Compaq Compaq Presario 7400 Series Manual

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Maintenance and Service Guide
Compaq Presario 7400 Series Computers
Product Description
Troubleshooting
Illustrated Parts Catalog
Removal & Replacement
Procedures
Jumper & Switch Information
Specifications
See the Notice for copyright and trademark information, and the Preface for symbol conventions and
Technician Notes.
Download ZIP file of complete MSG to 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.
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Maintenance and Service Guide
Compaq Presario 7400 Series Computers
MSG index Product Description Troubleshooting Illustrated Parts Catalog
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PRODUCT DESCRIPTION
Product Description
Models and features
CPU controls and lights
Keyboard
Creativity Action Center
Back components
Power cord requirements
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Maintenance and Service Guide
Compaq Presario 7400 Series Computers
MSG index Product Description Troubleshooting Illustrated Parts Catalog
Home Removal & Replacement Jumper & Switch Information Specifications
TROUBLESHOOTING
Troubleshooting
Clearing CMOS
Power-On Self Test
(POST)
Configuration
Diagnostics Software
Troubleshooting
without diagnostics
This section provides troubleshooting information for Compaq Presario 7400 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.
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Maintenance and Service Guide
Compaq Presario 7400 Series Computers
MSG index Product Description Troubleshooting Illustrated Parts Catalog
Home Removal & Replacement Jumper & Switch Information Specifications
ILLUSTRATED PARTS
NOTE: The computer serial number should be provided to Compaq whenever
requesting information or ordering spare parts.
Illustrated Parts
System unit
Mass storage devices
Cables
Standard board
Fax/modem
Keyboards
Monitors
Miscellaneous parts
Return kits
Documentation &
software
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Maintenance and Service Guide
Compaq Presario 7400 Series Computers
MSG index Product Description Troubleshooting Illustrated Parts Catalog
Home Removal & Replacement Jumper & Switch Information Specifications
REMOVAL & REPLACEMENT PROCEDURES
This section provides general service information for Compaq 7400 Series Personal Computers. Adherence to the
procedures and precautions described in this section is essential for safe and proper service.
Removal Sequence
Before you begin
Serial number
Chassis
Power supply
Mass storage devices
Fax-modem
PCI bracket
System board
Instant On button board
Creativity Action Center
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Maintenance and Service Guide
Compaq Presario 7400 Series Computers
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Home Removal & Replacement Jumper & Switch Information Specifications
JUMPER & SWITCH INFORMATION - INDEX PAGE
Jumper & Switch Information
System board
Hard drive
CD drive
DVD drive
CD-RW
Zip drive (available on select
models)
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Maintenance and Service Guide
Compaq Presario 7400 Series Computers
MSG index Product Description Troubleshooting Illustrated Parts Catalog
Home Removal & Replacement Jumper & Switch Information Specifications
SPECIFICATIONS - INDEX PAGE
This section provides physical, environmental, and performance specifications for Compaq 7400 Series Personal
Computers.
System
Power supply
Diskette drive
Hard drive
DVD drive
CD drive
Mouse
Fax-modem
Zip drive
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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. © 1999 Compaq Computer Corporation. All rights reserved. Compaq, Presario Registered U. S. Patent and Trademark Office.
Microsoft, MS-DOS, and Windows are registered trademarks of Microsoft Corporation. Windows 95 and Windows 98 are trademarks 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.
Online Maintenance and Service Guide
Compaq Presario 7400 Series Personal Computers
September 1999
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PREFACE
This Maintenance and Service Guide is a troubleshooting guide that can be used for reference when servicing the
Compaq Presario 7400 Series Personal Computers.
Compaq Computer Corporation reserves the right to make changes to the Compaq Presario 7400 Series Personal
Computers without notice.
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 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
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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 front right side of the chassis (between the CD/DVD/Zip drives and the drive door
hinge) and also on the back of the computer above the power supply.
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■
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Maintenance and Service Guide
Compaq Presario 7400 Series Computers
MSG index Product Description Troubleshooting Illustrated Parts Catalog
Home Removal & Replacement Jumper & Switch Information Specifications
Removal Sequence
Before you begin
Serial number
Chassis
Power supply
Mass storage devices
Fax-modem
PCI bracket
System board
Instant On button board
Creativity Action Center
REMOVAL & REPLACEMENT PROCEDURES
Before You Begin
Electrostatic discharge●
Service considerations●
Preparation for disassembly●
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United States
Maintenance and Service Guide
Compaq Presario 7400 Series Computers
MSG index Product Description Troubleshooting Illustrated Parts Catalog
Home Removal & Replacement Jumper & Switch Information Specifications
Removal Sequence
Before you begin
Serial number
Chassis
Power supply
Mass storage devices
Fax-modem
PCI bracket
System board
Instant On button board
Creativity Action Center
REMOVAL & REPLACEMENT PROCEDURES
Serial Number
The computer serial number should be provided to Compaq whenever you
request information or order spare parts. The serial number 1is located on the
back of the computer above the power supply and also on the cover next to the
bezel.
