Compaq Evo Notebook N800c Series
Compaq Evo Notebook N800v Series
Compaq Evo Notebook N800w Series
Compaq Presario 2800 Mobile PC
Document Part Number: 268135-002
October 2002
This guide is a troubleshooting reference used for maintaining
and servicing the notebook. It provides comprehensive
information on identifying computer features, components, and
spare parts, troubleshooting computer problems, and performing
computer disassembly procedures.
Compaq, the Compaq logo, Evo, and Presario are trademarks of Compaq
Information Technologies Group, L.P. in the U.S. and/or other countries.
Microsoft and Windows are trademarks of Microsoft Corporation in the U.S.
and/or other countries. Intel, Pentium, and SpeedStep are trademarks of the
Intel Corporation in the U.S. and/or other countries. All other product names
mentioned herein may be trademarks of their respective companies.
Compaq shall not be liable for technical or editorial errors or omissions
contained herein. The information in this document is provided “as is” without
warranty of any kind and is subject to change without notice. The warranties
for Compaq products are set forth in the express limited warranty statements
accompanying such products. Nothing herein should be construed as
constituting an additional warranty.
Maintenance and Service Guide
Second Edition October 2002
First Edition April 2002
Document Part Number: 268135-002
The Compaq Presario 2800 Series Mobile PC and Evo Notebook
N800 Series offer advanced modularity, Intel Mobile Pentium 4
processors with SpeedStep technology with 64-bit architecture,
industry-leading Accelerated Graphics Port (AGP)
implementation, and extensive multimedia support.
Figure 1-1. Compaq Presario 2800 and Evo Notebook N800
Maintenance and Service Guide1–1
Product Description
1.1 Features
■2.2-, 2.0-, 1.9-, 1.8-, 1.7-, 1.6-, 1.5-, or 1.4-GHz Intel Mobile
Pentium 4 processor with SpeedStep technology, with
256-KB integrated L2 cache, varying by computer model
■ATI Mobile Radeon 9000 or ATI P7 graphics controller with
32 to 64 MB of shared SDRAM and 4X AGP graphics card,
varying by computer model
■128-MB high-performance Synchronous DRAM (SDRAM),
expandable to 1.0 GB
■Microsoft Windows 2000, Windows XP Home, or
Windows XP Professional, varying by computer model
■15.0-inch UXGA (1600 × 1200), SXGA+ (1400 × 1050), or
XGA (1024 × 768), or 14.1-inch XGA (1024 × 768),
TFT display with over 16.7 million colors, varying by
computer model
■Full-size Windows 98 keyboard with:
❏TouchPad pointing device (Presario 2800 and
Evo Notebook N800c models)
❏TouchPad and point stick (Evo Notebook N800c
models only)
■Network interface card (NIC) integrated on the system board,
with a mini PCI V.92 modem
■Integrated wireless support of 802.11b and Bluetooth devices
through MultiPort
■Support for one Type I or II PC Card slot with support for
both 32-bit CardBus and 16-bit PC Cards
■External 65 W AC adapter with power cord
■8-cell lithium ion (Li ion) battery pack
1–2Maintenance and Service Guide
Product Description
■60-, 40-, 30-, or 20-GB high-capacity hard drive, varying by
computer model
■Support for the following drives through the MultiBay:
❏1.44-MB diskette drive
❏24X Max CD-ROM drive
❏8X Max CD-RW drive
❏8X Max DVD-ROM drive
❏8X Max DVD-CDRW combination drive
❏40- or 30-GB hard drive
❏LS-120 drive
❏8-cell battery pack
■Connectors for:
❏RJ-45 network
❏RJ-11 modem
❏Universal Serial Bus
❏Parallel devices
❏External monitor
❏AC power
❏Stereo line out/headphone
❏Mono microphone
❏S-video
❏Port replicator
❏Infrared
■JBL Pro stereo speakers with bass reflex
■Dolby Digital certified sound
Maintenance and Service Guide1–3
Product Description
1.2 Clearing a Password
If the notebook you are servicing has an unknown password,
follow these steps to clear the password. These steps also
clear CMOS:
1. Prepare the computer for disassembly (refer to Section 5.3,
“Preparing the Computer for Disassembly,” for more
information).
