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Marantz 74 CD7, Service Manual, Page: 4 / 34

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Marantz 74 CD7 Service Manual Download Page 4

2

2. SERVICING HINTS

3. SERVICE TOOLS

Audio signals disc

4822 397 30184

Disc without errors (

Disc with DO errors, black spots and fingerprints (SBC444A)

4822 397 30245

Disc (65 min 1kHz) without no pause

4822 397 30155

Max. diameter disc (58.0 mm)

4822 397 60141

Torx screwdrivers

Set (straight)

4822 395 50145

Set (square)

4822 395 50132

13th order filter

4822 395 30204

 Allen wrench (No. 3)

Summary of Contents for 74 CD7

Page 1: ...74 CD7 02G CD 7 FN KGL TABLE OF CONTENTS SECTION PAGE 1 TECHNICAL SPECIFICATIONS 1 2 SERVICING HINTS 2 3 SERVICINE TOOLS 2 4 SERVICE MODE 3 5 MICROPROCESSOR AND IC DATA 4 6 WIRING DIAGRAM 7 7 BLOCK DIAGRAM 9 8 FLAG NO 10 9 SCHEMATIC DIAGRAM AND PARTS LOCATIONS 11 10 EXPLODED VIEW AND MECHANISM PARTS LIST 27 11 TRAY MECHANISM ADJUSTMENTS 33 12 BALANCED JACKS 37 13 DIGITAL FILTER 38 14 EXPLANATION O...

Page 2: ... PHONE 82 2 323 2155 FAX 82 2 323 2154 MARANTZ BRAZIL CAIXA POSTAL 21462 CEP 04698 970 SAO PAULO SP BRAZIL PHONE 0800 123123 FAX 55 11 534 8988 PAl YUING CO LTD 6 TH FL NO 148 SUNG KIANG ROAD TAIPEI 10429 TAIWAN R O C PHONE 886 2 5221304 FAX 886 2 5630415 MRZ STANDARD CO LTD 746 754 MAHACHAI RD WANGBURAPAPIROM PHRANAKORN BANGKOK 10200 THAILAND PHONE 66 2 222 9181 FAX 66 2 224 6795 WO KEE HONG ELEC...

Page 3: ...ling frequency D A mode 32 44 1 48 kHz Quantization 16 bit linear channel Error correction Cross interleave read solomon code CIRC D A conversion 1 bit linear channel Wow flutter Precision of quartz Optical Readout System Laser AIGaAs semiconductor Wavelength 780 nm Frequency Characteristics Frequency range 2 Hz 20 kHz Dynamic range 98 dB S N ratio 102 dB Channel separation 1 kHz 100 dB THD 1 kHz ...

Page 4: ...SBC444 Disc with DO errors black spots and fingerprints SBC444A 4822 397 30245 Disc 65 min 1kHz without no pause 4822 397 30155 Max diameter disc 58 0 mm 4822 397 60141 Torx screwdrivers Set straight 4822 395 50145 Set square 4822 395 50132 13th order filter 4822 395 30204 Allen wrench No 3 ...

Page 5: ...neutral position Press NEXT button the function will change to Mode 1 3 Mode 1 display P 01 Condition FOCUS ON SPINDLE OFF RADIAL OFF MUTE ON Press NEXT button the function will change to Mode 2 Press PREV button the function will change to Mode 0 4 Mode 2 display P 02 Condition FOCUS ON SPINDLE ON RADIAL OFF MUTE ON Press NEXT button the function will change to Mode 3 Press PREV button the functi...

Page 6: ...atile output pin 5 41 V4 versatile output pin 4 42 V3 versatile output pin 3 open drain 43 KILL kill output programmable open drain 44 EF C2 error flag output only defined in CD ROM modes and 1fs modes 3 state 45 DATA serial data output 3 state 46 WCLK word clock output 3 state 47 VDDD2 P digital supply voltage 2 for periphery 48 SCLK serial bit clock output 3 state 49 VSSD3 digital ground 3 50 CL...

Page 7: ...obe signal for servo part of Q102 SAA7372GP 20 RAB7 P03 Out Low Q102 Strobe signal for digital part of Q102 SAA7372GP 21 LOCK INTP5 In Low Q304 Unlock signal of Q304 TDA1315H 22 MSCP INTP6 In Low GND GND 23 5V Avdd 5V Power supply 5V 24 5V Avref0 In 5V Power supply 5V 25 KEY0 ANI0 In Level Tact Switch Key Sensor 26 KEY1 ANI1 In Level Tact Switch Key Sensor 27 KEY2 ANI2 In Level Tact Switch Key Sen...

Page 8: ...7 8 6 WIRING DIAGRAM ...

