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Hardware Reference Guide
Compaq Evo Desktop Family: Desktop
Models
Document Part Number: 243850-002
January 2002
This book provides basic information for upgrading this series of
computers.
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Standard Configuration Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1
Front Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
Rear Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3
Easy Access Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4
Easy Access Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5
Reprogramming the Easy Access Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5
Easy Access Paper Icon Insert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6
Windows Logo Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6
Special Mouse Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6
Serial Number Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–7
Serviceability Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Installation Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Removing the Computer Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3
Replacing the Computer Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4
Removing the Front Bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–5
Removing Bezel Blanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–5
Installing Additional Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–6
DIMMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–6
Installing or Removing an Expansion Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–9
Removing an Expansion Slot Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–9
Removing or Installing an Expansion Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–10
Drive Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–12
Removing a Drive from the Drive Bay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–13
Installing Additional Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–14
Installing a CD-ROM, DVD-ROM, or other Removable Storage Device . . . . . . 2–15
Installing a Hard Drive into a 3.5-inch Drive Bay . . . . . . . . . . . . . . . . . . . . . . . . 2–16
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Contents
Using the Cable-Select Feature with Ultra ATA Devices. . . . . . . . . . . . . . . . . . . . . . . B–1
Guidelines for Installing Ultra ATA Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–2
SCSI Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–3
Guidelines for Using SCSI Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–3
Guidelines for Installing Optional SCSI Devices. . . . . . . . . . . . . . . . . . . . . . . . . . B–5
SCSI Controllers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–5
SCSI Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–6
Using a SCSI Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–6
Using SCSISelect with SCSI Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–6
Choosing the Quiet Drive Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–7
Installing a Security Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–1
Preventing Electrostatic Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E–1
Grounding Methods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E–1
Routine Computer Care. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F–1
CD-ROM Drive Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F–2
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F–2
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F–2
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F–2
Shipping Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F–3
iv
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1
Product Features
Standard Configuration Features
The Compaq Evo™ Desktop features may vary depending on your
model. For a complete listing of the hardware and software installed
in your computer, run Compaq Diagnostics for Windows or the
INSPECT utility (available on some models). Instructions for using
these utilities are provided in the Troubleshooting Guide on the
Reference Library CD.
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Product Features
Front Panel Components
Front Panel Components
1
2
3
Diskette Drive Activity Light
Power Button
6
7
8
Hard Drive Activity Light
Microphone Connector (optional)
Diskette Eject Button
Universal Serial Bus (USB)
(optional)
4
5
CD-ROM Drive Busy Indicator
CD-ROM Eject Button
9
-
Stereo Headphone Jack (optional)
Power On Light
1–2
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Product Features
Rear Panel Components
Rear Panel Components
1
2
3
4
5
6
Power Cord Connector
Voltage Select Switch
Keyboard Connector
Mouse Connector
7
8
9
-
q
Parallel Port Connector
Microphone Connector
Line-In Audio
Line-Out Audio
Universal Serial Bus (USB)
RJ-45 Connector
Serial Connector
Å WARNING: To reduce the risk of electric shock or damage to the equipment:
ꢀ
ꢀ
ꢀ
Do not disable the power supply cord grounding plug. The grounding
plug is an important safety feature.
Plug the power cord into a grounded (earthed) electrical outlet that
is easily accessible at all times.
Disconnect the power from the computer by unplugging the power
cord from either the electrical outlet or the computer.
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Product Features
Easy Access Keyboard
Compaq Easy Access Keyboard Components
1
2
Ctrl Key
Used in combination with another key; its effect
depends on the application software you are using.
Windows Logo Key*
Used to open the Start menu in Microsoft Windows.
Used in combination with other keys to perform other
functions.
3
4
Alt Key
Used in combination with another key; its effect
depends on the application software you are using.
Application Key*
Used (like the right mouse button) to open pop-up
menus in a Microsoft Office application. May perform
other functions in other software applications.
5
Internet Keys
Provides quick access to specific Internet destinations.
1–4
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Product Features
Compaq Easy Access Keyboard Components (Continued)
6
Editing Keys
Includes the following: Insert, Home, Page Up, Delete,
End, and Page Down.
✎
Holding down Ctrl and Alt while pressing Delete
allows you to restart your computer.
7
8
9
Num Lock light
Caps Lock light
Scroll Lock light
Indicates whether the Num Lock feature is on or off.
Indicates whether the Caps Lock feature is on or off.
Indicates whether the Scroll Lock feature is on or off.
*Keys available in select geographic regions.
Easy Access Software
Your Easy Access Keyboard Buttons are programmed to default
assignments. The pre installed Easy Access Software allows you to
reprogram the Easy Access Buttons to reflect your personal
preferences. The buttons can be reprogrammed to any program or
service of your choice or to any Web site (URL).
