MSG Index | 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
See the Notice for copyright and trademark information, and see the Preface for symbol
conventions, Technician Notes and Serial Number locations on the unit.
For content comments or questions, contact the
contact your Regional Support Center or IM Help Center.
This MSG will be periodically updated online as needed.
Editor. To report a technical problem,
Page 2
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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.
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 1660 Model Portable Computers
First Edition (December 1999)
Compaq Computer Corporation
Page 3
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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 1660 Model Portable
Computers. Compaq Computer Corporation reserves the right to make
changes to the Compaq Presario 1660 Model 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.
Text set off in this manner presents clarifying information or
IMPORTANT:
specific instructions.
Text set off in this manner presents commentary, sidelights, or
NOTE:
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 1660 Model Portable Computer documentation set
● Introducing Windows 95 Guide
● Service Training Guides
● Compaq Service Advisories and Bulletins
● Compaq QuickFind
● Compaq Service Quick Reference Guide
Page 4
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Product Description
Models and
Features
Upper Unit
Components
Front Bezel
Buttons
Front Bezel
Lights
Left Side
Components
Right Side
Components
Bottom of
Unit
Rear
Connectors
Power
Management
for Windows
98
Compaq
Presario
1600
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
portable
computer
allows full
desktop
functionality.
Page 5
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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 1660 Model Portable Computer. 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.
If the problem is intermittent,
check the computer several
NOTE:
times to verify that the problem
is solved.
Page 6
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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
External
Cables
Miscellaneous
Hardware and
Plastics Kits
Miscellaneous
Parts
This section provides a breakdown and identifies the spare parts
ordering number associated with items for the Compaq Presario 1660
Model Portable Computers.
Documentation
and Software
Page 7
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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
Assembly
Keyboard and
Heatspreader
Processor
Hard Drive
Upper CPU
Cover
DVD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Speaker
Report the computer serial number to Compaq when
requesting information or ordering spare parts.
Assembly
Diskette Drive
Fan Assembly
System Board
Memory
Module
Page 8
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
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 1660
Model 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
Pin SignalPinSignal
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 718-25 Signal Ground
* = Active low
Serial Connector
ConnectorPin Signal
1
2
Carrier Detect
Receive Data
3
4
5
6
7
8
9
Transmit Data
Data Terminal
Ready
Signal Ground
Data Set Ready
Ready to Send
Clear to Send
Ring Indicator
Keyboard/Mouse
ConnectorPin Signal
1
2
3
4
5
6
Data 1
Clock 2
Ground
+5 V
Clock 1
Data 2
External VGA Monitor
ConnectorPin Signal
1
2
3
4
5
6
7
8
9
10
11
12
Red Analog
Green Analog
Blue Analog
Not
connected
Ground
Ground
Analog
Ground
Analog
Ground
Analog
13
14
15
Not
connected
Ground
Monitor
Detect
DDC2B Data
Horizontal
Sync
Vertical Sync
DDC2B Clock
Universal Serial Bus
ConnectorPin Signal
Modem
ConnectorPin Signal
1
2
3
4
5
Unused
Unused
Tip
Ring
Unused
1
2
3
4
+5V
Data Data +
Ground
6
Unused
Port Replicator
PinSignalPinSignalPinSignalPinSignal
1N.C.21Printer Data 0 41N.C.61CTS
2N.C.22Printer Data 142N.C.62DCD
3Kb Clk 123Printer Data 243Switch A63DSR
4Joystick Data A24Printer Data 344Switch B64TXD
5Kb Data 125Printer Data 445Switch C65RTS
6Joystick Data B26Printer Data 546Switch D66N.C.
7Kb Clk 227Printer Data 647N.C.67Detect
8Joystick Data C28Printer Data 748MIDI In68N.C.
9Kb Data 229USB 0 -49MIDI Out69V. Sync
10Joystick Data D30USB 0 +50+5V70Ground
11Lp Select In31USB 1 -51+5V71H. Sync
12Lp Paper End32USB 1+52N.C.72Ground
13Lp Initialize33Adapter In53N.C.73Blue
14Lp Busy34Adapter In54N.C.74Ground
15Lp Error35Adapter In55N.C.75Green
16Lp Ack36Adapter In56Dock ID -76Ground
17Lp Auto Feed37Adapter In57RXD77Red
18Lp Strobe38Adapter In58Lp Select78Ground
19DDC2BC39N.C.59RI79N.C.
20DDC2BD40N.C.60DTR80N.C
Page 9
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
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
The power consumption requirements
NOTE:
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:
● 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. Allow the battery to drain until the computer reaches hibernation
and turns itself off. Do not plug in the AC adapter during this process. Also, the system should not be allowed to sleep. To
prevent sleep, you may either use the computer while the battery
is draining, or you may disable power management.
2. 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.
Your battery is now re-conditioned, and you may begin using the
computer normally.
The battery pack charge time may vary greatly from 2 hours to 5 hours or
more, depending on many factors (including whether it is charged on-line or
off-line).
Disposal of a Used Battery Pack
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.
Top of Page
Page 10
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Models and Features
Models and
Features
Upper Unit
Components
Front Bezel
Buttons
Front Bezel
Lights
Left Side
Components
Right Side
Components
Bottom of
Unit
Rear
Connectors
Compaq Presario 1660 Model Portable Computer
Display
Processor
Hard
13.3" TFT
300 MHz Pentium II
4 GB
Drive
Memory
CD Drive
Modem
Battery
64 MB or 128 MB SDRAM
DVD
56 Kbps Data/Fax with ITU V.90
High Capacity Li Ion
Power
Management
for Windows
98
Page 11
Maintenance & Service Guide
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog| Removal & Replacement Procedures| Specifications
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Front Bezel Buttons
Presario 1660 Model
Models and
Features
Upper Unit
Components
Front Bezel
Buttons
Front Bezel
Lights
Left Side
Components
Right Side
Components
Bottom of
Unit
Rear
Connectors
Power
Management
for Windows
98
1
Instant Internet
Access Button
2
Instant Search
Button
3
Volume Down
4
Scroll Up/down
Button
5
Volume Up
6
Secure ECommerce
Button (or
Favorite Web
site)
7
Instant E-Mail
Button
Page 13
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Front Bezel Lights
Maintenance & Service Guide
Presario 1660 Model
Pin Assignments|Battery Pack Operations
Models and
Features
Upper Unit
Components
Front Bezel
Buttons
Front Bezel
Lights
Left Side
Components
Right Side
Components
Bottom of
Unit
Rear
Connectors
1
Power
2
Battery Charge
3
AC Adapter
4
Num Lock
5
Cap Lock
6
Scroll Lock
Power
Management
for Windows
98
Page 14
Maintenance & Service Guide
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Left Side Components
Presario 1660 Model
Models and
Features
Upper Unit
Components
Front Bezel
Buttons
Front Bezel
Lights
Left Side
Components
Right Side
Components
Bottom of
Unit
Rear
Connectors
1. PC Card
Eject Lever
3. Diskette
Drive Slot
2. PC Card Slot 4. Diskette
Eject
Button
Power
Management
for Windows
98
Page 15
Maintenance & Service Guide
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Right Side Components
Presario 1660 Model
Models and
Features
Upper Unit
Components
Front Bezel
Buttons
Front Bezel
Lights
Left Side
Components
Right Side
Components
Bottom of
Unit
Rear
Connectors
1 Battery
Compartment
2 DVD Drive
3DVD Drive Eject
Button
4Manual DVD Eject
Hole
Power
Management
for Windows
98
Page 16
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Bottom of Unit
Maintenance & Service Guide
Presario 1660 Model
Pin Assignments|Battery Pack Operations
Models and
Features
Upper Unit
Components
Front Bezel
Buttons
Front Bezel
Lights
Left Side
Components
Right Side
Components
Bottom of
Unit
Rear
Connectors
1. Memory
Compartment
2. Feet
Power
Management
for Windows
98
Page 17
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Rear Connectors
Maintenance & Service Guide
Presario 1660 Model
Pin Assignments|Battery Pack Operations
Models and
Features
Upper Unit
Components
Front Bezel
Buttons
Front Bezel
Lights
Left Side
Components
Right Side
Components
Bottom of
Unit
Rear
Connectors
1. AC Adapter
2. USB
3. Security Slot
4. Serial Port
5. Port Replicator Port
6.External Monitor Port
7.Parallel Printer Port
8.Keyboard/Mouse Port
9.Modem Jack
Power
Management
for Windows
98
Page 18
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
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 a Lockup
● Servicing Your Computer - Full Off Mode
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.
