HP Omnibook 900 Service Manual

							®
HP OmniBook 900
Service Manual 
						

							iiHP 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,
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., Crystal Semiconductor Corporation, Phoenix Technologies, Ltd., ATI
Technologies Inc., and NeoMagic, Inc. See the individual programs for additional copyright notices.
Microsoft, MS, MS-DOS, Windows and Windows NT are registered trademarks of Microsoft
Corporation. Pentium and the Intel Inside logo are U.S. registered trademarks and MMX is a U.S.
trademark 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
Edition 2 .................... December 1999 
						

							HP OmniBook 900iii
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............................................................................................................................ 1-13
2. Removal and Replacement ........................................................................................ 2-1
Removing the Battery (User-Replaceable) ................................................................................... 2-3
Removing a RAM Board (User-Replaceable) .............................................................................. 2-5
Removing the Hard Disk Drive (User-Replaceable) .................................................................... 2-6
Replacing Small Parts (User-Replaceable) ................................................................................... 2-9
Removing the LCD Module (HP Authorized Service Providers Only)...................................... 2-10
Removing the Keyboard (HP Authorized Service Providers Only) ........................................... 2-12
Removing the CPU Module (HP Authorized Service Providers Only)...................................... 2-14
Removing the Display Assembly (HP Authorized Service Providers Only) .............................. 2-16
Removing the Top Case (HP Authorized Service Providers Only)............................................ 2-18
Removing the Motherboard or Bottom Case (HP Authorized Service Providers Only) ............ 2-20
Removing the BIOS IC (HP Authorized Service Providers Only) ............................................. 2-24
Removing Other Components (HP Authorized Service Providers Only)................................... 2-26
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 .............................................................................................................3-18
Sycard PCCtest 450 CardBus Card (Optional) .................................................................... 3-21
Desktop Management Interface (DMI) ................................................................................ 3-22
BIOS Setup Utility ............................................................................................................... 3-24
4. Replaceable Parts ....................................................................................................... 4-1
5. Reference Information ............................................................................................... 5-1
Password Removal Policy ............................................................................................................ 5-1
Hewlett-Packard Display Quality Statement ................................................................................ 5-2
Obsolete Parts ............................................................................................................................... 5-5 
						

							ivHP 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 .........................................................................................1-13
Figure 2-1. Removing the Battery ........................................................................................................2-3
Figure 2-2. Installing a Battery Panel ...................................................................................................2-4
Figure 2-3. Removing a RAM Board ...................................................................................................2-6
Figure 2-4. Removing the Hard Disk Drive .........................................................................................2-7
Figure 2-5. Installing a Hard Drive in the Cover ..................................................................................2-7
Figure 2-6. Removing the LCD Module ............................................................................................2-11
Figure 2-7. Removing the Keyboard ..................................................................................................2-13
Figure 2-8. Removing the CPU Module.............................................................................................2-15
Figure 2-9. Removing the Display Assembly.....................................................................................2-17
Figure 2-10. Removing the Top Case.................................................................................................2-19
Figure 2-11. Removing the Motherboard ...........................................................................................2-21
Figure 2-12. Installing PCMCIA Doors .............................................................................................2-23
Figure 2-13. Example of Serial Number Label ..................................................................................2-24
Figure 2-14. Removing the BIOS IC ..................................................................................................2-25
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 ..........................................................................................................4-6
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 ........................................................................................................1-14
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............................................................................2-5
Table 2-5. Hard Disk Drive Replacement Part Numbers .....................................................................2-6
Table 2-6. Replacing Small Parts (User-Replaceable) .........................................................................2-9
Table 2-7. Display Component Compatibility....................................................................................2-10
Table 2-8. Removing Display Components .......................................................................................2-27
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 
						

