Hp OmniBook 4000C, OmniBook 4000CT Familiarization Guide

HP OmniBook 4000C/CT

Familiarization Guide

This guide is for experienced HP
Response Center personnel, CEs, and
reseller technicians, such as personnel
who have already completed the HP
Vectra PC family training course, or
equivalent, and have at least six months of
experience servicing the HP Vectra PCs.

It is a self-paced guide designed to train
you to install, configure, and repair the
OmniBook Notebook PC. You can follow
it without having any equipment available.

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.

Last revision date: 09/10/96 8:47 PM
Hewlett-Packard makes no warranty of any kind with regard to this

material, including, but not limited to, the implied warranties of
merchantability and fitness for a particular purpose. Hewlett­Packard shall not be liable for errors contained herein or for
incidental or consequential damages in connection with the
furnishing, performance, or use of this material.

Hewlett-Packard assumes no responsibility for the use or reliability
of its software on equipment that is not furnished by Hewlett­Packard.

As an ENERGY STAR partner, HP has determined that these
products meet the ENERGY STAR guidelines for energy efficiency.

All Certifications may not be completed at product introduction.
Please 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.

ENERGY STAR is a service mark of the U.S. Environmental
Protection Agency. IBM and OS/2 are registered trademarks of
International Business Machines Corporation. Pentium and the
Intel Inside logo are registered trademarks of Intel Corporation.
Photo CD is a registered trademark of Kodak Corporation.
Microsoft, MS-DOS, and Windows are registered trademarks, and
the Genuine Microsoft Products logo is a trademark of Microsoft
Corporation in the United States of America and in other countries.
Sound Blaster is a trademark of Creative Technology Ltd.

 Hewlett-Packard Company 1996.
All Rights Reserved. Reproduction, adaptation, or translation

without prior written permission is prohibited except as allowed
under copyright laws.

Printed in U.S.A.
F1081-90051

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2

Table of Contents

Table of Figures.................................................................................................5

OmniBook Product Comparisons .......................................................................6

Size Closed...................................................................................................6

Weight..........................................................................................................6

OmniBook 4000 Series: Product Features........................................................10

Description..................................................................................................10

Models........................................................................................................10

Accessories.................................................................................................11

What comes in the box ...............................................................................11

Microprocessor............................................................................................11

Bus Architecture..........................................................................................11

Memory.......................................................................................................12

Mass storage...............................................................................................12

Flexible disk drive.......................................................................................12

Built-in I/O...................................................................................................12

Display/video ..............................................................................................13

TFT Display Quality ....................................................................................13

User interface..............................................................................................14

Power..........................................................................................................14

External battery charger..............................................................................15

Automobile adapter.....................................................................................15

NiMH battery pack.......................................................................................15

AC adapter..................................................................................................15

Accessory Slots...........................................................................................15

Audio Systems............................................................................................15

Operating environment................................................................................16

Storage environment...................................................................................16

Environmental Testing ................................................................................16

BIOS...........................................................................................................16

Software and Operating System ..................................................................16

Supported Operating Systems.....................................................................17

Security.......................................................................................................17

Password Decode .......................................................................................17

Password Decode Policy.............................................................................18

Notebook Hardware Structure ..........................................................................19

Field Replaceable Assemblies.....................................................................19

Installing memory (End User Replaceable)..................................................19

Battery Module and Floppy Disk Drive Module (End User Replaceable)......20

Hard Disk Drive (End User Replaceable).....................................................21

Small parts (End User Replaceable)............................................................22

Icon Assembly and Display Module (HP Authorized Support Providers Only)23
Palm Rest Assembly and Track Ball Assembly (HP Authorized Support

Providers Only)...........................................................................................26

Keyboard Assembly (HP Authorized Support Providers Only) .....................28

Power Board (PCA Assy PK-DC) (HP Authorized Support Providers Only) .30
Upper Case, Sound Board (PCB Assy PK-688/PK-AUD), and PCA Display

Connect PK-LSP (HP Authorized Support Providers Only)..........................31

Keyboard Grounding Plate, CPU, and System Board (HP Authorized Service

Providers Only)...........................................................................................33

Enhanced Port Replicator (Exchange Assembly).........................................35

Troubleshooting Tips: ..................................................................................35

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3

Configuration and Setup...................................................................................36

Main Configuration Screen..........................................................................36

Power Screen..............................................................................................37

Power Configuration....................................................................................38

Power Conservation Mode ..........................................................................38

Power Defaults............................................................................................39

System Configuration ..................................................................................40

Input/Output Configuration..........................................................................41

Printer port..................................................................................................41

Disk Configuration.......................................................................................42

Audio Configuration.....................................................................................43

Troubleshooting and Repair .............................................................................44

Known Hardware Issues..............................................................................44

OmniBook Self-Test ....................................................................................44

First POST: BEEP CODES........................................................................44

Last POST: DISPLAY CODES...................................................................47

PhoenixBIOS POST Messages (Power On Self Test) .................................47

Appendix A: Part Numbers...............................................................................50

Appendix B: Additional Resources....................................................................52

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4

Table of Figures

Figure 1 - Memory Doors, Modules, and Slots ..............................................................19

Figure 2 - Floppy Drive and Battery..............................................................................20

Figure 3 - Hard Disk Drive............................................................................................21

Figure 4 - Display Screws.............................................................................................23

Figure 5 - Icon Assembly..............................................................................................24

Figure 6 - Display Removal ..........................................................................................25

Figure 7 - Lower Case Screws......................................................................................26

Figure 8 - Palm Rest and Track Ball Assemblies ..........................................................27

Figure 9 - Keyboard and Sound Board..........................................................................29

Figure 10 - Upper Case and Display Connect ...............................................................32

Figure 11 - System Board and Keyboard Grounding Plate............................................34

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5

OmniBook Product Comparisons

HP OmniBook 5000 HP OmniBook 4000 HP OmniBook 600

Size Closed

Weight

Processor

Bus Architecture
Cache

Display

29.5 x 22.6 x 4.9 cm

(11.6 x 8.9 x 1.93 in)

3.08-3.18 kg (6.8-7 lb) DSTN (C)

75-, 90-, or 120-MHz
Intel Pentium
processor

32-bit PCI bus ISA bus ISA bus
some models include:

256-KB external L2
cache

10.4-inch diagonal:
VGA (C/CT): 640 x

480 x 65,536 colors
(DSTN or TFT)

SVGA (CTS): 800 x
600 x 256 colors
(TFT)

PCI local bus video;

1.5-MB video RAM
SVGA-out supports

VGA & SVGA monitors
(up to 1024 x 768 x
256 colors)

®

29.5 x 22.6 x 4.9 cm
(11.6 x 8.9 x 1.93 in)

3.13 kg (6.9 lb)

TFT (CT):

3.27 kg (7.2 lb)

50-Mhz Intel 486DX2,
or 75-, 100-MHz Intel
486DX4

No L2 cache No L2 cache

10.3-diagonal DSTN
(up to 256 colors) or

10.4-inch diagonal TFT
(up to 65,536 colors)

VGA: 640 x 480
Local bus video; 1-MB

display RAM
SVGA-out supports

VGA & SVGA monitors
(up to 1024 x 768 x
256 colors)

