NEC POWERMATE P - SERVICE MANUAL 1995 Service And Reference Manual
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NEC POWERMATE P - SERVICE MANUAL 1995 Service And Reference Manual

NEC POWERMATE P - SERVICE MANUAL 1995 Service And Reference Manual

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PowerMate
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PowerMate
Service and Reference Manual
Printed in U.S.A 9/95
819-181365-000 Rev. 00

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Summary of Contents for NEC POWERMATE P - SERVICE MANUAL 1995

  • Page 1 ® PowerMate P Series PowerMate Service and Reference Manual Printed in U.S.A 9/95 819-181365-000 Rev. 00...
  • Page 2 The information disclosed in this document, including all designs and related materials, is the valuable property of NEC Corporation (NEC) and/or its licensors. NEC and/or its licen- sors, as appropriate, reserve all patent, copyright and other proprietary rights to this docu- ment, including all design, manufacturing, reproduction, use, and sales rights thereto, except to the extent said rights are expressly granted to others.

  • Page 3: Table Of Contents

    Contents Preface ........................xiii Abbreviations ......................Section 1 Technical Information System Chassis ......................1-1 System Board ......................1-2 Processor......................1-5 Secondary Cache ....................1-5 System and Video BIOS ..................1-6 Power Management ....................1-7 I/O Addressing ..................... 1-8 System Memory....................1-9 Interrupt Controller ....................
  • Page 4 Setup and Operation Unpacking and Repacking ................... 2-1 System Setup....................... 2-2 CD-ROM Reader ......................2-5 System Configuration ....................2-6 NEC Utilities and Drivers .................... 2-6 Setup Utility ......................2-6 When to Use Setup..................How to Start Setup..................How to Use Setup ..................
  • Page 5 Security Menu ...................... 2-24 Exit Menu......................2-26 Exit Saving Changes ..................2-27 Exit Discarding Changes ................2-27 Load Setup Defaults ..................2-27 Discard Changes ................... 2-27 Flash Utility ......................2-28 NEC Bulletin Board Service ................. 2-28 Using the BIOS Update Utility..............2-29...
  • Page 6 Contents Video Drivers ....................... 2-29 Changing Video Drivers..................2-30 NEC Backup Utility....................2-31 NEC Backup Controls .................. 2-32 Start Up......................2-32 Guidelines for Backups ................. 2-32 Desktop Management Interface ................... 2-33 DMI Components....................2-34 Manageable Products.................... 2-34 CI Module ......................2-34 DMI Browser .......................
  • Page 7 Contents Device Cables ....................3-16 Diskette Drive Signal Cable ................3-17 IDE Signal Cables..................3-18 System Power Cables..................3-18 Device Cabling ..................... 3-19 Cabling an IDE Device ................. 3-19 Cabling a Diskette Drive ................3-20 Storage Device Installation ................... 3-21 Removing the 3 1/2-Inch Drive Bracket ............
  • Page 8 viii Contents Blank Panel and Metal Cover Plate Removal............5-7 3 1/2-Inch Drive Bracket Removal................ 5-8 Card Guide/Fan Bracket Removal................. 5-8 Speaker Assembly Removal .................. 5-9 3 1/2-inch Diskette Drive Removal ............... 5-9 3 1/2-inch Hard Disk Drive Removal ..............5-11 5 1/4-Inch Device Removal...................
  • Page 9 Contents List of Figures System Controls and Storage Device Slots............. 1-2 Voltage Selector Switch ................2-2 Peripheral Connections .................. 2-2 Audio Connectors..................2-3 System Buttons, Lamps, and IR Window ............2-4 Typical CD-ROM Reader Controls and Indicators ......... 2-5 Side Panel Removal ..................3-4 System Board Upgrade Sockets and Connectors..........
  • Page 10 Contents 3-29 Attaching the Y-Cable ................... 3-31 3-30 Connecting Speaker Components..............3-32 3-31 Inserting the Microphone Holder into the Stand ..........3-33 3-32 Inserting the Microphone into the Holder............3-33 3-33 Adjusting the Microphone................3-34 Removing the Keyboard Enclosure ..............4-3 Removing the Mouse Ball Cover..............
  • Page 11 Partitioned Hard Disk Assignments..............2-10 Hot Key Parameters..................2-22 Security Passwords..................2-24 Recommended Memory Upgrade Path ............3-10 NEC Service and Information Telephone Numbers ........4-1 System Error Messages.................. 4-5 ISA NMI Error Messages ................4-6 Problems and Solutions.................. 4-7 Diagnostic Beep Codes..................
  • Page 12 Contents PowerMate P Series Field-Replaceable Parts List........... 5-16 PowerMate P Series Memory Options ............5-19 PowerMate P Series Documentation and Packaging........5-19 System Board Connectors................A-1 Parallel Interface Pin Assignments..............A-2 Serial Interface Pin Assignments ..............A-3 Power Connector Pin Assignments..............A-4 Diskette Drive Pin Assignments ..............

  • Page 13: 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 14: Abbreviations

    Abbreviations ampere error checking and correction alternating current enhanced capabilities port (ECP) advanced technology (IBM PC) Enhanced Graphics Adapter Bulletin Board System Enhanced Parallel Port binary-coded decimal EPROM erasable and programmable ROM BIOS Customized Utility EVGA Enhanced Video Graphics Array BIOS basic input/output system Fahrenheit...
  • Page 15 Abbreviations milliamps switch maximum Technical Assistance Center megabyte Technical Support Center Monochrome Display Adapter transistor/transistor logic modified frequency modulation tracks per inch megahertz volt microphone volts, alernating current MIDI musical instrument device interface volts, direct current multimedia PC VESA video electronics standards association millimeter Video Graphics Array...

  • Page 16: Technical Information

    Section 1 Technical Information ® The PowerMate P Series systems include the following configurations: hard disk systems (diskette drive, hard disk) multimedia systems (diskette drive, hard disk, quad-speed CD-ROM reader, speakers, microphone) All systems come standard with an Intel Pentium™ processor (120 MHz, or 133 MHz), a 3 1/2-inch diskette drive, 256 kilobyte (KB) asynchronous secondary cache, 16-megabyte (MB) random access memory (RAM), and 2 MB of video dynamic random access memory (DRAM).

  • Page 17: System Board

    Technical Information CD-ROM Reader Power Lamp Diskette Drive A Disk Lamp Power Button Reset Button IR Window Suspend Button Figure 1-1 System Controls and Storage Device Slots SYSTEM BOARD Key features of the system board include the following: Intel Pentium 120- or 133-MHz Pentium processor, depending on system configuration 16-KB internal dual write-back cache integrated on the processor (8 KB data, 8 KB instructions)
  • Page 18 Technical Information integrated graphics Peripheral Component Interconnect (PCI) graphical user interface (GUI) accelerator and motion video playback controller; supports MPEG-1 and ® Video for Windows standard 2-MB video DRAM using four 256 KB x 16-bit DRAM chips video DRAM supports resolutions of 800 x 600 with up to 16.8 million colors, 1024 x 768 with up to 64K colors, 1280 x 1024 with up to 64K colors, and 1600 x 1200 with 256 colors support for 16-bit bidirectional VESA advanced feature connector...

