Compaq Deskpro Workstation AP250
Hardware Reference Guide
Deskpro Workstation AP250
Hardware Reference Guide
Notice
Compaq Computer Corporation shall not be liable for technical or editorial errors or
omissions contained herein. The information in this guide is subject to change without notice.
© 2000 Compaq Computer Corporation. Except for use in connection with the accompanying
Compaq product, no part of this guide may be photocopied or reproduced in any form without
prior written consent from Compaq Computer Corporation.
COMPAQ, the Compaq logo, and Deskpro Registered in U.S. Patent and Trademark Office.
Microsoft, Windows, Windows NT, Windows 2000 Professional, and other names of
Microsoft products referenced herein are trademarks or registered trademarks of Microsoft
Corporation.
Intel and Pentium are registered trademarks of Intel Corporation.
All other product names mentioned herein may be trademarks or registered trademarks of
their respective companies.
The following words and symbols mark special messages throughout this guide:
WARNING:
to follow directions could result in bodily harm or loss of life.
CAUTION:
to follow directions could result in damage to equipment or
loss of information.
Text set off in this manner indicates that failure
Text set off in this manner indicates that failure
Compaq Deskpro Workstation AP250
Hardware Reference Guide
First Edition (June 2000)
Part Number 191009-001
Compaq Computer Corporation
chapter 1
Product Features
Standard Configuration Features............................................................................................. 1-1
Front Panel Components......................................................................................................... 1-2
Rear Panel Components .......................................................................................................... 1-3
System Board Components ..................................................................................................... 1-4
Changing from a Minitower to a Desktop Configuration ....................................................... 1-5
Changing from a Desktop to a Minitower Configuration ....................................................... 1-8
Windows Logo Key .............................................................................................................. 1-11
Special Mouse Functions....................................................................................................... 1-11
Serial Number Location ........................................................................................................ 1-11
chapter 2
Hardware Upgrades
Installation Sequence............................................................................................................... 2-2
Removing the Workstation Access Panel................................................................................ 2-3
Removing the Front Bezel....................................................................................................... 2-4
Installing Additional Memory................................................................................................. 2-5
Guidelines for RIMM Installation ..................................................................................... 2-5
Installing RIMMs .............................................................................................................. 2-6
Removing RIMMs............................................................................................................. 2-7
Installing Additional Drives ....................................................................................................2-8
Drive Bay Components ..................................................................................................... 2-8
Preparing for Drive Installation......................................................................................... 2-9
Removing the Bezel Blank .......................................................................................... 2-9
Installing a Drive ............................................................................................................. 2-10
Installing a Hard Drive into a 3.5-inch Drive Bay..................................................... 2-10
Installing a Hard Drive into a 5.25-inch Drive Bay................................................... 2-12
Removing a Drive............................................................................................................ 2-14
Installing and Removing an Expansion Board...................................................................... 2-16
Identifying the PCI and ISA Expansion Slots ................................................................. 2-16
Installing an Expansion Board......................................................................................... 2-17
Removing an Expansion Board ....................................................................................... 2-18
Identifying the AGP Graphics Controller Expansion Slot............................................... 2-19
Installing and Removing an AGP Graphics Controller ................................................... 2-20
Installing a Processor ............................................................................................................ 2-21
Attaching the Heatsink to the Processor.......................................................................... 2-21
Installing the Processor/Heatsink Assembly.................................................................... 2-24
ONTENTS
C
Index
..................................................................................................................................................... I-1
Compaq Deskpro Workstation AP250 Hardware Reference Guide iii
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RODUCT FEATURES
P
Standard Configuration Features
The Compaq Deskpro Workstation AP250 workstation is a
minitower system that can be easily converted to a desktop. Features
may vary depending on your model. For a complete listing of the
hardware and software installed in your workstation, run the INSPECT
utility described in the Troubleshooting Guide.
Compaq Deskpro Workstation AP250 Hardware Reference Guide 1-1
Front Panel Components
Front panel components
1-2 Product Features
1 CD-ROM eject button
2 CD-ROM drive activity light
3 CD-ROM headphone jack
4 CD-ROM volume
5 Diskette drive activity light
6 Diskette eject button
7 Power button
8 Power-on light
9 Hard drive activity light
Rear Panel Components
Rear panel components
1 Power cord connector
2 Voltage select switch
3 Two universal serial bus (USB) connectors
4 Keyboard connector
5 Mouse connector
6 Serial connector (COMM1)
7 Serial connector (COMM2)
8 Headphone connector
9 Line-out audio connector
: Parallel connector
; Microphone connector
ω Line-in audio connector
ε VGA (AGP) video connector
ρ External SCSI connector (on select models)
Compaq Deskpro Workstation AP250 Hardware Reference Guide 1-3
System Board Components
System board components
1 ISA expansion slot
2 Shared PCI/ISA expansion slot
3 PCI expansion slots
4 AGP expansion slot
5 Primary processor
6 RIMM slots 1-2
7 Power connector
8 Battery
9 Diskette drive connector
− Secondary IDE connector
θ Primary IDE connector
ω Power switch and LED connector
ε Power-on password (P49) enabled jumper
ρ SW50 CMOS pushbutton switch
τ WOL header connector
ψ CD-ROM audio cable connector
1-4 Product Features
Changing from a Minitower to a Desktop Configuration
To change from a minitower to a desktop configuration:
1. Turn off the workstation and any external devices.
2. Disconnect the power cord from the grounded AC outlet and the
back of the workstation, then disconnect the network cable from
the system, and any external devices.
3. Remove the workstation access panel. Refer to Removing the
Workstation Access Panel in Chapter 2.
4. Remove the front bezel. Refer to Removing the Front Bezel in
Chapter 2.
5. Disconnect all power and data cables from the drives in the
5.25-inch drive bay.
6. To release a drive from the 5.25-inch drive bay, slide the drivelock
as shown. Carefully push the drive from the back of the unit until
the drive casing can be grasped.
Releasing the drives with the drivelock
CAUTION: Do not hold the face plate while removing a drive. Only
hold a drive by its casing.
7. While holding the drive casing, gently pull the drive out of the
drive bay.
Compaq Deskpro Workstation AP250 Hardware Reference Guide 1-5
CAUTION: When removing the drives, do not pull the drives from the
front of the drive bay. To prevent damage to the drive bezel, push the
drives from the rear to remove them from the front of the drive bay.
8. After placing the workstation in the desktop position, gently slide
the drives back into the bay.
1-6 Product Features
Installing the drives
CAUTION: The use of unnecessary force when installing the drive
may result in damage to the drive.
✎
9. Reconnect the power and data cables to the drives as labeled.
Always place the diskette drive in the bay nearest the top
(bay 3) of the chassis in the desktop configuration to ensure
proper drive clearance and access. When all of the drives are
properly inserted, the drivelock will secure the drives in place.
10. Remove the subpanel as described in the Removing the Bezel
Blank section in Chapter 2 and reposition the subpanel with the
bezel blank in the proper orientation for the desktop configuration.
CAUTION: Hold the subpanel straight when you pull it away from the
front bezel. Pulling the subpanel away at an angle could damage the
pins that align it within the front bezel.
Changing from a minitower to a desktop configuration
11. Replace the subpanel, front bezel, and the workstation access
panel. Be sure the subpanel and front bezel align properly with the
alignment tabs.
✎
12. Reconnect the power cord to the grounded AC outlet, then
When converting from a minitower to a desktop orientation,
use the replacement bezel blank that was shipped with your
workstation to ensure the Compaq logo is properly oriented.
reconnect the network cable and any external devices to the
system.
Compaq Deskpro Workstation AP250 Hardware Reference Guide 1-7
Changing from a Desktop to a Minitower Configuration
To change from a desktop to a minitower configuration:
1. Turn off the workstation and any external devices.
2. Disconnect the power cord from the grounded AC outlet and the
back of the workstation, then disconnect the network cable from
the system, and any external devices.
3. Remove the workstation access panel. Refer to Removing the
Workstation Access Panel in Chapter 2.
4. Remove the front bezel. Refer to Removing the Front Bezel in
Chapter 2.
5. Disconnect all power and data cables from the drives in the
5.25-inch drive bay.
6. To release a drive from the 5.25-inch drive bay, slide the drivelock
as shown.
