Copyright: ©1994 Digital Equipment Corporation
Citation: ©1994 Digital Equipment Corporation


Contents

DECpc LPx 560/566 Field Service/Field Training - Version 1.0

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

About This Help System

Introduction

General System Features

System Utilities & Configuration

Expanding Your Computer

Computer Messages

Problem Solving and Troubleshooting

Device Mapping

FRU List (Part Numbers)

Technical Specifications

Related Material

For Help on Help, Press F1


General System Features

Pentium/PCI CPU Features

PCI Features

Standard Computer Features

Standard Slots and Ports

Storage Bay Features

Front Panel Controls and Indicators

Rear Panel Connectors and Voltage Select Switch


System Utilities & Configuration

System Utilities  Diskette

Using the System Utilities Diskette

About UPGRADE.EXE

Creating a Recovery Diskette

Upgrading Your Computer's BIOS

Running SETUP.EXE

Configuring Your Computer

Running the BIOS Setup Utility

BIOS Setup Utility Options

Running KP.EXE


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 © 1994 Digital Equipment Corporation.


Introduction

DECpc LPx 560/566 computers are high-performance personal computers equipped with the latest microprocessor and PCI local bus technology.  They can be used as stand-alone computers, as clients, or as servers in an network environment.  Developed using modular CPU technology and offering a host of high-performance options, the DECpc LPx 560/566 offers you the most advanced computer in its class.  Note that your monitor, keyboard, and mouse might look different from the one shown.

Computer Description
All DECpc LPx 560/566 computers are industry-standard Intel Pentium microprocessor-based PCs using a versatile full profile ISA-style enclosure.  The computer features a modular CPU board design that allows easy computer upgrades to the latest available CPU technology.  The Intel Pentium-based CPU modules offer full 64-bit processing with ZIF technologies upgradeability via future Intel OverDrive CPUs.


Pentium/PCI CPU Features

Your DECpc LPx 560/566 computer contains an Intel Pentium CPU.  The Pentium CPU and related high-performance caching circuitry are located on a CPU module connected to the main logic board inside your computer.  Pentium/PCI CPU features include:

•	Pentium CPU operating at 60 or 66 MHz

•	Standard 256 KB of secondary cache memory

•	ZIF socket for CPU upgrades


PCI Features

Your computer's PCI architecture 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 wider, faster data path.  This results in faster data transfers for devices such as SCSI controllers and high-end video adapters.  This is extremely important while running graphic-intensive software.  Features include:

•	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


Standard Computer Features

IDE	Dual IDE controller - supports 2 drives and 32-bit accesses under Windows

Floppy	Dual floppy controller - supports 2 drives:
720 KB, 1.44 MB, 2.88 MB 3½-inch drives, and
360 KB, 1.2 MB 5¼-inch drives


Storage Bay Features

Front access	1 - 3½-inch (diskette drive) 1-inch high
3 - 5¼-inch low-profile bays (optional storage devices)

Internal	1 - 3½-inch low-profile bay (hidden for hard disk use)

See also:	 Front Panel Controls and Indicators


Standard Slots and Ports

Expansion slots	4 ISA slots and 2 PCI 32-bit local bus slots or
3 ISA and 3 PCI 32-bit local bus slots

Serial COMM ports	2 serial ports - 16550 compatible

Printer port	1 parallel (bi-directional)

Mouse	PS/2 compatible

Keyboard	PS/2 compatible

See also:	Expansion Slots
Rear Panel Connectors and Voltage Select Switch


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.


drive bays

These are the upper 5¼-inch drive bays.


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.


reset button

This button resets the computer and causes the POST to run.


power light

The power light 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.


Rear Panel Connectors and Voltage Select Switch

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


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.


hard drive

This is the hidden (internal) 3½-inch drive bay.


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.


analog video connector

Provides the interface between a video adapter and a supported monitor.  (This connector is found on PCI video cards such as Digital's 928/PCI Video Adapter card.)


parallel port connector

This port allows you to connect an industrystandard parallel printer.


ISA expansion slots

These slots allow you to install up to three ISA expansion boards.


PCI expansion slots

These slots allow you to install up to two PCI local bus expansion boards.


ISA/PCI shared expansion slot

This slot allows you to install either a fourth ISA expansion board or a third PCI local bus expansion board.


chassis lock

Locks the cover in place to prevent unauthorized access.


voltage select switch

Allows you to switch from 115 V ac input power to 230 V ac input power.


System Utilities Diskette

Your computer comes with an MS-DOS bootable System Utilities diskette containing these programs:

•	SETUP.EXE — allows you to run an MS-DOS executable version of the BIOS Setup utility

•	KP.EXE — allows you to set a keyboard and mouse password

•	UPGRADE.EXE — allows you to upgrade or restore your computer's BIOS via Flash ROM

Before Using the Supplied Diskette

If you are unfamiliar with utility programs and their uses, carefully read and understand the following information before attempting to use the System Utilities diskette.

Also, make sure your computer operates as expected following the instructions in Chapter 1 of your User's Guide.

See also:	Configuring Your Computer


Using the System Utilities Diskette

This diskette allows you to:

•	Run an MS-DOS executable version of the computer's BIOS Setup utility (SETUP.EXE)

•	Set a keyboard and mouse password (KP.EXE)

•	Upgrade or restore the computer's BIOS (UPGRADE.EXE)

NOTE	If this is the first time using the System Utilities diskette, it is recommended that you follow the procedures in the order given.

1.	Make a backup copy of System Utilities diskette and then store original in a safe place.

2.	Turn on or reboot your computer.

3.	Insert backup copy of System Utilities diskette into drive A.

4.	Run UPGRADE.EXE, SETUP.EXE, or KP.EXE.

5.	Remove System Utilities diskette and then reboot computer so changes immediately take effect.


UPGRADE.EXE
About UPGRADE.EXE

All computers have BIOS software in a read-only, non-volatile memory (ROM) chip.  This BIOS initializes hardware and boots the operating system when the computer is turned on.  The BIOS also provides access to other services such as keyboard and disk drives.

Your computer comes equipped with flash memory.  This means that you can restore your computer's BIOS simply by running the UPGRADE.EXE utility contained on the supplied System Utilities diskette.  You can also upgrade your computer's BIOS to future releases by running UPGRADE.EXE along with any flash BIOS update diskette if necessary.

 Before Using UPGRADE.EXE


Before Using UPGRADE.EXE

If you are not familiar with utility programs and their uses, carefully read and understand the following information before attempting to use UPGRADE.EXE.

Make sure your computer operates as expected using the instructions in Chapter 1 of your User's Guide.

Have the following items available before you begin:

•	Blank formatted diskette

•	System Utilities diskette (supplied with your computer)

•	Recovery diskette

NOTE	Before attempting to upgrade the flash BIOS, ensure that J35 is set correctly.  To perform a flash BIOS upgrade, J35 must be set to enable.  After the upgrade, make sure J35 is set back to disable as a security measure (if desired).

See also:	Creating a Recovery Diskette
Technical Specifications


Creating a Recovery Diskette

1.	Insert your backup copy of the System Utilities diskette into drive A.

2.	Turn on your computer.

3.	At MS-DOS prompt, type a:upgrade, and then press [Enter].

This invokes UPGRADE.EXE.  Also, the following menu items appear on the screen:

Make Recovery Diskette from Flash
Make Recovery Diskette from Image File
Upgrade Flash from Image File
Save Flash to Image File
Compare Flash to Image File
BIOS Information
Exit

For additional on-line help,  press [F1].