  • Page 19: System Board Chips

    Technical Information external connectors for connecting the following external devices: VGA-compatible monitor (standard, super, high-resolution VGA) ® personal system/2 (PS/2 )-style mouse PS/2-style keyboard bidirectional Enhanced Parallel Port (EPP) and enhanced capabilities port (ECP) are supported for a parallel printer serial devices through two buffered 16C550 UART serial ports, each supporting transfer rates of up to 19.2 KB per second multimedia speakers, microphone, and headphone connectors (multimedia...

  • Page 20: Processor

    Technical Information Table 1-1 System Board Chips Chip Description Intel 28F100BXT 1 Mb component 128k x 8 Flash ROM (128 KB) Socketed 3V lithium coin cell battery Real-time clock battery for integrated RTC on PC87306 Can be replaced by Sanyo CR2032 coin cell battery or equivalent Vibra 16S (CT2504) (multimedia Multimedia codec (digital audio and analog...

  • Page 21: System And Video Bios

    Setup utility (see Section 2 for Setup information). System BIOS is write protected and automatically enabled. 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 22: Power Management

    Technical Information The Flash ROM allows the system and video BIOS to be upgraded with the BIOS Update utility, without removing the ROM (see Section 2 for further information on the BIOS Update utility). The Flash ROM supports the reprogramming of the system BIOS and the video BIOS.

  • Page 23: I/O Addressing

    Technical Information NOTE: Power management can also be activated by pressing the Suspend button on the front of the chassis or by entering a user- configurable hot-key sequence from the keyboard. See Section 2 for power management Setup information. I/O Addressing The processor communicates with I/O devices by I/O mapping.

  • Page 24: System Memory

    Technical Information Table 1-3 I/O Address Map Address (Hex) I/O Device Name 03BC-03BF Parallel port x 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 25: Simm Memory Upgrade Path

    1-10 Technical Information CAUTION: SIMMs must match the tin metal plating used on the system board SIMM sockets. When adding SIMMs, use tin-plated SIMMs. 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 8 MB SIMMs are installed in bank 0.

  • Page 26: Interrupt Controller

    Technical Information 1-11 Interrupt Controller The interrupt controller operates as an interrupt manager for the entire system environment. The controller accepts requests from peripherals, issues interrupt requests to the processor, resolves interrupt priorities, and provides vectors for the processor to determine which interrupt routine to execute.

  • Page 27: Integrated Graphics

    1-12 Technical Information Integrated Graphics The system has an S3 Trio64V+ PCI local bus motion video playback controller and graphics accelerator integrated on the system board. State of the art techniques are used for optimizing performance in computer graphic intensive applications and graphical user interfaces (GUI).

  • Page 28: Graphics Accelerator

    Technical Information 1-13 Graphics Accelerator The graphics accelerator is specifically designed for graphics-intensive operations, text and color pixel amplification, and scrolling. The graphics accelerator provides 64-bit, ultra-high performance for demanding True Color, High Color, and pseudocolor GUI and CAD applications. The accelerator minimizes bus traffic by off-loading the tasks normally performed by the processor.

  • Page 29: Pci/Ide Ports

    1-14 Technical Information The PCI-bus operates at half the Pentium's processor speed, and supports memory transfer rates of up to 105 MB per second for reads and up to 120 MB per second for writes, depending on processor configuration. The high-bandwidth PCI-bus eliminates the data bottleneck found in traditional systems, maintains maximum performance at high clock speeds, and provides a clear upgrade path to future technologies.

  • Page 30: Serial Interface

    Technical Information 1-15 The BIOS has automatic ISA printer port sensing. If the BIOS detects an ISA printer port mapped to the same address, the built-in printer port is disabled. The BIOS also sets the first parallel interface port it finds as LPT1 and the second port it finds as LPT2. The interrupt is selected to either IRQ5 or IRQ7 via Setup.

  • Page 31: Infrared Interface

    1-16 Technical Information Table 1-7 Serial Port Addressing and Interrupts Starting I/O Address Interrupt Level Port 3F8h IRQ04 COM1 2F8h IRQ03 COM2* 3E8h IRQ04 COM3 2E8h IRQ03 COM4 * Used for IrDA data transfer Note that the COM2 port is factory set for IrDA data transfer and can only be reset to “Disabled”.

  • Page 32: Diskette Drive

    Technical Information 1-17 DISKETTE DRIVE Up to two diskette drives are supported in the system. The installed 3 1/2-inch diskette drive is connected by a single ribbon cable with two drive connectors. The diskette drive cable plugs directly into the system board. Typically, both diskette drives are terminated. Connector locations are given in Appendix A.

  • Page 33: Multimedia Components

    1-18 Technical Information MULTIMEDIA COMPONENTS Systems configured for multimedia come with audio integrated on the system board, a quad-speed CD-ROM reader, a speaker set, and a microphone. The following briefly describes each. Information on setting up and operating the speakers, microphone, and CD- ROM reader is in Section 2, “Setup and Operation.”...

  • Page 34: Surround Sound

    Technical Information 1-19 Surround Sound Surround sound, also called SRS 3D sound, in your system is a Sound Retrieval System®, which goes beyond stereo sound. It creates a three-dimensional sound image with only two conventional speakers. Using pre-recorded music, it retrieves the spatial information and restores the original three-dimensional sound field.

  • Page 35: Specifications

    1-20 Technical Information SPECIFICATIONS System specifications are included in Table 1-8. Table 1-8 Specifications Item Specification Dimensions and Width: 8.3 inches (21 cm) Weight Depth: 17 inches (43.35 cm) Height: 15.5 inches (39 cm) Weight: 21.4 lb (9.79 kg) (dependent upon options) Keyboard Dimensions and Width: 19.0 inches (48.3 cm) Weight:...
  • Page 36 Technical Information 1-21 Table 1-8 Specifications Item Specification Battery Replaceable 3-volt lithium, non-rechargeable coin-type Power Supply 200 Watt, 115 V/230V switch selectable CD-ROM Reader Standard in multimedia systems Quadruple speed Disc format: ISO 9660 Data transfer rate: 600 KB/sec mode 1, 684.4 KB/sec mode 2 Access time (typical): 230 msec Built-in buffer: 128 KB Host interface: IDE (ATAPI)
  • Page 37 1-22 Technical Information...

  • Page 38: Setup And Operation

    Setup includes unpacking, setting up, and powering on the system. It also includes information for configuring the system with the setup program, using the NEC bulletin board service, and running the BIOS update utility. Setting system board switches are described in Appendix B, “System Board Switches.”...

