The information disclosed in this document, including all designs and related materials, is
the valuable property of NEC Computer Systems Division, Packard Bell NEC, Inc.
(hereinafter “NEC CSD”) and/or its licensors. NEC CSD and/or its licensors, as appropriate, reserve all patent, copyright and other proprietary rights to this document, including all
design, manufacturing, reproduction, use, and sales rights thereto, except to the extent said
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The NEC CSD product(s) discussed in this document are warranted in accordance with the
terms of the Warranty Statement accompanying each product. However, actual
performance of each such product is dependent upon factors such as system configuration,
customer data, and operator control. Since implementation by customers of each product
may vary, the suitability of specific product configurations and applications must be
determined by the customer and is not warranted by NEC CSD.
To allow for design and specification improvements, the information in this document is
subject to change at any time, without notice. Reproduction of this document or portions
thereof without prior written approval of NEC CSD is prohibited.
Direction is a trademark of Packard Bell NEC, Inc.
NEC and MultiSync are registered trademarks of NEC Corporation, used under license.
All other product, brand, or trade names used in this publication are the trademarks or registered trademarks of their respective trademark
Table B-15 USB Connectors........................................................................................B-15
Table C-1 System Board Jumper Settings..................................................................... C-3
x Contents
Preface
This service and reference manual contains technical information necessary for servicing and
repairing Direction L Series, SPL Series, and SP Series systems. The manual includes
system setup information, procedures for installing options, and troubleshooting. The
manual is written for NEC CSD-trained customer engineers, system analysts, service center
personnel, and dealers.
The manual is organized as follows:
Section 1 — Technical Information, provides an overview of the computer features,
hardware design, interface ports, and internal devices.
Section 2 — Setup Utility, includes procedures for configuring the system through the
Setup utility program
Section 3 — Option Installation, provides installation procedures for adding optional
expansion boards, diskette and hard disk storage devices, system memory, and processor
updates.
xi
Section 4 — Maintenance and Troubleshooting, includes recommended maintenance
information, lists possible computer problems and their solutions, and has battery
replacement procedures.
Section 5 — Disassembly and Reassembly, includes computer disassembly and
reassembly procedures.
Appendix A — System Specifications, provides a list of the system specifications
including dimensions, weight, environment, safety compliance, power consumption, and
memory.
Appendix B — Connector Pin Assignments, provides a list of the internal and external
system board connector pin assignments.
Appendix C — System Resources, includes information on IRQ settings and system board
jumpers.
Abbreviations
xiii
Aampere
ACalternating current
ATadvanced technology
(IBM PC)
BBSBulletin Board Service
BCDbinary-coded decimal
BCUBIOS Customized Utility
BIOSbasic input/output system
bitbinary digit
BUUBIOS Upgrade Utility
bp ibits per inch
bpsbits per second
Ccapacitance
Ccentigrade
Cachehigh-speed buffer storage
CAMconstantly addressable memory
CAScolumn address strobe
CD/ROMcompact disk-ROM
CGcharacter generator
CGAColor Graphics Adapter
CGBColor Graphics Board
CHchannel
clkclock
cmcentimeter
CMOScomplementary metal oxide
semiconductor
COMcommunication
CONTcontrast
CPGAceramic pin grid array
CPUcentral processing unit
DACdigital-to-analog converter
DACKDMA acknowledge
DCdirect current
DIPdual in-line package
DLABDivisor Latch Address bit
DMAdirect memory access
DMACDMA controller
DOSdisk operating system
DRAMdynamic RAM
ECCerror checking and correction
EDOextended data output
EGAEnhanced Graphics Adapter
EPROMerasable and programmable
converter
RASrow address strobe
RGBred green blue
RGBIred green blue intensity
ROMread-only memory
rpmrevolutions per minute
Rread
RTCreal-time clock
R/Wread/write
Sslave
SCSISmall Computer System
Interface
SGsignal ground
SIMMsingle inline memory module
SPMstandard page mode
SRSSound Retrieval System
SVGASuper Video Graphics Array
SWswitch
TACTechnical Assistance Center
TSCTechnical Support Center
TTLtransistor/transistor logic
tpitracks per inch
USBuniversal serial bus
Vvolt
Vacvolts, alternating current
PDApersonal digital assistant
PFPplastic flat package
PIOparallel input/output
pixelpicture element
Vdcvolts, direct current
VESAvideo electronics standards
The Direction™ L Series, SPL Series, and SP Series of desktop and minitower Pentium II
systems include the following configurations:
Direction 233L
Direction 266L
Direction 300L
Direction 333L
Direction SPL233 with 24x CD-ROM drive
Direction SPL266 with 24x CD-ROM drive
Direction SPL300 with 24x CD-ROM drive
Direction SPL333 with 24x CD-ROM drive
Direction SPL233 with 32x CD-ROM drive
Direction SPL266 with 32x CD-ROM drive
Direction SPL300 with 32x CD-ROM drive
Direction SPL333 with 32x CD-ROM drive
This section provides an overview of the NEC Direction L Series, SPL Series, and SP
Series computers. These systems include the Intel® Pentium® II processor with MMX
™
technology. Table 1-1 describes the standard features of the L Series models. Table 1-2
describes the standard features of the SPL Series models. Table 1-3 describes the standard
features of the SP Series models.
