HP Nx9420 HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu
HP Nx9420 - Compaq Business Notebook Manual
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- HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 1
Maintenance and Service Guide HP Compaq nw9440 Notebook PC HP Compaq nx9420 Notebook PC Document Part Number: 412725-003 May 2007 This guide is a troubleshooting reference used for maintaining and servicing the computer. It provides comprehensive information on identifying computer features, - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 2
, L.P. Microsoft and Windows are U.S. registered trademarks HP shall not be liable for technical or editorial errors or omissions contained herein. Maintenance and Service Guide HP Compaq nw9440 Notebook PC HP Compaq nx9420 Notebook PC Third Edition: May 2007 First Edition: March 2006 Document Part - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 3
Defaults 2-3 Computer Setup Menus 2-4 2.2 Troubleshooting Flowcharts 2-10 3 Illustrated Parts Catalog 3.1 Serial Number Location 3-1 3.2 Kit 3-19 3.6 Mass Storage Devices 3-20 3.7 Miscellaneous (Not Illustrated 3-21 3.8 Sequential Part Number Listing 3-24 Maintenance and Service Guide i - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 4
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 5-11 5.7 External Memory Module 5-12 5.8 Mini Card Module 5-14 5.9 RTC Battery 5-17 5.10 Optical Drive 5-18 5.11 Keyboard 5-20 5.12 Internal Memory Module 5-24 5.13 TouchPad - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 5
24 Speaker 5-66 5.25 System Board 5-68 5.26 USB/Audio Board 5-75 5.27 PC Card/Smart Card Assembly 5-78 6 Specifications A Screw Listing B Software Backup and Recovery C Display Component Recycling D Connector Pin Assignments E Power Cord Set Requirements Index Maintenance and Service Guide iii - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 6
Contents iv Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 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 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 8
with BrightView ■ 100-, 80-, and 60-GB high-capacity hard drive, varying by computer model ■ 256-MB DDR2 synchronous DRAM (SDRAM) at 533 MHz and 667 MHz, expandable to 4.0 GB ■ Microsoft® Windows® XP Professional ■ Full-size Windows keyboard with numeric keypad ■ TouchPad and pointing stick pointing - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 9
) 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 and CD - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 10
battery). 3. Wait approximately 5 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. 1-4 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 11
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 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 12
area network (LAN) device and/or a Bluetooth® device, is turned on. ■ On: The computer is on. ■ Blinking: The computer is in standby. ■ Blinking rapidly: An AC adapter with a higher power rating should be connected. ■ Off: The computer is off or in hibernation. 1-6 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 13
. Stereo speakers (2) Produce stereo sound. Digital Media Slot Supports 7 optional digital memory card formats: SD (Secure Digital) Memory Card, MultiMediaCard, Memory Stick, Memory Stick Pro, Memory Stick Duo (with adapter), SmartMedia, and xD-Picture Card. Maintenance and Service Guide 1-7 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 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 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 15
optional headphones or powered stereo speakers. Also connects the audio function of an audio/video device such as power source. Optical drive Supports an optical disc. The type of optical drive varies by model. RJ-45 (network) jack Connects an optional network cable. Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 16
connector Connects an AC adapter or an optional power adapter. External monitor port Connects an optional VGA external monitor or projector. S-Video-out jack Connects an optional S-Video device, such as a television, VCR, camcorder, projector, or video capture card. USB ports (2) Connect - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 17
Function 1394 port Connects an optional 1394a device such as a scanner, digital camera, or digital camcorder. Smart card slot Supports optional smart cards. 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 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 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 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 19
product from being mishandled or stolen. Battery bay Holds a battery pack. Exhaust vent Provides airflow to hard surface, such as a printer, or a soft surface, such as pillows, thick rugs, or clothing, to block airflow. RJ-11 (modem) jack Connects the modem cable. Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 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 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 21
key or the esc key. Windows logo key In Windows, displays the Windows Start menu. Windows applications key In Windows, displays a shortcut menu for . Arrow keys Moves the cursor around the screen. Keypad keys (16) In Windows, can be used like the keys on an external numeric keypad. num lock - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 22
. ■ Blinking: The computer is in standby. ■ Blinking rapidly: An AC adapter with a higher power rating should be connected. ■ Off: The computer is off or in In hibernation, briefly press to restore from hibernation. If the system has stopped responding and Windows shutdown procedures cannot be used, - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 23
on Presentation mode. QuickLaunch Calculator button Opens the Microsoft Windows calculator. This button can also be reassigned to an Mutes or restores speaker volume. Volume down button Decreases speaker volume. Volume up button Increases speaker volume. Maintenance and Service Guide 1-17 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 24
Product Description The computer pointing device components shown below and described in Table 1-7. Pointing Device Components 1-18 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 25
mouse functions, such as scrolling, selecting, and double-clicking. Fingerprint reader (select models only) Allows a fingerprint logon to Windows instead of using a password. TouchPad buttons (2 or 3 buttons, varying by computer model) Function like the left, middle, and right buttons on an - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 26
battery locking latch Secures the primary battery pack into the battery bay. Docking connector Connects the computer to an optional docking device. Accessory battery connector Connects an optional HP Ultra-Capacity Battery or HP Extended Life Battery. 1-20 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 27
then receive a warning message, remove the device to restore computer functionality. Then contact Customer Care. 6 Hard drive bay Holds the primary hard drive. 7 Primary battery release Releases the primary battery pack from latch the battery bay. 8 Exhaust vents Provides airflow to cool - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 28
replacement parts, and Chapter 5, "Removal and Replacement Procedures," for disassembly steps. The system board provides the following device connections: ■ Audio ■ Display ■ Hard drive ■ Intel Core Duo processors ■ Keyboard and TouchPad ■ Memory modules ■ Mini Card module ■ PC Card Ä CAUTION - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 29
Only authorized technicians trained by HP should repair this equipment. All troubleshooting and repair procedures are detailed not working or will not load. ✎ Some of the Computer Setup menu items listed in this guide may not be supported by your computer. ✎ Pointing devices are not supported in - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 30
Troubleshooting 1. Open Computer Setup by turning on or restarting the computer, and saving your preferences, use the arrow keys to select File > Ignore Changes and Exit. Then follow the instructions on the screen. ❏ To save your preferences and exit Computer Setup, use the arrow keys to select - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 31
Troubleshooting Computer Setup Defaults To return all settings in Computer Setup instructions on the screen. Your preferences go into effect when the computer restarts. ✎ Your password and security settings are not changed when you restore the factory default settings. Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 32
computer and the battery packs in the system. ■ View specification information for the processor, cache and memory size, system ROM, video revision, and keyboard controller version. Replace the configuration settings in Computer Setup with factory default settings. (Password and security settings - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 33
hard drive and optional MultiBay hard drives. ■ Change a DriveLock user or master password. ✎ DriveLock settings are accessible only when you enter Computer Setup by turning on (not restarting) the computer. Enable/disable support for smart card and Java™ Card power-on authentication. ✎ Power - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 34
is destroyed permanently. Select Memory Check Hard Drive Self-Test options Table 2-3 Diagnostics Menu To Do This Run a comprehensive check on system memory. Run a comprehensive self-test on any hard drive in the system or on any optional MultiBay hard drive. 2-6 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 35
Enable/disable CD-ROM boot. ■ Enable/disable Floppy boot. ■ Enable/disable internal network adapter boot and set the boot mode (PXE or RPL). ■ Enable/disable MultiBoot, which sets a boot order that can include most boot devices in the system. ■ Set the boot order. Maintenance and Service Guide 2-7 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 36
