Copyright Digital Equipment Corporation
All rights reserved
DP
PC
Page 2
March 1996
March 1996
The information in this document is subject to change without notice and should not be construed as a
commitment by Digital Equipment Corporation.
Digital Equipment Corporation assumes no responsibility for any errors that might appear in this
document.
The software, if any, described in this document is furnished under a license and may be used or copied
only in accordance with the terms of such license. No responsibility is assumed for the use or reliability of
software or equipment that is not supplied by Digital Equipment Corporation or its affiliated companies.
Restricted Rights: Use, duplication, or disclosure by the U.S. Government is subject to restrictions as set
forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at DFARS
252.227-7013.
Copyright Digital Equipment Corporation
All Rights Reserved
The following are trademarks of Digital Equipment Corporation:
CELEBRIS, and the Digital logo.
The following are third party trademarks:
MS-DOS and Windows and Windows NT and Windows NT Server are trademarks of Microsoft Corp.
Novell and Netware are trademarks of Novell, Inc.
SCO and Open Desktop are trademarks of The Santa Cruz Operation, Inc.
UNIX is a registered trademark of UNIX System Laboratories, Inc.
Pentium® Pro is a registered trademark of Pentium.
All other trademarks and registered trademarks are the property of their respective holders.
Created by:
MCS Logistics Engineering - Nijmegen
Printed in Ireland
Page 3
Digital CELEBRIS XL & XLDP PCTable of Contents
Table of Contents
REVISION HISTORY ................................................................................................................................7
Power Options.........................................................................................................................................33
Setting Bus Speed .................................................................................................................................. 70
Replacing the Voltage Regulator Card (Pentium-Pro)............................................................................ 71
Setting Voltage Regulation..................................................................................................................... 71
Installing Mass Storage Devices............................................................................................................. 72
This was the original release of the Service Maintenance Manual describing the
CELEBRIS XL & XL
This revision of the CELEBRIS XL & XL
incorporates updated configurations and various models that have been added.
DP
PC in its original configuration.
DP
PC Service Maintenance Manual,
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Table of ContentsDigital C ELEBRIS XL & XLDP PC
CAUTION
Digital recommends that only A+ certified engineers attempt to repair this equipment.
All troubleshooting and repair procedures are detailed to support subassembly/module
level exchange. Because of the complexity of the indivual boards and subassemblies, no
one should attempt to make repairs at component level or to make modifications to any
printed wiring board. Improper repairs can create a safety hazard. Any indications of
component replacement or printed wiring board modifications may void warranty or
exchange allowances.
Preface
The Digital CELEBRIS XL & XLDP Service Maintenance Manual is a troubleshooting guide that can be
used for reference when servicing the CELEBRIS XL & XL
Digital Equipment Corporation reserves the right to make changes to the Digital CELEBRIS XL & XL
series without notice. Accordingly, the diagrams and procedures in this document may not apply to the
computer(s) to be serviced since many of the diagnostic tests are designed to test more than one product.
DP
line of PC’s.
DP
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Digital CELEBRIS XL & XLDP PCProduct Description
Chapter 1Product Description
Product Introduction
Digital CELEBRIS XL & XLDP computers are high-performance personal computers featuring the latest
in microprocessor and PCI local bus technology. They can be used as stand-alone computers, as clients, or
as servers in a network environment. Developed using the latest in modular CPU, PCI local bus, PCIbased SCSI technology, and a host of high-performance options, the CELEBRIS XL family offers the most
advanced computers in their class. It also includes Pentium-Pro (P6) models.
♦ PCI local bus technology
♦ Also available as 150 MHz Pentium-Pro processor
♦ Upgradable ZIF (Zero Insertion Force) socket 2 x ZIF 5
♦ 8MB system RAM minimum, expandable to 384MB, 512MB for pentium pro
♦ Alpha AXP upgradable
♦ 256KB asynchronous cache on single pentium processor variants
♦ 512KB asynchronous cache on dual processor variants
♦ Plug and Play
♦ On-board IDE/FDU controller
♦ flash BIOS
♦ On-board PCI SCSI-2 Controller, supports Fast SCSI-2
♦ Two PCI slots, one PCI/ISA interleaved, three ISA expansion slots (one PCI slot used for VGA
adapter)
Choice ofvideo cards:
♦ S3 864 PCI/VGA card, 2MB DRAM, upgradable to 4MB
♦ High performance DIAMOND STEALTH PCI/VGA card, 2MB DRAM, upgradable to 4MB
♦ High performance Matrox Millennium PCI card
♦ 2MB WRAM upgradable to 8MB
* The maximum values when supported by the monitor
Also for pentium pro:
♦ AccelGraphics AG300 dedicated 3D accelerator
♦ 5MB VRAM / frame-buffer
♦ 1280x1024, 65K-16.7M colors, 60-74 Hz
♦ 1024x768, 65K-16.7M colors, 60-74 Hz
♦ 2.5MB DRAM / 16 bit Z-buffer
♦ OpenGL support
♦ Dual Screen support
♦ VGA adapter requiredSee also: http://www.accelgraphics.com
♦ Flash BIOS
♦ “Energy Star” compliant
♦ 300 W power supply
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Digital CELEBRIS XL & XLDP PCProduct Description
Front access bays:
♦ Three 5,25” x 1.6” bay
♦ One 3.5” x 1” bay for floppy
Internal access bays:
♦ One 3.5” x 1.6” bay for disks
Product Models Information
EC = English, French, German, Italian and Spanish.
ED = Danish, Dutch, English, Finnish, French (France excluded), Norwegian and Swedish.
CELEBRIS XL & XLDP Models (FR-8xxWW)
ProductModelHDDMemory Cache Video adapterOptions
CELEBRIS
XL590
FR-873WW-AD -8MB256KBNone
FR-873WW-WH 540MB
SCSI-2
FR-873WW-WN 1GB
SCSI-2
8MB256KBS3 864 Video card
16MB256KB
(Sync.B
)
Diamond Stealth 64 CD-ROM
CELEBRIS
XL590 DP
CELEBRIS
XL5100
CELEBRIS
XL5100 DP
MCS Logistics Engineering - Nijmegen11
FR-874WW-AD -16MB512KB
FR-875WW-AD -16MB256KB
FR-875WW-WN 1GB
SCSI-2
FR-876WW-AD -16MB512KB
16MB256KB
(Sync.B
)
(Sync.B
)
(Sync.B
)
(Sync.B
)
None
None
Diamond Stealth 64 CD-ROM
None
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Product DescriptionDigital C ELEBRIS XL & XLDP PC
CELEBRIS
XL5100
FR-A03WW-AD -16MB256KBNone
FR-A03WW-CN 1GB
SCSI-2
16MB256KBMatrox Millennium 4x SCSI
CD-ROM
CELEBRIS
XL5100 DP
FR-A04WW-AD -16MB512KBNone
FR-A04WW-CN 1GB
SCSI-2
16MB512KBMatrox Millennium 4x SCSI
CD-ROM
CELEBRIS
XL5120
FR-A05WW-AD -16MB256KBNone
FR-A05WW-CN 1GB
SCSI-2
16MB256KBMatrox Millennium 4x SCSI
CD-ROM
CELEBRIS
XL5133
FR-A07WW-AD -16MB256KBNone
FR-A07WW-CN 1GB
SCSI-2
16MB256KBMatrox Millennium 4x SCSI
CD-ROM
CELEBRIS
XL5133 DP
FR-A08WW-AD -16MB512KBNone
FR-A08WW-CN 1GB
SCSI-2
16MB512KBMatrox Millennium 4x SCSI
CD-ROM
CELEBRIS
XL 5166
FR-A11WW-AD -16MB256KBNone
FR-A11WW-CN 1 GB
SCSI-2
16MB256KBMatrox Millennium 4x SCSI
CD-ROM
CELEBRIS XL
5166 DP
FR-A12WW-AD -16MB512KBNone
FR-A12WW-CN 1 GB
SCSI-2
16MB512KBMatrox Millennium 4x SCSI
CD-ROM
CELEBRIS XL & XLDP Models (FR-AxxWW)
ProductModelHDDMemory Cache Video adapterOptions
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Digital CELEBRIS XL & XLDP PCProduct Description
Celebris XL Pentium-Pro models
ProductModelHDDMemory Cache Video adapterOptions
Celebris XL
6150
FR-A31WW-AD -16MB256KBNone
FR-A31WW-CC 1 GB
SCSI-2
FR-A31WW-CN 2 GB
Wide
SCSI
with
Ultra
Wide
SCSI
adapter
16MB256KBMatrox Millennium 4x SCSI
32MB256KB4x SCSI
CD-ROM
CD-ROM
CELEBRIS
XL6180
CELEBRIS
XL6200
FR-A33WW-AD -16MB256KBNone
FR-A33WW-CC 1GB
SCSI-2
FR-A33WW-CN 2GB
Wide
SCSI
with
Ultra
Wide
SCSI
adapter
FR-A34WW-AD -16MB256KBNone
FR-A34WW-CC 1GB
SCSI-2
FR-A34WW-CN 2GB
Wide
SCSI
with
Ultra
Wide
SCSI
adapter
16MB256KBMatrox Millennium 4x SCSI
32MB256KB3D Graphics
Accelrator
16MB256KBMatrox Millennium 4x SCSI
32MB256KB3D Graphics
Accelrator
CD-ROM
4x SCSI
CD-ROM
CD-ROM
4x SCSI
CD-ROM
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Digital CELEBRIS XL & XLDP PCUtilities & Configuration
Chapter 2System Utilities &
Configuration
System Utilities
This chapter describes how to use the utilities and SCSI drivers supplied with the CELEBRIS XL
computer. In most cases, these utilities and drivers are factory installed on the hard disk drive and supplied
on diskettes.
