Synertron Technology Rack-KVM9000, User Manual, Page: 13 / 15

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e. If you want OSD returning back to factory default value, you can execute “SCROLL
LOCK”, “SCROLL LOCK” , “R” keys in order.
Troubleshooting
1. Ensure that all cables are well connected. Label all cables with number for each
respective computer to avoid confusion.
2. The recommended VGA cable distance is 5 meters maximum without ghosting and
degradation. Normally, the cable length is based on the driver capacity of your VGA
card. If you need longer VGA cable, please use VGA extender (Model No. VGA-100,
MAX. 100) to meet your requirement.
3. The recommended PS2 cable distance is 5 meters maximum. Normally, the cable
length is based on driver capacity of your motherboard PS2 port. If you need longer
PS2 cable, please use PS2 extender ( Model No. PS-100, MAX. 100 feet ) to meet
your requirement.
4. The Power Jack polarity is center positive and the power adapter need be DC12V, 1A
or DC9V, 1A.
5. Don’t press any keys on the keyboard while the selected computer is booting up.
Otherwise, it might cause the keyboard error to cause keyboard not being detected at
PC side.
6. The computer boot up fine, but keyboard doesn’t work
l Make sure the keyboard works when directly plugged into the computer.
l Try a different keyboard, but use only 101, 102 or 104-key keyboard.
7. The Mouse is not detected during PC boot up.
l Make sure the mouse works when directly plugged into the computer.
l Make sure the mouse is a true PS/2 mouse. A combo mouse will work just as long as
it is set for PS/2 mode with the correct adapter. Try a different mouse.
l
Avoiding moving the mouse or pressing the mouse buttons when switching ports.
l Avoiding switching ports during shutting down the PC process.
l When you switch one PC port to another PC port, the best scan time setting need to
be set to 5 sec or more. Normally, the VGA monitor change one resolution mode to
another will take one or two seconds. Therefore, the scan time is recommended to
set to above 5 seconds.
8. The power switch is off, but the switch still works fine or power adapter is unplugged
ROM REFLASH