18.49 × 28.24 × 3.99 cm
(7.28 × 11.12 × 1.57 in)

1.72 kg (3.8 lb)

50- or 75-MHz Intel
486DX2

8.6-diagonal DSTN or

9.5-inch diagonal TFT
640×480 backlit color

VGA displays
64K colors from a 262K

color palette
VGA-out supports VGA

and SVGA monitors (up
to 1024×768×256 colors)

Accelerated local bus
video with 1-MB VRAM

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6

Power

14.4Vdc Rechargeable
Lithium-Ion or NiMH
battery

Battery life
(approximate with one
battery): 2 to 3 hrs

Battery recharges to
high level in 4 hrs
using AC adapter while
PC is on or off

2-minute low-battery
warning

AC adapter 100 to 240
Vac (50 to 60 Hz)
input; 12 Vdc, 3.3 A
output

Instant-on maintains
computer in ready-to­work state for weeks
on a full charge;
returns you to your
application or file
instantly

14.4 Vdc rechargeable
NiMH battery pack

Battery life
(approximate):

3-4 hrs on DSTN
DX2/50

2-3 hrs on TFT
DX4/100
AC adapter 100 to 240
Vac (50 to 60 Hz)
input; 21 Vdc,1.35 A
output

Suspend-resume
power management.

9.6 Vdc rechargeable
NiMH or Lithium Ion
battery

Battery life up to 3.0-3.5
hours.

Battery pack recharges
to high level in less than
2 hours using AC
adapter

2-minute (or less) low­battery warning

AC adapter 100 to 240
Vac (50 to 60 Hz) input;
12 Vdc, 2.5 A output

Instant-on maintains
computer in ready-to­work state for months on
a charge. Turn it on
again, and you’re
instantly back where you
were.

Removable Modules

Mass Storage

RAM

Floppy disk drive (can
be replaced with a
second battery for
double battery life)

Hard disk drive
RAM
Battery
540-MB, 810-MB, or

1.2-GB hard disks

8- or 16-MB Models
upgradable to 64 MB
8-, 16-, or 32-MB RAM

cards

Floppy disk drive (can
be replaced with a
second battery for
double battery life)

Hard disk drive
RAM
Battery
260-, 340-, 520-, or

810-MB hard disk
options

4-, 8-MB, or 16-MB
RAM models

upgradable to 32 MB

Hard disk drive
RAM
Battery

170, 260, or 340 MB
hard disk drive

4-, 8-, 16- or 24-MB
RAM models

upgradable to 32MB
(CT) 20MB or 24MB (C).

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7

Audio

16-bit with Sound
Blaster® and MIDI
support

Stereo sound via two
built-in speakers

16-bit, Sound Blaster­compatible

Stereo sound via two
built-in stereo speakers

Microsoft® Windows
sound in CT.

Two built-in speakers
(not stereo sound)

®

Input/Output

9-pin, 115,200 - b/s,
RS-232 port

25-pin EPP and ECP
parallel port

SVGA-out (up to 1024
x 768 x 256); VGA-out
(640 x 480 x 65,536
colors)

115,200-baud,
bidirectional infrared

Expansion bus
connector

SCSI-2 port
NTSC/PAL video-out

port
Keyboard/mouse port
Headphone/stereo-out

port

9-pin, 115,200 - b/s,
RS-232 port

25-pin EPP and ECP
parallel port

SVGA-out (up to 1024
x 768 x 256)

115,200 - baud, bi­directional infrared

Expansion bus
connector

Keyboard/mouse port
Headphone/stereo-out

port
Microphone port
Stereo-in port

9-pin, 115,200 - b/s, RS­232 port

25-pin bidirectional
parallel port

SVGA-out (up to 1024 ×
768 × 256)

115,200 - baud,
bidirectional infrared

Enhanced port replicator
connector

Floppy drive port

Stereo-in and
microphone ports

MIDI/joystick port

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8

Expandability

One Type III PCMCIA
slot (or use as two
Type II slots) with 3.3­V or 5-V support

ISA-based slots, and
parallel, serial,

SVGA-out (up to 1024
x 768 x 256),

keyboard, PS/2
mouse, MIDI/joystick,
audio, and SCSI-2
ports

One Type III PCMCIA
slot (or use as two
Type II slots)

Enhanced port
replicator with parallel,
two serial, SVGA-out
(up to 1024 x768),
keyboard, PS/2 mouse,
and SCSI ports; and
PCMCIA slot
(concurrent Type II and
Type III)

One Type III PCMCIA
slot (or use as two Type
II slots)

External ultra-thin floppy
disk drive (included with
product)

Enhanced port replicator
with EPP parallel, serial,
VGA-out (up to 1024 ×

768), keyboard, PS/2 or
Microsoft® mouse, and
SCSI ports; external
floppy connector; and
optional HP EtherTwist
LAN card slot

Pre-installed Software

Security Features

Microsoft Windows 95
or
Microsoft Windows for

Workgroups 3.11 *
MS-DOS® 6.22
Plug and Play BIOS
HP PIM

2-level password
protection

PC ID (tattooing)
Kensington lock slots

Microsoft Windows for
Workgroups 3.11

MS-DOS 6.2
Laplink Remote

Access
Easy connection to

your desktop PC,
network and desktop
printers; works via
cable or infrared.

User password
Kensington lock slots

Microsoft Windows
for Workgroups 3.11

MS-DOS 6.22
Upgrade easily to

Windows 95
Plug and Play BIOS
LapLink Remote Access
Appointment Book
HP Financial Calculator
Phone Book
IrDA infrared printing

driver
User password
Kensington lock slots

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9

OmniBook 4000 Series: Product
Features

Description

Models

Advanced performance with flexibility, exceptional user comfort, all-day use
and easy access to peripherals.

This is a complete list of all the standard Omnibook models ever made
available. Factory special options are not included in this listing. Many of
these models are now obsolete.

Refer to the Hewlett-Packard Corporate Price List for cuurently available
models and options.

Product Description Part

Number

HP OmniBook 4000C DX2/50MHz; 260MB Hard Drive F1081A

HP OmniBook 4000C DX2/50MHz; 340MB Hard Drive F1082A
HP OmniBook 4000C DX2/50MHz; 520MB Hard Drive F1083A
HP OmniBook 4000CT* DX4/75MHz; 340MB Hard Drive F1157A
HP OmniBook 4000CT* DX4/75MHz; 520MB Hard Drive F1158A
HP OmniBook 4000CT* DX4/75 MHz; 810MB Hard Drive F1159A
HP OmniBook 4000C DX4/100MHz; 340MB Hard Drive F1086A
HP OmniBook 4000C DX4/100MHz; 520MB Hard Drive F1087A
HP OmniBook 4000C DX4/100MHz; 810MB Hard Drive F1096A
HP OmniBook 4000CT* DX4/100MHz; 340MB Hard Drive F1088A
HP OmniBook 4000CT* DX4/100MHz; 520MB Hard Drive F1089A
HP OmniBook 4000CT* DX4/100MHz; 810MB Hard Drive F1097A
HP OmniBook 4000CT* DX4/100MHz; 810MB Hard Drive with

