Wireless LAN (selected models)

Input/Output

Expandability

Security Features

Environmental Limits

Major ICs

Table 1-5. Pavilion zt1000/xz300 and Omnibook xt1500 Series Accessories
Accessory Specific Accessories F3494B F5102A F3172A F3172B F4494A F4495A F4496A F2297A F4600A/F4814A F2135C F2136B F2196A/F4862A F4863A F2100A F4815A F5101A F5103A F1606/7/8A2297A F1771A F1778A F1778B F2020A F1645A F1747A Other Accessories D9510B USB Floppy Simple port replicator for PL-KV only (This SPR is compatible with 4.0 and backwards-compatile with Z3x) SPR for PL-AN only 8-cell Li-lon battery 8-cell high capacity battery 128MB PC2100 DDR SDRAM 266 MHz 256MB PC2100 DDR SDRAM 266MHz 512MB PC2100 DDR SDRAM 266MHz 24V Car adapter (Europe only) 75W AC adapter w/PFC Wireless Comm. Access point AP 2000 Wireless Comm. PC Card (128-bit) Gold card/Ruby card 3COM Bluetooth PC Card Wireless AccessPoint for SMB USB optical mouse (PL-AN only) USB optical mouse (PL-KV only) MCD USB floppy (N. America PL-KV only) USB-to-serial adapter (PLAN only) Carrying Cases (ballistic nylon/leather/executive) Universal Carrying Case Promotional Carrying Case (NAM & AP) Standard Carrying Case (Europe) Executive Leather Case (Europe) Kensington Lock Defcon Lock Description
Cross-Platform Accessories
Other Available Accessories

Internal Design

The motherboard PCA is the central component of the notebooks design, and plays a role in virtually all system functions. The CPU module and most other subsystems connect to the motherboard. The following figure shows the electrical connections among the notebooks replaceable electronic modules. In addition, the table on page 1-15 lists the roles that the replaceable modules play in each of the notebooks functional subsystems.

Speakers

CPU module

Display assembly

Keyboard cover switch PCA

Mini-PCI card

Top case
touch/scroll pads, click buttons, CD player, IR (optional)

Motherboard PCA

CD/DVD drive

PCMCIA card

PCMCIA socket

SDRAM modules

SD-MMC card

SD-MMC socket

Volume control PCA

Hard disk drive

Audio PCA

Bluetooth PCA

USB PCA

Keyboard

Battery
Figure 1-8. Replaceable Module Diagram
Table 1-6. Functional Structure
Function Bootup Components Used CPU module Motherboard Hard disk drive CD/DVD drive module CPU module Motherboard SDRAM module Battery Motherboard Keyboard cover switch PCA AC adapter Motherboard Display assembly Motherboard Hard disk drive Motherboard Keyboard Keyboard cover CD player PCA Motherboard Top case Motherboard Display assembly USB PCA Volume control PCA Speakers Motherboard Top case Keyboard cover switch PCA CD player PCA Motherboard Motherboard USB PCA Motherboard PCMCIA sockets Motherboard Motherboard CD player PCA Display assembly Motherboard Mini-PCI PCA Bluetooth PCA USB PCA Motherboard Motherboard Component Roles Main processor. Primary system circuitry. First source of disk-based startup code. Second source of disk-based startup code. Main processor, numeric data processor, L1 and L2 cache. Primary system circuitry. Video RAM (shared). Changeable RAM (2 slots). Power storage. Power control circuitry, AC adapter socket, lid switch, reset switch, power supply. Power button. AC-to-DC converter. Video controller, display drivers, LVDS processing, display/graphics controller. Display output, backlight, power converter for backlight. Hard disk controller. Hard disk mechanism. Keyboard controller, keyboard BIOS. Key switches. One-Touch buttons. CD player buttons. Keyboard BIOS. Touch/scroll pad sensors, click buttons. Audio controller, audio decoder, speaker amplifier, external microphone jack. Microphone. Headphone jack. Volume control. Sound output. LED circuitry, keyboard controller. Status LEDs. Status LEDs. CD/DVD status display. I/O controller, parallel connector. Bus controller, USB connectors. USB connectors. PCMCIA controller. PCMCIA connectors. SD/MMC controller SD/MMC connector I/O controller. Infrared transmitter/receiver. Antennas, on-off button, indicator light. I/O controller. Radio PCA circuitry. Radio PCA circuitry. On-off button, indicator light. Docking logic, docking connector. PC card controller, PC card connector.

Left speaker

Primary SDRAM

Display assy

Right speaker

Modules on path A CD player PCA Infrared PCA Hard disk drive guide Optical disk drive guides

Heatsink Top case

CPU module If removing motherboard or bottom case, modules on path B

Hinge saddles

Audio PCA Volume control PCA Docking doors PCMCIA doors PCMCIA socket
Motherboard or bottom case
Figure 2-1. Disassembly Flow
Table 2-2. Required Equipment
#0 Phillips screwdriver, preferably magnetized. Small flat-blade screwdriver.5 mm hex driver.
Table 2-3. Recommended Screw Torques
Screw Thread Size M2.5 (211 mm long) M3 Torque (cm-kgf) 3.0 3.5 3.0 3.5 Torque (in-lbf) 2.6 3.0 2.6 3.0

Removing the Battery

(User-Replaceable)

Required Equipment

Removal Procedure
Slide the batterys release latch in the direction of the arrow on the latch, then lift the battery out of its compartment.
Figure 2-2. Removing the Battery Reassembly Notes
Insert the front end of the battery into the battery compartment, then press the back end in until the battery clicks into place.
Removing a Plug-In Module
Slide the module release latch in the direction shown by the arrow on the latch, and remove the module.
Figure 2-3. Releasing the Plug-in Module
Removing the Hard Disk Drive

#0 Phillips screwdriver.

1. Unplug the AC adapter, if present, and remove the battery. 2. On the bottom of the unit, remove both hard drive retaining screws.

Screws, M2.54mm

Figure 2-4. Removing the Hard Disk Drive
3. Carefully pull the hard drive out of the notebook. 4. Remove all four screws from the hard drive tray and drive case, then lift the drive out of the tray.

Screws, M2.5x4mm (2)

Figure 2-5. Removing the Hard Disk Tray Reassembly Notes
Insert the connector end of the drive through the opening in the tray, then lower the drive into place. Carefully slide the hard drive assembly into its compartment. Press firmly to make sure the connector seats properly.
Important If you are installing a new hard disk drive, install the factory software and operating system on the drive before loading any additional softwaresee Recovering and Reinstalling Software, below.
Recovering and Reinstalling Software
Use the Recovery CDs to reinstall the original factory software and operating system. The Recovery CDs also provide all HP notebookspecific Windows drivers, which are available in the following locations:

3. Store the serial number and service ID as directed.

Battery (page 2-4). Plug-in module (page 2-5). Hard disk drive (page 2-6). Keyboard cover (page 2-9). Keyboard (page 2-11). SDRAM modules (page 2-13). Mini-PCI card (page 2-16). Display assembly (page 2-18). Fan and heatsink (page 2-22). CPU module (page 2-25). Top case (page 2-27). Hinge saddles (page 2-30).
3. Remove the retaining screws from the hard disk drive guide, and lift the guide off of the motherboard. 4. Remove the retaining screw from each CD/DVD disk drive guide, and life the guides off of the motherboard.
5. Remove both retaining screws from the motherboard. 6. Remove the four standoffs located near the CPU module. 7. Disconnect the audio PCA and remove it from the motherboard. 8. Lift the front edge of the motherboard slightly, then carefully lift the motherboard forward and out of the bottom case.
Screws, M24mm (2) Standoffs, 5mm (4)
Figure 2-23. Removing the Motherboard Reassembly Procedure
When reinstalling the motherboard, see Reinstalling the Motherboard on page 2-34. When reinstalling the bottom case, see Replacing the Bottom Case on page 2-35.
Reinstalling the Motherboard

Reassembly Procedure

1. Insert the I/O connectors through their openings in the bottom case, then lower the motherboard into place. 2. Make sure the PC card eject button fits into its slot in the bottom case. 3. Make sure the alignment posts in the bottom casenear the CPU module and PC card guidefit through the corresponding openings in the motherboard.
After installing a new motherboard, you must electronically transfer to it the serial number and service ID from the previous motherboard. 1. Exit Windows and boot to a DOS prompt. 2. Run ESN.EXE from the same source you used when saving the serial number and service ID from the previous motherboard:
3. Install the serial number and service ID.
If you are prompted for the serial number, type the serial number shown on the bottom of the case. If a serial number has already been stored, you must call an HP support center to change it (see page vi).
Replacing the Bottom Case

Installation Procedure

1. Install a new Microsoft Product ID label. 2. Transfer the old serial number label and install a new overlay, or create a new serial number label using the steps on the following page. 3. If you need to install or replace the docking doors or PCMCIA doors, refer to the figures below.

