Page 2 - Notice
ii HP OmniBook 4100 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-P...
Page 3 - Contents
HP OmniBook 4100 iii Contents 1. Product Information .................................................................................................. 1-1 Features and Operation.................................................................................................................. 1-2 Tur...
Page 4 - Figures
iv HP OmniBook 4100 Figures Figure 1-1. OmniBook - Front View.................................................................................................... 1-2Figure 1-2. OmniBook - Side View ............................................................................................... .........
Page 6 - Introduction
vi HP OmniBook 4100 Introduction This service manual provides reference information for the HP OmniBook 4100. It is intended to beused by HP-authorized service personnel in the installation, servicing, and repair of these products. The manual is designed as a self-paced guide. It is intended to trai...
Page 7 - Product Information; This chapter describes
HP OmniBook 4100 Product Information 1-1 1 Product Information The HP OmniBook 4100 provides desktop performance and expandability as well as convenientportability. It uses high-performance component technologies that make it capable of replacing adesktop computer or serving as a portable multimedia...
Page 8 - Features and Operation
1-2 Product Information HP OmniBook 4100 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.
1-4 Product Information HP OmniBook 4100 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 but...
Page 11 - Checking the Status of the OmniBook
HP OmniBook 4100 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 LED strip cable.) Table 1-4. Main Status Lig...
Page 12 - Using Fn Hot Keys; Resetting the OmniBook; –or–
1-6 Product Information HP OmniBook 4100 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 displa...
Page 13 - System Resources
HP OmniBook 4100 Product Information 1-7 System Resources Below are default values for system resources. To see other, non-default possibilities, use the BIOSSetup utility (see page 3-23), which lists port and audio device configurations in the System Devicesmenu. The tables in this section show typ...
Page 15 - Specifications
HP OmniBook 4100 Product Information 1-9 Specifications The following tables list descriptions for the OmniBook and its accessories. Table 1-11. OmniBook 4100 Specifications Physical Attributes Size: 330.5mm×256.9mm×35-36.5mm (13.0"×10.1"×1.3-1.4").Weight: 2.92 kg (6.45 lb). Processor an...
Page 18 - Internal Design
1-12 Product Information HP OmniBook 4100 Internal Design The motherboard PCA is the central component of the OmniBook design. It plays a role in virtuallyall system functions. The CPU module (MMO) and most other subsystems connect to themotherboard. The following figure shows the connections among ...
Page 21 - Removal and Replacement; Keyboard; Caution
HP OmniBook 4100 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 Air vent cover (table on page 2-23). Audio jack cover (table o...
Page 23 - Removing the Battery or Plug-In Module; to loosen the module.
HP OmniBook 4100 Removal and Replacement 2-3 Removing the Battery or Plug-In Module (User-Replaceable) Required Equipment • None. Removal Procedure 1. Unplug the ac adapter, if present. 2. Slide forward the module latch slider on the corner next to the module, then swing back the latch to loosen the...
Page 24 - Removing a RAM Board; Small Phillips screwdriver.; Pull the board out of the connector.
2-4 Removal and Replacement HP OmniBook 4100 Removing a RAM Board (User-Replaceable) Table 2-4. RAM Board Replacement Part Numbers Description Part Number ExchangePart Number RAM board, 32-MB 1818-7413 F1456-69100 RAM board, 64-MB 1818-7414 F1457-69100 Caution Handle the RAM board only by its edges ...
Page 25 - Removing the Hard Disk Drive; Remove the hard drive screw from the bottom case.
HP OmniBook 4100 Removal and Replacement 2-5 Removing the Hard Disk Drive (User-Replaceable) Table 2-5. Hard Disk Drive Replacement Part Numbers Description Part Number ExchangePart Number Drive, hard disk (4.0GB, IBM) 0950-2671 F1386-69100 Drive, hard disk (4.0GB, Toshiba) 0950-2865 F1386-69101 Dri...
Page 26 - you are repairing, create a Support Utility floppy disk now.; from the
2-6 Removal and Replacement HP OmniBook 4100 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. • Pry out the connector corner of the ca...
Page 27 - Replacing Small Parts; The following small parts are user-replaceable.
HP OmniBook 4100 Removal and Replacement 2-7 3. Reboot the computer. If you are using the Recovery CD, press ESC during reboot to cancel the OmniBook screen, ESC to display the boot-device menu, then select the CD-ROM drive as theboot device. 4. When prompted, select “Create Hibernate Partition.” We...
Page 28 - Removing the Keyboard; display. Be careful not to scratch the display or pull on the cables.
2-8 Removal and Replacement HP OmniBook 4100 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. On the bottom of the unit, remove the sev...
Page 30 - Removing the Display Assembly; Remove the screw above the VGA port.
2-10 Removal and Replacement HP OmniBook 4100 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. On the back of the unit, lift up on the VGA connector...
Page 31 - Removing the LCD Module
HP OmniBook 4100 Removal and Replacement 2-11 Reassembly Notes Caution Install new screws for all screws you remove that hold the display hinges. Otherwise, the hingescould loosen over time. Hint • While attaching the LCD flex cable to the LVDS PCA, rest one corner of the display on thebottom case. ...
