Compaq Presario 7800 Series, Presario 5900T Maintenance & Service Manual

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Product Description

Troubleshooting

Illustrated Parts

Removal & Replacement

Jumpers & Switches

Specifications

Welcome to the Presario 7800 Series and 5900T Maintenance and Service Guide. This online guide is
designed to serve the needs of those whose job it is to repair Compaq products. Many of the components of the
hardcopy MSG are contained in this online guide. The

Notice contains the copyright and trademark information.

The Preface shows symbol conventions, Technician Notes and Serial Number locations on the unit.

Download a ZIP file of the complete MSG to local hard drive.

This MSG will be periodically maintained and updated as needed.
To report a technical problem, contact your Regional Support Center or IM Help Center.

For content comments or questions, contact the Editor.

Top

privacy and legal statement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

Notice

The information in this guide is subject to change without notice.

COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR
TECHNICAL OR EDITORIAL ERRORS OR OMISSIONS CONTAINED
HEREIN, NOR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES
RESULTING FROM THE FURNISHING, PERFORMANCE, OR USE OF THIS
MATERIAL.

This guide contains information protected by copyright. No part of this
guide may be photocopied or reproduced in any form without prior
written consent from Compaq Computer Corporation.

© 1998 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.

Compaq, Presario Registered U. S. Patent and Trademark Office.

Microsoft, MS-DOS, and Windows are registered trademarks of
Microsoft Corporation.
Windows 95 is a trademark of Microsoft Corporation.
Windows 98 is a trademark of Microsoft Corporation.

The software described in this guide is furnished under a license
agreement or nondisclosure agreement. The software may be used or
copied only in accordance with the terms of the agreement.

Product names mentioned herein may be trademarks and/or registered
trademarks of their respective companies.

Maintenance and Service Guide

Compaq Presario 7800 Series and 5900T
Personal Computers

© 2000 Compaq Computer Corporation

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Symbols

The following words and symbols mark special messages throughout this guide.

WARNING: Text set off in this manner indicates that failure to follow directions in

the warning could result in bodily harm or loss of life

.

CAUTION: Text set off in this manner indicates that failure to follow directions in the
caution could result in damage to equipment or loss of data.

IMPORTANT:

Text set off in this manner presents clarifying information or
specific instructions.

NOTE:

Text set off in this manner presents commentary, sidelights,
or interesting points of information.

Technician Notes

WARNING: Only authorized technicians trained by Compaq should repair this

equipment. All troubleshooting and repair procedures are detailed to allow only
subassembly/module level repair. Because of the complexity of the individual boards
and subassemblies, the user should not attempt to make repairs at the component
level or to make modifications to any printed circuit board. Improper repairs can
create a safety hazard. Any indications of component replacement or printed circuit
board modifications may void any warranty.

Serial Number

When requesting information or ordering spare parts, the computer serial number should be
provided to Compaq. The serial number can be found on the back of the computer next to the fan

grill and on the front bezel behind the drive access door.

Locating Additional Information

The following documentation is available to support this product:

● Compaq Presario documentation set

● Introducing Windows 98 Guide

● Service Training Guides

● Compaq Service Advisories and Bulletins

● Compaq QuickFind

● Compaq Service Quick Reference Guide

● Compaq Help Center

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Product Description

Product Description

Models and Features
CPU Controls & Lights
Keyboards
CPU Back Connectors
Digital Creativity

Imaging Center (DCIC)
Power Management
Power Cord

Requirements

This section describes the models and features of the Compaq
Presario 7800 Series of personal computers. Use the navigation bar
at left to find specific features.

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Troubleshooting

Troubleshooting

Clearing CMOS
Power-On Self-Test (POST)
Diagnostics Software
Troubleshooting Without Diagnostics

This section provides troubleshooting information for
Compaq Presario 7800 Series Personal Computers.
Power-On Self-Test (POST) messages appear in tables.

The message and code tables include a description of the
error, the probable cause, and the recommended action
that should be taken to resolve the error condition.

Adherence to the procedures and precautions described
in this section is essential for proper service.

privacy and legal statement

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Illustrated Parts

System Unit
Mass Storage
Cables
Boards
Modems
Keyboards/Mouse
Monitors
Return Kits
Documentation

This section provides illustrated parts and a reference for
spare parts numbers for Compaq Presario 7800 Series
Personal Computers.

When requesting information or ordering spare parts, the
computer

serial number should be provided to Compaq. The

serial number is displayed on the back of the chassis and
behind the drive cover.

privacy and legal statement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Removal and Replacement

Removal Sequence

Preparation for Disassembly
Serial Number Location
Chassis
Mass Storage Devices
Button Board
Digital Creativity Imaging Center
Option Card Retainer
Graphics Board
PCI Cards
Memory
Processor
RTC Battery
System Board Cables
System Board
Back I/O Panel
Power Supply

This chapter provides general service information for Compaq Presario 7800
Series Personal Computers. Adherence to the procedures and precautions
described in this chapter is essential for proper service.

The topics discussed in this section include the following:

● Electrostatic Discharge

● Generating Static

● Preventing Electrostatic Damage to Equipment

● Preventing Damage to Drives

● Grounding Methods

● Grounding Workstations

● Grounding Equipment

● Recommended Materials and Equipment

● Tool Requirements

● Screws

● Cables and Connectors

Electrostatic Discharge

A sudden discharge of static electricity from a finger or other conductor can
destroy static-sensitive devices or microcircuitry. Often the spark is neither felt
nor heard, but damage occurs. An electronic device exposed to electrostatic
discharge (ESD) may not be affected at all and will work perfectly throughout a
normal cycle. Or it may function normally for a while, then degrade in the internal
layers, reducing its life expectancy.

Networks built into many integrated circuits provide some protection, but in many
cases, the discharge contains enough power to alter device parameters or melt
silicon junctions.

Top

Generating Static

The accompanying table shows typical electrostatic voltages generated by
different activities.

Typical Electrostatic Voltages

Relative Humidity

Event 10% 40% 55%

Walking across carpet 35,000 V 15,000 V 7,500 V
Walking across vinyl floor 12,000 V 5,000 V 3,000 V
Motions of bench worker 6,000 V 800 V 400 V
Removing DIPS from plastic tubes 2,000 V 700 V 400 V
Removing DIPS from vinyl trays 11,500 V 4,000 V 2,000 V
Removing DIPS from Styrofoam 14,500 V 5,000 V 3,500 V
Removing bubble pack from PCBs 26,000 V 20,000 V 7,000 V
Packing PCBs in foam-lined box 21,000 V 11,000 V 5,000 V
NOTE: 700 volts can degrade a product.

Top

Preventing Electrostatic Damage to Equipment

Many electronic components are sensitive to ESD. Circuitry design and structure
determine the degree of sensitivity. The following proper packaging and
grounding precautions are necessary to prevent damage:

● Protect all electrostatic parts and assemblies with conductive or approved

containers or packaging.

● Keep electrostatic sensitive parts in their containers until they arrive at

static-free stations.

● Place items on a grounded surface before removing them from their

container.

● Always be properly grounded when touching a sensitive component or

assembly.

● Place reusable electronic-sensitive parts from assemblies in protective

packaging or conductive foam.

● Use transporters and conveyors made of antistatic belts and metal roller

bushings. Mechanized equipment used for moving materials must be wired
to ground and proper materials selected to avoid static charging. When
grounding is not possible, use an ionizer to dissipate electric charges.

The accompanying table shows typical static-shielding protection levels afforded
by different protective packaging materials.

Static-Shielding Protection Levels

Method Voltages

Antistatic Plastic 1,500
Carbon-Loaded Plastic 7,500
Metallized Laminate 15,000

Top

Preventing Damage to Drives

To prevent static damage to hard drives, use the following precautions:

● Handle drives gently, using static-guarding techniques.

● Store drives in the original shipping containers.

● Avoid dropping drives from any height onto any surface.

● Handle drives on surfaces that have at least 1 inch of shock-proof foam.

● Always place drives PCB-assembly side down on the foam.

Top

Grounding Methods

The method for grounding must include a wrist strap or a foot strap at a grounded
workstation. When seated, wear a wrist strap connected to a grounded system.
When standing, use foot straps and a grounded floor mat.

Top

Grounding Workstations

To prevent static damage at the workstation, use the following precautions:

● Cover the workstation with approved static-dissipative material.

● Provide a wrist strap connected to the work surface and properly grounded

tools and equipment.

● Use static-dissipative mats, heel straps, or air ionizers to give added

protection.

● Handle electrostatic sensitive components, parts, and assemblies by the

case or PCB laminate. Handle them only at static-free workstations.

● Avoid contact with pins, leads, or circuitry.

● Turn off power and input signals before inserting and removing connectors

or test equipment.

● Use fixtures made of static-safe materials when fixtures must directly

contact dissipative surfaces.

● Keep work area free of nonconductive materials such as ordinary plastic

assembly aids and Styrofoam.

● Use field service tools that are conductive, such as cutters, screwdrivers,

vacuums.

● Use a portable field service kit with a static-dissipative vinyl pouch that

folds out of a work mat. Also use a wrist strap and a ground cord for the
work surface. Ground the cord to the chassis of the equipment undergoing
test or repair.

Top

Grounding Equipment

Use the following equipment to prevent static electricity damage to the
equipment:

● Wrist straps are flexible straps with a minimum of 1 mega ohm ± 10%

resistance to the ground cords. To provide proper ground, a strap must be
worn snug against the skin. On grounded mats without banana-plug
connectors, connect a wrist strap with alligator clips.

● Heelstraps/toestraps/bootstraps can be used at standing workstations and

are compatible with most types of boots and shoes. On conductive floors or
dissipative floor mats, use them on both feet with a minimum of 1 mega
ohm resistance between operator and ground. To be effective, the
conductive strips must be worn in contact with the skin.

Top

Recommended Materials and Equipment

Other materials and equipment that are recommended for use in preventing static
electricity include:

● Antistatic tape

● Antistatic smocks, aprons, or sleeve protectors

● Conductive bins, and other assembly or soldering aids

● Conductive foam

● Conductive tabletop workstations with ground cord of 1 mega ohm

of resistance

● Static-dissipative table or floor mats with hard tie to ground

● Field service kits

● Static awareness labels

● Wrist straps and footwear straps providing 1 mega ohm (±10%) resistance

● Material-handling packages

● Conductive plastic bags

● Conductive plastic tubes

● Conductive tote boxes

● Metal tote boxes

● Opaque shielding bags

● Transparent, metallized shielding bags

● Transparent shielding tubes

Top

Tool Requirements

● Torx T-8, T-10, and T-15 screwdrivers

● Needle-nose pliers

● Flat-blade screwdriver

● Diagnostics software

Top

Screws

The screws used in these products are not interchangeable. If an incorrect screw
is used during the reassembly process, it could cause damage to the unit.
Compaq strongly recommends that all screws removed during the disassembly
process be kept with the part that was removed, then returned to their proper
locations.

IMPORTANT:

As each subassembly is removed from the computer, it should be
placed away from the work area to prevent damage.

