Compaq 141536-002 - Deskpro EN - MT RAMBUS Operating and maintenance manual

Hardware Reference Guide
Compaq Deskpro EN Series of Personal Computers
Slim Desktop Models
178171-002

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Hardware Reference Guide
Compaq Deskpro EN Series
of Personal Computers
Slim Desktop Models

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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, 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. Celeron and MMX are
trademarks of Intel Corporation.
All other product names mentioned herein may be trademarks or registered trademarks of their
respective companies. Printed in U.S.A.
The following words and symbols mark special messages throughout this guide:
WARNING: Text set off in this manner indicates that failure
to follow directions could result in bodily harm or loss of life.
CAUTION: Text set off in this manner indicates that failure
to follow directions could result in damage to equipment or
loss of information.
Hardware Reference Guide
Compaq Deskpro EN Series of Personal Computers
Slim Desktop Models
First Edition (October 2000)
Part Number 178171-002
Compaq Computer Corporation

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CONTENTS
chapter 1
Installation Guidelines
Installation Sequence ............................................................................................................... 1-1
When to Reconfigure the Computer......................................................................................... 1-3
chapter 2
Hardware Upgrades
Serviceability Features............................................................................................................. 2-1
Removing the Access Panel ............................................................................................... 2-1
Rotating the Drive Cage..................................................................................................... 2-3
Internal Components (Intel 815e Chipset) ............................................................................... 2-4
Installing Additional Memory.................................................................................................. 2-5
DIMMs............................................................................................................................... 2-5
Memory Module Installation.............................................................................................. 2-5
Installing an Expansion Card ................................................................................................... 2-7
Removing an Expansion Slot Cover................................................................................... 2-7
Removing or Installing a PCI Card .................................................................................... 2-8
Installing Additional Drives................................................................................................... 2-10
Removing a Blank Drive Bezel........................................................................................ 2-10
Installing a Diskette, CD-ROM, DVD-ROM, or Tape Drive........................................... 2-11
Installing a Hard Drive..................................................................................................... 2-13
Removing a CD-ROM Drive from the Drive Cage ............................................................... 2-16
Removing a Diskette Drive from the Drive Cage .................................................................. 2-17
Removing a Hard Drive from the Drive Cage ....................................................................... 2-18
Smart Cover Lock.................................................................................................................. 2-20
Using the Smart Cover FailSafe Key ............................................................................... 2-20

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appendix a
Specifications .................................................................................................................................... A-1
appendix b
Hard Drive Installation Guidelines
Using the Cable-Select Feature with Ultra ATA Devices........................................................B-1
Installing SCSI Devices ...........................................................................................................B-2
Guidelines for Installing Optional SCSI Devices...............................................................B-2
Cabling for Optional SCSI Devices ...................................................................................B-4
Using SCSISelect with SCSI Devices ................................................................................B-5
appendix c
Battery Replacement..........................................................................................................................C-1
appendix d
Security Lock Provisions
Installing a Cable Lock ........................................................................................................... D-1
appendix e
Electrostatic Discharge
Preventing Electrostatic Damage .............................................................................................E-1
Grounding Methods .................................................................................................................E-2
appendix f
Routine Computer Care and Shipping Preparation
Routine Computer Care ........................................................................................................... F-1
CD-ROM Drive Precautions.................................................................................................... F-2
Operation............................................................................................................................F-2
Cleaning ............................................................................................................................. F-2
Safety .................................................................................................................................F-2
Shipping Preparation................................................................................................................ F-3
Index .....................................................................................................................................................I-1

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chapter 1
INSTALLATION GUIDELINES
This guide explains how to remove the computer cover or access panel
and install the following optional equipment upgrades:
 Additional system memory
 Expansion card
 Optional drive
 Security lock
 Replacement battery
This chapter includes information about the general installation
sequence for Deskpro personal computers, and about when to
reconfigure the computer to ensure that it recognizes the newly installed
equipment.
Installation Sequence
It is very important that you follow this sequence of steps to ensure the
proper installation of any optional equipment.
1. If your computer includes the Smart Cover Lock feature and you
have set the lock, use Computer Setup to unlock the lock and
disable the Smart Cover Sensor.
For more information about Computer Setup, refer to the Computer
Setup guide.

