1. The internal problems of the teaching pendant of Nazhi robot mainly include: LCD panel drive circuit problems, LCD panel power supply circuit problems, poor screen line contact, motherboard control circuit problems, etc.
Second, the white screen of the teaching pendant of Nazhi robot may also be poor contact or damage to the video cable.
The solution and maintenance idea of the white screen of the teaching pendant of the robot are:
First of all, to rule out whether it is a line problem, you can replace the line and connect the good Nazhi robot teach pendant with a white screen failure to see if it is still a white screen. If it is still a white screen, it is another problem of the teaching pendant of the robot, most of them are poor contact or faulty other parts of the teaching pendant of the robot, but in most cases, this situation rarely happens, and most of them are connected to a good teaching pendant of the robot, so we can know that it is caused by the failure of the ABB robot teach pendant. The solution to the white screen phenomenon caused by the poor teaching pendant of Nazhi robot is as follows:
1. First disassemble the shell of the Nazhi robot teach pendant, and then check whether the screen cable interface is loose or not connected. After checking, the screen cable is connected normally.
2. Then use a multimeter to measure whether the power supply voltage of the screen cable interface is normal. If the supply voltage is normal, go to step 5; If it is not normal, then check whether the fuse resistor or fuse inductor near the output of the screen cable is open or damaged. If it is damaged, the damaged component can be replaced.
3. If the fuse resistor or fuse inductance near the output end of the screen cable is normal, then check whether the voltage at the output end of the voltage conversion circuit is normal. If the output voltage is abnormal, check the fuse resistor, PWM controller, switch tube, inductor coil, filter capacitor and other components in this power supply circuit, and then replace the damaged components.
4. If the output voltage of the DC-DC voltage conversion circuit is normal, there are damaged capacitors and other components between the output end of the DC-DC voltage conversion circuit and the screen cable interface, and the damaged components can be checked and replaced.
5. If the power supply voltage of the screen cable interface is normal, then check whether the timing signal and driving signal in the LCD panel drive circuit are normal. If it is abnormal, check the output signal, input signal and power supply voltage of the chip that generates this signal respectively to determine whether the driver chip is damaged. If it is damaged, it can be replaced.
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