1600-XL144, 1600-XL145, 1600-XL146, 1600-XL147, and 1600-XL150
Before You BeginProduct DescriptionParts Catalog
SpecificationsBattery OperationsPin Assignments
Removal SequenceTroubleshootingMSG Index
Notice
Preface
Contact
Compaq
Welcome to the Maintenance & Service Guide
(MSG) for the Compaq Presario 1800 Series
Portable Computers. This online guide is
designed to serve the needs of those who
repair Compaq products. The Notice contains
the copyright and trademark information. The
Preface shows symbol conventions, Technician
Notes and Serial Number locations on the unit.
This MSG will be periodically maintained and
updated online as needed.
For content comments or questions, contact
Tech Support..
To report a technical problem, contact your
Regional Support Center or IM Help Center.
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Before You BeginProduct DescriptionParts Catalog
SpecificationsBattery OperationsPin Assignments
Removal SequenceTroubleshootingMSG Index
Notice
Preface
Contact
Compaq
Before You Begin
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 1600 Series Registered U. S.
Patent and Trademark Office.
Microsoft, MS-DOS, and Windows are registered
trademarks of Microsoft Corporation.
Windows 98 and Windows 2000 are trademarks 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 1600 Series Portable Computer
First Edition (January 2000)
Compaq Computer Corporation
1600-XL144, 1600-XL145, 1600-XL146, 1600-XL147, and 1600-XL150
Before You BeginProduct DescriptionParts Catalog
SpecificationsBattery OperationsPin Assignments
Removal SequenceTroubleshootingMSG Index
Notice
Preface
Contact
Compaq
Before You Begin
Preface
This Maintenance and Service Guide is a troubleshooting guide that
can be used for reference when servicing the Compaq Presario 1800
Series Portable Computers.
Compaq Computer Corporation reserves the right to make changes to
the Compaq Presario 1800 Series Portable Computers without notice.
Symbols
The following words and symbols mark special messages throughout
this guide.
WARNING: Text set off in this manner indicates
that failure to follow directions in the warning
could result in bodily harm or loss of life.
CAUTION: Text set off in this manner indicates
that failure to follow directions could result in
damage to equipment or loss of data.
IMPORTANT:
Text set off in this manner presents commentary,
NOTE:
sidelights, or interesting points of information.
Text set off in this manner presents
clarifying information or specific
instructions.
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, you should
provide the computer serial number 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:
1600-XL144, 1600-XL145, 1600-XL146, 1600-XL147, and 1600-XL150
Before You BeginProduct DescriptionParts Catalog
SpecificationsBattery OperationsPin Assignments
Removal SequenceTroubleshootingMSG Index
System Unit
Boards
Display
Assembly
Mass Storage
Devices
Miscellaneous
Cable Kit
Miscellaneous
Hardware Kit
Miscellaneous
Plastics Kit
Miscellaneous
Parts Catalog
This section provides a breakdown of
spare parts and identifies the spare part
ordering number associated with each
item for Compaq Presario 1600 Series
Portable Computers.
1600-XL144, 1600-XL145, 1600-XL146, 1600-XL147, and 1600-XL150
Before You BeginProduct DescriptionParts Catalog
SpecificationsBattery OperationsPin Assignments
Removal SequenceTroubleshootingMSG Index
Increasing
battery
pack
operating
time
Conditioning
a battery
pack
Disposing of
a used
battery
pack
Battery Pack Operations
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 Temperatures
● Type and Number of Installed PC Cards
The power consumption requirements for PC
NOTE:
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
guidelines:
●Set the power conservation levels in the Power
Management utility to Maximum.
●Customize the timeout value to work more efficiently with
the applications. The length of battery life depends on the
values selected.
Maximizing the Energy Stored
To maximize the energy stored in the battery pack, follow these
guidelines:
●Condition the battery pack at least every 30 days to
improve overall battery performance.
●Keep a battery pack in the computer when using it with AC
power to supply the battery pack with a constant trickle
charge.
●Store the battery pack in a cool, dry place when not in use.
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Conditioning a Battery Pack
CAUTION: To avoid a loss of data, ensure that
all data is saved before discharging a battery
pack.
To condition a battery pack, complete the following steps:
1. Plug in the AC adapter and allow the battery to charge until
the battery charging status icon turns off. Your battery
gauge may show four bars (and Windows may report
100%) before the battery charging status icon turns off. Do
not unplug the AC adapter until the battery charging status
icon disappears.
2. Unplug the AC adapter and allow the battery to drain until
the computer reaches hibernation and turns itself off. Do
not plug in the AC adapter during this process or you
will need to restart with Step No. 1. You may use the
computer while the battery is draining.
