Casio PX-130 Service Manual & Parts Manual page 39

8. Key check
1. Press the "FUNCTION" button.
The confirmation chords C4, E4, G4 sound.
2. Press the "FUNCTION" button.
The confirmation chords C4, E4, G4 sound twice.
3. Press the "FUNCTION" button to perform the "Key check".
4. Confirm 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. Confirm 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 confirmation chords C4, E4, G4 sound.
3. Press the "POWER" button to turn off the power.
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