4.	Select the Make Recovery Diskette from Flash menu option.

The message, "Please select the diskette drive that you will use to create a Flash Recovery Diskette, or select "Cancel" to abort," appears on your screen.

5.	Press [Tab] or the up and down arrow keys to the highlight diskette drive you want to use, then press [Enter].   Drive A is the default diskette drive.

The message, "Insert a formatted diskette into drive A.  The contents of this diskette will be lost!  and replaced with system recovery software and the BIOS image you specified.  Select "Continue" to start writing the recovery diskette, or "Cancel" to abort," appears on screen.

6.	Insert a blank (formatted) diskette in drive A, and select Continue to proceed with creating a recovery diskette.  A message window notifies you when it completes.  Press any key to continue.

7.	Remove the recovery diskette and store it in a safe place.


Upgrading Your Computer's BIOS

1.	Insert your backup copy of the System Utilities diskette into drive A.

2.	Select the Upgrade Flash from Image File menu option.

You are then prompted to select a BIOS image file to program into flash memory.

NOTE	If your BIOS resides on a diskette, you need to use that diskette to upgrade your BIOS.

3.	Press [Enter] to list a directory of .BIN (BIOS image) files.  Select the image file you want to use.

The message, "Your BIOS will now be replaced by the new BIOS image you selected.  Select "Program" to start, or "Cancel" to abort.  Keep in mind that programming a new BIOS into Flash memory requires a fair amount of power.  If you are running on battery power you should have a full charge!" appears on your screen.

4.	Press [Enter] to continue programming the new BIOS into flash memory.

The message, "DO NOT TURN OFF THE POWER," appears on your screen.

The flash memory is erased, and replaced by a new BIOS.  Depending on size of flash memory, programming takes 20-40 seconds.  When programming completes, a message briefly appears on your screen, then the computer attempts to reboot.

5.	Remove your backup copy of the System Utilities diskette and allow your computer to reboot without error.

If an error occurs, a siren sounds while your computer attempts to boot signaling that your flash memory is corrupted.  If this occurs, insert the recovery diskette into drive A or B so the original BIOS can be copied back into flash memory.

If your computer does not reboot and the siren does not sound, turn off your computer.  Set the main logic board jumper J34 to recovery mode.  This forces a BIOS recovery process.

⇒	See Technical Specifications

6.	Insert your backup copy of the System Utilities diskette into drive A, invoke UPGRADE.EXE, and then select the Compare Flash to Image File menu option.

The message, "Select BIOS Image File Name to compare against flash memory," appears on your screen.

7.	Press [Enter] to display a list of .BIN (BIOS image) files.  Select the .BIN file you want to compare with flash memory.

A message window shows whether flash memory contains the same BIOS as the disk file.

Press any key to continue.

8.	If applicable, select the Save Flash to Image File menu option.  This option reads BIOS out of flash memory and stores it on a disk file.  A valid image file can be used with other upgrade commands that need an image file.

The default name for the image file is DEFAULT.BIN.  You can type in a different file name if you do not want to use the default name.

9.	Exit UPGRADE.EXE and remove your backup copy of the System Utilities diskette.


SETUP.EXE
Running SETUP.EXE

SETUP.EXE allows you to select and permanently store information about the computer's installed 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 you run Setup.

To access SETUP.EXE:

1.	Turn on your computer.

2.	Allow POST to complete.

•	If an error message appears on your screen, see Computer Messages,

3.	Insert your backup copy of the System Utilities diskette into drive A.

4.	Type a:setup then press [Enter].

Page 1 of Setup appears.

5.	Press the right arrow key to move the cursor to the ROM Based Setup option.  Change the setting to Enable/Disable.

•	See also:	Configuring Your Computer

6.	Exit SETUP.EXE (saving the changes).

7.	Remove your backup copy of the System Utilities diskette and then reboot your computer.


KP.EXE

KP.EXE is an MS-DOS executable file that allows you to set a password for the keyboard and mouse without turning off your computer.  When you set this password, the keyboard and mouse can not process any input other than the current keyboard and mouse password.  Setting this password secures your computer against unauthorized access while your computer remains turned on.

If you set a keyboard and mouse password, each time you turn off your computer, the password is deleted.  When you turn on the computer again, you must set a new keyboard and mouse password.  When you have a power-on password set, the power-on password becomes the keyboard and mouse password.

Keyboard and mouse passwords can have as many as seven upper or lower case keyboard characters and is recorded exactly as you enter them.  For example, if you use the 6 from the typewriter key section of the keyboard, you cannot substitute the 6 from the numeric keypad.

NOTE	When you create a keyboard and mouse password, the characters do not appear on the screen as you type them.  Each time you enter or change a keyboard and mouse password, the characters also do not appear on the screen as you type them.

See also:	Copying KP.EXE onto Your Computer's Hard Disk
Setting a Keyboard and Mouse Password


Copying KP.EXE onto Your Computer's Hard Disk

1.	Turn on your computer and allow POST to complete without error.

2.	Insert your backup copy of the System Utilities diskette into drive A.

3.	At the MS-DOS prompt type a: then press [Enter] to access drive A.

4.	At the A:\> prompt type copy kp.exe c: then press [Enter].

KP.EXE is then copied onto drive C of your computer's hard disk.

5.	Remove your backup copy of the System Utilities diskette.


Setting a Keyboard and Mouse Password

After copying KP.EXE onto your computer's hard disk, you can set a keyboard and mouse password using the following information.

1.	At the MS-DOS prompt type kp then press [Enter].  You are then prompted to enter a password.

NOTE	Other applications, such as QEMM386 V6.01, use the character string kp to invoke or enable commands.  If you have such an application installed, add the /nic parameter when you want to set a keyboard and mouse password using the Keyboard Password utility.

2.	Enter a password then press [Enter].  You are then prompted to type the password again to verify it.

3.	Enter the password then press [Enter].  The keyboard has been locked.

4.	To unlock your keyboard, enter the password and press [Enter].


Configuring Your Computer

The information in the Help topics listed below explains how to configure your computer using the BIOS Setup utility.  If your computer was delivered with factory-installed software, it has already been configured.

If you are familiar with utility programs and their uses, refer to the material in the options table as you update your computer.  Otherwise, carefully read and understand all the information in both of these Help topics before attempting to modify your computer's configuration settings

See also:	Running the BIOS Setup Utility
Helpful Hints
BIOS Setup Utility Options


Running the BIOS Setup Utility

The BIOS Setup utility enables you to select and permanently store information about the computer's hardware and software in the batterybacked memory of the CMOS RAM.  This information takes effect each time the computer boots and can be changed each time you run setup.

Use the BIOS Setup utility if you experience problems with your hard disk or need to reconfigure your computer.  In addition, the BIOS Setup utility should be used to modify the configuration after you add or remove hardware, or change computer settings.

To run the BIOS Setup utility:

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

2.	Make a note of any configuration errors listed, and then press [F1] to display the first of three setup screens.

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

 Helpful Hints


Helpful Hints

•	Several keyboard function keys and numeric keypad keys are assigned to help you select menus and options, change option values, and display help information.  These keys are displayed at the bottom of each setup configuration screen.

•	On-line help pop-up screens are available at anytime during the setup process.  These screens provide information about highlighted options and, in some cases, offer suggestions on how to choose the correct field for a selected option.  To access these screens, highlight an option and press [F1].

•	Press [F2] to display important computer information.  Record all pertinent information.