3. Plug in the AC adapter and begin using the computer.
The table below shows the approximate battery pack charge
times.
Battery Charge Time
Li-ion Battery PackCharge Time
Computer On Line
Computer Off Line
4.5 hours
2:50 hrs
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Disposing 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
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damages the pack and makes it unusable, but
also exposes potentially harmful battery
components.
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Before You BeginProduct DescriptionParts Catalog
SpecificationsBattery OperationsPin Assignments
Removal SequenceTroubleshootingMSG Index
Parallel
and Serial
Connectors
Keyboard/
Mouse,
Modem,
and Game
Port
S-Video
and
Universal
Serial Bus
Monitor
and TV
Connector Pin Assignments
This section provides connector pin assignment
tables for Compaq Presario 1600 Series Portable
Computers. For additional information on
connectors, refer to the sections on Rear Connectors
and
QuikDock Connectors.
The signals in all tables of this
appendix are considered active
NOTE:
high unless otherwise indicated
by an asterisk (*).
Parallel Connector
Out
QuikDock
PinSignalPinSignal
1Strobe*10Acknowledge*
2Data Bit 011Busy
3Data Bit 112Paper Out
4Data Bit 213Select
5Data Bit 314Auto Linefeed*
6Data Bit 415Error*
7Data Bit 516Initialize Printer*
8Data Bit 617Select In*
9Data Bit 718-25Signal Ground
* = Active low
Serial Connector
ConnectorPin Signal
1
2
3
4
5
Carrier Detect
Receive Data
Transmit Data
Data Terminal
Ready
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6
7
8
9
Signal Ground
Data Set Ready
Ready to Send
Clear to Send
Ring Indicator
1600-XL144, 1600-XL145, 1600-XL146, 1600-XL147, and 1600-XL150
Before You BeginProduct DescriptionParts Catalog
SpecificationsBattery OperationsPin Assignments
Removal SequenceTroubleshootingMSG Index
Removal
Sequence
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
QuikDock
Battery Pack
Removal Sequence
This section explains the removal and
replacement procedures for the computer.
Serial Number Location
Palmrest Cover
with TouchPad
Keyboard
Status/Internet
Zone Cover
Internet
Button Board
Heatspreader
Modem
Hard Drive
DisqPlay
Module
Processor
Report the computer serial number to Compaq
when requesting information or ordering spare
parts. The serial number is located on the
underside of the computer.
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Before You BeginProduct DescriptionParts Catalog
SpecificationsBattery OperationsPin Assignments
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Models and
Features
Controls and
Lights
Internet
Zone
Buttons and
Lights
Front Bezel
Components
Left Side
Components
Right Side
Products Description
Power Management for Windows 98
The following power management features are available for
conserving AC power and extending battery operating time:
● Power Management Settings
● Low-Power Modes
● Battery Operating Life
● Servicing the Computer (Full Off Mode)
● Rebooting After a Lockup
● Recovering From a Loss of Electrical Power
Power Management Settings
Components
Bottom of
Unit
Rear
Connectors
QuikDock
Components
QuikDock
Connectors
Power
Management
for Windows
98
Differing patterns of computer use determine the level of power
management needed. These power management levels can be
initiated based on the amount of time passed since the last
system activity. System activity examples include keyboard
strokes or mouse movement, DVD/CD playback (while under
program control that monitors Standby), and modem use.
Power Schemes
You may select different settings or Power Schemes through
Power Management from the Control Panel. The default Power
Schemes are Home/Office Desk, Portable/Laptop, and
Always On. You can customize these settings by changing the
following options:
●System Standby: length of inactivity before the computer
goes into Standby mode
●Turn Off Monitor: length of inactivity before the screen
times out and goes blank
●Turn Off Hard Disks: length of inactivity before the hard
drive goes into low power mode
●The setting for the Hard Drive
IMPORTANT:
must be less than or equal to the
setting for the System.
●If the computer is on a network,
Compaq recommends System Standby be set to Never.
The following table shows the default settings for the each Power
Scheme.
Power Schemes
Always onAC PowerBattery Power
System Standby
Turn OFF Monitor
Turn OFF Hard Disks
Portable/LaptopAC PowerBattery Power
System Standby
Turn OFF Monitor
Turn OFF Hard Disks
Home/Office Desk AC PowerBattery Power
System Standby
Never
15 minutes
1 hour
Never
3 hours
15 minutes
20 minutes
5 minutes
2 minutes
3 minutes
15 minutes
Never
10 minutes
1 minute
Turn OFF Monitor
Turn OFF Hard Disks
15 minutes
30 minutes
2 minutes
10 minutes
Alarms
The computer can be set to alarm when the battery power level
is reduced and/or when it reaches a critical low level. It can also
be set to automatically enter a low-power mode when the
battery reaches a specific power level.
