Download: HP OmniBook 900 Service Manual

® HP OmniBook 900 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 ...
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® HP OmniBook 900 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 1999. 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., Phoenix Technologies, Ltd., and NeoMagic, Inc. See the individual programs for additional copyright notices. Microsoft, MS, MS-DOS, and Windows are registered trademarks of Microsoft Corporation. Pentium and the Intel Inside logo are U.S. registered trademarks of Intel Corporation. TrackPoint is a U.S. registered trademark of International Business Machines. 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 1999 ii HP OmniBook 900,

Contents

1. Product Information ...1-1 Features and Operation ... 1-3 Turning the OmniBook On and Off... 1-4 Checking the Status of the OmniBook... 1-5 Using Fn Hot Keys... 1-6 Resetting the OmniBook... 1-6 System Resources ... 1-7 Specifications... 1-9 Internal Design... 1-12 2. Removal and Replacement ...2-1 Removing the Battery (User-Replaceable) ... 2-3 Removing a RAM Board (User-Replaceable) ... 2-4 Removing the Hard Disk Drive (User-Replaceable) ... 2-5 Replacing Small Parts (User-Replaceable)... 2-7 Removing the LCD Module (HP Authorized Service Providers Only)... 2-8 Removing the Keyboard (HP Authorized Service Providers Only) ... 2-10 Removing the CPU Module (HP Authorized Service Providers Only)... 2-12 Removing the Display Assembly (HP Authorized Service Providers Only)... 2-14 Removing the Top Case (HP Authorized Service Providers Only)... 2-16 Removing the Motherboard or Bottom Case (HP Authorized Service Providers Only) ... 2-18 Removing the BIOS IC (HP Authorized Service Providers Only)... 2-21 Removing Other Components (HP Authorized Service Providers Only)... 2-23 3. Troubleshooting and Diagnostics...3-1 Troubleshooting... 3-2 Troubleshooting the Problem... 3-2 Verifying the Repair ... 3-3 Suggestions for Troubleshooting ... 3-4 Diagnostic Tools... 3-12 OmniBook Diagnostic Program... 3-12 Power-On Self-Test ... 3-17 Sycard PCCtest 450 CardBus Card (Optional)... 3-20 Desktop Management Interface (DMI)... 3-21 BIOS Setup Utility... 3-23 4. Replaceable Parts ...4-1 5. Reference Information...5-1 Password Removal Policy ... 5-1 Hewlett-Packard Display Quality Statement ... 5-2 HP OmniBook 900 iii,

Figures

Figure 1-1. OmniBook - Front View...1-3 Figure 1-2. OmniBook - Side View ...1-3 Figure 1-3. OmniBook - Rear View...1-3 Figure 1-4. Replaceable Module Diagram ...1-12 Figure 2-1. Removing the Battery ...2-3 Figure 2-2. Removing a RAM Board ...2-5 Figure 2-3. Removing the Hard Disk Drive ...2-6 Figure 2-4. Installing a Hard Drive in the Cover...2-6 Figure 2-5. Removing the LCD Module ...2-9 Figure 2-6. Removing the Keyboard ...2-11 Figure 2-6. Removing the CPU Module...2-13 Figure 2-8. Removing the Display Assembly...2-15 Figure 2-9. Removing the Top Case...2-17 Figure 2-10. Removing the Motherboard ...2-19 Figure 2-11. Removing the BIOS IC...2-22 Figure 3-1. Basic Troubleshooting Steps ...3-2 Figure 3-2. OmniBook Diagnostic Screens — Basic and Advanced ...3-12 Figure 3-3. Serial and Parallel Loopback Connectors...3-14 Figure 4-1. Exploded View ...4-2 Figure 4-2. Display Components...4-5

Tables

Table 1-1. OmniBook 900 Models...1-1 Table 1-2. Product Comparisons ...1-2 Table 1-3. Activating Power Modes...1-4 Table 1-4. Main Status Lights (Motherboard)...1-5 Table 1-5. Keyboard Status Lights (Motherboard)...1-5 Table 1-6. Fn Hot Keys ...1-6 Table 1-7. System Interrupts ...1-7 Table 1-8. System Memory ...1-7 Table 1-9. System Input/Output Addresses (100-3FF)...1-8 Table 1-10. DMA Channels ...1-8 Table 1-11. OmniBook 900 Specifications ...1-9 Table 1-12. OmniBook 900 Accessories...1-11 Table 1-13. Functional Structure...1-13 Table 2-1. Removal Cross-Reference...2-1 Table 2-2. Required Equipment ...2-2 Table 2-3. Recommended Screw Torques...2-2 Table 2-4. RAM Board Replacement Part Numbers...2-4 Table 2-5. Hard Disk Drive Replacement Part Numbers ...2-5 Table 2-6. Replacing Small Parts (User-Replaceable) ...2-7 Table 2-7. Removing Display Components ...2-24 Table 2-8. Removing Top Case Components...2-25 Table 2-9. Removing Bottom Case Components ...2-25 Table 3-1. Scope of Diagnostic Tools ...3-4 Table 3-2. Troubleshooting Suggestions...3-5 Table 3-3. OmniBook Diagnostic Error Codes ...3-14 Table 3-4. POST Terminal-Error Beep Codes ...3-17 Table 3-5. POST Messages ...3-18 iv HP OmniBook 900, Table 3-6. BIOS Setup Menus and Parameters ... 3-23 Table 4-1. OmniBook Replaceable Parts ... 4-3 Table 4-2. Assembly-Component Breakdown... 4-6 Table 4-3. Accessory Replaceable Parts... 4-6 Table 4-4. Part Number Reference... 4-7 Table 5-1. OmniBook 900 LCD Guidelines (TFT) ... 5-3 HP OmniBook 900 v,

Introduction

This service manual provides reference information for the HP OmniBook 900. It is intended to be used by HP-authorized service personnel in the installation, servicing, and repair of these products. The manual is designed self-contained. It is intended that you can follow this manual without having equipment available. The following table lists additional places where you can get supplementary information about OmniBook products. Sources of OmniBook Information Source Address or Number Comments HP External Web http://www.hp.com/omnibook No usage restriction. (http://www.europe.hp.com/omnibook, European mirror) HP US Reseller Web http://partner.americas.hp.com Restricted to Authorized Resellers only. HP Asia Pacific Channel http://www.hp.com.au Restricted to DPSP Partners only. Support Centre for DPSP Partners America Online Keyword: HP Call (800) 827-6364 for membership within the US. CompuServe GO HP Call (800) 524-3388 for membership within the US. HP Bulletin Board Service Refer to the latest Product Support Plan for non-US BBS numbers. HP First (automated fax) (800) 333-1917 US and Canada. (801) 344-4809 Outside US and Canada. (800) 544-9976 Reseller support number (enter outlet id number). HP Support Assist CD-ROM (800) 457-1762 US and Canada. (801) 431-1587 Outside US and Canada. Microsoft Web http://www.microsoft.com Information and updates for Windows operating systems. vi HP OmniBook 900,

Product Information

The HP OmniBook 900 provides desktop-quality performance and expandability in a highly portable form. It uses high-performance component technologies that make it capable of serving as a desktop computer that you can conveniently take anywhere. Table 1-1. OmniBook 900 Models OmniBook CPU ** Display Hard Drive Floppy Drive CD-ROM Standard Product * Drive RAM F1711x Pentium II 12.1-inch 4.3 GB 1.44 MB None 32 MB 300 MHz SVGA TFT (none) (F1472A) F1712x Pentium II 6.4 GB 366 MHz (F1707A) This table lists only base product configurations—custom configurations are not included. * For the products listed: "x" suffix means "N", "NT", or “NV” for Windows NT 4.0 installed (marketing distinction only), or "W", "WT", or “WV” for Windows 95/98 installed (marketing distinction only). ** Intel Mobile Pentium II processor. HP OmniBook 900 Product Information 1-1, Table 1-2. Product Comparisons OmniBook 900 OmniBook 7150 OmniBook 4150 OmniBook 2100 Processor * Intel Pentium II (366 or Intel Pentium II (300 Intel Pentium II (366, Pentium II (300, 266, 300(PE) MHz). MHz). 333, or 300 MHz). or 233 MHz), or Pentium (233 or 200 MHz). Memory 32 MB RAM on 64 MB RAM in system 128 or 64 MB RAM in 32 MB RAM on motherboard. slot. slot. motherboard. Expandable to Expandable to Expandable to Expandable to 160, 160 MB. 320 MB. 256 MB. 192, or 288 MB. Display 12.1-inch TFT SVGA 14.1-inch TFT XGA 14.1-inch TFT XGA 13.3-inch TFT XGA display. display. display. display, or 12.1-inch TFT or DSTN SVGA display. Video AGP video. AGP video. AGP video. PCI local bus video. 256-bit graphics 64-bit graphics 256-bit graphics 128-bit graphics controller with 2.5 MB controller with 4 MB controller with 2.5 MB controller with 2 MB internal video RAM. external video RAM, internal video RAM. internal video RAM. Up to 16M colors 3D graphics Up to 16M colors Up to 64K colors (XGA). acceleration. (XGA). (XGA), 16M colors Zoomed Video Up to 16M colors Zoomed Video (SVGA). enabled. (XGA). enabled. Zoomed Video Zoomed Video enabled. enabled. Operating Windows 95, Windows 95, Windows 95, Windows 95, System Windows 98, or Windows 98, or Windows 98, or Windows 98, or Windows NT 4.0 Windows NT 4.0 Windows NT 4.0 Windows NT 4.0 preinstalled. preinstalled. preinstalled. preinstalled. Desktop DMI 2.0. DMI 2.0. DMI 2.0. DMI 2.0. Management HP TopTools 3.0. HP TopTools 3.0. HP TopTools 3.0. HP TopTools 2.6 or Interface 3.0. Power APM 1.2. APM 1.2. APM 1.2. APM 1.2. Management ACPI compliant. ACPI compliant. ACPI compliant. ACPI compliant. Power States On, Standby, Suspend, On, Standby, Suspend, On, Standby, Suspend, On, Standby, Suspend, Hibernate, Off. Hibernate, Off. Hibernate, Off. Hibernate, Off. * Intel Mobile Pentium or Mobile Pentium II processor. This chapter describes • Features and operation (below). • Specifications (page 1-9). • Internal design (page 1-12). 1-2 Product Information HP OmniBook 900,

Features and Operation

The following three illustrations point out the main external features of the computer. They are followed by highlights of the computer’s operation. For an internal, exploded view, see page 4-2. Latch Microphone Keyboard status lights Power button Pointing stick Touch pad AC adapter socket External module bay connector Click buttons (above and below PC Card slots the touch pad) PC Card eject buttons Figure 1-1. OmniBook - Front View PS/2 port System-off button Battery Infrared port Speaker Audio jacks Main status lights Hard disk drive Figure 1-2. OmniBook - Side View Kensington Serial Parallel Video USB Docking Kensington lock slot port port out port port lock slot Figure 1-3. OmniBook - Rear View HP OmniBook 900 Product Information 1-3,

Turning the OmniBook On and Off

• On. Press the blue power button to turn on the OmniBook. • Standby. The display turns off automatically if the computer is inactive for about 2 minutes. • Suspend. Click Start, Suspend (Windows 95) or press the blue power button briefly (about 1 second) to suspend activity when the OmniBook is on. When you turn on the computer, it resumes your previous work session. Closing the lid (for more than 2 seconds) also suspends the computer. • Hibernate. Press Fn+F12. This is like Off, except that your current work session is first saved to disk. When you turn on the computer, it reboots and restores your previous session. • Off. Click Start, Shut Down. If the OmniBook does not respond, press and hold the blue power button until the display shuts down. When you turn on the computer, it reboots. Unsaved data is lost. Table 1-3. Activating Power Modes Power Mode To Enter Mode To Turn Back On Standby Press Fn+S (not Windows 98) Press any key or move Reduced-power/stopped state. Display is off. –or– a pointing device to Everything is in a reduced-power state. Network allow time-out. display the current devices are maintained. Your current work session session ("Instant-On"). continues at turn-on (any key or pointer action). Suspend Press blue power button for Press blue power Low-power/stopped state. Lower power state than about 1 second button to display the Standby. Everything is off or in a low-power state. –or– current session Network devices are off. Your previous work session click Start, Shut Down, ("Instant-On"). resumes at turn-on. For plug-and-play operating Standby (Windows 98) systems, network connections resume at turn-on. –or– click Start, Suspend (Windows 95) –or– allow time-out. Hibernate Press Fn+F12 Press blue power No-power/stopped state. Session is saved on the –or– button to restart and hard disk. Everything is shut down. Computer allow time-out. restore the previous reboots at turn-on and restores previous session session. and network connections (if plug-and-play). Off Click Start, Shut Down Press blue power No-power/stopped state. Everything is shut down –or– button to restart with a (battery continues charging if ac adapter is Press and hold the blue power new session. connected). Computer reboots at turn-on and button until the display shuts restores network connections. down. 1-4 Product Information HP OmniBook 900,

Checking the Status of the OmniBook

The main OmniBook status lights, located at the front-right edge of the display bezel at the top of the display, indicate power status and drive activity. (These lights are on the motherboard.) Table 1-4. Main Status Lights (Motherboard) Meaning Power mode Steady green light: OmniBook is running (On mode). Steady orange light: OmniBook is suspended (Suspend or Standby mode). No light: OmniBook is off (Off or Hibernate mode). Green and orange lights: OmniBook failed when resuming, requires reset. Drive access Green light: OmniBook is accessing the hard disk drive or a drive in the external module bay. Charging Steady green light: AC adapter is connected, battery is full or stopped charging. Blinking green light: AC adapter is connected, battery is charging. No light: AC adapter is not connected or battery is not present. The keyboard status lights, located above the keyboard, indicate the states of the keyboard locks. (These lights are on the motherboard.) Table 1-5. Keyboard Status Lights (Motherboard) Meaning Caps Lock Caps Lock is active. Keypad Lock The embedded keypad is active (Fn+F8 or Fn held down). Num Lock must also be on for the numeric keys—otherwise, cursor control is active. Num Lock Num Lock is active. Keypad Lock must also be on to use the embedded keypad. Scroll Lock Scroll Lock is active. In addition, the battery module has five lights that indicate its charge level. To view the lights, you have to remove the battery and press the pad on the back next to the connector. The number of lights that turn on indicates the charge. HP OmniBook 900 Product Information 1-5,

Using Fn Hot Keys

The Fn key combined with another key is a hot key—a shortcut key sequence for various system controls. For an external keyboard, CTRL+ALT is normally equivalent to the Fn key. Table 1-6. Fn Hot Keys Hot Key Effect Fn + F1 Decreases the display’s brightness. Fn + F2 Increases the display’s brightness. Fn + F5 Switches among the built-in display, an external display, and simultaneous displays. Fn + F7 Toggles audio output on and off (mute). Fn + F8 Toggles the embedded keypad on and off. Does not affect an external keyboard. If Num Lock is on, then the numeric functions are active—otherwise, cursor control is active. Fn + F12 Enters Hibernate mode. Fn + R Enters Suspend mode. Fn + S Enters Standby mode (Windows 95, Windows NT) or Suspend mode (Windows 98). Fn + ScrLk Toggles Scroll Lock on and off. Fn + UP ARROW Increases and decreases the sound volume. Fn + DOWN ARROW

