Compaq Presario,Presario 1234 User manual

Thank you for purchasing this Factory Service
Manual CD/DVD from servicemanuals4u.com.
Please check out our eBay auctions for more great
deals on Factory Service Manuals:
servicemanuals4u

Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1230 and 1232
Compaq.com
United States
Maintenance & Service Guide
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures |Specifications
Pin Assignments |Battery Pack Operations
Notice
Preface
Product
Description
Troubleshooting
Illustrated
Parts Catalog
Removal &
Replacement
Procedures
Specifications
Connector Pin
Assignments
Battery Pack
Operations
Click to download a ZIP file containing the complete Maintenance & Service Guide for
this product.
Welcome to the Maintenance & Service Guide (MSG). This online guide is designed to serve the needs
of those whose job it is to repair Compaq products. Many of the components of the hardcopy MSG are
contained in this online guide. The Notice, contains the copyright and trademark information. The
Preface shows symbol conventions, Technician Notes and Serial Number locations on the unit.
This MSG will be periodically maintained and updated online as needed.
For content comments or questions, contact us.
To report a technical problem, contact your Regional Support Center or IM Help Center.
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...%201238%201240%201242%201250%201252/index.html (1 of 2)6/27/2004 2:22:38 AM

Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1230 and 1232
Compaq Home
Search
Showroom
Service
Worldwide
Compaq.com
Comments?
Copyright
Revised: 22 October 1998
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...%201238%201240%201242%201250%201252/index.html (2 of 2)6/27/2004 2:22:38 AM

"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
SEARCH
Maintenance & Service Guide
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
| 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.
Ó 1998 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
Compaq, Presario Registered U. S. Patent and Trademark Office.
Microsoft, MS-DOS, and Windows are registered trademarks of Microsoft Corporation.
Windows 95 is a trademark of Microsoft Corporation.
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
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...201238%201240%201242%201250%201252/notice.html (1 of 2)6/27/2004 2:22:39 AM

"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
First Edition (August 1998)
Compaq Computer Corporation
1.800.AT.COMPAQ
privacy and legal statement
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...201238%201240%201242%201250%201252/notice.html (2 of 2)6/27/2004 2:22:39 AM

"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1234, 1235, 1236, 1237, 1238, 1240, and 1252
United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
SEARCH
Maintenance & Service Guide
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
| 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 1200 Series Portable Computers.
Compaq Computer Corporation reserves the right to make changes to the Compaq Presario 1200 Series Portable
Computers without notice.
Symbols
The following words and symbols mark special messages throughout this guide.
WARNING: Text set off in this manner indicates that failure to follow directions in the warning could result in bodily harm
or loss of life.
CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage to equipment or
loss of data.
IMPORTANT: Text set off in this manner presents clarifying information or specific instructions.
NOTE: Text set off in this manner presents commentary, sidelights, or interesting points of information.
Technician Notes
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...01238%201240%201242%201250%201252/preface.html (1 of 2)6/27/2004 2:22:40 AM

"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1234, 1235, 1236, 1237, 1238, 1240, and 1252
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
1.800.AT.COMPAQ
privacy and legal statement
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...01238%201240%201242%201250%201252/preface.html (2 of 2)6/27/2004 2:22:40 AM

"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
SEARCH
Maintenance & Service Guide
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures |Specifications
Pin Assignments |Battery Pack Operations
Product Description
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
Computer is
a
continuation
of the new
generation
of
multimedia
portable
computers
with an
innovative
integrated
design,
outstanding
audio and
video,
advanced
core
features,
and
attractive
styling. This
full-
function,
AMD-K6 or
Pentium-
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...01238%201240%201242%201250%201252/product.html (1 of 2)6/27/2004 2:22:40 AM

"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
based
portable
computer
allows full
desktop
functionality.
1.800.AT.COMPAQ
privacy and legal statement
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...01238%201240%201242%201250%201252/product.html (2 of 2)6/27/2004 2:22:40 AM

"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
SEARCH
Maintenance & Service Guide
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures |Specifications
Pin Assignments |Battery Pack Operations
Troubleshooting
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 1200 Series Portable Computers. The basic
steps in troubleshooting include:
1. Follow the Preliminary Steps.
2. Run the Power-On Self-Test
(POST).
3. Follow the recommended actions
described in the diagnostic tables, if
you are unable to run POST or if
POST displays an error message.
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.
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20check...201238%201240%201242%201250%201252/trouble.html (1 of 2)6/27/2004 2:22:40 AM

