Casio PX-130

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8. Key check
1. Press the "FUNCTION" button.
The conrmation chords C4, E4, G4 sound.
2. Press the "FUNCTION" button.
The conrmation chords C4, E4, G4 sound twice.
3. Press the "FUNCTION" button to perform the "Key check".
4. Conrm that a test tone (approx. 500 Hz) sounds from the left speaker while a key is pressed half way.
Check all white and black keys.
5. Conrm that a test tone (approx. 500 Hz) sounds from the left speaker and a high-pitched test tone
(approx. 2 kHz) sounds from the right speaker while a key is pressed completely.
Check all white and black keys.
6. Press the "POWER" button to turn off the power.
9. Flash Memory check
1. Boot the diagnostic program.
2. Hold down the "ELEC PIANO" button for 2 seconds.
The "ELEC PIANO" LED illuminates instantaneously, and the conrmation chords C4, E4, G4 sound.
3. Press the "POWER" button to turn off the power.