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


Service Procedures

Introduction

Tools Needed

Before You Begin

Unlocking  and Removing Side Panel

Components

Component Locations

Expansion Slots

Main Logic Board

Mass Storage Devices

Expansion Brackets

Mass Storage Devices and Expansion Boards

Installing Devices in Upper Drive Bay Area

Installing Devices in the Lower Drive Bay Area

Connecting Diskette and IDE Devices

Connecting SCSI Devices

Installing Expansion Boards

Memory and CPU Upgrades

Installing Additional Computer Memory

Memory Configurations

Installing SIMMs

Upgrading the CPU Module

Upgrading the CPU

Removing Components

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

Removing CPU Module

Removing Expansion Boards

Removing Fan/Speaker Assembly

Removing Lower Drive Bay Assembly

Removing Main Logic Board

Disconnecting Power Supply

Removing On/Off Switch

Removing Power Plug

Removing Power Supply

Removing SIMMs


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 side panel, do the following:

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

2.	Turn computer off.

3.	Unplug power cord from wall outlet.

4.	Disconnect power cord and monitor cord from computer.

	WARNING See also Static Electricity


Unlocking and Removing Side Panel

	WARNING You might injure yourself or damage the computer if you attempt to remove the side panel before unplugging ac and monitor power cords.
1.	Unlock side panel.

Turn key clockwise to unlock side panels.

2.	Slide panel to rear of computer.


Component Locations

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

  LEGEND


Legend - Component Locations

A	Power supply

B	ISA and PCI 32-bit local bus expansion slots

Refer to "Installing Expansion Boards," for specific
slot designations and locations.

C	CPU module

D	Main logic board

E	3½-inch diskette drive

F	Three 5¼-inch half-height drive bays

G	Hidden 3½-inch half-height drive bay


Expansion Slots

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

 LEGEND

The Digital Celebris XL computer contains seven expansion board slots.  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

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

Only one expansion board can reside in slot J4 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(1)
J11/PCI slot 1	PCI	Supports 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(1)
(1)  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.


Main Logic Board

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

 LEGEND


Legend - Main Logic Board

A	Power supply connection

B	Diskette drive connection

C	Mouse and keyboard connections

D	Serial port connections

E	External SCSI and parallel port connections

F	3 ISA expansion slots

G	Flash BIOS

H	Dedicated CPU module connector

I	Real-time clock/computer battery

J	Six 36-bit SIMM (memory) sockets

K	IDE drive connector

L	Internal SCSI connection

M	3.3 V power connection

N	2 PCI expansion slots

O	1 ISA and 1 PCI expansion slot (only one of these slots can be used at any one time)

P	Additional 6-pin PCB power connector

Q	NCR PCI 53C810 SCSI controller chip


Mass Storage Devices

The Celebris XL 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 area
This area has a drive bay assembly that holds a 3½-inch diskette drive (standard on all Digital 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 computer's primary 1-inch or 1.6-inch hard disk drive.

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

See also:	Component Locations
Onboard SCSI Controller
Expansion Brackets


Expansion Brackets

You can install half-height devices in any of the three positions in the upper drive bay area.  To install a 3½-inch device in the upper drive bay, you must first install expansion brackets onto the device.  Expansion brackets will either be supplied with the device or can be purchased from Digital.


Installing Devices in Upper Drive Bay Area

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.	Using a screwdriver from either side, remove the plastic filler panel by pushing it out from inside the computer.

4.	Insert the new device into the drive bay from the front.

5.	Refer to Computer Environmental Specifications for thermal considerations.

See also:	Connecting Diskette and IDE Devices
Connecting SCSI Devices


Installing 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 upgrade the devices in the lower drive bay area, you must:

•	remove the lower drive bay assembly

•	install the new device(s)

To install a new device

1.	Slide the device into the drive bay assembly and secure it with screws.

Do not use the old screws; use the new screws included with the device.  Sometimes the old screws are too long and can damage the internal mechanism of the device.

2.	Replace the lower drive assembly in the computer by sliding it forward until the retaining clip latches.

Make sure the retaining clip has latched to assure drive assembly stability.

3.	Reconnect the data and power cables to the devices.

4.	Replace and lock the left side panel.

5.	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.

6.	Run the BIOS Setup utility if you are installing an IDE drive or if the SCSI controller is disabled.

See also:	BIOS Setup Utility
Connecting Diskette and IDE Devices
Connecting SCSI Devices
Removing Lower Drive Bay Assembly


Connecting Diskette and IDE Devices

  LEGEND

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

The length of the IDE cable requires IDE drives to be placed in drive bay slots 1 and 2 in order for the cable to reach the drive connector.

	CAUTION Do not install a 5.25-inch floppy drive in the top drive bay.  EMI shielding may cause electrical shorts to the etch on the disk.
To connect diskette and IDE devices:

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

2.	Connect appropriate power cable to device.

3.	Replace and lock side panel.

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 an arrow at 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


Connecting SCSI Devices

  LEGEND

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

To connect SCSI devices, perform the following:

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

2.	Connect appropriate power cable to device.

3.	Replace and lock side panel.

4.	Connect external devices and restore power.


Legend - SCSI Connections

A	Power supply
B	Power connections
C	Internal SCSI cable
D	SCSI controller connector
E	SCSI hard disk drive
F	CD-ROM drive (or other SCSI device)


Installing Expansion Boards

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

To install an EISA or PCI local bus expansion board:

1.	Turn off your 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.	Unscrew and remove the Metal Filler Plate .

4.	Insert the new expansion board into the socket in the main logic board.  Push the board firmly into the socket.

5.	Replace the screw to secure the expansion board.

6.	Replace and lock the left side panel.

7.	Reconnect the power cord and monitor cord to the back of the computer.

8.	Reconnect any external devices and plug the power cord into the wall outlet.

See also:	Expansion Slots


Metal Filler Plate


Installing Additional Computer Memory

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

The amount of memory the computer supports depends on the type of CPU module that is installed. Pentium PCI Series CPU modules support up to 192 MB using 32 MB SIMMs on SIMM banks 0 through 5.  In the future, when 64 MB SIMMs are supported, Pentium PCI computers will support 384 MB of memory using these future 64 MB SIMMs.

Celebris XL computers are shipped with at least 8 MB of memory.  You can add 4 MB,
8 MB, 16 MB, 32 MB, or 64 MB (future) single in-line memory modules (SIMMs).  However, when doing so:

SIMMs must be installed in pairs.  For example, a 32 MB SIMM in bank 0 and a 32 MB SIMM in bank 1.  You cannot mix SIMM sizes within banks.

SIMMs must be the same type, size, and speed.

SIMMs must have an access time of 70 ns or less.

