Yamaha EMX88S EMX68S Service Manual

SERVICE MANUALHAMAMATSU, JAPAN1,387K-7041 Printed in Japan 2002.03PA 011625 CONTENTSSPECIFICATIONS ...

10EMX68S / EMX88S CIRCUIT BOARD LAYOUT & WIRINGMIX88MIX68PWR 3/4PWR 3/4PWR 4/4PWR 4/4DSPPower TransformerPWR 2/4PWR 1/4PWR 2/4MIX88MIX68PWR 1/4DSP

38REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SR904R905R906R907R908R909R910R911R912-915R916R917R918R919R920

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts39EMX68S / EMX88SRA29RA30RA31RA32RA33RA34RA35RA36RA37RA38RA39RA40RA41RA42RA43

40REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SRB15RB16RB17RB18RB19RB20RB21RB22RB23RB24RB25RB26RB27RB28RB29

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts41EMX68S / EMX88SVR402VR403VR404VR405VR406VR407VR501VR502VR503VR504VR505VR506

42REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88S-104C105C106C107C108C109C110C111C112C113C114C115C116C117C118

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts43EMX68S / EMX88SCN105CN106CN107D101-108D109D110D111D112D113D114-117D118D119D

44REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SL106PR101PR102Q101Q102Q103Q104Q105Q106Q107-109Q110Q111Q112Q1

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts45EMX68S / EMX88SR107R108R109R110R111R112R113R114R115R116R117R118R119R120R121

46REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SR185R186R187R188R189R190R191R192R193R194R195R196R197R198R199

47EMX68S / EMX88S RK-88 RACK MOUNT KIT1020REF NO. PART NO. DESCRIPTION REMARKS QTYRANKVB132700--RACK MOUNT KITBind Head ScrewRack Angle4.0X12 MFZN2B

11EMX68S / EMX88S DIMENSIONS305mm481.5mm448.5mm327.6mm62mm● Front View ● Side View● Front View with Rack Mount Adaptor

12EMX68S / EMX88SMIX88MIX68DSPINPUT TO MAINFOOT SWCH INPUTEMX-68S [CH5,6]EMX-88S [CH7,8]CH INPUTEMX-68S [CH3,4]EMX-88S [CH5,6]CH INPUTEMX-68S [CH1,2]E

13EMX68S / EMX88S++++PWR 1/4PWR 2/4SPEAKERSEFFECT OUTMAIN LMAIN RMONITORREC OUTBRIDGE12A12B1234123412341234EMX-68S/88S:IC923EMX-68S/88S:C923EMX-68S/88

14EMX68S / EMX88S DISASSEMBLY PROCEDURE1. Front Panel Assembly(Time required: about 3 min)1-1. Remove the seven (7) screws marked [80] and thescrew ma

15EMX68S / EMX88S3. MIX68 Circuit Board (EMX68S)(Time required: about 18 min)MIX88 Circuit Board (EMX88S)(Time required: about 20 min)3-1. Remove the

16EMX68S / EMX88S4. PWR Circuit Board 4/4(Time required: about 4 min)4-1. Remove the front panel assembly. (See Procedure 1)4-2. Pinch slightly the st

17EMX68S / EMX88S5. Rear Panel Assembly(Time required: about 5 min)5-1. Remove the front panel assembly. (See Procedure 1)5-2. Remove the eight (8) sc

18EMX68S / EMX88S8. PWR Circuit Board 1/4(Time required: about 13 min)8-1. Remove the rear panel assembly. (See Procedure 5)8-2. Remove the PWR circui

19EMX68S / EMX88SBody AssembBody AssemblyHandleHandle[50] [50]Body AssemblyHandle[50] [50][40][40][40][40]Body Assembly(Fig. 15)[50]: Bind Head Screw

2EMX68S / EMX88SIMPORTANT NOTICEThis manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assu

20EMX68S / EMX88S LSI PIN DESCRIPTION● M30622MCA-XXXFP (X2416A00) CPU DSP: IC109PIN PINNO.NAME I/O FUNCTIONNO.NAME I/O FUNCTION1 P96/ I/O 41 P55/HOLD

21EMX68S / EMX88S● YSS910-S (XV988A00) DSP6 (Digital Signal Processor) DPS: IC112PIN PINNO.NAME I/O FUNCTIONNO.NAME I/O FUNCTION1 Vdd Power supply (3.

