Copyright: ©1995 Digital Equipment Corporation
Citation: ©1995 Digital Equipment Corporation


Contents

Venturis Computer Desktop PC Service Information

The following Help Topics or groups of Help Topics are available:

General Information

About This Help System

Introduction

Slimline vs. Full-profile

Related Material

Glossary

Service Information

System Features

System Utilities

Security Features

BIOS Setup Utility

Troubleshooting

Service Procedures

Parts List

Technical Reference

System Specifications

Technical Specifications

Device Mapping

Interface Connectors

For Help on Help, Press F1


About This Help System

This topic is designed to help you understand the way this Help file has been organized and the graphic and stylistic conventions which have been used in presenting the material.

Organization

There are several "layers" of contents pages in this Help file, each grouping a related set of Help topics.  The topics are also selectively cross-referenced, so that you can jump quickly between Help topics grouped in different sections of the file.  Simply click on the highlighted words, phrases, and topic titles to move from topic to topic.

Enhanced Illustrations

Where parts of an illustration appear boxed by dotted lines, you can click on the boxed area to see further information about the item being illustrated.  Note that if you have significantly reduced the size of the Help window, some illustrations may not be completely visible and/or the scrollable area of the window may become too small to display text.  If this happens, simply increase the size of the Help window until all the information you need becomes visible or can be scrolled into view.

The illustrations in this Help system have been designed for high-resolution display.  You should set your monitor to the highest possible screen resolution in order to view the illustrations most clearly.

Note and Legend Buttons

Some Help topics contain special buttons which indicate the presence of additional information.  For example, the [image] button identifies a Legend describing features of the illustration it accompanies.  Clicking on the button will allow the Legend or Note to appear for you to study.

Color

Information of special importance has been indicated in this Help file by the use of colored text: blue for NOTE, red for CAUTION, and dark red for WARNING.  (If your system is equipped with a monochrome display, these colors will appear as BOLD text.)  You may find some of this colored text difficult to read if you have made changes in your Windows screen colors.  This problem can be solved by returning the color settings to one of the pre-defined Windows color sets while you are using the Help file.

Entire contents of this Help file copyright © 1995 Digital Equipment Corporation.


Slimline vs. Full-profile

This Help file contains information about Slimline and Full-profile Venturis computers.  (The terms "Slimline" and "Full-profile" refer to the height of your computer.  A Slimline computer is physically shorter than a Full-profile computer.)

For the most part, all Venturis computers have comparable features and capabilities.  The major difference between a Slimline Venturis computer and a Full-profile Venturis computer equipped with similar microprocessors is that the Full-profile version has more space for optional expansion boards and peripheral devices.  Refer to the System Specifications topics for specific details.

When there there are significant differences between the Full-profile and Slimline versions of the Venturis computer, this Help file provides full information about both versions.  When differences are not discussed, you should assume that information in this Help file applies to both versions even if an illustration depicts only one version.

NOTE
Note that the word "version", as it is used above, is not a synonym for the word "model".  A Venturis computer's model number might vary depending on a number of factors, including the microprocessor and/or system components installed at the factory.

See also:	System Specifications


Introduction

Venturis computers are high-performance personal computers featuring the latest in computing technology.  They can be used as stand-alone computers, as clients, or as servers in a network environment.  Developed using the following state-of-the-art technology, these computers are the most value packed Slimline and Full-Profile desktop computers in their class.

•	Microprocessor
Pentium CPU at 75 MHz, 90 MHz, 100 MHz, and 120 MHz upgrade

•	Onboard Video
S3 Trio 64 technology takes full advantage of the computer’s CPU and power management features. Video controller circuitry is incorporated into the main logic board; a separate video adapter is unnecessary

•	Plug and Play
Optional Plug and Play compatible expansion boards are automatically configured for easy installation

•	Advanced Power Management
Reduces the computer's energy consumption and operating costs

•	Onboard Cache
256 KB secondary cache provides faster access to current files than system RAM


Related Material

Venturis Quick Setup Guide	ER-920WW-IA
Venturis Quick Setup Guide	ER-920WW-IP	(French)
Venturis Quick Setup Guide	ER-920WW-IG	(German)
Venturis Quick Setup Guide	ER-920WW-II	(Italian)
Venturis Quick Setup Guide	ER-920WW-IJ	(Japanese)
Venturis Quick Setup Guide	ER-920WW-IS	(Spanish)

Venturis User's Guide	ER-920WW-UA
Venturis User's Guide	ER-920WW-UP	(French)
Venturis User's Guide	ER-920WW-UG	(German)
Venturis User's Guide	ER-920WW-UI	(Italian)
Venturis User's Guide	ER-920WW-UJ	(Japanese)
Venturis User's Guide	ER-920WW-US	(Spanish)

ISA Configuration Utility (ICU) User's Guide	ER-PNPAL-UA


System Features

Onboard Video

PCI Features

Plug and Play

Front Panel Controls and Indicators

Rear Panel Connectors


Onboard Video

Venturis computers offer high-performance, 64-bit video memory interfacing.  It allows for faster data transfers between supported CPUs and memory as well as high-speed screen refresh capabilities.  Major features include:

•	Graphical User Interface (GUI) Accelerator
A high-performance DRAM-based 64-bit GUI accelerator used to speed up graphical applications running under Windows, Lotus, AutoCad, etc

•	Local Bus Video Interface
A 64-bit PCI local bus provides a no-wait-state, read/write cycle operating up to 33 MHz to improve video performance.

•	Video Memory
1 MB video memory is standard; this can be increased to 2 MB.  More video memory allows higher monitor resolution and more colors from the palette, if supported by the monitor.

•	RAMDAC Support
The RAMDAC increases video speed and can display up to 24 bits per pixel (16.8 million) true colors.

•	Monitor Timing Modes
The latest 75 Hz monitor timing modes.

•	Display Power Management Signaling (DPMS) Support
Full Advanced Power Management support.

•	Feature Connector
A 26-pin feature connector.  This output-only connector can be used with multimedia options.

NOTE
Operation with a video card attached to the VGA feature connector is restricted to applications that do not write the palette.  For operation, you must enable the VGA feature connector at the BIOS Setup Menu.


PCI Features

The PCI architecture used in Venturis computers represents the latest in local bus technology.  It delivers maximum computer performance by providing a wider data path, greater speed, and improved expandability.  Simply put, PCI removes various types of peripheral controllers from the slower ISA and EISA buses and connects them directly to a faster 32-bit data path.  This results in a faster 32-bit I/O bus for devices such as SCSI controllers and high-end video adapters.

•	Highest performing bus on the market today

•	Offers the best expandability for high-performance peripheral devices

•	Supports multiple bus masters

•	32-bit data transfer at 132 MB per second (maximum)

•	PCI-to-ISA bridge circuitry allows continued use of existing ISA expansion boards on the market that do not require the high data transfer rate of PCI


Plug and Play

Plug and Play technology eliminates the process of manually configuring optional expansion boards for operation in the computer.  With Plug and Play, the computer's BIOS, operating system, and the hardware logic built into Plug and Play expansion boards work together to automatically assign interrupt requests (IRQs), I/O and memory addresses, and DMA channels for optimum performance.

Plug and Play also makes installing non-Plug and Play expansion boards (referred to as legacy boards) much easier.  However, users must use the ISA Configuration Utility (ICU) software supplied with the computer to correctly assign system resources when they install these legacy ISA cards.

Plug and Play software for MS-DOS and Windows comes factory-installed on computers that have a hard disk drive.

There is on-line help information in the ICU.  Users can access the ICU through the "Getting Started" program.


Slimline Venturis

A Slimline Venturis computer should resemble the illustration below.  To learn more about a particular component of your computer, click on its image in the illustration.


Full-profile Venturis

A Full-profile Venturis computer should resemble the illustration below.  To learn more about a particular component of your computer, click on its image in the illustration.


locking tabs

  These semi-circular locking tabs secure your computer's outer case.  If you need to remove the case for some reason, you must unlock the tabs.  To unlock the tabs, turn them outward so that you can grasp them, then rotate them forward.  Reverse this process when replacing the case on the computer.


"tower" base

The left side of the Full-profile Venturis computer has "feet" at each end as shown in the illustration.  This allows you to stand the computer on its left side next to your desk or work area, for use as a "tower" system.


Front Panel Controls and Indicators

To determine the purpose and function of a particular control or indicator on the front panel, click on the relevant portion of the illustration below.

NOTE
The illustration provided shows a Full-profile Venturis computer.  Differences between the Slimline and Full-profile versions of the Venturis computer are noted, where appropriate, in the individual pop-up descriptions accompanying the illustration.


Drive bay

This is a 5¼-inch drive bay in which an additional drive (for example, a CD-ROM drive or tape back-up drive) may be installed.  It can also be adapted to serve as a second 3½-inch drive bay.

NOTE
Slimline Venturis computers have only one drive bay.  Full-profile Venturis computers have two drive bays as shown.


3½-inch diskette drive

This is the factory-installed 3½-inch diskette drive.


diskette eject button

Pressing this button releases a 3½-inch diskette inserted in the diskette drive.


power on/off button

This button turns ac power on and off.


power light
power on/off LED

The power on/off LED is lit when the computer is on.


hard disk drive light

The hard disk drive light is lit when a hard disk drive is in use.


diskette access indicator

The diskette access indicator lights when the installed diskette drive is in use.


chassis lock

Locks the cover to prevent unauthorized access.


PCMCIA / IR bay

Installing optional hardware in this space enables you to use PCMCIA devices and/or infra-red (IR) wireless data transfer technology in your computer.  Contact your Digital sales representative for further information about these options.

NOTE
Slimline Venturis computers do not have this device bay and cannot use the optional hardware described above.


internal drive bay (front)

This is the location of a hidden internal drive bay.  Your computer´s hard disk drive is usually installed in this space.


Rear Panel Connectors and Voltage Select Switch
Rear Panel Connectors

To determine the purpose and function of a particular connector on the rear panel, click on the relevant portion of the illustration below.

NOTE
The illustration provided shows a Full-profile Venturis computer.  Differences between the Slimline and Full-profile versions of the Venturis computer are noted, where appropriate in the individual pop-up descriptions accompanying the illustration.


AC output connector

Allows you to connect a monitor to AC power.


AC line connector

Allows you to connect the computer to an AC power source.


mouse connector

Allows you to connect a PS/2 compatible mouse.


keyboard connector

Allows you to connect a 101-key or 102-key keyboard.


serial port connectors

These ports allow you to connect serial devices, such as an external modem.


onboard video connector

Provides the interface between the onboard video controller and an industry-standard VGA monitor.


parallel port connector

This port allows you to connect an industry standard parallel printer.


ISA expansion slot (full-length)
ISA expansion slots (full-length)

These slots allow you to install full-length ISA expansion boards.

NOTE
Full-profile Venturis computers have three ISA expansion slots as shown.  Slimline Venturis computers have one ISA expansion slot.


ISA/PCI expansion slot (shared)

This slot allows you to install either a full-length ISA expansion board or a full-length PCI expansion board.


PCI expansion slot (half-length)

This slot allows you to install a half-length PCI expansion board.


internal drive bay (rear)

This is the location of an internal drive bay.  You can install a second 1-inch high hard disk drive in this area.


BIOS Setup Utility

These Help topics provide information on how to configure the computer using the BIOS Setup utility.  If the computer was delivered with factory-installed software, it has already been configured.

Running the BIOS Setup Utility

Navigating in the BIOS Setup Utility

BIOS Setup Utility Options

Main Menu Options

Advanced Options

Security Options

Power Options


Running the BIOS Setup Utility

The BIOS Setup utility is used to specify operating settings and to permanently store information about the computer's hardware and software in the battery-backed memory of the CMOS RAM.  This information takes effect each time the computer boots and can be changed each time the Setup utility is run.

Use the BIOS Setup utility to resolve problems with the hard disk or to reconfigure the computer.  In addition, the BIOS Setup utility might need to be used to modify the configuration after adding or removing hardware, or when certain computer settings are changed.

To run the BIOS Setup utility, perform the following steps:

1.	Turn on the computer.

2.	Before POST completes, press [F2] to display the main menu.

3.	Follow the instructions on the monitor screen and any on-line help pop-up screens to configure the computer.


Navigating in the BIOS Setup Utility

Below are some helpful hints for navigating in the BIOS Setup utility.

Shortcut Keys
Several keyboard function keys and numeric keypad keys are programmed to automatically select menus and sub-menus, options, change option values, and display help information.  These keys are displayed at the bottom of the main menu and from the General Help pop-up screen.

Item-Specific Help
Item-specific help is available at any time during the setup process and appears at the right of the setup screen each time an option is highlighted.  This on-line help provides information about a highlighted option.

Navigating Between Menus
Press [Esc] to exit a sub-menu and return to the main menu.
Press [Esc] from the main menu to go to the exit menu.

Exit Menu Options

•	Select Save Changes & Exit to save all Setup values.

•	Select Discard Changes & Exit to exit Setup without recording any changes.

CAUTION
When you select this option, a warning appears advising you that you have not saved any changes to your Setup settings.  You are asked whether you want to save changes to your Setup settings.  Answer Yes (the default setting) to save changes; answer No to exit without saving changes.

•	Select Get Default Values to set all Setup options to their default values.

•	Select Load Previous Changes to restore all CMOS values from the last session.

•	Select Save Changes to save all selections without exiting Setup.


BIOS Setup Utility Options

The following Help topics list the BIOS options that can be updated or modified by using the BIOS Setup utility, according to the various sub-menus under which they appear.

NOTE
The Help topics for the BIOS Setup options have been organized by subject, according to the following list.  Note that options grouped into sub-menus in the Help file are not grouped by sub-menu in the BIOS Setup utility.  As a result, items in the Main Menu Options and Advanced Options areas of the BIOS Setup utility might appear in a different order than they appear in the following Help topics. Default values are indicated by blue characters.

