Compaq Evo N200 Manual

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Maintenance and Service Guide
Compaq Evo N200 Series
Document Part Number: 233117-001
September 2001
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.

© 2001 Compaq Computer Corporation
Compaq and the Compaq logo Registered in U. S. Patent and Trademark Office.
Evo is a trademark of Compaq Information Technologies Group, L.P.
Microsoft and Windows are trademarks of Microsoft Corporation.
Intel and Pentium are trademarks of Intel Corporation.
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
First Edition (September 2001)
Document Part Number: 233117-001

Maintenance and Service Guide iii
Contents
1 Product Description
1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
1.2 Clearing a Password. . . . . . . . . . . . . . . . . . . . . . . . . . 1–4
1.3 Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5
1.4 Computer External Components . . . . . . . . . . . . . . . . 1–6
1.4 Design Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–16
2 Troubleshooting
Using the PhoenixBIOS Setup Utility . . . . . . . . . . . . . . . 2–1
Troubleshooting Flowcharts. . . . . . . . . . . . . . . . . . . . . . . 2–2
Initial Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 2–3
2.2 No Power, Part 1 . . . . . . . . . . . . . . . . . . . . . . . . . 2–4
2.3 No Power, Part 2 . . . . . . . . . . . . . . . . . . . . . . . . . 2–5
2.4 No Power, Part 3 . . . . . . . . . . . . . . . . . . . . . . . . . 2–6
2.5 No Power, Part 4 . . . . . . . . . . . . . . . . . . . . . . . . . 2–7
2.6 No Video, Part 1 . . . . . . . . . . . . . . . . . . . . . . . . . 2–8
2.7 No Video, Part 2 . . . . . . . . . . . . . . . . . . . . . . . . . 2–9
2.8 Nonfunctioning Docking Station
(if applicable). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–10
2.9 No Operating System (OS) Loading . . . . . . . . . 2–11
2.10 No OS Loading from Hard Drive, Part 1. . . . . 2–12
2.11 No OS Loading from Hard Drive, Part 2. . . . . 2–13
2.12 No OS Loading from Hard Drive, Part 3. . . . . 2–14
2.13 No OS Loading from Diskette Drive. . . . . . . . 2–15
2.14 No OS Loading from CD- or
DVD-ROM Drive . . . . . . . . . . . . . . . . . . . . . . . . . . 2–16
2.15 No Audio, Part 1 . . . . . . . . . . . . . . . . . . . . . . . 2–17
2.16 No Audio, Part 2 . . . . . . . . . . . . . . . . . . . . . . . 2–18

iv Maintenance and Service Guide
2.17 Nonfunctioning Device . . . . . . . . . . . . . . . . . . 2–19
2.18 Nonfunctioning Keyboard . . . . . . . . . . . . . . . . 2–20
2.19 Nonfunctioning Pointing Device. . . . . . . . . . . 2–21
2.20 Network or Modem Connection Problems . . . 2–22
3 Illustrated Parts Catalog
3.1 Serial Number Location . . . . . . . . . . . . . . . . . . . . . . . 3–1
3.2 Computer System Major Components. . . . . . . . . . . . 3–2
3.3 Miscellaneous Plastics Kit Components . . . . . . . . . . 3–6
3.4 Cable Kit Components . . . . . . . . . . . . . . . . . . . . . . . . 3–7
3.5 Miscellaneous Spare Parts . . . . . . . . . . . . . . . . . . . . . 3–8
4 Removal and Replacement Preliminaries
4.1 Tools Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1
4.2 Service Considerations. . . . . . . . . . . . . . . . . . . . . . . . 4–2
Plastic Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–2
Cables and Connectors . . . . . . . . . . . . . . . . . . . . . . . 4–2
4.3 Preventing Damage to Removable Drives . . . . . . . . . 4–3
4.4 Preventing Electrostatic Damage . . . . . . . . . . . . . . . . 4–4
4.5 Packaging and Transporting Precautions . . . . . . . . . . 4–4
4.6 Workstation Precautions . . . . . . . . . . . . . . . . . . . . . . 4–5
4.7 Grounding Equipment and Methods . . . . . . . . . . . . . 4–6
5 Removal and Replacement Procedures
5.1 Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2
5.2 Disassembly Sequence Chart . . . . . . . . . . . . . . . . . . . 5–3
5.3 Preparing the Computer for Disassembly . . . . . . . . . 5–4
5.4 Computer Feet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–5
5.5 Modem/NIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6
5.6 LED Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–9
5.7 Microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–10
5.8 Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–11
5.9 LED Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–12
5.10 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–15
5.11 Top Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–18

Maintenance and Service Guide v
5.12 RTC Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–22
5.13 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–24
5.14 Charger Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–27
5.15 Modem/NIC Cable . . . . . . . . . . . . . . . . . . . . . . . . . 5–29
5.16 Audio Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–31
6 Specifications
A Connector Pin Assignments
B Power Cord Set Requirements
3-Conductor Power Cord Set . . . . . . . . . . . . . . . . . . . . . . B–1
General Requirements . . . . . . . . . . . . . . . . . . . . . . . . B–1
Country-Specific Requirements . . . . . . . . . . . . . . . . . . . . B–2
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–3
C Screw Listing
Index

Maintenance and Service Guide 1–1
1
Product Description
The Compaq Evo N200 Series of Personal Computers offers
advanced modularity, a 700-MHz Intel Pentium III processor
with 64-bit architecture, industry-leading Accelerated Graphics
Port (AGP) implementation, and extensive multimedia support.
The computer provides desktop functionality and connectivity
through the optional Mobile Expansion Unit (MEU).
✎All Evo N200 computer models havean SKU number of
243420-B21 and a config. code of KCJZ.
Figure 1-1. Compaq Evo N200