●

Top

Cables and Connectors

Most cables used throughout the unit are ribbon cables. These cables must be
handled with extreme care to avoid damage.

Apply only the tension required to seat or unseat the cables during insertion or
removal from the connector. Handle cables by the connector whenever possible.
In all cases, avoid bending, twisting, or tearing the cables, and ensure that cables
are placed in such a way that they cannot be caught or snagged by parts being
removed or replaced.

CAUTION: When servicing these computers, ensure that cables are
placed in their proper location during the reassembly process.
Improper cable placement can cause severe damage to the unit.

Optical Drive

Digital Creativity Imaging Center

3.5-Inch Hard Drive

Zip Drive
Diskette Drive

Top

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Jumper and Switch Information

Jumper & Switch
Information

7800 and 5900T Models
with Pentium III System
Board

Mass Storage

3.5-Inch Hard Drive

5.25-Inch Hard Drive
DVD Drive
CD Drive

This section contains jumper and switch information for
system board jumpers, system I/O board connectors, and
Mass Storage drives.

Click on a selection on the left navigation bar for jumper
and switch information.

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Specifications

Specifications

System
Specifications

Video Memory
System Interrupts
System I/O
System Memory
System DMA
Power Supply
Diskette Drive
DVD Drive
IDE Hard Drives
Mouse
Fax/Modem
CD-RW Drive

Compaq Presario 7800 Series Personal Computer specifications are
listed in the following tables. Select the specification you are interested
in from the navigation bar in left column.

System Specifications

U. S. Outside U. S.

Dimensions

Height 19.0 in

482.60 mm

Depth 20.9 in

530.86 mm

Width 8.38 in

212.73 mm

Weight

31 lb

14.09 kg

Shipping Weight

Gross

41 lb 18.64 kg

Average Net

31 lb 14.09 kg

Input Requirements

Nominal Line Voltage

100 to 120 VAC 220 to 240

VAC

Range Line Voltage

90 to 132 VAC 180 to 264

VAC

Line Frequency

47 to 63 Hz 47 to 63 Hz

Input Current (S)

5.2 at 90 VAC 3.6 at 180
VAC

Input Current (A)

8.0 at 90 VAC 4.0 at 180
VAC

Power (watts)
Steady State (S)

200 W at 50° C
235 W at 25° C

200 W at
50° C
235 W at
25° C

Steady State (A)

200 W at 50° C
250 W at 25° C

200 W at
50° C
250 W at
25° C

Environmental Requirements
Temperature

Operating

50° to 95° F 10° to 35° C

Shipping

-4° to 140° F -20° to 60°
C

Humidity (noncondensing)

Operating

8% to 90% 8% to 90%

Non-operating

5% to 95% 5% to 95%

Maximum Altitude (unpressurized)

Operating

10,000 ft 3048 m

Nonoperating

30,000 ft 9144 m

Expansion Slots

5 PCI
1 AGP

*This number will increase if more bay/slots are occupied.

Top

Diamond Stealth III S540 Video Memory

Resolution Color Depth (bpp) Vertical Refresh (Hz)
640 × 480 8, 16, 32 60, 72, 75, 85, 160
800 × 600 8, 16, 32 60, 72, 75, 85, 160
1024 × 768 8, 16, 32 60, 72, 75, 85, 160
1152 × 864 8, 16, 32 75
1280 × 1024 8, 16

60, 75, 85, 100

1280 × 1024 32

60, 75, 85

1600 × 1200 8, 16

60, 75, 85

1600 × 1200 32

60

* The Compaq FP720 display supports a maximum resolution of 1024x768 and
only supports the 60 Hz refresh rate. The Compaq Presario MV520 Multimedia
Monitor supports a maximum resolution of 1024x768, which is displayed only at
the 60 Hz refresh rate. The Compaq Presario MV720 Multimedia Monitor
supports a maximum resolution of 1280x1024, which is displayed only at the 60
Hz refresh rate. The Compaq Presario MV920 Multimedia Monitor supports a
maximum resolution of 1600x1200, which is displayed at up to the 75 Hz
refresh rate.

Top

System Interrupts

Hardware IRQ System Function

IRQ 0 System Timer
IRQ 1 Keyboard
IRQ 2 Programmable Interrupt Controller
IRQ 3 ACPI IRQ Holder for PCI IRQ Steering; Conexant PCI Modem

Enumerator; NVIDIA GeForce 256; Creative SB Live!

IRQ 4 Communications Port (COM 1)
IRQ 5 Available
IRQ 6 Diskette Drive Controller
IRQ 7 ECP Printer Port (LPT 1)
IRQ 8 Real-Time Clock, System CMOS
IRQ 9 SCI IRQ used by ACPI bus
IRQ 10 ACPI IRQ Holder for PCI IRQ Steering; IEEE 1394 Controller
IRQ 11 ACPI IRQ Holder for PCI IRQ Steering; Accton EN1207D Series

PCI Fast Ethernet Adapter
IRQ 11 VIA Tech 3038 PCI to USB Universal Host Controller
IRQ 12 PS/2 Mouse
IRQ 13 Numeric Data Processor
IRQ 14 Primary IDE; PCI IDE Controller
IRQ 15 Secondary IDE; PCI IDE Controller

Top

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Product Description

Models and Features

The following tables list Compaq Presario 7800 Series Personal Computer models
and model-specific features.

Model

Processor

Speed
(MHz)

Memory

(MB)

Hard

Drive

(GB)

CD/DVD CD-RW

Video

Memory

(MB)

Fax/Modem

7800

PIII

500/100

64 15 40x n/a 16 S

7800

PIII

550/100

64 15 8x/10x/12xDVD n/a 16 S

7800

PIII

550/100

64 15 40x n/a 16 S

7800

PIII

600/133

64 17 8x/10x/12xDVD n/a 16 S

7800

PIII

667/133

128 20 8x/10x/12xDVD CD-RW 16 S

CTO

Options

Processor
Speed (MHz)

Memory

(MB)

Hard Drive

(GB)

CD/DVD

CD­RW

Video

Memory

(MB)

Fax/Modem

8x 16 or 32

NOTE:

Modem codes:
D = 6 Mb Digital DSL/56k V.90
E = 56k V.90
S = 56k V.90 International

Back to Product Description

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Product Description

CPU Controls and Lights

Description

1

CD or DVD Manual Eject Button

2

CD or DVD Drive Activity Light

3

CD or DVD Load/Eject Button

4

Diskette Drive Eject Button and Drive Activity
Light

5

Zip Drive Eject Button and Activity Light*

6

Hard Drive Activity Light

7

Power Button

8

Power Status Light
* On select models

Back to Product Description

privacy and legal statement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Product Description

Easy Access Internet Keyboard

Easy Access Buttons

Internet Suite Buttons and Keyboard

Lights

Easy Access Buttons

1

Play/Pause

2

Rewind/Previous track

3

Fast forward/Next
track

4

Stop

5

Eject

6

Print

7

Launch favorite
application

8

Volume down

9

Mute

10

Volume up

11

Sleep

Top

Internet Suite Buttons

and Keyboard Lights

1

Instant E-Mail

2

Community

3

My Presario

4

Instant Internet

5

Instant Search

6

Online Marketplace

7

Retail Central

8

Number Lock Light

9

Caps Lock Light

10

Scroll Lock Light

Top

Back to Product Description

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Product Description

CPU Back Connectors

Connector Pins

1

Power Connector

2

Scroll Mouse

3

Keyboard

4

Dual USB

5

Serial Port

6

Parallel Port

7

IEEE 1394 Connector

8

Game Port

9

Networking Interface Connector

10

Telephone line to wall outlet

11

Telephone line to telephone

12

Audio Line Out

13

Audio Line In

14

Microphone

15

SVGA Monitor Port

Back to Product Description

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Parallel

Serial

Universal Serial Bus
(USB)

Keyboard

Mouse

VGA Monitor

MIDI/Joystick

Line-in

Speaker/Headphone
Out

Microphone

Phone Line to Wall

Phone Line to
Phone

DVD-Drive Data
Cable

Modem

Connector Pin Assignments

This section contains the connector pin assignments for the Presario 7800 series
of personal computers.

Parallel Connector

Pin Signal Pin Signal

1 Strobe* 10 Acknowledge*
2 Data Bit 0 11 Busy
3 Data Bit 1 12 Paper Out
4 Data Bit 2 13 Select
5 Data Bit 3 14 Auto Linefeed*
6 Data Bit 4 15 Error*
7 Data Bit 5 16 Initialize Printer*
8 Data Bit 6 17 Select In*
9 Data Bit 7 18-25 Signal Ground
* = Active low

Back to Top

Serial Connector

Connector Pin Signal

1
2
3
4
5
6
7
8
9

Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Ready to Send
Clear to Send
Ring Indicator

Universal Serial Bus

Connector Pin Signal

1
2
3
4

- Data
+Data
Ground
+5 VDC

Keyboard

Connector Pin Signal

1
2
3
4
5
6

Data
Unused
Ground
+5 VDC
Clock
Unused

Mouse

Connector Pin Signal

1
2
3
4
5
6

Data
Unused
Ground
+5 VDC
Clock
Unused

Back to Top

VGA Monitor

Connector Pin Signal

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

Red Analog
Green Analog
Blue Analog
Volume Up
Ground
Ground Analog
Ground Analog
Ground Analog
+5 VDC
Ground
Volume Down
DDC Data
Horizontal Sync
Vertical Sync
DDC Clock

MIDI/Joystick

Connector Pin Signal

Ext13.gif (3492 bytes)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

+5 VDC
Fire A (1)
X-Axis (1)
GND
GND
Y-Axis (1)
Fire B (1)
+5 VDC
+5 VDC
Fire A (2)
X-Axis (2)
MIDI Out
Y-Axis (2)
Fire B (2)
MIDI In

Back to Top

Line In

Connector Connector

Stereo 1/8" Miniphone

Speaker/Headphone Out

Connector Connector

Stereo 1/8" Miniphone

Microphone

Connector Connector

Stereo 1/8" Miniphone

Phone Line to Wall Jack

Connector Pin Signal

ext15r.gif (1764 bytes)

1
2
3
4

Unused
Tip
Ring
Unused

Phone Line to Phone

Connector Pin Signal

ext15r.gif (1764 bytes)

1
2

3

4

Unused

Tip

Ring

Unused

Back to Top

DVD Drive Data Cable

Pin Signal Pin Signal

1 RESET 21 DMARK
2 GND 22 GND
3 DD7 23 -DIOW
4 DD8 24 GND
5 DD6 25 -DIOR
6 DD9 26 GND
7 DD5 27 IORDY
8 DD10 28 SPSYNC
9 DD4 29 -DMACK
10 DD11 30 GND
11 DD3 31 INTRQ
12 DD12 32 -IOCS16
13 DD2 33 DA0
14 DD13 34 -PDIA6
15 DD1 35 DA0
16 DD14 36 DAZ
17 DD0 37 -CS1FX
18 DD15 38 -C53FX
19 GND 39 -DASP
20 (KEY) 40 GNP

Internal Fax/Modem

Pin Signal Pin Signal

1 Unused 4 Tip
2 Unused 5 Unused
3 Ring 6 Unused

Back to Top

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Troubleshooting

Clearing CMOS

Password Jumper Location

If the power-on password
is not known, clearing
CMOS will disable the
power-on password. To
clear CMOS, complete the
following steps:

1.