•	Main Menu Options
sets basic computer configuration options (time, date, video, etc.)

Hard Disk Options

Memory and Cache

Boot Options

Keyboard Features

•	Advanced Options
sets advanced features to increase computer performance (COM ports, LPT port, etc.)

Integrated Peripherals

Advanced Chipset Control

•	Security Options
sets passwords and backup data reminders

NOTE
Once a supervisor password is set, a user might not be able to change some BIOS Setup utility options.

•	Power Options
sets power saving options to increase the life of your computer

•	Exit
provides options for saving changes and leaving BIOS Setup (refer to Navigating in the BIOS Setup Utility for additional information)


Main Menu Options

Hard Disk Options

Memory and Cache

Boot Options

Keyboard Features

Menu Fields	Settings	Comments
System time	Current time	Displays the current time.
System date	Current date	Displays the current date.
Language	English Español Français Deutsch Italiano	This setting cannot be changed in Setup.  Refer to the note for additional information.
Diskette drive A  Diskette drive B	1.44 MB, 3½ 2.88 MB, 3½ Not Installed 1.2 MB, 5¼ 720 KB, 3½	Sets the size and density of diskette drives.
Video system	EGA / VGA CGA 80x25 Monochrome	Sets the video controller type.
System memory	Not user selectable	Displays the amount of base (conventional) memory each time the computer boots.
Extended memory	Not user selectable	Displays the amount of extended memory each time the computer boots.


NOTE

This field only displays the current language of the BIOS.  This setting cannot be changed in Setup.  Instead, PHLASH** must be used to change the BIOS, where ** is the language extension.  Refer to Changing the Computer’s BIOS to Another Language  for information on changing a BIOS language.

The BIOS Setup utility supports only one language per computer.


Hard Disk Options

(IDE Adapter 0/1 Master/Slave)

Menu Fields	Settings	Comments
Autotype fixed disk		Press [Enter] to detect and fill in the installed hard disk drive parameters in the remaining fields.
Type	None to 39 User	Selecting 1 to 39 automatically fills in the remaining fields in this menu. Selecting User allows the remaining fields to be filled in manually, using the installed hard disk drive’s parameters.
Cylinders	0 to 4095	Displays the number of cylinders.
Heads	1 to 64	Displays the number of heads.
Sectors/track	0 to 63	Displays the number of sectors/track.
Write precomp	0 to 4095 None	Displays the number of cylinders that have their write timing changed.
Multi-sector transfers	2 sectors 4 sectors 8 sectors 16 sectors Auto Disabled	Determines the number of sectors per block for multiple sector transfers. Auto refers to the size the disk returns when queried.
LBA control mode	Disabled Enabled	Enables or disables the LBA hard disk drive addressing option. This option allows you to select Disabled for IDE hard disk drives up to 528 MB.  When using IDE drives greater than 528 MB and MS-DOS or MS-Windows as your operating system, select Enabled.  Select Disabled for all other operating systems
32 Bit I/O	Enabled Disabled	Enables or disables 32-Bit data transfer with the IDE HDD.  If enabled, Read Ahead Mode is enabled and cannot be changed by the user. This is recommended when using the PCI IDE connector.
Transfer Mode	Standard Fast PIO1 Fast PIO2 Fast PIO3	Selects the method to transfer data to and from the HDD.  If you select the user autotype for the HDD,  Setup automatically selects the optimum transfer mode is selected.
Read Ahead Mode	Enabled Disabled	When enabled, the read ahead buffer in the local bus IDE controller increases HDD performance.  Enabled is selected automatically if 32-Bit I/O is enabled.


Notes
NOTE

These fields are automatically filled in if the computer auto-detected an installed hard disk drive 49.  Incorrect settings can cause the computer to malfunction.


NOTE

These fields are automatically filled in if the computer auto-detected an installed hard disk drive 49.


Memory and Cache

Menu Fields	Settings	Comments
Internal cache	Enabled Disabled	Enables or disables the computer's internal cache.
External cache	Enabled  Disable	Your computer’s external cache operates in write-back mode if you select Enabled. For optimal computer performance, you should keep this setting at Enabled.
System BIOS shadow	Enabled (Not user selectable; permanently set)	The main logic board reserves an area of DRAM for a copy of system BIOS ROM.  This DRAM called "shadow memory" is write-protected and has the same addresses as the system BIOS ROM locations.  When system BIOS ROM is shadowed, the ROM information is copied into an appropriate area in DRAM.  This increases the computer's performance because the system BIOS instructions are in fast DRAM instead of ROM.
Cache system BIOS	Enabled Disabled	This option enables the system BIOS to be cached in the internal cache and external cache (if installed).  This increases computer performance because BIOS instructions can be executed in cache instead of RAM.
Video BIOS shadow	Enabled Disabled	The main logic board reserves an area of DRAM for a copy of video BIOS ROM.  This DRAM called "shadow memory" is write-protected and has the same addresses as the video BIOS ROM locations.  When video BIOS ROM is shadowed, the ROM information is copied into an appropriate area in DRAM.  This increases the computer's performance because the video BIOS instructions are in fast DRAM instead of ROM.
Cache video BIOS	Enabled Disabled	This option enables the video BIOS to be cached in the internal cache and external cache (if installed).  This increases computer performance because video BIOS instructions can be executed in cache instead of RAM.
Shadow 16K at:    C8000h   CC000h   D0000h   D4000h   D8000h   DC000h	Enabled Disabled	Enables or disables shadowing of individual segments of ROM to increase computer performance.
AT bus space	Disabled	Memory hole not available; upper memory is contiguous.
	F80000h, 0.5 MB	Sets the memory hole at address F80000 with 0.5 MB memory available.
	F00000h, 1 MB	Sets the memory hole at address F00000 with 1 MB memory available.
Extended memory report	Compatibility Non-  compatibility	Selects the BIOS report mechanism for memory amount. Select Compatibility when using a conventional operating system. Select Non-compatibility for extended memory above 64 MB under Windows NT  v3.1.


CAUTION

Some option ROMs do not operate properly when shadowed.


Boot Options

Menu Fields	Settings	Comments
Boot sequence	A: only A: then C: C: then A: C: only	Each time the computer boots, it will load the operating system from the sequence selected.
SETUP prompt	Enabled Disabled	Enables or disables the <F2> Setup prompt each time the computer boots. Selecting Disable only disables the prompt indicating when to press <F2> to enter Setup.  You can still enter Setup by pressing <F2> before POST completes.
POST errors	Enabled Disabled	Enabling this option causes the computer to pause and display a setup entry or resume the boot prompt if an error occurs at boot. Disabling this option causes the computer to always attempt to boot regardless of a setup entry or error.
Floppy check	Enabled Disabled	Enabling this option causes the computer to verify the diskette type each time the computer boots. Disabling this option speeds up the boot process.
Summary screen	Enabled Disabled	Enabling this option causes the computer to display configuration parameters (in the form of a summary screen) during boot.


Keyboard Features

Menu Fields	Settings	Comments
Numlock	Auto On Off	Turns Numlock on or off each time the computer boots.
Key click	Disabled Enabled	Enables or disables the audible key click feature.
Keyboard auto-repeat rate	2/sec 6/sec 10/sec 13.3/sec 18.5/sec 21.8/sec 26.7/sec 30/sec	Sets the number of times a second to repeat a keystroke while the key is held down.
Keyboard auto-repeat delay	1/4 sec 1/2 sec 3/4 sec 1 sec	Sets the delay time after a key is held down before it begins to repeat a keystroke.


NOTE

If Auto is selected, the computer will turn on Numlock if it detects a numeric keypad.


Advanced Options

Integrated Peripherals

Advanced Chipset Control

Menu Fields	Settings	Comments
Plug & Play O/S	Yes No	Select Yes if using a Plug & Play operating system such as Windows 95. Otherwise, select No.
Reset Configuration	Yes No	Select Yes to clear the system configuration data if you suspect it is corrupted, which sometimes occurs after a power outage.  This option also clears the Plug & Play databases. After you input correct settings (or accept the default settings), the computer switches this setting back to No. If you do not need to clear system configuration data, leave the setting at No.
Large disk access mode	DOS Other	Select DOS if you have MS-DOS installed. Select Other if you have another operating system installed. A large disk drive constitutes one that has more than 1024 cylinders, 16 heads, or 63 tracks per sector.


Integrated Peripherals

Menu Fields	Settings	Comments
Mouse port	Disabled Enabled	Enables or disables the mouse port.
Parallel port	Auto Disabled 3BC, IRQ 7 378, IRQ 7 278, IRQ 5	Enables or disables the onboard port at the specified address.
Parallel port mode		Sets the onboard parallel port mode.
	Compatible mode	Standard printer connection.
	Bi-directional mode	PS/2 compatible mode and able to receive data.
	ECP mode	Extended capabilities port mode.
	EPP 1.7 EPP 1.9	Enhanced parallel port mode. Selection based on what EPP version the printer supports. Only choose a mode that your parallel port device (such as a printer) supports.  Check the parallel port device documentation for this information.  If this information cannot be located, use the default setting.
Serial port 1	Auto Disabled 3F8, IRQ 4 2F8, IRQ 3 3E8, IRQ4 2E8, IRQ3	Enables or disables onboard serial port 1 at the specified address. Select Auto unless interrupts IRQ4 and/or IRQ3 are allocated as a computer resource. Two devices cannot share the same IRQ.  Choosing Disable makes serial port 1 unusable.  If you select Auto, Setup configures COM1 to address = 3F8h and IRQ = 4.
Serial port 2	Auto Disabled 3F8, IRQ 4 2F8, IRQ 3 3E8, IRQ4 2E8, IRQ3	Enables or disables onboard serial port 2 at the specified address. Select Auto unless interrupts IRQ4 and/or IRQ3 are allocated as a computer resource. Two devices cannot share the same IRQ.  Choosing Disable makes serial port 2 unusable.  If you select Auto, Setup configures COM2 to address = 2F8h and IRQ = 3.
Diskette controller	Enabled Disabled	Enables or disables the onboard diskette controller.
Exchange diskette drives	Disabled Enabled	Logically exchanges physical diskette drive designations.
Diskette write protection	Disabled Enabled	Enables or disables the selected diskette drive’s write protect option.
IDE adapter 0 IDE adapter 1	Enabled Disabled	Enables or disables the onboard IDE controller.


NOTE

Two devices cannot share the same IRQ.  Also, choosing Disabled makes the parallel port unusable.


Advanced Chipset Control

	CAUTION The following advanced chipset control options should normally stay at their default values. Change them only if necessary to correct specific operating problems or errors.
Menu Fields	Settings	Comments
PCI Slot 1 Latency Timer	Default(40h) 08h - F8h	Select Default or a value from 08h to F8h to set the PCI device’s latency timer.  Default uses the PCI device’s power on setting
PCI Slot 2 Latency Timer	Default(40h) 08h - F8h	Select Default or a value from 08h to F8h to set the PCI device’s latency timer.  Default uses the PCI device’s power on setting
VGA palette snoop	Enabled Disabled Default	This option controls how VGA devices handle accesses to their palette areas.  Enabling this option causes special palette behavior (a device must not respond to normal accesses).  Disabling this option causes a device to treat palette accesses like any other device access. Enable VGA Palette Snoop when a second video adapter is connected to the feature connector of the installed VGA adapter for multi-media devices.
Monitor	Auto Color Monochrome	Sets your monitor type.  Auto automatically detects the monitor type.  If Auto fails to correctly detect the monitor type, select Color or Monochrome as appropriate.
VGA Feature connector	Enabled	Use with VGA add-in cards to inform card not to claim VGA palette writes.
	Disabled	Use to inform VGA add-in cards to claim VGA palette writes.
Onboard VGA IRQ	Enabled Disabled	Select Enabled if your application requires VGA IRQ


Security Options

Menu Fields	Settings	Comments
Supervisor password is	Not user selectable (Disabled)	Indicates whether or not the supervisor's password is enabled or disabled.
User password is	Not user selectable (Disabled)	Indicates whether or not the user's password is enabled or disabled.
Set supervisor password	Press [Enter]	Allows a supervisor password to be set. The supervisor password must be set if a user password is to be used. When the supervisor later enters his or her password, all user selectable features are accessible.
Set user password	Press [Enter]	Allows a user password to be set. This password can be set only if a supervisor password is entered. When the user has entered his or her name but the supervisor is not logged in, only the following information is accessible: Supervisor password is Enabled. User password is Enabled. Set user password [press enter] to enter a user password. Password on boot Enabled/Disabled (which ever    is  in effect).  This option is not allowed to change. Custom sign on banner Enabled/Disabled (which ever is in effect).  This option is not allowed to change.
Password on boot	Enabled Disabled	Enables or disables the enter password on boot option.
Custom sign on banner is	Not user selectable (Disabled)	Indicates whether the custom sign on banner is enabled or disabled.
Custom sign on banner	Press [Enter]	Press [Enter] to enter a custom sign on banner that displays during POST. For example, the user might enter “Welcome to John’s machine.”  The maximum number of characters is 50.
Diskette access	Supervisor User	Controls who has access to diskette drives. If Supervisor  is selected, access to the diskette drive is limited to the supervisor, who must enter his or her password.  If User is selected, the diskette drive can be accessed by entering either the supervisor or the user password. Whatever setting is chosen, it only becomes functional if both a Supervisor Password and a User Password have been set (if you choose User for the setting).
Fixed disk boot sector	Normal Write protect	Write protects the boot sector on your hard disk drive.
Network server	Enabled Disabled	This option keeps the computer from being accessed during network operation.
System backup reminder	Disabled Daily Weekly Monthly	Enables or disables the system backup reminder message.
Virus check reminder	Disabled Daily Weekly Monthly	Enables or disables the virus check reminder message.
Keyboard quick lock	Enabled Disabled	Select Enabled to "quick lock" your keyboard.  Select Disabled to disable this feature.