Resetting the OmniBook

1. Use a pen or a straightened paper clip to push the system-off button on the left side of the OmniBook. (The switch is on the motherboard.) –or– Press and hold the blue power button until the display shuts down. (The switch is on the motherboard.) 2. After the computer shuts down, press the blue power button to turn it back on. Note T he OmniBook can boot from a CD if all these conditions are true: • You have an OmniBook CD-ROM drive installed in the external module bay, • You have a bootable CD in the drive, such as the OmniBook Recovery CD, and • You select the CD-ROM drive as the boot device. You can do this during reboot by pressing ESC to cancel the OmniBook screen, then ESC to display the boot-device menu for a one- time selection. 1-6 Product Information HP OmniBook 900,

System Resources

The tables in this section show typical resource usage as set up by the OmniBook BIOS. Plug-and- play operating systems, drivers, and BIOS Setup settings may change some of the entries. To see other, non-default possibilities, use the BIOS Setup utility (see page 3-23), which lists port and audio device configurations in the System Devices menu. Table 1-7. System Interrupts 0 System timer 1 Keyboard 2 Cascade IRQ93Free (or COM2 infrared port, if enabled) 4 COM1 (serial port) 5 Audio 6 Floppy drive 7 Video controller 8 Real-time clock 9 Video controller 10 USB and CardBus - assigned by Windows driver 11 Free 12 Pointing device 13 Numeric data processor 14 Internal hard disk (primary IDE controller) 15 Internal CD-ROM drive (secondary IDE controller) Table 1-8. System Memory 00000 - 9FFFF System memory A0000 - BFFFF Video C0000 - CBFFF Video BIOS CC000 - DBFFF* Free** DC000*- FFFFF System BIOS * Approximate boundary. ** Valid uses for memory addresses CC000-DBFFF: Upper memory blocks (UMBs). PC card memory windows. HP OmniBook 900 Product Information 1-7, Table 1-9. System Input/Output Addresses (100-3FF) 120-127 Audio 170-177 Internal CD-ROM drive (secondary IDE controller) 1F0-1F7 Internal hard disk (primary IDE controller) 220-22F Audio 376 Internal CD-ROM drive (secondary IDE controller) 378-37F LPT1 (printer port) 388-38B Audio 3B0-3BB Video adapter 3C0-3DF Video adapter 3E0-3E1 PCMCIA controller 3F0-3F5 Floppy controller 3F6 Internal hard disk (primary IDE controller) 3F7 Floppy controller 3F8-3FF COM1 (serial port) Table 1-10. DMA Channels 0 Sound record 1 Sound playback 2 Floppy drive 3 LPT1 (ECP parallel port) 4 Cascade 5 Free 6 Free 7 Free 1-8 Product Information HP OmniBook 900,

Specifications

The following tables list descriptions for the OmniBook and its accessories. Table 1-11. OmniBook 900 Specifications Physical Attributes Notebook size: 11.8 x 8.8 x 1.26 in (30.0 x 22.5 x 3.2 cm). Notebook weight: 4 lb (1.8 kg). Processor and 366-MHz or 300(PE)-MHz Intel Mobile Pentium II processor. Bus Architecture 1.6-V core, 2.5-V external, low-power processor. 32-KB (16-KB instruction, 16-KB data) L1 cache. 256-KB four-way set-associative L2 cache. 32-bit PCI bus. Graphics 12.1-inch diagonal 800x600 SVGA TFT display (800x600x262K colors). 256-bit NeoMagic MagicGraph graphics accelerator with 2.5-MB video RAM. Zoomed Video support for lower PC Card slot. 1x AGP graphics capability. Power Rechargeable 6-cell lithium ion battery with LED charge-level gauge (10.8 Vdc, 3.0 AH, 33 watt-hours). Battery life: up to 2.5 hours (varies with type of usage). Fast battery recharge: 80% in 1 hour, 100% in 1.5 hours. Low-battery warning. Suspend/resume capability. 60-watt ac adapter: 100 to 240 Vac (50 to 60 Hz) input, 19 Vdc, 3.16 A output. Mass Storage 6.4-GB or 4.3-GB removable hard drive. 1.44-MB floppy drive module for use in external module bay. Optional modules for use in external module bay: 24X CD-ROM drive module. LS-120 SuperDisk drive module. 2X DVD drive module. RAM 32-MB RAM built in. One slot for RAM expansion up to 160 MB. Audio System 16-bit Sound Blaster Pro-compatible stereo sound. Built-in speaker. 3D-enhanced PCI bus audio with Zoomed Video support (lower slot). Built-in microphone. Line-in, headphone-out, and microphone-in. Keyboard and 87/88-key touch-type QWERTY keyboard with 101/102 key emulation. Pointing Device Embedded numeric keypad. 12 function (Fn) keys. Two pointing devices: pointing stick (TrackPoint technology licensed from IBM) and touch pad. Input/Output FDD/IDE interface for external module bay. Universal serial bus (USB). 9-pin, 115,200-bps serial (16550 UART). 25-pin bi-directional ECP/EPP parallel. Video-out (Resolution: up to 1280×1024×256 colors. Refresh rate: 60 to 85 Hz.) Dual display. PS/2 keyboard/mouse. 4-Mbps IrDA-compliant infrared port. Expandability One Type III or two Type II 16-/32-bit PC Card slots (3.3- and 5-V support). CardBus enabled. External plug-in module bay for accessory modules. Optional port replicator, mini dock, and docking system. HP OmniBook 900 Product Information 1-9, Software Microsoft Windows 95/Windows 98, or Windows NT 4.0. Windows 95/Windows 98-compatible Plug-and-Play. Windows NT 4.0 and PC Card Plug-and-Play. Advanced Power Management (APM). DMI with HP TopTools. Adobe Acrobat Reader. Agaté Tioman for HP (Hot Swap). DiagTools. McAfee VirusScan. Online Reference Guide. OmniBook Recovery CD included. Centralized worldwide BIOS and driver update service Security Features User and administrator passwords. System, hard drive, and docking passwords. PC identification displayed at boot. DMI-accessible electronic serial number. Kensington MicroSaver lock slot. Environmental Limits Operating temperature: 5 to 35 °C (41 to 95 °F). Operating humidity: 20 to 90 percent RH (5 to 35 °C). Storage temperature: –20 to 50 °C (–4 to 122 °F). Major ICs CPU: Intel Mobile Pentium II processor. South Bridge: PIIX4E. Video: NeoMagic MagicGraph NM2200 (NMG5). Audio: NeoMagic MagicGraph NM2200 (NMG5) and NeoMagic Audio NMA2. CardBus: TI PCI 1225. Keyboard controller: National PC87570. Super I/O: SMC 769. 1-10 Product Information HP OmniBook 900, Table 1-12. OmniBook 900 Accessories Accessory Description OmniBook Compatibility 900 4150 2100/7100 Memory F1456A 32-MB SDRAM expansion module • • • F1457A 64-MB SDRAM expansion module • • • F1622A 128-MB SDRAM expansion module • • • Hard Drives F1707A 6.4-GB internal hard disk drive • Modules F1465A DVD drive module (with DVD player card) • • F1470A LS-120 SuperDisk drive module • • F1472A Floppy drive module • • F1473A Floppy drive cable for external use • • F1474A 24X CD-ROM drive module • • F1704A External module bay • Power Options F1454A 60-watt ac adapter • • • F1455A 75-watt auto/airline power adapter • • • F1705A Lithium-ion battery • F1706A Battery charger (external) • 8120-6312 Replacement power cord (Australia) • • • 8120-6313 Replacement power cord (U.S., Canada, Taiwan) 8120-6314 Replacement power cord (Europe) 8120-6316 Replacement power cord (Japan) 8120-6317 Replacement power cord (India, South Africa) 8120-8367 Replacement power cord (Argentina) 8120-8373 Replacement power cord (People’s Republic of China) 8120-8452 Replacement power cord (Chile) 8120-8699 Replacement power cord (Hong Kong,Singapore,U.K.) Adapters F1469A PS/2 Y adapter • • • PC Cards F1623A 10/100-Mbps Ethernet + 56-Kbps modem PC Card by • • • Xircom F1625A 56-Kbps global modem PC Card by Xircom • • • F1626A 10/100-Mbps Ethernet PC Card by 3Com • • • F1627A 56-Kbps US modem PC Card by Xircom • • • TCM3C589 10-Mbps Ethernet PC Card by 3Com • • • Docks F1451A Port replicator (tray: page 4-6) • • • F1452A Mini dock (tray: page 4-6) • • • F1453A Monitor stand (short) for F1451A and F1452A • • • F1468A Docking module bay adapter • • F1477A Docking system and monitor stand (tall) (tray: page 4-6) • • • HP OmniBook 900 Product Information 1-11,

Internal Design

The motherboard PCA is the central component of the OmniBook design. It plays a role in virtually all system functions. The CPU module and most other subsystems connect to the motherboard. The following figure shows the connections among the replaceable electrical modules. As a substitute for a functional block diagram, see the table on page 1-13—it lists the roles that the replaceable modules play in each of the functional subsystems. LCD Module Top Case External (microphone) Touch Module Bay Pad

CPU

Module BIOS

IC

RAM PCMCIA PCMCIA Board Motherboard Socket Cards

PCA

Fan Speaker The power switch and lid Hard Disk Battery switch are contained on Drive the motherboard. All external connections are made to the Keyboard motherboard. (pointing stick) Figure 1-4. Replaceable Module Diagram 1-12 Product Information HP OmniBook 900, Table 1-13. Functional Structure Bootup CPU module Main processor. Motherboard Primary system circuitry. BIOS IC Code for basic system functions. Floppy disk module First source of disk-based startup code. Hard disk drive Second source of disk-based startup code. Processor CPU module Main processor, numeric data processor, L1 and L2 cache. Motherboard Primary system circuitry. Memory Motherboard First 32 MB of RAM, video RAM. RAM board Changeable RAM. Power Battery Power storage. Motherboard AC adapter socket, power switch, lid switch, system-off switch, power supply, power control circuitry. AC adapter AC-to-dc converter. Display Motherboard Display/graphics controller, PCMCIA/zoomed video controller, video RAM, power converter for backlight. LCD module Display output, backlight. Hard disk Motherboard Hard disk controller. Hard disk drive Hard disk mechanism. Floppy drive Motherboard Floppy disk controller. Floppy disk module Floppy disk mechanism. Keyboard Motherboard Keyboard controller. BIOS IC Keyboard BIOS. Keyboard Key switches. Pointer Motherboard Keyboard controller, pointing stick controller (PS/2 output). BIOS IC Keyboard BIOS. Keyboard Pointing stick sensor. Top case Touch pad sensor, controller (PS/2 output). Audio Motherboard Audio controller, audio decoder, speaker amplifier, headphone amplifier, zoomed video controller, external audio jacks, microphone. Speaker Speaker (mixed left and right channels). Status Motherboard Keyboard controller, main LEDs, keyboard LEDs. Serial Motherboard I/O controller, serial connector. Parallel Motherboard I/O controller, parallel connector. Infrared Motherboard I/O controller, infrared transmitter/receiver. PS/2 port Motherboard Keyboard controller, PS/2 processor, PS/2 connector. USB Motherboard Bus controller (South Bridge), USB connector. Docking port Motherboard Docking logic, docking connector. PCMCIA Motherboard PCMCIA controller. PCMCIA socket PCMCIA connectors. HP OmniBook 900 Product Information 1-13,

Removal and Replacement

This chapter tells you how to remove and replace the following components and assemblies. The ones marked by • are user-replaceable. Table 2-1. Removal Cross-Reference • Battery (page 2-3) • Foot (page 2-7) Bezel, display (page 2-24) Heatsink (table starting on page 2-25) • Bumper, display (page 2-7) Hinge, display (page 2-24) Cable, display flex (page 2-24) IC, BIOS (page 2-21) Cable, display power (page 2-24) Insulator, bottom case (table starting on • Cap, pointing stick (page 2-7) page 2-25) Case, bottom (page 2-18) Keyboard (page 2-10) Case, display (page 2-24) Latch, display (page 2-24) • Case, HDD kit (page 2-5) LCD module (page 2-8) Case, top (page 2-16) Lens, infrared (table starting on page 2-25) • Cover, display screw (page 2-7) Overlay, serial number (page 2-20) • Cover, hinge (page 2-7) Pads, thermal (table starting on page 2-25) • Cover, keyboard screw (page 2-7) PCA, motherboard (page 2-18) CPU module (page 2-12) Socket, PCMCIA (table starting on page 2-25) • Door, HDD (page 2-7) Speaker (table starting on page 2-25) Door, module bay connector (table starting on Support, hinge left (table starting on page 2-25) page 2-25) Support, hinge right (table starting on • Drive, hard disk (page 2-5) page 2-25) Fan (table starting on page 2-25) Support, touch-pad (page 2-25) Touch pad (page 2-25) C aution Always provide proper grounding when performing repairs. Without proper grounding, an electrostatic discharge may damage the OmniBook and its components. N otes R eassembly steps are the reverse of the removal steps. Reassembly notes are included at the end of each section below. S ymbols like this throughout this chapter show approximate full-size screw outlines. You can use them to verify the sizes of screws before you install them. Installing a wrong-size screw can damage the unit. (The symbol at the left represents an M2.5×5mm T-head screw.) HP OmniBook 900 Removal and Replacement 2-1, Table 2-2. Required Equipment • Small Phillips screwdriver (#1), preferably magnetized. • Fine Phillips screwdriver (#0). • 4-mm thin-wall hex driver (or 5/32 inch). • Small plastic blade for prying, such as an angled plastic tweezers. • Pointed knife or probe. • Small flat-blade screwdriver. • IC (PLCC) removal tool (similar to OK Industries EX-5). Table 2-3. Recommended Screw Torques Screw Thread Size Torque (kgf•cm) Torque (lbf•in) M1.4 0.9 – 1.2 0.8 – 1.0 M2 1.5 – 2.0 1.3 – 1.7 M2.5 (4–5 mm long) 3.0 – 3.5 2.6 – 3.0 except those in next line M2.5 (4–5 mm long) 2.0 – 2.5 1.7 – 2.2 for HDD case, PCMCIA socket M2.5 (8 mm long) 3.5 – 4.0 3.0 – 3.4 M3 4.0 – 4.5 3.4 – 3.9 except those in next line M3 2.0 – 2.5 1.7 – 2.2 for HDD case 2-2 Removal and Replacement HP OmniBook 900,

Removing the Battery

(User-Replaceable) Required Equipment • None. Removal Procedure 1. Unplug the ac adapter, if present. 2. Slide the battery’s front panel to the right. 3. Pull the battery out of the bay. Figure 2-1. Removing the Battery Reassembly Notes • Make sure the front panel of the battery is open before inserting the battery. HP OmniBook 900 Removal and Replacement 2-3,

Removing a RAM Board

(User-Replaceable) Table 2-4. RAM Board Replacement Part Numbers Description Part Number Exchange Part Number RAM board, 32-MB SDRAM 1818-7413 F1456-69001 RAM board, 64-MB SDRAM 1818-7414 F1457-69001 RAM board, 128-MB SDRAM 1818-7549 F1622-69001 Caution Handle the RAM board only by its edges and provide proper grounding. Otherwise, you may damage the board due to electrostatic discharge. Required Equipment • Small Phillips screwdriver. Removal Procedure 1. Unplug the ac adapter, if present, and remove the battery. 2. Put your finger above the F8 key and slide the keyboard-screw cover to the left about 3 mm (1/8 inch)—then lift off the cover. 3. Remove the two screws holding the keyboard above the F1 and HOME keys. If your screwdriver has a fat shaft, protect or remove the right hinge cover. 4. Lift up the keyboard tab above the F1 key about 10 mm (1/2 inch), then free the snap at the center of the back edge. 5. Slide the keyboard toward the display about 5 mm (1/4 inch), then fold the keyboard forward onto the front of the top case. W arning Do not touch the heatsink until it has cooled. It could be hot if the computer was running recently. 6. Release the two latches at the sides of the RAM board, so the free edge of the board pops up. 7. Pull the board out of the connector. 2-4 Removal and Replacement HP OmniBook 900, Keyboard-screw cover RAM board Screw, M2.5×4mm (2) Figure 2-2. Removing a RAM Board Reassembly Notes • Insert the RAM board into the connector at about a 30° angle until it is fully inserted. Then press down at both sides until both latches snap closed. • Fold the keyboard back into place. Slip its front tabs into the slots, then snap the back edge into place. • Push the keyboard toward the back as you tighten the two screws. This helps engage the tab at the back-center of the keyboard.

