Compaq Presario 5900T Maintenance & Service Manual

Compaq
Brand
Compaq
Model
Presario 5900T
Category
TVs & monitors
Type
Maintenance & Service Manual

This manual is also suitable for

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
United States December 31, 2002
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
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
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
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
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.
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
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
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
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
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
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.
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
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
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
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
CD-
RW
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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 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
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
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
privacy and legal statement
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
  • Page 1 1
  • Page 2 2
  • Page 3 3
  • Page 4 4
  • Page 5 5
  • Page 6 6
  • Page 7 7
  • Page 8 8
  • Page 9 9
  • Page 10 10
  • Page 11 11
  • Page 12 12
  • Page 13 13
  • Page 14 14
  • Page 15 15
  • Page 16 16
  • Page 17 17
  • Page 18 18
  • Page 19 19
  • Page 20 20
  • Page 21 21
  • Page 22 22
  • Page 23 23
  • Page 24 24
  • Page 25 25
  • Page 26 26
  • Page 27 27
  • Page 28 28
  • Page 29 29
  • Page 30 30
  • Page 31 31
  • Page 32 32
  • Page 33 33
  • Page 34 34
  • Page 35 35
  • Page 36 36
  • Page 37 37
  • Page 38 38
  • Page 39 39
  • Page 40 40
  • Page 41 41
  • Page 42 42
  • Page 43 43
  • Page 44 44
  • Page 45 45
  • Page 46 46
  • Page 47 47
  • Page 48 48
  • Page 49 49
  • Page 50 50
  • Page 51 51
  • Page 52 52
  • Page 53 53
  • Page 54 54
  • Page 55 55
  • Page 56 56
  • Page 57 57
  • Page 58 58
  • Page 59 59
  • Page 60 60
  • Page 61 61
  • Page 62 62
  • Page 63 63
  • Page 64 64
  • Page 65 65
  • Page 66 66
  • Page 67 67
  • Page 68 68
  • Page 69 69
  • Page 70 70
  • Page 71 71

Compaq Presario 5900T Maintenance & Service Manual

Compaq
Brand
Compaq
Model
Presario 5900T
Category
TVs & monitors
Type
Maintenance & Service Manual
This manual is also suitable for
Download PDF
report

Ask a question and I''ll find the answer in the document

Finding information in a document is now easier with AI

Related papers

Other documents