Complete the

preparation for
disassembly.

2.

Remove the chassis.

3.

To disable the
password, move the
jumper (1) at JP1
from 1-2 to 2-3.

4.

Wait for 10 seconds.

5.

Move the jumper (1)
at JP1 from 2-3 to 1-

2.

6.

Replace the chassis
and perform the
appropriate
troubleshooting.

Back to Troubleshooting

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Troubleshooting

Power-On Self-Test (POST)

POST is a series of diagnostic tests that run automatically when the system is turned on. After
the computer is turned on, POST checks the following assemblies to ensure that the computer
system is functioning properly:

● Keyboard

● System board

● Memory modules

● Video memory

● Diskette drive

● Hard drive

● CD (or DVD) drive

● Power supply

POST also detects the type of mass storage devices installed in the computer.

If POST finds an

error in the system, an error condition is indicated by an audible or visual

message.

Back to Troubleshooting

privacy and legal statement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

POST (Power-On Self-Test) Error Messages

An error message displays if the POST encounters a problem. This self-test will run automatically each time the
system is powered on. The self-test will check all assemblies within the computer and report any errors found.

Click on the desired error code for the probable cause of the error and a recommended course of action.

Diskette Drive A or B Error Failing Bits nnn Fixed Disk Controller Failure

Extended RAM failed at offset nnn Fixed Disk 0 or 1 Failure Incorrect Drive A Type

Invalid NVRAM Media Type Keyboard Controller Error Keyboard Error

Operating System Not Found Parity Check 1 Parity Check 2

Real Time Clock Error System Battery is Dead System BIOS Shadowed

System Cache Error System CMOS Checksum Bad System RAM Failed at Offset, nnn

System Timer Error UMB Upper Limit Segment Address

nnn

Video BIOS Shadowed

Diskette Drive A or B Error

Probable Cause Recommended Action

Drive A: is present, but fails the BIOS POST diskette tests 1. Run Setup.

2. Replace the signal
cables.

3. Replace the drive.

Back to Top

Extended RAM failed at offset nnn

Probable Cause Recommended Action

Extended memory not working or not configured properly 1. Replace the memory

modules.

2. Replace the system
board.

Back to Top

Failing Bits nnn

Probable Cause Recommended Action

nnn is a map of the bits at the RAM address which failed the
memory test

1. Run Setup.

2. Replace the system
board.

Back to Top

Fixed Disk 0 or 1 Failure

Probable Cause Recommended Action

Hard drive is not working or configured properly 1. Run Setup.

2. Replace the signal cable.

3. Replace the hard drive.

Back to Top

Fixed Disk Controller Failure

Probable Cause Recommended Action

Hard drive is not working or configured properly 1. Run Setup.

2. Replace the system
board.

Back to Top

Incorrect Drive A Type

Probable Cause Recommended Action

Type of diskette drive A: not correctly identified 1. Run Setup.

2. Replace the diskette
drive.

Back to Top

Invalid NVRAM Media Type

Probable Cause Recommended Action

Problem with NVRAM (CMOS) access Replace the system board.

Back to Top

Keyboard Controller Error

Probable Cause Recommended Action

Keyboard, I/O keyboard controller
(on system board) or mouse error

1. Replace the keyboard.

2. Replace the mouse.

3. Replace the system
board.

Back to Top

Keyboard Error

Probable Cause Recommended Action

Keyboard, I/O keyboard controller
(on system board) or mouse error

1. Replace the keyboard.

2. Replace the mouse.

3. Replace the system
board.

Back to Top

Operating System Not Found

Probable Cause Recommended Action

Operating system cannot be located on
either drive A: or C:

Run Setup.

Back to Top

Parity Check 1

Probable Cause Recommended Action

Parity error found in the system bus 1. Run Setup.

2. Replace the memory
modules.

3. Replace the system
board.

Back to Top

Parity Check 2

Probable Cause Recommended Action

Parity error found in the I/O bus 1. Run Setup.

2. Replace the ISA board
(modem).

Back to Top

Real Time Clock Error

Probable Cause Recommended Action

Real-time clock fails BIOS test Replace the system board.

Back to Top

System Battery is Dead

Probable Cause Recommended Action

RTC battery is dead 1. Replace the RTC battery.

2. Run Setup.

Back to Top

System BIOS Shadowed

Probable Cause Recommended Action

System BIOS copied to Shadow RAM Replace the system board.

Status message only; no
action required.

Back to Top

System Cache Error

Probable Cause Recommended Action

RAM cache failed the BIOS test Run Setup.

Back to Top

System CMOS Checksum Bad

Probable Cause Recommended Action

CMOS is corrupted or modified incorrectly Run Setup.

Back to Top

System RAM Failed at Offset, nnn

Probable Cause Recommended Action

System RAM failed Replace memory modules.

Back to Top

System Timer Error

Probable Cause Recommended Action

DMA, timers, etc. Replace the system board.

Back to Top

UMB Upper Limit Segment Address nnn

Probable Cause Recommended Action

Displays the address nnn of the upper limit
of Upper Memory Blocks, indicating released segments of the
BIOS

Run Setup.
Status message only; no
action required.

Back to Top

Video BIOS Shadowed

Probable Cause Recommended Action

Video BIOS successfully copied to shadow RAM Run Setup.

Status message only; no
action required.

Back to Top

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Troubleshooting

Diagnostics Software

Two diagnostic software tools are available to assist in troubleshooting your Presario product:

● Compaq Diagnostics for Windows is preinstalled on your system. To access Diagnostics for

Windows, click Start, point to Settings, then select Control Panel, and then double-click
Compaq Diagnostics.

● Compaq Personal Computer Diagnostics, a DOS-based tool, is available for download from

the Compaq Web site at www.compaq.com.

Both tools provide general system information, verify system functionality, test the system, and
identify possible defective components. Compaq Diagnostics for Windows provides specific
recommended actions in the case of failure.

privacy and legal statement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &
Replacement

Jumpers & Switches Specifications

Troubleshooting

Troubleshooting Without Diagnostics

If you encounter some minor problem with the computer or software application, go through the
following checklist for possible solutions before running any of the Diagnostic utilities:

● Is the computer connected to a working power outlet?

● Is the computer turned on and the power light illuminated?

● Are all cables connected properly and seated?

● Are all of the necessary device drivers installed?

● Is the CONFIG.SYS file correct?

● Is the AUTOEXEC.BAT file (MS-DOS) or DOSSTART.BAT file correct?

● Was a non-bootable diskette loaded in the diskette drive at power-up?

● Are all CMOS settings correct?

Click on a selection below to identify some quick checks for common problems.

Power Monitor CD Drive USB

Diskette Drive Hard Drive DVD Drive

Resolving Hardware

conflicts

Solving Minor Problems

Problem Possible Solution

Computer will not turn on Ensure that the computer is connected to a working

power source.
Computer date and time display is
incorrect

The real-time clock (RTC) battery may need to be

replaced. See

Removal and Replacement

Procedures.

Computer powered off automatically 1. The unit may be in Sleep. If the amber light on

the front bezel is on, then the unit is in Sleep.

2. The unit temperature may have been exceeded.

Check the fan for function and blockage.

Top

Back to Troubleshooting

Solving Diskette Drive Problems

Problem Possible Solution

Diskette drive light stays on 1. Diskette may be damaged. In Windows 95 or 98,

run ScanDisk. Click Start =>

Programs=>Accessories=> System

Tools=>Scandisk to check for problems.

2. Diskette is incorrectly inserted. Remove the

diskette and reinsert.

3. Software program may be damaged. Check the

program diskettes.

4. Drive cable is not properly connected. Reconnect

the drive cable.
Diskette drive cannot write to a
diskette

1. Diskette is not formatted. Format the diskette.

2. Diskette is write-protected. Use another diskette

that is not write-protected, or disable the write

protection on the diskette.

3. Writing to the wrong drive. Check the drive letter

in your path statement.

4. Not enough space is left on the diskette. Use

another diskette.
Diskette drive cannot read a diskette 1. Diskette is not formatted. Format the diskette.

2. Using the wrong diskette type for the drive type.

Use a diskette that is compatible with the drive.

3. Reading the wrong drive. Check the drive letter in

your path statement.

4. Diskette drive has been disabled by Setup. Run

Setup and enable the diskette drive.

Top

Back to Troubleshooting

Solving Monitor Problems

Problem Possible Solution

Dim characters 1. The brightness and contrast controls are not set

properly. Adjust the brightness and contrast

controls.

2. Cables are not properly connected. Check that the

video cable is securely connected to the video card

and the monitor.

3. The RGB switch on the back of the monitor is

incorrectly set. Set the RGB switch (and sync

options, if this option is available) to 75 ohms, with

the sync set to "external." Refer to the

documentation included with the monitor.
Blank screen 1. Monitor is not turned on and the monitor light is

not on. Turn on the monitor and check that the

monitor light is on.

2. An energy saver feature has been enabled. Press

any key or click the mouse button, and if it is set,

type your password.

3. The brightness needs adjusting. Adjust the

brightness control.

4. System is in Sleep mode. Press the Sleep button

to wake up.

5. The cable connections are not correct. Check the

cable connection from the monitor to the computer

and to the electrical outlet.
Garbled characters on the screen
are mixed with text

Check the monitor connection. Ensure that the

monitor is capable of supporting the resolution that

the computer is using. If using the DOS

environment, you may need the ANSI.SYS driver.

Add the ANSI.SYS driver to the CONFIG.SYS file by

inserting the following line:

DEVICE = C:\ANSI.SYS
Monitor overheats There is not enough ventilation space for proper

airflow. Leave at least 3 inches (7.6 cm) of

ventilation space. Also, be sure there is nothing on

top of the monitor to obstruct airflow.
Cursor will not move using the
arrow keys on the keypad

The Num Lock key is on. Press the Num Lock key.

The Num Lock light should not be on when you want

to use the arrow keys.
Video colors are wrong The cable or monitor impedance is incorrect.

1. If you are using BNC cables, be sure that the Red,

Green and Blue BNC cables are connected to the

corresponding monitor connectors.

2. Be sure RGB inputs on the monitor are set to 75

ohms.
Blurry display or requested resolution
cannot be set

If the graphics controller was upgraded, the correct

display drivers may not be loaded. Install the display

drivers on the diskette included in the upgrade kit.
The picture is broken up, or it rolls,
jitters, or blinks

The monitor connections may be incomplete or the

monitor may be incorrectly adjusted.

1. Be sure the monitor cable is securely connected

to the computer.

2. If another monitor is in close proximity, move

them apart to be sure the electromagnetic field in

each monitor is not interfering with the other.

