Computer Graphics (VGA)/Stereo Audio Matrix Switcher
12. Troubleshooting & Maintenance
1) When the output image in the destination device connected to the MVG Matrix has ghost, such as
the projector output with ghost, please check the projector’s setting or try another high quality
connection cord.
2) When there is a color losing or no video signal output, it may be the unmatched VGA connector
order between the input and output end.
3) When the remote controller doesn’t works:
A. Maybe the battery is run out of, please change a new one.
B. Maybe the controller is broken, please ask the dealer to fix it.
4) When user can not control the MVG Matrix 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.
5) When switching , the beeper beeps but without any output image：
A. Check with oscilloscope or multimeter if there is any signal at the input end. If there is no
signal input, it may be the input connection cord broken or the connectors loosen.
B. Check with oscilloscope or multimeter if there is any signal at the output end. If there is no
signal output, it may be the output connection cord broken or the connectors loosen.
C. Please make sure the destination device is exactly on the controlled output channel
D. If it is still the same after the above checking, it may be something wrong in the switcher.
Please send it to the dealer for fixing.
6) If the output image is interfered, please make sure the system is earthed well.
7) If the static becomes stronger when connecting the BNC connectors, it may be due to the incorrect
earthing of the power supply, Please earth it again correctly, and otherwise it would bring damage
to the switcher or shorten its natural life.
8) If the Matrix can not be controlled by the keys on the front panel, RS232 port or remote controller,
the host may has already been broken. Please send it to the dealer for fixing.
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