Aiwa NSX-VC38 HR Service Manual
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Aiwa NSX-VC38 HR Service Manual

Compact disc stereo systems
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SERVICE MANUAL
COMPACT DISC STEREO SYSTEM
SYSTEM
NSX–VC38
• This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
NSX-VC38 <HR> (S/M Code No. 09-004-430-3T1).
• If requiring information about the CD mechanism, see Service Manual of AZG-1,
(S/M Code No. 09-001-335-3NG).
NSX-VC38
BASIC TAPE MECHANISM : 6ZM-3 PR2NM
BASIC CD MECHANISM : AZG-1 VZD3RDM
CD
CASSEIVER
CX–NVC38
S/M Code No. 09-006-430-3R1
REMOTE
SPEAKER
CONTROLLER
SX–NBL25
RC–ZAS07
HR, HS

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  • Page 1 All manuals and user guides at all-guides.com NSX-VC38 HR, HS SERVICE MANUAL BASIC TAPE MECHANISM : 6ZM-3 PR2NM COMPACT DISC STEREO SYSTEM BASIC CD MECHANISM : AZG-1 VZD3RDM REMOTE SYSTEM SPEAKER CASSEIVER CONTROLLER NSX–VC38 CX–NVC38 SX–NBL25 RC–ZAS07 • This Service Manual is the "Revision Publishing" and replaces "Simple Manual" NSX-VC38 <HR>...

  • Page 2: Specifications

    All manuals and user guides at all-guides.com SPECIFICATIONS Main unit CX-NVC38 <Compact disc player section> Laser Semiconductor laser (λ =780 nm) <FM Tuner section> D/A converter 1 bit dual Tuning range 87.5 MHz to 108 MHz Signal-to-noise ratio 85 dB (1 kHz, 0 dB) Usable sensitivity (IHF) 13.2 dBf Harmonic distortion...

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

    All manuals and user guides at all-guides.com 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

    All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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

    All manuals and user guides at all-guides.com ELECTRICAL MAIN PARTS LIST REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 87-010-197-080 CAP,CHIP 0.01 DM 87-010-403-080 CAP,ELECT 3.3-50V 87-020-454-010 IC,DN6851 C115 87-010-404-080 CAP,E 4.7-50 M 11L SME 87-A21-398-010 IC,STK490-110 C116 87-010-404-080...
  • Page 7 All manuals and user guides at all-guides.com REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C508 87-016-669-080 C-CAP,S 0.1-25 K B C793 87-010-404-080 CAP,ELECT 4.7-50V C509 87-016-669-080 C-CAP,S 0.1-25 K B C795 87-010-197-080 CAP,CHIP 0.01 DM C510 87-010-184-080 CHIP CAPACITOR,3300P(K)
  • Page 8 All manuals and user guides at all-guides.com REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C995 87-010-178-080 CHIP CAP,1000P C361 87-010-178-080 CHIP CAP,1000P C997 87-010-196-080 CHIP CAPACITOR,0.1-25 C362 87-010-178-080 CHIP CAP,1000P C998 87-010-260-080 CAP,ELECT 47-25V C371 87-010-178-080 CHIP CAP,1000P C999...

  • Page 9: Chip Resistor Part Code

    All manuals and user guides at all-guides.com REF. NO. PART NO. KANRI DESCRIPTION S323 87-A90-164-080 SW,TACT SKNQAB(N) CN101 87-A61-011-010 CONN,13P H BLK TAC-L13P-A3 S324 87-A90-164-080 SW,TACT SKNQAB(N) CN102 87-A61-011-010 CONN,13P H BLK TAC-L13P-A3 S325 87-A90-164-080 SW,TACT SKNQAB(N) CNA101 8A-NF8-656-010 CONN ASSY,5P TID-A 400 S326 87-A90-164-080 SW,TACT SKNQAB(N)

  • Page 10: Transistor Illustration

    All manuals and user guides at all-guides.com TRANSISTOR ILLUSTRATION E C B E C B B C E CD1585 DTC114ES 2SB1370 CSA952 KTC3199 CSC4115 KTA1266 KTC3198 2SA1235 CSD1306 2SK360 2SK2158 2SC2714 KRA104S 2SC3052 KRC102S CMBT5401 RT1P141C CMBT5551 RT1P144C – 10 –...

