Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Welcome to the Maintenance & Service Guide for the Presario Model 1245
...
Notice
Preface
Product
Description
Troubleshooting
Illustrated
Parts Catalog
Removal &
Replacement
Procedures
Specifications
Connector Pin
Assignments
Battery Pack
Operations
This online guide is designed to serve the needs of those whose job it is to repair Compaq products.
This Guide will be periodically maintained and updated online as needed.
For content comments or questions, contact
To report a technical problem, contact your Regional Support Center or IM Help Center.
Customer Support.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
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. 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 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 1200 Series Portable Computers
First Edition (June 1999)
Compaq Computer Corporation
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Preface
This Maintenance and Service Guide is a troubleshooting guide that can be used for
reference when servicing the Compaq Presario Model 1245 Portable Computer.
Compaq Computer Corporation reserves the right to make changes to the Model 1245 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
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 is located on the bottom of the computer.
Locating Additional Information
The following documentation is available to support this product:
● Compaq Presario 1200 Series Portable Computer documentation set
● Introducing Windows 95 Guide
● Service Training Guides
● Compaq Service Advisories and Bulletins
● Compaq QuickFind
● Compaq Service Quick Reference Guide
Maintenance & Service Guide
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Product Description
Presario 1200 Series
Model: 1245
Models and Features
Controls and Lights
Left Side
Components
Right Side
Components
Bottom of Unit
Rear Connectors
Power Management
for Windows 98
Compaq
Presario
Portable
Computers...
are a
continuation
of new
generation
multimedia
portable
computers
with
innovative
integrated
designs,
outstanding
audio and
video,
advanced
core
features, and
attractive
styling.
This fullfunction,
AMD-K6
portable
computer
allows full
desktop
functionality.
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Models & Features
Models and
Features
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
Pin Assignments | Battery Pack Operations
Controls and
Lights
Left Side
Components
Right Side
Components
Bottom of
Unit
Rear
Connectors
Power
Management
Portable Computer Model 1245
Display
Processor
Hard Drive
CD Drive
Modem
Battery
System Memory
Compaq Presario 1200 Series
12. 1" HPA
AMD-K6II 333-MHz MMX
3.2-GB
24× MAX
56K Metis (or) 56K Khan
ES NiMH
32 MB
Maintenance & Service Guide
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Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Controls and Lights
Presario 1200 Series
Model: 1245
Models and
Features
Controls and
Lights
Left Side
Components
Right Side
Components
Bottom of
Unit
Rear
Connectors
Power
Management
for Windows
98
Front Panel
Components
1. Display
2. Power
Button
3.
Keyboard
4.TouchPad
5.
Speakers &
Ports
6. Palmrest
7. (L)
TouchPad
Button
8. (R)
TouchPad
Button
9. Instant
Internet
Access
Button
10. Instant
Search
Button
11. Scroll
up/down
Button
12. Instant
ECommerce
Button
(or Retail
Center)
NOTE:
Depending on
the model,
the icon for
this button
may be either
a check mar
or a
shopping
cart.
k
13. Instant
E-mail
14. Power
Light
15. Battery
Charge
Light
16. AC
Adapter
Light
17.
Headphone
Jack
18. Volume
Down
Button
19. Volume
Up Button
20.
Microphone
Jack
21.
Number
Lock Light
22. Cap
Lock Light
23. Scroll
Lock Light
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Left Side Components
Models and
Features
Controls and
Lights
Left Side
Components
Right Side
Components
Bottom of
Unit
Rear
Connectors
Power
Management
for Windows
98
1. PC
Card
Eject
Lever
2. PC
Card
Slot
3.
Diskette
Drive
Slot
4.
Diskette
Eject
Button
Maintenance & Service Guide
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Pin Assignments | Battery Pack Operations
Right Side Components
Presario 1200 Series
Model: 1245
Models and
Features
Controls and
Lights
Left Side
Components
Right Side
Components
Bottom of
Unit
Rear
Connectors
Power
Management
for Windows
98
1. Battery
Compartment.
2. CD Drive.
3. CD Drive
Eject Button.
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Bottom of Unit
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
Pin Assignments | Battery Pack Operations
Models and
Features
Controls and
Lights
Left Side
Components
Right Side
Components
Bottom of
Unit
Rear
Connectors
Power
Management
for Windows
98
1.
Upgradeable
memory
compartment.
2. Rubber
feet.
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Rear Connectors
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
Pin Assignments | Battery Pack Operations
Models and
Features
Controls and
Lights
Left Side
Components
Right Side
Components
Bottom of
Unit
Rear
Connectors
Power
Management
for Windows
98
1. AC Adapter.
2. Parallel
Printer Port.
3. Serial Port.
4. Fan Exhaust.
5. External
Monitor Port.
6. USB.
7.
Keyboard/Mouse
Port.
8. Modem Jack.
9. Security Slot.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
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Pin Assignments | Battery Pack Operations
Power Management for Windows 98
The following power management features are available for
conserving AC power and extending battery operating time:
Power Management
Settings
Sleep
Hibernation
Battery Operating
Time
Rebooting After
Lockup
Servicing Your
Computer
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Power Management for Windows 98
Power Management Settings
Depending on your patterns of computer use, you can set different levels of
power management. These different power management levels can be
activated based on the amount of time passed since the last system activity.
System activity examples include keyboard or mouse movement, CD or DVD
playback (while under program control that monitors Sleep), and modem use.
You can select different conditions or power schemes through Power
Management.The optional settings are Home/Office Desk, Portable/
Laptop, and Always On. From the default settings, you can change the
following settings:
● the System goes to Sleep (Standby) mode
● the screen times out and goes blank
● the hard drive spins down
Each of these system components goes to sleep after the selected or default
periods of inactivity.
(The setting for hard drive must be less than, or equal to, the setting for
System.)
IMPORTANT:
System Standby to Never.
If you're on a network, it's recommended that you set
There are five categories of power management settings under the Control Panel.
The default settings for each feature are listed in the following tables:
Power Management Properties
Tab: Power Schemes: Plugged in
Always on System
Never
Standby:
Turn OFF Monitor
3 hours
Running on Batteries
After 15 minutes
Never
Turn OFF Hard Drive
After 15 minutes
After 10 minutes
Power Management Properties
Tab: ALARMS::
Low Battery Alarm: 10%
Critical Battery Alarm 0%
Alarm Actions: X Display Message
Notification:
Text Action: No Action
Power Management Properties
Tab: POWER METER: Default
Tab: ADVANCED Default
(show power meter on taskbar)
Display Properties
Tab: Monitor: Laptop Display (800 x 600)
Return to Power Management for Windows 98 list.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Power Management for Windows 98
Sleep
You can select Sleep mode instead of turning off the computer when you have finished using it. This allows
the computer to wake up faster than turning it off and saves power over the active (On) mode. Compaq
Presario Notebook computers have two levels of sleep—Hibernation and Sleep.
Hibernation - pushing the power button once causes your computer to perform a save to disk followed by a
shut down of the computer into Off mode.
Sleep - is a low-power mode, also referred to as Standby mode. While in Sleep mode, your computer
maintains system information and open files. Unsaved information is lost if you turn off your system before
system wake-up, or if you lose power while using the AC adapter.
CAUTION: While in Sleep mode, your computer maintains system information and open files.
Unsaved information is lost if you turn off your system before system wake-up, or if you
lose power while using the AC adapter.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Power Management for Windows 98
Hibernation Mode
Hibernation helps conserve battery life and protect your data. Hibernation can
be a routine power saving event, or can be the result of a low battery
condition. As it enters Hibernation, your computer displays a progress screen,
as it automatically saves the machine state before it shuts down and turns
itself off. Your computer automatically goes into Hibernation when the
battery has little power left, or when the system (operating on battery power)
has been in Sleep mode for more than an hour. You can also manually initiate
Hibernation by pressing the power button once while the system is active. To
restore the computer's previous state, simply press the power button once
again. While waking up, the computer displays a progress screen.
The following table shows the conditions and indicators for getting in and out
of the various power management modes—Sleep, Hibernation, and Off.
Mode To Initiate To End Indicators
Sleep
Manual keys
Press any key Flashing green
combination
- Fn+F4
Time Out Default 15 minutes if on Battery
power (system will not
time out to sleep)
Hibernate Manual - Press Power
Button once
Time Out Default If low battery or after 1
hour of sleep (system will
not Hibernate if on AC
power)
Press Power
Button once
Power LED
No Power
LED, blank
screen
Off Perform normal Windows
shutdown via the start
button, or press and hold
down the power button
for 4 seconds
Return to Power Management for Windows 98 list.
Press Power
Button once
No Power
LED, blank
screen
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Power Management for Windows 98
Rebooting After a Lockup
Occasionally you may encounter a frozen keyboard or a locked screen. To
reboot your computer (as if from a cold start), press and hold down the Power
Button for at least four seconds, which will cause a manual shutdown. Then,
restart the computer with a single press of the Power Button. If it still does
not recover, press the Power Button and hold it for four seconds to power off
the computer. Then, remove the battery or unplug the AC power for at least
30 seconds. Reinsert the battery or reconnect AC power and press the Power
Button once to reboot.
Return to Power Management for Windows 98 list.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Power Management for Windows 98
Servicing Your Computer - Full Off Mode
If you need to install or replace components in your system, you must turn
the computer off completely.
Place the computer into Off mode, unplug it from the outlet, and remove the
battery
(see battery section for instruction on removing battery).
Return to Power Management for Windows 98 list.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Illustrated Parts Catalog
This section provides a breakdown and identifies the spare parts ordering
number associated with each item for the Compaq Presario 1200 Series Portable
Computers.
System Unit
Boards
Display Assembly
Mass Storage Devices
Miscellaneous Cable Kit
Cables
Miscellaneous Hardware &
Plastics Kit
Miscellaneous Parts
Documentation & Software
System Unit
Keyboards
Place cursor over each device to obtain its part number.
System Unit
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Boards
Display
Assembly
Mass Storage
Devices
Miscellaneous
Cable Kit
Cables
Miscellaneous
Hardware and
Plastics Kit
Miscellaneous
Parts
Documentation
and Software
| Home Page | Notice | Preface | Product Description | Troubleshooting
Modem, K-56.0 Kbps Data/Fax w/o SRAM (Domestic) 138659-001
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Boards
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
Pin Assignments | Battery Pack Operations
System Unit
Boards
Display
Assembly
Mass Storage
Devices
Miscellaneous
Cable Kit
Cables
Miscellaneous
Hardware and
Plastics Kit
Miscellaneous
Parts
Documentation
and Software
Place cursor over each device to
obtain its part number.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Display Assembly
System Unit
Boards
Display
Assembly
Mass Storage
Devices
Miscellaneous
Cable Kit
Cables
Miscellaneous
Hardware and
Plastics Kit
Miscellaneous
Parts
Documentation
and Software
Maintenance & Service Guide
Presario 1200 Series
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Mass Storage Devices
Model: 1245
System Unit
Boards
Display
Assembly
Mass Storage
Devices
Miscellaneous
Cable Kit
Cables
Miscellaneous
Hardware and
Plastics Kit
Miscellaneous
Parts
Documentation
and Software
Place cursor over each device to obtain its part number.
