我不内行, 对本文是看不懂, 我猜测意思:
Method of fastening the USB Block on board:
warm-up plus tin solder;
Use Electric soldering iron solder the USB Block tail and the position of the pad scraping paint.
or
Use Electric soldering iron solder the USB Block tail and the pad, which have scraping paint.
我无法照你的文句翻译!