Page 32 - display case. Remove the combined hinges and strip cover.
2-12 Removal and Replacement HP OmniBook 4100 6. Remove the two screws holding the LCD brackets and hinges near the bottom corners of the display case. Remove the combined hinges and strip cover. 7. On the plastic cable holder, unsnap the cover. 8. If present, unplug the flex cable that wraps around...
Page 33 - Install the inverter PCA under the main LCD flex cable.
HP OmniBook 4100 Removal and Replacement 2-13 Figure 2-7. Removing the Display Reassembly Notes Caution • Be sure to replace the LCD module or other display components with compatible parts.Components may be damaged if compatible parts are not used. See the table on page 2-11. • Install new screws f...
Page 34 - Removing the Top Case
2-14 Removal and Replacement HP OmniBook 4100 • The extra length of LCD wires connecting to the inverter PCA is folded back along the PCA. • Snap in the end caps after the display is assembled. Caution At the lower-right corner of the LCD module, be careful the wires are not pinched where they passn...
Page 36 - Removing the Motherboard or Bottom Case
2-16 Removal and Replacement HP OmniBook 4100 Removing the Motherboard or Bottom Case (HP Authorized Service Providers Only) Required Equipment • Small Phillips screwdriver. • 5-mm hex driver (or 3/16 inch). Removal Procedure 1. Unplug the ac adapter, if present, and remove the battery. 2. Remove th...
Page 39 - Exit Windows and boot to a DOS prompt.; at the
HP OmniBook 4100 Removal and Replacement 2-19 Figure 2-10. Installing Docking Doors and Module Latch Figure 2-11. Positioning Thermal Pads 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...
Page 40 - and protects the serial label.; Removing the BIOS IC
2-20 Removal and Replacement HP OmniBook 4100 3. While holding the paper label in place, attach a serial label overlay into the outer recess. It covers and protects the serial label. Removing the BIOS IC (HP Authorized Service Providers Only) Note A replacement BIOS IC contains only enough basic pro...
Page 41 - Reprogram the IC by programming the BIOS—see the note above.; Removing Other Components; Components are separated into these groups:
HP OmniBook 4100 Removal and Replacement 2-21 Reassembly Notes Caution • Replace the BIOS IC with one that is compatible with the CPU module—see the table on page4-3. • Align the IC with the slot in the socket. The IC is keyed to fit correctly. If you insert the ICbackward, the IC or motherboard cou...
Page 47 - Troubleshooting and Diagnostics; Troubleshooting information
HP OmniBook 4100 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 48 - Troubleshooting; Troubleshooting the Problem; Record pertinent information about the unit:
3-2 Troubleshooting and Diagnostics HP OmniBook 4100 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 Troublesho...
Page 49 - troubleshooting suggestions to help find possible causes.; Verifying the Repair; –and–
HP OmniBook 4100 Troubleshooting and Diagnostics 3-3 • Separate Problems. If there is more than one symptom, separate them into distinct problems. • Consider Causes. Keep in mind possible causes for each problem. Use the diagnostic tools and troubleshooting suggestions to help find possible causes. ...
Page 50 - Suggestions for Troubleshooting
3-4 Troubleshooting and Diagnostics HP OmniBook 4100 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) T...
Page 58 - Diagnostic Tools; OmniBook Diagnostic Program; User-level testing using the basic hardware test.; On an OmniBook with a factory software installation, run; On any computer with a CD-ROM drive, run; directory on the OmniBook 4100 Recovery CD.
3-12 Troubleshooting and Diagnostics HP OmniBook 4100 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 3-17). • Sycard PCCtest 450 PC Card (page...
Page 63 - Press the system-off button to start from a known state.
HP OmniBook 4100 Troubleshooting and Diagnostics 3-17 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 wh...
Page 66 - Sycard PCCtest 450 CardBus Card (Optional)
3-20 Troubleshooting and Diagnostics HP OmniBook 4100 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. It isa Type I...
Page 67 - To install the DMI preloaded on the hard disk:
HP OmniBook 4100 Troubleshooting and Diagnostics 3-21 Desktop Management Interface (DMI) The Desktop Management Interface (DMI) is basically a set of rules for accessing information about apersonal computer. Using DMI, an application program can determine, for example, which hardwareand software com...
Page 68 - The following software is supplied with the DMI package:
3-22 Troubleshooting and Diagnostics HP OmniBook 4100 Hewlett-Packard has developed a number of extensions to DMI to allow the enhanced features of HPOmniBook computer to be managed with DMI, including features such as passwords and tattooing(identifying a computer using a unique string of character...
Page 69 - BIOS Setup Utility; During reboot, press F2 to start the BIOS Setup utility.
HP OmniBook 4100 Troubleshooting and Diagnostics 3-23 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 nece...
Page 73 - Replaceable Parts
HP OmniBook 4100 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 4-2). • Assembly-component breakout (page 4-7) • Accessory replacement parts (page 4-7). • Part number reference (pag...
Page 83 - Reference Information; This chapter includes the following reference information:; Password Removal Policy
HP OmniBook 4100 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 pro...
Page 84 - Hewlett-Packard Display Quality Statement
5-2 Reference Information HP OmniBook 4100 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...
