Page 2 - Notice
ii HP OmniBook 900 Notice In a continuing effort to improve the quality of our products, technical and environmental informationin this document is subject to change without notice. This manual and any examples contained herein are provided “as is” and are subject to change withoutnotice. Hewlett-Pa...
Page 3 - Contents
HP OmniBook 900 iii Contents 1. Product Information .................................................................................................. 1-1 Features and Operation ................................................................................................................. 1-3 Turn...
Page 4 - Figures
iv HP OmniBook 900 Figures Figure 1-1. OmniBook - Front View ....................................................................................................1-3Figure 1-2. OmniBook - Side View .....................................................................................................1-...
Page 6 - Introduction; Sources of OmniBook Information
vi HP OmniBook 900 Introduction This service manual provides reference information for the HP OmniBook 900. It is intended to beused by HP-authorized service personnel in the installation, servicing, and repair of these products. The manual is designed to be self-contained. It is intended that you c...
Page 7 - Product Information
HP OmniBook 900 Product Information 1-1 1 Product Information The HP OmniBook 900 provides desktop-quality performance and expandability in a highly portableform. It uses high-performance component technologies that make it capable of serving as a desktopcomputer that you can conveniently take anywh...
Page 8 - This chapter describes
1-2 Product Information HP OmniBook 900 Table 1-2. Product Comparisons OmniBook 900 OmniBook 7150 OmniBook 4150 OmniBook 2100 Processor * Intel Pentium III (500or 450 MHz), orPentium II (300 to 400MHz). Pentium II (300 MHz). Pentium II (300 to 400MHz). Pentium II (233 to 300MHz), or Pentium (233or 2...
Page 9 - Features and Operation
HP OmniBook 900 Product Information 1-3 Features and Operation The following three illustrations point out the main external features of the computer. They arefollowed by highlights of the computer’s operation. For an internal, exploded view, see page 4-2. Figure 1-1. OmniBook - Front View Figure 1-...
Page 10 - Turning the OmniBook On and Off; Press the blue power button to turn on the OmniBook.; Off
1-4 Product Information HP OmniBook 900 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 Start, Shut Down, Standby...
Page 11 - Checking the Status of the OmniBook
HP OmniBook 900 Product Information 1-5 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 thedisplay, indicate power status and drive activity. (These lights are on the motherboard.) Table 1-4. Main Status Lights (...
Page 12 - Using Fn Hot Keys; Resetting the OmniBook; –or–; Note
1-6 Product Information HP OmniBook 900 Using Fn Hot Keys The Fn key combined with another key is a hot key—a shortcut key sequence for various systemcontrols. 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...
Page 13 - System Resources
HP OmniBook 900 Product Information 1-7 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 Setu...
Page 15 - Specifications
HP OmniBook 900 Product Information 1-9 Specifications The following tables list descriptions for the OmniBook and its accessories. Table 1-11. OmniBook 900 Specifications Physical Attributes Models with 12-inch displayNotebook size: 11.8 x 8.8 x 1.26 in (30.0 x 22.5 x 3.2 cm).Notebook weight: 4 lb ...
Page 19 - Internal Design
HP OmniBook 900 Product Information 1-13 Internal Design The motherboard PCA is the central component of the OmniBook design. It plays a role in virtuallyall system functions. The CPU module and most other subsystems connect to the motherboard. The following figure shows the connections among the re...
Page 21 - Removal and Replacement; Caution
HP OmniBook 900 Removal and Replacement 2-1 2 Removal and Replacement This chapter tells you how to remove and replace the following components and assemblies. The onesmarked by • are user-replaceable. Table 2-1. Removal Cross-Reference • Battery (page 2-3) Bezel, display (page 2-27) • Bumper, displ...
Page 22 - Notes
2-2 Removal and Replacement HP OmniBook 900 Notes Reassembly steps are the reverse of the removal steps. Reassembly notes are included at theend of each section below. Symbols like this throughout this chapter show approximate full-size screw outlines. You can use them to verify the sizes of screws ...
Page 23 - Removing the Battery; Required Equipment; Slide the battery’s front panel to the right.
