ADL GT40 - Experiencing Noise after Connection of USB Cable; Power Suddenly Cuts out and Power Lamp Fails to Light; Is It Possible to Record Instruments Using a Microphone?

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Q12.  Experiencingnoiseaftercon nec t ionofUSBcable:
Computerswitchingadaptorscanbeasourceofnoise.Trychangingthecomputersswitchingadaptor.
Thiswasprobleminpastlots.Thishasbeencorrected.
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Q12. Soundfromonlyonechannelandnoiseisexperienced:
Playback from computer source is  normal and
 noise is experienced when playback via line in ja cks. Problem with
unit’sphonoorlineinputjacks.
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Q13.Powersuddenlycutsoutandpowerlampfailstolight.ProblemsstilloccursafterchangingACadaptor:
Defectiveunitfrom2
nd
lot.
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Q14. CanaMCcartridgewithoutputof0.5mV(1kHz、5cm/sec.)beuse dwiththeGT40?
GT40’slineinputisMC=0.4mV、MM=5mV,sonoproblem.
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Q15. Isitpossibletorecordinstrumentsusingamicrophone?
IfthemicrophonecomponenthaslineoutputjacksthenitispossibletoconnectwithGT40’slineinputjacks
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Q16. NoiseisexperiencedduringrecordingofanalogsignalviaUSBconnection:
Pastlotshadthisproblem.Ithasbeencorrectedincurrentlots.
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Q17. Whenheadphonesarepluggedinanoiseisexperiencedwhentheon/offswitchispressed:
Thisisnormal.ThenoiseheardissmallamountofDCvoltagecomingoutoftheoutputjackswhenthepoweris
switched
on.Thiswillnotaffectheadphonesatgenerallistingvolume.
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