Mackie SR56.8 Wartungshandbuch

SR40•8SR56•8SERVICE MANUALVERSION 1.1 1997, 1999 MACKIE DESIGNS, INC.820-176-00Page 3 is interactiveGo To Bulletins

10HPF30-800HzMIDHI8045-3K12KLOMID500-15KINSERT(BALANCED)SENDRETURNSOLOPFLAFL(SIP)HPF150HzMIDHI8080012KLOMID3KMIDHI8080012KLOMID3KHPF150HzSOLOPFLAFL(SI

11L (LEFT MAIN MIX)R (RIGHT MAIN MIX)C (CENTER MAIN MIX)AUX SENDS 2-4 AND 6-8 NOT SHOWNSUB 1SUB 2SUBS 3-8 NOT SHOWNAUX SEND 1AUX SEND 5SOLO AUDIO (PFL

12SPECIFICATIONSNoiseMaster Fader @ Unity, channel gains down -90dBuMaster Fader @ Unity, channel gains @ Unity -86dBuSignal to Noise Ratio (ref +4)

13CIRCUIT THEORYANALOG CIRCUITS / SIGNAL PATHThe SR40•8 signal path begins with hybrid (discrete/op-amp) mic/line preamps. After themic/line preamp,

14MIC/LINE PREAMPThe SR40•8 uses Mackie’s famous low-noise, high headroom mic/line preamp design. Thecircuit has been revised since the version you m

15SOLO CONTROL CIRCUITThe SR40·8 has two interlinked solo systems. One serves all inputs: channels 1 to 40, auxreturns A1-A4, B1-B4, and Tape inputs

16INPUT SOLO LOGICAt any input, depressing the solo switch connects 5V to the solo LED and to the solocontrol bus SOLO-CNTL-IP via a 4148 diode. The

17OTHER MATTERSDiode OR gate D4 and D5 drive comparator U2A, whose output goes low wheneverSOLO-CNTL-IP or SOLO-CNTL-OP is high. U2A’s active low out

18CLEAR COM INTERFACEThe Clear Com production intercom system is the de-facto standard within the musicindustry. The SR40·8 has an integral Clear C

19TRANSMIT SIGNAL PATHThe transmit signal path begins at the talkback microphone. The intercom interfacetakes the line level signal at U1705A and sen

CAUTION AVIS RISK OF ELECTRIC SHOCKDO NOT OPENRISQUE DE CHOC ELECTRIQUENE PAS OUVRIRCAUTION: TO REDUCE THE RISK OFELECTRIC SHOCK DO NOT REMOVETHE CO

20IGNORE SWITCH (Rev 6 PCB)If the SR40·8 shares the intercom line with the lighting company, there is a high degree ofactivity on the line, which woul

21CLEAR COM JUMPER OPTIONSName Description Procedure Default SettingIntercom pre-faderMakes talk levelindependent ofR1741.JP1704, cut tracebetween pi

22ULTRA MUTECIRCUIT DESCRIPTIONULTRA MUTE is a microprocessor based system that stores and recalls specific mute stateson the SR40•8 console. The sy

23CHANNELMUTELEDsCHANNELMUTESWITCHESCHANNELANALOGSWITCHESMASTERSECTIONMUTELEDsMASTERSECTIONMUTESWITCHESMASTERSECTIONANALOGSWITCHESMUTECONTROLSWITCHESM

24StepProcedureResult / Verify1Power off the consolen/a (the console is off)2Connect MIDI in to MIDI out, connect pins 2 and 3 on the data portn/a (yo

2540MUTE FADER10KD POT, 130-034-00KNOB, 760-024-01TRIM10K POT, 130-066-02KNOB, 760-048-01PHANTOM PWRBUTTON, 760-013-00SW ITCH, 500-018-00LED, 304-027

2612345678MUTE MUTE MUTE MUTE MUTE MUTE MUTEMUTEULTRAMUTE SECTIONALL SWITCHES, 500-021-00ALL LED'S, 304-001-00DISPLAY, 304-021-00LENS, 780-029-00

27SOLOSOLO S OLOCENTE R LEFT RIGH TDCBA TB ASSIGNSWITCHESBUTTON, 760-013-00SW ITCH, 500-018-00ALL M ATRIXCONTROLS50KG POT, 130-003-02KNOB, 760-048

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29CHASSIS ASSEMBLY, DRAWING 1 OF 6ITEM PART # DESCRIPTION1 551-025-00 ARMREST2 550-187-00 TOP PANEL 24 CH3 550-189-00 TOP PANEL MASTER4 550-188-00 TOP

CONTENTSINTRODUCTION...4TECHNICAL SUPPORT...

