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HP Pavilion zt1100/xz100 Omnibook xt1000

Service Manual

Notice
In a continuing effort to improve the quality of our products, technical and environmental information in this document is subject to change without notice. This manual and any examples contained herein are provided "as is" and are subject to change without notice. Hewlett-Packard Company makes no warranty of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard Co. shall not be liable for any errors or for incidental or consequential damages in connection with the furnishing, performance, or use of this manual or the examples herein. Consumer transactions in Australia and the United Kingdom: The above disclaimers and limitations shall not apply to Consumer transactions in Australia and the United Kingdom and shall not affect the statutory rights of Consumers. © Copyright Hewlett-Packard Company 2000­2001. All rights reserved. Reproduction, adaptation, or translation of this manual is prohibited without prior written permission of Hewlett-Packard Company, except as allowed under the copyright laws. The programs that control this product are copyrighted and all rights are reserved. Reproduction, adaptation, or translation of those programs without prior written permission of Hewlett-Packard Co. is also prohibited. Portions of the programs that control this product may also be copyrighted by Microsoft Corporation, SystemSoft Corp., Insyde Software Corporation, S3 Graphics Incorporated, and Adobe Systems Incorporated. See the individual programs for additional copyright notices. This product incorporates copyright protection technology that is protected by method claims of certain U.S. patents and other intellectual property rights owned by Macrovision Corporation and other rights owners. Use of this copyright protection technology must be authorized by Macrovision Corporation and is intended for home and other limited viewing uses only unless otherwise authorized by Macrovision Corporation. Reverse engineering or disassembly is prohibited. Microsoft®, MS-DOS®, and Windows® are U.S. registered trademarks of Microsoft Corporation. Pentium® and the Intel Inside logo are U.S. registered trademarks and CeleronTM and SpeedStepTM are U.S. trademarks of Intel Corporation. Adobe® and Acrobat® are trademarks of Adobe Systems Incorporated. All certifications may not be completed at product introduction. Check with your HP reseller for certification status. This equipment is subject to FCC rules. It will comply with the appropriate FCC rules before final delivery to the buyer. Hewlett-Packard Company Mobile Computing Division 19310 Pruneridge Ave. Cupertino, CA 95014, U.S.A.

Edition History
Edition 1.........................January 2002

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HP Pavilion zt1100/xz100 Omnibook xt1000

Contents
Product Information ......................................................................................................1-1
Technology Codes.........................................................................................................................1-2 Features .........................................................................................................................................1-3 Operation.......................................................................................................................................1-6 Turning the Notebook On and Off .........................................................................................1-6 Checking the Notebook's Status ............................................................................................1-7 Using Fn Hot Keys .................................................................................................................1-8 Resetting the Notebook ..........................................................................................................1-9 Using the CD or DVD Player (selected models)..................................................................1-10 Specifications ..............................................................................................................................1-11 Hardware Specifications.......................................................................................................1-11 Internal Design ............................................................................................................................1-14

Removal and Replacement ............................................................................................2-1
Disassembly Flowchart..................................................................................................................2-2 Removing the Battery (User-Replaceable)....................................................................................2-4 Removing a Plug-In Module (User-Replaceable) .........................................................................2-5 Removing the Hard Disk Drive (User-Replaceable).....................................................................2-6 Recovering and Reinstalling Software ...................................................................................2-8 Removing the Keyboard Cover (User-Replaceable) .....................................................................2-9 Removing the Keyboard (User-Replaceable)..............................................................................2-11 Removing an SDRAM Module (User-Replaceable)...................................................................2-13 Removing an Expansion SDRAM Module ..........................................................................2-13 Removing the System SDRAM Module ..............................................................................2-14 Replacing Small Parts (User-Replaceable) .................................................................................2-15 Removing the Mini-PCI Card (HP Authorized Service Providers Only)....................................2-16 Removing the Display Assembly (HP Authorized Service Providers Only) ..............................2-18 Removing Display Assembly Components (HP Authorized Service Providers Only) ...............2-20 Removing the Fan and Heatsink (HP Authorized Service Providers Only)................................2-22 Removing the CPU Module (HP Authorized Service Providers Only) ......................................2-25 Removing the Top Case (HP Authorized Service Providers Only) ............................................2-27 Removing the Hinge Saddles (HP Authorized Service Providers Only) ....................................2-30 Removing the Motherboard or Bottom Case (HP Authorized Service Providers Only).............2-32 Reinstalling the Motherboard ...............................................................................................2-34 Replacing the Bottom Case ..................................................................................................2-35 Removing Notebook Components (HP Authorized Service Providers Only) ............................2-37

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

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iii

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 ................................................................... 2-28 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