1-8 Product Features
Releasing the drives with the drivelock
7. While pressing the drivelock button, push from the back of the
drives until the drive casing can be grasped.
8. While holding the drive casing, pull the drives out of the drive bay.
9. After placing the workstation in the minitower position, gently
slide the drives back into the bay.
Installing the drives
CAUTION: The use of unnecessary force when installing the drives
may damage the drives.
✎
10. Reconnect the power and data cables to the drives as labeled.
Always place the diskette drive in the bay nearest the internal
3.5-inch drives (bay 3) in the minitower configuration for
proper clearance within the chassis. When the drives are
properly inserted, the drivelock will secure them.
Compaq Deskpro Workstation AP250 Hardware Reference Guide 1-9
11. Remove the subpanel as described in the Removing the Bezel
Blank section of Chapter 2 and reposition the subpanel with the
bezel blank in the proper orientation for the minitower
configuration.
CAUTION: Hold the subpanel straight when you pull it away from the
front bezel. Pulling the subpanel away at an angle could damage the
pins that align it within the front bezel.
1-10 Product Features
Changing from a desktop to a minitower configuration
12. Replace the subpanel, front bezel, and workstation access panel.
Be sure the subpanel and front bezel align properly with the
alignment tabs.
✎
13. Reconnect the power cord to the grounded AC outlet, then
When converting from a desktop to a minitower orientation,
use the replacement bezel blank that is shipped with your
workstation to ensure the Compaq logo is properly oriented.
reconnect the network cable and any external devices to the
system.
Windows Logo Key
Use the Windows Logo key in combination with other keys to perform
certain functions in Windows 2000 Professional and Windows NT
Workstation 4.0.
Special Mouse Functions
Most software applications support the use of a mouse. The functions
assigned to each mouse button depend on the software application you
are using.
Windows logo key + F1 Displays a pop-up menu for the
selected object
Windows logo key + Tab Activates the next Taskbar
button
Windows logo key + E Launches Explore My Computer
Windows logo key + F Launches Find Document
Windows logo key + Ctrl + F Launches Find Computer
Windows logo key + M Minimizes all open applications
Shift + Windows logo key + M Undoes Minimize All
Windows logo key + R Displays Run dialog box
Serial Number Location
Each computer has a unique serial number located on the corner of the
computer access panel and on the rear panel of the computer. Keep this
number available when contacting Compaq customer service.
Compaq Deskpro Workstation AP250 Hardware Reference Guide 1-11
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ARDWARE UPGRADES
H
This chapter explains how to remove the workstation access panel and
the front bezel. It also explains how to install the following hardware:
■ Memory
■ Drives
■ Expansion boards
■ Processors
✎
Compaq recommends that you finish the setup procedures for
the preinstalled software before you install any optional
hardware or third-party devices that were not included with
your workstation.
Compaq Deskpro Workstation AP250 Hardware Reference Guide 2-1
Installation Sequence
Follow this sequence of steps to ensure the proper installation of any
optional equipment. Before you begin, observe the following
precautions:
WARNING: To reduce the risk of personal injury from hot surfaces,
!
allow the internal system components to cool before touching them.
WARNING: To reduce the risk of electrical shock, fire, or damage to
!
the equipment, do not plug telecommunications/telephone
connectors into the network interface controller (NIC) receptacles.
CAUTION: Static electricity can damage the electronic components
of the workstation or optional equipment. Before beginning these
procedures, ensure that you are discharged of static electricity by
briefly touching a grounded metal object.
1. Turn off the workstation and disconnect the power cord from the
grounded AC outlet and the back of the workstation.
2. Disconnect the keyboard, monitor, network cable, and other
external equipment connected to the workstation.
3. Open the workstation by removing its workstation access panel.
See the section, Removing the Workstation Access Panel, in
this chapter for instructions.
2-2 Hardware Upgrades
4. If you are installing or removing drives in the front bays, see the
section, Removing the Front Bezel, in this chapter for
instructions.
5. Install any optional equipment, such as memory, drives, expansion
boards, processors, or batteries. See the appropriate sections in this
chapter or the appendices for installation instructions. Also refer to
the documentation provided with the optional equipment.
6. Replace the front bezel and the workstation access panel, if
necessary.
7. Reconnect the keyboard, monitor, network cable, and other
external devices.
8. Reconnect the power cord to the back of the workstation and plug
the power cord into a grounded AC outlet.
9. Turn on the monitor, workstation, and any devices you installed.
10. Reconfigure the workstation, if necessary.
11. Test the workstation (optional) using the TEST utility.
Removing the Workstation Access Panel
To remove the workstation access panel:
1. Turn off the workstation and any external devices.
2. Disconnect the power cord from the grounded AC outlet and the
back of the workstation.
3. Refer to the following illustration to remove the workstation
access panel.
Loosening the two thumbscrews and removing the workstation access panel
✎
When replacing the workstation access panel, be sure to
tighten both thumbscrews.
Compaq Deskpro Workstation AP250 Hardware Reference Guide 2-3
Removing the Front Bezel
To remove the front bezel:
1. Turn off the workstation and any external devices.
2. Disconnect the power cord from the grounded AC outlet and the
3. Remove the workstation access panel. Refer to Removing the
4. Push in on the two front bezel release tabs, then rotate the front
back of the workstation.
Workstation Access Panel in this chapter.
bezel away from the chassis to release it.
2-4 Hardware Upgrades
Pressing the front bezel release tabs to remove the front bezel
✎
When replacing the front bezel, ensure that the bottom hinge
points are properly placed in the chassis before rotating the
front bezel back into its original position.
Installing Additional Memory
The Compaq Deskpro Workstation AP250 workstation supports Error
Checking and Correcting (ECC) Direct Rambus inline memory
modules (RIMMs). Additional RIMMs are available to upgrade the
memory. A maximum of 32 count Direct RDRAM devices is supported
on each Direct Rambus memory channel. Continuity RIMMs
(CRIMMs) must populate any empty slots.
Guidelines for RIMM Installation
When installing RIMMs, you must follow the guidelines listed below:
■ A RIMM can be installed only one way. Be sure to match the two
key slots on the RIMM with the tabs on the RIMM socket. Push
the RIMM down into the RIMM socket, ensuring that it is fully
inserted and properly seated, and that the retaining arms are locked
in place.
■ For optimal performance, install RIMMs in Slot 1, then Slot 2, and
so on.
■ CRIMMs must be installed in all empty RIMM sockets. The
CRIMMs are removed when you populate the sockets with
RIMMs.
■ Never populate Slot 1 with a CRIMM. The correct configurations
are:
❏ Slot 1 (RIMM) and Slot 2 (CRIMM), or
❏ Slot 1 (RIMM) and Slot 2 (RIMM)
■ Do not exceed 32-count Direct RDRAM devices on each Direct
Rambus memory channel. A label on the RIMM will indicate the
number of Direct RDRAM devices on the RIMM and their speed.
✎
■ Do not mix RIMMs with different memory speeds. Performance
You cannot remove or add Direct RDRAMS to a RIMM
because the Direct RDRAMS are soldered on and encased by
another material.
will reflect the slowest speed RIMMs.
Compaq Deskpro Workstation AP250 Hardware Reference Guide 2-5
Installing RIMMs
■ For proper system operation, the RIMMs must be industry-
standard, 168-pin, unbuffered RIMMs. The RIMMs must support
CAS Latency 2 or 3 (CL = 2 or CL = 3). They also must contain
the mandatory Joint Electronic Device Engineering Council
(JEDEC) Serial Presence Detect (SPD) information.
CAUTION: Static electricity can damage the electronic components
of the workstation or optional boards. Before beginning these
procedures, ensure that you are discharged of static electricity by
briefly touching a grounded metal object.
CAUTION: The above guidelines must be followed when installing
RIMMs or your workstation will not function.
CAUTION: When handling a memory module, do not touch any of the
contacts. Doing so can damage the module.
WARNING: To reduce the risk of personal injury when replacing or
!
removing RIMMs, allow the module being removed from the RIMM
slot sufficient time to cool. RIMM temperatures can reach
100°C (212°F).
2-6 Hardware Upgrades
CAUTION: When handling a RIMM, do not touch any of the contacts.
Doing so may damage the module.
