Yamaha Mo 8 Manual

Appendix
221Owner’s Manual
Display Messages
Display Messages
LCD IndicationExplanation
Are you sure ? [YES]/[NO]Confirms whether you want to execute a specified operation or not. Press [INC/YES] or [DEC/NO] as required.
Arp memory full The internal memory for Arpeggio data is full, preventing storing the recorded sequence data as an Arpeggio.
Arpeggio type storedThe current Arpeggio type has been stored to one of the [SF1] - [SF5] buttons. 
Bad USB deviceThe USB storage device is unusable. Format the USB...

Appendix
Display Messages
222Owner’s Manual Please stop sequencer.The operation you’ve attempted to execute cannot be done during Song/Pattern playback. 
Power on mode storedThe setting of the program number automatically selected when turning the power on has been stored. 
Read only file.You have attempted to delete, rename, or overwrite a read-only file.
Receiving MIDI bulkThe MO is receiving MIDI bulk data.
Recording stoppedThe recording has been stopped since the memory became full.
Scene & Arpeggio...

Appendix
223Owner’s Manual
About MIDI
About MIDI
MIDI (Musical Instrument Digital Interface) is a standard which allows electronic musical instruments to communicate with 
each other, by sending and receiving compatible Note, Control Change, Program Change and various other types of MIDI 
data, or messages.
This synthesizer can control other MIDI devices by transmitting note related data and various types of controller data. It can 
also be controlled by incoming MIDI messages which automatically...

About MIDI
224Owner’s Manual
Appendix
CHANNEL MESSAGES
Channel messages contain data related to the performance 
on the keyboard for the specific channel.
■ Note On/Note Off (Key On/Key Off)
Messages which are generated when the keyboard is 
played.
Reception note range = C-2 (0) – G8 (127), C3 = 60
Velocity range = 1 – 127 (Only the Note On velocity is 
received)
Note On: Generated when a key is pressed.
Note Off: Generated when a key is released.
Each message includes a specific note number which...

225Owner’s Manual
About MIDI
Appendix
Decay Time (Control #075)
Messages which adjust the AEG decay time set for each 
Part. The value set here is an offset value which will be 
added to or subtracted from the voice data.
Effect1 Depth (Reverb Send Level) (Control #091)
Messages which adjust the send level for the Reverb effect.
Effect3 Depth (Chorus Send Level) (Control #093)
Messages which adjust the send level for the Chorus effect.
Data Increment (Control #096)
Decrement (Control #097) for RPN...

About MIDI
226Owner’s Manual
Appendix
■ Pitch Bend
Pitch Bend messages are continuous controller messages 
that allow the pitch of designated notes to be raised or 
lowered by a specified amount over a specified duration.
■ Channel Aftertouch
Messages which let you control the sounds by the pressure 
you apply to the keys after the initial striking of the keys, 
over the entire channel.
This synthesizer does not transmit this data from the 
keyboard; however, this synthesizer does properly respond 
to this...

Appendix
227Owner’s Manual
Troubleshooting
Troubleshooting
If you hear no sound or a strange sound, first check the items described below and take appropriate action. You may be 
able to solve the problem by resetting the instrument to the factory settings (page 26). (Make sure to back up any important 
data to an external device first.)
If the problem persists, consult your Yamaha dealer.
■ No sound comes from the speakers.
•Are all four Control sliders set to appropriate levels (other than zero or...

Appendix
Troubleshooting
228Owner’s Manual
•When the Song/Pattern produces no sound, is the Velocity Offset parameter in the Groove display set appropriately?
■ Playback continues without stopping.
•When the [ARPEGGIO ON/OFF] button is turned on, press it so that its lamp is turned off. 
•When in the Song/Pattern mode, press the [J] (Stop) button.
•When the click sound continues, check the following settings. If the parameter is set to “all,” set it to something other than 
“all.” 
■ Distorted sound....

Appendix
229Owner’s Manual
Troubleshooting
•When the Performance/Song/Pattern produces a wrong pitch, is the Note Shift or Detune parameter of each Part set to a 
value other than “0”?
•When the Performance/Song/Pattern produces a wrong pitch, is the Note Offset parameter in the Groove display set to a 
value other than “0”?
■ No effects are applied.
•Is the [EFFECT BYPASS] button turned off?
•Are the Knobs (for REVERB and CHORUS) set to appropriate levels (other than zero or minimum)? 
•Have any or all...

Appendix
Troubleshooting
230Owner’s Manual
■ Song/Pattern (Phrase) cannot be recorded.
•Is there enough free memory for recording? The total memory capacity determines the number of Songs/Patterns 
(phrases) that can be recorded. For example, if the memory contains Songs/Patterns (phrases) that use up a large 
amount of memory, the memory may become full even though the available Pattern or Song numbers are not all used. 
•In the Pattern Record mode, does the specified track to which the Phrase is...