Removing the Hard Disk Drive

(User-Replaceable) E xchange Information W hen returning a bad hard disk drive to HP, describe the symptoms on a piece of paper and attach it to the part—do not use tape. Table 2-5. Hard Disk Drive Replacement Part Numbers Description Part Number Exchange Part Number Drive, hard disk (4.3GB, 9.5mm, IBM) * 0950-3409 F1711-69100 Drive, hard disk (6.4GB, 9.5mm, IBM) * 0950-4332 F1711-69101 * These hard drives are the preferred drives at the time of publication. Drives shipped in units are subject to change without notice. For current information about preferred and approved drives for these products, see the latest versions of service notes HDD4G-01 and HDD6G-01. Required Equipment • Small Phillips screwdriver. Removal Procedure 1. Unplug the ac adapter, if present, and remove the battery. 2. Turn the unit bottom side up and remove the hard drive screw from the bottom case. HP OmniBook 900 Removal and Replacement 2-5, 3. Open the hard drive door, then pull out the hard drive by its plastic tab. Screw, M2.5×5mm Figure 2-3. Removing the Hard Disk Drive 4. If you are installing a new hard drive that does not have a cover, you can remove the cover parts from the old hard drive: • Remove the two screws from the case, then lift the plastic tab and remove the plastic cover and metal shield from the hard disk drive. • Carefully pry the connector off the end of the hard disk drive. Work alternately at each end so that the connector slides off evenly. Screw, M3×4mm HDD cover kit Hard disk drive Figure 2-4. Installing a Hard Drive in the Cover Reassembly Notes Caution Do not cover the vent hole in the top surface of the hard drive or in the case. If you cover the hole, the hard drive could fail prematurely. • The small plastic tabs on the connector face the top of the drive, and the metal shield fits behind the tabs. 2-6 Removal and Replacement HP OmniBook 900, Important • If you are installing a new hard drive, create a Hibernate partition on the drive before loading any software—see the steps below. Creating a Hibernate Partition 1. Connect an external module bay and CD-ROM drive to the OmniBook. If you do not have an OmniBook CD-ROM module or external module bay, you must attach another type of CD-ROM drive, connect a floppy drive (in an external bay or with a parallel floppy cable), and create a Support Utility floppy disk. To create the disk, on any computer that has a CD-ROM drive, insert a formatted floppy disk in the floppy drive and run makesupp from the \Omnibook\Drivers\Hputils directory on the OmniBook 900 Recovery CD. See the readme file on the disk for additional instructions about setting up drivers for the CD-ROM drive. 2. Insert the Recovery CD in the CD-ROM drive. If the Support Utility disk is needed, insert it in the floppy drive. 3. Reboot the computer. If you are using an OmniBook CD-ROM drive, press ESC during reboot to cancel the OmniBook screen, ESC to display the boot-device menu, then select the CD-ROM drive as the boot device. 4. When prompted, select “Create Hibernate Partition.” We recommend that you create a partition the same as the default option.

Replacing Small Parts

(User-Replaceable) The following small parts are user-replaceable. Table 2-6. Replacing Small Parts (User-Replaceable) Part Replacement Procedure Bumper, display Insert a small flat-blade screwdriver under the bumper and pry it loose. To replace, (upper) firmly press the adhesive side of the bumper into the recess. Cap, pointing stick Pull the cap off the pointing stick. Cover, display screw Insert a small flat-blade screwdriver under the cover and pry it loose. To replace, (lower) firmly press the adhesive side of the cover into the recess. Cover, hinge Put your finger above the F8 key and slide the keyboard-screw cover to the left about 3 mm (1/8 inch)—then lift off the cover. Open the display fully. Push in at the bottom- front of the cover to unsnap it from the top case. Cover, keyboard Put your finger above the F8 key and slide the keyboard-screw cover to the left about screw 3 mm (1/8 inch)—then lift off the cover. Door, hard disk Open the door about 45° and flex the door until one side tab releases. Foot 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. HP OmniBook 900 Removal and Replacement 2-7,

Removing the LCD Module

(HP Authorized Service Providers Only) Exchange Information W hen returning a bad LCD module to HP, describe the symptoms on a piece of paper and attach it to the part—do not use tape. Required Equipment • Small Phillips screwdriver. • Small flat-blade screwdriver. • Pointed knife or probe. Removal Procedure 1. Unplug the ac adapter, if present, and remove the battery. 2. On the display bezel, remove the two upper bumpers and two lower screw covers (using a pointed knife or probe), then remove the four screws. 3. Along the top of the display, pull the bezel upward, toward the edge of the case, until the snaps release. 4. Starting at the top corners, repeat along the left and right sides, pulling outward to release the left and right edges. 5. Lift the top of the bezel away from the case about 7 cm (3 inches). The snaps along the bottom of the bezel should release. 6. At the top-right corner of the LCD module, unplug the LCD power wires from the power cable. 7. Remove the four screws holding the LCD module. 8. Lift up the right edge of the LCD module about 90°. 9. Using a small flat-blade screwdriver, insert the tip under the narrow end of the flex cable connector—not the wide end—and twist the screwdriver to release the connector from the LCD module. 2-8 Removal and Replacement HP OmniBook 900, Bumper (oval) Screw cover Screw, M3×6mm Screw, M3×4mm Bezel LCD module LCD flex cable Display case Power cable Figure 2-5. Removing the LCD Module Reassembly Notes • Make sure the LCD module and flex cable have small foam pads present to ensure good connections: Two pads on the back of the LCD module on the internal connections near the top-left and bottom-left corners. If a pad is missing, replace the LCD module. One pad on the LCD flex cable behind the connector that plugs into the LCD module. If the pad is missing, replace the flex cable. HP OmniBook 900 Removal and Replacement 2-9,

Removing the Keyboard

(HP Authorized Service Providers Only) Required Equipment • Small Phillips screwdriver. • Probe or tweezers. Removal Procedure 1. Unplug the ac adapter, if present, and remove the battery. 2. Put your finger above the F8 key and slide the keyboard-screw cover to the left about 3 mm (1/8 inch)—then lift off the cover. 3. Remove the two screws holding the keyboard above the F1 and HOME keys. If your screwdriver has a fat shaft, protect or remove the right hinge cover. 4. Lift up the keyboard tab above the F1 key about 10 mm (1/2 inch). If necessary, free the snap at the center of the back edge. 5. Slide the keyboard toward the display about 5 mm (1/4 inch), then fold the keyboard forward onto the front of the top case. Warning Do not touch the heatsink until it has cooled. It could be hot if the computer was running recently. 6. Release the pointing stick flex cable from the motherboard. 7. Release the keyboard flex cable from the motherboard, then remove the keyboard. 2-10 Removal and Replacement HP OmniBook 900, Keyboard-screw cover Screw, M2.5×4mm Keyboard Keyboard flex cable Pointing stick flex cable Figure 2-6. Removing the Keyboard Reassembly Notes • To connect the flex cables, lay the keyboard upside-down on the front section of the top case. • Fold the keyboard back into place. Slip its front tabs into the slots, then snap the back edge into place. • Push the keyboard toward the back as you tighten the two screws. This helps engage the tab at the back-center of the keyboard. HP OmniBook 900 Removal and Replacement 2-11,

Removing the CPU Module

(HP Authorized Service Providers Only) Required Equipment • Small Phillips screwdriver. • Small plastic blade for prying, such as an angled plastic tweezers. Removal Procedure Warning Do not touch the heatsink until it has cooled. It could be hot if the computer was running recently. 1. Unplug the ac adapter, if present, and remove the battery. 2. Remove the keyboard (page 2-10)—but you don’t have to release the flex cables. 3. Remove the eight screws from the heatsink and lift off the heatsink. Caution Do not spin the fan blade with your finger. Pressure on the fan blade can damage the bearings. CautionInthe next step, follow these precautions to prevent damage to the CPU connectors: • Use only a non-metallic tool for releasing the CPU module. A metal tool may damage the motherboard. • To release the CPU module, insert the non-metallic blade under the CPU module and twist it against the motherboard. Non-metallic tool. Pry up at these two places. • Do not raise the front end or the CPU module higher than the back end during removal. T o reinstall the CPU assembly, see the precautions under “Reassembly Notes.” 4. At the side of the CPU module near the back-right corner, pry up the corner of the CPU module about 1-2 mm. Then pry up the back-left corner. Lift off the CPU module. 2-12 Removal and Replacement HP OmniBook 900, Screw, M2×5mm (8) Heatsink CPU module Note: Do not put screws in these two holes. CPU connector Figure 2-7. Removing the CPU Module Reassembly Notes

Caution

Follow these precautions while installing the CPU module to prevent damage to the CPU connectors: • Place the CPU module on the connector carefully. Use the screw holes as a guide. • Place your fingers on top of the CPU module above the left and right ends of the connector. Do not push at other locations. • Press firmly at the left end while holding down the right—until the left engages. Then press down the right down while holding the left. • Press firmly until the CPU module seats in the connector—you should feel a slight click. Install or replace thermal pads on the heatsink that are missing or damaged. Do not install screws in the middle area of the heatsink. The only screws in the CPU area are at the four corners of the CPU module. HP OmniBook 900 Removal and Replacement 2-13,

Removing the Display Assembly

(HP Authorized Service Providers Only) Required Equipment • Small Phillips screwdriver. Removal Procedure 1. Unplug the ac adapter, if present, and remove the battery. 2. Remove the keyboard (page 2-10). 3. Open the display fully and remove the covers from the display hinges. Push in at the bottom-front of the covers. 4. Unplug the display power wires from the motherboard near the right hinge. Free the wires from the notch in the top case. 5. Remove the two screws from the end of the LCD flex cable and unplug the cable from the motherboard. 6. Close the display and turn over the computer. 7. Remove the two screws from the back corners of the bottom case. 8. Open the display about 90°, then lift if off. 2-14 Removal and Replacement HP OmniBook 900, Hinge covers (2) Display power cable Screw, M2.5×4mm Display flex cable Screw, M2.5×8mm Figure 2-8. Removing the Display Assembly Reassembly Notes • The flex cable wraps around the post only about 1/2 turn. • Insert the display power wires into the notch in the top case before installing the hinge cover. HP OmniBook 900 Removal and Replacement 2-15,

Removing the Top Case

(HP Authorized Service Providers Only) Required Equipment • Small Phillips screwdriver. Removal Procedure 1. Unplug the ac adapter, if present, and remove the battery. 2. Remove these additional assemblies: • Hard disk drive (page 2-5) • Keyboard (page 2-10). • Display assembly (page 2-14). 3. Remove the eight screws from the heatsink and lift off the heatsink. (M2x5) Caution Do not spin the fan blade with your finger. Pressure on the fan blade can damage the bearings. 4. Unplug the microphone cable from the motherboard near the back. 5. Unplug the touch pad flex cable from the motherboard near the front. 6. On the bottom of the unit, remove the five screws from the front half of the case. 7. On the top of the unit, remove the three screws along the back of the top case. 8. Remove the six screws holding the top case to the motherboard and bottom case. 9. Near the docking connector, press down on the inner edge of the top case and lift the back edge until two snaps release in that area. 10. Near the right hinge area, push the top case toward the rear and lift the back edge until the top case releases from the right hinge support. 11. Hold the front of the bottom case with your thumbs. Lift the back of the top case about 5 mm (2 inches), then pull it forward with your fingers. Pull and work the top case until the middle snap releases. The left hinge support comes off with the top case. The right hinge support stays in the bottom case. 2-16 Removal and Replacement HP OmniBook 900, Screw, M2×5mm (8) Heatsink Note: Do not put screws in these two holes. Screw, M2.5×8mm Screw, M2.5×5mm Microphone cable Touch pad cable Top case Screw, M2.5×8mm Screw, M2.5×5mm Figure 2-9. Removing the Top Case Reassembly Notes N ote: Installing a New Top Case • Transfer the following items from the old top case to the new one: Touch pad and support. Left hinge support. • Press down on the support plate while sliding it into place. Make sure the support is held down at its left and right edges. Check the action of the click buttons before installing the top case. • Engage the tab at the front of the top case, then lower the it onto the bottom case. • It may be easier to plug in the touch pad flex cable while you are lowering the top case onto the bottom case—rather than waiting until after the top case is fully installed. HP OmniBook 900 Removal and Replacement 2-17,

Removing the Motherboard or Bottom Case

(HP Authorized Service Providers Only) Exchange Information W hen returning a bad motherboard to HP, describe the symptoms on a piece of paper and attach it to the part—do not use tape. Required Equipment • Small Phillips screwdriver. • 4-mm thin-wall hex driver (or 5/32 inch). If necessary, grind the sides of a standard driver. Removal Procedure 1. Unplug the ac adapter, if present, and remove the battery. 2. Remove these additional assemblies: • Hard disk drive (page 2-5). • Keyboard (page 2-10). • Display assembly (page 2-14). • CPU module (page 2-12). • Top case (page 2-16). 3. Remove the screw holding the right hinge support near the back-right corner, then lift out the support. 4. Remove the screw holding the front-left corner of the motherboard. 5. Unplug the speaker wire from the front of the motherboard. 6. Unplug the fan wire from the left side of the motherboard. 7. Remove the two screws from the PCMCIA socket. 8. Unplug the PCMCIA socket flex cable from the motherboard and lift out the socket. 9. Remove the four hex standoffs in the CPU area. 10. Lift the front of the motherboard about 7 cm (3 inches), then slide the motherboard forward until it comes out of the bottom case. 2-18 Removal and Replacement HP OmniBook 900, Screw, M2.5×4mm Standoff, M2×9mm PCMCIA socket Motherboard Screw, M2.5×8mm Right hinge support Screw, M2.5×4mm Bottom case Speaker cable Fan cable Figure 2-10. Removing the Motherboard Reassembly Notes N ote: Installing a New Motherboard • If a RAM board is present, transfer it from the old motherboard to the new one: • Reprogram the BIOS IC—see the note below. • Store the serial number electronically in the new motherboard—see the steps below. Note: Installing a New Bottom Case • Transfer these parts from the old bottom case to the new one: H DD door and infrared lens. Module bay door. (If the door does not stick to the case, the motherboard will hold it.) Speaker. (If the covering is not reusable, install a new speaker.) Fan. (Do not press or spin the fan blade with your finger.) Mylar insulator (inside the bottom case). • Install the original serial number label and a new overlay—see the steps below if you have to make a new serial number label. HP OmniBook 900 Removal and Replacement 2-19, • When lowering the motherboard into the bottom case, make sure the audio jack grounding tabs do not catch on the bottom case. • Make sure the speaker and fan wires are not trapped under the motherboard. NoteIfyou installed a new motherboard with a new BIOS IC, the IC contains only enough basic programming to boot the OmniBook. After installing the motherboard, you must reprogram the IC. Hewlett-Packard prefers that you program the IC with the latest BIOS. You can download it from the OmniBook website (see page vi)—follow the directions provided. Storing the Serial Number Electronically 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 \Omnibook\Drivers\Hputils directory and type esn at the prompt. Otherwise, copy \Omnibook\Drivers\Hputils\Esn.exe from the OmniBook 900 Recovery CD, then run it on the OmniBook. 3. Store the serial number: 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. Installing a New Serial Number Label If you do not have a master file that creates serial number labels, get a copy from the Reseller website (see page vi) under Product Support Information in the Service and Support Library. 1. Using any PC connected to a laser printer, open the master serial label file, enter the serial number and product number from the old serial label, and print the new label on plain white paper. The new label does not have barcodes. 2. 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. 3. While holding the paper label in place, attach a serial label overlay into the outer recess. It covers and protects the serial label. 2-20 Removal and Replacement HP OmniBook 900,