When enabled, USB legacy support allows a USB keyboard, mouse, and hub to work in Computer Setup even when a Microsoft Windows operating system is not loaded. ■ The computer to start from bootable USB devices, including a hard drive, diskette drive diskette, or optical drive connected by a USB port - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 37
Troubleshooting Table 2-4 System Configuration Menu (Continued) Select Device configurations (Continued) Built-In Device Options Port Options To Do This ■ Enable/disable SATA Native Support. ■ Enable/disable Dual Core CPU. ■ Enable/disable Secondary Battery Fast Charge and Service Guide 2-9 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 38
2.6-No Video, Part 1" 2.7 "Flowchart 2.7-No Video, Part 2" 2.8 "Flowchart 2.8-Nonfunctioning Docking Device (if applicable)" 2.9 "Flowchart 2.9-No Operating System (OS) Loading" 2.10 "Flowchart 2.10-No OS Loading, Hard Drive, Part 1" 2.11 "Flowchart 2.11-No OS Loading, Hard Drive, Part - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 39
Initial Troubleshooting Begin troubleshooting. N Is there power? Y Go to "Flowchart 2.2-No Power, Part 1." N Beeps, LEDs, or error messages? Y N Is there video? (no boot) Y N Is the OS loading? Y N Is there sound? Y Check LED board, speaker connections. Y Go to "Flowchart 2.6-No Video, Part - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 40
Flowchart 2.2-No Power, Part 1 No power (power LED is off). Remove from docking device (if applicable). N Power up on battery power? Y Reset power.* N Power up on battery power? Y Go to "Flowchart 2.3-No Power, Part 2." N Power up on AC power? Y Reset power.* N Power up on AC power? Y Go to - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 41
debris in battery socket and clean if necessary. Y Power on? Done N Check battery pack by recharging it, moving it to another computer, N Power on? Y Replace power supply (if applicable). N Done Power on? Y Go to "Flowchart 2.4-No Power, Part 3." Done Maintenance and Service Guide 2-13 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 42
. Y Power on? N N Power outlet active? Y Replace power cord. Y Power on? N Done Done Try different outlet. External Internal or external AC adapter? Replace external AC adapter. Internal N Go to "Flowchart Power on? 2.5-No Power, Part 4." Y Done Done 2-14 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 43
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* *NOTE: Replace these items as a set to prevent shorting out among components. Done Maintenance and Service Guide 2-15 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 44
Troubleshooting Flowchart 2.6-No Video, Part 1 No video. Docking Device Stand-alone or docking device? Go to "Flowchart 2.7-No Video, Part 2." *NOTE: To change from internal to external display, use the hotkey combination. Stand-alone Y Internal or external Adjust brightness. Video OK? - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 45
Troubleshooting Flowchart 2.7-No Video, Part 2 Continued from "Flowchart 2.6-No Video, Part 1." Remove computer from docking device, if connected. Adjust display brightness. Check brightness of external monitor. N Y Go to "A" in Video OK? "Flowchart Video OK? Done 2.6-No Video, Part 1." - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 46
on docking device. Reset monitor cable connector at docking device. Y Docking device operating? N Replace docking device. Reinstall computer into docking device. Y Docking Done device Done operating? N Test replacement docking device with new computer. 2-18 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 47
System (OS) Loading No OS loading.* Reset power cord in docking device and power outlet. No OS loading from hard drive, go to "Flowchart 2.10-No OS Loading, Hard Drive, Part 1." No OS loading from diskette drive, go to "Flowchart 2.13-No OS Loading, Diskette Drive." No OS loading from CD-ROM or - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 48
Troubleshooting Flowchart 2.10-No OS Loading, Hard Drive, Part 1 OS not loading from hard drive. Y Nonsystem disk message? N Reseat external hard drive. Y OS loading? N N Boot from CD? Y Check the Setup utility for correct booting order. N Boot from hard drive? Y Done Go to "Flowchart 2.11-No OS - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 49
? Y Y Computer booted? N Go to "Flowchart 2.12-No OS Loading, Hard Drive, Part 3." Create partition, and then format hard drive to bootable C:\ prompt. Format hard drive and bring to a bootable C:\ prompt. Load OS using Operating System disc (if applicable). Maintenance and Service Guide 2-21 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 50
Troubleshooting Flowchart 2.12-No OS Loading, Hard Drive, Part 3 Continued from "Flowchart 2.11-No OS Loading, Hard Drive, Part 2." N System files on hard drive? Y Install OS and reboot. Y Virus on hard drive? N Run SCANDISK and check for bad sectors. N Can bad sectors be fixed? Y Clean virus. - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 51
1. Replace diskette drive. 2. Replace system board. N Y Reset the computer. Refer to OS loading? Done Section 1.2, "Resetting the N Computer," for instructions. Change boot priority using the Setup Utility. Go to "Flowchart 2.17-Nonfunctioning Device." Maintenance and Service Guide 2-23 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 52
bootable disc. Y Boots from CD or DVD? Done N Y Reseat drive. Boots from CD or DVD? N N Booting from another device? Y Done Go to "Flowchart 2.17-Nonfunctioning Device." Y Reset the computer. Booting order correct? N Refer to Section 1.2, "Resetting the Computer," for instructions. Go - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 53
. N Y Computer in docking device (if applicable)? N Undock N Internal audio? Y Go to "Flowchart 2.16-No Audio, Part 2." Go to "Flowchart 2.16-No Audio, Part 2." Replace the docking device. Go to "Flowchart 2.17-Nonfunctioning Device." N Y Audio? Done Maintenance and Service Guide 2-25 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 54
Troubleshooting Flowchart 2.16-No Audio, Part 2 Continued from "Flowchart 2.15-No Audio, Part 1." N Audio driver in OS configured? Y Reload audio drivers. N Correct drivers for application? Y Load drivers audio board (if applicable). 3. Replace system board. 2-26 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 55
? Y Y Any physical device detected? N Replace hard drive. Replace NIC. If integrated NIC, replace system board. Fix or replace broken item. Go to "Flowchart 2.9-No Operating System (OS) Loading." N Device boots properly? Y Done Replace diskette drive. Done Maintenance and Service Guide 2-27 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 56
operating properly. Connect computer to good external keyboard. N External device works? Y Replace system board. Reseat internal keyboard connector (if applicable). N OK? Y Replace internal keyboard or cable. Y Done OK? Done N Replace system board. 2-28 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 57
. Connect computer to good external pointing device. N External device works? Y Replace system board. Reseat internal pointing device connector (if applicable). N OK? Y Replace internal pointing device or cable. Y Done OK? Done N Replace system board. Maintenance and Service Guide 2-29 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 58
? Y Replace jack or have jack activated. Y Digital line? N Connect to nondigital line. N Y NIC/modem configured Reload drivers and OK? Done in OS? reconfigure. Y N Disconnect all power from the computer and open. Reseat NIC/modem (if applicable). Replace the NIC/modem (if applicable - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 59
an illustrated parts breakdown and a reference for spare 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. Serial Number Location Maintenance and Service Guide 3-1 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 60
Illustrated Parts Catalog 3.2 Computer Major Components Computer Major Components 3-2 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 61
Catalog Item 1 2 3 4 Table 3-1 Spare Parts: Computer Major Components Description Spare Part Number Display assemblies (include wireless antenna transceivers and cables) 17.0-inch, WUXGA+WVA with -B71 409913-111 409913-281 409913-141 409913-031 409913-001 Maintenance and Service Guide 3-3 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 62
Illustrated Parts Catalog Computer Major Components 3-4 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 63
Catalog Table 3-1 Spare Parts: Computer Major Components (Continued) Item 4 5 6 7 Description Keyboards sensor board (not illustrated) Fan assembly Processor heat sink (includes thermal paste) Spare Part Number 409911-AA1 409911-131 409911-251 409911-171 409911-231 409911-BA1 409911-071 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 64
Illustrated Parts Catalog Computer Major Components 3-6 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 65
10 11 12 13 Description Spare Part Card slot space saver Memory/Mini Card module cover (includes 3 captive screws) Hard drive cover (includes 2 captive screws) Not illustrated: computer feet (7) USB/audio board (includes audio board cable and USB board cable) 409968-001 Video Service Guide 3-7 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 66
Illustrated Parts Catalog Computer Major Components 3-8 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 67
cable) 409993-001 Speaker 409947-001 PC Card/smart card assembly 409943-001 System board 409959-001 Video board M56, for use with model nx9420 G71, for use with model nw9440 409979-001 417206-001 RTC battery 409953-001 Base enclosure 409942-001 Memory modules, 1-DIMM PC2-5300 2048 MB - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 68
Illustrated Parts Catalog Computer Major Components 3-10 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 69
Catalog Table 3-1 Spare Parts: Computer Major Components (Continued) Item 23 Description Mini Card modules 802.11b/g HS WLAN module for use Guatemala Hong Kong Panama India Indonesia Malaysia Mexico New Zealand Spare Part Number 407107-001 407107-002 Uruguay Venezuela 407107-291 407108-001 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 70
Illustrated Parts Catalog Computer Major Components 3-12 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 71