♦ System utilities consisting of:
◊ EPP3NS.EXE − Enables to configure the computer for EPP operation.
◊ Logitech mouse drivers − Enables the computer to operate using a Logitech mouse.
◊ KP.EXE− Enables to set a keyboard and mouse password.
♦ Multilingual BIOS diskette consisting of:
◊ PHLASH.EXE (and associated runtime files).
◊ Binary multilingual BIOS images.
◊ PHLASH**.BAT files, where ** represents the multilingual BIOS. Run this file to upgrade the
BIOS to the desired language.
Refer to the section “PHLASH.EXE” later in this chapter, for additional information.
♦ MS-DOS/Windows, Windows NT, Netware, and OS/2 NCR SCSI Drivers − For additional
information on the directory structure for locating the desired driver file, see the README.TXT file
supplied with the SCSI driver.
♦ NCR SCO UNIX SCSI Drivers − For additional information on the directory structure for locating
the desired driver file, see the README.TXT file supplied with the SCSI driver.
Before Using System Utilities
When not familiar with utility programs and their uses, carefully read and understand this chapter before
attempting to use any of the utilities.
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Restoring WFW Factory-Installed Software
For Windows for Workgroups, run Make Media Master to create backup operating system and
utilities/drivers diskettes.
The Make Media Master program prompts to place diskettes in drive A and then automatically copies the
files to drive A.
To restore all factory-installed software, proceed as follows:
1) With the computer off, put disk 1 for the DOS setup into the diskette drive.
2) Turn the computer on. The computer will boot automatically from the diskette and prompts to install
the other diskettes.
3) When the files have been successfully copied, remove the boot diskette.
4) Reboot the computer.
All system software is now loaded to the out-of-box factory condition.
NOTEIf the computer can still perform basic functions, we recommend that the customer
makes backup diskettes of all important personal files. Restoring all factoryinstalled software will re-format the hard disk and erase all files.
Restoring Win95 Factory-Installed Software
To restore all factory-installed software, proceed as follows:
1) With the computer off, put the WIN 95 Companion CD into the CD drive.
2) Insert the CELEBRIS XL Win 95 Setup/Restore diskette into the diskette drive.
3) Turn the computer on.
The computer boots automatically from the diskette and prompts for confirmation.
4) Enter [Y] to proceed and the system software will then be copied to the hard disk drive.
5) When prompted to do so, insert the CELEBRIS XL Win 95 Setup/Restore diskette into the CD drive,
which will load the Getting Started and related help files and utilities.
6) When the files have been successfully copied, remove the boot diskette and the CD ROM.
7) Reboot the computer.
All system software is now loaded to the out-of-box factory condition.
NOTEIf the computer can still perform basic functions, we recommend that the customer
makes backup diskettes of all important personal files. Restoring all factoryinstalled software will re-format the hard disk and erase all files.
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Digital CELEBRIS XL & XLDP PCUtilities & Configuration
Restoring Windows NT Factory-Installed Software
To restore all factory-installed software, proceed as follows:
1) With the computer off, put the Windows NT OS CD into the CD drive.
2) Insert disk 1 of the Windows NT Setup diskettes into the diskette drive.
3) Turn the computer on.
The computer boots automatically from the diskette and prompts when to insert the other setup
diskettes. Follow the instructions in the Windows NT manual.
4) When prompted to do so, insert the CELEBRIS XL Software Restore CD into the CD drive, which
will load the related help files.
5) When the files have been successfully copied, remove the boot diskette and the CD ROM.
6) Reboot the computer.
All system software is now loaded to the out-of-box factory condition.
NOTEIf the computer can still perform basic functions, we recommend that the customer
makes backup diskettes of all important personal files. Restoring all factoryinstalled software will re-format the hard disk and erase all files.
Using System Utilities
These utilities enable to upgrade or restore the BIOS and set the parallel port to EPP mode (only if the
printer supports EPP mode). If this is the first time using these utility programs, it is recommended to
follow the procedures in the order given.
1) Turn on or reboot the computer. If POST detects an error, refer to Chapter 4,“Troubleshooting” for
possible causes and suggested solutions.
2) If necessary, run PHLASH.EXE to restore or upgrade the BIOS to a new one provided.
3) Run EPP3NS.EXE to configure the computer for EPP operation.
PHLASH.EXE
All computers have BIOS software on a chip on the main logic board. 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.
The computer comes equipped with flash memory. This means that the BIOS can simply be restored by
running the PHLASH.EXE utility. The BIOS can also be upgraded to future releases by running
PHLASH.EXE along with any flash BIOS update diskette if necessary.
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a:dir
QEOIGVH
command prompts 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.
Before Using PHLASH.EXE
Before using PHLASH.EXE to upgrade the BIOS, create a crisis recovery diskette. This diskette can than
be used to reprogram the BIOS in case the flash process built into the computer fails.
Have the following items available:
♦ A blank 3½-inch 1.44MB formatted diskette
♦ A diskette copy of the multilingual BIOS upgrade diskette
Creating a Crisis Recovery Diskette
To create a crisis recovery diskette:
1) Turn on the computer and allow the POST to complete.
2) If POST detects an error refer to Chapter 4, “Troubleshooting” and take the appropriate steps to
correct the problem. After the problem has been resolved, restart the computer.
Insert the multilingual BIOS diskette into the diskette drive and enter:
The entry should show the following files are on the diskette:
Note that there are some additional files as well. Refer to the README file on the diskette for
3) Create an upgrade directory on the hard disk drive. For example, if the hard disk drive is c:>, enter at
4) Copy the files from the multilingual BIOS diskette into the upgrade directory on the hard disk drive.
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
md ugrade.
7) Return to the hard disk drive and copy the files. From the DOS prompt enter: makecrd.
The
MINIDOS.SYS
PHLASH.EXE
MAKEBOOT.EXE
MAKECRD.EXE
additional information.
the DOS prompt: md upgrade.
For example, from the DOS prompt enter: copy a:\upgrade\*.* c:\upgrade\*.*.
enter:
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Digital CELEBRIS XL & XLDP PCUtilities & Configuration
Using the Crisis Recovery Diskette
The crisis recovery diskette must be used only if the BIOS fails or if a BIOS upgrade was unsuccessful.
If the BIOS failed to flash properly or is corrupted in some way, the following sequence of events occur:
1) POST detects an error after a normal boot cycle or a BIOS upgrade.
Messages appear on the monitor screen to inform that the BIOS did not flash properly or has failed.
2) The BIOS in the bootblock memory automatically executes.
3) The computer attempts to find the correct BIOS files to execute the correct boot cycle.
4) The computer beeps several times.
This means the computer cannot properly boot using the BIOS files that were just copied during the
flash update.
5) The diskette drive begins searching for the crisis recovery diskette to restore the BIOS to its previous
known state.
Restore the 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 (J34) to
enabled. Also, make sure that J35 is enabled.
Jumper J34 controls whether the computer is in recovery (Enabled) or normal (Disabled) operation.
Jumper J35 allows for (Enabled) or prevents (Disabled) flashing of the BIOS.
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 (J34) to disabled.
5) Replace and lock the left-side cover and turn the power back on for normal operation.
Upgrading The BIOS
Perform the following steps to update the BIOS in flash memory:
1) Create a crisis recovery diskette if not already done so.
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 Chapter 4,“Troubleshooting” and take the appropriate steps to
correct the problem. After the problem has been resolved, restart the computer.
4) At the MS-DOS prompt, type: \upgrade\phlash
A screen appears on the monitor warning that you are about to erase the computer’s BIOS.
5) Press [Enter] to continue. Else, press [Esc] to cancel.
When pressing [Enter], PHLASH.EXE automatically updates the computer’s BIOS.
After the flashing process completes, the computer automatically reboots itself so changes
immediately take effect.
6) Remove the multilingual BIOS diskette.
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Upgrading the BIOS to a New Language
Perform the following steps to upgrade the BIOS to a new language:
1) Turn on the computer and allow POST to complete.
If POST detects an error refer to Chapter 4,“Troubleshooting” and take the appropriate steps 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: \phlash**
where ** represents the appropriate BIOS language as follows:
GR German
FR French
IT Italian
EN English
For example, to switch to a Spanish BIOS enter: \phlashSP
A screen appears on the monitor warning that you are about to erase the BIOS.
4) Press [Enter] to continue. Else, press [Esc] to cancel.
When pressing [Enter], PHLASH.EXE automatically updates the BIOS.
After the flashing process completes, the computer automatically reboots itself so changes
immediately take effect.
5) Remove the multilingual BIOS diskette.
Using EPP3NS.EXE to Configure an EPP Parallel Port
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 to be connected to the parallel
port and make sure it supports EPP mode. If it does not, there is no need to load this device driver.
If the device does support EPP mode, perform the following:
1) Either copy EPP3NS.EXE to the hard disk drive or locate it on the hard disk drive’s 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 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 will then automatically reboot.
The parallel port is now configured as an EPP port.
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Digital CELEBRIS XL & XLDP PCUtilities & Configuration
Loading SCSI Drivers
Refer to the supplied NCR SCSI Device Management System (SDMS) User’s Guide for information on
loading the following NCR SCSI device drivers:
♦ MS-DOS/Windows
♦ Windows NT
♦ Netware
♦ OS/2
♦ SCO Unix
BIOS Setup Utility
This section provides 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.
When familiar with utility programs and their uses, refer to the appropriate sections in this chapter to setup
or update the computer. Otherwise, carefully read and understand this chapter before attempting to modify
the computer’s configuration settings.
