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ORDER No.MD0004056C2 

 

CD Stereo System  

 

SA-AK48 

Colour 

(S)........Silver Type 

Areas 

(E)........Europe and Russia. 

(EB)......Great Britain. 

(EG)......Germany, France and Italy. 

TAPE SECTION : AR2 MECHANISM SERIES 

CD SECTION : RAE0152Z-M TRAVERSE DECK SERIES 

SYSTEM : SC-AK48 

 

Specifications

•AMPLIFIER SECTION

  

 

 

RMS power output

  

 

  

THD 10%, both channels driven

  

  

(HIGH) 40W per channel (6

Ω

)/(MID) 40W per channel (6

Ω

)/(LOW) 120W per channel (6

Ω

)/(TOTAL) 200W per channel (6

Ω

 

/Input sensitivity

  

 

  

AUX

  

250mV 

 

Input inpedance

  

 

  

AUX

  

13.9k

Ω

 

    

 

•FM TUNER SECTION

  

 

 

Frequency range

  

87.50 - 108.00MHz/(50kHz  steps) 

 

Sensitivity

  

1.8

μ

V (IHF) 

  

S/N 26dB

  

1.5

μ

 

Antenna terminal (s)

  

75

Ω

 (unbalanced) 

    

 

•AM TUNER SECTION

  

 

 

Frequency range

  

552 - 1629kHz (9kHz steps) 

 

Sensitivity

  

 

  

S/N 20dB (at 999kHz)

  

560

μ

V/m 

    

 

•CASSETTE DECK SECTION

  

 

 

Track system

  

4 track, 2 channel 

    

 

Heads

  

Summary of Contents for MD0004056C2

Page 1: ...LIFIERSECTION RMS power output THD 10 both channels driven HIGH 40W per channel 6Ω MID 40W per channel 6Ω LOW 120W per channel 6Ω TOTAL 200W per channel 6Ω Input sensitivity AUX 250mV Input inpedance AUX 13 9kΩ FM TUNER SECTION Frequency range 87 50 108 00MHz 50kHz steps Sensitivity 1 8μV IHF S N 26dB 1 5μV Antenna terminal s 75Ω unbalanced AM TUNER SECTION Frequency range 552 1629kHz 9kHz steps S...

Page 2: ... S951 S971 2 REC INH SW detection error H02 Recording not possible Faulty contact or short circuit of REC INH switch S974 S975 3 HALF SW detection error H03 Playback can not perform Faulty contact or short circuit of HALF switch S952 S972 4 Reel Pulse detection error F01 The tape advances slightly and then stops Faulty reel pulse faulty hole detect IC IC951 IC971 5 TPS abnormal F02 Cassette deck w...

Page 3: ...DJ button is pressed F17 BOTTOM switch S5 NG Check Replace 4 Transmission error between CD servo LSI and micon F26 CD does not function This error occurs when the POWER is ON for the CD block and an error is detected after the transmission has started 5 Startup fails even when you insert CD or the selected disc tray does not open F27 Tray 1 detect switch or Tray 2 detect switch NG Check Replace 6 ...

Page 4: ...REVIOUS NEXT TOP PREVIOUS NEXT No Error Error Display Problem Condition 1 POWER AMP output abnormal F61 When POWER is switch on power become off automatically During normal operation if DC DET become L PCNT shall become L and the error display on the left shall be displayed IC500 ...

Page 5: ......

Page 6: ......

Page 7: ... R706 1K I H G F E D C C742 0 027 B A R701 4 7 C701 6 3V33 CN701 RF TP29 C716 820P TJ701 A B C D E D E C A B D C B A C751 0 1 C750 0 1 VREF C702 0 1 C706 2700P C707 0 027 C704 0 1 C703 6 3V100 Q701 2SA1037AKSTX LASER POWER DRIVE IC701 AN8839NSBE2 SERVO AMP IC703 AN8739SBE2 FOCUS COIL TRACKING COIL TRAVERSE MOTOR SPINDLE MOTOR DRIVE TRACKING COIL FOCUS COIL 0 1 2 12 11 3 8 10 5 4 9 680P 680P 1K 0 1...