NOTE

Entering Setup with a supervisor password provides full access to all BIOS Setup utility menus.


NOTE

Entering Setup with a user password restricts access to certain BIOS Setup utility menus. To delete or disable the User password, press [Enter] for this field.  When prompted for the User password, leave the field blank and press [Enter].

Also, this option requires prior setting of the supervisor password.


NOTE

This option requires prior setting of the supervisor/user password.


Power Options

NOTE
To use any of the Power management features, the POWER.EXE driver must be loaded from your CONFIG.SYS file when you boot your computer.  This is done automatically if your computer has factory-installed software.  Otherwise, you must include the “DEVICE=C:\DOS\POWER.EXE” statement to your CONFIG.SYS file.

Menu Fields	Settings	Comments
Power management	Enabled Disabled	Enable this field to use any of the power management options.  If this field is enabled and the other fields are disabled, only minimal power reduction is affected.
System standby timer	Disabled   1 min.   5 min.  10 min.  20 min.  30 min.	After a set period of computer inactivity, the BIOS places the computer in a standby state (medium power savings), that is, the monitor and CPU are set to power management.  Any mouse or keyboard activity quickly returns the computer to operation. Alternately, you can choose to disable this option and thereby not use this feature. Power management must be enabled to use this option.
System suspend timer	Disabled    1 hour  1.5 hour    2 hour    3 hour    6 hour   12 hour	After a set period of computer inactivity, the BIOS places the computer in a suspended state (maximum power savings), that is, the monitor and fan are shut off and the CPU and hard disk are powered down. Any mouse or keyboard activity quickly returns the computer to operation. If you set a timer for the field, you should also set Power Management to Enabled. Alternately, you can choose to disable this option and thereby not use this feature. Power management must be enabled to use this option.
Suspend lock system	Yes No	When enabled, system suspend locks both mouse and keyboard until the user password is entered. If there is only a Supervisor password set, enter that password. See “Set supervisor password” and “Set user password” in the Security Options table. Power management must be enabled to use this option.
Quick suspend	Disabled [Ctrl-Alt-Esc] [Ctrl-Alt-Scroll Lock] [Ctrl-Alt-F1 — F10] [Ctrl-Alt-1 — 0]	Enabling this option allows you to put your computer in immediate suspend (maximum power savings) by pressing the key sequence selected in Setup.  You do not have to wait for the System Suspend timer to put your computer in a maximum power saving state.


System Utilities

Venturis computers come with several utility programs and device drivers that are factory installed as image files on the computers hard disk drive. For those computers that come without Factory Installed Software, the utilities are supplied on diskettes.

Users who are unfamiliar with utility programs and their uses should carefully read and understand these Help topics before attempting to use any of the utilities.  Also, make sure the computer is operating as expected.

The following system utilities and device drivers are available for the Venturis computer:

BIOS Utilities and Drivers

Multilingual BIOS Diskette (PHLASH.EXE)

Creating a Crisis Recovery Diskette

Using a Crisis Recovery Diskette

Upgrading The Computer's BIOS

Changing the Computers BIOS to Another Language

Video Utilities and Drivers

Setting High Resolution Video Modes

Using Windows 3.x Video Drivers

Using DOS Video Drivers

SMODE.EXE

SMTR.EXE

Additional Utilities and Drivers

EPP3NS.EXE

Plug and Play for MS-DOS and Windows

Diagnostics

Logitech Mouse Drivers


Multilingual BIOS Diskette (PHLASH .EXE)

The following files are supplied on the Multilingual BIOS Diskette:

•	PHLASH.EXE and associated runtime files.

•	Binary multilingual BIOS images

•	PHLASH**.BAT files, where ** represents the multilingual BIOS.  Run this file to upgrade the computers BIOS to the desired language.

Venturis computers are equipped with flash memory.  This means that users can restore the computer's BIOS simply by running the PHLASH.EXE utility.  Users can also upgrade the computer's BIOS to future releases by running PHLASH.EXE along with any flash BIOS update diskette if necessary.

Before Using PHLASH.EXE

A crisis recovery diskette should be created before PHLASH.EXE is used to upgrade the computers BIOS. This diskette can then be used to reprogram the computers BIOS in case the flash process built into the computer fails.  The following are needed to create this diskette:

•	A blank 3½-inch 1.44 MB formatted diskette

•	A diskette copy of the multilingual BIOS upgrade diskette

See also:	Creating a Crisis Recovery Diskette


Creating a Crisis Recovery Diskette

1.	Turn on the computer and allow the POST to complete.

If POST detects an error, refer to Troubleshooting  to identify and determine how to correct the problem.  After the problem has been resolved, restart the computer.

2.	Insert the multilingual BIOS diskette into the diskette drive and enter:

a:
dir

The entry should show that the following files are on the diskette.

MINIDOS.SYS
PHLASH.EXE
MAKEBOOT.EXE
MAKECRD.EXE

Note that there are some additional files as well.  Refer to the README file on the diskette for additional information.

3.	Create an upgrade directory on the hard disk drive.  For example, if the hard disk drive is c:>, enter at the DOS prompt:

c:
md upgrade

4.	Copy the files from the multilingual BIOS diskette into the upgrade directory on the hard disk drive.  For example, from the DOS prompt enter:

copy a:\upgrade\*.* c:\upgrade\*.*

5.	Insert a blank formatted diskette into drive A.

6.	On drive A, make a directory for the files previously copied.  For example, from the DOS prompt enter:

a:
md ugrade

7.	Return to the hard disk drive and copy the files.  From the DOS prompt that is:

c:
makecrd

The makecrd command prompts you for a recovery diskette to be placed in drive A and then automatically copies the files to drive A.

8.	Remove the crisis recovery diskette from drive A and store it in a safe place.


Using a Crisis Recovery Diskette

The crisis recovery diskette must be used only if the computers BIOS fails or if a BIOS upgrade was unsuccessful.  If the computers BIOS failed to flash properly or is corrupted in some way, the following sequence of events occurs:

•	POST detects an error after a normal boot cycle or a BIOS upgrade.
This message(s) appears on the monitor screen, indicating that the computers BIOS did not flash properly or has failed.

•	The BIOS in the bootblock memory automatically executes.
The computer attempts to find the correct BIOS files to execute the correct boot cycle.

•	The computer beeps several times.
This means the computer cannot properly boot using the BIOS files that were just copied during the flash update.

•	The computer accesses the diskette drive
The computer is searching for the crisis recovery diskette to restore the BIOS to its previous known state.

Restore the computers BIOS to its previous known state by performing the following procedures:

1.	Turn off the computer, unlock and remove the left-side cover, and set the recovery jumper (J10) to enabled.  Also, make sure that J35 is enabled.

Jumper J10 controls whether the computer is in recovery (Enabled) or normal (Disabled) operation.

2.	Replace the left-side cover, insert the crisis recovery diskette into drive A, and then power on the computer.

The computer automatically boots from drive A and upgrades the BIOS.  Upon completion, the computer sounds a beep code and attempts to restart.

3.	After the BIOS is restarted, turn off power to the computer and remove the crisis recovery diskette from drive A.

4.	Remove the left-side cover and set the recovery jumper (J10) to disabled.

5.	Replace and lock the left-side cover and turn the power back on for normal operation.


Upgrading Your Computer's BIOS
Upgrading the Computer's BIOS

Perform the following steps to update the computer's BIOS in the flash memory to a new updated one.

1.	Locate or create a crisis recovery diskette.  (Do not use a crisis recovery diskette created on any other computer.)

Refer to Creating a Crisis Recovery Diskette.

2.	Insert the multilingual BIOS diskette in the diskette drive.

3.	Turn on the computer and allow the POST to complete.

The computer now boots from the multilingual BIOS diskette.

If POST detects an error, refer to Troubleshooting  to identify and determine how to correct the problem.  After the problem has been resolved, restart the computer.

4.	At the MS-DOS prompt, type:

a:\upgrade\phlash

A screen appears on the monitor warning that the computers BIOS is about to be erased.

5.	Press [Enter] to continue.  Press [Esc] to cancel.

If [Enter] is pressed, PHLASH.EXE automatically updates the computers BIOS.

After the flashing process completes, the computer automatically reboots itself so changes immediately take effect.

6.	If a message appears indicating that the boot block is write-enabled, configure the boot block jumper. If not, go to step 7.

7.	Remove the multilingual BIOS diskette.


Configuring the Boot Block Jumper

Perform the following steps to configure the boot block jumper (J32).

CAUTION
Read this procedure carefully and be sure you understand it before completing the steps listed below.

1.	Turn off power to the computer.

2.	Disconnect external devices and power.

3.	Unlock and remove the cover.

4.	Open the drive bay subassembly.

5.	Change the jumper setting of J32 from position 3-2 to position 2-1.

6.	Close the drive bay subassembly.

7.	Replace and lock the cover.

8.	Reconnect external devices and restore power.

9.	Repeat steps 2-5 of the BIOS upgrade procedure.

10.	Repeat steps 1-4 of this procedure.

11.	Restore the jumper setting of J32 to position 3-2.

12.	Repeat steps 6-8 of this procedure.  The BIOS should now be successfully upgraded.


Changing the Computers BIOS to Another Language

Perform the following steps to change the computer's BIOS to a new language:

1.	Turn on the computer and allow POST to complete.

If POST detects an error, refer to Troubleshooting  to identify and determine how to correct the problem.  After the problem has been resolved, restart the computer.

2.	Insert the multilingual BIOS diskette into drive A.

3.	At the DOS prompt, type:

a:\phlash**

where ** represents the appropriate BIOS language as follows:

SP  Spanish
GR  German
FR  French
IT  Italian
EN  English

For example, to switch to a Spanish BIOS enter:

a:\phlashSP

A screen appears on the monitor warning that the computers BIOS is about to be erased.

4.	Press [Enter] to continue. Press [Esc] to cancel.

If [Enter] is pressed, PHLASH.EXE automatically updates the computers BIOS.

After the flashing process completes, the computer automatically reboots itself so changes immediately take effect.

5.	Remove the multilingual BIOS diskette.


Setting High Resolution Video Modes

To use the high resolution video modes supported by Venturis computers, perform the following steps:

1.	Use the BIOS Setup utility to correctly set the Video System option.

2.	Use SMTR.EXE to correctly set a monitor type.

3.	Use Windows Setup to copy the appropriate video driver into Windows.

CAUTION
Do not connect a low resolution monitor to a system that has been configured with high-resolution video drivers.  High resolution drivers can damage a 640 × 480 monitor.


Using Windows 3.x Video Drivers

These files contain the available S3 Trio 64 video drivers for Windows 3.x.  Depending on how a specific computer is configured and what software applications are installed, in might be necessary to install one or more of these drivers to optimize the computer's capabilities.

Before installing a video device driver, read and understand the information in any associated README file.

To install a Windows 3.x video driver, perform the following:

1.	Type CD WINDOWS at the C:\> prompt, then press [Enter]

The following prompt appears:  C:\WINDOWS>.

2.	Type SETUP and press [Enter].

Your computer displays the SETUP screen.

3.	Select the Display option and press [Enter].

4.	Toggle through the Display option to select the appropriate Windows 3.x driver.

5.	Select the desired video resolution then press [Enter].

6.	If the appropriate video driver resides on a separate diskette, toggle through the Display option to select Other (Requires disk provided by hardware manufacturer).

Insert the diskette that contains the appropriate video driver and press [Enter].

Select the desired video resolution then press [Enter].

NOTE
The resolution and refresh rate must be the same as the selection made using the SMTR.EXE utility.

Example:

If you select 1024x768@70Hz/NI using the SMTR.EXE utility, an appropriate selection is: S3 Trio 64 V1.1 1024x768 256 Colors Large Fonts.

The video setup screen appears again with the S3 driver.

Press [Enter] to accept the configuration.

7.	The MS-DOS prompt appears when SETUP completes.

Type WIN and press [Enter] to start Microsoft Windows.


Using DOS Video Drivers

These files contain installation instructions and, where applicable, the usage and performance tips for various DOS and CAD applications.

Installing DOS or CAD application video drivers  differs with each software application.  Special instructions are located in the README.TXT file and in the appropriate DOS or CAD application directories and files.


SMODE.EXE

The SMODE utility allows your main logic board's video circuitry to emulate and display non-standard VGA modes.  With SMODE, you can run software applications written for the following non-VGA modes:

•	Monochrome adapter (MDA)

•	Color graphics adapter (CGA)

•	Expanded graphics adapter (EGA)

•	Hercules monochrome graphics adapter (HGC)

The following procedure describes how to access SMODE.

1.	Turn on or reboot the computer and allow POST to complete.

2.	Insert the VGA Utilities and DOS Video Drivers diskette into drive A, type A:, and then press [Enter].

3.	Type CD\UTILS and press [Enter].

If you want to...	Type SMODE followed by...	Example
Display a non-standard VGA mode	<hex mode #> VGA	SMODE 55 VGA
Emulate a non-VGA  mode	Either EGA, CGA, MDA, or Hercules	SMODE MDA
VGA modes and corresponding hexadecimal numbers are listed in the release notes supplied with the computer.

 4.	Exit the SMODE.EXE utility following the instructions on your monitor screen.


SMTR.EXE

Your video controller's monitor type selection must match your monitor's available resolution and refresh rates.  These monitor resolution and refresh rates are listed in your monitor's support documentation and in the SMTR.EXE utility.