Removing the BIOS IC

(HP Authorized Service Providers Only) Note A replacement BIOS IC contains only enough basic programming to boot the OmniBook. After installing the IC, you must reprogram it. Hewlett-Packard prefers that you program the IC with the latest BIOS. You can download it from the OmniBook website (see page vi)—follow the directions provided. Required Equipment • Small Phillips screwdriver. • IC (PLCC) removal tool (similar to OK Industries EX-5). Removal Procedure Caution R emove all power before removing or installing the BIOS IC. Otherwise, the IC could be damaged. 1. Unplug the ac adapter, if present, and remove the battery. 2. Put your finger above the F8 key and slide the keyboard-screw cover to the left about 3 mm (1/8 inch)—then lift off the cover. 3. Remove the two screws holding the keyboard above the F1 and HOME keys. If your screwdriver has a fat shaft, protect or remove the right hinge cover. 4. Lift up the keyboard tab above the F1 key about 10 mm (1/2 inch), then free the snap at the center of the back edge. 5. Slide the keyboard toward the display about 5 mm (1/4 inch), then fold the keyboard forward onto the front of the top case. W arningDonot touch the heatsink until it has cooled. It could be hot if the computer was running recently. 6. Use an IC removal tool to remove the BIOS IC from its socket. HP OmniBook 900 Removal and Replacement 2-21, IC removal tool Figure 2-11. Removing the BIOS IC Reassembly Notes

C aution

• Align the IC with the slot in the socket. The IC is keyed to fit correctly. If you insert the IC backward, the IC or motherboard could be damaged. • Press down firmly on the IC with your thumb to ensure a proper connection. • Fold the keyboard back into place. Slip its front tabs into the slots, then snap the back edge into place. • Push the keyboard toward the back as you tighten the two screws. This helps engage the tab at the back-center of the keyboard. • Reprogram the IC by programming the BIOS—see the note above. 2-22 Removal and Replacement HP OmniBook 900,

Removing Other Components

(HP Authorized Service Providers Only) Required Equipment • Small Phillips screwdriver. • Pointed knife or probe (for display components). • Small flat-blade screwdriver (for display components). • Fine Phillips screwdriver (for display latch only). • 4-mm thin-wall hex driver (or 5/32 inch) (for bottom case components). • Small plastic blade for prying, such as an angled plastic tweezers (for bottom case components). Removal Procedure 1. Unplug the ac adapter, if present, and remove the battery. 2. Remove the additional assemblies and follow the special steps indicated in the tables below. Components are separated into these groups: • Display components (page 2-24). • Top case components (page 2-25). • Bottom case components (page 2-25). HP OmniBook 900 Removal and Replacement 2-23, Table 2-7. Removing Display Components Component Removal Procedures Additional Steps (See figure on page 4-5) Bezel, display Remove the display bezel (see page 2-8). Cable, display flex Keyboard (page 2-10). 1. Unsnap the flex cable tube from the display case. Display (page 2-14). 2. Remove the screw holding the left hinge arm and LCD module (page 2-8). release the flex cable grounding strap. Reassembly Notes: The grounding strap goes between the left hinge arm and the display case. It is held by the hinge screw. The flex cable wraps around the tube only about 1/2 turn. Cable, display power Keyboard (page 2-10). 1. Remove the two hinge covers. 2. Remove the display bezel (see page 2-8). 3. Unplug the power cable from the LCD module wires. 4. Unplug the power cable from the motherboard. Reassembly Notes: Insert the display power cable into the notch in the top case before installing the hinge cover. Case, display Keyboard (page 2-10). 1. Remove the screws holding the hinge arms, then lift Display (page 2-14). out the hinges. LCD module (page 2-8). 2. Unsnap the flex cable tube from the display case. Lift out the flex cable. 3. Remove the two screws holding the display latch, then lift out the latch. Reassembly Notes: Install the display latch and other components into the new display case. Hinge Keyboard (page 2-10). 1. Remove the display bezel (see page 2-8). Display (page 2-14). 2. Remove the screw holding the hinge arm, then lift out the hinge. Reassembly Notes: Insert the hinge fully into the case before installing the screw. Latch, display 1. Remove the display bezel (see page 2-8). 2. Remove the two screws holding the latch, then lift out the latch. LCD module See page 2-8. 2-24 Removal and Replacement HP OmniBook 900, Table 2-8. Removing Top Case Components Component Removal Procedures Additional Steps (See figure on page 4-2) Case, top See page 2-16. Keyboard See page 2-10. Support, touch-pad Hard drive (page 2-5). 1. Remove the screw holding the support plate to the Keyboard (page 2-10). top case. Display (page 2-14). 2. Slide the support plate to the side and lift it out. Top case (page 2-16). Reassembly Notes: Make sure the touch pad is seated properly before installing the support plate. Press down on the support plate while sliding it into place. Make sure it is held down at the left and right edges. Check the action of the click buttons before installing the top case. Touch pad Hard drive (page 2-5). 1. Remove the screw holding the support plate to the Keyboard (page 2-10). top case. Display (page 2-14). 2. Slide the support plate to the side and lift it out. Top case (page 2-16). 3. Lift out the touch pad and its flex cable. Reassembly Notes: Make sure the touch pad is seated properly before installing the support plate. Press down on the support plate while sliding it into place. Make sure it is held down at the left and right edges. Check the action of the click buttons before installing the top case. Table 2-9. Removing Bottom Case Components Component Removal Procedures Additional Steps (See figure on page 4-2) Case, bottom See page 2-18. CPU module See page 2-12. Door, module bay Hard drive (page 2-5). Peel the rubber door from the bottom case. connector Keyboard (page 2-10). Reassembly Notes: Position the new door in the Display (page 2-14). center of the opening before sticking it onto the bottom CPU (page 2-12). case. Top case (page 2-16). Motherboard (page 2-18). Fan Keyboard (page 2-10). Caution: Do not spin the fan blade with your finger. Pressure on the fan blade can damage the bearings. 1. Remove the eight screws from the heatsink and lift off the heatsink. 2. Remove the two screws holding the fan. 3. Unplug the fan cable from the motherboard and lift out the fan. Reassembly Notes: The opening in the side of the fan faces the vent in the bottom case. Heatsink Keyboard (page 2-10). Remove the eight screws from the heatsink and lift off the heatsink. Reassembly Notes: Install or replace thermal pads on the heatsink that are missing or damaged. IC, BIOS See page 2-20. HP OmniBook 900 Removal and Replacement 2-25, Component Removal Procedures Additional Steps (See figure on page 4-2) Insulator, bottom case Hard drive (page 2-5). Lift the sheet out of the bottom case. Keyboard (page 2-10). Reassembly Notes: The small pads on the sheet face Display (page 2-14). upwards. CPU (page 2-12). Top case (page 2-16). Motherboard (page 2-18). Lens, infrared Hard drive (page 2-5). Slide the infrared lens out of the bottom case. Keyboard (page 2-10). Display (page 2-14). Top case (page 2-16). Pads, thermal Keyboard (page 2-10). 1. Remove the eight screws from the heatsink and lift off the heatsink. 2. Install or replace damaged or missing thermal pads on the bottom of the heatsink. 3. Clean off the mating surfaces of the CPU module and the large IC next to it. Reassembly Notes: Install the smaller pad in the recessed area of the same shape. Install the larger pad in the middle of the protruding area. PCA, motherboard See page 2-18. Socket, PCMCIA Keyboard (page 2-10). 1. Remove the eight screws from the heatsink and lift off the heatsink. 2. Remove the two screws from the right side of the PCMCIA socket. 3. Unplug the PCMCIA socket flex cable from the motherboard and slide out the socket. Speaker Hard drive (page 2-5). 1. Unplug the speaker from the motherboard. Keyboard (page 2-10). 2. Peel off the covering from the speaker chamber. Display (page 2-14). 3. Pull the speaker out of the bottom case. Top case (page 2-16). Reassembly Notes: Make sure the foam pads are attached to the edges and back of the speaker. After inserting the speaker, carefully seal the speaker chamber with the new covering material. Support, hinge (left) Hard drive (page 2-5). Unsnap the left hinge support from the top case. Keyboard (page 2-10). Display (page 2-14). Top case (page 2-16). Support, hinge (right) Hard drive (page 2-5). Remove the screw holding the right hinge support near Keyboard (page 2-10). the back-right corner, then lift out the support. Display (page 2-14). Top case (page 2-16). 2-26 Removal and Replacement HP OmniBook 900,

Troubleshooting and Diagnostics This chapter includes troubleshooting and diagnostic information for testing the functionality of the OmniBook and identifying faulty modules:

• Troubleshooting information Troubleshooting the problem (page 3-2). Verifying the repair (page 3-3). Suggestions for troubleshooting (page 3-4). • Diagnostic tools OmniBook hardware diagnostic program (page 3-12). Power-on self-test (page 3-17). Sycard PCCtest 450 PC Card (page 3-20). Desktop Management Interface (page 3-21). BIOS Setup utility (page 3-23).

C aution

D o not unnecessarily remove the CPU module from the motherboard. The CPU connector is easily damaged during removal and insertion. HP OmniBook 900 Troubleshooting and Diagnostics 3-1,

Troubleshooting

The suggestions in this section can help isolate and repair the cause of a problem. To ensure quality repair, HP recommends that you follow the basic troubleshooting steps shown in the illustration below. Check the customer’s description of the problem and any supporting information. Try to duplicate the customer’s Isolate software problems problem. (Also see the suggestions - Check whether the problem at the right.) occurs with the factory software configuration—install a hard disk with factory software. This may identify software Troubleshoot the problem using configuration and compatibility - Diagnostic tools. problems. - Troubleshooting suggestions. - Check whether the problem occurs only when connected to the internet. This may identify Verify the repair by testing the ISP, software, and traffic functionality of the complete unit. problems. Figure 3-1. Basic Troubleshooting Steps

Troubleshooting the Problem

Record pertinent information about the unit: Model and serial number. Operating system and version. BIOS version. Accessories and peripherals used. Analyze the problem: • Observe Symptoms. Using the customer’s information, try to duplicate the problem. Determine how the problem differs from proper behavior. Also, take note of the functions that do work properly. • Separate Problems. If there is more than one symptom, separate them into distinct problems. 3-2 Troubleshooting and Diagnostics HP OmniBook 900, • Consider Causes. Keep in mind possible causes for each problem. Use the diagnostic tools and troubleshooting suggestions to help find possible causes. The OmniBook diagnostic program is the primary hardware troubleshooting tool—it tests most components using automatic and interactive tests. The table on page 3-4 shows how you can use the different diagnostic tools to isolate the cause. The troubleshooting suggestions on page 3-5 include general suggestions for repairing units with certain failure symptoms. Swapping easily replaced modules with known-good modules is an ideal way to isolate the cause down to the module level. It is rare for more than one module to be responsible for one failure symptom. Therefore, replacement of more than one module for a particular symptom should be the exception rather than the normal expectation. After replacing a module, it is normal for the unit to be in a confused state and lock up when power is applied. If this occurs, press the system-off button to restart the computer in a known state.

Verifying the Repair

Before returning the repaired unit to the customer, verify the repair by running the following tests: • Basic Diagnostic Test. Run the basic test of the OmniBook diagnostic program (page 3-12). –and– • Function Tests. Run tests that check the repaired function, such as in the OmniBook diagnostic program (page 3-12). –and– • Failed Tests. Run any other tests that failed during troubleshooting. HP OmniBook 900 Troubleshooting and Diagnostics 3-3,