  • Page 39: System Setup

    Setup and Operation SYSTEM SETUP Set up the system components by making the following connections. Set the voltage selector switch to 115V (U.S. and Canada) or 230V and plug the power cord into the power socket (see Figure Section 2-1). NOTE: The correct AC input voltage must be properly set.
  • Page 40 Setup and Operation If installing a multimedia system, connect the speakers and microphone according to the procedures in “Adding External Options” in Section 3. Figure Section 2-4 identifies the audio connectors. MIDI/Joystick Microphone Line In Line Out Jack Jack Jack Figure Section 2-4 Audio Connectors Press the power button (see Figure Section 2-6) to power-on the system.
  • Page 41 Setup and Operation If a problem occurs and is not indicated by beeps, power off the system and troubleshoot. NOTE: If the system displays a message indicating that system settings have changed, run Setup (see “System Configuration” later in this section).

  • Page 42: Cd-Rom Reader

    Setup and Operation CD-ROM READER A quad-speed CD-ROM reader (see Figure Section 2-8) comes pre-installed as drive E in the multimedia configurations. The reader is set as a master device, and is connected to the secondary IDE/PCI port on the system board. Use the CD-ROM reader to load and start programs from a CD or to play audio CDs.

  • Page 43: System Configuration

    The battery supplies continuous power to the CMOS memory and maintains configuration information when system power is off. NEC UTILITIES AND DRIVERS Click on a topic for information about using NEC utilities and drivers. Setup Utility Flash Utility Video Drivers...

  • Page 44: When To Use Setup

    The battery supplies continuous power to CMOS memory and maintains configuration information when system power is off (see “Replacing the CMOS Battery”). NOTE: NEC recommends that you print out or write down your current Setup parameters and store the information in a safe place. This lets...

  • Page 45: How To Use Setup

    Setup and Operation Setup’s Main Menu appears and looks similar to the following screen. Main Menu 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 Section 2-1 Navigation Keys Function Provides help for the parameter field being displayed.

  • Page 46: Main Menu

    Setup and Operation Main Menu The following is a list of available parameters when you select the Main Menu in the legend bar. Other Main Menu parameters are available by selecting submenus. NOTE: See How to Start Setup for a look at a typical Main menu screen.
  • Page 47 2-10 Setup and Operation Jumper settings on the IDE device set the device to master or slave (see the documentation that comes with the device). Drive letters will be assigned to physical drives as follows. Table Section 2-2 Hard Disk Assignments IDE Interface Hard Drive Connector...

  • Page 48: Hard Disk Submenu

    Setup and Operation 2-11 Hard Disk Submenu The Hard Disk Submenu lets you check or change the following hard disk drive parameters. Hard Disk Type Maximum Capacity IDE Translation Mode Multiple Sector Setting Fast Programmed I/O Modes Hard Disk Type The system is shipped with default is “Auto Detected”...
  • Page 49 2-12 Setup and Operation Extended CHS mode also overcomes the 528 MB maximum size limitations imposed by the Standard CHS mode. It can be used with drives which are larger than 528 MB, but does not support the LBA mode. Auto Detected (default) allows the BIOS to examine the drive and determine the optimal mode.

  • Page 50: Language

    Setup and Operation 2-13 Multiple Sector Setting The Multiple Sector Setting field controls the number of sectors which are transferred by an IDE drive per interrupt generated. the choices are as follows: Disabled generates an interrupt generated for each sector transferred, even if the OS issues a multisector transfer.

  • Page 51: Boot Options

    2-14 Setup and Operation Boot Options When the cursor is placed in the Boot Option field and you can select it by pressing Enter. The Boot Options Submenu appears allowing parameters which affect the boot process to be set. Boot Options Submenu The Boot Options Submenu lets you check or change the following bootup parameters.

  • Page 52: Typematic Rate Programming

    Setup and Operation 2-15 Typematic Rate Programming The parameter controls whether the default of user configuration values are used for Typematic Rate Delay and Typematic Rate. Default sets the Typematic Rate to 250 msec and Typematic Rate is set to 30. Override provides the following two options.

  • Page 53: Base Memory

    2-16 Setup and Operation Base Memory This field cannot be entered, it is an information field only. The system uses 640 KB of base memory. Extended Memory This field cannot be entered, it is an information field only. Displays the amount of system memory above 1 MB.

  • Page 54: Peripheral Submenu

    Setup and Operation 2-17 Peripheral Configuration When the cursor is placed in the Peripheral Configuration field, you can select it by pressing Enter. The “Peripheral Submenu” appears for setting parameters which affect the IDE devices, diskette drive, serial ports, and parallel port. Peripheral Submenu The Peripheral Submenu lets you check or change the following peripheral parameters.

  • Page 55: Audio Configuration Mode

    2-18 Setup and Operation Parallel Port Address The parallel ports may be “Disabled.” When “Disabled” is not selected, you must choose an address. The parallel port address options are as follows. Disabled LPT3, 3BCh LPT1, 378h (default) LPT2, 278h Parallel Port Mode The Parallel Port Mode field options are as follows.

  • Page 56: Base Memory Size

    Setup and Operation 2-19 PCI Burst Banks 0 and 1 SIMM Detected Base Memory Size The Base Memory Size field controls the mapping of addresses between “512 KB” and “640 KB.” The two choices are described as follows. 512 KB directs address mapping between 512 KB and 640 KB to the ISA bus.

  • Page 57: Latency Timer (Pci Clocks)

    2-20 Setup and Operation Latency Timer (PCI Clocks) The Latency Timer (PCI CLOCKS) field controls the length of time an agent on the PCI bus can hold the bus when another agent has requested the bus. Value choices range between 0 and 256, the default value is 66. In general this should not be changed.
  • Page 58 Setup and Operation 2-21 Disabled keeps the computer in a full on state and eliminates the following power management options. IDE Drive Power Down The IDE Drive Power Down field controls whether or not a spin down command will be issued to the IDE drives when the system goes into low power mode. This field can be either “Enabled”...

  • Page 59: Plug And Play Configuration

    2-22 Setup and Operation Table Section 2-4 Hot Key Parameters Hot Key Function Powerdown Hot Key System powers down Enabled Only Powers up when any key/mouse activity is detected. Security Hot Key System secure immediately Enabled Only Keyboard lamps blink Input accepted when password typed Both Hot Keys System secure immediately...
  • Page 60 Setup and Operation 2-23 ISA Shared Memory Size The ISA Shared Memory Size field is used to set a block of system memory which will not be shadowed (shadowing is a technique which copies a block of memory from an add in the expansion board’s ROM to the same address in the system memory to allow faster access to the code and achieve higher performance).

  • Page 61: Security Menu

    2-24 Setup and Operation Boot with PnP OS The Boot with PnP OS field enables the system to boot with an operating system capable of managing plug and play add-in cards. The choices are as follows. None Other Windows95 (default) Available interrupt requests (IRQ) between IRQ3 through IRQ15 will be displayed.
  • Page 62 Setup and Operation 2-25 If the Administrative Password is in effect and Setup is entered with the User Password only the following fields may be changed. System Date System Time User Password Security Hot Key Unattended Start Power Management Hot Key NOTE: You can enter the Setup program with either a User or Supervisor password.

