Summary of the content on the page No. 1
Maintenance and Service
Guide
HP Compaq nw9440 Notebook PC
HP Compaq nx9420 Notebook PC
Document Part Number: 412725-002
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 is a trademark or registered trademark 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. The information contained herein is subject to change without notice. The only warrant
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. . . . . . . . . . . . . . . . . . . . . . . . . . . 1–22 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 Display Assembly Components . . . . . . . . . . . . . . . 3–16 3.4 Plastics Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–18 3.5 Cable Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–19 3.6 Mass Storage Devices . . . . . . . . . . . . . . . . . . . . . . . 3–20 3
Summary of the content on the page No. 5
Contents 5 Removal and Replacement Procedures 5.1 Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1 5.2 Disassembly Sequence Chart . . . . . . . . . . . . . . . . . . 5–2 5.3 Preparing the Computer for Disassembly . . . . . . . . . 5–4 5.4 Hard Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6 5.5 Computer Feet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–10 5.6 Bluetooth Module . . . . . . . . . . . . . . . . . . . . . . .
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 nw9440 Notebook PC and HP Compaq nx9420 Notebook PC offer advanced modularity, Intel® Core Duo processors, and extensive multimedia support. HP Compaq nw9440 Notebook PC and HP Compaq nx9420 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: ❏ 17.0-inch, WUXGA+WVA, TFT (1920 × 1200) with over 16.8 million colors with AntiGlare ❏ 17.0-inch, WSXGA+WVA, TFT (1680 × 1050) with over 16.8 million colors with AntiGlare ❏ 17.0-inch, WXGA+WVA, TFT (1440
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 120- and 90-watt AC adapters with 3-wire power cord, varying by computer model ■ 8-cell Li-Ion battery pack ■ Stereo speakers ■ Volume up, volume mute, and volume down buttons ■ Support for the following optical drives: ❏ DVD±RW
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 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 real-time clock (RTC) battery (refer to Section 5.9, “RTC Battery,” for more information on removing and replacing the RTC battery). 3. Wait approximately 5 minutes. 4. Replace
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 AC adapter with a higher power rating sh
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 pack is charging. ■ Green: A battery pack is close to full charge capacity. ■ Blinking amber: A battery pack 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 turn
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 1–8 Maintenance and Service Guide
Summary of the content on the page No. 15
Product Description Table 1-2 Right-Side Components Item Component Function 1Audio-out Connect optional headphones or powered (headphone) jack stereo speakers. Also connects the audio function of an audio/video device such as a television or VCR. 2Audio-in Connects an optional monaural (microphone) jack microphone. 3 USB ports (2) Connect USB 1.1- and 2.0-compliant devices to the computer using a standard USB cable, or connect an optional External MultiBay II to the computer. The MultiBay
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 1-3. Left-Side Components Table 1-3 Left-Side Components Item Component Function 1 Exhaust vent Provides airflow to cool internal components. To prevent overheating, do not Ä obstruct vents. Do not allow a hard surface, such as a printer, or a soft surface, such as pillows, thick rugs, or clothing, to block airflow. 2 Smart Adaptor power Connects an AC adapter or an optional
Summary of the content on the page No. 17
Product Description Table 1-3 Left-Side Components (Continued) Item Component Function 6 1394 port Connects an optional 1394a device such as a scanner, digital camera, or digital camcorder. 7 Smart card slot Supports optional smart cards. 8 PC Card slot Supports optional Type I, Type II, or Type III 32-bit (CardBus) or 16-bit PC Cards. Maintenance and Service Guide 1–11
Summary of the content on the page No. 18
Product Description The external components on the rear panel of the computer are shown below and described in Table 1-4. Rear Panel Components 1–12 Maintenance and Service Guide
Summary of the content on the page No. 19
Product Description Table 1-4 Rear Panel 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 Battery bay Holds a battery pack. 3 Exhaust vent Provides airflow to cool internal components. To prevent overheating, do not Ä obstruct vents. Do not allow a hard surface, such as a printer, or a soft surfa
Summary of the content on the page No. 20
Product Description The standard keyboard components of the computer are shown below and described in Table 1-5. Standard Keyboard Components 1–14 Maintenance and Service Guide
