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NEC CT 815 Service And Reference Manual

The versatile, corporate standard, desktop computer powermate.
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The versatile, corporate standard, desktop computer
CT 815
CT 815
CT 815
CT 815
® ® ® ®



   Summary of Contents for NEC CT 815

  • Page 1

    The versatile, corporate standard, desktop computer P P P P M M M M CT 815 CT 815 CT 815 CT 815 ® ® ® ® O W E R O W E R A T E A T E...

  • Page 2

    Reproduction of this document or portions thereof without prior written approval of NECC is prohibited. NEC, PowerMate, and MultiSync are registered trademarks and AccuSync is a trademark of NEC Corporation or one of its subsidiaries. All are used under license.

  • Page 3: Table Of Contents

    Fax/Modem Board....................1-14 Network Board ......................1-14 AGP Video Board..................... 1-14 Software........................... 1-14 Preloaded Software....................1-14 NEC OS Restore CD ....................1-15 NEC Application and Driver CD................1-15 2 System Configuration Interrupt Requests ......................2-2 System Interrupts......................2-2 Parallel Port Interrupts....................2-3 Serial Port Interrupts....................

  • Page 4

    Using Hard Disk Drive Password Protection............2-20 Moving the Hard Drive..................... 2-20 FLASH Utility........................2-20 NEC INFO Center......................2-21 NEC Application and Driver CD ..................2-22 NEC OS Restore CD......................2-22 Intel Processor Serial Number Control Utility ..............2-23 System Requirements....................2-24 Installation ........................

  • Page 5

    4 System Board External Cable Connectors ....................4-2 Internal Cable Connectors ....................4-3 Jumper Settings........................4-3 Locating Jumper Blocks ..................... 4-3 Changing a Jumper Setting..................4-4 Upgrade Sockets ........................ 4-5 Processor Socket......................4-5 DIMM Sockets ......................4-5 Checking System Memory ..................4-6 Components ........................

  • Page 6

    9 Specifications System Board Specifications....................9-2 Keyboard Specifications ....................9-3 Mouse Specifications ......................9-3 Speaker Set Specifications ....................9-4 System Unit Specifications ....................9-4 Diskette Drive Specifications..................... 9-5 Hard Drive Specifications ....................9-5 CD-ROM Drive Specifications ..................9-8 DVD-ROM Drive Specifications ..................9-8 CD-RW Drive Specifications.....................

  • Page 7

    PowerMate CT 815 Desktop Front Features..............1-4 PowerMate CT 815 Minitower Rear Features ..............1-6 PowerMate CT 815 Minitower Rear Connector Locations ..........1-7 PowerMate CT 815 Desktop Rear Features............... 1-7 PowerMate CT 815 Desktop Rear Connector Locations ........... 1-8 Inside the System.......................

  • Page 8

    List of Tables PowerMate CT 815 System Configuration ................ 1-2 System Components......................1-11 Interrupt Level Assignments ....................2-2 Parallel Port Interrupts ....................... 2-3 Serial Port Interrupts ......................2-4 CMOS Clear Jumper JP18 Settings ................... 2-5 BIOS Recovery Jumper Block JP15 Settings..............2-6 Rear USB Device Selection Jumper Block JP1 Settings............

  • Page 9: Preface

    ® This manual contains technical information for servicing and repairing the NEC PowerMate CT 815 computers manufactured by NEC Computers Inc. The manual contains hardware and interface information for users who need an overview of system design. The manual includes system setup information, disassembly procedures, and an illustrated parts list.

  • Page 10: Abbreviations

    Abbreviations ampere Desktop Management Interface alternating current disk operating system acknowledge dots per inch accelerated graphics port DRAM dynamic RAM ASIC application-specific integrated circuit digital versatile disc advanced technology (IBM PC) error checking and correction AT attachment extended capabilities port ATAPI AT attachment packet interface extended data output...

  • Page 11

    Industry Standard Architecture PLCC plastic leaded chip carrier internet service provider phase lock loop interrupt request POST Power-On Self-Test kilo (1024) peak-to-peak kilo (1000) programmable peripheral interface kilobyte PROM programmable ROM Kbps Kilobits per second PS/2 personal system/2 kilogram quad flat pack kilohertz read pound...

  • Page 12

    Underwriter’s Laboratories unified memory architecture uninterruptible power supply uniform resource locator universal serial bus volt volts, alternating current video cassette recorder volts, direct current video display terminal VESA video electronics standards association VESA-compliant feature connector Video Graphics Array very high frequency VLSI very large scale integration VRAM...

  • Page 13: System Overview

    System Overview Configurations Features Components Software...

  • Page 14: Configuration

    The system can be configured as a minitower or as a desktop to suit the user’s requirements. Configuration The NEC PowerMate CT 815 systems are built-to-order systems for commercial offices. System ® ® features include an Intel...

  • Page 15

    PowerMate CT 815 System Configuration Component Description Chip Set Intel 815E with 82815 Graphics and Memory Controller Hub (GMCH), 82801BA Enhanced I/O Controller Hub (ICH2), 82802AB/AC Firmware Hub (FWH), Dynamic Video Memory Technology (DVMT), Audio/Modem-Codec 97 Controller, and System Manageability Bus (SMB)

  • Page 16: Features

    Front Features The PowerMate CT 815 system can be used as a minitower or as a desktop. The following figures show the features on the front of the system for both setups. Brief descriptions of the features follow the figure.

  • Page 17

    The system has the following controls, lamps, and devices at the front of the system (see the previous figures for control, lamp, and device locations). Power/sleep button — press this button to turn on system power. To turn off power, close ®...

  • Page 18: Rear Features

    See “Expansion Boards” in Section 3 for information about expansion board slots. See “Security Features” later in this section for information on security features. PowerMate CT 815 Minitower Rear Features A – AC Power Connector E – Expansion Slots B –...

  • Page 19: Powermate Ct 815 Minitower Rear Connector Locations

    PowerMate CT 815 Minitower Rear Connector Locations A – Keyboard Connector G – Line In B – Mouse Connector H – Line Out C – USB Port I – VGA Connector D – Parallel Port J – Serial Port 1 E –...

