At the following link you can find a manual on how to connect and configure SongBook+ and Yamaha Genos, PSR-SX700 und PSR-SX900 keyboards:
>> Link to download German version
>> Link to download English version
>> Link to download Czech version
According to feedback from customers, the same connection also works for Yamaha CVP 805 / 809 / 905 / 909.
If you are looking for a manual for Yamaha Tyros or PRS-S series keyboards, please jump to the following page: Manual for Yamaha Tyros and PSR-S series