Riso GR1700 is giving Error C60 meaning the Safety Switch is Turned On, Now my problem is how do u turn it off Because i cant fined it

SOURCE: Problem on Riso GR1700

Sometimes it is a one way pully inside the drum that is slipping.This is a mission to repair.
If you want to try it let me know.

SOURCE: What does the error code E 01 stand for?risograph 4050

E 01 means the main engine was locked

SOURCE: Can you use Riso GR1700 drums in a GR2700 or

The masters and ink should work. Cannot remember if the drum does. Put in the duplicator it will either fit or it won't. It will not damage the machine unless you try to force it in. If compatible it will slide right in and the machine will recognize it when you close the front door.