•	Press [Esc] then press [F4] to exit the BIOS Setup utility and reboot your computer so changes immediately take effect.

•	Press [Esc] then press [F6] to exit the BIOS Setup utility without changes taking effect.

•	Press [Esc] then press [F5] to set all BIOS Setup utility options to their default values.


BIOS Setup Utility Options

Specific notes pertaining to some Setup options may be obtained by clicking on colored entries in the Setup Field column below, and/or by clicking on the icons in the rightmost column.

Setup Field	Settings	Comments
System time	Current time	Displays the current time
System date	Current date	Displays the current date
Language	English  Français Deutsch Italiano Español Nederlands	The language field in SETUP.EXE contains all the languages listed as possible settings.  The BIOS Setup utility has English only.  Run the UPGRADE.EXE program from the System Utilities diskette to load on of the five languages available on the multilingual BIOS diskette.  The BIOS Setup utility appears as an F1 prompt each time you boot your computer.
Diskette A / Diskette B	3.5", 1.44 MB 3.5", 2.88 MB Not Installed 5.25", 360 KB 5.25", 1.2 MB 3.5", 720 KB	Sets the size and density of diskette drives
Hard disk 1 / hard disk 2	Drive types 1 through 49	Enables hard drive size and specific parameters from a predetermined list of drive types.  Drive types 2 and 3 or 48 and 49 are user definable for hard drives not listed in the BIOS drive table
Base memory	Not user selectable	Displays the size of base (conventional) memory
Extended memory	Not user selectable	Displays the current amount of extended memory
Video card	VGA or EGA CGA 40 Column CGA 80 Column Monochrome Not Installed	Sets the video controller type
Keyboard	Installed Not Installed	Enables or disables the keyboard when using the computer as a network server
NumLock on boot	On Off	Enables or disables the NumLock feature each time the computer boots
Password	System power-on password Setup password System power-on and setup password Not Installed	Enables or disables a system power-on and/or BIOS setup password
ROM based setup	Enabled Disabled	Enables or disables the ROM base setup utility
Mouse port	Enabled Disabled	Enables the mouse port and assigns IRQ12 Disables the mouse port and frees up IRQ12 for option use
Parallel port	Enabled at: 378h-37Ah (IRQ7) Enabled at: 278h-27Ah (IRQ7) Enabled at: 3BCh-3BEh (IRQ7) Disabled Compatible mode Extended mode	Enables or disables any desired onboard printer port at the specified address Allows you to select between standard printer and bi-directional applications
Serial port 1	Enabled at: 3F8h-3FFh (IRQ4) Enabled at: 2F8h-2FFh (IRQ3) Enabled at: 3E8h-3EFh (IRQ4) Enabled at: 2E8h-2EFh (IRQ3) Disabled	Enables or disables any desired onboard serial port at the specified address
Serial port 2	Enabled at: 2F8h-2FFh (IRQ3) Enabled at: 3E8h-3EFh (IRQ4) Enabled at: 2E8h-2EFh (IRQ3) Disabled Enabled at: 3F8h-3FFh (IRQ4)	Enables or disables any desired onboard serial port at the specified address
Diskette drive	Enabled Disabled	Enables or disables the onboard diskette drive controller
Exchange diskette drives	Disabled Enabled	Allows you to logically exchange physical diskette drive designations
Diskettes write protection	Disabled Enabled	Enables or disables the selected diskette drive's write protect option
IDE hard disk drives	Enabled Disabled	Enables or disables the onboard IDE disk drive controller Disable this option if you have a SCSI controller installed in one of the expansion board slots
HDD user definable types	Types 2 and 3 Types 48 and 49	The BIOS Setup utility allows types 2 and 3 or types 48 and 49 to be user definable
Large drive addressing	Standard LBA convert	Allows you to use standard (hard disk drives up to 528 MB) or LBA convert (hard disk drives greater than 528 MB) addressing
HDD data transfer method	Standard PIO	Allows for a standard, compatible data transfer method (one data block per interrupt)
	Auto optimum	Allows the computer's BIOS to automatically set up the installed drive for optimum performance (multiple data blocks per interrupt)
Boot from diskette A	Enabled Disabled	Enables or disables drive A as the logical boot device
Boot from hard disk C	Enabled Disabled	Enables or disables drive C as the logical boot device
CPU speed	Fast Slow	Determines the speed used by your computer each time you turn it on or reboot
Primary cache	Enabled Disabled	Enables or disables your CPU's internal cache
Secondary cache	Enabled WT Enabled WB Disabled	Enables or disables your computer's external cache in WT or WB mode
Cache BIOS ROM	Enabled Disabled	Allows you to enable or disable a caching request for your computer's BIOS
Shadow video ROM	Enabled Disabled	Enables or disables your computer's shadow video ROM option
Cache video ROM	Enabled Disabled	Enables or disables your computer's cache video ROM option
Shadow 32K at C8000	Enabled Disabled	Enables or disables your computer's C8000 shadow option
Shadow 32K at D0000	Enabled Disabled	Enables or disables your computer's D0000 shadow option
Shadow 32K at D8000	Enabled Disabled	Enables or disables your computer's D8000 shadow option
AT bus space	Disabled	Memory hole not available Upper memory is contiguous
	F80000h, .5MB	Sets the memory hole at address F80000 with .5 MB memory available
	F00000h, 1MB	Sets the memory hole at address F00000 with 1 MB memory available
	E00000h, 1MB	Sets the memory hole at address E00000 with 1 MB memory available
	E00000h, 2MB	Sets the memory hole at address E00000 with 2 MB memory available
	C00000h, 4MB	Sets the memory hole at address C00000 with 4 MB memory available
512KB-640 KB mapping	Main memory PCI/ISA	Allows you to map the  memory region between 512KB to 640KB to your computer's main memory Allows you to map the  memory region between 512KB and 640KB to the PCI or ISA bus
PCI device	Enable device:  Enabled Disabled	Allows you to individually enable or disable each PCI slot
	Device IRQ: None IRQ5 IRQ9 IRQ10 IRQ15 IRQ14	Allows you to individually set an IRQ default for each PCI slot
	Enable master:    Enabled   Disabled	Allows you to enable or disable a PCI device that requires master capability
	Latency timer    Default	Allows you to set the PCI latency timer (in PCI clocks) for each PCI device


Notes
NOTE

Drive type 48 or 49 information is aliased to drive type 2 or 3 when application software does not recognize drive types above 47

Auto-detection of IDE drive parameter is supported in types 2 and 3 and types 48 and 49


Notes
NOTE

Some operating systems do not recognize hard disk drive types above 29.  Auto-detection of IDE drive parameter is supported in types 2 and 3 and types 48 and 49


Notes
NOTE

WB =  Write-Back; WT =  Write-Through


Notes
NOTE

The options listed are applicable to slots 1, 2, and 3


Notes
NOTE

Slot 2 allows IRQ14 instead of IRQ15.  IRQ14 must be used with any PCI/IDE expansion board


Notes
NOTE

Slots 2 and 3 have master capability


NOTE

UPGRADE.EXE, along with the supplied multi-lingual BIOS diskette, allows you to upgrade your computers BIOS to one of the supported language variants


NOTE

You must initially setup your computer with a keyboard


CAUTION

If you select Disabled, make sure your computer is bootable and you have a working copy of SETUP.EXE provided on the supplied System Utilities diskette


NOTE

If your computer is connected to a network, see your System Administrator


Hard Disk Drive 1/Hard Disk Drive 2

This option allows you to disable or configure your computer for the IDE hard disk drives that are installed.  You have the option of manually selecting drive types or using an auto-detect feature.  To use the auto-detect feature, you must first select either drive types 2 and 3 or drive types 48 and 49.  Once selected, you are prompted to execute the auto-detect feature by press the [Enter] key.