1–2 Maintenance and Service Guide
Product Description
1.1 Features
The computer has the following features:
■Intel Pentium III 700-MHz processor, with 256-KB
integrated cache
■ATI Mobility M1, 8-MB SDRAM
■192 MB standard memory (64 MB integrated on system
board, 128 MB in memory expansion compartment)
■Microsoft Windows 2000
■10.4-inch, XGA, TFT (1024 × 768) display, with over 16.8
million colors
■TouchPad pointing device
■Mini PCI V.90 modem plus 10/100 NIC combination card
■Support for one Type II PC Card slot with support for both
32-bit CardBus and 16-bit PC Cards

Product Description
Maintenance and Service Guide 1–3
■External AC adapter with power cord
■Support for a 6-cell Lithium ion (Li ion) primary battery pack
in the battery bay and an optional external 4-cell Li ion
■20-GB high-capacity hard drive
■Speaker
■Connectors for:
❏RJ-45 network
❏RJ-11 modem
❏External monitor
❏Mobile Expansion Unit (MEU)
❏Stereo speaker/headphone
❏Microphone
❏Universal serial bus (USB)
❏AC power

1–4 Maintenance and Service Guide
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 5.12, “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 are clear.

Product Description
Maintenance and Service Guide 1–5
1.3 Power Management
The computer comes with a collection of power management
features that extends battery operating time and conserves power.
The computer supports the following power management
features:
■Standby
■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 switch
■Standby button
■Advanced Configuration and Power Management (ACP)
compliance

1–6 Maintenance and Service Guide
Product Description
1.4 Computer External Components
The external components on the display and right side of the
computer are shown in Figure 1-2 and described in Table 1-1.
.
Figure 1-2. Front and Right Side Components

Product Description
Maintenance and Service Guide 1–7
Table 1-1
Front and Right Side Components
Item Component Function
1 Stereo speaker/
headphone jack
Connects stereo speakers,
headphones, headset, or television
audio.
2 Microphone jack Connects a single sound channel
microphone.
3 Display release latch Releases the display to open the
computer.
4 Hard drive Supports the removable primary
hard drive.
5 Power jack Connects any one of the following:
■AC adapter
■Optional automobile power
adapter/charger
■Optional aircraft power
adapter
6 PC Card slot Supports 32-bit (CardBus) and
16-bit PC Cards.
7 PC Card eject button Ejects a PC Card from the PC
Card slot.
8 Security cable slot Attaches an optional security cable
to the computer.

1–8 Maintenance and Service Guide
Product Description
The computer rear panel and left side components are shown in
Figure 1-3 and described in Table 1-2.
Figure 1-3. Rear Panel and Left Side Components

Product Description
Maintenance and Service Guide 1–9
Table 1-2
Rear Panel and Left Side Components
Item Component Function
1 RJ-45 jack (network models
only)
Connects the network cable.
✎A network cable is
included with network
models
2 RJ-11 jack (internal modem
models only)
Connects the modem cable to an
internal modem.
✎A modem cable is
included with internal
modem models.
3 External monitor connector Connects an external monitor or
overhead projector.
4 Docking connector Connects the computer to an
optional Mobile Expansion Unit.
5 USB connectors (2) Connect USB devices.
6 Infrared port Links another IrDA-compliant
device for wireless communication.
7 Vent Allows airflow to cool internal
components.

1–10 Maintenance and Service Guide
Product Description
The keyboard components are shown in Figure 1-4 and described
in Table 1-3.
Figure 1-4. Keyboard Components

Product Description
Maintenance and Service Guide 1–11
Table 1-3
Keyboard Components
Item Component Function
1 F1 through F12 function keys Perform preset functions.
2 Caps lock key Turns on the caps lock function.
3 Fn key Used with hotkeys to perform
preset hotkey functions.
4 Windows logo key Displays Windows Start menu.
5 Windows application key Displays a menu when using a
Microsoft application. The menu is
the same one that is displayed by
pressing the right mouse button.
6 Cursor control keys Move the cursor around the
screen.
7 Embedded numeric keypad Converts keys to numeric keypad.

1–12 Maintenance and Service Guide
Product Description
The external components on the top of the computer are shown in
Figure 1-5 and described in Table 1-4.
Figure 1-5. Top Components
Table 1-4
Top Components
Item Component Function
1 Power switch Turns on the computer. To turn off the
computer, use the operating system Shut
Down command.
2 Easy Access buttons (4) Provide quick access to the Internet.
3 Num lock light On: Num lock is on and the embedded
numeric keypad is enabled.

Product Description
Maintenance and Service Guide 1–13
4 Caps lock light On: Caps lock is on.
5 Scroll lock light On: Scroll lock is on.
6 Battery light On: A battery pack is charging. Blinking: A
battery pack that is the only available
power source has reached a low-battery
condition.
7 Hard drive light On: The primary hard drive is being
accessed.
8 Power light On: Power is turned on.
Blinking: Computer is in Standby.
✎The power light also blinks if a
battery pack that is the only
available power source reaches
a critical low-battery condition
while Hibernation is disabled.
9 Microphone Inputs single-channel sound to the
computer; can be used whether the
computer is open or closed.
10 Standby button ■Turns on the computer if it is off.
■Initiates and exits Standby.
■When pressed with the Fn key,
initiates Hibernation.
11 TouchPad Moves the mouse cursor, selects, and
activates.
12 Left TouchPad button Functions like the left mouse button on an
external mouse.
13 Right TouchPad button Functions like the right mouse button on
an external mouse.
Table 1-4
Top Components
(Continued)
Item Component Function

1–14 Maintenance and Service Guide
Product Description
The external components on the bottom of the computer are
shown in Figure 1-6 and described in Table 1-5.
fm
Figure 1-6. Bottom Components