  • Page 11: Pin Connection

    All manuals and user guides at all-guides.com FL (HNA–10SS12) GRID ASSIGNMENT / ANODE CONNECTION / PIN CONNECTION GRID ASSIGNMENT ANODE CONNECTION PIN CONNECTION – 11 –...

  • Page 12: Wiring - 1 (Main)

    All manuals and user guides at all-guides.com WIRING – 1 (MAIN) <HR> – 12 –...

  • Page 13: Wiring - 2 (Main)

    All manuals and user guides at all-guides.com WIRING – 2 (MAIN) <HS> – 13 –...
  • Page 14 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM – 1 (MAIN : 1 / 3) – 14 –...
  • Page 15 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM – 2 (MAIN : 2 / 3 <DECK SECTION> / HEAD – 1) – 15 –...
  • Page 16 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM – 3 (MAIN : 3 / 3 <TUNER SECTION>) <HR> – 16 –...
  • Page 17 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM – 4 (MAIN : 3 / 3 <TUNER SECTION>) <HS> – 17 –...

  • Page 18: Wiring - 3 (Front)

    All manuals and user guides at all-guides.com WIRING – 3 (FRONT) – 18 –...

  • Page 19: Schematic Diagram - 5 (Front / Deck)

    All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM – 5 (FRONT / DECK) – 19 –...
  • Page 20 All manuals and user guides at all-guides.com WIRING – 4 (AMP 1F) – 20 –...
  • Page 21 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM – 6 (AMP 1F) – 21 –...
  • Page 22 All manuals and user guides at all-guides.com WIRING – 5 (PT) – 22 –...

  • Page 23: Schematic Diagram - 7 (Pt)

    All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM – 7 (PT) – 23 –...
  • Page 24 All manuals and user guides at all-guides.com WIRING – 6 (DECK / HEAD – 1) – 24 –...

  • Page 25: Ic Block Diagram

    All manuals and user guides at all-guides.com IC BLOCK DIAGRAM – 25 –...
  • Page 26 All manuals and user guides at all-guides.com – 26 –...
  • Page 27 All manuals and user guides at all-guides.com IC DESCRIPTION µ PD780226GF-017-3BA Pin No. Pin Name Description O-MOTOR DECK MOTOR ON/OFF output. O-SOL1 DECK1 solenoid output. O-SOL2 DECK2 solenoid output. – Not connected. O-REV_LED PRESET (REV) LED ON/OFF output. O-SET_LED SET LED ON/OFF output. O-CLEAR_LED CLEAR LED ON/OFF output.
  • Page 28 All manuals and user guides at all-guides.com Pin No. Pin Name Description I-CDSW CD mecha switch input. I-SPEANA_L A/D L-input for spectrum analyser level display. I-SPEANA_R A/D R-input for spectrum analyser level display. 46 ~ 48 I-KEY1 ~ I-KEY3 Key1 ~ Key3 input. I-TU_SIG Tuner signal input.
  • Page 29 All manuals and user guides at all-guides.com IC, LC72131D Pin No. Pin Name Description X-IN A crystal oscillator (4.5MHz) is connected between these pins. X-OUT – Not connected. To enable the IC. Active "H". Digital data input from CPU (µPD780226GF-017-3BA) when relevant key is operated. Active "H".
  • Page 30 All manuals and user guides at all-guides.com ADJUSTMENT <TUNER / DECK / FRONT> < TUNER SECTION > 1. Clock frequency Check 11. DC Balance / Mono Distortion Adjustment Settings : • Test point : TP2 (CLK) Settings : • Test point : TP3, TP4 (DC) Method : Set to AM(MW) 1602kHz and check that the test...
  • Page 31 All manuals and user guides at all-guides.com 18. REC/PB Frequency Response Adjustment (DECK 2) Settings : • Test tape : TTA–602 • Test point : TP8 (Lch), TP9 (Rch) • Input signal : 1kHz / 8kHz (–20VU / –26dBV) • Adjustment location : SFR451 (Lch) SFR452 (Rch) Method : Apply a 1kHz signal and REC mode.

