Hello. Good day. We are having this same problem after we replaced a Servo Board on a VS-640i. The problem with the old Servo Board was that was not operating the Solenoid for the Cutting Tool. We set the new Servo Board and got the message: "PRESS THE POWER KEY TO CLEAN". We powered on and got the :Service Call Error 0330". We checked everything. All the connections and everything was ok. We checked the Choke Valves Solenoids and also the Choke Motor. Also we checked the fuse F1 on the Servo Board as suggested in another Post in Signs101. The F1 fuse was ok. We returned the old Servo Board just to get the machine running again without cutting option but also with the old Board we got the same 0330 Error. We bought another Servo Board (Original, Not OEM) and got the same error when turn on the machine. We have checked all the cables, sensors, motors, even the MTF2005F ICs on the Servo Boards (old and new ones). We tried upgrading and downgrading the Firmware (versions 2.3 and 2.40). Initialized all the System Parameters and get the parameters back and also we tried with others VS640i's parameters but still the same problem. Any help please.