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Some keys no longer working or playing sounds (Axiom Series)
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Q: All of the keys on my Axiom Series keyboard were working, but now some of the keys are no longer working or playing sounds.

A: Follow these troubleshooting steps to resolve this issue.

By adjusting the Zone Range, it is possible to limit the range of active keys on the keyboard for a particular zone.  To set the range of a zone to cover the entire keyboard:

  • Press the Zone Range button.  The LED in the Zone/Group mode is automatically selected
  • The LCD display will flash the symbols representing all zones which are currently active, and will therefore be affected by this range setting.  The Range symbol will also appear on the LCD display.  Use zone buttons 1 thorough 4 (1-3 on Axiom 25) to change this selection as necessary.
  • Press the lowest key on the keyboard to select the lower limit of the zone.  The note number is displayed in small digits on the LCD display.
  • Press the highest key on the keyboard to select the upper limit of the zone.  The note number is displayed in large digits on the LCD display.

Once two keys have been pressed, the keyboard will automatically return to normal, and the range of the edited zone will be updated.

For more information on Zones refer to section 3.6 in the Axiom User Guide.


If resetting the zone/range does not fix the problem, hold down the + and - buttons simultaneously when powering up the keyboard to reset the device.  Test with MIDI-OX (PC) or MIDI Monitor (Mac) to see if all of the keys are sending MIDI note message to the computer.  If some keys (e.g. 2 keys in all octaves, random keys, or a range of keys) are still not sending MIDI Note messages*, the device is malfunctioning.  Contact the local M-Audio support office or dealer/distributor for repair information.