Toshiba A300 - Manual (Page 161)

User’s Manual 9-13
A300/A300D
Sound system
TV output signal
Problem Procedure
No sound is heard Adjust the volume control dial.
Check the software volume settings.
Make sure the headphone connection is secure.
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.
If problems persist, contact your dealer.
Problem Procedure
Display on TV is poor Make sure the TV type is correct for your area:
NTSC (US, JAPAN), PAL (Europe).
No display Try adjusting the contrast and brightness controls
on the external monitor.
Press hot keys FN + F5 to change the display.
Refer to Chapter 5,
The Keyboard .
If problems persist, contact your dealer.
If you turn the computer off in hibernation and sleep mode while the display
is on TV, the computer will select either the internal LCD or an external
computer CRT as the display device.