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31CHASSIS ASSEMBLY, DRAWING 2 OF 6ITEM PART # DESCRIPTION1 055-069-00 PCB ASSY. CHANNEL METER2 055-076-00 PCB ASSY. MASTER METER3 040-132-00 RIBBON C

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33CHASSIS ASSEMBLY, DRAWING 3 OF 6ITEM PART # DESCRIPTION1 780-029-00 DISPLAY LENS2 720-002-00 TAPE USED ON ABOVE3 055-075-00 PCB ASSY. MUTE SWITCH4 0

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35CHASSIS ASSEMBLY, DRAWING 4 OF 6ITEM PART # DESCRIPTION1 040-093-00 RIBBON CABLE ASSY. 40C 9.5"2 040-102-00 RIBBON CABLE ASSY. 10C 15"3 05

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37CHASSIS ASSEMBLY, DRAWING 5 OF 6ITEM PART # DESCRIPTION1 055-077-00 PCB ASSY. POWER DIST2 700-023-00 SCREW MACH 6-32X1/2 BLK3 705-001-00 KEPNUT 6-32

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39CHASSIS ASSEMBLY, DRAWING 6 OF 6ITEM PART # DESCRIPTION1 760-060-10 ENDCAP - RIGHT2 700-039-00 SCREW MACH 10-32X1/2 (END CAP)3 700-043-09 SCREW TF 1

4INTRODUCTIONThis manual contains complete service information for the SR40•8 and SR56•8 mixingconsoles and power supply. Operating instructions will

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41PART # DESCRIPTION040-010-00 CABLE RIBBON 22GA 7C 19IN (LED TO MAIN PCB)040-112-00 CABLE DIS 18GA 1015 7C .156 9IN040-113-00 CABLE DIS 18GA 1010 GRN

SR40•8 SERVICE MANUAL42PART # DESCRIPTIONPART # DESCRIPTION040- Cables055- Finished PCB Assys100- Pots and Resistors200- Capacitors300- Semiconductors

VERSION 1.043PART # DESCRIPTIONPART # DESCRIPTION040- Cables055- Finished PCB Assys100- Pots and Resistors200- Capacitors300- Semiconductors400- Jacks

SR40•8 SERVICE MANUAL44PART # DESCRIPTIONPART # DESCRIPTION040- Cables055- Finished PCB Assys100- Pots and Resistors200- Capacitors300- Semiconductors

VERSION 1.045PART # DESCRIPTIONPART # DESCRIPTION040- Cables055- Finished PCB Assys100- Pots and Resistors200- Capacitors300- Semiconductors400- Jacks

SR40•8 SERVICE MANUAL46PART # DESCRIPTIONPART # DESCRIPTION040- Cables055- Finished PCB Assys100- Pots and Resistors200- Capacitors300- Semiconductors

VERSION 1.047PART # DESCRIPTIONPART # DESCRIPTION040- Cables055- Finished PCB Assys100- Pots and Resistors200- Capacitors300- Semiconductors400- Jacks

48J1J3 J2J4J8J7J5J6MONO CHANNEL PCB055-067-00COMPONENT SIDESR40•8 CHANNEL PCB CONNECTOR LOCATIONSCONNECTOR PINOUT AND LOCATION

49J1CONNECTS TO POD PCB P140 PIN CABLE 040-093-00CH 1 IN + 1 2 CH 1 IN -CH 1 GROUND 3 4 CH 1 PHANTOMCH 1 GROUND 5 6 CH 1 RETURN -CH 1 RETURN + 7 8 CH