Illustrated Parts Catalog Table 3-1 Spare Parts: Computer Major Components (Continued) Item 23 Description Mini Card modules (Continued) 802.11a in Japan 802.11b/g GL WLAN module for use in Korea Spare Part Number 407576-002 Norway Oman Slovenia South Africa Spain Sri Lanka Sweden Switzerland - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 72
Illustrated Parts Catalog Computer Major Components 3-14 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 73
: Israel Jordan Kuwait Thailand United Arab Emirates Hard drives 7200 rpm 100 GB 80 GB 409983-001 409991-001 5400 rpm 100 GB 80 GB 60 GB Battery pack (8-cell, 4.8-AH) Spare Part Number 409250-004 Ukraine 409982-001 409981-001 409980-001 398682-001 Maintenance and Service Guide 3-15 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 74
Illustrated Parts Catalog 3.3 Display Assembly Components 3-16 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 75
3 4 5 6 Table 3-2 Display Assembly Components Spare Part Number Information Description Display bezel Display Hinge Kit Display panels top, middle, and bottom brackets) Display Cable Kit Display Screw Kit Spare Part Number 409935-001 409937-001 409978-001 409976-001 409974-001 409989-001 409931 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 76
Description Spare Part Number Plastics Kit Includes: 409944-001 Hard drive cover (includes 2 captive screws, captured by C clips) Memory/Mini Card module cover (includes 3 captive screws, captured by C clips) Computer feet (7) PC Card slot space saver 3-18 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 77
Illustrated Parts Catalog Table 3-4 Cable Kit Spare Part Number Information Item 1 2 3 4 5 6 Description Cable Kit Includes: Bluetooth module cable USB/audio board cable Modem cable Network cable TouchPad cable Microphone cable Spare Part Number 409990-001 Maintenance and Service Guide 3-19 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 78
bezel) DVD±RW and CD-RW Double-Layer Combo Drive with LightScribe DVD±RW and CD-RW Double-Layer Combo Drive 2X Max DVD/CD-RW Combo Drive 8X Max DVD/CD-RW Combo Drive Spare Part Number 409982-001 409981-001 409980-001 409987-001 409986-001 409985-001 409984-001 3-20 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 79
PFC AC adapter 90-watt non-PFC AC adapter External MultiBay II External MultiBay II power cable and stand HP Extended Life Battery HP Docking Station HP Docking Station Miscellaneous Plastics Kit Label Kit MultiBay 8X DVD-ROM Drive MultiBay 24X DVD/CD-RW Combo Drive Nylon carrying case Spare Part - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 80
Table 3-6 Miscellaneous (Not Illustrated) Spare Part Information (Continued) Description Power cords: For use in the United States Korea For use in Israel For use in Switzerland For use in French Canada Spare Part Number 350055-001 350055-011 350055-021 350055-031 350055-061 350055-081 350055-201 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 81
Part Information (Continued) Description Spare Part Number USB 1.1 diskette drive 359118-001 Screw Kit (includes the following screws; refer to Appendix A, "Screw Listing," for more information on specifications Torx8 T8M2.5×7.0 screw ■ Torx8 T8M2.5×4.0 screw Maintenance and Service Guide 3-23 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 82
cord for use in Israel Power cord for use in Switzerland Power cord for use in French Canada External MultiBay II External MultiBay II power cable and stand HP Extended Life Battery MultiBay 8X DVD-ROM Drive MultiBay 24X DVD/CD-RW Combo Drive HP Docking Station 3-24 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 83
Part Number 380089-001 391173-001 391174-001 398682-001 407107-001 407107-002 407107-291 407108-001 407108-002 407108-291 407576-001 Description HP Docking Station Miscellaneous Plastics Kit 90-watt PFC AC adapter 120-watt PFC AC adapter 8-cell, 4.8-AH battery pack 802.11b/g HS WLAN Mini Card - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 84
Parts Catalog Table 3-7 Sequential Part Number Listing (Continued) Spare Part Number 407576-002 407576-003 407576-291 407576-AD1 409250-004 409911-001 Description 802.11a/b/g GL WLAN Mini Card 802.11a/b/g GL WLAN Mini Card module for use in the 802.11b/g GL WLAN Mini Card module for use in the - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 85
Illustrated Parts Catalog Table 3-7 Sequential Part Number Listing (Continued) Spare Part Number 409911-021 409911-031 409911-041 409911-051 409911-061 409911-071 409911- ) Keyboard without pointing stick for use in Latin America (includes pointing stick cable) Maintenance and Service Guide 3-27 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 86
Catalog Table 3-7 Sequential Part Number Listing (Continued) Spare Part Number 409911-171 409911-201 409911-211 409911-221 409911-231 409911-251 409911-281 409911- stick cable) Keyboard without pointing stick for use in Iceland (includes pointing stick cable) 3-28 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 87
Catalog Table 3-7 Sequential Part Number Listing (Continued) Spare Part Number 409913-001 409913-021 409913-031 409913-041 409913-051 409913-061 409913-071 409913 stick cable) Keyboard with pointing stick for use in Greece (includes pointing stick cable) Maintenance and Service Guide 3-29 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 88
Illustrated Parts Catalog Table 3-7 Sequential Part Number Listing (Continued) Spare Part Number 409913-161 409913-171 409913-201 409913-211 409913-221 409913-231 409913-251 cable) Keyboard with pointing stick for use in Israel (includes pointing stick cable) 3-30 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 89
Sequential Part Number Listing (Continued) Spare Part Number Card/smart card assembly Plastics Kit Screw Kit Fan assembly Speaker Switch cover Processor heat sink (includes thermal paste) Video board heat sink for use with M56 video board (includes thermal pads) Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 90
battery Top memory module 1-DIMM, PC2-4200, 1024-MB memory module 1-DIMM, PC2-4200, 2048-MB memory module 1-DIMM, PC2-5300, 256-MB memory module 1-DIMM, PC2-5300, 512-MB memory module 1-DIMM, PC2-5300, 1024-MB memory module 1-DIMM, PC2-5300, 2048-MB memory module 3-32 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 91
Part Number Listing (Continued) Spare Part Video board, M56, for use with model nx9420 5400-rpm, 60-GB hard drive 5400-rpm, 80-GB hard drive 5400-rpm, 100-GB hard drive 7200-rpm, 100-GB hard drive 8X Max DVD/CD-RW Combo Drive (includes bezel and optical drive bracket) Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 92
Cable Kit 7200 rpm, 80 GB hard drive 90-watt non-PFC AC adapter Bluetooth module (includes Bluetooth module cable) Video board heat sink for use with G71 video board (includes thermal pads) 120-watt non-PFC AC adapter Video board, G71, for use with model nw9440 3-34 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 93
chapter provides essential information for proper and safe removal and replacement service. 4.1 Tools Required You will need the following tools to Phillips P0 and P1 screwdrivers ■ Torx8 screwdriver ■ 5.0-mm socket for video board screw locks ■ Flat-bladed screwdriver ■ Tool kit-includes connector - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 94
the work 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 Ä CAUTION: When servicing the - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 95
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, and then shut it down through the operating system. ■ Before removing a diskette drive or optical drive, ensure that a diskette or disc is not in the - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 96
some protection, but in many cases, the discharge contains enough power to alter device parameters or melt silicon junctions. A sudden device exposed to electrostatic discharge might not be affected at all and can work perfectly throughout a normal cycle. Or the device might function normally for - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 97
packaging. ■ Keep electrostatic-sensitive parts in their containers until the parts arrive at static-free workstations. ■ Place items on a grounded are selected to avoid static charging. When grounding is not possible, use an ionizer to dissipate electric charges. Maintenance and Service Guide 4-5 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 98
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. 4-6 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 99
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 workstations with ground cords of one megohm resistance. ■ Static-dissipative tables or floor mats with hard ties to the ground. ■ Field service - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 100
voltage levels generated by different activities. Table 4-1 Typical Electrostatic Voltage Levels Relative Humidity Event 10% 40% 55% Walking across carpet 35,000 V 15,000 V 7,500 V Walking Floor mats 7,500 V Metallized laminate Floor mats 5,000 V 4-8 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 101
in 12 different sizes, that must be removed, replaced, or loosened when servicing the computer. Make special note of each screw and screw lock size Serial Number Report the computer serial number to HP when requesting information or ordering spare parts. The serial number is located on the bottom - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 102
the Computer for Disassembly Battery pack 0 Hard Drive 2 loosened to remove the hard drive cover 1 loosened to remove the hard drive 4 to disassemble the hard drive Computer Feet 0 Bluetooth Module 0 External Memory Module 3 loosened to remove the memory/Mini PCI module compartment - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 103
Disassembly Sequence Chart (Continued) Section 5.10 5.11 5.12 5.13 5.14 5.15 5.16 5.17 5.18 5.19 5.20 5.21 5.22 5.23 5.24 5.25 5.26 5.27 Description Optical Drive Keyboard Internal Memory Module TouchPad Modem Module Switch Cover LED Board Fan Assembly Processor Heat Sink Processor Video - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 104