CAUTION: Static electricity can damage the electronic components
of the workstation or option boards. Before beginning these
procedures, ensure that you are discharged of static electricity by
briefly touching a grounded metal object.
Before installing additional RIMMs, read Guidelines for RIMM
Installation in this chapter.
✎
CRIMMs must be installed in all unpopulated RIMM slots.
To install a memory module:
1. Turn off the workstation and any external devices, then disconnect
the power cord from the grounded AC outlet.
On a power-managed system, the power cord must be
disconnected from the grounded AC outlet.
2. Remove the workstation access panel and locate the RIMM
sockets.
CAUTION: Be sure to follow the correct configuration guidelines
respective to your memory board or your system will not function.
3. Using the following illustration as a guide, insert the RIMM
module into the empty RIMM socket.
Removing RIMMs
Installing a RIMM module
4. Replace the workstation access panel.
5. Plug the power cord back into the grounded AC outlet. Reconnect
external devices.
6. Turn on the workstation. The workstation will automatically
recognize the added memory.
To remove a memory module from a RIMM slot, reverse the previous
procedure.
Compaq Deskpro Workstation AP250 Hardware Reference Guide 2-7
Installing Additional Drives
Drive Bay Components
Your workstation supports up to five drive bays. See the following list
for a description of the drive bay components.
2-8 Hardware Upgrades
Identifying drive bay components
Drive bays 1 through 3 are located on the front of the workstation.
Bays 4 and 5 are located inside the workstation. The drives support
various drive configurations.
1
Bay 1 5.25-inch, half-height bay for optional drive
2
Bay 2 5.25-inch, half-height bay for optional drive
3
Bay 3 3.5-inch, high-density diskette drive mounted in the
5.25-inch, one-third height bay
4
Bay 4 3.5-inch, one-third height bay for hard drive
5
Bay 5 3.5-inch, one-third height bay for hard drive
✎
Drive bay numbers are stamped on the chassis, behind the
front bezel.
Preparing for Drive Installation
Removing the Bezel Blank
Remove the drive bezel blank before installing any removable media
storage device, such as a tape drive, CD-ROM or DVD-ROM drive, or
diskette drive, in these bay locations.
To remove the bezel blank:
1. Turn off the workstation and any external devices.
2. Disconnect the power cord from the grounded AC outlet and the
back of the workstation.
3. Remove the workstation access panel. Refer to Removing the
Workstation Access Panel in this chapter.
4. Remove the front bezel. Refer to Removing the Front Bezel in
this chapter.
5. Gently pull the subpanel, with the bezel blank still secured, away
from the front bezel. Remove the bezel blank from the subpanel.
CAUTION: Hold the subpanel straight when you pull it away from the
front bezel. Pulling the subpanel away at an angle could damage the
pins that align it within the front bezel.
Removing the bezel blank from the subpanel
Compaq Deskpro Workstation AP250 Hardware Reference Guide 2-9
✎
When replacing the subpanel, ensure that the aligning pins are
in their proper orientation.
Installing a Drive
Installing a Hard Drive into a 3.5-inch Drive Bay
✎
✎
To install a hard drive in a 3.5-inch drive bay:
1. Turn off the workstation and disconnect the power cord from the
2. Remove the Workstation access panel. Refer to Removing the
3. Remove the Front bezel. Refer to Removing the Front Bezel in
When converting from a minitower to a desktop orientation,
use the replacement subpanel that is shipped with your
workstation to ensure the Compaq logo is properly oriented.
Compaq does not support mixing IDE and SCSI hard drives in
the same system. If you are replacing a hard drive in bay 4 or
bay 5, it should be of the same type.
grounded AC outlet and the back of the workstation.
Workstation Access Panel in this chapter.
this chapter.
2-10 Hardware Upgrades
4. Refer to the following illustrations to install a diskette drive in a
3.5-inch bay.
Installing a hard drive into the hard drive bay
Connecting the signal cable and power cable
5. Reassemble the workstation.
Compaq Deskpro Workstation AP250 Hardware Reference Guide 2-11
Installing a Hard Drive into a 5.25-inch Drive Bay
To install a 3.5-inch drive into the half-height, 5.25-inch drive bay, the
drive must be in an adapter. To install the drive and adapter:
1. Turn off the workstation and any external drives. Disconnect the
power cord from the grounded AC outlet. Then remove the
workstation access panel.
On a power-managed system, the power cord must be
disconnected from the grounded AC outlet.
2. Install the four screws into the drive as shown in the following
illustration to secure the drive to the bracket.
3. Install the guide screws into the hard drive bracket.
4. Install the adapter in the drive bay by sliding it into the front of the
drive cage. The drivelock automatically secures the adapter when
it snaps into place.
✎
The primary 3.5-inch diskette drive should only be installed
into bay 3, which is the bottom bay in the minitower
configuration and the top bay in the desktop configuration.
Aligning the guide screws and installing a 3.5-inch drive
2-12 Hardware Upgrades
5. Connect the drive cables to the system board.
Connecting the drive cables to the system board
1
CD-ROM audio cable connector
2
Primary IDE connector
3
Secondary IDE connector
4
Diskette drive connector
6. Replace the workstation access panel.
7. Plug the power cord back into the grounded AC outlet. Reconnect
external devices.
Compaq Deskpro Workstation AP250 Hardware Reference Guide 2-13
Removing a Drive
✎
1. Turn off the workstation and any external devices. Disconnect the
2. Remove the workstation access panel. Refer to Removing the
3. Remove the front bezel. Refer to Removing the Front Bezel in
4. Disconnect the drive power and signal cables and, if it is a
5. Slide the drivelock to unlock the drive in the drive bay. If the drive
Compaq does not support mixing Ultra ATA and SCSI hard
drives in the same system. If you are replacing a hard drive in
bay 4 or bay 5, the replacement drive should be of the same
type as the drive being removed.
power cord from the grounded AC outlet.
On a power-managed system, the power cord must be
disconnected from the grounded AC outlet.
Workstation Access Panel in this chapter.
this chapter.
CD-ROM drive, disconnect the audio connector.
is in the desktop position, press the drivelock button to unlock the
drive.
2-14 Hardware Upgrades
Releasing the drives with the drivelock
6. While sliding the drivelock, push from the back of the drives until
the drive casing can be grasped from the front of the workstation.
7. While holding the drive casing, pull the drives out of the drive bay.
Removing a drive from the 5.25-inch drive bay
8. Store the drives in an antistatic package.
Compaq Deskpro Workstation AP250 Hardware Reference Guide 2-15
Installing and Removing an Expansion Board
This section provides instructions for installing and removing PCI and
ISA expansion boards.
✎
For product documentation related to your graphics controller,
refer to the Workstation Reference Library CD included with
your workstation.
Identifying the PCI and ISA Expansion Slots
This workstation contains ISA and PCI shared slots. The following
illustration identifies the physical locations of these slots.
2-16 Hardware Upgrades
Identifying PCI and ISA expansion slots
1
One ISA expansion slot
2
One ISA/PCI expansion slot
3
Four PCI expansion slots
Installing an Expansion Board
To install an expansion board:
1. Turn off the workstation and disconnect the power cord from the
grounded AC outlet.
2. Remove the workstation access panel and locate the correct vacant
slot in the workstation chassis.
3. Remove the screw securing the expansion slot cover, then remove
the slot cover, as illustrated.
To replace the expansion cover, reverse the procedure.
Removing the screw and expansion slot cover
Compaq Deskpro Workstation AP250 Hardware Reference Guide 2-17
4. Slide the expansion board into the expansion slot and press the
board firmly into place.
When installing an expansion board, press firmly on the board so
that the whole connector seats properly in the expansion board
slot.
Removing an Expansion Board
2-18 Hardware Upgrades
Installing an expansion board
5. Replace the screw at the side of the expansion slot.
6. Replace the workstation access panel.
7. Connect external cables to the installed board, if necessary.
8. Plug the power cord back into the grounded AC outlet.
9. Turn on the system.
10. Reconfigure the workstation, if necessary.
Reverse the steps in the previous section to remove an expansion
board. When reversing these steps:
❏ Be sure to store the board in antistatic packaging.
❏ Install an expansion slot cover to close the open slot.