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Tables
Table 1-1. Pavilion zt1100/xz100 and Omnibook xt1000 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/xz100 and Omnibook xt1000 Series Hardware Specifications ..............1-11 Table 1-5. Pavilion zt1100/xz100 and Omnibook xt1000 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 zt1100/xz100 Series.....................................................4-3 Table 4-2. Replaceable Parts for the Omnibook xt1000 Series ...........................................................4-5 Table 5-1. TFT LCD Guidelines (14.1/15.0-in XGA) .........................................................................5-3

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Introduction
This manual provides reference information for servicing HP Pavilion zt1100/xz100 and Omnibook xt1000 notebook PCs. It is for use by HP-authorized service personnel while installing, servicing, and repairing these products. The manual is designed as a self-paced guide that will train you to install, configure, and repair these notebooks. The manual is self-contained, so you can follow it without having equipment available. The following table lists other sources of information about the notebook and related products.

Source HP Notebook web site

HP Business Support web Site HP Partnership web site HP Asia Pacific Channel Support Centre for DPSP Partners HP/MCD web site America Online CompuServe HP Support Assist CD Microsoft Windows manual Microsoft web site

Address or Number http://www.hp.com/notebooks (European mirror: http://www.europe.hp.com/notebooks) www.hp.com/go/bizsupport http://partner.americas.hp.com http://www.hp.com.au

Comments

Restricted to Authorized Resellers only. Restricted to DPSP Partners only.

http://www.mcd.hp.com Keyword: HP GO HP (800) 457-1762 (801) 431-1587

http://www.microsoft.com

HP's internal web site for division information. Call (800) 827-6364 for membership within the US. Call (800) 524-3388 for membership within the US. US and Canada. Outside US and Canada. Information about Windows operating system. Information and updates for Windows operating systems.

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1
Product Information
The HP Pavilion zt1100/xz100 and Omnibook xt1000 series are reliable notebook computers for the budget-minded user--whether at school, at home, or as part of a growing business--who wants a thin, light notebook that will meet basic mobile computing needs.
Table 1-1. Pavilion zt1100/xz100 and Omnibook xt1000 Series Models
Product CPU 1 Display Hard Drive 20 GB 20 GB 20 GB 30 GB 40 GB 40 GB 40 GB 20 GB 20 GB 20 GB 20 GB 20 GB 20 GB 20 GB 20 GB 20 GB 20 GB 30 GB 30 GB 30 GB Standard SDRAM 256 MB 256 MB 256 MB 512 MB 512 MB 512 MB 512 MB 128 MB 256 MB 256 MB 256 MB 256 MB 512 MB 256 MB 256 MB 256 MB 256 MB 256 MB 256 MB 512 MB CD/DVD drive 2 DVD Combo Combo Combo Combo Combo Combo DVD DVD Combo Combo Combo Combo Combo DVD DVD Combo Combo Combo Combo Fullfeatured 3 No No Yes Yes Yes Yes Yes No No No Yes Yes Yes Yes No Yes Yes Yes Yes Yes Modem/ LAN 56K/LAN 56K/LAN 56K/LAN 56K/LAN 56K/LAN 56K/LAN 56K/LAN 56K/LAN 56K/LAN 56K/LAN 56K/LAN 56K/LAN 56K/LAN 56K/LAN 56K/LAN 56K/LAN 56K/LAN 56K/LAN 56K/LAN 56K/LAN 802.11b Wireless

Pavilion zt1100/xz100 F3377H / zt1120 F3378H / zt1130 F3379H / zt1150 F3380H / zt1170 F3387H / zt1180 F3381H / zt1190 F3386H / xz185 F3382H / zt1121s F3388H / zt1131s F3390H / zt1141s F3383H / zt1141 F3389H / zt1151 F3391H / zt1161 F3384H / zt1171 Omnibook xt1000 F3428H / xt1000s F3429H / xt1000 F3430H / xt1000 F3431H / xt1000 F3432H / xt1000 F3433H / xt1000 Cel 1.13 GHz PIII 1.13 GHz PIII 1.13 GHz PIII 1.13 GHz PIII 1.20 GHz PIII 1.20 GHz 14.1-in TFT XGA 14.1-in TFT XGA 14.1-in TFT XGA 15.0-in TFT XGA 15.0-in TFT XGA 15.0-in TFT SXGA+ Cel 1.06 GHz Cel 1.13 GHz Cel 1.2 GHz PIII 1.13 GHz PIII 1.2 GHz PIII 1.2 GHz PIII 1.13 GHz Cel 1.06 GHz Cel 1.06 GHz Cel 1.2 GHz Cel 1.06 GHz Cel 1.06 GHz Cel 1.2 GHz PIII 1.06 GHz 14.1-in TFT XGA 14.1-in TFT XGA 15.0-in TFT XGA 15.0-in TFT XGA 15.0-in TFT SXGA+ 15.0-in TFT SXGA+ 15.0-in TFT XGA 14.1-in TFT XGA 14.1-in TFT XGA 14.1-in TFT XGA 14.1-in TFT XGA 15.0-in TFT XGA 15.0-in TFT XGA 15.0-in TFT XGA