CAUTION
Do not select a monitor type setting that exceeds your monitor's resolution, refresh rate (vertical synchronization), and interlace or non-interlace specifications.  Refer to your monitor's support documentation for performance specifications.

To select the correct monitor type:

1.	Turn on or reboot your computer and allow POST to complete.

2.	Insert the VGA Utilities and DOS Video Drivers diskette into drive A.

3.	Type A: then press [Enter].

4.	Type CD\UTILS and press [Enter].

5.	Type SMTR and press [Enter].

6.	Select the correct monitor type following the instructions on your monitor screen.

For example:

If you want to run your monitor at a resolution of 1024 × 768, select 1024x768@70Hz/NI.

7.	Set the desired resolution.

8.	Exit the SMTR.EXE utility following the instructions on your monitor screen.


 EPP3NS.EXE

EPP3NS.EXE is a device driver for configuring the parallel port as an enhanced parallel port (EPP).  Before loading this device driver, check the documentation for the device you want to connect to the parallel port and make sure it supports EPP mode.  If it does not, you do not need to load this device driver.  If the device does support EPP mode, users should:

1.	Either copy EPP3NS.EXE to the hard disk drive or locate it on the hard disk drives factory installed software.

Note the path where the driver is located.

2.	Edit the CONFIG.SYS file to enter the path for EPP3NS.EXE.

Refer to the DOS documentation for information on editing the CONFIG.SYS file.  For example a line in the CONFIG.SYS might be:

device=C:\epp3ns.exe

3.	Save the new version of the CONFIG.SYS file.

4.	Press [Ctrl] + [Alt] + [Del] to reboot the computer.

5.	Before POST completes, press [F2] to enter Setup.

6.	Choose the Advanced Options Menu in Setup and select Parallel Port Mode.

7.	Choose EPP mode.

8.	Select Save Changes and Exit to save the new setting.

The computer automatically reboots.

The parallel port is now configured as an EPP port.


Diagnostics

Users create this diskette when they copy all the necessary files using Create Backup Diskettes in the Getting Started menu.

To use the diagnostics:

1.	Power on the computer with the Diagnostics diskette in the floppy disk drive.

A README file of instructions displays on the monitor.

2.	Read the README file and then press Esc to start the Diagnostics.


Logitech Mouse Drivers

These drivers enable the computer to operate using a Logitech mouse.


Security Features

Computer security is important to prevent theft or accidental loss of computer software and hardware.  The Venturis computer provides the following levels of protection:

Chassis Key Lock

Diskette Write Protection

Reminder Messages

Supervisor and User Password


Chassis Key Lock

The computer's chassis key lock is located at the front of the computer.   When locked, it prevents others from opening and removing the computer's cover.

Make sure you remove the key and store it in a safe place.


Diskette Write Protection

To prevent information on the computer´s hard disk drive from being copied to a diskette drive, the BIOS Setup utility can be used to set the diskette drive to a write-protected state.  In this state, the computer will read information from diskettes inserted into diskette drive(s), but no information can be copied from the computer´s memory or hard disk drive onto diskettes.

	CAUTION Consider security needs carefully before using this option. While this option is enabled, the contents of the hard disk drive cannot be backed up to diskettes, the Create Backup (Installation) Disks  utility in Getting Started cannot be used, and the computer cannot be booted from a diskette drive.
Perform the following steps to enable diskette drive write protection:

1.	Reboot the computer.

2.	After the POST has successfully completed, press [F2] to access Setup.

The Setup main menu appears on the screen.

3.	Highlight the Advanced Options menu and then press [Enter].

4.	Highlight the Diskette Write Protect field and select Enabled.

5.	Press [Esc] twice then [Enter] twice to exit the BIOS Setup utility and to reboot the computer so changes immediately take effect.

Your computer´s installed diskette drive(s) have been set to the write-protected state.

To disable diskette drive write-protection, follow the above procedure, selecting Disabled instead of Enabled in step 4.


Reminder Messages

The Venturis computer can be configured to periodically remind users to back up the hard disk drive and/or check for the presence of computer viruses in the system.

Note that the computer does not automatically back up software or check for viruses as a result of enabling these options.  These tasks must be performed using appropriate software.

Refer to MS-DOS/Windows documentation for information on the backup and virus software incorporated into MS-DOS and Windows.

To configure the reminder message options:

1.	Reboot the computer.

2.	Before POST completes, press [F2] to access Setup.

The Setup main menu appears on the screen.

3.	Highlight the Security menu and then press [Enter].

4.	Highlight the System Backup Reminder field.

5.	Select either the Disabled option or a reminder frequency setting (Daily, Weekly, or Monthly) and then press [Enter].

4.	Highlight the Virus Check Reminder field.

5.	Select either the Disabled option or a reminder frequency setting (Daily, Weekly, or Monthly) and then press [Enter].

6.	Press [Esc] twice then [Enter] twice to exit the BIOS Setup utility and to reboot the computer so changes immediately take effect.

Your computer runs POST, and prompts you for a supervisor or user password if you have set one.


Supervisor and User Password

Venturis computers have two password levels that can be set to prevent unauthorized access to computer files or to the BIOS Setup utility.  If a supervisor and/or user password is set, the computer will ask that a password be entered prior to accessing the BIOS Setup utility.  If "Password On Boot" is enabled, a password must be entered before the operating system boots.

A supervisor password is required to set a user password.  If the supervisor password is later deleted, the user password is also removed.

Perform the following steps to set a supervisor and user password:

1.	Reboot the computer.

2.	After the POST has successfully completed, press [F2] to access Setup.

The Setup main menu appears on the screen.

3.	Highlight the Security menu and then press [Enter].

4.	Highlight the Set Supervisor Password field and then press [Enter].

5.	Type in a supervisor password and then press [Enter].

To confirm, type in the supervisor password a second time and then press [Enter].

6.	If desired, set a user password.

Highlight the Set User Password field and then follow the method described in steps 4 and 5.

7.	Highlight the Password On Boot field and select Enabled if desired.

8.	Highlight the Diskette Access field.

9.	Select either the Supervisor or User option and then press [Enter].

10.	Press [Esc] twice then [Enter] twice to exit the BIOS Setup utility and to reboot the computer so changes immediately take affect.

The computer runs the POST and then asks for the password which has just been set.


Troubleshooting

These topics provide initial troubleshooting procedures and tables listing specific problems, probable causes, and recommended actions to take if your computer fails after you configure it or after you install optional hardware or software.

Refer to the documentation supplied with additional options if you are experiencing problems with specific options that you have installed.

Problem Solving and Troubleshooting

Initial Troubleshooting

Computer Troubleshooting

Disk Drive Troubleshooting

Monitor Troubleshooting

Messages

POST and Boot Messages

POST and Boot Error Messages

POST and Boot Informational Messages

Beep Codes


Initial Troubleshooting

Follow these general procedures to troubleshoot your Venturis Computer.

•	Press [Ctrl] + [Alt] + [Del].  If your computer fails to boot, turn it off, wait until all hard disk drives completely spin down, and then turn it back on.

•	If the POST detects an error, refer to POST and Boot Messages and take the appropriate steps to correct the problem.  After the problem has been resolved, restart the computer.

•	If there are POST error(s), run the BIOS Setup utility and fix the problem(s) identified by the POST error(s).

•	Make sure all necessary changes have been made to the CONFIG.SYS and AUTOEXEC.BAT files.  For example, if you installed a device driver, make sure you added the associated device statement to your CONFIG.SYS file.  Refer to your DOS documentation for information on editing a CONFIG.SYS file.

•	Make sure all necessary video, printer, and application device drivers are properly installed.

•	Ensure that all cables and connections are secure.

•	Run the diagnostic software.

See also:	BIOS Setup Utility


Computer Troubleshooting

To determine the possible causes of and appropriate remedies for a given problem, click on the check-mark next to that item in the list below.  Possible causes of a given problem are listed in bold italic text; a suggested remedy appears below each listed cause in normal text.

 	No response when the computer is turned on.

 	Power is on, but there is no screen display.

 	Computer operates incorrectly after installing optional expansion board.

 	Computer operates incorrectly after installing optional system memory (SIMMs).

 	Computer fails to retain setup information.

 	Computer does not boot from an IDE hard disk drive.

 	Computer does not recognize an internal or external SCSI device.

 	Computer does not boot from an internal SCSI hard disk drive.

 	Computer does not boot from a target diskette drive.

 	No response to keyboard commands.

 	No response to mouse commands.


No response when the computer is turned on.

•	Computer is not plugged in.

Turn off the computer, plug it in, and then turn it back on again.

•	No power at the wall outlet.

Use another wall outlet.

•	Main logic board failure.

Replace main logic board.

•	Main logic board jumpers incorrectly set.

Set all appropriate jumpers.

•	Power supply failed.

Replace power supply.


Power is on, but there is no screen display.

•	Brightness and contrast controls are not correctly set.

Adjust the brightness and contrast controls.

•	Monitor is off.

Turn on the monitor.

•	The monitor-off timer has shut off the monitor.

Press [Shift] to reactivate the monitor.

•	Monitor cable is incorrectly installed.

Check all monitor connections.

•	Incorrect VGA drivers installed.

Install the correct VGA drivers.

•	Onboard video controller failed.

Replace main logic board.

•	Monitor failed.

Replace monitor.


Computer operates incorrectly after installing optional expansion board.

•	Expansion board installed incorrectly.

Remove expansion board and reinstall.

•	Did not run ICU to configure expansion board after installation.

Run the ICU to properly configure expansion board. See the appropriate ICU documentation.

•	Expansion board failure.

Remove expansion board and reboot.  If computer boots without errors, replace expansion board.


Computer operates incorrectly after installing optional system memory (SIMMs).

•	Did not rerun BIOS Setup utility.

Run BIOS Setup utility.

•	BIOS Setup utility changes not saved before exiting.

Run BIOS Setup utility and save changes.

•	SIMMs installed incorrectly.

Remove SIMMs and reinstall.

•	SIMMs have failed.

Remove SIMMs and reinstall.

Make sure banks 0 and 1 are filled with the correct SIMM size, speed, and type (refer to Installing Additional Computer Memory).

Replace SIMMs.


Computer fails to retain setup information.

•	Computer battery has failed.

Replace computer battery (RTC).

•	CMOS clear jumper (J16) enabled.

Disable CMOS clear jumper (J16).


Computer does not boot from an IDE hard disk drive.

•	IDE drive type incorrect.

Run the BIOS Setup utility to identify the correct drive type.

See drive type label on drive or consult drive documentation.

•	Loose cables.

Secure all cable connections.

•	Onboard IDE interface disabled.

Run the BIOS Setup utility and set the IDE Hard Disk Drives option to "Enabled."

•	Hard disk boot sector is missing.

For DOS, boot from a DOS diskette then enter the following commands:

c:
cd\dos
fdisk/mbr

•	There might be a boot sector virus.

Run anti-virus software.

•	IDE hard disk is connected to the wrong IDE connector.

Connect the boot disk to the inner IDE connector on the main logic board.

•	Operating system software is not installed on the IDE hard disk drive.

Install the appropriate operating system.

•	IDE hard disk drive is not correctly formatted or the requested partition does not exist.

Format the IDE hard disk drive or partition the IDE hard disk drive using the supplied operating system software.

•	There is no software on the requested partition.

Install software on the requested partition.

•	IDE hard disk drive jumpers incorrectly set.

Refer to the supplied IDE hard disk drive kit installation instructions.


Computer does not recognize an internal or external SCSI device.

•	SCSI device jumpers incorrectly set.

Refer to the supplied SCSI device kit installation instructions.

•	SCSI ID conflicts.

Refer to the supplied SCSI device kit installation in
structions on setting SCSI Ids.

•	Terminating resistors not removed from the SCSI device.

Remove terminating resistors. Refer to the supplied kit installation instructions.

•	SCSI cable not terminated.

Terminate each end of the SCSI cable.

•	SCSI device not plugged in.

Check power and SCSI cables.

•	Hard disk boot sector is missing.

For DOS, boot from a DOS diskette then enter the following commands:

c:
cd\dos
fdisk/mbr

•	There might be a boot sector virus.

Run anti-virus software.

•	Loose SCSI cable.

Secure all cable connections.


Computer does not boot from an internal SCSI hard disk drive.

•	Computer not configured for SCSI hard disk drive operation.

Run the BIOS Setup utility and set the IDE controller option to "Disabled."  This disables the onboard IDE interface.

NOTE
If you have both IDE and SCSI hard disk drives installed, your computer uses the IDE hard disk drive as the boot device.

•	Operating system software is not installed on the SCSI hard disk drive.

Install the appropriate operating system.

•	Requested partition does not exist.

Partition the SCSI hard disk drive and then reload the operating software. Run fdisk following the instructions in your DOS documentation.


Computer does not boot from a target diskette drive.

•	Onboard diskette controller disabled.

Run the BIOS Setup utility and set the diskette controller option to Enabled.

•	Diskette drive not enabled.

Run the BIOS Setup utility to enable the diskette drive.

•	Incorrect diskette drive type.

Make sure the drive ID is correctly set (refer to the documentation supplied with your diskette drive).

•	Diskette boot option disabled.

Run the BIOS Setup utility and set Boot From Diskette A to "Enabled."

•	Diskette might not be bootable.

Use a bootable diskette.

•	Diskette does not contain start-up files.

Insert a diskette with the correct start-up files.

•	Diskette drive is empty.

Insert a diskette that contains an operating system.

•	Diskette is worn or damaged.

Try another diskette.

•	Loose cables.

Secure all cable connections.


No response to keyboard commands.

•	Keyboard is password protected.

Enter the keyboard password.

•	Keyboard is not connected.

Power down the computer and connect the keyboard.

•	Keyboard is connected to the mouse port.

Power down the computer and connect the keyboard to the keyboard port.

