HP Omnibook 300 425 430 530 Service Manual

							Part 3
Hardware Repair
· Battery
· Memory
· Hard Disk Drive/Flash Card and
System ROM
· Mouse
· Small Parts
· Display
· Keyboard
· Logic PCA Board
· Paw Carrier
· Other Components
CAUTION:Always provide proper grounding when performing any of the
following repairs.  An electrostatic discharge may cause irreparable
damage to the OmniBook and its components 
						

							46Battery
(End User Replaceable)
All of the monochrome OmniBook models use the same HP Nickel-Metal-Hydride (NiMH)
Battery Pack, part number F1045A (service replacement part number F1045-60901).  However,
for some models, 1.5 V AA batteries can be used in place of the NiMH battery pack.  The
following table lists all of the monochrome OmniBooks and the batteries that can be used safely
in each model.OmniBook 300OmniBook 425OmniBook 430OmniBook 530Flash Disk
Version· NiMH Battery
Pack
· AA Alkaline
· AA Lithium· NiMH Battery
Pack
· AA Alkaline
· AA Lithiumnot applicablenot applicableHard Disk
Version· NiMH Battery
Pack
· AA Lithium· NiMH Battery
Pack
· AA Lithium· NiMH Battery
Pack
· AA Lithium· NiMH Battery
PackWARNING:Do not mutilate, puncture, or dispose of batteries in fire.  The batteries can
burst or explode, releasing hazardous chemicals.
A nickel-metal-hydride rechargeable battery pack must be recycled or
disposed of properly.  Recycle or discard used size-AA batteries according
to the manufacturer’s instructions.
Required Equipment
· none
Removal Procedure
1. Release the two latches on the battery cover on the bottom case, then remove the cover.
Refer to the below illustration.
2. Do one of the following to remove the battery:
· If an OmniBook battery pack is installed, lift it out by its tab.
· If AA batteries are installed in place of the OmniBook battery pack, lift each out
individually. 
						

							47Replacement Procedure
1. To replace the battery, do one of the following:
· To replace the OmniBook battery pack, insert the rounded side of the pack into the
compartment first.  It is not possible to fully insert the battery pack incorrectly.
· To replace AA batteries, orient them as shown by the symbols in the battery
compartment.
2. Replace and latch the battery cover. 
						

							48Memory
(End User Replaceable)
The OmniBook 530 uses a unique memory module that is not compatible with the OmniBook
300, 425, or 430.  The table below summarizes the compatibility of the memory modules for
each OmniBook model.MemoryModuleAccessoryNumberService ReplacementOB 300OB 425OB 430OB 5302-MBF1041AF1041-609014-MBF1042AF1038-609014-MBF1054AF1054-609018-MBF1055BF1055-60002The following illustration provides a visual representation of the physical differences between the
memory module for the OmniBook 300, 425, and 430 and the memory module for the OmniBook
530.Figure 5 - OmniBook Memory ModulesOmniBook 300, 425, and 430OmniBook 530 
						

							49Required Equipment
· Probe (or similar device) for the OmniBook 300, 425, and 430 only
CAUTION:To avoid damage due to electrostatic discharge, handle the memory module
by the edges only.
Removal Procedure
1. Remove the battery and ac adapter from the OmniBook.
2. Slide the memory door off (see below illustration).
 
 
3. Perform the appropriate action for the corresponding OmniBook:
· OmniBook 300, 425, or 430 -- Use a probe or similar device to pull on the small post
located on the front edge of the memory module.
· OmniBook 530 -- Flip out the plastic tab on the memory module and pull the module
out.
Replacement Procedure
1. Insert the memory module into the slot.  (It is not possible to completely insert the memory if
it is upside down.)
· OmniBook 300, 425, 430 -- the small post on the board faces the bottom surface of the
OmniBook.
· OmniBook 530 – the plastic tab on the board faces the bottom surface of the
OmniBook.
2. Press in the module until it seats fully.
3. Replace the slot cover.
4. Replace the battery and press reset.Figure 6 - Removing the Memory Module 
						

