HP Omnibook 4100 4150 Service Manual

HP OmniBook 4100/4150 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 LED strip cable.)
 Table 1-4. Main Status Lights (LED Strip Cable)
           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...

1-6 Product Information HP OmniBook 4100/4150
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 + F3 Decreases the display’s contrast (non-TFT displays only).
Fn + F4 Increases the display’s contrast (non-TFT displays only).
Fn + F5...

HP OmniBook 4100/4150 Product Information 1-7
System Resources
Below are default values for system resources. To see other, non-default possibilities, use the BIOS
Setup utility (see page 3-26), which lists port and audio device configurations in the System Devices
menu.
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.
 Table 1-7. System Interrupts
0 System timer
1...

1-8 Product Information HP OmniBook 4100/4150
 Table 1-9. System Input/Output Addresses (100-3FF)
120-127Audio (OmniBook 4150† 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 VGA adapter
3C0-3DF VGA adapter
3E0-3E1 PCMCIA controller
3F0-3F5 Floppy controller
3F6 Internal hard disk (primary IDE controller)
3F7 Floppy...

HP OmniBook 4100/4150 Product Information 1-9
Specifications
The following tables list descriptions for the OmniBook and its accessories.
 Table 1-11. OmniBook 4100/4150 Series Specifications
Physical AttributesSize: 330.5mm×256.9mm×35-36.5mm (13.0×10.1×1.3-1.4).
W eight: 2.92-2.99 kg (6.45-6.60 lb.).
Processor and
Bus Architecture300/333/366/400 MHz Pentium II processor with internal 256 KB 4-way, set-
associative L2 cache.
–or–
233/266/300-MHz Intel Pentium II, or 266-MHz Intel Pentium processor with...

1-10 Product Information HP OmniBook 4100/4150
Audio System16-bit, Sound Blaster Pro-compatible.
SRS 3D enhanced audio.
Stereo sound via two built-in speakers.
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 (technology licensed from IBM) and touch pad.
Input/OutputFDD/IDE interface for external module bay....

HP OmniBook 4100/4150 Product Information 1-11
Major ICs OmniBook 4150B:
CPU: Intel Mobile Pentium II.
South Bridge: PIIX4M.
Video: ATI Mobility-M or -M1.
Audio: ESS ES1978 Maestro-2E and ESS ES1921.
CardBus: TI PCI 1225.
Keyboard controller: National PC87570.
Super I/O: SMC 869.
OmniBook 4150†:
CPU: Intel Mobile Pentium II.
South Bridge: PIIX4E.
Video: NeoMagic MagicGraph NM2200 (NMG5).
Audio: NeoMagic MagicGraph NM2200 (NMG5) and NeoMagic Audio MNA2.
CardBus: TI PCI1220A.
Keyboard controller: National...

1-12 Product Information HP OmniBook 4100/4150
 Table 1-12. OmniBook 4100/4150 Series Accessories
AccessoryDescriptionOmniBookCompat.
4150B4150†41002100/7100
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
F1467A 4-GB internal...

HP OmniBook 4100/4150 Product Information 1-13
Docks
F1451A Port replicator··· ·
F1452A Mini dock··· ·
F1453A Monitor stand (short) for F1451A and F1452A··· ·
F1468A Docking module bay adapter···
F1477A Docking system and monitor stand (tall)··· ·
† Models called 4150† in this manual have no marking in the serial number, whereas models called 4150B
have 4150 B after the serial number. 

1-14 Product Information HP OmniBook 4100/4150
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 (MMO) 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 1-15—it lists the roles that the replaceable
modules play in each of the functional subsystems....