Running the BIOS Setup Utility
The BIOS Setup utility enables to select and permanently store information about the 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.
Use the BIOS Setup utility when experiencing problems with the hard disk or when there is a need to
reconfigure the computer. In addition, the BIOS Setup utility may be necessary to modify the
configuration after adding or removing hardware, or changing computer settings.
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.
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Enables you
to exit Setup
and save
your new
configuration
DEC00664
Figure 2 - 1 BIOS Setup Utility Flow Chart
Manoeuvring through Setup
There are five major headings visible on the initial Setup screen. These headings are: Main, Advanced,
Security, Power and Exit. The following illustration shows a partial listing of topics that are available
under each of these headings.
To run the BIOS Setup utility, perform the following steps:
Turn on your computer
When your computer finishes
POST, Select F2
Use the left/right arrow keys to select
one of the headings shown below.
Use the up/down arrow keys to move
through the list of options
MAINADVANCEDSECURITYPOWEREXIT
Enables you
to choose
options such
as:
-Time
-Date
-Language
-Disk drives
-Video
-Cache
-Shadowing
-Boot options
-Keyboard
features
-Memory
Enables you
to choose
options such
as:
-COM ports
-LPT ports
-Diskette
controller
-IDE controller
-Advanced
chipset
control
-SCSI
controller
-Large disk
access mode
-Plug and Play
Enables you
to choose
options such
as:
-Supervisor
and User
passwords
-Sign on
banner
-Backup
reminder
-Virus
reminder
Enables you
to choose
options such
as:
-Power
management
-IDE hard disk
suspend timer
-Quick
suspend
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Digital CELEBRIS XL & XLDP PCUtilities & Configuration
Updating The Configuration
The following sections list the BIOS Setup utility options that can be updated or modified using the
following menu selections:
♦ Main Enables to set basic computer configuration options (time, date, video, etc.).
♦ Advanced Enables to set advanced features to increase computer performance (COM ports,
♦ Security Enables to set passwords and backup data reminders.
♦ Power Enables to set power saving options to save energy.
♦ Exit Enables to quit and save the changes.
NOTEOnce a supervisor password is set, a user might not be able to change some BIOS
LPT port, etc.).
Setup utility options.
Helpful Hints
Below are some helpful hints when using the BIOS Setup utility:
♦ Several keyboard function keys and numeric keypad keys are assigned to help selecting menus and
sub-menus, options, changing option values and displaying help information. These keys are
displayed at the bottom of the main menu and from the General Help pop-up screen.
♦ Item-specific help is available at anytime 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.
♦ Select “Save Changes & Exit” from the exit menu to save all Setup values.
♦ Select “Discard Changes & Exit” from the exit menu to exit Setup without recording any changes.
♦ Select “Get Default Values” from the exit menu to set all Setup options to their default values.
♦ Select “Load Previous Changes” from the exit menu to restore all CMOS values from the last
session.
♦ Select “Save Changes” from the exit menu to save all selections without exiting Setup.
♦ 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.
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System time
Current timeDisplays the current time.
System date
Current dateDisplays the current date.
Language
English
Español
Français
Deutsch
Italiano
This field only displays the current language of the BIOS. The setting
in Setup can not be changed. Instead, use PHLASH** to change the
BIOS, where ** is the language extension.
The BIOS Setup utility supports only one language per computer.
Diskette
drive A
Diskette
drive B
1.44MB, 3½
2.88MB, 3½
Not Installed
1.2MB, 5¼
720KB, 3½
Sets the size and density of diskette drives.
Autotype fixed
disk
Press [Enter]Press [Enter] to detect and fill in the installed hard disk drive
parameters in the remaining fields.
Type
(1)
1 to 39
User
Selecting 1 to 39 automatically fills in the remaining fields in this
menu.
Selecting User prompts to fill in the remaining fields with the
installed hard disk drive’s parameters.
(2)
Cylinders
(1)
0 to 4095Displays the number of cylinders.
Heads
(1)
1 to 64Displays the number of heads.
Sectors/track
(1
)
0 to 63Displays the number of sectors/track.
Write
precomp
(1)(2)
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.
Video system
EGA / VGA
CGA 80x25
Monochrome
Sets the video controller type.
(1)
These fields are automatically filled in if the computer auto-detected an installed hard disk drive.
(2)
Incorrect settings can cause the computer to malfunction.
Main Menu Options
Menu Fields SettingsComments
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Digital CELEBRIS XL & XLDP PCUtilities & Configuration
Note: The internal cache is internal to the CPU.
The external cache operates in Write-Back (WB) Mode if Enable has
been selected.
The external cache operates in Write-Through (WT) Mode if Enable
has been selected.
For optimal computer performance, keep this setting at Enabled
(WB).
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 shadowing system BIOS ROM, the ROM information is copied
into an appropriate area in DRAM. This increases the performance
because the system BIOS instructions are in fast DRAM instead of
ROM.
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.
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
shadowing video BIOS ROM, the ROM information is copied into an
appropriate area in DRAM. This increases the performance because
the video BIOS instructions are in fast DRAM instead of ROM.
This option enables the video BIOS to be cached in the internal cache
and external cache (if installed). This increases computer
performance as video BIOS instructions can be executed in cache
instead of RAM.
Allows to enable or disable shadowing of individual segments of
ROM to increase computer performance.
Caution: Some option ROMs do not operate properly when
shadowed.
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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.
AT bus space
Disabled
C00000h,
4MB
E00000h,
2MB
F00000h,
1MB
Memory hole not available, upper memory is contiguous.
Sets the memory hole at address C00000 with 4MB memory
available.
Sets the memory hole at address E00000 with 2MB memory
available.
Sets the memory hole at address F00000 with 1MB memory available.
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Digital CELEBRIS XL & XLDP PCUtilities & Configuration
Memory and Cache Options (continued)
Menu Fields SettingsComments
Extended
memory
report
Compatibility
Noncompatibility
Selects the BIOS report mechanism for memory amount.
Select Compatibility when using a conventional operating system.
Select Non-Compatibility for extended memory above 64MB under
Windows NT V3.1.
Boot Options
Menu Fields SettingsComments
Boot sequence
SETUP
prompt
POST errors
Floppy check
Summary
screen
A: only
A: then C:
C: then A:
C: only
Enabled
Disabled
Enabled
Disabled
Enabled
Disabled
Enabled
Disabled
Each time the computer boots, it will load the operating system from
the selected sequence.
Enables or disables the <F2> setup prompt each time the computer
boots.
When Disabled is selected, only the prompt informing you when to
press <F2> to enter Setup is disabled. Setup can still be entered by
pressing <F2> before POST completes.
Enabling this options 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.
Enabling this option causes the computer to verify the diskette type
each time the computer boots.
Disabling this option speeds up the boot process.
Enabling this option causes the computer to display configuration
parameters (in the form of a summary screen) during boot.
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Numlock
Auto
On
Off
Turns Numlock on or off each time the computer boots.
Note: When Auto has been selected, the computer will turn on
Numlock if it detects a numeric keypad.
Key click
Disabled
Enabled
Enables or disables the audible key click feature.
Keyboard
auto-repeat
rate
30/sec
2/sec
6/sec
10/sec
13.3/sec
18.5/sec
21.8/sec
26.7/sec
Sets the number of times a second to repeat a keystroke while holding
the key down.
Keyboard
auto-repeat
delay
1/2 sec
3/4 sec
1 sec
1/4 sec
Sets the delay time after a key is held down before it begins to repeat
a keystroke.
Integrated Peripherals
Menu Fields SettingsComments
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.
Note: Two devices cannot share the same IRQ. Also, choosing
disable makes the parallel port unusable.
Diskette
controller
Enabled
Disabled
Enables or disables the onboard diskette controller.
Exchange
diskette drives
Disabled
Enabled
Enables to logically exchange physical diskette drive designations.
Keyboard Features
Menu Fields SettingsComments
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Digital CELEBRIS XL & XLDP PCUtilities & Configuration
Integrated Peripherals (continued)
Menu Fields SettingsComments
Diskette write
protection
Parallel port
mode
Disabled
Enabled
Compatible
mode
Enables or disables the selected diskette drive’s write protect option.
Enhanced parallel port mode.
Selection based on what EPP version the printer supports.
Only choose a mode that the parallel port device (such as a printer)
supports. Check the parallel port device documentation for this
information.
Enables or disables onboard serial port 1 at the specified address.
Select Auto unless interrupts IRQ4 and/or IRQ3 have been allocated
as a computer resource.
Two devices cannot share the same IRQ. Choosing Disable makes
serial port 1 unusable. When selecting Auto, setup configures COM1
to address = 3F8h and IRQ = 4.
Enables or disables onboard serial port 2 at the specified address.
Select Auto unless having interrupts IRQ4 and/or IRQ3 allocated as a
computer resource.
Two devices cannot share the same IRQ. Choosing Disable makes
serial port 2 unusable. When Auto has been selected, setup
configures COM2 to address = 2F8h and IRQ = 3.
Enables or disables the onboard IDE controller.
Enables or disables the onboard PCI SCSI device.
Enables or disables the main logic board's external SCSI port.
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Menu Fields SettingsComments
CPU to PCI
write buffers
Disabled
Enabled
Enables or disables the CPU to PCI write buffers.
These buffers enable data to be temporarily stored before writing the
data.
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.
PCI parity
Enabled
Disabled
Enables or disables the parity checking feature of the PCI bus.
Enabled gives higher reliability on PCI bus transfers. Disabled may
be required for some PCI options that do not properly support this PCI
feature.
