Aiwa NSX-SZ2 Service Manual
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Aiwa NSX-SZ2 Service Manual

Aiwa NSX-SZ2 Service Manual

Compact disc stereo cassette receiver
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NSX-SZ2
HR, EZ
SERVICE MANUAL
COMPACT DISC STEREO
BASIC TAPE MECHANISM : ZZM-2 APR1NC
CASSETTE RECEIVER
BASIC CD MECHANISM : 3ZG-3 E8NC
CD
REMOTE
SYSTEM
SPEAKER
CASSEIVER
CONTROLLER
NSX-SZ2 (HR)
CX–NSZ2
SX-NSZ2
RC–AAS08
NSX-SZ2 (EZ)
• This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
NSX-SZ2 (HR, EZ), (S/M Code No. 09-007-433-7T1).
S/M Code No. 09-009-433-7R1

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April 2, 2025

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Summary of Contents for Aiwa NSX-SZ2

  • Page 1 BASIC CD MECHANISM : 3ZG-3 E8NC REMOTE SYSTEM SPEAKER CASSEIVER CONTROLLER NSX-SZ2 (HR) CX–NSZ2 SX-NSZ2 RC–AAS08 NSX-SZ2 (EZ) • This Service Manual is the "Revision Publishing" and replaces "Simple Manual" NSX-SZ2 (HR, EZ), (S/M Code No. 09-007-433-7T1). S/M Code No. 09-009-433-7R1...

  • Page 2: Specifications

    SPECIFICATIONS <FM tuner section> <Cassette deck section> Tuning range 87.5 MHz to 108 MHz Track format 4 tracks, 2 channels stereo Usable sensitivity (IHF) HR: 13.2 dBf Frequency response 50 Hz – 8000 Hz EZ: 16.8 dBf Recording system AC bias Antenna terminals 75 ohms (unbalanced) Heads...

  • Page 3: Protection Of Eyes From Laser Beam During Servicing

    PROTECTION OF EYES FROM LASER BEAM DURING SERVICING This set employs laser. Therefore, be sure to follow carefully CAUTION the instructions below when servicing. Use of controls or adjustments or performance of proce- dures other than those specified herin may result in WARNING!! hazardous radiation exposure.

  • Page 4: Note On Before Starting Repair

    NOTE ON BEFORE STARTING REPAIR 1. Forced discharge of electrolytic capacitor of power supply block When repair is going to be attempted in the set that uses relay circuit in the power supply block, electric potential is kept charged across the electrolytic capacitors (C101, 102) even though AC power cord is removed.
  • Page 5 In such a case, check also if the POWER AMPLIFIER circuit or power supply circuit has any abnormalities or not. 2-2. Regarding reset There are cases that the machine does not work correctly because the MICROCOMPUTER is not reset even though the AC power cord is re-inserted, or the software reset (pressing the STOP key + POWER key) is performed.

  • Page 6: Electrical Main Parts List

    ELECTRICAL MAIN PARTS LIST REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 87-010-406-080 CAP, ELECT 22-50 87-010-112-080 CAP, ELECT 100-16V 87-A21-591-010 C-IC,LC78641NE-D 87-010-247-080 CAP, ELECT 100-50V 87-A21-722-010 IC,LA6548D 87-010-247-080 CAP, ELECT 100-50V 87-A21-419-040 C-IC,NJM14558MD-TE2 87-010-403-080 CAP, ELECT 3.3-50V 8A-NEC-602-010 C-IC,M38B57MCH-E249FP 87-070-083-010...
  • Page 7 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C355 87-010-759-080 C-CAP,U, 0.1-25F C460 87-010-759-080 C-CAP,U, 0.1-25F C356 87-010-759-080 C-CAP,U, 0.1-25F C461 87-012-158-080 C-CAP,S 390P-50 CH C357 87-010-759-080 C-CAP,U, 0.1-25F C462 87-012-158-080 C-CAP,S 390P-50 CH C358 87-010-405-080 CAP, ELECT 10-50V C470 87-A10-039-080...
  • Page 8 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C853 87-012-286-080 CAP, U 0.01-25 J602 87-A60-881-010 JACK,PIN 2P MSP 242V05 PBSN C858 87-010-759-080 C-CAP,U, 0.1-25F J831 87-A60-202-010 TERMINAL,ANT 4P MSP-154V-02<HR> C859 87-010-759-080 C-CAP,U, 0.1-25F J832 87-A60-403-010 TERMINAL,ANT PAL 2P HSP-312V05<EZ> C860 87-012-286-080 CAP, U 0.01-25...
  • Page 9 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C525 87-010-401-040 CAP,E 1-50 SME S208 87-A90-095-080 SW,TACT EVQ11G04M C526 87-012-172-080 CAPACITOR CHIP U 10P CH S209 87-A90-095-080 SW,TACT EVQ11G04M C527 87-012-274-080 CHIP CAP,U 1000P-50B S210 87-A90-095-080 SW,TACT EVQ11G04M C528 87-010-175-080 CAP 560P...

