Marantz 74 CD38 User Manual

74 CD38/o18/028/05B
Compact disc player
WISE
DIGITAL AUDIO
TABLE OF CONTENTS
SECTION PAGE
1. TECHNICAL SPECIFICATIONS ..0... cee eecesesssseceensseccscsesssesacessaeseseeueereueraresecosecssessssanenesensanesseseaaesnasneneneats 3
| WARININGS si issieiiscesccc ccs scchctec cca ceusewenoas ietycedins ctaSasc ds opabies piesane ce evatee Gaaactasteai dacaset ons cancastd ob iaanssisaeiade dageba nh aehia 9
3. SERVICING HINTS - TOOLS... cee cecesecseseseteseesesessscssseescsasseuseneeseessessssssesseatesesoesseesseessensessesegeeentenrsaees 10
4, DISMANTLING INSTRUCTIONS ...0..... ccc eccesccecssesesssssseeseseseneesseeeseensneeecsssneeseesecsussnesseensensessecngnseneeaesnens a
5. SERVICE TEST PROGRAM ...........ccccsssssssesssssssssesssesssessscsaesensesaeensenessessessesesseasenesseeaeeseeseaseseraeseeenseneenenees 12
6. CDM 12.1 START UP DIAGRAM... cecscecescssscesesessetsnesseseseneesseeeseeneeceesseeseesasaneenseacessessaeseseneesseeenrensenens 13
7. FAULTFINDING GUIDE CDM 12.1 0... ee eee ecseseceseseneesereseeeeseseesnaseseseeseseaeeseseeeesnseeseaseaesnneseaeeneseaan 14
8. FAULTFINDING GUIDE Las. cccciccccces cise concesseseresasnccscustscaessseaseanevscnestescenetusensaesadcaseetssaea secauesuscseavabesderanecatans 20
9. SPECIFICATIONS MEASUREMENT ............cccsscsecssssssessssenseeseessessesssesseenesesseaeeeesneseneeseenseeessaneesaesensagens 21
10: BLOCK DIAGRAM os iesisccvcccsevienecceseesstsieectescdectesctissssccvaassasadcossvevstensuasascansassbncoraadesapsosiesgiaaesesedneoseddascaacutars 23
11. WIRING DIAGRAM .........ecccsscsssesseessssesetsassssesssassussuessesseessccsseeaeeseseaeeaseaeseneserenseaesanensensenseesesseseatennseateneey 24
12. CIRCUIT DIAGRAM and PRINTED BOARDS
12.1. POWER SUPPLY and TRANSFORMER CONNECTIONS ........cscccessersseesssecsensesetecsenessseasessesnneeeees 25
12.2. SERVO CIRCUIT DIAGRAM .........:cccccsccssssesseereesecsesseeesseneeeneeeaeensersessecstsseseneeseaseasacesseesenseseenesnananeaees 26
12.3. DECODER CIRCUIT DIAGRAM .........ccccesesssesessesnseeeesesseenesseesessersenecseesersssessresscsesaessuaesneseaseneneegs 27
12.4. DAC CIRCUIT DIAGRAM ..............cecccsceseseseecssesseessscasseasesseesseusersesessesssesrecoessesnesesessesenesessaeersgneneteneas 28
12.5. MONO BOARD LAYOUT ....... cece cecesessesscssserscssseesecsesseesecsecsassesaeeasseesessesasenenseasenecaesasensarenseseeaaesasansgs 29
12.6. MAIN PANEL SOLDER SIDE... se eeceseseeseessesssesessessnasseassssseassesseusecceeesescsessseseesesensesseaeeessesaneeneas 30
12.7. DISPLAY & KEYBOARD ........ eee eeeeeeeeeteeseeeseenecseeseesseessesseasseeceasecasesseseassesaeassesseenesentsressgeneeasaenaeees 31
13. EXPLODED VIEW LOADER & PARTS LIST oo... ceecccccsescesssesecesesensnecsesessssneseeceecaeaeeseseeaneansaguesensnneses 32
14. EXPLODED VIEW CABINET & MECHANICAL PARTS LIST... ce cecesesseeseesetescaeeeseesesassaeseeeseneneeotes 33
15. ELECTRICAL PARTS LIST oo... cece cessessnssssecssesauscssssssansseessesssseseessecoucessssenssnenesenanssasagessnsaesesanennennenees 34
Please use this service manual with referring to the user guide (D.F.U) without fail.
HER eR BP eR BRE @ °
PCS
89
146
model
CD-38
!
;
4827 725 51151
First Issue 1997.9
225855010 ACT

Marantz 74 CD38 Specifications

General

Disc format	CD
Frequency response	20Hz to 20kHz
Dynamic range	96dB
Channel separation	100dB
Total harmonic distortion	0.0025%
Dimensions	458 x 325 x 110 mm
Weight	4.9kg
Line output	2V
Digital outputs	Optical, Coaxial