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Maintenance and Service Guide
Compaq Notebook Evo N180 Series
Document Part Number: 263815-001

December 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 Information Technologies Group, L.P. Compaq, the Compaq logo, and Evo 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 Celeron are trademarks of 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 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 December 2001 Document Part Number: 263815-001

Contents
1 Product Description
1.1 Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1­2 1.2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1­10 1.3 Clearing a Password. . . . . . . . . . . . . . . . . . . . . . . . . 1­12 1.4 Power Management . . . . . . . . . . . . . . . . . . . . . . . . . 1­13 1.5 Computer External Components . . . . . . . . . . . . . . . 1­14 1.5 Design Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 1­24

2 Troubleshooting
2.1 Using the PhoenixBIOS Setup Utility . . . . . . . . . . . . 2­1 2.2 Troubleshooting Flowcharts. . . . . . . . . . . . . . . . . . . . 2­2

3 Illustrated Parts Catalog
3.1 Serial Number Location . . . . . . . . . . . . . . . . . . . . . . . 3­1 3.2 Computer System Major Components . . . . . . . . . . . . 3­2 3.3 Plastics Kit Components . . . . . . . . . . . . . . . . . . . . . . 3­8 3.4 Hardware Kit Components. . . . . . . . . . . . . . . . . . . . . 3­9 3.5 Cable Kit Components . . . . . . . . . . . . . . . . . . . . . . . 3­10 3.6 Mass Storage Devices . . . . . . . . . . . . . . . . . . . . . . . 3­11 3.7 Miscellaneous. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3­14

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4 Removal and Replacement Preliminaries
4.1 Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2 Service Considerations. . . . . . . . . . . . . . . . . . . . . . . . Plastic Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cables and Connectors . . . . . . . . . . . . . . . . . . . . . . . 4.3 Preventing Damage to Removable Drives . . . . . . . . . 4.4 Preventing Electrostatic Damage . . . . . . . . . . . . . . . . 4.5 Packaging and Transporting Precautions . . . . . . . . . . 4.6 Workstation Precautions . . . . . . . . . . . . . . . . . . . . . . 4.7 Grounding Equipment and Methods . . . . . . . . . . . . . 4­1 4­2 4­2 4­2 4­3 4­4 4­4 4­5 4­6

5 Removal and Replacement Procedures
5.1 Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­2 5.2 Disassembly Sequence Chart . . . . . . . . . . . . . . . . . . . 5­3 5.3 Preparing the Computer for Disassembly . . . . . . . . . 5­5 5.4 Memory Expansion Board . . . . . . . . . . . . . . . . . . . . 5­10 5.5 Modem Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­12 5.6 Video Memory Board . . . . . . . . . . . . . . . . . . . . . . . 5­14 5.7 Computer Feet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­16 5.8 LED Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­17 5.9 Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­19 5.10 Heat Sink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­20 5.11 Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­22 5.12 Disk Cell RTC Battery . . . . . . . . . . . . . . . . . . . . . . 5­24 5.13 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­26 5.14 Top Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­30 5.15 PC Card Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 5­32 5.16 Charger Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­35 5.17 Audio Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­37 5.18 Keyboard Support Plate . . . . . . . . . . . . . . . . . . . . . 5­39 5.19 Speaker Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 5­40 5.20 Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­42 5.21 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­44 5.22 Modem Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5­48

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Maintenance and Service Guide

6 Specifications A Connector Pin Assignments B Power Cord Set Requirements
3-Conductor Power Cord Set . . . . . . . . . . . . . . . . . . . . . . General Requirements . . . . . . . . . . . . . . . . . . . . . . . . Country-Specific Requirements . . . . . . . . . . . . . . . . . . . . Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B­1 B­1 B­2 B­2

C Screw Listing Index

Maintenance and Service Guide

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1
Product Description
The Compaq Notebook Evo N180 Series of Personal Computers offers advanced modularity, Intel Mobile Pentium III and Intel CeleronT processors with 64-bit architecture, industry-leading Accelerated Graphics Port (AGP) implementation, and extensive multimedia support.

Figure 1-1. Compaq Notebook Evo N180

Maintenance and Service Guide

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Product Description

1.1 Models
Computer models are shown in Table1-1.
Table 1-1 Compaq Notebook Evo N180 Models and Model Naming Conventions
Key N18 1 Key 1 2 3 P 2 120 3 X5 4 48 5 V 6 M 7 25 8 L 9 O 10 XXXXXX-XXX 11

Description Brand/series designator Processor type Processor speed

Options N1 = Evo Notebook 180 P = Intel Mobile Pentium III 133 = 1.33 GHz 120 = 1.20 GHz 106 = 1.066 GHz X = XGA P = SXGA+ 30 = 30 GB 20 = 20 GB D = CD-ROM V = DVD-ROM M = modem 51 = 512 MB 25 = 256 MB 12 = 128 MB L = 8 cells, Lithium ion (Li ion) 2 = Windows 2000 Computer part number C = Intel CeleronT 100 = 1.00 GHz 933 = 933 MHz 5 = 15.x inch 10 = 10 GB W = DVD-RW R = CD-RW 0 = none

4 5 6 7 8

Display type/ size/resolution Hard drive size Optical drive designator Integrated communication RAM

9 10 11

Battery cells/type Operating system SKU#

1­2

Maintenance and Service Guide

Product Description

Table 1-1 Compaq Notebook Evo N180 Models and Model Naming Conventions (Continued)
Build-to-Order Models 1 N18 2 P 3 133 4 P5 5 30 6 W 7 M 8 25 9 L 10 2 11 SKU#

All models in this section have a configuration code of KDK1. Australia / New Zealand Asia / Pacific 470023-498 470020-894 Korea 470020-895

Video memory = 32 MB; Future Bay device = diskette drive N18 P 133 P5 30 W M 25 L 2 SKU# 470020-538

People's Republic of China

Configuration code = KDK2

Video memory = 16 MB; Future Bay device = diskette drive N18 P 133 P5 30 R M 25 L 2 SKU# 470020-896

Taiwan / Hong Kong

Configuration code = KDK3

Video memory = 32 MB; Future Bay device = diskette drive N18 P 120 P5 30 V M 25 L 2 SKU#

All models in this section have a configuration code of KDKE. Europe Germany 470020-393 470020-400 Italy United Kingdom 470020-401 470023-503

Video memory = 32 MB; Future Bay device = CD-RW drive

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Product Description

Table 1-1 Compaq Notebook Evo N180 Models and Model Naming Conventions (Continued)
Build-to-Order Models 1 N18 2 P 3 100 4 P5 5 30 6 V 7 M 8 51 9 L 10 2 11 SKU# 470020-367

United States

Configuration code = KDK7

Video memory = 16 MB; Future Bay device = CD-RW drive N18 P 100 X5 30 V M 25 L 2 SKU# 470025-273

Sweden

Configuration code = KKH7

Video memory = 32 MB; Future Bay device = diskette drive N18 P 100 X5 30 V M 25 L 2 SKU# 470024-825

United States

Configuration code = FP8Z

Video memory = 16 MB; Future Bay device = CD-RW drive N18 P 100 X5 20 V M 25 L 2 SKU#

All models in this section have a configuration code of KDK4. Belgium Europe France Israel 470024-732 470023-499 470023-500 470024-736 Italy The Netherlands Norway United Kingdom 470024-565 470023-597 470024-738 470023-502

