Dell Latitude C800 - Manual (Page 76)

double-click Control Panel.)
l
Double-click the PC Card (PCMCIA) icon.
Ensure that the card is listed in the PC Card (PCMCIA) Properties window.
If you still have problems with a Dell-provided PC Card, call Dell for technical assistance. If you have problems with a
non-Dell-provided PC Card, call the card manufacturer.
Modem, Fax, and
Internet Connection
Problems
If you can connect to
your Internet service
provider (ISP) and send or
receive a fax, your modem is
functioning properly. If you
are sure that your modem is
working properly and you still
experience problems
connecting to your ISP,
contact the ISP technical
support department for
assistance.
NOTICE: Connect the modem to an analog line only. Using a nonanalog line, such as a digital or private
branch exchange (PBX) line, will damage the modem.
NOTICE: Do not confuse the modem and network connectors on your computer. Do not plug a telephone
line into the network connector.
Basic Checks:
l Ensure that you have touch-tone telephone service.
l
If you have call-waiting service, disable call-waiting. Refer to your local telephone directory or call your telephone
service provider for information on temporarily disabling call-waiting.
l If you have voice mail service, you may hear an irregular dial tone when you have messages. Contact your
telephone service provider for information on restoring a normal dial tone.
l If you have any other telephone devices plugged into this line, such as answering machines, dedicated fax
machines, or line splitters, bypass them and plug the modem cable directly into the telephone connector on the
wall.
l
Reseat the cable connections.
l Try a different cable; if you are using a cable that is 10 feet or more in length, try a shorter one.
l
Disconnect the cable from the modem and plug it directly into a telephone. Listen for a dial tone.
l Line noise can cause low connection speeds. If you have persistent problems, try connecting the modem to a
different telephone connector. You may also wish to contact your telephone company to report the problem.
If you still have problems with a Dell-provided modem, call Dell for technical assistance. If you have problems with a
non-Dell-provided modem, call the modem manufacturer.
No Image Appears on
Display
Extended graphics
array (XGA) displays
support 1024 x 768 pixels,
and super extended graphics
array plus (SXGA+) displays
support 1400 x 1050 pixels.
If your application program
uses a higher resolution, you
must attach an external
video graphics array (VGA)
monitor to your computer.
Basic Checks:
l If the display is blank, the computer may be in suspend or standby mode. To resume normal operations, press
the power button.
l If the display is blank and the light is on, the display may have timed out. In this case, press any key on the
keyboard or move the mouse to resume normal operation.
l If the light is blinking, connect the AC adapter to the computer or replace the battery.
l
Adjust the brightness .
l If your computer is attached to an external monitor, press <Fn><F8> to switch the video image to the display.
If the computer is receiving power, but nothing appears on your display (such as light, text, or graphics) or the display
image does not appear as you would expect, fill out the
Diagnostics Checklist as you perform the following steps.
1. If the computer is running, press any key on the integrated keyboard. Is the full display readable?
Yes. The computer was in standby or suspend mode. The problem is resolved.
No. Go to step 2.
2. Is an external monitor connected to the computer?
Yes. Go to step 3.
No. Go to step 4.
3. Press the <Fn><F8> key combination. Is the full display readable?
Yes. The problem is resolved.
No. Go to step 8.
4. Turn off the computer and any attached devices. Disconnect all devices from the computer.
5. Make sure that the
AC adapter is firmly connected to the computer and to an electrical outlet, or verify that a fully
charged battery is properly seated in its bay.
6. Turn on the computer. Is the display on?
Allow one minute for the computer to initialize its components.
Yes. Go to step 7.
No. Go to step 9.