Toa DP-SP3 - Manual (Page 18)

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12. INITIALIZING THE DP-SP3
Step 1. Turn off the power switch.
Step 2. Turn on the power switch while continuously holding down the Mute switches 1, 2, and 5.
All the front panel-mounted indicators light, then those except Input and Output level indicators go off.
Step 3. When only the Input and Output level indicators light, release the Mute switches, then these indicators
turn into flashing.
Step 4. While the Input and Output level indicators are flashing, press the Mute switch 3 three times.
All the front panel-mounted indicators go off, and the initialization process starts.
The DP-SP3 restarts after initialization is complete.
Input level indicators
1, 2
2, 3
4
Mute switches
Output level indicators Power switch