Each of the following system components can be made to go to sleep after periods of inactivity:
● system (goes into Sleep (Standby) mode)
● screen (times out and goes blank)
● hard drive (spins down)
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 delay time settings. Note: the setting for hard drive must be less than or equal
to the setting for System.
IMPORTANT:
Never.
There are five categories of power management settings under the Control Panel. The default
setting for each feature is listed below in the tables.
Power Management Properties
Tab: Power Schemes:Plugged inRunning on
Batteries
If you're on a network, it's recommended that you set System Standby to
Always on System
Standby:
Turn OFF Monitor
Always on System
Standby:
Never15 minutes
After 15 minutesAfter 10 minutes
After 15 minutesAfter 10 minutes
Tab: Monitor: Laptop Display (Maximum resolution according to unit display
size)
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 completely off and saves power over the
active (On) mode. Compaq Presario Notebook computers have two levels of sleep, Hibernation and
Sleep.
Hibernation - by pushing the power button once your computer will 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 will maintain system information and open files. Unsaved information will be lost if you
turn off your system prior to system wake-up, or if you lose power while using the AC adapter.
CAUTION:While in Sleep mode, your computer will maintain system information and open
files. Unsaved information will be lost if you turn off your system prior to system wakeup, or if you lose power while using the AC adapter.
Hibernation Mode
Hibernation helps conserve battery life and protects 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 will display a progress screen, as it automatically saves the machine state before it shuts
down and turns itself off. Your computer will automatically go 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 will display 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.
ModeTo InitiateTo EndIndicators
Sleep
Manual keys combination
- Fn+F4
Time Out Default 15 minutes. If
Press any
key
Flashing
green Power
LED
on Battery power (system will
not go to Sleep if on AC power)
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)
OffPerform normal Windows
shutdown via the start button,
or press and hold down the
power button for 4 seconds
Press Power
Button once
Press Power
Button once
No Power
LED, blank
screen
No Power
LED, blank
screen
Servicing Your Computer - Full Off Mode
If you need to install or replace components in your system, you must turn the computer off
completely. Follow the instructions above for properly putting the computer into Off mode, unplug
from the outlet, and remove the battery (see battery section for instruction on removing battery).
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 it with a single press of the Power Button. If it still doesn't
recover, press the Power Button and hold it for four seconds to shut it down, 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.
Battery Operating Time
Battery operating time is affected by variables, such as the following:
● Power conservation settings
● Hardware configuration
● Software applications
● Installed options
● Display brightness
● Hard drive usage
● Power button
● Changes in operating temperature
● Type and number of installed PC Cards
For more information on increasing battery pack operating time, conditioning the battery pack, and
disposing of a used battery pack, refer to the
Battery Pack Operations.
Page 19
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
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 problem may be related to
IMPORTANT:
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 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 the preliminary steps are completed, you are ready to run
POST.
Page 20
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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.
If the password is not
known, clear it by
removing the RTC
battery (located on the
system board) as
follows:
1. Turn off the
computer.
2. Disconnect the power
cord.
Remove the battery
3.
pack.
4. Remove the palmrest
assembly.
5. Remove the
keyboard and
heatspreader.
6. Remove the modem
7. Remove RTC battery
for 10 seconds, then
replace it .
8. Reassemble the
computer.
9. Turn on the
computer to verify that
the power-on password
has been cleared. If it
has not been cleared,
repeat all steps above.
Page 21
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Power-On Self Test (POST)
Running POST
To run POST, turn off the computer, then turn it back on.
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 the following tables for a list of POST codes and their
relevant descriptions. If there is more than one recommended action, only try
the later actions in the list if the first action recommended does not solve the
problem.
If the system is not functioning well enough to run POST,
NOTE:
or if the display is not functioning well enough to show
POST error messages, refer to the Troubleshooting tables.
102
162
XX000YZZ
201
301
304
601
605
1780
1782
System board failure
System options not set
Memory Error
Keyboard Error
Keyboard or System Unit Error
Diskette Controller Error
Diskette Drive Error
Primary Hard Drive 0 Failure
Hard Drive Controller
Power-On Self-Test Messages
102-System Board Failure
Probable CauseRecommended Action
DMA, timers, etc.
Replace the system board.
162-System Options Not Set
Probable CauseRecommended Action
Configuration incorrect
CMOS reflects that an
Run Computer Setup.
Run Computer Setup.
invalid
configuration has been
set.
XX000YZZ 201-Memory Error
Probable cause Recommended action
RAM failure1. Replace the memory
modules.
2.
Replace the system board.
Memory test data
error
1.
Replace the memory
modules.
2.
Replace the system board.
XX000YZZ RAM
Replace the system board.
failure
301-Keyboard Error
Probable
Recommended Action
Cause
Keyboard failure1. Ensure the 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
Keyboard or
system board
error
601-Diskette Controller Error
Probable
Cause
Mismatch in
drive type or
failure in the
diskette
controller
Recommended Action
1. Replace the keyboard.
2. Replace the TouchPad or mouse.
Replace the system board.
3.
Recommended Action
Run Computer Checkup
1.
(TEST).
2. Check and/or replace cables.
Replace the system board.
3.
605-Diskette Drive Error
Probable Cause
Mismatch in drive
type
Recommended
Action
Run Computer
Setup.
1780-Primary Hard Drive 0 Failure
Probable CauseRecommended Action
Disk 0 failed to
respond
Run Computer Checkup
1.
(TEST).
Replace the hard drive.
2.
Hard drive format
error
1782-Hard Drive Controller
Probable
Cause
Hard drive
controller
failure
Recommended Action
1.
2.
Run Computer Checkup
1.
(TEST).
Replace the hard drive.
2.
Run Computer Setup.
Replace the hard drive.
Page 22
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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:
■ Computer Setup
■ 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 select to save the device list to a file and to
print or to save the log of errors. Run the View System Information (INSPECT) utility
and select to print or to save that information. Have the files or the printed
information available when you call for support.