Reprogramming the Easy Access Buttons
The Easy Access Keyboard icon is located on the Windows desktop
status bar. Refer to the Readme-user.txt file for instructions about
reprogramming the Easy Access Buttons.
Locking and Unlocking the Easy Access Buttons
The System Administrator can lock and unlock the Easy Access
Buttons. Once locked, the buttons can only be reprogrammed by
modifying the .bcf file. For administrative privileges, which require
control of the Easy Access Button destinations, refer to the
Readme-admin.txt file.
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Product Features
Easy Access Paper Icon Insert
The paper icon insert functions as a visual aid in identifying the
programmed destination of each Easy Access Button. Whenever you
reprogram an Easy Access Button, use the Paper Insert Template
document to select and print an icon that reflects the new button
assignment. The Paper Insert Template.doc is installed, by default,
under C:\Program files\Compaq\Easy Access Keyboard.
For proper alignment, the spacing around the icons may require
adjustment.
Windows Logo Key
Use the Windows Logo Key in combination with other keys to
perform certain functions available in the Windows operating
systems.
Windows Logo Key + F1
Displays a pop-up menu for the selected object
Activates the next Taskbar button
Launches Explore My Computer
Launches Find Document
Windows Logo Key + Tab
Windows Logo Key + e
Windows Logo Key + f
Windows Logo Key + Ctrl + f
Windows Logo Key + m
Shift + Windows Logo Key + m
Windows Logo Key + r
Launches Find Computer
Minimizes all open applications
Undoes Minimize All
Displays the Run dialog box
Special Mouse Functions
Most software applications support the use of a mouse. The functions
assigned to each mouse button depend on the software applications
you are using.
1–6
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Product Features
Serial Number Location
Each computer has a unique serial number which may be located on
the cover top 1or the rear panel 2of the computer. Keep this number
available for use when contacting Compaq customer service for
assistance.
Serial Number Location
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Product Features
1–8
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Hardware Upgrades
Serviceability Features
Your computer includes features that make it easier to upgrade and
service.
Installation Sequence
It is very important that you follow this sequence of steps to ensure
the proper installation of any optional equipment. For more
information about Computer Setup, refer to the Computer Setup
Guide.
1. If the computer is already on, turn it off and disconnect the power
cord from the wall outlet.
WARNING: To reduce the risk of personal injury from electrical shock
and/or hot surfaces, be sure to disconnect the power cord from the wall
outlet, and allow the internal system components to cool before
touching.
Å
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.
Å
Ä
CAUTION: Static electricity can damage the electrical components of
the computer or optional equipment. Before beginning these
procedures, ensure that you are discharged of static electricity by briefly
touching a grounded metal object. See Appendix E, “Electrostatic
Discharge,” for more information.
2. Open the computer by removing its outside cover. See the
procedures for removing the computer cover.
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3. Install any optional equipment. See the applicable sections of this
guide or to the documentation provided with the optional
equipment for instructions.
4. Replace the computer cover.
5. Turn on the monitor, computer, and any devices you want to test.
6. Reconfigure the computer, if necessary. Refer to the Computer
Setup Guide for instructions about using Computer Setup.
2–2
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Removing the Computer Cover
To remove the computer cover:
1. Shut down the operating system properly, then power off the
computer and any external devices.
2. Disconnect the power cord from the power outlet, and disconnect
any external devices.
CAUTION: Before removing the computer cover, ensure that the
computer is turned off and that the power cord is disconnected from the
electrical outlet.
Ä
3. Loosen the two captive thumbscrews that secure the cover to the
computer chassis.
4. Slide the cover back about 1 inch (2.5 cm), then lift it up and off
the unit.
Removing the Computer Cover
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Replacing the Computer Cover
To replace the computer cover:
1. Hold the cover over the chassis, then rest the guide tabs located
inside the cover on the diagonal ramps at the rear of the chassis.
2. Slide the cover along the ramps and into place on the chassis.
3. Tighten the two captive thumbscrews.
Replacing the Computer Cover
2–4
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Removing the Front Bezel
1. Shut down the operating system properly, then power off the
computer and any external devices. Disconnect the power cord
from the power outlet and disconnect any external devices.
2. Remove the computer cover.
3. Pull up on the two release tabs, then rotate the front bezel away
from the chassis to release it.
Removing 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.
✎
Removing Bezel Blanks
1. Shut down the operating system properly, then power off the
computer and any external devices. Disconnect the power cord
from the power outlet and disconnect any external devices.
2. Remove the computer cover.
3. Remove the front bezel.
4. Gently pinch the release mechanism, then remove the desired
bezel blank.