The subsections that follow provide more detailed information on the system features.
1-2 Technical Information
y
Table 1-1 L Series System Features
Feature Direction 233L Direction 266L Direction 300L Direction 333L
Processor Intel Pentium II
233-MHz MMX
System
32 MB to 192 MB 32 MB to 192 MB 32 MB to 192 MB 32 MB to 192 MB
Hard Disk 3.2 GB - 9 GB 3.2 - 9 GB 3.2 - 9 GB 3.2 - 9 GB
CD-ROM
Drive
Power
Supply
32 MB to 192 MB 32 MB to 192 MB 32 MB to 192 MB 32 MB to 192 MB
512 KB, pipeline
burst
board
4 MB SGRAM 4 MB WRAM 4 MB WRAM 4 MB WRAM
System
32x 32x 32x 32x
235 W 235 W 235 W 235 W
Intel Pentium II
266-MHz MMX
512 KB, pipeline
burst
AGP graphics
board
Sound Retrieval
System
Intel Pentium II
300-MHz MMX
512 KB, pipeline
burst
AGP graphics
board
Sound Retrieval
System
Intel Pentium II
333-MHz MMX
512 KB, pipeline
burst
AGP graphics
board
Sound Retrieval
System
SYSTEM BOARD
The system board contains most of the components that provide system functions. The
following subsections provide a description of these components.
Processor
Depending on the model, the system board uses a 233-MHz, 266-MHz, 300-MHz, or 333MHz Intel Pentium II processor with MMX technology. The MMX processor improves
audio, video, and 3D graphics performance.
The processor is packaged in a Single Edge Contact (SEC) cartridge and the cartridge plugs
into the system board’s slot 1.
System Cache/Memory
To utilize the processor’s power, the system features an optimized 64-bit memory interface
and provides support for a second level cache to compliment the processor’s internal cache.
Technical Information 1-5
High-performance features include:
pipeline 32-bit addressing
64-bit data
512-KB of pipeline burst secondary cache; direct mapped write-back and
write-through organization.
Depending on the model, the system comes with 32 to 192 MB of main system memory.
Three sockets on the system board support up to 384 MB of high-speed memory using
industry-standard gold-plated dual in-line memory modules (DIMMs).
The system supports 60-ns Synchronous DRAM (SDRAM).
The system supports the following 60-ns configurations:
1-Mbit by 64 or 72 (8-MB DIMM)
2-Mbit by 64 or 72 (16-MB DIMM)
4-Mbit by 64 or 72 (32-MB DIMM)
8-Mbit by 64 or 72 (64-MB DIMM)
16-Mbit by 64 or 72 (128-MB DIMM).
Chipset
The Intel 440LX chipset provides DMA, memory, and bus control. The chipset includes the
following chips:
Intel 82443LX PCI/A.G.P. (PAC) provides bus-control signals, address paths,
and data paths for transfers between the processor’s host bus, PCI bus,
Accelerated Graphics Port (AGP), and main memory.