Figure 2-24. Installing the Docking Doors
Figure 2-25. Installing the PCMCIA Doors
Installing a New Serial Number Label
Download the latest version of the serial number label template (Microsoft Word format) from the Partnership Web site (see page vi) under Support/Service in Technical Support Information, or from http://www.mcd.hp.com. Store it with other Word templates on a PC connected to a laser printer. The latest version includes fields for warranty period and manufacturing location. 1. Open a new document based on the serial label template. 2. Enter the information from the old serial label, and print the new label on plain white paper. The new label does not have barcodes. 3. Carefully cut out the new serial label just inside the border and place it into the inner recess in the bottom case. The bottom of the label goes toward the front of the case. 4. While holding the paper label in place, attach a serial label overlay into the outer recess. It covers and protects the serial label.
HP Serial Number (S)TW711A1234 (1P) F2072 W EA MFG# TW711A1234

Made in Taiwan

Figure 2-26. Example of Serial Number Label
Removing Notebook Components
1. Unplug the AC adapter, if present, and remove the battery. 2. Remove the assemblies and follow the additional steps given in the table below.
Table 2-5. Removing Notebook Components
Component Antenna, wireless Bezel, display Card, mini-PCI Case, bottom Case, top Cover, keyboard Display assembly Doors, docking Removal Procedure See page 2-20. See page 2-20. See page 2-16. See page 2-32. See page 2-27. See page 2-9. See page 2-18. Plug-in module (page 2-5). Hard disk drive (page 2-6). Keyboard cover (page 2-9). Keyboard (page 2-11). SDRAM modules (page 2-13). Mini-PCI card (page 2-16). Display assembly (page 2-18). Fan and heatsink (page 2-22). CPU module (page 2-25). Top case (page 2-27). Hinge saddles (page 2-30). Motherboard (page 2-32). See Figure 2-24 on page 2-35. Additional Steps

Component Doors, PCMCIA

Removal Procedure Plug-in module (page 2-5). Hard disk drive (page 2-6). Keyboard cover (page 2-9). Keyboard (page 2-11). SDRAM modules (page 2-13). Mini-PCI card (page 2-16). Display assembly (page 2-18). Fan and heatsink (page 2-22). CPU module (page 2-25). Top case (page 2-27). Hinge saddles (page 2-30). Motherboard (page 2-32). See page 2-22. Keyboard cover (page 2-9). Keyboard (page 2-11). Display assembly (page 2-18). Top case (page 2-27). Keyboard cover (page 2-9). Keyboard (page 2-11). Display assembly (page 2-18). Top case (page 2-27). See page 2-22. See page 2-11. See page 2-25. Keyboard cover (page 2-9). Keyboard (page 2-11). Display assembly (page 2-18). Top case (page 2-27). Hinge saddle, left (page 2-30). See page 2-20. See page 2-15 See page 2-32.

Missing parts. Broken plastic parts. Parts not original to the unit. Damaged or missing keys on the keyboard.
Table 3-2 on page 3-5 includes additional criteria for determining customer abuse to specific parts of the unit.
Important Parts damaged by customer abuse are not covered by the warranty.
Troubleshooting the Problem
Record pertinent information about the notebook:
Model and serial number. Operating system and version. Software version (hidden file c:\version.inf). BIOS version. Accessories and peripherals used.

Analyze the problem:

Observe Symptoms. Using the customers information, try to duplicate the problem. Determine how the problem differs from proper behavior. Also, note the functions that do work properly. Separate Problems. If there is more than one symptom, separate them into distinct problems. Consider Causes. Keep in mind possible causes for each problem. Use the diagnostic tools and
troubleshooting suggestions to help find the possible causes.
The e-DiagTools diagnostic program tests most of the notebooks components using
automatic and interactive tests, and will be your primary troubleshooting tool. Other tools include the power-on self-test, the BIOS configuration utility, and the Sycard PCCtest. Table 3-1 on page 3-5 shows how you can use these tools to isolate the cause of the notebooks problem.
The troubleshooting suggestions on page 3-5 include general suggestions for repairing units
that show specific failure symptoms. Swapping modules that may be defective with others known to be good is generally an ideal way to find the module responsible for the problem. A failure symptom is rarely caused by more than one module, so you will not usually need to replace more than one to correct a particular failure. After you replace a module, the notebook will normally be in a confused state and lock up when you apply power. If this happens, press the reset switch: this resets the notebook, so that you can restart it in a known state.

Verifying the Repair

Before returning the repaired notebook to the customer, verify the repair by running the following tests:
e-DiagTools Basic Diagnostic Test. Run the basic test of the e-DiagTools diagnostic program (page 3-22). and
Function Tests. Run tests that check the repaired function, such as in the e-DiagTools diagnostic program (page 3-22).
Failed Tests. Run any other tests that failed during troubleshooting.
Suggestions for Troubleshooting
Table 3-1. Scope of Diagnostic Tools
Function Bootup Processor Memory Fan Batteries Display Hard disk Keyboard Parallel LAN Modem PCMCIA/ PC Cardbus CD/DVD drive
e-DiagTools Tests Tests Tests
Power-on self-test Tests Tests Tests
Sycard PCCtest 450 BIOS Configures
Tests (CMOS battery only) Tests Tests Tests Tests Tests Tests Tests Tests Tests (with boot CD) Tests Tests Tests

Check for disk in floppy drive. Check boot order using BIOS configuration utility. Remove and reinstall hard drive. Verify proper ownership, then follow removal procedure with owner and record appropriate data. See page 5-1. Make sure charged battery is installed or AC adapter connected. Try another battery or AC adapter if available. Check battery and contacts. Try another battery if available. Notebook beeps repeatedly when battery is low. Connect AC adapter or replace battery. Battery is probably extremely low. Connect AC adapter or replace battery.
Hard drive contacts. Hard drive.

Password forgotten.

Power/Battery No power.
AC adapter. Battery. Motherboard.
Does not run on battery; empty battery indication. Beeps repeatedly.
Battery or contacts. Motherboard. Battery.
Notebook turns off immediately after turning on.

Battery.

Symptom Battery does not charge.
AC adapter does not power notebook. Notebook has short operating time.
Call Center: Suggestions Make sure AC adapter is connected properly and battery installed properly. Check battery contacts. If available, try another battery and AC adapter. Move notebook away from any nearby heat source. Unplug AC adapter and allow battery to cool down. Check for blocked air vents. Try another AC adapter, if available. Turn down display brightness. Check timeout settings in Power Options in Control Panel. Battery gauge may need calibration. Restart notebook, press F6 when HP logo appears, and follow onscreen instructions. This calibrates the battery, and requires four to five hours. You cannot use notebook during this process. Certain applications can cause excess CPU and power usage. (Users can get Intel Power Monitor from www.intel.com and monitor CPU load.) When playing DVD movies on battery power, use Power Options in Control Panel to select Portable/Laptop power scheme. When using applications with automatic save feature (such as MS Word), extend save time or disable to reduce hard disk access and power usage. PCMCIA card use can affect battery life. Some PCMCIA cards draw power even while not in use. Heavy modem use can affect battery operating time.
Repair Center: Likely Causes Battery or contacts. AC adapter. Motherboard. Fan. Heatsink.
Repair Center: Comments Check battery and AC adapter. Check fan and heatsink.
AC adapter. Motherboard. Battery. Motherboard.
AC adapter cannot be repaired, and must be replaced. Rechargeable batteries tend to degrade over time. Appropriate battery training and calibration is required for maximum battery life. Battery life may vary depending on notebook model. Approximate battery life by type (depending on usage and battery calibration): 8-cell LiIon: up to 3.5 hrs. 6-cell LiIon: up to 2.5 hrs. 8-cell NiMH: up to 2 hrs.

