and switch does not boot power-on. Computer beeps settings (refer to Appendix B). more than once and is unable to complete boot-up.
  • Page 146 4-14 Maintenance and Troubleshooting Table 4-4 Problems and Solutions Problem Symptom Solution Hard disk Hard disk drive lamp does not 1. Check cable connections between malfunction light but hard disk drive can lamp and system board. be accessed. Hard disk controller failure 1.
  • Page 147 Maintenance and Troubleshooting 4-15 Table 4-4 Problems and Solutions Problem Symptom Solution Monitor Unable to synchronize 1. Adjust the monitor's synchronization malfunction display. controls. 2. Check that the monitor's resolution matches the video setting or the video driver used (see Section 1). 3.
  • Page 148 4-16 Maintenance and Troubleshooting Table 4-4 Problems and Solutions Problem Symptom Solution Cannot access CD-ROM 1. Check signal/power connections reader. between reader, PCB, power supply. 2. Check master/slave settings. 3. Check power supply. 4. Check IDE cable. Replace as necessary. 5.
  • Page 149: Beep Codes

    Maintenance and Troubleshooting 4-17 Beep Codes One beep indicates that the system has completed its power-on self-test. If a long beep or a series of long beeps occurs, power off the computer and try again. If the long beeps persist, see Table 4-5 for the diagnostic beep codes.
  • Page 150 4-18 Maintenance and Troubleshooting Locate the battery socket on the system board (see Figure 4-2). Figure 4-2 Battery Socket Location Carefully lift the battery from the socket tabs and out of the socket. Figure 4-3 Battery Removal With the positive (+) side facing up, press the new battery into the socket. Replace the system unit cover.
  • Page 151: Disassembly And Reassembly

    Section 5 Repair DISASSEMBLY AND REASSEMBLY This section contains step-by-step disassembly procedures for the system unit. Reassembly is the reverse of disassembly. Each procedure is supported by a simplified disassembly illustration to facilitate removal. The detailed exploded-view diagram and parts lists for the systems are included at the end of this section.
  • Page 152: System Unit Cover Removal

    Repair When disassembling the system unit, follow these general rules. Disconnect all peripherals. When handling boards or chips, touch the system unit frame to discharge static electricity. Do not disassemble parts other than those specified in the procedure. All screws are Phillips-head, unless otherwise specified. Label all removed connectors.
  • Page 153 Repair Figure 5-1 Cover Screws From the rear of the system, grasp the handle and pull it back so that the cover clears the padlock slot (see Figure 5-2). Figure 5-2 Releasing the System Unit Cover Pull the cover up and free it from the chassis.
  • Page 154: Side Panel Removal

    Repair Side Panel Removal Remove the system unit side panel as follows: WARNING: Before removing the system unit side panel, turn off the power and unplug the system power cable. Power is removed only when the power cable is unplugged. Remove the system unit cover as previously described (see “System Unit Cover Removal”).
  • Page 155: Simm Removal

    Repair Pull the board out of the connector. You might have to gently rock the board from side-to-side to release it from its connector. Figure 5-4 Expansion Board Removal SIMM Removal Remove any optional SIMM sticks from the system board as follows: CAUTION: Reduce static discharge by touching the system's metal chassis.
  • Page 156: System Board Simm Sockets

    Repair Locate the SIMMs sockets on the system board (see Figure 5-5). Figure 5-5 System Board SIMM Sockets Press the metal clips at the outer edges of the socket away from the SIMM (see Figure 5-6). Push the SIMM away from the locking tabs and remove it from the socket. Repeat steps 3 and 4 for each SIMM being removed.
  • Page 157: Front Panel Assembly Removal

    Repair Front Panel Assembly Removal Remove the front panel from the system unit as follows: Remove the system unit cover as previously described (see “System Unit Cover Removal”). Disconnect the LED and IR cables on the front panel from the system board. (See Appendix A for system board connector locations.) Carefully pull on the front panel, releasing the six tabs that secure the panel to the system chassis (see Figure 5-).
  • Page 158: 1/2-Inch Diskette Drive Removal

