Yamaha Yamaha PortaTone, EZ-20 owner manual Troubleshooting, Problem Possible Cause and Solution

Page 60

Troubleshooting

Problem	Possible Cause and Solution

When the EZ-20 is turned on or	This is normal and indicates that the EZ-20 is receiving electrical
off, a popping sound is tempo-	power.
rarily produced.

• The volume level is low.	The battery voltage is low. Replace all six batteries with new ones,
• Tonal quality has degraded.	or use the AC adaptor.
• The display indication is
turned off suddenly and the
panel settings are reset.

Noise is produced from the EZ-	When using a mobile phone, noise is produced. Using a mobile
20.	phone in close proximity to the EZ-20 may produce interference.
	To prevent this, turn off the mobile phone or use it further away
	from the EZ-20.

There is no sound even when	Check that nothing is connected to the PHONES/OUTPUT jack on
the keyboard is played or when a	the rear panel. When a set of headphones is plugged into this jack,
song is being played back.	no sound is output.

	When using the Dictionary function (page 52), the keys in the right
	hand section are used only for entering the chord root and type.

The auto accompaniment	When playing back one of the Pianist styles (#89–#100), the
doesn’t turn on, even when	rhythm cannot be heard. The Pianist styles have no drums or bass
pressing the [ACMP ON/OFF]	- only piano accompaniment.
button.

Not all of the voices seem to	The EZ-20 is polyphonic up to a maximum of 16 notes. If the Dual
sound, or the sound seems to be	voice or Split voice is being used and a style or song is playing
cut off.	back at the same time, some notes/sounds may be omitted (or
	“stolen”) from the accompaniment or song.

The accompaniment does not	Make sure that the Accompaniment Volume (page 55) is set to an
sound properly.	appropriate level.

The polarity of the footswitch is	You turned on the power to the EZ-20 while pressing the foot-
reversed.	switch. Turn the power off, then turn it on again without pressing
	the footswitch.

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Contents Page Special Message Section Precautions Main Features Other powerful features include Portable GrandContents Midi Functions About Midi Midi TerminalsSetting Up Power RequirementsUsing an AC Power Adaptor Using BatteriesUsing Headphones Connecting a Keyboard Ampli ﬁer or Stereo SystemUsing a Footswitch Using the Midi TerminalsPanel Controls and Terminals Front PanelRear Panel MN O Playing the Demo Songs Press the Demo buttonStop the Demo song Playing a Single Song Start the SongStop the song Song ListUsing the Lesson Feature Select Timing, Waiting, or Minus One, and start the lessonLesson 1 Timing When you’re finished, stop the Lesson Lesson 2 WaitingLesson 3 Minus One GradePlaying the Piano Playing along with the MetronomePress the Portable Grand button Play the keyboardPlaying the ABC/DoReMi Voices Selecting and Playing Other VoicesPress the ABC/DoReMi button Press the Voice button Select a voice Play the keyboardUsing the Auto Accompaniment Press the Style buttonSelect a section Stop the auto accompanimentLooking up Chords in the Dictionary Press the Dict. buttonWant to find out more? See Adjusting the volume level Power onPanel Display Indications Changing the tempoOverall settings Symbol for pressing and holding down the buttonPressing and holding down Changing the valuePanel Display Indications Selecting a functionName & number indication Song/Style/Voice Selecting a numberAccompaniment On indicator ABC/DoReMi indicatorsMeasure indicator Chord indicatorNotation display Fingering guideSelecting and Playing Songs Listening To a Demo SongSelecting and Playing a Song Press the Song buttonSelect the desired song number Start and stop the song playbackAdjusting the Tempo Tap FunctionSong Volume Level Switching the Light Guide On and Off Multi Pads Select a song that supports the Multi Pads functionStart the song Play the Multi Pads Repeat While playing a song, set point a the start pointSet point B the end point Song Lesson Select one of the Lesson songsSelect the part you wish to work on left, right or both Start the LessonPress the START/STOP button to stop the Lesson Types of LessonABC/DoReMi Guide Grade Talking Talking function includes the following announcementsUsing the Metronome Setting a TempoPortable Grand Setting the Time Signature of the Metronome Adjusting the Metronome VolumePlaying Voices Selecting a VoicePlaying a Voice Press the Voice buttonPlay the selected voice Selecting the ABC or DoReMi voiceTranspose Press the Overall button repeatedly to select TransposeTuning Press the Overall button repeatedly to select TuningAuto Accompaniment Selecting a StyleSelect the desired style number Starting Accompaniment Sync startStart Stopping the Accompaniment Tap startIntro Sync start Changing the Tempo Press the TEMPO/TAP buttonUsing Auto Accompaniment-Multi Fingering Single Finger ChordsCm7 Fingered Chords Fingered Chords in the Key of CPress the Dict. button Specify the root of the chord Specify the type of the chord major, minor, seventh, etcWhat is a Chord? Play a chord, following the Light GuideCaug Cdim Adjusting the Accompaniment Volume Playing a Melody along with the AccompanimentChanging the Accompaniment Section IntroMain EndingAbout the Fill-in Patterns Ritardando ritMidi Functions About MidiMidi Terminals How Can Midi be Used? Troubleshooting Problem Possible Cause and SolutionVoice List Maximum PolyphonySitar Sound Effects&Drum Kit List Bank MSB# 127 Bank LSB# 112 ProgramStyle List & Multipads Style ListMulti pads Midi Implementation Chart YamahaReset All Cntrls Page Speciﬁcations Panel ControlsIndex MiscLimited Warranty North America