Yamaha S70XS Owner's Manual page 53

 Are the parameter settings such as Element Switch, Part Switch, Note Limit and Velocity Limit appropriate?
[VOICE]  [EDIT]  [MUTE] (lighting)  Number [9] – [16] buttons
[PERFORM]  [PART ON/OFF]
[PERFORM]  [EDIT]  Part selection  Play Mode  Note Limit Lo/Hi
[PERFORM]  [EDIT]  Part selection  Play Mode  Velocity Limit Lo/Hi
 When the Performance/Multi produces no sound, has a Voice been assigned to each Part?
[PERFORM]  [EDIT]  Part selection  Voice
[MULTI/SEQ PLAY] (selecting Multi mode)  [EDIT]  Part selection  Voice
 When the Performance/Multi produces no sound, is the output setting of each Part set appropriately?
[PERFORM]  [EDIT]  Part selection  Play Mode  Output Select
[MULTI/SEQ PLAY] (selecting Multi mode)  [EDIT]  Part selection  Play Mode  Output Select
 When the Multi produces no sound, are the output port/channel of each track in the external sequencer and
the receive channel of each Part in the Multi set appropriately?
[MULTI/SEQ PLAY] (selecting Multi mode)  [EDIT]  Part selection  Voice  Receive Ch
 When the Performance/Multi produces no sound, is the "Arpeggio Play Only" parameter of each Part turned
on?
[PERFORM]  [EDIT]  Part selection  Voice  Arp Play Only
[MULTI/SEQ PLAY] (selecting Multi mode)  [EDIT]  Part selection  Voice  Arp Play Only
No sound from the MIC INPUT jack
 Is the microphone switch turned on?
 Is the cable between the microphone and the synthesizer properly connected?
 Is the [MIC ON/OFF] button set to on (lamp is lit)?
 Is the INPUT GAIN knob turned fully counter-clockwise (to the minimum)?
 Are the volume settings of the A/D Input Part too low?
Selecting "MIC" via the Knob Function button  VOLUME knob
 Are the effect settings appropriate?
[UTILITY]  Voice  A/D FX
[PERFORM]  [EDIT]  Common  A/D FX
[MULTI/SEQ PLAY] (selecting Multi mode)  [EDIT]  Common  A/D FX
 Is the output setting of the A/D Input Part set appropriately?
[UTILITY]  Voice  A/D Out  Output Select
[PERFORM]  [EDIT]  Common  A/D Out  Output Select
[MULTI/SEQ PLAY] (selecting Multi mode)  [EDIT]  Common  A/D Out  Output Select
Split does not work via the external MIDI device
 The settings of the "Split Sw" parameter and "Split Lower/Upper" parameter in the Performance mode work
only when playing the keyboard of the instrument itself.
Troubleshooting
S90 XS/S70 XS Owner's Manual
53