Common faults and maintenance
Chapter10. Common faults and maintenance
◆ When the matrix peripheral image display device has ghosting, such as ghosting
when the projector is not the main problem, in general, may be adjusted without the
right projector or wire quality standards, with the corresponding projector button
to adjust or replace the wire.
◆ When the color loss or no video signal output, audio and video interface may
be bad contact.
◆ When the remote control can not control the matrix:
1.may be the battery is dead, please replace the battery.
2.may be the remote control is broken, please repair.
◆ When the serial port can not control the matrix, check whether the communication
port of the control software is corresponding to the serial port of the connected
device.
◆ There is no corresponding image output when the matrix is switched:
1.check whether the corresponding input signal. (can be used oscilloscope or
multimeter for testing) if there is no signal input, it is possible that the input
line broken or loose joints, try to replace the wire.
2.check the corresponding output signal. (can be used oscilloscope or multimeter
for testing) if there is no signal output, it is possible that the output line is
broken or loose joints, try to replace the wire.
3.check whether the output port number is consistent with the controlled port
number.
4.does not belong to the above three kinds of situations, may host internal fault,
please send professional maintenance.
◆ If the POWER lamp does not light, and the LED is not light, the operation is not
responding, please check whether the power input is good.
◆ The output image is disturbed, it is possible that the input and output devices
do not have good grounding.
◆ When pulling, inserting audio video interface, if you feel there is a clear
static,it is possible that the equipment power supply ground wire is not a good
grounding, according to the correct method of grounding, otherwise easy to damage
the host, shorten the life of the mainframe.
◆ LED light normal, the communication port has a return code, but no image output
or no audio output
1.audio and video interface may be loose, can be replaced.
2.short circuit may be connected, try to replace the wire.
3.possible wiring break, try to replace the wire.
◆ When buttons, communications, remote control can not be controlled, the host may
have been damaged inside, please send for professional maintenance.