Scratched display glass. Local area of dark or light discoloration visible when display is on. External display does not work.
Caused by excessive pressure applied to area on screen. Check connections. Press Fn+F5 several times. Try display on another computer. Check display resolution (default is 1024 768). Use HP Desktop Zoom to adjust size of desktop icons and labels. Fn+F5 switches only between internal LCD and external display connected to VGA port, and will not switch to TV display connected to TV output port. External display. Motherboard.
Declared to be caused by customer abuse. Declared to be caused by customer abuse.
Display difficult to read or part of desktop not visible.
Cannot switch to TV display by pressing Fn+F5
Symptom If you cannot change the display resolution or color depth while playing a DVD or a video file in AVI or MPEG format If a DVD or a video file in AVI or MPEG format doesnt play with two displays
Call Center: Suggestions Set display resolution and color depth before starting DVD or video file player. You cannot change these settings once player is started.
Display problems while using a TV set as a monitor
Before starting DVD or video file player, press Fn+F5 to switch to one display. You cannot switch displays once player is started. If using both displays, DVD or video image will not appear on any display set up as secondary. Click Start, Control Panel, Appearance and Themes, Display. Click Advanced on Settings tab, then click S3Display tab and change settings. Notebooks S-video (TV-out) port is optimized for DVD display. Performance may vary when using S-video port for other applications. Before using TV set as monitor, switch notebooks display resolution to 800 by 600 pixels: 1. Connect video cable from TV set to notebooks S-video port. 2. Turn on TV. 3. Click Start, Control Panel, Appearance and Themes, Display, Settings, then click Advanced button. 4. On S3Display tab, select TV as Display Device, then click OK. 5. Set screen resolution to 800 by 600 pixels, then click OK. Check power source. Remove and reinstall hard drive. Check connector. Back up drive immediately. Was notebook or drive dropped? Back up drive immediately. Check hard drive installation. Check for alternate noise sources, such as PCMCIA drive or fan. Hard drive or connector. Motherboard. Hard drive. If drive case is damaged, drive may not operate properly. Check notebook and drive for evidence of customer abuse.
Hard disk Hard disk never spins. Hard disk makes clunking or scratching noise. Hard disk makes buzzing or whining noise.
Depends on source of noise.
Symptom Files are corrupted.
Disk capacity is less than normal.
Disks reported capacity is less than actual size
Call Center: Suggestions Run virus scan program. Check disk using Tools tab in disks Properties sheet. Back up files if possible, then use Recovery CDs to reformat hard disk and reinstall factory software. Check disk using Tools tab in disks Properties sheet. Check partitions using Control Panel, Administrative Tools, Computer Management under Storage. Use Recovery CDs to reformat hard disk and reinstall factory software. Hard disk allocates space to diagnostic software. This space is unavailable for other uses, and not included hard disk capacity reported by Windows. Check disk for proper insertion, dirt, or damage. Clean with soft cloth or replace as needed. If CD was created on CD-RW drive, try using HP certified media. Read and write quality may vary for other media. Restart the notebook. Make sure the CD/DVD drive is inserted properly. DVD may be double-sided. Movie may be paused. Press Play button. DVDs contain embedded regional codes that prevent them from playing outside the region in which they are sold. This error occurs when trying to play DVD intended for different region. Important: most DVD drives allow region code to be changed only a limited number of times (usually no more than four). When this limit is reached, the last change is hard-coded on the DVD drive, and is permanent. Refer to the DVD player software help for details.

Repair Center: Comments Use suggestions shown at left.
CD/DVD drive Particular CD or DVD not playing properly.
Cannot read any CD or DVD. DVD movie stops playing. Region Code error.

CD/DVD drive.

HP warranty does not cover expense of correcting this situation.
Symptom System Error: Unable to read drive message.
DVD doesnt play with two displays
Problems with display resolution or color when playing DVDs
No DVD or CD-RW software on notebook

All DVD play is erratic

Call Center: Suggestions Make sure disk is clean, undamaged, and inserted correctly. Clean with soft cloth or replace as needed. Wait 5 to 10 seconds after closing tray before pressing Play. Restart notebook. Make sure CD/DVD drive is installed properly. Before starting DVD player, press Fn+F5 to switch to one display. You cannot switch displays once DVD player is started. If using both displays, DVD image will not appear on any display set up as secondary. Open Display in Control Panel, click Advanced on Settings tab, and change settings. Set resolution or color depth before starting DVD player. You cannot change these once DVD player is started. Some combinations of color depth and resolution not supported in DVD playback. If needed, reduce color depth or display resolution. CD/DVD drive module may not have been properly installed first time notebook was booted. Make sure drive is correctly installed, and use Recovery CDs to reinstall factory software. Some DVDs include software called PC Friendly. This software can cause errors or erratic play. If needed, uninstall PC Friendly and restart notebook. Try reinserting ribbon cable in connector on motherboard. Check connections. Press Fn+F8 to activate numeric keypad, and Lock key to turn on number lock. Avoid touching touch pad while booting or resuming.
Repair Center: Likely Causes CD/DVD drive. Motherboard.
Keyboard Some or all keys do not work properly. External keyboard does not work. Embedded numeric keypad does not work.
Keyboard. Motherboard. External keyboard. Motherboard. Keyboard. Motherboard.
Symptom Touch pad General problems.
Call Center: Suggestions Restart notebook. Press and hold power button four seconds to reset notebook. Avoid touching touch pad while booting or resuming. Check settings in Control Panel.
Repair Center: Likely Causes Top case. Motherboard.
Click button does not work. Memory Out of memory error. Make sure C drive is not running out of free space. Use memory troubleshooter in Windows Help. Not all third-party memory cards have been tested for use with notebook. Check HP Notebook Web site for list of approved memory cards. Use only PC133 or higher SDRAM modules.
Top case. Motherboard. SDRAM module.
Memory doesnt increase after adding SDRAM Audio No sound is audible.

Cant browse My Network Places
Cant log in to Netware servers.
Notebook stops responding after booting
Symptom Infrared General problems.
Call Center: Suggestions Make sure correct drivers are installed. In Device Manager, double-click Infrared devices, then double-click IrDA Fast Infrared Port. On Advanced tab, click Infrared Transceiver A in Property window, then select IBM 31T1100 from pull-down menu. Make sure the line between the two infrared ports is not blocked, ports face each other squarely and are no more than 1 meter apart. Sunlight, heat from nearby equipment, or other sources of infrared radiation can cause transmission errors. Make sure only one application is using infrared port. Remove any PC Cards from notebook (possible IRQ conflict). For fast-IrDA, check for DMA conflict with ECP parallel port. Check TCP/IP setup in Control Panel. Check SSID and channel settings: click wireless link icon in taskbar and select Advanced Configuration. Stop USB devices that may perform large data transfers, or adjust application settings to reduce transfer rate. Make sure wireless PCA and antenna are installed properly. Disable Bluetooth. If Bluetooth device is transmitting, notebook may not be able to enter standby or hibernation.
Repair Center: Likely Causes Motherboard.
Wireless General problems.
Display assembly. Wireless PCA. Antenna. Motherboard.
Symptom PC card Miscellaneous problems.
Call Center: Suggestions Remove and reinsert PC card. Restart notebook. Try card in other slot or in another computer. Check for conflicts or refresh device list in Device Manager. If card requires an IRQ, make sure one is available. Check HP Notebook Web site for installation instructions and information about supported PC cards (page vi). Download current drivers from card manufacturers Web site. Stop PC card before removing it to avoid data loss. Disable internal modem.
Repair Center: Likely Causes PC card. PCMCIA socket. Motherboard.
Repair Center: Comments Using a flashlight, look for bent pins inside PCMCIA socket. If both slots have problems, replace motherboard. If only one slot has a problem, try replacing PCMCIA socket.

Data loss.