PCI arbiter
priority
(1)
System default
Pure rotating
ISA slot
Onboard SCSI
CPU
PCI slot 1
PCI slot 2
PCI slot 3
Use the BIOS default value. BIOS will select optimal settings based
on the current computer hardware configuration.
The priority rotates for all PCI devices.
ISA slot has the highest priority.
Onboard SCSI has the highest priority.
CPU has the highest priority.
PCI slot 1 has the highest priority.
PCI slot 2 has the highest priority.
PCI slot 3 has the highest priority.
Each PCI device has a latency timer register. This register specifies,
in PCI clocks, the value of the latency timer for a particular PCI
device master.
Advanced Chipset Control Options
NOTEThe following advanced chipset control options should normally stay at their default
values.
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Digital CELEBRIS XL & XLDP PCUtilities & Configuration
Advanced Chipset Control Options (continued)
Menu Fields SettingsComments
PCI slot 1-3
latency timer
Plug & Play
O/S
Large disk
access mode
(1)
The PCI arbiter priority selection for factory installed PCI expansion boards should stay at the factory default settings.
Modification to the default settings can cause computer failure.
Each PCI device has a latency timer register. This register specifies,
in PCI clocks, the value of the latency timer for a particular PCI
device master.
Select Yes when using a Plug & Play operating system. Otherwise,
select No.
Select DOS if MS-DOS has been installed.
Select Other if another operating system has been installed.
A large disk drive constitutes one that has more than 1024 cylinders,
16 heads, or 63 tracks per sector.
Security Options
Menu Fields SettingsComments
Supervisor
password is
User password
is
Set supervisor
password
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Not user
selectable
Not user
selectable
Press [Enter]Enables to set a supervisor password.
Tells whether or not the supervisor’s password is enabled or disabled.
Tells whether or not the user’s password is enabled or disabled.
It is necessary to set the supervisor password when intending to allow
the user password to be used.
When the supervisor later enters his or her password, all user
selectable features are accessible.
Note: Entering Setup with a supervisor password provides full access
to all BIOS Setup utility menus.
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Set user
password
Press [Enter]Enables to set a user password.
This password can only be set 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 (whichever is in effect). This
option is not allowed to change.
Custom sign on banner Enabled/Disabled (whichever is in effect).
This option is not allowed to change.
Note: Entering Setup with a user password restricts access to certain
BIOS Setup utility menus.
Also, this option requires prior setting of the supervisor password.
Password on
boot
Enabled
Disabled
Enables or disables the enter password on boot option.
Note: This option requires prior setting of the supervisor/user
password.
Custom sign
on banner is
Not user
selectable
Tells if 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, you might enter “Welcome to John’s machine”. The
maximum number of characters is 50.
Diskette access
Supervisor
User
Enables to control who has access to diskette drives.
When selecting Supervisor, access to the diskette drive is limited to
the supervisor, who must enter his or her password. When selecting
User, the diskette can be accessed by entering either the supervisor or
the user password.
Whatever setting has been chosen, it only becomes functional if you
have set a Supervisor Password and a User Password (when User has
been chosen for the setting).
Fixed disk
boot sector
Normal
Write protect
Enables to write protect the boot sector on the 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.
Security Options (continued)
Menu Fields SettingsComments
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Digital CELEBRIS XL & XLDP PCUtilities & Configuration
Enables or disables the following power management options.
Allows to disable or enable the hard disk suspend timer feature or
after a set period of disk drive inactivity (approximately 21 minutes),
allows the hard disk drive to spin down its motor to save power. For
IDE hard disk drives only.
After a set period of computer inactivity, the BIOS places the
computer in a suspend state (maximum power savings), that is, the
monitor, hard disk, CPU and fan are shut off.
When a timer for the field has been set, also set Power Management to
Enabled.
Alternately, this option may be disabled.
Enabling this option allows to put the computer in suspend mode by
pressing [Ctrl] + [Alt] + [Esc].
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Digital CELEBRIS XL & XLDP PCService Procedures
Chapter 3Service Procedures
Safety Requirements
WARNING
Static electricity collects on non-conductors such as paper, cloth, or plastic. A static
discharge can be damaging even though you often cannot see or feel it.
The following safety precautions must be observed to insure product and personal safety and prevent
damage to circuit boards and/or components:
♦ Always wear an ESD wrist strap when handling ESD sensitive material and be sure it is properly
connected.
♦ Keep circuit boards and components away from non-conductors.
♦ Keep clothing away from circuit boards and components.
♦ Keep circuit boards in anti-static bags.
♦ Be cautious when AC power is applied when working on an assembly.
♦ Always use an isolation transformer when diagnosing any terminals, monitors or power supplies
when AC power is applied.
♦ Be cautious of very high voltage potentials when working with monitors.
There should be an approved insulating mat (for technician safety) in front of any workbench where
monitors, terminals or power modules are being serviced when power is applied.
NOTEDo NOT wear ESD straps when working on terminals,monitors or power supplies
when AC power is applied. This is to avoid the hazard of electrical shock.
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Recommended Tools
The following tools are needed for servicing Digital PC systems:
♦ Multimeter (4 1/2 digit)
♦ A philips screwdriver
♦ An antistatic wrist strap
Other Materials Needed
Cleaning agent should be an all purpose cleaner that is used in-house.
Special Tools Required
None.
Remedial Diagnostic Test Software
♦ QAPLUS/fe, PC Advanced Diagnostic Software, latest version.
Supplier information:
Diagsoft, Inc.
5615 Scotts Valley Drive, Suite 140
Scotts Valley, California 95066, U.S.A.
Voice: 1-408-438-8247
Fax: 1-408-438-7113
Internet: http://www.diagsoft.com (Diagsoft, Inc. homepage)
Recommended Virus Detection and Cleanup Software
♦ F-PROT, Virus Detection and Cleanup Software, latest version.
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Supplier information:
North America, South America, Australia and New Zealand:
Command Software Systems Inc.
Tel: +1-407-575 3200
Fax: +1-407-575 3026
Refer to the Digital DECpc Bulletin Board Support (telephone number: xx33 92960312) for the latest
information on BIOS upgrades.
Removing The Side Panel
Before removing the side panel, perform the following:
1) Turn off power to all external devices connected to the computer.
2) Turn computer off.
3) Unplug power cord from wall outlet.
4) Disconnect power cord and monitor cord from computer.
WARNING
You might injure yourself or damage the computer if you attempt to remove the side
panel before unplugging the ac and monitor power cords.
To unlock the side panels, turn the chassis key clockwise to a horizontal position (see Figure 3-1).
To remove the side panels, pull each one toward the rear of the computer and then lift away.
DEC00471
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Figure 3 - 1 Unlocking and Removing the Side Panels
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ABCDEFG
ABCDEFG
Computer Components
LegendComponent
A
B
C
D
E
F
G
Power supply
ISA and PCI 32-bit local bus expansion slots
CPU module
Main logic board
3½-inch diskette drive
Three 5¼-inch half-height drive bays
Hidden 3½-inch half-height drive bay
Figure 3 - 2 Model 870WW Computer
Components
Figure 3 - 3 Model A03 WW
Computer Components
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J7, J8, J9
ISASupports industry-standard 16-bit ISA expansion boards.
J6
ISASupports industry-standard 16-bit ISA expansion boards.
Designated as a shared slot with PCI slot J13.
(1)
J11/PCI slot 1
PCISupports bus mastering 32-bit PCI expansion boards.
Digital recommends to install the 32-bit PCI video adapter in
this slot.
J12/PCI slot 2
PCISupports bus mastering 32-bit PCI expansion boards.
Digital recommends to install 32-bit bus mastering PCI
expansion boards in this slot.
J13/PCI slot 3
PCISupports bus mastering 32-bit PCI expansion boards.
Designated as a shared slot with ISA slot J6.
(1)
(1)
Only one expansion board can reside in slot J6 and J13 at any time. These slots have to share the expansion slot
opening at the rear panel.
J11
J12
J13
J6
J7
J8
J9
DEC00167-5
Figure 3 - 4 CELEBRIS XL Expansion Board Slots
Expansion Slots
The CELEBRIS XL computer contains seven expansion board slots (refer to Figure 3 - 4). Four of the
slots support industry-standard 16-bit ISA expansion boards. The remaining three PCI local bus expansion
slots support 32-bit PCI local bus expansion boards. This enables the computer to deliver maximum
performance by using a wider data path for higher computing speed. It also improves the expandability of
the computer.
Expansion SlotSlot TypeDescription
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Main Logic Board Switches/Jumpers
The following table lists the main logic board switches/jumpers and factory-default settings. Figure 3 - 5
shows the locations of the main logic board switch/jumper pins.
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 computer chassis. A static
discharge from your fingers can result in permanent damage to electronic components.
Main Logic Board Jumper Settings
FeatureDescriptionSetting
Flash ROM upgrade
Recovery mode
Display type
Password clear
Clear CMOS to default
settings
Reprogrammed boot block
(1)
Factory default setting.
(2)
Disabling this jumper prevents corruption of the boot block when a boot block update is not required.
(1)
Enable
Disable
(1)
Normal
Recovery mode
(1)
Mono
Color
(1)
Normal
Password clear (MFG test)
Normal operation
(1)
Clear CMOS
(1)(2)
Disable
Enable
J35, jumpered
J35, open
J34, open
J34, jumpered
J33, open
J33, jumpered
J32, open
J32, jumpered
J29, open
J29, jumpered
J40, pins 1 and 2 jumpered
J40, pins 2 and 3 jumpered
(1)
(1)
(1)
(1)
(1)
(1)
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DEC00167-2
J32
J33
J34
J35
J29
J40
Figure 3 - 5 Main Logic Board Jumper Locations
Main Logic Board Jumper Locations
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Computer Memory Configurations
Adding more memory allows the computer to run larger, more complicated software and to run it faster.