16MB RAM
* Indicates TFT display
(Note: All others have 8-MB RAM except, F1081A with 4MB RAM and

F1160A, which has 16MB RAM)

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10

F1160A

Accessories Description Part

Number

4-MB RAM expansion card F1076A

8-MB RAM expansion card F1077A
16-MB RAM expansion card F1078A
260-MB Hard Disk Drive F1091A
340-MB Hard Disk Drive F1092A
520-MB Hard Disk Drive F1093A
810-MB Hard Disk Drive F1032A

3.5 inch Floppy Drive Module F1079A
AC Adapter F1072A
NiMH Battery Pack Module F1073A

What comes in
the box

Microprocessor

External Battery Charger (Charges up to two batteries
concurrently)

Automobile Adapter F1075A
Enhanced Port Replicator F1090A

OmniBook 4000 mainframe
Battery pack
User documentation: manuals, support material, registration card
Companion/utility disks
AC adapter (P/N: F1072A), localized power cord
Brochures for OmniBook accessories and Deskjet 320

Intel486 DX2 50-MHz
Intel486 DX4 75-MHz
Intel486 DX4 100-MHz

F1074A

Bus Architecture

ISA, Video local Bus

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11

Memory

Main Memory DX2/50 MHz, Model 260 (F1081A)

4MB RAM

Mass storage

Flexible disk
drive

DX4/100 MHz, Model 810 (F1160A)

All other models
Max Possible RAM 32MB
Type of memory boards HP Proprietary boards, 2 user accessible slots on the

bottom case.

Expansion Memory
board options

Cycle time 70ns
The hard disk drive can be removed by the user for easy upgrades. The hard

drive is located on the bottom case and with the removal of one screw the hard
drive can be replaced.

Hard drive manufacturer: Toshiba for all capacities

Internal 3.5 inch, 1.44-MB flexible disk drive is standard on all models. The
flexible disk drive can be easily removed by the user and replaced with an
additional battery pack to double battery life. This is part of the modularity
features of the OmniBook 4000.

4-MB (HP # F1076A)
8-MB (HP # F1077A)
16-MB (HP # F1078A)

16MB RAM
8MB

Built-in I/O

Manufacturer: Canon (subject to change)
25 pin bi-directional ECP an EPP parallel port
SVGA out (up to 1024 x 768 x 256 colors) with simultaneous

viewing
115,000-b/s bi-directional infrared port.
Expansion Bus Connector for connecting to enhance port replicator (F1090A)
6-pin mini-DIN keyboard or PS/2 mouse
Headphone/stereo-out port
Microphone port
Stereo-in port

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12

Display/video

The OB4000 DSTN may report the display RAM to be 1024KBs, however, it is
512KB. Later versions have corrected this. It is not a hardware problem but a
reporting problem.

Display RAM is not upgradable.
Display Manufacturer: Hitachi
Video graphics controller chip: Western Digital 90c24 rocket chip.
External video resolution (both types): Supports VGA/SVGA

external monitors with up to 1024 x 768 x 256 colors in
noninterlaced mode.

Auto detection of external monitor without rebooting
Note: Includes option to simultaneously display external video

and notebook display.

TFT Display
Quality

TFT display manufacturing is a high precision but imperfect technology and
manufacturers cannot currently produce large displays that are cosmetically
perfect. Most if not all TFT displays will exhibit some level of cosmetic
imperfection. These cosmetic imperfections may be visible to the customer under
varying display conditions and can appear as bright, dim or dark spots.

This issue is common across all vendors supplying TFT displays in their products
and is not specific to the HP OmniBook display.

The HP OmniBook TFT displays meet or exceed all TFT manufacturer's
standards for cosmetic quality of TFT displays. HP does not warrant that the
displays will be free of cosmetic imperfections.

TFT displays may have a small number of cosmetic imperfections and still
conform to the display manufacturers cosmetic quality specifications.

Here are some guidelines to use in determining what action to take on a customer
complaint of cosmetic imperfection in their TFT display:

1. The unit should be viewed in the customer's normal operating condition.
This means if the customer uses the unit predominately in DOS, or Windows, or in

some other application or combination of applications, that is where the
determination shall be made. Self test is not a normal operating condition and is
not a sufficient tool to interpret display quality.

2. In the customer's normal operating mode:
a. If 4 or more variant pixels appear clustered in the area approximated by a

thumbprint on the display surface, then the display should be considered for
replacement.

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13

b. On OmniBook 4000CT models, if more than 30 total pixels anywhere on the
display are bad, then the display should be considered for replacement. On
OmniBook 600CT and OmniBook 5000CT models, if more than 15 total pixels
anywhere on the display are bad, then the display should be considered for
replacement.

These are the only conditions in this guideline that may call for a replacement due
to a defect in material or workmanship based on the HP Limited Warranty
Statement.

3. If a display is considered for replacement, it should be clear to the customer
that cosmetic variations on the replacement display may also exist, and may
require the customer to use a work-around to obscure the cosmetic imperfection.

4. Customers with cosmetic-based complaints only, that do not conform to the
above conditions and tests will not normally be considered for display
replacement. It will be left to the judgment of the HP-responsible person who, in
working with the customer, to identify work-arounds that are reasonable and
appropriate for the individual customer. Customers who must have a more
perfect display solution should consider switching to an OmniBook with a DSTN
display.

We expect over time that the industry will continue to improve in their ability to
produce displays with fewer inherent cosmetic imperfections and will adjust our
HP guidelines as the improvements are implemented.

User interface

Power

Keyboard: 85-key touch-type keyboard with embedded numeric keypad and 12
Fn keys. Wrist pad provides comfort for extended keyboard use. External 6-pin
mini-DIN interface for external keyboard connection. (HP external keyboard (101­key) Part number C3756A)

Pointing device: Built in 25MM trackball positioned in the center
of the wrist pad for easy access and comfort. Industry compliant
to maintain software compatibility.

Optional pointing devices: Includes 6-pin mini-DIN interface for
external PS/2 mouse connection. Also supports serial mouse
connection.

Battery type: Removable 14.4-Vdc rechargeable NiMH. NiMH battery does not
require complete discharge before recharging. There is no "memory" effect that
reduces battery life.

Battery Life; rundown (approx.):

3-4 hrs on DSTN DX2/50

2-3 hrs on TFT DX4/100

Recharge time: Approx. 75 minutes in suspend mode or off position. The battery
trickle charges while the unit is turned on. It takes several days to gain a full
charge while trickle charging.

Power

Low battery signals: Low battery warning at 10 percent of full charge, followed by
save to hard disk after five minutes.

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14

Battery life can be doubled by installing second battery in place of the 3.5 "
flexible drive. The OmniBook will recognize the additional battery and provide
battery status of both batteries (can be installed hot).

Smart Battery: The OmniBook 4000 uses "Smart" battery technology. The
battery itself contains an ASIC (Application Specific Integrated Circuit) that is
able to continuously test and track the status of the battery. The OmniBook BIOS
can then receive high-quality information about the battery condition directly from
the hardware and not interrupt the CPU. The OmniBook 4000 no longer has to
rely on software to determine the condition of the battery. The condition can be
checked using two methods that receive information from the BIOS
(CONFIGURATION [fn][f2], Windows Control Panel Power).

