The default System password is“123”. You can
change it to your favorite. You should enter the old
password first, then enter a new one.
3.5.7 Key Setting
The key is a multifunction key,
It can be set as "store the current display
value(Storage)" or "print the recent data (Print)".
"Storage" is default.
3.5.8 Default Setting
When the artificial error, and do not know how to