See also:	Main Logic Board
Installing SIMMs
Removing SIMMs
Memory Configurations


Memory Configurations

Bank 0	Bank 1	Bank 2	Bank 3	Bank 4	Bank 5	Total
4 MB	4 MB					8 MB
8 MB	8 MB					16 MB
4 MB	4 MB	8 MB	8 MB			24 MB
8 MB	8 MB	8 MB	8 MB			32 MB
16 MB	16 MB					32 MB
4 MB	4 MB	8 MB	8 MB	8 MB	8 MB	40 MB
4 MB	4 MB	16 MB	16 MB			40 MB
8 MB	8 MB	8 MB	8 MB	8 MB	8 MB	48 MB
8 MB	8 MB	16 MB	16 MB			48 MB
4 MB	4 MB	8 MB	8 MB	16 MB	16 MB	56 MB
16 MB	16 MB	16 MB	16 MB			64 MB
32 MB	32 MB					64 MB
4 MB	4 MB	32 MB	32 MB			72 MB
4 MB	4 MB	16 MB	16 MB	16 MB	16 MB	72 MB
8 MB	8 MB	16 MB	16 MB	16 MB	16 MB	80 MB
8 MB	8 MB	32 MB	32 MB			80 MB
4 MB	4 MB	8 MB	8 MB	32 MB	32 MB	88 MB
8 MB	8 MB	8 MB	8 MB	32 MB	32 MB	96 MB
16 MB	16 MB	16 MB	16 MB	16 MB	16 MB	96 MB
16 MB	16 MB	32 MB	32 MB			96 MB
8 MB	8 MB	16 MB	16 MB	32 MB	32 MB	112 MB
32 MB	32 MB	32 MB	32 MB			128 MB
16 MB	16 MB	16 MB	16MB	32 MB	32 MB	128 MB
4 MB	4 MB	32 MB	32 MB	32 MB	32 MB	136 MB
8 MB	8 MB	32 MB	32 MB	32 MB	32 MB	144 MB
16 MB	16 MB	32 MB	32 MB	32 MB	32 MB	160 MB
32 MB	32 MB	32 MB	32 MB	32 MB	32 MB	192 MB
32 MB	32 MB	32 MB	32 MB	64 MB	64 MB	256 MB
64 MB	64 MB	64 MB	64 MB			256 MB
4 MB	4 MB	64 MB	64 MB	64 MB	64 MB	264 MB
8 MB	8 MB	64 MB	64 MB	64 MB	64 MB	272 MB
16 MB	16 MB	64 MB	64 MB	64 MB	64 MB	288 MB
32 MB	32 MB	64 MB	64 MB	64 MB	64 MB	320 MB
64 MB	64 MB	64 MB	64 MB	64 MB	64 MB	384 MB
64 MB SIMMs are a future option


Installing SIMMs

To install a SIMM, perform the following:

1.	Turn off your 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.

NOTE
You might find it easier to remove the CPU module when installing SIMMs.

3.	Install the SIMM into the socket at a 45 degree angle (A, Figure 4-6).

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

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

5.	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.

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

7.	Select Save Changes and Exit.

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

See also:	BIOS Setup Utility
Memory Configurations


Upgrading the CPU Module

Installing a higher-performance CPU module increases the capabilities of the computer.  Modular CPU architecture also allows for convenient upgrades as technology becomes more advanced.

To upgrade your CPU module:

NOTE
The computer's BIOS recognizes any supported CPU module.  However, If you need to update your computer's BIOS, you must do so before installing a new CPU module.  Refer to Upgrading Your Computer's BIOS for specific information and procedures.

1.	Remove the CPU module's retaining bracket.

2.	Grasping both ends of the CPU module, carefully remove it from the main logic board.

3.	Place the CPU module in an anti-static package.

4.	For jumper locations, refer to the appropriate supplied CPU Module Specifications Booklet supplied with your computer.

5.	Install the new CPU module.

6.	Secure the CPU module to the main logic board using the previously removed retaining bracket.

See also:	Removing CPU Module
Upgrading Your Computer's BIOS


Upgrading the CPU

The CPU module is equipped with a ZIF socket.  The socket is capable of supporting faster OverDrive CPUs (including future 3.3 V dc CPU technology).

To install a higher performance CPU:

1.	Remove the CPU module.

 Releasing CPU

2.	Place the CPU module on an anti-static surface.

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

Remove the CPU noting its pin 1 location.

 Replacing CPU

4.	Install the new CPU.

Make sure pin 1 on the CPU is aligned with pin 1 on the ZIF socket.  Pin 1 is located at the notched end of the CPU (A).

5.	Return the release lever to its original position.

6.	Install and secure the CPU module to the main logic board.


{bmc DEC175_2.BMP}


{bmc DEC175_3.BMP}


Removing CPU Module

NOTE
The computer's BIOS recognizes any supported CPU module.  However, If you need to update your computer's BIOS, you must do so before installing a new CPU module.  Refer to Upgrading Your Computer's BIOS for specific information and procedures.

1.	Turn off external devices and computer.

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

3.	Unlock and remove left side panel.

4.	Remove CPU module retaining bracket.

5.	Carefully remove CPU module from main logic board.

See also:	Upgrading the CPU Module
Upgrading Your Computer's BIOS


Removing Expansion Boards

To remove an expansion board:

1.	Turn off external devices and computer.

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

3.	Unlock and remove left side panel.

4.	Remove screw from retaining bracket.

5.	Gently pull board outward.


Removing Fan/Speaker Assembly

1.	Remove fan and speaker connections.

2.	Depress tabs.

3.	Pull forward.


Removing Lower Drive Bay Assembly

To remove the lower drive bay assembly:

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 cables from the devices in the lower drive bay.

Note the position of the cables so that you can reconnect them to the correct devices later.

4.	Depress the retaining clip at the rear top of the drive bay assembly and slide the assembly to the rear of the computer.

	CAUTION:  Be sure to support the drive bay assembly so that it does not fall and damage circuit boards.
5.	Remove a device by removing the screws on the side and sliding the device out of the lower bay assembly.


Removing Main Logic Board

  LEGEND

1.	Remove all connectors (A-F).

2.	Remove all expansion boards.

3.	Remove fan/speaker assembly.

4.	Remove lower drives.

5.	Loosen screws (G) and slide off standoffs.


Legend - Main Logic Board Connectors

A	Mouse connector

B	Keyboard connector

C	Diskette drive cable connector

D	Hard disk cable connector

E	Power connectors

F	Speaker connector

G	Anchoring screw (1 of 8)


Disconnecting Power Supply

Before removing the power supply from the computer, you must be sure that the on/off switch and power plug have been removed.

Removing On/Off Switch

Removing Power Plug

Removing Power Supply


Removing On/Off Switch

This step must be performed prior to removing the power supply.

