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Aiwa NSX-SZ20 Service Manual

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SERVICE MANUAL
COMPACT DISC
STEREO SYSTEM
SYSTEM
NSX-SZ20
NSX-SZ21
NSX-SZ20E
SYSTEM
NSX-SZ20
NSX-SZ21
NSX-SZ20E
• This Service Manual is the "Revision Publishing" and replaces
"Simple Manual" NSX-SZ20<HA>, (S/M Code No. 09-99C-423-4T2) and
NSX-SZ20/SZ20E<HR,HA>, (S/M Code No. 09-001-423-4T3).
• If requiring information about the CD mechanism, see Service Manual
of AZG-1 ZD8RDM / YZD8RDM, (S/M Code No. 09-001-335-3N6) and
AZG-1 YZD8RDCM, (S/M Code No. 09-001-335-3NA).
NSX-SZ20
NSX-SZ21
NSX-SZ20E
BASIC TAPE MECHANISM : ZZM-3 PR1NM/YPR1NM
BASIC CD MECHANISM : AZG-1 ZD8RDM/
CD
SPEAKER
CASSEIVER
CX-NSZ20
SX-NSZ22
CX-SNSZ21
SX-SNSZ22
CX-NSZ20E
SX-NSZ22
TAPE MECHANISM
ZZM-3 PR1NM
ZZM-3 YPR1NM
S/M Code No. 09-005-423-4R3
YZD8RDM/YZD8RDCM
REMOTE
CONTROLLER
RC-ZAS02
CD MECHANISM
AZG-1 ZD8RDM
AZG-1 YZD8RDM
AZG-1 YZD8RDCM
HA, HR
LH
HA

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Summary of Contents for Aiwa NSX-SZ20

  • Page 1 NSX-SZ20E AZG-1 YZD8RDCM • This Service Manual is the “Revision Publishing” and replaces “Simple Manual” NSX-SZ20<HA>, (S/M Code No. 09-99C-423-4T2) and NSX-SZ20/SZ20E<HR,HA>, (S/M Code No. 09-001-423-4T3). • If requiring information about the CD mechanism, see Service Manual of AZG-1 ZD8RDM / YZD8RDM, (S/M Code No. 09-001-335-3N6) and AZG-1 YZD8RDCM, (S/M Code No.

  • Page 2: Specifications

    SPECIFICATIONS <FM tuner section> <Compact disc player section> Tuning range 87.5 MHz to 108 MHz Laser Semiconductor laser (λ =780 nm) Usable sensitivity (IHF) 13.2 dBf D-A converter 1 bit dual Antenna terminals 75 ohms (unbalanced) Signal-to-noise ratio 85 dB (1 kHz, 0 dB) Harmonic distortion 0.05 % (1 kHz, 0 dB) <MW tuner section>...

  • 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-A12-036-000 CAP,E 2200-63 SMG<LH,HA> 87-016-495-000 CAP,E 3300-25 M SMG<HR> 87-A21-396-010 IC,STK490-040<HR> 87-A10-520-000 CAP,E 3300-35 M SMG<LH,HA> 87-A21-398-010 IC,STK490-110<LH,HA> 87-016-495-000 CAP,E 3300-25 M SMG<HR> 87-A21-419-040 C-IC,NJM14558MD-TE2 87-A10-520-000 CAP,E 3300-35 M SMG<LH,HA>...
  • Page 7 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C411 87-010-405-080 CAP, ELECT 10-50V C844 87-010-197-080 CAP, CHIP 0.01 DM C412 87-010-405-080 CAP, ELECT 10-50V C850 87-010-260-080 CAP, ELECT 47-25V C452 87-010-382-080 CAP, ELECT 22-25V C851 87-010-197-080 CAP, CHIP 0.01 DM C453 87-010-183-080...
  • Page 8 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION L832 87-005-847-080 COIL,2.2UH(CECS) C908 87-010-322-080 C-CAP,S 100P-50 CH L941 87-A50-022-010 COIL,ANT SW(COI)<HR> C909 87-010-322-080 C-CAP,S 100P-50 CH L942 87-A50-550-010 COIL,OSC SW-2N(COI)<HR> C910 87-010-322-080 C-CAP,S 100P-50 CH L943 87-A50-522-080 COIL,1MH K CEC<HR>...