"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
NOTE:
If the problem is
intermittent, check the
computer several times to
verify that the problem is
solved.
1.800.AT.COMPAQ
privacy and legal statement
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20check...201238%201240%201242%201250%201252/trouble.html (2 of 2)6/27/2004 2:22:40 AM

file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20checked%20ok/NOT...1236%201237%201238%201240%201242%201250%201252/illust.html
United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
SEARCH
Maintenance & Service Guide
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures |Specifications
Pin Assignments |Battery Pack Operations
Illustrated Parts Catalog
System Unit
Boards
Display
Assembly
Mass Storage
Devices
Miscellaneous
Cable Kit
Cables
Miscellaneous
Hardware and
Plastics Kit
Miscellaneous
Parts
Documentation
and Software
This section provides an breakdown and identifies the spare parts ordering
number associated with each item(s) for the Compaq Presario 1200 Series
Portable Computers.
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20check...%201238%201240%201242%201250%201252/illust.html (1 of 2)6/27/2004 2:22:41 AM

file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20checked%20ok/NOT...1236%201237%201238%201240%201242%201250%201252/illust.html
1.800.AT.COMPAQ
privacy and legal statement
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20check...%201238%201240%201242%201250%201252/illust.html (2 of 2)6/27/2004 2:22:41 AM

"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
SEARCH
Maintenance & Service Guide
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
| 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
Report the computer serial number to Compaq when requesting
information or ordering spare parts.
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...01238%201240%201242%201250%201252/removal.html (1 of 2)6/27/2004 2:22:42 AM

"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
Hard Drives
CD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Upper CPU
Cover
Speaker
Assembly
Diskette Drive
Fan Assembly
System Board
Dip Switch
Settings
Memory
Module
1.800.AT.COMPAQ
privacy and legal statement
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...01238%201240%201242%201250%201252/removal.html (2 of 2)6/27/2004 2:22:42 AM

"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
SEARCH
Maintenance & Service Guide
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures |Specifications
Pin Assignments |Battery Pack Operations
Specifications
This chapter covers the following specifications of Compaq Presario 1200 Series Portable Computers:
●Computer models
●Physical and environmental
●System Interrupts
●System DMA
●System I/O Address
●System Memory Catalog
●Display
●Memory expansion
●Diskette drive
●Hard drive
●CD drive
●Battery pack
Physical and Environmental
Computer Specifications
U.S. Metric
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...7%201238%201240%201242%201250%201252/spec.html (1 of 8)6/27/2004 2:22:45 AM

"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
Dimensions
Height
Depth
Width
1.97 in
12.20 in
10.08 in
4.95 cm
31.00 cm
25.40 cm
Weight
Model 1234
Model 1235
Model 1236
Model 1237
Model 1238
Model 1240
Model 1242
Model 1250
Model 1252
7.326 lb
7.326 lb
7.326 lb
7.326 lb
7.326 lb
7.326 lb
7.326 lb
7.326 lb
7.326 lb
3.33 kg
3.33 kg
3.33 kg
3.33 kg
3.33 kg
3.33 kg
3.33 kg
3.33 kg
3.33 kg
Stand-Alone (Battery Pack) Power
Requirements
Nominal Operating
Maximum Average
Peak Operating
NiMH
W @ 9.6 V
W @ 9.6 V
W @ 9.6 V
Li-ion
W @ 14.4 V
W @ 14.4 V
W @ 14.4 V
AC Power Requirements
Operating Voltage
Operating Current
Operating Frequency
Maximum Transient
100-240 V
0.8/0.4 A RMS
47-63 Hz
Meets IEC 801-4 and IEC801-5
1kV for 50 ns
Temperature
Operating 50° to 95 °F 10° to 35 °C
Nonoperating -4° to 140 °F -20° to 60 °C
Relative Humidity (noncondensing)
Operating 10 to 90% 35°C to 90%
Nonoperating (tw = 38.7°C max) 5 to 95% 60°C to 95%
Altitude
Operating 0 to 10,000 ft 0 to 3.15 km
Nonoperating 0 to 30,000 ft 0 to 9.14 km
Shock
Operating 10 G, 11 ms, half sine
Non operating 240 G, 2 ms, half sine
Vibration
Operating 0.5 G
Nonoperating 1.5 G
NOTE: Applicable product safety standards specify thermal limits for plastic surfaces. Compaq Presario 1200
Series Portable Computers operate well within this range of temperatures.
System Interrupts
System Interrupts
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...7%201238%201240%201242%201250%201252/spec.html (2 of 8)6/27/2004 2:22:45 AM

