HP (Hewlett-Packard) nx8420 user manual

User manual for the device HP (Hewlett-Packard) nx8420

Device: HP (Hewlett-Packard) nx8420
Size: 4,61 MB
Date of adding : 2014-04-05 17:54:32
Number of pages: 237
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HP (Hewlett-Packard) nx8420 user manual
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Summary of the content on the page No. 1

Maintenance and Service
Guide
HP Compaq nw8440 Notebook PC
HP Compaq nc8430 Notebook PC
HP Compaq nx8420 Notebook PC
Document Part Number: 417790-001
June 2006
This guide is a troubleshooting reference used for maintaining
and servicing the computer. It provides comprehensive
information on identifying computer features, components, and
spare parts; troubleshooting computer problems; and performing
computer disassembly procedures.

Summary of the content on the page No. 2

© Copyright 2006 Hewlett-Packard Development Company, L.P. Microsoft and Windows are U.S. registered trademarks of Microsoft Corporation. Intel and Core are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries. Bluetooth is a trademark owned by its proprietor and used by Hewlett-Packard Company under license. SD Logo is a trademark of its proprietor. Java is a trademark of Sun Microsystems Inc. The information contained herein

Summary of the content on the page No. 3

Contents 1 Product Description 1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2 1.2 Resetting the Computer. . . . . . . . . . . . . . . . . . . . . . . 1–4 1.3 Power Management. . . . . . . . . . . . . . . . . . . . . . . . . . 1–5 1.4 External Components . . . . . . . . . . . . . . . . . . . . . . . . 1–6 1.5 Design Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . 1–20 2 Troubleshooting 2.1 Computer Setup. . . . . . . . . . . . . . . . . .

Summary of the content on the page No. 4

Contents 3 Illustrated Parts Catalog 3.1 Serial Number Location . . . . . . . . . . . . . . . . . . . . . . 3–1 3.2 Computer Major Components. . . . . . . . . . . . . . . . . . 3–2 3.3 Plastics Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–16 3.4 Mass Storage Devices . . . . . . . . . . . . . . . . . . . . . . . 3–18 3.5 Miscellaneous (Not Illustrated). . . . . . . . . . . . . . . . 3–20 3.6 Sequential Part Number Listing . . . . . . . . . . . . . . . 3–22 4 Removal a

Summary of the content on the page No. 5

Contents 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 . . . . . . . . . 5–5 5.4 Hard Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6 5.5 Computer Feet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–10 5.6 Optical Drive. . . . . . . . . . . . . . . . . . . . . . . . .

Summary of the content on the page No. 6

Contents 6 Specifications A Screw Listing B Software Backup and Recovery C Display Component Recycling D Connector Pin Assignments E Power Cord Set Requirements Index vi Maintenance and Service Guide

Summary of the content on the page No. 7

1 Product Description The HP Compaq nw8440 Notebook PC, HP Compaq nc8430 Notebook PC, and HP Compaq nx8420 Notebook PC offer advanced modularity, Intel® Core™ Duo processors, and extensive multimedia support. HP Compaq nw8440 Notebook PC, HP Compaq nc8430 Notebook PC, and HP Compaq nx8420 Notebook PC Maintenance and Service Guide 1–1

Summary of the content on the page No. 8

Product Description 1.1 Features ■ The following processors, varying by computer model: ❏ Intel Core Duo T2600 (2.17-GHz) ❏ Intel Core Duo T2500 (2.00-GHz) ❏ Intel Core Duo T2400 (1.83-GHz) ❏ Intel Core Duo T2300 (1.66-GHz) ■ The following displays are available, varying by computer model: ❏ 15.4-inch, WUXGA, TFT (1920 × 1200) with over 16.8 million colors with AntiGlare ❏ 15.4-inch, WSXGA, TFT (1680 × 1050) with over 16.8 million colors with AntiGlare ❏ 15.4-inch, WXGA+, TFT (1440 × 900) wit

Summary of the content on the page No. 9

Product Description ■ Integrated wireless support for Mini Card IEEE 802.11a/b/g or 802.11b/g Wireless LAN (WLAN) device ■ Support for one Type I or Type II PC Card slot, with support for both 32-bit (CardBus) and 16-bit PC Cards, varying by computer model ■ External 90-watt AC adapter with 3-wire power cord ■ 8-cell Li-Ion battery ■ Stereo speakers ■ Volume up, volume mute, and volume down buttons ■ Support for the following optical drives: ❏ DVD±RW and CD-RW Double-Layer Combo Drive ❏ DVD/C

