HP Omnibook 900 Service Manual

							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 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. 
						

							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 system
controls. For an external keyboard, CTRL+ALT is normally equivalent to the Fn key.
 Table 1-6. Fn Hot Keys
Hot KeyEffect
Fn + F1Decreases 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. Not supported under W indows 2000.
Fn + S Enters Standby mode (W indows 95, W indows NT) or Suspend mode (W indows 98).
Not supported under W indows 2000.
Fn + ScrLk Toggles Scroll Lock on and off.
Fn + UP ARROW
Fn + DOW N ARROWIncreases and decreases the sound volume.
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
 
The OmniBook can boot from a CD if all these conditions are true:
 ·  You have an OmniBook CD-ROM or DVD 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 or DVD 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. 
						

							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 Setup utility (see page 3-24), which lists port and
audio device configurations in the System Devices menu.
 Table 1-7. System Interrupts
0 System timer
1 Keyboard
2 Cascade IRQ 9
3 Free  (or COM2 infrared port, if enabled)
4 COM1 (serial port)
5 Audio
6 Floppy drive
7 LPT1 (ECP parallel port)
8 Real-time clock
9 Free (OmniBook 900B)
Video (OmniBook 900†)
10 USB and CardBus - assigned by W indows driver
Video Controller (OmniBook 900B)
11 Free
12 Pointing device
13 Numeric data processor
14 Internal hard disk (primary IDE controller)
15 Internal CD-ROM drive (secondary IDE controller)
† Models called 900† in this manual have no marking in the serial number,
whereas models called 900B have 900 B after the serial number.
 Table 1-8. System Memory
00000  - 9FFFF System memory
A0000  - BFFFF Video
C0000 - CBFFF
C0000 - CFFFFVideo BIOS (OmniBook 900†)
Video BIOS (OmniBook 900B)
CC000 - DBFFF*
D0000 - DBFFF*Free** (OmniBook 900†)
Free** (OmniBook 900B)
DC000*- FFFFF System BIOS
* Approximate boundary.
** Valid uses for memory addresses CC000-DBFFF or D0000-DBFFF:
Upper memory blocks (UMBs).
PC card memory windows.
† Models called 900† in this manual have no marking in the serial number,
whereas models called 900B have 900 B after the serial number. 
						

							1-8 Product Information HP OmniBook 900
 Table 1-9. System Input/Output Addresses (100-3FF)
120-127Audio (OmniBook 900† only)
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)
† Models called 900† in this manual have no marking in the serial number,
whereas models called 900B have 900 B after the serial number.
 Table 1-10. DMA Channels
0 Sound record (OmniBook 900† only)
Free (OmniBook 900B only)
1 Sound playback
2 Floppy drive
3 LPT1 (ECP parallel port)
4 Cascade
5 Free
6 Free
7 Free
† Models called 900† in this manual have no marking in the serial number,
whereas models called 900B have 900 B after the serial number. 
						