  • Page 63: Exit Menu

    2-26 Setup and Operation To set a password, type the password and press Enter . Reenter your password and press Enter Enter new password: [ Confirm new password: If there is already a User or Administrative Password and a dialog box with the following prompts appears.
  • Page 64 Setup and Operation 2-27 Exit Saving Changes After making your selections on the Setup menus, always select “Exit Saving Changes” to make them operative. When “Exit Saving Changes,” has been selected, the program displays this message: Exit Saving Changes? Press Enter to Continue Press ESC to Abort To save the changes and exit Setup press Enter...

  • Page 65: Flash Utility

    Performing an update is done with a BIOS flash diskette. The diskette, which contains the latest version of the BIOS code, can be obtained from NEC Technologies or, if a modem is available, the latest BIOS can be downloaded from NEC's Bulletin Board Service (BBS).

  • Page 66: Using The Bios Update Utility

    Setup and Operation 2-29 From the Main Menu, select Enter for the File menu. At the File menu, select F for a list of downloadable files. Follow the prompts to select a file for downloading. After completing downloading of the file, log off the BBS as follows. Press Enter (to continue).

  • Page 67: Changing Video Drivers

    Windows (see the following subsection “Changing Video Drivers”). Additional VGA drivers are available for a variety of software applications through the NEC Bulletin Board Service (see “NEC Bulletin Board Service” earlier in this section). NOTE: A multifrequency monitor, such as an ®...

  • Page 68: Nec Backup Utility

    NEC Backup Utility NEC Backup is a utility that makes Microsoft Backup easier to use. It helps you start up the proper backup procedure. When you choose a backup option, NEC Backup runs Microsoft Backup with the proper configuration file for your choice.

  • Page 69: Nec Backup Controls

    It appears automatically every time you run Windows. If you do not want NEC Backup to run every time you enter Windows, click on this button to remove NEC Backup from your StartUp group.

  • Page 70: Desktop Management Interface

    If incremental backups are restored out of order, files may be lost inadvertently. NEC recommends the following two-month backup schedule for reliable backups with the least amount of diskettes: A monthly Full Backup with new diskettes.

  • Page 71: Dmi Components

    The module uses the CI to communicate with the SL and provides management for a set of components defined in the PC system group standard MIF. The NEC implementation of this MIF provides management for a variety of attributes. Windows starts the CI module which must be running in the background.

  • Page 72: Usage

    Browser, it restores all the viewing screens to the last known position. Usage To start the NEC DMI Viewer, simply double click on the NEC DMI icon in the NEC Utilities group in Windows. The initial display contains the system serial number, model number, asset tag number, processor information, serial and parallel ports and their status, video information, HDD information, and memory information.
  • Page 73 If trouble is experienced in using the NEC DMI Browser, here are a few suggestions on how to clear up the problem. Reboot the system after installation, otherwise you may have problems running the NEC DMI Browser.

  • Page 74: Option Installation

    Section 3 Option Installation This section provides instructions for installing the following options: expansion boards SIMM upgrade processor upgrade data storage devices audio wave upgrade external options. All options require that the system cover be removed. Procedures for removing the cover are included in this section.

  • Page 75: Optional Hardware

    When disconnecting a cable, always pull on the cable connector or strain-relief loop, not on the cable. Optional Hardware The system supports a variety of NEC and industry-standard options. Many optional components are available for customizing the computer. The following information describes the hardware that the system can accommodate.

  • Page 76: Removing The System Unit Side Panel

    Option Installation Monitors The system supports the connection of a VGA-compatible monitor, such as NEC MultiSync 3V and MultiSync XE and XP series monitors, and a resolution (dependent on the monitor) of up to 1600 by 1200 with 256 colors, 1280 by 1024 with 256 colors, 1024 by 768 with 64,000 colors, 800 by 600 with 64,000 colors, or 800 by 600 with 16.8 million colors.

  • Page 77: Removing The Side Panel

    Option Installation Removing the Side Panel 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. Turn off and unplug the system unit. Disconnect the keyboard, mouse, monitor, and any other device (such as a printer) connected from the rear of the system.

  • Page 78: Replacing The Side Panel

    Option Installation From the rear of the system, position one hand on the protruding handle and the other hand under the side panel and slide the panel toward the rear about one inch. Lift the side panel away from the system unit. To replace the side panel, see the following procedure “Replacing the Side Panel.”...

  • Page 79: Expansion Boards

    Option Installation All options require that the system cover be removed. Procedures for removing the cover are included in this section. Use the figure to locate the sockets and connectors for system board upgrades. Bank 0 SIMM Sockets Bank 1 SIMM Sockets Audio Wave Connecdtor...

  • Page 80: Expansion Board Installation

    Option Installation ISA expansion slots support industry-standard 8-bit or 16-bit expansion boards. The shared PCI/ISA slot can be used either for a PCI or an ISA expansion board. Figure Section 3-3 Expansion Slots Locations Expansion Board Installation Remove the system unit side panel (see “Removing the Side Panel” in this section).

  • Page 81: Expansion Board Removal

    Option Installation Hold the board by its edges and insert it into the expansion slot. Align full-size expansion boards with the guide rail at the front of the system unit. Press the board firmly into the expansion slot connector. You might have to gently rock the board from side-to-side to seat it into the connector.

  • Page 82: Simm Upgrade

    Option Installation SIMM Upgrade SIMM sticks are installed into SIMM sockets on the system board. The system board provides four SIMM sockets and supports up to 128 MB of high-speed memory. The system supports the following 32-bit (non-parity) SIMMs: 1-MB by 32-bit (4-MB stick) 2-MB by 32-bit (8-MB stick) 4-MB by 32-bit (16-MB stick) 8-MB by 32-bit (32-MB stick).
  • Page 83 3-10 Option Installation Use Table Section 3-1 to determine the SIMM configuration you need to upgrade memory and to identify the sockets for SIMM installation. Table Section 3-1 Recommended Memory Upgrade Path Total Memory Bank 0 Bank 0 Bank 1 Bank 1 16 MB* 8 MB...

  • Page 84: Simm Removal

    Option Installation 3-11 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. Press the metal clips at the outer edges of the socket away from the SIMM. Push the SIMM away from the locking tabs and remove it from the socket.

  • Page 85: Processor Upgrade

    3-12 Option Installation Tilt the SIMM towards the locking tabs using equal pressure at the ends of the SIMM until it locks into the socket. Clip Notched End of SIMM Figure Section 3-7 Inserting the SIMM Replace any cables or boards that you may have removed during this procedure. Replace the system unit side panel (see “Replacing the Side Panel”).

  • Page 86: Processor Removal

    Option Installation 3-13 When upgrading the processor, you must first remove the processor currently installed in the system (see “Processor Removal”). Once removed, you can then install the upgrade processor, see “Processor Installation.” Processor Removal To remove the installed processor on the system board, proceed as follows. Remove the system unit side panel (see “Removing the Side Panel”).