Base memory

The main logic board reserves the first 1024 KB of address space for computer use.  Base memory (640 KB) is first assigned to the operating system.  The remaining 384 KB is assigned to shadow main logic board BIOS, video BIOS, or for other computer use.

Base memory can be modified using the 512KB-640KB mapping field.


ROM based setup

This option is often used by educational facilities that have public access to their computers.  Disabling this option prevents unauthorized personnel from changing any computer's configuration parameters.


Parallel port and serial ports

Your computer logically assigns LPTx and COMx names to:

•	Parallel ports in the address order 378h and 278h

•	Serial ports in the address order 3F8h, 2F8h, 3E8h, and 2E8h

This occurs during each boot process.  For example, if you disable the serial port that is assigned to 3F8h as COM1, during the next boot cycle the computer reassigns the name COM1 to the next enabled serial port in the sequence.


Computer boot management

Your computer comes from the factory with options Boot From Diskette A and Boot From Hard Disk C enabled.  This means that each time you turn on or reset your computer it attempts to first boot from diskette A and then from hard disk drive C.  Should you choose to change your computers boot sequence, be aware of the following:

NOTE	If you have a second diskette drive installed, you can choose which one to boot from using the "Exchange Diskette Drives" setup option.

Boot From  Diskette A	Boot From  Hard Disk C	Comments
Disabled	Disabled	Allowed only if booting from a network computer
Enabled	Disabled	Computer only boots from diskette A
Disabled	Enabled	Computer only boots from hard disk drive C


CPU speed

This option determines the speed used by the computer each time you turn it on or reboot it.

•	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.


HDD data transfer method

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


Primary cache

This option lets you enable or disable 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 you might want to disable the primary cache, for example, while using time-dependent software.  In this instance, the computer can operate but not at full potential.


Secondary cache

This option lets you enable or disable 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, you might want to disable the secondary cache, 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.

CAUTION	If your computer contains a Pentium CPU module, ensure that this option is set to Write-Through mode.

NOTE	If you do not have any secondary cache installed, make sure this option is set to disabled.


Cache BIOS ROM

This option allows the computer's BIOS to be cached in the primary cache and secondary cache (if installed).  This increases computer performance because BIOS instructions are executed in cache instead of RAM.


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 you shadow video BIOS ROM, the ROM information is copied into an appropriate area in DRAM.  This increases your computer's performance because the video BIOS instructions are in fast DRAM instead of ROM.


Cache video ROM

This option allows your computer to cache video BIOS information.  Caching your computer's video ROM provides greater performance at the VGA level, however, when running certain application software, conflicts might occur.


Shadow 32K at C8000, D0000, and D8000

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

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


AT bus space

This option allows you to select 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 your operating system can support the memory hole selections prior to enabling this feature.

NOTE	Banyan Vines users must select AT Bus Space E00000h, 1 MB to eliminate memory address conflicts.


512KB-640KB mapping

This 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.


PCI device

This option allows you to configure 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.


BIOS

Basic Input/Output System


flash memory

Allows you to restore or update your computer's BIOS via software.


PCI local bus

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


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.


SETUP.EXE

Digital recommends that you use SETUP.EXE on the System Utilities diskette only when you need to enable the ROM Based Setup option.  Otherwise, use the BIOS Setup utility.


ZIF

Zero Insertion Force.  A ZIF socket allows you to easily upgrade your computer's CPU module by adding a higher performance CPU chip.


Related Material

DECpc LPx 560/566 Installation Card	ER-810WW-IA
DECpc LPx 560/566 User's Guide	ER-810WW-UA
DECpc Pentium/PCI Series CPU Module	ER-780WW-CA


Glossary

512KB-640KB mapping

AT bus space

Base memory

BIOS

Cache BIOS ROM

Cache video ROM

computer battery/real time clock:

CPU module

CPU speed

flash memory

HDD data transfer method

new screws

Parallel port and serial ports

PCI device

Primary cache

Recovery diskette

ROM based setup

Secondary cache

Shadow 32K at C8000, D0000, and D8000

Shadow video ROM

SIMM

static electricity

ZIF


Expanding Your Computer

Introduction - Expanding Your Computer

Tools Needed

Before You Begin

FRU List (Part Numbers)

Computer Components

Expansion Slots

Main Logic Board

Mass Storage Devices

Connecting Diskette and IDE Devices

Installing Additional Computer Memory

Installing Expansion Boards

Installing SIMMs

Removing the 3½-Inch Diskette Drive

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

Removing a 5¼-Inch Device

Removing a CPU Chip

Removing a CPU Module

Removing Expansion Boards

Removing the Filler Panel

Removing the Fan Pipe

Removing the Fan/Speaker Assembly

Removing the Main Logic Board

Removing the Power Supply

Removing SIMMs

Replace Computer Battery/Real Time Clock (RTC)

Unlocking and Removing Outside Cover


Introduction - Expanding Your Computer

The following information will help you install, replace, or modify the following hardware:

•	CPU module

•	Main logic board options:

Memory

Real-time clock (RTC) (computer battery)

•	Optional ISA and PCI local bus expansion boards

•	Mass storage devices


Tools Needed

The following tools are recommended:

•	A Phillips screwdriver

•	An antistatic wrist strap (recommended, but not required)

WARNING	See also	Static Electricity


Before You Begin

Before removing the outside 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 Outside Cover

WARNING	You might injure yourself or damage your computer if you attempt to remove the outside cover before unplugging ac and monitor power cords.

CAUTION	When outside cover is removed, do not insert foreign objects into vent openings of power supply.

1.	Unlock outside cover.

2.	Remove four retaining screws located at rear of computer.

3.	Carefully slide outside cover toward rear of chassis until it clears lip of front bezel.  Carefully lift outside cover from chassis.


Computer Components

Click the Legend icon to see information about specific portions of the illustration.

  LEGEND


Legend - Computer Components

A	Power supply

B	4 ISA and 2 PCI 32-bit local bus expansion slots or
3 ISA and 3 PCI 32-bit local bus expansion slots

C	CPU module

D	Main logic board

E	Front access drive bays

F	3½-inch diskette drive

G	Internal drive bay


Main Logic Board

Click the Legend icon to see information about specific portions of the illustration.

 LEGEND


Legend - Main Logic Board

A	5 V dc power supply connection

B	Diskette drive connection

C	Mouse and keyboard connections

D	Serial port connections

E	3 ISA expansion slots

F	Flash BIOS

G	Dedicated CPU module connector

H	Real-time clock/computer battery

I	Four 36-bit SIMM sockets

J	IDE drive connector

K	2 PCI expansion slots

L	1 ISA and 1 PCI expansion slot (only one slot used at any one time)

M	Parallel port connection

N	Reserved

O	Reserved


metal filler plate


Mass Storage Devices

Your DECpc LPx 560/566 computer contains five mass storage device bays.  The front access bays can hold one 3½-inch diskette drive and three 5¼-inch mass storage devices (i.e., diskette drive, tape backup drive or CD-ROM).

The internal drive bay is not accessible from the front of the chassis and only supports a low-profile 3½-inch hard disk drive.

In most cases, your computer came with a 3½-inch diskette drive installed in the front access 3½-inch drive bay.

