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Troubleshooting
If you encounter what appears to be a malfunction, please check the following points before assuming that
your Clavinova is faulty.
1. No Sound When the Power is Turned ON
Is the AC plug properly connected to the Clavinova and an AC wall outlet? Check the AC connection
carefully. Is the MASTER VOLUME control turned up to a reasonable listening level?
Also make sure that a pair of headphones is not plugged into the PHONES jack, and that Local
Control (see page 35) is ON.
2. The Damper Pedal Doesn’t Work
If the damper pedal doesn’t function, or if notes are sustained even when the pedal is not pressed,
check that the pedal cord is properly plugged into the main unit (see page 58:CLP-811, see page
64:CLP-611).
3. The Clavinova Reproduces Radio or TV Sound
This can occur if there is a high-power transmitter in your vicinity. Contact your Yamaha dealer.
4. Intermittent Static Noise
This is usually due to turning ON or OFF a household appliance or other electronic equipment which
is fed by the same AC line as your Clavinova.
5. Interference Appears On Radio or TV Sets Located Near the Clavinova
The Clavinova contains digital circuitry which can generate radio-frequency noise. The solution is to
move the Clavinova further away from the affected equipment, or vice versa.
6. Distorted Sound When the Clavinova is Connected to An External Amplifier/
Speaker System
If the Clavinova is connected to a stereo system or instrument amplifier and the sound is distorted,
reduce the setting of the Clavinova volume control to a level at which the distortion ceases.
7. KSN NG error message appears on the screen.
This message indicates that there is an internal problem. Please contact your dealer for assistance.
CLP-811/611 Troubleshooting