The amount of memory the computer supports depends on the type of CPU module that has been installed.
When the Pentium PCI Series CPU module has been installed, the computer will support up to 192MB
using 32MB SIMMs on SIMM banks 0 through 5.
The computer is shipped with at least 8MB of memory. 4MB, 8MB, 16MB, 32MB, or 64MB (future)
single in-line memory modules (SIMMs) may be added.
When installing SIMMs take care of the following:
♦ SIMMs must be installed in pairs. For example, a 32MB SIMM in bank 0 and a 32MB SIMM in
bank 1. Different SIMM sizes can not be mixed within banks.
♦ SIMMs must be the same type, size, and speed.
♦ SIMMs must have an access time of 70 ns or less.
For Celebris XL 6150 Pentium-Pro:
♦ Memory must be upgraded in pairs in non-interleaved mode. (Two memory SIMMs of equal
capacity)
♦ Memory must be upgraded in increments of 4 in interleaved mode (Two pairs of equal capacity
SIMMs)
♦ System auto-detects capability to enter interleaved mode
♦ System auto-detects use of 60 ns memory.
♦ Only those configurations listed below are allowed
♦ Maximum 192MB
Only those configurations listed below are allowed:
The following tables show the recommended memory upgrade paths. When using non-interleaved mode,
upgrade the system memory in pairs, by installing two SIMMs of equal capacity (one on each side of the
CPU module).
Non-Interleaved Modes
Bank 0 (J1-J4)Bank 1 (J8-J11)Total
4MB x 2
4MB x 2 4MB x 2
4MB x 2 8MB x 2
4MB x 216MB x 2
4MB x 232MB x 2
4MB x 264MB x 2
8MB x 2
8MB x 2 8MB x 2
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8MB
16MB
24MB
40MB
72MB
136MB
16MB
32MB
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Service Procedures Digital C ELEBRIS XL & XLDP PC
8MB x 216MB x 2
48MB
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Non-Interleaved Modes (continued)
Bank 0 (J1-J4)Bank 1 (J8-J11)Total
8MB x 232MB x 2
8MB x 264MB x 2
16MB x 2
16MB x 216MB x 2
16MB x 232MB x 2
16MB x 264MB x 2
32MB x 2
32MB x 232MB x 2
32MB x 264MB x 2
64MB x 2
64MB x 264MB x 2
Bank 0 (J1, J2)Bank 1 (J3, J4)Bank 0 (J8, J9)Bank 1 (J10, J11) Total
4MB x 2 4MB x 2
4MB x 2 4MB x 2 4MB x 2 4MB x 2
4MB x 2 8MB x 2 4MB x 2 8MB x 2
4MB x 216MB x 2 4MB x 216MB x 2
4MB x 232MB x 2 4MB x 232MB x 2
4MB x 264MB x 2 4MB x 264MB x 2
8MB x 2 8MB x 2
8MB x 2 8MB x 2 8MB x 2 8MB x 2
8MB x 216MB x 2 8MB x 216MB x 2
8MB x 232MB x 2 8MB x 232MB x 2
8MB x 264MB x 2 8MB x 264MB x 2
16MB x 216MB x 2
16MB x 216MB x 216MB x 216MB x 2
16MB x 232MB x 216MB x 232MB x 2
16MB x 264MB x 216MB x 264MB x 2
32MB x 232MB x 2
32MB x 232MB x 232MB x 232MB x 2
32MB x 264MB x 232MB x 264MB x 2
64MB x 264MB x 2
64MB x 264MB x 264MB x 264MB x 2
When using interleaved mode, install four SIMMs: Install two pairs of equal capacity SIMMs on each side of the CPU
module.
CAUTION
Static electricity can cause damage to components. Before handling any module, make
sure to discharge all static electricity from your body by touching an exposed metal
surface of the chassis.
6) Remove the new memory SIMMs from their anti-static packaging, handling them only by the edges.
7) When installing SIMMs, use the following sequence starting with the sockets closest to the center of
the module (See Figures 3 - 6 and 3 - 7)1 J1 and J8
2 J2 and J9
3 J3 and J10
4 J4 and J11
8) Install the SIMM into the socket at a 45 degree angle, as shown Figure 3 - 6. Rock the SIMM gently
until it is seated in the socket. Tip the SIMM upright until the retaining clips at the ends of the
socket both engage.
CAUTION
Use care when installing SIMMs. The retaining clips on the sockets can break when
seating the SIMM incorrectly.
Installing Single In-Line Memory Modules (SIMMs)
To install a SIMM, perform the following:
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 the left side panel.
3) Unplug the power connector from J6 on the CPU module and remove the module, placing it on an
anti-static surface.
4) Locate the memory sockets on the CPU module and plan the configuration layout. For optimum
performance, use the interleaved mode:
Interleave 1Interleave 0
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5
Figure 3 - 6 Installing a SIMM
DEC00716-
9) Install and secure the CPU module to the main logic board.
10) Reconnect the power cable to J6 of the CPU module.
11) Replace and lock the left side panel.
12) Reconnect the power cord and monitor cord to the back of the computer. Reconnect any external
devices and plug the power cord into the wall outlet.
13) Run the BIOS Setup utility, reboot and press [F2] before POST completes.
14) Select
7EZI'LERKIWERH)\MX
.
The computer reboots and now recognizes the amount of new memory. When returning to Setup, the
Extended Memory field reflects the additional memory
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4
5
3
2
1
0
Main Logic Board SIMM Socket Locations
Bank
Bank
Bank
Bank
Bank
Bank
Figure 3 - 7 Main Logic Board SIMM
Socket Locations
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Figure 3 - 8 Removing a Device from the Upper Drive Bay Area
Part Removal and Replacement Procedures
Removing Devices in the Upper Drive Bay Area
To remove a device from the upper drive bay area perform the following steps:
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 both side panels.
3) Disconnect power and ribbon cables.
4) Remove screws securing device to chassis.
5) Slide device drive out of the upper drive bay.
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CAUTION
Be sure to support the drive bay assembly so that it does not fall and damage circuit
boards.
Figure 3 - 9 Removing the Lower Drive Bay Assembly
Removing Devices in the Lower Drive Bay Area
The lower drive bay area holds two 3½-inch devices, typically a diskette drive and a hard drive. To
remove the devices in the lower drive bay area, remove the entire drive bay assembly from the computer
and then remove the devices from the assy.
Perform the following steps:
1) Turn off the computer. Disconnect any external devices and unplug the power cord from the wall
outlet.
2) Unplug the power cord and monitor cord from the back of the computer.
3) Unlock and remove the left side panel.
4) Remove the cables from the devices in the lower drive bay.
5) Note the position of the cables so that they can be reconnected to the correct devices later.
6) Lift up on the retaining clip at the rear top of the drive bay assembly and slide the assembly to the
rear of the computer (A, Figure 3 - 9).
7) Remove a device by removing the screws on the side and sliding the device out of the lower bay
assembly.
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DEC0060
1
Figure 3 - 10 Removing the Lower Drive Bay Devices
Removing Devices in the Lower Drive Bay Area (continued)
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A
B
C
D
E
F
G
Figure 3 - 11 Removing the Main logic Board
Removing Main Logic Board
To remove the main logic board:
1) Turn off external devices and computer.
2) Disconnect external devices, ac power and monitor power.
3) Unlock and remove side panel.
4) Remove all connectors (A - F).
5) Remove CPU module retaining bracket and CPU module.
6) Remove all expansion boards.
7) Remove mounting screws (G).
8) Carefully rotate the main logic board out, bottom first.
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Removing Fan / Speaker Assembly
To remove the Fan/Speaker Assembly perform the following steps:
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 the left side panel.
3) Remove fan and speaker connections.
4) Depress tabs.
5) Pull Fan/Speaker assembly forward.
Figure 3 - 12 Removing the Fan /
Speaker Assembly (Pentium)
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Figure 3 - 13 Removing the Fan /
Speaker Assembly (Pentium-Pro)
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Removing Power Supply
To remove the power supply:
1) Turn off external devices and computer.
2) Disconnect external devices, ac power, and monitor power.
3) Unlock and remove side panel.
4) Remove metal shield.
5) Remove the upper and lower devices.
Step 1: Remove ON/OFF switch (Figure 3-14).
Step 2: Remove screw from the Powerplug and pull out the Power Plug (Figure 3-15).
Step 3: Remove four screws from the rear, and remove Power Supply (Figure 3-16).
Figure 3 - 15 Removing the power plug
Figure 3 - 14 Removing the
ON/OFF Switch
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Figure 3 - 16 Removing the screws at the rear and Power Supply
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Removing the CPU Module
To Remove the CPU module:
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 the left side panel.
3) Remove the screw that secures the CPU module to the rear panel.
4) Grasping both ends of the CPU module, carefully remove it from the main logic board.
5) Store the CPU module in an anti-static package.
DEC00174-2
Figure 3 - 17 Removing the CPU Module
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CAUTION
Make sure pin 1 on the battery is correctly aligned with the pin 1 location on the socket
(A, Figure 3-18). The pin 1 location on the battery is designated by a white dot in the
lower left corner of the battery. Incorrect installation may cause faulty computer
operation.
A
DEC00167-4
Replacing the Computer Battery/Real Time Clock (RTC)
The computer battery/real time clock (battery) runs the computer clock and retains any setup information
when it is turned off.