See also:	Computer Components


Connecting Diskette and IDE Devices

Click the Legend icon to see detailed information about specific portions of the illustration.

To connect diskette and IDE devices, perform the following:

  LEGEND

1.	Connect supplied ribbon cable to appropriate device as shown.

2.	Connect appropriate power cable to device.

3.	Replace and lock outside cover.

4.	Connect external devices and restore power.

5.	Run BIOS Setup utility  to configure computer.


NOTE

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 "1" at one end of socket or with a number "1" printed on circuit board near one end of socket.  If necessary, refer to the device's documentation for pin 1 orientation.


Legend - Diskette/IDE Connections

A	Power supply
B	Power connections
C	Diskette drive connection
D	IDE drive connection
E	Diskette drive
F	Hard disk drive
G	Optional storage devices


Installing Additional Computer Memory

Adding more memory allows your computer to run larger, more complicated software and run it quicker.

Your computer comes with at least 8 MB of memory.  You can increase this amount up to 128 MB; however, when adding additional memory make sure you:

Install 36-bit SIMMs having an access time of 70 ns or less.

Fill two sockets at a time using the same SIMM size, type and speed.  Supported SIMM sizes:  4 MB, 8 MB, 16 MB, and 32 MB.

Fill banks 0 and 1(marked A on the illustration)  before banks 2 and 3 (marked B on the illustration).

See also:	Installing SIMMs


Installing SIMMs

CAUTION	Use care when installing SIMMs. The retaining clips on the sockets break easily if the SIMM is not seated correctly.

1.	Turn off your computer.

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

3.	Unlock and remove outside cover.

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

Make sure notch is oriented as shown.  Rock SIMM gently until it seats evenly into bottom of socket.  Tip SIMM upright until both retaining clips engage.

5.	Replace and lock outside cover.

6.	Connect external devices and restore power.

7.	Run BIOS Setup utility to configure computer for additional memory.

See also:	Configuring Your Computer


Expansion Slots

Your DECpc LPx 560/566 computer contains seven expansion board slots as shown.  Four of the slots support industry-standard 16-bit ISA expansion boards.  The remaining three expansion slots support 32-bit PCI local bus expansion boards.

Click the Legend icon to see specific information about the expansion slots.

 LEGEND

NOTE	Only one expansion board can reside in slot J6 and J13 at any one time. These slots have to share the expansion slot opening at the rear panel.


Legend - Expansion Slots

J7, J8, J9	ISA	Supports industry-standard 16-bit ISA expansion boards

J6	ISA	Supports industry-standard 16-bit ISA expansion boards

Designated as a shared slot with PCI slot J13 (see NOTE)

J11/PCI slot 1	PCI	Supports non-bus mastering 32-bit PCI expansion boards

Digital recommends that you install your 32-bit PCI video adapter in this slot

J12/PCI slot 2	PCI	Supports bus mastering 32-bit PCI expansion boards

Digital recommends that you install 32-bit bus mastering PCI expansion boards in this slot

J13/PCI slot 3	PCI	Supports bus mastering 32-bit PCI expansion boards

Designated as a shared slot with ISA slot J6 (see NOTE)


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 your computer.

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

3.	Unlock and remove outside cover.

4.	Unscrew and remove the metal filler plate  for the desired expansion slot.

5.	Insert new expansion board into socket.

Push expansion board firmly into place.

6.	Secure expansion board to slot with screw removed in step 4.

7.	Replace and lock outside cover.

8.	Connect external devices and restore power.

9.	Run BIOS setup utility to configure computer.


Replace Computer Battery/Real Time Clock (RTC)

To replace the computer battery/real time clock:

1.	Record computer configuration settings.

2.	Turn off your computer.

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

4.	Unlock and remove outside cover.

5.	Remove battery.

6.	Install new battery.

CAUTION	Make sure pin 1 on battery is correctly aligned with location on socket (see figure).  Incorrect installation can cause faulty computer operation.

7.	Replace and lock outside cover.

8.	Connect external devices and restore power.

9.	Run BIOS Setup utility to reconfigure computer using recorded configuration settings from step 1.

See also:	Configuring Your Computer


Removing the 3½-Inch Diskette Drive

To remove the 3½-inch diskette drive:

1.	Turn off your computer.

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

3.	Unlock and remove outside cover.

4.	Disconnect power and ribbon cables.

Refer to Connecting Diskette and IDE Devices.

5.	Loosen screw securing drive's mounting tray to chassis.

6.	Carefully slide mounting tray toward rear of computer until its locking tabs at bottom clear corresponding chassis slots.  Remove diskette drive and mounting tray.


Removing a 5¼-Inch Device

NOTE	The 3½-inch diskette drive and fan pipe must be removed prior to removing any
5¼-inch device.

To remove a 5¼-inch device from one of the front access drive bays.

1.	Turn off your computer.

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

3.	Unlock and remove outside cover.

4.	Remove 3½-inch diskette drive and fan pipe.

5.	Remove retaining screws from each side of selected drive bay.

6.	Slide 5¼-inch device forward out of drive bay.


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

To remove a 3½-inch mass storage device from the internal drive bay.

1.	Turn off your computer.

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

3.	Unlock and remove outside cover.

4.	Disconnect power and ribbon cables.

5.	Remove four mounting screws.

6.	Pull drive from internal drive bay.


Removing CPU Chip
Removing a CPU Chip

NOTE	Earlier versions of the CPU module did not have a voltage regulator card
(66 MHz version) as shown or jumper card (60 MHz version).

CAUTION	Before installing a new CPU module, update your computer BIOS.  Do not wait to update the BIOS until after installing a new CPU module.

To remove the CPU chip:

1.	Remove the CPU module.

2.	Lift up on the lever to release the CPU.

3.	Remove the CPU, noting its pin 1 location.


pin 1


voltage regulator card


Removing CPU Module
Removing a CPU Module

CAUTION	Before installing a new CPU module, update your computer BIOS.  Do not wait to update the BIOS until after installing a new CPU module.

1.	Turn off your computer.

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

3.	Unlock and remove outside cover.

4.	Remove CPU module retaining bracket.

5.	Carefully remove CPU module from main logic board.


Removing Expansion Boards

To remove an expansion board:

1.	Turn off your computer.

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

3.	Unlock and remove outside cover.

4.	Remove screw from metal filler plate.

5.	Gently pull board outward.


Removing Fan Pipe
Removing the Fan Pipe

To remove the fan pipe:

1.	Turn off your computer.

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

3.	Unlock and remove outside cover.

4.	Remove the 3½-Inch diskette drive.

5.	Remove CPU module retaining bracket.

6.	Unhook plastic fan pipe from card guide.


Removing Fan /Speaker Assembly
Removing the Fan /Speaker Assembly

To remove the fan/speaker assembly:

1.	Turn off your computer.

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

3.	Unlock and remove outside cover.

4.	Remove fan and speaker connections from main logic board.

5.	Press down on the two retaining clips.

6.	Tilt assembly away from front panel and lift out.


Removing Filler Panel
Removing a Filler Panel

To remove the filler panel:

1.	Turn off your computer.

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

3.	Unlock and remove outside cover.

4.	Carefully place screwdriver through hole provided at side of front access drive bay and release plastic locking tabs securing filler panel to front bezel.