Video memory = 32 MB; Future Bay device = CD-RW drive

1­4

Maintenance and Service Guide

Product Description

Table 1-1 Compaq Notebook Evo N180 Models and Model Naming Conventions (Continued)
Build-to-Order Models 1 N18 2 P 3 100 4 X5 5 20 6 V 7 M 8 25 9 L 10 2 11 SKU# 470024-185

Germany

Configuration code = KDKX

Video memory = 32 MB; Future Bay device = diskette drive N18 P 100 X5 20 V M 25 L 2 SKU# 470024-824

United States

Configuration code = FP8Z

Video memory = 16 MB; Future Bay device = diskette drive N18 P 100 X5 20 V M 25 L 2 SKU#

All models in this section have a configuration code of KDK6. Canada 470024-184 United States 470020-369

Video memory = 8 MB; Future Bay device = CD-RW drive N18 C 933 X5 20 V M 12 L 2 SKU# 470024-823

United States

Configuration code = FP8Z

Video memory = 8 MB; Future Bay device = diskette drive

Maintenance and Service Guide

1­5

Product Description

Table 1-1 Compaq Notebook Evo N180 Models and Model Naming Conventions (Continued)
Configure-to-Order Models All configure-to-order models:


Are United States models. Have a configuration code of FP8Z. Contain a 1.44-MB diskette drive in the Future Bay. Contain 32 MB of video memory, unless noted with an asterisk (*). Models noted with an asterisk (*) contain 16 MB of video memory. Have network capability built in to the system board. Have a modem installed in the mini PCI communications socket. 2 P P P P P P P P P P P P P P P 3 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 4 P5 P5 P5 P5 P5 P5 P5 X5 X5 X5 X5 X5 X5 X5 X5 5 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 6 W W W W V V V W W W W W W W W 7 M M M M M M M M M M M M M M M 8 51 51 25 25 51 25 25 51 51 51 51 25 25 25 25 9 L L L L L L L L L L L L L L L 10 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 11 470025-290 470025-294 470025-289 470025-293 470025-288 470025-287 470025-295* 470025-298* 470025-302* 470025-306 470025-310 470025-297* 470025-301* 470025-305 470025-309

1 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18

1­6

Maintenance and Service Guide

Product Description

Table 1-1 Compaq Notebook Evo N180 Models and Model Naming Conventions (Continued)
Configure-to-Order Models 1 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 2 P P P P P P P P P P P P P P P P P P P P P P 3 120 120 120 120 120 120 120 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 4 X5 X5 X5 X5 X5 X5 X5 P5 P5 P5 P5 P5 P5 P5 P5 P5 P5 P5 P5 P5 P5 P5 5 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 20 20 20 20 20 6 V V V V V V V W W W W V V V V V V W W W W W 7 M M M M M M M M M M M M M M M M M M M M M M 8 51 51 51 51 25 25 25 51 51 25 25 51 51 51 25 25 25 51 51 25 25 25 9 L L L L L L L L L L L L L L L L L L L L L L 10 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 11 470025-296* 470025-300* 470025-304 470025-308 470025-299* 470025-303 470025-307 470025-343 470025-347 470025-342 470025-346 470025-292 470025-341 470025-345 470025-291 470025-340 470025-344 470025-319 470025-323 470025-318 470025-320 470025-322

Maintenance and Service Guide

1­7

Product Description

Table 1-1 Compaq Notebook Evo N180 Models and Model Naming Conventions (Continued)
Configure-to-Order Models 1 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 2 P P P P P P P P P P P P P P P P P P P 3 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 4 P5 P5 P5 X5 X5 X5 X5 X5 X5 X5 X5 X5 X5 X5 X5 X5 X5 X5 X5 5 20 20 20 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 6 V V V W W W W W W W V V V V V V V V V 7 M M M M M M M M M M M M M M M M M M M 8 51 51 25 51 51 51 25 25 25 25 51 51 51 51 51 25 25 25 25 9 L L L 16 16 32 16 16 32 32 16 16 32 32 32 16 16 32 32 10 2 2 2 F F F F F F F F F F F F F F F F 11 470025-317 470025-321 470025-316 470025-351 470025-355 470025-363 470025-350 470025-354 470025-356 470025-362 470025-349 470025-353 470025-357 470025-359 470025-361 470025-348 470025-352 470025-358 470025-360

1­8

Maintenance and Service Guide

Product Description

Table 1-1 Compaq Notebook Evo N180 Models and Model Naming Conventions (Continued)
Configure-to-Order Models 1 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 N18 2 P P P P P P P P P P P P P P P P 3 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 4 X5 X5 X5 X5 X5 X5 X5 X5 X5 X5 X5 X5 X5 X5 X5 X5 5 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 6 W W W W W W W W V V V V V V V V 7 M M M M M M M M M M M M M M M M 8 51 51 51 51 25 25 25 25 51 51 51 51 25 25 25 25 9 16 16 32 32 16 16 32 32 16 16 32 32 16 16 32 32 10 F F F F F F F F F F F F F F F F 11 470025-327 470025-331 470025-335 470025-339 470025-326 470025-330 470025-334 470025-338 470025-325 470025-329 470025-333 470025-337 470025-324 470025-328 470025-332 470025-336

Maintenance and Service Guide

1­9

Product Description

1.2 Features


The following processors are available, varying by computer model:


1.33-GHz Intel Mobile Pentium III processor with 256-KB integrated L2 cache 1.20-GHz Intel Mobile Pentium III processor with 256-KB integrated L2 cache 1.06-GHz Intel Mobile Pentium III processor with 256-KB integrated L2 cache 933-MHz Intel Mobile CeleronT processor with 64-KB integrated L2 cache



ATI Mobility Radeon with 64-bit video graphics, video memory expandable from 8 to 32 MB, and a 4X AGP graphics card 128- or 256-MB high-performance Synchronous DRAM (SDRAM), expandable to 1024 MB Microsoft Windows 2000 operating system The following displays are available, varying by computer model:




15.0-inch SXGA+, TFT 15.0-inch XGA, TFT



Full-size keyboard with TouchPad pointing device and 4-way Internet scroll button

1­10

Maintenance and Service Guide

Product Description



Network interface card (NIC) integrated on system board, with mini PCI V.90 modem Support for one Type I/II/III PC Card slot with support for both 32-bit CardBus and 16-bit PC Cards External 60W AC adapter with power cord 8-cell Lithium ion (Li ion) battery pack 30-, 20-, or 10-GB high-capacity hard drive, varying by computer model Connectors for:


RJ-11 modem RJ-45 network S-Video External monitor 1394 digital devices Universal Serial Bus External keyboard/mouse Parallel devices AC power Stereo line out/headphone Mono microphone



JBL Pro stereo speakers with bass reflex

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Product Description

1.3 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, "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.

1­12

Maintenance and Service Guide

Product Description

1.4 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:


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/suspend button Advanced Configuration and Power Management (ACP) compliance

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Product Description

1.5 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 1-2.
.

Figure 1-2. Front and Right Side Components
Table 1-2 Front and Right Side Components
Item 1 2 Component Display release latch Stereo speakers (2) Function Opens the computer. Produce stereo sound.