"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
Hardware IRQ System Function
IRQ0 Timer Interrupt
IRQ1 Standard 101/102-Key or Microsoft Natural Keyboard
IRQ2 Programmable interrupt controller
IRQ3 Compaq Presario 56K-DF
IRQ4 Communications Port (COM1)
IRQ5 ES1869 Plug and Play AudioDrive
IRQ6 Standard Floppy Disk Controller
IRQ7 Printer Port (LPT1)
IRQ8 System CMOS/real time clock
IRQ9 (free)
IRQ10 OPTi 82C861 PCI to USB Open Host Controller
IRQ10 IRQ Holder for PCI Steering
IRQ11 IRQ Holder for PCI Steering
IRQ11 IRQ Holder for PCI Steering
IRQ11 NeoMagic MagicGraph 128XD
IRQ11 Texas Instruments PCI-1131 CardBus Controller
IRQ11 Texas Instruments PCI-1131 CardBus Controller
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
System DMA
System DMA
Hardware DMA System Function
0ES1869 Plug and Play AudioDrive
1ES1869 Plug and Play AudioDrive
2Standard Floppy Disk Controller
3(free)
4Direct memory access controller
5(free)
6(free)
7(free)
System I/O Address
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...7%201238%201240%201242%201250%201252/spec.html (3 of 8)6/27/2004 2:22:45 AM

"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
System I/O Address
I/O Address (Hex) System Function (Shipping Configuration)
x0000 - x000F Direct memory access controller
x0020 - x0021 Programmable interrupt controller
x0022 - x0024 Motherboard resources
x0040 - x0043 System timer
x0060 - x0060 Standard 101/102-Key or Microsoft Natural Keyboard
x0061 - x0061 System speaker
x0064 - x0064 Standard 101/102-Key or Microsoft Natural Keyboard
x0070 - x0071 System CMOS/real time clock
x0080 - x0080 Motherboard resources
x0081 - x008F Direct memory access controller
x0092 - x0092 Motherboard resources
x00A0 - x00A1 Programmable interrupt controller
x00C0 - x00DF Direct memory access controller
x00EC - x00EF Motherboard resources
x00F0 - x00FF Numeric data processor
x0170 - x0177 Opti Viper Max Dual PCI IDE Controller
x0170 - x0177 Secondary IDE controller (dual fifo)
x01F0 - x01F7 Opti Viper Max Dual PCI IDE Controller
x01F0 - x01F7 Primary IDE controller (dual fifo)
x0220 - x022F ES1869 Plug and Play AudioDrive
x02F8 - x02FF Compaq Presario 56K-DF
x0330 - x0331 ES1869 Plug and Play AudioDrive
x0370 - x0371 Motherboard resources
x0376 - x0376 Opti Viper Max Dual PCI IDE Controller
x0376 - x0376 Secondary IDE controller (dual fifo)
x0378 - x037F Printer Port (LPT1)
x0388 - x038B ES1869 Plug and Play AudioDrive
x03B0 - x03BB NeoMagic MagicGraph 128XD
x03C0 - x03DF NeoMagic MagicGraph 128XD
x03F0 - x03F5 Standard Floppy Disk Controller
x03F6 - x03F6 Opti Viper Max Dual PCI IDE Controller
x03F6 - x03F6 Primary IDE controller (dual fifo)
x03F7 - x03F7 Standard Floppy Disk Controller
x03F8 - x03FF Communications Port (COM1)
x040B - x040B Motherboard resources
x0480 - x048F Motherboard resources
x04D6 - x04D6 Motherboard resources
System Memory Catalog
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...7%201238%201240%201242%201250%201252/spec.html (4 of 8)6/27/2004 2:22:45 AM

"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
System Memory Catalog
Memory Address System Function
x00000000 - x0009FFFF System board extension for PnP BIOS
x000A0000 - x000AFFFF NeoMagic MagicGraph 128XD
x000B0000 - x000BFFFF NeoMagic MagicGraph 128XD
x000C0000 - x000CBFFF NeoMagic MagicGraph 128XD
x000E0000 - x000FFFFF System board extension for PnP BIOS
x00100000 - x01FFFFFF System board extension for PnP BIOS
x03000000 - x03000FFF Texas Instruments PCI-1131 CardBus Controller
x03001000 - x03001FFF Texas Instruments PCI-1131 CardBus Controller
xFD000000 - xFDFFFFFF NeoMagic MagicGraph 128XD
xFEA00000 - xFEBFFFFF NeoMagic MagicGraph 128XD
xFECFF000 - xFECFFFFF OPTi 82C861 PCI to USB Open Host Controller
xFED00000 - xFEDFFFFF NeoMagic MagicGraph 128XD
xFFFC0000 - xFFFFFFFF Motherboard resources
Display (Information not available)
12.1" (Diagonal) TFT Display
U.S. Metric
Dimensions
Height
Width Information
not available Information not available
Display Dimensions
Width
Height
Depth
Information
not available Information not available
Weight Information
not available Information not available
Contrast Ratio Information
not available Information not available
Brightness Information
not available Information not available
Total Power Consumption Information
not available Information not available
12.1" (Diagonal) HPA Display
U.S. Metric
Dimensions
Height
Width Information
not available Information not available
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...7%201238%201240%201242%201250%201252/spec.html (5 of 8)6/27/2004 2:22:45 AM