Mackie-Acoustics8BUS-mix-sch1 维修电路原理图.pdf

08-11994, 1999 Mackie Designs Inc. All rights reservedMIC/LINE PREAMP BOARD 08 REV SRadioFans.CN 收音机爱 好者资料库This contains all the 8Bus boards, so you can print them all out out once, if your bread is buttered that way.08-21994, 1999 Mackie Designs Inc. All rights reservedMIC/LINE PREAMP BOARD 08 REV SRadioFans.CN 收音机爱 好者资料库 08-31994, 1999 Mackie Designs Inc. All rights reservedMIC/LINE PREAMP BOARD 08 REV S08-41994, 1999 Mackie Designs Inc. All rights reservedMIC/LINE PREAMP BOARD 08 REV S 09-11993,1999 Mackie Designs Inc. All rights reservedCONSOLE CHANNEL BOARD 09 REV USee page 09-10for the schematicof the EQ module990-016-0009-21993,1999 Mackie Designs Inc. All rights reservedCONSOLE CHANNEL BOARD 09 REV USee page 09-10for the schematicof the EQ module990-016-00 09-31993,1999 Mackie Designs Inc. All rights reservedCONSOLE CHANNEL BOARD 09 REV U09-41993,1999 Mackie Designs Inc. All rights reservedCONSOLE CHANNEL BOARD 09 REV U 09-51993,1999 Mackie Designs Inc. All rights reservedCONSOLE CHANNEL BOARD 09 REV U09-61993,1999 Mackie Designs Inc. All rights reservedCONSOLE CHANNEL BOARD 09 REV U 09-71993,1999 Mackie Designs Inc. All rights reservedCONSOLE CHANNEL BOARD 09 REV U09-81993,1999 Mackie Designs Inc. All rights reservedCONSOLE CHANNEL BOARD 09 REV U 09-91993,1999 Mackie Designs Inc. All rights reservedCONSOLE CHANNEL BOARD 09 REV U09-101993,1999 Mackie Designs Inc. All rights reservedCONSOLE CHANNEL BOARD 09 REV U 10-11993,1999 Mackie Designs Inc. All rights reservedOUTPUT BOARD 10 REV U10-21993,1999 Mackie Designs Inc. All rights reservedOUTPUT BOARD 10 REV U 10-31993,1999 Mackie Designs Inc. All rights reservedOUTPUT BOARD 10 REV U10-41993,1999 Mackie Designs Inc. All rights reservedOUTPUT BOARD 10 REV U 10-51993,1999 Mackie Designs Inc. All rights reservedOUTPUT BOARD 10 REV U10-61993,1999 Mackie Designs Inc. All rights reservedOUTPUT BOARD 10 REV U 10-71993,1999 Mackie Designs Inc. All rights reservedOUTPUT BOARD 10 REV U10-81993,1999 Mackie Designs Inc. All rights reservedOUTPUT BOARD 10 REV U 10-91993,1999 Mackie Designs Inc. All rights reservedOUTPUT BOARD 10 REV U10-101993,1999 Mackie Designs Inc. All rights reservedOUTPUT BOARD 10 REV UGAINHIBUS 1BUS 2BUS 3BUS 4BUS 5BUS 6BUS 7BUS 8L-BUSR-BUSL-SOLOR-SOLOAUX 1AUX 2AUX 3AUX 4AUX 5AUX 6L-MIX-BR-MIX-BL/R MIXMIX-B2-TKEXTERNALSUB MASTER 1 & 2AUX SEND 1SOLOCONTROLPHANTOM POWERMIC INLINEINTAPEINFLIPPOSTSOURCEAUX 1AUX 2AUX 3AUX 5AUX 4AUX 6CHANFADERTRIMEQIN/OUTPANLEVELPAN1-23-45-67-8L/RSOLOINPUT1 OF 16 (24) (32)STEREO AUX RETURN 1LEVELBALANCE1-23-45-67-8L/RSOLOLEVELLEVELPHONES 1PHONES 2L/R2-TK INL2-TK INR SUB MSTRFADER(#3 - 8 IDENTICAL)(#2 IDENTICAL)LEVELLEVELAUX OUT SOLOMIX BMASTERMIX-BTOL/R MIXLRL/RMIXFADERMIC MIC LEVELTO AUX 1R BAL OUTPUTSOLOLEVELMONOCONTROL ROOMPAD LOGICLSTUDIOOUTPUTSTUDIOLEVELCNTRL RMLEVELPHONES 2LEVELSOLOPHONES 2SOURCEPHONES 1LEVELMONITORMIX-BEXTERNALAUX 3/4AUX 5/6SOLOEXTERNALMIX-BMONITORPHONES 1OUTPUTPHONES 1SOURCEFREQPREPOSTLEFT(MONO)RIGHTRIGHTLEFT(MONO)LEFT(MONO)RIGHT(PER 8 CHS)+4dBU/10dBV Select+-+-(PER 8 CHANNELS)MIC/LINEINSERTPREPOSTPRE PARAMETRICEQSHELVINGEQMIDQMIDLOLOHIGAINFREQHI/LO