Aiwa NSX–SZ70 Service Manual
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Aiwa NSX–SZ70 Service Manual

Aiwa NSX–SZ70 Service Manual

Compact disc stereo cassette receiver
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SERVICE MANUAL
COMPACT DISC STEREO
CASSETTE RECEIVER
SYSTEM
NSX–SZ70
NSX-SZ73
• This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
NSX-SZ70/SZ73 (S/M Code No. 09-001-425-3T1).
• If requiring information about the CD mechanisim, see Service Manual of AZG-1
(S/M Code No. 09-001-335-3N8).
CD–CASSEIVER
CX–NSZ70
CX-NSZ73
S/M Code No. 09-004-425-3R1
NSX-SZ70
NSX-SZ73
BASIC TAPE MECHANISM: 2ZM-3MK2 PR4NM
BASIC CD MECHANISM: AZG-1 ZD3RDM
SPEAKER
REMOTE CONTROLLER
SX–WNS70
SX-WNH81
LH
LH
RC–ZAS01

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  • Page 1 NSX-SZ70 NSX-SZ73 SERVICE MANUAL COMPACT DISC STEREO BASIC TAPE MECHANISM: 2ZM-3MK2 PR4NM CASSETTE RECEIVER BASIC CD MECHANISM: AZG-1 ZD3RDM SPEAKER REMOTE CONTROLLER SYSTEM CD–CASSEIVER NSX–SZ70 CX–NSZ70 SX–WNS70 RC–ZAS01 NSX-SZ73 CX-NSZ73 SX-WNH81 • This Service Manual is the “Revision Publishing” and replaces “Simple Manual” NSX-SZ70/SZ73 (S/M Code No.

  • Page 2: Specifications

    SPECIFICATIONS <FM Tuner section> <Speaker system SX–WNSZ70>(NSX-SZ70) Tuning range 87.5 MHz to 108 MHz Speaker system 3 way, Built-in subwoofer(magnetic Usable sensitivity(IHF) 13.2 dBf shielded type Antenna terminals 75 ohms (unbalanced) Speaker units Subwoofer : 160 mm cone type <AM Tuner section> Full range: Tuning range 530 kHz to 1710 kHz (10 kHz step)

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

    PROTECTION OF EYES FROM LASER BEAM DURING SERVICING CAUTION This set employs laser. Therefore, be sure to follow carefully 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 ELETRICAL MAIN PARTS LIST REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 87-010-384-080 CAP, ELECT 100-25V 87-010-406-080 CAP, ELECT 22-50V 8A-NF6-610-030 C-IC,LC876564V-5P35 87-010-381-080 CAP, ELECT 330-16V 87-A21-418-010 IC,STK490-340 87-010-394-080 CAP, ELECT 220-35V 87-A21-397-010 IC,STK490-070 87-010-394-080 CAP, ELECT 220-35V 87-A21-482-010 IC,RPM6938-H4 87-A20-783-040...
  • Page 7 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C384 87-010-402-080 CAP, ELECT 2.2-50V C802 87-012-369-080 C-CAP,S 0.047-50F C386 87-010-196-080 CHIP CAPACITOR,0.1-25 C803 87-010-198-080 CAP, CHIP 0.022 C387 87-012-145-080 CAP, CHIP S 270P CH C804 87-010-263-080 CAP, ELECT 100-10V C388 87-012-156-080 C-CAP,S 220P-50 CH...
  • Page 8 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION FFE831 A8-8ZA-190-030 8ZA-1 FEUNM C386 87-010-196-080 CHIP CAPACITOR,0.1-25 J101 87-A60-483-010 JACK,DIA6.3 BLK ST W/S KM C387 87-010-196-080 CHIP CAPACITOR,0.1-25 J102 87-A60-238-010 TERMINAL,SP 4P (MSC) C392 87-010-320-080 CHIP CAP 68P J601 87-A60-885-010 JACK,PIN 6P R/W MSC...
  • Page 9 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION S102 87-A91-710-010 SW,RTRY 1-2-12 RE012103 PV C221 87-010-405-080 CAP, ELECT 10-50V S301 87-A91-024-180 SW,TACT KSH0611BT C222 87-010-405-080 CAP, ELECT 10-50V S302 87-A91-024-180 SW,TACT KSH0611BT C223 87-010-197-080 CAP, CHIP 0.01 DM S303 87-A91-024-180 SW,TACT KSH0611BT...

  • Page 10: Chip Resistor Part Code

    REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 85-ZM3-602-010 PWB,FLEX A HEAD-2 C.B 85-ZM3-602-010 PWB,FLEX A CON351 87-NF6-616-010 CONN ASSY,8P-RPB CHIP RESISTOR PART CODE Chip Resistor Part Coding Figure Resistor Code Value of resistor Chip resistor Dimensions (mm) Wattage Type...

  • Page 11: Wiring - 1 (Main)

    WIRING - 1 (MAIN) - 11 -...
  • Page 12 SCHEMATIC DIAGRAM - 1 (MAIN 1 / 3: AMP/ VM) - 12 -...
  • Page 13 SCHEMATIC DIAGRAM - 2 (MAIN 2 / 3: DECK / HEAD-1 / HEAD-2) - 13 -...
  • Page 14 SCHEMATIC DIAGRAM - 3 (MAIN 3 / 3: TUNER) - 14 -...