  • Page 20: Powermate Ct 815 Desktop Rear Connector Locations

    Fax/modem ports — some systems come with a V.90 rated PCI fax/modem board. The fax/modem board allows the connection of a phone line to the computer for fax and data communications functions. VGA monitor connector — attach a video graphics array (VGA)-compatible monitor (NEC ® MultiSync monitor, NEC AccuSync™...

  • Page 21: Inside Features

    Inside Features The following figure shows the interior of the system and its major areas. A list of features follow the figure. Inside the System A – Power Supply D – Internal Drive Bracket B – System Board E – Expansion Board Slots C –...

  • Page 22: Chassis Features

    Chassis Features The NEC convertible chassis conforms to the Intel ATX form factor specification. The chassis has the following features: standardized chassis size and dimensions standardized system board size and dimensions standardized ATX 235-watt power supply with WOL capabilities switchable drive cage so system can be used in a minitower or desktop orientation.

  • Page 23: Components

    Components The major system components are listed in the following table, along with the page number where each component is briefly described. System Components Component Go to Page System Board 1-11 System Memory* 1-12 Diskette Drive 1-12 Hard Drive* 1-12 Power Supply 1-12 Keyboard...

  • Page 24: System Memory

    CD audio connector for a CD-ROM or DVD-ROM drive digital flat panel/TV Out (DFP/TV) header for an optional DFP/TV board front panel connectors for system lamps and USB port power connectors additional connectors, including Modem In (MDM), Auxiliary In (AUX), Wake-On LAN (WOL), Wake-On Ring (WOR), case open, CPU fan.

  • Page 25: Keyboard

    Keyboard The PS/2-compatible ergodynamic keyboard is standard equipment for the system. The keyboard provides a numeric keypad, separate cursor control keys, 12 function keys, and is capable of up to 48 functions. Key status lamps on the keyboard include Num (Numeric) Lock, Caps (Capital) Lock, and Scroll Lock.

  • Page 26: Zip Drive

    If you have a Windows 2000/Windows NT configuration, you must choose the operating system you want to load. The operating system you choose is your only operating system and is the one that the NEC OS Restore program restores. NECC-provided applications, drivers, and utilities come loaded on the hard drive. You can install some of your applications from icons on the Windows desktop.

  • Page 27: Nec Os Restore Cd

    Get quick access to information about your system in the online NEC INFO Center. NEC INFO Center modules include Tour, User's Guide, Questions, Solutions, and Services. See “NEC INFO Center” in Section 2 for a description of the modules and how to use the INFO Center.

  • Page 28: System Configuration

    System Configuration Interrupt Requests Jumper Settings BIOS Setup Utility Hard Drive Security Flash Utility NEC INFO Center NEC Application and Driver CD NEC OS Restore CD Intel Processor Serial Number Control Utility...

  • Page 29: Interrupt Requests

    — Flash Utility — NEC Application and Driver CD — NEC INFO Center — NEC OS Restore CD — Intel Processor Serial Number Control Utility...

  • Page 30: Parallel Port Interrupts

    Interrupt Level Assignments Interrupt Assignment* Interrupt Device IRQ09 ACPI IRQ Holder for PCI IRQ Steering IRQ09 Intel 82801AA USB Universal Host Controller IRQ10 ACPI IRQ Holder for PCI IRQ Steering IRQ10 Intel 82801BA AC’97 Audio Controller IRQ10 Intel 82801BA SMBus Controller IRQ10 SCI IRQ used by ACPI bus IRQ11...

  • Page 31: Serial Port Interrupts

    Serial Port Interrupts The interrupts for serial port 1 and serial port 2 (if installed) are given in the following table. Any interrupts used for the built-in serial ports are not available for ISA parallel ports. Also, if serial ports share an interrupt, verify that hardware and software added to the system can share these interrupts without problems.

  • Page 32: Cmos Clear

    System Board Jumper Block Locations A – CMOS Clear (JP18) D – PS/2 Keyboard Power On (JP3) B – BIOS Recovery (JP15) E – Front USB Keyboard Wake Up (JP31) C – Rear USB Device Wake Up (JP1) F – Save to RAM (JP4) To prevent damage to the system board, do not set jumpers while power is on.

  • Page 33: Bios Recovery

    BIOS Recovery BIOS recovery jumper block JP15 is a three-pin jumper block. Descriptions for each JP15 jumper setting are provided in the following table. BIOS Recovery Jumper Block JP15 Settings Function Jumper Pins Description Normal Factory setting. Sets the system for normal operation. The BIOS uses current configuration information and passwords at power on.

  • Page 34: Front Usb Keyboard Wakeup

    Front USB Keyboard Wakeup Front USB keyboard wakeup jumper block JP31 is a three-pin jumper block for enabling or disabling the keyboard power on capability. Descriptions for each JP31 jumper setting are provided in the following table. Keyboard at Power On Jumper Block JP31 Settings Function Jumper Pins Description...

  • Page 35: Quantum Eide Hard Drive Jumper Settings

    To start the BIOS Setup Utility, follow these steps. Turn on or reboot the system. Press as soon as you see the following message at the bottom of the NEC startup screen. <F2 for BIOS Setup> You have about five seconds to press before the system boot continues.

  • Page 36: How To Use Setup

    How to Use Setup The Setup Utility has a Main Menu window and four top-level menus with submenus. The menu bar at the top of the Main Menu window lists the following top-level menus. Main — Use the Main Menu for basic system configuration. For example, select Main to set the system date, set diskette and hard disk parameters, or set the hard drive auto-detect feature.

  • Page 37: Main Menu

    Main Menu Choose the Main Menu by selecting Main in the legend bar on the Main Menu screen. Other Main Menu options are available by selecting submenus. Use the arrow keys to select one of the Main Menu options and press to select a submenu.

  • Page 38

    Main Menu Items Menu Item Settings (default is bold) Type Auto, User, CD-ROM, Floptical, Not Installed, 1-46 When set to Auto, the BIOS sets the correct values for the device, including Cylinders, Heads, Write Precompensation, Sectors, Maximum Capacity, Fast Programmed I/O Mode, 32 Bit Transfer Mode, LBA Mode, and Block Mode.

  • Page 39: Advanced Menu

    Advanced Menu Choose the Advanced Menu by selecting Advanced in the legend bar on the Main Menu screen. Other Advanced Menu options are available by selecting submenus. Use the arrow keys to select an Advanced Menu option. Press to display the submenu. Enter Items with grayed-out text are not available.