PC card modem not working. Video file playback AVI or MPEG file doesnt play with two displays.
Resolution or color depth problems when playing an AVI or MPEG file.
Before playing, press Fn+F5 to switch to one display. Cannot switch displays after play begins. If using both displays, video image will not appear on any display set up as secondary. Open Display in Control Panel, click Advanced on Settings tab, and change settings. Set the resolution or color depth before starting the video file player. You cannot change these settings after play begins. Some combinations of color depth and resolution are not supported in video file playback. If you receive an error message, reduce color depth or display resolution.
Symptom Performance Notebook still on but stops responding.
Call Center: Suggestions Press Ctrl+Alt+Del and end any application not responding. Press and hold the power button four seconds to turn off and reset notebook, then press the power button to turn the notebook back on. If this fails, use a pen to press reset switch, then press power button to turn notebook back on. May be normal Windows behavior (background processing can affect response time). Certain background operations (such as virus scanning software) can affect performance. Press Ctrl+Alt+Del to see if an application is not responding. Restart notebook. If hard disk has spun down to conserve power, it can take several seconds to spin up. If needed, use Power Options in Control Panels to change hard disk time-out to match standby time-out. Some file browsers respond slowly while processing graphics or waiting for broken network connections to time out. Check for overheatingsee previous symptom. If notebooks hard disk drive runs frequently (as indicated by notebooks hard disk drive access light) while notebook appears to be paused or running slowly, consider installing additional SDRAM. Check available free disk space. Delete temporary and unneeded files.
Notebook pauses or runs sluggishly.

Fan. Heatsink. CPU module. Motherboard.
If notebook slows after period of continuous activity, check heatsinksee previous symptom.
Symptom Notebook gets abnormally hot.

Clock loses time.

Call Center: Suggestions Always set notebook on a flat surface, so air can flow freely around and underneath. Make sure air vents are clear. Check fan and heatsink installation. Games and other programs that drive CPU usage toward 100% can contribute, as can charging battery. Plug in AC adapter for 24 hours to charge CMOS battery.
Repair Center: Likely Causes Fan. Heatsink.
Repair Center: Comments Check fan and heatsink for proper operation or damage.

Motherboard.

Diagnostic Tools
This section describes the following diagnostic tools you can use for troubleshooting and repairing the notebook:
e-DiagTools diagnostic program (below). Power-on self-test (page 3-25). Sycard PCCtest 450 PC Card (page 3-26). BIOS configuration utility (page 3-27).
e-DiagTools Diagnostic Program
The e-DiagTools hardware diagnostic program provides two levels of testing:
Basic user-level hardware test. Advanced individual hardware tests.
Figure 3-2. e-DiagTools Screens Basic and Advanced
The tests are designed to run after the system restarts, so that the notebook will be in a predictable state during the tests. The tests are non-destructive, and are intended to preserve the state of the notebook. The notebook restarts when you exit the program so drivers can be loaded.

Updating e-DiagTools

You can download the latest version of e-DiagTools from the HP Notebook Web site (see page vi). Follow the instructions included with the new version.

Running e-DiagTools

1. Restart the notebook: click Start, Turn Off Computer, Restart. 2. When the HP logo appears, press F10 to start the diagnostic test. 3. When the menu appears, press F2 to run eDiagTools. The first time you run the program, you are prompted to select the language for the program. 4. When the Configuration Description appears, verify the list of detected hardware.
Note If a device is not detected or fails its test, it might be configured incorrectly in BIOS. You can confirm this by running the BIOS configuration utility and checking the settingssee BIOS Configuration Utility on page 3-27.
5. Run the basic test. Press F2 to start the basic hardware test. The results appear when the test is complete. You can also proceed directly to the advanced tests from this point by pressing Ctrl-F9 (in which case skip to step 10, below). ??still true?? If the basic test fails, you can press F6 and start a Wizard that runs a set of advanced tests for the failed component. Then generate a support ticket. ??still true?? 6. Optional: Run the advanced tests. Press F2 to open the advanced test screen. 7. Use the arrow keys and ENTER to select the tests that you want to run. Tests are listed only for detected hardware. If a test fails, the error code and description are logged, and the error code is displayed temporarily. If several errors occur, look for patterns that might indicate a common cause. 8. Press F2 to run the selected tests and add the results to the Support Ticket. 9. Press F12 to run the selected tests in a loop until you press ESC. When running advanced tests in a loop, ESC does not stop all tests immediately. 10. After each run, press F2 to go back to the advanced tests screen, press F4 to view the support ticket, or press F3 to exit.

PCCtest 450 or 460 (revision 1.05) PC Card. PCCtest 450/460 test software disk. (Software updates are available at the Sycard Technology Web site: http://www.sycard.com.) Configuration headers (PC Card/16-bit and CardBus/32-bit) that attach to the card.
You will also need a CardBus extender card (such as the Sycard PCCextend 70) to avoid wear on the Sycard PCMCIA connector. The Sycard PCCtest 450 and 460 provide the following tests. See the Sycard documentation for details about running the tests.
Table 3-4. Sycard PCCtest Commands
Slot zt1000/xz300/xt1500 (technology code ID) N/A PCMCIA PC Card (16-bit) test (PC Card configuration header) PCT450 -bc1b -0 -v CardBus (32-bit) test (CardBus configuration header) TESTCB -b92b -0 v
BIOS Configuration Utility
The BIOS configuration utility provides access to basic system settings. It is independent of the operating system.
Running the BIOS configuration utility
1. Restart the notebook. 2. When the HP logo appears, press F2 to enter the BIOS configuration utility. 3. The pointing devices are not active in the BIOS configuration utility, so you will need to use the keyboard to navigate:
Press the left and right arrow keys to move among menus. Press the up and down arrow keys to move among parameters in a menu. Press Enter to open the dialog for the current parameter, or to select the parameter. Press Tab or the left and right arrow keys to move among selections in a dialog. Press the up and down arrow keys to move through values for the setting. Press Enter to close the dialog and accept the settings.
4. After you select the options you want, use the Exit menu to exit the utility.
Table 3-5. BIOS Configuration Menus and Parameters
Pavilion zt1000/xz300 and Omnibook xt1500: Settings for BIOS version IB.M1.00 (Spring 2002). Main Menu BIOS Revision Service ID (Born On Date) Serial Number UUID Number Platform Branding ID System Time System Date Internal Hard Disk Extended Memory LCD Status Panel Display LCD Status Panel Date Format LCD Status Panel Time Format Description Shows the current BIOS version. Displays an identifier used for repair service. Displays the serial number as shown on the back of the unit. Displays the value of the 16-byte UUID (Universally Unique ID) as 32 hex characters. Displays the product family. Sets the time using 24-hour format. Values set take effect immediately. Sets the date using dd/mm/yy format (except English, which uses mm/dd/yy format). Sets the hard disk drive type and various parameters. Shows the extended memory size. Sets whether the status panel on the front of the notebook is enabled. Sets the date format for the status panel. Sets the time format for the status panel. Detected automatically. Detected automatically. Enabled mm/dd/yy hh:mm AM/PM Default Detected automatically. Detected automatically. Detected automatically. Detected automatically. Detected automatically.

7 or more single bright dots. 7 or more single dark dots. 9 or more total (bright and dark combined) defective dots.
1. Product Information 2. Removal and Replacement 3. Troubleshooting and Diagnostics 4. Replaceable Parts 5. Reference Information

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Troubleshooting and Diagnostics....3-1
Troubleshooting....3-2 Checking for Customer Abuse....3-3 Troubleshooting the Problem....3-4 Verifying the Repair....3-4 Suggestions for Troubleshooting....3-5 Diagnostic Tools....3-22 e-Diagtools Diagnostic Program...3-22 Power-On Self-Test....3-25 Sycard PCCtest 450/460 CardBus Card (Optional)...3-26 BIOS Configuration Utility...3-27
Replaceable Parts....4-1 Reference Information....5-1
Password Removal Policy.... 5-1 Hewlett-Packard Display Quality Statement... 5-2