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Maintenance and Service Guide

Product Description

Table 1-2 Front and Right Side Components (Continued)
Item 3 4 Component Drive activity light Battery light Function Turns on when the hard drive or a CD- or DVD-ROM drive is accessed. On: A battery pack is charging. Blinking: A battery pack that is the only available power source has reached a low-battery condition. Connects stereo speakers, headphones, headset, or television audio. Connects a mono microphone, disabling the built-in microphone. Accepts Future Bay devices, such as a diskette drive, optical drive, hard drive, or optional battery pack.

5 6 7

Stereo speaker/ headphone jack Mono microphone jack Future Bay

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1­15

Product Description

The computer rear panel and left side components are shown in Figure 1-3 and described in Table 1-3.

Figure 1-3. Rear Panel and Left Side Components
Table 1-3 Rear Panel and Left Side Components
Item 1 Component RJ-11 jack Function Connects the modem cable to an internal modem. A modem cable is included with internal modem models. Connects the network cable. A network cable is not included with the computer. Allow airflow to cool internal components.

2 3

RJ-45 jack Vents (3)

damage, the computer Ä CAUTION: To preventoccurs. Do not block theshuts down if an overheating condition cooling vents. Avoid placing the computer on a blanket, rug, or other flexible surface that may cover the vent areas. 4 S-video connector Connects a television, VCR, camcorder, or overhead projector.

1­16

Maintenance and Service Guide

Product Description

Table 1-3 Rear Panel and Left Side Components (Continued)
Item 5 6 Component External monitor connector 1394 connector Function Connects an external monitor or overhead projector. Connects IEEE 1394-compliant products, such as digital camcorders, video editing equipment, VCRs, cameras, and audio players. A 1394 firewire cable is required for use with this jack. Connects USB devices. Connects an optional full-sized keyboard or a mouse. Both the external mouse and computer pointing device are active. An optional splitter/adapter allows an external keyboard and mouse to be used at the same time. Connects a parallel device. Connects any one of the following:


7 8

USB connectors (2) External keyboard/ mouse connector

9 10

Parallel connector DC power jack

AC adapter Optional automobile power adapter/charger Optional aircraft power adapter

11 12 13 14

Security cable slot PC Card slot PC Card eject button Optical drive bay

Attaches an optional security cable to the computer. Supports a 32-bit (CardBus) or 16-bit PC Card. Ejects a PC Card from the PC Card slot. Accepts a CD- or DVD-ROM drive.

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Product Description

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

Figure 1-4. Keyboard Components

1­18

Maintenance and Service Guide

Product Description

Table 1-4 Keyboard Components
Item 1 2 3 4 5 Component Function Perform preset functions. Turns on the numeric lock function. Converts keys to numeric keypad. Move the cursor around the screen. Displays a menu when using a Microsoft application. The menu is the same one that is displayed by pressing the right mouse button. Display Windows Start menu. Used with hotkeys to perform preset hotkey functions.

F1 through F12
function keys

Numeric lock key
Embedded numeric keypad Cursor control keys Windows application key

6 7

Windows logo keys (2)

Fn key

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1­19

Product Description

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

Figure 1-5. Top Components
Table 1-5 Top Components
Item 1 2 Component Display lid switch Power light Function Turns off the computer display if the computer is closed while on. 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 low-battery condition. On: Caps lock is on. Provide quick access to the Internet. Refer to the hardware guide that ships with the computer for information about these buttons.

3 4

Caps lock light Easy Access buttons (3)

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Maintenance and Service Guide

Product Description

Table 1-5 Top Components (Continued)
Item 5 Component Power button Function Turns on the computer. Use the operating system Shut Down command to turn off the computer. Launches Windows Media Player to play MP3 music. Adjust the volume of the stereo speakers. On: Num lock is on and the embedded numeric keypad is enabled. On: Scroll lock is on. Moves the mouse cursor, selects, and activates. Function like the left and right mouse buttons on an external mouse. Produce stereo sound. On: A battery pack is charging. Blinking: A battery pack that is the only available power source has reached a low-battery condition. Turns on when the hard drive CD- or DVD-ROM drive is accessed. Scrolls the screen left, right, up, and down.

6 7 8 9 10 11 12 13

Digital audio button Volume control buttons (2) Numeric lock light Scroll lock light TouchPad TouchPad buttons (2) Stereo speakers (2) Battery light

14 15

Drive activity light EasyScroll button

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Product Description

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

Figure 1-6. Bottom Components
Table 1-6 Bottom Components
Item 1 2 Component Tilt feet (2) Vents (3) Function Tilt the computer for ease of use. Allow airflow to cool internal components.

damage, the computer Ä CAUTION: To preventoccurs. Do not block theshuts down if an overheating condition cooling vents. Avoid placing the computer on a blanket, rug, or other flexible surface that may cover the vent areas.

1­22

Maintenance and Service Guide

Product Description

Table 1-6 Bottom Components (Continued)
Item 3 Component Connector cover Function Covers the S-video, external monitor, 1394, USB, external keyboard/mouse, and parallel connectors. Connects the computer to an optional port replicator. Contains a CD- or DVD-ROM drive. Contains the serial number and Microsoft Certificate of Authenticity labels, which may be needed when you call Compaq customer support or use some Windows operating systems. Opens the computer. Accepts an 8-cell Lithium ion (Li ion) battery pack. Releases the battery pack from the battery compartment. Covers the two memory expansion slots, the video memory expansion slot, and the mini PCI communications slot. Releases the Future Bay device from the Future Bay.

4 5 6

Docking connector Optical drive bay Labels area

7 8 9 10

Display release latch Battery bay Battery release latch Expansion compartment cover

11

Future Bay release bezel

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1­23

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 Video memory expansion board Hard drive Display Keyboard TouchPad Audio Intel Pentium III or Celeron processors Fan PC Card Modem

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.

Ä

CAUTION: To properly ventilate the computer, allow at least a 3-inch (7.6 cm) clearance on the left and right sides of the computer.

1­24

Maintenance and Service Guide

2
Troubleshooting

Å

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.



2.1 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 F10 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

2­1

Troubleshooting

2.2 Troubleshooting Flowcharts
Table 2-1 Troubleshooting Flowcharts Overview
Flowchart 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 2.14 2.15 2.16 2.17 2.18 2.19 2.20 Description Initial troubleshooting No power, part 1 No power, part 2 No power, part 3 No power, part 4 No video, part 1 No video, part 2 Nonfunctioning docking station No operating system (OS) loading No OS loading from hard drive, part 1 No OS loading from hard drive, part 2 No OS loading from hard drive, part 3 No OS loading from diskette drive No OS loading from CD- or DVD-ROM drive No audio, part 1 No audio, part 2 Nonfunctioning device Nonfunctioning keyboard Nonfunctioning pointing device No network or modem connection

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Maintenance and Service Guide

Troubleshooting

Flowchart 2.1 - Initial Troubleshooting
Begin troubleshooting.

N
Is there power? Go to Section 2.2, No Power.

Y N
Beeps, LEDs, or error messages? Check LED board, speaker connections. All drives working?

N
Go to Section 2.17, Nonfunctioning Device.

Y N
Is there video? (no boot) Go to Section 2.6, No Video.

Y N
Keyboard/ pointing device working? Go to Section 2.18, Nonfunctioning Keyboard, or Section 2.19, Nonfunctioning Pointing Device.

Y N
Is the OS loading? Go to Section 2.9, No OS Loading.

Y N
Connecting to network or modem? Go to Section 2.15, No Audio.

