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SERVICE MANUAL

COMPACT DISC

STEREO SYSTEM

BASIC TAPE MECHANISM : ZZM-3 PR3NM
BASIC CD MECHANISM : BZG-5 ZD3GNM

NSX-R50
NSX-R51

S/M Code No. 09-01A-449-7N1

• If requiring information about the CD mechanism, see Service Manual of
BZG-5, (S/M Code No. 09-00C-353-3N6).

SPEAKER

SYSTEM

CX-NR50

RC-CAS01

CASSEIVER

REMOTE

CONTROLLER

SX-NR50

NSX-R50

NSX-R51

CX-NR51

Summary of Contents for NSX-R50

Page 1: ...M BASIC CD MECHANISM BZG 5 ZD3GNM NSX R50 NSX R51 K EZ S M Code No 09 01A 449 7N1 If requiring information about the CD mechanism see Service Manual of BZG 5 S M Code No 09 00C 353 3N6 SPEAKER SYSTEM CX NR50 RC CAS01 CD CASSEIVER REMOTE CONTROLLER SX NR50 NSX R50 NSX R51 CX NR51 ...

Page 2: ...IN AUDIO Input VIDEO AUX 500 mV Outputs SPEAKERS 6 ohms or more PHONES 32 ohms or more CASSETTE DECK Track format 4 tracks 2 channels stereo Frequency response 50 Hz 15 kHz Recording system AC bias Heads DECK 1 playback X 1 DECK 2 recording playback X 1 erase x 1 CD PLAYER Laser Semiconductor laser λ 780 nm D A converter 1 bit dual Signal to noise ratio 85 dB 1 kHz 0 dB Harmonic distortion 0 05 1 ...

Page 3: ...tsättas för osynling laserstrålning som överskrider gränsen för laserklass 1 PROTECTION OF EYES FROM LASER BEAM DURING SERVICING CAUTION Use of controls or adjustments or performance of proce dures other than those specified herin may result in hazardous radiation exposure ATTENTION L utillisation de commandes réglages ou procédures autres que ceux spécifiés peut entraîner une dangereuse expositio...

Page 4: ...in power 2 2 2 2 2 Confirm that the main power is turned on and the HOLD terminal of the MICROCOMPUTER keeps the H level or not 3 3 3 3 3 When the HOLD terminal is L level the abnormality detection circuit is judged to be working correctly and the MICROCOMPUTER is judged to be good 1 Forced discharge of electrolytic capacitor of power supply block When repair is going to be attempted in the set th...

Page 5: ... ends of the electrolytic capacitor C113 that is connected to VDD of the MICROCOMPUTER with tweezers 3 3 3 3 3 Connect the AC power cord again If the MICROCOMPUTER returns to the normal operation the MICROCOMPUTER is good Note The reference number or MICROCOMPUTER pin number of transistor Q110 and electrolytic capacitor C113 can change depending on the models Be sure to check the reference numbers...

Page 6: ...87 A12 095 080 CAP E 100 50 SMG C31 87 A12 062 080 CAP E 100 10 SMG C32 87 012 286 080 CAP U 0 01 25 C34 87 A12 072 080 CAP E 100 25 SMG C35 87 A12 071 080 CAP E 47 25 SMG C36 87 A12 067 080 CAP E 330 16 SMG C38 87 012 286 080 CAP U 0 01 25 C60 87 A12 089 080 CAP E 3 3 50 SMG C61 87 A12 071 080 CAP E 47 25 SMG C83 87 A12 068 080 CAP E 470 16 SMG C97 87 010 759 080 C CAP U 0 1 25F C101 87 012 276 0...

Page 7: ...022 25BJ C790 87 016 118 080 C CAP U0 022 25BJ C791 87 010 759 080 C CAP U 0 1 25F C792 87 012 286 080 CAP U 0 01 25 C793 87 A12 090 080 CAP E 4 7 50 SMG C795 87 012 286 080 CAP U 0 01 25 C796 87 012 286 080 CAP U 0 01 25 C797 87 A12 091 080 CAP E 10 50 SMG C798 87 012 286 080 CAP U 0 01 25 C799 87 A12 065 080 CAP E 33 16 SMG C800 87 010 829 080 CAP U 0 047 16 C801 87 A12 089 080 CAP E 3 3 50 SMG ...