Figures

Figure 1-1. Front View.... 1-3 Figure 1-2. Back View.... 1-4 Figure 1-3. Bottom View.... 1-5 Figure 1-4. Main Status Lights.... 1-7 Figure 1-5. Keyboard Status Lights.... 1-8 Figure 1-6. Resetting the Notebook.... 1-9 Figure 1-7. Multimedia Buttons and Status Panel... 1-10 Figure 1-8. Replaceable Module Diagram.... 1-14 Figure 2-1. Disassembly Flow.... 2-2 Figure 2-2. Removing the Battery.... 2-4 Figure 2-3. Releasing the Plug-in Module... 2-5 Figure 2-4. Removing the Hard Disk Drive.... 2-6 Figure 2-5. Removing the Hard Disk Tray... 2-7 Figure 2-6. Removing the Keyboard Cover Retaining Screws.. 2-9 Figure 2-7. Removing the Keyboard Cover.... 2-10 Figure 2-8. Loosening the Keyboard Retaining Screws... 2-11 Figure 2-9. Disconnecting the Keyboard... 2-12 Figure 2-10. Removing an Expansion SDRAM Module.. 2-13 Figure 2-11. Installing an Expansion SDRAM Module... 2-14 Figure 2-12. Removing the System SDRAM Module... 2-14 Figure 2-13. Removing the Mini-PCI Card.... 2-17 Figure 2-14. Removing the Display (1)... 2-18 Figure 2-15. Removing the Display (2)... 2-19 Figure 2-16. Removing Display Assembly Components.. 2-21 Figure 2-17. Removing the Fan and Heatsink... 2-23 Figure 2-18. Installing a New Thermal Pad.... 2-24 Figure 2-19. Removing the CPU Module... 2-26 Figure 2-20. Removing the Top Case Retaining Screws.. 2-27 Figure 2-21. Removing the Top Case... 2-29 Figure 2-22. Removing the Hinge Saddles... 2-31 Figure 2-23. Removing the Motherboard... 2-33 Figure 2-24. Installing the Docking Doors... 2-35 Figure 2-25. Installing the PCMCIA Doors.... 2-35 Figure 2-26. Example of Serial Number Label.... 2-36 Figure 3-1. Basic Troubleshooting Steps... 3-2 Figure 3-2. e-Diagtools Screens Basic and Advanced... 3-22 Figure 3-3. Parallel Loopback Connector... 3-24 Figure 4-1. Exploded View.... 4-2

Tables

Table 1-1. Pavilion zt1100/xz200 and Omnibook xt1500 Series Models..1-1 Table 1-2. Activating Power Modes....1-6 Table 1-3. Fn Hot Keys....1-8 Table 1-4. Pavilion zt1100/xz200 and Omnibook xt1500 Series Hardware Specifications.1-11 Table 1-5. Pavilion zt1100/xz200 and Omnibook xt1500 Series Accessories..1-13 Table 1-6. Functional Structure....1-15 Table 2-1. Removal Cross-Reference...2-1 Table 2-2. Required Equipment....2-3 Table 2-3. Recommended Screw Torques...2-3 Table 2-4. Replacing Small Parts (User-Replaceable)...2-15 Table 2-5. Removing Notebook Components...2-37 Table 3-1. Scope of Diagnostic Tools...3-5 Table 3-2. Troubleshooting Suggestions....3-5 Table 3-3. Insyde MobilePRO BIOS POST Beep Codes and Messages..3-25 Table 3-4. Sycard PCCtest Commands....3-26 Table 3-5. BIOS Configuration Menus and Parameters...3-27 Table 4-1. Replaceable Parts for the Pavilion zt100/xz100 Series..4-3 Table 4-1. Replaceable Parts for the Omnibook xt1000 Series...4-6 Table 5-1. TFT LCD Guidelines (14.1/15.0-in XGA)...5-3

Figure 1-3. Bottom View

32. Infrared port (selected models). 33. Battery. 34. CD/DVD drive latch. 35. RAM cover. 36. Battery latch. 37. Docking port. 38. Mini-PCI cover. 39. Hard disk drive retaining screws.

Operation

This section gives an overview of the notebooks operation.
Turning the Notebook On and Off
You can start and stop the notebook using its power button. However, at times you may want to use other methods to start or stop the notebookdepending on power considerations, types of active connections, and start-up time.
Note This manual describes the notebook in its original factory configuration, with all settings at their default values. Table 1-2. Activating Power Modes
Power mode On Power mode status light is green. Standby Maintains current session in RAM. Turns off the display and other components. Saves significant power. Restarts quickly. Restores network connections. Power mode status light is amber. Hibernation Saves current session to disk, then turns off. Saves maximum power. Restores network connections. Power mode status light is off. Turn off Turns off without saving current session. Saves maximum power. At startup, resets everything, and starts a new session. Power mode status light is off. To enter this mode Press the power button. Click Start, Turn Off Computer, Stand By or press the power button or allow timeout. Click Start, Turn Off Computer, then press and hold Shift and click Hibernate or allow timeout. Click Start, Turn Off Computer, Turn Off or press and hold the power button for four seconds (only if the Start menu procedure doesnt work). To turn on again
Press the power button to quickly resume your session.
Press the power button to resume your session.
Press the power button to start with a new session.
Checking the Notebooks Status
The notebooks status lights report power and battery status, keyboard status, and drive activity.
Figure 1-4. Main Status Lights

1. Hard disk drive activity.
On: the notebook is accessing the hard disk drive.

2. Power mode.

Green: the notebook is on (even if the display is off). Amber: the notebook is on standby. Off: the notebook is off or in hibernation.
3. Battery charge status.
Green: the AC adapter is connected and the battery is fully charged. Amber: the AC adapter is connected and the battery is charging. Red: the AC adapter is connected and the battery has a fault. Off: the AC adapter is not connected or the battery is missing.
Figure 1-5. Keyboard Status Lights
1. Caps Lock. Caps Lock is active. 2. Num Lock. Num Lock is active. (The Keypad Lock must also be on to use the embedded keypad.) 3. CD drive activity. The CD drive is active.

Using Fn Hot Keys

The combination of the Fn key plus another key creates a hot keya shortcut key sequencefor various system controls. To use a hot key, press and hold Fn, press the appropriate second key, then release both keys.

Table 1-3. Fn Hot Keys

Hot Key Fn+F1 Fn+F2 Fn+F5 Fn+F8 Fn+Num Lock Fn+Page Up Fn+Page Down Fn+Backspace Fn+any One-Touch button Effect Decreases the display brightness. Increases the display brightness. Toggles among the built-in display, an external display, and simultaneous display on both. Toggles the built-in numeric keypad on and off. Does not affect an external keyboard. If Num Lock is on, the numeric functions are active; otherwise, cursor control is active. Toggles Scroll Lock on and off. Increases the volume (and turns audio on if muted). Decreases the volume. Toggles the mute function on and off. Toggles the One-Touch button LEDs on and off (selected models).

Resetting the Notebook

Occasionally, Windows or the notebook may stop responding, so that you cannot turn the notebook off. If this happens, try the following in the order listed:
If possible, shut down Windows: click Start, Turn Off Computer, Turn Off. Press Ctrl+Alt+Del, then click Shut Down. Press and hold the power button for about four seconds, until the display turns off. Use a pen or straightened paper clip to press the reset switch on the back of the notebook.
Figure 1-6. Resetting the Notebook
Press the power button to turn the notebook on again.
Note To boot from a CD or DVD, insert a bootable CD (such as the Recovery CDs) into the drive, then restart. Press Esc when the HP logo appears, then select the CD-ROM/DVD drive as the temporary boot device.
Using the CD or DVD Player (selected models)
The multimedia buttons on the front of the notebook control the CD/DVD player, and work in much the same way as do the controls of a standalone CD or DVD player. The player operates whether the notebook is on, off, on standby, or in hibernation. (When the notebook is on, the volume control buttons also govern the volume for most audio applications.) If the notebook is off, on standby, or in hibernation, slide the multimedia power switch to the left to activate the player. For details about using the CD/DVD player, see the notebooks Reference Guide.

Tested Cross-Platform Accessories

Internal Design

The motherboard PCA is the central component of the notebooks design, and plays a role in virtually all system functions. The CPU module and most other subsystems connect to the motherboard. The following figure shows the electrical connections among the notebooks replaceable electronic modules. In addition, the table on page 1-15 lists the roles that the replaceable modules play in each of the notebooks functional subsystems.

