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Troubleshooting
Power does not turn on
• Is the power cable connected to an appropriate AC
outlet? (☞p.7)
• Is the power switch turned on? (☞p.7)
• If the power still does not turn on, disconnect the
power cable from the AC outlet, and contact a
nearby Korg service center.
No sound
• Is the [MASTER VOLUME] slider raised? (☞p.7)
• Have headphones been plugged in? (☞p.7)
• Has the currently selected part been muted?
(☞p.15)
• Make sure that the Local setting is turned ON.
(☞p.17)
Notes are interrupted
• The sounds of the C-4500 are produced by sam-
pling (recording) the sounds of actual instruments,
and processing or analyzing them. Some sounds
play one piece of sampled data when a note is
played (mono), while other sounds play two pieces
(stereo).
The [PIANO 1] sound is stereo, so the maximum
number of notes that can be played simultaneously
(i.e., the polyphony) will be 32 notes, even if the
damper pedal is pressed. For other sounds, the
polyphony is 64 notes.
When using the Layer function to play two sounds
simultaneously, the polyphony will differ depend-
ing on whether the sounds are mono or stereo. For
example if a mono sound that uses one sample is
played together with a stereo sound that uses two
samples, the polyphony will be 21 notes. When
using the Layer function, or when recording
multiple parts on the recorder, be aware of how the
sounds are combined in order to make the most
effective use of the available polyphony.
The pitch or tone of piano sounds is wrong
in certain key ranges
• The piano sounds of the C-4500 are designed to
simulate the sounds of a real piano as accurately as
possible. For this reason, it may sound as though
there is something unusual about the pitch or tone,
such as an emphasis in the overtones of certain
ranges. This is not a malfunction.
Pedal effects do not apply correctly
• Has the pedal connector been disconnected?
(☞p.23)
Cannot record
• Is there sufficient space on the recorder? (☞p.15)
An external device does not respond to
transmitted MIDI data
• Make sure that MIDI cable or special PC connec-
tion cable connections are correct. (☞p.16)
• Make sure that the C-4500 is transmitting MIDI
data on the channel that the receiving device is set
to receive. (☞p.17)
Cannot set the synchronization frequency
• Is the PC/MIDI select switch in the MIDI position?
(☞p.19)
If this is in the MIDI position, the synchronization
frequency will always be set to 31.25 kbps.