Marantz 4070 - Page 2

TABLE OF CONTENTS
SECTION PAGE
LEFOCUCTION vesedeciceceteesdcccdesedeaedetiwceccestestvnuces cnsdecesserdecodesiavadedsusecteussdecechsativeceendenssasaanbie sonueis 1
Service: NOtes.. «iccviiscosdesdcsvensccevesivesicncscceessvieacccneccscescustevcascceucascyssncouecunsubusleeeluccddoccalavivcedesceenss 1
Selector SWitch: <césscssccsieccesvccccwessevevsccccnsctscesnrs cove cutcastuscdsaweuckasoussncecccccusenevecuvessscocdsuslacaraiecends 1
Mode: Switch: <ccccctssscadeccsssesesiceccecn ioe eitvesanavecnceceteevee ateeddewc denn ceacdedecuachdabectndenschonsedvehe'scdeeus 1
BTL (Balanced Transformerless) Commection —— ..ss.ssssssecsseecesesceneseeneeeesseneesseeeensneseeeeeseneas 2
Pre-Amplifier cciccciesssececcsccessvaisercisousssewsersacesduatecwcvcvevosusSonnecsboutucceuscseetasiecedtevedoaudeetdesteutsense 2
Balance: Coinntrol. cece icisccccicencad cased sce poe hcl Pees bain daa Seen Ev nce wae cde uadate be eadesdededueeseeTaesees 2
IVIGEEVPATRYDINGIOE: arcviaceesinccivscccssiesctuateaaateee eat Seep vee eae em eee tne iaees 2
Power: SUPP] Y UNI: sssccivesccec ccsiececacecccsccetaceoesesrcoestescnedaicensiessacdaccsncccasccstecccuccveseccecacessesssecsoeses 3
TrOubl@: Anal Sis ccctiisescscsecstcesccccsasusasecadd ctnacwaeavcvcecs scucsusccevavcecsateccaawecsbccnesactesececeisaccanvececnbaass 3
Power Amplifier Adjustment ...........:.ccsscssssssseceeecesecanconsesaeeeesecaneaseusacaeacnsaeonosnensensenensseaenseoes 4
Power:Supply AdjUStMe@Ht «—_Seiseessessenecdticessseccucuacanesazdensnveecwadevasasevinsauciseitenadoeasnavadensetersee® » 4
Test Equipment Required for Servicing ........ssscccccsssssccsessecscessssscessesseeerssseeensesssncanaeeeseneoeuses 4
Performance Verification —.......ccccecccecccseeccescecereesceeeceeseccecensecenensaessanansesacseceensesseesecsenacenaneneds 5
PArts: LSE: — siccccccccusodscsassssucctacseeisdendvesds suas cvgvecdancdpvevar cases sbbinsdsisvacvoavessacdedesdadeenovssizuiselenedaascs 17
Specifications: cosisseseccvsise ecisisawtactedoctactecandeeceadsseuecascsacneoeduteuuasthuccauehedvedaeedecceelovecdepeecaeendeeceesas 25
LIST OF ILLUSTRATIONS
FIGURE PAGE
1. AC Power Control Box Simplified Schematic. ...........cccccesssssssserreceensncesscennenseceneseeneseeenes 3
2. Amplifier Output Load Box Simplified Schematic. ..........ccccsssccssscneerersssserssssnsereseeesene 5
3. Front Panel Adjustment and Component Locations — ........:.csssesssccsseseseeeecssnessnsenencenesens 7
4. Main Chassis Component Locations (Top View) ........:s::::ccsssecesessseseseeceecenensensnenneeeeeare 7
5. Rear Panel Component Locations « ..............:..:s:csseeseeseesnesesecesnssessnsseessscessessnsnneeneneoesnens 8
6. Main Chassis Component Locations (Bottom View) — .........cesessesssseseceesssesnsscersnensneeeoeees 8
7. Phono Amplifier Assembly P400 Component Locations ..............ccccseeeeeeeessusseeneneneneeets 9
8. Tone Amplifier Assembly PEO1 Compoenent Locations ...........cscssessssessersensseensceenentense 9
9. Power Amplifier Assembly P700 Compoenent Locations — ..........ccscsececerssssseeeereenesenenees 10
10. Main-Remote, Hi-Filter and Tape Moni. Switch Unit Assembly
PSO1 Component Locations — ................s:scssessseenseeentensenseensesseneassnesnteennneeeeaeenaneezes 11
11. Power Supply, Vari-Matrix, Buffer Amplifier Unit Assembly
P800 Component Locations — ...........::scceccessssssseereeeseenenseeseceesessscanannseeesseaaaseneaeoenns 11
12. Tone and Balance Control Unit Assembly PF01 Compoenent Locations .............00+sseee 12
13. Schematic Diagram .........csscscssssrccccsesscceccessrsccssssnenecerseccessesssesvecsessccerseuseesenesnenuenseeeeees 13
14. Exploded Mechanical Diagrarm _ ..............:sccsssccscccesessscuseverccncuessenscscuansupesecusananenesesaesoese 15
TABLE PAGE
1. Test Equipment Required for Servicing ..........cusssssssescssccssccsssssscsercccscenseceavcennacsensescene 4
FO RO a A EON EE Se Oe AN Le TK ae Ree Lee Tae a ee