							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 display
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).
Models with 13-inch display
Notebook size: 11.9 x 9.3 x 1.4 in (30.4 x 23.7 x 3.5 cm).
Notebook weight: 4.3 lb (1.9 kg).
Processor and
Bus Architecture500-MHz or 450-MHz Intel Mobile Pentium III processor, or
|400-MHz, 366-MHz or 300-MHz Intel Mobile Pentium II Performance Enhanced (PE)
processor.
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.
Graphics13.3-inch diagonal XGA (1024 x 768) TFT display or 12.1-inch diagonal SVGA (800
x 600) TFT display.
Zoomed Video support for lower PC Card slot.
OmniBook 900†:
256-bit NeoMagic MagicGraph graphics accelerator with 2.5-MB video RAM, 1x AGP
graphics capability.
OmniBook 900B:
ATI Mobility-M graphics accelerator with 4-MB video RAM, 2x AGP graphics
capability.
PowerRechargeable 6-cell lithium ion battery with LED charge-level gauge (11.1 Vdc).
Battery life: up to 3-4 hours typical (varies with type of usage and model).
Fast battery recharge: 80% in 1 hour, 100% in 1.5-2 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 Storage12-GB, 6-GB or 4-GB removable hard drive.
1.44-MB floppy drive module for use in external module bay.
Optional
  CD-ROM drive module.
  LS-120 SuperDisk drive module.
  DVD drive module.
RAM OmniBook 900†:
32-MB RAM built in. One slot for RAM expansion up to 160 MB.
66-MHz RAM bus.
OmniBook 900B:
64-MB RAM built in. One slot for RAM expansion up to 192 MB.
100-MHz RAM bus.
Audio System16-bit Sound Blaster Pro-compatible stereo sound.
Built-in speaker.
3D-enhanced PCI bus audio with Zoomed Video support.
Built-in microphone.
Line-in, headphone-out, and microphone-in.
Keyboard and
Pointing Device87/88-key touch-type QW ERTY keyboard with 101/102 key emulation.
Embedded numeric keypad.
12 function (Fn) keys.
Two pointing devices: pointing stick (TrackPoint technology licensed from IBM) and
touch pad. 
						

							1-10 Product Information HP OmniBook 900
Input/OutputFDD/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, or up to 1600×1200×64K colors
for Omnibook 900B. Refresh rate: 60 to 85 Hz.)
PS/2 keyboard/mouse.
4-Mbps IrDA-compliant infrared port.
ExpandabilityOne 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.
SoftwareMicrosoft W indows 95/W indows 98, or W indows NT 4.0.
W indows 95/W indows 98-compatible Plug-and-Play.
W indows 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.
VirusScan.
Online 
Reference Guide.
OmniBook 
Recovery CD included.
Centralized worldwide BIOS and driver update service
Security FeaturesUser and administrator passwords.
System, hard drive, and docking passwords.
PC identification displayed at boot.
DMI-accessible electronic serial number.
Kensington MicroSaver lock slot.
Environmental LimitsOperating 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 ICsOmniBook 900†:
CPU: Intel Mobile Pentium II Performance Enhanced (PE) 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.
OmniBook 900B:
CPU: Intel Mobile Pentium III processor.
South Bridge: PIIX4M.
Video: ATI Mobility-M.
Audio: ESS ES1978 Maestro-2E and ESS ES1921.
CardBus: TI PCI 1225.
Keyboard controller: National PC87570.
Super I/O: SMC 869.
† Models called 900† in this manual have no marking in the serial number, whereas models called 900B
have 900 B after the serial number. 
						

							HP OmniBook 900 Product Information 1-11
 Table 1-12. OmniBook 900 Accessories
AccessoryDescriptionOmniBookCompatibility
900B900†41502100/7100
Memory
F1456A 32-MB SDRAM (66 MHz) expansion module
·· ·
F1457A 64-MB SDRAM (66 MHz) expansion module
·· ·
F1622A 128-MB SDRAM (66 MHz) expansion module
·· ·
F1456B 32-MB SDRAM (100 MHz) expansion module
·· · ·
F1457B 64-MB SDRAM (100 MHz) expansion module
·· · ·
F1622B 128-MB SDRAM (100 MHz) expansion module
·· · ·
Hard Drives
F1707A 6-GB internal hard disk drive
·
F1744B 12-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
·· ·
F1653A/B DVD drive module
·· ·
F1704A External module bay
··
F1746A/B 10/12-GB second hard drive module
··
Power Options
F1454A 60-watt ac adapter
·· · ·
F1455A 75-watt auto/airline power adapter
·· · ·
F1705A Lithium-ion battery
··
F1706A Battery charger (external)
··
8120-6312
8120-6313
8120-6314
8120-6316
8120-6317
8120-8367
8120-8373
8120-8452
8120-8699Replacement power cord (Australia)
Replacement power cord (U.S., Canada, Taiwan)
Replacement power cord (Europe)
Replacement power cord (Japan)
Replacement power cord (India, South Africa)
Replacement power cord (Argentina)
Replacement power cord (People’s Republic of
China)
Replacement power cord (Chile)
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
·· · ·
F1643A Realport 10/100-Mbps Ethernet + 56-Kbps
modem PC Card by Xircom·· · · 
						