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2. 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.
!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 computer or optional equipment. 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.
3. Open the computer by removing its outside cover. Refer to the
procedures for removing the computer cover or access panel.
4. Install any optional equipment. Refer to the applicable sections of
this guide or to the documentation provided with the optional
equipment for instructions.
5. Replace the computer cover.
6. Turn on the monitor, computer, and any devices you want to test.
7. Reconfigure the computer, if necessary. Refer to the Computer
Setup guide for instructions about using Computer Setup.
If you normally lock the Smart Cover Lock, use Computer Setup to
relock the lock and enable the cover removal sensor.

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When to Reconfigure the Computer
System configuration is the process of specifying the devices and
programs that make up a computer system. When you add or remove
optional equipment, the computer must be reconfigured to recognize
these changes.
Windows 95 and later operating systems automatically recognize all
Plug and Play devices installed. However, if the device is not a Plug and
Play device or is not automatically detected after installation, follow
these instructions:
 In Windows 95 and later operating systems, select the Add New
Hardware icon in the Control Panel and follow the instructions on
the screen.
 To reconfigure the computer in Windows NT version 4.0, use the
software utility provided with the newly installed hardware.

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chapter 2
HARDWARE UPGRADES
Serviceability Features
Your computer includes features that make it easier to upgrade and
service.
Removing the Access Panel
The quick release cover latches, located near the rear on each side of
the unit, allow easy removal of the access panel without the use of tools
or thumbscrews.
!WARNING: Before removing the computer cover, ensure that the
computer is turned off and that the power cord is disconnected from
the electrical outlet.
 If you have not already done so, you will need to loosen the
silver shipping thumbscrew from the center of the rear panel
before removing the cover.
1. If you have locked the Smart Cover Lock, use Computer Setup to
unlock the lock and disable the Smart Cover Sensor.
2. Shut down the operating system properly, then turn off the
computer and any external devices.

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3. Disconnect the power cord from the power outlet.
4. Loosen the retaining screw located on the back of the unit
 .
5. Slide the cover latches on the sides near the back of the
computer
 .
6. Lift up the back of the access panel and pull it toward the back of
the unit about 1 inch (2.5 cm) so the tabs on the front of the access
panel clear the case
 . Lift the access panel up and off the unit.
Removing the Access Panel
 The configuration label located inside the computer cover
provides additional information.
Another label located inside the computer chassis provides
information about diagnosing computer conditions using the
power and hard drive LEDs.

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Rotating the Drive Cage
The rotating drive cage allows access to all drive bays for easy
installation of additional drives, requiring no drive rails or brackets.
With the drive cage rotated out from the chassis, you can easily connect
the drive power and signal cables.
 When installing optional drives, you must install guide screws
to ensure the drive will line up correctly in the drive cage.
Compaq has provided extra guide screws, installed in the
bottom of the computer chassis, next to the power supply.
!WARNING: Before removing the access panel, ensure that the
computer is turned off and that the power cord is disconnected from
the electrical outlet.
1. If you have locked the Smart Cover Lock, use Computer Setup to
unlock the lock and disable the Smart Cover Sensor.
2. Shut down the operating system properly, then turn off the
computer and any external devices.
3. Disconnect the power cord from the power outlet.
4. Remove the access panel.
5. Grasp the back of the drive cage and rotate it to its upright
position
 . The cage remains connected to the chassis.
Rotating the Drive Cage to an Upright Position

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Internal Components (Intel 815e Chipset)
Internal Components in Intel 815e–Based Desktop Models
 Cable lock (optional)
 AGP graphics slot
 Smart Cover Lock
 Processor
 Power supply
 Dual-inline memory module (DIMM) sockets
 Primary hard drive
 Diskette drive
 CD-ROM drive
 PCI expansion slots
 Speaker

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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 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, unbuffered PC100– or 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.
The Intel 815e chipset supports both PC100 and PC133 SDRAM
DIMMs. PC133 DIMMs should be used for optimal performance. If
both PC100 and PC133 SDRAM DIMMs are installed in a computer,
the system memory will run at the lower 100Mhz speed. Some
configurations of PC133 SDRAMs may run at 100Mhz, instead of
133Mhz.
Memory Module Installation
CAUTION: Your memory module sockets have gold metal contacts.
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.
CAUTION: When handling a memory module, be careful not to touch
any of the contacts. Doing so may damage the module.

