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Marantz MR2020, Service Manual

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Marantz MR2020 Service Manual Download Page 42

system LS2021

Service
Manual

R

Please use this service manual with referring to the user guide ( D.F.U. ) without fail.

74 LS2021 /

9M

LS2021 F,K,KK,U

       Speaker System

POS.

NO

VERS.

COLOR

PART NO.

(FOR PCS)

DESCRIPTION

PART NO.

(MJI)

(VERS. :VERSION, U:U.S.A., F:JAPAN, K:FAR EAST, /X : EUROPE)

   

LS01  

4822 240 10354

LOUDSPEAKER, TWEETER

QK000030R

   

LS02  

4822 240 10355

LOUDSPEAKER, WOOFER

QK000040R

   

LS03  

4822 265 11569

SPEAKER TERMINAL

YT001430R

   

   

   

   

   

   

Summary of Contents for MR2020

Page 1: ... HOW TO DISASSEMBLE 2 1 2 2 REPAIR INTRODUCTION 2 6 2 3 EXPLANATION OF CIRCUITS 2 6 3 SERVICE MODE 3 1 4 1 BLOCK DIAGRAM 4 1 4 2 AM STEREO ADJ F ONLY 4 1 4 3 MICROPROCESSOR DATA 4 1 5 WIRING DIAGRAM 5 1 6 SCHEMATIC DIAGRAM AND PARTS LOCATION 6 1 7B TUNER BOARD ECO5 7B 1 7D TUNER 95 BOARD 7D 1 8 CD NAMI 8 BOARD 8 1 9 EXPLODED VIEW AND PARTS LIST 9 1 10 ELECTRICAL PARTS LIST 10 1 LS2021 Speaker Syst...

Page 2: ...SEOKYO DONG MAPO KU SEOUL KOREA PHONE 82 2 323 2155 FAX 31 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...

Page 3: ... CD Player Channels 2 channels Frequency response 20 20 000 Hz 3 dB S N 82 dB 1000 Hz THD 0 04 1000 Hz Output level 2 V RMS General Power supply 02 version AC 230 V 50 Hz F version AC 100 V 50Hz 60 Hz K version AC 110V 220 V 50Hz 60 Hz KK version AC 220 V 60 Hz U version AC 120 V 60 Hz Power consumption 25 W Power failure backup time APPROX 15 min Dimensions 450 W x 104 H x 308 D mm Weight 5 8 kg ...

Page 4: ...that the top cover will not damaged especially the 4 levers If you don t have the jig you prepare to put some magazine or telephone guide under the MR2020 The height is over 3cm books Fig 1 A jig for MR2020 2 Remove 15 screws as shown in fig 4 Fig 2 The jig on MR2020 Fig 3 Turning over the MR2020 2 1 Fig 4 Position of 15 screws ...

Page 5: ...lifting the bottom case remove the rear panel as shown in fig 5 6 Fig 5 Lifting the bottom case 4 Remove the mains code bush as shown in fig 7 Fig 6 Removing the rear panel 2 2 Fig 7 Removing the mains code bush ...

Page 6: ... 8 Remark for reassemble When you fit the bottom case remove the lid of the bottom case Refer to fig 9 and confirm the arrangement of lead lines for transformer Refer to fig 10 Fig 9 Removing the lid of the bottom case Fig 10 Arrangement of lead lines 2 3 Fig 8 Taking the bottom case apart ...

Page 7: ...magazine or telephone guide under the MR2020 The height is over 3cm books 2 Push the rear panel while keeping hold the top cover see fig 11 below The top cover will move 5mm fig 12 13 Now 4 screws on the top cover will become accessible fig 14 Take out these screws M3 type screw Fig 11 Pushing the rear panel Fig 13 Pushed the rear panel Fig 12 Before pushing the rear panel Fig 14 Positions of 4 sc...