connected to the computer. 3. Disconnect the power cord. Battery Pack Spare Part Number Information 8-cell, 4.8-Ah battery pack 398682-001 4. Remove the battery pack by following these steps: a. Turn the computer upside down with the rear panel toward you. 5-4 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 105
1 to the right. (The battery pack disengages from the computer.) c. Slide the battery pack release latch 2 to the right. d. Slide the battery pack 3 straight back and remove it. Removing the Battery Pack Reverse the above procedure to install the battery pack. Maintenance and Service Guide 5-5 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 106
Hard Drive Spare Part Number Information 7200 rpm 100 GB 80 GB 409983-001 409991-001 5400 rpm 100 GB 80 GB 60 GB 409982-001 409981-001 409980-001 1. Prepare the computer for disassembly (refer to Section 5.3). 2. Position the computer with the front toward you. 5-6 Maintenance and Service - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 107
the hard drive cover to the computer. 4. Lift the right side of the hard drive cover 2 and swing it to the left. 5. Remove the hard drive cover. ✎ The hard drive cover is included in the Plastics Kit, spare part number 409944-001. Removing the Hard Drive Cover Maintenance and Service Guide 5-7 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 108
Phillips PM2.5×13.0 spring-loaded hard drive retention screw 1. 7. Grasp the mylar tab 2 on the hard drive and slide the hard drive to the left 3 to disconnect it from the system board. 8. Remove the hard drive 4 from the hard drive bay. Removing the Hard Drive 5-8 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 109
Remove the four Phillips PM3.0×3.0 hard drive frame screws 1 from each side of the hard drive. 10. Lift the frame 2 straight up to remove it from the hard drive. Removing the Hard Drive Frame Reverse the above procedure to reassemble and install the hard drive. Maintenance and Service Guide 5-9 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 110
Removal and Replacement Procedures 5.5 Computer Feet The computer feet are adhesive-backed rubber pads. The feet are included in the Plastics Kit, spare part number 409944-001. Replacing the Computer Feet 5-10 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 111
Replacement Procedures 5.6 Bluetooth Module Bluetooth Module Spare Part Number Information Bluetooth module (includes Bluetooth module cable) 409993-001 1. Prepare the computer for disassembly (refer to Section 5.3). 2. Remove the hard drive (Section 5.4). 3. Slide the Bluetooth module 1 out of - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 112
the cover 2 up and swing it toward you. 5. Remove the memory/Mini Card module compartment cover. ✎ The memory/Mini Card module compartment cover is included in the Plastics Kit, spare part number 409944-001. Removing the Memory/Mini Card Module Compartment Cover 5-12 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 113
2 away from the socket at an angle. 8. Remove the memory module. ✎ Memory modules are designed with notches 3 to prevent incorrect installation into the memory module socket. Removing the Memory Module Reverse the above procedure to install a memory module. Maintenance and Service Guide 5-13 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 114
Removal and Replacement Procedures 5.8 Mini Card Module Mini Card Module Spare Part Number Information 802.11b/g HS WLAN module for use in North America 802.11b/g HS WLAN Venezuela 407108-291 407576-001 Paraguay Saudi Arabia Taiwan The United States Vietnam 5-14 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 115
Removal and Replacement Procedures Mini Card Module Spare Part Number Information (Continued) 802.11a/b/g GL WLAN module for use in the MOW 2 Uruguay Venezuela 407576-291 407576-AD1 409250-004 Ukraine 1. Prepare the computer for disassembly (Section 5.3). Maintenance and Service Guide 5-15 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 116
. 5. Remove the Mini Card module 3 by pulling the card away from the socket at an angle. ✎ Mini Card modules are designed with notches 4 to prevent incorrect installation. Removing a Mini Card Module Reverse the above procedure to install a Mini Card module. 5-16 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 117
and Replacement Procedures RTC Battery Spare Part Number Information RTC battery 409953-001 1. Prepare the computer for disassembly (Section 5.3). 2. Remove the memory/Mini Card module compartment cover (Section 5.7). 3. Use a non-conductive, flat-bladed tool to pry the RTC battery out of the - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 118
409987-001 DVD±RW and CD-RW Double-Layer Combo Drive 409986-001 2X Max DVD/CD-RW Combo Drive 409985-001 8X Max DVD/CD-RW Combo Drive 409984-001 1. Prepare the computer for disassembly (Section 5.3). 2. Position the computer with right side toward you. 5-18 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 119
is necessary to replace the optical drive bracket, remove the two Phillips PM2.0×4.0 screws 1 that secure the bracket to the optical drive. 8. Remove the optical drive bracket 2. Removing the Optical Drive Reverse the above procedure to install an optical drive. Maintenance and Service Guide 5-19 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 120
Removal and Replacement Procedures 5.11 Keyboard Keyboard Spare Part Number Information Keyboards with pointing stick (includes Pointing Stick cable) for use in: Brazil The Czech 409913-071 409913-B71 409913-111 409913-281 409913-141 409913-031 409913-001 5-20 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 121
Removal and Replacement Procedures Keyboard Spare Part Number Information (Continued) Keyboards without pointing stick for use -141 409911-031 409911-001 1. Prepare the computer for disassembly (Section 5.3). 2. Position the computer with the front toward you. Maintenance and Service Guide 5-21 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 122
. 6. Lift the rear edge of the keyboard and swing it toward you until it rests on the palm rest. Releasing the Keyboard 5-22 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 123
disconnect the pointing stick cable 4. 9. Remove the keyboard. Disconnecting the Keyboard and Pointing Stick Cables Reverse the above procedure to install the keyboard. Maintenance and Service Guide 5-23 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 124
Memory Module Memory Module Spare Part Number Information 1-DIMM, PC2-5300 2048 MB 1024 MB 512 MB 256 MB 409967-001 409966-001 409965-001 409964-001 1-DIMM, PC2-4200 2048 MB 1024 MB 512 MB 256 MB 409963-001 409962-001 409961-001 409960-001 1. Prepare the computer for disassembly (Section - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 125
2 away from the socket at an angle . 5. Remove the memory module. ✎ Memory modules are designed with notches 3 to prevent incorrect installation into the memory module socket. Removing the Memory Module Reverse the above procedure to install a memory module. Maintenance and Service Guide 5-25 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 126
and Replacement Procedures 5.13 TouchPad TouchPad Spare Part Number Information ✎ All TouchPad spare part kits include a TouchPad cable. TouchPad with keyboards without pointing stick 409955-001 1. Prepare the computer for disassembly (Section 5.3). 2. Remove the keyboard (Section 5.11). 3. Turn - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 127
Removal and Replacement Procedures 4. Remove the Torx8 T8M2.5×9.0 screw that secures the TouchPad to the computer. Removing the TouchPad Screw Maintenance and Service Guide 5-27 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 128
. 8. Disconnect the fingerprint reader cable 3 from the system board. 9. Lift up on the rear edge of the TouchPad 3 to disengage it from the top cover. 10. Remove the TouchPad. Removing the TouchPad 5-28 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 129
the TouchPad board. 13. Remove the TouchPad cable from the clips 2 in the TouchPad frame. ✎ The TouchPad cable is included in the Cable Kit, spare part number 409990-001. Removing the TouchPad Cable Reverse the above procedure to install the TouchPad. Maintenance and - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 130
Removal and Replacement Procedures 5.14 Modem Module Modem Module Spare Part Number Information Modem module 409941-001 1. Prepare the computer for disassembly (Section 5.3). 2. Remove the keyboard (Section 5.11). 3. Remove the TouchPad (Section 5.13). 5-30 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 131
disconnect it from the system board. 6. Disconnect the modem cable 3 from the modem module. ✎ The modem cable is included in the Cable Kit, spare part number 409990-001. 7. Remove the modem module. Removing the Modem Module Reverse the above procedure to install the modem module. Maintenance and - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 132
1. Prepare the computer for disassembly (Section 5.3). 2. Turn the computer upside down with the rear panel toward you. 3. Remove the four Torx8 T8M2.5×4.0 screws in the battery bay that secure the switch cover to the computer. Removing the Switch Cover Screws 5-32 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 133
switch cover 2 disengages from the computer. 7. Remove the switch cover. Removing the Switch Cover Reverse the above procedure to install the switch cover. Maintenance and Service Guide 5-33 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 134
Replacement Procedures 5.16 LED Board LED Board Spare Part Number Information LED board (includes LED board cable) 409957-001 1. Prepare the computer for disassembly (Section 5.3). 2. Remove the switch cover ( the above procedure to install the LED board. 5-34 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 135
and Replacement Procedures 5.17 Fan Assembly Fan Assembly Spare Part Number Information Fan Assembly 409932-001 1. Prepare the computer for disassembly (Section 5.3). 2. Release the keyboard (Section 5.11). the above procedure to install the fan assembly. Maintenance and Service Guide 5-35 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 136
