Yamaha U3-SILENT Servicehandleiding - Pagina 19

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TEST MODE, ADJUSTMENT

[1] Key Sensor Adjustment

A) Measurement of All Keys

1) Startup

Switch on the power source while pressing the three lowest F#(10), G#(12), and A#(14) keys.

A tone will be sounded every other second (waiting mode)

2) Start of rest value reading

Press the damper pedal.

If the tone does not change, wait a moment; then, repeat the procedure.

The tone will change to sounding twice a second.

Then, the mode will change to the rest value reading mode.

3) Rest value reading

Confirm that the key is in the rest position.

If it is not, adjust the key to the rest position.

4) Fixing the rest value

Press the damper pedal.

The rest value of the key will be fixed and the tone will change to sounding three times a second.

Then, the mode will change to the end value reading mode

5) End value reading

Press the keys lightly one by one in order as far as the end key.

(The same key may be pressed more than once because the minimum value is internally memorized.)

6) Fixing the end value

Press the damper pedal.

The end value of the key will be fixed, and the tone will change to sounding every other second as before.

7) Flash memory writing

Press the soft pedal.

The tone will die away and writing will start.

The writing will be completed in about 10 seconds; then, the high tone will sound three or four times.

(If the writing fails, the error key is shown by NG key sound alternating ("re" and "do") in the high tone.

(Reference)

Rest value: indicates that the keyboard is not pressed.

End value: indicates that the keyboard is lightly pressed to the bottom of the key.

B) 1 key measurement

1) Start up

Switch on the power source while pressing the two lowest F(9) and G(11) keys.

The tone will sound twice a second. *Note 1

Press the key to be adjusted.

The tone will change to the tone of the key to be adjusted. *Note 2

Note 1: If the tone is consonant ("do", "mi", "so", and "do"), the writing has already been done in the table.

If the tone is dissonant, the writing has not been done in the table.

Note 2: One key measurement requires the same procedure as for the measurement of all keys.

If more than one key is to be measured, press the next key and repeat the steps 3-6 and then proceed to 7).

2) Measurement

The measurement procedure is the same as the steps from 3) for all key measurement.

SILENT SB SERIES