  • Page 40: Advanced Menu - Advanced Chipset Setup

    Advanced Menu - Advanced Configuration Menu Item Settings (default is bold) Try Other Boot Devices Yes, No Select Yes to cause the system to try to boot from other boot devices if there is a boot failure. Selecting No causes the boot to be carried out from selected devices.

  • Page 41: Advanced Menu - Power Management Setup

    Advanced Menu - Power Management Setup Menu Item Settings (default is bold) ACPI Standby State S1/POS, S3/STR Select S1/POS for a low wake-up latency sleeping state. In the S3/STR mode, the CPU, cache, and chipset contexts are lost. Disabled, Enabled USB Keyboard Wakeup From S3 Select Enabled to allow the system to wake up from a keyboard...

  • Page 42: Advanced Menu - Pci/plug And Play Setup

    Advanced Menu - Power Management Setup Menu Item Settings (default is bold) RTC Alarm Minute 30, 0-59 Sets real time clock alarm minute (when Resume on RTC Alarm is Enabled). RTC Alarm Second 30, 0-59 Sets real time clock alarm second (when Resume on RTC Alarm is Enabled).

  • Page 43

    Advanced Menu - Peripheral Setup Menu Item Settings (default is bold) Onboard Serial Port A Auto, 3F8/COM1, 2F8/COM2, 3E8/COM3, 2E8/COM4, Disabled Defines serial port A base I/O address. Normal, IrDA, ASKIR Serial Port A Mode Select Normal to set the port for normal use. Auto, 3F8/COM1, 2F8/COM2, 3E8/COM3, 2E8/COM4, Disabled Onboard Serial Port B If serial port B is installled, select 2F8/COM2 as the serial port B...

  • Page 44: Security Menu

    Advanced Menu - Hardware Monitor Setup Menu Item Settings (default is bold) ACPI Shut Down Disabled Temperature 60°C/140°F 65°F/149°F 70°F/158°F 75°F/167°F ACPI gives the operating system direct control over the power management and Plug and Play functions of a computer. The system shuts down at the temperature indicated.

  • Page 45: Exit Menu

    Reverts to the factory- set original settings. Hard Drive Security The NEC PowerMate CT system allows establishing password protection for the internal hard drive. Hard disk drive (HDD) password protection restricts access to the drive only if the drive is removed from the PowerMate CT system and installed in another system.

  • Page 46: Establishing Hard Disk Drive Passwords

    Once you set these passwords, NEC Computers Inc. has no capability of removing them. If you install the hard drive in another PowerMate system with hard disk drive security enabled, you must enter the password to allow access to the hard drive.

  • Page 47: Using Hard Disk Drive Password Protection

    If you install the hard drive in another NEC PowerMate system with security enabled, you must enter the master password to access the hard drive. If the hard drive is installed in another NEC PowerMate CT system with security disabled, the system prompts you to enter the master password and then a new user password.

  • Page 48: Nec Info Center

    NEC INFO Center Windows desktop. Double click on this icon to start the NEC INFO Center. The INFO Center opening screen appears (see the following screen). Click on an NEC INFO Center module of your choice, depending on the information you want to see.

  • Page 49: Nec Application And Driver Cd

    Remove the CD from the CD-ROM drive when the installation is complete. NEC OS Restore CD Use the NEC OS Restore CD to restore the system to its original factory state if a problem occurs that causes data loss or corruption. The NEC OS Restore CD provides options for a full system restore with factory-installed software or for a restore with only the operating system and drivers.

  • Page 50: Intel Processor Serial Number Control Utility

    Remove the Master Restore bootable diskette and restore CD from their drives. Insert the NEC Application and Driver CD or other CD into the drive(s). If you are using the NEC Application and Driver CD, go to “NEC Application and Driver CD” earlier in this section to complete the update.

  • Page 51: System Requirements

    This utility places an icon in the Windows system tray. The icon provides a visual status of the processor serial number. You have the option of hiding the system tray icon. You can enable or disable the processor serial number at any time. However, enabling the serial number requires restarting the system.

  • Page 52: Intel Technical Support

    Why would I want to turn off my processor serial number? Intel believes the processor serial number can provide compelling benefits to users. They are developing features in conjunction with the processor serial number to allow responsible service providers to provide services that maintain your privacy. However, if you are concerned that a given application/service using your processor number might impact your privacy, you can turn off the processor serial number using the utility.

  • Page 53: Disassembly And Reassembly

    Disassembly and Reassembly Safety Precautions System Cover Front Panel Expansion Boards DIMM Memory Modules Processor 5 1/4-Inch Accessible Devices 3 1/2-Inch Accessible Devices Internal Hard Drives CMOS Battery Front USB Port Rear Serial Port Front LED/Switch Bracket Chassis Intrusion Switch Power Supply System Board Minitower and Desktop Conversion...

  • Page 54: Powermate Ct 815 Disassembly Sequence

    This section contains step-by-step disassembly procedures for the PowerMate CT 815 system. A disassembly figure is provided with most procedures. Section 5 includes a field-level parts list and an illustrated parts breakdown showing an exploded view of the system. For complete disassembly of the system, follow the disassembly order listed in the following table.

  • Page 55: Safety Precautions

    All screws are Phillips-head, unless otherwise specified. Observe each cable connector before attempting to unplug. Use care in disconnecting and connecting cables to prevent breakage. Do not pull on the cable, pull only on the connector. Wherever possible, label any cable connector before removing it. Note where the connector goes and in what position it was installed.

  • Page 56: System Cover

    System Cover The following sections describe how to remove and replace the system cover. Remove the system cover to access the interior of the system (see “Removing the Cover,” next). Removing the Cover Remove the cover as follows. Before removing the cover, turn off system power and unplug the system power cable.

  • Page 57: Replacing The Cover

    Removing the Cover Replacing the Cover Replace the cover as follows. Ensure that all cables inside the chassis are positioned to prevent crimping, abrasion, or cutting while installing the cover. Check that the ribbon cables are folded along their fold lines and out of the direct path of the cover. Position the cover over the side of the chassis so that the back edge of the cover is about an inch beyond the back edge of the chassis (see the following figure).