1.	Remove CPU module.

2.	Remove connections.

3.	Remove upper and lower drives.

4.	Remove on/off switch.

Continue preparing to remove the power supply by
Removing Power Plug

See also:	Removing CPU Module
Removing Expansion Boards
Removing Fan/Speaker Assembly
Removing Lower Drive Bay Assembly


Removing Power Plug

This step must be performed prior to removing the power supply.

1.	Be sure that the on/off switch has been removed.

2.	Remove screw from power plug.

3.	Pull out power plug.

You are now ready to remove the power supply itself.
Removing Power Supply


Removing Power Supply

1.	Be sure that the on/off switch and power plug have been removed.

2.	Remove four screws from the rear.

3.	Slide power supply forward and out.

See also:	Removing On/Off Switch
Removing Power Plug


Removing SIMMs

To remove SIMMs

1.	Turn off external devices and computer.

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

3.	Unlock and remove side panel.

4.	Press retaining clips out.

5.	Push SIMM down and pull out.


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

To replace the computer battery/real time clock:

1.	Record computer configuration settings.

2.	Turn off external devices and computer.

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

4.	Unlock and remove left side panel.

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 left side panel.

8.	Connect external devices and restore power.

9.	Run BIOS Setup utility to configure computer.

See also:	BIOS Setup Utility


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

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


CPU 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.  A static discharge can be damaging even though you cannot see or feel it.

To prevent damage to circuit boards and/or components:

•	Before touching any circuit board or component, 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

12-41670-01	SCSI terminator

12-41706-02	Heat sink

17-03460-03	Flat cable, 34 POS

17-03461-03	Flat cable, 40 POS

17-03895-01	Flat cable, 50 POS

21-39125-02	RTC battery backed up CMOS

21-40735-01	CPU P54C 60/90 B1 stepping

21-43650-01	CPU P54CM 60/90

21-43651-01	CPU P54C 60/90 B3 stepping

21-43651-02	CPU P54C 60/90 B5 stepping

21-43652-02	CPU P54C-100 VRE

21-43652-03	CPU P54C-100 VRE B5 stepping

30-41069-03	Power supply, 300W green

30-4329-01	VGA card, 964 Diamond Stealth

54-23518-01	VGA card 864 PCI

54-23532-01	Cache SIMM 256K STD.

54-23588-01	Cache SIMM 256K BURST.

54-23588-02	Cache SIMM 512K BURST.

54-23606-01	Sigma main module

54-23982-01	P54C/CM CPU module, W/ P54C-90 CPU B3

54-23982-02	P54C/CM CPU module, W/P54C-90 B1 & P54CM CPUs

54-23982-03	P54C/CM CPU module, W/P54C-100VRE CPU

54-23982-04	P54C/CM CPU module, W/P54C-100 & P54CM-100 CPUs

54-23982-05	P54C/CM-90 CPU module, W/O CPU
(for P54C-90 CPU series only)

54-23982-06	P54C/CM-100 CPU module, W/O CPU
(for P54C-100 CPU series only)

54-24000-01	Jumper board, for P54C/CM 3.3V

54-24002-01	Adaptor board, for P54C 3.45V

70-31242-01	CPU fan/speaker assembly

70-31628-04	CPU assembly P54C 60/90

70-31628-05	CPU assembly, P54CM 60/90

70-31628-06	CPU assembly, P54C 60/90

70-31628-06	CPU assembly, P54C 60/90

70-31628-07	CPU assembly, P54C-100 VRE

70-31628-07	CPU assembly, P54C-100 VRE

74-47735-01	Fan pipe


Troubleshooting

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

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

Problem Solving and Troubleshooting

Initial Troubleshooting

Computer Troubleshooting

Disk Drive Troubleshooting

Monitor Troubleshooting

Messages

POST and Boot Messages

POST and Boot Error Messages

POST and Boot Informational Messages

Beep Codes

QAPlus/PRO Advanced Diagnostics


Initial Troubleshooting

Follow these general procedures to troubleshoot your Celebris XL Computer.

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

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

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

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

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

•	Ensure that all cables and connections are secure.

•	Run the diagnostic software.

See also:	BIOS Setup Utility


Computer Troubleshooting

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

 	NO RESPONSE WHEN THE COMPUTER IS TURNED ON.

 	POWER IS ON, BUT THERE IS NO SCREEN DISPLAY.

 	COMPUTER OPERATES INCORRECTLY AFTER INSTALLING OPTIONAL EXPANSION BOARD.

 	COMPUTER OPERATES INCORRECTLY AFTER INSTALLING OPTIONAL SYSTEM MEMORY (SIMMS).

 	COMPUTER OPERATES INCORRECTLY AFTER INSTALLING SECONDARY CACHE MEMORY ON THE CPU MODULE.

 	COMPUTER FAILS TO RETAIN SETUP INFORMATION.

 	COMPUTER DOES NOT BOOT FROM AN IDE HARD DISK DRIVE.

 	COMPUTER DOES NOT RECOGNIZE AN INTERNAL OR EXTERNAL SCSI DEVICE.

 	COMPUTER DOES NOT BOOT FROM AN INTERNAL SCSI HARD DISK DRIVE.

 	COMPUTER DOES NOT BOOT FROM A TARGET DISKETTE DRIVE.

 	NO RESPONSE TO KEYBOARD COMMANDS.

 	NO RESPONSE TO MOUSE COMMANDS.

 	OPERATING SYSTEM REPORTS SEVERAL PARITY ERRORS.


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 failed.

Replace CPU module.

•	Power supply failed.

Replace power supply.

•	Video card failed.

Replace video card.


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 card not seated in the expansion slot correctly.

Reseat the video card.

•	Incorrect VGA drivers installed.

Install the correct VGA drivers.

•	Video card failed

Replace main logic board.

•	Monitor failed.

Replace monitor.


COMPUTER OPERATES INCORRECTLY AFTER INSTALLING OPTIONAL EXPANSION BOARD.

•	Expansion board installed incorrectly.

Remove expansion board and reinstall.

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

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

•	Expansion board failure.

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


COMPUTER OPERATES INCORRECTLY AFTER INSTALLING OPTIONAL SYSTEM MEMORY (SIMMS).

•	Did not rerun BIOS Setup utility.

Run BIOS Setup utility.

•	BIOS Setup utility changes not saved before exiting.

Run BIOS Setup utility and save changes.

•	SIMMs installed incorrectly.

Remove SIMMs and reinstall.

•	SIMMs have failed.

Replace SIMMs.


COMPUTER OPERATES INCORRECTLY AFTER INSTALLING SECONDARY CACHE MEMORY ON THE CPU MODULE.

•	Secondary cache memory installed incorrectly.

Remove secondary cache memory and reinstall.

•	Secondary cache memory chip(s) have failed.

Replace faulty secondary cache memory chip(s).


COMPUTER FAILS TO RETAIN SETUP INFORMATION.

•	Computer battery has failed.

Replace computer battery (RTC).