5.	Remove and save filler panel.


Removing Main Logic Board
Removing the Main Logic Board

To remove the main logic board:

1.	Turn off your computer.

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

3.	Unlock and remove outside cover.

4.	Remove all connectors.

5.	Remove CPU module retaining bracket and CPU module.

6.	Remove all expansion boards.

7.	Remove fan/speaker assembly.

8.	Remove lower drives.

9.	Loosen screws and slide off standoffs.


Removing Power Supply
Removing the Power Supply

To remove the power supply:

1.	Turn off your computer.

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

3.	Unlock and remove outside cover.

4.	Remove screw securing power on/off cable from chassis.

5.	Pull off Power On/Off button from switch at front panel.

6.	Remove two screws securing power supply to chassis.

7.	Remove four screws securing power supply to rear panel.

8.	Remove power supply from computer.


Removing SIMMs

To remove SIMMs

1.	Turn off your computer.

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

3.	Unlock and remove outside cover.

4.	Press retaining clips out.

5.	Push SIMM down and pull out.


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

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


CPU module

If you plan on replacing your CPU module or upgrading your CPU module's CPU, refer to the appropriate CPU Specifications Booklet supplied with your computer.


new screws

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


SIMM

Single In-line Memory Module


static electricity

Static electricity collects on non-conductors such as paper, cloth, or plastic and can be so small that you cannot see or feel it.

To prevent damage to circuit boards and/or components:

•	Before touching any circuit board or component, touch the metal frame of your computer to discharge any static electricity.

•	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

17-03460-03	Flat cable, 34-pin (diskette drive)
17-03461-06	Flat cable, 40-pin (IDE drive)
21-39125-02	Real-time clock w/RAM clear 24 pin DIP
21-40460-03	CPU, P5 66S (special voltage)
  -ME524-HE	4MB x 2, SIMM, 70ns (54-21225-BA QTY 2)
  -ME534-HE	8MB x 2, SIMM, 70ns (54-21246-EA QTY 2)
  -ME644-FE	16MB x 2, SIMM, 70ns (54-23170-AA QTY 2)
  -ME654-HE	32MB x 2, SIMM, 70ns (54-21277-AA QTY 2)
  -PC77M-CA	1MB VRAM, 70ns, SOIC, VGA memory
  -PCXAL-NA	PS2 keyboard, US
  -PCXAL-NC	PS2 keyboard, Canada/French
  -PCXAL-NE	PS2 keyboard, UK
  -PCXAL-NG	PS2 keyboard, German
  -PCXAL-NP	PS2 keyboard, French
  -PCXAL-NS	PS2 keyboard, Spanish
  -PCXAL-NT	PS2 keyboard, Hebrew
  -PCXAL-NV	PS2 keyboard, Portuguese
  -PCXAL-PI	PS2 keyboard, traditional Chinese
  -PCXAL-PK	PS2 keyboard, Korean
  -PCXAL-QB	PS2 keyboard, Thailand
  -RE23M-E	3.5-inch IDE HDD, 340 MB (single pack -PCXAR-CJ)
  -RE25Q-E	HDD, 540 MB (IDE) (single pack -PCXAR-CL)
  -RX23L-AA	3.5 FDD 1.44 MB
  -RX26 -AA	3.5" FDD, 2.88 MB
  -RX33L-AA	5.25 FDD 1.2 MB
30-37859-01	PS/2 2-button Logitech mouse (single pack -PC7XS-AA)
30-41308-02	enclosure w/cable & panel assembly
30-42250-02	power supply, green
54-22699-01	VGA card, 928/PCI (S3)
54-23512-01	module, PCI/ISA, main board
54-23514-01	jumper card for P5-60 CPU module
54-23516-01	regulator board for P5-66S/66F CPU module
54-23528-01	Pentium CPU module, P5-60
54-23528-02	Pentium CPU module, P5-66F/66S
54-23528-03	Pentium CPU module, w/o P5-60
70-31241-01	enclosure & P/S assembly
70-31622-03	cross bar assembly
70-31627-01	CPU module, P5/60 w/256K cache
70-31627-03	CPU module, P5/60/66 (CPU card w/o CPU)
70-31628-01	CPU assembly (CPU + heat sink, P5 60 Mhz)
70-31628-02	CPU assembly (CPU + heat sink, P5 66 Mhz)
74-44863-29	name plate, P5 60 MHz
74-44863-30	name plate, P5-66 Mhz
74-47813-01	pipe fan
AK-Q5F4A-CA	DECpc LPx 560/566 PCI Series Utility Diskette
AK-Q5F5A-CA	DECpc LPx 560/566 PCI Series Multi-Lingual BIOS diskette
QB-0QRAA-SB	Windows NT software kit
QC-00CAA-HB	QAPlus software kit
QB-MESAA-SA	MS-DOS/Windows software kit (English)
QC-01CAA-HC	S3 928/PCI VGA Utilities & Drivers
QC-01NAA-HC	DECpc LPx Utility (2 diskettes: AK-Q5F4A-CA & AK-Q5F5A-CA)


Problem Solving and 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.

•	Initial Troubleshooting

•	Computer Troubleshooting

•	Disk Drive Troubleshooting

•	Monitor Troubleshooting

See also:	Computer Messages


Initial Troubleshooting

Follow these general procedures to troubleshoot your DECpc LPx 560/566 computer.

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

•	Ensure that all cables and connections are secure.

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

•	Run the diagnostic software.

•	Run the BIOS Setup utility.

•	Contact Digital Services for software or hardware related problems.

See also:	 Configuring Your Computer

NOTE	If you need to return a failed component, pack it in its original container and return it to Digital for service.

If you are a self-maintenance customer, call your Digital service representative for assistance and recommendations.


Computer Troubleshooting

Problem	Possible Cause	Action
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.
	CPU module failure.	Replace CPU module.
	CPU module  jumpers incorrectly set.	Make sure the jumpers are correctly set.
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.
	Monitor cable is incorrectly installed.	Check all monitor connections.
	Video adapter not seated in the expansion slot correctly.	Reseat the video adapter.
	Video adapter has failed.	Replace video adapter.
Computer does not boot from an IDE hard disk drive.	Operating system software is not installed on the IDE hard disk drive. IDE hard disk drive is not correctly formatted or the requested partition does not exist.	Install the appropriate operating system. 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.
	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."
	"Boot from Hard Disk C" is disabled via BIOS Setup utility.	Enable the "Boot from Hard Disk C" via BIOS Setup utility.
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 adapter failure.	Replace the SCSI adapter.
Computer does not boot from an internal SCSI hard disk drive.	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.
	Computer not configured for SCSI hard disk drive operation.	Run the BIOS Setup utility and set Hard Disk 1/Hard Disk 2 to "Not Installed" and IDE Hard Disk Drives options 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.
Computer does not boot from a target diskette drive.	Drive ID incorrectly set.	Make sure the drive ID is correctly set (refer to the documentation supplied with your diskette drive).
	Diskette drive not enabled.	Run the BIOS Setup utility to enable the diskette drive.
	Diskette boot option disabled.	Run the BIOS Setup utility and set Boot From Diskette A to "Enabled."
	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.
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.


Disk Drive Troubleshooting

Problem	Possible Cause	Action
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
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.
.	Diskette write protection enabled.	Run the BIOS Setup utility and set the Diskette Write Protection option to "Disabled."