Page 9: ...6 OSC CPU QF01 self clock 37 38 39 40 41 LOCK TDA1315H Q304 unlock delayed output signal 42 EMPA TDA1315H Q304 Deemphasis output signal 43 DACD CD7 SAA7372 data out signal 44 45 46 47 48 DMUT from CPU QF01 to TDA1315H Q304 muting signal 49 50 FS32 TDA1315H Q304 32k Sampling detected signal 51 FS44 TDA1315H Q304 44 1k Sampling detected signal 52 FS48 TDA1315H Q304 48k Sampling detected signal 53 SD...

Page 10: ...9 SCHEMATIC DIAGRAM AND PARTS LOCATION 11 12 ...

Page 11: ...13 14 ...

Page 12: ...15 16 ...

Page 13: ...17 18 ...

Page 14: ...19 20 ...

Page 15: ... Q316 Q306 Q503 Q502 Q501 Q329 Q504 Q505 Q510 Q507 Q506 Q512 Q509 Q508 Q326 Q330 Q317 Q318 Q331 Q319 Q513 Q322 Q324 Q325 Q323 Q321 QT01 Q856 Q855 Q857 Q853 Q851 Q852 Q812 Q813 Q811 Q802 Q801 Q802 QN13 Q520 QY41 QY61 QN01 QN04 QN02 QN03 QY11 QN05 QY51 QY12 21 22 PP16 ...

Page 16: ...D74 QD60 QD59 QD58 QD56 QD57 QD55 QD54 Q457 Q456 Q455 Q453Q454 Q452 Q451 QD53 QD01 QD51 QD52 Q727 Q726 Q707 Q706 Q608 Q607 Q606 Q604 Q605 Q603 Q601 Q725 Q723 Q724 Q722 Q721 Q705 Q703 Q704 Q702 Q701 Q427 Q426 Q425 Q423 Q424 Q427 Q421 QD20 QD19 QD18 QD16 QD17 QD15 QD14 QD10 QD09 QD08 QD06 QD07 QD05 QD04 Q407 Q406 Q405 Q403Q404 Q402 Q401 QD03 QD21 QD22 23 24 PA16 ...

Page 17: ...QM01 QM12 QF02 Q112 Q106 Q111 Q102 QF06 QF01 QF05 QF04 QF03 QF07 QF08 Q103 Q104 QY01 QY02 QY04 QY03 QY07 QY10 25 26 PV16 PY16 PH16 PY26 ...

Page 18: ...0 2 D 0 1 1 D PH1 6 K VERSI O N 9 0 1 G 9 0 9 Gx 3 9 0 1 G 9 3 0 G 0 3 1 Gx 2 0 3 2 Gx 4 0 3 4 Gx 2 1 1 1 G x 2 02 VERSI ON 1 1 0 G x 2 9 0 8 G 9 2 0 G 0 2 2 L PA1 6 9 9 1 G F VERSIO N 0 0 1 D 0 0 7 D 0 1 6 D 1 0 0 G 1 0 1 G A0 0 1 L OADER ASSY 1 4 5 B 0 9 7 Bx 2 Z0 0 3 0 9 0 G 0 9 5 Gx 4 9 9 6 G 02 K ONLY 0 3 3 G PP1 6 0 3 6 Gx 3 0 8 7 G 0 3 9 G x 6 1 4 6 B 1 4 0 B 1 3 9 Bx 2 9 9 7 G 9 9 5 G 0 9 ...

Page 19: ... GLASS 355K063030 001D LID TOP COVER 355K257110 002D ESCUTCHEON LOUVER TOP COVER GLD 231J063110 020D SIDE PANEL LEFT GLD 355K249110 021D SIDE PANEL RIGHT GLD 355K249120 024D 4822 454 30488 ESCUTCHEON SIDE PANEL 270K063050 028G 4822 402 11299 LINK POWER SW LINK 355K121010 095G 4822 462 42132 LEG U D60 163J057220 100G SCREW 001G A001 PIVOT 355K010010 A001 4822 691 10787 LOADER ASSY VAM1252 355K30452...

Page 20: ...MPER MAGNET CASE 355K005010 095M 4822 526 10726 MAGNET 355K305010 096M 4822 528 90783 COVER YOKE FOR MAGNET 221K053010 100M 4822 462 71811 BUFFER CLAMPER 167K056110 101M 4822 462 71809 BUFFER CLAMPER TOP 158K056140 102M 4822 466 61927 BUFFER CLAMPER TOP 225K056030 106M 4822 256 91867 HOLDER TRAY FRONT SUPPORT 221K271020 108M 4822 532 30509 BUSHING FRONT GUIDE 225K259010 120M SHAFT TRAY GUIDE 221K1...