  • Page 87: Processor Installation

    3-14 Option Installation Processor Installation Remove the processor currently in the system (see the previous procedure “Processor Removal”). CAUTION: Before picking up the processor, reduce static discharge by touching the metal frame of the system unit. Align the notched corner of the processor with the alignment corner in the socket and insert the processor.

  • Page 88: Audio Wave Upgrade

    Option Installation 3-15 Audio Wave Upgrade The system board provides a connector for the installation of an industry standard audio Wave upgrade (see Figure Section 3-2). Follow the installation instructions provided with the option you purchased. Data Storage Devices The following sections provides information about installing storage devices in the system. Device Support Device Slots Device Preparation...

  • Page 89: Device Preparation

    Section 3 Option Installation Figure Section 3-1 shows the device slot locations. 5 1/4-Inch Accessible Slots 3 1/2-Inch Accessible Slot 3 1/2-Inch Internal Hard Disk Slot (behind panel) Figure Section 3-1 Device Slot Locations Device Preparation Before you install a storage device in the system, follow any preinstallation instructions that come with the device.

  • Page 90: Diskette Drive Signal Cable

    3-16 Option Installation Diskette Drive Signal Cable IDE Signal Cables System Power Cables. The existing diskette drive and IDE cables each support two devices. Cable connector loca- tions on the system board are shown in the following figure. Diskette Drive Connector Primary IDE Signal...
  • Page 91 Option Installation 3-17 Attaches to 1.44-MB Diskette Drive Attaches to 1.2-MB Diskette Drive Attaches to System Board Figure Section 3-4 Diskette Drive Signal Cable IDE Signal Cables Hard disk systems come with a three-connector IDE interface cable attached to the primary IDE connector.

  • Page 92: System Power Cables

    3-18 Option Installation 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.

  • Page 93: Device Cabling

    Option Installation 3-19 Power cable connectors are keyed to fit only in the correct position. Large Power Cable Connector Small Power Cable Connector Figure Section 3-6 Power Cable Connectors Device Cabling All storage devices require a power and signal cable connection. Devices shipped with the system are already connected.

  • Page 94: Cabling A Diskette Drive

    3-20 Option Installation Connect the appropriate power cable to the power connector on the IDE device. Power Cable IDE Cable Red Edge Figure Section 3-7 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).

  • Page 95: Storage Device Installation

    Option Installation 3-21 Storage Device Installation Click on an appropriate procedure for installing a storage device in the system. Installing the 3 1/2-Inch Drive Installing the 5 1/4-Inch Device Removing the 3 1/2-Inch Drive Bracket The installation of a second 3 1/2-inch hard disk drive requires the removal of the 3 1/2-inch drive bracket.
  • Page 96 3-22 Option Installation Installing the 3 1/2-Inch Drive Use the following procedure if you are installing a second 3 1/2-inch hard disk drive into the system. Remove the system unit side panel (see “Removing the Side Panel”). Remove the 3 1/2-inch drive bracket from the system unit (see “Removing the 3 1/2-Inch Drive Bracket”).

  • Page 97: Replacing The 3 1/2-Inch Drive Bracket

    Option Installation 3-23 Connect the drive cables to the new drive (see “Cabling an IDE Device”). Re- connect any hard disk drive cables you labeled and removed earlier. Replace the system unit side panel (see “Replacing the Side Panel”). Run the Setup program to set the new configuration (see Section 2). Replacing the 3 1/2-Inch Drive Bracket Replace the 3 1/2-inch drive bracket only after it has been removed in a 3 1/2-inch drive in- stallation.

  • Page 98: Removing The Front Panel

    3-24 Option Installation Removing the Front Panel Remove the front panel only if you are installing a 5 1/4-inch device. The front panel does not need to be removed if you are installing a 3 1/2-inch hard disk drive. If you are installing a 3 1/2-inch hard disk drive, see “Installing the 3 1/2-Inch Drive.” Remove the system unit side panel (see “Removing the Side Panel”).

  • Page 99: Installing The 5 1/4-Inch Device

    Option Installation 3-25 Store the slot cover in case you choose to remove the device in the future. Slot Cover Blank Panel Tabs Slot Cover Figure Section 3-13 Removing the Blank Panels Continue to “Installing the 5 1/4-Inch Device.” Installing the 5 1/4-Inch Device Use the following procedure to install an accessible device into the 5 1/4-inch device cage.
  • Page 100 3-26 Option Installation NOTE: The device rails are labeled A and B and are not interchangeable. If the rails prevent the device from aligning properly in the system, reattach the rails on the opposite sides of the device. If you are installing an accessible device (diskette drive, tape drive, or CD-ROM reader), attach the rails to the device so that the front of the device extends be- yond the chassis and is even with the blank panels on the front of the system.

  • Page 101: Replacing The Front Panel

    Option Installation 3-27 Connect the device cables (see “Device Cabling”). Replace the system unit front panel (see “Replacing the Front Panel”). Replace the system unit cover (see “Replacing the Side Panel”). NOTE: If you installed a 1.2-MB diskette drive, remove the protective cardboard insert from the drive.

  • Page 102: Adding External Options

    3-28 Option Installation Replace the front panel screw removed earlier to secure the front panel. Continue at step of the “Installing the 5 1/4-Inch Device” procedure. ADDING EXTERNAL OPTIONS The following subsections provide information about attaching peripherals to the external connectors on the system unit.

  • Page 103: Serial Devices

    Option Installation 3-29 Serial Devices NOTE: Before connecting a serial device to the system, be sure that you have set up the serial device correctly. Follow the setup instructions that come with the option. Make sure the power to the system unit and serial device are off. Connect one end of the serial cable to one of the two serial ports on the rear of the computer.
  • Page 104 3-30 Option Installation Check the connectors on each speaker cable that came with the speakers. The left speaker cable has a black connector on each end. The other cable is a Y-cable. The Y-cable has a red and white connector at one end and the other end is black with two rings on the connector.
  • Page 105 Option Installation 3-31 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 106 3-32 Option Installation Plug the other end of the cable into a properly grounded wall outlet. AC Adapter Right Speaker +15V DC Jack Figure Section 3-24 Connecting Speaker Components To operate the speakers, turn on the system. Push the power button on the front of the right speaker. Turn on the audio source.

  • Page 107: Microphone

    Option Installation 3-33 Microphone Set up the microphone that comes with the system as follows: Insert the microphone holder into the slot in the microphone stand. Push the holder all the way into the slot. Microphone Holder Microphone Stand Figure Section 3-25 Inserting the Microphone Holder into the Stand Insert the microphone into the holder as follows: Place the microphone cable into the slot in the microphone holder.
  • Page 108 3-34 Option Installation Adjust the microphone by pivoting it up and down and side to side. Figure Section 3-27 Adjusting the Microphone...