							1-12 Product Information HP OmniBook 900
AccessoryDescriptionOmniBookCompatibility
900B900†41502100/7100
F1761B MPEG DVD decoder PC Card
·· ·
TCM3C589 10-Mbps Ethernet PC Card by 3Com
·· · ·
Docks
F1451A Port replicator (tray: page 4-7)
·· · ·
F1452A Mini dock (tray: page 4-7)
·· · ·
F1453A Monitor stand (short) for F1451A and F1452A
·· · ·
F1468A Docking module bay adapter
·· ·
F1477A Docking system and monitor stand (tall) (tray:
page 4-7)·· · ·
† Models called 900† in this manual have no marking in the serial number, whereas models called 900B
have 900 B after the serial number. 
						

							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 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 1-14—it lists the roles that the replaceable
modules play in each of the functional subsystems.
 
PCMCIA
Cards CPU
Module
Hard Disk
DriveBattery
Keyboard
(pointing stick) RAM
BoardLCD Module
To p C a s e
(microphone)
Motherboard
PCA
BIOS
ICExternal
Module Bay
FanSpeaker
Touch
Pad
PCMCIA
Socket
  Figure 1-4. Replaceable Module Diagram
The power switch and lid
switch are contained on
the motherboard.
All external connections
are made to the
motherboard. 
						

							1-14 Product Information HP OmniBook 900
 Table 1-13. Functional Structure
BootupCPU module
Motherboard
BIOS IC
Floppy disk module
Hard disk driveMain processor.
Primary system circuitry.
Code for basic system functions.
First source of disk-based startup code.
Second source of disk-based startup code.
ProcessorCPU module
MotherboardMain processor, numeric data processor, L1 and L2 cache.
Primary system circuitry.
MemoryMotherboard
RAM boardFirst 32 MB of RAM, video RAM.
Changeable RAM.
PowerBattery
Motherboard
AC adapterPower storage.
AC adapter socket, power switch, lid switch, system-off switch, power
supply, power control circuitry.
AC-to-DC converter.
DisplayMotherboard
LCD moduleDisplay/graphics controller, PCMCIA/zoomed video controller, video
RAM, power converter for backlight.
Display output, backlight.
Hard diskMotherboard
Hard disk driveHard disk controller.
Hard disk mechanism.
Floppy driveMotherboard
Floppy disk moduleFloppy disk controller.
Floppy disk mechanism.
KeyboardMotherboard
BIOS IC
KeyboardKeyboard controller.
Keyboard BIOS.
Key switches.
PointerMotherboard
BIOS IC
Keyboard
Top caseKeyboard controller, pointing stick controller (PS/2 output).
Keyboard BIOS.
Pointing stick sensor.
Touch pad sensor, controller (PS/2 output).
AudioMotherboard
SpeakerAudio controller, audio decoder, speaker amplifier, headphone amplifier,
zoomed video controller, external audio jacks, microphone.
Speaker (mixed left and right channels).
StatusMotherboard Keyboard controller, main LEDs, keyboard LEDs.
SerialMotherboard I/O controller, serial connector.
ParallelMotherboard I/O controller, parallel connector.
InfraredMotherboard I/O controller, infrared transmitter/receiver.
PS/2 portMotherboard Keyboard controller, PS/2 processor, PS/2 connector.
USBMotherboard Bus controller (South Bridge), USB connector.
Docking portMotherboard Docking logic, docking connector.
PCMCIAMotherboard
PCMCIA socketPCMCIA controller.
PCMCIA connectors.