Technical Reference
■Troubleshooting
Be sure to check the following table whenever you experience problems with key- board operation.
Symptom |
| Cause |
| Action |
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• No sound when keyboard | 1. | Power supply problem. | 1. | Correctly attach the AC |
keys are pressed. |
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| adaptor, make sure that bat- |
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| teries poles |
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| correctly, and check to make |
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| sure that batteries are not |
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| dead. |
| 2. | Volume is set to 0. | 2. | Press the VOLUME but- |
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| ton. |
| 3. | Headphones are plugged | 3. | Unplug the headphones |
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| into the keyboard. |
| from the PHONES/OUT- |
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| PUT jack. |
| 4. | The POWER/MODE selec- | 4. | Normal play is not possible |
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| tor is in the CASIO CHORD |
| on the accompaniment key- |
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| or FINGERED position. |
| board while the POWER/ |
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| MODE selector is set to |
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| CASIO CHORD or FIN- |
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| G E R E D . C h a n g e t h e |
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| POWER/MODE selector |
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| setting to NORMAL. |
| 5. | Tone “99 PERCUSSION” is | 5. | While “99 PERCUSSION” is |
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| selected and you are press- |
| selected, you can use only |
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| ing keys that are not as- |
| keys to the left of B4. These |
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| signed tones. |
| keys are marked on the con- |
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| sole with illustrations of per- |
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| cussion instruments. |
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• Any of the following symp- | • Low battery power | • Replace the batteries with a | ||
toms while using battery |
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| set of new ones or use the |
power. |
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| AC adaptor. |
•Dim power supply indica- tor
•Instrument does not turn on
•Dim, difficult to read dis- play
•Abnormally low speaker/ headphone volume
•Distortion of sound output
•Occasional interruption of sound when playing at high volumes
•Sudden power failure when playing at high volumes
•Dimming of the display when playing at high vol- ume
•Abnormal rhythm pattern and demo tune play
•Dimming of keyboard lights when notes sound
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