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Troubleshooting
CP1 Owner’s Manual
63
Appendix
Appendix
Troubleshooting
If you should experience any difficulty with your CP1, such as an inability to produce sound or the output becoming
distorted, work through the following checklists in order to rectify the situation. Alternatively, the Factory Set function (see
page 42) can also be used to resolve problems after first creating a backup of all CP1 data on an external device (see
page 41). If any specific problem should persist, however, please contact your Yamaha dealer or a service center (see
the back of this booklet).
The CP1 produces no sound.
Ensure that a stereo system, an amplifier and speakers, or headphones have been connected to the
CP1.
The CP1 does not come with built-in speakers. In order to hear the sounds that it produces, therefore, you will need to
connect headphones or an external amplifier and speakers (see page 11).
Ensure that the CP1 and the connected audio equipment are turned on.
Ensure that the master volume on the CP1 and the connected audio equipment are not set to an
excessively quiet level.
If a foot controller has been connected to either of the [1] or [2] foot controller jacks, try using it to increase the
volume.
Ensure that MIDI volume or expression has not been set excessively low by an external MIDI
controller.
Ensure that the CP1 has been correctly connected to external audio equipment (such as an
amplifier and speakers).
Ensure that local control has not been turned off.
If local control is turned off and the CP1 is not being used together with a computer or another device returning MIDI
messages, it will not be possible to produce a sound from the internal tone generator by playing the keyboard.
Ensure that at least one of the [PIANO 1] and [PIANO 2] buttons is turned on.
If both the [PIANO 1] and [PIANO 2] buttons are turned off (i.e., not lit), neither Part 1 nor Part 2 will produce any
sound. To remedy this situation, press the [PIANO 1] or [PIANO 2] button and confirm that it lights up.
Ensure that the volumes of the outputs from the Pre-Amplifier units and the Power-Amplifier /
Compressor blocks are not fully turned down.
Press the [UTILITY] button Navigate to the fourth page using the [L PAGE] and [PAGE R] buttons Turn Knob 3 to set Local to
“on” Press [STORE] button and store settings (see pages 38 and 58).
Press and hold each [PRE-AMPLIFIER] button (for at least one second) Turn Knob 6 to set the Volume parameter (see page 45).
Press and hold each [POWER-AMPLIFIER / COMPRESSOR] button (for at least one second) Turn Knob 6 to set the Output
parameter (see page 49).
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