Processor Heat Sink Processor Heat Sink Spare Part Number Information Processor heat sink (includes thermal paste) 409949-001 1. Prepare the computer for disassembly (Section 5.3). 2. Release the keyboard right and remove it. Removing the Processor Heat Sink 5-36 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 137
surfaces of the heat sink 1 and processor 2 each time the heat sink is removed. Thermal paste is included with all heat sink and processor spare part kits. Thermal Paste Locations Reverse the above procedure to install the heat sink. Maintenance and Service Guide 5-37 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 138
Processor Processor Spare Part Number Information ✎ All processor spare part kits include thermal disassembly (Section 5.3), and then remove the following components: a. Keyboard (Section 5.11) b. Fan assembly (Section 5.17) c. Processor heat sink (Section 5.18) 5-38 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 139
the triangle 4 embossed on the processor socket when you install the processor. Removing the Processor Reverse the above procedure to install the processor. Maintenance and Service Guide 5-39 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 140
(includes 409950-001 thermal pads) Video board heat sink for use with G71 video board (includes thermal pads) 413489-001 1. Prepare the computer for disassembly (Section 5.3). 2. Release the keyboard (Section 5.11). 3. Remove the fan assembly (Section 5.17). 5-40 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 141
Replacement Procedures 4. Loosen the four Phillips PM2.5×7.0 screws 1 that secure the video board heat sink to the computer. 5. Remove the two Torx8 T8M2.5×4.0 screws 2 that secure the top cover hinge to the computer. Loosening the Video Board Heat Sink Screws Maintenance and Service Guide 5-41 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 142
and remove it. ✎ Due to the adhesive quality of the thermal pad located between the video board heat sink and the video board, it may be necessary to move the heat sink from side to side to detach the video board heat sink. Removing the Video Board Heat Sink 5-42 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 143
video board heat sink 2 each time the video board heat sink is removed. Thermal paste is included with all video board heat sink and video board spare part kits. Thermal Paste Locations Reverse the above procedure to install the video board heat sink and fan assembly. Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 144
Removal and Replacement Procedures 5.21 Video Board Video Board Spare Part Number Information Video board, M56, for use with model nx9420 Video board, G71, for use with model nw9440 409979-001 417206-001 1. Prepare the computer for disassembly (Section 5.3). 2. Remove the fan assembly (Section - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 145
the top cover hinge. 6. Slide the video board forward 2 at an angle and remove it from the socket. ✎ The video board is designed with a notch 3 to prevent incorrect installation. Removing the Video Board Reverse the above procedure to install the video board. Maintenance and Service Guide 5-45 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 146
the memory/Mini PCI module compartment cover (Section 5.7) and disconnect the wireless antenna cables from the Mini Card module (Section 5.8). 3. Remove the following components: ❏ Switch cover (Section 5.15 ❏ LED board (Section 5.16) ❏ Keyboard (Section 5.11) 5-46 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 147
the two Torx8 T8M2.5×9.0 screws 2 from the computer rear panel that secure the display assembly to the computer. Removing the Display Assembly Screws Maintenance and Service Guide 5-47 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 148
you. 8. Open the computer as far as it will open. 9. Disconnect the display cable 1 from the system board. 10. Remove the wireless antenna cables 2 from the Mini Card compartment and the top cover clips. 11. Disconnect the microphone cable 3 from the system board. Disconnecting the Display Cables - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 149
the display assembly when removing the following screws. Failure to support the display assembly can result in damage to the display assembly and other computer components. 13. Lift the display assembly 2 straight up and remove it. Removing the Display Assembly Maintenance and Service Guide 5-49 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 150
Removal and Replacement Procedures Display Assembly Subcomponents Spare Part Number Information Item Description Spare Part Number Display bezel 409935-001 Display Hinge Kit 409937-001 Display bottom brackets) 409936-001 Display Cable Kit 409938-001 5-50 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 151
3 Two long oblong rubber screw covers 4 Two short oblong rubber screw covers ✎ The display bezel screw covers are available in the Display Screw Kit, spare part number 409940-001. Removing the Display Bezel Screw Covers Maintenance and Service Guide 5-51 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 152
T8M2.5×7.0 screws 2 Two Phillips PM2.0×6.0 screws 3 Two stabilizer clips ✎ The display bezel screws and the stabilizer clips are available in the Display Screw Kit, spare part number 409940-001. Removing the Display Bezel Screws 5-52 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 153
Removal and Replacement Procedures Display bezel Display Assembly Subcomponents Spare Part Number Information 409935-001 16. Flex the inside edges of the left and right sides from the display assembly. 17. Remove the display bezel 3. Removing the Display Bezel Maintenance and Service Guide 5-53 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 154
four Torx8 T8M2.5×4.0 screws 2 that secure the display panel to the display enclosure. ✎ The mylar screw covers are available in the Display Screw Kit, spare part number 409940-001. Removing the Display Panel Screws, Part 1 5-54 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 155
light sensor board to the display enclosure 4 One Torx8 T8M2.5×4.0 screw that secures the display inverter to the display enclosure Removing the Display Panel Screws, Part 2 Maintenance and Service Guide 5-55 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 156
Removal and Replacement Procedures Display Assembly Subcomponents Spare Part Number Information Item Description Spare Part Number Display inverter 409933-001 Display panels 17.0-inch, WUXGA inverter 3 from the display enclosoure. Removing the Display Panel 5-56 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 157
panel cable 3 Backlight cable 22. Remove the ambient light sensor board and display inverter. Removing the Display Inverter and Ambient Light Sensor Board Maintenance and Service Guide 5-57 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 158
Spare Part Number Display Hinge Kit 409937-001 23. If it is necessary to replace a display hinges, remove the four Phillips PM2.0×4.0 screws 1 that secure each hinge to the display panel. 24. Remove the display hinges 2. Removing the Display Hingesw 5-58 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 159
Removal and Replacement Procedures 25. If it is necessary to replace the display latch actuator 1, remove the actuator from the display enclosure by using a small flat-bladed tool to press out on the tabs 2 on the actuator. Removing the Display Latch Actuator Maintenance and Service Guide 5-59 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 160
spring 3 from the tab to which it is attached. 29. Remove the display latch arm and spring. Removing the Display Latch Arm 5-60 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 161
Removal and Replacement Procedures Display Assembly Subcomponents Spare Part Number Information Item Description Spare Part Number Wireless Antenna Kit 409931-001 30. If it is necessary and cables 3. Removing the Wireless Antenna Transceivers and Cables Maintenance and Service Guide 5-61 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 162
the clip in the display enclosure. 35. Remove the microphone and cable 3. ✎ The microphone and cable are available in the Cable Kit, spare part number 409990-001. Removing the Microphone and Cable Reverse the above procedure to reassemble and install the display assembly. 5-62 Maintenance and - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 163
Part Number Information Top cover Fingerprint sensor board 409951-001 409946-001 1. Prepare the computer for disassembly (Section 5.3), and then remove the following components: a. Hard drive (Section 5.4) b. Memory/Mini PCI module compartment cover (Section 5.7) c. Optical drive (Section 5.10 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 164
Removal and Replacement Procedures 3. Remove the fourteen Torx8 T8M2.5×9.0 screws that secure the top cover to the computer. Removing the Top Cover Screws, Part 1 4. Turn the computer right-side up with the front toward you. 5. Remove the two Torx8 T8M2.5×7.0 screws that secure the top cover to the - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 165
cover disengage from the base enclosure. 8. Remove the top cover 3. Removing the Top Cover Reverse the above procedure to install the top cover. Maintenance and Service Guide 5-65 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 166
Speaker Speaker Spare Part Number Information 409947-001 1. Prepare the computer for disassembly (Section 5.3), and then remove the following components: a. Hard drive (Section 5.4) b. Memory/Mini PCI module compartment cover (Section 5.7) c. Optical drive (Section 5.10) d. Keyboard (Section 5.11 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 167
Removal and Replacement Procedures 2. Disconnect the speaker cable 1 from the system board. 3. Remove the speaker 2 from the base enclosure. Removing the Speaker Reverse the above procedure to install the speaker. Maintenance and Service Guide 5-67 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 168
board and installed on the replacement system board: ■ Memory modules (Section 5.7 and Section 5.12) ■ Mini Card card (Section 5.8) ■ RTC battery (Section 5.9) ■ Modem board (Section 5.14) ■ Processor (Section 5.19) ■ PC Card/smart card assembly (Section 5.27) 5-68 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 169