    Repair Store the slot cover in case you choose to use it in the future. Figure 5-8 Removing the Slot Cover 3 1/2-Inch Diskette Drive Removal Remove the 3 1/2-inch diskette drive as follows: Remove the system unit cover as previously described (see “System Unit Cover Removal”).
  • Page 159 Repair Figure 5-10 Diskette Drive Screws Slide the 3 1/2-inch diskette drive out of the system chassis (see Figure 5-11). Figure 5-11 Diskette Drive Removal NOTE: When reinstalling the diskette drive, note that all power cables are keyed to fit only in the correct position.
  • Page 160: 1/2-Inch Hard Disk Drive Removal

    5-10 Repair 3 1/2-Inch Hard Disk Drive Removal Remove the 3 1/2-inch hard disk drive as follows: Remove the system unit cover as previously described (see “System Unit Cover Removal”). Unplug the hard disk drive power and signal cables from the hard disk drive (see Figure 5-12).
  • Page 161: 1/4-Inch Device Removal

    Repair 5-11 Remove the four screws securing the 3 1/2-inch drive to the bottom of the system chassis (see Figure 5-13). Remove the drive out from the side of the chassis. Figure 5-13 Removing the 3 1/2-Inch Drive 5 1/4-Inch Device Removal Remove a 5 1/4-inch device (CD-ROM reader or other device) from the 5 1/4-inch device cage as follows: Remove the system unit cover, side panel, and front panel as previously described.
  • Page 162 5-12 Repair Remove the four screws (two to a side) securing the drive inside the system chassis. Remove the two screws securing the drive to the front of the system chassis (see Figure 5-14). Slide the device out of the slot. Figure 5-14 Removing the Device Remove the rails from the sides of the device by removing the four screws shown in Figure 5-15.
  • Page 163: Power Supply Removal

    Repair 5-13 Power Supply Removal Remove the power supply as follows: Remove the system unit cover as previously described (see “System Unit Cover Removal”). Unplug the two power cables attached to the system board's connectors. See Appendix A for connector locations. Unplug the power cables from all installed devices.
  • Page 164: Power Supply Ducting (266-Mhz Models)

    5-14 Repair Press in the two mounting tabs shown in Figure 5-17 that secure the ducting to the side of power supply. Gently remove the mounting tabs from the power supply slots. Remove the two support tabs from the slots on the power supply and lift off the ducting.
  • Page 165: System Board Removal

    Repair 5-15 System Board Removal Remove the system board per the following steps: Remove the following components as previously described: system unit cover expansion slot boards SIMMs. Remove and label all cables connected to the system board. Appendix A provides the connector identifiers and pin assignments for each connector.
  • Page 166: Processor Subsystem Removal

    5-16 Repair Processor Subsystem Removal To remove the processor subsystem (CPU module and heatsink) from the system board, proceed as follows: Remove the system unit cover as previously described (see “System Unit Cover Removal”). Remove the power supply as previously described (see “Power Supply Removal”).
  • Page 167: Illustrated Parts Breakdown

    Repair 5-17 ILLUSTRATED PARTS BREAKDOWN This subsection contains the illustrated parts breakdown (IPB) and NECCSD part numbers for the PowerMate Professional Series computers. The information in this subsection applies to the following model numbers: MT-2550-24874X MT-2560-24874X MT-2560-24874C MT-2560-2784S MT-2560-2785S. Table 5-2 lists the field-replaceable parts for the computer. Figure 5-18 provides the illustrated parts breakdown.
  • Page 168 5-18 Repair Table 5-2 PowerMate Professional Series Field-Replaceable Parts List* Item Description Part Number Keyboard, Chicony 158-052121-000 Plastic Blank Panel - 5 1/4” 158-030810-000 Front Bezel w/IR PCB and Cable 158-052129-000 PowerMate Professional Logo 158-030872-075 Panel Internal Power Cable and Switch 158-050906-001 Reset/Sleep Button 158-050896-003...
  • Page 169 158-060436-000 System Board, with Audio 158-056546-000 4.35-GB SCSI Ultra-Wide HDD 158-050395-362 (ST3433371) 3.2-GB IDE Hard Disk (Quantum 158-050395-386 Stratus) NEC 16X (max) CD-ROM Reader CDR-1600A/BR 3-1/2 inch 1.44-MB Floppy Drive 158-056414-000 (w/o Bezel) Speaker with Cable 158-050865-008 Rail Kit* 158-050893-000...
  • Page 170 5-20 Repair Figure 5-20 PowerMate Professional Series Illustrated Parts Breakdown* ____________ * This data was prepared May 1997. For an up-to-date listing of spare parts, please call FastFacts (800) 366-0476 and order document number 42181764.
  • Page 171: Powermate Professional Series Options