Maintenance & Service Guide
Presario 1200 Series
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Miscellaneous Cables Kit
Model: 1245
System Unit
Boards
Display
Assembly
Mass Storage
Devices
Miscellaneous
Cable Kit
Cables
Miscellaneous
Hardware and
Plastics Kit
Miscellaneous
Parts
Documentation
and Software
Place cursor over each device for a
description of that item.
Spare Part Number: 330946-001
| Home Page | Notice | Preface | Product Description | Troubleshooting
North America 293831-001
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Cables
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
Pin Assignments | Battery Pack Operations
System Unit
Boards
Display
Assembly
Mass Storage
Devices
Miscellaneous
Cable Kit
Cables
Miscellaneous
Hardware and
Plastics Kit
Miscellaneous
Parts
Description Spare Part Number
Power Cord
[FrontPage Save Results Component]
Documentation
and Software
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
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Pin Assignments | Battery Pack Operations
Miscellaneous Hardware and Plastics Kit
System Unit
Boards
Display
Assembly
Mass Storage
Devices
Miscellaneous
Cable Kit
Miscellaneous Hardware and Plastics Kit
Hardware Spare Part Number:
346853-001
Plastics Kit Spare Part Number
142657-001
Description Quantity
Cables
Miscellaneous
Hardware and
Plastics Kit
Miscellaneous
Parts
Documentation
and Software
1. Door, Battery Pack 1 each
2. Cover, Memory Module 1 each
3. Door, PCMCIA 2 each
4. Hinge (Clutch) Cover, Left 1 each
5. Hinge (Clutch) Cover, Right 1 each
6. Rubber Foot 10 each
7. Hard Drive Mounting Bracket 1 each
Maintenance & Service Guide
Miscellaneous Parts (not shown):
Presario 1200 Series
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Pin Assignments | Battery Pack Operations
Miscellaneous Parts
System Unit
Boards
Display
Assembly
Model: 1245
Mass Storage
Devices
Miscellaneous
Cable Kit
Cables
Miscellaneous
Hardware and
Plastics Kit
Miscellaneous
Parts
Documentation
and Software
Use the scroll down menu for the description and spare part
number of spare parts Not Shown.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Documentation and Software
System Unit
Boards
Display
Assembly
Mass Storage
Devices
Miscellaneous
Cable Kit
Cables
Miscellaneous
Hardware and
Plastics Kit
Miscellaneous
Parts
Description Spare Part
Number
Reference Guide
US, Canada
French Canada
Latin America, Mexico
Australia, New Zealand, Asia,
Pacific, United Kingdom
Japan
France, Belgium
Italy
Sweden
117894-001
117894-121
117894-161
117894-031
117894-291
117894-051
117894-061
117894-101
117894-331
Netherlands
Quick Restore CD
Documentation
and Software
US, Canada
French Canada
Latin America, Mexico
Australia, New Zealand, Asia,
Pacific
United Kingdom
Japan
France,
Belgium
Italy
Sweden
Netherlands
Feature Guide
US, Canada
French Canada
Latin America, Mexico
122315-001
122315-121
122315-161
122315-371
122315-031
122315-291
122315-051
122315-AK1
122315-061
122315-101
122315-331
120231-001
120231-121
120231-161
Australia, New Zealand, Asia,
Pacific, United Kingdom
Japan
France, Belgium
Italy
Sweden
120231-031
120231-291
120231-051
120231-061
120231-101
120231-331
Netherlands
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Removal and Replacement Procedures
This section explains the removal and replacement procedures for the
computer.
Serial Number Location
Disassembly
Sequence
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Cover with
Touch Pad
Heatspreader
Keyboard
Processor
Hard Drives
CD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Upper CPU
Report the computer [
] serial number to Compaq
when requesting information or ordering spare parts.
Cover
Speaker
Assembly
Diskette Drive
Fan Assembly
System Board
Dip Switch
Settings
Memory
Module
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
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Pin Assignments | Battery Pack Operations
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 an electrostatic discharge
(ESD) may not be affected at all and will work perfectly
throughout a normal cycle. Although it may function normally
for a while, it is possible for the exposed device's internal
layers to degrade, reducing its life expectancy considerably.
● Networks built into multiple integrated circuits provide some
protection, but in many cases, the discharge can contain
enough power to alter device parameters and melt silicon
junctions.
Generating Static
This table shows the different electrostatic voltage levels generated
by various activities.
NOTE: 700 volts can degrade a
product.
Typical Electrostatic Voltages
Event
10% 40% 55%
Relative Humidity
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
Removing DIPS from vinyl
trays
Removing DIPS from
Styrofoam
Removing bubble pack
from PCBs
Packing PCBs in foam-lined
box
2,000 V 700 V 400 V
11,500 V 4,000 V 2,000 V
14,500 V 5,000 V 3,500 V
26,000 V 20,000 V 7,000 V
21,000 V 11,000 V 5,000 V
Return to
Removal & Replacement Procedures
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
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Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Service Considerations
Listed below are some of the considerations that you should keep in mind during the
disassembly and re-assembly of the computer.
Tool and Software Requirements
To service the computer, you need the following:
● Compaq screwdriver kit (Spare Part No. 161946-001)
● Torx T-9 screwdriver
● 3/16-inch and 5mm nut drivers (for screwlocks and standoffs)
● Small, standard screwdriver
● Small, Phillips screwdriver
● Diagnostics software
Screws
The screws used in the computer are not interchangeable. If an incorrect screw is used during the
reassembly process it can damage the unit.
Compaq strongly recommends that each screw removed during disassembly be kept with the part
from which it was removed, then returned to the original location.
IMPORTANT:
from the work area to prevent damage.
Return to Removal & Replacement Procedures
As each subassembly is removed from the computer, it should be placed away
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Cables and Connectors
Most cables used throughout the units are ribbon cables; they must be handled with
extreme care to avoid damage.
Use the following precautions when handling cables to prevent damage to the cable or
computer:
● Apply only the required tension to seat or unseat the cables during insertion and removal
from the connector.
● Handle cables by the connector whenever possible.
● In all cases, avoid bending, twisting, or tearing the cables, and ensure that the cables are
routed in such a way that they cannot be caught or snagged by parts being removed or
replaced. Handle flex cables with extreme care; they can tear easily.
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.
Select the desired illustration.
● Removing a Cable from a ZIF Connector.
● The ribbon cable position for the 3.2-GB, 4.0-GB, 4.3-GB, and 6.4-GB hard drive.
● The ribbon cable position for the CD drive.
● The ribbon cable position for the diskette drive.
● The cable position for the speaker assembly.
Plastic Parts
Plastic parts can be damaged if excessive force is used during disassembly and reassembly. When
handling the plastic parts, use care. Apply pressure only at the points designated in the
maintenance instructions.
Return to
Removal & Replacement Procedures
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
ZIF Connectors
The computer uses a zero insertion force
(ZIF) connector for the keyboard cable to the
system board. To remove a cable from a ZIF
connector, lift both corners of the ZIF
connector and slide simultaneously with
constant light force.
CAUTION: A ZIF connector and
its attached cable can be easily
damaged. Handle only the
connector slide when removing
or replacing a cable. Never pull
or twist on the cable while it is
connected.
CAUTION: When servicing this
computer, ensure that cables
are placed in their proper
location during the reassembly
process. Improper cable
placement can damage the
computer.
Back to
Cables and Connectors.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
The ribbon cable position for the 3.2-GB hard drive.
Back to Cables and Connectors.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
The ribbon cable position for the CD drive.
Back to Cables and Connectors.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
The ribbon cable position for the diskette drive.
Back to
Cables and Connectors.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
The cable position for the speaker assembly.
Back to Cables and Connectors.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Preparing the Computer for Disassembly
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest Cover
with Touch Pad
Heatspreader
Before beginning removal and replacement
procedures,
complete the following procedures:
1. Disconnect AC power and any external devices.
2. Remove the battery pack.
3. Remove any PC Cards.
WARNING: Metal objects can damage the battery pack as well as the battery
contacts in the battery compartment. To prevent damage, do not allow metal
objects to touch the battery contacts. Place only the battery pack for the
Compaq Presario Model 1245 Portable Computer into the battery compartment.
Keyboard
Processor
Hard Drives
CD Drive
Battery Charger
Board
Modem
Display Panel
Assembly
Upper CPU
Cover
Speaker
Assembly
NOTE:
Do not force the battery pack into the bay if insertion does not occur easily.
CAUTION: Do not crush, puncture, or incinerate the battery pack. Do not open a
battery pack, as this damages the pack, makes it unusable, and exposes
potentially harmful battery components. There are no field-serviceable parts
located inside the battery pack.
The Compaq Presario Model 1245 Portable Computer has several screws of
various sizes which are not interchangeable. Care must be taken during
reassembly to ensure that the correct screws are used in their correct location.
During removal please keep respective screws with their associated subassembly.
Diskette Drive
Fan Assembly
System Board
Dip Switch
Settings
Memory Module
Return to
Removal & Replacement Procedures.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Removing the Battery Pack
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Cover with
Touch Pad
To remove
the battery
pack,
complete
the
following
steps:
1. Slide the
battery pack
compartment
door down
Heatspreader
Keyboard
Processor
Hard Drives
CD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Upper CPU
Cover
and remove
it from the
battery pack.
Next Step
Speaker
Assembly
Diskette Drive
Fan Assembly
System Board
Dip Switch
Settings
Memory
Module
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
2. Pull forward on the
battery pack tab
and remove the
battery pack from
the chassis.
To replace the battery
pack, reverse the
previous procedures.
Return to
Removal &
Replacement
Procedures
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Removing the Palmrest Cover with Touch Pad
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Cover with
Touch Pad
Heatspreader
The palmrest
cover with touch
pad must be
removed to gain
access to any of
the interior
components of the
computer, and it is
the first
component that
has to be removed
to gain access to
the interior
components.
It is not
necessary
Keyboard
Processor
Hard Drives
CD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Upper CPU
Cover
Speaker
to remove
the display
panel
NOTE:
assembly to
access the
interior
components
of the
computer.
To remove the
palmrest cover
with touch pad,
complete the
following steps:
Assembly
Diskette Drive
Fan Assembly
System Board
Dip Switch
Settings
Memory
Module
Prepare the
1.
computer for
disassembly.
2. Close the
computer and turn
the computer
upside down.
3. Remove four
screws from the
bottom of the
computer.
Next Step
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
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Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
4. Turn the computer
over (right side up),
pull forward on the
display latches to
release and open the
display assembly.
5. Lift up front end of
the palmrest cover with
touch pad and remove
it from the groove in
the chassis.
6. Tilt the palmrest
cover with touch pad,
allowing it to rest on
top of the keyboard,
and disconnect the flex
cable from the ZIF
connector on the
palmrest cover.
CAUTION: When
replacing the
palmrest cover
with touch pad,
ensure that the
cable is fully
inserted into the
ZIF connector on
the system board.
