अनुबाद - अंग्रेजी-जापानी - An error has occurred. Press F2 for verbose mode.

needed for a little project

LIterally:
An error has occurred. If you push the F2 key, (the present mode will) change to the verbose mode.
As for Verbose mode = 冗長モード, I found it here:
http://x68000.q-e-d.net/~68user/cgi-bin/wwwboard.cgi?log=3556