Top

Back to Troubleshooting

Solving Hard Drive Problems

Problem Possible Solution

Hard drive error occurs Hard disk has bad sectors or has failed. Replace

hard drive.
Disk transaction problem The directory structure is bad or there is a problem

with a file.

From the Windows desktop, click on the Start

button. Choose Programs=>Accessories => System

Tools=>Scandisk to check for problems.

If problems exist, run Scandisk and click on the

"Automatically fix errors" checkbox at the bottom to

correct the problems.

If a large number of lost allocation units is found,

click on the Start button. Choose Programs=>

Accessories=>System Tools=>Disk Defragmenter.
Drive not found Cable could be loose. Check cable connections.
Nonsystem disk message 1. The system is trying to start from a diskette that

is not bootable. Remove the diskette from the

diskette drive.

2. The system is trying to start from the hard drive

but the hard disk has been damaged. Insert a

bootable diskette into the diskette drive and restart

the computer with Ctrl+Alt+Del.

3. Diskette boot has been disabled in Setup. Run

Setup and enable diskette boot.
Hard drive operation seems slow The hard disk files may be fragmented.

From the Windows desktop, click on the Start

button. Choose Programs =>Accessories => System

Tools =>Scandisk to check for problems.

If problems exist, run Scandisk and checkmark the

"Automatically fix errors" box at the bottom to

correct the problems.

If a large number of lost allocation units is found,

click on the Start button. Choose Programs =>

Accessories=>System Tools=> Disk Defragmenter.
Hard drive activity light is not on,
or stays on without blinking

The hard disk files may be fragmented.

From the Windows desktop, click on the Start

button. Choose Programs=> Accessories => System

Tools=>Scandisk to check for problems.

If problems exist, run Scandisk and checkmark the

"Automatically fix errors" box at the bottom to

correct the problems.

If a large number of lost allocation units is found,

click on the Start button. Choose Programs=>

Accessories => System Tools=>Disk Defragmenter.

Top

Back to Troubleshooting

Solving CD Drive Problems

Problem Possible Solution

Cannot read compact disc 1. CD is not properly seated in the drive. Eject the

CD, press down on the CD firmly to correctly seat it

in the drive, then reload.

2. CD has been loaded upside down. Eject the CD,

turn it over, then reload.

3. CD may be dirty or scratched. Load another CD.

Cannot eject CD CD is not properly seated in the drive. Turn off the

computer, insert a thin metal rod, such as a paper

clip, into the emergency eject hole, then push

firmly. Slowly pull the tray out from the drive until

the tray is fully extended, then remove the CD.
CD drive devices are not detected or
driver is not loaded

1. CD drive is not connected properly or not properly

terminated. Open the computer and check to see

that the drive cable is connected properly.

2. Ensure that the correct driver is installed in

CONFIG.SYS.

3. If drive has been changed, make sure the jumper

setting is set for cable select.
CD does not work in the DOS mode Proper drivers are not loaded. Restart the system

and make sure the CD drive drivers are loaded.

Top

Back to Troubleshooting

Solving DVD Drive Problems

Problem Possible Solution

Cannot read DVD disk 1. DVD or CD is not properly seated in the drive.

Eject the DVD or CD, press down on the DVD or CD

firmly to correctly seat it in the drive, then reload.

2. DVD or CD disk may be dirty or scratched. Load

another DVD disk.
DVD movie does not work in the DOS
mode.

DVD will only operate as a CD drive. Make sure that

proper drivers are loaded. Restart the system and

make sure the Optical drive driver is loaded to

enable the DVD drive to operate as a CD drive.
Cannot eject DVD disk 1. The DVD, diskette, or hard drive was active when

attempting to eject the DVD. Wait until all drive

activity ends (the CD/hard drive light and diskette

drive light will go out), then try to eject the DVD.

Close the application that is using the CD/DVD, then

press eject.

2. The system is in the Sleep mode. Press the Power

button to bring the system back to full power, then

eject the DVD. NOTE: The system will not go into

Sleep mode while playing a DVD movie.

3. DVD disk is not properly seated in the drive. Turn

off the computer, insert a thin metal rod, such as a

paper clip, into the emergency eject hole, then push

firmly. Slowly pull the tray out from the drive until

the tray is fully extended, then remove the DVD

disk.
DVD drive devices are not detected;
driver is not loaded

1. DVD drive is not connected properly. Open the

computer and check to see that the drive cable is

connected properly.

2. Ensure that the correct driver is installed in

CONFIG.SYS.

3. If drive has been changed, make sure the jumper

setting is set for cable select.
Proper drivers are not loaded. Restart the system and make sure the DVD drive

drivers are loaded.
DVD drive slow to start autorun CDs. A DVD drive needs to identify the media descriptor

file from the CD/DVD and may take some time.
DVD will not start to play like a CD DVDs are not autoplay like a CD. Go to the Desktop

and click on the DVD player icon.
DVD movie does not fill the screen Generally, DVD media are dual-sided. One side

contains the full screen format, and the other has

the wide screen format. Eject the DVD movie and

place the appropriate format facing up.

Top

Back to Troubleshooting

Solving for USB Problems

Problem Possible Solution

USB device does not work with the
system.

The USB device and the system should interoperate.

Ensure that the correct driver is installed. Check

product documentation or the vendor's Web site for

updated drivers.

Top

Back to Troubleshooting

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Illustrated Parts

System Unit

Click on a part to find the spare part number.

Illustrated Parts

System Unit

Mass Storage
Cables
Boards
Fax/Modems
Keyboards/Mouse
Monitors
Return Kits
Documentation

System Unit

Description

Spare Part

Number

1

Front bezel assembly 159768-001

2

Cover assembly 148941-001

3

Model logo plate 166183-001

4

Door drive bay assembly

Spared with

front bezel

assembly

5

Button board assembly 141011-001

6

DCIC cover 102370-001

7

Drive bay bezel blank 5.25-in

Spared with

front bezel

assembly

8

Floppy bezel 102369-001

9

Back I/O panel cover TBD

10

Front I/O (DCIC) with cables

174775-001

11

Cage assembly 122929-001

12

Power supply

128017-001

13

Drive bay bezel blank 3.5-in

Spared with

front bezel

assembly

14

Hard drive/Diskette drive/Zip
drive cage

Not spared
separately

15

Option card retainer cover (not

shown)

174776-001

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Illustrated Parts

Mass Storage Devices

Illustrated Parts

System Unit

Mass Storage

Cables
Boards
Fax/Modems
Keyboards/Mouse
Monitors
Return Kits
Documentation

3.5-in 1.44 MB Diskette Drive
136436-001

Zip Drive

135568-001

3.5-in Hard Drive

privacy statement
legal notices

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Illustrated Parts

Cables

Illustrated Parts

System Unit
Mass Storage

Cables

Boards
Fax/Modems
Keyboards/Mouse
Monitors
Return Kits
Documentation

Power Cord

Fax/Modem Cable

Modem/Line Filter 334815-111

Diskette Data Cable

327770-001

Audio CD-ROM Cable 149806-001

Cables (not shown) Spare Part Number

Modem Adapter Cable 340398-xxx. Click on the box to find the

Cables

dash number for the modem adapter
cable for a specific location.

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Illustrated Parts

Boards for 7800 Models and 5900T

An example of the type of board used is illustrated. Board may vary slightly from the one
shown.

Illustrated Parts

System Unit
Mass Storage
Cables

Boards

Fax/Modems
Keyboards
Monitors
Return Kits
Documentation

Description

Boards

Spare Part

Number

Processor, PIII 500/100

1

PIII 600/133
PIII 667/133

133, 64MB SDIMM

2

133, 128MB SDIMM

153840-001
170394-001
170395-001

170080-001
170081-001

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Illustrated Parts

Fax/Modems

Your modem may vary slightly from those shown.

Illustrated Parts

System Unit
Mass Storage
Cables
Boards

Fax/Modems

Keyboards/Mouse
Monitors
Return Kits
Documentation

International Modem 56k V.90 - 166358-002 (S)

privacy and legal statement

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Illustrated Parts

Keyboards/Mouse

Illustrated Parts

System Unit
Mass Storage
Cables
Boards
Fax/Modems

Keyboards/Mouse

Monitors
Return Kits
Documentation

Keyboards/Mouse

Description Spare Part

Numbers

Internet
Keyboard

387084-xxx. Click on the
box below to determine
the dash number for the
keyboard for a particular
location.

Logitech scroll
mouse

334689-002

privacy and legal statement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Illustrated Parts

Monitors

Illustrated Parts

System Unit
Mass Storage
Cables
Boards
Fax/Modems
Keyboards/Mouse

Monitors

Return Kits
Documentation

Compaq MV520 15-inch monitor
105782-001

Compaq MV720 17-inch monitor
105784-001

Compaq MV920 19-inch monitor
105786-001

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Illustrated Parts

Return Kit

Illustrated Parts

System Unit
Mass Storage
Cables
Boards
Fax/Modems
Keyboards/Mouse
Monitors

Return Kit

Documentation

Return Kits

Description Spare Part

Number

Return Kit for 7800 series computers - North
America

128389-001

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Illustrated Parts

Documentation

Illustrated Parts

System Unit
Mass Storage
Cables
Boards
Fax/Modems
Keyboards/Mouse
Monitors
Return Kits

Documentation

Documentation and Software

Description

Spare Part

Number

Service Quick Reference
Guide (Qty 1)

162212-001

Service Quick Reference
Guide
(5 pack)

106854-001

Service Quick Reference,
Guide Quarterly Subscription
(Qty 1)

184960-001

Service Quick Reference
Guide, Quarterly
Subscription (5 pack)

184961-001

Quick Restore, Presario
7800-Australia

xxxxxx-01x

Quick Restore, Presario 7800­Asia Pacific

xxxxxx-37x

Quick Restore, Presario
7800- Taiwan

xxxxxx-ABx

Quick Restore, Presario
7800-New Zealand

xxxxxx-APx

Top

privacy and legal statement

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Preparing for Disassembly

To prepare the computer for the removal and replacement procedures, complete the following
steps:

1. Remove any diskette, compact disc (CD), or Digital Versatile Disk (DVD) from the

computer.

2. Turn off the computer and any peripheral devices that are connected to the computer.

CAUTION: Hold the power button for approximately four seconds or use the
shutdown command in Windows to turn off the system before you disconnect
any cables.

3. Disconnect the power cord from the electrical outlet, then from the computer.

4. Disconnect all peripheral device cables from the computer.

IMPORTANT:

During disassembly, label each cable as you remove it. Be sure to note
the position and routing of each cable before removal.

Back to Removal and Replacement

privacy and legal statement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Serial Number

Model may vary slightly from the one shown.

The computer serial
number should be
provided to Compaq
whenever requesting
information or ordering
spare parts. The serial
number is located on the
back 1 and on the front of
the computer, behind the
drive cover (not shown).