Removal and Replacement Procedures 1. Prepare the computer for disassembly (Section 5.3), and then remove the following components: a. Hard drive (Section 5.4) b. Bluetooth module (Section 5.6) c. Optical drive (Section 5.10) d. Keyboard (Section 5.11) e. Switch cover (Section 5.15) f. LED board ( - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 170
module cable 4 USB/audio board cable ✎ The network cable, modem cable, Bluetooth module cable, and USB/audio cable are available in the Cable Kit, spare part number 409990-001. Disconnecting the System Board Cables 5-70 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 171
Removal and Replacement Procedures 3. Remove the Torx8 T8M2.5×7.0 screw 1 that secures the system board to the base enclosure. 4. Use the optical drive connector 2 to lift the right side of the system board until it rests at an angle. 5. Slide the system board 3 to the right at an - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 172
the base enclosure and remove the cable 2 from the routing channel in the base enclosure. ✎ The modem cable is available in the Cable Kit, spare part number 409990-001. Removing the Modem Connector and Cable 5-72 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 173
the base enclosure and remove the cable 2 from the routing channel in the base enclosure. ✎ The network cable is available in the Cable Kit, spare part number 409990-001. Removing the Network Connector and Cable Maintenance and Service Guide 5-73 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 174
the routing channel 3 in the base enclosure. ✎ The Bluetooth module cable is included with the Bluetooth module spare part kit and is also available in the Cable Kit, spare part number 409990-001. Removing the Bluetooth Module Cable Reverse the above procedures to install the system board. 5-74 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 175
. USB/Audio Board Spare Part Number Information USB/audio board 409968-001 1. Prepare the computer for disassembly (Section 5.3), and then remove the following components: a. Hard drive (Section 5.4) b. Bluetooth module (Section 5.6) c. Optical drive (Section 5.10) d. Keyboard (Section 5.11 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 176
the USB/audio board to the base enclosure. 4. Remove the USB/audio board 4 from the base enclosure. Removing the USB/Audio Board 5-76 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 177
, disconnect the cable from the board. ✎ The USB/audio board cable is included with the USB/audio board spare part kit and is also available in the Cable Kit, spare part number 409990-001. Removing the USB/Audio Board Cable Reverse the above procedure to install the USB/audio board. Maintenance - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 178
Card/Smart Card Assembly Spare Part Number Information PC Card/smart card assembly 409943-001 1. Prepare the computer for disassembly (Section 5.3), and then remove the following components: a. Hard drive (Section 5.4) b. Bluetooth module (Section 5.6) c. Optical drive (Section 5.10 Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 179
Procedures 2. Turn the system board upside down with the PC Card eject button facing away from you. 3. Remove the four Phillips PM2.0×4.0 screws that secure the PC Card/smart card assembly to the system board. Removing the PC Card/Smart Card Assembly Screws Maintenance and Service Guide 5-79 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 180
the system board top-side up with the PC Card eject button facing away from you. 5. Remove the PC Card/smart card assembly from the system board. Removing the PC Card/Smart Card Assembly Reverse the above procedure to install the PC Card/smart card assembly. 5-80 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 181
physical and performance specifications. Table 6-1 Computer Dimensions Metric U.S. Height (front to back) Width Depth 3.3 to 3.8 cm 39.4 cm 27.4 cm 1.3 to 1.5 in 15.5 in 10.8 in Weight HP Compaq nw9440 with 17.0-inch display, optical drive, and 8-cell battery pack HP Compaq nx9420 with 17 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 182
Specifications Table 6-1 Computer (Continued) Relative humidity (noncondensing) Operating Nonoperating 10% to 90% 5% to 95% 10% to 90% 5% to 95% Maximum altitude (unpressurized) Operating (14.7 to 10.1 psia) Nonoperating (14.7 to 4.4 psia) -15 m to 3,048 m -50 ft to 10,000 ft -15 m to 12, - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 183
Character display Total power consumption Viewing angle 24.4 cm 38.1 cm 43.2 cm Up to 16.8 million 200:1 180 nits typical 9.6 in 15.0 in 17.0 in 0.172 × 0.172 mm 1920 × 1200 RGB vertical stripe CCFT 80 × 25 6.0 W +/-65° horizontal, +/-50° vertical typical Maintenance and Service Guide 6-3 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 184
Character display Total power consumption Viewing angle 24.4 cm 38.1 cm 43.2 cm Up to 16.8 million 200:1 180 nits typical 9.6 in 15.0 in 17.0 in 0.197 × 0.197 mm 1680 × 1050 RGB vertical stripe CCFT 80 × 25 7.0 W +/-60° horizontal, +40/-50° vertical typical 6-4 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 185
Specifications Table 6-4 17.0-inch, WXGA+WVA Dimensions Height Width Diagonal Number of colors Contrast ratio Brightness Pixel resolution Pitch Format Configuration Backlight Character display Total power consumption Viewing angle 24.4 cm 38.1 cm 43.2 cm Up to 16.8 million 200:1 180 nits typical - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 186
to 55°C (41°F to 131°F) ✎ Certain restrictions and exclusions apply. Consult Customer Care for details. *1 GB = 1 billion bytes when referring to hard drive storage capacity. Actual accessible capacity is less. †Actual drive specifications may differ slightly. 6-6 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 187
Specifications Table 6-6 Primary 8-cell, Li-Ion Battery Pack Dimensions Height Width Depth Weight Energy Voltage Amp-hour capacity Watt-hour capacity Temperature Operating Nonoperating 2.00 cm 26.80 cm 5.30 cm 0.34 kg 14.4 V 4.8 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 188
Specifications Table 6-7 DVD±RW and CD-RW Combo Drive Applicable disc Center hole diameter Disc diameter Standard disc Mini disc Read: DVD-R, DVD-RW, DVD-ROM (DVD-5, DVD-9, DVD-10, DVD-18), CD-ROM (Mode 1 and 2) CD Digital -RW 12 cm (4.72 in) 8 cm (3.15 in) 6-8 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 189
Specifications Table 6-7 DVD±RW and CD-RW Combo Drive (Continued) Disc thickness 1.2 mm (0.047 in) Track pitch 0.74 µm Access time rate) 1,200 KB/s (150 KB/s at 1X CD rate) 3,600 KB/s (150 KB/s at 1X CD rate) 10,800 KB/s (1,352 KB/s at 1X DVD rate) 5,400 KB/s (1,352 KB/s at 1X DVD rate) 2,700 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 190
Specifications Table 6-8 DVD/CD-RW Combo Drive Applicable disc Center hole diameter Disc diameter Standard disc Mini disc Read: DVD-R, DVD-RW, DVD-ROM (DVD-5, DVD-9, DVD-10, DVD-18) CD-ROM (Mode 1 and 2) CD Digital Audio CD-XA ready (Mode 2, Form 1 and 2) CD-I ready (Mode 2, Form 1 and 2) CD-R, - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 191
Specifications Table 6-8 DVD/CD-RW Combo Drive (Continued) Disc thickness 1.2 mm (0.047 in) Track pitch 0.74 µm Access time CD at 1X CD rate) 3,600 KB/s (150 KB/s at 1X CD rate) 10,800 KB/s (1,352 KB/s at 1X DVD rate) 16.6 MB/s Startup time < 15 seconds Stop time < 6 seconds - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 192
System Function DMA0 Not applicable DMA1* Not applicable DMA2* Not applicable DMA3 Not applicable DMA4 Direct memory access controller DMA5* Available for PC Card DMA6 Not assigned DMA7 Not assigned *PC Card controller can use DMA 1, 2, or 5. 6-12 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 193
DBM SMBus Controller-24C3 Data Fax Modem with SmartCP Diskette drive Parallel port System CMOS/real-time clock Microsoft ACPI-compliant system Intel USB UHCI controller-24C2 Intel 82852/82855 GM/GME Graphic Controller Realtek RTL8139 Family PCI fast Ethernet Controller Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 194
Specifications Table 6-10 System Interrupts (Continued) IRQ11 Intel USB EHCI controller-24CD Intel USB UHCI controller-24C4 Intel USB UHCI controller-24C7 Intel Pro/Wireless 2200BG TI OHCI 1394 host controller TI PCI1410 CardBus controller IRQ12 Synaptics PS/2 TouchPad IRQ13 Numeric data - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 195
chipset configuration registers Unused 87334 "Super I/O" configuration for CPU Counter/timer registers Unused Keyboard controller Port B Unused Keyboard controller Unused NMI enable/RTC Unused DMA page registers Unused Port A Unused Interrupt controller no. 2 Maintenance and Service Guide 6-15 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 196
controller no. 2 Unused Coprocessor busy clear/reset Unused Unused Secondary fixed disk controller Unused Primary fixed disk controller Unused JoyStick (decoded in ESS1688) Unused Entertainment audio Unused Unused Unused Unused Unused Unused Reserved serial port 6-16 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 197
FM synthesizer-OPL3 Unused VGA Reserved (parallel port/no EPP support) VGA PC Card controller in CPU Unused Internal modem "A" diskette controller Serial port (COM1/default) PCI configuration index register (PCIDIVO-1) PCI configuration data register (PCIDIVO-1) Maintenance and Service Guide 6-17 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 198
00FFFFFF 01000000-047FFFFF 04800000-07FFFFFF 08000000-080FFFFF 08200000-FFFEFFFF FFFF0000-FFFFFFFF System Function Base memory Video memory Video BIOS Unused System BIOS Extended memory Super extended memory Unused Video memory (direct access) Unused System BIOS 6-18 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 199
part number 409940-001. Table A-1 Phillips PM3.0×3.0 Screw Head mm Color Qty. Length Thread Width Black 4 3.0 mm 3.0 mm 5.0 mm Where used: 4 screws that secure the hard drive to the hard drive frame (documented in Section 5.4) Phillips PM3.0×3.0 Screw Locations Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 200
