Hewlett Packard Omnibook Information

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HP OmniBook 800 Support Documents                   HP OmniBook 800 Parts Listing

More HP Omnibook Info - Mike Kopplin                             Sean McCreary's Omnibook Info Christopher Erickson's Omnibook Info


The following part of this web page was mostly built by a fellow named Kieran Garbutt, in New Zealand. Some time back, maybe 1998 he sent the HTML document to me saying he wasn't going to be able to keep it available on the web. It represents a lot of work on his part in compiling the information, so I'm keeping it available. This explains why there may be a few links that now point off into hyperspace! Here's Kieran's material:

About a year ago I purchased a second-hand Omnibook 600C off my flatemates' friend. At that time, it was running Windows 3.X and Dos 6.11. It had 8MB of RAM and a 171MB HDD. The reason I bought the laptop was that I had an assignment due in the next week and was spending a lot of time at the library writing out information and then typing it up on my PC at home. Needless to say - a lot of work. Unfortunately, the laptop wasn't in the best of health, so after the assignment was handed in, I took to it with a simple DOS command (format c:) and started from scratch. The next few weeks weren't easy...I had to try and find drivers, updates, new drives, compatible hardware...you name it...The following page is pitched at those in my situation where the information needed wasn't exactly printed out in black & white and a little bit of research was neccessary. For each model, check under the approriate heading and if you have anything to submit, use the mail links scattered all over the page. I would also reccommend that you subscribe to the Omnibook Mailing List. Send an email to listproc@elektro.cmhnet.org In the body of the email, put just this "subscribe omnibook Your Name" ... of course without the quote marks and with your own name! After you are subscribed, the email address to send your questions to is omnibook@elektro.cmhnet.org Again, if you find an answer, please take the time to mail me and help others who may have the same question. Most of the following material is taken directly from the Omnibook Mailing List.

