Casio CTK-2200 - LCD Display Test

CTK-2200
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D. LCD CHECK
D-1. Press the “2” button to select the “LCD CHECK”.
D-2. Press the “2” button and check to see if all LCDs are lit.
D-3. Press the “2” button and check to see if all LCDs are turned off.
D-4. Press the “0” button to return to the main screen.