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...

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...

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...

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....

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...

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,...

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...