This table lists only base product configurations--custom configurations are not included.Ã
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1 2 3

Intel Mobile Pentium III (PIII-M) or Celeron-T (Cel) processor. Combo optical drive = DVD + CD-RW. Full-featured SKUs include multimedia buttons, LCD status display, and IEEE1394.

HP Pavilion zt1100/xz100 Omnibook xt1000

Product Information

1-1

Technology Codes
HP does not change the name of a product every time the product's technology changes. While this helps ensure continuing market momentum for HP products, it complicates technology deployment and support processes. To help solve this problem, HP has added a technology code to the serial number of each of its products. Since the BIOS must be matched to the notebook's hardware, the same code is used for the BIOS and the hardware. This manual refers to technology code deferences where applicable. The table below shows the technology codes and the changes they signify for the products. Before downloading software or drivers or performing repairs, note the technology code for the HP notebook model. Note that the first two characters of the BIOS ID (for example, IB.M1.02) indicate the hardware technology. You can also determine the BIOS ID using the BIOS configuration utility, or by pressing Esc during the boot process when the HP logo appears. This manual contains service information for products with the following technology code.
Technology code IB Product name Pavilion zt1100/xz100 series Omnibook xt1000 series Details Intel Pentium III-M and Celeron-T based platform supported with Via chipset and S3 integrated graphics.

1-2

Product Information

HP Pavilion zt1100/xz100 Omnibook xt1000

Features
The following illustrations show the notebook's main external features. For an exploded view of the notebook, see page 4-2.

Figure 1-1. Front View
1. One-Touch buttons. 2. Power button. 3. Keyboard status lights: Caps Lock, Num Lock, CD drive activity. 4. Touch pad/scroll pad on-off button (with on-off indicators on either side). 5. Left and right click buttons. 6. Touch pad. 7. Scroll pad 8. Volume controls (selected models). 9. Mute button and indicator light (selected models). 10. Removable CD, DVD, CD-RW, or DVD/CD-RW drive. 11. CD/DVD eject button. 12. Speaker (one on each side). 13. Latch. 14. Built-in microphone.

HP Pavilion zt1100/xz100 Omnibook xt1000

Product Information

1-3

Figure 1-2. Back View
15. AC adapter jack. 16. Parallel port (LPT1) (colored burgundy). 17. External monitor (VGA) port (colored blue). 18. S-video (TV out) port (colored yellow) (selected models). 19. Universal serial bus (USB) ports (2). 20. Audio line-out jack (colored lime green) and external microphone jack (colored pink). 21. Reset switch. 22. Kensington lock slot (security connector). 23. LAN port and indicators. 24. Modem port (selected models). 25. IEEE 1394 connector (selected models). 26. PC Card slot (Type II or Type III, lower slot only). 27. PC Card eject button. 28. Hard disk drive. 29. Wireless on-off button and indicator light (selected models). 30. Universal serial bus (USB) port. 31. Headphone jack (colored lime green).

1-4

Product Information

HP Pavilion zt1100/xz100 Omnibook xt1000

Figure 1-3. Bottom View
32. Infrared port (selected models). 33. Battery. 34. CD/DVD drive latch. 35. Expansion SDRAM cover. 36. Battery latch. 37. Docking port. 38. Mini-PCI cover. 39. Hard disk drive retaining screws.

HP Pavilion zt1100/xz100 Omnibook xt1000

Product Information

1-5

Operation
This section gives an overview of the notebook's 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 notebook--depending 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 doesn't 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.

1-6

Product Information

HP Pavilion zt1100/xz100 Omnibook xt1000

Checking the Notebook's Status
The notebook's 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.

HP Pavilion zt1100/xz100 Omnibook xt1000

Product Information

1-7

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 key--a shortcut key sequence--for 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).

1-8

Product Information

HP Pavilion zt1100/xz100 Omnibook xt1000

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.

HP Pavilion zt1100/xz100 Omnibook xt1000

Product Information

1-9

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 notebook's Reference Guide.

Figure 1-7. Multimedia Buttons and Status Panel
1. MP3 player launch button. 2. Previous track button. 3. Next track button. 4. Status panel button. 5. Status panel. 6. Play/Pause button. 7. Stop button. 8. Multimedia power switch and indicator light.