							HP OmniBook 900v
Table 3-4. POST Terminal-Error Beep Codes .................................................................................. 3-18
Table 3-5. POST Messages ............................................................................................................... 3-18
Table 3-6. BIOS Setup Menus and Parameters ................................................................................. 3-24
Table 4-1. OmniBook Replaceable Parts ............................................................................................ 4-3
Table 4-2. Assembly-Component Breakdown..................................................................................... 4-7
Table 4-3. Accessory Replaceable Parts.............................................................................................. 4-7
Table 4-4. Part Number Reference ...................................................................................................... 4-9
Table 5-1. OmniBook 900 LCD Guidelines (TFT) ............................................................................. 5-3
Table 5-2. Obsolete Repair Parts ......................................................................................................... 5-5 
						

							viHP 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 to be 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
SourceAddress or NumberComments
HP External W eb http://www.hp.com/omnibook
(http://www.europe.hp.com/omnibook,
European mirror)No usage restriction.
HP US Reseller W eb http://partner.americas.hp.com Restricted to Authorized Resellers
only.
HP Asia Pacific Channel
Support Centre for DPSP
Partnershttp://www.hp.com.au Restricted to DPSP Partners only.
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 Support Assist CD-ROM (800) 457-1762 US and Canada.
(801) 431-1587 Outside US and Canada.
Microsoft W eb http://www.microsoft.com Information and updates for W indows
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 **DisplayHard DriveFloppy DriveCD-ROM
Drive
Standard
RAM
F1711xPentium II
300 MHz12.1-inch
SVGA TFT4 GB
(none)1.44 MB
(F1472A)None 32 MB
F1712xPentium II
366 MHz6 GB
(F1707A)
F1760xPentium II
400 MHz
F1765x96 MB
(F1457A)
F1769xBPentium III
450 MHz64 MB
F1770xBPentium III
500 MHz13.3-inch
XGA TFT12 GB
(F1744B)
This table lists only base product configurations—custom configurations are not included.
* For the products listed:

x suffix means
N, NT, “NV”, or “NG” for W indows NT 4.0 installed (marketing distinction only), or
W , W T, “W V”“W G”, or “W R” for W indows 95/98 installed (marketing distinction only).
** Intel Mobile Pentium II or Mobile Pentium III processor.
BThe OmniBook 900 Series has two classes of products with different internal designs, different software
drivers, and different BIOSes. Models marked with B have “900 B” after the serial number and are called
900B in this manual—other OmniBook 900 models listed in this table are called 900† in this manual, and
they have no marking after the serial number. 
						

							1-2 Product Information HP OmniBook 900
 Table 1-2. Product Comparisons
OmniBook 900OmniBook 7150OmniBook 4150OmniBook 2100
Processor *Intel Pentium III (500
or 450 MHz), or
Pentium II (300 to 400
MHz).Pentium II (300 MHz). Pentium II (300 to 400
MHz).Pentium II (233 to 300
MHz), or Pentium (233
or 200 MHz).
Memory64 or 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.
Display13.3-inch TFT XGA
display, or 12.1-inch
TFT SVGA display.14.1-inch TFT XGA
display.13.3- or 14.1-inch TFT
XGA display.13.3-inch TFT XGA
display, or 12.1-inch
TFT or DSTN SVGA
display.
VideoAGP video.
256-bit graphics
controller with 4 or
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 or PCI local bus
video.
256-bit graphics
controller with 8, 4, or
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
SystemW indows 95,
W indows 98, or
W indows NT 4.0
preinstalled.W indows 95,
W indows 98, or
W indows NT 4.0
preinstalled.W indows 95,
W indows 98, or
W indows NT 4.0
preinstalled.W indows 95,
W indows 98, or
W indows NT 4.0
preinstalled.
Desktop
Management
InterfaceDMI 2.0.
HP TopTools 3.0 to
4.5.DMI 2.0.
HP TopTools 3.0.DMI 2.0.
HP TopTools 3.0 to
4.5.DMI 2.0.
HP TopTools 2.6 or
3.0.
Power
ManagementAPM 1.2.
ACPI compliant.APM 1.2.
ACPI compliant.APM 1.2.
ACPI compliant.APM 1.2.
ACPI compliant.
Power StatesOn, Standby, Suspend,
Hibernate, Off.On, Standby, Suspend,
Hibernate, Off.On, Standby, Suspend,
Hibernate, Off.On, Standby, Suspend,
Hibernate, Off.
* Intel Mobile Pentium, Mobile Pentium II, or Mobile Pentium III processor.
This chapter describes
 · Features and operation (below).
 · Specifications (page 1-9).
 · Internal design (page 1-13). 
						

							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 slotParallel
port
Pointing stick
Serial
port
Touch pad
Video
outDocking
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 Start, Shut Down, Standby (Windows 98 or
2000), 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 ModeTo Enter ModeTo 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 W indows 98
or 2000)
–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 (W indows 98 or
2000)
–or–
click Start, Suspend (W indows
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.