  • Page 32: Cd Test Mode

    All manuals and user guides at all-guides.com CD TEST MODE – 32 –...
  • Page 33 All manuals and user guides at all-guides.com MECHANICAL EXPLODED VIEW 1 / 1 <HR> AZG-1 VZD3RDM P.C.B HT-SINK P.C.B FL901 HT-SINK P.C.B P.C.B PLATE,EARTH MIC CHAS,MAIN 6ZM-3 PR2NM PLATE,EARTH MECHA – 33 –...

  • Page 34: Mechanical Parts List

    All manuals and user guides at all-guides.com MECHANICAL PARTS LIST 1 / 1 <HR> REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 1 8A-NF0-007-010 WINDOW,CASS 2 31 8A-NF8-005-010 PANEL,TOP 2 8A-NF0-006-010 WINDOW,CASS 1 32 8A-NF8-006-010 WINDOW,TOP 3 8A-NF0-004-010 BOX,CASS 2 33 8A-NF8-206-010...
  • Page 35 All manuals and user guides at all-guides.com MECHANICAL EXPLODED VIEW 1 / 1 <HS> AZG-1 VZD3RDM P.C.B HT-SINK P.C.B FL901 HT-SINK VM P.C.B P.C.B PLATE,SHLD BINDER,WIRE PLATE,EARTH MIC CHAS,MAIN 6ZM-3 PR2NM PLATE,EARTH MECHA – 35 –...
  • Page 36 All manuals and user guides at all-guides.com MECHANICAL PARTS LIST 1 / 1 <HS> REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 1 8A-NF0-007-010 WINDOW,CASS 2 31 82-NF7-210-110 GUIDE,FL (*) 2 8A-NF0-006-010 WINDOW,CASS 1 32 8A-DJV-003-010 CABI, STEEL 3 8A-NF0-004-010 BOX,CASS 2...

  • Page 37: Tape Mechanism Exploded View

    All manuals and user guides at all-guides.com TAPE MECHANISM EXPLODED VIEW 1 / 1 P.C.B SOL 2 (DECK L only) SOL 1 (DECK L SIDE) (DECK R SIDE) LEVER EJECT R P.C.B PLATE CAPSTAN N 2.2-41.7 SHLD M3 LEVER EJECT L (DECK 2) CAPSTAN N 2-41.5 –...

  • Page 38: Tape Mechanism Parts List

    All manuals and user guides at all-guides.com TAPE MECHANISM PARTS LIST 1 / 1 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 1 86-ZM3-215-010 CHAS ASSY,RS 41 82-ZM1-216-310 GEAR,REEL 2 86-ZM3-202-010 BASE,HEAD S 42 86-ZM3-213-010 S-SCREW,HLDR,MOT 3 3 86-ZM3-205-010 SPR-C,RPH S 43 82-ZM1-225-210...
  • Page 39 All manuals and user guides at all-guides.com 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...

  • Page 40: Speaker Parts List

    All manuals and user guides at all-guides.com SPEAKER PARTS LIST (SX–NBL25) <Y1SL,YJSC9,YJSL,YJ3SL,YJ7SL> REF. NO. PART NO. KANRI DESCRIPTION 1 8A-NSA-001-010 PANEL,FR 2 8A-NSA-014-010 PANEL,DUCT 3 8A-NSA-003-010 GRILLE,FRAME ASSY 4 8A-NSK-602-010 SPKR,W 140 5 8A-NSK-606-010 SPKR,T 60 6 87-NSH-612-010 SPKR,CERAMIC ASSY 7 87-NS7-611-010 CORD,SPKR ACCESSORIES / PACKAGE LIST...
  • Page 41 All manuals and user guides at all-guides.com 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 9420025 0251431 Printed in Singapore...

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Nsx-vc38 hsCx-nvc38Sx-nbl25Rc-zas07

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