1-10

Product Information

HP Pavilion zt1100/xz100 Omnibook xt1000

Specifications
The following tables list the specifications for the notebook and its accessories. These are subject to change: for the latest versions, see the HP Notebook web site, www.hp.com/notebooks (in Europe: www.europe.hp.com/notebooks).

Hardware Specifications
Table 1-4. Pavilion zt1100/xz100 and Omnibook xt1000 Series Hardware Specifications
Physical Attributes Dimensions: 13.3/14.1-in models: 318 × 273 × 35.8 mm (12.5 × 10.75 × 1.4 in). 15-in models: 330 × 278 × 37.5 mm (12.99 × 10.94 × 1.47 in). Thickness varies across unit. Weight: 2.3 kg (5.0 lbs) minimum, depending on model. Intel Mobile Pentium III-M processor (starting at 933 MHz) with SpeedStep technology. ­or­ Intel Celeron processor (starting at 866 MHz). 1.6-V core, 2.5-V external, low-power processor. 32-bit PCI bus. 13.3/14.1/15-in XGA (1024x768) or 15-in SXGA+ (1400x1050) TFT LCD display. Supports 16 million colors, 3D and OpenGL graphics. Supports hardware acceleration for MPEG. Display driver supports MPEG2 overlay. Supports simultaneous LCD+CRT operation (same image on both displays). Integrated VGA. Up to 32-MB video memory (shared with system memory). Supports NTSC and PAL TV. Dual display for LCD and external monitor or TV. Rechargeable lithium-ion or NiMH battery. Battery life depends on notebook type and usage, and battery type and calibration. Low-battery warning. Standby/hibernate and resume capability. Universal AC adapter: 100­240 Vac (50/60 Hz) input, 19 Vdc output, 60 W. 10- to 40-GB removable IDE hard disk drive. Supports optional 1.44-MB floppy disk drive module. 24X CD-ROM, 8X DVD, 8X8X24 CD-RW, or 8X8X24X8 DVD/CD-RW (or higher) removable drive. Two slots for SDRAM expansion (SODIMM, PC133) up to 1024 MB (2x512MB). 133-MHz RAM bus. Built-in microphone. Stereo sound through two built-in speakers. 1.5 W per channel. Polk Audio certified on 15-in models. Dedicated mute and volume controls (selected models). CD player (can play while notebook is on standby, in hibernation, or off). 3D-enhanced PCI bus audio.

Processor and Bus Architecture

Graphics

Power

Mass Storage CD/DVD drive SDRAM Audio System

HP Pavilion zt1100/xz100 Omnibook xt1000

Product Information

1-11

Keyboard and Pointing Devices

Input/Output

Expandability

Security Features

87/88/91-key touch-type QWERTY keyboard with 101/102 key emulation. Embedded numeric keypad. 12 function (Fn) keys. 5 user-programmable One-Touch buttons. Touch pad with lock button and on-off indicator. Left and right click buttons, vertical scroll pad. 3 universal serial bus (USB) ports. 15-pin VGA video-out (blue) with DDC support. (Resolution up to 1600×1200×64K or 16M colors. Refresh rate of 60 to 100 Hz, depending on resolution and color depth.) RJ-45 LAN jack. 25-pin bi-directional high-speed ECP/EPP parallel (burgundy). S-video TV out (yellow) (selected models). 4-Mbps IrDA-compliant infrared port (selected models). IEEE 1394 port (selected models). Docking port: supports optional simple port replicator. One Type II or Type III 16/32-bit PC Card slot (3.3- and 5-V support). CardBus enabled. Optional simple port replicator (selected models). User and administrator passwords. DMI-accessible electronic serial number. Kensington MicroSaver lock slot. Operating temperature: 0 to 40 °C (32 to 104 °F). Operating humidity: 10 to 90 percent RH (0 to 45 °C). Operating altitude: up to 10,000 ft (3000 m) at 25 °C (77 °F). Storage (non-operating) temperature: ­20 to 65 °C (­4 to 149 °F). CPU: Intel Mobile Pentium III or Celeron processor. North Bridge: VIA Pro Savage Pn 133T. South Bridge: VIA VT8231. Display controller: S3 Savage 4 in North Bridge. Audio controller: VIA/Realtek ALC201 AC97 Codec. CD player controller: O2 OZ-163. LAN: Realtek RTL8100L. CardBus controller: ENE 1410. Keyboard/embedded controller: National NS87591. Super I/O: in South Bridge.