  • Page 10: Transistor Illustration

    TRANSISTOR ILLUSTRATION E C B E C B E C B B C E 2SB1370 KTA1266GR 2SC5342Y CSC4115BC KTC3198GR CSA952K S D G B C E 2SK360E RT1P141C 2SJ460 2SD1933 2SA1235F RT1N441C 2SK2541 2SB1342 2SC2714O CSD1306E 2SC3052F KRA107S 2SC5345S(0) KRA102S KRC104S E C B 2SC5343G...
  • Page 18 WIRING – 3 (DECK) – 18 –...
  • Page 19 WIRING – 4 (CD LOAD / CD DRIVE) – 19 –...
  • Page 21 FL (HNA-10SS15T) GRID ASSIGNMENT & ANODE CONNECTION GRID ASSIGNMENT ANODE CONNECTION – 21 –...
  • Page 22 IC DESCRIPTION IC, M38B57MCH - E249FP Pin No. Pin Name Description — Not used. I-HOLD Hold input. I-TRAY SW CD tray SW AD input. I-D-SW CD door open/close AD detection input (Not used). I-KEY2 Key AD input 2. I-KEY1 Key AD input 1. O-DSP DATA —...
  • Page 23 Pin No. Pin Name Description FL grid output (G1). — Not used. — Not used. FL segment output (P20). FL segment output (P19). FL segment output (P18). FL segment output (P17). FL segment output (P16). FL segment output (P15). FL segment output (P14). FL segment output (P13).
  • Page 24 IC, LC78641NE-D Pin No. Pin Name Description PDO1 Internal VCO control phase comparator output pin. (Pull down) Internal VCO control phase comparator output pin. PDO2 OFF for rough servo, ON for phase servo. (Pull down) VVSS — Internal VCO ground pin. PCKIST —...
  • Page 25 Pin No. Pin Name Description EFLG C1, C2 error correction monitor pin. (Not used) TEST Test input pin. (Connected to GND) Emphasis pin. Which becomes an input pin after reset and can be controlled externally. This EMPH becomes an emphasis monitor pin under control by command. (Not used) MUTEL L channel mute output pin.
  • Page 26 Pin No. Pin Name Description Synchronization signal detection output pin. FSEQ Outputs a high level when the synchronization signal detected from the EFM signal and the internally generated synchronization signal agree. (Not used) Defect pin. Which becomes an input pin after reset and can be controlled externally. This becomes DEFECT the defect monitor pin under control by command.
  • Page 27 ADJUSTMENT <TUNER / DECK / FRONT> < TUNER SECTION ><EZ> < TUNER SECTION ><HR> 1. Clock Frequency Check 1. Clock frequency Check Settings : • Test point : TP2 (CLK) Settings : • Test point : TP2 (CLK) Method : Set to MW 1602kHz and check that the test point is Method : Set to AM 1602kHz and check that the test point is 2052kHz ±...
  • Page 28 < DECK SECTION > 1. Tape Speed Adjustment (DECK 1) 5. REC/PB Sensitivity Check (DECK 1) Settings : • Test tape : TTA–100 Settings : • Test tape : TTA–602 • Test point : TP5 (Lch), TP6 (Rch) • Test point : TP5 (Lch), TP6 (Rch) •...