•	Computer operation halted.

Reboot computer.


No response to mouse commands.

•	Mouse is password protected.

Enter the keyboard and mouse password.

•	Mouse is not connected.

Power down the computer and connect the mouse.

•	Mouse is connected to the keyboard port.

Power down the computer and connect the mouse to the mouse port.

•	Mouse driver not installed.

Install the appropriate mouse driver.  Refer to your supplied application software documentation.

•	Computer operation halted.

Reboot computer.


Disk Drive Troubleshooting

To determine the possible causes of and appropriate remedies for a given problem, click on the check-mark next to that item in the list below.  Possible causes of a given problem are listed in bold italic text; a suggested remedy appears below each listed cause in normal text.

 	IDE/SCSI hard disk drive cannot read or write information.

 	Target diskette drive cannot read or write information.


IDE/SCSI hard disk drive cannot read or write information.

•	Incorrect disk drive jumper settings.

Refer to the supplied kit installation instructions..

•	Loose or incorrectly installed cables.

Make sure all cables are correctly installed.

•	IDE/SCSI hard disk drive is not correctly formatted or partitioned.

Format and partition as required using the supplied operating system

•	IDE drive type incorrect.

Run the BIOS Setup utility to identify the correct drive type.

•	Onboard IDE interface disabled.

Run the BIOS Setup utility and set the IDE controller option to Enabled.


Target diskette drive cannot read or write information.

•	Diskette is not formatted.

Format the diskette.

•	Diskette is worn or damaged.

Try another diskette.

•	Diskette is write-protected.

Slide the write-protect switch so the hole is not visible (3½-inch diskette) or uncover the writeprotect notch (5¼-inch diskette).

•	Diskette drive is empty.

Insert a diskette.

•	Onboard diskette controller disabled.

Run the BIOS Setup utility and set the diskette controller option to Enabled.

•	Diskette write protection enabled.

Run the BIOS Setup utility and set the Diskette Write Protection option to Disabled.


Monitor Troubleshooting

To determine the possible causes of and appropriate remedies for a given problem, click on the check-mark next to that item in the list below.  Possible causes of a given problem are listed in bold italic text; a suggested remedy appears below each listed cause in normal text.

 	Monitor power indicator is not on.

 	No screen display.

 	No monitor display while loading Windows video drivers.

 	Distorted, rolling, or flickering screen display, or wrong/uneven color.

 	Color monitor displaying monochrome.

 	Monitor fails to switch to high-resolution mode.

 	Monitor display not centered while loading Windows video drivers.


Monitor power indicator is not on.

•	Monitor is turned off.

Turn on the monitor.

•	Power cord is not connected.

Connect the power cord to the computer.

•	No power at wall outlet.

Use another outlet.

•	The monitor-off timer shut off the monitor.

Press [Shift] to reactivate the monitor.

•	Power indicator is defective.

Replace power indicator.


No screen display.

•	Configuration error.

Run the BIOS Setup utility to configure the computer for VGA operation.

Set the jumper for VGA operation.  See Main Logic Board Jumpers.

•	Monitor power cable is loose or disconnected.

Secure or reattach the monitor power cable.

•	Monitor brightness and contrast controls are incorrectly set.

Adjust the monitor brightness and contrast controls.

•	Onboard video controller failed.

Replace the main logic board.


No monitor display while loading Windows video drivers.

•	Monitor type incorrectly set.

Set the correct monitor type using the appropriate utility.  Also see any appropriate README files.

•	Wrong Windows driver loaded.

Load the correct video driver.


Distorted, rolling, or flickering screen display, or wrong/uneven color.

•	Monitor incorrectly adjusted.

Adjust accordingly.

•	Monitor signal cable incorrectly installed.

Straighten any bent connector pins and then reconnect.


Color monitor displaying monochrome.

•	Computer was turned on before the monitor was turned on.

Turn off the computer, turn on the monitor, then turn the computer back on.

•	Monitor type incorrectly set.

Set the correct monitor type using the appropriate utility.


Monitor fails to switch to high-resolution mode.

•	Appropriate high-resolution video drivers are not installed or incorrectly installed.

Correctly install all appropriate high-resolution video drivers.  Refer to Setting High Resolution Video Modes.

•	The video controller and/or monitor does not support the high-resolution mode that has been selected.

Check the system's README.TXT file and any information supplied with the monitor to determine an appropriate video resolution mode.  Correctly set the video-resolution mode and install the appropriate video drivers.  Refer to Setting High Resolution Video Modes and Using Windows 3.x Video Drivers.


Monitor display not centered while loading Windows video drivers.

•	Monitor type incorrectly set.

Set the correct monitor type using the appropriate utility.

•	Monitor display is mis-adjusted.

Adjust the display using the monitor's adjustment controls.


POST and Boot Messages

The POST displays messages to alert you to errors in hardware, software, and firmware or to provide operating information about your computer.

Each time the POST displays a message on your screen, the computer's speaker beeps twice.  If an error occurs before the monitor is initialized, specific beep codes sound to alert you to a problem.

POST and Boot Error Messages

POST and Boot Informational Messages


POST and Boot Error Messages

The following error messages are arranged in alphabetical order.

NOTE
Italics indicate variable parts of a message such as memory addresses, hexadecimal values, and so on.  These messages can differ at each occurrence.

Message	Problem	Solution
Diskette drive A error Diskette drive B error	Diskette drive has failed.	Run the BIOS Setup utility.  Check all connections.  If the problem persists, replace the defective diskette drive and/or drive cable.
Extended RAM Failed at offset: nnnn	Extended memory failed or configured incorrectly.	Make sure SIMMs are installed correctly (see Installing SIMMs).  If the problem persists, replace defective SIMMs.
Failing Bits: nnnn	nnnn is a map of the bits at the RAM address which failed the memory test.	Run the BIOS Setup utility and restore all to original values. If the problem persists, replace the defective memory.
Fixed Disk 0 Failure Fixed Disk 1 Failure Fixed Disk Controller failure	Hard disk drive and/or controller failed.	Run the BIOS Setup utility.  Check all connections.  If the problem persists, replace the defective hard disk drive and/or controller.
Incorrect Drive A type - run SETUP Incorrect Drive B type - run SETUP	Diskette drive A and/or B not correctly identified in the BIOS Setup utility.	Run the BIOS Setup utility and properly identify diskette drive A and/or B.
Invalid NVRAM media type	NVRAM access failed.	Run the BIOS Setup utility and restore all settings to original values.  If the problem persists, replace the defective component.
Keyboard controller error Keyboard error Keyboard locked - Unlock key switch	Keyboard and/or keyboard controller failed.	Check the keyboard connection.  If the connection is secure, the keyboard or keyboard controller might have failed.  If the problem persists, replace the defective keyboard and/or controller.
Monitor type does not match CMOS - Run SETUP	Monitor type has been incorrectly specified.	Run the BIOS Setup utility and set the correct monitor type.
Operating system not found	The operating system cannot be found on drive A or drive C.	Run the BIOS Setup utility and correctly identify drive A or drive C. Correctly install the operating system.  Refer to the supplied operating system documentation.
Press <F1> to resume, <F2> to Setup	This message appears after any recoverable error message.	Press <F1> to reboot or <F2> to enter the BIOS Setup utility to make any necessary changes.
Real time clock error	Real-time clock failed BIOS test.	Replace real-time clock and then run the BIOS Setup utility to restore previous configuration information.
Shadow RAM Failed at offset: nnnn	Shadow RAM failed.	Run the BIOS Setup utility and disable failed shadow memory region.
System battery is dead - Replace and run SETUP	Battery/real-time clock failed.	Replace the battery and then run the BIOS Setup utility to restore previous configuration information.
System cache error - Cache disabled	RAM cache failed.	Run the BIOS Setup utility and restore all settings to original values.  If the problem persists, replace the defective cache memory.
System CMOS checksum bad - run SETUP	Battery/real-time clock failed.	Correct the address conflict using the BIOS Setup utility.  If the problem persists, replace the battery/real-time clock.
System RAM failed at offset: nnnn	System RAM failed.	Run the BIOS Setup utility and restore all settings to original values.  If the problem persists, replace the defective memory.
System timer error	The computer's timer test failed.	Run the BIOS Setup utility and restore all settings to original values.  If the problem persists, replace the defective component.


POST and Boot Informational Messages

NOTE
Italics indicate variable parts of a message such as memory addresses, hexadecimal values, and so on.  These messages can differ at each occurrence.

Message	Description
nnnn Cache SRAM Passed	Where nnnn is the amount of computer cache (in kilobytes) that tested successfully.
Entering SETUP	BIOS Setup utility runs.
Extended RAM Passed	Where nnnn is the amount of extended memory (in kilobytes) that tested successfully.
nnnn Shadow RAM passed	Where nnnn is the amount of shadow RAM (in kilobytes) that tested successfully.
System BIOS shadowed	This indicates that your computer’s BIOS was successfully copied to shadow RAM.
nnnn System RAM passed	Where nnnn is the amount of system RAM (in kilobytes) that tested successfully.
UMB upper limit segment address: nnnn	Displays the address of the upper limit of UMB.  This indicates the released segments of the BIOS that can be reclaimed by a virtual memory manager.
Video BIOS shadowed	This indicates that your computer’s video BIOS was successfully copied to shadow RAM.


Beep Codes

When POST finds an error and cannot display a message, the computer's speaker emits a series of beeps to indicate the error and places a value in I/O port 80h.  During POST, if the video configuration fails or if an external ROM module fails a checksum test, then your computer beeps three times (one long beep, and two short beeps).

The following table lists other fatal errors and their associated beep codes.  Each code represents the number of short beeps that are grouped together.  Fatal errors (errors that lock up your computer) are generally the result of a failed main logic board or some other add-on component (SIMM, BIOS, computer battery, etc.).

Resolve any problems using the procedures in Troubleshooting.

Beep Code	Error Message	Port 80h
2-2-3	BIOS ROM checksum	16h
3-1-1	Test DRAM refresh	20h
3-1-3	Test keyboard controller	22h
3-4-1	Test 512K base address lines	2Ch
3-4-3	Test 512K base memory	2Eh
2-1-2-3	Check ROM copyright notice	46h
2-2-3-1	Test for unexpected interrupts	58h


Service Procedures

Introduction

Tools Needed

Before You Begin

Unlocking and Removing the Cover

Replacing and Locking the Cover

Opening the Device Bay and Power Supply Subassembly

Removing the Top Device Tray

Components

Computer Components

Expansion Slots

Main Logic Board Components

Main Logic Board Connectors

Mass Storage Devices

Voltage Select Switch

Mass Storage Devices and Expansion Boards

Installing a 3½-Inch Device into the Top Device Bay

Installing a 5¼-Inch Device into the Top Device Bay

Installing a 3½-Inch Mass Storage Device
(Slimline Internal Drive Bay)

Installing a 3½-Inch Mass Storage Device
(Full-Profile Internal Device Bay)

Connecting Diskette and IDE Devices

Installing Expansion Boards

Memory and CPU Upgrades

Installing Additional Computer Memory

Memory Configurations

Installing the CPU Voltage Regulator

Installing a Higher Performance CPU

Installing Video Memory

Installing SIMMs

Removing Components

Removing the 3½-Inch Diskette Drive

Removing and Replacing Computer Battery/Real Time Clock (RTC)

Removing Expansion Boards

Removing Main Logic Board

Removing Power Supply

Removing Riser Card & Bracket

Removing SIMMs


Tools Needed

The following tools are recommended:

•	A Phillips screwdriver

•	An anti-static wrist strap (required)

	WARNING See also Static Electricity


Before You Begin

Before removing the cover, do the following:

1.	Turn off power to all external devices connected to computer.

2.	Turn computer off.

3.	Unplug power cord from wall outlet.

4.	Disconnect power cord and monitor cord from computer.

	WARNING See also Static Electricity


Unlocking and Removing Side Panel
Unlocking and Removing the Cover

	WARNING You might injure yourself or damage the computer if you attempt to remove the side panel before unplugging ac and monitor power cords.
The computer's cover must be removed prior to installing any hardware option.  To remove the cover:

1.	Unlock cover.

2.	Lift both side locks out, then turn towards front of computer to release cover from chassis.

3.	Carefully slide cover forward until side locks clear the front bezel.

4.	Carefully lift cover from chassis.


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Replacing and Locking the Cover

To replace and lock your computer’s cover:

1.	Place cover on chassis.

Make sure side locks are clear of front bezel.

2.	Carefully slide cover toward rear of chassis and ensure that cover latching hooks are firmly seated in their corresponding slots in chassis.

Leave approximately 1/8-inch gap between cover and rear bezel.

3.	Turn both side locks toward rear of computer, then close locks to secure cover to chassis.

4.	Lock cover using key.


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Opening the Device Bay and Power Supply Subassembly

Use the following procedure to gain access to the inside of the computer.

1.	Turn off the computer.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove cover.

4.	For Slimline computers:
Slide front locking mechanism to right and release device bay and power supply subassembly.

Lift up on subassembly and lock it in place.

For Full-profile computers:
Pull tab (A) toward front of computer to release device bay and power supply subassembly.  Lift up on subassembly until it locks into place.


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Removing the Top Device Tray

1.	Turn off the computer.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove cover.

4.	Remove and save the three-piece filler panel.

NOTE
If you are installing a 5¼-inch diskette drive, make sure its drive ID is set to 1.  Refer to supplied kit installation instructions for appropriate drive ID locations.

5.	Remove screw securing top device tray to chassis.

Pull tray out from front of computer.


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 Computer Components


Legend - Computer Components

Figure
Legend	Component

A	Power supply

B	Main logic board

C	3½-inch diskette drive

D	Front access drive bay(s)

E	Front internal drive bay

F	Riser card.  Supports up to three expansion boards; two PCI and one ISA or two ISA and one PCI (Slimline model).