Page 8: ...14 TP13 TP12 TP8 TP7 TP6 TP4 TP2 I H G F E D C B A S701 REST TP16 C745 1000P A B C D E F G H I G F E D C B A A B C D E F G H I R712 220 C718 0 22 C717 0 1 C744 8200P R709 68K R741 47K R711 82K C722 10P X701 16 9344MHz C721 10P C724 0 1 C723 10V220 IC702 MN662790RSC SERVO PROCESSOR DIGITAL SIGNAL PROCESSOR DIGITAL FILTER D A CONVERTER B 2 Rch OUT RST STAT SUBQ SQCK BLKCK P GND MDATA MCLK TX B 1 D G...

Page 9: ...R1173 10K D1172 MA8047MTX R1174 10K C1174 50V4 7 D1174 MA8036HTX C1184 1500P R1172 330 R1170 1K C1173 0 01 ERASE CURRENT CHECK POINT Q1173 DTC144TKA146 BIAS OSC CONT CrO2 Q1101 2SJ498CDTA HEAD SELECT REC ON Q1103 2SJ498CDTA HEAD SELECT PLAY ON Q1104 2SJ498CDTA HEAD SELECT PLAY ON Q1102 2SJ498CDTA HEAD SELECT REC ON G D S Q1175 1176 2SC2002KTA BIAS OSC Q1174 2SC2412KT96R BIAS OSC CONT L1202 47 H Q1...

Page 10: ... 0 01 R1116 390K C1130 820P C1132 820P C1144 50V4 7 R1122 33K R1124 10K R1126 1K C1140 16V10 C1141 50V0 1 R1134 470K C1142 0 022 R1133 3 3K C1134 50V4 7 Q1108 DTC144TKA146 P B EQ REC EQ CrO2 H SPEED A B C D E F 2 R1206 220 Q1203 2SD965RTA MOTOR DRIVE W1200 A B Q1206 1207 2SB621RTA SOLENOID DRIVE Q1206 Q1207 R1221 2 7 R1225 2 7 C1201 16V100 Q1208 Q1209 R1226 1K R1227 1K D1202 MA111TX D1201 MA111TX ...

Page 11: ... E R1145 10K C1145 16V10 F B A C B C C1150 10V47 R1139 10K D1173 MA111TX 47K 47K Q1151 1152 DTC144TKA146 SWITCHING PLAY ON Q1152 Q1151 C1162 16V100 A E D R1196 47K R1161 4 7K Q1116 R1197 47K R1162 4 7K C1152 16V10 Q1115 R1186 1K Q1115 1116 2SD2114K1V MUTING C1186 10V47 R1156 220 Q1154 Q1153 1154 2SC2412KT96R BUFFER AMP C1154 1000P C1153 1000P R1155 220 Q1153 R1152 1M R1154 1 2K R1153 1 2K C1166 16...

Page 12: ...00P R1233 2 2K C1187 100P R1236 4 7K R1235 4 7K C1202 0 1 R1230 4 7K 10K 4 7K 10K 4 7K R1232 1K R1106 2 2K D C B A Q1218 DTA114EKA146 SWITCHING REC ON Q1220 DTA143XKA146 MOTOR DRIVE D E F C B A 1 2 3 4 5 6 7 4 7K 50K 25K 4 7K 4 7K 4 7K 50K 50K 50K 50K 25K 25K Z1101 SCHEMATIC DIAGRAM 6 To MAIN DSC CIRCUIT CN304 on SCHEMATIC DIAGRAM 9 E To FL CIRCUIT H600 on SCHEMATIC DIAGRAM 13 K TP10 TP9 0V 4 8V 0...