If the metal end
comes in contact
with the
keyboard, damage
may occur to the
computer.
To replace the palmrest
cover with touch pad,
reverse the previous
procedures.
When replacing
the palmrest
cover, ensure
NOTE:
properly routed
through the slot
on the Upper
CPU cover.
that the cable is
Return to
Removal &
Replacement
Procedures
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Removing the Heatspreader
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Cover with
Touch Pad
Heatspreader
To remove
the
heatspreader,
complete the
following
steps:
Prepare
1.
the computer
for
disassembly.
2. Remove
the palmrest
cover with
touch pad.
Keyboard
Processor
Hard Drives
CD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Upper CPU
Cover
Speaker
Assembly
3. Remove
Keyboard.
4. Remove
two screws
from the
heatspreader
and lift out of
the chassis.
To replace
the
heatspeader,
reverse the
previous
procedures.
Diskette Drive
Fan Assembly
System Board
Dip Switch
Settings
Memory
Module
Maintenance & Service Guide
Presario 1200 Series
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Removing the Keyboard
Model: 1245
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Cover with
Touch Pad
To remove the
keyboard,
complete the
following
steps:
Prepare the
1.
computer for
disassembly.
2. Remove
the palmrest
cover with
touch pad.
3. Turn the
keyboard
Heatspreader
Keyboard
Processor
Hard Drives
CD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Upper CPU
Cover
over, and
allow it to rest
on top of the
palmrest
cover with
touchpad slot
opening.
4. Remove
the
heatspreader .
5. Disconnect
the flex cable
from the ZIF
connector on
Speaker
Assembly
Diskette Drive
Fan Assembly
System Board
Dip Switch
Settings
Memory
Module
the system
board.
To replace the
keyboard,
reverse the
previous
procedures.
Return to
Removal &
Replacement
Procedures
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Removing the Processor
Electrostatic
Discharge
To remove
Service
Consideration
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Cover with
Touch Pad
Heatspreader
Keyboard
the
processor,
complete the
following
steps:
Prepare
1.
the computer
for
disassembly.
2. Remove
palmrest
cover with
touch pad.
Processor
Hard Drives
CD Drive
Battery
Charger
Board
Modem
Display Panel
Assembly
Upper CPU
Cover
Speaker
Assembly
Diskette
Drive
3. Remove
the
heatspreader.
4. Remove
the keyboard.
5. Insert a
small-blade
screwdriver
into the
bottom slot
opening on
the processor
and push
toward the
display to
release the
processor
Fan Assembly
System
Board
Dip Switch
Settings
Memory
Module
from the
chassis slot.
6. Lift the
processor out
of the
processor
chassis slot.
Next Step
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
To replace the processor complete the following
steps:
1. Insert the processor into the slot on the system board.
The notch on the left corner of the processor serves as an orientation
NOTE:
indicator. Align the notch on the left corner of the processor with the notch
on the left corner of the processor chassis slot.
When installing the processor into the chassis slot, be sure
NOTE:
2. Insert a small blade screw driver into the top slot opening on the
processor and push it away from the display to lock the processor.
3. Verify the switch settings.
Return to
that the hole pattern on the chassis slot lines up with the
pins on the processor. The processor should drop into the
socket without any force.
Removal & Replacement Procedures
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
CAUTION: When replacing the system board, ensure the dip switch voltage settings on the system board
are correct for the computer model and processor voltage marked on the processor chip. If the system board
dip switch voltage settings are not correct, damage may occur to the computer and/or system board.
NOTE:
The black area on the dip switch indicates the position of the switch.
Return to Removal & Replacement Procedures
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Removing the Hard Drive
Electrostatic
Discharge
Service
Consideration
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Cover with
Touch Pad
Heatspreader
To remove
the hard
drive,
complete
the following
steps:
1. Prepare
the
computer
for
disassembly.
2. Remove
the palmrest
Keyboard
Processor
Hard Drives
CD Drive
Battery
Charger
Board
Modem
Display Panel
Assembly
Upper CPU
Cover
Speaker
Assembly
cover with
touch pad.
3. Remove
the
keyboard.
4. Remove
two screws
from the
hard drive
mounting
bracket and
lift up the
hard drive.
Next Step
Diskette
Drive
Fan Assembly
System
Board
Dip Switch
Settings
Memory
Module
Maintenance & Service Guide
Presario 1200 Series
Models: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
5. Disconnect the hard
drive data cable from
the hard drive and
remove from the
chassis.
Next Step
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
To remove the hard
drive mounting
bracket, remove four
screws from the
mounting bracket as
shown in the
illustration.
To replace the hard
drive and hard drive
mounting bracket,
reverse the previous
procedures.
Return to
Removal &
Replacement
Procedures
Maintenance & Service Guide
Presario 1200 Series
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Removing the CD Drive
Model: 1245
Electrostatic
Discharge
Service
Consideration
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Cover with
Touch Pad
To remove
the CD drive,
complete the
following
steps:
1. Prepare
computer
the
for
disassembly.
2. Remove
the palmrest
cover with
touch pad.
Heatspreader
Keyboard
Processor
Hard Drives
CD Drive
Battery
Charger
Board
Modem
Display Panel
Assembly
Upper CPU
Cover
3. Remove
the
heatspreader.
4. Remove
the keyboard.
5. Remove
the two
screws
located at the
back of the
CD drive.
Next Step
Speaker
Assembly
Diskette
Drive
Fan Assembly
System
Board
Dip Switch
Settings
Memory
Module
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
6. Remove the two screws on the
bottom of the unit that secure the CD
bracket to the system board.
Next Step
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
7. Disconnect the CD
drive cable from the
CD drive and remove
the CD drive from the
chassis.
To replace the CD
drive, reverse the
previous procedures.
Return to
Removal &
Replacement
Procedures
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Removing the Battery Charger Board
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
To remove the
battery charger
board, complete
the following
steps:
1. Prepare the
computer for
disassembly.
2. Remove the
palmrest cover
with touch pad.
3. Remove the
hard drive.
Palmrest
Cover with
Touch Pad
Heatspreader
Keyboard
Processor
Hard Drives
CD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
4. Remove one
screw from the
battery charger
board, unplug
the board from
the connector
on the system
board, and lift
the battery
charger board
out of the
chassis.
To replace the
battery charger
board, reverse
Upper CPU
Cover
Speaker
Assembly
Diskette Drive
Fan Assembly
System Board
Dip Switch
Settings
Memory
Module
the previous
procedures.
When
replacing
the
battery
charger
board,
ensure
NOTE:
that the
pins are
aligned
with the
connector
on the
system
board.
Maintenance & Service Guide
Presario 1200 Series
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Removing the Modem
Model: 1245
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Cover with
Touch Pad
To remove
the modem,
complete the
following
steps:
1. Prepare
computer
the
for
disassembly.
2. Remove
the palmrest
cover with
touch pad.
Heatspreader
Keyboard
Processor
Hard Drives
CD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Upper CPU
Cover
Speaker
Assembly
3. Remove
the
heatspreader.
4. Remove
the keyboard.
5. Remove
two screws
securing
modem and
pull the
modem off
the connector
on the
system
board.
Diskette Drive
Fan Assembly
System Board
Dip Switch
Settings
Memory
Module
Next Step
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
6. Disconnect the
modem cable from the
modem.
To replace the modem,
reverse the previous
procedures.
Return to Removal &
Replacement
Procedures
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Removing the Display Panel Assembly
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Cover with
Touch Pad
To remove the display
panel assembly,
complete the
following steps:
Prepare the
1.
computer for
disassembly.
2. Remove the
palmrest cover with
touch pad.
3. Remove the
heatspreader.
Heatspreader
Keyboard
Processor
Hard Drives
CD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Upper CPU
Cover
Speaker
4. Remove the
keyboard.
5. Remove the
modem.
6. Pull up the hinge
covers and lift the
covers off the chassis.
Carefully
remove
the
display
IMPORTANT:
panel
assembly
Assembly
Diskette Drive
Fan Assembly
System Board
Dip Switch
Settings
Memory
Module
hinge
covers.
Next Step
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
7. Disconnect the flex
cable attached to the
display panel assembly
from the ZIF connector
on the system board.
Next Step
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
8. Disconnect the
backlight cable attached
to the display panel
assembly from the
connector on the
system board.
Next Step
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
9. Support the back
of the display panel
assembly and remove
two screws from each
of the display panel
hinges.
Next Step
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
10. Gently pull the flex
cable attached to the
display panel assembly
through the slot on the
Upper CPU cover and
remove the display
panel assembly with
flex and backlight cable
attached.
To replace the display
panel assembly, reverse
the previous
procedures.
When removing
the display panel
assembly,
observe the
NOTE:
display panel
assembly flex
cable routing and
position.
Return to
Removal &
Replacement
Procedures
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Removing the Upper CPU Cover
Electrostatic
Discharge
Service
Considerations
To remove
the Upper
CPU cover
complete the
following
steps:
1. Prepare
computer
the
for
disassembly.
2. Remove
the palmrest
cover with
touch pad.
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Cover with
Touch Pad
Heatspreader
Keyboard
Processor
Hard Drives
3. Remove
the
heatspreader.
4. Remove
the keyboard.
5. Remove
the hard
drive.
6. Remove
the display
panel
assembly.
CD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Upper CPU
Cover
Speaker
Assembly
Diskette Drive
Fan Assembly
System Board
Dip Switch
Settings
7. Remove
the screw
located under
the bottom of
the unit
(rear) which
secures the
Upper CPU
cover to the
chassis and
remove four
screws
located on
the top.
8. Lift the
Upper CPU
cover off the
snaps on the
Memory
Module
chassis. This
disconnects
the power
switch from
the connector
on the
system
board.
To replace
the Upper
CPU cover,
reverse the
previous
procedures.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Removing the Speaker Assembly
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
To remove
the speaker
assembly,
complete the
following
steps:
1. Prepare
computer
the
for
disassembly.
2. Remove
the palmrest
cover with
touch pad.
Computer for
Disassembly
Battery Pack
Palmrest
Cover with
Touch Pad
Heatspreader
Keyboard
Processor
Hard Drives
CD Drive
Battery
Charger Board
3. Remove
the
heatspreader.
4. Remove
the keyboard.
5. Remove
the hard
drive.
6. Remove
the display
panel
assembly.
Modem
Display Panel
Assembly
Upper CPU
Cover
Speaker
Assembly
Diskette Drive
Fan Assembly
System Board
Dip Switch
Settings
Memory
7. Remove
the Upper
CPU cover.
8. Remove
the battery
charger
board.
9. Disconnect
the speaker
cables from
the system
board and
remove the
speaker
Module
assembly
from the
chassis.
To replace
the speaker
assembly,
reverse the
previous
procedures.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Removing the Diskette Drive
Electrostatic
Discharge
Service
Consideration
Cables and
Connectors
Preparing the
Computer for
Disassembly
To remove the
diskette drive,
complete the
following steps:
Prepare the
1.
computer for
disassembly.