Energy S.T.A.R. compliant
AC Adapter: 100 to 240 Vac adapter (50 to 60 Hz) input; 21 Vdc, 1.35A output.

Use only an HP F1072A AC adapter (the type shipped with the OmniBook). Using
any other adapter could damage the OmniBook and void the warranty. Always
plug it into a grounded outlet..

Power management options: Advanced; Standard; Off; Custom.
Optional power accessories from HP:
A fully charged NiMH battery in storage will loose 20% of its charge per month in

storage.

External battery
charger

Automobile
adapter

NiMH battery
pack

AC adapter
Accessory Slots

Audio Systems

Designed for desktop use. It has an internal power supply and plugs in to the wall.
Works with 110/220 volts and 50/60Hz. It also has a power cord to plug into the
OmniBook 4000.

Charges two additional batteries
HP part number: F1074A
HP part number F1075A

HP part number F1073A

HP part number F1072A
User available PCMCIA Slots: 2 Type II or 1 Type III (version Two)
The PCMCIA slots are fully industry compatible and supports SystemSoft Card

Services and Socket Service (2.1). The system will support a wide variety of
PCMCIA cards.

PCMCIA controller chip manufacturer: Vadem 386.
High performance audio: 16-bit stereo sound, Sound Blaster hardware

compatible.
Two stereo speakers with acoustic chambers

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15

Audio Systems

I/O: Headphone/stereo-out port; microphone port; Stereo-in port
IRQ default setting for soundblaster is 5.
Sound Manufacturer: ESS

Operating
environment

Storage
environment

Environmental
Testing

BIOS

Temperature:

DSTN display models: 41 to 104 degrees F (5 to 40 degrees C)
TFT display models: 50 to 104 degrees F (10 to 40 degrees C)
90% relative humidity at 104 degrees F (40 degrees C) maximum

Temperature: -40 to 149 degrees F (-40 to 65 degrees C)

90% relative humidity at 149 degrees F (65 degrees C) maximum

ESD as per IEC-801-2, EN 55024-2

Drop testing: 1 drop flat onto all six faces from .75 meter
Also tests for altitude, magnetic & radiated susceptibility &

interference, shock & vibration.
Note: These are the tests that HP designs notebook computers

to meet. Due to normal variations in the components of
individual machines, some machines will perform better and
some won't perform as well. HP does not guarantee that every
notebook computer will meet these specifications.

Plug and Play BIOS stored in EEPROM

Software and
Operating
System

User Upgradable via floppy drive

A corrupt BIOS that prevents the machine from booting requires a system

board replacement. The BIOS can be corrupted by interrupting the BIOS

upgrade in the middle of the process.
Microsoft Windows for Workgroups 3.11

MS-DOS 6.2
Easy upgrade to Windows 95

Laplink Remote Access for easy connection to desktop PC, network printers, and
other OmniBooks

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16

Supported
Operating
Systems

MS DOS version 6.22*
Microsoft Windows for Workgroups 3.11*
Microsoft Windows 95*
Microsoft NT workstation 3.51**
OS/2® version 3.0**
* Supported to the application level. ** Only setup and configuration supported.

Security

Password
Decode

Physical security from Kensignton Lock
System password: When the password setting is enabled, a window will pop-up

to allow the user to enter the old password, enter a new password and to verify
the new

If the user forgets the system password, there is a master password that will
unlock the Omnibook. The user calls Technical Support to determine this master
password as follows:

1. Support will tell the user the keys to type at the password entry screen:

[alt][shft][f10]

2. The Omnibook generates and displays an encoded master password.

This is displayed under the normal password entry area. At this point, this

is the only password that will unlock the Omnibook unless the user presses

[ESC] to remove the encoded master from the password entry screen.

Then the user's stored password can be entered.

3. The user reads the encoded master password to Support.

4. Support runs a program that decodes the encoded password, and reads

the decoded password (alphanumeric) to the user.

5. The user types in the decoded password.

6. Omnibook decodes the encoded master password it generated and

compares it to the decoded password typed in by the user.

7. If the two passwords match, the Omnibook is unlocked. The forgotten

password is automatically erased. Support can then guide the user through

the process of entering a new password.

8. If the two passwords do not match, the previous sequence must be

repeated until the user correctly enters a master password.
The encoded master password is an eight-character alphanumeric sequence that

the Omnibook generates at random every time the appropriate keys are
pressed in the password entry screen. Because it is generated randomly, a
master password can only be used to unlock the Omnibook once. If the user
forgets the password at another time, it will require another call to Support. (If
the user presses the appropriate keys by mistake, pressing [ESC] will allow
entering the stored password.)

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17

Password
Decode Policy

The password descramble programs for the HP OmniBook PCs are protected as
HP Company Private information. They may not be copied, backed-up, printed or
distributed. There are only six official copies of each program.

In addition to protecting the program itself, it's use is also controlled. Hewlett­Pakard and authorized support providers must ensure with written evidence that
the OmniBook that is being "descrambled" is actually in the hands of the unit's
actual and current owner. This requires a sales receipt showing the unit serial
number and owner's name, or a written statement from the owner attesting that
they are the owner of the unit. The statement can be a FAX copy of the
document. The fact that the unit is in the hands of an HP representative on the
behalf of the customer is not evidence of ownership. In addition, HP will not
descramble a unit for any non-owner, even if it involves law enforcement
agencies. If you receive such a request, you should notify management and HP
Corporate Legal immediately. (These requests may require a court order prior
to our participation.)

Further, you must log the name, serial number and date of the running of the
descramble program, and file the written backup with the log. The log and
backup is subject to standard record's retention process and review.

The final issue relating to descramble of passwords is that HP cannot provide
information to users that would assist them in improperly descrambling a
password and opening a unit.

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18

Notebook Hardware Structure

Field Replaceable Assemblies

Installing memory

(End User Replaceable)

The OmniBook 4000 family has two memory locations for expanding system RAM.
The memory location on the side of the OmniBook that has the battery also has the
factory RAM module installed. To add an additional 8MB or 16MB of RAM, use the
location on the other side of the unit near the floppy drive. If the base unit has
4MB or 8MB of memory, and you want to expand the memory to more than 20MB
or 24MB, then the original 4MB or 8MB module must be replace with a larger
module.

Figure 1 - Memory Doors, Modules, and Slots

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19

Battery Module and Floppy Disk Drive Module

(End User Replaceable)

The Battery and Floppy Disk Drive Modules are user replaceable. A second
Battery Module may be installed in the Floppy Disk Drive Bay. This doubles the
battery life of the OmniBook 4000.

To remove either module, turn the OmniBook over. Squeeze the two levers
together and slide the module forward.

Reverse the procedure to install a new Battery or Floppy Disk Drive Module.

Figure 2 - Floppy Drive and Battery

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20

Hard Disk Drive

(End User Replaceable)

The Hard Disk Drive Module is user replaceable.
To remove the Hard Disk Drive Module, remove the screw under the latch on the

hard drive. Push the Hard Drive Module Forward - do not pull on the latch - it is not
strong enough, use the back edge of the module in front of the depression in the
bottom case instead.

