User manual

1. Press the main switch for two seconds.
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The ‘Power&lock’ menu opens up.
2. Use the arrow buttons to select the menu item ‘Lock’ and conrm with ‘SET’ .
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The message ‘System locked’ , appears in the display, the device is getting locked.
After a few seconds, the menu is closed. The symbol appears on the display.
3. Even when the buttons are locked, you can change the output level (volume) using the
arrow buttons.
4. To cancel the key lock, press [SET] until the message ‘System unlock’ appears.
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The keys have their original function again. The symbol is no longer visible.
Locking or unlocking the but‐
tons
Operating
column PT
37