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M300 Owner's Manual-English - Lexicon

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300 V 3.0 <strong>Owner's</strong> <strong>Manual</strong>Troubleshooting<strong>Lexicon</strong>This chapter is intended primarily to help you recognize some common errorstates which can be corrected from the 300 front panel, or by simple means suchas cable replacement. Any error states which are not covered here should bereferred to your local dealer for service by a qualified technician.Low VoltageIn a low-voltage, or "brown-out" condition, the 300 will freeze in its current state.None of the controls will have any effect. When power returns to a normal levelthe unit will reset itself as though it had just been powered on. If the unit doesnot reset itself, turn the power OFF, then ON to resume normal operation.OverheatingTemperature extremes may cause the 300 to exhibit unpredictable behavior. Ifthe unit as been subjected to temperatures below 32°F (0°C) or above 95°F(35°C), it should be turned off and allowed to return to normal temperaturebefore use. The unit may be damaged by exposure to temperatures below -22°F(-30°C) or above 167°F (75°C), or by exposure to humidity in excess of 95%. Ifa unit exposed to such conditions fails to operate after it returns to a normaloperating temperature, contact your local service representative.Common MIDIProblemsThe 300 doesn't respond to MIDI Program Changes.Check the PARAM MIDI channel on the MIDI Control page in Control mode andcheck the Table Mode setting on the same page. The Table Mode should be setto FIX or TABLE. Also check MIDI In/Out connections between the units.The 300 doesn't respond to Controller messages when using DynamicMIDI ® .Check the PARAM MIDI Channel number on the MIDI Control page in Controlmode and check the patches in MOD Edit mode. Also check MIDI In/Outconnections between the units.The 300 doesn't respond to SysEx commands.Check the SYSTEM MIDI Channel on the MIDI Control page in Control mode.The 300 does not send MIDI parameter changes.Check the Automation mode on the MIDI Control page in Control mode. Thisshould be set to SYS EX or NON-REGISTERED PARAMS.8-2

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