Toshiba U600D User Manual

User ’s Manual

9-17

Troubleshooting

No sound is heard

Check the software volume settings.
Make sure the headphone connection is secure.
If problems persist, contact your dealer.

Refer also to documentation for your audio devices.

Refer also to Chapter 8, 

, and to your monitor’s documentation.

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.

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.