EQTO MIX BSPLITPRE EQTO AUX MODSOLOSOLOTO AUX 2TO TAPE/SUBMASTERTO PHONES(AND STUDIO)MONITORSOURCEINSERTSUB MSTRFADERINSERTSOLOL + RSOLOL + RL METERR METERRSTUDIOOUTPUTLCNTRL RMOUTPUTRCNTRL RMOUTPUT(DEFEATED WHENCNTRL RM SOURCEIS SELECTED)(DEFEATED WHENCNTRL RM SOURCEIS SELECTED)AUX OUTAUX SEND 3(#4, 5, 6 IDENTICAL)SOLONOTE: ALL SWITCHES SHOWN IN DISENGAGED (UP) POSITION75HzHPF0LMUTEMIX-BSOURCEPFL MODTALKBACK:MIX-B OUTPUTL MIXR MIXLO CUTIN/OUTOPTIONAL 24E24-CHANNEL MACKIE 8BUSEXPANDER CONSOLETo on-ramp #257 of the Santa Ana Freeway20dBPREPOSTSUB OUTS 1, 9 & 17METER123DIRECTOUT(#2 IDENTICAL)STEREO AUX RETURN 3(#4 IDENTICAL)STEREO AUX RETURN 5(#6 IDENTICAL)L/Rvu123123+-+-INSERTvuGLOBALSELECTCH. OUTINSERT-+-METER+4/-10+4/-10SHIFT+-FLIP SWCHANNEL MIX-B SOURCE MODR UNBAL OUTPUTL BAL OUTPUTL UNBAL OUTPUTOPTIONAL METER BRIDGEPHONES 2OUTPUTLRLR+EXTERNALIN LEXTERNALIN RINSERTSUB OUTS 2, 10 & 18TAPE INAUX 5/6AUX 3/4This was going to be a blank page, but I thought youmight enjoy coloring in this block diagram instead.A free box of crayons to the best entry. 11-11994,1999 Mackie Designs Inc. All rights reservedMETER BOARD 11 REV J11-21994,1999 Mackie Designs Inc. All rights reservedMETER BOARD 11 REV J 12-11994,1999 Mackie Designs Inc. All rights reservedJACK FIELD BOARD 12 REV S12-21994,1999 Mackie Designs Inc. All rights reservedJACK FIELD BOARD 12 REV S 13-11994,1999 Mackie Designs Inc. All rights reservedCONSOLE TAPE OUT BOARD 13 REV S13-21994,1999 Mackie Designs Inc. All rights reservedCONSOLE TAPE OUT BOARD 13 REV S 14-11994,1999 Mackie Designs Inc. All rights reservedCONSOLE TAPE INPUT BOARD 14 REV S14-21994,1999 Mackie Designs Inc. All rights reservedCONSOLE TAPE INPUT BOARD 14 REV S 15-11994,1999 Mackie Designs Inc. All rights reservedPOWER SUPPLY BOARD 15 REV S-18VDC+18VDCDGND+12VDC+5VDCAGND+48VDCBROWN = DGNDVIOLET = +5VDCORANGE = +12VDCYELLOW = +48VDCRED = +18VDCBLACK = AGNDBLUE = -18VDC15-21994,1999 Mackie Designs Inc. All rights reservedPOWER SUPPLY BOARD 15 REV S 19-11994,1999 Mackie Designs Inc. All rights reservedEXPANDER BOARD 19 REV S19-21994,1999 Mackie Designs Inc. All rights reservedEXPANDER BOARD 19 REV S 20-11994,1999 Mackie Designs Inc. All rights reservedPOWER DISTRIBUTION BOARD 20 REV C20-21994,1999 Mackie Designs Inc. All rights reservedPOWER DISTRIBUTION BOARD 20 REV DTOPTOP TRACESBOTTOM TRACES 21-11994,1999 Mackie Designs Inc. All rights reservedEXPANDER OUTPUT BOARD 21 REV S21-21994,1999 Mackie Designs Inc. All rights reservedEXPANDER OUTPUT BOARD 21 REV S 22-11994,1999 Mackie Designs Inc. All rights reservedANALOG METER BOARD 22 REV H22-21994,1999 Mackie Designs Inc. All rights reservedANALOG METER BOARD 22 REV H 23-11994,1999 Mackie Designs Inc. All rights reservedLED METER BOARD 23 REV F23-21994,1999 Mackie Designs Inc. All rights reservedLED METER BOARD 23 REV F 23-31994,1999 Mackie Designs Inc. All rights reservedLED METER BOARD 23 REV F23-41994,1999 Mackie Designs Inc. All rights reservedMETER BRIDGES4. Locate andidentify the hard-ware that came withyour Meter Bridge: I I a. Two (2) slotted screws;I I b. Two (2) collar pieces (Notethat there is a smallpin protruding