•	CMOS clear jumper (J29) enabled.

Disable CMOS clear jumper (J29).


COMPUTER DOES NOT BOOT FROM AN IDE HARD DISK DRIVE.

•	IDE drive type incorrect.

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

See drive type label on drive or consult drive documentation.

•	Loose cables.

Secure all cable connections.

•	Onboard IDE interface disabled.

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

•	Hard disk boot sector is missing.

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

c:
cd\dos
fdisk/mbr

•	There might be a boot sector virus.

Run anti-virus software.

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

Install the appropriate operating system.

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

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

•	There is no software on the requested partition.

Install software on the requested partition.

•	IDE hard disk drive jumpers incorrectly set.

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


COMPUTER DOES NOT RECOGNIZE AN INTERNAL OR EXTERNAL SCSI DEVICE.

•	SCSI device jumpers incorrectly set.

Refer to the supplied SCSI device kit installation instructions.

•	SCSI ID conflicts.

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

•	Terminating resistors not removed from the SCSI device.

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

•	Loose SCSI cable.

Secure all cable connections.

•	SCSI cable not terminated.

Terminate each end of the SCSI cable.

•	SCSI device not plugged in.

Check power and SCSI cables.

•	Hard disk boot sector is missing.

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

c:
cd\dos
fdisk/mbr

•	There might be a boot sector virus.

Run anti-virus software.

•	Onboard SCSI controller disabled.

Run the BIOS Setup utility and enable the onboard SCSI controller option.

•	External SCSI devices disabled.

Run the BIOS Setup utility and enable the external SCSI device option.

•	SCSI controller failure.

Replace main logic board.


COMPUTER DOES NOT BOOT FROM AN INTERNAL SCSI HARD DISK DRIVE.

•	Computer not configured for SCSI hard disk drive operation.

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

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

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

Install the appropriate operating system.

•	Requested partition does not exist.

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

•	SCSI boot hard disk drive not formatted.

Format the SCSI hard disk drive.


COMPUTER DOES NOT BOOT FROM A TARGET DISKETTE DRIVE.

•	Incorrect diskette drive type.

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

•	Diskette boot option disabled.

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

•	Diskette might not be bootable.

Use a bootable diskette.

•	Diskette does not contain start-up files.

Insert a diskette with the correct start-up files.

•	Diskette drive is empty.

Insert a diskette that contains an operating system.

•	Diskette is worn or damaged.

Try another diskette.

•	Loose cables.

Secure all cable connections.


NO RESPONSE TO KEYBOARD COMMANDS.

•	Keyboard is password protected.

Enter the keyboard password.

•	Keyboard is not connected.

Power down the computer and connect the keyboard.

•	Keyboard is connected to the mouse port.

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

•	Computer operation halted.

Reboot computer.


NO RESPONSE TO MOUSE COMMANDS.

•	Mouse is password protected.

Enter the keyboard and mouse password.

•	Mouse is not connected.

Power down the computer and connect the mouse.

•	Mouse is connected to the keyboard port.

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

•	Mouse driver not installed.

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

•	Computer operation halted.

Reboot computer.


OPERATING SYSTEM REPORTS SEVERAL PARITY ERRORS.

•	You might have an option that does not support PCI parity checking.

Check with the appropriate service representative who might instruct you to disable PCI parity.  If so, run Setup to disable PCI parity.


Disk Drive Troubleshooting

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

 	IDE/SCSI HARD DISK DRIVE CANNOT READ OR WRITE INFORMATION.

 	TARGET DISKETTE DRIVE CANNOT READ OR WRITE INFORMATION.


IDE/SCSI HARD DISK DRIVE CANNOT READ OR WRITE INFORMATION.

•	Incorrect disk drive jumper settings.

Refer to the supplied kit installation instructions..

•	Loose or incorrectly installed cables.

Make sure all cables are correctly installed.

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

Format and partition as required using the supplied operating system

•	IDE drive type incorrect.

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

•	Onboard IDE or SCSI interface disabled.

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


TARGET DISKETTE DRIVE CANNOT READ OR WRITE INFORMATION.

•	Diskette is not formatted.

Format the diskette.

•	Diskette is worn or damaged.

Try another diskette.

•	Diskette is write-protected.

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

•	Diskette drive is empty.

Insert a diskette.

•	Onboard diskette controller disabled.

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

•	Diskette write protection enabled.

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


Monitor Troubleshooting

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

 	MONITOR POWER INDICATOR IS NOT ON.

 	NO SCREEN DISPLAY.

 	NO MONITOR DISPLAY WHILE LOADING WINDOWS VIDEO DRIVERS.

 	DISTORTED, ROLLING, OR FLICKERING SCREEN DISPLAY, OR WRONG/UNEVEN COLOR.

 	COLOR MONITOR DISPLAYING MONOCHROME.

 	MONITOR FAILS TO SWITCH TO HIGH-RESOLUTION MODE.

 	MONITOR DISPLAY NOT CENTERED WHILE LOADING WINDOWS VIDEO DRIVERS.


MONITOR POWER INDICATOR IS NOT ON.

•	Monitor is turned off.

Turn on the monitor.

•	Power cord is not connected.

Connect the power cord to the computer.

•	No power at wall outlet.

Use another outlet.

•	Power indicator is defective.

Replace power indicator.


NO SCREEN DISPLAY.

•	Configuration error.

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

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

•	Monitor power cable is loose or disconnected.

Secure or reattach the monitor power cable.

•	Monitor brightness and contrast controls are incorrectly set.

Adjust the monitor brightness and contrast controls.

•	Video card failed.

Replace the video card.


NO MONITOR DISPLAY WHILE LOADING WINDOWS VIDEO DRIVERS.

•	Monitor type incorrectly set.

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

•	Wrong Windows driver loaded.

Load the correct video driver.


DISTORTED, ROLLING, OR FLICKERING SCREEN DISPLAY, OR WRONG/UNEVEN COLOR.

•	Monitor incorrectly adjusted.

Adjust accordingly.

•	Monitor signal cable incorrectly installed.

Straighten any bent connector pins and then reconnect.


COLOR MONITOR DISPLAYING MONOCHROME.

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

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

•	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.


MONITOR DISPLAY NOT CENTERED WHILE LOADING WINDOWS VIDEO DRIVERS.

•	Monitor type incorrectly set.

Set the correct monitor type using the appropriate utility.


POST and Boot Messages

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

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

POST and Boot Error Messages

POST and Boot Informational Messages


POST and Boot Error Messages

The following error messages are arranged in alphabetical order.