  • Page 109: Maintenance And Troubleshooting

    Maintenance and Troubleshooting This section provides information on maintaining and troubleshooting the PowerMate P Se- ries computers. Also included in this section are NEC service telephone numbers (Table Section 4-1) and procedures for replacing the CMOS battery. Table Section 4-1 NEC Service and Information Telephone Numbers...

  • Page 110: Maintenance

    Maintenance and Troubleshooting MAINTENANCE This subsection contains general information for cleaning and checking the system, key- board, and monitor. The system, keyboard, and monitor require cleaning and checking at least once a year, and more often if operating in a dusty environment. No other scheduled maintenance or lubrica- tion is required.

  • Page 111: Keyboard Cleaning

    Maintenance and Troubleshooting Keyboard Cleaning When necessary, inspect and clean the inside of the keyboard as follows: Remove the six screws holding the keyboard enclosure together (see Figure Sec- tion 4-1). NOTE: The keyboard and cable together are considered a whole-unit, field-replaceable assembly.

  • Page 112: Mouse Cleaning

    Maintenance and Troubleshooting Mouse Cleaning Under normal conditions, the mouse has a self-cleaning mechanism that prevents a buildup of dust or lint around the mouse ball and tracking mechanism. Periodically, however, the mouse ball must be cleaned. Use the following procedure to clean the mouse. Unplug the mouse from the system.

  • Page 113: Troubleshooting

    If disassembly is required, see Section 5. Connector pin assignments are given in Appendix A. Switch settings are given in Appendix B. Error Messages Messages may appear when running NEC utilities. Table Section 4-2 describes possible system error and warning messages. Table Section 4-4 describes possible ISA NMI error messages.
  • Page 114 Maintenance and Troubleshooting Table Section 4-2 System Error Messages Message Description controller. Power off the system and check all connections. HDD Controller Failure The BIOS cannot communicate with the hard disk drive controller. Power off the system and check all connections. INTR #1 Error Interrupt channel 1 failed POST.

  • Page 115: Diagnosing And Solving Problems

    Maintenance and Troubleshooting Diagnosing and Solving Problems One beep indicates that the system has completed its POST test. If intermittent beeping occurs, power off the system and try again. If the beeping persists, see Table Section 4-6. The table summarizes problems that may develop during system operation and lists (in se- quential order) suggested corrective actions.
  • Page 116 Maintenance and Troubleshooting Table Section 4-6 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 117 Maintenance and Troubleshooting Table Section 4-6 Problems and Solutions Problem Symptom Solution Hard disk Cannot access hard disk. 1. Check signal/power connections malfunction (cont’d) between hard disk, PCB, power supply. 2. Check drive jumper settings. 3. Check power supply. 4. Check hard disk cable and hard disk. Replace as necessary.
  • Page 118 4-10 Maintenance and Troubleshooting Table Section 4-6 Problems and Solutions Problem Symptom Solution Monitor Wavy display. 1. Check that the computer and monitor malfunction are not near motors or electric fields. (cont’d) Blank display. 1. Press any key or move mouse to ensure power management has not blanked the display 2.

  • Page 119: Beep Codes

    Maintenance and Troubleshooting 4-11 Table Section 4-6 Problems and Solutions Problem Symptom Solution CD-ROM No sound from CDs. 1. Check that speaker power is on and Malfunction volume is adjusted. (cont’d) 2. Check audio software settings. 3. Check CD audio cable. Replace as necessary.

  • Page 120: Cmos Battery Replacement

    4-12 Maintenance and Troubleshooting Table Section 4-8 Diagnostic Beep Codes Message Beeps Description of Failure Processor Exception Interrupt The CPU generated an exception interrupt. Error Display Memory Read/Write The system graphics is either missing or its Error memory is faulty. This is not a fatal error. ROM Checksum Error ROM checksum value does not match the value encoded in the BIOS.
  • Page 121 Maintenance and Troubleshooting 4-13 Carefully lift the battery from the socket tabs and out of the socket. Figure Section 4-5 Battery Removal With the positive (+) side facing up, press the new battery into the socket. Replace the system unit cover. Connect external peripherals and power cables.

  • Page 122: Repair

    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 123: Side Panel 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. Do not disassemble parts other than those specified in the procedure. All screws are Phillips-head, unless otherwise specified. Label all removed connectors.
  • Page 124 Repair Remove the two side panel screws from the rear of the system unit (see Figure Section 5-1). If you have installed a padlock on the system, unlock the padlock and remove it. From the rear of the system, position one hand on the protruding handle and the other hand under the side panel and slide the panel toward the rear about one inch.

  • Page 125: Expansion Board Removal

    Repair Expansion Board Removal Remove the sound/fax/modem board and any other installed expansion board(s) per the following steps. Remove the system unit side panel (see “Side Panel Removal” in this section). If you have any cables connected to the board that you need to remove, label the connectors before you remove them.

  • Page 126: Simm Removal

    Repair SIMM Removal Remove any optional SIMM sticks from the system board as follows. Remove the side panel and any full size expansion boards as previously described. Open the clips at each end of the SIMM connector (see Figure Section 5-4). Tilt the SIMM forward, so that the SIMM can be removed from the socket.

  • Page 127: Front Panel Assembly Removal

    Repair Front Panel Assembly Removal Remove the front panel from the system unit as follows. Remove the system unit side panel (see “Side Panel Removal”). Remove the front panel screw securing the panel to the system unit. Release the two front panel tabs on the lower left side of the front panel. Tabs Figure Section 5-6 Removing the Front Panel Disconnect the LED and IR cables on the front panel from the system board.

  • Page 128: Blank Panel And Metal Cover Plate Removal

    Repair Blank Panel and Metal Cover Plate Removal Remove the blank panels and the metal cover plates from the chassis as follows. Remove the blank panel from the selected slot by pressing the panel tabs from inside the front panel and pushing the blank panel out (see Figure Section 5-7). Store the blank panel for possible later reinstallation.

  • Page 129: 1/2-Inch Drive Bracket Removal

    Repair 3 1/2-Inch Drive Bracket Removal Remove the 3 1/2-inch drive bracket as follows. Remove the side panel as previously described. Label and disconnect the cables attached to the diskette drive and any hard disk drive installed in the 3 1/2-inch bracket. Remove the screw securing the drive bracket to the 5 1/4-inch device cage and slide the bracket toward the rear of the system (see Figure Section 5-9).

  • Page 130: Speaker Assembly Removal

    Repair Speaker Assembly Removal Remove the speaker per Figure Section 5-11 and the following steps. Remove the side panel as previously described. Remove the board edge guide/fan assembly as previously described. Unplug the speaker from its connector on the system board (see Appendix A for connector assignments).
  • Page 131 5-10 Repair 3 1/2-Inch Diskette Drive Power Cable 3 1/2-Inch Diskette Drive Connector Red Edge Figure Section 5-13 3 1/2-Inch Diskette Drive Cables Remove the 3 1/2-inch drive bracket as previously described (see “3 1/2-Inch Device Bracket Removal”). Remove the four screws, two on each side, from the 3 1/2-inch drive bracket (see Figure Section 5-15).