  • Page 58: Front Panel

    Note If the cover does not slide all the way to the front of the chassis, check that the cover tabs at the front of the cover are properly inserted into their slots in the chassis. Also check that the locking tab is inserted into its slot on the back edge of the chassis. Replace the two previously removed thumbscrews.

  • Page 59: Expansion Board

    Insert the tabs into their slots and press the front panel up against the chassis until the front panel locks in place. Replacing the Front Panel A – Chassis Slots (3) C – Front Panel B – Front Panel Tabs (3) D –...

  • Page 60: Removing The Expansion Board Retainer Bar

    Removing the Expansion Board Retainer Bar Expansion boards and slot covers are held in place by an expansion board retainer bar. Remove and replace the retainer bar as follows. Remove the cover (see “Removing the Cover” earlier in this section). Press down on the two tabs on the retainer bar to release the tabs from their slots.

  • Page 61: Removing And Replacing An Expansion Board

    Replacing the Expansion Board Retainer Bar A – Retainer Bar End C – Lock Tab B – Retainer Bar Slot D – Lock Tab Slot Removing and Replacing an Expansion Board Remove and replace an expansion board as follows. Remove the cover (see “Removing the Cover”). Label and unplug any cables connected to the board.

  • Page 62: Removing An Expansion Board

    Removing an Expansion Board A – Expansion Board Installing a Slot Cover A – Slot Cover 3-10 Disassembly and Reassembly...

  • Page 63: Dimm Memory Module

    DIMM Memory Module See the following sections for procedures on removing and installing DIMM memory modules. See Section 4, “System Boards,” for module upgrade paths and guidelines for selecting modules. The following figure shows the locations of the DIMM module and processor sockets on the system board.

  • Page 64: Installing The Dimm Module

    Removing a DIMM Module A – Plastic Clip (2) Installing the DIMM Module Use the following steps to install a DIMM module. Remove the cover (see “Removing the Cover” earlier in this section). If you need to remove a currently installed DIMM module, see “Removing a DIMM Module”...

  • Page 65: Processor

    Processor The Pentium III processor is mounted on the system board in a Socket 370. To remove the processor, see “Removing the Processor” next. To install a processor, see “Installing a Processor” later in this section. Incorrect installation of the processor, fan, and heat sink can damage the processor, system board, or both.

  • Page 66: Installing The Processor

    Removing the Fan, Heat Sink, and Processor A – Heat Sink D – Processor B – Retention Clip E – Retention Clip Flange C – Lock Lever Installing the Processor Install a processor as follows. Remove the processor from the system (see “Removing the Processor” in the previous section).

  • Page 67

    Install a replacement heat sink and fan as follows and in accordance with any procedures included in the heat sink kit. If the kit includes a thermal pad or thermal grease, center the pad or grease on top of the processor. Align the heat sink and fan assembly with the processor and set it down on the processor (see the previous figure for alignment).

  • Page 68: 1/4-inch Accessible Device

    5 1/4-Inch Accessible Device The system has two 5 1/4-inch accessible device bays (1.6-inch high, half height), with one containing the standard CD-ROM drive or other built-to-order drive (see the following figure). Locating the Device Bays A – 3 1/2-Inch Internal Bays C –...

  • Page 69: Installing The Device Rail In The Chassis

    Device Rails and Screws” later in this section). Save the rails. Note Always keep unused NEC rails as they are needed for installation on devices without rails or that have wrong rails. You should also keep an unused bay cover and attached EMI shield as they are needed to cover an empty bay.

  • Page 70: Installing A 5 1/4-inch Accessible Device

    Installing a 5 1/4-Inch Accessible Device Before installing a storage device in the system, follow any preinstallation instructions that come with the device. For example, check the jumper settings on the device before installing it. See the documentation that comes with the device for jumper setting information. Cable correctly as the first (master) or second (slave) device on the secondary IDE channel (see the following table “IDE Cable Configurations”...

  • Page 71: Removing A 5 1/4-inch Device Bay Cover

    Save the rails and bay cover for later use. They are used to cover an empty bay. Note Keep unused NEC rails and bay covers. The bay cover cannot be replaced if there are no rails. Removing a 5 1/4-Inch Device Bay Cover Install the rails on the new 5 1/4-inch device if there are none or if the rails on the device are the wrong type.

  • Page 72: Locating The Device Rails And Screws

    Locating the Device Rails and Screws A – Screw or Locking Pin B – Device Rail Determine if the device being installed is a master device or a slave device on the primary or secondary channel (see the documentation that comes with the device and the table “IDE Cable Configurations”).

  • Page 73: 1/2-inch Accessible Device

    Locating System Board Cable Connectors A – CD Audio In C – Secondary IDE Connector (IDE2) B – Primary IDE Connector (IDE1) D – Diskette Drive Connector 3 1/2-Inch Accessible Device The following sections describe how to remove a 3 1/2-inch accessible device (such as a diskette drive or a Zip drive) from a 3 1/2-inch accessible device bay.

  • Page 74: Installing A 3 1/2-inch Accessible Device

    Removing the Two-Device Bracket A – Two-Device Bracket B – Bracket Tab Remove the three or four screws fastening the device to the bracket and slide the device out of the bracket. If installing a new device in the bay, see “Installing a 3 1/2-Inch Accessible Device” next. If the bay is to remain empty, install the bay cover and bracket front cover as follows.

  • Page 75: Removing The Bracket Cover

    Install a 3 1/2-inch device as follows. Before removing the cover, turn off system power and unplug the system power cable. Power is removed only when the power cable is unplugged. Remove the two-device bracket from the chassis. Tag and unplug the power and signal cables from the device in the bracket. Press in on the tab on each side of the bracket to unlatch it from the chassis (see the figure “Removing the Two-Device Bracket”...

  • Page 76: Internal Hard Drive

    Securing the Zip Drive A – Zip Drive B – Screws Internal Hard Drive The following sections describe how to remove or install a 3 1/2-inch hard drive in the internal drive bracket. Removing a 3 1/2-Inch Internal Hard Drive Remove a 3 1/2-inch internal hard drive from the internal drive bracket as follows.

