1. It is necessary to ensure that the printer has a stable working platform and do not place any items on top of the printer.

2. The front cover of the printer must be closed during printing to prevent dust from entering the machine or other hard objects from obstructing the movement of the printer cart.

3. It is prohibited to plug and unplug printer cables with power, as this can damage the printer's printing port and the parallel port of the PC, and in severe cases, even the PC motherboard.

4. If the print output is not very clear, the printer's automatic cleaning function can be used to clean the print head.

5. When the print head is not returned to its initial position and the printer is restarted, the printer will first allow the print head to return to its initial position, and then proceed to clean it, which can cause unnecessary ink waste. The solution to this problem is to regularly wipe off the dust on the guide shaft and lubricate it, using lubricating oil with good fluidity, such as sewing oil, to ensure the cleanliness of the surrounding environment.