Computer Setup
The Computer Setup utility resides in a hidden partition on the hard drive. It gives
you a snapshot of the computer's hardware andconfiguration, aids in troubleshooting,
and allows you to set custom features.
Access Computer Setup when you want to:
● Modify settings for audio, storage, communications, and input devices
● Get an overall picture of the computer's hardware configuration
● Verify configuration parameters in determining problems
● Configure options
● Update time, date, or password information
To run Computer Setup:
Go to the Compaq Utilities menu and select the Computer Setup option. Follow the on-screen
instructions to complete your chosen task.
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.
If the list is incorrect,
ensure that any new
NOTE:
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.
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:
SystemMemory
ROMAudio
KeyboardOperating system
System portsSystem files
System storageWindows 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.
Page 23
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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
IMPORTANT:
diskette drive and that there are no PC
Cards in the PC slots.
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.
Page 24
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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.
Retest the system after completing each
IMPORTANT:
For the removal and replacement of a particular subassembly, see Removal and Replacement
Procedures.
Select error codes by number or type:
step. If the problem has been resolved,
do not proceed with the remaining
steps.
101 through 114Processor Test
200 through 215Memory Test
300 through 304Keyboard Test
401 through 403Parallel Printer Test
600 through 699Diskette Drive Test
1101Serial Test
1701 through 1736Hard Drive Test
501 through 516Video Test
2402 through 2456
2458 through 2480
3206Audio Test
8601 through 8602Touch Pad Pointing Device Test
3301 through 3305CD or DVD Test
6600 through 6623
Processor Test Error Codes
Error
CodeDescriptionRecommended Action
101-xxCPU test failedReplace the processor and retest.
102-xxCoprocessor or Weitek Error1. Run the Configuration and Diagnostics
Utilities.
2. Replace the processor board and retest.
103-xxDMA page registers test failedReplace the system board and retest.
104-xxInterrupt controller master test failed
105-xxPort 61 error
106-xxKeyboard controller self-test failed
107-xxCMOS RAM test failed
108-xxCMOS interrupt test failed
109-xxCMOS clock test failed
110-xxProgrammable timer load data test
failed
113-xxProtected mode test failed
114-01Speaker test failed1. Check system configuration.
2. Verify cable connections to speaker.
3. Replace the system board and retest.
Memory Test Error Codes
200-xxMemory machine ID test failed1. Flash the system ROM and retest.
202-xxMemory system ROM checksum failed
203-xxWrite/Read test failed1. Remove the memory module and retest.
204-xxAddress test failed
211-xxRandom pattern test failed
214-xxNoise test failed
215-xxRandom address test failed
Keyboard Test Error Codes
300-xxFailed ID Test1. Check the keyboard connection. If
301-xxFailed Selftest/Interface Test
302-xxFailed Individual Key Test
304-xxFailed Keyboard Repeat Test
2. Replace the system board and retest.
2. Install a new memory module and
retest.
disconnected, turn off the computer and
connect the keyboard.
2. Replace the keyboard and retest.
3. Replace the system board and retest.
Parallel Printer Test Error Codes
401-xxPrinter failed or not connected1. Connect the printer.
2. Check power to the printer.
402-xxFailed Port Test
403-xxPrinter pattern test failed
Diskette Drive Test
600-xx
601-xxDiskette format failed
602-xxDiskette read test failed
603-xx
604-xxDiskette random read test failed
605-xxDiskette ID media failed
606-xxDiskette speed test failed
Diskette ID drive types test
failed
Diskette write, read, compare test
failed
3. Install the loop-back connector and
retest.
4. Check port and IRQ configuration.
5. Replace the system board and retest.
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.
609-xxDiskette reset controller test failed
610-xxDiskette change line test failed
697-xxDiskette type error
698-xxDiskette drive speed not within limits
Diskette drive/media ID error1. Replace media.
699-xx
Back to top
2. Run the Configuration and Diagnostics
Utilities.
Page 25
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Diagnostic Error Codes (continued)
101 through 114Processor Test
200 through 215Memory Test
300 through 304Keyboard Test
401 through 403Parallel Printer Test
600 through 699Diskette Drive Test
1101Serial Test
1701 through 1736Hard Drive Test
501 through 516Video Test
2402 through 2456
2458 through 2480
3206Audio Test
8601 through 8602Touch Pad Pointing Device Test
3301 through 3305CD or DVD Test
6600 through 6623
Serial Test Error Codes
1101-xxSerial port test failed1. Check port configuration
2. Replace the system board and retest.
Hard Drive Test Error Codes
1701-xxHard drive format test failed1. Run the Configuration and Diagnostics
1702-xxHard drive read test failed
1703-xxHard drive write/read/compare test failed
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
1717-xxHard drive ECC* test failed
1719-xxHard drive power mode test failed
1724-xxNetwork preparation test failed
Utilities and verify drive type.
2. Verify that all secondary drives have
secondary drive capability.
3. Replace the hard drive and retest.
4. Replace the system board and retest.
1736-xxDrive monitoring test failed
* ECC = Error Correction Code
Video Test Error Codes
501-xxVideo controller test failedThe following apply to error codes 501-xx
502-xxVideo memory test failed
503-xxVideo attribute test failed
504-xxVideo character set test failed
505-xx
506-xx
507-xxVideo 40 × 25 mode test failed
508-xx
509-xx
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
through 516-xx:
1. Disconnect external monitor and test with
internal LCD display.
2. Replace the display assembly and retest.
3. Replace the system board and retest.
510-xxVideo 640 × 200 mode test failed
511-xxVideo screen memory page test failed
512-xxVideo gray scale test failed
514-xxVideo white screen test failed
516-xxVideo noise pattern test failed
2402-xxVideo memory test failedThe following steps apply to error codes 24022403-xxVideo attribute test failed
2404-xxVideo character set test failed
2405-xx
2406-xx
2408-xx
2409-xx
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
xx through 2456-xx:
1. Run the Configuration and Diagnostics
Utilities.
2. Replace the display assembly and retest.
3. Replace the system board and retest.
2410-xxVideo 640 × 200 mode test failed
2411-xxVideo screen memory page test failed
2412-xxVideo gray scale test failed
2414-xxVideo white screen test failed
2416-xxVideo noise pattern test failed
2418-xxECG/VGC memory test failed
2419-xxECG/VGC ROM checksum test failed1. Run the Configuration and Diagnostics
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
Utilities.
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 testThe following step applies to error codes 24582468-xxAdvanced VGA DAC test
2477-xxAdvanced VGA data path test
2478-xxAdvanced VGA BitBLT test
2480-xxAdvanced VGA LineDraw test
Audio Test Error Codes
3206-xxAudio System Internal ErrorReplace the system board and retest.
TouchPad/Pointing Device Interface Test Error Codes
xx through 2480-xx:
Replace the system board and retest.
8601-xxMouse test failed1. Replace the TouchPad and retest.
8602-xxInterface test failed
CD or DVD Drive Test Error Codes
3301-xxCD / DVD drive read test failed1. Replace the CD / DVD and retest.
3305-xxCD / DVD drive seek test failed
6600-xxID test failed
6605-xxRead test failed
6608-xxController test failed
6623-xxRandom read test failed
2. Replace the system board and retest.
2. Verify that the speakers are connected.
3. Verify that drivers are loaded and properly
installed.
