User`s manual

48 Installing and Using the Axel-VNCviewer
7.1 - THE AX3000 DISPLAY IS BLACK OR DISTORTED
The default VGA frequency used by the AX3000 is 70 Hertz. If the VGA monitor
does not support this frequency the display will be black or distorted (vertical
sync is lost).
To fix this problem either use a more modern monitor (SVGA) or perform one of
the following operations depending on the AX3000 mode (see Chapter 5.3):
a) Real Text Mode
Enter the AX3000 Set up (<Ctrl><Alt><Esc>) and select the
[Configuration]
→
[Advanced]
→
[Tunings]
menu. Within the dialog box select the 'Scan
frequency (VNC)' parameter and press <spacebar> to select the minimum
frequency (60 Hertz).
b) Alpha-GUI Mode
Enter the AX3000 Set up (<Ctrl><Alt><Esc>) and press
<F12>
. The VGA
frequency is set to 60 Hertz and the display becomes visible (this emergency
procedure modifies the VGA frequency only during the set up stage). Then
select the
[Configuration]
→
[Advanced]
→
[Tunings]
menu. Within the dialog
box select the 'Scan frequency' parameter and press <spacebar> to enter the
associated dialog box. The minimum frequency value can be selected (60
Hertz).