22EMX68S / EMX88S IC BLOCK DIAGRAM● AK4522VF-E2 (XW008A00) CODEC (CMOS A/D & D/A Converter) DSP: IC108PIN PINNO.NAME I/O FUNCTIONNO.NAME I/O FUNCT

23EMX68S / EMX88S CIRCUIT BOARDS CONTENTSMIX68 CIRCUIT BOARD (COMPONENT SIDE) ...

24EMX68S / EMX88SHIGHMIDLOWMONITOREFFECTPANLEVELPADHIGHMIDLOWMONITOREFFECTPANLEVELPADHIGHMIDLOWMONITOREFFECTPANLEVELPADHIGHMIDLOWMONITOREFFECTPANLEVEL

25EMX68S / EMX88SAA’NORELEFFECT OUTEFFECTON/OFFTAPAUX IN LAUX IN R2TR IN L2TR IN RREC OUT LREC OUT RMAIN LMAIN RMONITORPOWERSTAND BY+6+30-5-10YAMAHASP

26EMX68S / EMX88SAA’● MIX68 Circuit Board

27EMX68S / EMX88SAA'Pattern side

28EMX68S / EMX88SHIGHMIDLOWMONITOREFFECTPANLEVELPADHIGHMIDLOWMONITOREFFECTPANLEVELPADHIGHMIDLOWMONITOREFFECTPANLEVELPADHIGHMIDLOWMONITOREFFECTPANLEVEL

29EMX68S / EMX88SBAL/PANHIGHMIDLOWMONITOREFFECTLEVELMICLINE LLINE REFFECT OUTEFFECTON/OFFTAPAUX IN LAUX IN R2TR IN L2TR IN RREC OUT LREC OUT RMAIN LMA

3EMX68S / EMX88S SPECIFICATIONS● General specificationsMaximum output powerMAIN L, R: 400 W+400 W/4Ω @0.5% THD at 1 kHz, 270 W+270 W/8Ω @0.5% THD at 1

30EMX68S / EMX88SAA’● MIX88 Circuit Board

31EMX68S / EMX88SAA'Pattern side

32EMX68S / EMX88SComponent side● DSP Circuit Boardnon connectto MIX88-CN901to MIX68-CN901

33EMX68S / EMX88SPattern side● DSP Circuit Board3NA-V826720

34EMX68S / EMX88Sto PWR2/4-W101BE2 to PWRto PWR2/4-W101RE2to PWR1/4-W103OR1to MIX-CN903AA’● PWR 1/4 Circuit Board

35EMX68S / EMX88Sto PWR1/4-W103OR2 to FAN Assemblyto Power Transformerto PWR2/4-W101BL2to PWR2/4-W101WH2AA’Component side3NA-V826900 1

36EMX68S / EMX88S(L+R)BRIDGESPEAKERS1212to PWR 1/4-W101RE1 to PWR 1/4-W101BE1to PWR 1/4-W101BL1 to PWR 1/4-W101WH1A BAC INto Power Transformerto PWR 4

37EMX68S / EMX88S INSPECTIONS0. PREPARATION(1) Mesuring instruments• Oscillator (Ballance output type, Output impedance 150Ω)• Oscilloscope (Input imp

38EMX68S / EMX88SMONITORGRAPHIC EQUALIZER (7 band) fader: CENTEREFFECT RTN level control: MAX2TR IN: MAXMASTER level control: MAXPHANTOM switch: OFFPO

39EMX68S / EMX88S2.4 EQ Response Characteristic CheckOn condition of 2.1, set the LOW, MID, HIGH controls according to the table 2.4-1, and mesure the

4EMX68S / EMX88S• All output jacks are unbalanced.• 0 dB=0.775 Vrms, 0 dBV=1 Vrms.Input connectors PADActual load impedanceNominal impedanceInput leve

40EMX68S / EMX88S2.9 EIN CheckNote: This mesurement should be performed by using DIN AUDIO FILTER.On condition of 2.1, set the LEVEL knob for mesuring

41EMX68S / EMX88S3. Power Amplifier Check3.1 For the case that the POWER AMP switch is 'MAIN(L+R)-MON' or 'MAIN L-MAIN R'3.1.1 Pre

42EMX68S / EMX88S3.1.8 Stability Check(1) Connect 10pF~0.47µF capacitor in parallel to the 4Ω load resistance and apply rectangule signal of 10kHz/-26

43EMX68S / EMX88S

44EMX68S / EMX88S

45EMX68S / EMX88S

46EMX68S / EMX88S

47EMX68S / EMX88S

48EMX68S / EMX88S

49EMX68S / EMX88S

5EMX68S / EMX88S

50EMX68S / EMX88S CONTENTSMIX68 Circuit Board 1/5 ...

