1. Open RDWorks.
2. Access “Vendor param”, click “Other’, and check that “Enable protect” is ticked. (as shown)

If the box has been ticked, unplug the wire from the Dr-proc port (or the wire from the interlock port) of the signal input terminal on the mainboard, and test again.

• If the laser is no longer being fired and an error code is being displayed, replace the open cover protection sensor with a new, identical one.
• if the laser is still being fired and no error code is being displayed, Replace the mainboard with a new, identical one.