Intel 82371AB PCI/ISA IDE Xccelerator (PIIX4) implements the PCI-to-ISA
bridge, PCI IDE functionality, Universal Serial Bus (USB) host/hub functions,
and enhanced power management.
PCI Local Bus
The 32-bit industry-standard PCI bus is a highly-integrated input/output (I/O) interface that
offers the highest performance local bus available for the Pentium II processor. The PCI bus
supports burst modes that send large chunks of data across the bus, allowing fast displays of
high-resolution images.
The high-bandwidth PCI local bus eliminates data bottlenecks found in traditional systems,
maintains maximum performance at high clock speeds, and provides a clear upgrade path to
future technologies.
1-6 Technical Information
The PCI bus contains two embedded PCI devices: the PCI local bus IDE interface and the
PCI video/graphics controller. The PCI bus also contains a connector for attaching the bus
expansion board.
Expansion Bus
The expansion bus contains one ISA slot, three PCI slots, one PCI/ISA slot, and one AGP
video slot. The PCI ISA IDE Xccelerator chip (PIIX4) provides the logic that enables the
ISA bus functions. With 24-bit memory addressing, a 16-bit data path, and an eight MHz
clock, the ISA bus is designed to support all peripherals compatible with the IBM AT
standard. For PCI functions, the Xcelerator chip provides 32-bit memory addressing, 32-bit
data path, and a 33-MHz clock speed.
BIOS
The BIOS (Basic Input Output System) is stored in the Intel PA28FB200BX Flash
EPROM. The Flash EPROM is reprogrammable and allows fast, economical BIOS
upgrades.
The system memory map in shown in Table 1-4.
Table 1-4 System Memory Map
B
B
B
B
B
B
B
B
B
B
y
B
B
Memory Address Size Function
Technical Information 1-7
100000-18000000 384 M
FC000-FFFFF 16 K
FA000-FBFFF 8 K
F9000-F9FFF 4 K
F8000-F8FFF 4 K
E8000-E7FFF 64 K
E0000-E7FFF 32 K
C8000-DFFFF 96 K
A0000-C7FFF 160 K
9FC00-9FFFF 1 K
80000-9FBFF 127 K
00000-7FFFF 512 K
Plug and Play Support
Extended Memory
Boot Block
ECSD (Plug and Play configuration and DMI)
Reserved for BIOS
OEM Logo or Scan User Flash
POST BIOS
POST BIOS (available as UMB)
Available High DOS memory (open to ISA
and PCI bus)
Video memory and BIOS
Extended BIOS Data (movable by memor
managers)
Extended conventional memory
Conventional memory
The system comes with Plug and Play BIOS technology. Plug and Play eliminates
complicated setup procedures for installing Plug and Play expansion boards.
To add a Plug and Play expansion board, simply power off the system, install the board, and
power on the system. There are no jumpers to set and no system resource conflicts to
resolve. Plug and Play automatically configures the board for the system. The system also
supports non-Plug and Play boards.
Plug and Play is controlled by the Plug and Play BIOS and the system’s operating system.
The Plug and Play BIOS is stored in the Intel PA28FB200BX Flash EPROM on the system
board.
The Plug and Play BIOS adds several steps to the POST process. During POST, the Plug
and Play evaluates the configuration of installed boards and assigns available system
resources to the devices. On completion of Plug and Play POST, the operating system
checks to see if there are any additional resources required, then assigns available resources
to the devices.
1-8 Technical Information
CMOS Memory/Real-Time Clock Battery
The 82371AB PCI ISA IDE Xcelerator (PIIX4) on the system board stores system
information in non-volatile CMOS memory. The chip also contains the system’s real-time
clock. Both are maintained by a 3-volt coin cell lithium battery on the system board. The
battery is replaceable.
DMA/IRQ Settings
The system automatically configures interrupts requests (IRQ), direct memory access
(DMA) channels, and other parameters when adding PCI boards with minimal user
intervention.
Table 1-5 and Table 1-6 list system IRQ and DMA default settings.