Speakers

CPU module

Display assembly

Keyboard cover switch PCA

Mini-PCI card

Top case
touch/scroll pads, click buttons, CD player, IR (optional)

Motherboard PCA

CD/DVD drive

PCMCIA card

PCMCIA socket

SDRAM modules

SD-MMC card

SD-MMC socket

Volume control PCA

Hard disk drive

Audio PCA

Bluetooth PCA

USB PCA

Keyboard

Battery
Figure 1-8. Replaceable Module Diagram
Table 1-6. Functional Structure
Function Bootup Components Used CPU module Motherboard Hard disk drive CD/DVD drive module CPU module Motherboard SDRAM module Battery Motherboard Keyboard cover switch PCA AC adapter Motherboard Display assembly Motherboard Hard disk drive Motherboard Keyboard Keyboard cover CD player PCA Motherboard Top case Motherboard Display assembly USB PCA Volume control PCA Speakers Motherboard Top case Keyboard cover switch PCA CD player PCA Motherboard Motherboard USB PCA Motherboard PCMCIA sockets Motherboard Motherboard CD player PCA Display assembly Motherboard Mini-PCI PCA Bluetooth PCA USB PCA Motherboard Motherboard Component Roles Main processor. Primary system circuitry. First source of disk-based startup code. Second source of disk-based startup code. Main processor, numeric data processor, L1 and L2 cache. Primary system circuitry. Video RAM (shared). Changeable RAM (2 slots). Power storage. Power control circuitry, AC adapter socket, lid switch, reset switch, power supply. Power button. AC-to-DC converter. Video controller, display drivers, LVDS processing, display/graphics controller. Display output, backlight, power converter for backlight. Hard disk controller. Hard disk mechanism. Keyboard controller, keyboard BIOS. Key switches. One-Touch buttons. CD player buttons. Keyboard BIOS. Touch/scroll pad sensors, click buttons. Audio controller, audio decoder, speaker amplifier, external microphone jack. Microphone. Headphone jack. Volume control. Sound output. LED circuitry, keyboard controller. Status LEDs. Status LEDs. CD/DVD status display. I/O controller, parallel connector. Bus controller, USB connectors. USB connectors. PCMCIA controller. PCMCIA connectors. SD/MMC controller SD/MMC connector I/O controller. Infrared transmitter/receiver. Antennas, on-off button, indicator light. I/O controller. Radio PCA circuitry. Radio PCA circuitry. On-off button, indicator light. Docking logic, docking connector. PC card controller, PC card connector.

Processor Memory Power

Display

Hard disk Keyboard

Touch pad Audio

Status

Parallel USB PCMCIA SD-MMC Infrared Wireless

Docking PC card

Removal and Replacement
This chapter shows how to remove and replace the notebooks components, listed in the following table. The items marked by are user-replaceable.
Table 2-1. Removal Cross-Reference
Antenna, Bluetooth (page 2-20). Antenna, wireless (page 2-20). Battery (page 2-4). Bezel, display (page 2-20). Card, mini-PCI (page 2-16). Case, bottom (page 2-32). Case, top (page 2-27). Cover, expansion SDRAM (page 2-15). Cover, keyboard (page 2-9). Cover, mini-PCI (page 2-15). Covers, screw (page 2-15). Display assembly (page 2-18). Doors, docking (page 2-35). Doors, PCMCIA (page 2-35). Drive, hard disk (page 2-6). Fan (page 2-22). Feet, rubber (page 2-15).
Guide, hard disk drive (page 2-38). Heatsink (page 2-22). Keyboard (page 2-11). Module, CPU (page 2-25). Module, plug-in (page 2-5). Module, expansion SDRAM (page 2-13). Module, system SDRAM (page 2-14). PCA, audio (page 2-37) PCA, inverter (page 2-20) PCA, motherboard (page 2-32). PCA, volume control (page 2-39). Saddles, hinge (page 2-30). Socket, PCMCIA (page 2-39). Speaker, left (page 2-39). Speaker, right (page 2-39). Tray, hard disk drive (page 2-7).

Caution

Always provide proper grounding when performing repairs. Without proper grounding, an electrostatic discharge can damage the notebook and its components.
Notes To reassemble a component, perform the removal procedure in reverse order. Any special notes required for reassembly are included at the end of each section. Symbols like this are used throughout this chapter to show approximate full-size screw outlines. Use these to verify the sizes of screws before you install them. Installing a wrong-size screw can damage the notebook. (The symbol shown represents an M2.55mm T-head screw.)

Disassembly Flowchart

The following diagram shows the general paths you will use in disassembling the notebook to access any particular component.
Battery, AC adapter, secondary SDRAM module, mini-PCI card, hard disk drive, DVD/CD-RW drive

Keyboard cover

Left speaker

Primary SDRAM

Display assy

Right speaker

Modules on path A CD player PCA Infrared PCA Hard disk drive guide Optical disk drive guides

Heatsink Top case

CPU module If removing motherboard or bottom case, modules on path B

Hinge saddles

Audio PCA Volume control PCA Docking doors PCMCIA doors PCMCIA socket
Motherboard or bottom case
Figure 2-1. Disassembly Flow
Table 2-2. Required Equipment
#0 Phillips screwdriver, preferably magnetized. Small flat-blade screwdriver.5 mm hex driver.
Table 2-3. Recommended Screw Torques
Screw Thread Size M2.5 (211 mm long) M3 Torque (cm-kgf) 3.0 3.5 3.0 3.5 Torque (in-lbf) 2.6 3.0 2.6 3.0

Removing the Battery

(User-Replaceable)

Required Equipment

Removal Procedure
Slide the batterys release latch in the direction of the arrow on the latch, then lift the battery out of its compartment.
Figure 2-2. Removing the Battery Reassembly Notes
Insert the front end of the battery into the battery compartment, then press the back end in until the battery clicks into place.
Removing a Plug-In Module
Slide the module release latch in the direction shown by the arrow on the latch, and remove the module.
Figure 2-3. Releasing the Plug-in Module
Removing the Hard Disk Drive

#0 Phillips screwdriver.

1. Unplug the AC adapter, if present, and remove the battery. 2. On the bottom of the unit, remove both hard drive retaining screws.

Screws, M2.54mm

Figure 2-4. Removing the Hard Disk Drive
3. Carefully pull the hard drive out of the notebook. 4. Remove all four screws from the hard drive tray and drive case, then lift the drive out of the tray.

Screws, M2.5x4mm (2)

Figure 2-5. Removing the Hard Disk Tray Reassembly Notes
Insert the connector end of the drive through the opening in the tray, then lower the drive into place. Carefully slide the hard drive assembly into its compartment. Press firmly to make sure the connector seats properly.
Important If you are installing a new hard disk drive, install the factory software and operating system on the drive before loading any additional softwaresee Recovering and Reinstalling Software, below.
Recovering and Reinstalling Software
Use the Recovery CDs to reinstall the original factory software and operating system. The Recovery CDs also provide all HP notebookspecific Windows drivers, which are available in the following locations:
On the hard drive, under c:\hp\drivers. On the Recovery CDs, under \hp\drivers. On the HP Business Support web site (www.hp.com/go/bizsupport). This web site contains the latest updates of software drivers for various operating systems.
To recover the factory software installation
The following procedure describes how to recover the notebooks original software and operating system. This process can take up to 15 minutes to complete. (For more information about recovering the factory software installation, see the file readme.txt in the root directory of the Recovery CDs.)

Screws, M24mm (3)

Screw, M24mm
Figure 2-15. Removing the Display (2) Reassembly Notes
While installing the hinge screws, support the display so that it remains approximately flat. Make sure the cable fits into its slot in the bottom case, and reinsert the cable into the retaining clip near the left display hinge. Make sure the tabs on the left side of the left speaker fit between the corresponding tabs in the bottom case, and the speaker wires fit through their notch in the bottom case.
Removing Display Assembly Components
Note This procedure describes how to remove the display bezel, the inverter PCA, and (if present) the wireless antenna. Although these components can be replaced individually, in many cases it is preferable to replace the display assembly as a unit. Required Equipment
1. Unplug the AC adapter, if present, and remove the battery. 2. Remove these additional assemblies:
Keyboard cover (page 2-9). Display assembly (page 2-18).
3. Use a screwdriver or similar object to carefully pry the screw covers from the display bezel. 4. Remove the four screws from the display bezel. 5. Beginning at the top center of the display, carefully pry up the inner edge of the bezel with thumbs and fingers. Work your way around the inside edge to unsnap the latches, then remove the bezel from the display. 6. Remove the retaining screw from the inverter PCA. Carefully turn the PCA over, unplug the cable from the left end, and disconnect the wires extending from its right end. 7. If present, remove both retaining screws from the Bluetooth or 802.11b antenna, and remove the antenna from the display.

