KORG C-4000 Owner's Manual
![KORG C-4000 manual cover](/images/e336ac3e839f2a4d4f78edcb/thumbs/thumb175x175.webp)
To perform a factory reset on the KORG C-4000, turn off the piano, then hold down the "Function" button while turning it back on. Continue to hold the button until the display shows "Factory Reset". Release the button and confirm the reset by pressing the "Yes" button.
First, check if the piano is properly plugged into a power source. If it is, turn it off and back on to see if the keys start responding. If the issue persists, it might be a hardware problem, and you should contact KORG support or a professional technician.
To connect the KORG C-4000 to external speakers, use the line-out jacks located at the back of the piano. Connect these outputs to the input of your external speakers using appropriate cables, ensuring you match the left and right channels correctly.
Regularly dust the keyboard with a soft, dry cloth to prevent dust accumulation. Avoid using chemical cleaners. For internal maintenance, such as cleaning the contacts or servicing the electronics, consult a professional technician.
To adjust touch sensitivity, press the "Function" button, then use the arrow keys to navigate to the "Touch" setting. Select the desired sensitivity level: Light, Normal, or Heavy. Confirm your selection by pressing the "Enter" button.
Check the volume levels to ensure they are not set too high, which can cause distortion. Also, verify that the cables and connections are secure and not damaged. If the problem continues, try performing a factory reset or consult a technician.
Yes, you can use headphones with the KORG C-4000. Simply plug your headphones into the headphone jack located on the front panel of the piano. This will mute the internal speakers and allow you to play silently.
Press the "Function" button and use the arrow keys to navigate to the "Transpose" option. Adjust the pitch up or down using the plus or minus keys. Confirm your setting by pressing "Enter".
Ensure the power cable is securely connected to both the piano and a working power outlet. Check the power switch and try using a different outlet. If it still does not power on, it may require service from a qualified technician.
To record your performance, press the "Record" button on the control panel, then start playing. To stop recording, press the "Stop" button. You can playback your recording by pressing the "Play" button.