  • Page 77: Installing A 3 1/2-inch Internal Hard Drive

    Remove the internal drive bracket from the chassis. Tag and unplug the signal and power cables from the installed hard drive(s). Remove the two screws fastening the bracket to the chassis (see the following figure). Pull the bracket straight back about an inch, until it releases from the bottom of the accessible drive cage.

  • Page 78: Installing The Internal Drive Bracket

    Install a 3 1/2-inch hard drive as follows. Remove the system cover and front panel (see “Removing the Cover” and “Removing the Front Panel”). Before removing the cover, turn off system power and unplug the system power cable. Power is removed only when the power cable is unplugged. Remove the internal drive bracket from the chassis.

  • Page 79: Cmos Battery

    CMOS Battery The system board uses a CMOS battery to maintain system configuration information. The battery is a coin-cell battery mounted on the system board (see the following figure). If the battery fails to maintain system configuration information, replace it with an identically rated battery from the same manufacturer.

  • Page 80: Front Usb Port

    Removing the Battery A – Battery B – Clip With the positive (+) side of the new battery facing up, press the battery into the socket. Replace the system cover. Connect external peripherals and power cables, and power up the system. Run the Setup Utility to reconfigure your system parameters (see “BIOS Setup Utility”...

  • Page 81: Rear Serial Port

    Rear Serial Port If installed, the rear serial port is mounted on a bracket in an expansion board slot at the rear of the chassis. Remove the rear serial port as follows. Remove the system cover (see “Removing the Cover”). Unplug the rear serial port cable from its header on the system board.

  • Page 82: Chassis Intrusion Switch

    Removing the Front LED/Switch Bracket A – Front LED/Switch Bracket Chassis Intrusion Switch Remove the chassis intrusion switch from the rear edge of the chassis as follows. Remove the system cover (see “Removing the Cover”). Unplug the chassis intrusion switch cable from its header on the system board. Press together the tabs that hold the chassis intrusion switch to the chassis (see the following figure).

  • Page 83: Power Supply

    Power Supply Remove the power supply as follows. Before removing the system cover, turn off the power and unplug the system power cable. Power is removed only when the power cable is unplugged. Turn off the system and any connected peripherals. Unplug the system AC power cord and any peripheral power cords.

  • Page 84: System Board

    System Board Remove the system board only if you cannot easily upgrade components on the system board while it is within the chassis, or if you are replacing the system board. Removing the System Board Remove the system board as follows. Remove the cover (see “Removing the Cover”).

  • Page 85: Installing The System Board

    Installing the System Board NECC recommends that you contact NECC Technical Support for assistance in removing or replacing the system board. Install the system board as follows. Align the system board with its screw holes within the chassis. The screw holes in the board should align with the holes in the chassis. The back panel connectors should fit perfectly into the back of the chassis.

  • Page 86: Converting From Desktop To Minitower

    Remove any installed bay cover(s) and rails (see “Installing a 5 1/4-Inch Accessible Device,” step 2, earlier in this section). Press in on the tab on each side of the bay cover. Pull the cover out until the cover and rails separate. Reinstall the 5 1/4-inch two-device bracket in the bottom bay by sliding the bracket into the bay until it latches in place.

  • Page 87: Accessible Device Placement For A Minitower

    Disconnect any external options (such as a keyboard and monitor) from the front or rear of the system unit. Remove the system cover and front panel (see “Removing the Cover” and “Removing the Front Panel”). Remove any installed 5 1/4-inch devices, including the 5 1/4-inch two-device bracket housing the 3 1/2-inch device (see “Removing a 5 1/4-Inch Accessible Device”...

  • Page 88

    Replace the front panel and system cover. Set the system in a vertical position. Connect any external options (such as a keyboard and monitor) to the front or rear of the system. Connect the system and peripheral power cords. 3-36 Disassembly and Reassembly...

  • Page 89: System Board

    System Board External Cable Connectors Internal Cable Connectors Jumper Settings Upgrade Sockets Components Resources...

  • Page 90: External Cable Connectors

    This section describes the locations of connectors, jumpers, and sockets on the system board, including any external cable connectors, internal board connectors and slots, jumper locations, and upgrade sockets. Included in this section are procedures for setting jumpers on the system board and a DIMM memory upgrade path for the DIMM sockets.

  • Page 91: Internal Cable Connectors

    Internal Cable Connectors Locations of the internal cable connectors on the system board are shown in the following figure. System Board Internal Cable Connectors A – CD Audio In C – IDE Primary Connector B – IDE Secondary Connector D – Diskette Drive Cable Connector Jumper Settings The following sections provide the names and locations of jumpers on the system board, and provides procedures for changing a jumper setting.

  • Page 92: Changing A Jumper Setting

    System Board Jumper Block Locations A – CMOS Clear (JP18) D – PS/2 Keyboard Power On (JP3) B – BIOS Recovery (JP15) E – Front USB Keyboard Wake Up (JP31) C – Rear USB Device Wake Up (JP1) F – Save to RAM (JP4) Changing a Jumper Setting Change a jumper setting on the system board as follows.

  • Page 93: Upgrade Sockets

    Upgrade Sockets The system board has the following upgrade sockets: processor socket DIMM sockets. Upgrade Sockets on the System Board A – PCI Expansion Board Connectors D – Processor Socket B – CNR Board Connector E – DIMM Sockets C – AGP Board Connector Processor Socket The processor installs in a 370-pin socket (Socket 370) on the system board.

  • Page 94: Checking System Memory

    Sample DIMM Upgrade Paths Total Memory* DIMM 1 DIMM 2 DIMM 3 64 MB 64 MB ---- ---- 128 MB 64 MB 64 MB ---- 128 MB 128 MB ---- ---- 256 MB 64 MB 64 MB 128 MB 256 MB 128 MB 128 MB ----...

  • Page 95: System Board Components

    64 MB to 512 MB of SDRAM upgradeable with 64-MB, 128-MB, or 256-MB modules installed in up to three DIMM sockets on the system board system BIOS Setup Utility built into the BIOS 4-Mb Flash ROM for fast economical BIOS upgrades integrated sound power management with power saving mode external connectors for connecting the following external devices:...

