User manual

DVI Video Processing Switcher 4x4
PTN Electronics Limited 34 www.PTN-electronics.com
8. Troubleshooting & Maintenance
1) When images of terminal unit output with ghost, such as the projector output with
ghost. Generally this is not a unit faulty, this may be caused by an incorrect
setting on the projector or a bad quality of cable. Please check the projector’s
setting or try another high quality connection cable.
2) When there is a color losing or no video signal output, please check the input and
output end connections of the cables.
3) When user cannot control the switcher by computer through its COM port, please
check the COM port number in the software and make sure the COM port is in
good condition, or use the USB interface or the TCP/IP network port.
4) When there is no output images:
 Check if there is any signal at the input.
 Check if there is any signal at the output.
We can check these by using an oscilloscope or a multimeter. If there is no signal
input/output, maybe the input/output cables broken or the connectors loosen,
please change for another cable.
 Make sure the destination device is exactly on the controlled output channel.
 If not the problem mentioned above, probably there is something broken inside
the unit, please send it to the dealer for repairing.
5) If the POWER indicator doesn’t work or no respond to any operation, please
make sure the power cord connection is good.
6) If the output image is interfered, please make sure the system is grounded well.
7) If the static becomes stronger when connecting the video cables, it probably due
to the incorrect grounding, please correct it otherwise it would damage the
switcher.
8) If the switcher cannot be controlled by the buttons on the front panel or any of the
control ports, the switcher may have broken. Please send it to the dealer for
repairing.