    Repair 5-21 Table 5-3 lists PowerMate Professional Series memory options. Table 5-3 PowerMate Professional Series Options Description Part Number 8-MB EDO SIMM (2 x 32)* 158-082630-060 16-MB EDO SIMM (4 x 32)* 158-082662-060 32-MB EDO SIMM (16 x 32)* 158-082663-060 2-MB SGRAM Video Upgrade Module for Matrox Mystique 158-052260-001A * All SIMM kits have tin edge connectors.
  • Page 172: I/O, Power Supply, And Chassis Intrusion Connectors

    Appendix A Connector Pin Assignments This appendix describes the system board connector pin assignments. Table A-1 lists the system board connectors and provides the page number where the pin assignments are defined. Table A-1 System Board Connectors Description Page Number Parallel Interface Connector Serial Interface Connectors (COM1/COM2) Keyboard and Mouse Connectors...
  • Page 173: Parallel Interface Connector

    Connector Pin Assignments Figure A-1 System Board Chassis Intrusion, Power, and I/O Connector Locations Parallel Interface Connector The following figure shows the parallel interface connector on the system board. Table A-2 provides the pin assignments. Figure A-2 Parallel Interface Connector...
  • Page 174: Serial Interface Connectors

    Connector Pin Assignments Table A-2 Parallel Interface Pin Assignments Signal Name Signal Name Strobe Auto Feed Data Bit 0 Fault Data Bit 1 INIT Data Bit 2 SLCT IN Data Bit 3 Ground Data Bit 4 Ground Data Bit 5 Ground Data Bit 6 Ground...
  • Page 175: Keyboard And Mouse Connectors

    Connector Pin Assignments Table A-3 Serial Interface Pin Assignments Signal Name Serial In- Serial Out- Keyboard and Mouse Connectors The following figure shows the keyboard and mouse connectors on the system board. The keyboard and mouse are PS/2-style connectors and can be plugged into either connector. The system unit detects their presence at power on.
  • Page 176: Usb Connectors

    Connector Pin Assignments USB Connectors Table A-5 shows the pin assignments for the universal serial bus ports. Table A-5 USB Port Pin Assignments Signal Name Power (fused) USBP0# (USBP1#) USBP0 (USBP1) Ground Audio/MIDI Connectors Tables A-6 through A-9 provide pin assignments for the audio (microphone in, line in, and line out) and MIDI connectors.
  • Page 177: Power Supply Connector

    Connector Pin Assignments Table A-9 MIDI Pin Assignments Signal Name Signal Name +5V (fused) +5V (fused) JSBUTO JSBUT2 JSX1R JSXR2 Ground MIDI-OUTR Ground JSY2R JSY1R JSBUT3 JSBUT1 MIDI-INR +5V (fused) Power Supply Connector Table A-10 provides power supply connector pin assignments. Table A-10 Power Connector Pin Assignments Signal Name Signal Name...
  • Page 178: Chassis Intrusion Connector

    Connector Pin Assignments Chassis Intrusion Connector Table A-11 provides the pin asignments for the chassis intrusion connector. Table A-11 Chassis Intrusion Pin Assignments Signal Name Ground CHS_SEC STORAGE DEVICE CONNECTORS The following figure shows the connectors on the system board for the diskette drive and IDE hard disks.
  • Page 179: Diskette Drive Connector