Table 1-5 Interrupt Level Assignments
IRQ System Resource
NMI I/O channel check
00 Reserved, internal timer
01 Reserved, keyboard buffer full
02 Reserved, cascade interrupt from slave PIC
03 COM2*
04 COM1*
05 LPT2 (Plug and Play option)/Audio/User available
06 Diskette drive
07 LPT1*
08 Real-time clock
09 Reserved
10 User available
11 Windows Sound System*/User available
12 Onboard mouse port (if present, else user available)
13 Reserved, math coprocessor
14 Primary IDE (if present, else user available)
15 Secondary IDE (if present, else user available)
* Default; setting can be changed.
Table 1-6 DMA Assignments
DMA Resource
00 Audio
01 Audio/Parallel port
02 Diskette drive
03 ECP parallel port/Audio
04 Reserved, cascade channel
05 Available
06 Available
07 Available
IDE Ports
The system board provides two IDE ports:
Technical Information 1-9
a fast IDE port (the primary channel)
a standard IDE port (the secondary channel).
Each port supports two devices for a total of four IDE devices. The system board allows
the connection of an IDE CD-ROM drive for system configuration flexibility without the
addition of a controller.
The fast IDE port features an enhanced IDE interface which supports up to 10 MB per
second 32-bit wide data transfers on the high-performance PCI local bus. (Standard IDE
supports 2 MB to 3 MB per second on the ISA bus.) The standard hard disk and Zip drive
(in some systems) are connected to the fast IDE port (primary channel) for high
performance. The CD-ROM drive is attached to the standard IDE port (secondary channel).
I/O Ports
The system board features an enhanced parallel port, two buffered high-speed serial ports,
and two Universal Serial Bus (USB) ports.
The enhanced parallel port supports Enhanced Capabilities Port (ECP) and Enhanced
Parallel Port (EPP) modes for devices that require ECP or EPP protocols. These protocols
allow high-speed bi-directional transfer over a parallel port and increase parallel port
functionality by supporting more devices.
The two buffered high-speed serial ports use a fast 16550 UART which supports transfer
rates up to 19.2 kilobytes (KB) per second. These ports allow the installation of high-speed
serial devices for faster data transfer rates.
1-10 Technical Information
The two USB ports allow additional new plug and play serial devices without removing the
system cover. Simply plug the USB device into the port. The speed varies between
12 megabits per second (Mbps) for printers and 1.5 Mbps for mice and keyboards. Up to
127 USB devices can be connected to the computer.
The combination of the enhanced parallel port, buffered serial ports, and USB ports ensure
optimum performance for future peripheral devices and operating systems.
Sound System
The system board features Yamaha OPL® YMF715 audio chip. It integrates a 16-bit audio
codec, OPL3 FM synthesis and DAC, 3D enhanced stereo controller, and an interface for
MPU401 and a joystick. The chip also provides the following features.
Stereo analog-to-digital and digital-to-analog converters
Analog mixing, anti-aliasing, and reconstruction filters
Support for 16-bit address decode
ADPCM, A-law or µlaw digital audio compression/decompression
Full digital control of all mixer and volume control functions
Sound Blaster® and Windows Sound System™ compatibility
The system board provides connectors for the optional OPL4-ML wavetable synthesizer.
The OPL4-ML integrates the OPL3 audio system, general MIDI processor and wavetable
ROM. It provides FM synthesis and 24 distinct voices for music playback.
U.S. ROBOTICS MODEM BOARD (OPTIONAL)
Two modem boards are available: the U.S. Robotics® x2-capable Winmodem and the U.S.
Robotics x2-capable Sportster. Each modem board contains fax and modem capabilities.
The Winmodem provides fax and modem capabilities. The Sportster provides modem, fax,
full-duplex speakerphone, and voicemail capabilities. Each board provides receive transfer
rates of 56 Kbps (kilobytes per second) for data and 14.4 Kbps for fax.
DISKETTE DRIVE
The system comes standard with a 1.44-MB high-density diskette drive preinstalled in the
3 1/2-inch accessible device slot (drive A). The drive is connected to the system board via a
two-connector cable.
Technical Information 1-11
HARD DISK DRIVE
The system supports up to three IDE hard drives, the standard hard drive, and two optional
hard drives (if a Zip drive does not come standard with the system).