  • Page 30: Mechanical Parts List

    23 8A-NEC-013-010 PANEL,LEFT 6 8A-NEC-032-010 WINDOW,DISP HR<HRJSC1> 24 8A-NEC-027-110 CABI,REAR EZSC1<EZSC1> 6 8A-NEC-031-010 WINDOW,DISP LH<EZSC1> 24 8A-NEC-021-110 CABI,REAR HRJSM<HRJSC1> 7 87-B00-002-010 BADGE,AIWA 30 ABS SIL 25 8A-NEC-205-010 CABI,BOTTOM 8 86-NFZ-231-010 DMPR,70 26 8A-NEC-201-010 HLDR,PT 9 8Z-NF8-028-110 KNOB,RTRY MIC<HRJSC1> 27 8A-NEC-014-010 PANEL,RIGHT 10 8A-NEC-001-010 CABI,FR<EZSC1>...

  • Page 32: Tape Mechanism Parts List

    TAPE MECHANISM PARTS LIST 1 / 1 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 1 8Z-ZM1-254-310 SPR-C,REEL R 36 8Z-ZM1-220-110 LEVER,REC SENSOR 2 8Z-ZM1-225-110 GEAR,REEL R 37 8Z-ZM1-249-210 SPR-T,FR 3 8Z-ZM1-253-210 SPR-C,AUTO SENSOR 38 8Z-ZM1-242-310 SPR-T,FF/REW 4 8Z-ZM1-217-110 LEVER,AUTO SENSOR...

  • Page 33: Cd Mechanism Exploded View

    CD MECHANISM EXPLODED VIEW 1 / 2 CUSH-G, MAIN CUSH-G, MAIN 3ZG-2 E3 P.C.B – 33 –...

  • Page 34: Cd Mechanism Parts List

    CD MECHANISM PARTS LIST 1 / 2 REF. NO. PART NO. KANRI DESCRIPTION 1 83-ZG3-224-519 HLDR M2 2 83-ZG3-228-619 CHAS,L6 3 83-ZG3-208-019 PULLEY,MOTOR 4 83-ZG3-213-019 LVR,SW 5 83-ZG3-209-619 CAM,SLIDE 6 83-ZG3-207-619 GEAR,TRAY 7 83-ZG3-204-21M GEAR,C 8 83-ZG3-205-019 GEAR,D 9 83-ZG3-211-01K PLATE,DISC 10 83-ZG3-220-21M GEAR,PULLEY 2...
  • Page 35 CD MECHANISM EXPLODED VIEW 2 / 2 P.C.B CD MECHANISM PARTS LIST 2 / 2 REF. NO. PART NO. KANRI DESCRIPTION 1 83-ZG2-262-010 CHAS ASSY,E3 2 87-A90-836-010 PICKUP,KSS-213F 3 83-ZG2-235-010 GEAR,A3 4 83-ZG2-236-010 GEAR,MOTOR 3 5 83-ZG2-205-310 GEAR,B 6 83-ZG2-253-010 SHAFT,SLIDE 5 A 87-261-032-210 V+2-3...
  • Page 36 SPEAKER DISASSEMBLY INSTRUCTIONS Type.1 Type.4 Insert a flat-bladed screwdriver into the position indicated by the TOOLS arrows and remove the panel. Remove the screws of each speaker 1 Plastic head hammer unit and then remove the speaker units. 2 (() flat head screwdriver 3 Cut chisel How to Remove the PANEL, FR Type.2...

  • Page 37: Accessories / Package List

    SPEAKER PARTS LIST (SX-NSZ2) <YJSL, YJSC, YSL, YSC> REF. NO. PART NO. KANRI DESCRIPTION 1 8A-NSM-001-010 GRILLE, FRAME ASSY 2 8A-NSM-008-010 CORD, SPKR 3 8A-NSM-604-010 SPKR, 100 ACCESSORIES / PACKAGE LIST REF. NO. PART NO. KANRI DESCRIPTION 1 8A-NEC-906-010 IB,EZ(9L)B<EZ> 1 8A-NEC-901-010 IB,H(ECA)B<HR>...
  • Page 38 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 9420208 0251431 Printed in Singapore...

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