HP HP OmniBook 900 User manual

®
HP OmniBook 900
Service Manual

ii HP OmniBook 900
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,
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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

HP OmniBook 900 iii
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

iv HP OmniBook 900
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

HP OmniBook 900 v
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

vi HP OmniBook 900
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
(http://www.europe.hp.com/omnibook,
European mirror)
No usage restriction.
HP US Reseller Web http://partner.americas.hp.com Restricted to Authorized Resellers
only.
HP Asia Pacific Channel
Support Centre for DPSP
Partners
http://www.hp.com.au Restricted to DPSP Partners only.
America Online Keyword: HP Call [phone] for membership
within the US.
CompuServe GO HP Call [phone] 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) [phone] US and Canada.
[phone] Outside US and Canada.
[phone] Reseller support number (enter outlet
id number).
HP Support Assist CD-ROM [phone] US and Canada.
[phone] Outside US and Canada.
Microsoft Web http://www.microsoft.com Information and updates for Windows
operating systems.

HP OmniBook 900 Product Information 1-1
1
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
Product * CPU ** Display Hard Drive Floppy Drive CD-ROM Drive Standard RAM
F1711 x Pentium II
300 MHz 12.1-inch SVGA TFT 4.3 GB (none) 1.44 MB (F1472A) None 32 MB
F1712 x Pentium II
366 MHz 6.4 GB (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.

1-2 Product Information HP OmniBook 900
Table 1-2. Product Comparisons
OmniBook 900 OmniBook 7150 OmniBook 4150 OmniBook 2100
Processor * Intel Pentium II (366 or
300(PE) MHz). Intel Pentium II (300 MHz). Intel Pentium II (366, 333, or 300 MHz). Pentium II (300, 266, or 233 MHz), or
Pentium (233 or 200
MHz).
Memory 32 MB RAM on
motherboard.
Expandable to
160 MB.
64 MB RAM in system
slot.
Expandable to
320 MB.
128 or 64 MB RAM in
slot.
Expandable to
256 MB.
32 MB RAM on
motherboard.
Expandable to 160,
192, or 288 MB.
Display 12.1-inch TFT SVGA
display. 14.1-inch TFT XGA display. 14.1-inch TFT XGA display. 13.3-inch TFT XGA display, or 12.1-inch
TFT or DSTN SVGA
display.
Video AGP video.
256-bit graphics
controller with 2.5 MB
internal video RAM.
Up to 16M colors
(XGA).
Zoomed Video
enabled.
AGP video.
64-bit graphics
controller with 4 MB
external video RAM,
3D graphics
acceleration.
Up to 16M colors
(XGA).
Zoomed Video
enabled.
AGP video.
256-bit graphics
controller with 2.5 MB
internal video RAM.
Up to 16M colors
(XGA).
Zoomed Video
enabled.
PCI local bus video.
128-bit graphics
controller with 2 MB
internal video RAM.
Up to 64K colors
(XGA), 16M colors
(SVGA).
Zoomed Video
enabled.
Operating
System Windows 95,
Windows 98, or
Windows NT 4.0
preinstalled.
Windows 95,
Windows 98, or
Windows NT 4.0
preinstalled.
Windows 95,
Windows 98, or
Windows NT 4.0
preinstalled.
Windows 95,
Windows 98, or
Windows NT 4.0
preinstalled.
Desktop
Management
Interface
DMI 2.0.
HP TopTools 3.0. DMI 2.0. HP TopTools 3.0. DMI 2.0. HP TopTools 3.0. DMI 2.0. HP TopTools 2.6 or
3.0.
Power
Management APM 1.2.
ACPI compliant. APM 1.2. ACPI compliant. APM 1.2. ACPI compliant. APM 1.2. ACPI compliant.
Power States On, Standby, Suspend,
Hibernate, Off. On, Standby, Suspend, Hibernate, Off. On, Standby, Suspend, Hibernate, Off. On, Standby, Suspend, 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).

HP OmniBook 900 Product Information 1-3
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.
Figure 1-1. OmniBook - Front View
Figure 1-2. OmniBook - Side View
Figure 1-3. OmniBook - Rear View
Infrared port
Audio jacks
Microphone
Keyboard status lights
Power button
Kensington
lock slot
Parallel
port
Pointing stick
Serial
port
Touch pad
Video
out Docking port
Click buttons
(above and below
the touch pad) PC Card slots
PC Card eject buttons
Latch
PS/2 port
USB
port
System-off button Speaker
Battery
External module bay connector
AC adapter socket
Main status lights
Kensington
lock slot
Hard disk drive

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 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
Reduced-power/stopped state. Display is off.
Everything is in a reduced-power state. Network
devices are maintained. Your current work session
continues at turn-on (any key or pointer action).
Press Fn+S (not Windows 98)
–or–
allow time-out.
Press any key or move
a pointing device to
display the current
session ("Instant-On").
Suspend
Low-power/stopped state. Lower power state than
Standby. Everything is off or in a low-power state.
Network devices are off. Your previous work session
resumes at turn-on. For plug-and-play operating
systems, network connections resume at turn-on.
Press blue power button for
about 1 second
–or–
click Start, Shut Down,
Standby (Windows 98)
–or–
click Start, Suspend (Windows
95)
–or–
allow time-out.
Press blue power
button to display the
current session
("Instant-On").
Hibernate
No-power/stopped state. Session is saved on the
hard disk. Everything is shut down. Computer
reboots at turn-on and restores previous session
and network connections (if plug-and-play).
Press Fn+F12
–or–
allow time-out.
Press blue power
button to restart and
restore the previous
session.
Off
No-power/stopped state. Everything is shut down
(battery continues charging if ac adapter is
connected). Computer reboots at turn-on and
restores network connections.
Click Start, Shut Down
–or–
Press and hold the blue power
button until the display shuts
down.
Press blue power
button to restart with a
new session.