MSD-72 Series User’s Guide338.6 Locking and Unlocking key lockPress and hold the “UNLOCK” key for 2 seconds or longer to set/cancel keylock for keys below. You will heara long beep sound and then the following message is displayed for 1 second. Operation Lock can be set anddone by group.・OPERATION LOCK ! (Locked)・OP LOCK RELEASE ! (Unlocked)【See: 9.16.1 Operation lock mode】Menu/operation keysControl command execution keysInput channel selection keysDISPLAY POWER keysPress and hold the “UNLOCK” key for 2seconds or longer to set/cancel key lock[Figure 8.5] Keys to be set/cancel operation lock (MSD-7204UHD)
