If it is used every day and suddenly fails, the flat cable connecting the print head to the motherboard is broken, and 30% is the driver and motherboard problems.
If it doesn't work for a few days, the last time it was used, it was closed properly. This time it can't be used, but the print head is blocked. Now it is commonly used for joint supply, which is prone to this problem.
I suggest you repair simple problems yourself. If the problem is complex, it is recommended to apply for after-sales service.