Riser card. Supports up to five expansion boards; two PCI and three ISA or four ISA and one PCI (full-profile model).

G	Rear internal drive bay (under power supply)


 Expansion Slots

 Slimline Expansion Slots

 Full-profile Expansion Slots

The Venturis Slimline computer's riser card contains four slots for installing:

•	Two ISA expansion boards and one PCI expansion board or

•	One ISA expansion board and two PCI expansion boards (refer to the table).

The Venturis full-profile computer's riser card contains six slots for installing:

•	Four ISA expansion boards and one PCI expansion board or

•	Three ISA expansion boards and two PCI expansion boards (refer to the table).

Your computer automatically assigns the necessary resources to any installed Plug and Play-compatible expansion board so it operates at maximum performance.  If you plan on installing non-Plug and Play expansion boards, you might need to manually set jumpers on the board based on the computer resources already allocated.

Refer to the on-line help information in the ICU.  You can access the ICU through the “Getting Started” program.

NOTE
When installing expansion boards, always read the accompanying documentation for computer memory address and IRQ requirements.  Compare that information to the computer memory and IRQ requirements in the appropriate CPU module specifications booklet.  If conflicts are detected, you must configure the expansion board to alternate settings.


Legend - Expansion Slots

NOTE
Only one expansion board can reside in slots ES2 and ES3 at any one time.  These slots share a single expansion slot opening at the rear panel.  Thus Slimline Venturis computers can support a maximum of three expansion boards at any one time, and Full-profile Venturis computers can support a maximum of five expansion boards at any one time.

Slimline Version

ES4	ISA	Supports full-length industry-standard 16-bit ISA expansion boards Uses the top expansion slot at the rear panel
ES3	ISA	Supports full-length industry-standard 16-bit ISA expansion boards Uses the middle expansion slot at the rear panel Designated as a shared slot with PCI slot ES2(1)
ES2	PCI	Supports full-length 32-bit PCI local bus expansion boards Uses the middle expansion slot at the rear panel Designated as a shared slot with ISA slot ES3(1)
ES1	PCI	Supports half-length 32-bit PCI local bus expansion boards Uses the bottom expansion slot at the rear panel

Full-profile Version

ES4 - ES6	ISA	Supports full-length industry-standard 16-bit ISA expansion boards Uses the top three expansion slots at the rear panel
ES3	ISA	Supports full-length industry-standard 16-bit ISA expansion boards Uses the fourth expansion slot at the rear panel Designated as a shared slot with PCI slot ES2
ES2	PCI	Supports full-length 32-bit PCI local bus expansion boards Uses the fourth expansion slot at the rear panel Designated as a shared slot with ISA slot ES3(1)
ES1	PCI	Supports half-length 32-bit PCI local bus expansion boards Uses the bottom expansion slot at the rear panel


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 Main Logic Board Components


Legend - Main Logic Board Components

Figure Legend	Component
A	Real-Time Clock (RTC)
B	ROM BIOS
C	On-board external cache (SRAM)
D	Microprocessor (CPU )
E	Onboard main memory (DRAM)
F	Riser card
G	Onboard video memory (VRAM)
H	Voltage regulator


 Main Logic Board Connectors


Legend - Main Logic Board Connectors

Figure Legend	Connector
A	Riser card
B	Diskette drive
C	DC power supply
D	Primary IDE drive
E	Secondary IDE drive
F	speaker connector
G	power on LED connector
H	HDD access LED connector
I	Two 72-pin, 36-bit SIMM sockets
J	Voltage regulator
K	VGA feature connector (output only)
L	Video (VGA) port
M	Parallel port
N	Serial ports
O	Mouse and keyboard


Mass Storage Devices

Venturis computers contain either four or five mass storage device bays:

•	The top device bay (for Slimline computers) or the top two device bays (for full-profile computers) can be accessed from the front of the computer and can hold 3½-inch or 5¼-inch half-height devices.  Examples include diskette drives, tape backup drives, CD-ROM drives, or hard disk drives.

•	The next-lower device bay contains a factory installed 3½-inch diskette drive.

•	The bottom-front and bottom-rear device bays are not accessible from the front of the computer and only support 3½-inch hard disk drives.

NOTE
Refer to the manufacturer's instructions for your mass storage device to determine if switches, jumper settings, or terminating resistors need to be set or installed on the device.  Set all applicable switches and jumpers, or remove terminating resistors prior to installing any mass storage device.

See also:	Computer Components


Voltage Select Switch

Slimline 	Full-profile

In most cases, your computer’s voltage select switch is set at the factory for the proper ac input power source available in your specific country.

	CAUTION  The voltage selection switch must match the voltage supplied by your power outlet. In North America 115 volts is common. In other countries 230 volts is common. Ensure that the voltage selection switch is set to the correct voltage. If it is not set correctly, you can damage your computer.


 Connecting Diskette and IDE Devices

 Diskette Cable Connections

 IDE Cable Connections

1.	Open device bay and power supply subassembly.

2.	Connect supplied ribbon cable to appropriate device as shown in the illustrations.

NOTE
If only one IDE device is installed, make sure you use the ribbon cable connector furthest from the main logic board connector.

Also, if you have IDE drives installed in both internal drive bays, make sure that the ribbon cable has no twists between the two IDE drives.

Make sure cable is connected with correct orientation.  Most cables and sockets are keyed so you cannot connect them backwards.  If your cable or device is not keyed, you must connect pin 1 of cable to pin 1 of device's socket.

Pin 1 of cable is on edge with colored stripe.  Pin 1 of device's socket should be marked with a number or symbol at one end of socket or with a number or symbol printed on circuit board near one end of socket.  If necessary, refer to the device's documentation for pin 1 orientation.

3.	Connect appropriate power cable to device.

4.	Close device bay and subassembly.

5.	Replace and lock cover.

6.	Connect external devices and restore power.

7.	Run BIOS Setup utility to configure computer.


Legend - Diskette/IDE Connections

	Diskette Drive Component	IDE Drive Component
A	Power supply	Power supply
B	Power connections	Power connections
C	Diskette drive connections	IDE hard disk drive connections
D	Main logic board diskette drive connection	Main logic board IDE drive connections
E	Diskette drives	IDE hard disk drive
F		IDE CD-ROM drive


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Installing Expansion Boards

NOTE
Read and fully understand your optional expansion board's documentation before installing it.

To install an ISA or PCI local bus expansion board:

1.	Turn off the computer.  Disconnect any external devices and unplug the power cord from the wall outlet.  Unplug the power cord and monitor cord from the back of the computer.

2.	Unlock and remove cover.

3.	Unscrew and remove the metal filler plate(s) from selected expansion slot.  Carefully remove the corresponding plastic filler panel(s) from the rear panel.

4.	Insert the new expansion board into the socket.  Push the board firmly into place.

5.	Replace the screw to secure the expansion board.

6.	Replace and lock cover.

7.	Reconnect any external devices and restore power.

See also:	Expansion Slots


Metal Filler Plate


Installing Additional Computer Memory

Adding more memory allows the computer to run larger, more complicated software and run it more quickly.

Venturis computers come with 8 MB of memory hardwired to the main logic board.  You can increase this amount up to a maximum of 128 MB using the two SIMM sockets on the main logic board.  However, when adding SIMMs make sure you:

•	Install 32-bit SIMMs having an access time of 70 ns or less.  Supported SIMM sizes:  4 MB, 8 MB, 16 MB, 32 MB or 64 MB.

•	For improved performance, Venturis computers are designed with interleaved memory.  This feature requires that you populate both sockets.  You must ensure that the SIMM in each socket is the same type, size, and speed.  Therefore, a 4-MB SIMM in Bank 0 requires a 4 MB SIMM in Bank 1.

See also:	Installing SIMMs
Removing SIMMs
Memory Configurations


Memory Configurations

Onboard	Bank 0	Bank 1	Total
8 MB			8 MB
8 MB	4 MB	4 MB	16 MB
8 MB	8 MB	8 MB	24 MB
8 MB	16 MB	16 MB	40 MB
8 MB	32 MB	32 MB	72 MB
Disabled	64 MB	64 MB	128 MB


Installing SIMMs

To install a SIMM, perform the following:

1.	Turn off the computer.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove cover.

4.	Install the SIMM into the socket at a 45 degree angle.

Be sure that the notch is oriented as shown (A).  Rock the SIMM gently until it is seated evenly into the bottom of the socket.  Tip the SIMM upright until the retaining clips at the ends of the socket both engage (B, C).

	CAUTION Use care when installing SIMMs. The retaining clips on the sockets can break if the SIMM is not seated correctly in the socket.
5.	Replace and lock cover.

6.	Connect external devices and restore power.

7.	Run the BIOS Setup utility by rebooting and pressing [F2] before POST completes.

8.	Select Save Changes and Exit.

The computer reboots and now recognizes the amount of new memory.  If you return to Setup, the Extended Memory field reflects the additional memory.

See also:	BIOS Setup Utility
Memory Configurations


Installing the CPU Voltage Regulator

Venturis computers have a voltage regulator that is required to operate with the CPU.  When upgrading the CPU, it might also be necessary to install the new voltage regulator that included with the CPU upgrade kit.

To install the voltage regulator:

1.	Turn off your computer.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove cover.

4.	Carefully pinch the harpoon ends on the plastic standoffs and remove the voltage regulator.

5.	Install new voltage regulator.

Make sure socket on voltage regulator is aligned with pins on main logic board connector.

6.	Align standoffs with holes in voltage regulator circuit card and carefully press down on voltage regulator until socket is fully seated and standoffs have secured circuit card.

7.	Replace and lock cover.

8.	Connect external devices and restore power.


Installing a Higher Performance CPU

Venturis main logic boards are equipped with a Pentium processor installed in a ZIF socket.

To install a higher performance CPU:

1.	Turn off the computer.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove cover.

4.	Lift up on lever to release old CPU.

Remove old CPU.

NOTE
The higher-performance CPU you are installing might require a different voltage regulator than the one currently installed.  Check the contents of your CPU kit for a voltage regulator.  If it is necessary to change the voltage regulator, see --.

5.	Install new CPU.

Make sure pin 1 on CPU is aligned with pin 1 on ZIF socket (A).

6.	Return release lever to its original position and then set all appropriate CPU jumpers (refer to Main Logic Board Jumper Settings ).

7.	Replace and lock cover.

8.	Connect external devices and restore power.


Installing Video Memory

Venturis computers are factory-equipped with 1 MB video memory.  This amount can be increased to 2 MB by installing two 512 MB video memory DRAM chips in the designated sockets on the main logic board.  To install the video memory upgrade chip:

1.	Turn off the computer.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove cover.

4.	Remove upgrade chips from packaging and install in socket.

Make sure pin 1 on chip is aligned with pin 1 on socket (A).

5.	Replace and lock cover.

6.	Connect external devices and restore power.

7.	Run the BIOS Setup utility by rebooting and pressing [F2] before POST completes.

8.	Select Save Changes and Exit.

The computer reboots and now recognizes the amount of new video memory.


Installing a 3½-Inch Device into the Top Device Bay

The following procedures describe how to install a 3½-inch device into the top device bay.

NOTE
Refer to the manufacturer's instructions for the device to determine if switches or jumper settings need to be set or installed on the device.  Set all switch and jumper settings accordingly.

Also, if installing a 3½-inch diskette drive, make sure its drive ID is set to 1.  Refer to supplied kit installation instructions for appropriate drive ID locations.

1.	Remove the top device tray.

2.	Remove screw securing metal face plate to top device tray.

3.	Attach 3½-inch device to metal face plate as shown.

4.	Secure metal face plate and 3½-inch device to 5¼-inch tray  using previously removed screw.

5.	Carefully slide tray into top device bay making sure tabs fully engage slots at front of chassis.

Secure 3½-inch device and tray using supplied mounting screws.

6.	If you installed a 3½-inch diskette drive, carefully remove bottom-right piece of filler panel.

Otherwise, install three-piece filler panel to front of chassis.

7.	Connect power and data cables to 3½-inch device.

See also:	Connecting Diskette and IDE Devices


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Installing a 5¼-Inch Device into the Top Device Bay

The following procedures describe how to install a 5¼-inch device into the top device bay.

NOTE
Refer to the manufacturer's instructions for the device to determine if switches or jumper settings need to be set or installed on the device.  Set all switch and jumper settings accordingly.

1.	Remove the top device tray.

2.	Remove screw securing metal face plate to top device tray.

Save metal face plate and screw for future use if you need to install a 3½-inch device.

3.	Attach 5¼-inch device to top device tray using supplied mounting screws.

At this time, secure device only to left side of tray.

4.	Carefully slide tray into top device bay making sure tabs fully engage slots at front of chassis.

Secure 5¼-inch device and tray using supplied mounting screws.

5.	Connect power and data cables to 5¼-inch device.

See also:	Connecting Diskette and IDE Devices


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Installing a 3½-Inch Mass Storage Device (Slimline Internal Drive Bay)

The following procedures describe how to install a 3½-inch mass storage device into the Slimline internal device bay.

NOTE
Refer to the manufacturer's instructions for the mass storage device to determine if switches or jumper settings need to be set or installed on the device.  Set all switch or jumper settings accordingly.

1.	Open the device bay and power supply subassembly.

2.	Remove power supply, IDE, and diskette cabling from main logic board noting their proper orientation.

3.	While holding the device bay and power supply subassembly, carefully release rear latch.

4.	Carefully slide entire subassembly away from chassis and place upside down on antistatic surface.

5.	Attach 3½-inch mass storage device to bottom-rear device bay  using supplied mounting screws.

Orient drive with IDE cable connector located towards the bottom of the chassis.  Ensure that the ribbon cable has no twists between IDE drives.

