Compaq evo n200 schematic

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.

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

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

Maintenance and Service Guide iii

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

iv Maintenance and Service Guide

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 v

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 have an SKU number of

✎

243420-B21 and a config. code of KCJZ.

Figure 1-1. Compaq Evo N200

Maintenance and Service Guide 1–1

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

1–2 Maintenance and Service Guide

Product Description

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

❏

Maintenance and Service Guide 1–3

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 5.12, “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.

1–4 Maintenance and Service Guide

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

Product Description

Maintenance and Service Guide 1–5

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

1–6 Maintenance and Service Guide

Tabl e 1-1

Front and Right Side Components

Item Component Function

Product Description

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.

Maintenance and Service Guide 1–7

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

1–8 Maintenance and Service Guide

Tabl e 1 -2

Rear Panel and Left Side Components

Item Component Function

Product Description

1 RJ-45 jack (network models

only)

2 RJ-11 jack (internal modem

models only)

3 External monitor connector Connects an external monitor or

4 Docking connector Connects the computer to an

5 USB connectors (2) Connect USB devices.

6 Infrared port Links another IrDA-compliant

7 Vent Allows airflow to cool internal

Connects the network cable.

A network cable is

✎

included with network models

Connects the modem cable to an internal modem.

A modem cable is

✎

included with internal modem models.

overhead projector.

optional Mobile Expansion Unit.

device for wireless communication.

components.

Maintenance and Service Guide 1–9

Product Description

The keyboard components are shown in Figure 1-4 and described in Table 1-3.

Figure 1-4. Keyboard Components

1–10 Maintenance and Service Guide

Product Description

Tabl e 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.

Maintenance and Service Guide 1–11

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.

1–12 Maintenance and Service Guide

Product Description

Table 1-4

Top Components

Item Component Function

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

7 Hard drive light On: The primary hard drive is being

8 Power light On: Power is turned on.

(Continued)

battery pack that is the only available power source has reached a low-battery condition.

accessed.

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

11 TouchPad Moves the mouse cursor, selects, and

12 Left TouchPad button Functions like the left mouse button on an

13 Right TouchPad button Functions like the right mouse button on

■

Turns on the computer if it is off.

■

Initiates and exits Standby.

■

When pressed with the Fn key, initiates Hibernation.

activates.

external mouse.

an external mouse.

Maintenance and Service Guide 1–13

Product Description

The external components on the bottom of the computer are shown in Figure 1-6 and described in Table 1-5.

Figure 1-6. Bottom Components

1–14 Maintenance and Service Guide

Table 1-5

Bottom Components

Item Component Function

Product Description

1 External battery release

latches (2)

2 Mini PCI compartment cover Contains the mini PCI modem or

3 Vents Provides airflow to cool internal

4 Primary battery release latch Releases the primary battery pack

5 Battery bay Holds the primary battery pack.

6 Memory expansion

compartment cover

7 Serial number Identifies the computer; needed

8 Hard drive Supports the removable primary

9 Speaker Produces sound.

10 Certificate of Authenticity label Contains the Product Key, which

Release the external battery pack.

network interface card.

components.

from the battery bay.

Covers the memory expansion compartment that contains one memory expansion slot for a memory expansion board.

when you call Compaq customer support.

hard drive. One screw secures the hard drive to the computer.

may need to be entered before using some Windows operating systems.

Maintenance and Service Guide 1–15

Product Description

1.4 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

■

TouchPa d

■

Audio

■

Intel Pentium III processor

■

PC Card

■

Modem

■

Network interface card

■

CAUTION: To properly ventilate the computer, allow at least a 3-inch

(7.6 cm) clearance on the right side of the computer.

1–16 Maintenance and Service Guide

Troubleshooting

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, 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.

Utilities that are preinstalled on the computer include:

PhoenixBIOS Setup Utility—Allows you to modify or

■

restore factory default settings and configure the system BIOS to diagnose and solve minor problems.

Power Management—Allows you to reduce your computer

■

power consumption.

Security—Allows you to set or remove your power-on

■

password.

Using the PhoenixBIOS Setup Utility

The PhoenixBIOS Setup Utility (PSU) is built into the system. You can configure the system BIOS and modify or restore factory default settings, such as date and time, types of disk drives, power management, and password settings. To run PSU, press the key during system startup. When the main screen displays, use the keyboard and arrow keys to move around the menus and make selections.