Environmental Limits

Major ICs

1-12

Product Information

HP Pavilion zt1100/xz100 Omnibook xt1000

Table 1-5. Pavilion zt1100/xz100 and Omnibook xt1000 Series Accessories
Accessory New Accessories F3172A F3491A F3492A F3493A F3494A D9510B F1455A F1606A F1607A F1608A F1626B F1645A F1747A F1771A F1778A F1778B F1781A F1782A F2020A F2135B F2135C F2136B F2196A F2297A F2298A F3495A F3496A P1980A P1981A Standard LiIon Battery CD-RW Upgrade Module DVD Upgrade Module CD-RW/DVD Combo Drive Simple Port Replicator USB Floppy Disk Drive Module Auto Air Adapter (75 W) Omnibook Ballistic Nylon Case Omnibook Leather Case Omnibook Executive Case 3COM 10/100 Enet PC Card Kensington Lock Defcon Alarm Universal Carrying Case Promotional Carrying Case (NAM & AP) Standard Carrying Case (Europe Only) Ultra Slim Line Adapter (60 W) 3COM Type II Combo Card Executive Leather Case (Europe only) Wireless Comm Access Point Wireless Comm Access Point Wireless PC Card (128 bits) 3Com Bluetooth PC Card Car Adapter, 24 V (EU only) 512 MB PC133 SDRAM 128 MB PC133 SDRAM 256 MB PC133 SDRAM USB Wireless LAN 802.11b USB Wireless LAN Access Point Description

Tested Cross-Platform Accessories

HP Pavilion zt1100/xz100 Omnibook xt1000

Product Information

1-13

Internal Design
The motherboard PCA is the central component of the notebook's 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 notebook's replaceable electronic modules. In addition, the table on page 1-15 lists the roles that the replaceable modules play in each of the notebook's functional subsystems.

Speakers

CPU module

Display assembly

Keyboard cover switch PCA

Fan

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

Hard disk drive

Volume control PCA

Bluetooth PCA

USB PCA

Keyboard

Battery

Figure 1-8. Replaceable Module Diagram

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Product Information

HP Pavilion zt1100/xz100 Omnibook xt1000

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 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. 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 Infrared Wireless

Docking PC card

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Product Information

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2
Removal and Replacement
This chapter shows how to remove and replace the notebook's 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, CD player (page 2-38). PCA, inverter (page 2-20) PCA, motherboard (page 2-32). PCA, USB (page 2-38). 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 M2.5×5mm T-head screw.)

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Disassembly Flowchart
The following diagram shows the general "paths" you will use in disassembling the notebook to access any particular component.
Start

Battery, AC adapter, secondary SDRAM module, mini-PCI card, hard disk drive, DVD/CD-RW drive

Keyboard cover

A

Keyboard

Left speaker

Primary SDRAM

Display assy

Fan

Right speaker

B

Modules on path A · CD player PCA · Infrared PCA · Hard disk drive guide *

Heatsink Top case

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

Hinge saddles

· I/O PCA · Volume control PCA · Docking doors · PCMCIA doors · PCMCIA socket

Motherboard or bottom case

Figure 2-1. Disassembly Flow

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HP Pavilion zt1100/xz100 Omnibook xt1000

Table 2-2. Required Equipment

· ·

#0 Phillips screwdriver, preferably magnetized. Small flat-blade screwdriver.

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

NOTES

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Removing the Battery
(User-Replaceable)
Required Equipment

· ·

None.

Removal Procedure

Slide the battery's 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.

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HP Pavilion zt1100/xz100 Omnibook xt1000

Removing a Plug-In Module
(User-Replaceable)
Required Equipment

· ·

None.

Removal Procedure

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

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Removing the Hard Disk Drive
(User-Replaceable)
Required Equipment

·

#0 Phillips screwdriver.

Removal Procedure

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, M2.5×4mm

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.

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Screws, M2.5x4mm (2)

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 software--see "Recovering and Reinstalling Software," below.

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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 notebook's 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.)

Caution
Be sure to back up the hard disk before proceeding. This procedure formats the hard disk, which erases all data on the disk. After formatting, you must reinstall any applications. Do not interrupt the following process or unplug the AC adapter until the process is complete.

1. Back up all data from the hard disk. 2. Connect the AC adapter to the notebook. This is necessary to provide an uninterrupted power source: the notebook's battery alone is not adequate. 3. Insert Recovery CD disk 1 into the notebook's CD/DVD drive. If the notebook is turned off, use a pin or straightened paper clip to press the release switch on the drive door to open it. 4. Turn on or restart the notebook. 5. When the HP logo appears, press Esc to display the Boot menu. 6. Use the arrow keys to select the CD/DVD drive as the first boot device, then press Enter. 7. When the Recovery CD dialog box appears, follow the displayed instructions. If prompted, accept the recommended partition size. To create the Utility partition without installing the factory software, click Advanced and select not to install the operating system. If the hard disk is partitioned into several drives, you can install the factory software on drive C without affecting other drives. Click Advanced and select to restore only the C partition. 8. When prompted to reboot the notebook, press Ctrl+Alt+Del and follow any instructions that appear.
Note Windows XP supports the NTFS file system.