HP OmniBook 900 Removal and Replacement 2-3 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
Page 24 - Reassembly Notes
2-4 Removal and Replacement HP OmniBook 900 Reassembly Notes • If you are installing a new battery, first snap the correct panel onto the front of the battery. For a12-inch display, use the flat battery panel—for a 13-inch display, use the curved battery panel. Toremove a panel, slide it open, then ...
Page 25 - Removing a RAM Board; Table 2-4. RAM Board Replacement Part Numbers; Small Phillips screwdriver.; Removal Procedure; Warning; Pull the board out of the connector.
HP OmniBook 900 Removal and Replacement 2-5 Removing a RAM Board (User-Replaceable) Table 2-4. RAM Board Replacement Part Numbers Description Part Number Exchange OmniBook Part Number 900B 900† RAM board, 32MB PC100 SODIMM 1818-7950 • • RAM board, 64MB PC100 SODIMM 1818-7951 F1660-69103 • • RAM boar...
Page 26 - Removing the Hard Disk Drive; Exchange Information
2-6 Removal and Replacement HP OmniBook 900 Figure 2-3. Removing a RAM Board Reassembly Notes • Insert the RAM board into the connector at about a 30° angle until it is fully inserted. Then pressdown at both sides until both latches snap closed. • Fold the keyboard back into place. Slip its front ta...
Page 28 - Important; not; Creating a Hibernate Partition; Connect an external module bay and CD-ROM drive to the OmniBook.
2-8 Removal and Replacement HP OmniBook 900 Reassembly Notes Caution Do not cover the vent hole in the top surface of the hard drive. If you cover the hole, the hard drivecould fail prematurely. • The small plastic tabs on the connector face the top of the drive, and the metal shield fits behindthe ...
Page 29 - Replacing Small Parts; The following small parts are user-replaceable.
HP OmniBook 900 Removal and Replacement 2-9 Replacing Small Parts (User-Replaceable) The following small parts are user-replaceable. Table 2-6. Replacing Small Parts (User-Replaceable) Part Replacement Procedure Battery panel Remove the battery, then twist the upper edge of the panel off the battery...
Page 30 - Removing the LCD Module
2-10 Removal and Replacement HP OmniBook 900 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 attachit to the part—do not use tape. Table 2-7. Display Component Compatibility LCD ...
Page 31 - Remove the four screws holding the LCD module.
HP OmniBook 900 Removal and Replacement 2-11 7. For a 12-inch display, remove the LCD module. a. Remove the four screws holding the LCD module. b. Lift up the right edge of the LCD module about 90°. c. Using a small flat-blade screwdriver, insert the tip under the narrow end of the flex cableconnect...
Page 32 - Removing the Keyboard; Release the pointing stick flex cable from the motherboard.
2-12 Removal and Replacement HP OmniBook 900 Reassembly Notes • For the 12-inch display, make sure the LCD module and flex cable have small foam pads presentto ensure good connections: Two pads on the back of the LCD module on the internal connections near the top-left andbottom-left corners. If a...
Page 34 - Removing the CPU Module
2-14 Removal and Replacement HP OmniBook 900 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 (OmniBook 900† only). • Small flat-blade screwdriver: 4.0-4.5 mm blade (Om...
Page 35 - Caution: OmniBook 900B; Caution: OmniBook 900†
HP OmniBook 900 Removal and Replacement 2-15 Caution: OmniBook 900B Follow these precautions to prevent damage to the CPU connector: • Use only a 4.0-4.5 mm flat-blade screwdriver to release the CPU. • Use only enough force to lock the CPU module. The CPU connector may be damaged if too much force i...
Page 36 - Removing the Display Assembly; Close the display and turn over the computer.
2-16 Removal and Replacement HP OmniBook 900 Caution: OmniBook 900B Follow these precautions while installing the CPU module to prevent damage to the CPUconnector: • Place the CPU module on the connector carefully. Align the arrow on the upper right corner of the CPU module with the matching arrow o...
Page 37 - Figure 2-9. Removing the Display Assembly
HP OmniBook 900 Removal and Replacement 2-17 Figure 2-9. Removing the Display Assembly Reassembly Notes • For a 12-inch display, the flex cable wraps around the post only about 1/2 turn. • For a 12- or 13-inch display, insert the display power wires into the notch in the top case beforeinstalling th...