5SYSTEM OVERVIEWTHE SR40•8 IN A NUTSHELLThis section provides a quick summary of the SR40•8’s major features. It is not intendedto take the place of t

50SR40•8 STEREO CHANNEL PCB CONNECTOR LOCATIONSJ1J3J6J4J7J5STEREO CHANNEL PCB055-067-00COMPONENT SIDE

51SR40•8 STEREO CHANNEL PCB CONNECTOR LOCATIONSJ1CONNECTS TO POD PCB J1140 PIN CABLE 040-099-00A1 LEFT + 1 2 A1 LEFT -A1 LEFT GND 3 4 A1 RIGHT +A1 RIG

52SR40•8 MASTER PCB CONNECTOR LOCATIONS / PINOUTJ121182GND3-184 AUX SEND GND548J1CONNECTS TO POD PCB J241 PIN CABLE 040-097-00 SUB 1 OUT 1 2 SUB 2 OUT

53SR40•8 MASTER PCB CONNECTOR PINOUTJ5MAIN BUS50 PIN CABLE 040-092-00SUB 1 + 1 2 SUB 1 -GND 3 4 SUB 2 +SUB 2 - 5 6 GNDSUB 3 + 7 8 SUB 3 -GND 9 10 SUB

54SCHEMATICS / PCB LAYOUTSThe remainder of this manual contains schematics and PCB layouts for the SR40•8.Documents are organized in numeric order by

55SPEAKING MACKIE-EESESome of the terminology and labeling used in the SR40•8 schematics may be confus-ing (or at least illogical) to those new to se

SR40•8 +12V Fuse Upgrade BC 4/20/98THE MIXER FIXER • MACKIE DESIGNS SERVICE NEWSTHE MIXER FIXER • MACKIE DESIGNS SERVICE NEWSSR 40•8 +12V Power Sup

SR40•8 5-Volt Filter cap BC 8/13/97THE MIXER FIXER • MACKIE DESIGNS SERVICE NEWSTHE MIXER FIXER • MACKIE DESIGNS SERVICE NEWSSR 40•8 5-Volt Filter C

SR40•8 Clock Jumper BC 7/1/97THE MIXER FIXER • MACKIE DESIGNS SERVICE NEWSTHE MIXER FIXER • MACKIE DESIGNS SERVICE NEWSSR 40•8 Clock JumperModel: SR

111M20pfJ6123150K trim potPin 1 unusedSR40•8 Mono Channel PCB,(Ch1-8 backside)055-067-00THE MIXER FIXER • MACKIE DESIGNS SERVICE NEWSTHE MIXER FIXER

6STAGE MONITORS & EFFECTSEvery channel, as well as each of the four main aux returns (A1-A4), has eight aux sendcontrols. Per channel, aux sends 1

SR40•8 Digtal output pcb clock noise mod BC 8/5/97THE MIXER FIXER • MACKIE DESIGNS SERVICE NEWSTHE MIXER FIXER • MACKIE DESIGNS SERVICE NEWSSR 40•8

SR40•8 Power supply diode failure BC 4/21/97THE MIXER FIXER • MACKIE DESIGNS SERVICE NEWSTHE MIXER FIXER • MACKIE DESIGNS SERVICE NEWSSR 40•8 Power

MACKIE DESIGNS INC.,16220 Wood-Red Road NE, Woodinville, WA 98072Phone 800/258-6883, Service Fax 206/402-7833, General Fax 206/487-43377/11/97To: Mack

SR40•8 Timing Error BC 7/1/97CH 17-24PCBA1-A4PCB50 pin cableInstall055-155-00PCBRedStripeRemove andDiscard ribbon cableTHE MIXER FIXER • MACKIE DESIG

7TALKBACK & INTERCOMThe SR40•8’s extensive talkback section allows the engineer to speak into severaloutputs via a master talkback switch, with as

8ULTRA MUTE FUNCTION SUMMARYGENERAL• There are 9 Sets of 10 Groups each, for a total of 90 Groups. Up to 10 Groups can be activeat a time within a S

9 CLEAR• In Group Mode, used to turn off all active Groups. Press and hold CLEAR for two seconds,then release to turn off all mutes on the console. Th