Ruth
This should give you the System Version of your G-70:
With the power on, press MENU.
Touch the screen for “UTILITY”
Then touch “INFO”
Gary
The G-70 is an older Roland TOTL Arranger Workstation.
It was the Yamaha "Tyros" of its day. It was the successor
of the G-1000, which I am still using. There are a couple of
guys over on the General Arranger Forum that are still gigging
with their G-70's. These things are built like tanks, but they
weigh about the same.
https://www.roland.dk/products/g-70/