Dusan.

To set up the midi channels so your SD40 'speaks' with your TYROS.

ON SD40:-
* Press MENU
* Touch MIDI
* Touch KEYBOARD AND STYLE
* TOUCH ARRANGER KEYBOARD
* On this screen, you will see the MIDI TRANSMITION settings (default once you enter this menu).
* Touch MIDI RX (RECEPTION) and you will now be shown the MIDI Receive channels.
* Touch the LEFT box (arranger/left channel) and set that to e.g. 2
* Touch the RIGHT box (lead voice) and set that to e.g. 1
* Now press SAVE and save the settings.

ON THE TYROS 5 (OR ANY OTHER KEYBOARD)
* Press FUNCTION
* PRESS MIDI
* TAB over to MIDI RECEIVE
* Scroll down and set the LEFT = 2 (make sure no other track is using number 2)
* Set VOICE 1 to Channel 1
** Make sure you are using the A or B channel that you will connect the SD40 to on the back!

Now, on the Tyros, turn on the ACCOMPANIMENT button but make sure SYNC START is OFF so the TYROS does not start playing it's internal styles when you start playing. You may also turn down the MASTER VOLUME on the TYROS or the STYLE/LOWER parts so that only the SD40 is heard. You can keep the RIGHT voice volumes up so that where needed, you can actually mix both lead voices of TYROS and SD40.

* Test and make sure all is ok.... then save settings on TYROS and SD40 so that when next you turn on the keyboard and module, you won't have to repeat this process again.

Hope this helps.

Thanks,