Summary of the content on the page No. 10

Product Description 1.2 Resetting the Computer If the computer you are servicing has an unknown password, follow the steps below to reset the password. These steps also clear CMOS. The following steps will not clear an unknown password if the ✎ stringent security option has been enabled in the BIOS. If stringent security is enabled, the system board must be replaced to reset an unknown password. Refer to Section 5.23, “Serial Connector Module,” for more information on replacing the system

Summary of the content on the page No. 11

Product Description 1.3 Power Management The computer comes with power management features that extend battery operating time and conserve power. The computer supports the following power management features: ■ Standby ■ Hibernation ■ Setting customization by the user ■ Hotkeys for setting the level of performance ■ Battery calibration ■ Lid switch standby/resume ■ Power button ■ Advanced Configuration and Power Management (ACPM) compliance Maintenance and Service Guide 1–5

Summary of the content on the page No. 12

Product Description 1.4 External Components The external components on the front of the computer are shown below and described in Table 1-1. Front Components Table 1-1 Front Components Item Component Function 1 Wireless light On: An integrated wireless device, such as a wireless local area network (LAN) device and/or a Bluetooth® device, is turned on. 2Power light ■ On: The computer is on. ■ Blinking: The computer is in standby. ■ Blinking rapidly: An HP Smart AC Adapter with a higher power

Summary of the content on the page No. 13

Product Description Table 1-1 Front Components (Continued) Item Component Function 3 Battery light ■ Amber: A battery is charging. ■ Green: A battery is close to full charge capacity. ■ Blinking amber: A battery that is the only available power source has reached a low-battery condition. When the battery reaches a critical low-battery condition, the battery light begins blinking more quickly. ■ Off: If the computer is connected to an external power source, the light is turned off when al

Summary of the content on the page No. 14

Product Description The external components on the right side of the computer are shown below and described in Table 1-2. Right-Side Components Table 1-2 Right-Side Components Item Component Function 1Audio-out Produces computer sound when connected (headphone) jack to optional power stereo speakers, headphones, ear buds, a headset, or television audio. 2 Internal microphone Records sound 3Audio-in Connects an optional computer headset (microphone) jack microphone, stereo array microphone,

Summary of the content on the page No. 15

Product Description The external components on the rear panel of the computer are shown below and described in Table 1-3. Rear Panel Components Table 1-3 Rear Panel Components Item Component Function 1 Battery bay Holds a battery. 2 Smart adapter power Connects an AC adapter or an optional connector power adapter. 3 External monitor port Connects an optional VGA external monitor or projector. Maintenance and Service Guide 1–9

Summary of the content on the page No. 16

Product Description The external components on the left side of the computer are shown below and described in Table 1-4. Left-Side Components Table 1-4 Left-Side Components Item Component Function 1 Security cable slot Attaches an optional security cable to the computer. Security solutions are designed to Ä act as deterrents. These deterrents may not prevent a product from being mishandled or stolen. 2 RJ-45 (network) jack Connects an optional network cable. 3 RJ-11 (modem) jack Connects th

Summary of the content on the page No. 17

Product Description Table 1-4 Left-Side Components (Continued) Item Component Function 5 Exhaust vent Provides airflow to cool internal components. To prevent overheating, do not Ä obstruct vents. Use the computer only a hard, flat surface. Do not allow a hard surface, such as an adjoining printer, or a soft surface, such as pillows or thick rugs or clothing, to block airflow. 6 1394 port Connects an optional 1394a device such as a scanner, digital camera, or digital camcorder. 7 USB po

Summary of the content on the page No. 18

Product Description The standard keyboard components of the computer are shown below and described in Table 1-5. Standard Keyboard Components 1–12 Maintenance and Service Guide

Summary of the content on the page No. 19

Product Description Table 1-5 Standard Keyboard Components Item Component Function 1 f1 to f12 keys (12) Perform system and application tasks. When combined with the fn key, several keys and buttons perform additional tasks as hotkeys. 2 caps lock key Enables caps lock and turns on the caps lock light. 3 fn key Executes frequently used system functions when pressed in combination with a function key or the esc key. 4 Windows logo key In Windows, displays the Windows Start menu. 5Windows I

Summary of the content on the page No. 20

Product Description The computer top components are shown below and described in Table 1-6. Top Components, Part 1 1–14 Maintenance and Service Guide


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