Casio CTK-810

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Message on LCD
4. ROM check
1 Press “2” button. OOK
5. Version check
1 Press “3” button. 708
2 Press “3” button. 190
3 Press “3” button. 180
6. RAM check
1 Press “+” button. AOK
7. Sound check
1 Press the “7” button. L
* When standing in the center, the tester hears the maximum test sound
fromthe left speaker.
2 Press the “8” button. R
* When standing in the center, the tester hears the maximum test sound
from the right speaker.
8. LCD check
1 Press the “STEP1” button.
* All character of LCD turns on.
* There is no lack of the dot and the character.
9. Console LED check
1 Press the “SPEAK” button.
* Keyboard LED must light in the undermentioned order.
1) DATA ACCESS
2) Song controller indicator
3) Rhythm controller indicator
10.USB check
1 Press the “RHYTHM” button. ACT USB
11.APO check
1 Press the “TEMPO!” button.
* Go out from TEST mode (Power off).
* The LCD turns off.
DIAGNOSTIC PROGRAM IS FINISHED.