Page 13: ... A B C D E F IC102 LC72131MDTRM PLL FREQUENCY SYNTHESIZER AM ANT EXT LOOP FM ANT 75 JK101 SCHEMATIC DIAGRAM 7 MAIN TUNER CIRCUIT R103 100 C101 0 01 C102 16V100 2 3 4 5 6 7 8 2SC2996 BUFFER AMP 2SC2996 BUFFER AMP 2SK360 FM OSC 2SK238 RF AMP 1 22P 15P 1P 18P 0 47 H 8P 100K 0 022 2 7K 47P 3P 33K 100K 8P 8P 10K 10K 22 33K 33K 100K 8P 0 022 100 330 7P 4P 22P 1P 4P 220P 1 5M 10K 1 H 220 0 022 0 022 150 ...

Page 14: ...19 560P C116 0 033 R143 22K C115 25V4 7 R120 47K C109 1000P C114 50V3 3 R118 3 3K A D B C R104 10K C103 0 01 R109 330 C104 1000P R105 470 CF201 R106 470K 1 3 2 CF202 IC101 LA1833NMNTLM FM AM IF AMP DET AM OSC MIX FM MPX Q106 KRA102MTA POWER SUPPLY FM ON 9 8 7 6 5 SD Lch OUT GND CL DO DI CE Rch OUT To MAIN DSC CIRCUIT on SCHEMATIC DIAGURAM 9 B Q102 2SC2058SPTA FM IF AMP Q101 2SC2058SPTA FM IF AMP R...

Page 15: ...R208 10K R415 1K R215 1K R454 10K R300 4 7K C301 1000P R210 1K R410 1K R409 47K R209 47K M N Q351 KRC102STA PLUNGER DRIVE Q350 2SB621ARSTA PLUNGER DRIVE R349 10K R350 1K D316 RL1N4003S P C236 0 47 R346 22K R345 220 14 2 1 3 4 5 6 7 8 9 10 11 12 13 CN1 PLUNGER S2 TRAY POSITION2 DET S1 TRAY POSITION1 DET S3 OPEN DET IC1 TA7291P MOTOR DRIVE A B C D 14 2 1 3 4 5 6 7 8 9 10 11 12 13 8 7V M 1 2 3 4 5 6 ...

Page 16: ...IDEO MD TUNER TAPE PB CD EXT IN PHONO AUX AVss AGND PHONO AUX EXT IN CD TAPE PB TUNER VIDEO MD DEL L ch R ch 33 GRAPHIC EQUALIZER GRAPHIC EQUALIZER C314 150P R323 2 2K R455 10K R456 4 7K R453 4 7K R452 10K C423 50V10 R418 3 3K R417 68K R416 2 2K C420 1000P C422 470P C421 0 068 C313 0 1 C316 150P R324 2 2K R325 2 2K P Q R216 2 2K R217 68K R218 3 3K C220 1000P C222 470P C221 0 068 C223 50V10 D302 UD...

Page 17: ...20K D315 D317 1SS355TE17 D315 D317 R232 3 9K R357 100K R356 15K D201 R230 47K C234 0 068 R234 2 2K C240 50V3 3 C241 100P R231 18K R240 43K C235 6800P D201 1SS355TE17 R440 43K D401 1SS355TE17 R430 47K D401 C441 100P R431 18K C435 6800P C434 0 068 R432 3 9K R434 2 2K C440 50V3 3 C436 100P R444 22K R342 18K R334 240K R336 18K R337 8 2K C322 0 068 C321 10V33 R343 6 8K C323 0 068 C327 0 1 C328 0 047 C3...

Page 18: ...I AMP R647 2 2K R677 2 7K R645 4 7K S601 TRI AMP LOW S640 TRI AMP MID S641 TRI AMP HIGH R602 6 8K CP600 CN600 R936 10K F G H I S611 TAPE R610 1K S608 CD R607 1K S605 TUNER R603 1 2K R641 1 8K S602 AUX MD S628 ECD MODE R639 1K S621 PLAY REC R634 1K S625 CLOCK TIMER R629 1 2K S631 RANDOM R604 1 8K S619 DISPLAY DEMO R600 2 2K S615 S WOOFER VBASS R623 2 7K R635 4 7K R630 6 8K R618 10K S614 EQ R615 22K...

