Mackie 2404 Musical Toy Instrument User Manual


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28
VLZ4 4•Bus
Appendix B: Connections
Appendix A: Service Information
Ifyouthinkyourmixerhasaproblem,pleasecheck
outthefollowingtroubleshootingtipsanddoyourbest
toconrmtheproblem.VisittheSupportsectionofour
website(www.720trees.com)whereyouwillndlotsof
usefulinformationsuchasFAQs,documentationand
anyupdatedPCdrivers,etc.Youmayndtheanswerto
theproblemwithouthavingtosendyourmixeraway.
Troubleshooting
Bad Channel
• IsthechannelEQsetupnicely?
• Isthechannelgainsetcorrectly?
• Isthechannellevelupenough?
• IsthechannelOLledon?
• Isthechannelbalancesetinthemiddle?
• Trythesamesourcesignalinanotherchannel,
setupexactlylikethesuspectchannel.
• Isphantompowerrequiredforyour
microphone?
Bad Output
• Isthemainlevelturnedup?
• AretheEQssettoreasonablelevels?
• Areanyauxreturnsmaxedout?
• Unpluganythingfromtheotherline-level
outputs,suchasmonitorout,justincase
oneofyourexternalpieceshasaproblem.
• Makesurethatyouarenotoverdrivingyour
ampliers.Checktheloudspeakeraverageload
impedanceisnotlessthantheminimumyour
ampliercanhandle.Checkthespeakerwiring.
Noise
• Turnthechannelgainsdown,onebyone.
Ifthesounddisappears,it’seitherthat
channelorwhateverispluggedintoit,
sounplugwhateverthatis.Ifthenoise
disappears,it’sfromyourwhatever.
Power
• ThepowerLEDshouldcomeonifthemixeris
connectedtoasuitableliveACmainsoutlet,
andthepowerswitchison.Checktomakesure
thatthepowercordissecurelypluggedin.
Repair
Forwarrantyservice,refertothewarranty
informationonpage39.
Non-warranty service is available at a factory-
authorizedservicecenter.Tolocatethenearest
service center, visit www.720trees.com, click “Contact
TechSupport”andselect“LocateaServiceCenter
orDistributor”[3].ServiceforVLZ4mixersliving
outsidetheUnitedStatesmaybeobtainedthrough
localdealersordistributors.
Ifyoudonothaveaccesstoourwebsite,youcan
callourTechSupportdepartmentat1-800-898-3211,
Monday-Fridayduringnormalbusinesshours,Pacic
Time,toexplaintheproblem.TechSupportwilltell
youwherethenearestfactory-authorizedservicecenter
islocatedinyourarea.
Balanced XLR Input Connector
The802VLZ4mixerhasthreefemaleXLR
inputs.BesurethecablesarewiredperAES
(AudioEngineeringSociety)standards:
Balanced XLR Input Connector
Pin1–Shield(Ground)
Pin2–Positive(+orhot)
Pin3–Negative(–orcold)
2
3
1
SHIELD
COLD
HOT
SHIELD
COLD
HOT
3
2
1
Balanced XLR Input Connector
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