Y N
Is there sound?

Go to Section 2.20, No Network or Modem.

Y
End

Y

Maintenance and Service Guide

2­3

Troubleshooting

Flowchart 2.2 - No Power, Part 1
No Power (power LED is off).

Remove from docking station (if applicable).

N
Power up on battery power? *Reset power. Power up on battery power?

N
Go to Section 2.3, No Power, Part 2.

Y N
Power up on AC power? *Reset power.

Y N
Power up on AC power? Go to Section 2.4, No Power, Part 3.

Y Y
Power up in docking station? Done

Y

N
1. Reseat the power cables in the docking station and at the AC outlet. 2. Ensure the AC power source is active. 3. Ensure that the power strip is working.

*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.

Y
Done Power up in docking station?

N
Go to Section 2.8, Nonfunctioning Docking Station.

2­4

Maintenance and Service Guide

Troubleshooting

Flowchart 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.

Y
Power on? Done

N
Check battery by recharging, moving it to another computer, or replacing it.

N
Power on? Replace power supply (if applicable).

Y N
Done Power on? Go to Section 2.4, No Power, Part 3.

Y

Done

Maintenance and Service Guide

2­5

Troubleshooting

Flowchart 2.4 - No Power, Part 3
Continued from Section 2.3, No Power, Part 2. Plug directly into AC outlet.

Y
Power LED on? Done

N
Reseat AC adapter in computer and at power source.

Y
Power on? Done

N N
Power outlet active? Try different outlet. External Internal or external AC adapter? Internal Replace power cord. Go to Section 2.5, No Power, Part 4. Replace external AC adapter.

Y

N
Power on?

Y
Power on? Done

Y
Done

N

2­6

Maintenance and Service Guide

Troubleshooting

Flowchart 2.5 - No Power, Part 4
Continued from Section 2.4, No Power, Part 3.

Open computer.

Y
Loose or damaged parts? Reseat loose components and boards and replace damaged items.

N
Close computer and retest.

N
Power on? 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* Done *Replace these items as a set to prevent shorting out among components.

Y

Maintenance and Service Guide

2­7

Troubleshooting

Flowchart 2.6 - No Video, Part 1
No Video. Docking Station Stand-alone or Docking Station? Stand-alone Internal or external display*? External Adjust brightness. Adjust brightness. Internal Go to Section 2.7, No Video, Part 2. *Note: To change from internal to external display, use the hotkey combination.

Y
Video OK? Done

N

A
Y

Press lid switch to ensure operation.

Y
Done Video OK? Done

Video OK?

N
Check for bent pins on cable.

N
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

N
Video OK? Try another display. Internal and external video OK?

N
Replace system board.

Y
Done

Y
Done

2­8

Maintenance and Service Guide

Troubleshooting

Flowchart 2.7 - No Video, Part 2
Continued from Section 2.6, No Video, Part 1.

Remove notebook from docking station, if connected.

Adjust display brightness.

Check brightness of external monitor.

N
Video OK? Go to "A" in Section 2.6, No Video, Part 1. Video OK?

Y
Done

Y
Check that notebook is properly seated in docking station, for bent pins on cable, and for monitor connection.

N
Try another external monitor.

Y
Video OK? Done Internal and external video OK?

Y
Done

N

N
Go to Section 2.8, Nonfunctioning Docking Station.

Adjust external monitor display.

Maintenance and Service Guide

2­9

Troubleshooting

Flowchart 2.8 - Nonfunctioning Docking Station (if applicable)
Nonfunctioning Docking Station.

Reseat power cord in docking station and power outlet. Check voltage setting on docking station. Reinstall notebook into docking station.

Reset monitor cable connector at docking station.

Y
Docking station operating? Done

N Y
Docking station operating? Done Replace the following docking station components one at a time. Check computer operation after each replacement. 1. Power supply 2. I/O board 3. Backplane board 4. Switch box

N
Remove notebook, reseat all internal parts, and replace any damaged items in docking station.

2­10

Maintenance and Service Guide

Troubleshooting

Flowchart 2.9 - No Operating System (OS) Loading
No OS Loading*.

Reseat power cord in docking station and power outlet. No OS loading from hard drive, go to Section 2.10.

No OS loading from diskette drive, go to Section 2.13. No OS loading from CD- or DVD-ROM drive, go to Section 2.14. No OS loading from network, go to Section 2.20. *Before beginning troubleshooting, always check cable connections, cable ends, and drives for bent or damaged pins.

Maintenance and Service Guide

2­11

Troubleshooting

Flowchart 2.10 - No OS Loading from Hard Drive, Part 1
OS not loading from hard drive.

Y
Nonsystem disk message?

N
Reseat external hard drive.

Go to Section 2.11, No OS Loading from Hard Drive, Part 2.

Y
OS loading? Done

N N
Boot from CD?

N
Boot from diskette?

Y
Check the setup utility for correct booting order.

Y N
Change boot priority through the setup utility and reboot.

Go to Section 2.13, No OS Loading from Diskette Drive.

Boot from hard drive?

Y
Done Boot from hard drive?

N
Go to Section 2.17, Nonfunctioning Device.

Y
2­12 Maintenance and Service Guide

Troubleshooting

Flowchart 2.11 - No OS Loading from Hard Drive, Part 2
Continued from Section 2.10, No OS Loading from Hard Drive, Part 1.

Reseat hard drive.

N
CD or diskette in drive? 1. Replace hard drive. 2. Replace system board.

Y
Hard drive accessible? Done

Y N
Remove diskette and reboot.

Run FDISK.

Y
Boot from hard drive? Done Hard drive partitioned?

N
Create partition, then format hard drive to bootable C:\ prompt.

N N
Boot from diskette drive? Go to Section 2.13, No OS Loading from Diskette Drive.

Y N
Hard drive formatted?

Y N
Hard drive accessible?

Y

Y
Computer booted? Done

Format hard drive and bring to a bootable C:\ prompt.

Y
Go to Section 2.12, No OS Loading from Hard Drive, Part 3.

N
Go to Section 2.12, No OS Loading from Hard Drive, Part 3.

Load OS using Restore CD (if applicable).

Maintenance and Service Guide

2­13

Troubleshooting

Flowchart 2.12 - No OS Loading from Hard Drive, Part 3
Continued from Section 2.11, No OS Loading from Hard Drive, Part 2.

N
System files on hard drive? Install OS and reboot.

Y Y
Virus on hard drive? Clean virus. OS loading from hard drive?

Y
Done

N
Run SCANDISK and check for bad sectors.

N Y
Diagnostics on diskette? Replace hard drive.

N N
Can bad sectors be fixed? Replace hard drive. Run diagnostics and follow recommendations.

Y N
Fix bad sectors. Boot from hard drive? Replace hard drive.

Y
Done

2­14

Maintenance and Service Guide

Troubleshooting

Flowchart 2.13 - No OS Loading from Diskette Drive
Y
OS not loading from diskette drive. Reseat diskette drive. OS loading? Done

N

Y
Nonsystem disk message? Bootable diskette in drive?

N
Install bootable diskette and reboot computer.

N N
Boot from another device? Go to Section 2.17, Nonfunctioning Device.

Y

Check diskette for system files. Try different diskette.

Y N
Diskette drive enabled in the setup utility? Enable drive and cold boot computer. Nonsystem disk error?