Identifying the AGP Graphics Controller Expansion Slot
Your workstation also ships with an Accelerated Graphics Port (AGP)
expansion slot on the system board 1. The following illustration shows
the location of this slot.
Identifying the AGP graphics controller expansion slot
✎
For product documentation related to your graphics controller,
refer to the Workstation Reference Library CD included with
your workstation.
Compaq Deskpro Workstation AP250 Hardware Reference Guide 2-19
Installing and Removing an AGP Graphics Controller
To install the AGP graphics controller, remove the metal slot screw and
cover, insert the board into the AGP slot, and press the board firmly
into place. Replace the metal slot screw. See Installing an Expansion
Board in this chapter for more information.
To ensure the board fits properly, use an AGP graphics controller with
an ATX format bracket.
When installing an AGP graphics controller, press firmly on the board
so that the whole connector seats properly in the AGP slot. If you are
installing a full-length expansion board, be sure to engage the card
guide.
2-20 Hardware Upgrades
Installing an AGP graphics controller
To remove the AGP graphics controller, remove the metal slot screw,
hold the board at each end, and then pull up. Be sure to replace the
metal slot screw and cover. See Removing an Expansion Board in
this chapter for more information.
Installing a Processor
Attaching the Heatsink to the Processor
The Compaq Deskpro Workstation AP250 is a one-processor system.
To upgrade your existing processor to a faster speed processor, refer to
the instructions provided in the following sections.
WARNING: To reduce the risk of personal injury from hot surfaces,
!
allow the internal system components to cool before touching them.
CAUTION: Static electricity can damage the electronic components
of the workstation. Before beginning these procedures, be sure you
are discharged of static electricity by briefly touching a grounded
metal object.
To attach the heatsink to the processor:
1. Turn off the workstation and disconnect the power cord from the
grounded AC outlet and the back of the workstation.
2. Remove the workstation access panel. Refer to Removing the
Workstation Access Panel in this chapter.
Compaq Deskpro Workstation AP250 Hardware Reference Guide 2-21
3. Place the heatsink on the front face of the exposed processor. Be
sure to align the pins through the holes correctly.
Attaching the heatsink to the processor
2-22 Hardware Upgrades
5. Slide the metal bracket on the back of the processor to the right
and secure the bracket.
Attaching the metal bracket to the back of the processor
To remove the heatsink from the processor, reverse the above
procedure.
Compaq Deskpro Workstation AP250 Hardware Reference Guide 2-23
Installing the Processor/Heatsink Assembly
WARNING: To reduce the risk of personal injury from hot surfaces,
!
allow the internal system components to cool before touching them.
CAUTION: Static electricity can damage the electronic components
of the workstation. Before beginning these procedures, be sure you
are discharged of static electricity by briefly touching a grounded
metal object.
To install the processor/heatsink assembly onto the system board:
1. Turn off the workstation and disconnect the power cord from the
grounded AC outlet and the back of the workstation.
2. Remove the workstation access panel. Refer to Removing the
Workstation Access Panel in this chapter.
3. Slide the processor into the socket.
2-24 Hardware Upgrades
Installing the processor/heatsink assembly onto the system board
appendix A
PECIFICATIONS
S
Compaq Professional Workstation SP750
Component U.S. Metric
Dimensions
Height
Width
Depth
Approximate Weight 54.75 lb 24.89 kg
Power Supply
Operating Voltage Range
Rated Voltage Range
Rated Line Frequency
Temperature
Operating
Shipping
Humidity (noncondensing)
Operating
Nonoperating
Maximum Altitude (unpressurized)
Operating
Nonoperating
Power Output 425 W
Rated Input Current (maximum) 8 A 4 A
Heat Dissipation (maximum) 2418 Btu/hr 609 kg-cal/hr
18.7 inch
8.03 inch
23.2 inch
115 VAC
90-132 VAC
100-127 VAC
50-60 Hz
50° to 104°F
4° to 140°F
20% to 80%
10% to 90%
10,000 ft
30,000 ft
47.50 cm
20.40 cm
58.90 cm
230 VAC
180-264 VAC
200-250 VAC
50-60 Hz
10° to 40°C
-15° to 60°C
3,048 m
9,144 m
Hardware Reference Guide A-1
Compaq Professional Workstation AP550
Component U.S. Metric
Minitower Dimensions
Height
Width
Depth
Desktop Dimensions
Height
Width
Depth
Approximate Weight 26 lb 12 kg
Power Supply
Operating Voltage Range
Rated Voltage Range
Rated Line Frequency
Temperature
Operating
Shipping
Humidity (noncondensing)
Operating
Nonoperating
Maximum Altitude (unpressurized)
Operating
Nonoperating
Power Output 375 W
Rated Input Current (maximum) 8 A 4 A
Heat Dissipation (maximum) 2200 Btu/hr 560 kg-cal/hr
17.65 in.
6.60 in.
17.36 in.
6.60 in.
17.65 in.
17.11 in.
115 VAC
90-132 VAC
100-127 VAC
50-60 Hz
50° to 95°F
4° to 140°F
20% to 80%
10% to 90%
10,000 ft
30,000 ft
44.83 cm
16.76 cm
44.09 cm
16.76 cm
44.83 cm
43.46 cm
230 VAC
180-264 VAC
200-250 VAC
50-60 Hz
10° to 35°C
-15° to 60°C
3,048 m
9,144 m
A-2 Specifications
Compaq Deskpro Workstation AP250
Component U.S. Metric
Minitower Dimensions
Height
Width
Depth
Desktop Dimensions
Height
Width
Depth
Approximate Weight 26 lb 12 kg
Power Supply
Operating Voltage Range
Rated Voltage Range
Rated Line Frequency
Temperature
Operating
Shipping
Humidity (noncondensing)
Operating
Nonoperating
Maximum Altitude (unpressurized)
Operating
Nonoperating
Power Output 200 W
Rated Input Current (maximum)
200 W 5.5 A 3 A
Heat Dissipation (maximum)
200 W 1050 Btu/hr 265 kg-cal/hr
17.65 in.
6.60 in.
17.11 in.
6.60 in.
17.65 in.
17.11 in.
115 VAC
90-132 VAC
100-127 VAC
50-60 Hz
50° to 95°F
4° to 140°F
20% to 80%
10% to 90%
10,000 ft
30,000 ft
44.83 cm
16.76 cm
43.46 cm
16.76 cm
44.83 cm
43.46 cm
230 VAC
180-264 VAC
200-250 VAC
50-60 Hz
10° to 35°C
-15° to 60°C
3,048 m
9,144 m
Hardware Reference Guide A-3
appendix B
OMPUTER SETUP
C
Computer Setup Utilities (F10)
Use Computer Setup to do the following:
■ Change factory default settings.
■ Set the system date and time.
■ Set, view, change, or verify the system configuration, including
settings for processor, graphics, memory, audio, storage,
communications, and input devices.
■ Modify the boot order of bootable devices such as hard drives,
diskette drives, CD-ROM drives, DVD-ROM drives, or LS-120
drives.
■ Configure the boot priority of UATA and SCSI hard drives
controllers.
■ Configure Quiet Drive options (for drives that support this
feature).
■ Enable Quick Boot, which is faster than Full Boot but does not run
all of the diagnostic tests run during a Full Boot. You can set your
system to:
❏ always Quick Boot (default);
❏ periodically Full Boot (from every 1 to 30 days); or
❏ always Full Boot.
■ Enable or disable Network Server Mode, which allows the
computer to boot the operating system when the power-on
password is enabled, with or without a keyboard or mouse
attached. When attached to the system, the keyboard and mouse
remain locked until the power-on password is entered.
■ Select Post Messages Enabled or Disabled to change the display
status of Power-On Self-Test (POST) messages. Post Messages
Disabled suppresses most POST messages, such as memory count,
product name, and other non-error text messages. If a POST error
occurs, the error is displayed regardless of the mode selected. To
manually switch to Post Messages Enabled during POST, press
any key (except F10 or F12).
Hardware Reference Guide B-1
■ Establish an Ownership Tag, the text of which is displayed each
time the system is turned on or restarted.
■ Enter the Asset Tag or property identification number assigned by
your company to this computer.
■ Enable power-on password prompting during system restarts
(warm boots) as well as during power-on.