Page 8: ... 0 15 1W J R132 87 A00 257 080 RES M F 0 15 1W J R790 87 012 286 080 CAP U 0 01 25 R991 87 012 195 080 C CAP U 100P 50CH R993 87 012 195 080 C CAP U 100P 50CH R995 87 012 195 080 C CAP U 100P 50CH SFR451 87 A90 432 080 SFR 30K H NVZ6TLTA SFR452 87 A90 432 080 SFR 30K H NVZ6TLTA TC942 87 A91 774 080 TRIMMER PLY 30P 6 8X5 4 CDYL TH101 87 A91 042 080 C THMS 100K 55001 TH102 87 A91 042 080 C THMS 100K...

Page 9: ...SHG611BT EZ S349 87 A91 024 180 SW TACT KSHG611BT EZ S350 87 A91 024 180 SW TACT KSHG611BT EZ S361 87 A92 178 010 SW RTRY EC12E2430402 300 OFF S363 87 A92 273 010 SW RTRY EC12E12204 30MM S371 87 A92 273 010 SW RTRY EC12E12204 30MM PT C B C85 87 010 831 080 C CAP U 0 1 16F PT1 8B NF1 601 010 PT BNF 1 EZ PT81 8B MA6 675 010 PT SUB BMA E VRK RY81 87 A91 418 010 RELAY AC12V G5PA 1 M T81 87 A60 317 010...

Page 10: ...C4115BC KTC3198GR E C B 2SA1980G 2SA1981Y 2SA1235F 2SC2620B 2SC3052F 2SC5345S O 2SD1306E CSD1306E DTC114YKA G D S 2SK3053 2SK360E C B G D S E B C E 2SB1370 S D G 2SJ460 2SK2541 B C E 2SB1686 2SD2642 KRA102S KRA107S KRC102S RTK KRC104S RT1P141C SBT5401F SBT5551F ...

Page 11: ... 11 WIRING 1 MAIN HP 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T U ...

Page 12: ... 12 SCHEMATIC DIAGRAM 1 MAIN 1 2 ...

Page 13: ... 13 SCHEMATIC DIAGRAM 2 MAIN 2 2 TUNER ...

Page 14: ... 14 SCHEMATIC DIAGRAM 3 HP ...

Page 15: ... 15 WIRING 2 FRONT LED 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T U ...

Page 16: ... 16 SCHEMATIC DIAGRAM 4 FRONT LED DECK ...

Page 17: ... 17 WIRING 3 PT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T U ...

Page 18: ... 18 SCHEMATIC DIAGRAM 5 PT ...

Page 19: ...4 13 12 11 10 9 8 7 6 5 4 3 2 1 19 A B C D E F G H I J K L M N O P Q R S T U WIRING 4 DECK SW5 CAM2 SW1 CAM1 SOL1 SOL2 SW2 CST1 SW3 REA SW4 CST2 IC2 1 3 IC1 1 3 L H R1 SFR1 TO FRONT C B CN104 FC104 CN1 11 9 7 5 3 1 10 8 6 4 2 W1 M1 TAPE MOTOR L H F DECK C B ...

Page 20: ... 20 IC BLOCK DIAGRAM ...

Page 21: ... 21 ...

Page 22: ... 22 FL BJ854GNK BNF 1 GRID ASSIGNMENT ANODE CONNECTION GRID ASSIGNMENT ANODE CONNECTION ...

Page 23: ...ected to GND 18 VSS0 GND 19 VDD0 Power supply 20 O POWER O System power supply ON OFF output 21 I JOG_A I Dial jog rotary encoder input A 22 I JOG_B I Dial jog ratary encoder input B 23 I VOL_A I Volume rotary encoder input A 24 I VOL_B I Volume rotary encoder input B 25 I SUBQ I CD SUBQ data input 26 I WRQ I CD interrupt signal input 27 I DRF I CD focus ON detect data input 28 I RDS_CLK I Tuner R...