Screws, M2.5x6mm (4)

Screw, M24mm Screws, M24mm (2) Inverter PCA

802.11b antenna

Screws, M24mm (2) Bluetooth antenna
Figure 2-16. Removing Display Assembly Components Reassembly Notes
Make sure the alignment hole in the inverter PCA fits over the corresponding post in the display case. Make sure the alignment hole in the wireless antenna fits over the corresponding post in the display case. Set the bezel in place on the display, then work your way around the bezel, firmly snapping the bezel latches shut. The rounded screw co vers go on the screws at the top of the display bezel, and the flat covers go on the screws at the bottom of the bezel.
Removing the Fan and Heatsink
Keyboard cover (page 2-9). Keyboard (page 2-11).
3. Remove the retaining screw from the right speaker. Disconnect the speaker wires from the motherboard, and lift the speaker out of the notebook. 4. Disconnect the fan wires from the motherboard. 5. Remove both retaining screws from the fan. 6. Lift the fan out of the notebook.

When removing the top case, be careful not to pull on the cable that connects the CD player PCA in the top case to the notebook.
10. Carefully lift the top case forward and off of the notebook. 11. Disconnect the volume control PCA cable from the motherboard (if present).
Screws, M24mm (3) Screws, M24mm (5) Screws, M24mm (2)
Figure 2-21. Removing the Top Case Reassembly Notes
Make sure the touch pad cable, and CD/DVD player PCA cable, and volume PCA cable (if present) are securely connected. If present, reinsert the wireless cables into their slot in the top case. Make sure the tabs along the edges of the case snap shut.
Removing the Hinge Saddles
Keyboard cover (page 2-9). Keyboard (page 2-11). Display assembly (page 2-18). Top case (page 2-27).
3. Remove the retaining screws from the right hinge saddle, and lift the hinge saddle out of the notebook. 4. Remove the retaining screws from the left hinge saddle, and lift the hinge saddle out of the notebook.
Be careful not to damage the volume control PCA (if present) after removing the right hinge saddle. If excessive handling of the bottom case is anticipated, it is recommended that you remove the PCA to avoid accidentally displacing it.

Screws, M2.5x6mm (3)

Figure 2-22. Removing the Hinge Saddles Reassembly Notes
Make sure the posts on the underside of the hinge saddles line up with the openings in the bottom case, and that the holes in the front ends of the saddle fit over the alignment posts in the bottom case.
Removing the Motherboard or Bottom Case
#0 Phillips screwdriver.5 mm hex driver
When Installing a New Motherboard
Before replacing the motherboard, you must (if possible) electronically store the motherboards serial number and service ID for transfer to the new motherboard. 1. Exit Windows and boot to a DOS prompt. 2. Run ESN.EXE from one of these sources:
On a factory software installation, change to the \hp\drivers\hputils directory and type esn at the prompt. Otherwise, copy \hp\drivers\hputils\ESN.EXE from the Recovery CD, then run it on the notebook.
3. Store the serial number and service ID as directed.

Battery (page 2-4). Plug-in module (page 2-5). Hard disk drive (page 2-6). Keyboard cover (page 2-9). Keyboard (page 2-11). SDRAM modules (page 2-13). Mini-PCI card (page 2-16). Display assembly (page 2-18). Fan and heatsink (page 2-22). CPU module (page 2-25). Top case (page 2-27). Hinge saddles (page 2-30).

3. Remove the retaining screws from the hard disk drive guide, and lift the guide off of the motherboard. 4. Remove the retaining screw from each CD/DVD disk drive guide, and life the guides off of the motherboard.
5. Remove both retaining screws from the motherboard. 6. Remove the four standoffs located near the CPU module. 7. Disconnect the audio PCA and remove it from the motherboard. 8. Lift the front edge of the motherboard slightly, then carefully lift the motherboard forward and out of the bottom case.
Screws, M24mm (2) Standoffs, 5mm (4)
Figure 2-23. Removing the Motherboard Reassembly Procedure
When reinstalling the motherboard, see Reinstalling the Motherboard on page 2-34. When reinstalling the bottom case, see Replacing the Bottom Case on page 2-35.
Reinstalling the Motherboard

Reassembly Procedure

1. Insert the I/O connectors through their openings in the bottom case, then lower the motherboard into place. 2. Make sure the PC card eject button fits into its slot in the bottom case. 3. Make sure the alignment posts in the bottom casenear the CPU module and PC card guidefit through the corresponding openings in the motherboard.
After installing a new motherboard, you must electronically transfer to it the serial number and service ID from the previous motherboard. 1. Exit Windows and boot to a DOS prompt. 2. Run ESN.EXE from the same source you used when saving the serial number and service ID from the previous motherboard:
3. Install the serial number and service ID.
If you are prompted for the serial number, type the serial number shown on the bottom of the case. If a serial number has already been stored, you must call an HP support center to change it (see page vi).
Replacing the Bottom Case

Installation Procedure

1. Install a new Microsoft Product ID label. 2. Transfer the old serial number label and install a new overlay, or create a new serial number label using the steps on the following page. 3. If you need to install or replace the docking doors or PCMCIA doors, refer to the figures below.
Figure 2-24. Installing the Docking Doors
Figure 2-25. Installing the PCMCIA Doors
Installing a New Serial Number Label
Download the latest version of the serial number label template (Microsoft Word format) from the Partnership web site (see page vi) under Support/Service in Technical Support Information, or from http://www.mcd.hp.com. Store it with other Word templates on a PC connected to a laser printer. The latest version includes fields for warranty period and manufacturing location. 1. Open a new document based on the serial label template. 2. Enter the information from the old serial label, and print the new label on plain white paper. The new label does not have barcodes. 3. Carefully cut out the new serial label just inside the border and place it into the inner recess in the bottom case. The bottom of the label goes toward the front of the case. 4. While holding the paper label in place, attach a serial label overlay into the outer recess. It covers and protects the serial label.

Record pertinent information about the notebook:
Model and serial number. Operating system and version. Software version (hidden file c:\version.inf). BIOS version. Accessories and peripherals used.

Analyze the problem:

Observe Symptoms. Using the customers information, try to duplicate the problem. Determine how the problem differs from proper behavior. Also, note the functions that do work properly. Separate Problems. If there is more than one symptom, separate them into distinct problems. Consider Causes. Keep in mind possible causes for each problem. Use the diagnostic tools and
troubleshooting suggestions to help find the possible causes.
The e-Diagtools diagnostic program tests most of the notebooks components using automatic
and interactive tests, and will be your primary troubleshooting tool. Other tools include the power-on self-test, the BIOS configuration utility, and the Sycard PCCtest. Table 3-1 on page 3-5 shows how you can use these tools to isolate the cause of the notebooks problem.
The troubleshooting suggestions on page 3-5 include general suggestions for repairing units
that show specific failure symptoms. Swapping modules that may be defective with others known to be good is generally an ideal way to find the module responsible for the problem. A failure symptom is rarely caused by more than one module, so you will not usually need to replace more than one to correct a particular failure. After you replace a module, the notebook will normally be in a confused state and lock up when you apply power. If this happens, press the reset switch: this resets the notebook, so that you can restart it in a known state.

Verifying the Repair

Before returning the repaired notebook to the customer, verify the repair by running the following tests:
e-Diagtools Basic Diagnostic Test. Run the basic test of the e-Diagtools diagnostic program (page 3-22). and
Function Tests. Run tests that check the repaired function, such as in the e-Diagtools diagnostic program (page 3-22).
Failed Tests. Run any other tests that failed during troubleshooting.
Suggestions for Troubleshooting
Table 3-1. Scope of Diagnostic Tools
Function Bootup Processor Memory Fan Batteries Display Hard disk Keyboard Parallel LAN Modem PCMCIA/ PC Cardbus CD/DVD drive
e-Diagtools Tests Tests Tests

Power-on self-test Tests Tests Tests

Sycard PCCtest 450

BIOS Configures
Tests (CMOS battery only) Tests Tests Tests Tests Tests Tests Tests Tests Tests (with boot CD) Tests Tests Tests
<F6> at boot to calibrate
Use an appropriate external device to exercise the port. See the help text for the tests.
If you cannot isolate the cause of a problem using the above diagnostic tools, use the suggestions in the following table to help find the problem.
Table 3-2. Troubleshooting Suggestions
Symptom Call Center: Suggestions Repair Center: Likely Causes Repair Center: Comments
To help determine likely causes, check to see what replaceable modules are involved in the system function and what roles they play. See Figure 1-8 on page 1-14 and Table 1-6 on page 1-15. Startup Does not boot on battery, but boots on AC. Does not boot from CD in CD/DVD drive. Sluggish startup or shutdown.
Make sure battery is properly installed and fully charged. Check battery contacts. If available, try another battery. Make sure CD is bootable. Use BIOS configuration utility to check boot order. Restart notebook. Check disk using Tools tab in disks Properties sheet, and use Disk Defragmenter to optimize hard drive. Delete temporary and unneeded files.
Battery or contacts. Motherboard.
CD/DVD drive. Motherboard.