Page 21: ... 0 1 3 M 0 2 8 M 5 0 6 Mx 4 1 6 7 M 0 2 4 M 1 2 4 M 1 2 3 M 1 2 5 M 1 4 0 M 1 6 0 M 1 2 1 M 1 6 1 M 0 9 0 M 0 7 9 M 0 8 9 M 0 9 2 M 0 9 3 M 1 0 1 M 1 0 0 M 1 0 2 M 0 9 6 M 0 9 5 M 0 9 4 M 0 7 8 M 0 8 6 M 0 8 1 M 0 8 5 M 0 7 7 M 0 7 6 M 0 8 7 M 0 8 0 M 0 8 8 M 0 8 4 M 0 4 5 M 0 7 4 M 0 6 8 M 0 7 5 M 0 7 3 M 1 4 2 M 1 4 1 M 1 3 8 M 0 6 0 M M0 0 2 0 2 2 M 1 6 2 M 1 6 3 M S0 0 4 S0 0 3 0 1 0 M 0 5 2 M...

Page 22: ... bring down the opposite lever and put the tray on the protrusion of the lever Protrusion Note If both the levers are brought down at the same time the tray cannot be raised The levers should be brought down one by one If the tray is forced to move to the original position the two pins injected into the tray case may be bent 3 When replacing the sub chassis VAM1252 a The height of the sub chassis ...

Page 23: ...ブルの高さに合わせて下図のように マグネッ ト ク ランパーがクランパー金具に接触しないよ うに ク ランパー金 具高さ調整ネジを調整して下さい 規格 1 5 0 3 0 ｍｍ Clamper metal strap DISC 1 5 mm 0 3 0 Clamper metal Strap height adjustment screw b サブシャーシ交換後 マグネッ ト クランパーがクランパー金 具に左右接触しないよ うに クランパーアーム調整ネジ を再 調整して下さい その際 クランパー金具と他の金具とが 接しない様にする事 Clamper arm adjustment screw Clamper arm Clamper 2 2 2 2 2 ト ト ト ト ト レ レ レ レ レー ー ー ー ーが が が が が下 下 下 下 下側 側 側 側 側に に に に に外 外 外 外...

Page 24: ...れで信号は正しい位相で再生されます 13 DIGITAL FILTER FILTER 1 For playing music with smooth depth such as analog records FILTER 2 A sound between FILTER 1 and FILTER 3 FILTER 3 A well balanced standard sound for all sources Changing the Filter Type FILTER 1 is selected automatically when the power is turned on Press the FILTER button to switch to FILTER 2 again to switch to FILTER 3 and a third time to switch back...

Page 25: ... mode DC Filter ON OFF It is fixed for CD 7 Signal format IIS IN OUT 2 DSP 2 Q509 Digital filter 4fs FIR 3Type mode Noise shaper first order and Round Offset of Output DATA Signal format IIS IN OUT Procedure of DSP The DSP56004 Q507 Q509 loads data of ROM Q506 Q508 at that moment of the product is POWER ON The all param eters of default setting will be done approx 0 5 seconds And then each DSP dev...

Page 26: ...124 22238 ELECT 100µF 25V OA10702550 CD77 4822 123 30361 MICA 56pF 500WV CHIP DF95560500 CD78 4822 126 14578 MICA 1200pF 100WV CHIP DF95122510 CD79 4822 126 14579 MICA 1000pF 100WV CHIP DF95102510 CD87 4822 123 30361 MICA 56pF 500WV CHIP DF95560500 CD88 4822 126 14578 MICA 1200pF 100WV CHIP DF95122510 CD89 4822 126 14579 MICA 1000pF 100WV CHIP DF95102510 C401 4822 126 14578 MICA 1200pF 100WV CHIP ...

Page 27: ... CHIP NI05101110 R457 4822 116 83352 560 Ω 5 1 10W CHIP NI05561110 R458 4822 111 90893 100Ω 5 1 10W CHIP NI05101110 R459 4822 111 90893 100Ω 5 1 10W CHIP NI05101110 R460 4822 116 83229 33kΩ 1 1 10W CHIP NI01333110 R461 4822 116 83352 560Ω 5 1 10W CHIP NI05561110 R462 4822 111 90893 100Ω 5 1 10W CHIP NI05101110 R463 10 0Ω 1 1 4W GM114100G0 R464 10 0Ω 1 1 4W GM114100G0 R471 1 47kΩ 1 1 4W GM11414710 ...