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1. If you have locked the Smart Cover Lock, use Computer Setup to
unlock the lock and disable the Smart Cover Sensor.
2. Shut down the operating system properly, then turn off the
computer and any external devices, then disconnect the power cord
from the power outlet.
3. Remove the access panel 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.
4. Open both latches of the memory module socket  , and insert the
memory module into the socket
 .
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
 .
Installing a DIMM

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Installing an Expansion Card
Your computer contains expansion slots, as shown in the “Internal
Components”section of this chapter. Each slot can accommodate an
expansion card up to 6.88 inches (17.48 cm) in length.
Removing an Expansion Slot Cover
1. If you have locked the Smart Cover Lock, use Computer Setup to
unlock the lock and disable the Smart Cover Sensor.
2. Shut down the operating system properly, turn off the computer
and any external devices, then disconnect the power cord from the
power outlet.
3. Remove the access panel.
4. Locate the correct vacant expansion card slot on the back of the
computer.
5. Remove the screw at the top of the expansion slot cover, then
remove the expansion slot cover from the slot as illustrated.
Removing a Screw and Expansion Slot Cover

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Removing or Installing a PCI Card
1. If you have locked the Smart Cover Lock, use Computer Setup to
unlock the lock and disable the Smart Cover Sensor.
2. Shut down the operating system properly, turn off the computer
and any external devices, then disconnect the power cord from the
power outlet.
3. Remove the access panel.
If installing an expansion card, skip to step 9.
4. To remove an expansion card, disconnect any cables attached to the
expansion card.
5. Remove the screw at the top 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.
7. Store the card in anti-static packaging.
8. Install an expansion slot cover or new expansion card to close the
open slot.
If not installing a new expansion card, skip to step 13.
9. To install a new expansion card in an open slot, remove the
expansion slot cover.

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10. Slide the expansion card into the expansion slot and press it firmly
into place.
Removing or Installing an Expansion Card
 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.
11. Replace the screw at the top of the expansion slot.
12. Replace the access panel.
13. Connect external cables to the installed card, if needed.
14. Reconfigure the computer, if necessary. Refer to the Computer
Setup Guide for instructions about using Computer Setup.
If you normally lock the Smart Cover Lock, use Computer Setup to
relock the lock and enable the Smart Cover Sensor.

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Installing Additional Drives
When installing additional drives, follow these guidelines:
 Use the green pull tabs to disconnect the diskette and hard drive
cables from the drives.
 For optimal performance, connect hard drives to the primary IDE
controller. Connect expansion devices, such as IDE CD-ROM,
tape, and diskette drives to the secondary controller.
 You must install guide screws to ensure the drive will line up
correctly in the drive cage. Compaq has provided extra guide
screws, installed in the bottom of the computer chassis, next to the
power supply. Some options use M3 metric thread hardware. The
Compaq-supplied metric screws are black.
Removing a Blank Drive Bezel
1. If you have locked the Smart Cover Lock, use Computer Setup to
unlock the lock and disable the Smart Cover Sensor.
2. Shut down the operating system properly, turn off the computer
and any external devices, then disconnect the power cord from the
electrical outlet.
3. Remove the access panel and set it on a protected work surface.
4. Squeeze together the release catches
 to release the bezel blank,
then remove the bezel blank
 .
Removing a Drive Bezel

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Installing a Diskette, CD-ROM, DVD-ROM, or Tape Drive
1. If you have locked the Smart Cover Lock, use Computer Setup to
unlock the lock and disable the Smart Cover Sensor.
2. Shut down the operating system properly, turn off the computer
and any external devices, disconnect the power cord from the
power outlet, and remove the computer cover.
3. Remove the bezel blank from the front bezel.
4. If you are installing a diskette drive, rotate the drive cage to the
upright position.
5. Install two guide screws on each side of the drive.
 Some options use M3 metric thread hardware. Extra guide
screws are provided on the bottom of the chassis, next to the
power supply. The Compaq-supplied metric screws are black.
6. Install the drive in the desired drive bay by sliding it into the slots
 and toward the front of the computer  .
 Be sure the guide screws line up with the guide slots in the
drive cage.
Installing an Optional Drive (may vary)

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7. If installing a CD-ROM, DVD-ROM, or tape drive, rotate the drive
cage to the upright position.
8. Connect the drive power and signal cables and, if it is a CD-ROM
drive, connect the audio cable. The other end of the audio cable
should be connected to the audio connector on the system board.
Connecting the Drive Cables
Connecting the Audio Cable to the Audio Connector on the System Board