2. Remove the RTC battery (refer to Section 5.17, “Disk Cell
RTC Battery”).
3. Wait approximately five minutes.
4. Replace the RTC battery and reassemble the computer.
5. Connect AC power to the computer. Do not reinsert any
battery packs at this time.
6. Turn on the computer.
All passwords and all CMOS settings have been cleared.
1–4Maintenance and Service Guide
1.3 Power Management
The computer comes with power management features that
extend battery operating time and conserve power. The computer
supports the following power management features:
■Suspend
■Hibernation
■Setting customization by the user
■Hotkeys for setting level of performance
■Smart battery that provides an accurate battery power gauge
■Battery calibration
■Lid switch Suspend/resume
■Power/Suspend button
■Advanced Configuration and Power Management (ACP)
compliance
Product Description
Maintenance and Service Guide1–5
Product Description
1.4 Computer External Components
The external components on the front and right side of the
computer are shown in Figure 1-2 and described in Table 1-6.
.
Figure 1-2. Front and Right Side Components
Table 1-6
Front and Right Side Components
ItemComponentFunction
1Stereo speakers (2)Produce stereo sound.
2Power/Suspend lightOn: Power is turned on.
Off: Power is turned off.
Blinking: Computer is in Suspend mode.
1–6Maintenance and Service Guide
Product Description
Table 1-6
Front and Right Side Components
ItemComponentFunction
3Display release latchOpens the computer.
4Battery lightOn: A battery pack is charging.
Blinking: A battery pack that is the only
available power source has reached a
low-battery condition.
5Battery bayAccepts an 8-cell lithium ion (Li ion)
battery pack.
6Hard drive baySupports the removable primary hard drive.
The hard drive is secured to the computer
by one screw.
7VentAllows airflow to cool internal components.
CAUTION: To prevent damage, the computer shuts down if an
Ä
overheating condition occurs. Do not block the cooling vent.
Avoid placing the computer on a blanket, rug, or other flexible
surface that may cover the vent area.
(Continued)
8Security cable slotAttaches an optional security cable to the
computer.
Maintenance and Service Guide1–7
Product Description
The computer rear panel and left side components are shown in
Figure 1-3 and described in Table 1-7.
Figure 1-3. Rear Panel and Left Side Components
Table 1-7
Rear Panel and Left Side Components
ItemComponentFunction
1VentAllows airflow to cool internal components.
CAUTION: To prevent damage, the computer shuts down if an
overheating condition occurs. Do not block the cooling vent.
Avoid placing the computer on a blanket, rug, or other flexible
surface that may cover the vent area.
2Infrared portProvides wireless communication between
the computer and another infraredequipped device using an infrared beam.
3Parallel connectorConnects a parallel device.
1–8Maintenance and Service Guide
Table 1-7
Rear Panel and Left Side Components
ItemComponentFunction
Product Description
(Continued)
4External monitor
connector
5S-Video connectorConnects a television, VCR, camcorder, or
6USB connectors (2)Connect USB devices.
7RJ-11 modem jackConnects the modem cable to an internal
8RJ-45 network jackConnects the network cable. A network
9DC power jackConnects any one of the following:
10Mono microphone jackConnects a mono microphone, disabling the
11Stereo speaker/
headphone jack
12PC Card slotSupports a 32-bit (CardBus) or 16-bit PC
Connects an external monitor or overhead
projector.
overhead projector.
modem. A modem cable is included with
internal modem models.
cable is not included with the computer.
■AC adapter
■Optional automobile power
adapter/charger
■Optional aircraft power adapter
built-in microphone.
Connects stereo speakers, headphones,
headset, or television audio.
Card.
13PC Card eject buttonEjects a PC Card from the PC Card slot.
14MultiBayAccepts MultiBay devices, such as a
diskette drive, optical drive, hard drive,
or optional battery pack.
Maintenance and Service Guide1–9
Product Description
The computer keyboard components are shown in Figure 1-4 and
described in Table 1-8.
Figure 1-4. Keyboard Components
Table 1-8
Keyboard Components
ItemComponentFunction
1
2
1–10Maintenance and Service Guide
F1 through F12
function keys
Num lock keyOn: Num lock is on and the embedded
Perform preset functions.
numeric keypad is enabled.