							50Hard Disk Drive/Flash Card and System ROM
(End User Replaceable)
The Hard Disk Drives for the OmniBook 300, 425, 430, and 530 can be reimaged if necessary.
If the software is corrupted, or otherwise damaged, on the hard drive, it can be reformatted and
the software reloaded.  Also, if the hard drive fails and must be replaced, a blank hard drive can
be ordered and the appropriate software loaded.  The below procedures indicate the proper
actions necessary for reloading software on each OmniBook model.
For the OmniBook 300 and 425:
1. Place the hard drive into the OmniBook.
2. Reformat the hard drive.
3. Run OBSETUP /F from the System ROM to reload the software onto the hard drive.
For the OmniBook 430:
1. Place the hard drive into the OmniBook.
2. Reboot and press Alt then D to boot from the System ROM.
3. Reformat the hard drive.
4. Reload the software image from a set of OmniBook 430 Recovery Disks.  The Recovery
Disks are available on the HP Internal WW Web at
http://webmcd.cv.hp.com/prodsupp/archive/.
For the OmniBook 530:
1. Place the hard drive into the OmniBook.
2. Boot from the Companion Disk or other bootable floppy disk.
3. Reformat the hard drive.
4. Reload the software image from a set of OmniBook 530 Recovery Disks.  The Recovery
Disks are available on the HP Internal WW Web at
http://webmcd.cv.hp.com/prodsupp/archive/. 
						

							51Required Equipment
· none
Removal Procedure
1. Exit all applications, including Windows.
2. Turn the OmniBook off and remove the battery and ac adapter.
3. Turn the OmniBook over, release the two latches on the bottom of the tray, and pull out the
tray.  See below illustration.
4. Lift the Hard Disk, Flash Card, or System ROM out of the tray.
Replacement Procedure
1. Reverse the above steps to replace the Hard Disk, Flash Card, or System ROM.
2. Replace the battery and ac adapter.
3. Press reset.Figure 7 - Removing Card Slot Tray 
						

							52Mouse
(End User Replaceable)
Required Equipment
· none
Removal Procedure
1. Press the mouse-eject button to eject the mouse.
2. Pull the mouse firmly away from the OmniBook (see below illustration).  The entire mouse
assembly will pull free.
Replacement Procedure
1. Place the end of the mouse “stick” into the mouse housing.
2. Slide the mouse into the slot and firmly push the mouse until it is completely flush with the
side of the OmniBook.Figure 8 - Removing the Mouse 
						

							53Small Parts
(End User Replaceable)
The following small parts are all end user replaceable.
Battery Door
Push the two battery door latches away from the battery door.  Remove the battery door by lifting
up at the notch in the bottom case.  Place the battery door, tab side first, over the battery
compartment.  Slide the two battery latches in place to secure the door.
Battery Door Latch
Once the battery door is removed (see above), the battery door latches will slide out of the
bottom case.  To replace, align the sides of the latches with the groves in the slots.  Press firmly
into place.
Blank Modem Door
Use a flat-blade screwdriver or similar device to press the small latch on the bottom of the blank
modem door.  Pull the door free of the bottom case.  To replace, simply reinsert the door into the
modem slot and press firmly.
Memory Door
Use a flat-blade screwdriver or similar device to pry the memory door from the bottom case.
Replace by aligning the edges of the door with the slots on the bottom case.  Press firmly into
place.
I/O Door
To remove the I/O door, open it fully.  Flex the middle of the door until the side pins clear the
holes in the back case.  Reverse to replace.
Rubber Feet
Place a probe or similar device between the rubber foot and the plastic of the bottom case.  Pry
upward to pop the foot out.  To replace, firmly press the foot into the hole.
PCMCIA Card Tray
Slide the two tray latches toward each other.  Pull the tray out of the card slot.  If present,
remove the PCMCIA card from the tray.  To replace the tray, insert into the appropriate card slot.
Slide the two latches away from each other to secure the tray. 
						

							54Display
(HP Authorized Service Providers Only)
Required Equipment
· Appropriate ESD station
· Torx #6 screwdriver
· 5mm Hexdriver
· Two small flat tip screwdrivers (or similar prying devices)
· Probe
Removal Procedure
1. Remove the battery, ac adapter, mass storage, system card (if applicable), memory module
(if installed), modem (if installed), mouse, and any installed PCMCIA accessory cards.
2. Remove the four Rubber Feet and seven Screws from the bottom case (see below
illustration).Figure 9 - Outer Bottom Case ComponentsScrew
M2x4.6mm(T6)
(Qty 6)Rubber Foot
(Qty 4)Door - BatteryBattery