    Connector Pin Assignments Diskette Drive Connector Table A-12 provides pin assignments for the system board diskette drive connector. Table A-12 Diskette Drive Pin Assignments Signal Name Signal Name Ground DENSEL Ground Reserved FDEDIN Ground Index- Ground Motor Enable A- Ground Drive Select B- Ground Drive Select A-...
  • Page 180: Ide Connectors

    Connector Pin Assignments IDE Connectors Table A-13 provides the pin assignments for system board IDE connectors. The signals in parentheses are for the secondary connector. Table A-13 IDE Interface Pin Assignments Signal Name Signal Name Reset IDE Ground Host Data 7 Host Data 8 Host Data 6 Host Data 9...
  • Page 181: Led Connectors

    A-10 Connector Pin Assignments LED CONNECTORS The following figure shows the location of the LED connectors on the system board. For more information, see the following subsections. Figure A-6 LED Connectors Hard Drive LED Connector The following figure shows the hard disk LED connector on the system board. Table A-14 provides the pin assignments.
  • Page 182: Power Led Connector

    Connector Pin Assignments A-11 Power LED Connector The following figure shows the power LED connector on the system board. Table A-15 provides the pin assignments. Speaker Reset Pwr LED HDLED Infrared Sleep Power On Figure A-8 Power LED Connector Table A-15 Power LED Pin Assignments Signal Name LED_PWR (green) Ground (blue)
  • Page 183: Infrared Connector

    A-12 Connector Pin Assignments Infrared Connector The following figure shows the infrared (IR) connector on the system board. Table A-17 provides the pin assignments. Speaker Reset Pwr LED HDLED Infrared Sleep Power On Figure A-10 Infrared Connector Table A-17 Infrared Pin Assignments Signal Name IRTX Ground...
  • Page 184: Power On Connector

    Connector Pin Assignments A-13 Power On Connector The following figure shows the power on connector on the system board. Table A-19 provides the pin assignments. Speaker Reset Pwr LED HDLED Infrared Sleep Power On Figure A-12 Power On Connector Table A-19 Power On Pin Assignments Signal Name SW_ON# Ground...
  • Page 185 A-14 Connector Pin Assignments Table A-20 ISA Bus Pin Assignments Signal Signal Signal Signal IOCHK- DACK2- RSTDRV BALE IRQ9 -5 V DRQ2 -12 V 0WS- MEMCS16- SBHE- +12 V IOCS16- LA23 IOCHRDY IRQ10 LA22 SMEMW- IRQ11 LA21 SMEMR- SA19 IRQ12 LA20 IOW- SA18...
  • Page 186: Pci Pin Assignments

    Connector Pin Assignments A-15 PCI Pin Assignments Table A-21 provides PCI connector pin assignments. Table A-21 PCI Connector Pin Assignments Signal Signal Signal Signal -12 V AD16 AD17 +12 V No Connect 3.3 V CBE2- No Connect B3 FRAME- No Connect B4 No Connect IRDY- TRDY-...
  • Page 187: Simm Sockets

    A-16 Connector Pin Assignments Table A-21 PCI Connector Pin Assignments Signal Signal Signal Signal 3.3 V AD23 AD22 AD20 AD21 SREQ64- SACK64- AD19 AD18 3.3 V SIMM Sockets Table A-22 provides the SIMM socket pin assignments. Table A-22 SIMM Socket Pin Assignments Signal Signal Signal...
  • Page 188 Connector Pin Assignments A-17 Table A-22 SIMM Socket Pin Assignments Signal Signal Signal RAS0 PD1 (N/C) PD2 N/C PD3 N/C...
  • Page 189: Appendix B System Board Settings

    Appendix B System Board Settings This appendix provides jumper setting information for configuring a system that has specific requirements. Situations that require changing the jumper settings include the following: changing the processor speed setting recovering the BIOS denying access to CMOS Setup resetting the password clearing the system board CMOS values and restoring the default settings.
  • Page 190: Changing Jumper Settings

