DF-800/1600 User Manual
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6.
Troubleshooting
1.
The computer boot up fine, but keyboard doesn’t work
PS/2 keyboard or PS/2 mouse port is not designed for Hot Plug. USB
mouse and keyboard can Hot Plug, but need to wait few seconds for
Computer bus emulations.
Don’t press any keys on the keyboard while the selected computer is
booting up. Otherwise it might cause the keyboard error or keyboard is not
detected at Host side.
Make sure the keyboard works when directly plugged into the computer.
Try a different keyboard, but use only 101, 102 or 104-key keyboard.
2.
The Mouse is not detected during PC boot up
Make sure to plug in mouse first, then plug in keyboard.
Make sure the USB or PS/2 mouse works when directly plugged into the
computer.
Avoiding moving the mouse or pressing the mouse buttons when
switching ports.
3.
No video signal display on the remote monitor
Please go to check all of VGA cables & connector and CAT5 cable &
connector are firmly connected.
4.
Video signal is foggy or unclear on the screen
Please check if the VGA connector connected firmly. Check if the VGA
resolution is too high for the length of CAT5 cable being used. If the
problem happened at VGA resolution, to shorten the CAT5 cable length or
reduce VGA resolution.
It is highly recommended to use “optimal CAT5 cable length” to get the
best video quality and not waste unnecessary CAT5 cable.
If the CAT5 Receiver is not connecting a local computer, please make
sure the monitor is grounded properly.
VGA resolution output mismatch with the monitor’s
The KVM switch will provide DDC information to all the PC VGA board. If both
the local console’s monitor and KVM switch are turned on before the PC boot up,
or if the PC boot up faster then the KVM switch, the PC miss the DDC (Data
Display Channel) information that causes the VGA resolution output mismatch
with the monitor’s.