Page 24: ...put Deck 2 side A record OK switch data input 64 70 P24 P18 O FL segment P24 P18 output 71 P17 AM10K O I FL segment P17 output AM10K input to diode not used 72 P16 AMST O I FL segment P16 output AMST input to diode not used 73 P15 LW O I FL segment P15 output LW input to diode 74 P14 SW O I FL segment P14 output SW input to diode not used 75 P13 OIRT O I FL segment P13 output OIRT input to diode n...

Page 25: ... B 15 RVS FWD RPH PH A MAIN C B PATTERN SIDE TC942 R L G SFR452SFR451 SFR451SFR452 IC801 24 5 1 7 L942 L951 L802 L901 L902 L907 L905 L904 L941 6 9 15 5 PARTS SIDE 1 4 2 3 R962 VT GND TP8 TP9 16 3 5 ADJUSTMENT TUNER DECK FRONT 18 18 F ...

Page 26: ...eter indicates 8 0 V or below 4 Adjust the receiving frequency of the unit to 531 kHz 5 Check that the digital multimeter indicates 0 6 V or above 3 VT Adjustment and Check FM Requirements Same as Item 1 1 Connect the digital multimeter to VT and GND 2 Set the unit function to FM and adjust the receiving frequency at 108 0 MHz 3 Adjust L907 so that the digital multimeter indicates 7 0 0 05 V 4 Adj...

Page 27: ...oring the 1 kHz waveform through oscilloscope decrease the S S G output level till slight noises appear in the waveform 4 Adjust L951 1 3 so that the millivoltmeter indicates maximum 7 Tracking Adjustment LW Requirements Same as Item 5 1 Adjust TC942 to the mechanical center 2 Adjust the S S G setting to AM carrier at 144 kHz distortion rate at 30 and source 1 kHz 3 Adjust the unit to LW 144 kHz 4...

Page 28: ... kHz waveform through oscilloscope decrease the S S G output level till slight noises appear in the waveform 4 Adjust L901 902 904 and 905 so that the millivoltmeter indicates the maximum level 10 Separation Check Requirements Same as Item 9 1 Adjust the S S G setting to FM carrier at 83 MHz distortion at 67 5 kHz source at 1 kHz and output at 60 dBuv 2 Switch the S S G to PILOT ON and set to PILO...

Page 29: ...ECK 1 DECK 2 Requirements Measuring instrument Oscilloscope Test tape TTA 300 10 kHz Test point TP8 Lch TP9 Rch Adjustment point Head azimuth adjustment screw 1 Connect the CH1 of the oscilloscope probe to TP8 Lch and the CH2 to TP9 Rch 2 Set the V mode of the oscilloscope to ADD 3 Insert the test tape TTA 300 to DECK 1 Playback the middle part of the tape in the FWD direction and adjust the head ...

Page 30: ...or to attenuator and then attenuator to AUX of the unit 3 Insert the test tape TTA 602 to DECK 2 and record the 1 kHz signal form AUX 4 Adjust the attenuator so that the output levels of TP8 and TP9 become 80 mV 5 Record 1 kHz and 8 kHz alternately 6 Adjust SFR451 Lch and SFR452 Rch so that the playback output level of 8 kHz is ranged within 0 0 5 dB compared to the playback output reference level...

Page 31: ... CLOCK GND 1 While pressing and holding down the POWER button and the UP button insert the AC plug 2 Adjust L951 so that the frequency counter indicates 84 804 0 084 Hz Hz FREQUENCY COUNTER CLOCK GND 1 CLOCK GND L951 1 B FRONT C B PATTERN SIDE B FRONT C B PARTS SIDE Front Section 20 20 ...

