Recently got a question from someone unable to save patches on his OB-Xa. “Where is the memory protect switch located?”. On the OB-X and OB-Xa, the memory protect switch is located on the main processor board inside the case. To access the switch, you will need to unscrew two screws on the left and right of the synthesizer to lift the front panel and access the board. The switch is located as indicated in the pictures below. On the OB-8, someone finally got a clue and moved the switch to the back panel where it can be accessed without opening the synthesizer.