1234567891011ABCDEFGH<P.1>EMX68S / EMX88SEMX68S / EMX88SEMX68S / EMX88SMIX6838CC1-8822114-2 1(From P.5 E-7)(From P.5 D-7)(to P.3 E-3)(to P.3 E-

1234567891011ABCDEFGH<P.2>EMX68S / EMX88SEMX68S / EMX88SEMX68S / EMX88S(From P.5 E-7)(From P.5 E-7)(to P.3 E-3)(to P.3 E-3)(to P.3 E-3)(to P

1234567891011ABCDEFGH<P.3>EMX68S / EMX88SEMX68S / EMX88SEMX68S / EMX88S(From P.5 C-7)(From P.1 G-5)(From P.2 D-9)(From P.2 D-9)(From P.1 G-4)(Fr

1234567891011ABCDEFGH<P.4>EMX68S / EMX88SEMX68S / EMX88SEMX68S / EMX88S(From P.5 C-7)(to P.5 E-2)(to P.5 D-2)(From P.5 C-6)(From P.3 E-11)(From

1234567891011ABCDEFGH<P.5>EMX68S / EMX88SEMX68S / EMX88SEMX68S / EMX88S38CC1-8822114-6 1(From P.1 G-2)(From P.2 F-10)(From P.3 G-11)(From P.4 G

1234567891011ABCDEFGH<P.6>EMX68S / EMX88SEMX68S / EMX88SEMX68S / EMX88SMIX8838CC1-8822113-2 1(From P.10 E-7)(From P.10 E-7)(From P.10 D-7)(to P

1234567891011ABCDEFGH<P.7>EMX68S / EMX88SEMX68S / EMX88SEMX68S / EMX88S38CC1-8822113-3 1(From P.10 E-7)(From P.10 E-7)(to P.6 B-6)OP AMPOP AMPO

1234567891011ABCDEFGH<P.8>EMX68S / EMX88SEMX68S / EMX88SEMX68S / EMX88S38CC1-8822113-4 1(From P.10 C-7)(From P.10 C-6)(From P.6 G-5)(From P.7 D

1234567891011ABCDEFGH<P.9>EMX68S / EMX88SEMX68S / EMX88SEMX68S / EMX88S38CC1-8822113-5 1(From P.10 C-7)(From P.10 C-6)(From P.10 C-7)(From P.10

6EMX68S / EMX88S

1234567891011ABCDEFGH<P.10>EMX68S / EMX88SEMX68S / EMX88SEMX68S / EMX88S38CC1-8822113-6 1(to P.6 G-3)(to P.7 F-9)(to P.8 G-11)(to P.9 G-5)(to P

1234567891011ABCDEFGH<P.11>EMX68S / EMX88SEMX68S / EMX88SEMX68S / EMX88SREGULATOR +3.3VSYSTEM RESETDIRINVERTEROP AMPOP AMPOP AMPA/D&D/ADSPDR

1234567891011ABCDEFGH<P.12>EMX68S / EMX88SEMX68S / EMX88SEMX68S / EMX88SCommonPowerTransformerU, H onlyInstallNot InstallPWR 1/4PWR 4/4PWR 2/4PW

1EMX68S / EMX88SPARTS LIST WARNINGComponents having special characteristics are marked and must be replaced with parts havingspecifications equal to

2 OVERALL ASSEMBLY8010414243604050100B40B120B110B10B40B40B30B50B60B20B80B90B70B130907011044 44

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts3EMX68S / EMX88S***********----------------------------------V7871800X0339B00

4EMX68S / EMX88S FRONT PANEL ASSEMBLY170160140190180130302201101202102004140102023024025027050706080907060809060 70 909050 60 70 9090100EMX-88SEMX-68

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts5EMX68S / EMX88S**********101020203040414150506060707080809090100110120130140

613017026016014024025030b30c30d4030a50208060901070110100120 REAR PANEL ASSEMBLY150180260240

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts7EMX68S / EMX88S10101010101010102030a30a30b30c30c30c30d4050607080901001101201