Screw Head mm Color Qty. Length Thread Width Black 2 17.0 mm 2.5 mm 5.0 mm Where used: 2 screws that secure the hard drive cover to the hard drive (screws are captured on the cover by C clips; documented in Section 5.4) Phillips PM2.5×17.0 Screw Locations A-2 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 201
-Loaded Screw Head mm Color Qty. Length Thread Width Silver 1 13.0 mm 2.5 mm 6.0 mm Where used: One screw that secures the hard drive to the computer (screw is captured on the cover by C clip; documented in Section 5.4) Phillips PM2.5×13.0 Screw Location Maintenance and Service Guide A-3 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 202
Thread Width Black 3 4.0 mm 2.5 mm 5.0 mm Where used: 3 screws that secure the memory/Mini Card module compartment cover to the computer (screws are captured on the hard drive frame by C clips; documented in Section 5.7) Phillips PM2.5×4.0 Screw Locations A-4 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 203
Screw Listing Table A-5 Phillips PM2.0×4.0 Screw Head mm Color Qty. Length Thread Width Silver 18 4.0 mm 2.0 mm 4.5 mm Where used: 2 screws that secure the Mini Card WLAN module to the computer (documented in Section 5.8) Phillips PM2.0×4.0 Screw Locations Maintenance and Service Guide A-5 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 204
A-5 Phillips PM2.0×4.0 Screw (Continued) Head mm Color Qty. Length Thread Width Silver 18 4.0 mm 2.0 mm 4.5 mm Where used: 2 screws that secure the optical drive bracket to the optical drive (documented in Section 5.10) Phillips PM2.0×4.0 Screw Locations A-6 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 205
18 4.0 mm 2.0 mm 4.5 mm Where used: 2 screws that secure the modem module to the computer (documented in Section 5.14) Phillips PM2.0×4.0 Screw Locations Maintenance and Service Guide A-7 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 206
4.0 mm 2.0 mm 4.5 mm Where used: 8 screws that secure the display hinge to the display panel (documented in Section 5.22) Phillips PM2.0×4.0 Screw Locations A-8 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 207
Phillips PM2.0×4.0 Screw (Continued) Head mm Color Qty. Length Thread Width Silver 18 4.0 mm 2.0 mm 4.5 mm Where used: 4 screws that secure the PC Card/smart card assembly to the system board (documented in Section 5.27) Phillips PM2.0×4.0 Screw Locations Maintenance and Service Guide A-9 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 208
Head mm Color Qty. Length Thread Width Black 26 9.0 mm 2.5 mm 5.0 mm Where used: 1 One screw that secures the optical drive to the computer (documented in Section 5.10) 2 Four screws that secure the keyboard to the computer (documented in Section 5.11) 3 One screw that secures the TouchPad to - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 209
26 9.0 mm 2.5 mm 5.0 mm Where used: 6 screws that secure the display assembly to the computer (documented in Section 5.22) Torx8 T8M2.5×9.0 Screw Locations Maintenance and Service Guide A-11 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 210
Screw Listing Table A-6 Torx8 T8M2.5×9.0 Screw (Continued) Head mm Color Qty. Length Thread Width Black 26 9.0 mm 2.5 mm 5.0 mm Where used: 14 screws that secure the top cover to the computer (documented in Section 5.23) Torx8 T8M2.5×9.0 Screw Locations A-12 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 211
Screw Listing Table A-7 Torx8 T8M2.5×4.0 Screw Head mm Color Qty. Length Thread Width Black 20 4.0 mm 2.5 mm 5.0 mm Where used: 4 screws that secure the switch cover to the computer (documented in Section 5.15) Torx8 T8M2.5×4.0 Screw Locations Maintenance and Service Guide A-13 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 212
Screw Listing Table A-7 Torx8 T8M2.5×4.0 Screw (Continued) Head mm Color Qty. Length Thread Width Black 20 4.0 mm 2.5 mm 5.0 mm Where used: 4 screws that secure the LED board to the computer (documented in Section 5.16) Torx8 T8M2.5×4.0 Screw Locations A-14 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 213
Table A-7 Torx8 T8M2.5×4.0 Screw (Continued) Head mm Color Qty. Length Thread Width Black 20 4.0 mm 2.5 mm 5.0 mm Where used: 2 screws that secure the video board heat sink to the computer (documented in Section 5.20) Torx8 T8M2.5×4.0 Screw Locations Maintenance and Service Guide A-15 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 214
4.0 mm 2.5 mm 5.0 mm Where used: 2 screws that secure the display assembly to the computer (documented in Section 5.22) Torx8 T8M2.5×4.0 Screw Locations A-16 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 215
4.0 mm 2.5 mm 5.0 mm Where used: 4 screws that secure the display panel to the display enclosure (documented in Section 5.22) Torx8 T8M2.5×4.0 Screw Locations Maintenance and Service Guide A-17 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 216
in Section 5.22) 3 One screw that secures the inverter board to the display enclosure (documented in Section 5.22) Torx8 T8M2.5×4.0 Screw Locations A-18 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 217
Screw Listing Table A-8 Torx8 T8M2.5×19.0 Screw Head mm Color Qty. Length Thread Width Black 1 19.0 mm 2.5 mm 5.0 mm Where used: One screw that secures the LED board to the computer (documented in Section 5.16) Torx8 T8M2.5×19.0 Screw Location Maintenance and Service Guide A-19 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 218
Screw Listing Table A-9 Torx8 T8M2.5×7.0 Screw Head mm Color Qty. Length Thread Width Black 11 7.0 mm 2.5 mm 5.0 mm Where used: 2 screws that secure the fan assembly to the computer (documented in Section 5.17) Torx8 T8M2.5×7.0 Screw Locations A-20 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 219
7.0 mm 2.5 mm 5.0 mm Where used: 6 screws that secure the display bezel to the display assembly (documented in Section 5.22) Torx8 T8M2.5×7.0 Screw Locations Maintenance and Service Guide A-21 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 220
Screw Listing Table A-9 Torx8 T8M2.5×7.0 Screw (Continued) mm Color Qty. Length Thread Black 11 7.0 mm 2.5 mm Where used: 2 screws that secure the top cover to the computer (documented in Section 5.23) Head Width 5.0 mm Torx8 T8M2.5×7.0 Screw Locations A-22 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 221
2.5 mm 5.0 mm Where used: One screw that secures the system board to the base enclosure (documented in Section 5.25) Torx8 T8M2.5×7.0 Screw Location Maintenance and Service Guide A-23 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 222
Screw Head mm Color Qty. Length Thread Width Silver 10 7.0 mm 2.5 mm 5.0 mm Where used: 4 screws that the processor heat sink to the computer (screws are secured to the heat sink by C clips; documented in Section 5.18) Phillips PM2.5×7.0 Screw Locations A-24 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 223
) Head mm Color Qty. Length Thread Width Silver 10 7.0 mm 2.5 mm 5.0 mm Where used: 4 screws that secure the video board heat sink to the computer (screws are secured to the heat sink by C clips; documented in Section 5.20) Phillips PM2.5×7.0 Screw Locations Maintenance and Service Guide A-25 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 224
Table A-10 Phillips PM2.5×7.0 Screw (Continued) Head mm Color Qty. Length Thread Width Silver 10 7.0 mm 2.5 mm 5.0 mm Where used: 2 screws that secure the display panel to the display enclosure (documented in Section 5.22) Phillips PM2.5×7.0 Screw Locations A-26 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 225
Table A-11 Hex Socket HM5.0×9.0 Screw Locks Head mm Color Qty. Length Thread Width Silver 2 9.0 mm 5.0 mm 5.0 mm Where used: 2 screw locks that secure the video board to the computer (documented in Section 5.21) HM5.0×9.0 Screw Lock Locations Maintenance and Service Guide A-27 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 226
2.0 mm 4.5 mm Where used: 2 screws that secure the display bezel to the display enclosure (documented in Section 5.22) Phillips PM2.0×6.0 Screw Locations A-28 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 227
. ✎ HP installed drivers, utilities, and applications can be copied to a CD or to a DVD using HP Backup and Recovery Manager. ✎ Formatted DVD±RW discs and DVD±RW double-layer discs are not compatible with HP Backup and Recovery Manager. ✎ The computer must be connected to external power before you - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 228
HP system restore points. ■ Schedule backups. Backing Up Specific Files or Folders You can back up specific files or folders to the hard drive, to an optional external hard drive, or to discs techniques. 7. Click Next. 8. Follow the on-screen instructions. B-2 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 229
are saving the full factory image, including the Windows operating system, software applications, and all personal files and folders. ✎ A copy of the entire hard drive image can be stored on another hard drive, on a network drive, or on recovery discs that you create. ✎ This process may take over - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 230
points. This allows you to save a snapshot of your hard drive at a specific point in time. You can then recover back to that point make a copy of changes made after that time. HP recommends that you create recovery points ■ Before you add -screen instructions. B-4 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 231
, on another drive, or on external recovery discs. ✎ Before using HP Backup and Recovery Manager, try repairing the system by running Microsoft Windows System Restore. For more information, select Start > Help and Support, and then search for "System Restore." Maintenance and Service Guide B-5 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 232
available space on the hard drive by deleting the recovery partition. However, doing this is not recommended. If you delete this partition, you will lose any information that is on the partition. ✎ Only one set of recovery discs can be created for this computer. B-6 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 233
a Recovery Performing a Recovery from the Recovery Discs To perform a recovery from the recovery discs: 1. Back up all personal files. 2. Insert the first recovery disc into the optical drive and restart the computer. 3. Follow the on-screen instructions. Maintenance and Service Guide B-7 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 234
