Table 1-9. Functional Structure Description

Bootup

CPU module

Main processor (MMO).

 

Motherboard

Primary system circuitry, system BIOS.

 

Hard disk drive

First source of disk-based startup code.

 

Floppy drive

Second source of disk-based startup code.

Processor

CPU module

Main processor, numeric data processor, L1 and L2 cache.

 

Motherboard

Primary system circuitry.

Memory

Motherboard

Video RAM (XE4500).

 

SDRAM module

Changeable SDRAM (2 slots), video RAM (XE4100).

Power

Battery

Power storage.

 

Motherboard

AC adapter socket, reset button, lid switch, power supply, power

 

 

control circuitry.

 

Switchboard PCA

Power button

 

AC adapter

AC-to-DC converter.

Display

Motherboard

Graphics controller, video RAM.

 

SDRAM module

Display output, backlight, power converter for backlight.

 

Display assembly

 

Hard disk

Motherboard

Hard disk controller.

 

Hard disk drive

Hard disk mechanism.

Floppy drive

Motherboard

I/O controller, floppy connector.

 

Floppy drive

Floppy drive mechanism.

Keyboard

Motherboard

Keyboard BIOS, keyboard controller.

 

Switchboard PCA

Power switch, one-touch buttons

 

Keyboard

Key switches.

PS/2

Motherboard

Keyboard circuitry, keyboard controller, keyboard BIOS.

Touchpad

Top case

Touch pad sensor, click buttons, controller (PS/2 output).

Audio

Motherboard

Audio controller, audio decoder, speaker amplifier, microphone,

 

 

external audio jacks, headphone amplifier, audio-off switch.

 

Speaker assembly

Speakers.

Status

Motherboard

LED circuitry, keyboard controller.

 

Switchboard PCA

Keyboard LEDs.

 

Top case

Main status LEDs.

Serial

Motherboard

I/O controller, serial connector.

Parallel

Motherboard

I/O controller, parallel connector.

Infrared

Motherboard

I/O controller.

 

IR PCA

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).

Port Replicator

Motherboard

Port replicator logic, port replicator connector (certain models).

PCMCIA

Motherboard

PCMCIA controller.

 

PCMCIA socket

PCMCIA connectors.

Wireless LAN

Mini-PCI

I/O controller, radio, radio frequency circuitry.

(certain models)

Antenna PCAs

Transmit/receive antennas.

 

IR PCA

On/off switch, indicator light.

LAN

Motherboard

LAN circuitry, bus controller, LAN connector.

Modem

Motherboard

Modem circuitry (certain models), modem connector.

1-28 Product Information

Service Manual

Page 34
Image 34
HP 1100, 2100 manual Functional Structure Description

2100, 1100 specifications

The HP 1100 and 1100A are pivotal laser printers developed by Hewlett-Packard in the early 1990s, marking significant advancements in printing technology of their time. Since their introduction, these models have garnered a reputation for reliability and efficiency, making them a staple in many offices.

One of the standout features of the HP 1100 series is its fast printing speed. The printers can produce up to 12 pages per minute, which was an impressive feat at the time of their release. This speed significantly reduced waiting times, allowing users to handle large-volume printing jobs with ease. Furthermore, the printers support a variety of media types, including letterhead, envelopes, and labels, enhancing versatility in print applications.

The HP 1100 and 1100A utilize laser technology, which ensures sharp and high-quality prints. The printers have a native resolution of 600 x 600 dots per inch (DPI), enabling crisp text and detailed graphics. This high-resolution output made the models particularly favored for producing professional documents and presentations.

Another key characteristic is the generous memory capacity. The HP 1100 typically comes with 2 MB of standard RAM, which is expandable, allowing for improved performance in handling complex print jobs. Users can adjust the memory according to their requirements, resulting in better efficiency, particularly in environments that demand high-volume printing.

The HP 1100 series also showcases a straightforward and user-friendly operation. The built-in control panel simplifies the printing process, allowing users to manage jobs intuitively. Additionally, with the inclusion of parallel and later USB connectivity options, integration with various computer systems was seamless, ensuring compatibility with existing office infrastructure.

Energy efficiency is another aspect worth noting, as the printers are designed to consume minimal power when idle, aligning with the growing demand for eco-friendly solutions.

Overall, the HP 1100 and 1100A stand out for their robust construction, high-speed performance, exceptional print quality, and user-friendly features, making them a trusted choice for small to medium-sized businesses in need of dependable printing solutions. Their impact on the printing landscape during the 1990s continues to be felt today, as they paved the way for subsequent generations of laser printers.