2. Remove the
palmrest cover
with touch pad.
3. Remove the
heatspreader.
Battery Pack
Palmrest
Cover with
Touch Pad
Heatspreader
Keyboard
Processor
Hard Drives
CD Drive
Battery
Charger
Board
Modem
Display Panel
4. Remove the
keyboard.
5. Remove the
hard drive.
6. Remove the
display panel
assembly.
7. Remove the
Upper CPU
cover.
8. Remove
battery charger
board.
Assembly
Upper CPU
Cover
Speaker
Assembly
Diskette
Drive
Fan Assembly
System
Board
Dip Switch
Settings
Memory
Module
9. Remove the
diskette drive.
Next Step
When
replacing
the
diskette
drive,
ensure
that the
diskette
NOTE:
drive
eject
lever is
properly
inserted
in the
chassis
slot.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
10. Disconnect the
diskette drive data
cable from the system
board.
To replace the diskette
drive, reverse the
previous procedures.
Return to Removal &
Replacement
Procedures
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Removing the Fan Assembly
To remove
the fan
assembly,
complete the
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Cover with
Touch Pad
Heatspreader
following
steps:
1. Prepare
computer
the
for
disassembly.
2. Remove
the palmrest
cover with
touch pad.
3. Remove
the
heatspreader.
Keyboard
Processor
Hard Drives
CD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Upper CPU
Cover
Speaker
Assembly
4. Remove
the keyboard.
5. Remove
the display
panel
assembly.
6. Remove
the hard
drive.
7. Remove
the Upper
CPU cover.
Diskette Drive
Fan Assembly
System Board
Dip Switch
Settings
Memory
Module
8. Lift the fan
assembly
from the
chassis slot
and
disconnect
the fan cable
from the
connector on
the system
board.
Next Step
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
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To remove the fan gasket, complete the following step:
Pull the gasket from the fan.
To replace the fan assembly, reverse the previous procedure.
When replacing the fan, ensure that the fan is
NOTE:
blowing into the computer. (The vendor label on the
fan should be facing in, toward the processor).
To replace the fan with gasket attached, place the fan
NOTE:
assembly at a 15º angle and push forward.
Return to Removal & Replacement Procedures
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
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Pin Assignments | Battery Pack Operations
Removing the System Board
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Cover with
Touch Pad
Heatspreader
Keyboard
To remove the system board, complete
the following steps:
1. Prepare the
computer for
disassembly.
2. Remove the palmrest cover with
touch pad.
3. Remove the heatspreader.
4. Remove the keyboard.
5. Remove the processor.
Processor
Hard Drives
CD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Upper CPU
Cover
Speaker
Assembly
Diskette Drive
6. Remove the modem.
7. Remove the hard drive.
8. Remove the display panel assembly.
9. Remove the Upper CPU Cover.
10. Remove the battery charger board.
11. Remove the diskette drive.
12. Remove the CD drive.
13. Remove the fan.
Fan Assembly
System Board
Dip Switch
Settings
Memory
Module
14. Disconnect the speaker assembly
cables.
Next Step
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
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15. Remove three
standoffs from the
system board.
Next Step
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
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16. Remove two screws
from the CD Drive
mounting rails and
remove the mounting
rails from the system
board.
Next Step
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
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17. Remove three
screws from the system
board.
Next Step
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
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18. Pull the PCMCIA eject lever out (straight), lift
up the right side of the system board and pull
forward to remove the system board from the
chassis.
To replace the system board, reverse the
previous procedures.
Remove all cables from the system
IMPORTANT:
board.
Dip Switch System Board Settings
Return to Removal & Replacement
Procedures
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
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Pin Assignments | Battery Pack Operations
Removing the Memory Module
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Cover with
Touch Pad
Heatspreader
To remove
the memory
module,
complete
the following
steps:
1. Prepare
the
computer
for
disassembly.
2. Close the
computer
and turn the
computer
Keyboard
Processor
Hard Drives
CD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Upper CPU
Cover
Speaker
upside
down.
3. Remove
the screw
from the
memory
module
door, and
slide the
memory
module door
to the right.
Next Step
Assembly
Diskette Drive
Fan Assembly
System Board
Dip Switch
Settings
Memory
Module
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
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Pin Assignments | Battery Pack Operations
4. Pull side levers to
release the memory
module and unplug the
memory module from
the system board.
To replace the memory
module, reverse the
previous procedures.
Return to Removal &
Replacement
Procedures
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
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Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Specifications
This chapter covers the following specifications for the Model 1245 Portable
Computer:
System interrupts
Memory Expansion
System DMA
Battery Pack
System I/O Address
Diskette Drive
System memory Catalog
Hard Drive
Physical & environmental
CD Drive
Display
Physical and Environmental
Computer Specifications
Dimensions
Height
Depth
Width
Weight
Stand-Alone (Battery Pack) Power
Requirements
U.S. Metric
1.97 in
12.20 in
10.08 in
4.95 cm
31.00 cm
25.60 cm
6.88 lb 3.34 kg
NiMH
Nominal Operating
Maximum Average
Peak Operating
AC Power Requirements
Operating Voltage
Operating Current
Operating Frequency
Maximum Transient
Operating Temperature
Non-operating Temperature
Operating Relative Humidity (non-
condensing)
Non-operating Relative Humidity
W @ 9.6 V
W @ 9.6 V
W @ 9.6 V
100-240 V
0.8/0.4 A RMS
47-63 Hz
Meets IEC 801-4 and IEC801-5
1kV for 50 ns
50° to 95 °F 10° to 35 °C
-4° to 140 °F -20° to 60 °C
10 to 90% 35°C to 90%
5 to 95% 60°C to 95%
(tw = 38.7°C max)
Operating Altitude
Non-operating Altitude
Operating Shock
Non operating Shock
Operating Vibration
Non-operating Vibration
10 G, 11 ms, half sine
240 G, 2 ms, half sine
0 to 10,000 ft 0 to 3.15 km
0 to 30,000 ft 0 to 9.14 km
0.5 G
1.5 G
NOTE: Applicable product safety standards specify thermal limits for plastic surfaces. The
Compaq Presario Model 1245 Portable Computer operates well within this range of
temperatures.
Return to the
Top of this page.
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Specifications
System Interrupts
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
Pin Assignments | Battery Pack Operations
System Interrupts
Hardware
IRQ
IRQ00 Timer Interrupt
IRQ01 Standard 101/102-Key or Microsoft
IRQ02 Programmable interrupt controller
IRQ03 Compaq Presario 56K-DF
IRQ04 Communications Port (COM1)
IRQ05 ES1869 Plug and Play AudioDrive
IRQ06 Standard Floppy Disk Controller
IRQ07 Printer Port (LPT1)
IRQ08 System CMOS/real time clock
IRQ09 (free)
System Function
Natural Keyboard
IRQ10 OPTi 82C861 PCI to USB Open Host
Controller
IRQ11 IRQ Holder for PCI Steering
IRQ11 NeoMagic MagicGraph 128XD
IRQ12 Synaptics PS/2 TouchPad
IRQ13 Numeric data processor
IRQ14 Primary IDE controller (dual fifo)
IRQ14 Opti Viper Max Dual PCI IDE Controller
IRQ15 Secondary IDE controller (dual fifo)
IRQ15 Opti Viper Max Dual PCI IDE Controller
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Specifications.
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Specifications
System DMA
Hardware DMA System Function
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
Pin Assignments | Battery Pack Operations
System DMA
0
1
2
3
4
5
6
7
ES1869 Plug and Play AudioDrive
ES1869 Plug and Play AudioDrive
Standard Floppy Disk Controller
(free)
Direct memory access controller
(free)
(free)
(free)
Return to the index list of Specifications.
Maintenance & Service Guide
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Pin Assignments | Battery Pack Operations
Specifications
System I/O Address
Presario 1200 Series
Model: 1245
System I/O Address
I/O Address (Hex)
System Function (Shipping
Configuration)
Direct memory access
0000H - 000FH
controller
Programmable interrupt
0020H - 0021H
controller
0022H - 0024H Motherboard resources
0040H - 0043H System timer
Standard 101/102-Key or
0060H - 0060H
Microsoft Natural Keyboard
0061H - 0061H System speaker
Standard 101/102-Key or
0064H - 0064H
Microsoft Natural Keyboard
0070H - 0071H System CMOS/real time clock
0080H - 0080H Motherboard resources
Direct memory access
0081H - 008FH
controller
0092H - 0092H Motherboard resources
Programmable interrupt
00A0H - 00A1H
controller
Direct memory access
00C0H - 00DFH
controller
00ECH - 00EFH Motherboard resources
00F0H - 00FFH Numeric data processor
Opti Viper Max Dual PCI IDE
0170H - 0177H
Controller
Secondary IDE controller (dual
0170H - 0177H
fifo)
01F0H - 01F7H
Opti Viper Max Dual PCI IDE
Controller
Primary IDE controller (dual
01F0H - 01F7H
fifo)
ES1869 Plug and Play
0220H - 022FH
AudioDrive
02F8H - 02FFH Compaq Presario 56K-DF
ES1869 Plug and Play
0330H - 0331H
AudioDrive
0370H - 0371H Motherboard resources
Opti Viper Max Dual PCI IDE
0376H - 0376H
Controller
Secondary IDE controller (dual
0376H - 0376H
fifo)
0378H - 037FH Printer Port (LPT1)
ES1869 Plug and Play
0388H - 038BH
AudioDrive
03B0H - 03BBH NeoMagic MagicGraph 128XD
03C0H - 03DFH NeoMagic MagicGraph 128XD
Standard Floppy Disk
03F0H - 03F5H
Controller
Opti Viper Max Dual PCI IDE
03F6H - 03F6H
Controller
Primary IDE controller (dual
03F6H - 03F6H
fifo)
Standard Floppy Disk
03F7H - 03F7H
Controller
03F8H - 03FFH Communications Port (COM1)
040BH - 040BH Motherboard resources
0480H - 048FH Motherboard resources
04D6H - 04D6H Motherboard resources
0800H - 0807H ES1869 Control Interface
0CF8H - 0CFFH PCI bus
Primary IDE Controller (dual
FCF0H - FCF7H
fifo)
Opti Viper Max Dual PCI IDE
FCF0H - FCFFH
Controller
Secondary IDE Controller
FCF8H - FCFFH
(dual fifo)
Return to the index list of Specifications.
Maintenance & Service Guide
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Pin Assignments | Battery Pack Operations
Specifications
System Memory Catalog
Presario 1200 Series
Model: 1245
System Memory Catalog
Memory Address System Function
00000000H - 00000000H Texas Instruments PCI-1131 Card
Bus Controller
00000000H - 0009FFFFH System board extension for PnP
BIOS
000A0000H - 000AFFFFH NeoMagic MagicGraph 128XD
000B0000H - 000BFFFFH NeoMagic MagicGraph 128XD
000C0000H - 000CBFFFH NeoMagic MagicGraph 128XD
000E0000H - 000FFFFFH System board extension for PnP
BIOS
00100000H - 01FFFFFFH System board extension for PnP
BIOS
FD000000H - FDFFFFFFH NeoMagic MagicGraph 128XD
FEA00000H - FEBFFFFFH NeoMagic MagicGraph 128XD
FECFF000H - FECFFFFFH OPTi 82C861 PCI to USB Open Host
Controller
FED00000H - FEDFFFFFH NeoMagic MagicGraph 128XD
FFFC0000H - FFFFFFFFH Motherboard resources
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Specifications.
