Electronic Keyboard User Manual

Table Of Contents

Appendix > Troubleshooting

Troubleshooting

If during use any of the following problems should occur,

carefully examine the instrument to see if you can find out

what the problem is, and try resolving it by following the sug-

gestions below. If the instrument will still not function prop-

erly refer to your dealer or to an Authorized Korg Service

Center.

Polyphony

The C-720 contains sampled sounds, which have been record-

ed, analyzed and processed from the actual sounds of the orig-

inal musical instruments. These sounds usually consist of one

or more different samples reproduced by pressing a key. Each

sample is played back by a single oscillator. Sounds using just

one oscillator have a full polyphony of max. 62 voices, while

sounds using two oscillators have a limited polyphony of max.

31 notes. Sounds using more oscillators have a more limited

polyphony. When the number of notes exceeds the limit of the

sound, some notes will be stopped, so that the new ones can be

heard.

Furthermore, when playing in Layer mode with more than two

notes, the max. polyphony depends on how many oscillators

are used in total.

Please refer to the table on page 68 for more information

about the number of oscillators used by each sound.

Problem Possible remedy Page

The instrument

will not turn on.

Check that the AC adapter is correctly

connected to the piano and the out-

let.

No sound. (1) Make sure that the volume is not

set on 0. If it is, bring it up to an ade-

quate level.

(2) Make sure there is not a jack

plugged into one of the PHONES con-

nectors. This would turn the internal

speakers off. if so, unplug the jack.

(3) Make sure that the MIDI Local

function is not set on OFF. If it is, set it

to ON (or turn the instrument off and

then on again).

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