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Installing Additional Memory
The computer comes with Synchronous dynamic random access
memory (SDRAM) dual inline memory modules (DIMMs).
DIMMs
The memory sockets on the Intel 815E and 845 chipset-based system
board can be populated with industry-standard DIMMs. These
memory module slots are populated with at least one preinstalled
memory module. To achieve the maximum memory support, you may
be required to replace the preinstalled DIMM with a higher capacity
DIMM.
For proper system operation, the DIMMs must be industry-standard
168-pin, PC133- compliant SDRAM DIMMs, depending on the
model. The SDRAM DIMMs must support CAS Latency 2 or 3
(CL = 2 or CL = 3). They must also contain the mandatory Joint
Electronic Device Engineering Council (JEDEC) Serial Presence
Detect (SPD) information. DIMMs constructed with x4 SDRAM are
not supported; the system will not start using unsupported DIMMs.
CAUTION: Some models support ECC memory and some support
non-ECC memory. For those systems that do support ECC, Compaq
does not support mixing ECC and non-ECC memory. Doing so will
cause the system to blink the NUMLOCK LED on the keyboard
continuously and, if a speaker is installed in the system, there will be a
short beep followed by 2 long beeps. In addition, the system will not
boot the operating system.
Ä
2–6
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Installing DIMMs
CAUTION: Your memory module sockets have gold metal contacts.
Ä
When upgrading your memory, it is important to use memory modules
with gold metal contacts to prevent corrosion and/or oxidation resulting
from having incompatible metals in contact with each other.
CAUTION: Static electricity can damage the electronic components of
the computer or optional cards. Before beginning these procedures,
ensure that you are discharged of static electricity by briefly touching a
grounded metal object. Refer to Appendix E, "Electrostatic Discharge,"
for more information.
Ä
Ä
CAUTION: When handling a memory module, be careful not to touch
any of the contacts. Doing so may damage the module.
1. Shut down the operating system properly, then power off the
computer and any external devices, then disconnect the power
cord from the power outlet.
2. Remove the cover and locate the memory module sockets.
WARNING: To reduce risk of personal injury from hot surfaces, allow
the internal system components to cool before touching.
Å
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3. Open both latches of the memory module socket 1, and insert the
memory module into the socket 2.
Installing a DIMM
Begin by installing a module into the socket nearest the
preinstalled module, and install the modules following the
numerical order of the sockets.
A memory module can be installed in only one way. Match the
notch on the module with the tab on the memory socket. Push the
module down into the socket, ensuring that the module is fully
inserted and properly seated 3.
2–8
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Installing or Removing an Expansion Card
Removing an Expansion Slot Cover
1. Shut down the operating system properly, then power off the
computer and any external devices, then disconnect the power
cord from the power outlet.
2. Remove the computer cover and locate the correct vacant slot in
the computer chassis.
3. Remove the screw securing the slot cover, then remove the
expansion slot cover from the slot as illustrated.
Removing an Expansion Slot Cover
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Removing or Installing an Expansion Card
1. Shut down the operating system properly, then power off the
computer and any external devices, then disconnect the power
cord from the power outlet.
2. Remove the computer cover.
3. If installing an expansion card, skip to step 8.
4. To remove an installed expansion card, disconnect any cables
attached to the expansion card.
5. Remove the screw at the side of the expansion slot.
6. Hold the card at each end and carefully rock it back and forth
until the connectors pull free from the slot. Be sure not to scrape
the card against other components.
Removing an Expansion Card
2–10
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7. Store the card in anti-static packaging.
8. Install an expansion slot cover or new expansion card to close the
open slot.
9. If not installing a new expansion card, skip to step 11.
10. To install a new expansion card in an open slot, remove the
expansion slot cover.
11. Slide the expansion card into the expansion slot and press it
firmly into place.
When you install an expansion card, make sure you press firmly on
the card so that the whole connector seats properly in the expansion
card slot.
✎
12. Replace the screw at the side of the expansion slot.
13. Connect external cables to the installed card, if needed. Connect
internal cables to the system board, if needed.
14. Replace the computer cover.
15. Reconfigure the computer, if necessary.
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Drive Positions
1
One standard 3.5-inch, 1.44-MB diskette drive mounted
with a drive adapter in the 5.25-inch, one-third height bay
(labeled as drive bay 3)
2 3
4 5
Two internal 3.5-inch, one-third height bays for hard
drives (labeled as drive bays 4 and 5)
Two 5.25-inch, half-height bays for optional drives
(labeled as drive bays 1 and 2)
To verify the type and size of the storage devices installed in
your computer, run Compaq Computer Setup. Refer to the Computer
Setup Guide for more information.
Drive bay numbers are stamped on the chassis, behind the front bezel.
✎
2–12
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