    System Board Settings CHANGING JUMPER SETTINGS To change the jumper settings, follow these steps. Power off and unplug the system and any peripheral devices. WARNING: The system power must be off before changing switch settings. Remove the system unit cover (see “Removing the System Unit Cover” in Section 3).
  • Page 191: System Board Jumper Locations

    System Board Settings System Board Jumper Locations The following figure shows jumper locations on the system board. Figure B-1 Locating System Configuration Jumpers...
  • Page 192: Changing System Board Jumper Settings

    System Board Settings The following table summarizes the system board jumper settings. Table B-1 System Board Jumper Settings Function Jumper Configuration J9C1 Processsor Frequency 2-3 (233 MHz) or 1-2 (266 MHz) 2-3 and 5-6 (233 MHz) or 1-2 and 4-5 (266 MHz) Password Clear Password clear/disabled...
  • Page 193 System Board Settings Power off and unplug the system and any peripherals. Remove the system unit cover (see “Removing the System Unit Cover” in Section 3). Locate these jumpers on the system board (see “System Board Jumper Locations” in the previous subsection). You may have to remove any installed expansion boards to access the jumpers (see “Removing Expansion Boards”...
  • Page 194: Bios Recovery

    System Board Settings BIOS Recovery If an interruption occurs during the BIOS upgrade that prevents continuation of the process, it is possible that the BIOS may be left in an unstable state. Use the following procedure to recover the BIOS. Power off the system and unplug any peripherals.
  • Page 195: Clearing Cmos

    System Board Settings Replace the system unit cover. Reconnect the system power cables and peripheral devices. Power on the system. Run Setup (see Section 2). Clearing CMOS If you want to return the system to the factory default settings, use the following procedure to clear CMOS to the default factory settings.
  • Page 196: Denying Access To Cmos Setup

    System Board Settings Replace the system unit cover (see “Replacing the System Unit Cover in Section 3). Connect system power cables and monitor. Power on the system. The system displays a system configuration error message. Power off, unplug the system and monitor, and remove the cover. Remove the jumper block from pins 5-6 and replace it on pins 4-5.
  • Page 197 System Board Settings CMOS Access Jumpers Access Allowed (default) Access Denied Figure B-5 CMOS Setup Access Jumper Replace the system unit cover (see “Replacing the System Unit Cover” in Section 3). Connect system power cables and monitor. Power on the system. The system displays a system configuration error message. Power off, unplug the system and monitor, and remove the cover.
  • Page 198: Clearing The Password

    B-10 System Board Settings Clearing the Password If you forgot your password, use the following procedure to clear the current password and to set a new one. Power off and unplug the system and any peripherals. WARNING: The system power must be off before removing the cover and changing a jumper setting.
  • Page 199 System Board Settings B-11 Replace the system unit cover. Power on the system. Run Setup to set a new password (see Section 2).
  • Page 200: Appendix C Hard Disk Drive Specifications

    Appendix C Hard Disk Drive Specifications This appendix provides specifications and jumper settings for the following hard disks used in the PowerMate Professional Series computer configurations: Quantum Stratus 3.2-GB Seagate 4.35-GB. NECCSD part numbers for the hard drives are provided in Section 5. The IDE hard drive installed in some models is set as the master device on the primary IDE connector.
  • Page 201: Hard Disk Drive Specifications

    Hard Disk Drive Specifications Table C-1 Quantum 3.2-GB Hard Disk Specifications Item Specification Recording Recording technology Multiple zone Maximum linear density 164,598 fci Encoding method 16/17 PRML Interleave Track density 7,777 tracks per inch Maximum effective area density 1204 Mbits/in Performance: Seek times: Read-on-arrival...
  • Page 202 Hard Disk Drive Specifications Table C-2 4.35-GB Seagate Hard Disk Specifications Item Specification Formatted capacity 4.35 GB Interface Ultra SCSI Performance: Internal transfer rate, ZBR 75 - 120 Mbits/sec External transfer rate 40 Sync MBbits/sec Cache, multisegmented 512 (Kbytes) Track-to-track seek, read/write 0.8/0.9 ms Average seek, read/write 8/9 ms...
  • Page 203 Hard Disk Drive Specifications...
  • Page 204: Appendix D Cd-Rom Reader Specifications And Jumper Settings