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United States
Maintenance and Service Guide
Compaq Presario 7400 Series Computers
MSG index Product Description Troubleshooting Illustrated Parts Catalog
Home Removal & Replacement Jumper & Switch Information Specifications
Removal Sequence
Before you begin
Serial number
Chassis
Power supply
Mass storage devices
Fax-modem
PCI bracket
System board
Instant On button board
Creativity Action Center
REMOVAL & REPLACEMENT PROCEDURES
Chassis
Removal
1Perform the
preparation
procedures.
2Remove the
three screws
from the
back of the
computer.
3Grasp the
handle on
the back of
the
computer
chassis and
pull to
separate the
chassis from
the cover.
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4Lift up on
the chassis
and pull it
completely
out of the
cover.
Replacement
To replace
the chassis,
reverse this
procedure.
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United States
Maintenance and Service Guide
Compaq Presario 7400 Series Computers
MSG index Product Description Troubleshooting Illustrated Parts Catalog
Home Removal & Replacement Jumper & Switch Information Specifications
Removal Sequence
Before you begin
Serial number
Chassis
Power supply
Mass storage devices
Fax-modem
PCI bracket
System board
Instant On button board
Creativity Action Center
REMOVAL & REPLACEMENT PROCEDURES
Power Supply
1Perform preparation procedures.
2Remove the chassis.
3Gently lay the computer on its side with back
connectors closest to the working surface.
4Remove the four screws that secure the
power supply to the back of the chassis as
shown.
5Slide the power supply away from the back
of the chassis , rotate it up and away ,
and slide it to the right to remove it from the
slots.
6Disconnect the power supply cables from the
system board, hard drive, floppy drive, and
CD/DVD drive and remove the cables from
the chassis.
Replacement
To replace the power supply, reverse this
procedure.
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United States
Maintenance and Service Guide
Compaq Presario 7400 Series Computers
MSG index Product Description Troubleshooting Illustrated Parts Catalog
Home Removal & Replacement Jumper & Switch Information Specifications
Removal Sequence
Before you begin
Serial number
Chassis
Power supply
Mass storage devices
Fax-modem
PCI bracket
System board
Instant On button board
Creativity Action Center
REMOVAL & REPLACEMENT PROCEDURES
Mass Storage
Devices
1
CD/DVD/CD-RW
drive
23.5" Hard drive
or 5.25" Hard
drive
3Zip drive
(available on
select models)
4Diskette drive
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United States
Maintenance and Service Guide
Compaq Presario 7400 Series Computers
MSG index Product Description Troubleshooting Illustrated Parts Catalog
Home Removal & Replacement Jumper & Switch Information Specifications
Removal Sequence
Before you begin
Serial number
Chassis
Power supply
Mass storage devices
Fax-modem
PCI bracket
System board
Instant On button board
Creativity Action Center
REMOVAL & REPLACEMENT PROCEDURES
Fax/modem
Removal
1Perform
preparation
procedures.
2Remove the
chassis.
3Remove the
power supply.
4Remove the
screws
holding the
option card
bracket to the
chassis.
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5Remove the
bracket and
pull the
fax/modem
out of the
slot.
NOTE: Select
models may
contain an
Ethernet network
card.
Replacement
To replace the
fax/modem,
reverse this
procedure.
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Maintenance and Service Guide
Compaq Presario 7400 Series Computers
MSG index Product Description Troubleshooting Illustrated Parts Catalog
Home Removal & Replacement Jumper & Switch Information Specifications
Removal Sequence
Before you begin
Serial number
Chassis
Power supply
Mass storage devices
Fax-modem
PCI bracket
System board
Instant On button board
Creativity Action Center
REMOVAL & REPLACEMENT PROCEDURES
PCI Bracket
Removal
1Perform
preparation
procedures.
2Remove the
chassis.
3Gently lay
the
computer on
its side with
back
connectors
closest to
the working
surface.
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