  • Page 96: Processor And Secondary Cache

    System Board Components Component Function 82801BA I/O Controller Hub Uses Accelerated Hub Architecture to make direct (ICH2) connection from graphics and memory to the integrated AC97 controller, IDE controller, and USB ports. Supports PCI bus interface, integrated IDE controller, USB, AC’97 Link for audio and telephone Codecs, interrupt controller, timers, 3.3V operation, power management logic, enhanced DMA controller, real-time clock, SM bus, and...

  • Page 97: System Bios

    System BIOS The PCI-compatible BIOS is contained in a 4-Mb flash memory device on the system board. The BIOS provides Power-On Self-Test (POST), system Setup program, PCI auto-configuration utility, and BIOS recovery code. The Flash ROM allows fast, economical BIOS upgrades. The Flash ROM is a reprogrammable EPROM containing both the system and video BIOS.

  • Page 98: Parallel Interface

    Parallel Interface The system has a 25-pin bidirectional parallel port on the system board. Port specifications conform to the IBM-PC standards. The port supports Enhanced Capabilities Port (ECP) and Enhanced Parallel Port (EPP) modes for devices that require ECP or EPP protocols. The protocols allow high-speed bi-directional transfer over a parallel port and increase parallel port functionality by supporting more devices.

  • Page 99: Usb Interface

    Serial Port 1 and Serial Port 2 I/O Addresses Starting I/O Address Port COM4 COM1 COM2 COM3 COM4 See Section 2, “System Configuration,” for information on resetting the ports through the BIOS Setup Utility. See Section 9, “Specifications,” for the serial interface specifications. Serial interface signals are output through the system board’s 9-pin, D-subconnector.

  • Page 100: Integrated Audio

    Integrated Audio To support multimedia applications, an AC97 Codec audio chip is integrated on the system ® board. The chip provides 16-bit stereo, Sound Blaster Pro -compatible audio. The sound system provides all the digital and analog mixing functions required for playing and recording audio on personal computers.

  • Page 101: Dma Settings

    DMA Settings The system’s DMA settings are given in the following table. DMA Settings DMA Setting Device Diskette drive Parallel port (for ECP or EPP) Direct memory access controller System Board 4-13...

  • Page 102: Illustrated Parts Breakdown

    Illustrated Parts Breakdown Ordering Parts Field Replaceable Units Illustrated Parts Breakdown...

  • Page 103: Ordering Parts

    The following tables list the telephone number for ordering spare parts and lists the field- replaceable parts for the system. The PowerMate CT 815 system illustrated parts breakdown figure is at the end of this section. Ordering Parts Use the telephone number in the following table to order spare parts.

  • Page 104

    PowerMate CT 815 System FRU Item Description 3Com Ethernet 3C905C 10/100 PCI Board Intel Ethernet PRO 10/100 PCI Board CNR Ethernet Board V.90 Fax/Modem Board Expansion Board Retention Bar Chassis Cover Thumbscrews (2) Chassis Cover Shell 10-Watt Speakers w/Cables and Power Adapter...

  • Page 105: Powermate Ct 815 Illustrated Parts Breakdown

    Illustrated Parts Breakdown The following figure shows the illustrated parts breakdown (IPB) for the PowerMate CT 815 system. Each FRU on the IPB is identified with a number that cross-references to the FRU list. PowerMate CT 815 Illustrated Parts Breakdown...

  • Page 106: Preventive Maintenance

    Preventive Maintenance System Cleaning Keyboard Cleaning Mouse Cleaning...

  • Page 107: System Cleaning

    This section contains general information for cleaning and checking the system, keyboard, and monitor. The system unit, 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 is required. Unplug all power cords before performing any maintenance.

  • Page 108: Mouse Cleaning

    Mouse Cleaning The mouse has a self-cleaning mechanism that prevents a buildup of dust or lint around the mouse ball and tracking mechanism under normal conditions. Periodically, however, the mouse ball must be cleaned. Use the following procedure to clean the mouse. Note The following procedure describes cleaning of a typical mouse and should be used as a guideline.

  • Page 109: Troubleshooting

    Troubleshooting Checklist Diagnostics...

  • Page 110: Checklist

    This section provides information to help isolate and repair system malfunctions at the field level. The system has a built-in program that automatically checks its components when the system is powered on. If there is a problem, the system displays an error message. If this happens, follow any instructions on the screen.

  • Page 111: Diskette Drive Problems

    System performance appears sluggish. Check that the system is set for optimal operation. See the operating system documentation. Check the memory requirements of the software applications. If required, install additional DIMM memory (see “DIMM Modules” in Section 3). If optional DIMM memory was added, check that it is correctly installed. System password forgotten.

  • Page 112: Keyboard/mouse Problems

    Distorted image appears on the monitor screen. Adjust the monitor’s video controls. If this does not help, turn the monitor off for several seconds, then back on. There is constant movement on the screen. A magnetic field is affecting the monitor. Move any devices (fan, motor, another monitor) that generate magnetic fields away from the monitor.

  • Page 113: Speaker Problems

    The CD does not eject due to a power failure or software error. Insert the end of a paper clip into the CD-ROM emergency eject hole. Press inward on the clip to open the CD-ROM door. The CD-ROM drive plays music CDs but the sound is not heard. Check that the speaker power is on (see “Speaker Problems”).

  • Page 114: Diagnostics

    Diagnostics 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 the following table. The table summarizes problems that may develop during system operation and lists (in sequential order) suggested corrective actions.

  • Page 115

    Problems and Solutions Problem Symptom Solution Operating system System halts during loading Power the system off. Check for proper does not boot sequence. jumper settings (see Section 2), then power-on the (cont’d) system. Check the condition of the selected bootload device (diskette, disc, or hard disk) for bad boot track or incorrect OS files.

  • Page 116

    Problems and Solutions Problem Symptom Solution Keyboard or Monitor has prompt, but Check keyboard/mouse plugged in. mouse cannot input data using malfunction keyboard or mouse. Check password (see Section 2). Disable password (see Section 2). Replace keyboard (or mouse). Replace system board. Monitor Unable to synchronize Adjust the monitor’s synchronization controls.

  • Page 117

    Problems and Solutions Problem Symptom Solution CD-ROM drive No sound from CDs. Check that speaker power is on and volume is malfunction adjusted. (cont’d) Check audio software settings. Check the CD. Check the CD-ROM drive audio cable connections. Check the CD-ROM drive audio cable. Replace as necessary.