Hard drive.

Use suggestions shown at left.
Symptom Does not boot on AC or battery.
Call Center: Suggestions Check power source. Press reset switch to reset notebook, then press power button to turn notebook on. Unplug AC adapter, remove battery and any PC cards, then reconnect power and try again. Do not use touch pad while booting or resuming. Remove battery, AC adapter, and any PC cards. Plug in AC adapter, reset notebook using reset switch, then press power button to turn notebook on. Remove all but one SDRAM module and try again. Reinsert any other SDRAM modules and try again.
Repair Center: Likely Causes AC adapter. SDRAM module. CPU module. Motherboard. Display assembly. Hard drive.
Beeps once, spins hard disk, repeats, but does not boot. Error message such as Invalid system disk or Auto IDE error.

SDRAM module.

Repair Center: Comments Check AC adapter. Remove any SDRAM modules and try again. If power status light does not turn on, replace top case. If power status light turns on but display remains off, try external monitor. If monitor shows successful boot, replace display assembly. If monitor shows activity but BIOS does not complete, replace display assembly. If monitor is blank, replace motherboard. If power status light and display turn on and BIOS completes, but OS does not start from hard disk or from floppy drive, replace CPU module, then motherboard. If OS starts from floppy drive, use Recovery CDs to reinstall factory software onto hard drive; replace hard drive. Make sure at least one SDRAM module is installed. If notebook boots from floppy drive, check for corrupt files on hard drive; use Recovery CDs to reinstall factory software onto hard drive; replace hard drive. User must call Technical Support and provide proof of ownership. Password removal is restricted to certain sites. See page 5-1.

Repair Center: Likely Causes CD/DVD drive. Motherboard.
Keyboard Some or all keys do not work properly. External keyboard does not work. Embedded numeric keypad does not work.
Keyboard. Motherboard. External keyboard. Motherboard. Keyboard. Motherboard.
Symptom Touch pad General problems.
Call Center: Suggestions Restart notebook. Press and hold power button four seconds to reset notebook. Avoid touching touch pad while booting or resuming. Check settings in Control Panel.
Repair Center: Likely Causes Top case. Motherboard.
Click button does not work. Memory Out of memory error. Make sure C drive is not running out of free space. Use memory troubleshooter in Windows Help. Not all third-party memory cards have been tested for use with notebook. Check HP Notebook web site for list of approved memory cards. Use only PC133 or higher SDRAM modules.
Top case. Motherboard. SDRAM module.
Memory doesnt increase after adding SDRAM Audio No sound is audible.
Built-in microphone does not record.

Feedback from speakers.

PC card detection beep at startup is loud and cannot be adjusted.
Increase sound volume. Make sure sound is enabled (software controls). Check for sound resource conflicts in Device Manager. Sound may not operate properly in MS-DOS mode. Check speaker cable connections. Check software controls for recording sound. Make sure display assembly is connected properly. Reduce sound volume. In Volume Control, click Options, Properties, select Playback, and enable microphone. Then make sure microphone is muted. Download latest audio driver from technical support area of HP Notebook web site (see page vi).

Speakers. Motherboard.

Check operation using headphones or external speakers.
Display assembly. Motherboard.
Check operation using external microphone.
Symptom Parallel/USB General problems.
Call Center: Suggestions Check connections. Restart notebook. Check port settings in Device Manager. Check settings in Control Panel. Use troubleshooters in Windows Help. For USB: contact device vendor and HP Notebook web site (see page vi) for latest USB drivers. For USB: if the device is powered by the USB port, try the other port. Make sure floppy disk is bootable. Make sure floppy drive is connected correctly. Use BIOS configuration utility to check boot order. Verify that host modem supports 56K (V.90) connection speed. Try connecting later in case line quality or other external factor is cause of problem. Check all cables and connections. Connect a standard telephone to the phone line and make sure the line is working. Try another telephone line, preferably one used for a fax machine or modem. If youre in a foreign country, the dial tone may not be recognized by the modem. In Control Panel, disable option that waits for dial tone. Phone message recording services provided by phone companies use broken dial tone to indicate waiting message. This can prevent notebook from detecting dial tone.

CPU Serial Number (on selected models) Components Menu Keyboard Numlock LCD Display on/off (selected models) LCD Display Date/Time (selected models)
Security Menu Set Admin Password
Description Press Enter to set, change, or clear the administrator password, which protects BIOS settings. The password can have no more than 8 characters (0-9, A-Z), and cannot include special or accented characters. Also sets whether the password is required when the notebook boots, or to enter the BIOS configuration utility. Press Enter to set, change, or clear the user password. The password can have no more than 8 characters (0-9, A-Z), and cannot include special or accented characters. (The administrator password must be set first.) Also sets whether the password is required when the notebook boots, or to enter the BIOS configuration utility. Description Saves changes, then exits and reboots. Discards any changes made since last save, then exits and reboots. Does not affect password, date, or time changes. Restores default settings, and remains in the utility. Does not affect password, date, or time changes. Discards any changes made since last save, and remains in the utility. Does not affect password, date, or time changes.

Default Enter

Set User Password
Exit Menu Save and Reboot Exit (No Save) Default Settings Restore Settings
Updating the Notebooks BIOS
Hewlett-Packard may provide updates to the notebooks BIOS to enhance the capabilities of your system. Check the HP Business Support web site (www.hp.com/go/bizsupport). Installation utilities and instructions will be provided with the updates.

Replaceable Parts

This chapter contains an exploded view of the notebook, and lists of replaceable parts:
Figure 4-1. Exploded View
Table 4-1. Replaceable Parts for the Pavilion zt100/xz100 Series
Description 16 Antenna kit, Bluetooth Battery, LiIon 8-cell Case, Top Case, Bottom Case, Bottom-Wireless Cover, keyboard (with LED lens) Cover, keyboard 15-in Display, 14" XGA Display, 14" XGA w/BT Display, 14" XGA w/WL Display, 15" SXGA+ Display, 15" SXGA+w/BT Display, 15" SXGA+w/WL Display, 15" XGA Display, 15" XGA w/BT Display, 15" XGA w/WL Door set Door set, service Drive, DVD module Drive, DVD/CD-RW Combo module Module, weight-saving Drive, hard disk (20,GB, 9.5mm, Toshiba FDB ATA100) Drive, hard disk (20 GB, 9.5mm, Hitachi ATA100) Drive, hard disk (20,GB, 9.5mm, IBM FDB ATA100) Drive, hard disk (30 GB, 9.5mm, Hitachi FDB ATA100) Drive, hard disk (30 GB, 9.5mm, IBM [Cascade] FDB ATA100) Drive, hard disk (30 GB, 9.5mm, Hitachi (Titan) ATA100) Drive, hard disk (40 GB, 9.5mm, Toshiba ATA100) Drive, hard disk (40 GB, 9.5mm, Hitachi ATA100) Drive, hard disk (40 GB, 9.5mm, IBM FDB ATA100) Fan, heatsink Guide, hard disk drive tray Guide set, optical disk drive tray (L/R) Heatsink, CPU (without fan) Hinge saddle set (L/R) Keyboard, French Keyboard, French Canadian Keyboard, Spanish Keyboard, UK English Part Number F3377-60922 F3172-60901 F3398-60920 F3398-60923 F3398-60922 F3398-60917 F3379-60913 F3398-60970 F3398-60972 F3398-60974 F3398-60977 F3398-60979 F3398-60981 F3398-60976 F3398-60978 F3398-60980 F3377-60933 F3377-60979 F3398-60911 F3398-60912 F3398-60913 0950-4287 0950-4310 0950-4318 0950-4312 0950-4319 0950-4360 0950-4288 0950-4313 0950-4320 F3398-60935 F3398-60932 F3398-60943 F3398-60933 F3398-60938 F3428-60903 F3428-60909 F3428-60905 F3428-60902 Exchange Part Number UserRepl. No Yes No No No Yes No No No No No No No No No No Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No No No Yes Yes Yes