fromthe bottom of eachcollar piece);I I c. Two (2) Allen head screws;I I d. Two (2) lockwashers;I I e. One (1) allen wrench.5. Remove the plastic caps that coverthe Meter Bridge mounting holeson each side of the Console (Draw-ing A). Feed them to your boa.6. Align the Meter Bridgewith the Console (B) and lower itinto place. Tilt the Meter Bridgeback until it isat rest againstthe Consolechassis (oryour tangle ofpatchcords).Make surethat the meterbridgesmountingholes line upMB16 MB24MB32MBEACongratulations on adding a MeterBridge to your Mackie Designs 8BusConsole. Installation is very straightfor-ward and should take just a few minutes.The only reason weve included so manystep-by-step drawings is because our artdepartment wanted something to do ona rainy day1.INSTALLATION INSTRUCTIONS1. Locate the warranty card and fill itout. If you bought your MeterBridge at the same time you pur-chased an 8Bus series console, youdont need to answer all the ques-tions on the card that came with theMeter Bridge. Just fill in the modelnumber of the Meter Bridge, serialnumber, purchase date and dealer,and your name and address.2. Make sure that your 8Bus Consolepower supply is turned off.3. Remove the Meter Bridge from itsplastic bag. Save the bag. Its handyfor wrapping boa constrictors ormoray eels before popping them inyour freezer. Also, save the box.BMB32/MB24/MB16/MBE8BUS METER BRIDGES1And, since every day except four or five in August arerainy up here in the Northwest Rainforest, they had timeto do quite a nice job.with the consoles mountingholes.7. Hand-insert one collarpiece into each side, withthe “teeth” pointing out(C). Occasionally, the endcaps of the Console will tryto interfere withthis step. Dont getupset. Simply loosen the CONSOLE endcap screws, install the collar and then re-tighten the screws.8. Turn the collars by hand until you feel thepin seat itself (it will stop turning).9. Slide one lockwasher onto each allen-headscrew.10. Secure the collars by inserting an Allen-head screw on each side (C). Take care notto cross-thread the screws or strip thescrewheads. Tighten the Allen screwssecurely.11. Using a hefty screw driver, install a flushscrew almost all the way into each side(Drawing D at right).12. Raise the Meter Bridge as far forward as itwill go.13. On the Console, locate the rubber plugsthat cover the Meter Bridge ribbon cableMB16 Meter BridgeMBE Meter BridgeMB24 Meter BridgeMB32 Meter BridgeCDEsockets. The 328 has five; the 248 hasfour; the 168 and MBE each have three(see epic MondoDrawing E at the top).14. Remove the rubber plugs and feed them tothe afore-mentioned boa constrictor.13. Making sure that the plug and socket arealigned, firmly insert each ribbon cable intoits corresponding socket in the Console (F).Take care to make sure that the cable is nottwisted 180 (sounds insulting to cautionyou against something like this, but weveseen it done.) Unless your fingers aremicrominiature, youll probably need to usethe eraser end of a pencil to press down onthe plug and make sure that it is fullyseated (G).16. Slide the new improved, slotted rubberplugs (that are pre-attached to the ribboncables) down