  • Page 118: Necc Information Services

    NECC Information Services Service and Support Functions Technical Support...

  • Page 119: Service And Support Functions

    In the U.S. and Canada, call 1 (800) 632-4525 To order spare parts: Call 1 (800) 632-4525 To send technical questions by email: To fax technical questions to customer In the U.S., fax 1 (801) 579-1552 support: To access the NECC website:

  • Page 120: Email/fax Technical Support Service

    The NECC Technical Support Center offers technical support by email over the Internet network if you have access. The Internet email address is: You can also fax technical questions to the NECC Technical Support Center if you have access to a fax machine or fax/modem.

  • Page 121: Specifications

    Specifications System Board Keyboard Mouse Speaker Set System Unit Diskette Drive Hard Drive CD-ROM Drive DVD-ROM Drive CD-RW Drive Zip Drive Fax/Modem Board Network Board Power Supply Environmental and Safety Compliance...

  • Page 122: System Board Specifications

    This section contains the specifications for the various components comprising the PowerMate CT 815 system. The following table lists the specifications and the pages where the specifications can be found. System Specifications Specification Go to Page System board Keyboard Mouse...

  • Page 123: Keyboard Specifications

    System Board Specifications Feature Specification Chip Set Intel 815E with 82815 Graphics and Memory Controller Hub (GMCH), 82801BA Enhanced I/O Controller Hub (ICH2), 82802AB/AC Firmware Hub (FWH), Dynamic Video Memory Technology (DVMT), Audio/Modem-Codec 97 Controller, and System Manageability Bus I/O Controller Winbond W83627HF-AW Super I/O controller System Memory 64-MB to 512-MB in three DIMM sockets on system board...

  • Page 124: Speaker Set Specifications

    Speaker Set Specifications The specifications for the optional speaker set are included in the following table. Speaker Specifications Feature Specification Speakers Features Magnetically shielded 10-watt stereo speakers Power on/off/volume switch 15-volt AC power adapter Frequency response, 90-20 kHz, 2 dB Performance Sensitivity, 300 mV Output power, 4.5 watts...

  • Page 125: Diskette Drive Specifications

    Diskette Drive Specifications Typical specifications for a diskette drive are included in the following table. Diskette Drive Specifications Feature Specification* Recording Capacity High density mode: Unformatted: 2.00/1.00 MB Formatted: 1440 KB (512B 18 Sec) 720 KB (256B 18 Sec) Normal density mode: Unformatted: 1.00/0.50 MB Formatted: 640 KB (256B 16 Sec)

  • Page 126: Quantum 7,200 Rpm Hard Drive Specifications

    Quantum 5,400 RPM Hard Drive Specifications Feature Specification Humidity (non-condensing) Operating: 5% to 85% rh, 30°C (86°F) Non-operating: 5% to 95% rh, 40°C (104°F) Dimensions Width: 4.00 inches (101.6 mm) Length: 5.75 inches (146.1 mm) Height: 1.00 inches (25.4 mm) Weight 1.26 lbs.

  • Page 127: Maxtor 5,400 Rpm Hard Drive Specifications

    Maxtor 5,400 RPM Hard Drive Specifications Feature Specification Model 10 GB or higher Average Seek Time (typical) < 9.5 ms Rotation Speed 5,400 Interface ATA-5/UDMA 66/100 Buffer Size 512 KB Buffer Type SDRAM Temperature (non- Operating: 5° to 55° C (41° to 131°F) condensing) Non-operating: -40°...

  • Page 128: Cd-rom Drive Specifications

    CD-ROM Drive Specifications The specifications for a typical CD-ROM drive are included in the following table. CD-ROM Drive Specifications Feature Specification* CD-ROM Drive 48X maximum variable speed Interface ATAPI/EIDE Plug and Play supported Access Time 65 ms (typical) Data Transfer Rate, Max 7200 KB/sec Buffer Size 256 KB...

  • Page 129: Cd-rw Drive Specifications

    CD-RW Drive Specifications The specifications for a typical CD-RW drive are included in the following table. CD-RW Drive Specifications Feature Specification* CD-RW Drive 8X/4X/32X maximum variable speed Write/Read Speeds: Write 2, 4, 8x Write/Read 2x, 4x Read Access Time 200 ms (typical) Buffer Size 2 MB Interface...

  • Page 130: Fax/modem Board Specifications

    Fax/Modem Board Specifications The specifications for an optional fax/modem board are included in the following table. Fax/Modem Board Specifications Feature Specification* Fax/Modem Board 3COM V.90 Data (maximum speed) V90 ITU 56 Kbps ITU-T V.23 ITU-T V.34+ ITU-T V.22bis ITU-T V.34 ITU-T V.22 ITU-T V.32bis Bell 212A...

  • Page 131: Atx Power Supply Specifications

    Intel PRO 100+ WOL Network Board Specifications Feature Specification Topology 10Base-T, 100Base-TX Network Management ACPI Support Wake on LAN Intel PRO/100 Boot Agent Data Rates 10/100 Mbps Onboard Memory 6 KB cache Data Transfer Mode Bus-master DMA Controller Intel 82559 Power Requirement .67 Watts @+5VDC Operating Temperature...

  • Page 132: System Compliance

    Compliance The system meets the compliance standards listed in the following table. System Compliance Usage Standard Domestic FCC CFR 47 Part 15, Subpart B UL 1950 3rd edition Canadian C-UL C22.2 No. 950-95 ICES-003 Issue 2, Revision 1 European CD EMC Directive 89/336 EEC EN55022:1993 Class B EN50082-1:1997 CD LVD Directive 73/23 EEC...

  • Page 133

    Glossary access time The time period between the supply of an access signal and the output or acceptance of the data by the addressed system. Examples are the access times for DRAMs, SRAMs, hard drives, and CD-ROM drives. Hard drive access time is the time it takes for a computer to get data from the drive.

  • Page 134

    application programs Software designed to perform specific functions or a group of functions, like solving business or mathematical problems. Examples of applications include word processing, communications, or database management. architecture A general term for the design and construction of computer systems, particularly hardware, but also operating systems and networks.

  • Page 135

    bandwidth A measure of how much information something can carry. Specifically, data path times frequency. For example, the ISA bus has a data path of 16 bits (it can send 16 bits at a time) and typically operates at 8.33 MHz, so it has a bandwidth of 133.28 megabits per second (Mbps).

