Matrix Switching System
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User Manual
32
9.0 Troubleshooting
1. What to do if the HDMI matrix front panel keys switching not responsive?
Answer:
The HDMI matrix front panel keys employ scanning testing and require longer
response time. Press the keys for 2 seconds and then release. This way, key
switching will be responsive in operation.
2. What to do if matrix does not display or color display is abnormal after hot plug?
Answer:
Switching of the matrix system goes through the IC chips. If the voltage
difference between the input signal equipment and the matrix equipment is
too large, hot plug could easily cause damage to the IC chips. Please turn
off power to the system before plugging or unplugging.
3. What to do if loss of color reproduction happens or no video signal output?
Answer:
Please check if connectors at both ends of the HDMI signal cable are correctly
connected.
4. What to do if the serial port (usually refer to the computer serial port) fails to control the
HDMI matrix?
Answer:
Check that the communication port set by the control software is correctly
connected to the corresponding serial port of the equipment. Also, check if
the computer communication port is in good order.
5. What to do if the corresponding graphics fail to output during HDMI matrix switching?
Answer:
(1) Check if there is signal on the input end. If there is no input signal, it could be that the
input connection cable is broken. You are advised to replace the connection cable.
(2) Check if the output port number is the same as the controlled port number.
(3) If none of the above circumstances happen, it could be internal failure of the product
itself. Please contact factory technical engineer.
6. What to do if you sense the power leakage during plugging or unplugging of the
input/output ports?
Answer:
It could be that the equipment power is not properly grounded. You must
properly ground your equipment; otherwise product life can easily be
shortened.