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Specifications
Display
Maintenance & Service Guide
Presario 1200 Series
Models: 1245
Pin Assignments | Battery Pack Operations
12.1" (Diagonal) HPA Display
Active Area
Height
Width
Overall
Dimensions
Width
Height
Depth
Weight
Contrast Ratio
U.S. Metric
9.56"
7.17"
7.9"
10.7"
.31"
18.2 oz. 520 g
40:1 40:1
245 mm
183.8 mm
202.5 mm
275.0 mm
8.0 mm
Brightness
Total Power
Consumption
70 nits. Avg. 70 nits. Avg.
4.0 - 4.5 W (max) 4.0 - 4.5 W (max)
Return to the index list of
Specifications.
Maintenance & Service Guide
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Pin Assignments | Battery Pack Operations
Specifications
Memory Expansion
System Memory Expansion Board Memory Total Memory
Presario 1200 Series
Model: 1245
Memory Expansion
32-MB 16-MB 48-MB
32-MB 32-MB 64-MB
32-MB 64-MB 96-MB
32-MB 128-MB 160-MB
Return to the index list of Specifications.
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Specifications
Battery Pack
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
Pin Assignments | Battery Pack Operations
Nickel Metal Hydride (NiMH)
Dimensions
Height
Length
Width
Weight
Energy
Nominal Open Circuit Voltage
Capacity
Power
Battery Pack
0.8 in (20.3 mm)
5.7 in (145 mm)
3.1 in (78.7 mm)
1.01 lb (458.1 g)
9.6 V
3.8 Ah
36.5 Wh
Environmental Requirements
Operating Temperature
Non-operating Temperature
Charging Temperature
Return to the index list of
32° F (0-50° C)
-20° C -60° C
5° C-45° C
Specifications
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Specifications
Diskette Drive
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
Pin Assignments | Battery Pack Operations
Diskette Drive
Capacity per Diskette
(High/Low)
Diskette Size
Number of LED Indicators
(Read/Write)
Number of Drives Supported
Drive Rotation (rpm)
Transfer Rate (Kbps)
Bytes per Sector
Sectors per Track (High/Low)
Tracks per Disk (High/Low)
Access Times:
1,474 KB / 738 KB
2HD / 2DD
NONE
ONE
300
500 / 250
512
18 / 9
160
Track-to-Track (ms)
Average (ms)
Setting Time (ms)
Latency Average (ms)
Cylinders (High/Low)
Number of Read/Write Heads
Return to the index list of
3
94
15 (Max)
100
80
2
Specifications.
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Specifications
Hard Drives
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
Pin Assignments | Battery Pack Operations
Hard Drives
3.2-GB
Capacity Per Drive (Formatted)
Drive Type
Logical Configuration
Cylinders
Heads
Sectors per track
Bytes per sector
3.2 GB
2.5"
7470
4
---
512
Seek Times
(Typical, Including settling in ms)
Single track
Average
Full stroke
Transfer Rate
At interface
---
12
---
33.3 MB/S
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Specifications.
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Specifications
CD Drive
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
Pin Assignments | Battery Pack Operations
24× CD Drive
Dimensions
Weight
Rotational Speed
Typical Transfer Rate
Sustained Data Transfer Rate
Access Time
Average Random Access Time
Spin Up time
Data Buffer Capacity
Return to the index list of
128 x 12.7 x 129 mm
0.5 lbs
5120 rpm
3600 KB/s
110 ms
2.7 s
128 KB
Specifications.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
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Pin Assignments | Battery Pack Operations
Connector Pin Assignments
This appendix provides connector pin assignment tables for Compaq Presario 1200
Series Portable Computers. For more information on connectors, refer to the section
on Rear Connectors.
NOTE: The signals in all tables of this appendix are considered active high unless
otherwise indicated by an asterisk (*).
Click on a link:
● Parallel Connector
● Serial Connector
● Keyboard/Mouse
● External VGA Monitor
● Universal Serial Bus
● Modem
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
Return
to the top.
Serial Connector
Connector Pin Signal
1
2
3
4
5
6
7
8
Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Ready to Send
Clear to Send
9
Ring Indicator
Return
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Keyboard/Mouse
Connector Pin Signal
1
2
3
4
Data 1
Data 2
Ground
+5 V
5
6
Return
to the top.
Clock 1
Clock 2
External VGA Monitor
Connector Pin Signal
1
2
3
Red Analog
Green Analog
Blue Analog
4
5
6
7
8
9
10
11
Not connected
Ground
Ground Analog
Ground Analog
Ground Analog
Not connected
Ground
Monitor Detect
12
13
14
15
Return
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DDC2B Data
Horizontal Sync
Vertical Sync
DDC2B Clock
Universal Serial Bus
Connector Pin Signal
1
+5V
2
3
Data Data +
Ground
4
Return
to the top.
Modem
Connector Pin Signal
1
2
Unused
Unused
3
4
5
6
Tip
Ring
Unused
Unused
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
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Pin Assignments | Battery Pack Operations
Battery Pack Operating Time
This appendix covers the following information concerning battery pack operating time:
● Increasing battery pack operating time
● Conditioning a battery pack
● Disposing of a used battery pack
Increasing Battery Pack Operating Time
Battery pack operating time differs depending on several variables. To avoid
unnecessary replacement, consider the following variables when determining how long a
charged battery pack should last:
● Power management settings
● Hardware configuration
● Software applications
● Installed options
● Display brightness
● Hard drive usage
● Changes in operating temperature
● Type and number of installed PC Cards
NOTE:
The power consumption requirements for PC Cards vary widely. Some cards drain
the battery pack very rapidly.
Battery pack operating time can be increased by as much as 50 percent by controlling the energy
required by the computer and the energy stored in the battery pack.
Minimizing the Energy Required
To minimize the energy required by the computer, follow these steps:
1. Set the power conservation levels in the Power Management utility to Maximum.
2. Customize the timeout value to work more efficiently with the applications. The amount of
battery life depends on the values selected.
Maximizing the Energy Stored
To maximize the energy stored in the battery pack, follow these guidelines:
● Condition the battery pack at least every 30 days to improve overall battery performance.
● Keep a battery pack in the computer when using it with AC power to supply the battery pack
with a constant trickle charge.
● Store the battery pack in a cool, dry place when not in use.
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Conditioning a Battery Pack
CAUTION: To avoid a loss of data, ensure that all data is saved before discharging a
battery pack.
To condition a battery pack, complete the following steps:
1. Plug in the AC adapter and allow the battery to charge until the LED light on the
display stops blinking. Your battery gauge may read 100 percent for a period of time
before LED light on the display stops blinking. Do not unplug the AC adapter until the
arrow disappears.
2. Unplug the AC adapter and allow the battery to drain until the computer reaches
hibernation and turns itself off. Do not plug in the AC adapter during this process
or you will need to restart with Step No. 1. You may use the computer while the
battery is draining.
3. Your battery is re-conditioned.
4. Plug in the AC adapter and begin using the computer.
The table below shows the approximate battery pack charge times.
Approximate Battery Charge Time
Computer On Line Off Line
NiMH Battery Pack 4.0 hours 2:00 hrs
Disposing of a Used Battery Pack
In the interest of safeguarding our environment, Compaq Computer Corporation recommends that
nickel metal hydride (NiMH) battery packs be recycled. Battery packs should be handled in
accordance with country, state, province, or local regulations.
CAUTION: Never attempt to open or service a battery pack. Opening a battery pack
not only damages the pack and makes it unusable, but also exposes potentially harmful
battery components.
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Maintenance & Service Guide
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Pin Assignments | Battery Pack Operations
Troubleshooting
Presario 1200 Series
Model: 1245
Preliminary Steps
Clearing the Power-On
Password
Power-On Self Test
(POST)
Compaq Diagnostics
Diagnostic Error Codes
Troubleshooting
Without Diagnostics
Solving Minor
Problems
Contacting Compaq
Support
This section covers troubleshooting information
for the Compaq Presario Model 1245 Portable
Computer. The basic steps in troubleshooting
include:
1. Follow the
Preliminary
Steps.
2. Run the Power-On Self-Test
(POST).
3. If you are unable to run
POST or if POST displays an
error message, follow the
recommended actions
described in the diagnostic
tables.
When following the recommended
actions in the Sections on POST
and
Diagnostic Error Codes,
perform them in the order listed.
Rerun POST after each
recommended action until the
problem is solved and no error
message occurs. Once the
problem is solved, do not
complete the remaining
recommended actions.
NOTE:
If the problem is
intermittent, check the
computer several times to
verify that the problem is
solved.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
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Preliminary Steps
Before running POST, complete the following preliminary steps:
1. If a power-on password has been established, type the password and press the Enter key.
If the password is not known,
clear the password.
2. Run Computer Checkup.
3. Turn off the computer and its external devices.
4. Disconnect any external devices that you do not want to test. Do not disconnect the printer
if you want to test it or use it to log error messages.
If the problem only occurs when an external device is connected to the computer, the
IMPORTANT:
problem may be related to the external device or its cable. Verify this by running POST
with and without the external device connected.
5. Install loopback plugs in the serial and parallel connectors if you would like to test these ports.
6. Ensure that the hard drive is installed in the computer.
7. Ensure that the battery pack is inserted in the computer and the computer is connected
to an external AC power source.
When these preliminary steps are completed, you are ready to run
Return to Troubleshooting index page.
POST.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
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Pin Assignments | Battery Pack Operations
Power-On Self Test (POST)
Running POST
To run POST, complete the following steps:
● Turn off the computer; then, turn on the computer.
● If POST does not detect any errors, the computer will not beep. This indicates successful
completion of POST test. POST has run successfully and boots from the hard drive (or from a
bootable diskette if one is installed in the diskette drive).
● If POST detects errors, the errors are indicated by screen and/or audible messages.
Refer to "Power-On Self-Test (POST) Codes" in the tables for a list of POST codes and their relevant
descriptions.
If the system is not functioning well enough to run POST, or if the display is
NOTE:
not functioning well enough to show POST error messages, refer to the
Troubleshooting tables.
Power-On Self-Test Messages
102-System Board Failure
Probable Cause Recommended Action
DMA, timers, etc. Replace the system board.
162-System Options Not Set
Probable Cause Recommended Action
Configuration incorrect Run Computer Setup.
CMOS reflects that an invalid
configuration has been set.
RAM failure 1. Replace the memory modules.
Memory test data error 1. Replace the memory modules.
Run Computer Setup.
2. Replace the system board.
2. Replace the system board.
XX000YZZ RAM failure Replace the system board.
XX000YZZ 201-Memory Error
Probable Cause Recommended Action
RAM failure 1. Replace the memory modules.