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HP Pavilion zt1100/xz100 Omnibook xt1000

Removing the Keyboard Cover
(User-Replaceable)
Required Equipment

· ·

#0 Phillips screwdriver. Small flat-blade screwdriver.

Removal Procedure

1. Unplug the AC adapter, if present, and remove the battery. 2. Close the notebook's display, and remove both screws from the backs of the hinge covers.

Figure 2-6. Removing the Keyboard Cover Retaining Screws

3. Open the display so that it lays flat. 4. Use the flat-blade screwdriver to carefully pry up the right end of the keyboard cover just above the Page Up key, then lift the end until the cover unsnaps.

Caution
When removing the keyboard cover, be careful not to pull on the cable that connects the keyboard cover to the notebook.

5. Carefully lift the cover to unsnap the latches above the center One-Touch button and the F1 key, then lift the cover about an inch off of the notebook.

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6. Disconnect the keyboard cover switch cable from the motherboard, and remove the cover from the notebook.

Figure 2-7. Removing the Keyboard Cover Reassembly Notes

· ·

Make sure the keyboard cover switch cable is securely connected to the motherboard. Bend the center of the keyboard cover upward slightly, and insert the tabs on the ends of the cover into the slots in the notebook's case. Fit the hinge covers over the hinges, and gently press the cover into place.

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HP Pavilion zt1100/xz100 Omnibook xt1000

Removing the Keyboard
(User-Replaceable)
Required Equipment

· ·

#0 Phillips screwdriver. Small flat-head screwdriver.

Removal Procedure

1. Unplug the AC adapter, if present, and remove the battery. 2. Remove the keyboard cover (page 2-9). 3. Loosen the three retaining screws along the top of the keyboard (the keyboard retains the screws).

Figure 2-8. Loosening the Keyboard Retaining Screws

Caution
When opening the keyboard, be careful not to pull on the ribbon cable that connects the keyboard to the notebook.

4. Raise the top of the keyboard, then lift the keyboard up and out of the notebook. 5. Lay the keyboard face down on the top case, forward of its normal position, and disconnect the ribbon cable from the motherboard.

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Warning
Do not touch the metal surfaces inside the notebook until they have cooled off. They could be very hot if the notebook was running recently.

Figure 2-9. Disconnecting the Keyboard Reassembly Notes

· ·

Lay the keyboard face down on the top case, forward of its normal position, and reconnect the ribbon cable. Slip the metal tabs on the bottom of the keyboard into their slots in the top case, then lower the keyboard into place.

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HP Pavilion zt1100/xz100 Omnibook xt1000

Removing an SDRAM Module
(User-Replaceable)
The notebook has no SDRAM built into its motherboard, but has two slots for PC133 SDRAM modules: a system SDRAM slot beneath the keyboard (containing an SDRAM module installed at the factory), and an expansion slot on the bottom of the unit.

Caution
Provide proper grounding and handle the SDRAM module only by its edges, or you could damage the module through electrostatic discharge.

Required Equipment

·

#0 Phillips screwdriver.

Removing an Expansion SDRAM Module
Removal Procedure

1. Unplug the AC adapter, if present, and remove the battery. 2. On the bottom of the notebook, loosen the screw holding the SDRAM cover (the cover retains the screws), and remove the cover. 3. Press outward to release the latches at the sides of the SDRAM module (so that the free edge of the module pops up), then pull the module out of the connector.

Figure 2-10. Removing an Expansion SDRAM Module

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Reassembly Notes

·

Carefully press the SDRAM module into the connector at an angle of about 30°, until it is fully inserted. Then press down on both sides of the module until the latches snap closed.

Figure 2-11. Installing an Expansion SDRAM Module

Removing the System SDRAM Module
Removal Procedure

1. Unplug the AC adapter, if present, and remove the battery. 2. Remove the keyboard cover (page 2-9). 3. Open the keyboard (page 2-11, steps 1 though 4). You don't need to disconnect the keyboard cable. 4. Press outward to release the latches at the sides of the SDRAM module (so that the free edge of the module pops up), then pull the module out of the connector.

Figure 2-12. Removing the System SDRAM Module Reassembly Notes

·

Carefully press the SDRAM module into the connector at an angle of about 30°, until it is fully inserted. Then press down on both sides of the module until the latches snap closed.