  • Page 132: 1/2-Inch Hard Disk Drive Removal

    Repair 5-11 3 1/2-inch Hard Disk Drive Removal Remove the 3 1/2-inch hard disk drive as follows. Remove the side panel as previously described. Unplug the hard disk drive power and signal cables from the hard disk drive (see Figure Section 5-17). NOTE: When reinstalling the drives, note that all power cables are keyed to fit only in the correct position.

  • Page 133: 1/4-Inch Device Removal

    5-12 Repair Remove the 3 1/2-inch drive bracket as previously described. Remove the four screws securing the 3 1/2-inch drive to the bracket. Slide the 3 1/2-inch drive out of the bracket (see Figure Section 5-19). Figure Section 5-19 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.
  • Page 134 Repair 5-13 Align the rails with guides in the selected slot. Push the device into the slot until the rails lock in place. Device Rail Tabs Figure Section 5-21 Inserting the Device Remove the rails and ground clips from the sides of the device by removing the four screws shown in Figure Section 5-22.

  • Page 135: Power Supply Removal

    5-14 Repair Power Supply Removal Remove the power supply as follows. Remove the side panel as previously described (see “Side Panel Removal”). Remove the internal drive cage as previously described. Unplug the two power cables attached to the system board's connectors. See Appendix A for connector locations.

  • Page 136: System Board Removal

    Repair 5-15 System Board Removal Remove the system board per the following steps. Remove the following components as previously described: side panel expansion slot boards internal device cage 3 1/2-inch drive bracket SIMMs Remove and label all cables connected to the system board. Appendix A provides the connector identifiers and pin assignments for each connector.

  • Page 137: Illustrated Parts Breakdown

    Repair Illustrated Parts Breakdown This subsection contains the illustrated parts breakdown (IPB) and NEC part numbers for the PowerMate P Series computer. Table Section 5-2 lists the field-replaceable parts for the computer. Figure Section 5-28 is the illustrated parts breakdown.
  • Page 138 3 1/2-Inch x 1-Inch, 1.2 GB Hard Disk 158-050395-343 3 1/2-Inch x 1-Inch, 1.44-MB Diskette Drive 158-050912-000 3 1/2-Inch Drive Bracket 158-030824-000 5 1/4-Inch Blank Panel Cover (plastic) 158-030833-000 Logo (120/60 CPU) 158-030804-000 Logo (133/66 CPU) 158-030804-001 NEC Mouse (PS/2-compatible) 158-050789-000 Keyboard 158-050890-000 Power Cord 808-857649-101A...
  • Page 139 5-18 Repair Figure Section 5-28 PowerMate P Series Illustrated Parts Breakdown* ____________ * This data was prepared September 1995. For an up-to-date listing of spare parts, please call FastFacts (800) 366- 0476 and order document number 42181365.
  • Page 140 Repair 5-19 Table Section 5-4 PowerMate P Series Memory Options Description Part Number 4-MB SIMM Upgrade Kit (1 MB x 32-bit)* 158-053798-001 8-MB SIMM Upgrade Kit (2 MB x 32-bit)* 158-053798-002 16-MB SIMM Upgrade Kit (4 MB x 32-bit)* 158-053798-003 32-MB SIMM Upgrade Kit (8 MB x 32-bit)* 158-053798-004 * All SIMM kits have tin edge connectors.

  • Page 141: Suspend Button Connector

    Appendix A Connector Pin Assignments This appendix describes the system board connector pin assignments. Table A-1 list the system board connectors and provides the page number where the pin assignments defined. Table Appendix A-1 System Board Connectors Description Page Number Parallel Interface Connector Serial Interface Connector (COM1/COM2) Power Supply Connector...

  • Page 142: Parallel Interface Connector

    Connector Pin Assignments PARALLEL INTERFACE CONNECTOR The following figure shows the parallel interface connector on the system board. Table Appendix A-2 provides the pin assignments. Figure Appendix A-1 Parallel Interface Connector Table Appendix A-2 Parallel Interface Pin Assignments Signal Name Signal Name Strobe- Ground...

  • Page 143: Serial Interface Connectors

    Connector Pin Assignments SERIAL INTERFACE CONNECTORS The following figure shows the serial interface connector on the system board. Table Appendix A-4 provides the pin assignments. Figure Appendix A-2 Serial Interface Connectors Table Appendix A-4 Serial Interface Pin Assignments Signal Name Serial In- Serial Out- N.C.

  • Page 144: Power Supply Connector

    Connector Pin Assignments POWER SUPPLY CONNECTOR The following figure shows the power connector on the system board. Table Appendix A-6 provides the pin assignments. Figure Appendix A-3 Power Connector Table Appendix A-6 Power Connector Pin Assignments Signal Name PWRGD +5 V +12 V -12 V -5 V...

  • Page 145: Diskette Drive Connector

    Connector Pin Assignments DISKETTE DRIVE CONNECTOR The following figure shows the diskette drive connector on the system board. Table Appendix A-8 provides the pin assignments. Figure Appendix A-4 Diskette Drive Interface Connector Table Appendix A-8 Diskette Drive Pin Assignments Signal Name Signal Name Ground FDHDIN...

  • Page 146: Ide Connectors

    Connector Pin Assignments IDE CONNECTORS The following figure shows the IDE interface connector on the system board. Table Appendix A-10 provides the pin assignments. Figure Appendix A-5 IDE Interface Connector Table Appendix A-10 IDE Interface Pin Assignments Signal Name Signal Name Reset IDE Ground Host Data 7...

  • Page 147: Turbo Connector

    Connector Pin Assignments Table Appendix A-10 IDE Interface Pin Assignments Signal Name Signal Name IRQ14 IOCS16- Addr 1 Ground Addr 0 Addr 2 Chip Select 0- Chip Select 1- Activity Ground TURBO CONNECTOR The following figure shows the turbo connector on the system board. Table Appendix A-12 provides the pin assignments.

  • Page 148: Hard Drive Led Connector

    Connector Pin Assignments HARD DRIVE LED CONNECTOR The following figure shows the hard disk LED connector on the system board. Table Appendix A-14 provides the pin assignments. Figure Appendix A-7 Hard Disk LED Connector Table Appendix A-14 Hard Disk LED Pin Assignments Signal Name PULL_UP_330...

  • Page 149: Power Led Connector

    Connector Pin Assignments POWER LED CONNECTOR The following figure shows the power LED connector on the system board. Table Appendix A-16 provides the pin assignments. Figure Appendix A-8 Power LED Connector Table Appendix A-16 Power LED Pin Assignments Signal Name Ground KEY LOCK Ground...

  • Page 150: Reset Button Connector

    A-10 Connector Pin Assignments RESET BUTTON CONNECTOR The following figure shows the reset button connector on the system board. Table Appendix A-18 provides the pin assignments. Figure Appendix A-9 Reset Button Connector Table Appendix A-18 Reset Pin Assignments Signal Name Ground RESET...