CD-ROM/DVD DRIVE
The drive can be used to load programs from a CD or it can be used to play audio CDs. The
drive operates at different speeds depending on whether the CD contains music or data. The
drive is fully compatible with Kodak Multisession Photo CDs™ and standard CDs.
The drive is connected to the secondary IDE/PCI port on the system board.
ZIP DRIVE
Some systems come with the Iomega® Zip 100 ATA drive. The Zip drive provides
removable 100-MB data disks and has a data transfer rate up to 1.4 MB per second.
POWER SUPPLY
The 235-watt power supply is mounted inside the system unit. It supplies power to the
system board, option boards, diskette drives, hard drives, keyboard, and mouse. A fan
inside the power supply provides system ventilation. The power supply has several cables
for attaching to the various devices requiring power.
POWER MANAGEMENT
The Advanced Power Management (APM) program, located on the 82371AB PCI ISA
IDE Xcelerator (PIIX4) chip, reduces system power consumption when there is no activity
detected from the keyboard, mouse, diskette drive, CD-ROM drive, or hard disk drive after
a predefined period of time. As soon as activity is detected, the system resumes where it left
off.
In the CMOS Setup utility, an inactivity timer is available for setting the length of time
before the sytem enter a low-power mode.
Section 2
Setup Utility
This section describes the Setup utility program that allows the system configuration
information to be viewed and changed.
NOTE:
the correct system parameters for the
configuration. Unless setting the time and date,
setting security features, customizing the system,
or adding optional hardware, Setup does not
need to be run.
CONFIGURATION INFORMATION
System configuration information is stored in nonvolatile memory. A nonvolatile memory
device retains its data when system power is turned off.
The system ships from the factory with
Nonvolatile memory is a complementary metal-oxide semiconductor (CMOS) chip backed
up by a battery on the system board. The battery supplies continuous power to CMOS
memory and maintains configuration information when system power is off.
WHEN TO USE SETUP
The Setup utility allows the user to view and set system parameters. Use the Setup utility
program:
to set the time and date.
to update or check system parameters when adding or removing expansion
options.
to change or set power management features.
to correct a hardware discrepancy when the Power-On Self-Test (POST) displays
an error message and a prompt to run Setup.
to check the installation of optional memory by comparing the amount of memory
installed with the amount of memory displayed by Setup.
to change certain system operating parameters, such as boot device sequence and
keyboard parameters.
to configure system connections for peripherals such as the diskette drive, hard
disks, and devices connected to the printer port and serial ports.
2-2 Setup Utility
to customize the system with security features such as passwords.
to set system parameters after replacing the CMOS battery.
HOW TO START SETUP
To start the Setup utility, follow these steps:
1.
Turn on or reboot the system.
2.
Press F2 after POST begins, but before the system boots up. You have about five
seconds to press F2.
Setup’s Main Menu window appears similar to the following screen.
NOTE
:
The screen shown is typical of a system.
The actual settings on the Main Menu depend
upon the hardware installed in the system.
Setup Utility 2-3
HOW TO USE SETUP
The Setup utility has a Main Menu window and five top-level menus with submenus.
The Main Menu window contains the following areas:
A title line the top line of the Main Menu. This line displays the Setup utility
name and copyright message.
The menu bar the line under the Setup title line. The menu bar contains five
top-level menus to set system parameters.
A Main Menu summary window the area on the left side of the screen. This
area provides a summary of Main Menu Setup parameters. Some Main Menu
parameters can be set from this window or they can be set from submenus.
The help and navigation window the area on the right side of the screen. This
area provides help information for the Setup option currently selected. The
navigation keys provide a summary of commands available for making selections.
The General Help window a window that appears any time during Setup after
pressing F1. This help window provides general information about using Setup.
The following subsections describe how to use the Main Menu window to set system
parameters.
Menu Bar
The menu bar at the top of the Main Menu window lists these menus:
Main Use the Main menu for basic system configuration. For example, select
“Main” to set the system time, system date, diskette drive, and hard drive
parameters. Use this menu to check memory parameters.