  • Page 15: Wiring - 2 (Front)

    WIRING - 2 (FRONT) - 15 -...
  • Page 16 SCHEMATIC DIAGRAM - 4 (FRONT/ DECK) - 16 -...
  • Page 17 WIRING - 3 (AMP) - 17 -...
  • Page 18 SCHEMATIC DIAGRAM - 5 (AMP) - 18 -...
  • Page 19 WIRING - 4 (PT) - 19 -...

  • Page 20: Schematic Diagram-6 (Pt)

    SCHEMATIC DIAGRAM-6 (PT) - 20 -...

  • Page 21: Wiring - 5 (Deck)

    WIRING - 5 (DECK) - 21 -...
  • Page 22 IC BLOCK DIAGRAM IC,BU2099FV IC,BU2092F IC, BD3876KS2 IC, LA1843 - 22 -...
  • Page 23 IC, LC72131D IC, M61506FP IC,BU9990-03FS - 23 -...
  • Page 24 FL (BJ754 GNK)GRID ASSIGNMENT AND ANODE CONNECTION GRID ASSIGNMENT - 24 -...
  • Page 25 ANODE CONNECTION - 25 -...
  • Page 26 IC DESCRIPTION IC, LC876564W-5P35 Description Pin No. Pin Name O-CLK Common serial CLOCK output. O-DATA Common Serial DATA output. O-STB Common serial STROBE output. O-POWER System power ON/OFF output. O-STB Strobe output for shift register. O-RYM-CS Chip select output for rhythm IC. O-PLL-CE Chip enable output for PLL.
  • Page 27 Pin No. Pin Name Description P22/DSP FL segment P22 output / DSP less diode input. P21/PRO/5.1 FL segment P21 output / PRO-LOGIC 5.1CH diode input (not used). FL segment P20 output. P19/DOBLY FL segment P19 output / Deck DOBLY diode input (not used). FL segment P18 output.
  • Page 28 ADJUSTMENT <TUNER/DECK> A MAIN C.B L802 SFR351 SFR352 L951 L801 IC303 CN351 IC801 R815 (3/3) (1/3) (CLK) FFE831 (VT) TP10 (LCH) TP8 (LCH) TP11 (RCH) TP9 (RCH) IC601 13 12 B FRONT C.B FL201 IC101 TP6 (GND) L101 (K-SCAN) F DECK C.B DECK-1 P,DECK-2 R/P/E HEAD SFR1 - 28 -...
  • Page 29 < TUNER SECTION > 1. Clock Frequency Check 9. Head Azimuth Adjustment (DECK 1, DECK 2) Settings : • Test point : TP2 (CLK) Settings : • Test tape : TTA–300 (315/10kHz) Method : Set to AM 1710kHz and check that the test •...

  • Page 30: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW 1 / 1 AZG-1 P.C.B P.C.B FL201 HT-SINK HT-SINK,VM BINDER, WIRE P.C.B P.C.B 2ZM-3MK2 PLATE, EARTH MECHA BINDER, CHAS,MAIN WIRE - 30 -...

  • Page 31: Mechanical Parts List

    8A-NF7-093-010 WINDOW,DISP LH<70LH> 87-085-221-010 FOOT,H13.5 8A-NF7-096-010 WINDOW,DISP LH73<73LH> 8Z-NB8-254-010 COVER, PL M3 8A-NF7-005-010 PANEL,TRAY U 8Z-NB8-240-010 COVER, PL 87-CE3-023-010 BADGE,AIWA 30N SILV 8A-NF7-209-010 HLDR,PWB-M BTM 8A-NF7-008-010 PANEL,CD 87-067-703-010 TAPPING SCREW, BVT2+3-10 8A-NF8-007-010 PANEL,LEFT V-2 87-067-581-010 TAPPING SCREW, BVT2+3-15 8A-NF8-006-010 WINDOW,TOP...

  • Page 32: Tape Mechanism Exploded View

    TAPE MECHANISM EXPLODED VIEW 1 / 1 PH(DECK 1) RPH(DECK 2) DECK C.B SOL 2 SOL 1 (DECK 2) (DECK 1) HEAD 1 C.B(DECK 1) HEAD 2 C.B(DECK 2) (DECK 1) (DECK 1) (DECK 2) (DECK 2) - 32 -...

  • Page 33: Tape Mechanism Parts List

    TAPE MECHANISM PARTS LIST 1 / 1 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 1 82-ZM3-301-510 CHAS ASSY,M2 36 82-ZM3-339-010 SHAFT,COUPLER N3(DECK 1) 2 82-ZM1-258-110 SPR-T,PINCH L 37 86-ZM1-206-010 BELT,MAIN L 3 82-ZM1-341-110 LVR ASSY,PINCH L2 38 82-ZM1-322-010 SPR-T,FR60 4 82-ZM1-333-010...
  • Page 34 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 35: Cover, Rear

    SPEAKER PARTS LIST SX-WNS70 (YLSL)<NSX-SZ70> REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 1 8Z-NS6-606-110 SPKR, W 160 2 8A-NS7-604-010 SPKR,M 100 3 88-NSK-610-010 SPKR, CERAMIC ASSY 4 8Z-NSY-003-010 CORD,BUSH 5 8A-NS7-017-010 PROTECTOR, 6 88-NS5-610-010 CORD,SPKR 7 88-NS5-611-010 CORD,SPKR B/L 8 8A-NS7-001-010...
  • Page 36 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 9820572 0251431 Printed in Singapore...

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Nsx-sz73

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