OB 300 OB 425 OB 430
OB 530 OB 600 OB 800
OB 2000 OB 3000 OB 4000
OB 5000 OB 5500 OB 5700


Omnibook 300
Mini FAQ This is the unofficial FAQ. URL is FAQ. Also includes a news archive.
Maintenance plan for battery management. Operating from AC power, exit Windows and then turn off the OB. Remove the battery from the OB and reset for reboot (use round switch next to IR Port). After OB has rebooted the power indicator will show no charge. Exit Windows and turn of the OB. Replace battery and OB and reset for reboot (use round switch next to IR Port) You ought to see that the power management indicates a more realistic charge balance on the OB. Repeat this about once a month
Drop test on a 300 4 foot 6 inches to concrete. Survived once...second time same height to marble shattered the screen.
Password retrieval Create a latter requesting that the password be removed. Include your name, phone number, model and serial number, and proof of ownership and fax it to: +1.970.635.8663 (this is not a "900" number - just a new US area code.) They will call you and lead you through a password removal procedure. You press one of the function keys, and the password screen displays some random gibberish. You carefully read the gibberish to the HP password removal tech, and then the tech carefully tells you what gibberish to type in the password box.
Internal modem (Part Number HP F1040A) This modem has an internal microphone on it. The 3.5mm jack is for use with an acoustical coupler - for use in places where the phone jack isn't RJ11C (CA11A in Canada) or accessible. This coupler can be included with the communication pack.
Flash memory cards Rumour was going around that the 300s used flash memory cards for the system card These cards could, theoretically, be reused as ATA flash disks. All the other OB300 system cards are one-time programmed ROM, that can't be erased and reused. This is now confirmed.
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Omnibook 425
Mini FAQ This is the unofficial FAQ. URL is FAQ. Also includes a news archive.
Drop test on a 425 3 foot to tarmac. Slid 8 foot. No problems.
Internal modem (Part Number HP F1040A) This modem has an internal microphone on it. The 3.5mm jack is for use with an acoustical coupler - for use in places where the phone jack isn't RJ11C (CA11A in Canada) or accessible. This coupler can be included with the communication pack.
System Diagnostics To get into the system diagnostics, press ON and ESC at the same time...wait a bit and the diagnostics screen will appear.
Megahertz XJ1144 14,400 PCMCIA modems problem There is a possibility that this modem will only work correctly if inserted into a PCMCIA slot called COM1 or COM2. You can do this at reset-power-on time.
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Omnibook 430
Mini FAQ This is the unofficial FAQ. URL is FAQ. Also includes a news archive.
Substitute Battery AA-size (Mignon) NiCad rechargables from Philips (1100mAh capacity is important!) originally for a telephone can work in this model of Omnibook. Though the handbook warns about using anything else than the expensive one-way Lithium-mignons instead of the original-accu-pack, the battery indicator showed roughly 60% capacity after insertation - which seems perfectly correct - and it ran smoothly for 80 minutes until there was only 1 bar left in the energy-indicator. Cheap (US$13) NiCad-accus (hardly self-discharging) with hardly any memory-effect (as Philips says...) that give you up to 90 minutes extra time.
Internal modem (Part Number HP F1040A) This modem has an internal microphone on it. The 3.5mm jack is for use with an acoustical coupler - for use in places where the phone jack isn't RJ11C (CA11A in Canada) or accessible. This coupler can be included with the communication pack.
Recovery Diskette HP quotes F-1037-609031 as the partnumber for the disk, but this is incorrect. Make backups of the diskette, because HP don't seem to want to provide the original item.
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Omnibook 530
Replacement Floppy Cable Make up a male to female ribbon cable, with the wires for pins 1 and 15 swapped (pin 1 is the end wire, and pin 15 is the fourth wire in). Then, cut the wires for pin 23 and 24 someplace at least an inch or so from the male end (pin 24 is the fourth wire, and pin 23 is the sixth wire, in from the non-pin 1 side of the cable). Pull the wires back towards the male end enough to strip them, then strip and join the two wires, insulating and soldering them as desired, to fasten the male pin 23 and male pin 24 together. They cannot feed thru to the female end of the ribbon cable.
Internal modem (Part Number HP F1040A) This modem has an internal microphone on it. The 3.5mm jack is for use with an acoustical coupler - for use in places where the phone jack isn't RJ11C (CA11A in Canada) or accessible. This coupler can be included with the communication pack.
Linux on the 530 It'll run. The "doslinux" distribution will work (the one where you boot DOS, and then start Linux from there). The big problem is that the PCMCIA controller used in the OB models is not supported by the Linux PCMCIA code. That means no networking.
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Omnibook 600C(T) - Discontinued
EEPROM BIOS Update for Win95 Download the file w95upen.exe from hp.com. Read the instructions first!
Familiarization Guide Download from hp.com. File is a 2028KB PDF document.
Function keys under Win3.X The section for the function keys is in the WIN.INI file...just go in and either add or change the function definitions with any text editor.
Function keys under Win95 After you install Windows 95, the function keys (FN+F1 through FN+F12) are undefined. To set up one of the FN-keys for starting an application, first create a Windows 95 shortcut for the application. Then, in shortcut properties, on the Shortcut tab, set up a shortcut key for FN plus one of the F1-F12 function keys.
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Omnibook 800
Port Replicator for the Omnibook 800 These maybe hard to find, but you can try EMT. They have had 600s and at one time had 800 docking stations. They may not have sold out yet. good luck.
Service Manual Download from hp.com. This is a 4329KB self-extracting Word document.
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Omnibook 2000
Service Manual Download from hp.com. File is a 4088KB self-extracting Word document.
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Omnibook 3000
Service Manual Download from hp.com. File is a 2202KB PDF document.
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Omnibook 4000 - Discontinued
Familiarization Guide Download from hp.com. File is a 1931KB self-extracting Word document.
Warning! The 4000 uses a Phoenix BIOS and PHDISK. PHDISK is a disk partitioning program. It is used to create an invisible "save-to" partition at the end of the hard drive. It can blow away your existing partition table (read-lose data) if you attempt to create a partition on a hard drive that does not have enough continuous unpartitioned drive space available for it. For more information on PHDISK, contact Christopher Erickson
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Omnibook 5000 - Discontinued
Familiarization Guide Download from hp.com. File is a 2027KB self-extracting Word document.
Docking System Familiarization Guide Download from hp.com. File is a 1347KB self-extracting Word document.
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Omnibook 5500 - Discontinued
Internal CD-ROM The F1346A 4X CD-ROM drive originally sold for the OB5500 is discontinued, but the F1347A 10X CD-ROM drive sold for the OB5700 is still available, and will also work on the OB5500. The newest F1387A 20X Omnibook CD-ROM drive is not compatible.
Docking System Familiarization Guide Download from hp.com. File is a 1347KB self-extracting Word document.
Service Manual Download from hp.com. File is a 4088KB self-extracting Word document.
Save to disk function in 5500CT The save-to-disk file creation program name is either 0VMAKFIL.EXE (first character is a zero) or PHDISK.EXE. Run the program (this example is for 0VMAKFIL.EXE) from a DOS reboot, not from a DOS window in Win95. The program is not in the DOS path, so you will have to change to the OMNIBOOK subdirectory. Defragment the hard drive from Win95 first. The program automatically creates a correct-sized save-to-disk file on the hard drive, based on the amount of installed RAM. If a save-to-disk file already exists, the program will correctly resize the file. Wait for the program to finish. Reboot the computer using CTRL-ALT-DEL to enable the save-to-disk function. You should see a screen message during every Win95 bootup that announces a valid save-to-disk file was found. Note that the save-to-disk file is in your main disk partition, and is not a separate partition as on the OB4000 computer. To initiate a save-to-disk operation press the Fn + F12 keys. A text screen will appear that counts up to RAM size as the contents of RAM are copied to the hard drive save-to-disk file, then the computer turns off completely. When you next press the blue power button, the computer detects the presence of a save-to-disk session and restores the active Win95 session from that file.
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Omnibook 5700
Service Manual Download from hp.com. File is a 4088KB self-extracting Word document.

Kieran's material is Copyright 1998 Kieran Garbutt. All information and graphics contained on this page are the authors own work and ideas unless otherwise stated.