To replace the battery, perform the following steps:
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 the left side panel.
3) Remove the battery.
4) Install the new battery.
5) Replace and lock the left side panel.
6) Connect the power cord and monitor cord to the back of the system box.
7) Connect any external devices and plug the power cord into the wall outlet.
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Figure 3 - 18 Installing the Computer Battery/Real-Time Clock
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CAUTION
Static electricity can cause damage to components. Before handling any module, CPU,
or memory chips, make sure to discharge all static electricity from your body by
touching an exposed metal surface of the computer’s chassis.
Upgrading Procedures
Identification
The computer has a CPU processor chip that has an internal speed of 150 MHz or higher speed. The speed
is marked on the large heat sink for this processor chip on the CPU module.
Example: The 6150 CPU module is marked 150 MHz. The model 6150 CPU is 150 MHz; the 6180 CPU is
180 MHz; and the 6200 CPU is 200 MHz.
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Upgrading the CPU module
CELEBRIS XL computers are equipped with Intel Pentium CPU modules. The Pentium CPU and related
high-performance caching circuitry are located on a CPU module which is connected to the main logic
board inside the computer.
Features of these CPU modules include:
♦ Intel Pentium microprocessor operating at one of the following speeds:
-Upgradeable secondary cache memory module
♦ ZIF socket for CPU upgrades
♦ Secondary ZIF socket for future overdrive processor upgrades
Additional CPU modules with more or different features may become available at a later date.
NOTEBoth CPU ZIF sockets will be occupied on CELEBRIS XL computers which support
dual processing.
To install a higher performance CPU:
1) Remove the CPU module.
2) Place the CPU module on an anti-static surface.
3) Lift up on the release lever for the empty ZIF socket.
4) Install the new CPU and return the release lever to its original position.
5) Make sure pin 1 on the CPU is aligned with pin 1 on the ZIF socket (A, Figure 3 - 19). Pin 1 is
located at the notched corner of the CPU (the notched corner can be seen by looking at the CPU from
the pin side).
6) Also, the CPU is keyed so it cannot be installed incorrectly.
7) Set any appropriate jumpers. Refer to “CPU Module Jumper Settings” later in this chapter.
8) Install and secure the CPU module to the main logic board.
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Figure 3 - 19 Installing a New
CPU
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CPU Module Jumper Settings (Pentium modules)
Voltage regulator sockets may not be present on some CPU modules, or may appear different on different
CPU modules.
Factory default settings are given in Bold Italics.
FeatureDescriptionSetting
CPU external clock
CPU core/bus frequency ratio
ReservedFactory use onlyJ8, jumpered
Below settings apply to 166 Mhz versions CPU boards.
The CPU module has a Socket 8 type ZIF socket capable of supporting Intel Pentium® Pro processors.
Contact the Digital sales representative for availability and ordering information for the computer.
To release a higher performance processor:
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 the left side panel.
3) Unplug the power connector from J6 on the CPU module and remove the module, placing it on an
anti-static surface.
4) Lift up on the release lever to release the Pentium® Pro processor chip assembly. Note its pin 1
orientation, located at the notched end of the chip.
DEC00716-2
Figure 3 - 21 Releasing the Pentium® Pro Processor Assembly
NOTEThis illustration is an example only. The CPU module may have its processor chip in
a different orientation, but the procedure for removing it is the same.
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DEC00716-3
Figure 3 - 22 Installing a New Pentium® Pro Processor Assembly
To install a higher performance processor:
1) Install the new Pentium® Pro processor chip assembly (Figure 3 - 22). The arrangement of the pins is
keyed for correct placement.
2) Return the release lever to its original position.
3) Set any appropriate switches. Refer to the following section entitled “CPU Module Component
Locations.”
4) Install and secure the CPU module to the main logic board.
5) Reconnect the power cable to J6 of the CPU module.
6) Replace and lock the left side panel.
7) Reconnect the power cord and monitor cord to the back of the computer. Reconnect any external
devices and plug the power cord into the wall outlet.
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7-3
213
4
CPU Module Component Locations (Pentium-Pro)
Figure 3 - 23 shows the location of the components on the CPU module. E20 is the Pentium® Pro
processor. J1--J4, J8--J9 are sockets for SIMMs. J6 is the power connector. J7 is the voltage regulator
socket. J19--J22 are voltage regulator jumpers. J5 is a switch (shown in Figure 3 - 24) for setting the clock
frequency and the bus speed. The tables that follow Figure 4 list the settings of the switch to set the clock
frequency and the bus speed.
J11
J10
J9
J8
1
E20
J6
J5
J4
J3
J2
J1
Figure 3 - 23 CPU
Module Component
Locations
J19 J20 J21 J22
J7
DEC00717-2
Figure 3 - 24
J5 Switch Location
DEC0071
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CPU clock input6150, 6180
6200
Off
On
60 MHz
66 MHz
NOTEDefault depends on the CPU installed at the factory.
Setting Bus Speed
Bus SpeedClock RatioJ5 pin 2, 3, 4CPU SpeedModel
60 MHz2 x bus speed
3 x bus speed
On, On, On
On, Off, On
120 MHz
180 MHz
6180
4 x bus speed
5 x bus speed
On, On, Off
On, Off, Off
240 MHz
300 MHz
5/2 x bus speedOff, On, On150 MHz
6150
7/2 x bus speed
9/2 x bus speed
11/2 x bus speed
Off, Off, On Off,
On, Off
Off, Off, Off
210 MHz
270 MHz
330 MHz
66 MHz2 x bus speed
3 x bus speed
On, On, On
On, Off, On
132 MHz
198 MHz
6200
4 x bus speed
5 x bus speed
On, On, Off
On, Off, Off
264 MHz
330 MHz
5/2 x bus speed
7/2 x bus speed
Off, On, On Off,
Off, On
166 MHz
231 MHz
9/2 x bus speed
11/2 x bus speed
Off, On, Off
Off, Off, Off
297 MHz
363 MHz
Setting Clock Frequency
FeatureModelJ5 pin 1Clock Frequency
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Replacing the Voltage Regulator Card (Pentium-Pro)
To remove the card, press outward on the tab at the end of the card holder and lift out the card (Figure 3 -
25). To replace the card, press the card in its holder until its tabs click to hold it secure.
Setting Voltage Regulation
There are four jumpers on the CPU module that determine the output of the voltage regulator -- J19, J20,
J21, J22 -- shown in th table below.
For each pair of pins, install a jumper to set them to either an On or an Off condition according to the
following table where:
Off or 1 means install the jumper on the left pin only (pin 1).
On or 0 means install the jumper to connect both pins 1 and 0.
VoltageJ19J20J21J22Model No.
3.3 V0On1Off0On0On
3.1 V*0On0On1Off0On6150
2.9 V0On1Off1Off0On
2.7 V0On0On0On1Off
2.5 V0On1Off0On1Off
*
Default settings for Model 6150 (P6 rev. B0) with Pentium® Pro processor.
DEC00716-4
Figure 3 - 25 Voltage Regulator Card
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DEC00659
DEC00662-
2
Installing Mass Storage Devices
The computer has two drive bay areas. Mass storage devices such as hard disk drives, floppy diskette
drives, CD-ROM drives and tape backup systems are installed in these drive bay areas. The two drive bay
areas are:
♦ Upper drive bay area
This area has room for three 5¼-inch half-height devices. Each drive bay is equipped with a
removable panel to accommodate devices requiring front panel access. The bottom two bays of this
area can be used to mount one full-height drive. The drive rails are removable to accommodate a
full-height device.
♦ Lower drive bay areaThis area has a drive bay assembly that holds a 3½-inch diskette drive (standard on all CELEBRIS
XL computers) and one hidden 3½-inch half-height device that needs no front panel access. This
hidden bay is typically used for mounting the primary 1-inch or 1.6-inch hard disk drive.
To install a device in the upper drive bay area perform the following steps:
1) Remove the front door (Figure 3 - 27).
2) 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.
3) Unlock and remove both side panels.
4) Using a screwdriver from either side, remove the plastic filler panel by pushing it out from inside the
computer (Figure 3 - 26).
Figure 3 - 26 Removing Plastic Filler Panel
from Upper Drive Bay
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Figure 3 - 27 Removing the Front Door
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7) Connect a power cable to the device. Use one of the 4-pin connectors from the power supply.
8) Secure the device with two screws on each side. Use the screws that came with the device.
9) If the device is an internal device that has no front panel, replace the plastic filler panel.
10) Replace and lock both side panels.
11) Connect the power cord and monitor cord to the back of the computer. Connect any external devices
and plug the power cord into the wall outlet.
12) If necessary, run the BIOS Setup Utility (Setup) to reconfigure the
13) for the new storage drives.
NOTEIt isn’t necessary to run Setup when installing a SCSI drive and if the onboard SCSI
controller is already enabled. However, Setup has to be runned if the SCSI
controller is disabled or when installing an IDE drive. Refer to
Chapter 2, “Utilities
and Configuration”
for instructions on running the BIOS Setup utility.
5) Insert the new device into the drive bay from the front (Figure 3 - 28).
6) Connect the data cable to the device.
The data cable is usually a ribbon cable. Figure 3- 29 shows a cabling configuration using two IDE
drives and one diskette drive. Figure 3 - 30 shows a cabling configuration for two SCSI devices.
NOTEFigures 3 - 29 and 3 -30 show sample configurations. Other configurations are
possible.
Also, refer to Appendix A for thermal considerations when using disk drives with
high power consumption.
Be sure the cable is connected with the correct orientation. Most cables and
sockets are keyed so that they cannot be connected backwards. If the cables or
drives are not keyed, pin 1 of the cable has to be connected to pin 1 of the socket.