Back to Removal and Replacement

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Removal and Replacement

Removal Sequence

Chassis

Mass Storage Devices
Button Board
Digital Creativity

Imaging Center
Option Card Retainer
Graphics Board
PCI Cards
Memory
Processor
RTC Battery
System Board Cables
System Board
Back I/O Panel
Power Supply

Removing the
Chassis

1.

Complete the

preparation for
disassembly procedures.

2.

Remove five screws
from the back of the
computer.

3.

Grasp the handle on
back of the computer
chassis, and pull back to
separate from cover.

Replacement

To replace the chassis,
reverse the removal
procedure.

Back to Removal and Replacement

privacy and legal statement

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Removal and Replacement

Removal Sequence

Chassis

Mass Storage Devices

Button Board
Digital Creativity Imaging Center
Option Card Retainer
Graphics Board
PCI Cards
Memory
Processor
RTC Battery
System Board Cables
System Board
Back I/O Panel
Power Supply

Mass Storage
Devices Index

1

Optical Drives*

2

Zip Drive

3

Diskette Drive

4

Hard Drive

* Optical Drives refer to the CD,
CD-ROM, CD-RW, and DVD.

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Removal and Replacement

Mass Storage Devices

Optical Drive

Zip Drive
Diskette Drive
Hard Drive
Mass Storage Devices

Index

Removing
the
Optical
Drive

1.

Complete

preparation
for
disassembly
procedures.

2.

Remove the
chassis.

3.

Disconnect
audio, data,
and power
cables.

Next Step

privacy and legal statement

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Removal and Replacement

Mass Storage Devices

Optical Drive

Zip Drive

Diskette Drive
Hard Drive
Mass Storage Devices

Index

Removing
the Zip
Drive

1.

Complete
the

preparation
for
disassembly
procedures.

2.

Remove the
chassis.

3.

Disconnect
the data
and power
cables.

Next Step

privacy and legal statement

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Removal and Replacement

Mass Storage Devices

Optical Drive

Zip Drive

Diskette Drive
Hard Drive
Mass Storage Devices

Index

Removing
the Zip
Drive,
continued

4.

Remove the
two screws
from the
right side
and the two
screws from
the left side
of the Zip
Drive.

5.

Grasp the
Zip Drive
and remove
from the
drive bay.

Replacement

To replace
Zip Drive,
reverse the
removal
procedure.

Return to
Removal
and
Replacement

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Removal and Replacement

Mass Storage Devices

Optical Drive

Zip Drive
Diskette Drive
Hard Drive

Mass Storage Devices Index

Removing
the Optical
Drive,
continued

4.

Remove two
screws from
the right
side and two
screws from
the left side
of the
Optical
Drive.

5.

Remove the
Optical Drive
from the
drive bay.

Replacement

To replace
the Optical
Drive,
reverse the
removal
procedure.

Return to
Removal
and
Replacement

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Removal and Replacement

Mass Storage Devices

Optical Drive
Zip Drive

Diskette Drive

Hard Drive
Mass Storage Devices

Index

Removing
the
Diskette
Drive

1.

Complete

preparation
for
disassembly
procedures.

2.

Remove
chassis.

3.

Disconnect
the power
and data
cables.

Next Step

privacy and legal statement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Removal and Replacement

Mass Storage Devices

Optical Drive
Zip Drive

Diskette Drive

Hard Drive
Mass Storage Devices

Index

Removing
the
Diskette
Drive,
continued

4.

Remove the
two screws
from the
right side
and the two
screws
from the
left side of
the diskette
drive bay.

5.

Pull the
diskette
drive out of
the drive
bay.

Replacement

To replace
the diskette
drive,
reverse the
removal
procedure.

Return to
Removal and
Replacement

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Removal and Replacement

Hard Drives

5.25-Inch drive

3.5-Inch drive

The Compaq Presario 7800 Series Computers may be equipped with 5.25-Inch or 3.5-Inch form factor hard
drives. Refer to the disassembly instructions for the model you are servicing.

privacy and legal statement

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Removal and Replacement

Mass
Storage
Devices

Optical
Drive

Zip Drive
Diskette

Drive

Hard Drive

Mass
Storage
Devices
Index

Removing
the 5.25­Inch Hard
Drive

1.

Complete the

preparation
for
disassembly
procedures.

2.

Remove the
chassis.

3.

Disconnect the
data and
power cables.

Next Step

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Removal and Replacement

Mass

Storage
Devices

Optical
Drive

Zip
Drive

Diskette
Drive

Hard
Drive

Mass
Storage
Devices
Index

Removing the

5.25-Inch
Hard Drive,
continued

4.

Remove the two
screws from the
chassis and the
two screws from
the Hard Drive
supports.

5.

Slide the Hard
Drive forward
and lift up from
the chassis.

Replacement

To replace the
Hard Drive,
reverse the
removal
procedure.

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Removal and Replacement

Mass Storage Devices

Optical Drive
Zip Drive
Diskette Drive

Hard Drive

Mass Storage Devices
Index

Removing the 3.5­Inch Hard Drive

1.

Complete the

preparation for
disassembly
procedures.

2.

Remove the chassis.

3.

Disconnect the data and
power cables.

Next Step

privacy and legal statement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Removal and Replacement

Mass
Storage
Devices

Optical
Drive

Zip
Drive

Diskette
Drive

Hard
Drive

Mass
Storage
Devices
Index

Removing
the 3.5-Inch
Hard Drive,
continued

4.

Remove the
two screws
from the right
side and the
two screws
from the left
side of the Hard
Drive supports.

5.

Slide Hard
Drive inward to
remove from
chassis.

Replacement

To replace the
Hard Drive,
reverse the
removal
procedure.

Return to
Removal and
Replacement

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Removal and Replacement

Removal

Sequence

Chassis
Mass Storage Devices

Button Board

Digital Creativity
Imaging Center

Option Card Retainer
Graphics Board
PCI Cards
Memory
Processor
RTC Battery
System Board Cables
System Board
Back I/O Panel
Power Supply

System board may vary depending on model.

Removing
the Button
Board

1.

Complete
the

preparation
for
disassembly
procedures.

2.

Remove the
chassis.

3.

Disconnect
button
board
power/data
cable from
the system
board
(J10).

Next Step

privacy and legal statement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Removal and Replacement

Removal

Sequence

Chassis
Mass Storage Devices

Button Board

Digital Creativity
Imaging Center

Option Card Retainer
Graphics Board
PCI Cards
Memory
Processor
RTC Battery
System Board Cables
System Board
Parallel Port
Back I/O Panel
Power Supply

Removing
the Button
Board,
continued

4.

Remove the
two screws
from button
board
assembly
and remove
assembly
from back of
the front
bezel.

Replacement

To replace
the button
board,
reverse the
removal
procedure.

NOTE:
Reconnect
the
power/data
cable with
the red wire
connected to
pin 1. Last
two pins on
left should
be exposed.
(See
previous
page for
graphic).

Return to
Removal
and
Replacement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Removal and Replacement

Removal

Sequence

Chassis
Mass Storage Devices
Button Board

Digital Creativity
Imaging Center

Option Card Retainer
Graphics Board
PCI Cards
Memory
Processor
RTC Battery
System Board Cables
System Board
Back I/O Panel
Power Supply

System board may vary depending on model.

Removing
the Digital
Creativity
Imaging
Center
(DCIC)

1.

Complete
the

preparation
for
disassembly
procedures.

2.

Remove the
chassis.

3.

Disconnect
the IEEE
1394 wire
cable (JP3)
and USB
ribbon cable
(JP4) from
the system
board.

Next Step

Replacement

To replace
the DCIC
cables,
reverse the
replacement
procedure.

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Removal and Replacement

Removal

Sequence

Chassis
Mass Storage Devices
Button Board
Digital Creativity

Imaging Center

Option Card Retainer

Graphics Board
PCI Cards
Memory
Processor
RTC Battery
System Board Cables
System Board
Back I/O Panel
Power Supply

Removing
the
Option
Card
Retainer

1.

Complete
the

preparation
for
disassembly
procedures.

2.

Remove the
chassis.

3.

Remove the
two screws
from the
Option Card
Retainer
and remove
retainer
from
chassis.

Replacement

To replace
the Option
Card
Retainer,
reverse the
removal
procedure.

Back to Removal and Replacement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Removal and Replacement

Removal

Sequence

Chassis
Mass Storage Devices
Button Board
Digital Creativity

Imaging Center
Option Card Retainer

Graphics Board

PCI Cards
Memory
Processor
RTC Battery
System Board Cables
System Board
Back I/O Panel
Power Supply

Removing
the
Graphics
Board

1.

Complete
the

preparation
for
disassembly
procedures.

2.

Remove the
chassis.

3.

Remove the
Option Card
Retainer.

4.

Pull the
graphics
board and
bracket out
and to the
left to
remove
from the
chassis.

Replacement

To replace
graphics
board,
reverse the
removal
procedure.

Back to Removal and Replacement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Removal and Replacement

Removal

Sequence

Chassis
Mass Storage Devices
Button Board

Digital Creativity
Imaging Center

Option Card Retainer

Jumpers & Switches Specifications

Removing
a PCI Card

1.

Complete
the

preparation
for
disassembly
procedures.

2.

Remove the
chassis.

Graphics Board

PCI Cards

Memory
Processor
RTC Battery
System Board Cables
System Board
Back I/O Panel
Power Supply

Illustration shows Fax/Modem card.

All PCI Cards (Fax/Modem, Audio, NIC, and

NOTE:

Location of PCI Cards are as follows:

● Audio card in PCI slot 2

● HPN card in PCI slot 3

● NIC card in PCI slot 4

● Fax/Modem card in PCI slot 5

Home PNA) have the same removal
procedures.

3.

Remove the
Option Card
Retainer.

4.

Pull the PCI
Card out
and to the
left to
remove
from the
chassis.

Replacement

To replace the
PCI Card,
reverse the
replacement
procedure.

Back to Removal and Replacement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Removal and Replacement

Removal

Sequence

Chassis
Mass Storage Devices
Button Board
Digital Creativity

Imaging Center
Option Card Retainer
Graphics Board
PCI Cards

Memory

Processor
RTC Battery
System Board Cables
System Board
Back I/O Panel
Power Supply

Removing
the
Memory
Module

1.

Complete
the

preparation
for
disassembly
procedure.

2.

Remove the
chassis.

3.

Press
outward on
the release
latches
found on
both ends
of the Dual
Inline
Memory
Module
(DIMM).

4.

Detach
memory
module
from slot.

Replacement

To replace
memory
module,
reverse the
removal
procedure.

Back to Removal and Replacement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Removal and Replacement

Processor for 7800 Models and 5900T

Removal

Sequence

Chassis
Mass Storage Devices
Button Board
Digital Creativity

Imaging Center
Option Card Retainer
Graphics Board
PCI Cards
Memory

Processor

RTC Battery
System Board Cables
System Board
Back I/O Panel
Power Supply

Processor may vary from the one shown.

Removing
the
Processor

1.

Complete
the

preparation
for
disassembly
procedures.

2.

Remove the
chassis.