Y
1. Replace diskette drive. 2. Replace system board.

Y Y
Diskette drive boot order? Clear CMOS. Refer to Section 1.2, "Clearing a Password," for instructions.

N Y
OS loading? Done

N

N

Change boot priority using the setup utility.

Go to Section 2.17, Nonfunctioning Device.

Maintenance and Service Guide

2­15

Troubleshooting

Flowchart 2.14 - No OS Loading from CD- or DVD-ROM Drive
No OS Loading from CD- or DVD-ROM Drive.

Y
Disc in drive? Bootable disc in drive?

N

N
Install bootable disc.

Y
Try another bootable disc.

Install bootable disc and reboot computer.

Y
Boots from CD or DVD? Done

N Y
Reseat drive. Boots from CD or DVD? Done

N N
Booting from another device? Go to Section 2.17, Nonfunctioning Device. Clear CMOS. Refer to Section 1.2, "Clearing a Password," for instructions.

Y Y
Booting order correct?

N
Correct boot order using the setup utility.

Go to Section 2.17, Nonfunctioning Device.

2­16

Maintenance and Service Guide

Troubleshooting

Flowchart 2.15 - No Audio, Part 1
Y
No Audio. Turn up audio internally or externally. Audio? Done

N

Y
Notebook in docking station (if applicable)? Undock Internal audio?

N
Go to Section 2.16, No Audio, Part 2.

N

Y
Replace the following docking station components one at a time as applicable. Check after each change. 1. Reseat docking station audio cable. 2. Replace audio cable. 3. Replace speaker. 4. Replace docking station audio board. 5. Replace backplane board.

Go to Section 2.16, No Audio, Part 2.

Y
Go to Section 2.17, Nonfunctioning Device. Audio? Done

N

Maintenance and Service Guide

2­17

Troubleshooting

Flowchart 2.16 - No Audio, Part 2
Continued from Section 2.15, No Audio, Part 1.

N
Audio driver in OS configured? Reload audio drivers.

Y N
Correct drivers for application? Load drivers and set configuration in OS.

Y
Connect to external speaker.

N
Audio?

Y

Replace audio board and speaker connections in notebook (if applicable).

Y
Audio? Done

N
1. Replace internal speakers. 2. Replace audio board (if applicable). 3. Replace system board.

2­18

Maintenance and Service Guide

Troubleshooting

Flowchart 2.17 - Nonfunctioning Device
Nonfunctioning Device.

Reseat device.

Unplug the nonfunctioning device from the notebook, inspect cables and plugs for bent or broken pins or other damage.

Y
Clear CMOS. Any physical device? Fix or replace broken item.

N
Reattach device. Close notebook, plug in power, and reboot. Possible bad hard drive. Replace drive. Go to Section 2.9, No OS Loading.

N
Device boots properly?

Y

Possible bad NIC. Replace card. If integrated NIC, replace system board.

N
Device boots properly?

Y

Done

Possible bad diskette drive. Replace drive.

Done

Maintenance and Service Guide

2­19

Troubleshooting

Flowchart 2.18 - Nonfunctioning Keyboard
Keyboard not operating properly.

Connect notebook to good external keyboard.

N
External device works? Replace system board.

Y
Reseat internal keyboard connector (if applicable).

N
OK? Replace internal keyboard or cable.

Y Y
Done OK? Done

N
Replace system board.

2­20

Maintenance and Service Guide

Troubleshooting

Flowchart 2.19 - Nonfunctioning Pointing Device
Pointing device not operating properly.

Connect notebook to good external pointing device.

N
External device works? Replace system board.

Y
Reseat internal pointing device connector (if applicable).

N
OK? Replace internal pointing device or cable.

Y Y
Done OK? Done

N
Replace system board.

Maintenance and Service Guide

2­21

Troubleshooting

Flowchart 2.20 - Network or Modem Connection
No network or modem connection.

N
Network or modem jack active? Replace jack or have jack activated.

Y Y
Digital line? Connect to non-digital line.

N N
NIC/modem configured in OS? Reload drivers and reconfigure. OK?

Y
Done

Y
Disconnect all power from the notebook and open.

N
Replace NIC/modem (if applicable).

Y
Reseat NIC/modem (if applicable). OK? Done

N
Replace system board.

2­22

Maintenance and Service Guide

3
Illustrated Parts Catalog
This chapter provides an illustrated parts breakdown and a reference for spare part numbers and option part numbers.

3.1 Serial Number Location
When ordering parts or requesting information, provide the computer serial number and model number located on the bottom of the computer (Figure 3-1).

Figure 3-1. Serial Number Location

Maintenance and Service Guide

3­1

Illustrated Parts Catalog

3.2 Computer System Major Components

Figure 3-2. Computer System Major Components

3­2

Maintenance and Service Guide

Illustrated Parts Catalog

Table 3-1 Spare Parts: Computer System Major Components
Spare Part Number

Item 1

Description Displays 15.0-inch, XGA, CTFT 15.0-inch, SXGA+, CTFT Plastics Kit, includes:

266978-001 266979-001 253944-001 not illustrated: tilt feet (2) front computer feet (2) rear computer feet (2)

2a 2b 2c 2d 2e 2f 3 4 5 6

left hinge cover right hinge cover PC Card space saver connector cover docking connector cover expansion cover LED cover U.S. English keyboard Heat sink (includes fan) Processors

253932-001 253929-001 253933-001

Intel Mobile Pentium III 1.2 GHz Intel Mobile Pentium III 1.066 GHz Intel Mobile Pentium III 1.0 GHz Intel Celeron 933 MHz 7 8 Disk cell RTC battery Top cover (includes TouchPad, TouchPad buttons, and Easy Scroll)

253907-001 263656-001 253905-001 260610-001 253947-001 253934-001

Maintenance and Service Guide

3­3

Illustrated Parts Catalog

Computer System Major Components (Continued)

3­4

Maintenance and Service Guide

Illustrated Parts Catalog

Table 3-1 Spare Parts: Computer System Major Components (Continued)
Spare Part Number 253936-001 253937-001 not illustrated: 1394/USB shield

Item 9

Description PC Card assembly Hardware Kit, includes:

10a 10b 10c 10d 10e 10f 11 12 13 14

PC Card assembly shield Charger board shield Left display support Right display support VGA chip EMI shield Keyboard support plate Charger board Audio board Fan

253935-001 253938-001 273906-001 253914-001 253946-001 not illustrated: Diskette drive cable CD-ROM drive cable TouchPad cable 260611-001

System board (includes network interface; does not include any memory) Cable Kit, includes:

15

Modem cable

16a 16b 17

Base enclosure Speaker assembly (spared with base enclosure) Optical drives 24X Max CD-ROM drive DVD/CD-RW combination drive CD-RW drive 8X Max DVD drive

253923-001 253926-001 253924-001 253925-001

Maintenance and Service Guide

3­5

Illustrated Parts Catalog

Computer System Major Components (Continued)

3­6

Maintenance and Service Guide

Illustrated Parts Catalog

Table 3-1 Spare Parts: Computer System Major Components (Continued)
Spare Part Number

