The printer can not print out, and the black bar is displayed, in order to solve this problem, if you have the ability to do it and the conditions allow, you can follow the operation of the next aspect.
Step 1: Make sure that it is not caused by the print settings or the output reason. Sometimes, if you don't get the print settings or output right, you won't be able to print it.
Step 2: Determine if you have selected the right printer. Locate the print list in the print settings to see if the selected printer is the printer device you want to output.
Step 3: If everything is done correctly, but it still can't be printed, you can try to unplug the data cable and plug it back in.
Step 4: If the problem has not been solved by this step. Then, there is a high chance that the printer will malfunction. There are several reasons for this:
1.The toner cartridge is faulty. Usually, there is a black bar when printed, which is caused by a faulty toner cartridge. However, it will not cause anything to be printed.
2.Faulty heating elements. If the heating element fails, it will affect the work, and it is very likely that the printed content will not be displayed, but in this case, the probability of black bars appearing on the printed paper is very small.
3.Laser failure. This is the least likely cause, and usually a laser failure will result in a completely black paper.
In summary, if the printer can't print content, consider the print settings first, then the toner cartridge, and finally the heating components. If the printing settings are incorrect, it will not be able to print and the machine will not work; If there is a problem with the toner cartridge, the device has printing work, and the paper is not clean, and the printed content will not be displayed completely; Heating elements and lasers are the least likely to fail.