Page 8: ...connected to each other with adhesive tape Separate these parts by pushing the transparent upper part in the middle on CD shaped part from the lower part while holding the lower part 7 The upper part and lower part of the top cover were separated See fig 16 17 Fig 16 The upper part of top cover the reverse side Fig 17 The lower part of top cover and the others 2 5 Fig 15 Positions of 2 screws on t...

Page 9: ...ontinuously 2 3 EXPLANATION OF CIRCUITS FAN OPERATION The voltage added to the diode D852 is depended on the resistance of the thermistor R857 and resistors R855 R858 When the temperature of the heat sink goes up the resistance of the thermisor R857 decreases and the voltage added to the diode D852 increases 1 When the temperature of the heat sink is over 70 degrees Celsius then D852 is on through...

Page 10: ...istake the speaker protection circuit will work as follows through R707 R710 Q704 or Q705 is on and Q706 is on Then 5Pin for Q701 is 0V power IC Q701 will be in power off Therefore the product will be STAND BY status 2 When the VCC CONTROL circuit is working correctly maximum current of R825 is 1A and voltage between R825 load is maximum 0 33V When both terminals of BTL outputs are shorted on outp...

Page 11: ...tage of residual pulse for the collector of QU01 is suppressed to 0 1VP P REMARK When the sensor receives sunlight or a strong light as incandescent top panel might open POPS NOISE KILLER RX72 CX70 and QX70 are the circuit to delay power supply for approx 2 seconds Therefore this circuit prevents pops noise generation when power switch is on or off SUB WOOFER Sub woofer output is composed a low pa...

Page 12: ...shows CLEAR 2 seconds Then all memories will be clear 4 CD TEST MODE 1 Press the button then the sledge move to the outside Press the button then the sledge move to the inside Press the CLEAR button while the sledge is moving then the sledge stop 2 Press the MEMO button then the laser pick up unit is giving out the beam Press the MEMO button again then the laser pick up unit stop beam out All oper...

Page 13: ... RAB OUT H L CD7 CONTROL 27 P02 SCL OUT H L CD7 CONTROL 28 P03 SDA IN OUT H L CD7 CONTROL 29 P04 P_SEN_IN IN H PANEL SENSOR IN 30 P05 P_SEN_OUT OUT H L PANEL SENSOR OUT 31 P06 P_MOTOR_P OUT H L PANEL MOTOR 32 P07 P_MOTOR_N OUT H L PANRL MOTOR 33 VDD 5V 5VS VDD 34 P60 G15 IN N C 35 P61 G14 IN N C 36 P62 G13 AMPON OUT H L AMP POWER ON 37 P63 G12 MUTE OUT H L MUTE 38 P64 G11 _RDS_ON OUT H L RDS_POWER...

Page 14: ...5 1 5 1 5 WIRING DIAGRAM NAMI 8 TUNER 95 or ECO 5 F ONLY CD94V5B1 ...

Page 15: ...6 1 6 1 6 SCHEMATIC DIAGRAM AND PARTS LOCATION PHONE WU09 FROM JU01 ...

Page 16: ...6 2 6 2 SPEAKER OUT 02 02 02 002M ...

Page 17: ... 3 P704 Q708 Q707 Q701 Q705 Q704 Q706 Q703 Q702 Q801 Q805 Q806 Q852 Q851 Q803 Q807 QD01 Q853 PX04 QX70 QN03 QN01 QH01 QN04 QN02 QE04 QE03 QX07 QX03 QX08 QE04 QE02 QX04 QX01 QX02 QX05 QX06 QX09 P804 PH04 PX54 ...

Page 18: ...PS64 02 02 02 CD BOARD NAMI 8 TUNER BOARD TUNER 95 or ECO5 6 4 6 4 ...

Page 19: ...PU04 QU12 QU13 QU14 QU15 QU04 QU03 QU08 QU22 QU26 QU09 QU28 QU27 QU25 QU24 QU23 QU10 QU21 QU16 QU17 1U28 QU06 QU07 QU05 QU18 QU19 QU20 QF51 PS04 PS14 PS54 6 5 6 5 ...