CAUTION:
The
processor
may still be
very hot if
the
computer
has not
been
running
recently.

3.

Disconnect
heat sink
fan from
the system
board.

4.

Unlatch the
heat sink
clip from
the socket.

5.

Remove the
heat sink.
(NOTE: If
the heat
sink is
bonded
with
processor,
twist to
remove the
heat sink.)

6.

Lift up the
ZIF socket
handle (1),
remove the
processor
from the
socket (2).

Replacement

To reinstall
the
processor,
rub a
thermal
transfer
crayon on
the bottom
of the heat
sink, then
reverse the
steps
above.

NOTE: The
thermal
transfer
crayon
replaces the
thermal
pad.

Back to Removal and Replacement

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Removal and Replacement

Removal

Sequence

Chassis
Mass Storage Devices
Button Board
Digital Creativity

Imaging Center
Option Card Retainer
Graphics Board
PCI Cards
Memory
Processor

RTC Battery

System Board Cables
System Board
Back I/O Panel
Power Supply

Removing the RTC
Battery

1.

Perform the

preparation

for disassembly procedure.

2.

Remove the chassis.

3.

Push out the socket lever

1 and slide the RTC

battery out of the socket

2.

Replacement

To replace the RTC
battery, reverse the
removal procedure.

WARNING: The
clock/CMOS lithium
battery may explode if
mistreated.
Do not abuse. Use only
replacement batteries
supplied by Compaq
Computer Corporation.

Back to Removal and Replacement

privacy and legal statement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Removal and Replacement

Processor for 7800 Models

Removal

Sequence

Chassis
Mass Storage Devices
Button Board
Digital Creativity

Imaging Center
Option Card Retainer
Graphics Board
PCI Cards
Memory
Processor
RTC Battery

System Board
Cables

System Board
Back I/O Panel
Power Supply

Removing
the
System
Board
Cables

1.

Parallel
port cable
connector,
J21 system
board
connector

2.

Active
heatsink
cable, J15
system
board
connector

3.

Power
supply
cable, J9
system
board
connector

4.

1394 cable,
JP3 system
board
connector.

5.

USB cable,
JP4 system
board
connector.

6.

Not used,
J11 system
board
connector.

7.

Diskette
drive data
cable, J14
system
board
connectors.

8.

CD/DVD
data cable,
J13 system
board
connector.

9.

Hard drive
data cable,
J12 system
board
connector.

10. Button
board data
cable, J10
system
board
connector.

Replacement

To replace
the System
Board
Cables,
reverse the
removal
procedure.

Back to Removal and Replacement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Removal and Replacement

Removal

Sequence

Chassis
Mass Storage

Devices
Button Board
Digital

Creativity
Imaging
Center

Option Card
Retainer

Graphics Board
PCI Cards
Memory
Processor
RTC Battery
System Board

Cables

System Board

Back I/O Panel
Power Supply

System board may vary from the one shown.

Removing the System
Board

1.

Complete the

preparation
for
disassembly procedures.

2.

Remove the chassis.

3.

Remove the Graphics
Board.

4.

Remove the Fax/Modem.

5.

Remove Networking
Interface Card (on select

models only).

6.

Remove the Audio Card.

7.

Remove the Memory.

8.

Remove the Processor.

9.

Disconnect the System
Board Cables.

NOTE:

Be sure to remove
components
such as DIMMs and
processor before replacing
the system board.

10.

Remove the nine screws
from the system board.

11.

Slide system board toward
drive bay and lift from the
computer.

Replacement

To replace the system
board,
reverse the removal
procedure.

Back to Removal and Replacement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Removal and Replacement

Back I/O Panel may vary depending on model.

United States December 31, 2002

Removal

Sequence

Chassis
Mass Storage Devices
Button Board
Digital Creativity

Imaging Center
Option Card Retainer
Graphics Board
PCI Cards
Memory
Processor
RTC Battery
System Board Cables
System Board

Back I/O Panel

Power Supply

Removing the Back
I/O Panel

1.

Complete the

preparation for
disassembly
procedures.

2.

Remove the chassis.

3.

Remove the Graphics
Board.

4.

Remove the
Fax/Modem.

5.

Remove the
Networking Interface
Card (on select models

only).

6.

Remove the Audio
Card.

7.

Remove the Memory.

8.

Remove the Processor.

9.

Disconnect System
Board Cables.

10.

Remove the System
Board.

11.

Push the back I/O
Panel into the chassis
from the back of the
chassis and remove.

Back to Removal and Replacement

Replacement

To replace the Back
I/O Panel, reverse the
removal procedure.

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Removal and Replacement

Removal

Sequence

Chassis
Mass Storage Devices
Button Board
Digital Creativity

Imaging Center
Option Card Retainer
Graphics Board
PCI Cards
Memory
Processor
RTC Battery
System Board Cables
System Board
Back I/O Panel

Power Supply

Removing
the Power
Supply

1.

Complete
the

preparation
for
disassembly
procedures.

2.

Remove the
chassis.

3.

Remove

5.25-Inch
or 3.5-Inch
Hard Drive.

4.

Disconnect
System
Board
Cables.

5.

Disconnect
power
supply
cables from
CD/DVD,
Zip drive,
Diskette
and Hard
Drive.

6.

Remove
Graphics
Board.

7.

Remove the
Fax/Modem.

8.

Remove
Networking
Interface
Card (on

select
models
only).

9.

Remove the
Audio Card.

10.

Remove the
Memory.

11.

Remove the
Processor.

12.

Remove the
System
Board.

13.

Remove the
four screws
from the
back of the
unit and
one screw
from the
tab.

14.

Slide the
power
supply
toward front
of unit and
down to
remove
from
chassis.

Replacement

To replace
the power
supply,
reverse the
removal
procedure.

Back to Removal and Replacement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Presario 7800 and 5900T Models with Pentium III
System Board

Jumper & Switch Information

Number Function Description

Reference

Designator

1

Secondary IDE
Drive

40-pin J13

2

Diskette Drive 34-pin J14

3

Primary IDE Drive 40-pin J12

4

Not used

5

Secondary fan
connector

J20

6

Button Board 20-pin J10

7

CMOS 3-pin JP1

8

Battery Socket

Battery
holder

BT1

9-13

PCI Slots

32-bit PCI
connector

PCI 1 to 5

14

AGP Slot Connector AGP1

15

Slot 1 321-pin PGA J18

16

Front side bus

four, 2-pin
jumpers

JP5-7*

17

Heat sink fan
connector

3-pin J15

18-20

DIMM Sockets

168-pin
DIMM

DIMM 1 to 3

21

IEEE 1394 10-pin JP3

22

Front I/O panel 10-pin JP4

23

Single front I/O
panel

30-pin J11**

24

Mouse

Miniature 6­pin

J1

25

Keyboard

Miniature 6­pin

J1

26

Back USB Dual 4-pin J2

27

Serial Port DSUB 9-pin J4

28

Parallel Port

DSUB 25­pin

J21

29

IEEE 1394
Connector

6-pin J7

Fan 3-pin
Power Supply 20-pin J9
Clock Multiplier 3, 2-pin JP2

* JP7 always set to the ON position. JP5, JP6, and JP8 always set to the OFF position.

** Single front I/O panel and USB and IEEE1394 connectors are not used concurrently.

Jumper Settings

● Clearing CMOS

● Frequency Selection (JP2)

Clearing CMOS JP1

CMOS
Normal

CMOS Clear

pins 1-2 pins 2-3

Top

Frequency Selection (JP2)

Multiplier

Pin (1-2)Pin (3-4)Pin (5-6)Pin (7-8)FSB 66

MHz

FSB
100

MHz

FSB
133
MHz

2 ON ON ON ON 133 200 266
3 ON OFF ON ON 200 300 400
4 OFF ON ON ON 266 400 533

5 OFF OFF ON ON 333 500 667
5/2 ON ON OFF ON 166 250 333
7/2 ON OFF OFF ON 233 350 466
9/2 OFF ON OFF ON 300 450 600

11/2 OFF OFF OFF ON 366 550 733

6 ON ON ON OFF 400 600 800

7 ON OFF ON OFF 466 700 933

8 OFF ON ON OFF 533 800 1066

Reserved OFF OFF OFF OFF *** *** ***

13/2 ON ON OFF OFF 433 650 866
15/2 ON OFF OFF OFF 500 750 1000

3/2 OFF ON OFF OFF 100 150 200

2 OFF OFF OFF OFF 133 200 266

Top

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

3.5-Inch Hard Drive

Back to Jumpers

5.25-Inch Hard Drive

Back to Jumpers

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Digital Versatile Disk Drive

Settings may vary depending on vendor.

Back to Jumpers

CD Drive

Settings may vary depending on vendor.

Back to Jumpers

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Specifications

Compaq Presario 7800 Series Personal Computer specifications are listed in the following tables.
Select the specification you are interested in from the navigation bar.

Specifications

System
Specifications

Video Memory
System Interrupts
System I/O
System Memory
System DMA
Power Supply
Diskette Drive
DVD Drive
IDE Hard Drives
Mouse
Fax/Modem
CD-RW Drive

System Memory

Low Address High Address System Function

00000000 0009FFFF Base Memory
000A0000 000CFFFF NVIDIA GeForce 256
000E0000 000FFFFF Base Memory
00100000 080FFFFF Base Memory
08100000 0810FFFF Conexant PCI Modem Enumerator
08110000 081100FF Accton EN1207D Series PCI Fast Ethernet

Adapter
09000000 09FFFFFF NVIDIA GeForce 256
09000000 0A0FFFFF VIA Tech 8598 CPU to AGP Controller
0A000000 0A00FFFF NVIDIA GeForce 256
10000000 17FFFFFF VIA Tech 8598 CPU to AGP Controller
10000000 17FFFFFF NVIDIA GeForce 256
08000000 0807FFFF Standard Direct Video Memory
08080000 080FFFFF Optional Direct Video Memory
08100000 7FFFFFFF unused
80000000 80FFFFFF Memory mapped I/O devices
81000000 FDFDFFFF unused/System ROM aliases
FDFE0000 FDFFFFFF System ROM (alias)
FE000000 FFFDFFFF unused
FFFE0000 FFFFFFFF System BIOS ROM

Top

System DMA

Default DMA Function

DMA0 ECP Printer Port (LPT1)
DMA1 Creative SB16 Emulation
DMA2 Standard Floppy Disk Controller
DMA3 Available
DMA4 Direct Memory Access Controller
DMA5 Creative SB16 Emulation
DMA6 Available
DMA7 Available

Top

Power Supply

U. S. Outside U. S.

Input Specifications

Voltage Switch Setting 115 V 230 V
Nominal Line Voltage 115 VAC 230 VAC
Range Input Line 90 to 132 VAC 180 to 264 VAC
Frequency Range 47 to 63 Hz 47 to 63 Hz
Power Factor 0.55 0.55
Input Power 310 Watts 310 Watts
Input Current 6 at 90 VAC 3 at 180 VAC
Inrush Current 65 A at 115 VAC

(cold start)