Page 38 - Removing the Top Case; Remove these additional assemblies:; Unplug the microphone cable from the motherboard near the back.
2-18 Removal and Replacement HP OmniBook 900 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-...
Page 40 - Removing the Motherboard or Bottom Case
2-20 Removal and Replacement HP OmniBook 900 Note For an OmniBook 900 with a 12-inch display and serial number before TW 92500000, if the topcase has been damaged by excessive pressure above the hard disk slot, check whether you mustreplace additional parts: • If the bottom case has a large blue pad...
Page 42 - Note: Installing a New Bottom Case
2-22 Removal and Replacement HP OmniBook 900 Reassembly Notes Note: 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 and keyboard layout electronically in the new mothe...
Page 43 - Storing the Serial Number and Keyboard Layout Electronically; Exit Windows and boot to a DOS prompt.; esn; Store the serial number:; Installing a New Serial Number Label
HP OmniBook 900 Removal and Replacement 2-23 Figure 2-12. Installing PCMCIA Doors Storing the Serial Number and Keyboard Layout Electronically 1. Exit Windows and boot to a DOS prompt. For Windows 95/98, press F8 during reboot and select Command Prompt Only. For Windows NT, boot from a DOS boot ...
Page 44 - Figure 2-13. Example of Serial Number Label; Removing the BIOS IC; Use an IC removal tool to remove the BIOS IC from its socket.
2-24 Removal and Replacement HP OmniBook 900 2. Carefully cut out the new serial label just inside the border and place it into the inner recess in thebottom 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...
Page 45 - Reprogram the IC by programming the BIOS—see the note above.
HP OmniBook 900 Removal and Replacement 2-25 Figure 2-14. Removing the BIOS IC Reassembly Notes Caution • 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 t...
Page 46 - Removing Other Components
2-26 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). • 4.0-4.5 mm flat-blade screwdriv...
Page 48 - Table 2-10. Removing Bottom Case Components
2-28 Removal and Replacement HP OmniBook 900 Table 2-9. Removing Top Case Components Component Removal Procedures Additional Steps (See figure on page 4-2) Case, top See page 2-18. Keyboard See page 2-12. Support, touch-pad Hard drive (page 2-6).Keyboard (page 2-12).Display (page 2-16).Top case (pag...
Page 51 - Troubleshooting and Diagnostics; Troubleshooting information
HP OmniBook 900 Troubleshooting and Diagnostics 3-1 3 Troubleshooting and Diagnostics This chapter includes troubleshooting and diagnostic information for testing the functionality of theOmniBook and identifying faulty modules: • Troubleshooting information Troubleshooting the problem (page 3-2). ...
Page 52 - Troubleshooting; Troubleshooting the Problem; Record pertinent information about the unit:
3-2 Troubleshooting and Diagnostics HP OmniBook 900 Troubleshooting The suggestions in this section can help isolate and repair the cause of a problem. To ensure qualityrepair, HP recommends that you follow the basic troubleshooting steps shown in the illustrationbelow. Figure 3-1. Basic Troubleshoo...
Page 53 - troubleshooting suggestions to help find possible causes.; Verifying the Repair; Basic Diagnostic Test.; –and–
HP OmniBook 900 Troubleshooting and Diagnostics 3-3 • 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 testsmost com...
Page 54 - Suggestions for Troubleshooting
3-4 Troubleshooting and Diagnostics HP OmniBook 900 Suggestions for Troubleshooting Table 3-1. Scope of Diagnostic Tools Function OmniBookDiagnostics Power-OnSelf-Test SycardPCCtest 450 DMI/TopTools(if installed) BIOS Setup Bootup Tests Describes(SafeTools) Configures Processor Tests(System menu) Te...
Page 62 - Diagnostic Tools; OmniBook Diagnostic Program; User-level testing using the basic hardware test.; Figure 3-2. OmniBook Diagnostic Screens — Basic and Advanced
3-12 Troubleshooting and Diagnostics HP OmniBook 900 Diagnostic Tools This section describes the following diagnostic tools you can use for troubleshooting and repairing theOmniBook: • OmniBook hardware diagnostic program (below). • Power-on self-test (page 3-18). • Sycard PCCtest 450 PC Card (page ...