Table 1-8
Keyboard Components
ItemComponentFunction
Product Description
(Continued)
3Embedded numeric
keypad
4Cursor control keysMove the cursor around the screen.
5Windows application
key
6Windows logo keysDisplays the Windows Start menu.
7
Fn keyUsed with hotkeys to perform preset hotkey
Converts keys to numeric keypad.
Displays a menu when using a Microsoft
application. The menu is the same one that
is displayed by pressing the right mouse
button.
functions.
Maintenance and Service Guide1–11
Product Description
The computer top components are shown in Figure 1-5 and
described in Table 1-9.
Figure 1-5. Top Components
Table 1-9
Top Components
ItemComponentFunction
1Display lid switchTurns off the computer display if the
computer is closed while on.
2Power lightOn: Power is turned on.
Blinking: Computer is in Suspend mode.
The power light also blinks if a battery pack
that is the only available power source
reaches a low-battery condition.
3Num lock lightOn: Num lock is on and the embedded
numeric keypad is enabled.
4Easy Access
Buttons (3)
1–12Maintenance and Service Guide
Provide quick access to the Internet. Refer
to the
Hardware Guide
computer for information about these
buttons.
that ships with the
Product Description
Table 1-9
Top Components
ItemComponentFunction
5Power buttonTurns on the computer. Use the operating
system Shut Down command to turn off the
computer.
6Digital audio buttonLaunches Windows Media Player to play
MP3 music.
7Volume control buttonsAdjust the volume of the stereo speakers.
8Caps lock lightOn: Caps lock is on.
9Drive indicator lightTurns on when the hard drive, CD-, or
DVD-ROM drive is accessed.
10MicrophoneAllows for audio input.
11TouchPadMoves the mouse cursor, selects, and
activates.
12TouchPad buttonsFunction like the left and right mouse
buttons on an external mouse.
13EasyScrollScrolls the screen left, right, up, and down.
(Continued)
14Battery power lightOn: A battery pack is charging.
Blinking: A battery pack that is the only
available power source has reached a
low-battery condition.
15Power/Suspend lightOn: Power is turned on.
Off: Power is turned off.
Blinking: Computer is in Suspend mode.
Maintenance and Service Guide1–13
Product Description
The external components on the bottom of the computer are
shown in Figure 1-6 and described in Table 1-10.
Figure 1-6. Bottom Components
Table 1-10
Bottom Components
ItemComponentFunction
1VentAllows airflow to cool internal
components.
CAUTION: To prevent damage, the computer shuts down if
an overheating condition occurs. Do not block the cooling
vent. Avoid placing the computer on a blanket, rug, or other
flexible surface that may cover the vent area.
2Connector coverProtects the parallel, external
monitor, external keyboard/mouse,
and USB connectors.
3Docking connectorConnects the computer to an
optional port replicator.
1–14Maintenance and Service Guide
Table 1-10
Bottom Components
ItemComponentFunction
(Continued)
Product Description
4Mini PCI communications
compartment
5MultiBayAccepts a diskette drive, optical
6MultiBay release switchReleases the MultiBay device from
7Serial numberIdentifies the computer; needed
8Memory expansion
compartment
9Battery pack release switchReleases the battery pack from
10Battery bayAccepts an 8-cell lithium ion
11Hard drive baySupports the primary hard drive.
12Hard drive retention screwSecures the hard drive to the
Contains the mini PCI modem
card.
drive, hard drive, or battery pack.
the connector.
when you call Compaq customer
support.
Covers the memory expansion
compartment that contains two
memory expansion slots for
memory expansion boards.
the battery compartment.
(Li ion) battery pack.
The hard drive is secured to the
computer by one screw.
computer.
Maintenance and Service Guide1–15
Product Description
1.5 Design Overview
This section presents a design overview of key parts and features
of the computer. Refer to Chapter 3, “Illustrated Parts Catalog,”
to identify replacement parts, and Chapter 5, “Removal and
Replacement Procedures,” for disassembly steps. The system
board provides the following device connections:
■Memory expansion board
■Hard drive
■Display
■Keyboard/TouchPad or pointing stick
■Audio
■Intel Mobile Pentium 4 processors with SpeedStep
technology
■Fan
■PC Card
■Modem or modem/NIC
The computer uses an electrical fan for ventilation. The fan is
controlled by a temperature sensor and is designed to turn on
automatically when high temperature conditions exist. These
conditions are affected by high external temperatures, system
power consumption, power management/battery conservation
configurations, battery fast charging, and software applications.