Pin 1 of the cable is on the edge with the colored stripe. Pin 1 of the socket should
be marked number "1" at one end of the socket or with a number "1" printed on the
circuit board near one end of the socket.
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Figure 3 - 28 Inserting a Device into
Upper Drive Bay
DEC00662-3
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A
Power supply
B
Power connections
C
Diskette drive connection
D
IDE Drive connection
E
Diskette drive
F
Hard drive
G
Optional storage devices
DEC00169
A
B
C
D
E
F
G
Figure 3 - 29 Diskette Drive and IDE Drive Data Cable Connections
Connecting Devices
Diskette Drive and IDE Drive Data Cable Connections
LegendComponent
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SCSI Cable Connections
LegendComponent
A
B
C
D
E
F
Power supply
Power connections
Internal SCSI cable
SCSI connector
SCSI hard disk drive
CD-ROM drive (or other SCSI device)
A
F
B
E
C
D
DEC00182
Figure 3 - 30 SCSI Cable Connections
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Chapter 4Troubleshooting
The following pages provide initial troubleshooting procedures and tables listing specific problems,
probable causes, and recommended actions to take if the computer fails after configuring it or after
installing optional hardware or software.
Refer to the documentation supplied with additional options when experiencing problems with specific
options that have been installed.
Initial Troubleshooting
Follow the general procedure below to troubleshoot the CELEBRIS XL computer series:
1) Press [Ctrl] + [Alt] + [Del]. If the computer fails to boot, turn it off, wait until all hard disk drives
are spun down completely and then turn it back on.
2) If the POST detects an error refer to Chapter 4,“Troubleshooting” and take the appropriate steps to
correct the problem. After the problem has been resolved, restart the computer.
3) Run the BIOS Setup utility.
4) Make sure all necessary changes have been made to the CONFIG.SYS and AUTOEXEC.BAT files.
5) Make sure all necessary video, printer, and application device drivers are properly installed.
6) Ensure that all cables and connections are secure.
7) Run the QAPLUS/fe advanced diagnostic software.
8) If these steps do not identify and/or correct the problem, perform the specific troubleshooting
procedures appropriate to the circumstances.
NOTEIf you need to return a failed component, pack it in its original container and return it
to Digital for service.
Fill in the appropriate fields of the Part Exchange Form with the relevant error information!!
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1-2
Video failure or configuration error
2-2-3
BIOS ROM checksum
3-1-1
Test DRAM refresh
3-1-3
Test keyboard controller
3-4-1
Test 512K base address lines
3-4-3
Test 512K base memory
2-1-2-3
Check ROM copyright notice
2-2-3-1
Test for unexpected interrupts
POST and Boot Messages
The POST displays messages to alert to errors in hardware, software, and firmware or to provide operating
information about the computer.
Each time the POST displays a message on screen, the computer’s speaker beeps twice. If an error occurs
before the monitor is initialized, specific beep codes sound to alert to a problem.
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.
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. During POST, if the video configuration fails or if an external ROM module fails a
checksum test, then the 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 the computer) are
generally the result of a failed main logic board or some other add-on component (SIMM, BIOS, computer
battery, etc.).
Each code represents the number of short beeps that are grouped together.
Beep CodeError Message
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POST and Boot Error Messages (continued)
MessageProblemSolution
Diskette drive A error
Diskette drive B error
Extended RAM Failed at
offset: nnnn
Failing Bits: nnnn
Fixed Disk 0 Failure
Fixed Disk 1 Failure
Fixed Disk Controller failure
Incorrect Drive A type - run
SETUP
Incorrect Drive B type - run
SETUP
Invalid NVRAM media type
Monitor type does not match
CMOS - Run SETUP
Operating system not found
Parity check 1 nnnn
Parity check 2 nnnn
Diskette drive has failed.Run the BIOS Setup utility.
Extended memory failed or
configured incorrectly.
nnnn is a map of the bits at the
RAM address which failed the
memory test.
Hard disk drive and/or controller
failed.
Diskette drive A and/or B not
correctly identified in the BIOS
Setup utility.
NVRAM access failed.Run the BIOS Setup utility and
Keyboard and/or keyboard
controller failed.
Monitor type has been
incorrectly specified.
The operating system cannot be
found on drive A or drive C.
Parity error found in the
computer bus. The BIOS
attempts to locate the address
and displays it on the monitor
screen.
Check all connections. If the
problem persists, replace the
defective diskette drive and/or
drive cable.
Make sure SIMMs are installed
correctly If the problem persists,
replace defective SIMMs.
Run the BIOS Setup utility and
restore all to original values.
If the problem persists, replace the
defective memory.
Run the BIOS Setup utility.
Check all connections. If the
problem persists, replace the
defective hard disk drive and/or
controller.
Run the BIOS Setup utility and
properly identify diskette drive A
and/or B.
restore all settings to original
values. If the problem persists,
replace the defective component.
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.
Run the BIOS Setup utility and set
the correct monitor type.
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.
Run the BIOS Setup utility and
restore all settings to original
values. If the problem persists,
replace the main logic board.
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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.
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.
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POST and Boot Error Messages (continued)
MessageProblemSolution
Shadow RAM Failed at offset:
nnnn
System battery is dead Replace and run SETUP
System cache error - Cache
disabled
System CMOS checksum bad run SETUP
System RAM failed at offset:
nnnn
System timer error
Shadow RAM failed.Run the BIOS Setup utility and
disable failed shadow memory
region.
Battery/real-time clock failed.Replace the battery and then run
the BIOS Setup utility to restore
previous configuration
information.
RAM cache failed.Run the BIOS Setup utility and
restore all settings to original
values. If the problem persists,
replace the defective cache
memory.
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.Run the BIOS Setup utility and
restore all settings to original
values. If the problem persists,
replace the defective memory.
The 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
MessageDescription
nnnn Cache SRAM Passed
Entering SETUP
Extended RAM Passed
nnnn Shadow RAM passed
System BIOS shadowed
nnnn System RAM passed
UMB upper limit segment
address: nnnn
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Where nnnn is the amount of computer cache (in kilobytes) that
tested successfully.
BIOS Setup utility runs.
Where nnnn is the amount of extended memory (in kilobytes) that
tested successfully.
Where nnnn is the amount of shadow RAM (in kilobytes) that tested
successfully.
This indicates that the BIOS has been successfully copied to shadow
RAM.
Where nnnn is the amount of system RAM (in kilobytes) that tested
successfully.
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.
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Video BIOS shadowed
This indicates that the video BIOS has been successfully copied to
shadow RAM.
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Computer Troubleshooting
ProblemPossible CauseAction
No response
when the
computer is
turned on
Main logic board failure.
Main logic board jumpers
incorrectly set.
Replace main logic board.
Set all appropriate jumpers (Refer to “Main logicBoard Jumpers”).
Power is on, but
there is no
screen display
Computer
operates
incorrectly after
installing
optional
expansion
board
Computer
operates
incorrectly after
installing
optional SIMMs
CPU has failed.
Brightness and contrast controls
are not correctly set.
The monitor-off timer has shut
the
monitor off.
Monitor cable is incorrectly
installed.
Incorrect VGA drivers installed.
Video controller has failed.
Expansion board installed
incorrectly.
Did not run ICU to configure
expansion board before
installation.
Expansion board has failed.
SIMMs installed incorrectly.
Did not rerun BIOS Setup utility.
BIOS Setup utility changes not
saved before exiting.
SIMMs have failed.
Replace CPU.
Adjust the brightness and contrast controls.
Press [Shift] to reactivate monitor.
Check all monitor connections.
Install the correct VGA drivers.
Replace the video controller.
Remove expansion board and reinstall.
Run the ICU to properly configure expansion
board and then reboot the computer. Refer to the
supplied ICU documentation.
Remove expansion board and reboot. If computer
boots without errors, replace expansion board.
Remove SIMMs and reinstall.
Rerun BIOS Setup utility.
Rerun BIOS Setup utility and save changes.
Remove SIMMs and reinstall.
Make sure bank 0 is filled with the correct SIMM
size, speed, and type.
Replace SIMMs.
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Computer
operates
incorrectly after
installing
optional
external cache
module
External cache module installed
incorrectly.
External cache module has
failed.
Remove external cache module and reinstall.
Replace external cache module.
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Computer Troubleshooting (continued)
ProblemPossible CauseAction
Computer fails
to retain setup
information
Computer does
not boot from
an IDE hard
disk drive
Computer battery has failed.Replace computer battery.
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.
There is no software on the
requested partition.
IDE hard disk drive jumpers
incorrectly set.
IDE drive type incorrect.
Install the appropriate operating system.
Format the IDE hard disk drive or partition the
IDE hard disk drive using the supplied operating
system software.
Install software on the requested partition.
Refer to the supplied IDE hard disk drive kit
installation instructions.
Run the BIOS Setup utility to identify the correct
drive type.
Loose cables.
Onboard IDE interface disabled.
IDE hard disk is connected to the
wrong IDE connector.
There might be a boot sector
virus.
Hard disk boot sector is missing.
No response to
mouse
commands
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Mouse is password protected.
Mouse is connected to the
keyboard port.
Mouse driver not installed.
Secure all cable connections.
Run the BIOS Setup utility and set the IDE
controller option to “Enabled”.
Connect the boot disk to the inner IDE connector
on the main logic board.
Run appropriate software to detect and remove
viruses (F-PROT).
For DOS, boot from a DOS diskette then enter the
following commands:
c:
cd\dos
fdisk/mbr
Enter the keyboard and mouse password.