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

Message	Problem	Solution
Diskette drive A error Diskette drive B error	Diskette drive has failed.	Run the BIOS Setup utility.  Check all connections.  If the problem persists, replace the defective diskette drive and/or drive cable.
Extended RAM Failed at offset: nnnn	Extended memory failed or configured incorrectly.	Make sure SIMMs are installed correctly (see Installing SIMMs).  If the problem persists, replace defective SIMMs.
Failing Bits: nnnn	nnnn is a map of the bits at the RAM address which failed the memory test.	Run the BIOS Setup utility and restore all to original values. If the problem persists, replace the defective memory.
Fixed Disk 0 Failure Fixed Disk 1 Failure Fixed Disk Controller failure	Hard disk drive and/or controller failed.	Run the BIOS Setup utility.  Check all connections.  If the problem persists, replace the defective hard disk drive and/or controller.
Incorrect Drive A type - run SETUP Incorrect Drive B type - run SETUP	Diskette drive A and/or B not correctly identified in the BIOS Setup utility.	Run the BIOS Setup utility and properly identify diskette drive A and/or B.
Invalid NVRAM media type	NVRAM access failed.	Run the BIOS Setup utility and restore all settings to original values.  If the problem persists, replace the defective component.
Keyboard controller error Keyboard error Keyboard locked - Unlock key switch	Keyboard and/or keyboard controller failed.	Check the keyboard connection.  If the connection is secure, the keyboard or keyboard controller might have failed.  If the problem persists, replace the defective keyboard and/or controller.
Monitor type does not match CMOS - Run SETUP	Monitor type has been incorrectly specified.	Run the BIOS Setup utility and set the correct monitor type.
Operating system not found	The operating system cannot be found on drive A or drive C.	Run the BIOS Setup utility and correctly identify drive A or drive C. Correctly install the operating system.  Refer to the supplied operating system documentation.
Parity check 1 nnnn Parity check 2 nnnn	Parity error found in the computer bus.  The BIOS attempts to locate the address and display it on your monitor screen.	Run the BIOS Setup utility and restore all settings to original values.  If the problem persists, replace the main logic board.
Press <F1> to resume, <F2> to Setup	This message appears after any recoverable error message.	Press <F1> to reboot or <F2> to enter the BIOS Setup utility to make any necessary changes.
Real time clock error	Real-time clock failed BIOS test.	Replace real-time clock and then run the BIOS Setup utility to restore previous configuration information.
Shadow RAM Failed at offset: nnnn	Shadow RAM failed.	Run the BIOS Setup utility and disable failed shadow memory region.
System battery is dead - Replace and run SETUP	Battery/real-time clock failed.	Replace the battery and then run the BIOS Setup utility to restore previous configuration information.
System cache error - Cache disabled	RAM cache failed.	Run the BIOS Setup utility and restore all settings to original values.  If the problem persists, replace the defective cache memory.
System CMOS checksum bad - run SETUP	Battery/real-time clock failed.	Correct the address conflict using the BIOS Setup utility.  If the problem persists, replace the battery/real-time clock.
System RAM failed at offset: nnnn	System RAM failed.	Run the BIOS Setup utility and restore all settings to original values.  If the problem persists, replace the defective memory.
System timer error	The computer's timer test failed.	Run the BIOS Setup utility and restore all settings to original values.  If the problem persists, replace the defective component.


POST and Boot Informational Messages

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

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


Beep Codes

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

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

Resolve any problems using the procedures in Troubleshooting.

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


QAPlus/PRO Advanced Diagnostics

Celebris XL computers are shipped with QAPlus/PRO.  Complete instructions for using this diagnostic software package are provided in electronic form within the software.  A README file is also included, describing how to start QAPlus/PRO.


System Specifications

Standard Computer Features

Standard Slots and Ports

Storage Bay Features


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, and 2.88 MB 3½-inch drive, and 360 KB, 1.2 MB 5¼-inch drive
SCSI	Onboard NCR 53C810 embedded SCSI controller:  Supports up to 7 SCSI devices  (hard disk drives, CD-ROMs, etc.) on either - • the internal SCSI cable  • an external SCSI cable connected to a SCSI expansion box


Storage Bay Features

Front access	diskette drive: 1 - 3½-inch) 1-inch high optional storage device(s): 3 - 5¼-inch half-height bays
Internal	1 - 3½-inch, half-height bay (hidden)
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


Technical Specifications

These topics provide information about the technical characteristics of the Celebris XL Computer.

Computer Specifications

CPU Specifications

Computer Performance Specifications

Computer Dimensions

Computer Environmental Specifications

ISA Expansion Slots

PCI Local Bus Expansion Slots

Power Supply and Input Power

Nominal Current Requirements

Power Cord Specifications

Main Logic Board Jumpers

Main Logic Board Jumper Settings

CPU Module Jumper Settings


Computer Specifications

These topics provide information about the physical and technical specifications of the Celebris XL Computer.

CPU Specifications

Computer Performance Specifications

Computer Dimensions

Computer Environmental Specifications


CPU Specifications

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:
-	90 MHz internally, 60 MHz externally
-	100 MHz internally, 66 MHz externally

•	Secondary cache memory
-	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.

NOTE
Both CPU ZIF sockets will be occupied on Celebris XL computers which support dual processing.


Computer Performance Specifications

Attributes	Specification
Bus clock	7.5/8.33 MHz
Data I/O    ISA    PCI	8-bit and 16-bit 32-bit
Main logic board DRAM	8 MB standard up to 384 MB (Pentium CPU module installed)
ROM BIOS size	128 KB flash memory
Alkaline computer battery	3-year shelf life


Computer Dimensions

Dimension	Specification
Width	177.8 mm (7.0 in)
Length	431.8 mm (17.0 in)
Height	431.8 mm (17.0 in)
Weight	12.875 kg (28.359 lb.)


Computer Environmental Specifications

Attributes	Specification
Operating temperature	10°C to 40°C (50°F to 104°F)
Storage temperature	−20°C to 65°C (−4°F to 149°F)
Operating humidity (noncondensing)	20% to 80% relative humidity,  maximum wet bulb 40 °C  (104 °F)
Storage humidity (noncondensing)	10% to 90% relative humidity,  maximum wet bulb 65°C  (149°F)
Altitude   Operating   Nonoperating	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
Thermal Considerations

•	For three disk drives with greater than 11 watts of power consumption, the maximum operating temperature is 33 °C/91 °F.

•	If using two disk drives with greater than 11 watts of power consumption, configure them in device bays 1 and 3.


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 CPU module

•	The +5 V dc requirements of the peripherals

•	The power demands of all other slots in use


PCI Local Bus Expansion Slots

The main logic board contains three PCI local bus expansion slots.  These slots support:

•	5 V dc only PCI expansion boards

•	5/3.3 V dc universal PCI expansion boards

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

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

•	Bus mastering


Power Supply and Input Power Requirements

The 300W input switchable power supply provides five dc voltages: +12 V dc,
−12 V dc, +5 V dc, −5 V dc, and 3.3 V dc.  These voltages are used by the various components within the computer.  Rated input current includes outlet current.