2. Replace the system board.
Memory test data error 1. Replace the memory modules.
2. Replace the system board.
XXOOOYZZ Ram failure Replace the system board.
301-Keyboard Error
Probable Cause Recommended Action
Keyboard failure 1. Ensure that keys are not depressed
during POST.
2. Reconnect the keyboard with the
computer off.
3. Replace the keyboard.
304-Keyboard or System Unit Error
Probable Cause Recommended Action
Keyboard or system board error 1. Replace the keyboard.
2. Replace the TouchPad or mouse.
3. Replace the system board.
601-Diskette Controller Error
Probable Cause Recommended Action
Mismatch in drive type or failure in the
diskette controller
Run Computer Checkup (TEST).
1.
2. Check and/or replace cables.
3. Replace the system board.
605-Diskette Drive Error
Probable Cause Recommended Action
Mismatch in drive type Run Computer Setup.
1780-Primary Hard Drive 0 Failure
Probable Cause Recommended Action
Disk 0 failed to respond 1.
Hard drive format error 1. Run Computer Checkup (TEST).
Run Computer Checkup (TEST).
2. Replace the hard drive.
2. Replace the hard drive.
1782-Hard Drive Controller
Probable Cause Recommended Action
Hard drive controller failure 1. Run Computer Setup.
2. Replace the hard drive.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Compaq Diagnostics
Compaq Diagnostics is installed on the hard drive of the computer. Run the
Diagnostics utilities when you want to view or test system information and if you
have installed or connected devices. If you run Compaq Diagnostics from a diskette,
ensure that it is version 10.11 or later.
The Diagnostics menu includes the following utilities:
■ Perform Computer Checkup (TEST)
■ View System Information (INSPECT)
■ Prepare Computer for a Compaq Service Call (RemotePaq)
If you have a problem you cannot solve, run the Diagnostics utilities before you call
for support. Run Computer Checkup and save the device list to a file and to print, or
save the error log. Run the View System Information (INSPECT) utility and print or
save that information. Have the files or the printed information available when you
call for support.
Perform Computer Checkup (TEST)
Computer Checkup (TEST) determines whether the various computer components
and devices are recognized by the system and are functioning properly. You can
display, print, or save the information generated by Computer Checkup.
Follow these steps to run Computer Checkup:
1. Plug the computer into an external power source. (A low battery condition could
interrupt the program.)
2. Turn on the external devices that you want to test. Connect the printer if you want
to print a log of error messages.
3. Insert the Compaq Diagnostics diskette in drive A.
4. Turn on or restart the computer. The computer starts from drive A, and the
Diagnostics Welcome screen appears.
5. Press Enter to continue. The Diagnostics menu appears.
6. Select Computer Checkup from the Diagnostics menu. A Test Option menu
appears.
7. Select View the Device List from the Test Option menu. A list of the installed
Compaq devices appears.
8. If the list of installed devices is correct, select OK. The Test Option menu
appears.
NOTE:
If the list is incorrect, ensure that any new devices are installed properly.
9. Select one of the following from the Test Option menu:
■ Quick Check Diagnostics. Runs a quick, general test on each device with a
minimal number of prompts. If errors occur, they display when the testing is
complete. You cannot print or save the error messages.
■ Automatic Diagnostics. Runs unattended, maximum testing of each device with
minimal prompts. You can choose how many times to run the tests, to stop on
errors, or to print or save a log of errors.
■ Prompted Diagnostics. Allows maximum control over testing the devices. You
can choose attended or unattended testing, decide to stop on errors, or choose
to print or save a log of errors.
10. Follow the instructions on the screen as the devices are tested. When testing is
complete, the Test Option menu appears.
11. Exit the Test Option menu.
12. Exit the Diagnostics menu.
Return to
top of this page
View System Information (INSPECT)
The View System Information (INSPECT) utility provides information about the
computer and installed or connected devices. You can display, print, or save the
information.
Follow these steps to run View System Information (INSPECT) from the Compaq
Diagnostics diskette:
1. Turn on the external devices that you want to test. Connect the printer if you want
to print the information.
2. Insert the Compaq Diagnostics diskette in drive A.
3. Turn on or restart the computer. The computer starts from drive A, and the
Diagnostics Welcome screen appears.
4. Press Enter to continue. The Diagnostics menu appears.
5. Select View System Information (INSPECT) from the Diagnostics menu.
6. Select the item you want to view from the following list:
System Memory
ROM Audio
Keyboard Operating system
System ports System files
System storage Windows files
Graphics
7. Follow the instructions on the screen to cycle through the screens, to return to the
list and choose another item, or to print the information.
Return to
top of this page
or to Preliminary steps page.
or to the Troubleshooting index page.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Contacting Compaq Support
Obtain the following information before contacting Compaq Reseller Support:
● Product name
● Product serial number
● Purchase date
● Conditions under which the problem occurred
● Any error messages that have occurred
● Hardware configuration
● Type of printer connected
● Hardware/software being used
● Printed result of Computer Checkup (TEST)
● Printed copies of CONFIG.SYS and AUTOEXEC.BAT files, if possible
Shipping Preparation
To ship the computer, complete the following steps:
1. Back up the critical hard drive files. Ensure that backup tapes/diskette are
not exposed to electrical or magnetic fields while stored in transit.
2. Turn off the computer and external devices.
3. Disconnect the external devices from their power sources, then from the
computer.
Ensure that there is no diskette in the diskette drive, no PC
IMPORTANT:
Cards in the PC slots, and no CD in the CD-ROM drive.
4. Close the display and all exterior doors of the computer.
5. Pack the computer with sufficient packing material to protect it. Use the
original packing box or similar packaging.
Return to
Compaq Diagnostics page or Troubleshooting Index page.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Clearing the Power-on Password
Clearing the power-on password requires
removing all Setup attributes that are
programmed in the CMOS. The RTC battery is
located on the system board.
If the password is not known, clear it by
performing the following steps:
1. Turn off the computer.
2. Disconnect the power cord.
3. Remove the
battery pack.
4. Remove the Palmrest Cover with Touch Pad.
5. Move the keyboard to allow access to the
heatspreader.
6. Remove the heatspreader.
7. Remove the modem.
8. Remove the RTC battery for 30 seconds and
replace it.
9. Reassemble the computer by reversing the
previous steps.
10. Turn on the computer to verify that the poweron password has been cleared. If it has not been
cleared, repeat Steps 1 through 10.
Return to
preliminary steps page.
or
Return to Troubleshooting index page.
Maintenance & Service Guide
Presario 1200 Series
Models: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Diagnostic Error Codes
Diagnostic error codes occur if the system recognizes a problem while running the Compaq
Diagnostic program. These error codes help identify possibly defective subassemblies.
The following tables list error codes, a description of the error condition, and the action required
to resolve the error condition.
IMPORTANT:
For the removal and replacement of a particular subassembly, see
Procedures.
Select error codes by number or type:
Retest the system after completing each step. If the problem has been resolved,
do not proceed with the remaining steps.
Removal and Replacement
101 through 114
200 through 215 Processor Test
300 through 304 Memory Test
401 through 403 Keyboard Test
600 through 699 Parallel Printer Test
1101 Diskette Drive Test
1701 through 1736 Serial Test
501 through 516 Hard Drive Test
2402 through 2456 Video Test
2458 through 2480 Audio Test
3206 Touch Pad Pointing Device Test
8601 through 8602 CD Test
3301 through 6623
Processor Test Error Codes
Error
Code Description Recommended Action
101-xx CPU test failed Replace the processor and retest.
102-xx Coprocessor or Weitek Error 1. Run the Configuration and Diagnostics
Utilities.
2. Replace the processor board and retest.
103-xx DMA page registers test failed Replace the system board and retest.
104-xx Interrupt controller master test failed
105-xx Port 61 error
106-xx Keyboard controller self-test failed
107-xx CMOS RAM test failed
108-xx CMOS interrupt test failed
109-xx CMOS clock test failed
110-xx Programmable timer load data test failed
113-xx Protected mode test failed
114-01 Speaker test failed 1. Check system configuration.
2. Verify cable connections to speaker.
3. Replace the system board and retest.
Memory Test Error Codes
200-xx Memory machine ID test failed 1. Flash the system ROM and retest.
202-xx Memory system ROM checksum failed
203-xx Write/Read test failed 1. Remove the memory module and retest.
204-xx Address test failed
211-xx Random pattern test failed
214-xx Noise test failed
215-xx Random address test failed
2. Replace the system board and retest.
2. Install a new memory module and
retest.
Return to the top
Keyboard Test Error Codes
300-xx Failed ID Test 1. Check the keyboard connection. If
disconnected, turn off the computer and
301-xx Failed Selftest/Interface Test
connect the keyboard.
302-xx Failed Individual Key Test
304-xx Failed Keyboard Repeat Test
Parallel Printer Test Error Codes
401-xx Printer failed or not connected 1. Connect the printer.
402-xx Failed Port Test
403-xx Printer pattern test failed
2. Replace the keyboard and retest.
3. Replace the system board and retest.
2. Check power to the printer.
3. Install the loop-back connector and
retest.
4. Check port and IRQ configuration.
5. Replace the system board and retest.
Return to the top.
600-xx
601-xx
602-xx
603-xx
604-xx
605-xx
606-xx
609-xx
610-xx
697-xx
698-xx
Diskette Drive Test
Diskette ID drive types test
failed
Diskette format failed
Diskette read test failed
Diskette write, read, compare test failed
Diskette random read test failed
Diskette ID media failed
Diskette speed test failed
Diskette reset controller test failed
Diskette change line test failed
Diskette type error
Diskette drive speed not within limits
Diskette drive/media ID error 1. Replace media.
1. Replace the diskette media and retest.
2. Check and/or replace the diskette power
and signal cables and retest.
3. Replace the diskette drive and retest.
4. Replace the system board and retest.
699-xx
2. Run the Configuration and Diagnostics
Utilities.
Return to the top.
Serial Test Error Codes
1101-
xx
1701-xxHard drive format test failed 1. Run the Configuration and Diagnostics
1702-xxHard drive read test failed
1703-xxHard drive write/read/compare test failed
Serial port test failed 1. Check port configuration.
2. Replace the system board and retest.
Hard Drive Test Error Codes
Utilities and verify drive type.
2. Verify that all secondary drives have
secondary drive capability.
1704-xxHard drive random seek test failed
1705-xxHard drive controller test failed
1706-xxHard drive ready test failed
1707-xxHard drive recalibration test failed
1708-xxHard drive format bad track test failed
1709-xxHard drive reset controller test failed
1710-xxHard drive park head test failed
1715-xxHard drive head select test failed
1716-xxHard drive conditional format test failed
3. Replace the hard drive and retest.
4. Replace the system board and retest.
1717-xxHard drive ECC* test failed
1719-xxHard drive power mode test failed
1724-xxNetwork preparation test failed
1736-xxDrive monitoring test failed
* ECC = Error Correction Code
Return to the top.