■ Establish a setup password that controls access to Computer Setup
(F10) and the settings described in this section.
■ To secure integrated I/O functionality, including the serial, USB,
or parallel ports, audio, or embedded NIC, so that they cannot be
used until they are unsecured.
■ Enable or disable Master Boot Record (MBR) Security. This
feature is not supported on the Compaq Professional Workstation
AP550 or SP750.
■ Enable or disable removable media boot ability.
■ Enable or disable removable media write ability.
■ Solve system configuration errors detected but not automatically
fixed during the Power-On Self-Test (POST).
■ Replicate your system setup by saving system configuration
information on diskette and restoring it on one or more computers.
B-2 Computer Setup
■ Execute self-tests on a specified IDE hard drive.
■ Configure various energy-saving features including energy saver
mode, system and hard drive timeouts, power button mode, and
power LED behavior.
Using Computer Setup Utilities
To access the Computer Setup Utilities menu, complete the following
steps:
1. Turn on or restart the computer. If you are in Windows, click
Start ! Shut Down ! Restart the Computer.
2. When the F10=Setup message appears in the lower-right corner of
the screen, press the F10 key.
If you do not press the F10 key while the message is
✎
displayed, you must restart the computer again to
access the utility.
3. Select your language from the list and press the Enter key.
4. A choice of five headings appears in the Computer Setup Utilities
menu: File, Storage, Security, Power, and Advanced.
5. Using the arrow keys or the Tab key, select the option you want
and press the Enter key. To return to the Computer Setup Utilities
menu, press the Esc key.
6. To apply and save changes, select File ! Save Changes and Exit.
❏ If you selected an option that automatically restarted the
computer, changes were applied at that time.
❏ If you have made changes that you do not want applied, select
Ignore Changes and Exit.
❏ If you have already applied changes you now want to
eliminate, select Set Defaults and Exit. This option will restore
the original factory system defaults.
Hardware Reference Guide B-3
Computer Setup
Heading Option Description
File System Information Lists:
• product name
• processor type/speed/stepping
• cache size (L1/L2)
• installed memory size
• system ROM (includes family name and
version)
• system board revision
• chassis serial number
• asset tracking number
• integrated MAC for embedded, enabled NIC (if
applicable)
About Displays copyright notice.
Set Time and Date Allows you to set system time and date.
Save to Diskette Saves system configuration, including CMOS, to a
blank, formatted 1.44-MB diskette.
Restore from Diskette Restores system configuration, including CMOS,
from a diskette.
Set Defaults and Exit Restores factory default settings, which includes
clearing any established passwords.
Ignore Changes and Exit Exits Computer Setup without applying or saving any
changes.
Save Changes and Exit Saves changes to system configuration and exits
Computer Setup.
Support for Computer Setup options may vary depending on your specific hardware configuration.
Continued
B-4 Computer Setup
Computer Setup Continued
Heading Option Description
Storage Device Configuration Lists all installed storage devices. The following
options appear when a device is selected:
Diskette Type (For legacy diskette drives only)
Identifies the highest capacity media type accepted
by the diskette drive. Options are 3.5" 1.44 MB, 3.5"
720 KB, 5.25" 1.2 MB, 5.25" 360 KB, and Not
Installed.
Drive Emulation (IDE devices only)
Allows you to select a drive emulation type for a
storage device. (For example, a Zip drive can be
made bootable by selecting disk emulation.)
Drive Type Emulation Options
Hard disk No emulation options available.
Diskette None (treated as diskette drive)
Disk (treated as hard drive)
CD-ROM None (treated as CD-ROM drive)
Diskette (treated as diskette drive)
Disk (treated as hard drive)
Other (e.g.,
Zip drive)
Transfer Mode (IDE devices only)
Specifies the active data transfer mode. Options
(subject to device capabilities) are PIO 0, Max PIO,
Enhanced DMA, Ultra DMA 0, and Max UDMA.
Support for Computer Setup options may vary depending on your specific hardware configuration.
None (treated as Other)
CD-ROM (treated as CD-ROM drive)
Diskette (treated as diskette drive)
Disk (treated as hard drive)
Continued
Hardware Reference Guide B-5
Computer Setup Continued
Heading Option Description
Storage
(continued)
Support for Computer Setup options may vary depending on your specific hardware configuration.
Device Configuration
(continued)
Translation Mode (IDE disks only)
Lets you select the translation mode to be used for
the device. This enables the BIOS to access disks
partitioned and formatted on other systems and may
be necessary for users of older versions of Unix
(e.g., SCO Unix version 3.2). Options are Bit-Shift,
LBA Assisted, User, and None.
CAUTION: Ordinarily, the translation mode selected
automatically by the BIOS should not be changed. If the
selected translation mode is not compatible with the
translation mode that was active when the disk was
partitioned and formatted, the data on the disk will be
inaccessible.
Translation Parameters (IDE Disks only)
Allows you to specify the parameters (logical
cylinders, heads, and sectors per track) used by the
BIOS to translate disk I/O requests (from the
operating system or an application) into terms the
hard drive can accept. Logical cylinders may not
exceed 1024. The number of heads may not exceed
256. The number of sectors per track may not
exceed 63. These fields are only visible and
changeable when the drive translation mode is set to
User.
Multisector Transfers (IDE ATA devices only)
Specifies how many sectors are transferred per multisector PIO operation. Options (subject to device
capabilities) are Disabled, 8, and 16.
Quiet Drive (available on select drives only)
• Performance
Allows the drive to operate at maximum
performance.
• Quiet
Reduces noise from the drive during operation.
When set to Quiet, the drive will not operate at
maximum performance.
If the drive does not support Quiet mode, the Quiet
Drive option will not be displayed.
Continued
B-6 Computer Setup
Computer Setup Continued
Heading Option Description
Storage
(continued)
Support for Computer Setup options may vary depending on your specific hardware configuration.
Options Removable Media Boot
Enables/disables ability to boot the system from
removable media.
Note: After saving changes to Removable Media
Boot, the computer will restart. Turn the computer off,
then on, manually.
Removable Media Write
Enables/disables ability to write data to removable
media.
Note: This feature applies only to legacy diskette,
IDE LS-120 Superdisk, and IDE PD-CD drives.
Primary IDE Controller
Allows you to enable or disable the primary IDE
controller.
Secondary IDE Controller
Allows you to enable or disable the secondary IDE
controller.
Diskette MBR Validation
Allows you to enable or disable strict validation of the
diskette Master Boot Record (MBR).
Note: If you use a bootable diskette image that you
know to be valid, and it does not boot with Diskette
MBR Validation enabled, you may need to disable
this option in order to use the diskette.
Continued
Hardware Reference Guide B-7
Computer Setup Continued
Heading Option Description
Storage
(continued)
Support for Computer Setup options may vary depending on your specific hardware configuration.
DPS Self-Test Allows you to execute self-tests on IDE hard drives
capable of performing the Drive Protection System
(DPS) self-tests.
Note: This selection will only appear when at least
one drive capable of performing the IDE DPS selftests is attached to the system
Hard Drive Order
(supported on select
models only)
SCSI Narrow Termination
(supported on select
models only)
Boot Order Allows you to specify the order in which attached
Allows you to specify the order of attached hard drive
controllers. The first hard drive controller in the order
will have priority in the boot sequence and will be
recognized as drive C (if any devices are attached).
Allows you to configure SCSI termination on the
internal SCSI subsystem for older, narrow SCSI
devices only. This feature is disabled by default
which allows connection to wide SCSI devices.
peripheral devices (such as diskette drive, hard drive,
CD-ROM, or network interface card) are checked for
a bootable operating system image. Each device on
the list may be individually excluded from or included
for consideration as a bootable operating system
source. For systems with more than one attached
diskette or disk drive, a submenu allows you to
specify the order in which the devices are assigned
drive letters.
Note: MS-DOS drive lettering assignments may not
apply after a non-MS-DOS operating system has
started.
To boot one time from a device other than the
default device specified in Boot Order, restart the
computer and press F9 when the F10=Setup
message appears on the screen. When POST is
completed, a list of bootable devices is displayed.
Use the arrow keys to select a device and press the
Enter key.
Continued
B-8 Computer Setup
Computer Setup Continued
Heading Option Description
Security Setup Password Allows you to set and enable setup (administrator)
password.