  • Page 136

    block A contiguous section of bits considered as a whole, especially in memory. On a disk, the data in one sector; in modem data transfer, the bits between checksums. board Printed circuit board. Board onto which computer components are soldered and thin wires are printed to connect the components.

  • Page 137

    bus master The ability of an expansion card to control the bus without needing intervention from the CPU. byte Group of eight contiguous bits. Frequently written as an eight-digit binary number or a two- digit hexadecimal number. One letter of the alphabet in ASCII code takes one byte. cache A special block of fast memory used for temporary storage of frequently used data for quick retrieval.

  • Page 138

    cold boot Process of starting up the computer by turning on the power. If power is already on, the process means to turn off the computer and turn it on again. A cold boot reinitializes all devices. compression Any scheme for recording data with fewer bits. For example, stating how many times something occurs can be shorter than stating each occurrence.

  • Page 139

    ECC memory Error Checking and Correcting memory. Advanced type of memory that can find and correct certain types of single-bit memory errors, providing greater data integrity. Advanced ECC can correct some double-bit errors. Extended Capabilities Port. A parallel-port standard for PCs that supports bi-directional communication between the PC and attached devices (such as a printer).

  • Page 140

    graphics accelerator A term referring to a higher end video controller that handles high-speed graphics and usually contains several megabytes of onboard video memory. Graphical User Interface. Method of presenting information on a computer screen utilizing icons, pull-down menus, and a mouse. hertz (Hz) A unit of frequency equal to one cycle per second.

  • Page 141

    I/O address Input-Output address. How the CPU sees an I/O port. It puts data into this address or reads the data in it. The device at the other end of the I/O port gets the data from that address or puts the data there, respectively.

  • Page 142

    memory Electronic storage area in a computer that retains information and programs. A computer has two types of memory: read-only memory (ROM) and random access memory (RAM). microprocessor A semiconductor central processing unit that is the principal component of a microcomputer.

  • Page 143

    page A type of message transmission in which a message is sent or received via modem to a paging device from a computer (with paging communications software) or telephone. parallel interface Interface that communicates eight bits at a time. parallel printer A printer with a parallel interface.

  • Page 144

    Random Access Memory. A storage device into which data is entered and from which data is retrieved in a nonsequential manner. On the system board, RAM is semiconductor-based memory that can be read and written to by the microprocessor or other hardware devices. In RAM, data can be directly and randomly read or written (with any choice for the address).

  • Page 145

    SMART Self-Monitoring Analysis and Reporting Technology. A hard drive feature that works in conjunction with system software (for example, LANDesk Client Manager, NEC Auto Backup) for identifying a potential problem on the hard drive and automatically backing up system files to a user-specified device, such as a tape or Zip drive.

  • Page 146

    Ultra DMA A protocol developed by Quantum Corporation and Intel that supports burst mode data transfer rates of 33.3 MBps. This is twice as fast as the previous disk drive standard for PCs, and is necessary to take advantage of new, faster Ultra ATA disk drives. The official name for the protocol is Ultra DMA/33.

  • Page 147

    WRAM Windows RAM. A type of RAM that supports two ports. This enables a video adapter to fetch the contents of memory for display at the same time that new bytes are being pumped into memory. This results in much faster display than is possible with conventional single- port RAM.

  • Page 148

    Index DVD-ROM drive, 3-18 IDE drive, 3-18, 3-22, 3-25 power, 3-18, 3-22, 3-25 3 1/2-inch accessible device Zip drive, 3-18, 3-22 installation, 3-23 CD-ROM drive, 1-5 locating, 1-4, 3-16 cables, 3-18 removal, 3-21 features, 1-13 3 1/2-inch internal device jumpers, 2-8 locating, 1-9 CD-RW drive, 1-5, 1-13 3 1/2-inch internal hard drive...

  • Page 149

    LANDesk Client Manager, 1-15 system, 7-6 Microsoft Internet Explorer, 1-14 DIMM memory mouse, 1-13 features, 1-12 NEC Application and Driver CD, 1-15 DIMMs, 4-5, 4-6 NEC INFO Center, 1-15 installing, 3-12 NEC OS Restore CD, 1-15 removing, 3-11 network board, 1-14...

  • Page 150

    Motion video controller, 4-11 IPB, 5-4 Mouse parts list, 5-2 cleaning, 6-3 features, 1-13 assignments, 2-2 NEC Application and Driver CD Jumpers features, 1-15 BIOS recovery, 2-6 installing software, 2-22 BIOS recovery JP15, 4-3 restoring software, 2-22 CD-ROM drive, 2-8...

  • Page 151

    Parallel port hard drive, using, 2-18 interrupts, 2-3 Security features Parts anti-theft bracket, 1-10 list, FRU, 5-2 chassis intrusion notification, 1-10 ordering, 5-2 cover locking tab, 1-10 Password hard drive security, 1-10 changing, 2-17 password, 1-10 setting, 2-17 Windows network, 1-10 Supervisor, 2-17 Security Menu (BIOS Setup), 2-17 User, 2-17...

  • Page 152

    4-11 rear USB device jumper, 2-6 USB front port removing, 3-28 USB port, 1-5 Utilities BIOS Setup, 2-8 NEC OS Restore, 1-15 Norton AntiVirus, 1-14 software, 1-14 Virus protection, 1-14 Voltage switch, 1-9 Windows 2000, 1-14 Windows 98, 1-14...

  • Page 153: Regulatory Statements

    Regulatory Statements The following regulatory statements include the Federal Communications Commission (FCC) Radio Frequency Interference Statement, compliance statements for Canada and Europe, battery disposal and replacement information, and the Declaration of Conformity. FCC Statement for United States Only 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.

  • Page 154: Battery Disposal

    Il y a danger d’explosion s’il y a replacement incorrect de la batterie. Remplacer uniquement avec une batterie du même type ou d’un type recommandé par le constructeur. Mettre au rébut les batteries usagées conformément aux instructions du fabricant. Battery Disposal The CMOS battery is made of lithium.

  • Page 155

    456-00138-000SRV NEC Computers Inc. 15 Business Park Way 02/01 Sacramento, CA 95828

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