MIDIROCK.XYZ
Fix / Arturia KeyStep

KeyStep sequencer won’t run on its own

Play is pressed, but the sequencer or arpeggiator waits instead of running.

Manufacturer documented
Fast answer

Check the rear sync switches. If KeyStep is set to USB, MIDI or Sync In, it is waiting for that clock source. Select Internal for standalone operation.

Try these checks

  1. Read the rear-panel sync diagram and select Internal for a standalone test.
  2. Choose a stored sequence or arpeggiator, then press Play and play the required keys.
  3. If external sync is needed, select the matching input and start that source’s clock.

Diagnose it

Is an external sync mode selected?

Yes: Supply that clock or select Internal.

No: Check the sequence and playback mode.

What should happen

Standalone playback uses KeyStep’s tempo; an external mode follows its selected clock.

Why this happens

External sync modes depend on incoming timing and do not use the Rate knob as a running master tempo.

If it still doesn’t work

Check the connections and settings described above. If your device behaves differently, email us with its model, firmware version and the steps you tried.

All KeyStep fixes
References

Sources & review

Sources reviewed: . Documentation does not replace a physical hardware test.

Sections reviewed: §1.3.7; §6.1–6.2.