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HP Pavilion zt1100/xz100 Omnibook xt1000

Replacing Small Parts
(User-Replaceable)
The user can replace the following small parts.
Table 2-4. Replacing Small Parts (User-Replaceable)
Part Cover, mini-PCI Cover, expansion SDRAM Covers, screw (on display bezel) Feet, rubber Part Numbers Included in door kit F3377-60933 Included in door kit F3377-60933 Included in feet/cover kit F3377-60967 Included in feet/cover kit F3377-60967 Replacement Procedure On the bottom of the notebook, loosen the screw in the mini-PCI cover (the cover retains the screw) and remove the cover. On the bottom of the notebook, loosen the screw in the SDRAM module cover (the cover retains the screw) and remove the cover. Insert a small flat-blade screwdriver under the cover and pry it loose. To replace, firmly press the adhesive side of the cover into the recess. Insert a small flat-blade screwdriver under the foot and pry it loose. To replace, firmly press the adhesive side of the foot into the recess.

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Removing the Mini-PCI Card
(HP Authorized Service Providers Only)
Certain notebook models include a mini-PCI card that contains either a modem or combined modem and 802.11 wireless.

Caution
Provide proper grounding and handle the card only by its edges, or you could damage it through electrostatic discharge. Required Equipment

·

#0 Phillips screwdriver.

Removal Procedure

1. Unplug the AC adapter, if present, and remove the battery. 2. On the bottom of the notebook, loosen the screw holding the mini-PCI cover (the cover retains the screw), and remove the cover. 3. Press outward to release the latches at the sides of the card, and carefully lift its free edge up. 4. Disconnect the cable(s) from the card. 5. Gently pull the card out of its connector.

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Figure 2-13. Removing the Mini-PCI Card Reassembly Notes

· ·

Reattach the cable(s) to the card, and tuck them into the compartment. Gently press the card into the connector at an angle of about 30°, until it is fully inserted. Then press down on both sides of the card until the latches snap closed.

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Removing the Display Assembly
(HP Authorized Service Providers Only)
Required Equipment

·

#0 Phillips screwdriver.

Removal Procedure

1. Unplug the AC adapter, if present, and remove the battery. 2. Remove the keyboard cover (page 2-9). 3. Remove both retaining screws from the bottom of the notebook.

Screws, M2.5x6mm (2)

Figure 2-14. Removing the Display (1)

4. Open the display so that it lays flat. 5. Remove the screw from the left speaker, and move the speaker to the side. Be careful not to pull on the wires connecting the speaker to the motherboard. 6. Disconnect the display cable and ground wire from the motherboard, and carefully remove the cable from the retaining clip near the left display hinge. 7. If present, disconnect the wireless cables near the right display hinge. 8. Remove the retaining screws from the lugs just below the display hinges. 9. Lift the display off of the notebook.

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HP Pavilion zt1100/xz100 Omnibook xt1000

Screws, M2×4mm (2)

Screw, M2×4mm

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.

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Removing Display Assembly Components
(HP Authorized Service Providers Only)
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

·

#0 Phillips screwdriver.

Removal Procedure

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.

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HP Pavilion zt1100/xz100 Omnibook xt1000

Screws, M2.5x6mm (4)

Screw, M2×4mm Screws, M2×4mm (2) Inverter PCA

802.11b antenna

Screws, M2×4mm (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 covers 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.

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Removing the Fan and Heatsink
(HP Authorized Service Providers Only)
Required Equipment

·

#0 Phillips screwdriver.

Removal Procedure

1. Unplug the AC adapter, if present, and remove the battery. 2. Remove these additional assemblies:
· ·

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.

Caution
Do not spin the fan blades with your finger, or you could damage the fan's bearings.

7. Remove the heatsink's four retaining screws (with springs attached). 8. Lift the heatsink out of the notebook.

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Screw, M2×4mm

Screws, heatsink (with springs) (4)

Screws, M2.5x6mm (2)

Figure 2-17. Removing the Fan and Heatsink

Caution
Be careful not to touch the upper surface of the CPU module, or you could damage it.

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Reassembly Notes

· · · · ·

Make sure the fan wires are not pinned under the fan, and is securely plugged into its socket. If present, make sure the wireless cables are not trapped under or behind the fan, or beneath the cooling fins. Insert the cooling fins into the opening in the bottom case, then set the heatsink onto its standoffs. Tighten the heatsink screws in the order indicated by the numbers on the heatsink. Make sure the upper surface of the heatsink is clean, and install a new thermal pad. Be careful not to scratch the upper surface of the pad, and make sure the pad lies flat on the heatsink.

Figure 2-18. Installing a New Thermal Pad

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HP Pavilion zt1100/xz100 Omnibook xt1000

Removing the CPU Module
(HP Authorized Service Providers Only)
Required Equipment

· ·

#0 Phillips screwdriver. Small flat-blade screwdriver.