Suggestions for Troubleshooting

Table 3-1. Scope of Diagnostic Tools Function OmniBook Power-On Sycard DMI/TopTools BIOS Setup Diagnostics Self-Test PCCtest 450 (if installed) Bootup Tests Describes Configures (SafeTools) Processor Tests Tests Describes (System menu) (AssetTools) Memory Tests Tests Describes Describes (Memory menu) (AssetTools) Batteries Describes (AssetTools) Display Tests (Video, Describes Mem,User menus) (AssetTools) Hard disk Tests Tests Describes Configures (IDE menu) (AssetTools) Floppy drive Tests Tests Describes Describes (FDD menu) (AssetTools) Keyboard Tests Tests Describes (KBD menu) (AssetTools) Pointer Tests Describes Configures (Misc menu) (AssetTools) Audio Tests (System, Configures Misc menus) Serial Tests* Describes Configures (Misc menu) (AssetTools) Parallel Tests* Describes Configures (Misc menu) (AssetTools) Infrared Tests† Describes Configures (Misc menu) (AssetTools) PS/2 port Tests† (KBD, Misc menus) USB Tests† Describes (System menu) (AssetTools) Docking port Tests (using docks) PCMCIA Tests Tests Describes (Misc menu) (AssetTools) AC adapter Status (AssetTools) Docking Tests ports and Status Configures products internal bus (AssetTools) CD-ROM Tests Tests (with boot Describes Configures drive (IDE menu) CD) (AssetTools) Other plug-in Describes modules (AssetTools) * The diagnostic test is more thorough if you use a loopback connector. † Use an appropriate external device to exercise the port. See the help text for the tests in the menu. 3-4 Troubleshooting and Diagnostics HP OmniBook 900, If you can’t isolate the cause of a problem using the diagnostic tools, you can use the suggestions in the following table to help find the problem. Table 3-2. Troubleshooting Suggestions Symptom Call Center: Repair Center: Repair Center: Suggestions Likely Causes Comments To help determine likely causes, check to see what replaceable modules are involved in the system function and what roles they play. See the table on page 1-13. Startup Does not boot on Check the power source. AC adapter. Check ac adapter. Remove ac or battery Push system-off button. RAM board. any RAM boards and retry. Unplug the ac adapter and CPU module. If power status light does not remove battery, then Motherboard. turn on, reprogram or replace reconnect power. BIOS IC, replaceBIOS IC. Remove any RAM board and motherboard.LCD module. try again. Reinsert and try If power status light turns on again. Hard drive. but display remains off, try external monitor. If monitor shows successful boot, replace LCD module. If monitor shows activity but BIOS does not complete, replace CPU module. If monitor is blank, replace CPU module, replace motherboard. If power status light and display turn on, 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, reload hard drive, replace hard drive. Does not boot on Check battery level on Battery or contacts. battery (boots on battery LEDs. Motherboard. ac) Check battery contacts. If available, try another battery. Does not boot from Check floppy drive contacts. Floppy drive or floppy drive Try reseating the external contacts. module bay cable and the Accessory floppy module into the bay. cable. Try using alternate External module bay. connection (with accessory Motherboard. floppy cable or external module bay). Check boot order in BIOS Setup. Check that floppy boot is enabled in BIOS Setup. Error message Check for a disk in floppy Hard drive contacts. If unit boots from floppy drive, such as “Invalid drive. Hard drive. check for corrupt files on system disk” or Remove and reinsert hard hard drive, reload hard drive, “Auto IDE error” drive. replace hard drive. Check boot order in BIOS Setup. HP OmniBook 900 Troubleshooting and Diagnostics 3-5, Symptom Call Center: Repair Center: Repair Center: Suggestions Likely Causes Comments Sluggish startup or Run ScanDisk and Disk Use same suggestions shutdown Defragmenter to check and shown at left. optimize the hard drive. Delete temporary and unneeded files. Password has been Verify proper ownership, then The user must call Technical forgotten follow the removal procedure Support and provide proof of with the owner and log the ownership. Password appropriate data—see page removal is restricted to 5-1. certain sites. See page 5-1. Power/Battery Short battery Turn down display Battery. Battery capacity often operating time brightness. Motherboard. decreases after a year or Check power management more. settings in BIOS Setup. Try the default settings. Shut down and restart. During boot at the F2 prompt, press F6. This starts a process that recalibrates the battery gauge, possibly improving operating time. Inform user that certain applications can cause excess power usage. (User can get power monitor from www.intel.com and monitor CPU load.) Some PC cards (PCMCIA) draw power even while not in use. Heavy modem use can affect battery operating time. Does not run on Check battery contacts. If Battery or contacts. battery, empty available, try another battery. Motherboard. battery indication Battery does not Check the power source. Battery or contacts. Check ac adapter. charge Check battery contacts. If AC adapter. Check fan. available, try another battery Motherboard. and ac adapter. Fan. Check for high ambient temperature and blocked air holes on the side and bottom. Do not charge in a small space or on a soft surface. Battery indicator is Completely charge and Battery. Try cycling the battery inaccurate discharge the battery 2 to 4 Motherboard. charge. Press F6 during boot cycles in the unit. to cycle the battery charge. Display Dark display, no Adjust display brightness. LCD module If an external monitor light Press Fn+F5 several times. (backlight). displays no image, replace Try external monitor. LCD flex cable, power the motherboard. Check for very low ambient cable, or temperature. connections. Motherboard. 3-6 Troubleshooting and Diagnostics HP OmniBook 900, Symptom Call Center: Repair Center: Repair Center: Suggestions Likely Causes Comments White display Adjust display brightness. LCD module. Motherboard. Erratic display LCD flex cable or Make sure the LCD module connections. and flex cable have small LCD module. foam pads attached—see page 2-8. Bright or missing See quality statement on LCD module. See quality statement on pixels or lines page 5-2. LCD flex cable or page 5-2. connections. Hard disk Hard disk never Check the power source. Hard drive or spins Remove and reinsert the contacts. hard drive. Check the Motherboard. contacts. Hard disk makes Back up the drive Hard drive. Check the computer and clunking or immediately. drive for evidence of scratching noise Was the computer or drive customer abuse. dropped? Hard disk makes Back up the drive Depends on the buzzing or whining immediately. source of the noise. noise Check for alternate noise sources, such as a PCMCIA drive or fan. If a keystroke causes the sound to change, it may be power supply noise. Files are corrupted Run a virus scan program. Use same suggestions Check the disk surface by shown at left. running Scandisk (Windows 95/98) or Disk Administrator (Windows NT). Or boot to DOS and run CHKDSK to look for problems, run CHKDSK /f to fix. Use Recovery CD to restore original factory software. Drive capacity is Check the disk surface by Hard drive. Use same suggestions less than normal running Scandisk (Windows shown at left. 95/98) or Disk Administrator Recreate the Hibernate (Windows NT). partition (see page 2-7), then Check partitions using FDISK partition and format the disk. (Windows 95/98) or Disk Administrator (Windows NT). Floppy drive General problems Check floppy drive contacts. Floppy drive or Try reseating the external contacts. module bay cable and the Accessory floppy module into the bay. cable. Try using alternate External module bay. connection (with accessory Motherboard. floppy cable or external module bay). Check settings in BIOS Setup. HP OmniBook 900 Troubleshooting and Diagnostics 3-7, Symptom Call Center: Repair Center: Repair Center: Suggestions Likely Causes Comments Keyboard Some or all keys do Keyboard. Try reinserting the flex cable not work properly Motherboard. in the connector on the BIOS IC. motherboard. PS/2 keyboard and Check devices separately. Y-adapter. mouse with Y- PS/2 device. adapter do not work Motherboard. Pointing stick General problems Check settings in Control Keyboard assembly. Try reinserting the flex cable Panel. Motherboard. in the connector on the Check that the pointing stick motherboard. is enabled in BIOS Setup. Special TrackPoint If installed, remove Keyboard assembly. driver features not TouchPad driver support Motherboard. working using Add/Remove Program. In Mouse Properties, select the IBM TrackPoint driver from the track-point directory under \OmniBook\Drivers. Click button doesn’t Touch pad. work Top case. Motherboard. Touch pad General problems Check settings in Control Touch pad (or top Panel. case). Check pointing stick settings Motherboard. in Control Panel. The IBM TrackPoint driver can redefine touch pad operation. Check that the touch pad is enabled in BIOS Setup. Special TouchPad If installed, remove IBM Touch pad (or top driver features not TrackPoint support using case). working Add/Remove Program, then Motherboard. in Mouse Properties, select the standard PS/2 mouse. Disable the pointing stick in BIOS Setup, enable the touch pad. Run Setup.exe from the touch-pad subdirectory under \Omnibook\Drivers. Click button doesn’t Touch pad. work Top case. Motherboard. 3-8 Troubleshooting and Diagnostics HP OmniBook 900, Symptom Call Center: Repair Center: Repair Center: Suggestions Likely Causes Comments Audio Sound does not Check settings in BIOS Speaker. Check operation using play Setup. Motherboard. headphones or external Increase sound volume speakers. (Fn+UP and software controls). Check whether mute is active (Fn+F7 and software controls). Check for sound resource conflicts in Device Manager (Windows 95/98) or Administrative Tools or Control Panel System (Windows NT). Sound does not Check settings in BIOS Top case Check operation using record Setup. (microphone). external microphone. Check software controls for Motherboard. microphone—it should not be muted in recording panel. Note: The microphone should normally be muted in the master output panel. Serial/Parallel General problems Check settings in BIOS Motherboard. Use loopback connector Setup. during test—see page 3-14. Check settings in Control Panel (and in Windows NT Diagnostics). Infrared General problems Infrared communication is Motherboard. not supported in Windows NT 4.0. Infrared is disabled when shipped. Drivers are included but not installed when shipped. Check settings in BIOS Setup. Standard IrDA and fast-IrDA are incompatible (they use different drivers). For fast-IrDA, check for DMA conflict with ECP parallel port.

USB

General problems USB is not supported in Motherboard. Windows NT 4.0. HP OmniBook 900 Troubleshooting and Diagnostics 3-9, Symptom Call Center: Repair Center: Repair Center: Suggestions Likely Causes Comments

PCMCIA

General problems Make sure Card Executive is Motherboard. Using a flashlight, look for installed for Windows NT. PCMCIA socket. bent pins inside the PCMCIA If the card requires an IRQ, socket. check that there is one If both slots have problems, available. replace the motherboard. If Check for conflicts or refresh only one slot has a problem, the device list in Device try replacing the PCMCIA Manager (Windows 95) or socket. Administrative Tools or Control Panel System (Windows NT). Reboot the computer. Try the card in the other slot or in another computer. Check the OmniBook website for installation instructions (page vi). Download current drivers from the card manufacturer’s website. AC adapter Does not power the Try another ac adapter, if AC adapter. The ac adapter is not OmniBook available. Motherboard. repairable—it must be replaced. Miscellaneous Clock loses time Plug in ac adapter for 24 Motherboard. Charge backup battery. hours to charge backup battery. Computer gets hot It is normal for the computer Fan. Check the fan. (Do not press to get hot. Thermal connections. or spin the blade with your Make sure the air holes in the Heatsink damage. finger.) side and bottom are clear. Check for proper contact Make sure computer is not between heatsink, thermal resting on a soft surface. pads, CPU, and Northbridge DOS games and other IC. programs that drive CPU usage toward 100% can contribute. 3-10 Troubleshooting and Diagnostics HP OmniBook 900, Symptom Call Center: Repair Center: Repair Center: Suggestions Likely Causes Comments Computer pauses May be normal Windows CPU module. If computer slows after a or runs sluggishly behavior (background Motherboard. period of continuous activity, processing can affect Thermal connections. check thermal connections response time). and parts—see the previous If the hard disk has spun symptom. down to conserve power, it can take several seconds to spin up. You can hear this. You can run BIOS Setup and change the hard disk time- out to match the Suspend time-out. Certain background operations (such as HP COE virus scans) can affect performance while they’re running. Some file browsers may be unresponsive while they’re processing a graphic image or waiting for broken network connections to time out. Check for overheating—see the previous symptom. Run BIOS Setup and try turning off smart CPU mode. Accessories Docking product I/O Check that ac power is Docking product. Test the corresponding problems connected. Motherboard. OmniBook ports while Check settings in BIOS undocked. Setup. The port replicator and mini Try using the corresponding dock are not repairable—they OmniBook port. must be exchanged. The docking system is repairable—see its service manual. Can not boot from Check that the CD is CD-ROM drive. The CD-ROM drive is not CD in CD-ROM bootable. External module bay. repairable—it must be drive During boot, do not press exchanged. ESC before the F2 prompt— or check boot order in BIOS Setup. General plug-in Check contacts on the Plug-in module or Plug-in modules are not module problems module, in external bay, on contacts. repairable—they must be cable, and on OmniBook External module bay. exchanged. connector. Motherboard. Push system-off button and reboot. HP OmniBook 900 Troubleshooting and Diagnostics 3-11,

Diagnostic Tools

This section describes the following diagnostic tools you can use for troubleshooting and repairing the OmniBook: • OmniBook hardware diagnostic program (below). • Power-on self-test (page 3-17). • Sycard PCCtest 450 PC Card (page 3-20). • Desktop Management Interface (page 3-21). • BIOS Setup utility (page 3-23).

