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
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First Edition (June 1998)
Compaq Computer Corporation
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Preface
This Maintenance and Service Guide is a troubleshooting guide that can be used for reference when servicing the
Compaq Presario 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
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WARNING: Only authorized technicians trained by Compaq should repair this equipment. All troubleshooting and repair
procedures are detailed to allow only subassembly/module level repair. Because of the complexity of the individual boards
and subassemblies, the user should not attempt to make repairs at the component level or to make modifications to any
printed circuit board. Improper repairs can create a safety hazard. Any indications of component replacement or printed
circuit board modifications may void any warranty
Serial Number
When requesting information or ordering spare parts, the computer serial number should be provided to Compaq. The
serial number 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
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Product Description
Models and
Features
Controls and
Lights
Left Side
Components
Right Side
Components
Bottom of
Unit
Rear
Connectors
Power
Management
for Windows
98
Power
Management
for Windows
95
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
fullfunction,
Cyrix-based
portable
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computer
allows full
desktop
functionality.
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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.
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NOTE:
If the problem is
intermittent, check the
computer several times to
verify that the problem is
solved.
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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.
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00C0h-00DFhDMA Controller
00ECh-00EFhMotherboard resources
00F0h-00FFhNumeric data processor
0170h-0177hSecondary IDE controller
01F0h-01F7hPrimary IDE controller
0376h-0376hStandard IDE/ESDI Hard Disk Controller
0378h-037FhPrinter Port (LPT1)
0388h-038BhAUDIO(TM) 16-bit Sound
0398h-0399hMotherboard resources
03B0h-03BBhGraphics Controller
03C0h-03DFhGraphics Controller
03F0h-03F5hStandard Floppy Disk Controller
03F6h-03F6hStandard IDE/ESDI Hard Disk Controller
03F7h-03F7hStandard Floppy Disk Controller
03F8h-03FFhCommunications Port (COM1)
0480h-048FhMotherboard resources
04D0h-04D1hMotherboard resources
0CF8h-0CFFhPCI bus
3000h-307FhCyrix Cx5520 PCI to ISA bridge
4000h-401FhCyrix Cx5520 PCI to ISA bridge
5000h-500FhCyrix Cx5520 PCI to ISA bridge
System Memory Catalog
System Memory Catalog
Memory AddressSystem Function
00000000h-0009FFFFhSystem board extension for PnP BIOS
000A0000h-000AFFFFhGraphics Controller
000B0000h-000BFFFFhGraphics Controller
000C0000h-000C7FFFhGraphics Controller
000C8000h-000C8FFFhPCI-1221 CardBus Controller
000C9000h-000C9FFFhPCI-1221 CardBus Controller
000CC000h-000CFFFFhMotherboard resources
000E0000h-000FFFFFhSystem board extension for PnP BIOS
00100000h-01FFFFFFhSystem board extension for PnP BIOS
40008000h-4000FFFFhMotherboard resources
40010000h-40010FFFhCyrix Cx5520 PCI to ISA bridge
40018000h-41017FFFhMotherboard resources
FD000000h-FDFFFFFFhGraphics Controller
FEA00000h-FEBFFFFFhGraphics Controller
FEC00000h-FECFFFFFhGraphics Controller
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FEDFE000h-FEDFEFFFhCompaq PCI to USB Open Host Controller
FFFC0000h-FFFFFFFFhMotherboard resources
Display (Information not available)
12.1" (Diagonal) HPA 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
Memory Expansion
Memory Expansion
System MemoryExpansion Board MemoryTotal Memory
32-MB16-MB48-MB
32-MB32-MB64-MB
32-MB64-MB96-MB
Diskette Drive (Information not available)
Diskette Drive
Capacity per Diskette (High/Low)
Information not available
Diskette Size
Information not available
Number of LED Indicators (Read/Write)
Information not available
Number of Drives Supported
Information not available
Drive Rotation (rpm)
Information not available
Transfer Rate (Kbps)
Information not available
Bytes per Sector
Information not available
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Sectors per Track (High/Low)
