Toshiba Portege M400 PPM40C-TD30TEF Users Manual Canada; English - Page 218

Sound system, External monitor

Page 218 highlights

Troubleshooting Sound system Refer also to documentation for your audio devices. Problem Procedure No sound is heard Adjust the volume control dial. Check the software volume settings. Make sure the headphone connection is secure. If problems persist, contact your dealer. Check Windows Device Manager. Make sure the sound function is enabled and that settings for I/ O address, Interrupt level and DMA are correct for your software and do not conflict with other hardware devices that you may have connected to the computer. Annoying sound is heard You may be experiencing feedback. Refer to Sound System in Chapter 4, Operating Basics. If problems persist, contact your dealer. External monitor Refer also to Chapter 8, Optional Devices, and to your monitor's documentation. 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 LCD. Display error occurs Check that the cable connecting the external monitor to the computer is attached firmly. If problems persist, contact your dealer. 9-16 User's Manual

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9-16
User’s Manual
Troubleshooting
Sound system
Refer also to documentation for your audio devices.
External monitor
Refer also to Chapter 8,
Optional Devices
,
and to your monitor’s
documentation.
Problem
Procedure
No sound is heard
Adjust the volume control dial.
Check the software volume settings.
Make sure the headphone connection is secure.
If problems persist, contact your dealer.
Check Windows Device Manager. Make sure the
sound function is enabled and that settings for I/
O address, Interrupt level and DMA are correct
for your software and do not conflict with other
hardware devices that you may have connected
to the computer.
Annoying sound
is heard
You may be experiencing feedback. Refer to
Sound System
in
Chapter 4, Operating Basics.
If problems persist, contact your dealer.
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
LCD.
Display error occurs
Check that the cable connecting the external
monitor to the computer is attached firmly.
If problems persist, contact your dealer.