TC electronic SDN BHD D22 - Manual (Page 23)

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Preset changes are not seamless
- To obtain perfect seamless update when changing presets, I/O
and Utility settings must be the same in both presets.
You press the POWER switch but there is no light.
- The POWER switch on the rear panel is switched off.
The Input PPM meters do not peak out.
- You are using Analog Inputs, but the Input selector in the I/O
menu is set to Digital in.
- The Analog Input level is set too low.
No sound through the D22.
- You are using Analog Inputs, but the Input selector in the I/O
menu is set to Digital in.
You cannot turn the power off.
- Hold the POWER key pressed for at least 3 seconds.
APPENDIX - Troubleshooting