Computer Input Power Requirements

Rated  Voltage Range	Maximum Range	Rated Input Current	Operating Frequency Range
100 V ac - 120 V ac	88 V ac  - 132 V ac	8 A	47 Hz - 63 Hz
220 V ac - 240 V ac	176 V ac - 264 V ac	4 A	47 Hz - 63 Hz


Nominal Current Requirements

Celebris XL computers provide the following nominal current requirements:

•	+3.3 V dc 35 A

•	+5 V dc 38 A

•	-5 V dc 0.5 A

•	+12 V dc 7 A

•	−12 V dc 0.5 A


Power Cord Specifications

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

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

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

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

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

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


Main Logic Board Jumpers

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

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

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

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


Main Logic Board Jumper Settings

Factory default settings are listed in blue.

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


NOTE

ROM-based Setup must be enabled.


NOTE

Disabling this jumper prevents corruption of the boot block when a boot block update is not required


CPU Module Jumper Settings (Pentium)
CPU Module Jumper Settings

Voltage regulator sockets might not be present on some CPU modules, or might appear different on different CPU modules.

Factory default settings are given in blue.

Feature	Description	Setting
CPU external clock	60 MHz (90 MHz internal) 66 MHz (100 MHz internal)	J2, pin 1 and 2 jumpered J2, pin 2 and 3 jumpered
CPU core/bus frequency ratio	2/1 speed bus 3/2 speed bus	J4, jumpered J4, open
Reserved	Factory use only	J8, jumpered J8, open


Device Mapping

These Help topics list device mapping information for Celebris XL computers.

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

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

CPU Memory Address Map (Full Range)

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 (16 MB max size)
16MB to 128MB	main memory	Up to 384 MB  for P54C CPUs
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 CBFFF	SCSI BIOS (if enabled)	16 KB
CC000 to DFFFF	PCI/ISA card BIOS and buffer memory	80 KB
E0000 to EFFFF	Planar BIOS memory	128 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)
IRQ9	Onboard SCSI (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	ECP mode (if enabled)
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	EISA/ISA bridge
C6xx	PCI slot 1
C7xx	PCI slot 2
C8xx	PCI slot 3


Interface Connectors

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

•	Parallel Printer Connector
25-pin D-submini female

•	Serial Port Connectors
9-pin D-submini male

•	Keyboard and Mouse Connectors
6-pin mini-DIN


Parallel Printer Connector

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

Parallel Printer Pinout

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


Serial Port Connectors

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

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

9-Pin Serial Port Pinouts

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


Keyboard and Mouse Connectors

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

Keyboard and Mouse Connector Pinouts

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


Contents

Celebris XL Computer Field Service/Field Training - Version 1.1

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

General Information

About This Help System

Introduction

Related Material

Glossary

Service Information

System Features

System Utilities

Security Features

BIOS Setup Utility

Troubleshooting

Service Procedures

Parts List

Technical Reference

System Specifications

Technical Specifications

Device Mapping

Interface Connectors

For Help on Help, Press F1


About This Help System

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

Organization

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

Enhanced Illustrations

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

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

Note and Legend Buttons

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

Color

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

Entire contents of this Help file copyright © 1994 Digital Equipment Corporation.


Introduction

Celebris XL 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, PCI-based SCSI technology, and a host of high-performance options, Celebris XL computers offer you the most advanced features in their class. Note that your monitor, keyboard, and mouse might look different from the one shown.

•	CPU Module Technology
Allows for potential future growth to higher performance processors with Power Grade

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

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

•	Onboard SCSI Controller
PCI-based NCR 53C810 embedded SCSI controller permits up to seven peripherals

•	PCI Local Bus Technology
Highest performing 32-bit I/O bus on the market today


Related Material

Celebris XL Quick Setup Guide	ER-870WW-IA
Celebris XL User's Guide	ER-870WW-UA
Pentium CPU Modules	ER-780WW-CA
NCR SCSI Device Management System User's Guide	ER-870WW-AA
ISA Configuration Utility (ICU) User's Guide	ER-PNPAL-UA


System Features

Advanced Power Management

Onboard SCSI Controller

PCI Features

Plug and Play

Front Panel Controls and Indicators

Rear Panel Connectors and Voltage Select Switch


Advanced Power Management

Advanced Power Management (APM) technology enables users to reduce their computer's power consumption during non-operation.  APM options include:

•	System/suspend timeouts

•	Hard disk drive timeouts

•	Quick suspend

For more information on accessing and selecting these APM options, refer to Power Options and to the supplied DOS/Windows documentation.

NOTE
The monitor and hard disk drive must be green compatible to use any of the monitor and disk drive power saving features contained in APM.

The computer also comes with DOS-based power managed drivers for your NCR SCSI device.  Refer to the NCR SCSI Device Management System User's Guide and to your DOS and Windows information.


Onboard SCSI Controller

Celebris XL computers use a PCI-based NCR 53C810 embedded SCSI controller that automatically controls up to seven SCSI peripherals such as hard disk drives, CD-ROMs, tape drives, and removable media.  It can also function as a secondary peripheral controller if the computer already uses a primary disk drive controller (such as IDE).


PCI Features

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

•	Highest performing bus on the market today

•	Offers the best expandability for high-performance peripheral devices

•	Supports multiple bus masters

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

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


Plug and Play

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

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

Plug and Play software for MS-DOS and Windows comes factory-installed on computers that have a hard disk drive.  This kit is also supplied on a DOS-bootable diskette for use with operating systems other than DOS and Windows.

There is on-line help information in the ICU.  Users can access the ICU through the "Getting Started" program.  Also, users can refer to the ICU User's Guide and to any additional Plug and Play documentation supplied with the Celebris XL computer.


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.


hard drive

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


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 (IDE and SCSI).


turbo light

The turbo light is lit when the computer runs at the rated microprocessorspeed.  Indicator is off when the computer runs in non-turbo mode (8 MHz).


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 users to connect a monitor to ac power.


ac line connector

Allows users to connect the computer to an ac power source.


mouse connector

Allows users to connect a PS/2 compatible mouse.


keyboard connector

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


serial port connectors

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


SCSI port connector

Provides the interface between the computer and an external SCSI device.


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 864/PCI Video Adapter card.)


parallel port connector

This port allows users to connect an industrystandard parallel printer.


ISA expansion slots

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


PCI expansion slots

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


ISA/PCI shared expansion slot

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


chassis lock

Locks the outside panels to prevent unauthorized access.


voltage select switch

Allows users to switch from 115 V ac input power to 230 V ac input power, depending on voltage requirements in the user's region or country.


System Utilities

Celebris XL computers come with several utility programs and device drivers that are factory installed as image files (on computers that came with a hard disk drive) and supplied on diskettes.

