Dell Latitude C640 - Manual (Page 66)

Check the printer - Run the printer self-test. If the test does not complete successfully, the
printer is probably defective. Contact the printer manufacturer.
Modem and Internet Connection Problems
NOTICE: Connect the modem to an analog telephone wall jack only. Connecting the modem to a
digital telephone network damages the modem.
NOTICE: Modem and network connectors look similar. Do not plug a telephone line into the network
connector.
Fill out the Diagnostics Checklist as you complete these checks.
NOTE: If you can connect to your Internet service provider (ISP), your modem is functioning properly.
If you are sure that your modem is working properly and you still experience problems, contact your
ISP.
Check the telephone wall jack - Disconnect the telephone line from the modem and connect
it to a telephone. Listen for a dial tone. Ensure that you have touchtone telephone service. Try
connecting the modem to a different telephone wall jack.
Slow connection speeds can be caused by telephone noise as well as by telephone line or
network conditions. Contact your telephone company or network administrator for more
information.
Connect the modem directly to the telephone wall jack - If you have other telephone
devices sharing the line, such as an answering machine, fax machine, surge protector, or line
splitter, then bypass them and use the telephone line to connect the modem directly to the
telephone wall jack.
Check the connection - Verify that the telephone line is connected to the modem.
Check the telephone line - Try using a different telephone line. If you are using a line that is
3 m (10 ft) or more in length, try a shorter one.
Irregular dial tone - If you have voice mail service, you might hear an irregular dial tone
when you have messages. Contact your telephone company for instructions on restoring a dial
tone.
Turn off call waiting (catch-phone) - See your telephone directory for instructions on
deactivating this feature. Then adjust the dial-up networking connection properties.
Windows XP
Click the Start button and click Control Panel. 1.
Click Printers and Other Hardware, click Phone and Modem Options, click the
Dialing Rules tab, and then click Edit.... 2.
In the Edit Location window, ensure that To disable call waiting, dial: is checked, and 3.
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