CAUTION: The settings on the Alarms tab have
been preset for the computer to run at its best.
Changing any of these settings could cause
the computer to function improperly. It is
recommended that these settings be left at
their default values.
AlarmDefault Alarm Action
Low Battery10%Notification: Text
Critical Battery 0%Notification: No Action
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Low-Power Modes
Alarms
Power Mode: No Action
Power Mode: Hibernation
Compaq Presario 1600 Series Computers have two levels of lowpower management: Hibernation and Standby .
Hibernation
Hibernation helps conserve battery life and protect the data. The
computer will automatically enter Hibernation mode when the
battery has little power left or when the computer (operating on
battery power) has been in Standby mode for more than one
hour. As the computer enters Hibernation, it automatically stores
the content of the computer memory to the hard drive before it
shuts down. When the computer comes out of hibernation, it
returns to its previous state.
Activate Hibernation mode by pressing the Power button once.
To restart the computer, press the Power button once. When
the computer enters or wakes from Hibernation mode, it displays
a Progress window.
Standby
Standby mode is a low-power mode, also referred to as Sleep
mode. Selecting Standby mode instead of turning off the
computer when finished allows the computer to wake up faster
than turning it completely off and saves power over the active
(On) mode.
Activate Sleep mode by pressing Fn+F4. Or, click Start, select
the Shut Down option, and click Standby.
CAUTION: While in Standby mode, the
computer will maintain system information and
open files. Unsaved information will be lost if
the computer is turned off prior to system wakeup, or if a power loss occurs while using the AC
adapter.
The following table shows the conditions and indicators for
entering and exiting the various power management modes,
Standby, Hibernation, and Off.
Power Management Modes
StandbyActivationDeactivation Indicators
ManualFn+F4 Key
combination
or click the
Press any
key.
Half-moon
icon
appears on
Time-out
Default
Start button
on the
Windows
Taskbar,
then point to
Shutdown
and click
Standby.
15 minutes if
using battery
power.
Computer
will not
automatically
enter
Standby
the Status Disqplay2.
mode if
using AC
Power.
* Moon icon appears on status display (1600 Series
only)
Hibernate ActivationDeactivation Indicators
ManualPress Power
button once.
Time-out
Default
When
battery is
Press Power
button once.
Power
light is off,
screen is
blank**
low or after
1 hour of
Standby.
Computer
will not
automatically
enter
Hibernation
mode if
using AC
Power.
** Power icon does not appear on status display
(1600 Series only)
OFFActivationDeactivation Indicators
StandardPerform
normal
Windows
shutdown
Press Power
button once.
Power
light is off,
screen is
blank.
using the
Start button
ManualPress and
IMPORTANT:
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on the
Windows
Taskbar.
hold down
the Power
button for 4
seconds.
The manual shutdown mode is not
recommended unless the standard
shutdown mode does not work.
Battery Operating Life
Battery operating life is affected by variables such as the
following:
● Power conservation settings
● Hardware configuration
● Software applications
● Installed options
● Display brightness
● Hard drive usage
● 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
Battery Pack Operations.
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Servicing the Computer - Full Off Mode
The computer must be turned off completely when installing or
replacing components in the system. Follow the instructions
above for properly putting the computer into Off mode, unplug
from the outlet, and remove the battery (
see Battery Pack
Removal Sequence).
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Rebooting After a Lockup
To reboot the computer (as if from a cold start), when the
keyboard is frozen or the screen is locked, 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 does not recover, press the Power
button and hold 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.
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Recovering From a Loss of Electrical Power
Loss of electrical power will cause the Internet PC to
automatically turn off. This may cause loss of data because the
Microsoft Windows operating system is not able to properly close
all files and programs.
Loss of power may be caused by one of the following:
● Electrical power service is interrupted.
● The power cord is accidentally disconnected.
If power surges or sags, the display and status lights may
flicker, and the computer may automatically restart. If an
improper shutdown occurs, ScanDisk, a Microsoft Windows utility
program, will automatically run once power is restored. ScanDisk
will determine if the improper shutdown caused any errors on
the hard disk. These errors may occur if the Microsoft Windows
operating system was not able to properly close all files before
the shutdown. If no errors are found, the restart process will
continue. If ScanDisk does detect errors, follow the instructions
shown to continue the restart process. Work that was not saved
prior to the lockup may be lost.
Use of a surge suppressor, line conditioner, or uninterruptible
power supply (UPS) may protect the computer from damage
caused by power surges or sags.
If a power failure occurs or the power cord disconnects while the
computer is turned on, turn off the computer until normal
service has been restored. ScanDisk may run to check the hard
disk for errors caused by the improper shutdown the next time
the computer turns on.