HP PAVILION NX9005 - Manual (Page 32)

Service Manual Product Information 1-25
Table 1-8. Functional Structure Description
Bootup CPU module
Motherboard
Hard disk drive
Floppy drive Main processor (MMO)
Primary system circuitry, system BIOS
First source of disk-based startup code
Second source of disk-based startup cod.
Processor CPU module
Motherboard Main processor, numeric data processor, L1 and L2 cache
Primary system circuitry
Memory Motherboard
SDRAM module Video RAM (XE4500)
Changeable SDRAM (2 slots), video RAM (XE4100)
Power Battery
Motherboard
Switchboard PCA
AC adapter Power storage
AC adapter socket, reset button, lid switch, power supply, power control circuitry
Power button
AC-to-DC converter
Display Motherboard
SDRAM module
Display assembly Graphics controller, video RAM
Display output, backlight, power converter for backlight
Hard disk Motherboard
Hard disk drive Hard disk controller
Hard disk mechanism
Floppy drive Motherboard
Floppy drive I/O controller, floppy connector
Floppy drive mechanism
Keyboard Motherboard
Switchboard PCA
Keyboard Keyboard BIOS, keyboard controller
Power switch, one-touch buttons
Key switches
PS/2
TouchPad Motherboard
Top case Keyboard circuitry, keyboard controller, keyboard BIOS
Touch pad sensor, Select buttons, controller (PS/2 output)
Audio Motherboard
Speaker assembly Audio controller, audio decoder, speaker amplifier, microphone, external audio
jacks, headphone amplifier, audio-off switch
Speakers
Status Motherboard
Switchboard PCA
Top case LED circuitry, keyboard controller
Keyboard LEDs
Main status LEDs
Serial Motherboard I/O controller, serial connector
Parallel Motherboard I/O controller, parallel connector
Infrared Motherboard
IR PCA I/O controller
Infrared transmitter/receiver
PS/2 port Motherboard PS/2 connector, keyboard controller
USB Motherboard Bus controller (South Bridge), USB connector
S-Video Motherboard I/O controller, S-video connector (certain models)