Page 20: ...AM STEREO F VERSION TUNER BOARD ECO 5 From 1131 PA01 QA01 QA04 QA03 QA02 6 6 6 6 ...

Page 21: ...ti plexer Charge pump CONTROL AM FRAME AERIAL Reference Oscillator 1126 1 4 1 4 6 1 stereo 27 28 29 clock data enable clock data enable Version P1 P0 MW LW 31 30 programmable output ports AM RF AM Osc 3 5 1121 VLoop VLoop VLoop VLoop VLoop 2 6 5 43 1103 B C 450kHz 450kHz 450kHz 20 75kHz VStabA VStabB VStabB VStabA VStabB 10 7 MHz 10 7 MHz 35 9 Vcc Vdd Vcc1 7 23 VStabA VStabB 38 34 22 Vcc2 8 ECO5 s...

Page 22: ... Output Scope Voltmeter FM 87 5 108MHz 65 81 74 87 5 108MHz FM MW version 9kHz grid 531 1602kHz VARICAP ALIGNMENT FM RF VCO AM IF AM RF 3 108MHz 87 5MHz 1602kHz 531kHz 5130 check 5123 check 8V 0 2V 4 3V 0 5V 6 9V 0 2V 1 1V 0 4V 1494kHz 558kHz 560kHz 5102 1500kHz 1494kHz 558kHz 560kHz 1500kHz 2106 5102 2106 3142 152kHz 1kHz 1 98MHz 83MHz for Japan 5112 MAX FM 87 5 108MHz FM 87 5 108MHz MW FM MW ver...

Page 23: ...45 2146 2151 2134 2136 2147 2131 2132 4111 6105 6110 3108 3133 4101 4102 4155 2108 2109 2113 2124 7108 4109 4110 4156 3112 3114 3116 3117 3121 2114 2117 3109 3177 3113 4159 3155 3156 3175 2143 2163 3181 2105 6101 9119 A B C A B C 5 4 3 2 1 5 4 3 2 1 3148 3146 3178 3179 4160 4161 7111 7125 4158 3144 4162 4163 2126 2165 2156 3119 2111 4104 2161 2127 7121 3127 2141 2142 2164 2139 2168 3140 7106 3125 ...

Page 24: ...20 1131 I20 1126 E20 1124 G20 1121 E20 1103 D 2 1102 B 2 1101 A 1 9128 A 4 9117 L10 9101 C 6 9100 B 4 7124 M13 7125 I16 7122 M 9 7119 B13 7111 F18 7109 M 7 7105 F 2 7104 E 3 7103 I 9 7102 D 8 7101 G11 4 5 1 2 16 17 18 19 20 21 3 K J N I H G F E D C B A M L K J N I H G F E D C B A M L 4 5 1 2 16 17 18 19 20 21 3 HN1V02H Chip jumper 8 7 6 5 4 3 2 1 6105 z_TEA5759 to from COMBI BOARD Source Selector ...

Page 25: ... 5 0 5W 3110 4822 116 52195 47Ω 5 0 5W 3120 4822 051 20008 CHIP JUMPER 0805 3132 4822 116 52195 47Ω 5 0 5W 3134 4822 051 20224 220kΩ 5 0 1W 3141 4822 117 11148 56kΩ 1 0 1W RESISTORS 3142 4822 100 11163 100kΩ TRIMPOT LIN 3145 4822 117 11449 2 2kΩ 1 0 1W 3146 4822 051 20229 22Ω 5 0 1W 3152 4822 116 83883 470Ω 5 0 16W 3153 4822 051 20471 470Ω 5 0 1W 3154 4822 116 83868 150Ω 5 0 5W 3155 4822 051 20471...