Item 18a

Description Hard drives 30 GB 20 GB 10 GB

253921-001 253920-001 253918-001

18b 19

Hard drive bracket (spared with hard drive) Future Bay devices 24X Max CD-ROM drive DVD/CD-RW combination drive CD-RW drive 8X Max DVD drive Battery pack (32.4 WHr, 3.0 AHr) Space saver Diskette drive 257981-001 257983-001 257982-001 257984-001 233478-001 257987-001 257985-001 233477-001 253928-001

20 21 22

4.0 AHr, 57.6 WHr, Li ion battery pack United States modem board Memory expansion boards 512 MB 256 MB 128 MB

253943-001 253942-001 253941-001

23

Video memory boards 32 MB 16 MB 8 MB 253917-001 253916-001 253915-001

Maintenance and Service Guide

3­7

Illustrated Parts Catalog

3.3 Plastics Kit Components

Figure 3-3. Plastics Kit Components
Table 3-2 Plastics Kit Components Spare Part Number 253944-001
Item 1 2 3 4 5 6 Description Left hinge cover Right hinge cover PC Card space saver Connector cover Docking connector cover Expansion cover not illustrated: Tilt feet (2) Front computer feet (2) Rear computer feet (2)

3­8

Maintenance and Service Guide

Illustrated Parts Catalog

3.4 Hardware Kit Components

Figure 3-4. Hardware Kit Components
Table 3-3 Hardware Kit Components Spare Part Number 253937-001
Item 1 2 3 4 5 6 Description Left display support VGA chip EMI shield Right display support Charger board shield Keyboard support plate PC Card assembly shield not illustrated: 1394/USB shield

Maintenance and Service Guide

3­9

Illustrated Parts Catalog

3.5 Cable Kit Components

Figure 3-5. Cable Kit Components
Table 3-4
Cable Kit Components

Spare Part Number 253946-001
Item 1 Description Modem cable not illustrated: CD-ROM drive cable Diskette drive cable

2

TouchPad cable

3­10

Maintenance and Service Guide

Illustrated Parts Catalog

3.6 Mass Storage Devices

Figure 3-6. Mass Storage Devices
Table 3-5 Mass Storage Devices
Spare Part Number

Item 1

Description Hard drives 30 GB 20 GB 10 GB

253921-001 253920-001 253918-001

Maintenance and Service Guide

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Illustrated Parts Catalog

Mass Storage Devices (Continued)
Table 3-5 Mass Storage Devices (Continued)
Spare Part Number 257981-001 257983-001 257982-001 257984-001 233478-001 257987-001 257985-001

Item 2

Description Future Bay Devices 24X Max CD-ROM drive DVD/CD-RW combination drive CD-RW drive 8X Max DVD drive Battery pack (32.4 WHr, 3.0 AHr) Space saver Diskette drive

3­12

Maintenance and Service Guide

Illustrated Parts Catalog

Mass Storage Devices (Continued)
Table 3-5 Mass Storage Devices (Continued)
Spare Part Number

Item 3

Description Optical Drives 24X Max CD-ROM drive DVD/CD-RW combination drive CD-RW drive 8X Max DVD drive

253923-001 253926-001 253924-001 253925-001

Maintenance and Service Guide

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Illustrated Parts Catalog

3.7 Miscellaneous
Table 3-6 Spare Parts: Miscellaneous (not illustrated)
Spare Part Number 266152-001 253945-001

Description Logo kit Screw kit (Includes the following screws and screwlocks. Refer to Appendix C, "Screw Listing," for more information on screw specifications and usage.)


M2.0 × 8.0 screw M2.0 × 5.5 screw M2.0 × 4.5 screw HM5.0 × 10.5 screwlock



M2.5 × 4.0 screw M1.5 × 8.0 screw M1.5 × 5.0 screw M1.5 × 4.0 screw

AC adapters 60-Watt AC adapter power supply (2 wire) 60-Watt AC adapter power supply (3 wire) Power cord, 3 wire, North America Port Replicator 222113-001 240905-021 197230-001 253939-001

3­14

Maintenance and Service Guide

4
Removal and Replacement Preliminaries
This chapter provides essential information for proper and safe removal and replacement service.

4.1 Tools Required
You will need the following tools to complete the removal and replacement procedures:


Magnetic screwdriver Phillips P0 screwdriver 5.0-mm hex socket (for system board screwlocks) Tool kit (includes connector removal tool, loopback plugs, and case utility tool)

Maintenance and Service Guide

4­1

Removal and Replacement Preliminaries

4.2 Service Considerations
The following sections include some of the considerations that you should keep in mind during disassembly and assembly procedures. the As you remove each subassembly from the computer, place work subassembly (and all accompanying screws) away from the area to prevent damage.

Plastic Parts
Using excessive force during disassembly and reassembly can damage plastic parts. Use care when handling the plastic parts. Apply pressure only at the points designated in the maintenance instructions.

Cables and Connectors
Cables must be handled with extreme care to avoid damage. Apply only the tension required to unseat or seat the cables during removal and insertion. Handle cables by the connector whenever possible. In all cases, avoid bending, twisting, or tearing cables. Ensure that cables are routed in such a way that they cannot be caught or snagged by parts being removed or replaced. Handle flex cables with extreme care; these cables tear easily.

Ä

CAUTION: When servicing the computer, ensure that cables are placed in their proper locations during the reassembly process. Improper cable placement can damage the computer.

4­2

Maintenance and Service Guide

Removal and Replacement Preliminaries

4.3 Preventing Damage to Removable Drives
Removable drives are fragile components that must be handled with care. To prevent damage to the computer, damage to a removable drive, or loss of information, observe the following precautions:


Before removing or inserting a hard drive, shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, then shut it down. Before removing a diskette drive or optical drive, ensure that a diskette or disc is not in the drive. Ensure that the optical drive tray is closed. Before handling a drive, ensure that you are discharged of static electricity. While handling a drive, avoid touching the connector. Handle drives on surfaces that have at least one inch of shock-proof foam. Avoid dropping drives from any height onto any surface. After removing a hard drive, CD-ROM drive, or a diskette drive, place it in a static-proof bag. Avoid exposing a hard drive to products that have magnetic fields, such as monitors or speakers. Avoid exposing a drive to temperature extremes or to liquids. If a drive must be mailed, place the drive in a bubble pack mailer or other suitable form of protective packaging and label the package "Fragile: Handle With Care."







Maintenance and Service Guide

4­3

Removal and Replacement Preliminaries

4.4 Preventing Electrostatic Damage
Many electronic components are sensitive to electrostatic discharge (ESD). Circuitry design and structure determine the degree of sensitivity. 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. 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 may not be affected at all and can work perfectly throughout a normal cycle. Or the device may function normally for a while, then degrade in the internal layers, reducing its life expectancy.

4.5 Packaging and Transporting Precautions
Use the following grounding precautions when packaging and transporting equipment:


To avoid hand contact, transport products in static-safe containers such as tubes, bags, or boxes. Protect all electrostatic-sensitive parts and assemblies with conductive or approved containers or packaging. Keep electrostatic-sensitive parts in their containers until the parts arrive at static-free workstations. Place items on a grounded surface before removing items from their containers. Always be properly grounded when touching a sensitive component or assembly.

4­4

Maintenance and Service Guide

Removal and Replacement Preliminaries



Store reusable electrostatic-sensitive parts from assemblies in protective packaging or nonconductive foam. Use transporters and conveyers made of antistatic belts and roller bushings. Ensure that mechanized equipment used for moving materials is wired to ground and that proper materials are selected to avoid static charging. When grounding is not possible, use an ionizer to dissipate electric charges.