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

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

EPP3NS.EXE

KP.EXE

Setting a Keyboard and Mouse Password

Multilingual BIOS Diskette (PHLASH.EXE)

Creating a Crisis Recovery Diskette

Using a Crisis Recovery Diskette

Upgrading The Computer's BIOS

Changing the Computers BIOS to Another Language

Additional Utilities and Drivers

Plug and Play Kit for MS-DOS and Windows

QAPlus/Pro Diagnostics

Getting Started and Digital Utilities

Logitech Mouse Drivers

SCSI Drivers


 EPP3NS.EXE

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

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

Note the path where the driver is located.

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

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

device=C:\epp3ns.exe

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

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

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

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

7.	Choose EPP mode.

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

The computer automatically reboots.

The parallel port is now configured as an EPP port.


KP.EXE

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

If a keyboard and mouse password is set, the password is deleted each time the computer is turned off.  When the computer is turned on again, a new keyboard and mouse password must be set.  When a power-on password has been set, the power-on password becomes the keyboard and mouse password.

A keyboard and mouse password can have as many as seven upper or lower case keyboard characters.  These characters are recorded exactly as you enter them.  For example, the 6 from the numeric keypad cannot be substituted for the 6 from the typewriter key section of the keyboard.

NOTE
When a keyboard and mouse password is created, the characters do not appear on the screen as they are typed.  The characters also do not appear on the screen at any other time a keyboard and mouse password is entered or changed.

See also:	Setting a Keyboard and Mouse Password


Setting a Keyboard and Mouse Password

A keyboard and mouse password can be set after KP.EXE has been copied onto the computer's hard disk.

Perform the following steps to set a keyboard and mouse password:

1.	At the C:\> 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 such an application is installed on a particular Celebris XL computer, add the /nic parameter in order to set a keyboard and mouse password using the Keyboard Password utility.

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

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

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


Multilingual BIOS Diskette (PHLASH .EXE)

The following files are supplied on the Multilingual BIOS Diskette:

•	PHLASH.EXE and associated runtime files.

•	Binary multilingual BIOS images

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

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

Before Using PHLASH.EXE

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

•	A blank 3½-inch 1.44 MB formatted diskette

•	A diskette copy of the multilingual BIOS upgrade diskette


Creating a Crisis Recovery Diskette

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

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

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

a:
dir

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

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

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

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

c:
md upgrade

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

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

5.	Insert a blank formatted diskette into drive A.

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

a:
md ugrade

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

c:
makecrd

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

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


Using a Crisis Recovery Diskette

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

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

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

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

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

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

1.	Turn off the computer, unlock and remove the left-side cover, and set the recovery jumper (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 Your Computer's BIOS
Upgrading the Computer's BIOS

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

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

Refer to Creating a Crisis Recovery Diskette.

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

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

The computer now boots from the multilingual BIOS diskette.

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

4.	At the MS-DOS prompt, type:

a:\upgrade\phlash.

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

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

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

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

6.	Remove the multilingual BIOS diskette.


Changing the Computers BIOS to Another Language

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

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

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

2.	Insert the multilingual BIOS diskette into drive A.

3.	At the DOS prompt, type:

a:\phlash**

where ** represents the appropriate BIOS language as follows:

SP  Spanish
GR  German
FR  French
IT  Italian
EN  English

For example, to switch to a Spanish BIOS enter:

a:\phlashSP

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

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

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

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

5.	Remove the multilingual BIOS diskette.


"Getting Started" and Digital Utilities

These utilities serve as a backup for the Getting Started user interface.


Logitech Mouse Drivers

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


SCSI Drivers

•	MS-DOS/Windows, Windows NT, Netware, and OS/2 NCR SCSI Drivers
For additional information on locating a specific driver, see the README.TXT file supplied with the SCSI drivers.  For installation and other instructions, refer to the supplied SCSI Device Management System User's Guide.

•	NCR SCO UNIX SCSI Drivers
For additional information on locating the driver file you need, see the README.TXT file supplied with the SCSI driver.  For installation and other instructions, refer to the supplied SCSI Device Management System User's Guide.


Glossary

512KB-640KB mapping

AT bus space

BIOS

Cache BIOS ROM

Cache video ROM

CPU module

CPU speed

flash memory

HDD data transfer method

new screws

PCI device

Primary cache

Recovery diskette

SCSI controller

Secondary cache

Shadow 32K at C8000, D0000, and D8000

Shadow video ROM

SIMM

static electricity

ZIF


CPU Speed

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

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

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

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

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


Large Drive Addressing

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

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


HDD Data Transfer Method

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


Primary Cache

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

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


Secondary Cache

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

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

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

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


Cache BIOS ROM

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


Shadow Video ROM

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


Cache Video ROM

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


Shadow 32K at C8000, D0000, and D8000

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

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


AT Bus Space

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

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


512KB-640KB Mapping

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


PCI Device

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

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


BIOS

Basic Input/Output System


flash memory

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


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.


SCSI controller

Celebris XL computers use an embedded SCSI controller that automatically controls SCSI peripherals.  It can also function as a secondary peripheral controller if the computer already uses a primary disk drive controller (such as IDE).


SETUP.EXE

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


ZIF

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


BIOS Setup Utility

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

Running the BIOS Setup Utility

Navigating in the BIOS Setup Utility

BIOS Setup Utility Options

Main Menu Options

Advanced Options

Security Options

Power Options


Running the BIOS Setup Utility

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

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

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

1.	Turn on the computer.

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

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


Navigating in the BIOS Setup Utility

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

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

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

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

Exit Menu Options

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

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

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

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

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


BIOS Setup Utility Options

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

NOTE
In some cases, options might be listed in a different order than they actually appear in the sub-menus.

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

Hard Disk Options

Memory and Cache

Boot Options

Keyboard Features

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

Integrated Peripherals

Advanced Chipset Control

•	Security Options
sets passwords and backup data reminders

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

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

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


Main Menu Options

Hard Disk Options

Memory and Cache

Boot Options

Keyboard Features

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


NOTE

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

The BIOS Setup utility supports only one language per computer.


Hard Disk Options

(IDE Adapter 0/1 Master/Slave)

Menu Fields	Settings	Comments
Autotype fixed disk		Press [Enter] to detect and fill in the installed hard disk drive parameters in the remaining fields.
Type	1 to 39 User	Selecting 1 to 39 automatically fills in the remaining fields in this menu. Selecting User allows the remaining fields to be filled in manually, using the installed hard disk drives parameters.
Cylinders	0 to 4095	Displays the number of cylinders.
Heads	1 to 64	Displays the number of heads.
Sectors/track	0 to 63	Displays the number of sectors/track.
Write precomp	0 to 4095 None	Displays the number of cylinders that have their write timing changed.
Multi-sector transfers	2 sectors 4 sectors 8 sectors 16 sectors Auto Disabled	Determines the number of sectors per block for multiple sector transfers. Auto refers to the size the disk returns when queried.
LBA control mode	Disabled Enabled	Enables or disables the LBA hard disk drive addressing option.