Power down the computer and connect the mouse
to the mouse port.
Install the appropriate mouse driver.
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No response to
keyboard
commands
Keyboard is password protected.
Keyboard is connected to the
mouse port.
Enter the keyboard password.
Power down the computer and connect the
keyboard to the keyboard port.
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Computer Troubleshooting (continued)
ProblemPossible CauseAction
Computer does
not recognize an
internal or
external SCSI
device
SCSI device jumpers incorrectly
set.
SCSI cable not terminated.
SCSI device not plugged in.
Refer to the supplied SCSI device kit installation
instructions.
Terminate each end of the SCSI bus.
Check power and SCSI cables.
Computer does
not boot from
an internal
SCSI hard disk
drive
Computer does
not boot from a
target diskette
drive
Terminating resistors not
removed from the SCSI device.
SCSI adapter failure.
SCSI ID conflicts.
Operating system software is not
installed on the SCSI hard disk
drive.
Requested partition does not
exist.
Computer not configured for
SCSI hard disk drive operation.
Drive ID incorrectly set.
Diskette drive not enabled.
Diskette boot option disabled.
Onboard diskette controller
disabled.
Remove terminating resistors.
Replace SCSI adapter.
Set SCSI IDs correct.
Install the appropriate operating system on the
SCSI hard disk drive.
Partition the SCSI hard disk drive and then reload
the operating software.
Run the BIOS Setup utility and set the IDE
controller option to “Disabled”. This disables the
IDE interface.
Note: When both IDE and SCSI hard disk drives
have been installed, the computer uses the IDE
hard disk drive as the boot device.
Make sure the drive ID is correctly set.
Run the BIOS Setup utility to enable the diskette
drive.
Run the BIOS Setup utility and set and set the
proper boot sequence.
Run the BIOS Setup utility and set the diskette
controller option to “Enabled”.
Diskette does not contain startup files.
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Insert a diskette with the correct start-up files.
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Troubleshooting Digital C ELEBRIS XL & XLDP PC
IDE/SCSI hard
disk drive
cannot read or
write
information
Incorrect disk drive jumper
settings.
Loose or incorrectly installed
cables.
IDE drive type incorrect.
Onboard IDE interface disabled.
IDE/SCSI hard disk drive is not
correctly formatted or
partitioned.
Refer to the supplied kit installation instructions.
Make sure all cables are correctly installed.
Run the BIOS Setup utility to identify the correct
drive type.
Run the BIOS Setup utility and set the IDE
controller option to “Enabled”.
Format and partition as required using the
supplied operating system.
Target diskette
drive cannot
read or write
information
Onboard diskette controller
disabled.
Diskette write protection is
enabled.
Run the BIOS Setup utility and set the diskette
controller to “Enabled”.
Run the BIOS Setup utility and set the diskette
write protection to “Disabled”.
Monitor Troubleshooting
ProblemPossible CauseAction
Monitor power
indicator is not
on
Monitor is turned off.
No power at wall outlet.
Power indicator is defective.
Turn on the monitor.
Use another outlet.
Replace the failed component.
No screen
display
Configuration error.
Monitor brightness and contrast
controls are incorrectly set.
Run the BIOS SETUP UTILITY to configure the
computer for VGA operation.
Set the jumper for VGA operation. Refer to
“Main Logic Board Jumpers”.
Adjust the monitor brightness and contrast
controls.
No monitor
display while
loading
Windows video
drivers
Monitor type incorrectly set.Set the correct monitor type. Refer to appropriate
video driver documentation.
Disk Drive Troubleshooting
ProblemPossible CauseAction
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Digital CELEBRIS XL & XLDP PCTroubleshooting
Monitor Troubleshooting (continued)
ProblemPossible CauseAction
Distortedrolling-or
flickering
screen displayor
wrong/uneven
color
Color monitor
displaying
monochrome
Monitor fails to
switch to highresolution mode
Monitor display
not centered
while loading
Windows video
drivers
Monitor incorrectly adjusted.
Monitor signal cable incorrectly
installed.
Computer was turned on before
the monitor was turned on.
Video jumper incorrectly set.
Appropriate high-resolution
video drivers are not installed or
incorrectly installed.
Monitor type incorrectly set.Set the correct monitor type.
Adjust accordingly.
Straighten any bent connector pins and then
reconnect.
Turn off the computer, then turn the computer
back on.
Set the jumper for VGA operation.
Correctly install all appropriate high-resolution
video drivers. Refer to the documentation supplied
with the monitor and/or video drivers.
Refer to appropriate video driver documentation.
CD-ROM Troubleshooting
ProblemPossible CauseAction
Cannot access
the CD-ROM
drive. Error
message reading
drive x.
Power is on but
indicator shows
no activity.
Disc is spinning
but drive is idle.
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No disc in the CD-ROM drive.
Tray open.
No disc or tray is open.
Check cable connections.
Application software not
running.
Insert a disc.
Close the tray.
Insert a disc and close the tray.
Make sure cables are correctly connected.
Run application software.
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Troubleshooting Digital C ELEBRIS XL & XLDP PC
CPU
Arithmetic Function Failed.
General Functions Failed.
Exception Interrupt in Protected
Mode.
Refresh Failure.
Logic Functions Failed.
Reset CPU.
Replace CPU.
Hard disk
Butterfly Cylinder Access Test
Failed.
Cylinder 0 Errors.
Random Cylinder Access Failed.
Linear Cylinder Access Failed.
Low-level format hard disk.
Replace disk.
Hard drive
/controller
Controller Diagnostic Test
Failed.
Questionable Controller Card.
Hard drives failed.
Run Setup, Check connections,
Reset controller, Replace controller,
Replace disk.
Floppy diskette
Media Mismatch.
Drive Not Ready.
Write Protected Media.
Unformatted Media.
Use known good diskette.
Check size and density of diskette.
Close drive door.
Remove write protection.
Format diskette.
CMOS Clock Test Failed.Change time from Setup menu in QAPLUS.
Serial port
COM port failed.
Serial Chip Error.
Serial Compare Error.
Serial Timeout Error.
Check COM device.
Check connections.
Replace COM device.
Replace COM device.
Video adapter
Video Failed.
Error in Video Buffer.
Replace video adapter.
Replace video adapter.
QAPlus/FE Error Messages
ComponentMessagesSolution
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Page 93
Digital CELEBRIS XL & XLDP PCDevice Mapping
Chapter 5Device Mapping
This section provides a series of tables listing mapping and address information related to computer
memory and various main logic board devices (keyboard controller, interrupt controller, DMA controller,
etc.).
The memory and address locations are allocated at the factory to operate within a standard PC
environment. However, due to the number of optional devices and/or expansion boards that are available,
sometimes memory and address locations need to be changed. For example, some network expansion
boards require a specific memory location. If that location is already allocated, a memory conflict results
and the expansion board will not operate as expected. Note that some memory, I/O and interrupt locations
can be changed using the BIOS Setup utility.
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.
CPU Memory Address Map (Full Range)
RangeFunctionNotes
0KB to 512KB
512KB to 1024KB
1MB to 16MB
16MB to 128MB
128MB to 4 GB
(1)
For P54C CPUs, it can expand up to 384MB.
MCS Logistics Engineering - Nijmegen93
(1)
Main memoryPC compatibility range
Main memoryPC compatibility range (EISA/ISA
Keyboard controller
COM2 (if enabled)
COM1 (if enabled)
Diskette drive (if enabled)
LPT1, LPT2, LPT3 (if enabled)
Onboard SCSI (if enabled)
Mouse interrupt
Math co-processor
Hard disk drive (if enabled)
DMA Channel Assignment
ChannelControllerFunction
01
11
21
31
42
52
62
72
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Refresh
Not used
Diskette controller (if enabled)
ECP mode (if enabled)
Cascade DMA
Not used
Not used
Not used
Page 96
Device M appingDigital C ELEBRIS XL & XLDP PC
C0xx
CPU bridge
C1xx
Onboard PCI SCSI (if applicable)
C2xx
EISA/ISA bridge
C6xx
PCI slot 1
C7xx
PCI slot 2
C8xx
PCI slot 3
PCI Configure Space Address Map
Range (hex)Function
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Page 97
Digital CELEBRIS XL & XLDP PCPass / Fail Criteria
Chapter 6Pass / Fail Criteria
As Final Acceptance Test the following tests should be run to meet the Pass/Fail criteria:
1) Successful completion of the POST tests.
2) Successful completion of the following QAPLUS/fe module tests (one pass):
♦ System Board(all tests)
♦ Memory(all tests)
♦ Video(all tests)
♦ Hard Disk(all tests, except: Sequential write/read (destructive test !!) and
♦ Sequential write/random read (destructive test !!))
♦ Floppy Disk(all tests)
♦ Keyboard(all tests)
♦ COM Ports(all tests)
♦ LPT Ports(all tests)
♦ Pointer Device(all tests)
♦ SCSI tests(all tests)
3) Successful bootstrap of the on the computer installed Operating System.
Operating Systems Supported:
◊ MS-DOS version 6.22
◊ Windows for Workgroups v3.11
◊ Windows 95
◊ Windows NT Workstation 3.51
◊ Windows NT Server 3.51
◊ OS/2
◊ SCO UNIX System V Release 3.2.4.2
Remove any software that was put on the hard drive to enable repair of the system before shipping.
When completed carefully clean the outside of the unit with cleaning solution.
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Page 98
Page 99
Digital CELEBRIS XL & XLDP PCService Notes
Appendix AService Notes
This appendix contains the current Service Notes for the CELEBRIS XL product line.
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Page 100
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