4.6 Workstation Precautions
Use the following grounding precautions at workstations:


Cover the workstation with approved static-dissipative material (refer to Table 4-2). Use a wrist strap connected to a properly grounded work surface and use properly grounded tools and equipment. Use conductive field service tools such as cutters, screwdrivers, and vacuums. When using fixtures that must directly contact dissipative surfaces, only use fixtures made of static-safe materials. Keep the work area free of nonconductive materials such as ordinary plastic assembly aids and Styrofoam. Handle electrostatic-sensitive components, parts, and assemblies by the case or PCM laminate. Handle these items only at static-free workstations. Avoid contact with pins, leads, or circuitry. Turn off power and input signals before inserting or removing connectors or test equipment.



Maintenance and Service Guide

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Removal and Replacement Preliminaries

4.7 Grounding Equipment and Methods
Grounding equipment must include either a wrist strap or a foot strap at a grounded workstation.


When seated, wear a wrist strap connected to a grounded system. Wrist straps are flexible straps with a minimum of one megohm ±10% resistance in the ground cords. To provide proper ground, wear a strap snugly against the skin at all times. On grounded mats with banana-plug connectors, connect a wrist strap with alligator clips. When standing, use foot straps and a grounded floor mat. Foot straps (heel, toe, or boot straps) can be used at standing workstations and are compatible with most types of shoes or boots. On conductive floors or dissipative floor mats, use foot straps on both feet with a minimum of one-megohm resistance between the operator and ground. To be effective, the conductive strips must be worn in contact with the skin.



Other grounding equipment recommended for use in preventing electrostatic damage includes:


Antistatic tape Antistatic smocks, aprons, and sleeve protectors Conductive bins and other assembly or soldering aids Nonconductive foam Conductive tabletop workstations with ground cords of one-megohm resistance Static-dissipative tables or floor mats with hard ties to the ground Field service kits Static awareness labels Material-handling packages

4­6

Maintenance and Service Guide

Removal and Replacement Preliminaries



Nonconductive plastic bags, tubes, or boxes Metal tote boxes Electrostatic voltage levels and protective materials

Table 4-1 shows how humidity affects the electrostatic voltage levels generated by different activities.
Table 4-1 Typical Electrostatic Voltage Levels
Relative Humidity Event Walking across carpet Walking across vinyl floor Motions of bench worker Removing DIPS from plastic tube Removing DIPS from vinyl tray Removing DIPS from Styrofoam Removing bubble pack from PCB Packing PCBs in foam-lined box 10% 35,000 V 12,000 V 6,000 V 2,000 V 11,500 V 14,500 V 26,500 V 21,000 V 40% 15,000 V 5,000 V 800 V 700 V 4,000 V 5,000 V 20,000 V 11,000 V 55% 7,500 V 3,000 V 400 V 400 V 2,000 V 3.500 V 7,000 V 5,000 V

A product can be degraded by as little as 700 volts.
Table 4-2 lists the shielding protection provided by antistatic bags and floor mats.
Table 4-2 Static-Shielding Materials
Material Antistatic plastic Carbon-loaded plastic Metallized laminate Use Bags Floor mats Floor mats Voltage Protection Level 1,500 V 7,500 V 5,000 V

Maintenance and Service Guide

4­7

5
Removal and Replacement Procedures
This chapter provides removal and replacement procedures. Phillips P1 screws are removed during disassembly. There are 63 screws and screwlocks, in nine different sizes, that must be removed and replaced when servicing the computer. Make special note of each screw size and location during removal and replacement. Refer to Appendix C, "Screw Listing," for detailed information on screw sizes, locations, and usage.

Maintenance and Service Guide

5­1

Removal and Replacement Procedures

5.1 Serial Number
Report the computer serial number to Compaq when requesting information or ordering spare parts. The serial number is located on the bottom of the computer (Figure 5-1).

Figure 5-1. Serial Number Location

5­2

Maintenance and Service Guide

Removal and Replacement Procedures

5.2 Disassembly Sequence Chart
Use the following chart to determine the section number to be referenced when removing computer components.
Table 5-1 Disassembly Sequence Chart
Section 5.3 Description Preparing the computer for disassembly Battery pack Future Bay device Optical drive Hard drive 0 0 2 2 to remove hard drive 4 to separate hard drive from hard drive bracket 2 (plus 2 captive screws on expansion cover loosened) 2 (plus 2 captive screws on expansion cover loosened) 2 (plus 2 captive screws on expansion cover loosened) 0 2 # of Screws Removed

5.4

Memory expansion board

5.5

Modem board

5.6

Video memory board

5.7 5.8

Computer feet LED cover

Maintenance and Service Guide

5­3

Removal and Replacement Procedures

Table 5-1 Disassembly Sequence Chart (Continued)
Section 5.9 5.10 5.11 5.12 5.13 Description Keyboard Heat sink Processor Disk cell RTC battery Display # of Screws Removed 0 4 0 0 8 (plus 2 ground screws only on 15.1-inch display models) 14 2 to remove PC Card assembly 4 to separate PC Card assembly from PC Card assembly shield 3 2 4 0 0 8 0

5.14 5.15

Top cover PC Card assembly

5.16 5.17 5.18 5.19 5.20 5.21 5.22

Charger board Audio board Keyboard support plate Speaker assembly Fan System board Modem cable

5­4

Maintenance and Service Guide

Removal and Replacement Procedures

5.3 Preparing the Computer for Disassembly
Perform the following steps before disassembling the computer: 1. Turn off the computer. 2. Disconnect the AC adapter and all external devices. 3. Remove the battery pack by following these steps: a. Turn the computer bottom side up with the front facing forward. b. Slide and hold the battery release latch 1 toward the left side of the computer. The back edge of the battery pack rises up (Figure 5-2). c. Swing the back edge of the battery pack up and forward 2 and remove the battery pack 3.

Figure 5-2. Removing the Battery Pack

Reverse the above procedure to install the battery pack.

Maintenance and Service Guide

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Removal and Replacement Procedures

4. Remove the Future Bay device by following these steps: a. Turn the computer bottom side up with the right side facing forward. b. Slide the Future Bay release bezel forward 1. The Future Bay device separates from the base enclosure (Figure 5-3). c. Remove the Future Bay device from the base enclosure 2.

Figure 5-3. Removing the Future Bay Device

Reverse the above procedure to install the Future Bay device.

5­6

Maintenance and Service Guide

Removal and Replacement Procedures

5. Remove the fixed optical drive by following these steps: a. Turn the computer bottom side up with the left side facing forward. b. Remove the two PM2.0 × 5.5 screws 1 that secure the optical drive to the base enclosure (Figure 5-4). c. Slide the optical drive to the right 2 and remove it from the optical drive bay.

Figure 5-4. Removing the Optical Drive

Reverse the above procedure to install the optical drive.

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Removal and Replacement Procedures

6. Remove the hard drive by following these steps: a. Remove the battery pack (Section 5.3). b. Remove the optical drive. c. Remove the two PM2.0 × 5.5 screws 1 that secure the hard drive bracket to the base enclosure (Figure 5-5). d. Slide the hard drive forward 2 to unseat the hard drive connector from the system board. e. Lift the front edge of the hard drive bracket 3 until it clears the base enclosure and slide the hard drive bracket out of the hard drive bay.