4. Replace the CD / DVD drive and retest.
5. Replace the system board and retest.
Page 26
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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 these
topics:
AudioPowerHard drive
MemoryDiskette/Diskette driveKeyboard/Numeric keypad
Battery/Battery gaugePrinterHardware Installation
PC Card Display
CD or DVD driveTouch Pad
Since symptoms can appear to 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.
Page 27
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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.
AudioBattery packBattery gaugeCD/DVD driveDiskette/diskette driveDisplay
Hard drive
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.
Battery Pack and Battery Gauge Problems (see also Power Problems)
ProblemProbable CauseSolution(s)
Computer won't turn on
when battery pack is
inserted and power cord
is unplugged.
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 pack is discharged.1. Connect the computer to an external power source and
charge the battery pack.
2. Replace the battery pack with a fully charged battery
pack.
Battery connectors may be bent
or broken.
Battery charge is low.Immediately save any open file(s). Then either:
Volume is turned down too low.Adjust the volume.
Check the battery connectors on the system board to
verify they are evenly spaced and that they are not bent
or broken.
● Connect the computer to an external power source
to charge the battery pack, or
● Turn off the computer or initiate Hibernation until
you can find another power source or charge the
battery pack.
Battery LED icon doesn't
light and battery pack
won't fast charge.
You have to set the date
and time every time you
turn on the computer.
Battery pack is warm to
the touch after charging.
Battery pack operating
time is far less than the
documented average
operating time.
Battery pack is already charged.No action is necessary.
Battery pack was exposed to
temperature extremes.
Battery pack is at end of its life.Replace battery pack.
RTC battery is dead.Replace the RTC battery.
Normal warming has occurred due
to charging.
Power management is turned off
or disabled.
An external device or PC Card is
draining the battery.
Battery pack has partially selfdischarged.
Allow time for the battery pack to return to room
temperature.
No action is required.
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.
Battery pack is being exposed to
high temperatures or extremely
cold temperatures.
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.
CD/DVD Drive Problems
ProblemProbable CauseSolution(s)
CD / DVD drive cannot
read a compact disc.
Compact disc is upside down or is
improperly inserted in the CD / DVD
drive.
Trying to read a CD Plus or
Pregap/Track 0 type disc with a 24x CDROM drive.
Open the CD / DVD loading tray, lay the compact
disc in it (label side up), then close the tray.
None - these types of CD are unreadable with this
drive.
Diskette and Diskette Drive Problems
ProblemProbable CauseSolution(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
write-protected.
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 the
Compaq Diagnostics diskette.
Diskette is not formatted.Format the diskette. At the system
Cannot boot
from diskette.
Bootable diskette is not in
drive A.
Diskette Boot has incorrect
setting in Computer Setup.
prompt, enter
FORMAT A:
Put the bootable diskette in drive A.
Run Computer Setup and set
diskette as first to boot.
Page 28
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
You can perform a self-test on an external VGA color or monochrome monitor as follows:
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.
ProblemProbable CauseSolution(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 (- ).
Screen is blank.
Display is blank and the
Suspend icon is flashing.
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.
See other entries in this table if these
adjustments do not work.
Computer screen is in direct
light.
Screen save was initiated by
Power Management due to
lack of user activity.
Display has overheated.If computer is in direct sunlight, move it and
System is in Suspend mode. Press any key or touch the Touch Pad.
Display function was
switched to the external
monitor.
Using 1024 × 768 or higher
resolution on external
monitor and have toggled
back to internal display,
which supports up to 800 ×
600.
Tilt display or move computer.
Press any key or touch the Touch Pad.
allow it to cool off.
Use Fn + F2 to switch between LCD or CRT.
Restart the computer.
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).
Ghost bars extending from
graphics on the display.
A single line, small group of
lines, or block appears on the
display panel. This failure
occurs in only a section of the
display panel.
Improper display cable
connections.
Defective display cable.Replace the display assembly.
Defective inverter board.Replace the display assembly.
Defective system board.Replace the system board.
Common characteristic of
STN displays.
Defective display panel.Replace the display assembly.
Reseat the display cable to the following until
the problem is solved:
1. System board
2. Display assembly
1. Change the background colors.
2. Adjust the Contrast of the display by using
Fn + F5 (¯ ) or Fn + F6 (- ).
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.*
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 (- ).*
Improper backlight or
display cable connections
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.
Defective inverter board.Replace the display assembly.
Defective display cable.Replace the display assembly.
Replace the display assembly.
1. Reseat the display cable to the system
board.
2. 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 turn on at
the front of the computer.
Improper display cable
connections.
Defective inverter board.Replace the display assembly.
Defective display cable.Replace the display assembly.
Defective system board.Replace the system board.
1. Reseat the display cable to the system
board.
2. Replace the display assembly.
Hard Drive Problems
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.
ProblemProbable CauseSolution(s)
Reading hard drive takes
an unusually long time
after restarting the
computer.
Hard drive error occurs.Hard drive has bad sectors or has failed.Run Computer Checkup.
Hard drive does not work. Hard drive is not seated properly.Turn off and unplug the computer, remove the
System entered Hibernation due to low
battery condition and is now exiting from it.
Give the system time to restore the previously
saved data to its exact state before Hibernation.
battery pack, and remove and then reinstall the
hard drive.
Hardware Installation Problems
ProblemProbable CauseSolutions(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.
Device is not seated properly.Turn off the computer and reinsert the device.
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.
Keyboard/Numeric Keypad Problems
ProblemProbable CauseSolution(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.
Memory Problems
ProblemProbable CauseSolution(s)
Memory count during PowerOn Self-Test (POST) is
incorrect.
"Out of Memory" message is
displayed on the screen or
insufficient memory
error occurs during operation.
Optional memory expansion card
is installed incorrectly, is incompatible with
the computer, or is defective.
System ran out of memory for the
application.
Too many TSR (terminate-and stayresident) applications are running.
Ensure that the optional memory
expansion card is installed correctly.
1. Check the application documentation
for memory requirements.
2. Install additional memory.
Remove from memory any TSR
applications that you do not need.
Page 29
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
When turned
on, the
computer does
not beep when a
PC Card is
inserted.
Card is not inserted properly.
PC Card beeps are disabled.
Speaker is turned off or volume is
Ensure the card is inserted in the
correct orientation.
Double-click the PC Card icon in the
Control Panel, click the Global Settings tab, the enable PC Card
sound effects.
Press volume buttons to turn the
PC Card
modem, fax, or
turned down.
speaker on, then increase the
volume.
PC Card drivers are not installed.Double click the Add New
Hardware icon in the Control Panel
for installation instructions.
If PC Card or drivers are not
compatible with Windows, install
drivers and use the PC Card in MSDOS mode.
Card or card driver is not
supported.
Contact your Compaq authorized
service provider for a list of PC Cards
tested successfully in Compaq PC
Card platforms.
Card is not fully inserted into the
slot or is not inserted properly.
Ensure the card is inserted in the
correct orientation.
network card
does not work.
PC Card modem
or fax card does
not work.
Modem network
PC Card does
not work.
Memory or
Telephone cord is not plugged in all
the way.
Necessary drivers are not installed
Check and secure telephone
connection.