  • Page 9: Chip Resistor Part Code

    REF. NO. PART NO. KANRI DESCRIPTION S345 87-A91-024-180 SW,TACT KSHG611BT<HA> S345 87-A90-164-080 SW,TACT SKQAB(N)<HR,LH> S346 87-A91-024-180 SW,TACT KSHG611BT<HA> S346 87-A90-164-080 SW,TACT SKQAB(N)<HR,LH> S347 87-A91-024-180 SW,TACT KSHG611BT<HA> S347 87-A90-164-080 SW,TACT SKQAB(N)<HR,LH> S348 87-A91-024-180 SW,TACT KSHG611BT<HA> S348 87-A90-164-080 SW,TACT SKQAB(N)<HR,LH> S349 87-A91-024-180 SW,TACT KSHG611BT<HA>...

  • Page 10: Transistor Illustration

    TRANSISTOR ILLUSTRATION E C B B C E E C B E C B CD1585BC 2SC3331 DTC114ES 2SB1370 CSA952K KTC3199GR CSC4115BC KTA1266GR KTC3198GR S D G 2SK360E 2SJ460 2SK2158 KRC102S 2SA1235F 2SK2541 KRC104S 2SC2714 RT1N141C 2SC3052F CMBT5401 RT1N441C CMBT5551 RT1P141C CSD1306E RT1P144C –...
  • Page 11 FL (HNA-10SS12) GRID ASSIGNMENT AND ANODE CONNECTION GRID ASSIGNMENT ANODE CONNECTION – 11 –...
  • Page 12 WIRING – 1 (MAIN : HR) – 12 –...
  • Page 13 SCHEMATIC DIAGRAM – 1 (MAIN 1 / 2 : AMP <HR>) – –...
  • Page 14 SCHEMATIC DIAGRAM – 2 (MAIN 2 / 2 : TUNER <HR>) – –...
  • Page 15 WIRING – 2 (MAIN : LH,HA) – 15 –...
  • Page 16 SCHEMATIC DIAGRAM – 3 (MAIN 1 / 2 : AMP <LH,HA>) – –...
  • Page 17 SCHEMATIC DIAGRAM – 4 (MAIN 2 / 2 : TUNER <LH,HA>) – –...

  • Page 18: Wiring - 3 (Front)

    WIRING – 3 (FRONT) – 18 –...

  • Page 19: Schematic Diagram - 5 (Front)

    SCHEMATIC DIAGRAM – 5 (FRONT) HR ONLY HR ONLY – –...
  • Page 20 WIRING – 4 (PT) – 20 –...

  • Page 21: Schematic Diagram - 6 (Pt)

    SCHEMATIC DIAGRAM – 6 (PT) – 21 –...

  • Page 22: Wiring - 5 (Deck)

    WIRING – 5 (DECK) FROM B FRONT C. B CN104 D DECK C . B FC104 – 22 –...
  • Page 23 WIRING – 6 (HEAD) – 23 –...

  • Page 24: Ic Block Diagram

    IC BLOCK DIAGRAM – 24 –...
  • Page 25 – 25 –...
  • Page 26 IC DESCRIPTION µ PD780226GF-012-3BA / 014-3BA Pin Name Description Pin No. O-MOTOR DECK MOTOR ON/OFF output. O-SOL1 DECK1 solenoid output. O-SOL2 DECK2 solenoid output. – Not connected. – Not connected. O-SET_LED SET LED ON/OFF output. O-CLEAR_LED CLEAR LED ON/OFF output. O-PRESET_LED PRESET LED ON/OFF output.
  • Page 27 Pin Name Description Pin No. I-SPEANA_L A/D L-input for spectrum analyser level display. I-SPEANA_R A/D R-input for spectrum analyser level display. I-KEY1 Key1 input. I-KEY2 Key2 input. I-KEY3 Key3 input. I-TU_SIG Tuner signal input. AVSS – GND. O-PLL_CLK PLL clock enable output. O-PLL_CE Chip enable output for tuner PLL.
  • Page 28 ADJUSTMENT <TUNER / DECK / MICON> A MAIN C.B <HR> 14 13 L801 TC943 L802 L941 L942 TC941 TP4(DC BAL) IC801 SFR451 SFR452 TP3(DC BAL) TP8 (LCH) L953 L952 (CLK) IC301 TP9 (RCH) TP1(VT) FFE831 A MAIN C.B <LH,HA> 14 13 L801 L802 TP4(DC BAL)
  • Page 29 < TUNER SECTION > 9. SW Tracking Adjustment <HR> Settings : • Test point : TP8(Lch), TP9(Rch) 1. Clock frequency Check • Adjustment location : Settings : • Test point : TP2 (CLK) L941 ..........5.9MHz Method : <HR,HA> TC943 .........17.9MHz Set to MW 1602kHz and check that the test point is Method : Set up TC943 to center before adjustment.
  • Page 30 B FRONT C.B FL901 D981 D984 <HR> <HA,LH> TP11 IC901 L951 C913 < CR NETWORK FILTER > 1SS133 10µF 10µF TP11 (KEY-SCAN) FREQUENCY 0.1µF COUNTER (GND) DECK–1 P HEAD D DECK C.B DECK–2 R/P/E HEAD SFR1 < DECK SECTION > 12.