Notes
NOTE

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


NOTE

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


Memory and Cache

Menu Fields	Settings	Comments
Internal cache	Enabled Disabled	Enables or disables the computer's internal cache.
External cache	Enable (WB) Enable (WT) Disable	The computers external cache operates in write-back mode if Enable (WB) is selected. The computers external operates in write-through mode if Enable (WT) is selected. For optimal computer performance, keep this setting at Enabled (WB).
System BIOS shadow	Enabled (Not user selectable; permanently set)	The main logic board reserves an area of DRAM for a copy of system BIOS ROM.  This DRAM called "shadow memory" is write-protected and has the same addresses as the system BIOS ROM locations.  When system BIOS ROM is shadowed, the ROM information is copied into an appropriate area in DRAM.  This increases the computer's performance because the system BIOS instructions are in fast DRAM instead of ROM.
Cache system BIOS	Enabled Disabled	This option enables the system BIOS to be cached in the internal cache and external cache (if installed).  This increases computer performance because BIOS instructions can be executed in cache instead of RAM.
Video BIOS shadow	Enabled Disabled	The main logic board reserves an area of DRAM for a copy of video BIOS ROM.  This DRAM called "shadow memory" is write-protected and has the same addresses as the video BIOS ROM locations.  When video BIOS ROM is shadowed, the ROM information is copied into an appropriate area in DRAM.  This increases the computer's performance because the video BIOS instructions are in fast DRAM instead of ROM.
Cache video BIOS	Enabled Disabled	This option enables the video BIOS to be cached in the internal cache and external cache (if installed).  This increases computer performance because video BIOS instructions can be executed in cache instead of RAM.
Shadow option ROMs   C800-CBFF   CC00-CFFF   D000-D3FF   D400-D7FF   D800-DBFF   DC00-DFFF	Enabled Disabled	Enables or disables shadowing of individual segments of ROM to increase computer performance.
AT bus space	Disabled	Memory hole not available; upper memory is contiguous.
	C00000h, 4 MB	Sets the memory hole at address C00000 with 4 MB memory available.
	E00000h, 2 MB	Sets the memory hole at address E00000 with 2 MB memory available.
	F00000h, 1 MB	Sets the memory hole at address F00000 with 1 MB memory available.
Extended memory report	Compatibility Non-  compatibility	Selects the BIOS report mechanism for memory amount. Select Compatibility when using a conventional operating system. Select Non-compatibility for extended memory above 64 MB under Windows NT  v3.1.


NOTE

The computers internal cache is integral to the CPU.


CAUTION

Some option ROMs do not operate properly when shadowed.


Boot Options

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


Keyboard Features

Menu Fields	Settings	Comments
Numlock	Auto On Off	Turns Numlock on or off each time the computer boots.
Key click	Disabled Enabled	Enables or disables the audible key click feature.
Keyboard auto-repeat rate	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 the key is held 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.


NOTE

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


Advanced Options

Integrated Peripherals

Advanced Chipset Control

Menu Fields	Settings	Comments
Plug & Play O/S	Yes No	Select Yes if using a Plug & Play operating system. Otherwise, select No.
Large disk access mode	DOS Other	Select DOS if MS-DOS is installed. Select Other if another operating system is installed. A large disk drive constitutes one that has more than 1024 cylinders, 16 heads, or 63 tracks per sector.


Integrated Peripherals

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


NOTE

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


Advanced Chipset Control

	CAUTION The following advanced chipset control options should normally stay at their default values. Change them only if necessary to correct specific operating problems or errors.
Menu Fields	Settings	Comments
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 might be required for some PCI options thate do not properly support this PCI feature.
PCI arbiter priority	System default	Use the BIOS default value. BIOS will select optimal settings based on the current computer hardware configuration.
	Pure rotating	The priority rotates for all PCI devices.
	ISA slot	ISA slot has the highest priority.
	Onboard SCSI	Onboard SCSI has the highest priority.
	CPU	CPU has the highest priority.
	PCI slot 1	PCI slot 1 has the highest priority.
	PCI slot 2	PCI slot 2 has the highest priority.
	PCI slot 3	PCI slot 3 has the highest priority.
On-board SCSI latency timer	40h, 48h 50h, 58h 60h, 68h 70h, 78h 80h, 88h 90h, 98h A0h, A8h B0h, B8h C0h, C8H D0h, D8h E0h, E8h F0h, F8h Default 08h, 10h 18h 20h, 28h 30h, 38h	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.
PCI slot 1-3 latency timer	40h, 48h 50h, 58h 60h, 68h 70h, 78h 80h, 88h 90h, 98h A0h, A8h B0h, B8h C0h, C8H D0h, D8h E0h, E8h F0h, F8h Default 08h, 10h 18h 20h, 28h 30h, 38h	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.


CAUTION

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.


Security Options

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


NOTE

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


NOTE

Entering Setup with a user password restricts access to certain BIOS Setup utility menus.

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


NOTE

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


Power Options

Menu Fields	Settings	Comments
Power management	Enabled Disabled	Enables or disables the following power management options.
Hard disk suspend timer	Enabled Disabled	Disables or enables 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.
System suspend timer	Disabled 30 min. 1 hour 1.5 hours 2 hours 3 hours 4 hours	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. If a timer is set for the field, set Power Management to Enabled. Alternately, disable this option to avoid using this feature.
Quick suspend	Enabled Disabled	Enabling this option allows the computer to be placed in suspend mode by pressing [Ctrl] + [Alt] + [Esc].


Security Features

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

Chassis Key Lock

Diskette Write Protection

Physical Chassis Lockdown

Reminder Messages

Supervisor and User Password


Chassis Key Lock

The computer's chassis key lock is located at the rear of the computer.   When locked, it prevents others from opening the computer's side panels.

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

See also:	Rear Panel Connectors and Voltage Select Switch


Diskette Write Protection

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

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

1.	Reboot the computer.

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

The Setup main menu appears on the screen.

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

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

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

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

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


Physical Chassis Lockdown

The Celebris XL computer can be physically anchored to a fixed location using the locking tab at the rear of the chassis.  To anchor the computer, pull the tab out of its slot and attach a Kensington lock (or equivalent).


Reminder Messages

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

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

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

To configure the reminder message options:

1.	Reboot the computer.

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

The Setup main menu appears on the screen.

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

4.	Highlight the System Backup Reminder field.

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

4.	Highlight the Virus Check Reminder field.

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

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

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


Supervisor and User Password

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

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

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

1.	Reboot the computer.

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

The Setup main menu appears on the screen.

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

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

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

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

6.	If desired, set a user password.

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

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

8.	Highlight the Diskette Access field.

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

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

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