Install drivers.
(turned on).
You are trying to access the card
See
Specifications to verify COM port.
using the wrong COM port.
The card conflicts with a serial
See Specifications to verify address.
device.
The card is not supported.Use supported cards only.
Network driver is not installed or is
Install driver.
not set up properly.
Telephone cord is not properly
Verify telephone connection.
connected.
SRAM and flash memory cards
Install driver.
storage card
does not work.
require the memory card driver
to be loaded (turned on).
Flash memory cards require the
Microsoft FlashFile System to
be loaded.
Hard drives on flash mass storage
cards require the PC Card ATA
driver to be loaded.
You are trying to access the hard
drive card using the wrong drive
Double-click My Computer to verify
the drive letter assigned to the card.
letter.
The card is not supported.Contact your Compaq authorized
service provider for a list of PC Cards
tested successfully in Compaq PC
Card platforms.
Power Problems (see also Battery and Battery Gauge Problems)
ProblemProbable CauseSolution(s)
Computer won't turn
on and battery pack
is not inserted.
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.
Computer turned off
while it was left
unattended and the
power icon is off.
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 after
Turn on the computer.
a preset timeout.
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.
ProblemProbable CauseSolution(s)
Printer will
not turn on.
Printer will
not print.
The signal cable may not be
connected properly, or the
printer is unplugged.
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
Ensure that the signal cable is 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.
network is not connected to the
network.
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.
Printer
prints
garbled
information.
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.
Touch Pad/Pointing Device Problems
ProblemCauseSolution(s)
Touch Pad or
Incorrect or no device driver is
Install the device driver and add to
mouse does not
work.
External mouse
does not work.
Touch Pad or
mouse does not
work even though
the device is
enabled in
Windows.
installed.
The device driver is not installed in
Windows.
Mouse is not securely connected or
is connected to an incorrect external
connector.
Mouse is not enabled.
the AUTOEXEC.BAT file or
CONFIG.SYS file.
Install the Touch Pad/mouse driver
in Windows.
Ensure that the mouse is securely
connected to the appropriate
external connector.
1. Enter MOUSE at the system
prompt to activate the mouse device
driver.
2. Add a line in the AUTOEXEC.BAT
file to automatically activate the
mouse device driver each time
computer is turned on or restarted.
Cursor skips or
moves abnormally
when using the
Touch Pad.
Cable not properly seated in Touch
Reseat cable.
Pad board.
Defective Touch Pad board.Replace Touch Pad board.
Defective system board.Replace system board.
Device driver is not correctly
installed in Windows.
Install the appropriate device driver
in Windows.
The Touch Pad needs to be cleaned.Clean the Touch Pad with a cloth
dampened with alcohol or an
ammonia-based glass cleaner. Wipe
up liquid with a dry cloth.
Page 30
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Illustrated Parts Catalog
Maintenance & Service Guide
Presario 1660 Model
Pin Assignments|Battery Pack Operations
System Unit
Boards
Display
Assembly
Mass Storage
Devices
Miscellaneous
Cable Kit
External
Cables
Miscellaneous
Hardware and
Plastics Kits
Miscellaneous
Parts
To obtain the description and spare part number of an item,
position the mouse cursor over the item for a few seconds.
Documentation
and Software
Page 31
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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
External
Cables
Miscellaneous
Hardware and
Plastics Kit
Miscellaneous
Parts
To obtain the description and spare part number of an item, position the
mouse cursor over the item for a few seconds.
Not shown: 128-MB SODIMM Memory 388646-001
Documentation
and Software
Page 32
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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
Exteranl
Cables
Miscellaneous
Hardware and
Plastics Kit
Miscellaneous
Parts
To obtain the description and spare part number of an item, position the
mouse cursor over the item for a few seconds.
Documentation
and Software
Page 33
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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
Assembly
Keyboard and
Heatspreader
Processor
Hard Drive
Upper CPU
Cover
DVD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Speaker
Report the computer serial number to Compaq when
requesting information or ordering spare parts.
Assembly
Diskette Drive
Fan Assembly
System Board
Memory
Module
Page 34
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
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
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, then degrade in the internal layers, reducing its life expectancy.
Networks built into many integrated circuits provide some protection, but in
many cases, the discharge contains enough power to alter device parameters
or melt silicon junctions.
Generating Static
The table shows how different activities generate static electricity and at
different electrostatic voltage levels.
Typical Electrostatic Voltages
Relative Humidity
Event10%40%55%
Walking across carpet35,000 V 15,000 V7,500 V
Walking across vinyl floor12,000 V5,000 V3,000 V
Motions of bench worker6,000 V800 V400 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 21,000 V11,000 V 5,000 V
NOTE: 700 volts can degrade
2,000 V700 V400 V
11,500 V4,000 V2,000 V
14,500 V5,000 V3,500 V
26,000 V20,000 V7,000 V
a product.
Return to Removal & Replacement Procedures
Page 35
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
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 reassembly 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 all screws removed during disassembly be kept
with the part that was removed, then returned to their proper locations.
As each subassembly is removed from the computer,
IMPORTANT:
it should be placed away from the work area to
prevent damage.
Return to Removal & Replacement Procedures
Page 36
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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 unit are ribbon cables. Cables must be handled with
extreme care to avoid damage. Apply only the tension required to seat or unseat the
cables during insertion or removal from the connector. Handle cables by the
connector whenever possible. In all cases, avoid bending, twisting, or tearing the
cables, and ensure that the cables are routed in such a way that they cannot be
caught or snagged by parts being removed or replaced.
Cables
Use the following precautions when handling cables to avoid damage to the cable or
computer:
● Always handle cables by their connectors.
● Avoid bending, twisting, or pulling on the cables.
● Apply minimum required force when seating or unseating the cables from their
connectors.
● Place the cables in such a manner 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
The ribbon cable position for the
hard drive.
DVD drive.
The ribbon cable position for the
The cable position for the
speaker assembly.
diskette drive.
Plastic Parts
Plastic parts can be damaged by the use of excessive force during disassembly and
reassembly. When handling the plastic parts, use care. Apply pressure only at the
points designated in the maintenance instructions.
Back to Top of Page
Return to Removal & Replacement Procedures
Page 37
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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 several cable
connections on the system board. To
remove a ZIF cable from its connector,
pull both ends of the ZIF cable guide clasp
out of the sleeve about 0.05 - 0.1" (1 - 2
mm) , then gently slide the cable out .
CAUTION: A ZIF connector and its
attached cable can be easily
damaged. Never pull or twist on the
cable while it is connected.
CAUTION: Ensure that cables are
replaced in their proper location.
Improper cable placement can
damage the computer.
Back to
Cables and Connectors.
Page 38
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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 hard drive.
Back to
Cables and
Connectors.
Page 39
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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
DVD drive.
Back to
Cables and Connectors.
Page 40
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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.
Page 41
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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
Connectors.
Cables and
Page 42
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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
Assembly
Keyboard and
heatspreader
Before removing or replacing any components, the
following procedures must be completed:
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 1660
Processor
Hard Drives
Upper CPU
Cover
DVD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Speaker
Assembly
Diskette Drive
Fan Assembly
NOTE:
Model Portable Computers into the battery
compartment. 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 1660 Model Portable
Computers have 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
System Board
Memory
Module
please keep respective screws with their associated
sub-assembly.