Removal Procedure

Caution
Be careful not to touch the upper surface of the CPU module. Handle it only by its edges, or you could damage it.

1. Unplug the AC adapter, if present, and remove the battery. 2. Remove these additional assemblies:
· · ·

Keyboard cover (page 2-9). Keyboard (page 2-11). Fan and heatsink (page 2-22).

3. Carefully insert the tip of a flat-blade screwdriver in the CPU module lock mechanism, and turn the screwdriver a few degrees counterclockwise until the mechanism clicks into its OPEN position. (The CPU socket moves slightly to the left when this happens.) Grasp the CPU module by its edges, and carefully lift it straight up and off of its socket.

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Figure 2-19. Removing the CPU Module Reassembly Notes

· ·

Carefully reinsert the module into its socket. Make sure the module is fully seated, and that none of its pins are bent or otherwise damaged. Carefully insert the tip of the flat-blade screwdriver in the CPU module lock mechanism, and turn the screwdriver a few degrees clockwise until the mechanism clicks into its LOCK position. (The CPU socket moves slightly to the right when this happens.)

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HP Pavilion zt1100/xz100 Omnibook xt1000

Removing the Top Case
(HP Authorized Service Providers Only)
Required Equipment

·

#0 Phillips screwdriver.

Removal Procedure

1. Unplug the AC adapter, if present, and remove the battery. 2. Remove these additional assemblies:
· · · · ·

Plug-in module (page 2-5). Hard disk drive (page 2-6). Keyboard cover (page 2-9). Keyboard (page 2-11). Display assembly (page 2-18).

3. Remove the retaining screws from the bottom of the notebook. 4. Remove the screws from just inside the hard disk drive compartment, and just inside the plug-in module compartment.

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Screws, M2×4mm (2) Screws, M2.5x6mm (2) Screws, M2.5x6mm (3)

Screws, M2×4mm (2) Screws, M2×4mm (3)

14-in chassis

Screws, M2.5x6mm (7) 15-in chassis

Figure 2-20. Removing the Top Case Retaining Screws

5. Disconnect the touch pad cable and the CD player PCA cable from the motherboard. 6. If present, remove the wireless cables from their slot in the top case. 7. Remove the retaining screws from the top case. 8. Remove the retaining screw from the right speaker, disconnect its wires from the motherboard, and lift the speaker out of the notebook. 9. Raise the back of the top case, then gradually loosen it, moving around the edges of the case toward the front of the notebook.

Caution
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).

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HP Pavilion zt1100/xz100 Omnibook xt1000

Screws, M2×4mm (2) Screw, M2×4mm

Screws, M2.5x6mm (2)

Screws, M2×4mm (2)

Figure 2-21. Removing the Top Case Reassembly Notes

· · ·

Make sure the touch pad cable and CD player PCA cable 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.

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Removing the Hinge Saddles
(HP Authorized Service Providers Only)
Required Equipment

·

#0 Phillips screwdriver.

Removal Procedure

1. Unplug the AC adapter, if present, and remove the battery. 2. Remove these additional assemblies:
· · · ·

Keyboard cover (page 2-9). Keyboard (page 2-11). Display assembly (page 2-18). Top case (page 2-27).

3. Remove the two retaining screws from the right hinge saddle, and lift the hinge saddle out of the notebook. 4. Remove the three retaining screws from the left hinge saddle, and lift the hinge saddle out of the notebook.

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HP Pavilion zt1100/xz100 Omnibook xt1000

Screws, M2.5x6mm (3)

Screws, M2.5x6mm (2)

Screw, M2×4mm

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.

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Removing the Motherboard or Bottom Case
(HP Authorized Service Providers Only)
Required Equipment

·

#0 Phillips screwdriver.

When Installing a New Motherboard

Before replacing the motherboard, you must (if possible) electronically store the motherboard's 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.
Removal Procedure

1. Unplug the AC adapter, if present, and remove the battery. 2. Remove these additional assemblies:
· · · · · · · · · · · ·

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 both retaining screws from the motherboard.

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5. Lift the front edge of the motherboard slightly, then carefully lift the motherboard forward and out of the bottom case.

Screws, M2.5x6mm (2)

Screws, M2.5x6mm (2)

Screws, M2×4mm (2)

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.

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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 case--near the CPU module and PC card guide--fit through the corresponding openings in the motherboard.
When Installing a New 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:
· ·

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. 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).

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HP Pavilion zt1100/xz100 Omnibook xt1000

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

HP Pavilion zt1100/xz100 Omnibook xt1000

Removal and Replacement

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Installing a New Serial Number Label

Download the latest version of the serial number label template (