Page 28: ...HIP NI05101110 R784 10 0Ω 1 1 4W GM114100G0 R785 10 0Ω 1 1 4W GM114100G0 R786 4822 116 83253 1 5kΩ 1 1 10W CHIP NI01152110 R787 4822 116 83229 33kΩ 1 1 10W CHIP NI01333110 R788 4822 111 20407 100 0Ω 1 1 4W NR01101140 R789 10kΩ 1 1 4W GM11410020 R790 4822 111 90896 100kΩ 5 1 10W CHIP NI05104110 PA16 SEMICONDUCTORS DD01 4822 130 80318 ZENER DIODE RD6 8JB2 MTZJ6 8C HD30681000 DD02 4822 130 32362 DIOD...

Page 29: ...201701H0 Q707 4822 130 62649 F E T 2SJ74 V HF100741H0 Q721 4822 130 42843 F E T 2SK389 GR BL HF203892A0 Q722 4822 130 61425 CHIP TRS 2SC2873 Y HX328731B0 Q723 4822 130 63928 CHIP TRS 2SA1312 B HX113121B0 Q724 4822 130 63928 CHIP TRS 2SA1312 B HX113121B0 Q725 4822 130 63929 CHIP TRS 2SC3324 B HX333241B0 Q726 5322 130 41844 F E T 2SK170 V HF201701H0 Q727 4822 130 62649 F E T 2SJ74 V HF100741H0 Q751 ...

Page 30: ... 16V OA22701620 C851 4822 124 12405 ELECT 4700µF 20 35V OB47803520 C852 4822 124 12405 ELECT 4700µF 20 35V OB47803520 C855 F 4822 124 22238 ELECT 100µF 20 25V OA10702550 C855 K 02 4822 124 80119 ELECT 100µF 20 25V OA10702540 C856 F 4822 124 22238 ELECT 100µF 20 25V OA10702550 C856 K 02 4822 124 80119 ELECT 100µF 20 25V OA10702540 C857 4822 124 22242 ELECT 470µF 20 25V OA47702550 C858 4822 124 2224...

Page 31: ...01000 DY66 4822 130 32362 DIODE 1SS176 MA165 1SS254 30V 0 1A HD20002000 D301 4822 130 83715 CHIP DIODE DAN202U HZ21005000 D801 4822 130 80839 DIODE S5688G 1A VRM 400V HD20029050 D808 D811 4822 130 80839 DIODE S5688G 1A VRM 400V HD20029050 D814 D815 4822 130 80318 ZENER DIODE RD6 8JB2 MTZJ6 8C HD30681000 D821 4822 130 80839 DIODE S5688G 1A VRM 400V HD20029050 D824 D851 4822 130 82422 DIODE EK16LF V...

Page 32: ...7 11192 CHIP INDUCTANCE 3 3 UH NL322522 LU12332010 L306 4822 158 60654 FERRITE CORE BLM31A02 CHIP INDUCTOR FC90030070 S301 4822 277 21559 SLIDE SW COAX OPT SEL SS02021150 S302 4822 277 21559 SLIDE SW INPUT FORMAT SS02021150 X301 4822 242 10818 CRYSTAL 33 8688MHz JX33001380 X302 4822 242 11032 CRYSTAL 36 864MHz JX36001380 PV16 SERVO DEC MOTOR CIRCUIT BOARD PV16 CAPACITORS CF02 4822 126 11687 CER 0 ...

Page 33: ...9 2 2Ω 5 1 4W FUSIBLE NH05022140 R151 4822 051 30223 22kΩ 5 1 16W NN05223610 R157 R158 4822 051 30104 100kΩ 5 1 16W NN05104610 R160 4822 051 30104 100kΩ 5 1 16W NN05104610 R161 4822 051 30101 100Ω 5 1 16W NN05101610 R164 R165 4822 051 30223 22kΩ 5 1 16W NN05223610 R166 4822 051 30332 3 3kΩ 5 1 16W NN05332610 PV16 SEMICONDUCTORS QF01 4822 209 17438 ONE TIME PROM µPD78P078 1 TIME µ COM HS355KN000 QF...

Page 34: ...01610 RY23 4822 051 30101 100Ω 5 1 16W NN05101610 RY24 4822 051 30223 22kΩ 5 1 16W NN05223610 RY25 4822 051 30103 10kΩ 5 1 16W NN05103610 RY26 4822 051 30472 4 7kΩ 5 1 16W NN05472610 RY27 4822 051 30103 10kΩ 5 1 16W NN05103610 RY29 4822 051 30103 10kΩ 5 1 16W NN05103610 RY31 4822 051 30221 220Ω 5 1 16W NN05221610 RY34 RY35 4822 051 30472 4 7kΩ 5 1 16W NN05472610 RY38 PY26 SEMICONDUCTORS DY21 4822 ...

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