Page 43
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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
Assembly
Keyboard and
Heatspreader
To remove
the battery
pack,
complete the
following
steps:
1. Slide the
battery pack
compartment
door down
and remove
it from the
battery pack.
Next Step
Processor
Hard Drives
Upper CPU
Cover
DVD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Speaker
Assembly
Diskette Drive
Fan Assembly
System Board
Memory
Module
Page 44
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
2. Pull down the
battery pack tab and
slide the battery pack
out from the
chassis.
To replace the battery
pack, reverse the
previous steps.
Return to Removal &
Replacement
Procedures
Page 45
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Palmrest Assembly
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Assembly
Keyboard and
Heatspreader
Processor
The
Palmrest
Assembly
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
Hard Drives
Upper CPU
Cover
DVD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Speaker
Assembly
Diskette Drive
Fan Assembly
the interior
components.
To remove
the Palmrest
Assembly,
complete
the following
steps:
Prepare
1.
the
computer
for
disassembly.
System Board
Memory
Module
2. Close the
computer
and turn it
upside
down.
3. Remove
seven
screws from
the bottom
of the
computer.
Next Step
Page 46
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Palmrest Assembly (continued)
4. Turn the computer over
(right side up) and open the
unit.
5. Lift up front end of the
Palmrest Assembly and place it
upside down on the keyboard.
Next step
Page 47
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Palmrest Assembly (continued)
6. Disconnect the flex cable from the
LIF connector on the palmrest cover.
End of procedure.
CAUTION: When replacing the
Palmrest Assembly, ensure that
the cable is fully inserted into
the LIF connector on the system
board. If the metal end should
come in contact with the
keyboard, damage may occur to
the computer.
To replace the Palmrest Assembly,
reverse the previous steps.
When replacing the palm rest
NOTE:
Return to Removal & Replacement
Procedures
cover, ensure the cable is
properly routed through the
slot on the Upper CPU cover.
Page 48
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Keyboard and Heatspreader
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Assembly
Keyboard and
heatspreader
The
keyboard
and
heatspreader
are best
removed
together.
Prepare
1.
the
computer for
disassembly.
2. Remove
the palmrest
assembly.
Processor
Hard Drives
Upper CPU
Cover
DVD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Speaker
Assembly
Diskette Drive
3. Lift up the
front of the
keyboard
and place
the keyboard
upside-down
in the
palmrest
cavity.
Next Step
Fan Assembly
System Board
Memory
Module
Page 49
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Keyboard and Heatspreader
(continued)
4. Remove the four
screws from the
heatspreader and lift it
out of the chassis.
NOTE
The keyboard may
be placed upsidedown in the palmrest
socket while
removing the
heatspreader. In this
picture, the keyboard
is left out for clarity.
Next step
Page 50
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Keyboard and Heatspreader
(continued)
5. Disconnect the flex cable
from the ZIF connector on
the system board by pulling
out the lip of the cable lock
about 1 or 2 mm at each
end, then removing the
cable.
To replace the
keyboard and
heatspreader, reverse
the previous steps.
Return to Removal &
Replacement
Procedures
Page 51
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Processor
To remove the
processor,
complete the
following steps:
Electrostatic
Discharge
Service
Consideration
Cables and
Connectors
Preparing the
Prepare the
1.
computer for
disassembly.
2. Remove the
palmrest
assembly.
3. Remove the
keyboard and
heatspreader.
4. Rock the
processor back
and forth just a
little until it
comes out of
the processor
chassis slot.
Computer for
Disassembly
Battery Pack
Palmrest
Assembly
Keyboard and
Heatspreader
Processor
Hard Drives
Upper CPU
Cover
DVD Drive
Battery
To reinsert the
processor:
Align the screw
holes (on the
processor)
nearest the
speakers with the
corresponding
screw sockets on
the system board,
then push the
processor in
carefully but
Charger
Board
Modem
Display Panel
Assembly
Speaker
Assembly
Diskette
Drive
Fan Assembly
System
Board
Memory
Module
firmly.
CAUTION:
If the
processor
is not
correctly
aligned
with the
socket,
the
connectors
on either
the
processor
or the
system
board will
be bent
out of
alignment.
The
processor
or board
will then
be
destroyed,
and will
need to be
replaced.
Page 52
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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
Assembly
Keyboard and
To remove
the hard
drive,
complete the
following
steps:
1. Prepare
computer
the
for
disassembly.
2. Remove
the Palmrest
Assembly.
Heatspreader
Processor
Hard Drives
Upper CPU
Cover
DVD Drive
Battery
Charger
Board
Modem
Display Panel
Assembly
Speaker
3. Remove
the keyboard
and
heatspreader.
4. Remove
two screws
from the hard
drive
mounting
bracket and
lift up the
hard drive.
Next Step
Assembly
Diskette
Drive
Fan Assembly
System
Board
Memory
Module
Page 53
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Hard Drive (continued)
5. Disconnect the hard
drive data cable from
the hard drive and
remove the hard drive
from the unit.
Removing the mounting
bracket
Page 54
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Hard Drive (continued)
To remove the hard drive
mounting bracket, remove
the screw from each
corner.
To replace the hard drive
and hard drive mounting
bracket, reverse the
previous steps.
Return to Removal &
Replacement
Procedures
Page 55
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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
To remove
the Upper
CPU cover
complete the
following
steps:
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Assembly
Keyboard and
Heatspreader
Processor
Hard Drives
1. Prepare
computer
the
for
disassembly.
2. Remove
the palmrest
assembly.
3. Remove
the keyboard
and
heatspreader.
4. Remove
the hard
Upper CPU
Cover
DVD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Speaker
Assembly
Diskette Drive
Fan Assembly
System Board
drive.
5. Remove
the display
panel
assembly.
6. Remove four
screws holding
the cover to the
chassis.
7. Lift the Upper
CPU Cover off
the chassis.
Memory
Module
To replace the
Upper CPU
Cover, reverse
the previous
steps.
Page 56
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the DVD Drive
Electrostatic
Discharge
Service
Consideration
To remove
the DVD
drive,
complete the
following
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Assembly
Keyboard and
Heatspreader
Processor
Hard Drives
Upper CPU
Cover
steps:
1. Prepare
computer
the
for
disassembly.
If a CD or
DVD disc is
jammed in
the drive,
remove it
manually.
2. Remove
the Palmrest
Assembly.
DVD Drive
Battery
Charger
Board
Modem
Display Panel
Assembly
Speaker
Assembly
Diskette
Drive
Fan Assembly
System
Board
3. Remove
the keyboard
and
heatspreader.
4. Remove
the upper
CPU cover.
5. Remove
the screw at
the back end
of the DVD
drive near
the edge of
the system
Memory
Module
board.
Next Step
Page 57
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the DVD Drive (continued)
6. Disconnect the cable
and push the DVD drive
through the gap in the
chassis.
To replace the DVD
drive, reverse the
previous steps.
Return to Removal &
Replacement
Procedures
Page 58
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Battery Charger Board
To remove the
battery charger
board, complete
the following
steps:
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
1. Prepare the
computer for
disassembly.
2. Remove the
Palmrest
Assembly.
3. Remove the
keyboard and
heatspreader.