6.	Carefully slide device tray and power supply subassembly into front and rear slots of chassis.

Lock subassembly into place using rear latch.

7.	Carefully connect power supply, IDE and diskette cabling to main logic board, observing proper orientation of all cables.

8.	Release rear latch and close device bay and power supply subassembly.

9.	Slide front locking mechanism to left to secure device bay and power supply subassembly.

See also:	Connecting Diskette and IDE Devices


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Installing a 3½-Inch Mass Storage Device (Full-Profile Internal Device Bay)

The following procedures describe how to install a 3½-inch mass storage device into the internal device bay.

NOTE
Refer to the manufacturer's instructions for the mass storage device to determine if switches or jumper settings need to be set or installed on the device.  Set all switch or jumper settings accordingly.

1.	Open the device bay and power supply subassembly.

2.	Attach left side of 3½-inch mass storage device to device bay using supplied mounting screws.

Orient drive with IDE cable connector facing toward bottom of chassis.

3.	Connect power and ribbon cables to 3½-inch mass storage device.  Ensure that the ribbon cable has no twists between IDE drives.

4.	Lift up on lever (B) to release device bay and power supply subassembly.

Close subassembly and place tab in its original position (A).

5.	Attach 3½-inch mass storage device to right side of subassembly  using supplied mounting screws.

See also:	Connecting Diskette and IDE Devices


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Removing the 3½-Inch Diskette Drive

To remove the 3½-inch diskette drive:

1.	Turn off the computer.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove cover.

4.	Remove two screws securing the right side of diskette drive to chassis.

5.	Open the device bay & power supply subassembly.

6.	Disconnect power and ribbon cables.

7.	Remove two screws securing the left side of diskette drive to chassis.

8.	Slide the diskette drive out of the front of the chassis.

See also:	Connecting Diskette and IDE Devices


Removing Expansion Boards

To remove an expansion board:

1.	Turn off external devices and computer.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove cover.

4.	Remove screw from retaining bracket.

5.	Gently pull board outward.


Removing Main Logic Board

1.	Turn off external devices and computer.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove cover.

4.	Remove all connectors

Refer to Main Logic Board Connectors.

5.	Remove all expansion boards.

6.	Open the Device Bay and Power Supply Subassembly

6.	Remove the riser card and bracket.

7.	Remove screws and lift the board out.


Removing Power Supply

1.	Turn off external devices and computer.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove cover.

4.	Open the device bay and power supply subassembly.

5.	Remove power supply, IDE, and diskette cabling from main logic board, noting their proper orientation.

6.	While holding the device bay and power supply subassembly, carefully release the rear latch.

7.	Carefully slide entire subassembly away from chassis and place upside down on antistatic surface.

8.	Loosen two screws securing power on/off switch to chassis.

9.	Remove screws securing power supply (A) to chassis.

10.	Remove power supply and power on/off switch (B) from the subassembly.


  Removing Riser Card & Bracket


To remove the riser card and bracket:

1.	Turn off your computer.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove cover.

4.	Remove all expansion boards.

5.	Carefully lift riser card (A) and bracket (B) from computer.


Removing SIMMs

To remove SIMMs

1.	Turn off external devices and computer.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove cover.

4.	Press retaining clips out.

5.	Push SIMM down and pull out.


Removing and Replacing Computer Battery/Real Time Clock (RTC)

To replace the computer battery/real time clock:

1.	Record computer configuration settings using BIOS Setup.

2.	Turn off external devices and computer.

3.	Disconnect external devices, ac power, and monitor power.

4.	Unlock and remove cover.

5.	Carefully extract old RTC from socket.

6.	Install new RTC.

	CAUTION Make sure pin 1 on battery is correctly aligned with location on socket (A).  Incorrect installation can cause faulty computer operation.
7.	Replace and lock cover.

8.	Connect external devices and restore power.

9.	Run BIOS Setup utility to reconfigure computer using the settings recorded in step 1.

See also:	BIOS Setup Utility


static electricity

Static electricity collects on non-conductors such as paper, cloth, or plastic.  A static discharge can be damaging even though you cannot see or feel it.

To prevent damage to circuit boards and/or components:

•	Before touching any circuit board or component, wear an anti-static, grounding wrist strap and connect it to the computer’s chassis.

•	Keep circuit boards and components away from non-conductors.

•	Keep clothing away from circuit boards and components.

•	Keep circuit boards in anti-static bags.


FRU List (Part Numbers)

Part #	Description

  -RX23L-AA	FDD, 3½-inch 1.44MB

12-41706-04	Heat sink

12-44317-01	Speaker assembly

16-25105-18	Ferrite bead

17-03460-07	Flat cable, 34-pin

17-03461-07	Flat cable, 40-pin (Slimline)

17-03461-08	Flat cable, 40-pin (Full-profile)

17-03895-01	Flat cable, 50-pin

17-04139-01	LED wire assembly, yellow

17-04140-01	LED wire assembly, green

21-43651-02	CPU, P54C 90 MHz (B5 standard)

21-43651-03	CPU, P54C 90 MHz (B5 version)

21-43651-04	CPU, P54C 90 MHz (C2 standard)

21-43652-03	CPU, P54C 100 MHz (B5 VRE version)

21-43652-04	CPU, P54C 100 MHz (C2 standard)

21-43669-02	CPU, P54C 75 MHz (B5 standard)

21-43669-03	CPU, P54C 75 MHz (C2 standard)

30-42250-03	Power supply, 200W (Full-profile)

30-42709-01	Power supply, 100W (Slimline)

30-42791-01	Enclosure, 100W power supply (Slimline)

30-42803-01	Enclosure, 200W power supply (Full-profile)

36-17905-16	Label, 110-120V

36-17905-17	Label, 220-240V

36-41764-01	Label, Energy Star

36-42664-10	Label, regulatory; mod/sn, I/O port icon (Slimline/UK)

36-42664-11	Label, regulatory; mod/sn, I/O port icon (Slimline/US)

36-43148-25	Label, regulatory; UL/CSA/TUV/CE, Pal Pro (Slimline)

36-43148-26	Label, regulatory; UL/CSA/TUV/CE, Pal Pro (Full-profile)

36-43514-07	Label, regulatory; mod/sn, I/O port icon (Full-profile/US)

36-43514-08	Label, regulatory; mod/sn, I/O port icon (Full-profile/UK)

36-43540-05	Label, regulatory (Tao only)

36-44156-01	Label, 300W, Made in Taiwan

36-44156-02	Label, 450W, Made in Taiwan

36-44157-02	Label, icon label

37-01534-01	Package assembly (Slimline)

37-01534-03	Package assembly (Full-profile)

54-24012-01	Module, P54C main logic board (w/o CPU)

54-24018-01	PCI/ISA riser card (3 slots)

54-24020-01	PCI/ISA plus riser card (5 slots)

54-24062-01	Adapter board, 3.38V 5A (standard/VR CPU)

54-24062-02	Adapter board, 3.525V 5A (VRE CPU)

70-31934-03	CPU assembly, P54C 90 MHz

70-31934-04	CPU assembly, P54C 90 MHz

70-31934-05	CPU assembly, P54C 90 MHz

70-31935-02	CPU assembly P54C 75 MHz

70-31935-03	CPU assembly P54C 75 MHz

70-31936-02	CPU assembly, P54C 100 MHz

70-31936-03	CPU assembly, P54C 100 MHz

74-48976-20	Nameplate, Venturis 575

74-48976-21	Nameplate, Venturis 590

74-48976-22	Nameplate, Venturis FP 575

74-48976-23	Nameplate, Venturis FP 590

74-48976-27	Nameplate, Venturis 5100

74-48976-28	Nameplate, Venturis FP 5100

74-49160-01	Power on/off button (Slimline)

74-49161-01	Master key

74-49245-01	Power on/off button (Full-proflie)

74-49406-01	Lock, key

74-49408-01	Front panel, professional (Slimline)

74-49409-01	EMI shield, short

74-49410-01	EMI shield, long

74-49411-01	Front panel, professional (Full-profile)

74-49450-01	EMC finger (Slimline, Full-profile)

74-49451-01	EMC finger (Slimline)

74-49452-01	EMC finger (Full-profile)

74-49512-01	Peripheral support bracket (Slimline)

74-49513-01	Peripheral support bracket (Full-profile)

90-09996-01	Cable tie

EK-PCHWW-CM	Warranty & service card (multi-lingual)

ER-920WW-IA. A01	Venturis Quick Setup Guide (English)
ER-920WW-IG. A01	Venturis Quick Setup Guide (German)
ER-920WW-II. A01	Venturis Quick Setup Guide (Italian)
ER-920WW-IJ. A01	Venturis Quick Setup Guide (Japanese)
ER-920WW-IP. A01	Venturis Quick Setup Guide (French)
ER-920WW-IS. A01	Venturis Quick Setup Guide (Spanish)

ER-920WW-UA. A01	Venturis User's Guide (English)
ER-920WW-UG. A01	Venturis User's Guide (German)
ER-920WW-UI. A01	Venturis User's Guide (Italian)
ER-920WW-UJ. A01	Venturis User's Guide (Japanese)
ER-920WW-UP. A01	Venturis User's Guide (French)
ER-920WW-US. A01	Venturis User's Guide (Spanish)

ER-PNPAL-UA. A01	ISA Configuration Utility User's Guide (English)
ER-PNPAL-UG. A01	ISA Configuration Utility User's Guide (German)
ER-PNPAL-UI. A01	ISA Configuration Utility User's Guide (Italian)
ER-PNPAL-UP. A01	ISA Configuration Utility User's Guide (French)
ER-PNPAL-US. A01	ISA Configuration Utility User's Guide (Spanish)

ER-XAGAT-AA	Addendum sheet


System Specifications

Standard Computer Features

Standard Slots and Ports

Storage Bay Features


Standard Computer Features

IDE	32-bit PCI local bus IDE interface - supports up to four devices
Diskette	Dual diskette controller - supports two diskette drives: 720 KB, 1.44 MB, and 2.88 MB 3½-inch drive, and 360 KB, 1.2 MB 5¼-inch drive


Storage Bay Features

Front access	Slimline version 1 - 3½-inch (diskette drive), 1-inch high 1 - 5¼-inch half height or 3½-inch 1-inch high device Full-profile version 1 - 3½-inch (diskette drive), 1-inch high 2 - 5¼-inch half height or 3½-inch 1-inch high device
Internal	2 - 3½-inch, 1-inch high hard disk drives

See also:	 Front Panel Controls and Indicators


Standard Slots and Ports

Expansion slots	Riser card, Slimline version Supports up to three expansion boards: 2 PCI and 1 ISA or 1 PCI and 2 ISA Riser card, Full-profile version Supports up to five expansion boards: 2 PCI and 3 ISA or 1 PCI and 4 ISA
Serial COMM ports	2 serial ports - 16550 compatible UARTS
Printer port	1 parallel (full ECP and EPP support)
Mouse	PS/2 compatible
Keyboard	PS/2 compatible

See also:	Expansion Slots
Rear Panel Connectors


Technical Specifications

These topics provide information about the technical characteristics of the Venturis Computer.

CPU Specifications

Computer Performance Specifications

Computer Dimensions

Computer Environmental Specifications

ISA Expansion Slots

PCI Local Bus Expansion Slots

Power Supply and Input Power

Nominal Current Requirements

Power Cord Specifications

Main Logic Board Jumpers

Main Logic Board Jumper Settings


CPU Specifications

Feature	Specification
Type/speed	Pentium CPU at 75 MHz, 90 MHz, 100 MHz, and 120 MHz upgrade
Wait state	3,2,2,1 at 75 MHz, 256 KB cache 1 wait state for writes
Secondary cache	Direct-mapped, write-back 256 KB standard
Internal cache	16 KB


Computer Performance Specifications

Attributes	Specification
Bus clock	7.5/8.33 MHz
Data I/O    ISA    PCI	8-bit and 16-bit 32-bit
Main logic board DRAM	8 MB standard expandable up to 128 MB, using 64 MB SIMMs
System/VGA BIOS	128 KB FLASH ROM


Computer Dimensions

Slimline

Dimension	Specification
Width	366 mm (14.4 in)
Length	415mm (16.34 in)
Height	107 mm (4.21 in)
Weight	8.2 kg (18.08 lb.)

Full-profile

Dimension	Specification
Width	366 mm (14.4 in)
Length	415mm (16.34 in)
Height	156 mm (6.14 in)
Weight	11.5 kg (25.25 lb.)


Computer Environmental Specifications

Attributes	Specification
Operating temperature	10°C to 40°C (50°F to 104°F)
Storage temperature	−20°C to 65°C (−4°F to 149°F)
Operating humidity (noncondensing)	20% to 80% relative humidity,  maximum wet bulb 40 °C  (104 °F)
Storage humidity (noncondensing)	10% to 90% relative humidity,  maximum wet bulb 65°C  (149°F)
Altitude   Operating   Nonoperating	4,176 m (12,000 ft) maximum 4,876 m (16,000 ft) maximum
Shipping vibration	IAW Federal Standard 101, method 5019
Nonoperating shock	30 G, 25 ms halfsine


ISA Expansion Slots

The maximum available +5 V dc current allowable to any ISA expansion slot depends upon the following parameters:

•	Power supply capacity

•	The +5 V dc requirements of the main logic board and CPU module

•	The +5 V dc requirements of the peripherals

•	The power demands of all other slots in use


PCI Local Bus Expansion Slots

The main logic board riser card contains two PCI local bus expansion slots.  These slots support:

•	5 V dc only PCI expansion boards

•	Standard power PCI expansion slots (up to 25 watts)

•	Bus mastering


Power Supply and Input Power Requirements

The power supply provides four dc voltages: +12 V dc, −12 V dc, +5 V dc, and −5 V dc.  These voltages are used by the various components within the computer.  Rated input current includes outlet current.