Page 19: ...ER SUPPLY CONT Q610 2SA933SSTA POWER SUPPLY R938 4 7K R937 470K D643 RVD1SS133TA 1 2 3 VDD GND OUT Z602 RCDRPM6937H4 REMOTE SENSOR R700 47 C640 50V4 7 C622 0 01 R950 22K D644 RVD1SS133TA D645 RVD1SS133TA R658 100 B A C D E R662 1K C613 680P C614 680P IC601 BU2090AF E2 LED DRIVE C611 0 1 8 9 7 10 6 11 5 12 4 13 3 2 1 14 15 16 MUTE A CLK LEDCTL REC PLAY TIMER G5 G4 G3 G2 G1 Vcc DATA GND CD PCONT D60...

Page 20: ...Q608 C659 56P C657 68P C661 56P X601 32 7KHZ C654 18P C651 15P R920 330K R918 10M R919 100 R926 1K R964 10K X Y S U T Q607 KRC103MTA RESET R932 22K R933 470 C655 100P C662 50V2 2 D638 RVD1SS133TA R949 22K R911 47K C647 0 01 C652 100P C658 50V1 D628 1SS291TA D627 1SS291TA G I H K M L J N L603 3 3 H D630 MA723TA R678 680 C625 6 3V1000 C623 1000P C624 6 3V100 C626 1000P R961 10K D646 RVD1SS133TA O P ...

Page 21: ... 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 46 47 FL DISPLAY 3 44 45 48 49 51 52 53 5 C612 35V22 C660 50V3 3 R922 68 R925 68 L605 100 H D636 MA4020LTA R907 100K R701 330 A B C D E F G H I J K L M N O P Q R S T U V W A B C D E F G H I J K L M N O P Q R S T X U V C653 10V330 C634 35V22 R914 100K L604 100 H D637 1SS291TA A B C Q605 606 KTC319...

Page 22: ...R507 4 7K R509 3 3K 10 11 C593 50V10 R526 4 7K R580 18K R581 18K R549 15K R550 15K R568 22K R508 4 7K R561 10K C547 6 3V100 P GND B 5 LED9V 12 2 1 3 4 5 6 7 8 9 H Lch IN CD B 3 10 11 GND1 H Rch IN LOW Rch IN GND1 LOW Lch IN DC DET P CONT HP SW F CP501 D502 RL1N4003S P D503 RL1N4003S P A B E B F A C D R511 1M C506 1800P R510 18K C504 1800P R525 18K C517 50V1 C555 1800P C548 1800P R570 10K R566 20K ...

Page 23: ...TA D526 1D3E C574 35V3300 D524 1D3E C571 35V3300 C573 35V5600 C583 0 18 R593 820K D521 1D3E C578 0 01 R594 3 3K R574 2 7K D528 RVD1SS133TA D528 D522 MTZJ15CTA R577 2 2 D520 1D3E R572 2 2 Q519 2SB1436R POWER SUPPLY Q516 KTC3199GRTA POWER SUPPLY CONT C546 100V10 R569 3 9K R551 2 2K Q509 KRC110MTA SWITCHING Q512 2SC1740SSTA RELAY DRIVE D513 KBP152G4R5 Q508 KTC3199GRTA SWITCHING C537 6 3V220 R539 56K ...

Page 24: ...V1000 R983 2 2K D982 MTZJ6R8BTA R984A 150 C980 0 01 C981 25V47 D981 1D3E R985 22 18 R980 18 D978 1D3E T501 Q975 2SC1740SSTA RELAY DRIVE R978 1K R979 W500 T502 F1 T2A W1A W2A W1A W2A Z501 L500 JK500 AC IN POWER TORANSFORMER CIRCUIT M SCHEMATIC DIAGRAM 18 AC IN CIRCUIT N 230V 50Hz E EG 230 240V 50Hz EB For E EG areas For EB area D979 980 985 986 1D3E R979 RSFMB40KT L AC23 0V AC23 0V AC10 8V AC10 8V ...

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