  • Page 31: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW 1 / 1 AZG-1 ZD8RDM <HR,HA> AZG-1 YZD8RDM <LH> AZG-1 YZD8RDCM <EHA> P.C.B WIRE,BINDER FL901 P.C.B HT-SINK P.C.B PLATE,EARTH MIC CHAS,MAIN ZZM-3 PR1NM <HR,HA> PLATE,EARTH MECH ZZM-3 YPR1NM <LH,EHA> – 31 –...

  • Page 32: Mechanical Parts List

    BOX,CASS 2 87-NF4-217-110 HLDR,LOCK 2 8A-NF8-207-010 SPR-T,EJECT 1 87-NF4-221-010 HLDR,CABLE<EXCEPT HR> 8A-NF8-208-010 SPR-T,EJECT 2 87-085-185-010 BUSHING, AC CORD (E)<EXCEPT LH> 87-CE3-023-010 BADGE,AIWA 30N SILV 87-A91-422-010 BUSHING,AC CORD(U)<LH> 8A-NF9-018-010 KNOB,RTRY JOG 8Z-NB8-240-010 COVER, PL 8A-NF8-209-010 OIL-DMPR,120 8A-NF8-008-010 PANEL,RIGHT V-2 8A-NF9-017-010 PANEL,JOG 8A-NF9-056-010 CABI,REAR LHSFD<EHA>...

  • Page 33: Tape Mechanism Exploded View

    TAPE MECHANISM EXPLODED VIEW 1 / 1 TERMINAL,LB1 TERMINAL, IC, EW732 IC, EW732 P.C.B – 33 –...

  • Page 34: Tape Mechanism Parts List

    TAPE MECHANISM PARTS LIST 1 / 1 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 8Z-ZM3-227-010 BELT,MAIN M3 8Z-ZM3-233-010 SPR-T,BRG M3 8Z-ZM3-235-010 BELT,MAIN L 84-ZM2-227-310 SPR-C,AZIMUTH 8Z-ZM1-235-010 PULLEY,MOT 87-A90-403-110 HEAD,RPH MS15R 87-045-347-010 MOT,SHU2L 70 87-A90-404-010 HEAD,EH LE15B 8Z-ZM1-232-010 GEAR,IDL FF/REW 8Z-ZM3-239-010...

  • Page 35: Speaker Disassembly Instructions

    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 36: Accessories / Package List

    SPEAKER PARTS LIST SX-NSZ22 (YJSC,YJSL,YJSC9,YJSK1BL,YJ3SL,YJ7SL,YLSC,YLSL) <HR,HA> SX-SNSZ22 (YLSC3M) <LH> REF. NO. PART NO. KANRI DESCRIPTION 1 8A-NSK-001-010 PANEL,FR 2 8A-NSK-003-010 GRILLE,FRAME ASSY 3 8A-NSK-007-010 PROTECTOR,TWA 4 8A-NSK-602-010 SPKR,W 140<EXCEPT YJSC,YLSC,YJSK1BL> 4 8A-NSJ-602-010 SPKR,W 130<YJSC,YLSC,YJSK1BL> 5 88-NS5-605-010 SPKR,T 60<YJSC9,YJ3SL,YJ7SL,YLSL> 5 8A-NSK-604-010 SPKR,TW 60<YJSC,YJSL,YLSC>...
  • Page 37 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 9820543 0251431 Printed in Singapore...

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