Note: If the setup password is set, it is required to
change Computer Setup options, flash the ROM, and
make changes to certain plug and play settings
under Windows. Also, this password must be set in
order to use some Compaq remote security tools.
See the Troubleshooting Guide for more information.
Power-On Password Allows you to set and enable power-on password.
See the Troubleshooting Guide for more information.
Password Options Allows you to
• enable/disable network server mode.
Note: This selection will appear only if a poweron password is set.
• specify whether password is required for warm
boot (CTRL+ALT+DEL).
Note: This selection is available only when
Network Server Mode is disabled.
See the Desktop Management Guide for more
information.
Smart Cover Allows you to
• enable/disable the Smart Cover Lock
• enable/disable Smart Cover Sensor.
Notify User alerts the user that the sensor has
detected that the cover has been removed.
Setup Password requires that the setup
password be entered to boot the computer if the
sensor detects that the cover has been
removed.
Feature supported on select models only. See the
Desktop Management Guide for more information.
Support for Computer Setup options may vary depending on your specific hardware configuration.
Continued
Hardware Reference Guide B-9
Computer Setup Continued
Heading Option Description
Security
(continued)
Support for Computer Setup options may vary depending on your specific hardware configuration.
Master Boot Record
Security
Save Master Boot Record Saves a backup copy of the Master Boot Record of
Restore Master Boot
Record
Allows you to enable or disable Master Boot Record
(MBR) Security.
When enabled, the BIOS rejects all requests to write
to the MBR on the current bootable disk. Each time
the computer is powered on or rebooted, the BIOS
compares the MBR of the current bootable disk to the
previously-saved MBR. If changes are detected, you
are given the option of saving the MBR on the current
bootable disk, restoring the previously-saved MBR,
or disabling MBR Security. You must know the setup
password, if one is set.
Note: Disable MBR Security before intentionally
changing the formatting or partitioning of the current
bootable disk. Several disk utilities (such as FDISK
and FORMAT) attempt to update the MBR. If MBR
Security is enabled and disk accesses are being
serviced by the BIOS, write requests to the MBR are
rejected, causing the utilities to report errors. If MBR
Security is enabled and disk accesses are being
serviced by the operating system, any MBR change
will be detected by the BIOS during the next reboot,
and an MBR Security warning message will be
displayed.
Feature supported on select models only.
the current bootable disk.
Note: Only appears if MBR Security is enabled.
Restores the backup Master Boot Record to the
current bootable disk.
Note: Only appears if all of the following conditions
are true:
• MBR Security is enabled
• A backup copy of the MBR has been previously
saved
• The current bootable disk is the same disk from
which the backup copy of the MBR was saved
Continued
B-10 Computer Setup
Computer Setup Continued
Heading Option Description
Security
(continued)
Support for Computer Setup options may vary depending on your specific hardware configuration.
Device Security Enables/disables serial, parallel, and USB ports and
audio security.
Network Service Boot Enables/disables the computers ability to boot from
an operating system installed on a network server.
(Feature available on NIC models only; the network
controller must reside on the PCI bus or be
embedded on the system board.)
System IDs Allows you to set:
• asset tag (16-byte identifier) and ownership Tag
(80-byte identifier displayed during POST)
See the Desktop Management guide for more
information
• chassis serial number or Universal Unique
Identifier (UUID) number if current number is
invalid (these ID numbers are normally set in the
factory and are used to uniquely identify the
system)
• keyboard locale setting (e.g., English or
German) for System ID entry
Continued
Hardware Reference Guide B-11
Computer Setup Continued
Heading Option Description
Power Energy Saver Allows you to set the energy saver mode (advanced,
disable, or minimal).
Note: In the minimal energy saver mode setting, the
hard drive and system do not go into energy saver
mode, but the setting allows you to press the power
button to suspend the system.
This option is not available under ACPI-enabled
operating systems.
Timeouts Allows you to disable or manually select timeout
values for the system and/or all attached IDE hard
drives.
Note: This option is not available under ACPIenabled operating systems. This selection will only
appear when energy saver mode is set to advanced.
Energy Saver Options Allows you to set:
• power button configuration (on/off or
sleep/wake) under APM-enabled operating
systems
• power LED blink in suspend mode
(enable/disable). This option is not available
under ACPI-enabled operating systems.
Note: Energy Saver Options will not appear if the
energy saver mode is disabled.
Support for Computer Setup options may vary depending on your specific hardware configuration.
Continued
B-12 Computer Setup
Computer Setup Continued
Heading Option Description
Advanced* Power-On Options Allows you to set:
• POST mode (QuickBoot, FullBoot, or FullBoot
every 1-30 days)
• POST messages (enable/disable)
• Safe POST (enable/disable)
• F10 prompt (enable/disable)
• F12 prompt (enable/disable)
• Option ROM prompt (enable/disable)
• Remote wakeup boot sequence (remote
server/local hard drive)
• After power loss (off/on)
If you connect your computer to an electric
power strip, and would like to turn on power to
the computer using the switch on the power
strip, set this option to on.
Note: If you turn off power to your computer using
the switch on a power strip, you will not be able
to use the suspend/sleep feature or the Remote
Management features.
• UUID (Universal Unique Identifier)
(enable/disable)
Onboard Devices Allows you to set resources for or disable onboard
system devices (diskette controller, serial port,
parallel port).
PCI Devices • Lists currently installed PCI devices and their
IRQ settings.
• Allows you to reconfigure IRQ settings for these
devices or to disable them entirely.
Support for Computer Setup options may vary depending on your specific hardware configuration.
* These options should be used by advanced users only.
continued
Hardware Reference Guide B-13
Computer Setup Continued
Heading Option Description
Advanced*
(continued)
Bus Options Allows you to enable or disable:
• PCI bus mastering, which allows a PCI device to
take control of the PCI bus
• PCI VGA palette snooping, which sets the VGA
palette snooping bit in PCI configuration space;
this is only needed with more than one graphics
controller installed
• PCI SERR# Generation.
Device Options Allows you to set:
• Printer mode (bi-directional, EPP & ECP, output
only)
• Num Lock state at power-on (off/on)
• PME (power management event) wakeup
events (enable/disable)
• Processor cache (enable/disable)
• Processor Number (enable/disable) for Pentium
III processors.
• ACPI Thermal model (enable/disable)
• ACPI S3 support (enable/disable). S3 is an
ACPI (advanced configuration and power
interface) sleep state that some add-in hardware
options may not support. Feature supported on
select models only.
• AGP Aperture size (options vary depending on
platform) allows you to specify the amount of
system memory reserved for use by your
graphics controller.
PCI VGA Configuration Appears only if there are multiple PCI video adapters
in the system. Allows users to specify which VGA
controller will be the boot or primary VGA controller.
Support for Computer Setup options may vary depending on your specific hardware configuration.
* These options should be used by advanced users only.
B-14 Computer Setup
appendix C
ARD DRIVE INSTALLATION
H
UIDELINES
G
Using the Cable-Select Feature with Ultra ATA Devices
Select models of the Compaq Deskpro Workstation AP250 have an
internal IDE Ultra ATA hard drive preinstalled. The configuration of
the drives employs a cable-select feature that identifies the drives as
device 0 (primary drive) or device 1 (secondary drive).
The system board determines which drive is device 0 or device 1,
based on the way the drives are connected to the special drive cable.
The device 0 drive is the drive connected to the short segment of the
drive cable (or the connector closest to the system board); the device 1
drive is the drive connected to the long segment of the drive cable.
Compaq hard drives ship with jumpers preset to cable-select mode;
therefore, no jumper setting changes on the existing or optional drives
are required. If you purchase a third party hard drive, refer to the
documentation included with the kit to ensure proper installation and
configuration of cables.
✎
If installing a second device on the primary controller, you
must use an 80 conductor Ultra ATA cable for optimal
performance. This cable is standard on select models.
Guidelines for Installing Ultra ATA (IDE) Devices
When installing additional IDE drives, follow these guidelines:
■ For optimal performance, connect hard drives to the primary
controller. Connect expansion devices, such as IDE CD-ROM
drives, tape drives, and diskette drives, to the secondary controller.
■ Install either a third-height or a half-height drive into a half-height
bay.
