Can't write programs or global settings
Is the GLOBAL page PROTECT setting OFF?
If the edited program or global setting did not remain, did you use knob
 to specify the data to be saved when you executed the Write opera-
Arpeggiator will not start
Is the arpeggiator on ([ARP ON] key lit)?
Is the arpeggiator assigned to a timbre?
Is the MIDI page "CLOCK" setting correct?
No response to MIDI messages sent from an external device
Is the MIDI cable or USB cable connected correctly?
Does the MIDI channel of the data transmitted from the external MIDI
device match the MIDI channel of the microKORG XL+.
Does not respond correctly to MIDI messages sent from an exter-
Is the MIDI FLT page parameter for that type of MIDI message set to
Transpose, velocity curve, and arpeggiator data is not recognized
Is the GLOBAL page "POSITION" set appropriately?
Can't control two timbres on separate MIDI channels
The microKORG XL+ uses only one MIDI channel to transmit and
receive when the COMMON page "VOIC.MODE" is set to SINGLE,
LAYER, or SPLIT. You can use two MIDI channels to play the two tim-
bres independently only when COMMON page "VOIC.MODE" is set to