4. Remove the
hard drive.
5. Remove the
Battery Pack
Palmrest
Assembly
Keyboard and
Heatspreader
Processor
Hard Drives
Upper CPU
Cover
DVD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
screw from the
middle of the
battery charger
board.
6. Unplug the
battery charger
board from the
connector on
the system
board, and lift it
out of the
chassis.
To replace the
battery charger
board, reverse
the previous
steps.
Speaker
Assembly
Diskette Drive
Fan Assembly
System Board
Memory
Module
When
replacing
the
battery
charger
board,
ensure
the pins
are
aligned
NOTE:
with the
sockets
on the
system
board
connector
before
pressing
the board
in place.
Page 59
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Modem
To remove
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Assembly
Keyboard and
Heatspreader
the modem,
complete the
following
steps:
1. Prepare
computer
the
for
disassembly.
2. Remove
the Palmrest
Assembly.
3. Remove
the keyboard
Processor
Hard Drives
Upper CPU
Cover
DVD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Speaker
Assembly
Diskette Drive
and
heatspreader.
4. Remove
the two
screws
securing the
modem to
the system
board.
5. Pull the
modem off
the connector
on the lefthand side of
Fan Assembly
System Board
Memory
Module
the system
board.
Next Step
Page 60
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Modem (continued)
6. Disconnect the modem
cable from the modem.
To replace the modem,
reverse the previous
steps.
NOTE
The system board
connector for the
hard drive cable is
underneath the
modem board. If you
remove the hard
drive and the
modem, be sure to
replace the hard
drive cable before the
modem.
Return to Removal &
Replacement
Procedures
Page 61
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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
Assembly
Keyboard and
Heatspreader
To remove
the display
panel
assembly,
complete the
following
steps:
Prepare
1.
the computer
for
disassembly.
2. Remove
the Palmrest
Assembly.
Processor
Hard Drives
Upper CPU
Cover
DVD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Speaker
Assembly
Diskette Drive
3. Remove
the keyboard
and
heatspreader.
4. Remove
the modem.
5. Pull up the
hinge covers
and carefully
pry the
covers off the
chassis.
Fan Assembly
System Board
Memory
Module
Next Step
Page 62
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Display Panel Assembly
(continued)
6. Remove the flex
cable and end cap from
the connector on the
system board .
7. Very carefully pry the
LVDS connector cable
guide out of the metal
sleeve
needle, toothpick or
other sharp object in
the small holes (labeled
).
8. Slide the cable out of
the connector cable
guide.
Next Step
, using a
Page 63
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Display Panel Assembly
(continued)
9. Disconnect the
backlight cable
(attached to the display
panel assembly) from
the connector on the
system board.
Next Step
Page 64
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Display Panel Assembly
(continued)
10. Support the back
of the display panel
assembly and remove
two screws from each
of the display panel
hinges.
Next Step
Page 65
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Display Panel Assembly
(continued)
11. 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 steps.
When removing
the display panel
assembly,
NOTE:
observe the
display panel
assembly flex
cable routing and
position.
Return to Removal &
Replacement
Procedures
Page 66
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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
To remove
the speaker
assembly,
complete the
following
steps:
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Assembly
Keyboard and
Heatspreader
Processor
Hard Drives
1. Prepare
computer
the
for
disassembly.
2. Remove
the palmrest
assembly.
3. Remove
the keyboard
and
heatspreader.
4. Remove
the hard
Upper CPU
Cover
DVD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Speaker
Assembly
Diskette Drive
Fan Assembly
System Board
drive.
5. Remove
the charger
board.
6. Disconnect
the speaker
cables from
the system
board and
remove the
speaker
assembly
from the
chassis.
Memory
Module
To replace
the speaker
assembly,
reverse the
previous
procedures.
Page 67
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Diskette Drive
To remove
the diskette
drive,
complete the
following
Electrostatic
Discharge
Service
Consideration
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Assembly
Keyboard and
steps:
Prepare
1.
the computer
for
disassembly.
2. Remove
the palmrest
assembly.
3. Remove
the keyboard
and
heatspreader.
Heatspreader
Processor
Hard Drives
Upper CPU
Cover
DVD Drive
Battery
Charger
Board
Modem
Display Panel
Assembly
Speaker
Assembly
Diskette
4. Remove
the hard
drive.
5. Remove
the Upper
CPU cover.
6. Remove
the charger
board.
7. Remove
the speakers.
8. Disconnect
the diskette
drive data
Drive
Fan Assembly
System
Board
Memory
Module
cable from the
system board
by pulling out
the cable lock
lip about 1 or 2
mm at each
end, then
removing the
cable .
Next Step
Page 68
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Diskette Drive (continued)
9. Remove the screw and lift the
diskette drive up and out of the chassis.
To replace the diskette drive, reverse the
previous steps.
When replacing the
diskette drive, ensure
the diskette drive eject
NOTE:
lever is properly
inserted in the chassis
slot.
Return to Removal & Replacement
Procedures
Page 69
Maintenance & Service Guide
Presario 1660 Model
MSG Index | 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
following
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
steps:
1. Prepare
computer
the
for
disassembly.
2. Remove
the palmrest
assembly.
3. Remove
the keyboard
and
heatspreader.
Battery Pack
Palmrest
Assembly
Keyboard and
Heatspreader
Processor
Hard Drives
Upper CPU
Cover
DVD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
4. Remove
the display
panel
assembly.
5. Remove
the hard
drive.
6. Remove
the Upper
CPU cover.
7. Unplug the
fan cable and
lift the fan
assembly
from the
Speaker
Assembly
Diskette Drive
Fan Assembly
System Board
Memory
Module
chassis slot.
To replace the
fan assembly,
reverse the
previous steps.
Be sure
to insert
the fan
as shown
NOTE
in the
figure, to
prevent
damage
to the
cable.
Removing the
Fan Gasket
Page 70
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the System Board
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Assembly
Keyboard and
Heatspreader
To remove the system board, complete the following steps:
1. Prepare the
computer for disassembly.
2. Remove the palmrest assembly.
3. Remove the keyboard and heatspreader.
4. Remove the hard drive.
5. Remove the Upper CPU Cover.
6. Remove the DVD drive.
7. Remove the battery charger board.
Processor
Hard Drive
Upper CPU
Cover
DVD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Speaker
Assembly
Diskette Drive
8. Remove the modem.
9. Remove the display panel assembly.
10. Disconnect the speaker assembly cables.
11. Remove the diskette drive.
12. Remove the fan.
13. Remove the processor.
Next Step
Fan Assembly
System Board
Memory
Module
Page 71
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Fan Assembly (continued)
To remove the fan
gasket, pull the gasket
from the fan.
To replace the fan
assembly, reverse the
previous steps.
Return to Removal &
Replacement
Procedures
Page 72
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the System Board (continued)
14. Remove the two
long standoff nuts from
the system board.
Next Step
Page 73
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the System Board (continued)
15. Remove the four standoff screws
from the processor socket on the
system board, using a flat-bladed
screwdriver.
Next step
Page 74
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the System Board (continued)
16. Remove four screws
from the system board.
Next Step
Page 75
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the System Board (continued)
17. Remove two screws
from the DVD Drive
mounting rails and
remove the mounting
rails from the system
board.