■ Install guide screws to ensure that the drive lines up correctly in
the drive cage. Compaq has provided extra guide screws, which
are installed in the front of the workstation chassis behind the front
bezel. Some options use M3 metric hardware. Compaq-supplied
metric screws are black.
Hardware Reference Guide C-1
SCSI Devices and Guidelines
Guidelines for SCSI Devices
When installing and operating SCSI devices, you must follow these
guidelines:
■ A single Ultra SCSI, Ultra-Wide SCSI, Wide-Ultra SCSI, Wide
Ultra2 SCSI or Ultra3 SCSI, controller allows you to daisy-chain
up to 15 additional SCSI devices. Counting the controller, that
amounts to 16 total SCSI devices.
■ If two SCSI controllers are each connected to separate system
board SCSI connectors, each controller may have seven SCSI
devices attached. This will give a total of 16 SCSI devices on the
system.
■ The SCSI controller requires a unique SCSI ID (0-7 or 8-15) for
each SCSI device installed. The controller identifies a SCSI device
by its SCSI ID number rather than its location. Moving a SCSI
device from one position to another on the SCSI chain does not
affect communication between the controller and the device. The
reserved and availagle SCSI ID numbers for SCSI devices are:
❏ 0 is reserved for the primary hard drive.
❏ 7 is reserved for the controller.
C-2 Hard Drive Installation Guidelines
❏ 1 through 6 and 8 through 15 are available for all other SCSI
devices.
■ If only one SCSI hard drive is used, it should be installed in the
lowest numbered bay (bay 1).
■ On a Compaq Professional Workstation SP750, Bay 4 is reserved
for the CD-ROM or DVD-ROM drive. Do not install a SCSI
device in this bay.
■ Every SCSI chain or circuit must be terminated (closed) at both
ends. Some system boards have both ends of the SCSI cable
connected to, and terminated by, the system board. Termination
can be accomplished in one of several ways:
❏ Use a cable with a built-in terminator.
❏ Use a cable with a terminating resistor plug in the last
connector.
❏ Connect a SCSI device with its termination enabled into the
last connector.
❏ Connect an external SCSI device with its termination enabled
to the external SCSI connector on the rear panel of the
computer.
■ Turn on all external SCSI devices before turning on the power to
the computer. This enables the SCSI controller to recognize the
external devices.
■ All SCSI hard drives must be either internal or external, but never
both. The system accommodates a combination of other internal
and external SCSI devices, such as tape and CD-ROM drives.
■ Compaq does not recommend mixing different width SCSI devices
on the same SCSI chain or on the same SCSI controller. Mixing
devices of different widths on the same chain or controller will
always result in a data transfer rate of the slowest machine in that
chain. It is acceptable to mix Wide-Ultra2 and Ultra3 SCSI
devices, but do not mix Narrow devices with any devices other
than Narrow devices.
For additional information about optional SCSI devices, refer to the
documentation included with the device or contact your Compaq
authorized dealer, reseller, or service provider.
CAUTION: Do not route cables near the air intake to the power
supply. Cables routed in this manner can block airflow to the power
supply, causing it to overheat.
Guidelines for Installing a SCSI Device
Compaq does not support mixing Ultra ATA and SCSI hard drives in
the same system.
On a Compaq Deskpro Workstation AP250, if you are replacing a hard
drive in bays 4 or 5, the replacement drive should be of the same type
as the drive being removed. If you are replacing the Ultra ATA hard
drive with a SCSI hard drive, you will need a SCSI device option kit
and the SCSI controller option kit. The controller option kit contains
the SCSI controller and a cable that supports multiple SCSI devices.
Before installing a SCSI device on any workstation:
■ Verify the SCSI ID of the drive and, if necessary, set the SCSI ID
to a unique number. See Guidelines for SCSI Devices in this
appendix or refer to the documentation included with the device.
■ Determine if the device requires termination to be enabled or
disabled. Set the termination if necessary. See the section Using a
SCSI Cable or refer to the documentation included with the
device.
Hardware Reference Guide C-3
SCSI Controllers
SCSI Cables
Your workstation ships with one of the following SCSI controllers:
■ PCI SCSI controller (on select models of the Compaq Deskpro
Workstation AP250)
■ An integrated Ultra3 SCSI controller that has one internal
connector on the system board and one external connector on the
rear panel (Compaq Professional Workstation AP550)
■ An integrated Dual Ultra3 SCSI controller with two independent
channels, Channel 1 and Channel 2. Channel 1 has one internal
SCSI connector on the system board. Channel 2 has two
connectors, one internal SCSI connector on the system board and
one external SCSI connector on the rear panel of the workstation.
(Compaq Professional Workstation SP750)
Depending on your workstation model, the following three areas are
available for installing or connecting mass storage SCSI devices:
■ Removable hard drive cage (Compaq Professional Workstation
SP750 only)
■ Front drive bays
Using a SCSI Cable
C-4 Hard Drive Installation Guidelines
The Compaq Professional Workstation SP750 ships with a Low
Voltage Differential (LVD) SCSI cable that supports up to five SCSI
devices: a maximum of three in the removable hard drive cage and two
in the front drive bay area.
The Compaq Professional Workstation AP550 ships with a multi-mode
SCSI cable that supports LVD or single-ended devices. The cable
accommodates up to three SCSI devices in the front drive bay area.
The Compaq Deskpro Workstation AP250 also ships with a multimode SCSI cable that supports LVD or single-ended devices. The
cable accommodates up to three SCSI devices in the front drive bay
area. Some Compaq Deskpro Workstation AP250 models ship with an
internal SCSI drive preinstalled in the front drive bay area. You can
add additional high-performance SCSI drives using the external SCSI
connnector located on the rear panel of the workstation.
Five-device SCSI cable with terminator
The cable that shipped with your workstation may look different than
the one illustrated (a five-device cable).
✎
For additional information about installing optional SCSI devices, refer
to the documentation included with the device option kit or contact
your Compaq authorized dealer, reseller, or service provider.
If installing a narrow SCSI device, you will need to attach a
68-pin to 50-pin SCSI adapter.
Using SCSISelect with SCSI Devices
The Wide Ultra2 SCSI host adapter includes the SCSI
configure the host adapter and to run SCSI disk utilities. To run the
SCSI
■ In Post Messages Enabled mode: Press Ctrl+A when the Press
■ In Post Messages Disabled mode: When the Compaq logo screen
A menu appears with the following options:
utility:
Select
<Ctrl><A> for SCSISelect Utility message appears during POST.
appears, press any key to exit the logo screen. Immediately after
exiting the logo screen, press Ctrl+A to access the SCSI
utility.
Select
utility to
Select
■ Configure/View Host Adapter Settings
❏ SCSI Bus Interface Definitions
Host Adapter SCSI ID
SCSI Parity Checking
Host Adapter SCSI Termination
Hardware Reference Guide C-5
❏ Additional Options
Boot Device Options
SCSI Device Configuration
Advanced Configuration Options
■ SCSI Disk Utilities
Lists all SCSI devices and SCSI ID numbers
✎
For information about configuring POST message display
status, refer to Appendix B, Computer Setup.
C-6 Hard Drive Installation Guidelines
appendix D
ATTERY REPLACEMENT
B
The battery that comes with your computer provides power to the realtime clock and has a lifetime of about five years. When replacing the
battery, use an equivalent 3-volt lithium coin cell battery.
WARNING: Your computer contains an internal lithium
manganese dioxide, vanadium pentoxide, or alkaline battery or
battery pack. There is a risk of fire and burns if the battery pack
is not handled properly. To reduce the risk of personal injury:
Do not attempt to recharge the battery.
Do not expose to temperatures higher than 60°C (140ºF).
Do not disassemble, crush, puncture, short external contacts, or
dispose of in fire or water.
Replace only with the Compaq spare designated for this product.
Batteries, battery packs, and accumulators should not be
disposed of together with the general household waste. In order
to forward them to recycling or proper disposal, please use the
public collection system or return them to Compaq, your
authorized partners, or their agents.
1. Shut down the operating system properly, turn off the computer
and any external devices, disconnect the power cord from the
electrical outlet, and remove the computer cover or access panel.
✎
It may be necessary to remove an expansion card to gain
access to the battery.