Monitor Troubleshooting

Problem	Possible Cause	Action
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.
	Power indicator is defective.	Replace power indicator.
No screen display.	Monitor power cable is loose or disconnected.	Secure or reattach the monitor power cable.
	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 brightness and contrast controls are incorrectly set.	Adjust the monitor brightness and contrast controls.
No monitor display while loading Windows video drivers.	Monitor type incorrectly set.	Set the correct monitor type using the appropriate utility.  Refer to an appropriate Video Adapter User's Guide.
Distorted, rolling, or flickering screen display, or wrong/uneven color.	Monitor incorrectly adjusted. Monitor signal cable incorrectly installed.	Adjust accordingly. 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.
	Video jumper incorrectly set.	Set the jumper for color operation.  (See Main Logic Board Jumpers ).
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 an appropriate Video Adapter User's Guide and the documentation supplied with your monitor.
Monitor display not centered while loading Windows video drivers.	Monitor type incorrectly set.	Set the correct monitor type.  Refer to an appropriate Video Adapter User's Guide.


Computer Messages

This appendix lists the DECpc LPx 560/566 computer messages you might see or hear when you turn on power.  The computer messages are grouped as follows:

•	POST and Boot Messages

•	Beep Codes for Fatal Errors

•	Beep Codes for Nonfatal Errors

•	QAPlus Advanced Diagnostics

•	QAPlus Error Messages


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.  The table below lists a general grouping of system messages arranged by the POST countdown number.  In addition, each message is accompanied by text describing the message and in most cases, a recommended solution to the problem.

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

POST Countdown Number	Message Number	Message	Solution
240	0007	No timer tick	Replace main logic board.
200	0001	Shutdown failure	Replace main logic board.
190	0009	Timer 2 failure	Replace main logic board.
180	0010	Keyboard stuck key Keyboard controller Keyboard clock line Keyboard data line Keyboard failure	Check the keyboard connection.  If the connection is secure, the keyboard or keyboard controller might have failed.  replace keyboard.
170	0041	Mouse failure	Check the mouse connection.  If the problem persists, replace the mouse.
160		640 KB base memory    0 KB extended        memory
150	0017	Time-of-day clock stopped	Replace RTC.
100	0018	Invalid configuration information	Run the BIOS Setup utility.
090	0011	Diskette drive failure	Run the BIOS Setup utility.  Check all connections.  If the problem persists, replace the diskette drive.
080	0015	Hard disk controller failure	Run the BIOS Setup utility.  Check all connections.  If the problem persists, replace the controller.
080	0016	Hard disk 0 failure	Run the BIOS Setup utility.  Check all connections.  If the problem persists, replace the hard disk.
060	0021	xxxx0h optional ROM bad checksum = xx	Correct the address conflict. If the problem persists, replace the ROM chip.   .
050	0019	Time-of-day not set	Run BIOS Setup utility and set the time and date.
040	0020	Keyboard is locked	Unlock the keyboard.
020		Enable NMI
010		Enable cache
000		Boot


Beep Codes for Fatal Errors

If the 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.

For example, a failure of bit 3 in the first 64 KB of RAM is indicated by a 2-1-4 beep code (a burst of two beeps, a single beep, and a burst of four beeps).

The table below lists the beep codes and the values the POST writes to I/O port 80h when it encounters a fatal error.  This table lists fatal errors that lock up the computer.  Nonfatal errors that do not lock up the computer are listed in a separate table.

See also:	Beep Codes for Nonfatal Errors

Beep Code	Error Message	Port 80h
1-1-3	CMOS write/read failure	02h
1-1-4	ROM checksum failure	03h
1-2-1	Interval timer failure	04h
1-2-2	DMA failure	05h
1-2-3	DMA page register write/read failure	06h
1-3-1	RAM refresh failure	08h
1-3-3	1st 64 KB RAM chip or data line failure	0Ah
1-3-4	1st 64 KB RAM odd/even logic failure	0Bh
1-4-1	1st 64 KB RAM address line failure	0Ch
1-4-2	1st 64 KB RAM parity failure	0Dh
2-1-1	Bit 0 1st 64 KB RAM failure	10h
2-1-2	Bit 1 1st 64 KB RAM failure	11h
2-1-3	Bit 2 1st 64 KB RAM failure	12h
2-1-4	Bit 3 1st 64 KB RAM failure	13h
2-2-1	Bit 4 1st 64 KB RAM failure	14h
2-2-2	Bit 5 1st 64 KB RAM failure	15h
2-2-3	Bit 6 1st 64 KB RAM failure	16h
2-2-4	Bit 7 1st 64 KB RAM failure	17h
2-3-1	Bit 8 1st 64 KB RAM failure	18h
2-3-2	Bit 9 1st 64 KB RAM failure	19h
2-3-3	Bit A 1st 64 KB RAM failure	1Ah
2-3-4	Bit B 1st 64 KB RAM failure	1Bh
2-4-1	Bit C 1st 64 KB RAM failure	1Ch
2-4-2	Bit D 1st 64 KB RAM failure	1Dh
2-4-3	Bit E 1st 64 KB RAM failure	1Eh
2-4-4	Bit F 1st 64 KB RAM failure	1Fh
3-1-1	Slave DMA register failure	20h
3-1-2	Master DMA register failure	21h
3-1-3	Master interrupt mask register failure	22h
3-1-4	Slave interrupt mask register failure	23h
3-2-4	Keyboard/mouse controller failure	27h
4-2-1	Timer tick interrupt failure	34h
4-2-2	Shutdown failure	35h
4-2-3	Gate A20 failure	36h
4-2-4	Unexpected interrupt in protected mode	37h
4-3-1	RAM failure (above 0FFFFh)	38h
4-3-3	Interval timer 2 failure	3Ah
4-3-4	Time-of-day clock failure	3Bh
4-4-1	Serial port failure	3Ch
4-4-2	Parallel port failure	3Dh
4-4-3	Math coprocessor failure	3Eh


Beep Codes for Nonfatal Errors

If the 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.

For example, a failure of bit 3 in the first 64 KB of RAM is indicated by a 2-1-4 beep code (a burst of two beeps, a single beep, and a burst of four beeps).

The table below lists the beep codes and the values the POST writes to I/O port 80h when it encounters a nonfatal error.  This table lists nonfatal errors that do not lock up the computer. Fatal errors that lock up the computer are listed in a separate table.

See also:	Beep Codes for Fatal Errors

Beep Code	Error Message	Port 80h
3-3-4	Screen memory failure	2Bh
3-4-1	Screen initialization failure	2Ch
3-4-2	Screen retrace failure	2Dh


QAPlus Advanced Diagnostics

To:

•	Receive System Information, select SysInfo menu from the main menu.

•	Locate bad chips and run mouse and keyboard tests, select Interact menu.

•	Edit CMOS, select Setup menu.

•	Run tests on components, select Testing menu.

Default testing is No Pause on Errors/Single Pass/No Peripherals/No Error Logging/Test All Components.  To change default, select settings under the Testing menu before running tests.

See also:	QAPlus Error Messages


QAPlus Error Messages

Component	Messages	Solution
CPU	Arithmetic Function Failed	Reset CPU
	General Functions Failed	Replace CPU
	Exception Interrupt in Protected Mode
	Refresh Failure
	Logic Functions Failed
Hard disk	Butterfly Cylinder Access Test Failed	Low-level format hard disk
	Cylinder 0 Errors	Replace disk
	Random Cylinder Access Failed
	Linear Cylinder Access Failed
Hard drive/controller	Controller Diagnostic Test Failed	Run Setup
	Questionable Controller Card	Check connections
	Hard drives failed	Reset controller
		Replace controller
		Replace disk
Floppy diskette	Media Mismatch	Use known good diskette
	Drive Not Ready	Check size and density of diskette
	Unformatted Media	Close drive door
	Write Protected Media	Remove write protection
		Format diskette
Floppy drive	Floppy Drives Failed	Check connections
		Replace drive
Battery/clock	Clock Stopped	Run Setup
	Invalid Date	Replace battery/clock
	RTC Interrupt Failed
CMOS	CMOS Clock Test Failed	Change time from Setup menu in QAPLUS
Serial port	COM port failed	Check COM device
	Serial Chip Error	Check connections
	Serial Compare Error	Replace COM device
	Serial Timeout Error
Video adapter	Video Failed	Replace video adapter
	Error in Video Buffer


Technical Specifications

These topics provide information about the technical characteristics of the DECpc LPx 560/566 computers.