Reverse the procedure for installation.

Figure 3 - Hard Disk Drive

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21

Small parts

(End User Replaceable)

The I/R lens, expansion door, I/O door, Rubber feet, memory doors, and PCMCIA
door are all replaceable.

The I/R lens snaps in and out from the inside of the I/O door.
To remove the I/O door, open it fully. Flex the door so that the center hinge

separates from the backcase. Continue to flex until side pins clear holes in back
case. To reassemble, simply reverse the procedure.

The expansion door is removed by opening it fully and flexing it in the middle until
the pins in the backcase disengage from the slots in the side of the door. To
reassemble, reverse the procedure.

The rubber feet are adhered to the bottom case with adhesive.
The PCMCIA door is remove in the same manner as the expansion door.

___________

22

Icon Assembly and Display Module

Screws

(HP Authorized Support Providers Only)

To remove the display module on the OmniBook 4000C and CT turn the unit over
and withdraw the two Phillips screws from the bottom back corners of the unit (see
diagram below). This is not required if only the ICON assembly is to be removed.

Display/Chassis

Figure 4 - Display Screws

___________

23

Turn the unit right side up and remove the Icon assembly by placing the thumbs on
each edge of the assembly and pushing lightly (see diagram below). The front
edge of the Icon Assembly will lift up slightly.

Figure 5 - Icon Assembly

___________

24

Lift the display straight up about 1 inch. The Icon Assembly will lift up with the
display. Move the Icon assembly out of the way. The cable from the Icon
Assembly to the PC board does not need to be removed if only the display is being
removed. Otherwise, slide the connector sleeve foward to remove the Icon
Assembly cable.

Next, remove the two cables attaching the display module to the PC board. Lastly,
remove the two screws attaching the grounding straps to the PC board. The
display can now be removed the rest of the way.

Display/Chassis
Screws

Figure 6 - Display Removal

To reinstall the display module or Icon Assembly, just reverse the above
procedure. When reinstalling the Display Module, make sure that the two posts on
either side of the display line up parallel with their slots in the top case. If they are
not parallel, the post will get caught inside the top case before the display is seated
completely. If this happens, remove the display and line the posts up properly.
Also take care that the Icon Assembly flex cable is tucked inside of the “tunnel” of
the Icon Assembly. This will prevent the cable from crimping and possibly
malfunctioning.

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25

Palm Rest Assembly and Track Ball Assembly

(HP Authorized Support Providers Only)

Before removing the Palm Rest Assembly or Track Ball Assembly, the battery and
the floppy disk drive assembly (a second battery may be installed in to the floppy
drive bay) must be removed. See instructions for removal of these two modules.

In the floppy disk drive and battery bays are four Phillips screws, two in each bay.
Remove these four screws while the unit is upside down (see illustration below).

Figure 7 - Lower Case Screws

Palm Rest
Screws (4)

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26

Turn the unit right side up, open the lid and lift up on the palmrest. Disconnect the

M2.6x5L

Assembly

cable attaching the palmrest to the track ball assembly.
To remove the track ball assembly, disconnect the Track Ball Assembly cable and

remove the one screw that holds the Track Ball Assembly in place. The Track Ball
Assembly then lifts out.

Palm Rest
Assembly

Track Ball
Assembly

Screw ISOB

Sub-Battery

Figure 8 - Palm Rest and Track Ball Assemblies

Reverse the procedure to install a new Palm Rest Assembly or Track Ball
Assembly.

___________

27

Keyboard Assembly

(HP Authorized Support Providers Only)

Required Equipment:

• Phillips Screwdriver

Components to Remove Prior to Keyboard:

1. HDD, FDD, and Battery

2. Palm Rest Assembly (may remain connected)

3. Sound Board (PCB Assy PK-688/PK-AUD) (partial removal)

Removal Procedure:

1. Follow the instructions for removing Battery, Floppy Disk and Hard Drive.

2. Follow the Palm Rest Assembly Removal Procedure. Note the Track Ball does
not need to be removed and the Palm Rest may be lifted out without being
disconnected.

3. The keyboard can then be lifted out by gently prying up on the front edge.

4. To gain access to the Keyboard flex cables, the Sound Board must be removed
(see Figure 9). To remove the Sound Board, lift up on the sides of the board.
Note, the Sound Board cannot be completely disconnected at this point - the
Upper Cover must be removed to gain full access to the Sound Board.

5. Disconnect the Keyboard flex cables from the zero force insertion slots.

Replacement Procedure:

1. Reverse the procedure to install a new keyboard.

___________

28

Figure 9 - Keyboard and Sound Board

___________

29

Power Board (PCA Assy PK-DC)

(HP Authorized Support Providers Only)

Required Equipment:

• Phillips Screwdriver

Components to remove prior Power Board (PCA Assy PK-DC):

1. HDD, FDD, and Battery

2. Palm Rest Assembly (may remain connected)

3. Keyboard (may remain connected)

Removal Procedure:

1. Remove Battery, Floppy Disk Drive, and Hard Disk Drive.

2. Follow the Palm Rest Assembly Removal Procedure to remove this component.
Note, the Palm Rest only needs to be lifted out; it may remain connected.

3. Follow the Keyboard Removal Procedure. Note, the Keyboard only needs to be
lifted out; it may remain connected.

4. Remove the Power Board by gently rocking back and forth. See Figure 10 for
component location.

Replacement Procedure:

1. Simply reverse the above Removal Procedure.

___________

30

Upper Case, Sound Board (PCB Assy PK-688/PK-AUD),
and PCA Display Connect PK-LSP

(HP Authorized Support Providers Only)

Required Equipment:

• Phillips Screwdriver

Components to remove prior Upper Case, Sound Board (PCB Assy PK-688/PK­AUD), and PCA Display Connect PK-LSP:

1. HDD, FDD, and Battery

2. Icon Assembly and Display Module

3. Palm Rest Assembly

4. Keyboard Assembly

5. Power Board (optional)

Removal Procedure:

1. Remove Battery, Floppy Disk Drive, and Hard Disk Drive.

2. Follow the Icon Assembly and Display Module Removal Procedure to remove
these components.

3. Follow the Keyboard Removal Procedure. Note, although the Sound Board
cannot be completely removed at this point, it is strategic to disconnect the
rightmost harness cable at this step (see Figure 9).

4. Additional maneuvering space may be gained by removing the Power Board,
however, it is not necessary to do so.

5. Remove the ISOB M2x6L Screw located on the left side of the Upper Case. See
Figure 10 for location of this component.

6. Remove the Upper Case by gently prying up at the seam between the Upper
Case and Lower Case. The Upper Case will then snap off.

7. At this point, the Upper Case will still have the Sound Board and the Microphone
Assembly attached. The Microphone can simply be disconnected from the
Sound Board if necessary. The Sound Board may be affixed with a drop of glue
to the Upper Case where the Audio Ports meet the plastic. The Audio Ports can
be gently pried from the Upper Case plastic if necessary (see Figure 10). Note,
that the Sound Board and Audio Ports are a single assembly.

8. Next, remove the three (3) ISOB M2.6x5L screws from the LSP-M/B Shielding
Plate and PCA Display Connect PK-LSP. See Figure 10 for locations of these
components.