  • Page 151: Suspend Button Connector

    Connector Pin Assignments A-11 SUSPEND BUTTON CONNECTOR The following figure show the suspend button connector on the system board. Table Appendix A-20 provides the pin assignments. Figure Appendix A-10 Suspend Button Connector Table Appendix A-20 Suspend Pin Assignments Signal Name + 5 V Comatose...

  • Page 152: Infrared Connector

    A-12 Connector Pin Assignments INFRARED CONNECTOR The following figure shows the infrared (IR) connector on the system board. Table Appendix A-22 provides the pin assignments. Figure Appendix A-11 Infrared Connector Table Appendix A-22 Infrared Pin Assignments Signal Name +5 V IR_RX Ground IR_TX...

  • Page 153: Fan Connector

    Connector Pin Assignments A-13 FAN CONNECTOR The following figure shows the fan connector on the system board. Table Appendix A-24 provides the pin assignments. Figure Appendix A-12 Fan Connector Table Appendix A-24 Fan Pin Assignments Signal Name Ground +12 V (fused) Ground...

  • Page 154: Speaker Connector

    A-14 Connector Pin Assignments SPEAKER CONNECTOR The following figure shows the speaker connector on the system board. Table Appendix A- 26 provides the pin assignments. Figure Appendix A-13 Speaker Connector Table Appendix A-26 Speaker Pin Assignments Signal Name SPKR_DAT SPKR_DAT connect Ground...

  • Page 155: Audio Riser I/O Connector

    Connector Pin Assignments A-15 AUDIO RISER I/O CONNECTOR The following figure shows the audio I/O riser connector on the system board (multimedia systems only). Table Appendix A-28 provides the pin assignments. Figure Appendix A-14 Audio Riser I/O Connector Table Appendix A-28 Audio Riser I/O Pin Assignments Signal Signal...

  • Page 156: Wavetable Connector

    A-16 Connector Pin Assignments WAVETABLE CONNECTOR The following figure shows the wavetable connector on the system board. Table Appendix A-30 provides the pin assignments. Figure Appendix A-15 Wavetable Connector Table Appendix A-30 Wavetable Pin Assignments Signal Name Wave Right Ground Wave Left Ground Ground...

  • Page 157: Cd-Rom Audio Connector

    Connector Pin Assignments A-17 CD-ROM AUDIO CONNECTOR The following figure shows the CD-ROM audio interface connector on the system board. Table Appendix A-32 provides the pin assignments. Figure Appendix A-16 CD-ROM Audio Interface Connector Table Appendix A-32 CD-ROM Audio Interface Pin Assignments Signal Name CD-Right Ground...
  • Page 158 A-18 Connector Pin Assignments Table Appendix A-34 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-...

  • Page 159: Pci Connectors

    Connector Pin Assignments A-19 PCI CONNECTORS The following figure shows the PCI expansion board connectors on the system board. Table Appendix A-36 provides the pin assignments. PCI Slots Figure Appendix A-18 PCI Expansion Board Connectors Table Appendix A-36 PCI Bus Pin Assignments Signal Signal Signal...
  • Page 160 A-20 Connector Pin Assignments Table Appendix A-36 PCI Bus Pin Assignments Signal Signal Signal Signal Reserved Reserved 3.3 V AD14 SPCIRST- AD13 PCLKE AD11 AD12 AGNT- AD10 REQA- Reserved AD30 AD31 3.3 V AD29 CBEO- AD28 3.3 V AD26 AD27 3.3 V AD25 AD24...

  • Page 161: Appendix B System Board Switches

    Appendix B System Board Switches Switches are set correctly at the factory for your configuration. Conditions that require changing the switch settings are as follows: You are upgrading your processor. You need to set switches for the new processor speed and processor voltage. You forgot your password and cannot boot your system.

  • Page 162: Changing Switch Settings

    System Board Switches Table Appendix B-1 System Board Switch Settings Switch Function Settings ISA bus clock speed: sets the ISA OFF = 7.5 MHz (120 MHz) bus to a slower or faster setting. 8.25 MHz (133 MHz) (default) ON = 10 MHz (120 MHz) 11 MHz (133 MHz) CPU voltage regulator: some OFF = VR (3.3 - 3.465 V)

  • Page 163: Clearing Your Password

    System Board Switches Remove the system unit side panel (see “Removing the Side Panel” in Section 3). Locate the switch bank on the system board (see Figure Appendix B-1). Change the switch setting to the appropriate position. CAUTION: Switch SW2 should only be changed to the VRE setting if your upgrade CPU documentation indicates that the required voltage must be between 3.465 V and 3.63 V.

  • Page 164: Clearing Cmos

    System Board Switches CLEARING CMOS Use the following procedure to clear CMOS to the default factory settings. CAUTION: Clearing CMOS changes your setup configuration including hard disk settings. Turn off and unplug the system and any external options. Remove the system unit side panel (see “Removing the Side Panel” in Section 3). Locate the SW4 (Reset CMOS switch) on the system board (see Figure Appendix B-1).
  • Page 165 Index Connectors, A-1 audio riser, A-15 CR-ROM audio, A-17 Advanced chipset configuration, 2-18 diskette drive, A-5 Advanced menu, 2-16 fan, A-13 Audio configuration, 2-18 feature, 1-12 Audio connector, 2-3, A-17 hard disk LED, A-8 Audio features, 1-18 IDE, A-6 Audio riser connector, A-15 infrared, A-12 Audio wave upgrade, 3-15 ISA, A-17...
  • Page 166 Index-2 installation, 3-21, 3-25 Flash ROM, 1-6 options, 3-3, 3-15 Front panel preparation, 3-16 removal, 3-24, 5-6 support, 3-15 Disassembly, 5-1 3 1/2-inch diskette drive, 5-9 Hard disk, 1-17 3 1/2-inch hard disk drive, 5-11 assignments, 2-10 5 1/4-inch device, 5-12 connector, A-6 blank panel, 5-7 LED connector, A-8...
  • Page 167 1-19, 3-33 connector, A-4 speakers, 1-19, 3-29 Precautions, 3-1 Music synthesizer, 1-18 Printer installation, 3-28 Processor, 1-5, 2-16 installation, 3-14 NEC telephone numbers, 4-1 removal, 3-13 NumLock, 2-14 upgrade, 3-3 upgrade, 3-12 Operating systems, 2-12 Operation, 2-1 Reassembly, 5-1 Options, 3-2...
  • Page 168 Index-4 Serial device integrated audio, 1-18 installation, 3-29 integrated graphics, 1-12 Serial interface, 1-15 interrupt controller, 1-11 specifications, 1-16 ISA bus, 1-13 Setup, 2-1 jumper setting, B-1 Setup and Operation, 2-1 parallel interface, 1-14 unpacking, 2-1 PCI local bus, 1-13 Setup utility, 2-6 PCI/IDE ports, 1-14 advanced, 2-16...
  • Page 169 Index-5...
  • Page 170 (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 171 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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