OmniBook Diagnostic Program

The OmniBook hardware diagnostic program provides two levels of testing: • User-level testing using the basic hardware test. • Advanced testing using the individual hardware tests. Figure 3-2. OmniBook Diagnostic Screens — Basic and Advanced The tests are designed to run after the system reboots. This ensures that the computer will be in a predictable state, so the diagnostic program can properly test the hardware components. The tests are non-destructive and are intended to preserve the state of the computer. The OmniBook reboots when you exit the program so drivers can be loaded. Creating a Diagnostic Floppy Disk You do not have to create a diagnostic floppy disk unless you want to create a Support Ticket file containing test results. Otherwise, you can run the diagnostics from the hard disk drive. After inserting a formatted floppy disk in the floppy drive, do one of the following to create a diagnostic floppy disk: • On an OmniBook with a factory software installation, run diaginst from the \Dmi\Hpdiags directory on the hard disk. –or– If TopTools is installed, use the DiagTools page to create the disk. 3-12 Troubleshooting and Diagnostics HP OmniBook 900, • On any computer with a CD-ROM drive, run diaginst from the \Omnibook\Drivers\Hputils directory on the OmniBook Recovery CD. • On any computer with World Wide Web access, download the diagnostic software package from the OmniBook website (see page vi), run this file to unpack the files, then run diaginst to create the diagnostic disk. Running the Diagnostic Test You can run the DiagTools diagnostic test two ways: • F10 method. You can’t create a Support Ticket file containing test results, but you don’t need a floppy drive or diagnostic floppy disk to run the test. (F10 is not supported if you’ve removed the Hibernate partition from the hard drive.) –or– • Diagnostic floppy method. You can save test results in a Support Ticket file, but you need an external module bay, floppy drive, and diagnostic floppy disk (see the steps above). 1. F10 method. Reboot the OmniBook. When you see the HP logo, press F10 to start the diagnostic test. Diagnostic floppy. Connect the floppy drive and insert the diagnostic disk. Then reboot the OmniBook. 2. Go through the first several screens. 3. When the hardware detection finishes, check the list of detected hardware. The following information and devices should be listed if applicable: Product name Cache memory Graphics adapter Processor type Main memory Serial ports BIOS version IDE drives Parallel port Serial number Floppy drive, if present Audio device NoteIfadevice is not detected or fails its test below, it may be configured incorrectly in the BIOS Setup utility (page 3-23). You can confirm the problem by running BIOS Setup and checking the settings. 4. Run the basic test. Press F2 to start the basic hardware test. 5. For the diagnostic floppy method, if you intend to exit without running advanced tests, press F4 to save system and test information in the Support Ticket log file, HPSUPPT.TXT. Then remove the diagnostic disk and press F3 to exit. 6. Run the advanced tests. Press F2 to open the advanced test screen. 7. Select and run the appropriate tests. Tests are not listed if no such hardware is detected. Press the following keys to run tests: ENTER Runs the highlighted test. F5 or SPACE Marks or unmarks the highlighted test. F6 Marks or unmarks all tests in the current menu. F7 Marks or unmarks all tests in all menus. F10 Runs all marked tests. If any test fails, the error is logged (error code and description) and displayed temporarily (error code). If several errors occur, look for patterns that might indicate a common cause. See the table HP OmniBook 900 Troubleshooting and Diagnostics 3-13, on page 3-14 for repair suggestions. Consider these suggestions in combination with other troubleshooting information. 8. When you are finished running tests, press ESC to exit the advanced tests. 9. Optional: Save the Support Ticket. For the diagnostic floppy method, press F4 to save system and test information in the Support Ticket log file, HPSUPPT.TXT. 10. Exit. Remove the diagnostic disk and press F3 to exit and reboot. 11. Optional: Check the log. For the diagnostic floppy method, open the HPSUPPT.TXT log file on the diagnostic disk using Notepad or other text editor—you can do this on any computer. It contains a hardware summary and a list of all test results and errors. Note that the serial and parallel port tests are more thorough if you connect a loopback connector to the port before running the test for that port. See the wiring diagrams below. 5 9 These connections are not used. 1 6 Diodes are 1N4004 or equivalent (IF=1A, VF=1V@1A, VR=30-400V) 1 14 Figure 3-3. Serial and Parallel Loopback Connectors Interpreting the Results • The following table lists test groups, error codes, and suggestions for follow-up actions. Consider these suggestions in combination with other troubleshooting information. Table 3-3. OmniBook Diagnostic Error Codes Code Suggestions Code Suggestions System Tests 0074h Bad CMOS time. Reset the system, then run 0001h - Reseat or replace the CPU module. BIOS Setup and check settings. Replace the 0008h motherboard. 0009h Replace the motherboard. 0075h - Reset the system. Replace the motherboard. 0076h 0010h - Reseat or replace the CPU module. 002Fh 0077h Replace the motherboard. 0030h - Replace the motherboard. 0078h Bad CMOS checksum. Reset the system, then 0040h run BIOS Setup and check settings. Replace the motherboard. 0041h Unrecognized interrupts. Run BIOS Setup and check IRQ assignments for all devices. 0079h Replace the motherboard. 0050h - Replace the motherboard. 0083h - Replace the BIOS IC. Replace the 0070h 0086h motherboard. 0071h Bad CMOS checksum. Reset the system, then 0087h Replace the motherboard. run BIOS Setup and check settings. Replace 0088h Replace the BIOS IC. the motherboard. 0090h - Replace the BIOS IC. Replace the 0072h Configuration mismatch in CMOS. Reset the 009Eh motherboard. system, then run BIOS Setup and check 009Fh Insufficient DOS memory. Load fewer device settings. Replace the motherboard. drivers. 0073h Bad CMOS RAM size. Reset the system, then 00A0h No repair. (ESCD not supported.) run BIOS Setup and check settings. Replace the motherboard. 00A1h Replace the BIOS IC. Replace the motherboard. 3-14 Troubleshooting and Diagnostics HP OmniBook 900, Code Suggestions Code Suggestions 00A2h - No repair. (ESCD not supported.) 0280h Check internal and external hard disk 00A3h connectors and motherboard connector. 00A4h Replace the BIOS IC. Replace the hard disk. 00A5h - No repair. (ESCD not supported.) 0281h Replace the hard disk. 00A6h 0290h Rerun the test. If the error persists, replace the 00A7h Replace the BIOS IC. Replace the hard disk. motherboard. 0293h - Replace the hard disk. 00C0h - Replace the CPU module. 0296h 00CCh 02AAh Check internal and external hard disk 00FFh Rerun the test. (Possible diagnostic connectors and motherboard connector. programming error.) Replace the hard disk. Memory Tests 02CCh Run BIOS Setup and check the hard disk type. Replace the hard disk or the motherboard. The addresses below are absolute (32-bit) address. These addresses are not in the segment:offset format. 02EEh For the performance test, run BIOS Setup and temporarily select a drive type that has more 0100h - Replace the motherboard. than 200 cylinders. 0101h 02F1h Recreate the Hibernate partition, then run 0102h Replace the BIOS IC. FDISK to partition the hard disk. 0120h - For 01FFFFFFh and below, replace the 02F2h Run FDISK to make one partition active. If 0150h motherboard. Above that, replace the RAM necessary, recreate the Hibernate partition, board (each 01000000h represents 16MB). then run FDISK to partition the hard disk. 0160h Address bus short. Remove any RAM board 02F3h Run FDISK to check for overlapping partitions. and rerun the test. Check the CPU module for If necessary, recreate the Hibernate partition, shorts. Replace the motherboard. then run FDISK to partition the hard disk. 0170h - Replace the motherboard. 02F4h Check for the presence of a boot sector virus. 0172h If necessary, recreate the Hibernate partition, 0180h For 01FFFFFFh and below, replace the then run FDISK to partition the hard disk. motherboard. Above that, replace the RAM 02F5h Reformat the partition. board (each 01000000h represents 16MB). 02F6h Recreate the Hibernate partition, then run 0181h Replace the CPU module. FDISK to partition the hard disk. 0182h Make sure that another application is not using 02FFh Check internal and external hard disk all extended memory allocated by connectors and motherboard connector. HIMEM.SYS. Replace the hard disk. Replace the 0183h No extended memory. Check installation of any motherboard. RAM board. Replace the motherboard. Floppy Disk Tests 0184h Remove any RAM board. Replace the CPU 0301h Replace the floppy drive. Replace the module, replace the motherboard. motherboard. 0190h - For 01FFFFFFh and below, replace the 0302h Run BIOS Setup and check the floppy drive 01A0h motherboard. Above that, replace the RAM type. Replace the floppy drive. board (each 01000000h represents 16MB). 0303h Insert a floppy disk without write protection. 01A1h - Replace the CPU module. 01A4h 0304h Run BIOS Setup and check the floppy drive type. Replace the floppy drive. Hard Disk Tests 0305h Replace the motherboard. 0201h Replace the hard disk. Replace the motherboard. 0307h Run BIOS Setup and check the floppy drive type. Check the connectors on the floppy drive, 0202h - Rerun the test. If error persists, replace the external module bay, and motherboard. 0204h hard disk. Replace the floppy drive. 0205h Replace the motherboard. 0308h - Transient DMA error. Rerun the test. 0207h Run BIOS Setup and check the hard disk type. 0309h Check internal and external hard disk 030Ah - Rerun the test with a good floppy disk. Replace connectors and motherboard connector. 0310h the floppy drive. Replace the hard disk. 0311h Rerun the test with another floppy disk. 0208h - Transient DMA error. Rerun the test. 0209h 0321h - Replace the floppy drive. 0322h 020Ah - Rerun the test. Run SCANDISK or equivalent. 0211h 0340h Replace the motherboard. 0220h Replace the motherboard. 0380h - Make sure the floppy disk is fully inserted. 03AAh Check the connectors on the floppy drive, 0240h Replace the hard disk. Replace the external module bay, and motherboard. motherboard. Replace the floppy drive. HP OmniBook 900 Troubleshooting and Diagnostics 3-15, Code Suggestions Code Suggestions 03CCh Run BIOS Setup and check the floppy drive CD-ROM Tests type. Rerun the test with another floppy disk. 0A00h Insert a CD in the drive. Replace the floppy drive. Replace the motherboard. 0A01h Rerun the test. Replace the CD-ROM drive. 03EEh - Check the connectors on the floppy drive, 0A02h No repair. (Automatic close not supported.) 03FFh external module bay, and motherboard. Rerun 0A03h Insert a different CD in the drive. Check the the test with another floppy disk. Replace the connectors on the CD-ROM drive, external floppy drive. Replace the motherboard. module bay, and motherboard. Replace the Keyboard Tests CD-ROM drive. 0400h - Replace the motherboard. 0A04h Insert a computer CD in the drive. 0401h 0A05h Insert a different CD in the drive. Check the 0410h - Check the keyboard flex cable connection. connectors on the CD-ROM drive, external 0414h Replace the keyboard. Replace the module bay, and motherboard. Replace the motherboard. CD-ROM drive. 0415h Replace the motherboard. 0A06h Insert an audio CD in the drive. 0416h - Replace the keyboard. Replace the SMBus Tests 0418h motherboard. 0E00h - Replace the motherboard. Serial Port Tests 0E10h 0601h For the external loopback test, make sure the ATAPI Removable Tests (LS-120) loopback connector is installed and constructed 0F02h - Rerun the test. Insert a different disk in the LS- properly. For the external or internal loopback 0F03h 120 drive. Check the connectors on the LS-120 test, replace the motherboard. drive, external module bay, and motherboard. 0602h Replace the motherboard. Replace the LS-120 drive. 0603h For the external loopback test, make sure the 0F04h - Replace the LS-120 drive. loopback connector is installed and constructed 0F05h properly. For the external or internal loopback TI CardBus Tests test, replace the motherboard. 1201h Memory space not available. Remove any 0604h - Replace the motherboard. attached ISA or PCI cards. 0605h 1202h - Replace the motherboard. 0606h For the external loopback test, make sure the 1203h loopback connector is installed and constructed 1205h - Insert a different PC Card. Replace the properly. For the external or internal loopback 1206h PCMCIA socket. Replace the motherboard. test, replace the motherboard. USB Tests 0607h Make sure the loopback connector is installed and constructed properly. Replace the 1301h Reprogram the BIOS IC. Replace the BIOS IC. motherboard. Replace the motherboard. 0608h - Replace the motherboard. 1302h - Replace the motherboard. 0617h 1312h Parallel Port Tests 9006h (See USB Port Test near end of table.) 0701h For the external loopback test, make sure the LCD Test loopback connector is installed and constructed 8000h If the test fails with an external monitor (must properly. For the external or internal loopback support VESA mode 105h), replace the test, replace the motherboard. motherboard. Otherwise: 0702h Replace the motherboard. - If the shaded-band test fails, check the LCD flex cable connection in the bottom case, 0703h Run BIOS Setup and disable ECP for the replace the LCD flex cable, replace the parallel port, then rerun the test. Replace the motherboard. motherboard. - If only a solid-color test fails, see chapter 5 for 0704h - Replace the motherboard. cosmetic guidelines, replace the LCD module. 0706h Suspend/Resume Test 0707h Connect the loopback connector. 9005h Run BIOS Setup and restore default settings. 0708h Replace the motherboard. Reprogram the BIOS IC. Replace the BIOS IC. Audio Tests Replace the motherboard. 0810h If this error also occurs for an external USB Port Test headphone, replace the motherboard. 9006h Make sure a USB device is connected to the Otherwise, check the speaker connection, port you are testing. Select the correct speed replace the speaker. for the device. Replace the motherboard (or Video Tests dock component, if applicable). 0900h - Replace the motherboard. 0920h 8000h (See LCD Test near end of table.) 3-16 Troubleshooting and Diagnostics HP OmniBook 900, Code Suggestions Code Suggestions IR Tests (FIR enabled, undocked) 900Ah Rerun the test. For the two-unit test, make sure 9002h, Rerun the test. Replace the motherboard. the IR ports on the reflector and test computers 9007h - are lined up. Replace the motherboard. 9008h 900Ch Rerun the test. Make sure the IR ports on the 9009h Do not run this test in Windows. For the one- reflector and test computers are lined up. unit test, replace the motherboard. For the two- Restart the reflector unit. Replace the unit test, make sure the IR ports on the motherboard. reflector and test computers are lined up, replace the motherboard.

Power-On Self-Test

Note If Quiet Boot is enabled in BIOS Setup (the default setting), press ESC during boot to see POST messages. The POST (Power-On Self-Test) is a series of initialization routines and diagnostic tests that the system BIOS runs when the computer boots. The system BIOS will not boot the operating system if system memory, the CPU, DMA, or the interrupt controller fails the POST diagnostic tests. POST progress is indicated by a sequence of codes. If possible, error messages are displayed. You should not interpret the failure of one or more POST tests as a hardware, software, or firmware failure. First, confirm the failure with a “clean” boot: • Remove all accessories, including RAM boards, floppy drive, port replicator, PC Cards, printer, external monitor, pointing device, and keyboard. • Provide “clean” ac power—no auto adapter or unusual ac adapter configuration. • Press the system-off button to start from a known state. If the computer fails to boot with a clean boot, it requires repair. If an error message is displayed, confirm the problem using other diagnostic tools. Not all POST messages indicate a hardware, software, or firmware failure—some messages are informational messages. If the BIOS detects a terminal error condition, it halts POST after issuing a terminal error beep code— up to four groups of 1 to 4 short beeps. The beep code indicates the POST routine in which the terminal error occurred. The BIOS also issues a beep code (one long tone followed by two short tones) during POST if the video configuration fails (no card installed or faulty) or if an external ROM module does not properly checksum to zero. Table 3-4. POST Terminal-Error Beep Codes Beep Codes POST Description 1 One short beep before boot 1-2 Search for option ROMs. One long, two short beeps on checksum failure 1-2-2-3 BIOS ROM checksum 1-3-1-1 Test DRAM refresh 1-3-1-3 Test 8742 Keyboard Controller 1-3-4-1 RAM failure on address line xxxx 1-3-4-3 RAM failure on data bits xxxx of low byte of memory bus 1-4-1-1 RAM failure on data bits xxxx of high byte of memory bus 2-1-2-3 Check ROM copyright notice 2-2-3-1 Test for unexpected interrupts HP OmniBook 900 Troubleshooting and Diagnostics 3-17,

The following table lists POST messages and explanations for reported problems. If the system fails

after you make changes in BIOS Setup, reset the computer, enter BIOS Setup, and install the defaults or correct the error. Table 3-5. POST Messages Message Description 0200 Failure Fixed Disk Fixed disk is not working or not configured properly. Check to see if fixed disk is attached properly. Run Setup. Find out if the fixed-disk type is correctly identified. 0210 Stuck key Stuck key on keyboard. 0211 Keyboard error Keyboard not working. 0212 Keyboard Controller Failed Keyboard controller failed test. May require replacing keyboard controller. 0213 Keyboard locked - Unlock key switch Unlock the system to proceed. 0220 Monitor type does not match CMOS - Run SETUP Monitor type not correctly identified in Setup 0230 Shadow Ram Failed at offset: nnnn Shadow RAM failed at offset nnnn of the 64k block at which the error was detected. 0231 System RAM Failed at offset: nnnn System RAM failed at offset nnnn of in the 64k block at which the error was detected. 0232 Extended RAM Failed at offset: nnnn Extended memory not working or not configured properly at offset nnnn. 0250 System battery is dead - Replace and run SETUP The CMOS clock battery indicator shows the battery is dead. Connect the ac adapter for at least 24 hours, replace the motherboard. 0251 System CMOS checksum bad - Default configuration used System CMOS has been corrupted or modified incorrectly, perhaps by an application program that changes data stored in CMOS. The BIOS installed Default Setup Values. If you do not want these values, enter Setup and enter your own values. If the error persists, check the system battery. Connect the ac adapter for at least 24 hours, replace the motherboard. 0260 System timer error The timer test failed. Requires repair of system board. 0270 Real time clock error Real-time clock fails BIOS test. May require board repair. 0280 Previous boot incomplete - Default configuration used Previous POST did not complete successfully. POST loads default values and offers to run Setup. If the failure was caused by incorrect values and they are not corrected, the next boot will likely fail. This error is cleared the next time the system is booted. 0281 Memory Size found by POST differed from CMOS Memory size found by POST differed from CMOS. 02B0 Diskette drive A error 02B1 Diskette drive B error Drive A: or B: is present but fails the BIOS POST diskette tests. Check to see that the drive is defined with the proper diskette type in Setup and that the diskette drive is attached correctly. 02B2 Incorrect Drive A type - run SETUP Type of floppy drive A: not correctly identified in Setup. 02B3 Incorrect Drive B type - run SETUP Type of floppy drive B: not correctly identified in Setup. 02D0 System cache error - Cache disabled RAM cache failed and BIOS disabled the cache. On older boards, check the cache jumpers. You may have to replace the cache. See your dealer. A disabled cache slows system performance considerably. 02F0: CPU ID: CPU socket number for Multi-Processor error. 02F4: EISA CMOS not writeable ServerBIOS2 test error: Cannot write to EISA CMOS. 3-18 Troubleshooting and Diagnostics HP OmniBook 900, Message Description 02F5: DMA Test Failed ServerBIOS2 test error: Cannot write to extended DMA (Direct Memory Access) registers. 02F6: Software NMI Failed ServerBIOS2 test error: Cannot generate software NMI (Non-Maskable Interrupt). 02F7: Fail-Safe Timer NMI Failed ServerBIOS2 test error: Fail-Safe Timer takes too long. device Address Conflict Address conflict for specified device. Allocation Error for: device Run ISA or EISA Configuration Utility to resolve resource conflict for the specified device. CD ROM Drive CD ROM Drive identified. Entering SETUP... Starting Setup program Failing Bits: nnnn The hex number nnnn is a map of the bits at the RAM address which failed the memory test. Each 1 (one) in the map indicates a failed bit. See errors 230, 231, or 232 above for offset address of the failure in System, Extended, or Shadow memory. Fixed Disk n Fixed disk n (0-3) identified. Invalid System Configuration Data Problem with NVRAM (CMOS) data. I/O device IRQ conflict I/O device IRQ conflict error. PS/2 Mouse Boot Summary Screen: PS/2 Mouse installed. nnnn kB Extended RAM Passed Where nnnn is the amount of RAM in kilobytes successfully tested. nnnn Cache SRAM Passed Where nnnn is the amount of system cache in kilobytes successfully tested. nnnn kB Shadow RAM Passed Where nnnn is the amount of shadow RAM in kilobytes successfully tested. nnnn kB System RAM Passed Where nnnn is the amount of system RAM in kilobytes successfully tested. Operating system not found Operating system cannot be located on either drive A: or drive C:. Enter Setup and see if fixed disk and drive A: are properly identified. Parity Check 1 nnnn Parity error found in the system bus. BIOS attempts to locate the address and display it on the screen. If it cannot locate the address, it displays ????. Parity is a method for checking errors in binary data. A parity error indicates that some data has been corrupted. Parity Check 2 nnnn Parity error found in the I/O bus. BIOS attempts to locate the address and display it on the screen. If it cannot locate the address, it displays ????. Press to resume, to Setup, for previous Displayed after any recoverable error message. Press to start the boot process or to enter Setup and change the settings. Press to display the previous screen (usually an initialization error of an Option ROM, such as an add-on card). Write down and follow the information shown on the screen. Press to enter Setup Optional message displayed during POST. PS/2 Mouse: PS/2 mouse identified. System BIOS shadowed System BIOS copied to shadow RAM. UMB upper limit segment address: nnnn Displays the address nnnn of the upper limit of Upper Memory Blocks, indicating released segments of the BIOS which can be reclaimed by a virtual memory manager. Video BIOS shadowed Video BIOS copied to shadow RAM. HP OmniBook 900 Troubleshooting and Diagnostics 3-19,

