HOW TO CLEAR ERROR CODES ON RISO COPYPRINTER HIGHLY SPEED
1. The drums can not be manual released on a MZ due to the fact they are motorized for positioning.
2. T98-006 code is "FRAM checksum error", it's possible the power failure may have damaged a board. Was the unit surge protected?
3. Have you tried: turning off the unit, hold the yellow reset button down while turning it back on and holding for few seconds? number one Riso error code reset procedure
Let me know how that works.