    Jumper Settings This appendix provides specifications and jumper settings for the sixteen-speed (maximum) NEC IDE CD-ROM reader used in the PowerMate Professional Series configurations. The CD-ROM reader comes preinstalled in the top 5 1/4-inch accessible device slot. The reader is connected to the secondary PCI/IDE connector on the system board via an I/O cable.
  • Page 205: Cd-Rom Reader Connectors And Jumper Settings

    Operating Temperature 5°C to 45°C CD-ROM READER CONNECTORS AND JUMPER SETTINGS The back of the NEC sixteen-speed CD-ROM reader provides the following connectors and jumpers (see Figure D-1): Analog audio line output connector — 4-pin male connector that connects the reader to the system’s sound system via an audio cable.
  • Page 206 CD-ROM Reader Specifications and Jumper Settings Pin 1 (+12V) Jumper B Jumper A (Cable Select/Master/Slave) Pin 4 (+5V) Audio Connector IDE Connector Power Connector Figure D-1 CD-ROM Connector and Jumper Locations To the left of the standard 40-pin IDE connector on the back of the CD-ROM reader are two 6-pin jumper blocks.
  • Page 207 CD-ROM Reader Specifications and Jumper Settings Table D-3 Jumper B Settings Setting Signal Disabled (unshorted) CSEL (cable select) Disabled (unshorted) SL (slave) Enabled (shorted) Master (default setting)
  • Page 208 Index Configuring Power Management, 2-22 Connections, 2-1 monitor, 2-3 Advanced menu, 2-17 printer, 3-32 Applications CD, 2-45 rear, 2-2 LANDesk Client Manager installation, SCSI, 3-33 2-46 serial, 3-32 McAfee VirusScan installation, 2-45 speakers, 2-3 Audio features, 1-17 Connectors, A-1 audio, A-5 chassis intrusion, A-7 Battery, 4-17 diskette drive, A-8...
  • Page 209 Windows NT 4.0 operating system IDE connectors, A-9 installation, 2-53 IDE translation mode Drivers other operating systems, 2-13 changing video, 2-39 Information services video, 2-38 E-mail support, 4-5 Drives, 3-3 fax support, 4-5 options, 3-16 Internet, 4-5 support, 3-16 NEC technical support, 4-6...
  • Page 210 Index-3 NEC’s FastFacts, 4-2 checking, 3-11 NEC’s ftp site, 4-5 installation, 3-13 NECCSD bulletin board service, 2-32, part numbers, 5-19 path, 3-12 NECCSD’s World Wide Web home removal, 3-13, 5-5 page, 4-5 Memory map, 1-8 World Wide Web, 4-5 Menus...
  • Page 211 Index-4 Password Setting passwords, 2-27 changing entries, 2-28 Setting system date/time, 2-11 setting, 2-27 Setting user and administrative passwords, PC health indicator, 2-35 2-29 PC Health meter, 2-36 Setup, 2-1 PCI connectors, A-15 Setup and operation, 2-1 PCI local bus, 1-12 Applications CD, 2-45 PCI/IDE ports, 1-13 CD Restore, 2-40...
  • Page 212 Index-5 secondary cache, 1-7 System cleaning, 4-6 System controls, 2-7 System memory, 1-10 System recovery, 2-41, 2-44, 2-45 System restore options, 2-41 System setup, 2-1 System Unit Cover removal, 3-3, 5-2 replacement, 3-5 Technical support, 4-6 Troubleshooting, 4-8 beep codes, 4-17 error messages, 4-8 problems and solutions, 4-11 Typematic rate delay, 2-16...
  • Page 213 (For United States Use Only) FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFERENCE STATEMENT WARNING: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
  • Page 214 BATTERY REPLACEMENT A lithium battery in your computer maintains system configuration information. In the event that the battery fails to maintain system configuration information, NEC recommends that you replace the battery. See Chapter 4 for battery replacement information. 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.

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