Figure 5-5. Removing the Hard Drive

Reverse the above procedure to install the hard drive.

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Removal and Replacement Procedures

7. The hard drive bracket is spared with the hard drive. If the hard drive must be removed from the hard drive bracket, perform the following steps: a. Remove the four PM2.5 × 4.0 screws 1 that secure the hard drive to the hard drive bracket (Figure 5-6). b. Lift the hard drive straight up 2 and remove it from the bracket.

Figure 5-6. Removing the Hard Drive from the Hard Drive Bracket

Reverse the above procedure to install the hard drive in the hard drive bracket.

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Removal and Replacement Procedures

5.4 Memory Expansion Board
Memory Expansion Board Spare Part Number Information
Memory expansion boards 512 MB 256 MB 128 MB 253943-001 253942-001 253941-001

1. Prepare the computer for disassembly (Section 5.3). 2. Turn the computer bottom side up with the front facing forward.

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Removal and Replacement Procedures

3. Remove the two PM2.0 × 5.5 screws 1 that secure the expansion cover to the base enclosure (Figure 5-7). 4. Loosen the two Phillips screws 2 that secure the expansion cover to the base enclosure.

These two screws are secured to the expansion cover by C clips and should not be removed from the expansion cover.
5. Lift the left side of the expansion cover and swing it to the right 3. 6. Remove the expansion cover 4.

The expansion cover is included in the Plastics Kit (spare part number 253944-001).

Figure 5-7. Removing the Expansion Cover

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Removal and Replacement Procedures

7. Spread the retaining tabs 1 on each side of the memory expansion board (Figure 5-8). The board releases and rests at an angle. 8. Remove the board by pulling it away from the socket at an angle 2.

Figure 5-8. Removing the Memory Expansion Board

Reverse the above procedure to install a memory expansion board.

5.5 Modem Board
Modem Board Spare Part Number Information
United States modem board 253928-001

1. Prepare the computer for disassembly (Section 5.3).

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Removal and Replacement Procedures

2. Turn the computer bottom side up with the front facing forward. 3. Remove the expansion cover as described in the Memory Expansion Board Section (Section 5.3). 4. Disconnect the modem cable from the modem board 1 (Figure 5-9). 5. Spread the retaining tabs 2 on each side of the modem board. The board releases and rests at an angle. 6. Remove the modem board by pulling it away from the socket at an angle 3.

Figure 5-9. Removing the Modem Board

Reverse the above procedure to install a modem board.

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Removal and Replacement Procedures

5.6 Video Memory Board
Video Memory Board Spare Part Number Information
Video memory boards 32 MB 16 MB 8 MB 253917-001 253916-001 253915-001

1. Prepare the computer for disassembly (Section 5.3). 2. Turn the computer bottom side up with the front facing forward. 3. Remove the expansion cover as described in the Memory Expansion Board Section (Section 5.3). 4. Turn the computer bottom side up with the front facing forward.

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Removal and Replacement Procedures

5. Spread the retaining tabs 1 on each side of the video memory board. The board releases and rests at an angle (Figure 5-10). 6. Remove the board by pulling it away from the socket at an angle 2.

Figure 5-10. Removing the Video Memory Board

Reverse the above procedure to install a video memory board.

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Removal and Replacement Procedures

5.7 Computer Feet
The computer feet are adhesive-backed rubber pads. The computer feet are included in the Plastics Kit (spare part number 253944-001). Refer to Figure 5-11 for computer feet locations.

Figure 5-11. Replacing the Computer Feet

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Removal and Replacement Procedures

5.8 LED Cover
LED Cover Spare Part Number Information
LED cover 253932-001

1. Prepare the computer for disassembly (Section 5.3). 2. Turn the computer bottom side up with the rear panel facing forward. 3. Remove the two PM2.0 × 8.0 screws that secure the LED cover to the base enclosure (Figure 5-12).

Figure 5-12. Removing the LED Cover Screws.

4. Turn the computer top side up with the front facing forward. 5. Open the computer.

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Removal and Replacement Procedures

6. Press the ESC key to reveal the notch 1 in the LED cover (Figure 5-13). 7. Insert a flat-bladed tool in the notch and lift the left side of the LED cover 2. 8. Remove the LED cover 3.

Figure 5-13. Removing the LED Cover

Reverse the above procedure to install the LED cover.

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Removal and Replacement Procedures

5.9 Keyboard
Keyboard Spare Part Number Information
U.S. English Keyboard 253929-001

1. Prepare the computer for disassembly (Section 5.3). 2. Remove the LED cover (Section 5.8). 3. Lift the back edge of the keyboard and swing it forward 1 until it rests on the palm rest (Figure 5-14). 4. Release the ZIF connector 2 to which the keyboard cable is connected and disconnect the keyboard cable 3 from the system board.

Figure 5-14. Removing the Keyboard

5. Remove the keyboard. Reverse the above procedure to install the keyboard.

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Removal and Replacement Procedures

5.10 Heat Sink
Heat Sink Spare Part Number Information
Heat sink (includes fan) 253933-001

sink includes The heat heat sink. an exhaust fan. Do not remove this fan from the 1. Prepare the computer for disassembly (Section 5.3). 2. Remove the LED cover (Section 5.8). 3. Remove the keyboard (Section 5.9).

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Removal and Replacement Procedures

4. Remove the four PM2.0 × 5.5 screws 1 that secure the heat sink to the base enclosure (Figure 5-15). removed The screws should beon the heatand replaced in the 1, 2, 3, 4 sequence as stamped sink. 5. Lift the right side of the heat sink 2 and slide it to the right at an angle until the left side of the heat sink is clear of the base enclosure.

Figure 5-15. Removing the Heat Sink Screws

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Removal and Replacement Procedures

6. Slide the heat sink forward 1 and rest it on the base enclosure (Figure 5-16). 7. Disconnect the fan cable 2 from the system board. 8. Remove the heat sink.

Figure 5-16. Removing the Heat Sink

Reverse the above procedure to install the heat sink.

5.11 Processor
Processor Spare Part Number Information
Processors Intel Mobile Pentium III 1.2 GHz Intel Mobile Pentium III 1.066 GHz Intel Mobile Pentium III 1.0 GHz Intel Celeron 933 MHz 253907-001 263656-001 253905-001 260610-001

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Removal and Replacement Procedures

1. Prepare the computer for disassembly (Section 5.3) and remove the following components: a. LED cover (Section 5.8) b. Keyboard (Section 5.9) c. Heat sink (Section 5.10) 2. Use a flat-bladed tool to turn the processor locking screw 1 one-half turn counterclockwise (Figure 5-17). 3. Lift the processor straight up and remove it 2. the gold triangle Make surethe processor. 3 is in the upper right corner when installing

Figure 5-17. Removing the Processor

Reverse the above procedure to install the processor.

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Removal and Replacement Procedures

5.12 Disk Cell RTC Battery
Disk Cell RTC Battery Spare Part Number Information
Disk cell RTC battery 253947-001

1. Prepare the computer for disassembly (Section 5.3) and remove the following components: a. LED cover (Section 5.8) b. Keyboard (Section 5.9) c. Heat sink (Section 5.10)

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Removal and Replacement Procedures

2. Use a flat-bladed tool to press the RTC battery socket release tab 1 to the right (Figure 5-18). The RTC