Information not available
Tracks per Side (High/Low)
Information not available
Access Times
Track-to-Track (ms)
Average (ms)
Setting Time (ms)
Latency Average (ms)
Information not available
Cylinders (High/Low)
Information not available
Number of Read/Write Heads
Information not available
Hard Drive (Information not available)
Hard Drives
3.2-GB2.1-GB
Capacity Per Drive
Information not availableInformation not available
Drive Type
Information not availableInformation not available
Logical Configuration
Cylinders
Heads
Sectors per track
Bytes per sector
Information not availableInformation not available
Seek Times
(Typical, Including settling in ms)
Single track
Average
Full stroke
Information not availableInformation not available
Transfer Rate
At interface
Information not availableInformation not available
CD Drive (Information not available)
CD Drive
24× CD Drive
Dimensions
Information not available
Weight
Information not available
Rotational Speed
Information not available
Typical Transfer Rate
Sustained Data Transfer Rate
Information not available
Access Time
Average Random Access Time
Information not available
Spin Up time
Information not available
Data Buffer Capacity
Information not available
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Battery Pack
Battery Pack
Nickel Metal Hydride (NiMH)Lithium Ion (Li ion) *
Dimensions
Height
Length
Width
0.8 in (20.3 mm)
5.7 in (145 mm)
3.1 in (78.7 mm)
0.8 in (20.3 mm)
5.7 in (145 mm)
3.1 in (78.7 mm)
Weight
1.01 Ib (458.1 g)0.90 Ib (408.2 g)
Battery Pack Operating Time
2:30 hr3:00 hr
Energy
Nominal Open Circuit Voltage
Capacity
Power
9.6 V
3200mAH
40 W
14.4 V
2500mAH
40 W
Environmental Requirements
Operating Temperature
Non-operating Temperature
Charging Temperature
32° F (0-50° C)
-20° C -60° C
5° C-45° C
32° F (0-50° C)
-20° C -60° C
5° C-45° C
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Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
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 (*).
Parallel Connector
PinSignalPinSignal
1Strobe*10Acknowledge*
2Data Bit 011Busy
3Data Bit 112Paper Out
4Data Bit 213Select
5Data Bit 314Auto Linefeed*
6Data Bit 415Error*
7Data Bit 516Initialize Printer*
8Data Bit 617Select In*
9Data Bit 718-25Signal Ground
* = Active low
Serial Connector
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ConnectorPinSignal
1
2
3
4
5
6
7
8
9
Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Ready to Send
Clear to Send
Ring Indicator
Keyboard/Mouse
ConnectorPinSignal
1
2
3
4
5
6
Data
Not defined
Ground
+5 VDC
Clock
Not defined
External VGA Monitor
ConnectorPinSignal
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1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Red Analog
Green Analog
Blue Analog
Not connected
Ground
Ground Analog
Ground Analog
Ground Analog
Not connected
Ground
Monitor Detect
DDC2B Data
Horizontal Sync
Vertical Sync
DDC2B Clock
Universal Serial Bus
ConnectorPinSignal
1
2
3
4
5
6
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Modem
ConnectorPinSignal
1
2
3
4
5
6
Unused
Unused
Tip
Ring
Unused
Unused
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Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Battery Pack Operating Time
This appendix covers the following information concerning battery pack operating time:
● Increase battery pack operating time
● Conditioning a battery pack
● Disposal 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:
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● Set the power conservation levels in the Power Management utility to Maximum.
● 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.
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 fast charge arrow on the display
disappears. Your battery gauge may read 100 percent for a period of time before the arrow disappears.
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 battery pack charge times by model.
Battery Charge Time
ComputerOn LineOff Line
Model 1/NiMH Battery Pack4.0 hours premature termination2:00 hr
Model 2/Li ion Battery Pack 4.5 hours premature termination2:50 hr
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In the interest of safeguarding our environment. Compaq Computer Corporation recommends that nickel metal
hydride (NiMH) and lithium ion (Li ion) 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 expose potentially harmful battery components.
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