Next Step
Page 76
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the System Board (continued)
Check that all cables have
IMPORTANT:
the system board before
continuing.
18. Tilt the system board up towards
the middle of the unit.
19. Hold in the PCMCIA eject lever
while carefully rotating the system
board clockwise in a horizontal plane
and manipulating it out of the chassis.
To replace the system board, reverse
the previous steps.
been disconnected from
Return to Removal & Replacement
Procedures
Page 77
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Memory Module
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Assembly
Keyboard and
Heatspreader
To remove
the memory
module,
complete
the following
steps:
Prepare
1.
the
computer
for
disassembly.
2. Close the
computer
and turn it
Processor
Hard Drives
DVD Drive
Battery
Charger Board
Modem
Display Panel
Assembly
Upper CPU
Cover
Speaker
Assembly
Diskette Drive
upside
down.
3. Remove
the screw
from the
memory
module door
and pull the
door off.
Next Step
Fan Assembly
System Board
Memory
Module
Page 78
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Removing the Memory Module (continued)
4. Pull the side levers to
release the memory
module, then unplug
the memory module
from the system board.
To replace the memory
module, reverse the
previous steps.
Return to Removal &
Replacement
Procedures
Page 79
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Specifications
This section covers the following specifications of Compaq Presario 1660 Model
Portable Computers:
Physical and environmentalSystem InterruptsSystem DMA
System I/O AddressSystem Memory CatalogDisplay
Diskette driveHard driveCD drive
DVD driveBattery pack
Physical and Environmental
Computer Specifications
Dimensions
Height
Depth
Width
U.S.Metric
1.97 in
12.32 in
10.12 in
4.95 cm
31.00 cm
25.40 cm
Weight
AC Power Requirements
Operating Voltage
Operating Current
Operating Frequency
Maximum Transient
Temperature
Operating
Nonoperating
Relative Humidity (noncondensing)
Operating
Nonoperating (tw = 38.7°C max)
Altitude
Operating
Nonoperating
Shock
7.37 lb3.33 kg
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
-4° to 140 °F
10 to 90%
5 to 95%
0 to 10,000 ft
0 to 30,000 ft
10° to 35 °C
-20° to 60 °C
10 to 90%
5 to 95%
0 to 3.15 km
0 to 9.14 km
Operating
Non operating
Vibration
Operating
Nonoperating
NOTE: Applicable product safety standards specify thermal limits for plastic surfaces. Compaq
Presario 1660 Model Portable Computers operate well within this range of temperatures.
10 G, 11 ms, half sine
240 G, 2 ms, half sine
0.5 G
1.5 G
System Interrupts
System Interrupts
Hardware IRQSystem Function
IRQ0System Timer
IRQ1Standard 101/102-Key or Microsoft Natural Keyboard
IRQ2Programmable interrupt controller
IRQ3Compaq Presario 56K-DF
IRQ4Communications Port (COM1)
IRQ5NeoMagic MagicWave 3DX Sound System
IRQ6Standard Floppy Disk Controller
IRQ7Printer Port (LPT1)
IRQ8System CMOS/real time clock
IRQ9Texas Instruments PCI-1211 CardBus Controller
IRQ9NeoMagic MagicMedia 256AV
IRQ9IRQ Holder for PCI Steering
IRQ9IRQ Holder for PCI Steering
IRQ11Intel 82371AB/EB PCI to USB Universal Host Controller
IRQ11NeoMagic MagicMedia 256AV Audio
IRQ11IRQ Holder for PCI Steering
IRQ12Synaptics PS/2 TouchPad
IRQ13Numeric data processor
IRQ14Primary IDE controller (dual fifo)
IRQ14Intel 82371AB/EB PCI Bus Master IDE Controller
IRQ15Secondary IDE controller (dual fifo)
IRQ15Intel 82371AB/EB PCI Bus Master IDE Controller
System DMA
Hardware
DMA
1
System DMA
System Function
NewMagic MagicWave 3DX Sound
System
2
NewMagic MagicWave 3DX Sound
System
3
4
5
free
Standard Floppy Disk Controller
Direct Memory Access Controller
Page 80
Maintenance & Service Guide
Presario 1660 Model
MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Specifications (continued)
Physical and environmentalSystem InterruptsSystem DMA
System I/O AddressSystem Memory CatalogDisplay
Diskette driveHard driveCD drive
DVD driveBattery pack
System I/O Address
System I/O Address
I/O Address (Hex)System Function (Shipping Configuration)
0000h-000FhDirect memory access controller
0010h-001FhIn use by unknown device
0020h-0021hProgrammable interrupt Controller
0022h-003FhIn use by unknown device
0040h-0043hSystem timer
0044h-005FhIn use by unknown device
0060h-0060hStandard 101/102-Key or Microsoft Natural Keyboard
0061h-0061hSystem speaker
0062h-0063hIn use by unknown device
0064h-0064hStandard 101/102-Key or Microsoft Natural Keyboard
0065h-006FhIn use by unknown device
0070h-0071hSystem CMOS/real time clock
0072h-0073hMotherboard resources
0074h-007FhIn use by unknown device
0080h-0080hMotherboard resources
0081h-008FhDirect memory controller
0090h-009FhIn use by unknown device
00A0h-00A1hProgrammable interrupt controller
00A2h-00BFhIn use by unknown device
00C0h-00DFhDirect memory access Controller
00E0h-00EBhIn use by unknown device
00ECh-00EFhMotherboard resources
00F0h-00FFhNumeric data processor
0120h-0121hNeoMagic MagicWave 3DX Sound System
0170h-0177hIntel 82371AB/EB PCI Bus Master IDE controller
0170h-0177hSecondary IDE controller (dual fifo)
01F0h-01F7hIntel 82371AB/EB PCI Bus Master IDE controller
0170h-0177hPrimary IDE controller (dual fifo)
0200h-0200hGameport Joystick
0220h-02FFhNeoMagic MagicWave 3DX Sound System
02F8h-02FFhCompaq Presario 56K-DF
0330h-0331hNeoMagic MagicWave 3DX Sound System
0376h-0376hIntel 82371AB/EB PCI Bus Master IDE controller
0376h-0376hSecondary IDE controller (dual fifo)
0378h-037FhPrinter Port (LPT1)
0388h-038FhNeoMagic MagicWave 3DX Sound System
03B0h-03BBhNeoMagic MagicMedia 256AV
03C0h-03DFhNeoMagic MagicMedia 256AV
03F0h-03F5hStandard Floppy Disk Controller
03F6h-03F6hIntel 82371AB/EB PCI Bus Master IDE controller
03F6h-03F6hPrimary IDE controller (dual fifo)
03F7h-03F7hStandard Floppy Disk Controller
03F8h-03FFhCommunications Port (COM1)
04D0h-04D1hMotherboard resources
0530h-0537hNeoMagic MagicWave 3DX Sound System
0CF8-0CFFhPCI bus
2180h-218FhMotherboard resources
8000h-803FhMotherboard resources
FCD0h-FCD7hPrimary IDE controller (dual fifo)
FCD0h-FCDFhIntel 82371AB/EB PCI Bus Master IDE Controller
FCD8h-FCDFhSecondary IDE controller (dual fifo)
FCE0h-FCFFhIntel 82371AB/EB PCI to USB Universal Host