Advanced Use the Advanced menu to set serial port and printer port addresses
and interrupts, and to enable/disable the system’s IDE and diskette drive
interfaces.
The Advanced menu also provides submenu items for setting keyboard features,
video configurations, and DMI event logging.
Security Use this menu to set User and Supervisor Passwords and the
Unattended Start feature.
Power — Use the Power menu to set power management parameters.
Boot — Use this menu to set boot options.
Exit Exits the Setup utility with various save or discard options.
2-4 Setup Utility
A Maintenance Menu appears when the system is in configure mode. See Appendix C for
information on putting the system in configure mode. This menu allows you to change the
processor speed and to clear user and supervisor passwords.
To select an option from the menu bar, use the left and right arrow keys. See “Exiting
Setup” in this section for a description on exiting the Main Menu.
Legend Bar
Use the keys listed in the legend bar on the bottom of the Setup menu to make the
selections or exit the current menu. Table 2-1 describes the legend keys and their alternates.
Table 2-1 Setup Key Functions
Key Function
F1 Provides help for the parameter field being displayed.
Esc Exits the menu.
← or → arrow keys
↑ or ↓ arrow keys
Enter Executes a command or selects submenu.
Selects next menu.
Moves cursor up and down for item selection.
Selecting a Menu Item
To select a menu item, use the up/down arrow keys to move the cursor to the desired field.
Then press
Enter
. The Exit Saving Changes command in the Exit Menu saves the values
currently displayed in all the menus.
Displaying a Submenu
To display a submenu, use the up/down arrow keys to move the cursor to the desired
submenu. Then press
Enter
. A pointer (a right-pointing triangle) marks all selectable
submenus.
Getting Help
A Field Help window or Item Specific Help window on the right side of each menu displays
the help text for the currently selected Setup option. It updates as the cursor moves to each
new field.
Pressing F1 on any menu brings up the General Help window that describes the legend keys
and their functions.
Esc
Press
to exit the current window.
Setup Utility 2-5
MAIN MENU
This section describes the Main Menu parameters. Other menu parameters are available by
selecting submenus. Use the arrow keys to move the cursor to a parameter and press
to select a submenu. Items with lighter text are not available.
Processor Type
This field displays your computer’s processor type.
Processor Speed
This field displays your processor’s speed.
Cache RAM
This field displays the size of your system’s L2 (external) cache.
Enter
Total Memory
This field displays the total amount of memory installed on your system board.
BIOS Version
This field displays your system’s BIOS version number.
Language
This field displays the current default language used by the BIOS. Depending on
the system you purchased, you may choose a different display language from
among the options listed below.
English (US) (default)
Italiano
Français
Deutsche
Español
2-6 Setup Utility
System Time and Date
These two fields specify the correct time and date. To change them, press Tab to
highlight the field you want to change, then press the + or – keys to change the
setting.
Hard Disk Predelay
This option keeps BIOS from searching for a drive until the specified predelay
time has passed. This allows certain drives time to spin up before being detect by
the BIOS.
Floppy Options Submenu
This submenu can be used to configure your system’s floppy disk drives. To enter the
submenu, highlight the Floppy Options field, then press Enter. You’ll see the following
options:
Diskette A:/B:
These fields specify the capacity and physical size of Diskette Drive A and B (if
included). To change these, highlight the field for the drive, press Enter and
select from the following options:
Disabled
360KB, 5.25 inch
1.2MB, 5.25 inch
720KB, 3.5 inch
1.44/1.25 MB, 3.5 inch (default for Drive A)
2.88 MB, 3.5 inch.
If you add an optional 5.25-inch diskette drive to your system, select Floppy B
and change the parameter to 1.2 MB, 5.25 inch.
Floppy Write Protect
This option enables or disables write protection for the diskette drive(s). Choose
the desired setting to enable or disable (default) this option.
To return to the Main Menu, press Esc.
IDE Devices
The next four entries, Primary IDE Master and Slave, and Secondary IDE Master
and Slave refer to settings for IDE devices. These fields report the presence of,
and identification for as many as four physical IDE devices, two on each PCI/IDE
connector.
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