Page 26: ... 4822 051 20331 330Ω 5 0 1W 3134 4822 051 20223 22kΩ 5 0 1W 3147 4822 111 50499 3 3MΩ 5 0 2W 3155 4822 051 20101 100Ω 5 0 1W 3175 4822 117 12955 2 7kΩ 1 0 1W 0805 3177 4822 117 10833 10kΩ 1 0 1W 3178 4822 051 20335 3 3MΩ 5 0 1W 3179 4822 051 20105 1MΩ 5 0 1W 4161 4822 051 20008 CHIP JUMPER 0805 5113 4822 242 80989 FILTER SER SFU450B 457kHz 5130 4822 157 70033 COIL FM OSC 7101 TEA5759H V1 RADIO IC ...

Page 27: ... 8 I Tune 24 Mono FM GND 3 4 RF GND 17 IF GND 26 Dig GND 42 RF GND 1 Ripple AM Osc MW LW SELECTION 6 PILOT Filter Fieldstrength 22 VCC2 TEA5762 FM FRONTEND 1102 A B B AGC 6 3 Fo Osc Out IF Out Ant1 7 1 GND 4 8 a F if F 10 7 MHz f0 fin fif FM MT MT 5 VT 75kHz 10 7MHz VC0 IF AM IF AM AM DET ANTI BIRDY FILTER 2 1 450kHz 450kHz 5111 5112 5114 450kHz 3 DATA ENABLE RDS 4 CLOCK 5 STEREO 6 GND 2 1 1121 4 ...

Page 28: ... 7104 D5 7105 B6 7109 C6 7110 D11 7122 F7 7124 G6 9100 F4 9101 E7 9102 D10 9104 E6 9107 F11 9108 G11 9111 C4 9114 E5 9115 C8 9116 G8 9118 G10 9119 G7 9120 D10 9121 D9 9123 D9 9125 D8 9126 C8 4 1 5 8 b e c b e c b c e e b c 12 1 34 23 c e b 3184 3172 3185 3183 3197 2120 3137 3132 3123 6105 3134 3169 3124 2109 3103 7124 3104 7122 3108 3129 3130 2122 2108 3109 7109 3131 2145 7110 2143 3151 3146 7103 ...

Page 29: ... 150k 12p 4E7 µ 22 0E FE415 G23 22k not in RDS version 04341 only in RDS version 04121 4 3 1 2 15p Toko 7KM 1 3 MT 2 5 4 82p AGC 3 IF AM FM FRONTEND TUNER 95 bis ANTI BIRDY FILTER VC0 MW OSC LW OSC LW MW TEA5762 IF AM AM DET 2152 5107 2151 1126 3177 3151 2162 3164 2160 3162 2161 5121 3150 3188 7101 3107 3181 3132 3124 3172 2130 2143 3155 3154 3146 6107 2144 2142 3167 7110 2127 3184 3144 3143 3186 ...

Page 30: ...5 3139 4822 051 10008 0R 5 0 25W 3140 4822 051 20331 330R 5 0 1W 3141 4822 051 20563 56k 5 0 1W 3142 4822 100 11163 Trimmer 100k 30 0 1W 3143 4822 051 20223 22k 5 0 1W 3144 4822 051 10102 1k 2 0 25W 3145 4822 117 11449 2k2 1 0 1W 3146 4822 051 20479 47R 5 0 1W 3150 4822 051 20472 4k7 5 0 1W 3151 4822 051 20683 68k 5 0 1W 3152 4822 051 20471 470R 5 0 1W 3153 4822 051 20471 470R 5 0 1W 3154 4822 116...

Page 31: ...DISC Motor SLIDE Motor SLIDE Motor FOCUS Servo FOCUS Servo TRACK Servo TRACK Servo SLIDE DISC MOTOR MOTO1 from CD7 MOTO2 from CD7 L P F L P F L P F MOTO2 MOTO1 8 4672MHz DOBM RESET SDA WCLK left channel MSB LSB MSB LSB right channel BCLK TRANSFER OF AUDIO SAMPLES VIA SERIAL INTERFACE OF CD7 CD7 DAC CD Drive CD94V5B1 TDA7073AT MOTOR DRIVER TDA7073AT MOTOR DRIVER Q251 Q252 5V SERIAL DATA INTERFACE D...