65 A at 230 VAC
(cold start)

Holdup Time 16 ms from zero

crossing at 120 VAC

16 ms from zero
crossing at 240 VAC

Steady State 200 Watts 200 Watts

General Specifications

Full Output Rating To 122°F and 5,000

ft
To 90°F and 10,000
ft (derate linearly)

To 50°C and
1524 m
To 32°C and
3048 m (derate
linearly)

Minimum Load 1.4 A on + 5.0 V

output; 0.07 A on
12 V output

1.4 A on + 5.0 V
output; 0.07 A on
12 V output

Ambient Temperature Range

Operating 50° to 122° F 10° to 50° C
Storage -40° to 151° F -40° to 66° C

Dielectric Voltage Withstand

Input to Ground 1500 VAC/1 second

Safety Standard

UL 1950; CSA 22.2 950; TUV/VDE EN 60
950 (VDE0805/11.91); EMKO-TSE (74­SEC) 207/94

Input Transient Susceptibility

Common and Differential Mode
(superimposed on AC line)

2500 V, 1 us, damped sinusoid
600 V, 10 us pulse

Differential Mode 20% step change in AC input voltage

Top

Diskette Drive

Diskettes

Size (in) 3.5 (8.89 cm)
High Density (MB) 1.44
Low Density (KB) 720

Light

Green

Height

One-third

Bytes per Sector

512

Sectors per Track

High Density 18
Low Density 9

Tracks per Side

High Density 80
Low Density 80

Read/Write Heads

2

Average Seek Time (ms)

Track-to-Track 3
Average 94
Settling Time 15
Latency Average 100

Top

CD/DVD Drive

Dimensions

U. S. Metric

Width
Height
Depth

5.74 in

1.68 in

8.23 in

14.60 cm

4.29 cm

20.80 cm

Weight

1.80 lb 0.9 kg

Applicable Disc Formats

DVD-5, DVD-9, DVD-10, DVD­18
CD-ROM
CD-DA
CD-XA
Photo CD
CD-I Ready
CD-Bridge
CD-R

Mode 1 and Mode 2
Audio
Mode 2, Form 1 and 2
Single and Multiple Session

Block Size

CD-ROM Mode 0
CD-ROM Mode 1
CD-ROM Mode 2
DVD

2352 bytes
2352, 2340,2336, 2048 bytes
2352,2340, 2336, 2048 bytes
2048 bytes

Center Hole

15 mm diameter

Diameter

12 cm, 8 cm

Thickness

1.2 mm

Track Pitch

0.74 µm (DVD) 1.6 µm (CD-ROM)

Laser

Beam Divergence
Output Power
Type
Wave Length

53.5 degrees ± 1.5 degrees
5 mW
Semiconductor laser GaAIAs
650 nm ± 25 nm (DVD)
795 nm ± 25 nm (CD)

Access Time (Typical)

Random
Full Stroke

DVD:

< 180 ms
< 300 ms

CD:

< 120 ms
< 200 ms

Audio Output Level

Line Out
Headphone

1.0 V (RMS) at 47 kW

0.7 V (RMS) at 32 W

Cache Buffer

512 KB

Sustained Data Transfer Rate 150 KB/sec (single, CD-ROM

mode)
2100-4800 KB/sec (32× CAV CD­ROM mode)
4455-10800 KB/sec (8× CAV DVD
mode)

Interface Cable Length (Max)

18 in

Startup Time

< 10 sec

Stop Time

< 3 sec

Top

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Specifications

Compaq Presario 7800 Series Personal Computer specifications are listed in the following tables. Select the
specification you are interested in from the navigation bar.

Specifications

System Specifications
Video Memory
System Interrupts
System I/O
System Memory
System DMA
Power Supply
Diskette Drive
DVD Drive
IDE Hard Drives
Mouse
Fax/Modem
CD-RW Drive

IDE Hard Drives

10 GB 10 GB 15 GB 20 GB 30 GB 40 GB

Compaq Spare Part
Number

168028­001

168029­001

170389-001 168031-001 168628-

001

173342-001

Formatted Capacity

Physical (MB)
Logical (MB)

10020
10020

10005 15020 20020

20020

30020
30020

40020
40020

Transfer Rate

Head (Mbits/sec)
Interface (Mbytes/sec)

148.8-

241.9
66

66 66

148.8-241.966113.9-

198.7
66

66

Typical Seek Time
(including settling)

Single Track (mS)
Average (mS)
Full Stroke (mS)

1.5

11.0

18.0

1.0
<0.9
<20

1
<0.9
<20

1.5

11.0

18.0

1.5

9.0

18.0

1.0
<9.0
<20.0

Disk Rotational Speed
(RPM)

5400 7200 5400 5400 5400 7200

Cylinders

Physical
Logical

16383
16383

19386
16383

19571
16383

15957
16383

33637
16383

19386
16383

Data Heads

Physical
Logical

3162161166

16

4168

16

Sectors per Track

Physical
Logical

307-51263325-56063312-57663307-51263309-53963325-560

63

Top

Mouse

U. S. Metric

Dimensions

Height
Length
Width

1.48 in

4.76 in

2.44 in

37.5 mm

120.8 mm

62.0 mm

Weight

6.1 oz 131 g

Base Resolution

400 DPI

Tracking Speed

(maximum)

10 in/sec 25 cm/sec

Temperature

Operating
Storage

32° F to 104° F

-4° F to 140° F

0° C to 40° C

-20° C to 60° C

Lifetime

Mechanical
Switch

Exceeds 300 miles
Exceeds 1 million
operations

Exceeds 483 km
Exceeds 1 million
operations

Relative Humidity

10% to 90%, noncondensing

ESD

No soft errors through 10 kV;
No hard errors through 15 kV;
specific performance depends on host system

Top

Fax/Modem

Conexant HCF
V.90 56K Data Fax
PCI Modem

Conexant HCF V.90
56K Data Fax PCI
Modem (includes an

International DAA)

Conexant DSL

Maximum Data
Speed (kbps)

56* 56* 56*

Data

V.90, K56Flex, V.34,
V.32terbo, V.32bis,
V.32, V.22bis, V.22,
V.21, Bell 212A, Bell
103

V.90, K56Flex, V.34,
V.32terbo, V.32bis,
V.32, V23, V.22bis,
V.22, V.21, Bell
212A, Bell 103

V.90, K56Flex,
V.34,
V.32terbo,V.32bis,
V.32, V.22bis,
V.22, V.23, V.21,
Bell 212A, Bell
103

Error
Correction

V.42bis,V.42, LAPM,
and MNP 2-5

V.42, LAPM, and
MNP 2-4

V.42 and MNP2-4

Fax

V.17 (14.4 kbps
transmission speed)
V.29, V.27ter, V.21
Channel 2, Class 1
command set,
Group III FAX

V.17 (14.4 kbps
transmission speed)
V.29, V.27ter, V.21
Channel 2, Group III
FAX, Class 1
interface

V.17 (14.4 kbps
transmission
speed) V.29,
V.27ter, V.21
Channel 2, Group
III, Class 1
interface

* Both K56flex and V.90 are designed only to allow faster downloads from either
K56flex or V.90 compliant digital sources. Maximum achievable download
transmission rates are currently unknown, may not reach 56kbps, and will vary
with line conditions.

Top

CD-RW Drive

Dimensions U. S. Metric

Width
Height
Depth

Weight
Applicable Read-Only Disc

CD-ROM Mode 1
CD-ROM XA Mode 2, Form 1 and Form 2
CD Digital Audio
CD Extra
CD-I

CD-I Ready

Mode 2, Form 1 and Form 2

Photo CD Single and Multi Session
Video CD

Block Size (Read-Only Disc
Parameters)

CD-R Mode 1 2048, 2352 bytes
CD-R Mode 2, Form 1 2048, 2328, 2336, 2340, and 2352

bytes
CD-R Mode 2, Form 2 2328, 2336, 2340, and 2352 bytes
CD-DA 2352 and 2368 bytes

Applicable Writeable Disc

CD-ROM Mode 1
CD-ROM XA Mode 2, Form 1 and Form 2
CD Digital Audio
CD-I Mode 2, Form 1 and Form 2
Video CD
CD-Text

Block Size (Writeable Disc
Parameters)

CD-RW Mode 1 2048 bytes
CD-RW Mode 2, Form 1 2048 and 2352 bytes
CD-RW Mode 2, Form 2 2352 bytes
CD-DA 2352 bytes

Center Hole

15 mm diameter

Diameter

12 cm, 8 cm

Thickness

1.2 mm

Track Pitch

1.6 µm

Laser

Access Time

Random
Full Stroke

150 ms (typical)

350 ms (typical)

Audio Output Level

Line Out
Headphone

1.0 V (RMS) at 47 kW

0.7 V (RMS) at 32 W

Cache Buffer

1 Mbyte (minimum)
Sustained Data Transfer Rate

● 300 KB/s (2X) CD-ROM, CD-

R, CD-RW Read, CD-R, CD­RW Write

● 600 KB/s (4X) CD-ROM, CD-

R, CD-RW Read, CD-R Write

● Variable 1500 to 3600 KB/s

(10X to 24X) CD-ROM, CD-R
Read

Interface Cable Length (Max)

18 in

Startup Time

< 7 sec (single, typical)

< 30 sec (multisession, typical)

Stop Time

< 4 sec

privacy and legal statement

United States December 31, 2002

Maintenance & Service Guide

Presario 7800 Series Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Specifications

Compaq Presario 7800 Series Personal Computer specifications are listed in the following tables.
Select the specification you are interested in from the navigation bar.

