Yamaha Electone EL-37 Owner's Manual page 99

Problem
VOICES/RHYTHMS
While an Intro./Ending pattern is automatically
playing, the Lower keyboard does not produce
any sound, even when the keys are played.
During use of the Rhythm Pattern Program,
no sound is produced even when you play a
certain percussion sound.
EFFECTS
The Tremolo effect cannot be heard, even
when the TREMOLO (FAST) button in the
DISPLAY SELECT section is on.
ACCOMPANIMENT AND OTHER FUNCTIONS
Despite its volume being set to a suitable
level, the Accompaniment cannot be heard.
The pitch in the Single Finger mode does not
change, even when pressing different keys of
the keyboard.
The harmony notes of the Melody On Chord
function cannot be heard.
REGISTRATION MEMORY
Certain functions have not been memorized
to Registration Memory.
MUSIC DISK RECORDER
Recording or playback cannot be performed.
A total of 40 songs cannot be recorded.
Recording is stopped before the performance
is finished, or the Song Copy function cannot
be executed.
In addition to a recorded performance on the
Upper and/or Lower keyboards, a
performance using a Lead voice cannot be
recorded or played back.
The rhythm does not start at the beginning of
a recording, or stops in the middle of the
performance.
The notes of the recording are "stuck" and
sound continuously.
Possible Cause and Solution
Since the Accompaniment chords play automatically one after another,
the Lower keyboard is designed not to produce any sound during the
play of an Intro./Ending pattern.
If percussion sounds have been recorded to all 16 rhythm tracks, no
subsequently selected instruments can be heard or recorded. If
necessary, erase one of the tracks and play the sound.
Tremolo must be selected first in the Voice Condition display. (See page
27.)
The rhythm has not been started. Be sure to use Accompaniment
together with the rhythm.
Single Finger mode will only produce notes when played within a fixed
octave interval on the Lower keyboard. If notes with the same letter
name are pressed outside of that range, the chords that are sounded will
share the same pitch.
The Upper keyboard has been set to sound only Lead voices. Increase
the volume of the Upper voices.
Transposition and Pitch control data, among others, cannot be
memorized (except as song data). (See page 42.)
1) Problems in recording or playback may be caused by improper operation
of the M.D.R. Refer to the LED Display Messages chart on page 67.
2) The PLAY or RECORD section buttons for selecting parts may be
turned off. Turn on the appropriate PLAY or RECORD buttons.
If some song numbers contain a large amount of recorded data, the disk
may not have enough available memory left to record the normal
maximum of 40 songs.
The amount of recorded data on the disk is close to the maximum limit.
Either use another disk or delete the data of any unnecessary song
number. (See page 64.)
1) When recording, you forgot the following operation: press the
RECORD button, then hold down the SHIFT button while you press the
UPPER button (selecting Lead).
2) During playback, you forgot to set the LEAD PLAY button to on.
The M.D.R. is designed so that the rhythm cannot be started at the very
beginning of a recording. If you wish to use the rhythm, start it after the
available memory display appears on the M.D.R. display.
During playback, you removed the disk by pressing the EJECT button.
Whenever you wish to stop playback, always press the STOP button.
97