•	CPU Specifications

•	External Computer Connectors

•	ISA Expansion Slots

•	PCI Local Bus Expansion Slots

•	Power Supply and Input Power

•	Nominal Current Requirements

•	Main Logic Board Jumpers


CPU Specifications

CPU specifications vary depending on the type of CPU module installed in your computer.  Refer to the supplied Pentium PCI Series CPU Module Specifications booklet for further information.

•	Computer Performance Specifications

•	Computer Dimensions

•	Computer Environmental Specifications


Computer Performance Specifications

Attributes	Specification
Bus clock    ISA    PCI	7.5/8.33 MHz 30/33 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 32 MB SIMMs)
ROM BIOS size	128 KB


Computer Dimensions

Dimension	Specification
Width	410 mm (16.14 in)
Length	410 mm (16.14 in)
Height	170 mm (6.093 in)
Weight	11.4 kg (25.1lb)


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)	10% to 90% relative humidity,  maxium wet bulb 40°C  (104°F)
Storage humidity (noncondensing)	5% to 95% relative humidity,  maximum wet bulb 65°C  (149°F)
Altitude   Operating   Nonoperating	2,438 m (8,000 ft) maximum 4,876 m (16,000 ft) maximum
Shipping vibration	IAW Federal Standard 101, method 5019
Nonoperating shock	30 G, 25 ms halfsine


External Computer 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


ISA Expansion Slots

The main logic board contains four ISA expansion slots.  The maximum available +5 V dc current allowable to any expansion slot depends upon the following parameters:

•	Power supply capacity

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

•	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 contains three PCI local bus expansion slots.  These slots support:

•	5 V dc only PCI expansion boards

•	One high-power PCI expansion slot (25 watts)

•	Two standard power PCI expansion slots (up to 15 watts)

•	PCI slots 2 and 3 support bus mastering

•	PCI slot 1 is a non-bus mastering slot only


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.  The table below lists the input power requirements.  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	7.5 A	47 Hz - 63 Hz
220 V ac - 240 V ac	176 V ac - 264 V ac	3.8 A	47 Hz - 63 Hz


Nominal Current Requirements

DECpc LPx 560/566 computers provide the following nominal current requirements:

•	+5 V  22 A

•	+12 V  6.5 A

•	-5 V  0.5 A

•	−12 V  0.5 A


Main Logic Board Jumpers

The table below lists the main logic board jumpers and factory-default settings.  The illustration shows the locations of the main logic board jumper pins.  Note that the square pin of each jumper block is pin 1.

NOTE	The HD Active Display connector (J44) is used for external SCSI/IDE adapters to display hard drive activity.

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.

CAUTION	Do not use the password clear jumper (J32); use instead the clear CMOS jumper (J29).  Using the clear CMOS jumper then sets all your other CMOS settings back to the defaults.

See also:	Main Logic Board Jumper Settings
CPU Module Jumper Settings


Main Logic Board Jumper Settings

(1) = factory default setting

Feature	Description	Setting
Flash ROM upgrade	Enable(1) Disable	J35, jumpered(1) J35, open
Recovery mode	Normal(1) Recovery mode	J34, open(1) J34, jumpered
Display type	Mono(1) Color	J33, open(1) J33, jumpered
Password clear	Normal(1) Password clear (MFG test)	J32, open(1) J32, jumpered
Clear CMOS to default settings	Normal operation(1) Clear CMOS	J29, open(1) J29, jumpered
CPU type	Intel(1) Alpha	J39, open(1) J39, jumpered
Reprogram boot block	Disable Enable(1)	J40, pins 1 & 2 jumpered J40, pins 2 & 3 jumpered(1)


CPU Module Jumper Settings (Pentium)
CPU Module Jumper Settings

Feature	Description	Setting
CPU clock input (default depends on the CPU installed at the factory)	60 MHz 66 MHz	J5, pins 2 and 3 jumpered J5, pins 1 and 2 jumpered


Device Mapping

These Help topics list your computer's device mapping.

CPU Memory Address Map (Full Range)

CPU Memory Address Map (PC Compatibility Range)

CPU I/O Address Map

I/O Address Map

Computer Interrupt Levels

DMA Channel Assignment

PCI Configure Space Address Map


CPU Memory Address Map (Full Range)

Range	Function	Notes
0 KB to 512KB	main memory	PC compatibility range
512KB to 1024KB (1MB)	main memory	PC compatibility range EISA/ISA memory lower limit
1MB to 16-MB	main memory	EISA/ISA memory upper limit
	memory space gap	PCI memory hole (4MB max size)
16MB to 128MB	main memory	Pentium upper limit
128MB to 4GB	PCI memory


CPU Memory Address Map (PC Compatibility Range)

Address Range	Function	Size
0000 to 7FFFF	Main memory	512 KB
80000 to 9FFFF	Main/PCI/ISA memory	128 KB
A0000 to BFFFF	PCI/ISA video buffer memory	128 KB
C0000 to C7FFF	Video memory BIOS	32 KB
C8000 to DFFFF	PCI/ISA card BIOS and buffer memory	96 KB
E0000 to EBFFF	ISA/PCI adapter RAM after POST Used by BIOS Setup during POST	64 KB (48 KB if SCSI BIOS enabled)
EC000 to EFFFF	SCSI BIOS (if enabled)	16 KB
F0000 to FFFFF	Planar BIOS memory	64 KB


CPU I/O Address Map

Range (hexadecimal)	Function
0000 to 0CF7	PCI I/O space
0CF8	Configuration space enable register
0CF9	Turbo and reset control register
0CFA to BFFF	PCI I/O space
C000 to CFFF	PCI configuration space
D000 to FFFF	PCI I/O space


I/O Address Map

Range (hexadecimal)	Function
060 to 064	Keyboard/mouse controller
0F0 to 0FF	Math co-processsor
1F0 to 1F7	IDE controller (if enabled)
278 to 27F	LPT2 (if enabled)
2F8 to 2FF	COM2 (if enabled)
378 to 37F	LPT1 (if enabled)
3BC to 3BE	LPT3 (if enabled)
3F0 to 3F7	Diskette controller (if enabled)
3F8 to 3FF	COM1 (if enabled)


Computer Interrupt Levels

Interrupt Number	Interrupt Source
IRQ1	Keyboard controller
IRQ3	COM2 (if enabled)
IRQ4	COM1 (if enabled)
IRQ6	Diskette drive (if enabled)
IRQ7	LPT1, LPT2, LPT3 (if enabled)
IRQ12	Mouse interrupt
IRQ13	Math co-processor
IRQ14	Hard disk drive (if enabled)


DMA Channel Assignment

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


PCI Configure Space Address Map

Range (hexadecimal)	Function
C0xx	CPU bridge
C1xx	Onboard PCI SCSI (if applicable)
C2xx	ISA bridge
C6xx	PCI slot 1
C7xx	PCI slot 2
C8xx	PCI slot 3