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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.
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© 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
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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. . . . . . . . . . . . . . . . . .
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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
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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 . . . . . . . . . . . . . . . . . . . . . . .
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