9. The LSP-M/B Shielding Plate can now be removed.

10. Remove the PCA Display Connect PK-LSP by gently rocking back and forth.

Replacement Procedure:

1. Simply reverse the above Removal Procedure.

2. Take note that to reinstall the Audio Ports onto the plastic of the Upper Case
does not require a drop of glue. The one screw is sufficient.

3. The LSP-M/B Shielding Plate fits between the plastic of the Lower Case and the
strip of shielding affixed along the audio ports holes in the plastic of the Lower
Case.

___________

31

Screw ISOB

M2x6L

Connect PK-LSP

Shielding Plate

Screw ISOB
M2.6x5L
Qty (3)

LSP-M/B

Audio Ports (part of
Sound Board
Assembly)

PCB Assy PK­688/PK-Aud
(Sound Board)

Microphone Assembly

Upper Case

PCA Display

Screw ISOB

2.6x5L

PCA Assy PK-DC
(Power Board)

Figure 10 - Upper Case and Display Connect

___________

32

Keyboard Grounding Plate, CPU, and System Board

(HP Authorized Service Providers Only)

Required Equipment:

• Phillips Screwdriver

• Nutdriver (5 mm or 3/16 in)

Components to remove prior Keyboard Grounding Plate, CPU, and System
Board:

1. HDD, FDD, and Battery

2. Icon Assembly and Display Module

3. Palm Rest Assembly

4. Keyboard Assembly

5. Power Board

6. Upper Case, Sound Board, and Display Connect

Removal Procedure:

1. Remove Battery, Floppy Disk Drive, and Hard Disk Drive.

2. Follow the Icon Assembly and Display Module Removal Procedure to remove
these components

3. Follow the Palm Rest and Keyboard Assembly Removal Procedures to remove
these components.

4. Remove the Power Board by gently rocking back and forth.

5. Remove the Upper Case, Sound Board, and Display Connect by following the
corresponding Removal Procedure.

6. Remove the K/B Grounding Plate by unfastening the three (3) ISOB M2.6x5L
screws and one (1) 10mm standoff. See Figure 11 for locations of these
components. Take note that the Track Ball and Sub Battery-M/B Harnesses
must be threaded through the K/B Grounding Plate before it can be freely
removed.

7. The CPU may now be removed by gently rocking back and forth. Take care not
to dislodge the heat sink from the top of the CPU. If needed, the CPU Shielding
Plate may also be removed at this point.

___________

33

M2.6x5L

Standoff 10mm

(CPU)

(System Board)

Assembly

K/B Grounding
Plate

Track Ball and
Sub Battery-M/B
Harnesses

Screw ISOB

PCA Proc

Standoff 15mm

Screw ISOB
M2.6x5L
Qty (2)

CPU Shielding
Plate

PCA Main PK-486

Figure 11 - System Board and Keyboard Grounding Plate

___________

34

PCMCIA Button

Lower Case

Enhanced Port Replicator

(Exchange Assembly)

The Enhanced Port Replicator (EPR) for the OmniBook 4000 contains no field
replaceable components. If any component of the EPR is defective, the entire unit
must be replaced.

Troubleshooting Tips:

• The OmniBook 4000 will only detect one pointing device at a time. Therefore, if
an external mouse is connected to the EPR, the track ball will not be active.

• When an external mouse is detached, the pointing devices settings must be
manually updated in the Setup for the change to be detected.

• The EPR PCMCIA slots do not receive power when the OmniBook is in Suspend
mode.

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35

Configuration and Setup

Main Configuration Screen

Pressing [fn][f2] invokes the BIOS setup and configuration utility. Users can check
system configuration and changes settings using [f] keys from this screen. This is
the most accurate place to check battery and system status. Pressing [f3] from this
screen exits back to the current application.

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36

Power Screen

The power screen contains the current power level of the main and auxiliary
battery. If there is no auxiliary battery, the text is dimmed (or in a passive color).
Power conservation settings consists of the options shown. When Custom is
selected, "suspend after", "hibernate after" and "HDD stop after" settings can be
changed by the user (indicated again by the settings in brackets [ xxx ]). When
any of the other selections are chosen by the user, the system will show the
settings that are programmed by the system.

The hibernation setup area is shown to inform the user the size of the file used to
save the RAM image to disk. There is no user selectable control in this area.

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37

Power Configuration

To implement the power management capabilities, the following settings are set by
the user from the power setup screen. The CPU doze will automatically occur and
will not be user selectable.

Setting: Parameters: Default Comments:

Power
Conservation
Mode

Suspend After

Hibernate After

HDD Stop After

Processor Speed
PCMCIA Power

Advanced;
Standard; Off;
Custom

Disable; Time
(1 - 15 minutes)

Disable; Time
(5 - 120 minutes)

Disable; Time
(0.5 - 15 minutes)

Fast; Slow Fast
Disable; Enable Enable Enable power to PCMCIA

Advanced In advanced mode the

user can not change the
settings, they are preset.

2 minutes How long the system will

stay in Run with (no
activity) until it suspends.
If disabled it will stay in
Run.

30 minutes How long the system will

be in the suspend state. If
disabled it will stay in the
suspend state.

1 minute HDD will turn off, system

has ability to run. HDD
will spin up when access
required.

each slot during suspend.

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38

Power Defaults

Advanced, Standard, Off and Custom, power conservation default values are:

Advanced Standard Off: Custom
Suspend After
Hibernate After:
HDD Stop After:

1 minute 2 minutes Disabled 1 minute

15 minutes 60 minutes Disabled 15 minutes

30 seconds Disabled Disabled 30 seconds

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39

System Configuration

The system screen contains the processor and memory information for the user to
glance at. It also allows the user to set the date and time. The real time clock is
not changed until the user exits the setup program. The user can also enable or
disable the processor cache.

When the user decides to enable a password, a pop up window requests the old
password, new password and confirmation of the new password. Hard drives or
mass storage are not affected by the password--only the turn-on condition.
Password is not tested at resume from suspend.

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40

Input/Output Configuration

Setting: Parameters: Default: Comments
Printer port
IR Port Assignment

Pointer device
External Fn. key
Display

LCD gray scale

Display mode

Bi-directional; EPP; ECP Bi-directional
COM2 COM2 IR is hard wired to

COM2
Internal; External Internal
Enabled; Disabled Enabled
LCD; CRT; LCD and

CRT
8, 16, 64 64.00 Dimmed with color

Normal;Inverse Normal Dimmed with color

LCD

display attached

display attached

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41

Disk Configuration

Setting: Parameters Default Comments
Diskette A

Enabled; Disabled Enabled

Boot from
HDD Configuration

FDD first; HDD only FDD first
Auto; User defined Auto

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42

Audio Configuration

The audio screen allows the user to adjust the speaker volume of the system. The
user can also select the IRQ, I/O Address and DMA channel of the audio board.

Setting: Parameters Default Comments
Volume Left

Slider Middle

Volume Right
IRQ

DMA channel

Slider Middle
IRQ5; IRQ7; IRQ9;

IRQ10
DMA0; DMA1; DMA3 DMA1

IRQ7

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43

Troubleshooting and Repair

Known Hardware
Issues

OmniBook Self­Test

First POST:
BEEP CODES

The OmniBook 4000C and CT will not charge the batteries while in "ON"
mode.