Page 32: ...B2 J201 D2 J202 A5 J203 A1 J204 C1 J205 B5 J206 A1 L221 C3 L451 C2 Q201C3 Q221B3 Q251C4 Q252A4 Q271C4 Q401A3 Q425A4 Q451A2 Q471B2 Q475B2 R201C4 R202C4 R203C3 R204C3 R205C4 R206C4 R209C4 R210D3 R211D3 R212D3 R213D3 R214C3 R215D2 R216C3 R217C4 R219C4 R220C4 R222B4 R223B4 R224B4 R225B3 R229B3 R230B4 R231B4 R232B4 R233B4 R234B4 R235B4 R236A4 R237A3 R238A3 R240B3 R241B3 R242C4 R251C4 R252C4 R253C4 R254...

Page 33: ...G5 C262 G6 C263 G5 C265 H5 C266 H5 C267 G6 C268 H6 C271 D7 C401 J7 C402 J7 C411 J8 C412 I8 C413 J11 C414 I11 C451 J10 C452 I9 C453 J10 C454 I10 C455 J10 C456 I10 C459 J9 C460 J10 C461 J11 D221 B11 F201 J14 F202 J14 F203 I14 F204 I14 F207 B14 F411 J12 F412 I12 J201 B3 J202 F3 J203 B14 J204 I14 J205 F14 J206 A14 L221 B9 Q201 C5 Q221 D11 Q251 E4 Q252 G4 Q401 J7 Q425 H7 Q451 I10 R201 C8 R202 D8 R203 D...

Page 34: ... 5 1 16W NN05103610 R206 R209 4822 126 12339 CER 2200PF 10 DK96222300 R210 4822 051 30223 CHIP 22kΩ 5 1 16W NN05223610 R212 4822 051 30332 CHIP 3 3kΩ 5 1 16W NN05332610 R213 4822 051 30223 CHIP 22kΩ 5 1 16W NN05223610 R214 4822 051 30104 CHIP 100kΩ 5 1 16W NN05104610 R215 4822 116 82487 CHIP 0Ω 5 1 16W NN05000610 R219 4822 051 30472 CHIP 4 7kΩ 5 1 16W NN05472610 R222 4822 051 30224 CHIP 220kΩ 5 1 ...

Page 35: ...COMMANDER RC2020MR ZK298J0010 NOT STANDARD SPARE PARTS 001S F U PACKING CASE MR2021 298J801010 003S F U CUSHION L 298J809010 004S F U CUSHION R 298J809020 020S F MASTER CARTON CASE MR2020 298J801030 010T CLAMPER ASSY 298J005500 014T F USER S CARD 145J865210 020T F LABEL FLY SHEET JAPANESE 298J861110 020T 2 K KK U LABEL FLY SHEET ENGL1S4 298J861120 021T 2 SHEET FOR REMOCON ETC 298J107040 055T SCHEM...

Page 36: ...822 410 12283 BUTTON FRONT STANDBY 298J270020 007G 4822 410 12282 BUTTON FRONT OPEN CLOSE 298J270030 021G 4822 462 11165 LEG FRONT 298J057010 023G 4822 502 13315 B T SCREW W TL FOR LEG FRONT BOTTOM CASE 51290308M0 025G 4822 462 11166 LEG REAR 298J057020 026G 4822 462 11167 LEG FOR FRONT 298J057050 027G 4822 462 11168 LEG FOR REAR 298J057030 028G 4822 535 10629 PIN FOR FRONT LEG 298J254020 029G 482...