Video Test Error Codes
501-xx Video controller test failed The following apply to error codes 501-xx
502-xx Video memory test failed
503-xx Video attribute test failed
504-xx Video character set test failed
through 516-xx:
1. Disconnect external monitor and test
with internal LCD display.
505-xx
506-xx
507-xx Video 40 × 25 mode test failed
508-xx
509-xx
510-xx Video 640 × 200 mode test failed
511-xx Video screen memory page test failed
512-xx Video gray scale test failed
514-xx Video white screen test failed
516-xx Video noise pattern test failed
2402-xxVideo memory test failed The following steps apply to error codes
Video 80 × 25 mode 9 × 14 character cell
test failed
Video 80 × 25 mode 8 × 8 character cell
test failed
Video 320 × 200 mode color set 0 test
failed
Video 320 × 200 mode color set 1 test
failed
2. Replace the display assembly and retest.
3. Replace the system board and retest.
2402-xx through 2456-xx:
2403-xxVideo attribute test failed
2404-xxVideo character set test failed
2405-xxVideo 80 × 25 mode 9 × 14 character cell
test failed
2406-xxVideo 80 × 25 mode 8 × 8 character cell
test failed
2408-xxVideo 320 × 200 mode color set 0 test
failed
2409-xxVideo 320 × 200 mode color set 1 test
failed
2410-xxVideo 640 × 200 mode test failed
2411-xxVideo screen memory page test failed
2412-xxVideo gray scale test failed
1. Run the Configuration and Diagnostics
Utilities.
2. Replace the display assembly and retest.
3. Replace the system board and retest.
2414-xxVideo white screen test failed
2416-xxVideo noise pattern test failed
2418-xxECG/VGC memory test failed
2419-xxECG/VGC ROM checksum test failed 1. Run the Configuration and Diagnostics
Utilities.
2421-xxECG/VGC 640 × 200 graphics mode test
failed
2422-xxECG/VGC 640 × 350 16 color set test
failed
2423-xxECG/VGC 640 × 350 64 color set test
failed
2424-xxECG/VGC monochrome text mode test
failed
2425-xxECG/VGC monochrome graphics mode test
failed
2. Disconnect external monitor and test
with internal LCD display.
3. Replace the display assembly and retest.
4. Replace the system board and retest.
2431-xx640 × 480 graphics test failure
2432-xx320 × 200 graphics (256 color mode) test
failure
2448-xxAdvanced VGA Controller test failed
2451-xx132-column Advanced VGA test failed
2456-xxAdvanced VGA 256 Color
test failed
2458-xxAdvanced VGA BitBLT test The following step applies to error codes
2458-xx through 2480-xx:
2468-xxAdvanced VGA DAC test
Replace the system board and retest.
2477-xxAdvanced VGA data path test
2478-xxAdvanced VGA BitBLT test
2480-xxAdvanced VGA LineDraw test
Return to the top.
Audio Test Error Codes
3206-xxAudio System Internal Error Replace the system board and retest.
TouchPad/Pointing Device Interface Test Error Codes
8601-xxMouse test failed 1. Replace the TouchPad and retest.
8602-xxInterface test failed
CD Drive Test Error Codes
2. Replace the system board and retest.
3301-xxCD drive read test failed 1. Replace the CD and retest.
3305-xxCD drive seek test failed
6600-xxID test failed
6605-xxRead test failed
6608-xxController test failed
6623-xxRandom read test failed
2. Verify that the speakers are connected.
3. Verify that drivers are loaded and
properly installed.
4. Replace the CD drive and retest.
5. Replace the system board and retest.
Return to the top.
or return to the Troubleshooting index page.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Troubleshooting Without Diagnostics
This section provides information about how to identify and correct some common hardware, memory, and software
problems. It also explains several types of common messages that may be displayed on the screen. The following pages
contain troubleshooting information on:
Audio Memory
Battery/Battery gauge PC Card
CD drive Power
Diskette/Diskette drive Printer
Display Touch Pad
Hard drive Keyboard/Numeric keypad
Hardware Installation
Since symptoms can be similar, carefully match the symptoms of the computer malfunction against the problem description
in the Troubleshooting tables to avoid a misdiagnosis.
WARNING: To avoid a potential shock hazard during troubleshooting procedures, disconnect all power
sources before removing the keyboard cover or the display bezel.
Before Replacing Parts
Verify that cables are connected properly to the suspected defective parts.
■ Run Computer Setup after connecting external devices.
■ Verify that all required device drivers are installed.
■ Verify that all required changes have been made to the CONFIG.SYS file.
■ Verify that all required changes have been made to the AUTOEXEC.BAT file.
■ Verify that all printer drivers have been installed for each application.
Return to the
Troubleshooting index page.
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Solving Minor Problems
Some minor problems and possible solutions are outlined in the following tables. If the problem
appears related to a software application, check the documentation provided with the software.
The following problems and possible solutions are addressed:
● Audio Problems
● Battery Pack and Battery Gauge Problems
● CD Drive Problems
● Diskette and Diskette Drive Problems
● Display Problems
● Hard Drive Problems
● Hardware Installation Problems
● Keyboard/Numeric Keypad Problems
● Memory Problems
Solving Audio Problems
Some common audio problems and solutions are listed in the following table.
Solving Audio Problems
Problem Probable Cause Solution(s)
Computer does not beep after the Power-On
Self-Test (POST).
This is typical; it indicates successful
completion of the Power-On Self-Test
(POST).
No action is required.
Solving Battery Pack and Battery Gauge Problems
Some common causes and solutions for battery pack problems are listed in the following table.
The "Solving Power Problems" section in this chapter may also be applicable.
Solving Battery Pack and Battery Gauge Problems
Problem Probable Cause Solution(s)
Computer won't turn on when battery
pack is inserted and power cord is
unplugged.
Battery pack is discharged. Connect the computer to an external
power source and charge the battery
pack.
Replace the battery pack with a fully
charged battery pack.
Check the battery connectors on the
system board to verify that they are
evenly spaced and are not bent or
broken.
Computer is beeping and battery LED
icon is blinking.
Computer battery LED icon (front on
the unit) blinks to indicate low battery
condition, but computer does not beep.
Battery LED icon doesn't light and
battery pack won't fast charge.
Battery charge is low. Immediately save any open file(s).
Then do any one of the following:
● Connect the computer to an
external power source to charge
the battery pack.
● Turn off the computer or initiate
Hibernation until you can find
another power source or charge
the battery pack.
Volume is turned down too low. Adjust the volume.
Battery pack is already charged. No action is necessary.
Battery pack was exposed to
temperature extremes.
Allow time for the battery pack to
return to room temperature.
You have to set the date and time every
time you turn on the computer.
Battery charge does not last as long as
expected.
Battery pack is warm to the touch after
charging.
Battery pack is at end of its life. Replace battery pack.
RTC battery is dead. Replace the RTC battery.
Battery is being exposed to high
temperatures or extremely cold
temperatures.
Battery has partially self-discharged. Recharge the battery. Discharge the
Power management is disabled. Set a power management level in
An external device or PC Card is
draining the battery.
Normal warming has occurred due to
charging.
Keep the battery pack within the
recommended operating temperature
range 50° F to 104° F (10° C to 40° C)
or recommended storage range -4° F to
86° F
(-20° C to 30° C ). Recharge the
battery pack.
battery completely and then recharge
it.
Computer Setup.
Turn off or disconnect external devices
when not using them.
No action is required.
Battery pack operating time is far less
than the documented average operating
time.
Power management is turned off or
disabled.
An external device or PC Card is
draining the battery.
Battery pack has partially selfdischarged.
Battery pack is being exposed to high
temperatures or extremely cold
temperatures.
Enable power management in Computer
Setup and in Windows Power
Properties.
Turn off or disconnect external devices
when not using them.
Condition the battery pack by fully
charging, fully discharging, then fully
recharging it.
To maintain the charge, leave battery
packs in the computer when it is
connected to external power.
If the computer is disconnected from
external power for more than two
weeks, remove battery packs from the
computer to reduce the discharge rate.
Keep the battery pack within the
recommended temperature ranges.
Operating: 50° F to 104° F
(10° C to 40° C)
Storage: -4° F to 86° F
(-20° C to 30° C )
Recharge the battery pack.
Solving CD Drive Problems
Some common causes and solutions for CD drive problems are listed in the following table.
Solving CD Drive Problems
Problem Probable Cause Solution(s)
CD drive cannot read a compact disc. Compact disc is upside down or is
improperly inserted in the CD drive.
CD is CD Plus or Pregap/Track 0 type. Cannot read these type CDs in 24x.
Open the CD loading tray, lay the
compact disc in it (label side up), then
close the tray.
Remove the CD.
Solving Diskette and Diskette Drive Problems
Some common causes and solutions for diskette and diskette drive problems are listed in the
following table.
Solving Diskette and Diskette Drive Problems
Problem Probable Cause Solution(s)
Diskette drive cannot write to a
diskette.
Diskette is write-protected. Disable the diskette's write-
protect feature or use a
diskette that is not writeprotected.
Computer is writing to
the wrong drive.
Check the drive letter in the
path statement.
Diskette drive cannot read a
diskette.
Not enough space is left
Use another diskette.
on the diskette.
Drive error has occurred. Run Computer Checkup from
the Compaq Diagnostics
diskette.
Diskette is not formatted. Format the diskette. At
the system prompt, enter
FORMAT A:
The wrong type of diskette is
being used.
Use the type of diskette
required by the drive.
Diskette has a bad sector. Copy files to hard drive or
another diskette. Reformat bad
floppy.
Drive error has occurred. Run Computer Checkup from
Diskette is not formatted. Format the diskette. At the
Cannot boot from diskette. Bootable diskette is not in
drive A.
Diskette Boot has incorrect
setting in Computer Setup.
Solving Display Problems
the Compaq Diagnostics
diskette.
system prompt, enter
FORMAT A:
Put the bootable diskette in
drive A.
Run Computer Setup and set
diskette as first to boot.
This section lists some common causes and solutions for computer display and external monitor
problems.
You can perform a monitor self-test on an external VGA color or monochrome monitor by
disconnecting the monitor from the computer. To do so, complete the following steps:
1. Turn off the monitor.
2. Turn off the computer.
3. Disconnect the monitor signal cable from the computer.
4. Turn on the monitor and allow it to warm up for one minute.
The display should be white. A narrow black border may also appear on the left and right sides of
the display. Either of these displays indicates that the monitor is working properly.
Solving Display Problems
Problem Probable Cause Solution(s)
Screen is dim. Control for brightness or
contrast (if applicable) is not
set properly.
Adjust the Brightness of the
display by using Fn + F7 or
Fn + F8.
Adjust the Contrast of the
display by using Fn + F5 or
Fn + F6.
Computer screen is in direct
light.
Screen is blank. Screen save was initiated by
Power Management due to
Tilt display or move
computer.
Press any key or touch the
Touch Pad.
lack of user activity.
Display has overheated. If computer is in direct
Display is blank and the Power icon
is flashing, or the Suspend icon is
present.
Internal display is blank and the
screen on an external monitor
displays information.