Hardware Reference Guide D-1
2. Locate the battery and battery holder on the system board, as
shown in the following illustration.
Battery and Battery Holder
3. Lift the battery out of its holder.
D-2 Battery Replacement
Removing the Coin Cell Battery
4. Slide the replacement battery into position, positive side up.
The battery holder automatically secures the battery in the proper
position.
5. Replace any expansion boards you removed.
6. Replace the computer cover or access panel.
7. Plug in the computer and turn on power to the computer.
8. Reset the date and time, your passwords, and any special system
setups, using Compaq Computer Setup. Refer to Appendix B,
Computer Setup.
Hardware Reference Guide D-3
Installing a Cable Lock
appendix E
ECURITY LOCK PROVISIONS
S
The cable lock is an optional device used to help secure the
workstation.
1. Separate the pieces of the security bracket by bending the metal
where the three pieces join.
Separating the security brackets
Hardware Reference Guide E-1
2. Insert the tang (tongue) of the narrow bracket (Bracket A) into the
slot on the chassis and slide the U-shaped backet (Bracket B)
between it and the system unit cover; then install the self-tapping
screw included in the cable lock it.
✎
Due to differences between chassis, the slot may be located in
a different position than shown.
Installing brackets A and B
E-2 Security Lock Provisions
3. Cover the screw with the flat bracket (Bracket C).
4. Install a lock (not provided) in the security bracket to control
access to the inside of the workstation. Install a cable lock (not
provided) to secure the workstation to a fixed object.
Securing the workstation with a padlock
Hardware Reference Guide E-3
appendix F
LECTROSTATIC DISCHARGE
E
A discharge of static electricity from a finger or other conductor may
damage system boards or other static-sensitive devices. This type of
damage may reduce the life expectancy of the device.
Preventing Electrostatic Damage
To prevent electrostatic damage, observe the following precautions:
■ Avoid hand contact by transporting and storing products in static-
safe containers.
■ Keep electrostatic-sensitive parts in their containers until they
arrive at static-free workstations.
■ Place parts on a grounded surface before removing them from their
containers.
■ Avoid touching pins, leads, or circuitry.
■ Always be properly grounded when touching a static-sensitive
component or assembly.
Hardware Reference Guide F-1
Grounding Methods
There are several methods for grounding. Use one or more of the
following methods when handling or installing electrostatic-sensitive
parts:
■ Use a wrist strap connected by a ground cord to a grounded
workstation or computer chassis. Wrist straps are flexible straps
with a minimum of 1 Mohm +/- 10 percent resistance in the
ground cords. To provide proper ground, wear the strap snug
against the skin.
■ Use heelstraps, toestraps, or bootstraps at standing workstations.
Wear the straps on both feet when standing on conductive floors or
dissipating floor mats.
■ Use conductive field service tools.
■ Use a portable field service kit with a folding static-dissipating
work mat.
If you do not have any of the suggested equipment for proper
grounding, contact your Compaq authorized dealer, reseller, or service
provider.
✎
For more information on static electricity, contact your
Compaq authorized dealer, reseller, or service provider.
F-2 Electrostatic Discharge
Routine Computer Care
appendix G
OUTINE COMPUTER CARE AND
R
HIPPING PREPARATION
S
Follow these suggestions to take care of your computer and monitor:
■ Operate the computer on a sturdy, level surface. Leave a 3-inch
(7.6-cm) clearance at the back of the system unit and above the
monitor to permit the required airflow.
■ Never operate the computer with the cover or side panel removed.
■ Never restrict the airflow into the computer by blocking the front
vents or air intake. Do not place the keyboard, with the keyboard
feet down, directly against the front of the unit that is in a desktop
configuration as this also restricts airflow.
■ Never use a desktop computer on its side (resembling a tower
configuration) unless it is a computer that has the convertible
minitower (CMT) chassis.
■ Keep the computer away from excessive moisture, direct sunlight,
and extremes of heat and cold. For information about the
recommended temperature and humidity ranges for your computer,
refer to Appendix A, Specifications, in this guide.
■ Keep liquids away from the computer and keyboard.
■ Never cover the ventilation slots on the monitor with any type of
material.
Hardware Reference Guide G-1
■ Turn off the computer before you do either of the following:
CD-ROM Drive Precautions
Be sure to observe the following guidelines while operating or cleaning
your CD-ROM drive.
Operation
■ Do not move the drive during operation. This may cause it to
■ Avoid exposing the drive to sudden changes in temperature, as
❏ Wipe the exterior of the computer with a soft, damp cloth as
needed. Using cleaning products may discolor or damage the
finish.
❏ Occasionally clean the air vents on the front and back of the
computer. Lint and other foreign matter can block the vents
and limit the airflow.
malfunction during reading.
condensation may form inside the unit. If the temperature suddenly
changes while the drive is on, wait at least one hour before you
turn off the power. If you operate the unit immediately, it may
malfunction while reading.
■ Avoid placing the drive in a location that is subject to high
Cleaning
■ Clean the panel and controls with a soft, dry cloth or a soft cloth
■ Avoid using any type of solvent, such as alcohol or benzene,
Safety
If any object or liquid falls into the drive, immediately unplug the
computer and have it checked by an authorized Compaq service
provider.
G-2 Routine Computer Care and Shipping Preparation
humidity, extreme temperatures, mechanical vibration, or direct
sunlight.
lightly moistened with a mild detergent solution. Never spray
cleaning fluids directly on the unit.
which may damage the finish.
Shipping Preparation
Follow these suggestions when preparing to ship your computer:
1. Back up the hard drive files onto PD discs, tape cartridges, or
diskettes. Be sure that the backup media is not exposed to
electrical or magnetic impulses while stored or in transit.
✎
2. Remove and store any program diskettes from the diskette drives.
3. Insert a blank diskette into the diskette drive to protect the drive
4. Turn off the computer and external devices.
5. Disconnect the power cord from the electrical outlet, then from the
6. Disconnect the system components and external devices from their
✎
7. Pack the system components and external devices in their original
✎
The hard drive locks automatically when the system power is
turned off.
while in transit. Do not use a diskette on which you have stored or
plan to store data.
computer.
power sources, then from the computer.
Ensure that all boards are seated properly and secured in the
board slots before shipping the computer.
packing boxes or similar packaging with sufficient packing
material to protect them.
For environmental nonoperating ranges, refer to Appendix A,
Specifications, in this guide.
Hardware Reference Guide G-3
NDEX
I
A
AGP connector, 1-3
audio connectors, 1-3
B
bezel blank, 1-7, 1-10, 2-9
C
CD-ROM features, 1-2
configuration
desktop, 1-5, 1-8
configuration guidelines RIMMs,
2-5
CRIMMs (Continuity RIMMs), 2-5
D
desktop configuration, 1-5, 1-8
drivelock, 1-8
drives
connecting cables, 2-13
installing optional 3.5-inch, 2-
12
illustrated, 2-12
installing optional, guidelines,
2-8
removing, 2-14
E
expansion board
full length board card guide,
2-20
expansion slot
identifying PCI, 2-16
external SCSI connector, 1-3
F
front bezel
proper handling, 2-9
H
headphone connector, 1-3
heatsink, 2-22, 2-23, 2-24
I
installing
Pentium processor, 2-24
RIMMs, 2-6, 2-7
Intel Pentium processor
installing, 2-24
K
keyboard
connector, 1-3
using Windows logo keys, 1-11
M
memory
configuration requirements, 2-5
installing additional, 2-5
installing RIMMs, 2-6, 2-7
maximum, 2-5
memory installation guidelines, 2-5
memory modules
installing, 2-5
microphone connector, 1-3
minitower configuration
changing to desktop
illustrated, 1-7
monitor connector, 1-3
mouse
connector, 1-3
Compaq Deskpro Workstation AP250 Hardware Reference Guide I-1
P
R
Pentium processor
installing, 2-24
power cord
connector, 1-3
power-on light, 1-2
processor/heatsink assembly, 2-22,
2-23, 2-24
removing
workstation access panel, 2-3
RIMMs
important guidelines, 2-5
RIMMs (RAMBUS inline memory
modules)
installing, 2-5
S
SCSI connector, 1-3
serial number, 1-11
U
USB connector, 1-3
W
workstation access panel
removing, 2-3
I-2 Index
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