Page 63 - Running the Diagnostic Test
HP OmniBook 900 Troubleshooting and Diagnostics 3-13 Running the Diagnostic Test 1. If you’re using a diagnostic floppy disk, insert it in the floppy drive—or press F10 in the nextstep. 2. Reboot the OmniBook. 3. Go through the first several screens. 4. When the hardware detection finishes, check th...
Page 64 - Figure 3-3. Serial and Parallel Loopback Connectors
3-14 Troubleshooting and Diagnostics HP OmniBook 900 Note that the serial and parallel port tests are more thorough if you connect a loop-back connector tothe port before running the test for that port. See the wiring diagrams below. 14 1 25 13 6 1 9 5 Figure 3-3. Serial and Parallel Loopback Connec...
Page 68 - Press the system-off button to start from a known state.
3-18 Troubleshooting and Diagnostics HP OmniBook 900 Power-On Self-Test Note If Quiet Boot is enabled in BIOS Setup (the default setting), press ESC during boot to see POSTmessages. The POST (Power-On Self-Test) is a series of initialization routines and diagnostic tests that thesystem BIOS runs whe...
Page 71 - Sycard PCCtest 450 CardBus Card (Optional)
HP OmniBook 900 Troubleshooting and Diagnostics 3-21 Sycard PCCtest 450 CardBus Card (Optional) The PCCtest 450 CardBus Card (version 1.05) available from Sycard Technology is an optionaldiagnostic tool. It is the only recommended tool that tests the functionality of the PCMCIA slots usinga PCMCIA c...
Page 72 - Installing the DMI Package; To install the DMI preloaded on the hard disk:; Uninstalling the DMI Package
3-22 Troubleshooting and Diagnostics HP OmniBook 900 Desktop Management Interface (DMI) The Desktop Management Interface (DMI) is an industry-standard program API for accessinginformation about a personal computer. Using DMI, an application program can determine, forexample, which hardware and softw...
Page 73 - Contents of the DMI Package; The following software is supplied with the DMI package:
HP OmniBook 900 Troubleshooting and Diagnostics 3-23 manufacturers, including Hewlett-Packard, to define a standard method of managing the physical andlogical components of personal computers. Hewlett-Packard has developed a number of extensions to DMI to allow the enhanced features of HPOmniBook co...
Page 74 - BIOS Setup Utility; Running the BIOS Setup Utility; During reboot, press F2 to start the BIOS Setup utility.; Table 3-6. BIOS Setup Menus and Parameters
3-24 Troubleshooting and Diagnostics HP OmniBook 900 BIOS Setup Utility The BIOS Setup utility provides access to basic configuration settings. It is independent of theoperating system. Running the BIOS Setup Utility 1. Close all applications, then shut down Windows and reboot the OmniBook. If neces...
Page 77 - Replaceable Parts
HP OmniBook 900 Replaceable Parts 4-1 4 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 4-7) • Accessory replacement parts (page 4-7). • Part number reference (page...
Page 91 - Reference Information; This chapter includes the following reference information:; Password Removal Policy
HP OmniBook 900 Reference Information 5-1 5 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 prop...
Page 92 - Hewlett-Packard Display Quality Statement
5-2 Reference Information HP OmniBook 900 Hewlett-Packard Display Quality Statement TFT display manufacturing is a high precision but imperfect technology and manufacturers cannotcurrently produce large displays that are cosmetically perfect. Most, if not all, TFT displays willexhibit some level of ...
Page 95 - Obsolete Parts; Obsolete repair parts are summarized in the following table.
HP OmniBook 900 Reference Information 5-5 Obsolete Parts Obsolete repair parts are summarized in the following table. Table 5-2. Obsolete Repair Parts ObsoletePart Number NewPart Number Description Comments 1818-7413* 1818-7950* RAM board, 32MB 1818-7414* 1818-7951* RAM board, 64MB 1818-7952* 1818-7...
