Table 1-9. Functional Structure - HP DesignJet 500 Service Manual

Function Components Used
Motherboard
Bootup
Hard disk drive
Removable device
Processor Motherboard
Motherboard
Memory
SDRAM modules
Power Main battery
Motherboard
Switchboard PCA
Backup battery
CMOS battery
Expansion base
AC adapter
Display Motherboard
Display assembly
Motherboard
Hard disk
HDD/LED flex cable
Hard disk drive
Keyboard Motherboard
Keyboard
Switchboard PCA
Motherboard
Pointer
Keyboard
Top case
Audio Motherboard
Bottom case
Expansion base
Motherboard
Status
Switchboard PCA
HDD/LED flex cable
Top case
Expansion base
Serial Motherboard
Expansion base
Motherboard
Parallel
Expansion base
Infrared Motherboard
Display assembly
Wireless
Motherboard
Switchboard PCA
PS/2 ports Motherboard
Expansion base
Motherboard
USB
Expansion base
Docking Motherboard
Expansion base
Motherboard
PC Card
1-20 Product Information

Table 1-9. Functional Structure

Component Roles
Main processor, primary system circuitry.
First source of disk-based startup code.
Second source of disk-based startup code.
Main processor, numeric data processor, L1 and L2 cache, primary system
circuitry.
Video RAM.
Changeable SDRAM (2 slots).
Power storage.
AC adapter socket, power switch, lid switch, system-off switch, power supply,
power control circuitry.
Sleep switch.
Provides short-term power to maintain memory while swapping main battery.
Maintains system data stored in CMOS RAM.
AC adapter socket, system-off switch, power supply, power control circuitry.
AC-to-DC converter.
PCMCIA/Zoomed Video controller, display drivers, LVDS processing,
display/graphics controller, video RAM.
Display output, backlight, power converter for backlight.
Hard disk controller.
Hard disk signal pass-through.
Hard disk mechanism.
Keyboard BIOS, keyboard controller.
Key switches.
One-Touch switches.
Keyboard BIOS, pointing stick controller (PS/2 output), keyboard controller.
Pointing stick sensor.
Click buttons, scroll button.
Audio controller, audio decoder, speaker amplifier, Zoomed Video controller,
microphone, external audio jacks, headphone amplifier, audio-off switch.
Speaker.
CD player, audio circuitry, speakers.
LED circuitry, keyboard controller.
Keyboard LEDs.
Main status LEDs.
Audio-off LED.
Status panel.
I/O controller.
Serial connector.
I/O controller.
Parallel connector.
I/O controller, infrared transmitter/receiver.
Radio PCA, circuitry, and antennas, on-off button, and indicator light.
I/O controller.
Power/signal pass-through.
Keyboard controller.
PS/2 connectors.
Bus controller (South Bridge), USB connectors, overload switch.
USB connectors, overload switch.
Docking logic, docking connector.
Docking connector, undock switch, emergency undock latch.
PC Card controller, PC Card connector.
HP Omnibook 500