Exhaust air is displaced through the ventilation grill located on
the left side of the computer.
CAUTION: To properly ventilate the computer, allow at least a
Ä
3-inch (7.6 cm) clearance on the left and right sides of the
computer.
1–16Maintenance and Service Guide
Troubleshooting
WARNING: Only authorized technicians trained by Compaq should
Å
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, no one should attempt to make repairs at the
component level or to make modifications to any printed wiring
board. Improper repairs can create a safety hazard. Any indication
of component replacement or printed wiring board modification may
void any warranty or exchange allowances.
2.1 Computer Setup and Diagnostics
Utilities
Selecting Computer Setup or Compaq
Diagnostics
2
The computer features two Compaq system management utilities:
■Computer Setup—A system information and customization
utility that can be used even when your operating system is
not working or will not load. This utility includes settings that
are not available in Windows.
Maintenance and Service Guide2–1
Troubleshooting
■Compaq Diagnostics—A system information and diagnostic
utility that is used within your Windows operating system.
Use this utility whenever possible to:
❏Display system information.
❏Test system components.
❏Troubleshoot a device configuration problem in
Windows 2000, Windows XP Professional, or
Windows XP Home.
It is not necessary to configure a device connected to a USB
✎
connector on the computer or an optional docking base.
Using Computer Setup
Information and settings in Computer Setup are accessed from
the File, Security, or Advanced menus:
1. Turn on or restart the computer. Press
F10 = ROM Based Setup message is displayed in the
lower-left corner of the screen.
❏To change the language, press F2.
❏
To view navigation information, press F1.
❏
To return to the Computer Setup menu, press esc.
2. Select the File, Security, or Advanced menu.
3. To close Computer Setup and restart the computer:
❏Select File > Save Changes and Exit and press enter.
or
❏Select File > Ignore Changes and Exit and press enter.
4. When you are prompted to confirm your action, press F10.
2–2Maintenance and Service Guide
F10 while the
Troubleshooting
Selecting from the File Menu
Table 2-1
File Menu
SelectTo Do This
System Information■View identification information about the
computer, a docking base, and any battery
packs in the system.
■View specification information about the
processor, memory and cache size, and
system ROM.
Save to FloppySave system configuration settings to a diskette.
Restore from FloppyRestore system configuration settings from a
diskette.
Restore DefaultsReplace configuration settings in Computer
Setup with factory default settings. (Identification
information is retained.)
Ignore Changes and ExitCancel changes entered during the current
session, then exit and restart the computer.
Save Changes and ExitSave changes entered during the current
session, then exit and restart the computer.
Maintenance and Service Guide2–3
Troubleshooting
Selecting from the Security Menu
Table 2-2
Security Menu
SelectTo Do This
Setup PasswordEnter, change, or delete a setup password.
(The setup password is called an administrator
password in Compaq Computer Security, a
program accessed from the Windows Control
Panel.)
Power-on PasswordEnter, change, or delete a power-on password.
DriveLock PasswordsEnable/disable DriveLock; change a DriveLock
User or Master password.
DriveLock Settings are accessible only
✎
when you enter Computer Setup by
turning on (not restarting) the computer.
Password Options
Password options can be
selected only when a
power-on password has
been set.
Device SecurityEnable/Disable:
System IDsEnter identification numbers for the computer,
*Not applicable to SuperDisk LS-120 drives.
2–4Maintenance and Service Guide
Enable/Disable:
■QuickLock
■QuickLock on Suspend
■QuickBlank
To enable QuickLock on Suspend or
✎
QuickBlank, you must first enable
QuickLock.
■Ports or diskette drives*
■Diskette write*
■CD-ROM or diskette startup
Settings for a DVD-ROM can be
✎
entered in the CD-ROM field.
a docking base, and all battery packs in the
system.
Troubleshooting
Selecting from the Advanced Menu
Table 2-3
Advanced Menu
SelectTo Do This
Language (or press F2)Change the Computer Setup language.
Boot OptionsEnable/Disable:
■QuickBoot, which starts the computer more
quickly by eliminating some startup tests.
