Brother DCP T300の印刷問題の解決方法を教えてください

You can try the solutions listed on the Brother website, try the troubleshooting methods described in the manual or user's manual, do your own research on the Internet, or try other methods that might improve the problem even if they are not listed on the Brother website. If you have tried everything until you think there is nothing more you can do to solve the problem, then you probably have an internal problem.
If you have tried everything and still cannot solve the problem, then the problem is probably internal. If the problem persists even after unplugging the power and plugging it back in a few minutes later, it is almost impossible to recover the printer. There are rare cases where unplugging the power for a few days and reinstalling the printer driver have improved the problem, so this is just for your reference.

If you encounter "Initialization failure XX", "Scanning failure AF", or "00 failure XX", please refer to the following page.
If the problem is not solved by referring to the following pages, there is almost no way to fix it by yourself.
Unfortunately, it will have to be repaired. If the product has already passed the period of availability of performance parts for repair, it cannot be repaired and will have to be replaced.
If the problem occurs shortly after purchase, the possibility of an initial defect is very high, so please consult with the store where you purchased the product.