until they fit snugly into therectangular Console holes (Drawing H).17. Adjust the Meter Bridge to the desiredangle and tighten the screws.18. Make yourself a sandwich. Wash handsbefore returning to work.pin downBridge activity on Channel 1. Whoop withunbridled joy.5. Repeat steps 3 and 4 for each channel ofthe Console. Youll probably want to stopwhooping after about the sixth or seventhchannel.6. Assign the last channel you tested to theL/R MIX. Turn up the L/R MIX fader.Engage the L/R switch in the MONITORsection of the Console.7. Confirm meter activity on both the MeterBridge VU meters and the consoles L/RMAIN LED meters. Pan the channel left andright to confirm that all meters understandthis sort of thing.A SHORT TEST-DRIVEThe point of this exercise is to make sure thatall the Meter Bridge channels (and all the LEDson each channel) work properly. Better nowthan later.1. Power up your 8Bus Console. Confirmthat the following are alight:A. The consoles power LED;B. The meter bridges VU meters (unlessyoure installing an MBE); andC. Either the TAPE or CHANNEL LED onthe Meter Bridge.If nothing lights up,turn the power offimmediately and re-check your connec-tions. If all is aglow,proceed to the nextstep.2. If the MeterBridge TAPELED is on,press theSOURCEbutton belowit once to switch toCHANNEL. If theCHANNEL LED ison, switch it toTAPE and back toCHANNEL, toconfirm thatthe switch isbehaving.3. Send a signalinto the mainpath ofConsole Channel 1. The 20 LED abovethe fader will let you know if you have doneso.4. After makingsure that thechannel isnot muted,turn up thechannelfader. Con-firm MeterFGHTROUBLESHOOTINGIf a group of LED ladders doesnt respond,theres a good chance that the correspondingribbon cable isnt pushed in all the way. Makesure that it is firmly plugged in.If nothing responds, contact your dealer orMackie Designs Tech Support immediately.METER BRIDGE OPERATIONYour meter bridges ballistics and generalbehavior is the same as the submaster LEDladders on the Master section of the Console.For the excruciating details, read the section onMETERING on page 11 of your 8Bus manual.When TAPE is selected on the Meter Bridge,the channel meters will show you what is com-ing out of your multitrack into your tape returns before any signal manipulation in the chan-nel (but after the +4/10 switching circuit). Thechannel meters should behave just like yourmultitracks meters.When CHANNEL is selected, the meters“see” the channels direct output post-EQ,post-fader and post-mute. This is particularlyhandy for live mixing.The VU meters on the MB32, MB24 andMB16 “look” at the same signals as theconsoles L/R LED meters. You will notice thatthe VU meters and LED meters will not alwaysagree with each other. THIS IS NORMAL. TheLED meters read peak activity and will showevery dynamic nuance. The VU meters, de-signed in the Early Bronze Age, are slower torespond and therefore show an RMS or averagesignal level. This will usually be several dB lessthan the peaks shown on the LED meter.Final suggestion: Turn your overhead lightsway down so that your Mackie system will looklike the Death Star from Revenge of the Jedi.