(If you suspect a memory failure and want
to test memory automatically during startup,
disable QuickBoot.)
■MultiBoot, which sets a startup sequence
that can include most bootable devices and
media in the system.
Device Options
■Enable/disable the embedded numeric
keypad at startup.
■Enable/disable multiple standard pointing
devices at startup. (To set the computer to
support only a single, usually nonstandard,
pointing device at startup, select Disable.)
■Enable/disable USB legacy support for a
USB keyboard. (When USB legacy support
is enabled, the keyboard works even when a
Windows operating system is not loaded.)
■Set an optional external monitor or overhead
projector connected to a video card in a
docking base as the primary device. (When
the computer display is set as secondary,
the computer must be shut down before
undocking from a docking base.)
Maintenance and Service Guide2–5
Troubleshooting
Table 2-3
Advanced Menu
SelectTo Do This
(Continued)
Device Options
(continued)
■Change the parallel port mode from EPP
(Enhanced Parallel Port [default]) to
standard, bidirectional, EPP or ECP
(Enhanced Capabilities Port).
■Set video-out mode to NTSC (default), PAL,
NTSC-J, or PAL-M.*
■Enable/disable all settings in the SpeedStep
window. (When Disable is selected, the
computer runs in Battery Optimized mode.)
■Specify how the computer recognizes
multiple identical docking bases that are
identically equipped. (Select Disable to
recognize the docking bases as a single
docking base; select Enable to recognize
the docking bases individually, by serial
number.)
■Enable/disable the reporting of the
processor serial number by the processor to
the software.
HDD Self Test OptionsRun a quick comprehensive self test on hard
drives in the system that support the test
features.
*Video modes vary even within regions. However, NTSC is common in North
America; PAL, in Europe, Africa, and the Middle East; NTSC-J, in Japan; and
PAL-M, in Brazil. Other South and Central American regions may use NTSC,
PAL, or PAL-M.
2–6Maintenance and Service Guide
2.2 Using Compaq Diagnostics
When you access Compaq Diagnostics, a scan of all system
components is displayed on the screen before the Compaq
Diagnostics window opens.
You can display more or less information from anywhere within
Compaq Diagnostics by selecting Level on the menu bar.
Compaq Diagnostics is designed to test Compaq components.
If non-Compaq components are tested, the results may be
inconclusive.
Obtaining, Saving, or Printing
Configuration Information
1. Access Compaq Diagnostics by selecting Start > Settings >
Control Panel > Compaq Diagnostics.
2. Select Categories, then select a category from the drop-down
list.
❏To save the information, select File > Save As.
Troubleshooting
❏To print the information, select File > Print.
3. To close Compaq Diagnostics, select File > Exit.
Maintenance and Service Guide2–7
Troubleshooting
Obtaining, Saving, or Printing Diagnostic
Test Information
1. Access Compaq Diagnostics by selecting Start > Settings >
Control Panel > Compaq Diagnostics.
2. Select the Test tab.
3. In the scroll box, select the category or device you want
to test.
4. Select a test type:
❏Quick Test—Runs a quick, general test on each device in
a selected category.
❏Complete Test—Performs maximum testing on each
device in a selected category.
❏Custom Test—Performs maximum testing on a selected
device.
◆To run all tests for your selected device, select the
Check All button.
◆To run only the tests you select, select the Uncheck
All button, then select the checkbox for each test you
want to run.
2–8Maintenance and Service Guide
Troubleshooting
5. Select a test mode:
❏Interactive Mode—Provides maximum control over the
testing process. You determine whether the test was
passed or failed and may be prompted to insert or remove
devices.
❏Unattended Mode—Does not display prompts. If errors
are found, they are displayed when testing is complete.
6. Select the Begin Testing button.
7. Select a tab to view a test report:
❏Status tab—Summarizes the tests run, passed, and failed
during the current testing session.
❏Log tab—Lists tests run on the system, the number of
times each test has run, the number of errors found on
each test, and the total run time of each test.
❏Error tab—Lists all errors found in the computer with
their error codes.
8. Select a tab to save the report:
❏Log tab—Select the Log tab Save button.
❏Error tab—Select the Error tab Save button.
9. Select a tab to print the report:
❏Log tab—Select File > Save As, then print the file from
your folder.
Maintenance and Service Guide2–9
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