Specifications

System
Specifications

Video Memory
System Interrupts
System I/O
System Memory
System DMA
Power Supply
Diskette Drive
DVD Drive
IDE Hard Drives
Mouse
Fax/Modem
CD-RW Drive

System I/O

Low I/O
Address

High I/O

Address Function

0000 000F DMA Controller #1
0010 001F DMA Controller Aliases
0020

Interrupt Controller #1 Control Register

0021

Interrupt Controller #1 Mask Register

0022 003D Interrupt Controller Aliases
0040 0043 Counter/Timer
0044 004F
0050 0053 Counter/Timer Aliases
0053 005F
0060

Keyboard Controller Data Register

0061

Port B: SERR/IOCHK NMI, Speaker, Refresh

0062 0063
0064

Keyboard Controller Command/Status

Register

Top

0065 006F
0070

NMI Mask Register (Bit 7)

0070

RTC/Configuration Memory Index Port (Bit

6:0)

0071

RTC/Configuration Memory Data Port

0072

RTC Extended Index

0073

RTC Extended Data

0074 007F
0080 008F DMA Page Registers
0090 0091 Alias of DMA page registers if SOUTH

BRIDGE.4C.7=0

0092

Port 92 (fast reset and A20 gate)

0093 009F Alias of DMA page registers if SOUTH

BRIDGE.4C.7=0

00A0

Interrupt Controller #2 Control Register

00A1

Interrupt Controller #2 Mask Register

00A2 00B1
00B4 00BF
00C0 00DF DMA Controller #2
00E0

ESS Index Register

00E1

ESS Data Register

00E2 00E3 DDC2 Registers
00E4 00E5 Master I2C Interface
00E6

TV/MPEG Configuration Register

00E7 00E9
00EA

Ultra I/O Index Register

00EB

Ultra I/O Data Register

00EC 00EF Modem configuration
00F0 00F1 Coprocessor Busy Clear/Reset
00F2 00F8
00F9

Lock Configuration Register (Dummy Write)

00FA
00FB

Unlock Configuration Register (Dummy Write)

00FD 00FF
0100 0101
0102

Video: POS. 102 register

0103 012F
0132 016F
0170 0177 Secondary IDE Controller
0178 01EF
01F0 01F7 Primary IDE Controller
01F8 0200
0201
0202 021F
0220 022F
0230 025F
0260 0263
0264 0277
0278 027F Reserved-Parallel Port
0280 02E7
02E8 02EF Reserved-Serial Port (COM4)
02F0 02F7
02F8 02FF (COM2)
0330 0331
0332 036F
0370 0377 Reserved-Floppy Drive Controller 2
0378 037F Parallel Port
0380 0387
0388 038B
038C 03B3
03B4 03B5 Video: Monochrome
03B6 03B9
03BA

Video: Monochrome

03BB
03BC 03BF Reserved-Parallel Port
03C0 03CF Video: VGA Registers
03D0 03D3
03D4 03D5 Video: Color
03D6 03D9

03DA

Video: Color

03DB 03E7

03E8 03EF Reserved-Serial Port (COM3)
03F0 03F7 Floppy Disk Controller (Primary)
03F6 03F7 IDE Interface (Fixed Disk and CD-ROM)
03F8 03FF Serial Port (COM1)
0400 04EF
04D0

Interrupt Controller #1 Edge/Level Control

04D1

Interrupt Controller #2 Edge/Level Control

04D2 0677
0678 067A Parallel Port ECP Mode
0778 077A Parallel Port ECP Mode
0CF8

PCI Configuration Index (32-bit I/O only)
0CFC

PCI Configuration Data
46E8

Video: Adapter Sleep

Top

privacy and legal statement

United States January 2, 2003

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Product Description

Digital Creativity Imaging Center

Description

1

USB (Universal Serial Bus) connector

2

IEEE 1394 connector

Back to Product Description

privacy and legal statement

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Product Description

Power Management Features

Compaq Presario 7800 Series Personal Computers use ACPI (Advanced Configuration and Power
Interface) for system power management. ACPI is an open industry specification that provides
reliable power management through improved hardware and operating system coordination.

The following is a list of the power management features:

● Power Status Lights. You can quickly tell the sleep condition of the system by glancing at

the Power Status Lights on the unit or keyboard.

● Automatic Sleep. In Windows 98, there are different Power Schemes under which the

system goes into Sleep mode automatically when it times out. The optional settings for
Windows 98 are Home/Office Desk, Portable/Laptop, and Always On. The system
supports different levels of power management for varying patterns of computer usage.

● Default and Adjustable timeout settings. The default setting for Sleep timeout is 30

minutes. The Sleep timeout value can be set in the Control Panel by clicking the Power
Management icon. At the Properties screen, click System Standby, Turn off Monitor,
and Turn off Hard Disk to set the length of time before the system goes to sleep.

● Manual Sleep. To manually put your computer into sleep mode in the Windows 98 desktop,

press the Sleep button (on the keyboard). The power status light on the CPU will light to
show that Sleep mode is activated.

● Other manual standby options. Another way to put your computer into sleep mode

manually under Windows 98 is to select Start, then Shutdown. Select Standby from the list
of choices to put the system into Sleep mode. The system can then be turned off or left in
Sleep. When the Sleep button is pressed, the system returns to the previous Windows 98
Desktop state.

● Wake-up events. Events that bring a system back to the working state include:

■ Pressing the Sleep button on the keyboard

■ Pressing the CPU Power button

■ Answering a call from Fax/Modem

● Synchronized software and hardware volume control buttons.

Top

States of Power Management

Power management can be defined by three distinct power states in which the computer operates:
On, Off, and Sleep. The following table describes the power states and lists the power consumption
of each state:

Power Management States

Energy State Description Power Consumption

On Power is available to the system. The

AC cable is connected, and the power
status light is green.

90 Watts avg., 110 Watts max

Off Power is not available to the system

and the AC cable is disconnected. The
power status light is not lit.

0 Watts

Soft Off Power is available to the system, the

AC cable is connected, and the power
status light is off.

1-2 Watts

Sleep Power is available to the system, the

AC cable is connected, and the
computer is in a low power/standby
mode. The power status light is
amber.

27 Watts

Top

Back to Product Description

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home

Removal &

Replacement

Jumpers & Switches Specifications

Product Description

Power Cord Set Requirements

The voltage select switch feature on the computer allows it to operate from any line voltage
between 120 and 240 volts AC.

The power cord set (flexible cord and wall plug) supplied with the computer meets the

general

requirements for use in the country where the computer was purchased.

Power cord sets for use in other countries must meet the requirements of the country where the
computer is used. For more information on power cord set requirements, contact a Compaq

authorized dealer, reseller, or service provider.

General Requirements

The requirements listed below are applicable to all countries.

1. The length of the power cord set must be at least 6.00 feet (1.8 m) and no longer than 9.75
feet (3.0 m).

2. All power cord sets must be approved by an acceptable accredited agency responsible for
evaluation in the country where the power cord set will be used.

3. The power cord set must have a minimum current capacity of 10A and a nominal voltage
rating of 125 or 250 volts AC, as required by each country's power system.

4. To mate with the appliance inlet on the Switch Box, the appliance coupler must meet the
mechanical configuration of an EN 60 320/IEC 320 Standard Sheet C13 connector.

Country-Specific Requirements

Power Cord Set Requirements by Country

Country Accredited

Agency

Applicable Note
Numbers

Australia EANSW 1
Austria OVE 1
Belgium CEBC 1
Canada CSA 2
Denmark DEMKO 1
Finland SETI 1
France UTE 1
Germany VDE 1
Italy IMQ 1
Japan JIS 3
Norway NEMKO 1
Sweden SEMKO 1
Switzerland SEV 1
United Kingdom BSI 1
United States UL 2

NOTES:

1. The flexible cord must be <HAR> Type HO3VV-F, 3-conductor, 1.0 mm2 conductor size. Power
cord set fittings (appliance coupler and wall plug) must bear the certification mark of the agency
responsible for evaluation in the country where it will be used.

2. The flexible cord must be Type SJT-2 or equivalent, No. 18 AWG, 3-conductor. The wall plug
must be a two-pole grounding type with a NEMA 5-15P (15A, 125V) or NEMA 6-15P (15A, 250V)
configuration.

3. The appliance coupler, flexible cord, and wall plug must bear a "T" mark and registration
number in accordance with the Japanese Dentori Law. Flexible cord must be Type VCT or VCTF, 3­conductor, 0.75mm2 conductor size. The wall plug must be a two-pole type with a Japanese
Industrial Standard C8303 (15A, 125V) configuration.

Back to Product Description

United States January 2, 2003

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Removal and Replacement

Service Considerations - Optical Drive Cable Positions

Cable Positions

Optical Drive

Digital Creativity
Imaging Center

3.5-Inch Hard Drive

5.25-Inch Hard Drive
Zip Drive
Diskette Drive
Service Considerations

Index Page

db.jpg (73195 bytes)

System board may vary from the one shown.

Connect CD/DVD data cable
to system board connector
(J7 or IDE2).

If connecting CD/DVD and CD­RW, use cable drive 0 to
CD/DVD and drive 1 to CD­RW.

Back to Removal and Replacement

privacy and legal statement

United States January 2, 2003

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Removal and Replacement

Service Considerations - Digital Creativity Imaging Center Cable Positions

Cable Positions

Optical Drive

Digital Creativity
Imaging Center

3.5-Inch Hard Drive

5.25-Inch Hard Drive
Zip Drive
Diskette Drive
Service Considerations

Index Page

dg.jpg (59140 bytes)

System board and cable size may vary from the one shown.

Connect the Digital Creativity
Imaging Center (or front I/O
panel) cable to system board
connector (J4 or USB2).

Back to Removal and Replacement

privacy and legal statement

United States January 2, 2003

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Removal and Replacement

Service Considerations - 3.5-Inch Hard Drive Cable Positions

Cable Positions

Optical Drive
Digital Creativity

Imaging Center

3.5-Inch Hard Drive

5.25-Inch Hard Drive
Zip Drive
Diskette Drive
Service Considerations

Index Page

dc.jpg (76079 bytes)

System board may vary from the one shown.

WARNING:
AC power
must be
disconnected.

Connect the hard drive data
cable to system board
connector (J6 or IDE1).

Back to Removal and Replacement

privacy and legal statement

United States January 2, 2003

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Removal and Replacement

Service Considerations - 5.25-Inch Hard Drive Cable Positions

Cable Positions

Optical Drive
Digital Creativity

Imaging Center

3.5-Inch Hard Drive

5.25-Inch Hard Drive

Zip Drive
Diskette Drive
Service Considerations

Index Page

de.jpg (76660 bytes)

System board may vary from the one shown.

Connect the hard drive data
cable to system board
connector (J6).

If connecting a hard drive
and a zip drive, use cable
drive 0 to hard drive and
drive 1 to zip drive.

Back to Removal and Replacement

privacy and legal statement

United States January 2, 2003

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Removal and Replacement

Service Considerations - Zip Drive Cable Positions

Cable Positions

Optical Drive
Digital Creativity

Imaging Center

3.5-Inch Hard Drive

5.25-Inch Hard Drive

Zip Drive

Diskette Drive
Service Considerations

Index Page

df.jpg (70984 bytes)

Connecting Zip
Drive Cable

Without
CD-RW:

Use the same
cable to connect
the CD/DVD and
Zip drive.

Connect the data
cable drive 0 to
CD/DVD and drive
1 to Zip drive,
then connect to
system board (J7
or IDE2).

With CD­RW:

Use the same
cable to connect
the hard drive
and Zip drive.

Connect the data
cable drive 0 to
hard drive and
drive 1 to Zip
drive, then
connect to system
board (J6 or
IDE1).

Back to Removal and Replacement

privacy and legal statement

United States January 2, 2003

Maintenance & Service Guide

Presario 7800 Series and 5900T Personal Computers

MSG Index Product Description Troubleshooting Illustrated Parts

Home Removal & Replacement Jumpers & Switches Specifications

Removal and Replacement

Service Considerations - Diskette Drive Cable Positions

Cable Positions

Optical Drive
Digital Creativity

Imaging Center

3.5-Inch Hard Drive

5.25-Inch Hard Drive
Zip Drive

Diskette Drive

Service Considerations
Index Page

dh.jpg (75273 bytes)

System board may vary from the one shown.

Connect diskette drive data
cable to system board
connector (J5 or FDD1).

Back to Removal and Replacement

privacy and legal statement