initiate a recovery from the hard drive recovery partition: 1. Back up all personal files. 2. Restart the computer, and then press f11 before the Windows operating system loads. 3. Click a recovery option, and then click Next. 4. Follow the on-screen instructions. B-8 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 235
backlight. Careful handling should be exercised when removing these components. ✎ Materials Disposal This HP product contains mercury in the backlight in the display assembly that might require special handling at Industries Alliance (EIA) at http://www.eiae.org. Maintenance and Service Guide C-1 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 236
disassembly instructions for the display assembly. The display assembly must be disassembled to gain access to the backlight 1 and the liquid crystal display (LCD) panel 2. ✎ Disassembly provided in this appendix are general disassembly instructions. Specific details, such as screw sizes, - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 237
Display Component Recycling Perform the following steps to disassemble the display assembly: 1. Remove all screw covers 1 and screws 2 that secure the display bezel to the display assembly. Removing the Display Bezel Screw Covers and Screws Maintenance and Service Guide C-3 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 238
Display Component Recycling 2. Lift up and out on the left and right inside edges 1 and the top and bottom inside edges 2 of the display bezel until the bezel disengages from the display assembly. 3. Remove the display bezel 3. Removing the Display Bezel C-4 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 239
Display Component Recycling 4. Disconnect all display panel cables 1 from the display inverter and remove the inverter 2. Removing the Display Inverter Maintenance and Service Guide C-5 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 240
Display Component Recycling 5. Remove all screws 1 that secure the display panel assembly to the display enclosure. 6. Remove the display panel assembly 2 from the display enclosure. Removing the Display Panel Assembly C-6 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 241
Display Component Recycling 7. Turn the display panel assembly upside down. 8. Remove all screws that secure the display panel frame to the display panel. Removing the Display Panel Frame Screws Maintenance and Service Guide C-7 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 242
Display Component Recycling 9. Use a sharp-edged tool to cut the tape 1 that secures the sides of the display panel to the display panel frame. 10. Remove the display panel frame 2 from the display panel. Removing the Display Frame C-8 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 243
Display Component Recycling 11. Remove the screws 1 that secure the backlight cover to the display panel. 12. Lift the top edge of the backlight cover 2 and swing it forward. 13. Remove the backlight cover. Removing the Backlight Cover Maintenance and Service Guide C-9 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 244
Display Component Recycling 14. Turn the display panel right-side up. 15. Remove the backlight cables 1 from the clip 2 in the display panel. Releasing the Backlight Cables C-10 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 245
Display Component Recycling 16. Turn the display panel upside down. 17. Remove the backlight frame from the display panel. Removing the Backlight Frame Maintenance and Service Guide C-11 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 246
avoid damaging this component and causing exposure to the mercury. 18. Slide the backlight out of the backlight frame. Removing the Backlight C-12 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 247
3 from the display rear panel. 22. Release the tape 4 that secures the LCD panel to the display rear panel. Releasing the LCD Panel Maintenance and Service Guide C-13 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 248
Display Component Recycling 23. Remove the LCD panel. Removing the LCD Panel 24. Recycle the LCD panel and backlight. C-14 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 249
D Connector Pin Assignments Table D-1 Audio-Out (Headphone) Pin Signal 1 Audio out, left channel 2 Audio out, right channel Pin Signal 3 Ground Maintenance and Service Guide D-1 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 250
Connector Pin Assignments Table D-2 Audio-In (Microphone) Pin Signal 1 Audio signal in 2 Audio signal in Pin Signal 3 Ground Table D-3 Universal Serial Bus Pin Signal 1 +5 VDC 2 Data - D-2 Pin Signal 3 Data + 4 Ground Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 251
Connector Pin Assignments Table D-4 S-Video-Out Pin Signal 1 S-VHS color (C) signal 2 Composite video signal 3 S-VHS intensity (Y) signal 4 S-VHS color ground Pin Signal 5 TV-CD 6 S-VHS intensity ground 7 Composite video ground Maintenance and Service Guide D-3 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 252
Monitor Pin Signal 1 Red analog 2 Green analog 3 Blue analog 4 Not connected 5 Ground 6 Ground analog 7 Ground analog 8 Ground analog Pin Signal 9 +5 VDC 10 Ground 11 Monitor detect 12 DDC 2B data 13 Horizontal sync 14 Vertical sync 15 DDC 2B clock D-4 Maintenance and - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 253
Connector Pin Assignments Table D-6 RJ-11 (Modem) Pin Signal 1 Unused 2 Tip 3 Ring Pin Signal 4 Unused 5 Unused 6 Unused Maintenance and Service Guide D-5 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 254
Connector Pin Assignments Table D-7 RJ-45 (Network) Pin Signal 1 Transmit + 2 Transmit - 3 Receive + 4 Unused Pin Signal 5 Unused 6 Receive - 7 Unused 8 Unused D-6 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 255
or 220 to 240 volts AC. The power cord set included with the computer meets the requirements for use in the country where the equipment is purchased. Power cord sets for use in other countries must meet the requirements of the country where the computer is used. Maintenance and Service Guide E-1 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 256
voltage rating of 125 or 250 V AC, as required by each country's power system. ■ The appliance coupler must meet the mechanical configuration of an EN 60 320/IEC 320 Standard Sheet C13 connector for mating with the appliance inlet on the back of the computer. E-2 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 257
Set Requirements Country-Specific Requirements 3-Conductor Power Cord Set Requirements Country/Region Accredited Agency Applicable Note Number Australia EANSW 1 Austria grounding type with a Japanese Industrial Standard C8303 (7 A, 125 V) configuration. Maintenance and Service Guide E-3 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 258
Power HO5VV-F, 3-conductor, 1.0 mm² conductor size. Power cord set fittings (appliance coupler and wall plug) 3-conductor, 0.75 mm² conductor size. Power cord set fittings (appliance coupler and wall , 3-conductor, 0.75 mm² conductor size. Power cord set fittings (appliance coupler and wall plug - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 259
port 1-11 A AC adapter, spare part numbers 3-21, 3-25, 3-34 accessory battery connector 1-20 arrow keys 1-15 audio troubleshooting 2-25 audio-in jack location 1-9 pin assignments D-2 audio-out jack location 1-9 pin assignments D-1 B base enclosure, spare part number 3-9, 3-31 battery bay 1-13, 1-20 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 260
network D-6 RJ-11 D-5 RJ-45 D-6 S-Video-out D-3 Universal Serial Bus (USB) D-2 connectors, service considerations 4-2 D design overview 1-22 Digital Media Slot 1-7 disassembly sequence chart 5-2 diskette drive OS loading problems 2-23 precautions 4-3 spare part number 3-24 display assembly removal - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 261
Kit, spare part number 3-17, 3-31, 5-50 docking connector 1-20 docking device, troubleshooting 2-18 drive light 1-7 drives, preventing damage 4-3 DVD/CD-RW Combo Drive OS loading problems 2-24 precautions 4-3 removal 5-18 spare part numbers 3-9, 3-20, 3-33, 3-34, 5-18 specifications 6-10 DVD±RW and - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 262
loading problems 2-20 precautions 4-3 removal 5-6 spare part numbers 3-15, 3-20, 3-33, 3-34 specifications 6-6 hard drive bay 1-21 hard drive cover illustrated 3-18 removal 5-7 headphone jack location 1-9 pin assignments D-1 HP Docking Station, spare part number 3-21, 3-24 HP Extended Life Battery - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 263
4-3 removal 5-18 spare part numbers 3-9, 3-20, 3-21, 5-18 specifications 6-8, 6-10 optical drive bracket, removal 5-19 P packing precautions 4-5 password clearing 1-4 PC Card slot space saver 3-18 PC Card slots 1-11 PC Card/smart card assembly removal 5-78 Maintenance and Service Guide Index-5 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 264
4-2 smart card slot 1-11 speaker location 1-7 removal 5-66 spare part number 3-9, 3-31, 5-66 specifications battery pack 6-7 computer 6-1 DVD/CD-RW Combo Drive 6-10 DVD±RW and CD-RW Combo Drive 6-8, 6-10 hard drive 6-6 I/O addresses 6-15 interrupts 6-13 Index-6 Maintenance and Service Guide - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 265
precautions 4-5 troubleshooting audio 2-25 docking device 2-18 flowcharts 2-10 keyboard 2-28 modem 2-30 network 2-30 nonfunctioning device 2-18, 2-27 OS loading 2-19 overview 2-1 pointing device 2-29 power 2-12 video 2-16 U Universal Serial Bus (USB) diskette drive, spare part number 3-23 - HP Nx9420 | HP Compaq nx9420 and nx9440 Notebook PC - Maintenance and Service Gu - Page 266
1-17 W Windows applications key 1-15 Windows logo key 1-15 wireless antenna disconnecting 5-16 illustrated 3-16 removal 5-61 Wireless Antenna Kit, spare part number 3-17, 3-31, 5-50 wireless button 1-17 wireless light 1-6, 1-17 workstation precautions 4-6 Index-8 Maintenance and Service Guide
Maintenance and Service
Guide
HP Compaq nw9440 Notebook PC
HP Compaq nx9420 Notebook PC
Document Part Number: 412725-003
May 2007
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.