Sycard PCCtest 450 CardBus Card (Optional)

The PCCtest 450 CardBus Card (version 1.05) available from Sycard Technology is an optional diagnostic tool. It is the only recommended tool that tests the functionality of the PCMCIA slots. It is a Type II CardBus Card that works with compatible test software to exercise PCMCIA functions. (See the Sycard Technology website, http://www.sycard.com.) The PCCtest 450 product contains these components: • PCCtest 450 CardBus Card, version 1.05. • PCCtest 450 software disk. (Software updates are available at the Sycard Technology website, http://www.sycard.com.) • Configuration headers (PC Card/16-bit and CardBus/32-bit), which attach to the card. You will also need: • CardBus extender card to avoid wear on the Sycard PCMCIA connector. The Sycard PCCextend 70 extender card is an example. The Sycard PCCtest 450 provides the following tests. See the Sycard documentation for details about running the tests. • PCMCIA PC Card (16-bit) test, PCT450 (version 1.17). Requires the PC Card configuration header. Run the test for the Texas Instruments PCI1225 socket controller—suggested commands Upper slot: PCT450 -b69 -1 -v Lower slot: PCT450 -b69 -0 -v • CardBus (32-bit) test, TESTCB (version 2.05). Requires the CardBus configuration header. Run the test for the Texas Instruments PCI1225 socket controller—suggested commands Upper slot: TESTCB -b69 -1 -v -jsd000 Lower slot: TESTCB -b69 -0 -v -jsd000 -k6 3-20 Troubleshooting and Diagnostics HP OmniBook 900,

Desktop Management Interface (DMI)

The Desktop Management Interface (DMI) is basically a set of rules for accessing information about a personal computer. Using DMI, an application program can determine, for example, which hardware and software components are present in a personal computer, the operating system that is being used, and the number of accessory board slots that are available. Using the DMI interface, a local or remote application program can check what hardware and software components are installed on your computer, and may be able to tell how well they are working or whether any needs replacing. All this information is stored in a special Management Information Format (MIF) file, installed on each personal computer as part of the DMI package. Installing the DMI Package The DMI package is included with the OmniBook, but it must be properly installed before it can be used. The following steps explain how. To install the DMI preloaded on the hard disk: 1. Start Windows, if it is not already running. 2. Click Start, Programs, HP DMI, Setup. To install the DMI from the OmniBook Recovery CD or from floppy disks: 1. If you do not have a CD-ROM drive, create installation floppy disks • On any computer with a CD-ROM drive, copy the DMI software from the dmi directory of the Recovery CD (under \omnibook\drivers) to two or more floppy disks (for example, copy the contents of the \disk1 subdirectory to disk #1). • On any computer with World Wide Web access, download the Top Tools package from the OmniBook website (see page vi), then create the floppy disks as directed. 2. Start Windows, if it is not already running. 3. Insert the Recovery CD into the CD-ROM drive, or insert disk #1 into the floppy drive. 4. Select and run the SETUP program from the dmi\disk1 directory on the CD (under \omnibook\drivers), or from floppy disk #1. Uninstalling the DMI Package 1. Click Start, Programs, HP DMI, Uninstall DMI. 2. Reboot the PC. Using the DMI Interface For a complete explanation of how to fully take advantage of DMI, the following documentation is provided with the OmniBook: • A README.TXT file. • A Windows online help file describing Hewlett-Packard’s implementation of DMI (group and attribute definitions). Since not all Hewlett-Packard enhanced features are supported on all models, this document also describes any restrictions that apply. HP OmniBook 900 Troubleshooting and Diagnostics 3-21, Description of DMI The Desktop Management Interface (DMI) is the result of the efforts of the Desktop Management Task Force (DMTF). This task force was founded in 1992 by a group of leading computer manufacturers, including Hewlett-Packard, to define a standard method of managing the physical and logical components of personal computers. Hewlett-Packard has developed a number of extensions to DMI to allow the enhanced features of HP OmniBook computer to be managed with DMI, including features such as passwords and tattooing (identifying a computer using a unique string of characters). For full details of the structure of the MIF file, including an explanation of the meaning of the fields of groups and attributes and how to write an application program that accesses this information, you can access the DMTF FTP server ftp.dmtf.org or the DMTF web pages at the http://www.dmtf.org. Contents of the DMI Package The DMI software and associated documentation is supplied either preinstalled on the OmniBook’s hard disk drive or on two floppy disks. The contents of the package are the same in both cases. Since the information accessed by the DMI software is specific to a particular computer, it must be installed on each computer separately. The DMI package included with the OmniBook can be used only with the OmniBook. The following software is supplied with the DMI package: • A Microsoft Windows utility, SETUP.EXE, to install and initialize the DMI software. • A Windows utility, HP TopTools. After DMI is installed, this utility can be used to display information about the computer through the DMI. • A Management Information Format (MIF) file. This file contains information about everything on the computer that can be controlled using DMI facilities, and is initialized during installation. • A component code, identifying the version of MIF file to use for specific models of HP OmniBook computers. • Windows-compatible DMTF Service Layer software, which controls access to the DMI. • A client agent. The HP Remote DMI Agent is a DMI application and also a network server-side stream-based application. The Remote Agent is listening for Remote Application connection requests. If the main window of the Remote Agent is hidden, then no icon will appear on the screen when it is running. 3-22 Troubleshooting and Diagnostics HP OmniBook 900,

BIOS Setup Utility

The BIOS Setup utility provides access to basic configuration settings. It is independent of the operating system. Running the BIOS Setup Utility 1. Close all applications, then shut down Windows and reboot the OmniBook. If necessary, you can press CTRL+ALT+DEL to reboot. 2. During reboot, press F2 to start the BIOS Setup utility. 3. The pointing device or mouse is not active in the BIOS Setup utility. Press the RIGHT and LEFT arrow keys to move among menus. Press the DOWN and UP arrow keys to move among parameters in a menu. Press ENTER to change a setting. See the table below for more information. 4. After you select the options you want, press F10 or use the Exit menu to exit the BIOS Setup utility. If the settings cause a conflict between devices during reboot, the system prompts you to run BIOS Setup, and the conflicting settings are marked. Table 3-6. BIOS Setup Menus and Parameters Main Menu Default Language Sets the language for this utility and BIOS messages. English. BIOS Revision Shows the current BIOS version. Detected automatically. System Time Sets the time using 24-hour format. Values set take effect immediately. System Date Sets the date using mm/dd/yy (English) or dd/mm/yy format. Floppy Drive Sets the floppy drive type. Detected and set automatically. Internal Hard Disk Sets the hard disk drive type and various parameters. Detected and set automatically. Quiet Boot When enabled, hides summary of power-on self-test and Enabled messages during boot. Video Display Device Sets whether the built-in and external display signals Auto automatically switch when an external display is detected, or whether both signals are active. Pressing Fn+F5 temporarily switches displays. Video Expansion Sets whether the video image expands to fill the display in Disabled lower resolution modes (VGA). When disabled, the video image is centered in the display. Primary Video Adapter Sets whether the internal (built-in) video adapter automatically Auto switches to an external video adapter connected to the docking system, if one is detected. (Select Internal to use multiple-monitor capability of Windows 98.) System Memory Shows the system memory size. 640KB Extended Memory Shows the extended memory size. Detected automatically. System Devices Menu Default PS/2 Pointing Devices Sets whether internal pointing devices are automatically Auto disabled when an external PS/2 pointing device is detected, or whether both internal and external devices are active. This is required for the scroll wheel on a PS/2 mouse to function. HP OmniBook 900 Troubleshooting and Diagnostics 3-23, Internal Pointing Devices Enables one or both built-in PS/2 devices. Both External Fn Key Sets whether left-CTRL + left-ALT on an external keyboard is Enabled interpreted as the Fn key. IDE Controller Enables the primary (hard drive) and secondary (optional CD- Both ROM drive) controllers. FDD Controller Enables the floppy drive. Enabled Serial Port Sets how the serial port is configured by the BIOS (specified Enabled or automatic). Base I/O address Sets the I/O address and interrupt. 3F8h, IRQ4 Infrared Port Sets how the infrared port is configured by the BIOS (specified Disabled or automatic). Mode Sets the hardware to support SIR (Standard IR), ASK IR SIR (amplitude shift keyed IR), or FIR (Fast IR) infrared communications. (Driver installation required.) Base I/O address Sets the I/O address and interrupt. 2F8h, IRQ3 DMA channel For Fast IR mode, sets the DMA channel. DMA3 Parallel Port Sets how the parallel port is configured by the BIOS (specified Enabled or automatic). Mode Sets the port to normal, bidirectional, EPP, or ECP. ECP Base I/O address Sets the I/O address. 378h Interrupt Sets the interrupt. IRQ7 DMA channel For ECP mode, sets the DMA channel. DMA3 Audio Sets how the audio system is configured by the BIOS Enabled (specified or automatic). SB I/O address Sets the Sound Blaster I/O address. 220h WSS I/O address Sets the Windows Sound System I/O address. 530h AdLib I/O address Sets the AdLib synthesizer I/O address. 388h Interrupt Sets the interrupt. IRQ5 1st DMA channel Sets the DMA channel for playback. DMA1 2nd DMA channel Sets the DMA channel for recording. DMA0 Security Menu Default User Password Is Shows if a user password is set. Clear Administrator Password Is Shows if an administrator password is set. Clear Set User Password Press ENTER to set, change, or clear user password. Password length can be no longer than 8 characters, 0-9, A-Z, and cannot include special or accented characters. Set Administrator Press ENTER to set, change, or clear administrator password. Password This password protects BIOS Setup settings. Password length can be no longer than 8 characters, 0-9, A-Z, and cannot include special or accented characters. Boot Sets whether a password is required when the computer Enabled boots. Resume If boot security is enabled, sets whether a password is Enabled required when resuming from a suspended state. Undock If boot security is enabled, sets whether a password is Disabled required when undocking the OmniBook. Internal Hard Disk Drive If boot security is enabled, sets whether a password is stored Disabled Lock on the hard disk. Secures data on the disk if the disk is moved to another computer. Floppy Boot Sets whether the floppy drive is a boot device. Enabled 3-24 Troubleshooting and Diagnostics HP OmniBook 900, Power Menu Default If ACPI is activated in Windows 98, ACPI settings override settings in this menu. Power Management Mode Disables time-outs, selects a combination of time-outs, or Max Power allows customized time-outs. Savings Smart CPU Mode Enables automatic CPU power savings. Absence of keyboard, Off mouse, and hard disk activity could cause slower CPU response. This should normally be Off. Standby Time-out Sets the period of inactivity after which the computer goes 2 minutes from On to Standby power mode. Suspend Time-out Sets the period of inactivity after which the computer goes 4 minutes from Standby to Suspend power mode. (Skips Standby mode if that time-out is disabled.) Hibernate Time-out Sets whether the computer goes from Suspend to Hibernate 4 hours power mode after the indicated period of inactivity. (Skips Suspend mode if that time-out is disabled.) Hard Disk Time-out Sets the period of hard disk inactivity after which the hard disk 2 minutes stops spinning. Also affects a hard disk drive in the plug-in module bay. Time-out on AC Sets whether power management time-outs occur while the ac Disabled adapter is connected. Power Button Mode Sets the action of the blue power button when pressed for less Suspend than 4 seconds. Lid Switch Mode Sets the action when the OmniBook lid closes. Turn Off LCD Resume on Serial Ring Sets whether the system resumes from Suspend if a ring Enabled signal is received. Resume on Time of Day Sets whether the system resumes from Suspend at a defined Disabled time of day. Resume Time Sets the 24-hour time when the system resumes from Suspend if enabled. Auto Suspend on Undock Sets whether the OmniBook suspends after undocking. When Lid Closed Auto Turn-on on Dock Sets whether the OmniBook turns on after docking. Enabled Boot Menu Default Diskette Drive Shows the order of boot devices. Move the entries to change 1. Diskette drive Hard Drive the order. 2. Hard drive CD-ROM/DVD Drive 3. CD-ROM/DVD drive Exit Menu Save Changes and Exit Saves Setup changes, exits, and reboots. Discard Changes and Exit Discards Setup changes since last save, exits, and reboots. Does not affect Security and date/time changes. Get Default Values Restores default settings, stays in Setup. Does not affect Security and date/time settings. Load Previous Values Discards Setup changes since last save, stays in Setup. Does not affect Security and date/time changes. Save Changes Saves Setup changes, and stays in Setup. Security settings are saved when changed. HP OmniBook 900 Troubleshooting and Diagnostics 3-25,

