Call Center:

 

Repair Center:

 

Repair Center:

 

Symptom

 

Suggestions

 

Likely Causes

 

Comments

 

Display

 

 

 

 

 

 

 

Dark display, no

 

Make sure notebook is turned

 

Display cable

 

Check cable connections.

 

light.

 

on and warmed up.

 

connection.

 

Replace SDRAM modules.

 

 

 

Check power supply.

 

SDRAM modules.

 

Make sure CPU module is

 

 

 

Make sure SDRAM modules

 

CPU module.

 

installed properly, replace

 

 

 

are installed properly.

 

Display assembly.

 

CPU module.

 

 

 

Adjust display brightness.

 

Motherboard.

 

Check display cable

 

 

 

Press Fn+F5 several times.

 

 

 

connections, replace display

 

 

 

Try external monitor.

 

 

 

assembly.

 

 

 

 

 

 

If external monitor displays

 

 

 

 

 

 

 

 

 

 

 

 

 

 

no image, replace

 

 

 

 

 

 

 

motherboard.

 

White display.

 

Adjust display brightness.

 

Display assembly.

 

 

 

 

 

 

 

Switchboard PCA.

 

 

 

Erratic display.

 

 

 

Display cable

 

Check display cable

 

 

 

 

 

connection.

 

connection.

 

 

 

 

 

Switchboard PCA.

 

 

 

 

 

 

 

Display assembly.

 

 

 

 

 

 

 

Motherboard.

 

 

 

Bright or missing

 

See quality statement on

 

Display cable

 

Check display cable

 

pixels or lines.

 

page 5-2.

 

connection.

 

connection.

 

 

 

 

 

Display assembly.

 

See quality statement on

 

 

 

 

 

 

 

page 5-2.

 

Punctured display.

 

 

 

 

Declared to be caused by

 

 

 

 

 

 

 

customer abuse.

 

Vertical crack near

 

 

 

Usually caused by

 

Declared to be caused by

 

center of display.

 

 

 

closing display with

 

customer abuse.

 

 

 

 

 

pencil-sized object on

 

 

 

 

 

 

 

keyboard.

 

 

 

Scratched display

 

 

 

 

 

Declared to be caused by

 

glass.

 

 

 

 

 

customer abuse.

 

Local area of dark

 

 

 

Caused by excessive

 

Declared to be caused by

 

or light discoloration

 

 

 

pressure applied to

 

customer abuse.

 

visible when display

 

 

 

area on screen.

 

 

 

is on.

 

 

 

 

 

 

 

External display

 

Check connections.

 

External display.

 

 

 

does not work.

 

Press Fn+F5 several times.

 

Motherboard.

 

 

 

 

 

Try display on another

 

 

 

 

 

 

 

computer.

 

 

 

 

 

Hard disk

 

 

 

 

 

 

 

Hard disk never

 

Check power source.

 

Hard drive or

 

If drive case is damaged,

 

spins.

 

Remove and reinstall hard

 

connector.

 

drive may not operate

 

 

 

drive. Check connector.

 

Motherboard.

 

properly.

 

Hard disk makes

 

Back up disk immediately.

 

Hard drive.

Check notebook and drive for

 

clunking or

 

Was notebook or drive

 

 

 

evidence of customer abuse.

 

scratching noise.

 

dropped?

 

 

 

 

 

Hard disk makes

 

Back up disk immediately.

 

Depends on noise

 

 

 

buzzing or whining

 

Check hard disk installation.

 

source.

 

 

 

noise.

 

Check for alternate noise

 

 

 

 

 

 

 

sources, such as PCMCIA

 

 

 

 

 

 

 

drive or fan.

 

 

 

 

 

3-10 Troubleshooting and Diagnostics

Service Manual

Page 83
Image 83
HP 2100, 1100 manual Dark display, no

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.