All-in-one multimedia teaching is the central control module, user interface, PC desktop module, peripheral interface module with audio power amplifier module, control module is composed of VGA signal switching module, weak current signal switching module, high voltage control module, network communication device, a peripheral control interface, the switch module, equipment control panel with the RFID card reader, The core controller connects and controls the VGA signal switching module, the strong current control module, the switch module, the network communication driver, the peripheral control port, the RFID card reader and the equipment control panel, so that the school can save a large part of the space, convenient for the teacher to teach;
What are the common problems of multimedia teaching machine?
1. There is a crash or blue screen during the use process
Need to make sure that is because the computer operating system of the virus caused the computer system collapse, if so, please reinstall the computer operating system to solve the fault, if normal computer operating system, you will need to determine whether the teaching all-in-one memory damage, if necessary, can replace the memory chips;
2. The multimedia teaching machine cannot be turned on
First, confirm whether the power supply of the teaching all-in-one machine is normal, and then confirm whether there is central control signal feedback in the starting of the teaching all-in-one machine. If there is, confirm whether the PC power supply and the starting signal of the teaching all-in-one machine are normal.
3. The touch is not accurate in the process of use
Generally, this situation is caused by too much surface dust, with a dustproof cloth stick a little liquid crystal screen cleaning liquid to wipe the screen clean on the line;
4. The all-in-one can't control the projector
Verify that the projector model and the control command of the projector are correct with the RS232 control line and the way of connecting;
5. Touch is not good, can not touch
Confirm whether the display screen of the all-in-one machine is normal, and then see if it is because the operation panel is not unlocked. If all the above are normal, it may be because of repeated operation that the touch panel of the all-in-one machine crashes. Disconnect the power and plug it in again to solve the problem.
6. Teaching the sound of all-in-one media
It is necessary to confirm whether the audio output of the teaching all-in-one computer is normal. If so, it can be determined that the power amplifier module is abnormal. If the audio output of the all-in-one computer is abnormal, it is necessary to confirm which part of the Bluetooth module and the computer audio player is abnormal, and then solve the problem according to the abnormal parts.
7. The color of the teaching machine is out of order
This problem can be eliminated by replacing the VGA output interface with the VGA connection.
8. The teaching machine appears black screen
If there is no sound or image, it may be because the backlight of the screen does not work. Please first check whether the connection between the high voltage bar and the screen or the motherboard has been disconnected. If it is disconnected, plug in the connection wire, and there may be damage to the high voltage bar or the motherboard.
If is no image or sound, check whether has good power, has opened the power switch, confirm the equipment under the condition of the electricity can not be normal card machine, cut off the power supply for more than ten minutes and then try to restart, if still cannot solve the problem, the general is the motherboard problem, contact the manufacturer to replace the mainboard;
9, the teaching machine appears white screen
If there is sound but no image, please replug the screen line; If there is no image or sound, the main board may be damaged. Please contact the manufacturer to replace the main board. If it is shut down when the white screen, it may be that the motherboard is broken, contact the manufacturer to replace the motherboard;
10. The screen blinks badly
Check whether the voltage of the power supply is stable, whether the driver of the display and the graphics card is abnormal, and whether there is strong magnetic interference around. If it still cannot be solved, please contact the manufacturer for after-sales treatment.
11. Touch positioning is offset
Open the touch screen proofreading program on the desktop of the multimedia teaching machine, complete the installation of the driver software, change the resolution and display mode of the display, change the display area, and then adjust the frequency of the controller;
12. Automatic shutdown occurs in use
Check whether the device is set to automatically shut down, whether the shutdown button is touched by mistake, if not, it may be a problem with the motherboard, you can contact the manufacturer for after-sales treatment of the equipment;