M-Audio ProKeys 88sx manual Troubleshooting, Warranty Terms Warranty Registration

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ProKeys 88sx User Guide

Troubleshooting

The ProKeys 88sx has been designed to give you high performance and professional quality audio. It has been tested under a wide range of systems and operating conditions. However, there are a virtually limitless number of operating scenarios, any of which may affect your system’s performance. Though this section cannot cover all possible issues you may encounter, we would like to offer you some suggestions for dealing with common problems.

If you are connecting to a computer, we recommend that you avoid connecting too many devices to your computer at the same time. The more devices you have connected to the computer, the greater the load on the computer’s CPU. Although it is possible in theory to chain multiple USB devices together, doing so may degrade your system’s performance.

If you are experiencing clipping or distortion:

<Turn the volume slider down. You may be overloading the input of the audio device you have connected the ProKeys 88sx to.

<If you are recording the audio from your ProKeys 88sx on a computer, the distortion may be due to the audio settings of your computer’s sound card. This can be corrected by either increasing the audio buffer size used by your soundcard, or trimming its input gain levels. Refer to the user manual for your computer sound card for more information.

My ProKeys 88sx suddenly stopped working after having performed well since installation on a computer.

<Switch off the unit and leave it off for 10 seconds. Then restart your computer, power up your ProKeys 88sx and try again. If the problem persists, you may have to reinstall the drivers for the unit. The latest drivers are available at http://www.m-audio.com.

I have plugged in a Sustain pedal to my ProKeys 88sx, but it works backwards.

<The polarity of the Sustain pedal is calculated by the ProKeys 88sx when it is powered up. On power up, the Sustain pedal is assumed to be in the off position. So, if you want the Sustain pedal to be off when it is not depressed, make sure not to press the pedal when you power up. To reverse the pedal polarity, just press and hold the pedal when you power up. Note: this will have to be done each time you power up the ProKeys 88sx.

I have connected the ProKeys 88sx to my computer. When I press a key, there is a delay before I hear any sound.

<This delay is known as latency. Latency with MIDI signals is caused at the computer and is not coming from the ProKeys 88sx. This may be due to the CPU load of the soft-synth you are using. MIDI data is simply control data. MIDI data is read by the soft-synth; the soft-synth then completes a large number of complex calculations in order to produce the sound you hear and all this processing activity takes time. If you already have adjusted the appropriate parameters relating to latency on your sound card, try re-installing the latest drivers for the sound card, or try reducing the buffer sizes of the sound card. If you are using a host application, check its buffer size settings as most applications allow for user adjustment to improve timing.

<If you feel that you may need to upgrade your sound card, please visit http://www.m-audio.com.

Warranty

Warranty Terms

M-Audio warrants products to be free from defects in materials and workmanship, under normal use and provided that the product is owned by the original, registered user. Visit www.m-audio.com/warranty for terms and limitations applying to your specific product.

Warranty Registration

Thank you for registering your new M-Audio product. Doing so immediately both entitles you to full warranty coverage and helps M-Audio develop and manufacture the finest quality products available. Register online at www.m-audio.com/register to receive FREE product updates and for the chance to win FREE M-Audio gear

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Troubleshooting < Warranty

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Contents ProKeys 88sx Introduction What’s in the BoxProKeys 88sx Overview About This ManualControls and Connectors Diagram Function Keys in Edit ModePowering Up Your ProKeys 88sx White KeysSetup Part 1 ProKeys 88sx as a Digital PianoIntroduction Instrument ButtonsVolume Slider Velocity CurveSustain Pedal Sostenuto PedalResetting the Keyboard Master TuningTranspose Buttons OctavePart 2 The ProKeys 88sx as a Midi Controller Minimum System RequirementsWindows XP Mac OS X 10.2.8 or higherDriver Installation Procedure Basic InstallationInstalling the Windows Multi-Client Driver Using the ProKeys 88sx with Your SoftwareLocal Mode Midi ConnectionsMidi Channel Program, Bank LSB, and Bank MSB MessagesTo Send a Bank Change Program InstrumentExtra Controller Messages Midi Controller MessagesController Number Midi Message Use Default CancelData Entry Enter KeysPanic Sustain PedalSostenuto Pedal Pitch Bend RangeIntroduction Midi Out From USB Function Part 3 Using Your ProKeys 88sx within a Midi StudioRecording your Performance on a Sequencer Percussion Sounds and Unsupported Programs Controlling a Sound Module from the ComputerFinally Warranty TroubleshootingWarranty Terms Warranty Registration Contact Technical InfoAppendices Midi Implementation Chart for the ProKeysAppendix a Appendix B Outline of the Function KeysAppendix C Standard Midi Controller NumbersAppendix D Appendix E
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