Maintenance and Service Guide 2–1

F10

Troubleshooting

Troubleshooting Flowcharts

Table 2-1

Troubleshooting Flowcharts Overview

Section Description

2.1 Initial troubleshooting

2.2 No power, part 1

2.3 No power, part 2

2.4 No power, part 3

2.5 No power, part 4

2.6 No video, part 1

2.7 No video, part 2

2.8 Nonfunctioning docking station

2.9 No operating system (OS) loading

2.10 No OS loading from hard drive, part 1

2.11 No OS loading from hard drive, part 2

2.12 No OS loading from hard drive, part 3

2.13 No OS loading from diskette drive

2.14 No OS loading from CD- or DVD-ROM drive

2.15 No audio, part 1

2.16 No audio, part 2

2.17 Nonfunctioning device

2.18 Nonfunctioning keyboard

2.19 Nonfunctioning pointing device

2.20 No network or modem connection

2–2 Maintenance and Service Guide

Initial Troubleshooting

Begin

Troubleshooting

Is there power?

Beeps,

LEDs, or error

Messages?

Is there video?

(no boot)

Is the OS

loading?

Is there sound?

Go to

Section 2.2,

No Power.

Check

LED board,

speaker

connections.

Go to

Section 2.6,

No Video.

Go to

Section 2.9,

No OS Loading.

Go to

Section 2.15,

No Audio.

Connecting

or modem?

All drives working?

Keyboard/

pointing

device

working?

to network

End

Troubleshooting

Section 2.17,

Nonfunctioning

Section 2.18,

Nonfunctioning

or Section 2.19,

Nonfunctioning

Pointing Device.

Section 2.20,

Go to

Device.

Go to

Keyboard,

Go to

No Network

or Modem

Connection.

Maintenance and Service Guide 2–3

Troubleshooting

2.2 No Power, Part 1

No Power

(Power LED is off)

Remove from

docking station

if applicable.

Power up

on battery

power?

*Reset power.

Power up

on AC

power?

*Reset power.

Power up

in docking

station?

Done

1. Reseat power cables in docking station and at the AC outlet.

2. Ensure the AC power source is active.

3. Ensure the power strip is working.

Done

Power up

in docking

station?

Power up

on battery

power?

Go to

Section 2.3,

No Power,

Part 2.

Power up

on AC

power?

Go to

Section 2.4,

No Power,

Part 3.

*Notes:

1. On some models, there is a separate reset button.

2. On some models, the computer may be reset using the Standby switch and either the lid switch or the main power switch.

Go to

Section 2.8,

Nonfunctioning

Docking Station.

2–4 Maintenance and Service Guide

2.3 No Power, Part 2

Continued from

Section 2.2,

No Power, Part 1.

Visually check for

debris in battery socket and clean

if necessary.

Troubleshooting

Power on?

Check battery by

recharging,

moving it to

another computer,

or replacing it.

Power on?

Done

Replace power

supply (if

applicable).

Go to

Power on?

Section 2.4,

No Power,

Part 3.

Done

Maintenance and Service Guide 2–5

Troubleshooting

2.4 No Power, Part 3

Continued from

Section 2.3,

No Power, Part 2.

Plug directly

into AC outlet.

Power LED

on?

Reseat AC adapter

in computer and at power source.

Power on?

Power outlet

active?

Replace

power cord.

Power on?

Done

Try different

outlet.

Internal or

external AC

Internal

Section 2.5,

No Power,

Done Done

adapter?

Go to

Part 4.

External

Replace external

AC adapter.

Power on?

2–6 Maintenance and Service Guide

2.5 No Power, Part 4

Continued from

Section 2.4,

No Power, Part 3.

Open

computer.

Troubleshooting

Loose or

damaged

parts?

computer and

retest.

Power on?

Done

Reseat loose

components and

boards and

replace

damaged items.

Replace the following items, if applicable. Check computer operation after each replacement:

1. Internal DC-DC converter*

2. Internal AC adapter

3. Processor board*

4. System board*

*Replace these items as a set to prevent

shorting out among components.

Maintenance and Service Guide 2–7

Troubleshooting

2.6 No Video, Part 1

No Video

Docking

Station

Stand-alone

or Docking

Station?

Go to

Section 2.7,

No Video, Part 2.

*Note: To change from internal to

external display, use the hotkey combination.

Standalone

Internal or

external

display*?

External

Adjust

brightness.

Internal

Video OK? Done

Check for bent

pins on cable.

Adjust

brightness.

Video OK? Done

Depress lid

switch to ensure

operation.

Video OK? Done

Replace the following one at a time. Test after each replacement:

1. Cable between notebook and computer display (if applicable)

2. Inverter board (if applicable)

3. Display

4. System board

Video OK?

Try another display.

Internal and

external

video OK?

Replace

system

board.

Done

2–8 Maintenance and Service Guide

Done

Troubleshooting

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