Computer Input Power Requirements

Rated  Voltage Range	Maximum Range	Rated Input Current	Operating Frequency Range
100 V ac - 120 V ac	88 V ac  - 132 V ac	5 A	47 Hz - 63 Hz
220 V ac - 240 V ac	176 V ac - 264 V ac	2.5 A (Slimline) 2.8 A (Full-profile)	47 Hz - 63 Hz


Nominal Current Requirements

Venturis computers’ power supplies provide the following nominal current requirements:

Slimline

•	+5 V  	2 A min, 13 A max.

•	+12 V  	0 A min, 3.5 A max.

•	-5 V  	0 A min, 0.3 A max.

•	−12 V  	0 A min, 0.3 A max.

Full-Profile

•	+5 V  	2 A min, 22 A max.

•	+12 V  	0 A min, 6.5 A max.

•	-5 V  	0 A min, 0.5 A max.

•	−12 V  	0 A min, 0.5 A max.


Power Cord Specifications

	WARNING Do not attempt to modify or use an external 100 V ac (Japan only) or 115 V ac power cord for 220-240 V ac input power.  Modifying either power cord can cause personal injury and severe equipment damage.
An ac power cord is supplied with the computer.  Carefully inspect it and make sure it is the correct one for your country or region based on the criteria listed below.  If you feel the supplied ac power cord is incorrect, replace it with the correct power cord.

The power cord used with this computer must meet the following criteria:

•	UL and CSA Certified cordage rated for use at 250 V ac with a current rating that is at least 125% of the current rating of the product.  In Europe, the cordage must have the <HAR> mark.

•	The ac plug is terminated in a grounding-type male plug designed for use in the region.  It must also have marks showing certification by an agency acceptable in the region.

•	The connector at the computer end is an IEC type CEE-22 female connector.

•	The maximum cord length is 4.5 meters (14.5 feet).


Main Logic Board Jumpers

The illustration shows the locations of the main logic board jumper pins.  Note that the square pin of each jumper block is pin 1.

See the table in Main Logic Board Jumper Settings for a list of the main logic board jumpers and factory-default settings.

	CAUTION Do not touch any electronic component unless you are safely grounded.  Wear a grounded wrist strap or touch an exposed metal part of the system box chassis.  A static discharge from your fingers can result in permanent damage to electronic components.

See also:	Main Logic Board Jumper Settings


Main Logic Board Jumper Settings

Factory default settings are listed in blue.

Feature	Description	Setting
CPU clock input	66.6 MHz 60 MHz 50 MHz	J21 jumpered J22 jumpered J21 jumpered J22 open J21 open J22 open
CPU Core / Bus Freq. Ratio	3/2 2/1	J27, open J27, jumpered
Flash ROM upgrade	Enable Disable	J32, jumpered J32, open
Recovery mode	Normal Recovery mode	J10, open J10, jumpered
Password clear	Normal mode Password clear (MFG test)	J11, open J11, jumpered
CMOS clear	Normal operation  Clear CMOS	J16, pins 1 & 2 jumpered  J16, pins 2 & 3 jumpered


NOTE

ROM-based Setup must be enabled.


Device Mapping

These Help topics list device mapping information for Venturis computers.

	CAUTION Before changing any memory or address location, refer to the documentation supplied with the optional device, expansion board, or software application and make sure adequate information is available.  If not, contact the option or software manufacturer for further information.
NOTE
Plug and Play add-in cards are automatically configured by your computer’s BIOS.

The ICU must be run to properly configure computer resources for use with legacy ISA cards (that is, not Plug and Play ISA), in order to avoid conflicts with Plug and Play cards.  Refer to the on-line help information in the ICU, accessible through the “Getting Started” program, for specific information. Also, refer to the supplied ICU User’s Guide and any additional Plug and Play documentation supplied with the computer.

CPU Memory Address Map (Full Range)

I/O Address Map

Computer Interrupt Levels

DMA Channel Assignment


CPU Memory Address Map (Full Range)

Range	Function	Notes
0 KB to 640KB	main memory	PC compatibility range
640KB to 1024KB (1MB)	main memory	PC compatibility range ISA memory lower limit
1MB to 16MB	main memory	ISA memory upper limit
	memory space gap
16MB to 128MB	main memory	Computer memory


I/O Address Map

Range (hexadecimal)	Function
000 - 00F	DMA controller one
020 - 021	Interrupt controller one
040 - 043	Interval timer
060 - 06F	Keyboard controller
070 - 07F	Real-Time Clock (RTC), NMI
080 - 08F	DMA page register
0A0 - 0A1	Interrupt controller two
0C0 - 0CF	DMA controller two
0F0	Clear math co-processor busy
0F1	Reset math co-processor
0F8 - 0FF	Math co-processor
170 - 177	Secondary IDE controller
1F0 - 1F7	Primary IDE controller
278 - 27A	LPT2
2E8 - 2EF	COM4
2F8 - 2FF	COM2
378 - 37A	LPT1
3BC - 3BE	LPT3
3BD - 3BF	VGA register
3E8 - 3EF	COM3
3F0 - 3F7	Diskette (floppy disk) controller
3F6 - 3F7	Primary/secondary  IDE controller (alt status, device address)
3F8 - 3FF	COM1
46E8	VGA enable register:
42E8, 4AE8, 82E8, 86E8, 8AE8, 8EE8, 92E8, 96E8, 9AE8, 9EE8, A2E8, A6E8, AAE8, AEE8, B2E8, B6E8, BAE8, BEE8, E2E8, E2EA	VGA enhanced mode registers


Computer Interrupt Levels

Interrupt Number	Interrupt Source
IRQ0	Timer tick
IRQ1	Keyboard controller
IRQ2	Cascade interrupt
IRQ3	COM2, COM4 (if enabled)
IRQ4	COM1, COM3 (if enabled)
IRQ5	LPT2
IRQ6	Diskette drive (if enabled)
IRQ7	LPT1, LPT3 (if enabled)
IRQ8	Real Time Clock (RTC)
IRQ9-IRQ11	Reserved
IRQ12	Mouse interrupt (if enabled)
IRQ13	Math co-processor
IRQ14	IDE primary (if enabled)
IRQ15	IDE secondary (if enabled)


DMA Channel Assignment

Channel	Controller	Function
0	1	Refresh
1	1	Not used
2	1	Diskette controller (if enabled)
3	1	ECP mode
4	2	Cascade DMA
5	2	Not used
6	2	Not used
7	2	Not used


Interface Connectors

These topics list the pin assignments for your computer's external connectors.

•	Parallel Printer Connector
25-pin D-submini female

•	Serial Port Connectors
9-pin D-submini male

•	Keyboard and Mouse Connectors
6-pin mini-DIN


Parallel Printer Connector

The parallel printer connector provides an interface to a printer or other parallel devices.  The table below lists pin assignments.  An asterisk (*) indicates an active low signal.

Parallel Printer Pinout

DB25 Pin	Signal	Function
1	STB-R*	Strobe
2	PRTD0	Printer data bit 0
3	PRTD1	Printer data bit 1
4	PRTD2	Printer data bit 2
5	PRTD3	Printer data bit 3
6	PRTD4	Printer data bit 4
7	PRTD5	Printer data bit 5
8	PRTD6	Printer data bit 6
9	PRTD7	Printer data bit 7
10	ACK*	Acknowledge
11	BUSY	Busy
12	PE	Paper end
13	SLCT	Select
14	AUTOFDXT*	Autofeed
15	ERR*	Error
16	INIT*	Initialize printer
17	SLCTIN*	Select input
18 to 25	GND	Ground


Serial Port Connectors

The serial port connectors consist of two 9-pin D-submini connectors. The two connectors are not interchangeable.  The table below lists the pins assignments.

The baud rates supported by the computer's serial ports are 300, 1200, 2400, 4800, 9600, 19 200, and 38 400.

9-Pin Serial Port Pinouts

DB9 Pin	Signal	Function
1	DCD	Data carrier detect
2	RXD	Receive data
3	TXD	Transmit data
4	DTR	Data terminal ready
5	GND	Ground
6	DSR	Data set ready
7	RTS	Request to send
8	CTS	Clear to send
9	RI	Ring indicator


Keyboard and Mouse Connectors

The keyboard and mouse connectors consist of two 6-pin mini-DIN connectors.  The table below lists the pin assignments.

Keyboard and Mouse Connector Pinouts

Pin	Signal
1	Data
2	Reserved
3	Ground
4	+5 V dc (fused)
5	Clock
6	No connection


Glossary

512KB-640KB mapping

AT bus space

BIOS

Cache BIOS ROM

Cache video ROM

CPU speed

flash memory

HDD data transfer method

new screws

PCI device

Primary cache

Recovery diskette

Secondary cache

Shadow 32K at C8000, D0000, and D8000

Shadow video ROM

SIMM

static electricity

ZIF


512KB-640KB Mapping

This BIOS Setup option allows the address space between 80000 (512 KB) and 9FFFF (640 KB) to be mapped to the PCI or ISA bus.  Note that when this option is enabled, the amount of conventional memory under MS-DOS is reduced by 128 KB.


AT Bus Space

This BIOS Setup option selects a memory hole in upper memory (between 1 MB and 16 MB) to be used by optional network expansion boards or optional software using frame-grab memory.  Selecting an available memory hole range avoids memory address conflicts by mapping the physical memory that has been addressed to the region to the top of main memory.

Refer to the user documentation supplied with the optional network expansion board or optional software to see if a specific memory range is required for proper operation.  Also make sure the operating system can support the memory hole selections prior to enabling this feature.


BIOS

Basic Input/Output System


Cache BIOS ROM

This BIOS Setup option allows the computer's BIOS to be stored in memory for further use by the primary cache and secondary cache (if installed).  This increases computer performance because BIOS instructions are executed in cache instead of RAM.


Cache Video ROM

This BIOS Setup option allows the computer to store video BIOS information in cache memory for more efficient use.  Caching the computer's video ROM provides greater performance at the VGA level.  However, when running certain application software, conflicts might occur.


server battery/real time clock:
computer battery/real time clock

Runs the computer clock and retains any configuration information when it is turned off.


CPU Speed

This BIOS Setup option determines the speed used by the computer each time it is turned on or rebooted.

•	Fast—is the normal speed and causes the CPU to run at its rated speed.

•	Slow—(equivalent to 8 MHz) is used to reduce the effective CPU speed to be compatible with some speed-dependent application programs.

If an application program does not run correctly at full speed, try disabling all caches or changing the CPU speed to slow.

	CAUTION Computer performance will be severely degraded while operating in slow mode.


flash memory

Enables the PHLASH.EXE software to restore or update your computer's BIOS.


HDD Data Transfer Method

This BIOS Setup option allows the computer to take advantage of new IDE hard disk drive technologies.   Setting this option to Auto Optimum allows the computer's BIOS to interrogate and automatically set up any installed IDE hard disk drive for optimum performance.


Large Drive Addressing

This BIOS Setup option controls the way in which the computer addresses large-capacity hard disk drives.

This option should be set to standard for IDE hard disk drives up to 528 MB.  When using IDE drives greater than 528 MB and MS-DOS or MS-Windows as the computer's operating system, select LBA convert.  Select standard for all other operating systems.


new screws

Do not use old screws.  They might be too long and, as a result, can damage your device's internal mechanisms.


PCI Device

This BIOS Setup option configures the PCI slots on your computer's main logic board when adding PCI expansion boards.

	CAUTION The PCI Device selections for factory installed PCI expansion boards should stay at the factory default settings.  Modifications can cause computer failure.


PCI local bus

Peripheral Component Interconnect (PCI) Local Bus delivers maximum computer performance by providing a wider data path, greater speed, and improved expandability.


Primary Cache

This BIOS Setup option enables or disables the microprocessor's internal (primary) cache.  Enabling the cache controller significantly improves computer performance by reducing the average number of wait states seen by the microprocessor.

However, in some instances disabling the primary cache may be appropriate; for example, while using time-dependent software.  In this instance, the computer can operate but not at full potential.


recovery diskette

A recovery diskette should always be prepared before attempting to upgrade the BIOS.  This diskette contains a BIOS image and a program to load the image into flash memory.


Secondary Cache

This BIOS Setup option enables or disables the computer's external (secondary) cache.  Enabling the secondary cache significantly improves computer performance by reducing the average number of wait states seen by the microprocessor.

However, in some instances, disabling the secondary cache might be appropriate; for example, while using time-dependent software.  In this instance, the computer can operate but not at full potential.

Also, this field can be set to either Write-Back or Write-Through mode.

NOTE
If no secondary cache is installed, make sure this option is set to disabled.


SETUP.EXE

Digital recommends that SETUP.EXE be used only when the ROM Based Setup option must be enabled.


Shadow 32K at C8000, D0000, and D8000

These BIOS Setup options allow the computer to shadow any device BIOS located in the C8000 to DFFFF address space.  Shadowing device BIOS in these areas increases the computer's overall performance.

NOTE
Refer to the device's documentation to determine if this function can be performed.


Shadow Video ROM

The main logic board reserves an area of DRAM for a copy of video BIOS ROM.  This DRAM called "shadow memory" is write-protected and has the same addresses as the video BIOS ROM locations.  When video BIOS ROM is shadowed, the ROM information is copied into an appropriate area in DRAM.  This increases the computer's performance because the video BIOS instructions are in fast DRAM instead of ROM.


SIMM

Single In-line Memory Module


ZIF

Zero Insertion Force.  A ZIF socket enables easy upgrading of the CPU module by adding a higher performance CPU chip.