7EMX68S / EMX88S PANEL LAYOUT햲햳햴햵햶햷햸햹햺햻● CONTROL PANEL1. CONTROL SECTION • Channel Control햲 Equalizer (HIGH, MID, LOW)햳 MONITOR control햴 EFFECT con

8REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SC101C102C103C104-108C109C110C111C113C114C116C117C119C120C121-

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts9EMX68S / EMX88S100.00 16.0V0.1000 25V Z0.1000 25V Z0.1000 25V Z0.1000 2

10REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88S-169R170R171R172R173R174R175R176R178R179-181R182R183R186R187

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts11EMX68S / EMX88SC208C209C210-212C213C214C215C216C217C218C219C220C221C222C223

12REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SC625C626C627C628C629C630C631C701C702C703C704C705-707C708C709

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts13EMX68S / EMX88SC822C823C824C825C826C827C828C829C830C831C832C833C834C835C836

14REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SC962C963C964C965C966C967C968C969C970C971C972C973C974C975C976

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts15EMX68S / EMX88SCA41CA42CA43CA44CA45CA46CA47CA48CA49CA50CA51-A58CB01CB02CB03

16REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SIC920-923JK101JK102JK201JK202JK501JK502JK601JK602JK701JK702J

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts17EMX68S / EMX88SQ912Q913Q914Q915Q916Q917Q918Q919Q920Q921Q922R101R102R103R104

8EMX68S / EMX88S햽헂헁햾햿헀헃헄헅헆2122232425햽 Graphic Equalizer햾 EFFECT RTN control햿 AUX IN control헀 2TR IN control헁 MASTER control헂 Peak Level Indicator •

18REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SR217R218R219R220R221R222R223R224R225R226R227R228R229R230R231

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts19EMX68S / EMX88SR546R547R601R602R603R604R605R606R607R608R609R610R611R612R613

20REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SR724R725R726R727-729R730R731R732R733R734R735-737R738R739R740

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts21EMX68S / EMX88SR835-837R838R839R840R841R842R843R844R845R846R847R848R849R850

22REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SR952R953-955R956-976R977-999RA01RA02-A04RA05-A07RA08RA09RA10

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts23EMX68S / EMX88SRA69RA70RA71RA72RA73RA74RA75RA76RA77RA78RA79RA80RA81RA82RA83

24REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SSW902SW903SW904SW905SW906VR101VR102VR103VR104VR105VR106VR107

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts25EMX68S / EMX88SC101C102C103C104C105-107C108C109C110-112C113C114C115C116C117

26REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SC317C318C319C320C321C322C323C324C325C326-331C401C402C403C404

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts27EMX68S / EMX88SC605C606C607C608C609C610C611C612C613-616C617C618C619C620C621

9EMX68S / EMX88S2627햳햴 햶햵햷햸 햹햲햳햲26ON/OFF switch27POWER ON/OFF switch,indicator • STAND-BY • POWER switch, indicator2. INPUT/OUTPUT SECTION● REA

28REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SC803C804C805-807C808C809C810-812C813C814C815C816C817C818C819

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts29EMX68S / EMX88SC945C946C947C948C949C950C951C952C953C954C955C956C957C958C959

30REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SCA20CA21CA22CA23CA24CA25CA26CA27CA28-A33CA34CA35CA36CA37CA38

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts31EMX68S / EMX88SIC503IC504IC505IC701IC702IC703IC704IC801IC802IC803IC901-904I

32REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SLD921LD922LD923Q101Q102Q201Q202Q301Q302Q401Q402Q501Q502Q601Q

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts33EMX68S / EMX88SR132R133R134R135R136R137R138R139R140R141R142R143R201R202R203

34REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SR318R319R320R321R322R323R324R325R326R327R328R329R330R331R332

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts35EMX68S / EMX88SR506R507R508R509R510R511R512R513R514R515R516R517R518R519R520

36REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New PartsEMX68S / EMX88SR627R628R629R630R631R632R633R634R635R636R637R638R639R640R641

REF NO. PART NO. DESCRIPTION REMARKS QTYRANKRANK: Japan only*: New Parts37EMX68S / EMX88SR754R755R756R757R758R759R760R761-764R801R802R803R804R805R806