Replaceable Parts

This chapter contains an exploded view of the OmniBook and the following lists of parts: • OmniBook replaceable parts (page 4-3). • Assembly-component breakout (page 4-6) • Accessory replacement parts (page 4-6). • Part number reference (page 4-7). HP OmniBook 900 Replaceable Parts 4-1, Display components (see page 4-5). Figure 4-1. Exploded View 4-2 Replaceable Parts HP OmniBook 900, Table 4-1. OmniBook Replaceable Parts Description Part Number Exchange User Part Number Replaceable Assembly, external module bay F1711-60901 Yes 1 Battery, lithium-ion F1711-60902 Yes 2 Bezel, display (IBM) F1711-60915 3 Blank, PCMCIA filler 5182-5194 Yes 4 Bumper, display (upper) F1711-60913 Yes 5 Cable, display flex F1711-60918 6 Cable, display power F1711-60919 Cap, pointing stick F1320-60971 Yes 7 Case, bottom * F1711-60922 8 Case, display * F1711-60917 9 Case, HDD kit F1711-60904 Yes 10 Case, top * F1711-60920 11 Cover, display screw (lower) F1711-60914 Yes 12 Cover, hinge (left, right pair) F1711-60937 Yes 13 Cover, keyboard screw F1711-60912 Yes 14 CPU, 300MHz Pentium II (mini-cartridge) 1821-4833 F1711-69103 14 CPU, 366MHz Pentium II (mini-cartridge) 1821-4834 F1711-69104 15 Door, HDD F1711-60905 Yes 16 Door, module bay connector F1711-60961 Drive, floppy disk module (no cable) F1472-80001 Yes 17 Drive, hard disk (4.3GB, 9.5mm, IBM) * 0950-3409 F1711-69100 Yes 17 Drive, hard disk (6.4GB, 9.5mm, IBM) * 0950-4332 F1711-69101 Yes 18 Fan F1711-60926 Foot F1711-60931 Yes 19 Heatsink (with thermal pads) * F1711-60932 20 Hinge, display (left, right pair) F1711-60938 Holder, business card F1460-60962 IC, BIOS F1711-60927 21 Insulator, bottom case F1711-60963 22 Keyboard, Canadian 5182-5167 22 Keyboard, Danish 5182-5175 22 Keyboard, French 5182-5170 22 Keyboard, German 5182-5168 22 Keyboard, International English 5182-5166 22 Keyboard, Italian 5182-5174 22 Keyboard, Norwegian 5182-5176 22 Keyboard, Spanish 5182-5169 22 Keyboard, Swedish 5182-5172 22 Keyboard, Swiss 5182-5171 22 Keyboard, UK English 5182-5173 22 Keyboard, US English 5182-5165 Label, regulatory F1711-60929 23 Latch, display F1711-60916 24 LCD module (12" TFT, IBM) F1711-60939 F1711-69039 Lens, infrared F1711-60928 Overlay, serial number 7121-7525 HP OmniBook 900 Replaceable Parts 4-3, Description Part Number Exchange User Part Number Replaceable Pads, thermal (set of 2) F1711-60959 25 PCA, motherboard * F1711-60925 F1711-69025 26 Screw, M1.4×4mm (tapping) F1711-60934 27 Screw, M2×5mm F1443-60921 28 Screw, M2.5×4mm F1460-60990 Yes 29 Screw, M2.5×5mm F1460-60984 Yes 30 Screw, M2.5×8mm F1440-60987 31 Screw, M3×4mm F1629-60911 32 Screw, M3×6mm F1580-60956 33 Socket, PCMCIA F1711-60924 34 Speaker (with foam pads) F1711-60923 35 Standoff, M2×9mm hex (CPU) F1711-60935 Standoff, 4-11258-2 (docking) F1391-60953 Standoff, 4-40UNC hex (I/O) F1711-60936 36 Support, hinge (left) F1711-60910 37 Support, hinge (right) F1711-60911 38 Support, touch-pad F1711-60960 Tape, Kapton roll F1391-60963 39 Touch pad (with cable) F1711-60921 * See Table 4-2 for components. ** These hard drives are the preferred drives at the time of publication. Drives shipped in units are subject to change without notice. For current information about preferred and approved drives for these products, see the latest versions of service notes HDD4G-01 and HDD6G-01. 4-4 Replaceable Parts HP OmniBook 900, Figure 4-2. Display Components HP OmniBook 900 Replaceable Parts 4-5, Table 4-2. Assembly-Component Breakdown Assembly Part Number Components Part Numbers Incl. Case, bottom F1711-60922 Door, HDD F1711-60905 No Door, module bay connector F1711-60961 No Feet (4) F1711-60931 Yes Insulator, bottom case F1711-60963 No Label, regulatory F1711-60929 Yes Label, serial number (see page 2-20) No Lens, infrared F1711-60928 No Overlay, serial number 7121-7525 No Speaker F1711-60923 No Case, display F1711-60917 Latch, display F1711-60916 No Case, top F1711-60920 Support, touch pad F1711-60960 No Touch pad F1711-60921 No Heatsink F1711-60932 Pads, thermal F1711-60959 Yes PCA, motherboard F1711-69025 IC, BIOS F1711-60927 Yes Socket, PCMCIA F1711-60924 No Table 4-3. Accessory Replaceable Parts Description Part Number Exchange User Part Number Replaceable Adapter, ac (60W) 0950-2790 Yes Adapter, auto plug (from airline) 5182-5131 Yes Adapter, auto/airline (75W) F1455-80001 Yes Adapter, docking module bay F1468-60901 Yes Adapter, PS/2 "Y" F1469-80001 Yes Assembly, external module bay F1711-60901 Yes Battery, lithium-ion F1711-60902 Yes Cable, external FDD F1473-80001 Yes Cable, MPEG PC card F1465-60904 Yes Card, PC (MPEG) F1465-60902 Yes CD, DVD player (MPEG) F1465-60903 Yes Charger, battery (external) F1706-60901 Yes Docking system (with tall monitor stand) (see Docking System Service Manual) Drive, CD-ROM module F1474-80001 Yes Drive, DVD module F1465-80001 Yes Drive, floppy disk module (no cable) F1472-80001 Yes Drive, LS-120 module F1470-80001 Yes Mini dock F1452-60901 Yes Monitor stand (short) F1453-60901 Yes Monitor stand (tall) (see Docking System Service Manual) Port replicator F1451-60901 Yes RAM board, 32MB SDRAM 1818-7413 F1456-69001 Yes RAM board, 64MB SDRAM 1818-7414 F1457-69001 Yes RAM board, 128MB SDRAM 1818-7549 F1622-69001 Yes Tray, docking “D” (OB900 with docking system) F1477-60958 Yes Tray, standard “D” (OB900 with port replicator, mini dock) F1452-60909 Yes 4-6 Replaceable Parts HP OmniBook 900, Table 4-4. Part Number Reference Part Number Exchange Description User Part Number Replaceable 0950-2790 Adapter, ac (60W) Yes 0950-3409 F1711-69100 Drive, hard disk (4.3GB, 9.5mm, IBM) * Yes 0950-4332 F1711-69101 Drive, hard disk (6.4GB, 9.5mm, IBM) * Yes 1818-7413 F1456-69001 RAM board, 32MB SDRAM Yes 1818-7414 F1457-69001 RAM board, 64MB SDRAM Yes 1818-7549 F1622-69001 RAM board, 128MB SDRAM Yes 1821-4833 F1711-69103 CPU, 300MHz Pentium II (mini-cartridge) 1821-4834 F1711-69104 CPU, 366MHz Pentium II (mini-cartridge) 5182-5131 Adapter, auto plug (from airline) Yes 5182-5165 Keyboard, US English 5182-5166 Keyboard, International English 5182-5167 Keyboard, Canadian 5182-5168 Keyboard, German 5182-5169 Keyboard, Spanish 5182-5170 Keyboard, French 5182-5171 Keyboard, Swiss 5182-5172 Keyboard, Swedish 5182-5173 Keyboard, UK English 5182-5174 Keyboard, Italian 5182-5175 Keyboard, Danish 5182-5176 Keyboard, Norwegian 5182-5194 Blank, PCMCIA filler Yes 7121-7525 Overlay, serial number 8120-6312 Power cord, replacement (Australia) Yes 8120-6313 Power cord, replacement (US, Canada, Taiwan) Yes 8120-6314 Power cord, replacement (Europe) Yes 8120-6316 Power cord, replacement (Japan) Yes 8120-6317 Power cord, replacement (South Africa, India) Yes 8120-8367 Power cord, replacement (Argentina) Yes 8120-8373 Power cord, replacement (China) Yes 8120-8452 Power cord, replacement (Chile) Yes 8120-8699 Power cord, replacement (UK, Singapore, Hong Kong) Yes F1320-60971 Cap, pointing stick Yes F1391-60953 Standoff, 4-11258-2 (docking) F1391-60963 Tape, Kapton roll F1440-60987 Screw, M2.5×8mm F1443-60921 Screw, M2×5mm F1451-60901 Port replicator F1452-60901 Mini dock F1452-60909 Tray, standard “D” (OB900) Yes F1453-60901 Monitor stand (short) Yes F1455-80001 Adapter, auto/airline (75W) Yes F1460-60962 Holder, business card F1460-60984 Screw, M2.5×5mm Yes F1460-60990 Screw, M2.5×4mm Yes F1462-60901 OmniBook Performance 98 Group training kit HP OmniBook 900 Replaceable Parts 4-7, Part Number Exchange Description User Part Number Replaceable F1465-60902 Card, PC (MPEG) Yes F1465-60903 CD, DVD player (MPEG) Yes F1465-60904 Cable, MPEG PC card Yes F1465-80001 Drive, DVD module Yes F1468-60901 Adapter, docking module bay Yes F1469-80001 Adapter, PS/2 "Y" Yes F1470-80001 Drive, LS-120 module Yes F1472-80001 Drive, floppy disk module (no cable) Yes F1473-80001 Cable, external FDD Yes F1474-80001 Drive, CD-ROM module Yes F1477-60958 Tray, docking “D” (OB900) Yes F1580-60956 Screw, M3×6mm F1629-60911 Screw, M3×4mm F1706-60901 Charger, battery (external) Yes F1711-60963 Insulator, bottom case F1711-60901 Assembly, external module bay Yes F1711-60902 Battery, lithium-ion Yes F1711-60904 Case, HDD kit Yes F1711-60905 Door, HDD Yes F1711-60910 Support, hinge (left) F1711-60911 Support, hinge (right) F1711-60912 Cover, keyboard screw Yes F1711-60913 Bumper, display (upper) Yes F1711-60914 Cover, display screw (lower) Yes F1711-60915 Bezel, display (IBM) F1711-60916 Latch, display F1711-60917 Case, display F1711-60918 Cable, display flex F1711-60919 Cable, display power F1711-60920 Case, top F1711-60921 Touch pad (with cable) F1711-60922 Case, bottom F1711-60923 Speaker (with foam pads) F1711-60924 Socket, PCMCIA F1711-60925 F1711-69025 PCA, motherboard F1711-60926 Fan F1711-60927 IC, BIOS F1711-60928 Lens, infrared F1711-60929 Label, regulatory F1711-60931 Foot Yes F1711-60932 Heatsink (with thermal pads) F1711-60934 Screw, M1.4×4mm (tapping) F1711-60935 Standoff, M2×9mm hex (CPU) F1711-60936 Standoff, 4-40UNC hex (I/O) F1711-60937 Cover, hinge (left, right pair) Yes F1711-60938 Hinge, display (left, right pair) F1711-60939 F1711-69039 LCD module (12" TFT, IBM) F1711-60941 Recovery CD, English (OB900, W95/98) 4-8 Replaceable Parts HP OmniBook 900, Part Number Exchange Description User Part Number Replaceable F1711-60942 Recovery CD, German (OB900, W95/98) F1711-60943 Recovery CD, Spanish (OB900, W95/98) F1711-60944 Recovery CD, French (OB900, W95/98) F1711-60945 Recovery CD, Swedish (OB900, W95/98) F1711-60946 Recovery CD, Italian (OB900, W95/98) F1711-60947 Recovery CD, Norwegian (OB900, W95/98) F1711-60948 Recovery CD, Danish (OB900, W95/98) F1711-60949 Recovery CD, Finnish (OB900, W95/98) F1711-60950 Recovery CD, English (OB900, WNT4) F1711-60951 Recovery CD, German (OB900, WNT4) F1711-60952 Recovery CD, Spanish (OB900, WNT4) F1711-60953 Recovery CD, French (OB900, WNT4) F1711-60954 Recovery CD, Swedish (OB900, WNT4) F1711-60955 Recovery CD, Italian (OB900, WNT4) F1711-60956 Recovery CD, Norwegian (OB900, WNT4) F1711-60957 Recovery CD, Danish (OB900, WNT4) F1711-60958 Recovery CD, Finnish (OB900, WNT4) F1711-60959 Pads, thermal (set of 2) F1711-60960 Support, touch-pad F1711-60961 Door, module bay connector F1711-60963 Insulator, bottom case * These drives are the preferred drives at the time of publication. Drives shipped in units are subject to change without notice. For current information about preferred and approved drives for these products, see the latest versions of service notes HDD4G-01 and HDD6G-01. HP OmniBook 900 Replaceable Parts 4-9,

Reference Information

This chapter includes the following reference information: • Password removal policy. • Display quality statement.

Password Removal Policy

If the user forgets the system password, the user calls Technical Support to determine the proper removal procedure. The user must provide proof of ownership, and the OmniBook must be operated during the procedure. The password removal procedure is protected as HP Company Private information. There are a restricted number of locations that can perform password removal. It may not be disclosed or distributed outside those locations. Password removal is strictly controlled. Hewlett-Packard and authorized support providers must ensure with written evidence that the OmniBook being “cleansed” is actually in the possession of the unit’s actual and current owner. This requires a sales receipt showing the unit serial number and owner’s name, or a written statement from the owner attesting that he or she is the owner of the unit. The statement can be a fax copy of the document. The fact that the unit is in the hands of an HP representative on behalf of the customer is not evidence of ownership. In addition, HP will not remove the password of a unit for any non-owner, even if it is requested by law enforcement agencies. If you receive such a request, you should notify management and HP Corporate Legal immediately. (These requests may require a court order prior to our participation.) Further, the entity removing the password must log the name, serial number and date of the removal, and file the written backup with the log. The log and backup are subject to standard record retention process and review. The final issue relating to removal of passwords is that HP cannot provide information to users that would assist them in improperly removing a password and opening a unit. HP OmniBook 900 Reference Information 5-1,

Hewlett-Packard Display Quality Statement

TFT display manufacturing is a high precision but imperfect technology and manufacturers cannot currently produce large displays that are cosmetically perfect. Most, if not all, TFT displays will exhibit some level of cosmetic imperfection. These cosmetic imperfections may be visible to the customer under varying display conditions and can appear as bright, dim, or dark spots. This issue is common across all vendors supplying TFT displays in their products and is not specific to the HP OmniBook display. HP OmniBook TFT displays meet or exceed all TFT manufacturer’s standards for cosmetic quality of TFT displays. HP does not warrant that the displays will be free of cosmetic imperfections. TFT displays may have a small number of cosmetic imperfections and still conform to the display manufacturer’s cosmetic quality specifications. Here are some guidelines to use in determining what action to take on customers’ complaints of cosmetic imperfections in their TFT displays: 1. The unit should be viewed in the customer’s normal operating condition. This means if the customer uses the unit predominately in DOS, in Windows, or in some other application or combination of applications, that is where you should make the determination. Self test is not a normal operating condition and is not a sufficient tool to interpret display quality. 2. Use the table below to determine whether the display should be considered for replacement. These are the only conditions in this guideline that may call for a replacement due to a defect in material or workmanship based on the HP Limited Warranty Statement. 3. If a display is considered for replacement, it should be clear to the customer that cosmetic variations on the replacement display may also exist, and may require the customer to use a work- around to obscure the cosmetic imperfection. 4. Customers with cosmetic-based complaints only, that do not conform to the above conditions and tests will not normally be considered for display replacement. It will be left to the judgment of the HP-responsible person working with the customer, to identify work-arounds that are reasonable and appropriate for the individual customer. Customers who must have a more perfect display solution should consider switching to an OmniBook with a DSTN display. We expect over time that the industry will continue to improve in its ability to produce displays with fewer inherent cosmetic imperfections, and we will adjust our HP guidelines as the improvements are implemented. 5-2 Reference Information HP OmniBook 900, Table 5-1. OmniBook 900 LCD Guidelines (TFT) Type of Imperfection Imperfections Not Allowed IBM 12" TFT, SVGA Electrical Imperfections: • 6 or more single bright dots. Bright dots (a) • 6 or more single dark dots. Dark dots (a) • 10 or more total bright and dark dots. • Any occurrence of double bright dots. • 2 or more double dark dots. • Any occurrence of triple bright dots (or triple dark dots). • Any occurrence of 2 bright or dark dots within 20 mm. Definitions of imperfections: a Bright or dark dot: A subpixel (red, green, or blue dot) that is stuck on or off. HP OmniBook 900 Reference Information 5-3, 1. Product Information 2. Removal and Replacement 3. Troubleshooting and Diagnostics 4. Replaceable Parts 5. Reference Information Part Number F1711-90015 Printed in U.S.A. 1/99]
15

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