Internal display flashes or has
garbled characters when computer is
connected to external monitor.
The light tubes on the edge of the display
panel do not light up at all and Power-On SelfTest (POST) completes when the unit is
powered up.**
sunlight, move it and allow it
to cool off.
System is in Suspend mode. Press any key or touch the
Touch Pad.
Display function was
switched to the external
Use Fn + F3 to switch
between LCD or CRT.
monitor.
Using 1024 × 768 or higher
Restart the computer.
resolution on external
monitor and have toggled
back to internal display,
which supports up to 800 ×
600.
Improper backlight or display cable
connections
Replace the display assembly.
The light tubes on the edge of the display
panel do not light up at all and Power-On SelfTest (POST) does not complete when the unit
is powered up.**
Backlight (brightness) cannot be adjusted with
Fn + F7 or Fn + F8.
Defective inverter board. Replace the display assembly.
Defective display cable. Replace the display assembly.
Defective display panel. Replace the display assembly.
Defective system board. Replace the system board.
Defective system board. Replace the system board.
Improper display cable connections. 1. Reseat the display cable to the
system board.
2. Replace the display assembly.
Defective inverter board. Replace the display assembly.
Defective display cable. Replace the display assembly.
Defective system board. Replace the system board.
Contrast cannot be adjusted with
Fn + F5 or Fn + F6.
** This problem indicates that the backlight or its power circuitry has failed. Since you cannot observe the POST result on
the display panel when the backlight is not functioning, connect the unit to an external monitor before powering the unit
up. If an external monitor is not available, verify that POST completes by opening and closing the display, listening for the
single or double beep, and watching for the LEDs to turn on at the front of the computer.
System may have a TFT display
(which is always at maximum
contrast)
Improper display-cable connections. 1. Reseat the display cable to the
Defective inverter board. Replace the display assembly.
Defective display cable. Replace the display assembly.
Defective system board. Replace the system board.
No adjustment is possible.
system board.
2. Replace the display assembly.
Problem Probable Cause Solution(s)
This display panel has a continuous pattern
across it (e.g., a "jailbars" pattern), has a
single color on it, or has garbled graphics
across the entire panel. This failure is for
patterns across the entire panel
(not just on one section).
Improper display cable
connections
Defective display cable. Replace the display assembly.
Defective inverter board. Replace the display assembly.
Reseat the display cable to the following
until the problem is solved:
1. System board
2. Display assembly
Ghost bars extending from graphics on the
display.
A single line, a small group of lines, or a block
appears on the display panel. This failure
occurs in only a section of the display panel.
Defective system board. Replace the system board.
Common characteristic of STN
displays.
Defective display panel. Replace the display assembly.
1. Change the background colors.
2. Adjust the Contrast of the display by
using Fn + F5 or Fn + F6.
To perform a "self-test" on an external VGA color or monochrome monitor, note the following: The screen should
NOTE:
be white. A narrow black border may also appear on the left and right sides of the display. Either of these displays
indicates that the monitor is working properly.
Solving Hard Drive Problems
Some common causes and solutions for hard drive problems are listed in the following table.
CAUTION: To prevent loss of information, always maintain an up-to-date backup of your hard drive at all
times, in case of errors or failures.
Solving Hard Drive Problems
Problem Probable Cause Solution(s)
Reading hard drive takes an unusually
long time after restarting the computer.
Hard drive error occurs. Hard drive has bad sectors or has
Hard drive does not work. Hard drive is not seated properly. Turn off and unplug the computer,
System entered Hibernation due to
low battery condition and is now
exiting from it.
failed.
Give the system time to restore the
previously saved data to its exact state
before Hibernation.
Computer Checkup.
Run
remove the battery pack, and remove
and then reinstall the hard drive.
Solving Hardware Installation Problems
Some common causes and solutions for hardware installation problems are listed in the following
table.
Solving Hardware Installation Problems
Problem Probable Cause Solutions(s)
A new device is not recognized as
part of the computer system.
Cable(s) of new external
device are loose, or
power cables are unplugged.
Power switch of new external
device is not turned on.
Ensure that all cables are
properly and securely
connected.
Turn off the computer, turn on
the external device, then turn
on the computer to integrate
the device with the computer
system.
Device is not seated properly. Turn off the computer and
reinsert the device.
Solving Keyboard/Numeric Keypad Problems
Some common causes and solutions for keyboard/numeric keypad problems are listed in the
following table.
Solving Keyboard/Numeric Keypad Problems
Problem Probable Cause Solution(s)
Embedded numeric keypad on
computer keyboard is disabled.
Num Lock function is not
enabled.
Press the Shift+NumLk keys
to enable the Num Lock
function and embedded
numeric keypad. The Num
Lock icon on the status panel
turns on.
Embedded numeric keypad is
disabled and Num Lock function is
on.
External numeric keypad is
connected to the computer.
Disconnect the external
numeric keypad from the
computer.
Solving Memory Problems
Some common causes and solutions for memory problems are listed in the following table.
Solving Memory Problems
Problem Probable Cause Solution(s)
Memory count during Power-On SelfTest (POST) is incorrect.
"Out of Memory" message is
Optional memory expansion
card is installed incorrectly,
is incompatible with
the computer, or is defective.
System ran out of
Ensure that the optional
memory expansion card is
installed correctly.
Check the application
displayed on the screen or
memory for the application.
insufficient memory error occurs
during operation.
Too many TSR (terminate-
and stay-resident)
applications are running.
Solving Minor Problems (continued)
or return to the Troubleshooting index page.
documentation for memory
requirements.
Install additional memory.
Remove from memory any
TSR applications that you do
not need.
Maintenance & Service Guide
Presario 1200 Series
Model: 1245
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Solving PC Card Problems
Some common causes and solutions for PC Card problems are listed in the following table.
Solving PC Card Problems
Problem Probable Cause Solution(s)
When turned on, the
computer does not beep
when a PC Card is inserted.
Card is not inserted properly.
PC Card beeps are disabled.
Ensure that the card is
inserted in the correct
orientation.
Double-click the PC Card icon
in the Control Panel; click the
Global Settings tab; then,
enable PC Card sound effects.
Speaker is turned off or
volume is turned down.
Press volume buttons to
turn the speaker on; then,
increase the volume.
PC Card drivers are not
installed.
Double click the Add New
Hardware icon in the Control
PC Card modem, fax, or
network card does not work.
Card or card driver is not
supported.
Card is not fully inserted into
the slot or is not inserted
properly.
Telephone cord is not plugged
Panel for installation
instructions.
If PC Card or drivers are not
compatible with Windows,
install drivers and use the PC
Card in MS-DOS mode.
Contact your Compaqauthorized service provider
for a list of PC Cards tested
successfully in Compaq PC
Card platforms.
Ensure that the card is
inserted in the correct
orientation.
Check and secure telephone
PC Card modem or fax card
does not work.
Modem network PC Card
does not work.
in all the way.
Necessary drivers are not
connection.
Install drivers.
installed (turned on).
You are trying to access the
card using the wrong COM
See
COM port.
Specifications to verify
port.
The card conflicts with a
serial device.
See
Specifications to verify
address.
The card is not supported. Use supported cards only.
Network driver is not
Install driver.
installed or is not set up
properly.
Telephone cord is not
Verify telephone connection.
Memory or storage card does
not work.
properly connected.
SRAM and flash
memory cards require that
the memory card driver be
loaded (turned on).
Flash memory cards require
the that the Microsoft
FlashFile System be loaded.
Hard drives on flash
mass storage cards require
that the
PC Card ATA driver
be loaded.
Install driver.
You are trying to access the
hard drive card using the
wrong drive letter.
Double-click My Computer
to verify the drive letter
assigned to the card.
The card is not supported. Contact your Compaq
authorized service provider
for a list of PC Cards tested
successfully in Compaq PC
Card platforms.
Solving Power Problems
Solving Power Problems
Problem Probable Cause Solution(s)
Computer won't turn on and
battery pack is not inserted.
Computer turned off while it
was left unattended and the
power icon is off.
Computer is not connected to
a power source.
Power cords to the external
power source are unplugged.
Insert battery or connect an
external power source.
Ensure that power cords
connecting the computer and
the external power source are
plugged in properly.
Power adapter is defective. Replace AC Adapter and
restart.
System board is defective. Replace the system board.
System initiated Hibernation
due to a critical low-battery
condition.
Replace the battery pack with
a fully charged battery pack or
connect the computer to an
external power source. Then
turn on the computer.
System initiated Hibernation
Turn on the computer.
after a preset timeout.
Solving Printer Problems
If you experience problems printing, run a printer self-test. Refer to the documentation provided with your printer for
instructions. If the self-test fails, it is a printer-specific problem. Also refer to the printing section of your application
documentation.
Solving Printer Problems
Problem Probable Cause Solution(s)
Printer will not turn on. The signal cable may not be
Ensure that the signal cable is
connected properly, or the
printer is unplugged.
Printer will not print. Printer is not turned on or is off
line.
The device drivers for your
application are not installed.
Printer that is set up for a
network is not connected to the
network.
properly connected and that the
power cord is connected to the
electrical outlet.
Turn the printer on and set it to
on line.
Refer to the printer
documentation to install the
correct printer driver.
Connect the printer to the
network.
Printer prints garbled
information.
Printer cable is too long,
Replace the cable.
unshielded, or defective.
Paper tray is empty. Fill the paper tray with paper
and set the printer to online.
Correct printer drivers are not
installed.
Refer to the printer
documentation to install the
correct printer driver.
Cable is not connected properly. Ensure that the printer signal
cable is properly connected to
the computer.
Cable is defective. Replace the printer cable and
retest.
Solving Touch Pad/Pointing Device Problems
Some common causes and solutions for Touch Pad/pointing device problems are listed in the
following table.
Solving Touch Pad/Pointing Device Problems
Problem Cause Solution(s)
Touch Pad or mouse does not
work.
Incorrect or no device driver is
installed.
The device driver is not
Install the device driver and add
to the AUTOEXEC.BAT file or
CONFIG.SYS file.
Install the Touch Pad/mouse
installed in Windows.
External mouse does not work. Mouse is not securely
connected or is connected to an
incorrect external connector.
Touch Pad or mouse does not
Mouse is not enabled. Enter MOUSE at the system
work even though the device is
enabled in Windows.
Cable not properly seated in
Touch Pad board.
driver in Windows.
Ensure that the mouse is
securely connected to the
appropriate external connector.
prompt to activate the mouse
device driver.
Add a line in the
AUTOEXEC.BAT file to
automatically activate the
mouse device driver each time
computer is turned on or
restarted.
Reseat cable.
Cursor skips or moves
abnormally when using the
Touch Pad.
Defective Touch Pad board. Replace Touch Pad board.
Defective system board. Replace system board.
Device driver is not correctly
installed in Windows.
The Touch Pad needs to be
cleaned.
Install the appropriate device
driver in Windows.
Clean the Touch Pad with a
cloth dampened with alcohol or
an ammonia-based glass
cleaner. Wipe up liquid with a
dry cloth.
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