HP Omnibook 500 Service Manual

HP Omnibook 500 Product Information 1-15
Audio System Computer:
Built-in speaker.
3D-enhanced PCI bus audio with Zoomed Video support.
Built-in microphone.
Separate audio-off button with indicator light.
Headphone-out and microphone-in.
Expansion base:
CD player (can play with or without computer docked).
Stereo sound via three built-in speakers.
Analog pass-through from the computer.
Headphone-out, microphone-in, and audio line-in.
Keyboard and
Pointing Device84/85/87-key touch-type QW ERTY keyboard...

1-16 Product Information HP Omnibook 500
Security FeaturesUser and administrator passwords.
System, hard drive, and docking passwords.
PC identification displayed at boot.
DMI-accessible electronic serial number.
Kensington MicroSaver lock slot.
Environmental Limits
Operating temperature: 5 to 35 
°C (41 to 95 
°F).
Operating humidity: 20 to 90 percent RH, 5 to 35 
°C (41 to 95 
°F).
Operating altitude: up to 3000 m (10,000 ft) at 25 
°C (77 
°F).
Storage temperature: –20 to 50 
°C (–4 to 122 
°F).
Major...

HP Omnibook 500 Product Information 1-17
 Table 1-8. Omnibook 500 Series Accessories
AccessoryDescriptionOmnibook
500
Compat.
6000
Compat.
900B
Memory
F1457B 64-MB SDRAM module (PC100)
•••
F1457C 64-MB SDRAM module (PC133)
•••
F1622B 128-MB SDRAM module (PC100)
•••
F1622C 128-MB SDRAM module (PC133)
•••
F1654A 256-MB SDRAM module (PC100)
•••
F1654C 256-MB SDRAM module (PC133)
•••
Hard Drives
0950-4030 7.5-GB hard disk drive
•
0950-4011 7.5-GB hard disk drive
•
0950-3934 10-GB hard disk drive
•
0950-3985...

1-18 Product Information HP Omnibook 500
AccessoryDescriptionOmnibook
500
Compat.
6000
Compat.
900B
8120-6312
8120-6313
8120-6314
8120-6316
8120-6317
8120-8367
8120-8373
8120-8452
8120-8699Replacement power cord (Australia)
Replacement power cord (U.S./Canada/Taiwan)
Replacement power cord (Europe)
Replacement power cord (Japan)
Replacement power cord (India/South Africa)
Replacement power cord (Argentina)
Replacement power cord (China)
Replacement power cord (Chile)
Replacement power cord (UK [EPSR]...

HP Omnibook 500 Product Information 1-19
Internal Design
The motherboard PCA is the central component of the computer’s design, and plays a role in virtually
all system functions. Most components connect directly to the motherboard.
The following figure shows the connections among the replaceable components in the computer and
expansion base. In addition, Table 1-9 on page 1-20 lists the roles that these components play in the
functional subsystems of the computer and expansion base.
 
 Figure 1-11....

1-20 Product Information HP Omnibook 500
 Table 1-9. Functional Structure
Function Components Used Component Roles
BootupMotherboard
Hard disk drive
Removable deviceMain processor, primary system circuitry.
First source of disk-based startup code.
Second source of disk-based startup code.
ProcessorMotherboard Main processor, numeric data processor, L1 and L2 cache, primary system
circuitry.
MemoryMotherboard
SDRAM modulesVideo RAM.
Changeable SDRAM (2 slots).
PowerMain battery
Motherboard
Switchboard...

HP Omnibook 500 Removal and Replacement 2-1
2 
Removal and Replacement
This chapter tells you how to remove and replace the computer’s removable components and
assemblies. The items marked by 
• in the following table are user-replaceable.
 Table 2-1. Removal Cross-Reference
 
Battery, backup (page 2-34).
Battery, CMOS (page 2-34).
 
• Battery, main (page 2-4).
Cable, hard drive/LED flex (page 2-34).
 
• Card, mini-PCI (page 2-14).
Case, bottom (page 2-25).
Case, top (page 2-23).
 
• Cover, SDRAM (page...

2-2 Removal and Replacement HP Omnibook 500
Disassembly Flowchart
The following diagram shows the general “path” you will use in disassembling the computer to access
components.
 
* Also remove these components when removing the motherboard or bottom case.
‡ Also remove this component when replacing the top case.
 Figure 2-1. Disassembly FlowStart
Main battery, AC adapter
Power button panel
Keyboard
Display assembly
Top case
Motherboard or
bottom case 
Hard drive/LED flex cable
 Backup battery
...

HP Omnibook 500 Removal and Replacement 2-3
 Table 2-2. Required Equipment
 
• #0 Phillips screwdriver, preferably magnetized.
 
• Small flat-blade screwdriver.
 Table 2-3. Recommended Screw Torques
Screw Thread SizeTorque (cm-kgf)Torque (in-lbf)
M2 1.3 – 1.8 1.1 – 1.5
M3 3.0 – 3.5 2.6 – 3.0
  Caution
 
Be careful not to overtighten screws that go directly into magnesium components, or you could
strip the threads in the magnesium. 

2-4 Removal and Replacement HP Omnibook 500
Removing the Main Battery
(User-Replaceable)
One or two plug-in modules can be inserted in the module bays in the expansion base. The computer
itself has no module bays.
Required Equipment
 
• None.
Removal Procedure
 
• Slide the battery’s release latch, then lift the battery out of its compartment.
 
 Figure 2-2. Removing the Main Battery
Reassembly Note
 
• Insert the front end of the battery into the battery compartment, then press the back end in until it...