Page 37: ...G 0 7 0 G 0 7 2 G 0 0 3 G 5 1 2 8 3 X6 U 0 9 0 G 0 0 7 G 9 1 9 G P S 7 4 W 0 0 1 9 0 1 G 5 1 2 8 3 X8 U 9 0 7 G 5 1 2 8 3 X8 M 9 1 7 G 9 0 9 G 5 1 2 8 3 X8 U 9 2 3 G 9 2 5 G 0 4 9 M 0 4 5 M x 2 5 1 3 0 2 X6 A 0 4 1 M 0 4 7 M x 2 0 4 9 Bx 2 PD0 4 0 2 3 Bx 4 0 2 6 Bx 2 5 1 2 8 3 X8 M PX0 4 5 1 2 8 3 X8 M 0 4 7 G 5 4 0 5 3 R 0 4 7 B F ONL Y PA0 4 5 1 2 8 3 X8 M 0 1 0 B PU0 4 0 8 7 G VU0 1 M7 0 7 5 1 ...

Page 38: ...7 ELECT 3300µF 35V RE3 EA33803570 C807 4822 124 90367 ELECT 2200µF 25V OA22802520 C808 4822 124 22695 ELECT 2200µF 35V OA22803520 C809 4822 124 80582 ELECT 4700µF 16V OA47801620 C810 4822 122 30043 CER 0 01µF 80 20 50V DK18103310 C811 4822 124 12399 ELECT 3300µF 6 3V RE3 EA33800670 C812 4822 124 41543 ELECT 1µF 50V OA10505020 C814 4822 124 90355 ELECT 100µF 50V OA10705020 C815 4822 124 90362 ELECT...

Page 39: ... 100µF 6 3V EJ10700610 QS51 4822 130 11494 PHOTO UNIT RPM6936 V4 IR SENSOR HW10004210 SS51 4822 276 20508 PUSH SW EVQ11L05R SP01013370 PS64 DOOR SW ASSY CIRCUIT BOARD SS61 4822 276 20508 PUSH SW EVQ11L05R SP01013370 PU04 µ COM ASSY CIRCUIT BOARD PU04 CAPACITORS CF22 4822 126 11558 CER 0 1µF 80 20 50V DA17104110 CF49 2 4822 126 10408 CER 220pF 10 B 50V DA16221110 CF50 2 4822 126 10408 CER 220pF 10 ...

Page 40: ...10001000 QU04 4822 130 61892 TRS 2SD2144S U V HT421442A0 QU05 2 4822 130 41947 TRS 2SC2458 2SC1740S 2SC3199 ETC HT30001000 QU06 2 4822 130 61227 DIG TRS DTA114ES UN4111 10K 10K BA10001000 QU07 2 4822 209 17372 IC SAA6588 RDS DECODER HC10174490 QU08 4822 130 42715 TRS 2SA1048 2SA933S 2SA1267 ETC HT10001000 QU09 4822 130 42715 TRS 2SA1048 2SA933S 2SA1267 ETC HT10001000 QU10 4822 209 17376 MICROPROCE...

Page 41: ...352 ELECT 10µF 16V OA10601620 CX70 4822 124 11574 ELECT 1000µF 16V RE3 EA10801670 CX71 4822 122 30043 CER 0 01µF 80 20 50V DK18103310 CX72 4822 124 41539 ELECT 47µF 16V OA47601620 CX73 4822 122 30043 CER 0 01µF 80 20 50V DK18103310 PX04 CAPACITORS COMMON HIGH DIELECTRIC CONSTANT CER CAPACITOR 10 50V CE33 CE34 CE39 CE40 CH05 CH06 CH13 CH14 CX03 CX16 CX81 CX82 PLASTIC FILM CAPACITOR 5 50V CE01 CE08 ...

Page 42: ...hout fail 74 LS2021 9M LS2021 F K KK U Speaker System POS NO VERS COLOR PART NO FOR PCS DESCRIPTION PART NO MJI VERS VERSION U U S A F JAPAN K FAR EAST X EUROPE LS01 4822 240 10354 LOUDSPEAKER TWEETER QK000030R LS02 4822 240 10355 LOUDSPEAKER WOOFER QK000040R LS03 4822 265 11569 SPEAKER TERMINAL YT001430R ...

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