Page 32: ...OFF ON Tracking balance check OFF ON repeated every time the PAUSE button is pressed 5 Sled Mode FF button CD TEST PU moves the inner track 2 and Sled circuit check lens is kicked to the inner track Tracking circuit check Mechanism function check PU check FWD button CD TEST PU moves to the outer track 2 and lens is kicked to the outer track 6 Spindle Mode REC REC Alllit When the button is pressed ...

Page 33: ...CTOR CD PLATE BOX COVER MAGNET COVER MAGNET 7 6 3 4 5 1 2 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 32 33 34 49 35 36 37 38 39 40 49 47 48 41 42 43 44 45 46 30 30 31 31 CHAS MAIN ZZM 3 F F F F F F B D B F A E E F F A PWB PWB PWB 51EZSM PWB A G C G BZG 5 A A A A A HT SINK ASSY PT HLDR TR FL ...

Page 34: ...OB RTRY FUN 17 8B NF1 025 010 WINDOW FUN 18 8B NF1 012 010 WINDOW DISP EZ 51EZSM 18 8B NF1 044 010 WINDOW DISP K 50KSM 19 8B NF1 014 010 WINDOW CD 20 8B NF1 005 010 PANEL LEFT 21 8B NF1 007 010 PANEL TOP 22 8B NF1 027 010 REFLECTOR ECO 23 8B NF1 018 010 KEY REC 24 8B NF1 020 010 KEY RDS 51EZSM 25 8B NF1 019 010 KEY OPE 26 8B NF1 016 010 KEY CD 27 8B NF1 017 010 KEY ENTER 28 8A NF8 209 010 OIL DMPR...

Page 35: ... 9 10 11 10 11 12 12 13 13 14 14 15 15 16 16 18 18 19 19 20 20 21 21 30 22 23 24 25 26 27 28 22 23 24 25 26 27 28 29 31 32 33 34 35 36 37 37 38 38 39 39 40 41 42 43 44 51 52 45 46 47 48 49 50 53 54 54 17 55 30 35 29 31 32 33 52 51 44 45 43 42 IC EW732 IC EW732 b a a b c c 40 41 46 47 48 49 PWB ...

Page 36: ... 8Z ZM3 226 010 SPR C FR M3 26 8Z ZM3 250 010 GEAR SLIP F R A M3 27 8Z ZM1 269 010 FELT FF REW 2 28 8Z ZM1 238 110 GEAR SLIP FF REW B 2 29 8Z ZM3 220 010 LEVER FR M3 30 8Z ZM3 205 010 LEVER PLAY M3 31 8Z ZM3 233 010 SPR T BRG M3 32 84 ZM2 227 310 SPR C AZIMUTH 33 87 A92 198 010 HEAD PH HASVH 2504A 34 87 A90 404 010 HEAD EH LE15B 35 8Z ZM3 239 010 SPR E FR 36 8Z ZM3 211 010 LEVER EJECT R 37 8Z ZM3 ...

Page 37: ...stall it turning to clockwise direction until click sound comes out Remove the grill frame and four pieces of rubber caps by pulling out with a flat bladed screwdriver Remove the screws from hole where installed rubber caps Insert a flat bladed screwdriver into the position indicated by the arrows and remove the panel Re move the screws of each speaker unit and then remove the speaker units TOOLS ...

Page 38: ... L 5 8B NSA 005 010 GRILLE FRAME ASSY 6 8B NSA 602 010 SPKR W 160 30 4 7 8B NSK 604 010 SPKR T 60 8 88 NSK 610 010 SPKR CERAMIC ASSY ACCESSORIES PACKAGE LIST DESCRIPTION REF NO KANRI NO PART NO 1 8B NF1 905 010 IB K E M K 1 8B NF1 906 010 IB EZ 9L M EZ 2 87 A90 118 010 ANT WIRE FM EZ 3 87 006 268 010 ANT LOOP AM 4 8B NF1 701 010 RC UNIT CAS01 5 87 099 811 010 PLUG ADPTR CONV K K ...

Page 39: ...2 11 IKENOHATA 1 CHOME TAITO KU TOKYO 110 JAPAN TEL 03 3827 3111 Printed in Singapore 9301978 9720501 921338 ...

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