Toshiba Qosmio F20 (PQF22) - Manual (Page 232)

10-16 User’s Manual
Troubleshooting
External monitor
Refer also to Chapter 9, Optional Devices , and to your monitor’s
documentation.
Modem
Problem Procedure
Monitor does not turn
on
Make sure that the external monitor’s power
switch is on. Confirm that the external monitor’s
power cable is plugged into a working power
outlet.
No display Try adjusting the contrast and brightness controls
on the external monitor.
Press hot keys Fn + F5 to change the display
priority and make sure it is not set for the internal
display.
Display error occurs Check that the cable connecting the external
monitor to the computer is attached firmly.
If problems persist, contact your dealer.
Problem Procedure
Communication
software can’t initialize
modem
Make sure the computer’s internal modem
settings are correct. Refer to Phone and Modem
Properties in the Control Panel.
You can hear a dial
tone but can’t make a
call
If the call is going through a PBX machine,
make sure the communication application’s tone
dial detection feature is disabled.
You can also use the ATX command.
You place a call, but a
connection can’t be
made
Make sure the settings are correct in your
communications application.
After making a call you
can’t hear a ring
Make sure the tone or pulse selection in your
communications application is set correctly.
You can also use the ATD command.
Communication is cut
off unexpectedly
The computer will automatically cut off
communication when connection with the
carrier is not successful for a set time interval.
Try lengthening this time interval.
A CONNECT display is
quickly replaced by NO
CARRIER
Check the error control setting in your
communications application.
You can also use the AT\N command.