Certain HP Vectra PCs will not link over I/R with the OB 4000. Refer to the
technical newsletter for details.

The complete self-test procedure is documented in the OmniBook 4000
Operating Guide.

A note about interpreting self-test results.
Self-test alone should not be used to diagnose a hardware problem. If the self-

test results are absolutely clear and repeatable, confirm the results with at least
two other non-self-test failure symptoms.

The OmniBook 4000 BIOS includes a POST facility that tests a number of
hardware and firmware items in the unit at each cold-start (BOOT or RESET).

These multiple beep codes indicate a failure in a simple test of:

a portion of base memory
Flash BIOS checksum
a portion of conventional memory
a portion of extended memory
If the unit fails to boot:

all accessories are removed, including memory cards, external floppy, port
expander, modems, PCMCIA cards, LAN cards, printers, VGA-out cables,
external pointing devices, clean AC power is provided (no "chained" battery
chargers or auto adapters), and press reset.

If the unit still fails to boot, it requires service.
Beep codes
Beep codes are used to identify a POST error that occurs when the screen is

not available. Once the screen is operating, diagnostic messages are
reported to the screen. There are beep codes for both fatal and nonfatal
system board errors.

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44

Beep Code Description

none CPU register test in progress or failure.
1-1-1 CPU Failure
1-1-3 CMOS write/read test in progress or failure. Failure will result

in a system halt.

1-1-4 ROM BIOS checksum test in progress or failure. Failure will

result in a system halt. Checksum test - All of the values in a
given range of locations are added together. The range
includes a location which, when added to sum of the ranges,
will produce a known result (0). BIOS is in FLASH and can
only be fixed through replacement of the flash device (not a
field repairable item) Customer units should be returned for
repair.

1-2-1 Programmable interval timer 0 test in progress or failure.

Failure will result in a system

1-2-2 DMA channel 0 address and count register test in progress or

failure. Failure will result in a system halt.

1-2-3 DMA page register write/read test in progress or failure.

Failure will result in a system halt.

1-3-1 RAM refresh verification test in progress or failure. Failure will

result in a system halt.
1-3-2 SMI RAM Bad. Failure will result in a system halt.
none First 64K RAM test in progress. No specific test is performed

- just indicates that the test is beginning (i.e., no failure).

1-3-3 First 64K RAM chip or data line failure, multi-bit. Failure

results in a system halt.
1-4-2 Parity failure first 64K RAM. Failure results in a system halt.
2-1-1/2/3/4 First 64K RAM chip or data line failure on bit x. Failure results

in a system halt.
2-2-1/2/3/4
2-3-1/2/3/4
2-4-1/2/3/4
3-1-1 Slave DMA register test in progress or failure. Failure results

in a system halt.

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45

3-1-2 Master DMA register test in progress or failure. Failure results

in a system halt.
3-1-3 Master interrupt mask register test in progress or failure.

Failure results in a system halt.
3-1-4 Slave interrupt mask register test in progress or failure.

Failure results in a system halt.
3-2-4 Keyboard controller test in progress or failure. Failure results

in a system halt.
3-3-4 Screen memory test in progress or failure. Failure will result

in a beep code but not a system halt.
3-4-1 Video Retrace Failure.
3-4-2 Screen retrace test in progress.
3-4-3 Screen retrace test failure
4-2-1 Timer-tick interrupt test in progress or failure. An error

message is displayed on the screen. The system does not

halt.
4-2-2 Shutdown test in progress or failure. If possible, the BIOS will

continue POST, skipping the memory tests.
4-2-3 Gate A20 failure. An error message is displayed on the screen

and the memory tests are suspended. The system does not

halt.
4-2-4 Unexpected interrupt in protected mode. The system does not

half when an unexpected interrupt occurs.
4-3-1 RAM test of memory above 64K in progress or failure. POST

will continue.
4-3-2 Programmable interval timer channel 2 test in progress or

failure. POST will continue.
4-3-4 Real-time clock text in progress
4-4-1 Serial port test in progress or failure. POST will continue.
4-4-2 Parallel port test in progress or failure. POST will continue.
4-4-3 Math coprocessor test in progress or failure. POST will

continue.

___________

46

Last POST:
DISPLAY CODES

There are a number of POST tests that are performed after the BEEP Code
tests. Failure of one or more of these tests will result in a displayed failure code
(i.e., 03044). It is extremely important not to interpret a failure code immediately
as a hardware failure until:

all accessories are removed, including memory cards external floppy, port
expander, modems, PCMCIA cards, LAN cards, printers, VGA-out cables,
external pointing devices, clean AC power is provided (no "chained" battery

chargers or auto adapters), and press reset.
If the unit still fails to boot, it requires service.
NOTE: make sure the display is adjusted to be visible.

PhoenixBIOS
POST Messages
(Power On Self
Test)

Message Possible Cause

Diskette drive failure The 0 or 1 drive failed or is missing.
Diskette drive x failure where x=O or x=1 The designated drive has either failed or is missing.
Diskette read failure - press Fl to retry boot (or may

also say, press Fl to retry boot, F2 for SETUP utility)

Within POST, there are three kinds of messages:

Error messages: These messages appear when there is a failure in
hardware, software, or firmware.

Informational messages: These messages provide infon-nation to the user
but require no action.

Beep codes: This kind of warning sounds when POST errors occur and the
screen is not available.

Because the OmniBook cannot be repaired by a service center below the FRU
level, these messages will provided limited troubleshooting or repair information.
However, the support specialist and service technician will be able to identify
trends in repairs from these codes.

The diskette is either not formatted or is defective.

Display adapter failed; using alternate The color/monochrome switch is set incorrectly.

The primary video adapter failed.

Gate A20 failure The keyboard controller is not accepting commands,

specifically, the enable and disableA20 commands.

Fixed disk configuration error The specified configuration is not supported or

doesn't match the actual hardware
Fixed disk controller failure The controller card has failed.
Fixed disk failure The fixed disk may be defective.

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47

Fixed disk read failure -press Fl to retry boot (or may
also say press Fl to retry boot, F2 for SETUP utility)

Internal cache test failed -cache is disabled Faulty cache memory in the 80486 processor chip.
Pointer device failure The mouse failed.

The fixed disk may be configured incorrectly or is

defective.

No boot device available -Press Fl to retry boot (or
may also say, press Fl to retry boot, F2 for SETUP
utility)

Message Possible Cause
No boot sector on fixed disk - press Fl to retry boot

(or may also say, press Fl to retry boot, F2 for
SETUP utility)

Not a boot diskette - press Fl to retry boot (or may
also say, press Fl to retry boot, F2 for SETUP utility)

No timer tick interrupt The timer chip has failed.
xxxxxh Option ROM checksum failure where xxxxxh

is the starting address of the option ROM
Shutdown failure Either the keyboard controller is not accepting the

Time of day not set - run SETUP program Clock not set.
Timer 2 failure The timer chip has failed.
F2 to enter ROM-based SETUP Invalid configuration information must be changed.

Either diskette drive A:, the fixed disk, or both the

diskette and disk are defective.

