Expansion Base Problems - HP OmniBook 510 - Notebook PC Reference Manual

Troubleshooting and Maintenance
Troubleshooting Your Computer
If HP Presentation Ready does not switch to your video settings
• If you're using an external monitor that isn't a plug-and-play device, open Control
Panel Display and set up a monitor that supports the video settings you intend to use
for your presentation.
If one or more display pixels look bad
TFT display manufacturing is a highly precise but imperfect technology, and
manufacturers cannot produce displays that are cosmetically perfect. Most, if not all, TFT
displays exhibit some level of cosmetic imperfection. These cosmetic imperfections may
be visible under varying display conditions, and can appear as bright, dim, or dark spots.
This issue is common across all vendors supplying TFT displays in their products and is
not specific to the HP notebook display.
HP notebook TFT displays meet or exceed all HP standards for cosmetic quality of TFT
displays. HP does not warrant that the displays will be free of cosmetic imperfections.
TFT displays can have a small number of cosmetic imperfections and still conform to
HP's cosmetic quality specifications, including the following:
• No more than 6 pixels remain on (always one color, such as white, red, green, or blue
dots).
• No more than 6 pixels remain off (always dark).
• No more than a total of 8 pixels stuck on or off.
• No other stuck pixel within 15 mm of a stuck pixel.
Contact HP Customer Care if you have a display quality problem and require a more
comprehensive explanation of HP display quality—see "To contact HP for support or
service" on page 145. We expect that over time the industry will continue to produce
displays with fewer inherent cosmetic imperfections, and we will adjust our HP
guidelines as these improvements are implemented.

Expansion base problems

If you can't dock the computer or it gets stuck
• Plug in the AC adapter.
• Use the emergency undock latch—see "To undock the computer" on page 78.
110 Reference Guide