The C: drive is not formatted or is not bootable.

The diskette in drive A: is not formatted as a

bootable diskette.

The peripheral card contains a defective ROM.

reset command or the associated reset logic has

failed.

Invalid configuration information - please run
SET'UP

Keyboard clock line failure The keyboard, the keyboard cable connection, or

Keyboard data line failure- The keyboard controller firmware has failed.
Keyboard controller failure The keyboard controller firmware has failed.
Keyboard stuck key failure A key is jammed.
Memory failure at hex-value, read hex-value,

expecting hex-value
Unexpected interrupt in protected mode Hardware interrupt or NMI occurred while in

Real time clock failure The RTC or battery failed.

___________

48

Display adapter is configured incorrectly. Memory

size is incorrect. Wrong number of diskette drives.

Other configuration errors.

the keyboard controller is defective.

Circuitry associated with the memory chips has

failed.

protected mode.

Message Possible Cause
nnnk Base Memory The amount of base memory that tested

successfully.
nnnk Extended The amount of extended memory that tested

successfully.
Memory tests terminated by keystroke This message indicates that a user pressed the

spacebar while the memory tests were nmning and

stopped the memory tests.
Press the Fl key to continue This message indicates that an error was found

during POST. Pressing the Fl key allows the

system to attempt to boot.
Beginning memory test Press the SPACEBAR to

terminate the memory test
Press the Fl key to continue, F2 to nm the Setup

utility

A user can stop the memory tests by pressing the

spacebar.

This message indicates that an error was found

during POST. Pressing the Fl key allows the

system to attempt to boot. Pressing F2 allows users

to run the ROM-based Phoenix SETUP utility to

correct configuration information.

___________

49

Appendix A: Part Numbers

Description HP Part

Number

RUBBER FOOT BACK FLAT F1081-60933 none
RUBBER FOOT FRONT ROUND F1081-60934 none
NAME PLATE FOR ENGRAVING F1081-60936 none
PALM REST SCREW FTB 1.7X4L F1081-60942 none
MICRO PHONE ASSY F1081-60946 none
OVERLAY-BACK PNL F1081-80004 none
EXPANSION DOOR F1081-60930 none
TRACK BALL ASSY F1081-60914 none
PALM REST ASSY F1081-60915 none
ICON ASSY FOR PEGASUS F1081-60916 none
HOOK BUTTON F1081-60926 none
IR LENS F1081-60927 none
MEMORY COVER DOOR F1081-60928 none
PCMCIA DOOR F1081-60929 none
I/O DOOR F1081-60931 none
DOOR LATCH EXPANSION & I/O F1081-60932 none
MODEL NAME PLATE 4000C F1081-60937 none
MODEL NAME PLATE 4000CT F1081-60938 none
DISPLAY/CHASSIS SCREW
ISOP M2.6x8L
HDD SCREW ISOP M2.6X4L
EXTERN
HDD SCREW ISOP M3X6L
INTERN
HDD LABEL F1081-60943 none
HDD COVER F1081-60944 none
HDD LATCH F1081-60945 none
THERMAL MOUNTING TAPE F1081-60947 none
HARNESS TRACK BALL F1081-60948 none
HARNESS SUB BAT-M/B F1081-60949 none
INTEL INSIDE STICKER F1052-80013 none
HDD SHIELDING F1081-60950 none
HDD SHIELDING FOR 260MB F1081-60951 none
DISPLAY MODULE DSTN F1081-60902 F1081-69002
DISPLAY MODULE TFT F1088-60901 F1088-69001
HDD MODULE 260MB F1091-60901 F1091-69001
HDD MODULE 340MB F1092-60901 F1092-69001
HDD MODULE 520MB F1093-60901 F1093-69001
MEM MODULE 4MB F1076-60901 F1076-69001
MEM MODULE 8MB F1077-60901 F1077-69001
MEM MODULE 16MB F1078-60901 F1078-69001
FDD MODULE F1079-60901 none
AC ADAPTER F1072-60901 none
BATTERY PACK F1073-60901 none
KEYBOARD US F1081-60904 none
KEYBOARD UK F1081-60905 none

___________

F1081-60939 none
F1081-60940 none
F1081-60941 none

50

Exchange Part
Number

KEYBOARD GER F1081-60906 none
KEYBOARD SPA F1081-60907 none
KEYBOARD FRE F1081-60908 none
KEYBOARD ITA F1081-60909 none
KEYBOARD SWI F1081-60910 none
KEYBOARD DAN F1081-60911 none
KEYBOARD NOR F1081-60912 none
KEYBOARD SWE/FIN F1081-60913 none
PORT REPLICATOR F1090-60901 none
AUTO ADAPTER F1075-60901 none
DUMMY RAM CARD F1081-60935 none
HDD MODULE 810MB F1132-60901 F1132-69001
EXTERNAL BATTERY CHARGER F1074-80003 none
OB 4000C/CT ENG Rcvy Flpy Dsk F1081-60953 none
OB 4000C/CT FRE Rcvy Flpy Dsk F1081-60954 none
OB 4000C/CT ITA Rcvy Flpy Dsk F1081-60955 none
OB 4000C/CT GER Rcvy Flpy Dsk F1081-60956 none
OB 4000C/CT SPA Rcvy Flpy Dsk F1081-60957 none
Rcvy CDROM Kt-Mult-Lang
4000C/CT
Lower Cover F1081-60958 none
Upper Case with Button F1081-60959 none
LCD Back Cover for TFT F1088-60902 none
LCD Front Cover for TFT F1088-60903 none
LCD Back Cover for DSTN F1081-60960 none
LCD Front Cover for DSTN F1081-60961 none
PCB Assy PK-688/PK-AUD F1081-60962 none
PCA 50MHZ PROC PK-4D2-50 F1081-60917 F1081-69003
PCA 75MHZ PROC PK-4D4-75 F1081-60952 F1081-69004
PCA 100MHZ PROC PK-4D4-100 F1081-60918 F1081-69005
PCA MAIN W/O CPU PK-486W F1081-60919 F1081-69006
PCA IR MOD PK-MIR F1081-60920 none
PCA DISPLAY CONNECT PK­LSP
PCA ASS’Y PK-DC REV:00 F1081-60922 none
SUB BATTERY SET F1081-60925 none
Conductive Tape 4000 F1081-80020 none
HDD Plastic Kit 4000 F1081-60963 none
Standoff L=15mm F1081-60964 none
Standoff L=10mm F1081-60965 none
K/B Grounding Plate F1081-60966 none
LSP-M/B Shielding Plate F1081-60967 none
CPU Shielding Plate F1081-60968 none
Screw ISOB M2x6L F1081-60969 none
Screw ISOB M2.6x5L F1081-60970 none
OB4000 Familiarization Guide F1081-90051 none

F1081-12001 none

F1081-60921 none

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Appendix B: Additional Resources

The following table contains resources for additional product related information.

Resource Number/Address Comments

HP External Web http://hpcc998.external.hp.com/mcd/ No usage restriction
HP-MCD Internal Web http://webmcd.cv.hp.com Restricted to HP internet

access only

HP MCD Service Engineer [e-mail] Email address for service

related questions and issues

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